net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2023 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326         [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
 327 };
 328
 329 static const struct nla_policy
 330 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 331         [NL80211_PMSR_TYPE_FTM] =
 332                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 333 };
 334
 335 static const struct nla_policy
 336 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 337         [NL80211_PMSR_REQ_ATTR_DATA] =
 338                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 339         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 340 };
 341
 342 static const struct nla_policy
 343 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 344         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 345         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 346         [NL80211_PMSR_PEER_ATTR_REQ] =
 347                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 348         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 349 };
 350
 351 static const struct nla_policy
 352 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 353         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 357         [NL80211_PMSR_ATTR_PEERS] =
 358                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 359 };
 360
 361 static const struct nla_policy
 362 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 363         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 364                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 365         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 366                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 367         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 368                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 369         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 370                 NLA_POLICY_EXACT_LEN(8),
 371         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 372                 NLA_POLICY_EXACT_LEN(8),
 373         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 374 };
 375
 376 static const struct nla_policy
 377 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 378         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 379         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 380         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 381 };
 382
 383 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 384         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 385                                     .len = NL80211_MAX_SUPP_RATES },
 386         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 387                                 .len = NL80211_MAX_SUPP_HT_RATES },
 388         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 389         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 390         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 391         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 392                                                    NL80211_RATE_INFO_HE_GI_0_8,
 393                                                    NL80211_RATE_INFO_HE_GI_3_2),
 394         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 395                                                    NL80211_RATE_INFO_HE_1XLTF,
 396                                                    NL80211_RATE_INFO_HE_4XLTF),
 397 };
 398
 399 static const struct nla_policy
 400 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 401         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 403         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 404         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 405         [NL80211_TID_CONFIG_ATTR_NOACK] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 409         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 410                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 411         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 412                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 413         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 414                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 415         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 416                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 417         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 418                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 425         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 426                         NLA_POLICY_RANGE(NLA_BINARY,
 427                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 428                                          IEEE80211_MAX_DATA_LEN),
 429 };
 430
 431 static const struct nla_policy
 432 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 434         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 435                                                        .len = IEEE80211_MAX_DATA_LEN }
 436 };
 437
 438 static const struct nla_policy
 439 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 440         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 441         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 442 };
 443
 444 static const struct nla_policy
 445 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 446         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 447         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 448 };
 449
 450 static const struct nla_policy
 451 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 453         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 454                                                 NLA_POLICY_MIN(NLA_U8, 1),
 455         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 456         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 457         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 458 };
 459
 460 static const struct nla_policy
 461 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 462         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 463         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 464 };
 465
 466 static struct netlink_range_validation nl80211_punct_bitmap_range = {
 467         .min = 0,
 468         .max = 0xffff,
 469 };
 470
 471 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 472         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 473         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 475                                       .len = 20-1 },
 476         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 477
 478         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 479         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 480         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 481                                                 NL80211_EDMG_CHANNELS_MIN,
 482                                                 NL80211_EDMG_CHANNELS_MAX),
 483         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 484                                                 NL80211_EDMG_BW_CONFIG_MIN,
 485                                                 NL80211_EDMG_BW_CONFIG_MAX),
 486
 487         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 488         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 489         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 490         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 491
 492         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 493         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 494         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 495         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 497         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 498
 499         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 500         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 501         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 502
 503         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 504         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 505
 506         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 507         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 508                                     .len = WLAN_MAX_KEY_LEN },
 509         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 510         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 511         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 513         [NL80211_ATTR_KEY_TYPE] =
 514                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 515
 516         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 517         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 518         [NL80211_ATTR_BEACON_HEAD] =
 519                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 520                                        IEEE80211_MAX_DATA_LEN),
 521         [NL80211_ATTR_BEACON_TAIL] =
 522                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 523                                        IEEE80211_MAX_DATA_LEN),
 524         [NL80211_ATTR_STA_AID] =
 525                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 526         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 527         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 528         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 529                                                .len = NL80211_MAX_SUPP_RATES },
 530         [NL80211_ATTR_STA_PLINK_ACTION] =
 531                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 532         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 533                 NLA_POLICY_RANGE(NLA_U8,
 534                                  NL80211_TX_POWER_AUTOMATIC,
 535                                  NL80211_TX_POWER_FIXED),
 536         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 537         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 538         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 539         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 540                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 541         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 542
 543         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 544         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 545         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 546
 547         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 548         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 549         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 550         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 551                                            .len = NL80211_MAX_SUPP_RATES },
 552         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 553
 554         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 555         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 556
 557         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 558
 559         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 560         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 561                                                    validate_ie_attr,
 562                                                    IEEE80211_MAX_DATA_LEN),
 563         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 564         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 565
 566         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 567                                 .len = IEEE80211_MAX_SSID_LEN },
 568         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 570         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 573                                                   NL80211_MFP_NO,
 574                                                   NL80211_MFP_OPTIONAL),
 575         [NL80211_ATTR_STA_FLAGS2] =
 576                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 577         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 578         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 579         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 583         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 584         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 585         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 586         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 587         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 588         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 589         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 590         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 591         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 592                                  .len = IEEE80211_MAX_DATA_LEN },
 593         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 594         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 595                                                    NL80211_PS_DISABLED,
 596                                                    NL80211_PS_ENABLED),
 597         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 598         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 600         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 601         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 602         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 603         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 604         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 605         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 606         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 608         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_STA_PLINK_STATE] =
 610                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 611         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 612         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 613         [NL80211_ATTR_MESH_PEER_AID] =
 614                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 615         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 616         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 617         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 618         [NL80211_ATTR_HIDDEN_SSID] =
 619                 NLA_POLICY_RANGE(NLA_U32,
 620                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 621                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 622         [NL80211_ATTR_IE_PROBE_RESP] =
 623                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 624                                        IEEE80211_MAX_DATA_LEN),
 625         [NL80211_ATTR_IE_ASSOC_RESP] =
 626                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 627                                        IEEE80211_MAX_DATA_LEN),
 628         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 630         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 631         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 633         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 634         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 635         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 638         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 640                                       .len = IEEE80211_MAX_DATA_LEN },
 641         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 642         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 643         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 644                 .len = NL80211_HT_CAPABILITY_LEN
 645         },
 646         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 647         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 648         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 649         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 650         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 651
 652         /* need to include at least Auth Transaction and Status Code */
 653         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 654
 655         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 656         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 657         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 658         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 659         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 660                 NLA_POLICY_RANGE(NLA_U32,
 661                                  NL80211_MESH_POWER_UNKNOWN + 1,
 662                                  NL80211_MESH_POWER_MAX),
 663         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 664         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 665         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 666         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 667         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 668         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 669         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 670                 .len = NL80211_VHT_CAPABILITY_LEN,
 671         },
 672         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 673         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 674                                   .len = IEEE80211_MAX_DATA_LEN },
 675         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 676         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 677                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 678         [NL80211_ATTR_PEER_AID] =
 679                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 680         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 681         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 682         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 683         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 684         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 685         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 686         /*
 687          * The value of the Length field of the Supported Operating
 688          * Classes element is between 2 and 253.
 689          */
 690         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 691                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 692         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 693         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 694         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 695         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 696         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 697         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 698                                                   IEEE80211_QOS_MAP_LEN_MIN,
 699                                                   IEEE80211_QOS_MAP_LEN_MAX),
 700         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 701         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 702         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 703         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 704         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 705         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 706         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 707         [NL80211_ATTR_USER_PRIO] =
 708                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 709         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 710         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 711         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 712         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 713         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 714         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 715         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 716         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 718         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 719         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 720                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 721         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 722                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 723         },
 724         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 725         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 726         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 727         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 728         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 729                                     .len = FILS_MAX_KEK_LEN },
 730         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 731         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 732         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 733         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 734         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 735                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 736         },
 737         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 738         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 739                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 740         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 741                                           .len = FILS_ERP_MAX_REALM_LEN },
 742         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 743         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 744                                         .len = FILS_ERP_MAX_RRK_LEN },
 745         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 746         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 747         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 748         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 749         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 750
 751         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 752         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 753         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 754         [NL80211_ATTR_HE_CAPABILITY] =
 755                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 756                                        NL80211_HE_MAX_CAPABILITY_LEN),
 757         [NL80211_ATTR_FTM_RESPONDER] =
 758                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 759         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 760         [NL80211_ATTR_PEER_MEASUREMENTS] =
 761                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 762         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 763         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 764                                         .len = SAE_PASSWORD_MAX_LEN },
 765         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 767         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 768         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 769         [NL80211_ATTR_TID_CONFIG] =
 770                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 771         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 772         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 773         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 774         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 775         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 776         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 777         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 779         [NL80211_ATTR_FILS_DISCOVERY] =
 780                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 781         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 782                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 783         [NL80211_ATTR_S1G_CAPABILITY] =
 784                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 785         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 786                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 787         [NL80211_ATTR_SAE_PWE] =
 788                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 789                                  NL80211_SAE_PWE_BOTH),
 790         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 791         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 792         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 793         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 794         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 795         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 796         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 797         [NL80211_ATTR_MBSSID_CONFIG] =
 798                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 799         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 800         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 802         [NL80211_ATTR_EHT_CAPABILITY] =
 803                 NLA_POLICY_RANGE(NLA_BINARY,
 804                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 805                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 806         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MLO_LINKS] =
 808                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 809         [NL80211_ATTR_MLO_LINK_ID] =
 810                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 811         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 812         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 813         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 814         [NL80211_ATTR_PUNCT_BITMAP] =
 815                 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 816
 817         [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
 818         [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
 819         [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
 820         [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
 821 };
 822
 823 /* policy for the key attributes */
 824 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 825         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 826         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 827         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 828         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 829         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 830         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 831         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 832         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 833         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 834 };
 835
 836 /* policy for the key default flags */
 837 static const struct nla_policy
 838 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 839         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 840         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 841 };
 842
 843 #ifdef CONFIG_PM
 844 /* policy for WoWLAN attributes */
 845 static const struct nla_policy
 846 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 847         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 848         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 849         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 850         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 851         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 852         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 853         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 854         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 855         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 856         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 857 };
 858
 859 static const struct nla_policy
 860 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 861         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 862         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 863         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 864         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 865         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 866         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 867         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 868                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 869         },
 870         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 871                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 872         },
 873         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 874         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 875         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 876 };
 877 #endif /* CONFIG_PM */
 878
 879 /* policy for coalesce rule attributes */
 880 static const struct nla_policy
 881 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 882         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 883         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 884                 NLA_POLICY_RANGE(NLA_U32,
 885                                  NL80211_COALESCE_CONDITION_MATCH,
 886                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 887         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 888 };
 889
 890 /* policy for GTK rekey offload attributes */
 891 static const struct nla_policy
 892 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 893         [NL80211_REKEY_DATA_KEK] = {
 894                 .type = NLA_BINARY,
 895                 .len = NL80211_KEK_EXT_LEN
 896         },
 897         [NL80211_REKEY_DATA_KCK] = {
 898                 .type = NLA_BINARY,
 899                 .len = NL80211_KCK_EXT_LEN_32
 900         },
 901         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 902         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 903 };
 904
 905 static const struct nla_policy
 906 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 907         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 908         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 909         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 910         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 911         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 912 };
 913
 914 static const struct nla_policy
 915 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 916         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 917                                                  .len = IEEE80211_MAX_SSID_LEN },
 918         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 919         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 920         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 921                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 922 };
 923
 924 static const struct nla_policy
 925 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 926         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 927         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 928 };
 929
 930 static const struct nla_policy
 931 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 932         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 933         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 934         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 935                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 936         },
 937 };
 938
 939 /* policy for NAN function attributes */
 940 static const struct nla_policy
 941 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 942         [NL80211_NAN_FUNC_TYPE] =
 943                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 944         [NL80211_NAN_FUNC_SERVICE_ID] = {
 945                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 946         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 948         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 949         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 950         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 951         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 952         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 953         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 954         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 955                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 956         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 957         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 958         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 959         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 960         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 961 };
 962
 963 /* policy for Service Response Filter attributes */
 964 static const struct nla_policy
 965 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 966         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 967         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 968                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 969         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 970         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 971 };
 972
 973 /* policy for packet pattern attributes */
 974 static const struct nla_policy
 975 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 976         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 977         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 978         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 979 };
 980
 981 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 982                                      struct cfg80211_registered_device **rdev,
 983                                      struct wireless_dev **wdev,
 984                                      struct nlattr **attrbuf)
 985 {
 986         int err;
 987
 988         if (!cb->args[0]) {
 989                 struct nlattr **attrbuf_free = NULL;
 990
 991                 if (!attrbuf) {
 992                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 993                                           GFP_KERNEL);
 994                         if (!attrbuf)
 995                                 return -ENOMEM;
 996                         attrbuf_free = attrbuf;
 997                 }
 998
 999                 err = nlmsg_parse_deprecated(cb->nlh,
1000                                              GENL_HDRLEN + nl80211_fam.hdrsize,
1001                                              attrbuf, nl80211_fam.maxattr,
1002                                              nl80211_policy, NULL);
1003                 if (err) {
1004                         kfree(attrbuf_free);
1005                         return err;
1006                 }
1007
1008                 rtnl_lock();
1009                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1010                                                    attrbuf);
1011                 kfree(attrbuf_free);
1012                 if (IS_ERR(*wdev)) {
1013                         rtnl_unlock();
1014                         return PTR_ERR(*wdev);
1015                 }
1016                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1017                 mutex_lock(&(*rdev)->wiphy.mtx);
1018                 rtnl_unlock();
1019                 /* 0 is the first index - add 1 to parse only once */
1020                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1021                 cb->args[1] = (*wdev)->identifier;
1022         } else {
1023                 /* subtract the 1 again here */
1024                 struct wiphy *wiphy;
1025                 struct wireless_dev *tmp;
1026
1027                 rtnl_lock();
1028                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1029                 if (!wiphy) {
1030                         rtnl_unlock();
1031                         return -ENODEV;
1032                 }
1033                 *rdev = wiphy_to_rdev(wiphy);
1034                 *wdev = NULL;
1035
1036                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1037                         if (tmp->identifier == cb->args[1]) {
1038                                 *wdev = tmp;
1039                                 break;
1040                         }
1041                 }
1042
1043                 if (!*wdev) {
1044                         rtnl_unlock();
1045                         return -ENODEV;
1046                 }
1047                 mutex_lock(&(*rdev)->wiphy.mtx);
1048                 rtnl_unlock();
1049         }
1050
1051         return 0;
1052 }
1053
1054 /* message building helper */
1055 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1056                      int flags, u8 cmd)
1057 {
1058         /* since there is no private header just add the generic one */
1059         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1060 }
1061
1062 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1063                                      const struct ieee80211_reg_rule *rule)
1064 {
1065         int j;
1066         struct nlattr *nl_wmm_rules =
1067                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1068
1069         if (!nl_wmm_rules)
1070                 goto nla_put_failure;
1071
1072         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1073                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1074
1075                 if (!nl_wmm_rule)
1076                         goto nla_put_failure;
1077
1078                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1079                                 rule->wmm_rule.client[j].cw_min) ||
1080                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1081                                 rule->wmm_rule.client[j].cw_max) ||
1082                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1083                                rule->wmm_rule.client[j].aifsn) ||
1084                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1085                                 rule->wmm_rule.client[j].cot))
1086                         goto nla_put_failure;
1087
1088                 nla_nest_end(msg, nl_wmm_rule);
1089         }
1090         nla_nest_end(msg, nl_wmm_rules);
1091
1092         return 0;
1093
1094 nla_put_failure:
1095         return -ENOBUFS;
1096 }
1097
1098 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1099                                    struct ieee80211_channel *chan,
1100                                    bool large)
1101 {
1102         /* Some channels must be completely excluded from the
1103          * list to protect old user-space tools from breaking
1104          */
1105         if (!large && chan->flags &
1106             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1107                 return 0;
1108         if (!large && chan->freq_offset)
1109                 return 0;
1110
1111         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1112                         chan->center_freq))
1113                 goto nla_put_failure;
1114
1115         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1116                 goto nla_put_failure;
1117
1118         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1119             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1120                 goto nla_put_failure;
1121         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1122                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1123                         goto nla_put_failure;
1124                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1125                         goto nla_put_failure;
1126         }
1127         if (chan->flags & IEEE80211_CHAN_RADAR) {
1128                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1129                         goto nla_put_failure;
1130                 if (large) {
1131                         u32 time;
1132
1133                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1134
1135                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1136                                         chan->dfs_state))
1137                                 goto nla_put_failure;
1138                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1139                                         time))
1140                                 goto nla_put_failure;
1141                         if (nla_put_u32(msg,
1142                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1143                                         chan->dfs_cac_ms))
1144                                 goto nla_put_failure;
1145                 }
1146         }
1147
1148         if (large) {
1149                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1150                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1151                         goto nla_put_failure;
1152                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1153                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1154                         goto nla_put_failure;
1155                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1156                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1157                         goto nla_put_failure;
1158                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1159                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1160                         goto nla_put_failure;
1161                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1162                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1163                         goto nla_put_failure;
1164                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1165                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1166                         goto nla_put_failure;
1167                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1168                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1169                         goto nla_put_failure;
1170                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1171                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1172                         goto nla_put_failure;
1173                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1174                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1175                         goto nla_put_failure;
1176                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1177                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1178                         goto nla_put_failure;
1179                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1180                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1181                         goto nla_put_failure;
1182                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1183                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1184                         goto nla_put_failure;
1185                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1186                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1187                         goto nla_put_failure;
1188                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1189                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1190                         goto nla_put_failure;
1191                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1192                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1193                         goto nla_put_failure;
1194                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1195                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1196                         goto nla_put_failure;
1197         }
1198
1199         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1200                         DBM_TO_MBM(chan->max_power)))
1201                 goto nla_put_failure;
1202
1203         if (large) {
1204                 const struct ieee80211_reg_rule *rule =
1205                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1206
1207                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1208                         if (nl80211_msg_put_wmm_rules(msg, rule))
1209                                 goto nla_put_failure;
1210                 }
1211         }
1212
1213         return 0;
1214
1215  nla_put_failure:
1216         return -ENOBUFS;
1217 }
1218
1219 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1220                                   struct cfg80211_txq_stats *txqstats,
1221                                   int attrtype)
1222 {
1223         struct nlattr *txqattr;
1224
1225 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1226         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1227             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1228                 return false;                                             \
1229         } while (0)
1230
1231         txqattr = nla_nest_start_noflag(msg, attrtype);
1232         if (!txqattr)
1233                 return false;
1234
1235         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1236         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1237         PUT_TXQVAL_U32(FLOWS, flows);
1238         PUT_TXQVAL_U32(DROPS, drops);
1239         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1240         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1241         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1242         PUT_TXQVAL_U32(COLLISIONS, collisions);
1243         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1244         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1245         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1246         nla_nest_end(msg, txqattr);
1247
1248 #undef PUT_TXQVAL_U32
1249         return true;
1250 }
1251
1252 /* netlink command implementations */
1253
1254 /**
1255  * nl80211_link_id - return link ID
1256  * @attrs: attributes to look at
1257  *
1258  * Returns: the link ID or 0 if not given
1259  *
1260  * Note this function doesn't do any validation of the link
1261  * ID validity wrt. links that were actually added, so it must
1262  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1263  * or if additional validation is done.
1264  */
1265 static unsigned int nl80211_link_id(struct nlattr **attrs)
1266 {
1267         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1268
1269         if (!linkid)
1270                 return 0;
1271
1272         return nla_get_u8(linkid);
1273 }
1274
1275 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1276 {
1277         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1278
1279         if (!linkid)
1280                 return -1;
1281
1282         return nla_get_u8(linkid);
1283 }
1284
1285 struct key_parse {
1286         struct key_params p;
1287         int idx;
1288         int type;
1289         bool def, defmgmt, defbeacon;
1290         bool def_uni, def_multi;
1291 };
1292
1293 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1294                                  struct key_parse *k)
1295 {
1296         struct nlattr *tb[NL80211_KEY_MAX + 1];
1297         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1298                                               nl80211_key_policy,
1299                                               info->extack);
1300         if (err)
1301                 return err;
1302
1303         k->def = !!tb[NL80211_KEY_DEFAULT];
1304         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1305         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1306
1307         if (k->def) {
1308                 k->def_uni = true;
1309                 k->def_multi = true;
1310         }
1311         if (k->defmgmt || k->defbeacon)
1312                 k->def_multi = true;
1313
1314         if (tb[NL80211_KEY_IDX])
1315                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1316
1317         if (tb[NL80211_KEY_DATA]) {
1318                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1319                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1320         }
1321
1322         if (tb[NL80211_KEY_SEQ]) {
1323                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1324                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1325         }
1326
1327         if (tb[NL80211_KEY_CIPHER])
1328                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1329
1330         if (tb[NL80211_KEY_TYPE])
1331                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1332
1333         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1334                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1335
1336                 err = nla_parse_nested_deprecated(kdt,
1337                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1338                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1339                                                   nl80211_key_default_policy,
1340                                                   info->extack);
1341                 if (err)
1342                         return err;
1343
1344                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1345                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1346         }
1347
1348         if (tb[NL80211_KEY_MODE])
1349                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1350
1351         return 0;
1352 }
1353
1354 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1355 {
1356         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1357                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1358                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1359         }
1360
1361         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1362                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1363                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1364         }
1365
1366         if (info->attrs[NL80211_ATTR_KEY_IDX])
1367                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1368
1369         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1370                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1371
1372         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1373         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1374
1375         if (k->def) {
1376                 k->def_uni = true;
1377                 k->def_multi = true;
1378         }
1379         if (k->defmgmt)
1380                 k->def_multi = true;
1381
1382         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1383                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1384
1385         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1386                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1387                 int err = nla_parse_nested_deprecated(kdt,
1388                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1389                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1390                                                       nl80211_key_default_policy,
1391                                                       info->extack);
1392                 if (err)
1393                         return err;
1394
1395                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1396                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1397         }
1398
1399         return 0;
1400 }
1401
1402 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1403 {
1404         int err;
1405
1406         memset(k, 0, sizeof(*k));
1407         k->idx = -1;
1408         k->type = -1;
1409
1410         if (info->attrs[NL80211_ATTR_KEY])
1411                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1412         else
1413                 err = nl80211_parse_key_old(info, k);
1414
1415         if (err)
1416                 return err;
1417
1418         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1419             (k->defbeacon ? 1 : 0) > 1) {
1420                 GENL_SET_ERR_MSG(info,
1421                                  "key with multiple default flags is invalid");
1422                 return -EINVAL;
1423         }
1424
1425         if (k->defmgmt || k->defbeacon) {
1426                 if (k->def_uni || !k->def_multi) {
1427                         GENL_SET_ERR_MSG(info,
1428                                          "defmgmt/defbeacon key must be mcast");
1429                         return -EINVAL;
1430                 }
1431         }
1432
1433         if (k->idx != -1) {
1434                 if (k->defmgmt) {
1435                         if (k->idx < 4 || k->idx > 5) {
1436                                 GENL_SET_ERR_MSG(info,
1437                                                  "defmgmt key idx not 4 or 5");
1438                                 return -EINVAL;
1439                         }
1440                 } else if (k->defbeacon) {
1441                         if (k->idx < 6 || k->idx > 7) {
1442                                 GENL_SET_ERR_MSG(info,
1443                                                  "defbeacon key idx not 6 or 7");
1444                                 return -EINVAL;
1445                         }
1446                 } else if (k->def) {
1447                         if (k->idx < 0 || k->idx > 3) {
1448                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1449                                 return -EINVAL;
1450                         }
1451                 } else {
1452                         if (k->idx < 0 || k->idx > 7) {
1453                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1454                                 return -EINVAL;
1455                         }
1456                 }
1457         }
1458
1459         return 0;
1460 }
1461
1462 static struct cfg80211_cached_keys *
1463 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1464                        struct genl_info *info, bool *no_ht)
1465 {
1466         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1467         struct key_parse parse;
1468         struct nlattr *key;
1469         struct cfg80211_cached_keys *result;
1470         int rem, err, def = 0;
1471         bool have_key = false;
1472
1473         nla_for_each_nested(key, keys, rem) {
1474                 have_key = true;
1475                 break;
1476         }
1477
1478         if (!have_key)
1479                 return NULL;
1480
1481         result = kzalloc(sizeof(*result), GFP_KERNEL);
1482         if (!result)
1483                 return ERR_PTR(-ENOMEM);
1484
1485         result->def = -1;
1486
1487         nla_for_each_nested(key, keys, rem) {
1488                 memset(&parse, 0, sizeof(parse));
1489                 parse.idx = -1;
1490
1491                 err = nl80211_parse_key_new(info, key, &parse);
1492                 if (err)
1493                         goto error;
1494                 err = -EINVAL;
1495                 if (!parse.p.key)
1496                         goto error;
1497                 if (parse.idx < 0 || parse.idx > 3) {
1498                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1499                         goto error;
1500                 }
1501                 if (parse.def) {
1502                         if (def) {
1503                                 GENL_SET_ERR_MSG(info,
1504                                                  "only one key can be default");
1505                                 goto error;
1506                         }
1507                         def = 1;
1508                         result->def = parse.idx;
1509                         if (!parse.def_uni || !parse.def_multi)
1510                                 goto error;
1511                 } else if (parse.defmgmt)
1512                         goto error;
1513                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1514                                                      parse.idx, false, NULL);
1515                 if (err)
1516                         goto error;
1517                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1518                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1519                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1520                         err = -EINVAL;
1521                         goto error;
1522                 }
1523                 result->params[parse.idx].cipher = parse.p.cipher;
1524                 result->params[parse.idx].key_len = parse.p.key_len;
1525                 result->params[parse.idx].key = result->data[parse.idx];
1526                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1527
1528                 /* must be WEP key if we got here */
1529                 if (no_ht)
1530                         *no_ht = true;
1531         }
1532
1533         if (result->def < 0) {
1534                 err = -EINVAL;
1535                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1536                 goto error;
1537         }
1538
1539         return result;
1540  error:
1541         kfree(result);
1542         return ERR_PTR(err);
1543 }
1544
1545 static int nl80211_key_allowed(struct wireless_dev *wdev)
1546 {
1547         ASSERT_WDEV_LOCK(wdev);
1548
1549         switch (wdev->iftype) {
1550         case NL80211_IFTYPE_AP:
1551         case NL80211_IFTYPE_AP_VLAN:
1552         case NL80211_IFTYPE_P2P_GO:
1553         case NL80211_IFTYPE_MESH_POINT:
1554                 break;
1555         case NL80211_IFTYPE_ADHOC:
1556                 if (wdev->u.ibss.current_bss)
1557                         return 0;
1558                 return -ENOLINK;
1559         case NL80211_IFTYPE_STATION:
1560         case NL80211_IFTYPE_P2P_CLIENT:
1561                 if (wdev->connected)
1562                         return 0;
1563                 return -ENOLINK;
1564         case NL80211_IFTYPE_NAN:
1565                 if (wiphy_ext_feature_isset(wdev->wiphy,
1566                                             NL80211_EXT_FEATURE_SECURE_NAN))
1567                         return 0;
1568                 return -EINVAL;
1569         case NL80211_IFTYPE_UNSPECIFIED:
1570         case NL80211_IFTYPE_OCB:
1571         case NL80211_IFTYPE_MONITOR:
1572         case NL80211_IFTYPE_P2P_DEVICE:
1573         case NL80211_IFTYPE_WDS:
1574         case NUM_NL80211_IFTYPES:
1575                 return -EINVAL;
1576         }
1577
1578         return 0;
1579 }
1580
1581 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1582                                                         u32 freq)
1583 {
1584         struct ieee80211_channel *chan;
1585
1586         chan = ieee80211_get_channel_khz(wiphy, freq);
1587         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1588                 return NULL;
1589         return chan;
1590 }
1591
1592 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1593 {
1594         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1595         int i;
1596
1597         if (!nl_modes)
1598                 goto nla_put_failure;
1599
1600         i = 0;
1601         while (ifmodes) {
1602                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1603                         goto nla_put_failure;
1604                 ifmodes >>= 1;
1605                 i++;
1606         }
1607
1608         nla_nest_end(msg, nl_modes);
1609         return 0;
1610
1611 nla_put_failure:
1612         return -ENOBUFS;
1613 }
1614
1615 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1616                                           struct sk_buff *msg,
1617                                           bool large)
1618 {
1619         struct nlattr *nl_combis;
1620         int i, j;
1621
1622         nl_combis = nla_nest_start_noflag(msg,
1623                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1624         if (!nl_combis)
1625                 goto nla_put_failure;
1626
1627         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1628                 const struct ieee80211_iface_combination *c;
1629                 struct nlattr *nl_combi, *nl_limits;
1630
1631                 c = &wiphy->iface_combinations[i];
1632
1633                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1634                 if (!nl_combi)
1635                         goto nla_put_failure;
1636
1637                 nl_limits = nla_nest_start_noflag(msg,
1638                                                   NL80211_IFACE_COMB_LIMITS);
1639                 if (!nl_limits)
1640                         goto nla_put_failure;
1641
1642                 for (j = 0; j < c->n_limits; j++) {
1643                         struct nlattr *nl_limit;
1644
1645                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1646                         if (!nl_limit)
1647                                 goto nla_put_failure;
1648                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1649                                         c->limits[j].max))
1650                                 goto nla_put_failure;
1651                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1652                                                 c->limits[j].types))
1653                                 goto nla_put_failure;
1654                         nla_nest_end(msg, nl_limit);
1655                 }
1656
1657                 nla_nest_end(msg, nl_limits);
1658
1659                 if (c->beacon_int_infra_match &&
1660                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1661                         goto nla_put_failure;
1662                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1663                                 c->num_different_channels) ||
1664                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1665                                 c->max_interfaces))
1666                         goto nla_put_failure;
1667                 if (large &&
1668                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1669                                 c->radar_detect_widths) ||
1670                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1671                                 c->radar_detect_regions)))
1672                         goto nla_put_failure;
1673                 if (c->beacon_int_min_gcd &&
1674                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1675                                 c->beacon_int_min_gcd))
1676                         goto nla_put_failure;
1677
1678                 nla_nest_end(msg, nl_combi);
1679         }
1680
1681         nla_nest_end(msg, nl_combis);
1682
1683         return 0;
1684 nla_put_failure:
1685         return -ENOBUFS;
1686 }
1687
1688 #ifdef CONFIG_PM
1689 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1690                                         struct sk_buff *msg)
1691 {
1692         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1693         struct nlattr *nl_tcp;
1694
1695         if (!tcp)
1696                 return 0;
1697
1698         nl_tcp = nla_nest_start_noflag(msg,
1699                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1700         if (!nl_tcp)
1701                 return -ENOBUFS;
1702
1703         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1704                         tcp->data_payload_max))
1705                 return -ENOBUFS;
1706
1707         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1708                         tcp->data_payload_max))
1709                 return -ENOBUFS;
1710
1711         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1712                 return -ENOBUFS;
1713
1714         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1715                                 sizeof(*tcp->tok), tcp->tok))
1716                 return -ENOBUFS;
1717
1718         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1719                         tcp->data_interval_max))
1720                 return -ENOBUFS;
1721
1722         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1723                         tcp->wake_payload_max))
1724                 return -ENOBUFS;
1725
1726         nla_nest_end(msg, nl_tcp);
1727         return 0;
1728 }
1729
1730 static int nl80211_send_wowlan(struct sk_buff *msg,
1731                                struct cfg80211_registered_device *rdev,
1732                                bool large)
1733 {
1734         struct nlattr *nl_wowlan;
1735
1736         if (!rdev->wiphy.wowlan)
1737                 return 0;
1738
1739         nl_wowlan = nla_nest_start_noflag(msg,
1740                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1741         if (!nl_wowlan)
1742                 return -ENOBUFS;
1743
1744         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1745              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1746             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1747              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1748             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1749              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1750             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1751              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1752             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1753              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1754             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1755              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1756             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1757              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1758             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1759              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1760                 return -ENOBUFS;
1761
1762         if (rdev->wiphy.wowlan->n_patterns) {
1763                 struct nl80211_pattern_support pat = {
1764                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1765                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1766                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1767                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1768                 };
1769
1770                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1771                             sizeof(pat), &pat))
1772                         return -ENOBUFS;
1773         }
1774
1775         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1776             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1777                         rdev->wiphy.wowlan->max_nd_match_sets))
1778                 return -ENOBUFS;
1779
1780         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1781                 return -ENOBUFS;
1782
1783         nla_nest_end(msg, nl_wowlan);
1784
1785         return 0;
1786 }
1787 #endif
1788
1789 static int nl80211_send_coalesce(struct sk_buff *msg,
1790                                  struct cfg80211_registered_device *rdev)
1791 {
1792         struct nl80211_coalesce_rule_support rule;
1793
1794         if (!rdev->wiphy.coalesce)
1795                 return 0;
1796
1797         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1798         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1799         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1800         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1801         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1802         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1803
1804         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1805                 return -ENOBUFS;
1806
1807         return 0;
1808 }
1809
1810 static int
1811 nl80211_send_iftype_data(struct sk_buff *msg,
1812                          const struct ieee80211_supported_band *sband,
1813                          const struct ieee80211_sband_iftype_data *iftdata)
1814 {
1815         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1816         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1817
1818         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1819                                 iftdata->types_mask))
1820                 return -ENOBUFS;
1821
1822         if (he_cap->has_he) {
1823                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1824                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1825                             he_cap->he_cap_elem.mac_cap_info) ||
1826                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1827                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1828                             he_cap->he_cap_elem.phy_cap_info) ||
1829                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1830                             sizeof(he_cap->he_mcs_nss_supp),
1831                             &he_cap->he_mcs_nss_supp) ||
1832                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1833                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1834                         return -ENOBUFS;
1835         }
1836
1837         if (eht_cap->has_eht && he_cap->has_he) {
1838                 u8 mcs_nss_size, ppe_thresh_size;
1839                 u16 ppe_thres_hdr;
1840                 bool is_ap;
1841
1842                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1843                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1844
1845                 mcs_nss_size =
1846                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1847                                                    &eht_cap->eht_cap_elem,
1848                                                    is_ap);
1849
1850                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1851                 ppe_thresh_size =
1852                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1853                                                eht_cap->eht_cap_elem.phy_cap_info);
1854
1855                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1856                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1857                             eht_cap->eht_cap_elem.mac_cap_info) ||
1858                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1859                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1860                             eht_cap->eht_cap_elem.phy_cap_info) ||
1861                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1862                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1863                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1864                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1865                         return -ENOBUFS;
1866         }
1867
1868         if (sband->band == NL80211_BAND_6GHZ &&
1869             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1870                     sizeof(iftdata->he_6ghz_capa),
1871                     &iftdata->he_6ghz_capa))
1872                 return -ENOBUFS;
1873
1874         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1875             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1876                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1877                 return -ENOBUFS;
1878
1879         return 0;
1880 }
1881
1882 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1883                                       struct ieee80211_supported_band *sband,
1884                                       bool large)
1885 {
1886         struct nlattr *nl_rates, *nl_rate;
1887         struct ieee80211_rate *rate;
1888         int i;
1889
1890         /* add HT info */
1891         if (sband->ht_cap.ht_supported &&
1892             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1893                      sizeof(sband->ht_cap.mcs),
1894                      &sband->ht_cap.mcs) ||
1895              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1896                          sband->ht_cap.cap) ||
1897              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1898                         sband->ht_cap.ampdu_factor) ||
1899              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1900                         sband->ht_cap.ampdu_density)))
1901                 return -ENOBUFS;
1902
1903         /* add VHT info */
1904         if (sband->vht_cap.vht_supported &&
1905             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1906                      sizeof(sband->vht_cap.vht_mcs),
1907                      &sband->vht_cap.vht_mcs) ||
1908              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1909                          sband->vht_cap.cap)))
1910                 return -ENOBUFS;
1911
1912         if (large && sband->n_iftype_data) {
1913                 struct nlattr *nl_iftype_data =
1914                         nla_nest_start_noflag(msg,
1915                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1916                 int err;
1917
1918                 if (!nl_iftype_data)
1919                         return -ENOBUFS;
1920
1921                 for (i = 0; i < sband->n_iftype_data; i++) {
1922                         struct nlattr *iftdata;
1923
1924                         iftdata = nla_nest_start_noflag(msg, i + 1);
1925                         if (!iftdata)
1926                                 return -ENOBUFS;
1927
1928                         err = nl80211_send_iftype_data(msg, sband,
1929                                                        &sband->iftype_data[i]);
1930                         if (err)
1931                                 return err;
1932
1933                         nla_nest_end(msg, iftdata);
1934                 }
1935
1936                 nla_nest_end(msg, nl_iftype_data);
1937         }
1938
1939         /* add EDMG info */
1940         if (large && sband->edmg_cap.channels &&
1941             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1942                        sband->edmg_cap.channels) ||
1943             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1944                        sband->edmg_cap.bw_config)))
1945
1946                 return -ENOBUFS;
1947
1948         /* add bitrates */
1949         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1950         if (!nl_rates)
1951                 return -ENOBUFS;
1952
1953         for (i = 0; i < sband->n_bitrates; i++) {
1954                 nl_rate = nla_nest_start_noflag(msg, i);
1955                 if (!nl_rate)
1956                         return -ENOBUFS;
1957
1958                 rate = &sband->bitrates[i];
1959                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1960                                 rate->bitrate))
1961                         return -ENOBUFS;
1962                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1963                     nla_put_flag(msg,
1964                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1965                         return -ENOBUFS;
1966
1967                 nla_nest_end(msg, nl_rate);
1968         }
1969
1970         nla_nest_end(msg, nl_rates);
1971
1972         /* S1G capabilities */
1973         if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1974             (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1975                      sizeof(sband->s1g_cap.cap),
1976                      sband->s1g_cap.cap) ||
1977              nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1978                      sizeof(sband->s1g_cap.nss_mcs),
1979                      sband->s1g_cap.nss_mcs)))
1980                 return -ENOBUFS;
1981
1982         return 0;
1983 }
1984
1985 static int
1986 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1987                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1988 {
1989         u16 stypes;
1990         struct nlattr *nl_ftypes, *nl_ifs;
1991         enum nl80211_iftype ift;
1992         int i;
1993
1994         if (!mgmt_stypes)
1995                 return 0;
1996
1997         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1998         if (!nl_ifs)
1999                 return -ENOBUFS;
2000
2001         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2002                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2003                 if (!nl_ftypes)
2004                         return -ENOBUFS;
2005                 i = 0;
2006                 stypes = mgmt_stypes[ift].tx;
2007                 while (stypes) {
2008                         if ((stypes & 1) &&
2009                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2010                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2011                                 return -ENOBUFS;
2012                         stypes >>= 1;
2013                         i++;
2014                 }
2015                 nla_nest_end(msg, nl_ftypes);
2016         }
2017
2018         nla_nest_end(msg, nl_ifs);
2019
2020         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2021         if (!nl_ifs)
2022                 return -ENOBUFS;
2023
2024         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2025                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2026                 if (!nl_ftypes)
2027                         return -ENOBUFS;
2028                 i = 0;
2029                 stypes = mgmt_stypes[ift].rx;
2030                 while (stypes) {
2031                         if ((stypes & 1) &&
2032                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2033                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2034                                 return -ENOBUFS;
2035                         stypes >>= 1;
2036                         i++;
2037                 }
2038                 nla_nest_end(msg, nl_ftypes);
2039         }
2040         nla_nest_end(msg, nl_ifs);
2041
2042         return 0;
2043 }
2044
2045 #define CMD(op, n)                                                      \
2046          do {                                                           \
2047                 if (rdev->ops->op) {                                    \
2048                         i++;                                            \
2049                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2050                                 goto nla_put_failure;                   \
2051                 }                                                       \
2052         } while (0)
2053
2054 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2055                                         struct sk_buff *msg)
2056 {
2057         int i = 0;
2058
2059         /*
2060          * do *NOT* add anything into this function, new things need to be
2061          * advertised only to new versions of userspace that can deal with
2062          * the split (and they can't possibly care about new features...
2063          */
2064         CMD(add_virtual_intf, NEW_INTERFACE);
2065         CMD(change_virtual_intf, SET_INTERFACE);
2066         CMD(add_key, NEW_KEY);
2067         CMD(start_ap, START_AP);
2068         CMD(add_station, NEW_STATION);
2069         CMD(add_mpath, NEW_MPATH);
2070         CMD(update_mesh_config, SET_MESH_CONFIG);
2071         CMD(change_bss, SET_BSS);
2072         CMD(auth, AUTHENTICATE);
2073         CMD(assoc, ASSOCIATE);
2074         CMD(deauth, DEAUTHENTICATE);
2075         CMD(disassoc, DISASSOCIATE);
2076         CMD(join_ibss, JOIN_IBSS);
2077         CMD(join_mesh, JOIN_MESH);
2078         CMD(set_pmksa, SET_PMKSA);
2079         CMD(del_pmksa, DEL_PMKSA);
2080         CMD(flush_pmksa, FLUSH_PMKSA);
2081         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2082                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2083         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2084         CMD(mgmt_tx, FRAME);
2085         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2086         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2087                 i++;
2088                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2089                         goto nla_put_failure;
2090         }
2091         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2092             rdev->ops->join_mesh) {
2093                 i++;
2094                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2095                         goto nla_put_failure;
2096         }
2097         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2098                 CMD(tdls_mgmt, TDLS_MGMT);
2099                 CMD(tdls_oper, TDLS_OPER);
2100         }
2101         if (rdev->wiphy.max_sched_scan_reqs)
2102                 CMD(sched_scan_start, START_SCHED_SCAN);
2103         CMD(probe_client, PROBE_CLIENT);
2104         CMD(set_noack_map, SET_NOACK_MAP);
2105         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2106                 i++;
2107                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2108                         goto nla_put_failure;
2109         }
2110         CMD(start_p2p_device, START_P2P_DEVICE);
2111         CMD(set_mcast_rate, SET_MCAST_RATE);
2112 #ifdef CONFIG_NL80211_TESTMODE
2113         CMD(testmode_cmd, TESTMODE);
2114 #endif
2115
2116         if (rdev->ops->connect || rdev->ops->auth) {
2117                 i++;
2118                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2119                         goto nla_put_failure;
2120         }
2121
2122         if (rdev->ops->disconnect || rdev->ops->deauth) {
2123                 i++;
2124                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2125                         goto nla_put_failure;
2126         }
2127
2128         return i;
2129  nla_put_failure:
2130         return -ENOBUFS;
2131 }
2132
2133 static int
2134 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2135                            struct sk_buff *msg)
2136 {
2137         struct nlattr *ftm;
2138
2139         if (!cap->ftm.supported)
2140                 return 0;
2141
2142         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2143         if (!ftm)
2144                 return -ENOBUFS;
2145
2146         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2147                 return -ENOBUFS;
2148         if (cap->ftm.non_asap &&
2149             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2150                 return -ENOBUFS;
2151         if (cap->ftm.request_lci &&
2152             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2153                 return -ENOBUFS;
2154         if (cap->ftm.request_civicloc &&
2155             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2156                 return -ENOBUFS;
2157         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2158                         cap->ftm.preambles))
2159                 return -ENOBUFS;
2160         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2161                         cap->ftm.bandwidths))
2162                 return -ENOBUFS;
2163         if (cap->ftm.max_bursts_exponent >= 0 &&
2164             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2165                         cap->ftm.max_bursts_exponent))
2166                 return -ENOBUFS;
2167         if (cap->ftm.max_ftms_per_burst &&
2168             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2169                         cap->ftm.max_ftms_per_burst))
2170                 return -ENOBUFS;
2171         if (cap->ftm.trigger_based &&
2172             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2173                 return -ENOBUFS;
2174         if (cap->ftm.non_trigger_based &&
2175             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2176                 return -ENOBUFS;
2177
2178         nla_nest_end(msg, ftm);
2179         return 0;
2180 }
2181
2182 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2183                                   struct sk_buff *msg)
2184 {
2185         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2186         struct nlattr *pmsr, *caps;
2187
2188         if (!cap)
2189                 return 0;
2190
2191         /*
2192          * we don't need to clean up anything here since the caller
2193          * will genlmsg_cancel() if we fail
2194          */
2195
2196         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2197         if (!pmsr)
2198                 return -ENOBUFS;
2199
2200         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2201                 return -ENOBUFS;
2202
2203         if (cap->report_ap_tsf &&
2204             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2205                 return -ENOBUFS;
2206
2207         if (cap->randomize_mac_addr &&
2208             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2209                 return -ENOBUFS;
2210
2211         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2212         if (!caps)
2213                 return -ENOBUFS;
2214
2215         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2216                 return -ENOBUFS;
2217
2218         nla_nest_end(msg, caps);
2219         nla_nest_end(msg, pmsr);
2220
2221         return 0;
2222 }
2223
2224 static int
2225 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2226                               struct sk_buff *msg)
2227 {
2228         int i;
2229         struct nlattr *nested, *nested_akms;
2230         const struct wiphy_iftype_akm_suites *iftype_akms;
2231
2232         if (!rdev->wiphy.num_iftype_akm_suites ||
2233             !rdev->wiphy.iftype_akm_suites)
2234                 return 0;
2235
2236         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2237         if (!nested)
2238                 return -ENOBUFS;
2239
2240         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2241                 nested_akms = nla_nest_start(msg, i + 1);
2242                 if (!nested_akms)
2243                         return -ENOBUFS;
2244
2245                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2246
2247                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2248                                         iftype_akms->iftypes_mask))
2249                         return -ENOBUFS;
2250
2251                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2252                             sizeof(u32) * iftype_akms->n_akm_suites,
2253                             iftype_akms->akm_suites)) {
2254                         return -ENOBUFS;
2255                 }
2256                 nla_nest_end(msg, nested_akms);
2257         }
2258
2259         nla_nest_end(msg, nested);
2260
2261         return 0;
2262 }
2263
2264 static int
2265 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2266                                struct sk_buff *msg)
2267 {
2268         struct nlattr *supp;
2269
2270         if (!rdev->wiphy.tid_config_support.vif &&
2271             !rdev->wiphy.tid_config_support.peer)
2272                 return 0;
2273
2274         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2275         if (!supp)
2276                 return -ENOSPC;
2277
2278         if (rdev->wiphy.tid_config_support.vif &&
2279             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2280                               rdev->wiphy.tid_config_support.vif,
2281                               NL80211_TID_CONFIG_ATTR_PAD))
2282                 goto fail;
2283
2284         if (rdev->wiphy.tid_config_support.peer &&
2285             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2286                               rdev->wiphy.tid_config_support.peer,
2287                               NL80211_TID_CONFIG_ATTR_PAD))
2288                 goto fail;
2289
2290         /* for now we just use the same value ... makes more sense */
2291         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2292                        rdev->wiphy.tid_config_support.max_retry))
2293                 goto fail;
2294         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2295                        rdev->wiphy.tid_config_support.max_retry))
2296                 goto fail;
2297
2298         nla_nest_end(msg, supp);
2299
2300         return 0;
2301 fail:
2302         nla_nest_cancel(msg, supp);
2303         return -ENOBUFS;
2304 }
2305
2306 static int
2307 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2308                       struct sk_buff *msg)
2309 {
2310         struct nlattr *sar_capa, *specs, *sub_freq_range;
2311         u8 num_freq_ranges;
2312         int i;
2313
2314         if (!rdev->wiphy.sar_capa)
2315                 return 0;
2316
2317         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2318
2319         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2320         if (!sar_capa)
2321                 return -ENOSPC;
2322
2323         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2324                 goto fail;
2325
2326         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2327         if (!specs)
2328                 goto fail;
2329
2330         /* report supported freq_ranges */
2331         for (i = 0; i < num_freq_ranges; i++) {
2332                 sub_freq_range = nla_nest_start(msg, i + 1);
2333                 if (!sub_freq_range)
2334                         goto fail;
2335
2336                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2337                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2338                         goto fail;
2339
2340                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2341                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2342                         goto fail;
2343
2344                 nla_nest_end(msg, sub_freq_range);
2345         }
2346
2347         nla_nest_end(msg, specs);
2348         nla_nest_end(msg, sar_capa);
2349
2350         return 0;
2351 fail:
2352         nla_nest_cancel(msg, sar_capa);
2353         return -ENOBUFS;
2354 }
2355
2356 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2357 {
2358         struct nlattr *config;
2359
2360         if (!wiphy->mbssid_max_interfaces)
2361                 return 0;
2362
2363         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2364         if (!config)
2365                 return -ENOBUFS;
2366
2367         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2368                        wiphy->mbssid_max_interfaces))
2369                 goto fail;
2370
2371         if (wiphy->ema_max_profile_periodicity &&
2372             nla_put_u8(msg,
2373                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2374                        wiphy->ema_max_profile_periodicity))
2375                 goto fail;
2376
2377         nla_nest_end(msg, config);
2378         return 0;
2379
2380 fail:
2381         nla_nest_cancel(msg, config);
2382         return -ENOBUFS;
2383 }
2384
2385 struct nl80211_dump_wiphy_state {
2386         s64 filter_wiphy;
2387         long start;
2388         long split_start, band_start, chan_start, capa_start;
2389         bool split;
2390 };
2391
2392 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2393                               enum nl80211_commands cmd,
2394                               struct sk_buff *msg, u32 portid, u32 seq,
2395                               int flags, struct nl80211_dump_wiphy_state *state)
2396 {
2397         void *hdr;
2398         struct nlattr *nl_bands, *nl_band;
2399         struct nlattr *nl_freqs, *nl_freq;
2400         struct nlattr *nl_cmds;
2401         enum nl80211_band band;
2402         struct ieee80211_channel *chan;
2403         int i;
2404         const struct ieee80211_txrx_stypes *mgmt_stypes =
2405                                 rdev->wiphy.mgmt_stypes;
2406         u32 features;
2407
2408         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2409         if (!hdr)
2410                 return -ENOBUFS;
2411
2412         if (WARN_ON(!state))
2413                 return -EINVAL;
2414
2415         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2416             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2417                            wiphy_name(&rdev->wiphy)) ||
2418             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2419                         cfg80211_rdev_list_generation))
2420                 goto nla_put_failure;
2421
2422         if (cmd != NL80211_CMD_NEW_WIPHY)
2423                 goto finish;
2424
2425         switch (state->split_start) {
2426         case 0:
2427                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2428                                rdev->wiphy.retry_short) ||
2429                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2430                                rdev->wiphy.retry_long) ||
2431                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2432                                 rdev->wiphy.frag_threshold) ||
2433                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2434                                 rdev->wiphy.rts_threshold) ||
2435                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2436                                rdev->wiphy.coverage_class) ||
2437                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2438                                rdev->wiphy.max_scan_ssids) ||
2439                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2440                                rdev->wiphy.max_sched_scan_ssids) ||
2441                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2442                                 rdev->wiphy.max_scan_ie_len) ||
2443                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2444                                 rdev->wiphy.max_sched_scan_ie_len) ||
2445                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2446                                rdev->wiphy.max_match_sets))
2447                         goto nla_put_failure;
2448
2449                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2450                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2451                         goto nla_put_failure;
2452                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2453                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2454                         goto nla_put_failure;
2455                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2456                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2457                         goto nla_put_failure;
2458                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2459                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2460                         goto nla_put_failure;
2461                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2462                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2463                         goto nla_put_failure;
2464                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2465                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2466                         goto nla_put_failure;
2467                 state->split_start++;
2468                 if (state->split)
2469                         break;
2470                 fallthrough;
2471         case 1:
2472                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2473                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2474                             rdev->wiphy.cipher_suites))
2475                         goto nla_put_failure;
2476
2477                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2478                                rdev->wiphy.max_num_pmkids))
2479                         goto nla_put_failure;
2480
2481                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2482                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2483                         goto nla_put_failure;
2484
2485                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2486                                 rdev->wiphy.available_antennas_tx) ||
2487                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2488                                 rdev->wiphy.available_antennas_rx))
2489                         goto nla_put_failure;
2490
2491                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2492                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2493                                 rdev->wiphy.probe_resp_offload))
2494                         goto nla_put_failure;
2495
2496                 if ((rdev->wiphy.available_antennas_tx ||
2497                      rdev->wiphy.available_antennas_rx) &&
2498                     rdev->ops->get_antenna) {
2499                         u32 tx_ant = 0, rx_ant = 0;
2500                         int res;
2501
2502                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2503                         if (!res) {
2504                                 if (nla_put_u32(msg,
2505                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2506                                                 tx_ant) ||
2507                                     nla_put_u32(msg,
2508                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2509                                                 rx_ant))
2510                                         goto nla_put_failure;
2511                         }
2512                 }
2513
2514                 state->split_start++;
2515                 if (state->split)
2516                         break;
2517                 fallthrough;
2518         case 2:
2519                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2520                                         rdev->wiphy.interface_modes))
2521                                 goto nla_put_failure;
2522                 state->split_start++;
2523                 if (state->split)
2524                         break;
2525                 fallthrough;
2526         case 3:
2527                 nl_bands = nla_nest_start_noflag(msg,
2528                                                  NL80211_ATTR_WIPHY_BANDS);
2529                 if (!nl_bands)
2530                         goto nla_put_failure;
2531
2532                 for (band = state->band_start;
2533                      band < (state->split ?
2534                                 NUM_NL80211_BANDS :
2535                                 NL80211_BAND_60GHZ + 1);
2536                      band++) {
2537                         struct ieee80211_supported_band *sband;
2538
2539                         /* omit higher bands for ancient software */
2540                         if (band > NL80211_BAND_5GHZ && !state->split)
2541                                 break;
2542
2543                         sband = rdev->wiphy.bands[band];
2544
2545                         if (!sband)
2546                                 continue;
2547
2548                         nl_band = nla_nest_start_noflag(msg, band);
2549                         if (!nl_band)
2550                                 goto nla_put_failure;
2551
2552                         switch (state->chan_start) {
2553                         case 0:
2554                                 if (nl80211_send_band_rateinfo(msg, sband,
2555                                                                state->split))
2556                                         goto nla_put_failure;
2557                                 state->chan_start++;
2558                                 if (state->split)
2559                                         break;
2560                                 fallthrough;
2561                         default:
2562                                 /* add frequencies */
2563                                 nl_freqs = nla_nest_start_noflag(msg,
2564                                                                  NL80211_BAND_ATTR_FREQS);
2565                                 if (!nl_freqs)
2566                                         goto nla_put_failure;
2567
2568                                 for (i = state->chan_start - 1;
2569                                      i < sband->n_channels;
2570                                      i++) {
2571                                         nl_freq = nla_nest_start_noflag(msg,
2572                                                                         i);
2573                                         if (!nl_freq)
2574                                                 goto nla_put_failure;
2575
2576                                         chan = &sband->channels[i];
2577
2578                                         if (nl80211_msg_put_channel(
2579                                                         msg, &rdev->wiphy, chan,
2580                                                         state->split))
2581                                                 goto nla_put_failure;
2582
2583                                         nla_nest_end(msg, nl_freq);
2584                                         if (state->split)
2585                                                 break;
2586                                 }
2587                                 if (i < sband->n_channels)
2588                                         state->chan_start = i + 2;
2589                                 else
2590                                         state->chan_start = 0;
2591                                 nla_nest_end(msg, nl_freqs);
2592                         }
2593
2594                         nla_nest_end(msg, nl_band);
2595
2596                         if (state->split) {
2597                                 /* start again here */
2598                                 if (state->chan_start)
2599                                         band--;
2600                                 break;
2601                         }
2602                 }
2603                 nla_nest_end(msg, nl_bands);
2604
2605                 if (band < NUM_NL80211_BANDS)
2606                         state->band_start = band + 1;
2607                 else
2608                         state->band_start = 0;
2609
2610                 /* if bands & channels are done, continue outside */
2611                 if (state->band_start == 0 && state->chan_start == 0)
2612                         state->split_start++;
2613                 if (state->split)
2614                         break;
2615                 fallthrough;
2616         case 4:
2617                 nl_cmds = nla_nest_start_noflag(msg,
2618                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2619                 if (!nl_cmds)
2620                         goto nla_put_failure;
2621
2622                 i = nl80211_add_commands_unsplit(rdev, msg);
2623                 if (i < 0)
2624                         goto nla_put_failure;
2625                 if (state->split) {
2626                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2627                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2628                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2629                                 CMD(channel_switch, CHANNEL_SWITCH);
2630                         CMD(set_qos_map, SET_QOS_MAP);
2631                         if (rdev->wiphy.features &
2632                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2633                                 CMD(add_tx_ts, ADD_TX_TS);
2634                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2635                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2636                         CMD(update_ft_ies, UPDATE_FT_IES);
2637                         if (rdev->wiphy.sar_capa)
2638                                 CMD(set_sar_specs, SET_SAR_SPECS);
2639                 }
2640 #undef CMD
2641
2642                 nla_nest_end(msg, nl_cmds);
2643                 state->split_start++;
2644                 if (state->split)
2645                         break;
2646                 fallthrough;
2647         case 5:
2648                 if (rdev->ops->remain_on_channel &&
2649                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2650                     nla_put_u32(msg,
2651                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2652                                 rdev->wiphy.max_remain_on_channel_duration))
2653                         goto nla_put_failure;
2654
2655                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2656                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2657                         goto nla_put_failure;
2658
2659                 state->split_start++;
2660                 if (state->split)
2661                         break;
2662                 fallthrough;
2663         case 6:
2664 #ifdef CONFIG_PM
2665                 if (nl80211_send_wowlan(msg, rdev, state->split))
2666                         goto nla_put_failure;
2667                 state->split_start++;
2668                 if (state->split)
2669                         break;
2670 #else
2671                 state->split_start++;
2672 #endif
2673                 fallthrough;
2674         case 7:
2675                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2676                                         rdev->wiphy.software_iftypes))
2677                         goto nla_put_failure;
2678
2679                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2680                                                    state->split))
2681                         goto nla_put_failure;
2682
2683                 state->split_start++;
2684                 if (state->split)
2685                         break;
2686                 fallthrough;
2687         case 8:
2688                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2689                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2690                                 rdev->wiphy.ap_sme_capa))
2691                         goto nla_put_failure;
2692
2693                 features = rdev->wiphy.features;
2694                 /*
2695                  * We can only add the per-channel limit information if the
2696                  * dump is split, otherwise it makes it too big. Therefore
2697                  * only advertise it in that case.
2698                  */
2699                 if (state->split)
2700                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2701                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2702                         goto nla_put_failure;
2703
2704                 if (rdev->wiphy.ht_capa_mod_mask &&
2705                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2706                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2707                             rdev->wiphy.ht_capa_mod_mask))
2708                         goto nla_put_failure;
2709
2710                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2711                     rdev->wiphy.max_acl_mac_addrs &&
2712                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2713                                 rdev->wiphy.max_acl_mac_addrs))
2714                         goto nla_put_failure;
2715
2716                 /*
2717                  * Any information below this point is only available to
2718                  * applications that can deal with it being split. This
2719                  * helps ensure that newly added capabilities don't break
2720                  * older tools by overrunning their buffers.
2721                  *
2722                  * We still increment split_start so that in the split
2723                  * case we'll continue with more data in the next round,
2724                  * but break unconditionally so unsplit data stops here.
2725                  */
2726                 if (state->split)
2727                         state->split_start++;
2728                 else
2729                         state->split_start = 0;
2730                 break;
2731         case 9:
2732                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2733                         goto nla_put_failure;
2734
2735                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2736                                 rdev->wiphy.max_sched_scan_plans) ||
2737                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2738                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2739                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2740                                 rdev->wiphy.max_sched_scan_plan_iterations))
2741                         goto nla_put_failure;
2742
2743                 if (rdev->wiphy.extended_capabilities &&
2744                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2745                              rdev->wiphy.extended_capabilities_len,
2746                              rdev->wiphy.extended_capabilities) ||
2747                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2748                              rdev->wiphy.extended_capabilities_len,
2749                              rdev->wiphy.extended_capabilities_mask)))
2750                         goto nla_put_failure;
2751
2752                 if (rdev->wiphy.vht_capa_mod_mask &&
2753                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2754                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2755                             rdev->wiphy.vht_capa_mod_mask))
2756                         goto nla_put_failure;
2757
2758                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2759                             rdev->wiphy.perm_addr))
2760                         goto nla_put_failure;
2761
2762                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2763                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2764                             rdev->wiphy.addr_mask))
2765                         goto nla_put_failure;
2766
2767                 if (rdev->wiphy.n_addresses > 1) {
2768                         void *attr;
2769
2770                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2771                         if (!attr)
2772                                 goto nla_put_failure;
2773
2774                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2775                                 if (nla_put(msg, i + 1, ETH_ALEN,
2776                                             rdev->wiphy.addresses[i].addr))
2777                                         goto nla_put_failure;
2778
2779                         nla_nest_end(msg, attr);
2780                 }
2781
2782                 state->split_start++;
2783                 break;
2784         case 10:
2785                 if (nl80211_send_coalesce(msg, rdev))
2786                         goto nla_put_failure;
2787
2788                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2789                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2790                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2791                         goto nla_put_failure;
2792
2793                 if (rdev->wiphy.max_ap_assoc_sta &&
2794                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2795                                 rdev->wiphy.max_ap_assoc_sta))
2796                         goto nla_put_failure;
2797
2798                 state->split_start++;
2799                 break;
2800         case 11:
2801                 if (rdev->wiphy.n_vendor_commands) {
2802                         const struct nl80211_vendor_cmd_info *info;
2803                         struct nlattr *nested;
2804
2805                         nested = nla_nest_start_noflag(msg,
2806                                                        NL80211_ATTR_VENDOR_DATA);
2807                         if (!nested)
2808                                 goto nla_put_failure;
2809
2810                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2811                                 info = &rdev->wiphy.vendor_commands[i].info;
2812                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2813                                         goto nla_put_failure;
2814                         }
2815                         nla_nest_end(msg, nested);
2816                 }
2817
2818                 if (rdev->wiphy.n_vendor_events) {
2819                         const struct nl80211_vendor_cmd_info *info;
2820                         struct nlattr *nested;
2821
2822                         nested = nla_nest_start_noflag(msg,
2823                                                        NL80211_ATTR_VENDOR_EVENTS);
2824                         if (!nested)
2825                                 goto nla_put_failure;
2826
2827                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2828                                 info = &rdev->wiphy.vendor_events[i];
2829                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2830                                         goto nla_put_failure;
2831                         }
2832                         nla_nest_end(msg, nested);
2833                 }
2834                 state->split_start++;
2835                 break;
2836         case 12:
2837                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2838                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2839                                rdev->wiphy.max_num_csa_counters))
2840                         goto nla_put_failure;
2841
2842                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2843                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2844                         goto nla_put_failure;
2845
2846                 if (rdev->wiphy.max_sched_scan_reqs &&
2847                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2848                                 rdev->wiphy.max_sched_scan_reqs))
2849                         goto nla_put_failure;
2850
2851                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2852                             sizeof(rdev->wiphy.ext_features),
2853                             rdev->wiphy.ext_features))
2854                         goto nla_put_failure;
2855
2856                 if (rdev->wiphy.bss_select_support) {
2857                         struct nlattr *nested;
2858                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2859
2860                         nested = nla_nest_start_noflag(msg,
2861                                                        NL80211_ATTR_BSS_SELECT);
2862                         if (!nested)
2863                                 goto nla_put_failure;
2864
2865                         i = 0;
2866                         while (bss_select_support) {
2867                                 if ((bss_select_support & 1) &&
2868                                     nla_put_flag(msg, i))
2869                                         goto nla_put_failure;
2870                                 i++;
2871                                 bss_select_support >>= 1;
2872                         }
2873                         nla_nest_end(msg, nested);
2874                 }
2875
2876                 state->split_start++;
2877                 break;
2878         case 13:
2879                 if (rdev->wiphy.num_iftype_ext_capab &&
2880                     rdev->wiphy.iftype_ext_capab) {
2881                         struct nlattr *nested_ext_capab, *nested;
2882
2883                         nested = nla_nest_start_noflag(msg,
2884                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2885                         if (!nested)
2886                                 goto nla_put_failure;
2887
2888                         for (i = state->capa_start;
2889                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2890                                 const struct wiphy_iftype_ext_capab *capab;
2891
2892                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2893
2894                                 nested_ext_capab = nla_nest_start_noflag(msg,
2895                                                                          i);
2896                                 if (!nested_ext_capab ||
2897                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2898                                                 capab->iftype) ||
2899                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2900                                             capab->extended_capabilities_len,
2901                                             capab->extended_capabilities) ||
2902                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2903                                             capab->extended_capabilities_len,
2904                                             capab->extended_capabilities_mask))
2905                                         goto nla_put_failure;
2906
2907                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2908                                     (nla_put_u16(msg,
2909                                                  NL80211_ATTR_EML_CAPABILITY,
2910                                                  capab->eml_capabilities) ||
2911                                      nla_put_u16(msg,
2912                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2913                                                  capab->mld_capa_and_ops)))
2914                                         goto nla_put_failure;
2915
2916                                 nla_nest_end(msg, nested_ext_capab);
2917                                 if (state->split)
2918                                         break;
2919                         }
2920                         nla_nest_end(msg, nested);
2921                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2922                                 state->capa_start = i + 1;
2923                                 break;
2924                         }
2925                 }
2926
2927                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2928                                 rdev->wiphy.nan_supported_bands))
2929                         goto nla_put_failure;
2930
2931                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2932                                             NL80211_EXT_FEATURE_TXQS)) {
2933                         struct cfg80211_txq_stats txqstats = {};
2934                         int res;
2935
2936                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2937                         if (!res &&
2938                             !nl80211_put_txq_stats(msg, &txqstats,
2939                                                    NL80211_ATTR_TXQ_STATS))
2940                                 goto nla_put_failure;
2941
2942                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2943                                         rdev->wiphy.txq_limit))
2944                                 goto nla_put_failure;
2945                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2946                                         rdev->wiphy.txq_memory_limit))
2947                                 goto nla_put_failure;
2948                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2949                                         rdev->wiphy.txq_quantum))
2950                                 goto nla_put_failure;
2951                 }
2952
2953                 state->split_start++;
2954                 break;
2955         case 14:
2956                 if (nl80211_send_pmsr_capa(rdev, msg))
2957                         goto nla_put_failure;
2958
2959                 state->split_start++;
2960                 break;
2961         case 15:
2962                 if (rdev->wiphy.akm_suites &&
2963                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2964                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2965                             rdev->wiphy.akm_suites))
2966                         goto nla_put_failure;
2967
2968                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2969                         goto nla_put_failure;
2970
2971                 if (nl80211_put_tid_config_support(rdev, msg))
2972                         goto nla_put_failure;
2973                 state->split_start++;
2974                 break;
2975         case 16:
2976                 if (nl80211_put_sar_specs(rdev, msg))
2977                         goto nla_put_failure;
2978
2979                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2980                         goto nla_put_failure;
2981
2982                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2983                                 rdev->wiphy.max_num_akm_suites))
2984                         goto nla_put_failure;
2985
2986                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2987                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2988
2989                 if (rdev->wiphy.hw_timestamp_max_peers &&
2990                     nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
2991                                 rdev->wiphy.hw_timestamp_max_peers))
2992                         goto nla_put_failure;
2993
2994                 /* done */
2995                 state->split_start = 0;
2996                 break;
2997         }
2998  finish:
2999         genlmsg_end(msg, hdr);
3000         return 0;
3001
3002  nla_put_failure:
3003         genlmsg_cancel(msg, hdr);
3004         return -EMSGSIZE;
3005 }
3006
3007 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3008                                     struct netlink_callback *cb,
3009                                     struct nl80211_dump_wiphy_state *state)
3010 {
3011         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3012         int ret;
3013
3014         if (!tb)
3015                 return -ENOMEM;
3016
3017         ret = nlmsg_parse_deprecated(cb->nlh,
3018                                      GENL_HDRLEN + nl80211_fam.hdrsize,
3019                                      tb, nl80211_fam.maxattr,
3020                                      nl80211_policy, NULL);
3021         /* ignore parse errors for backward compatibility */
3022         if (ret) {
3023                 ret = 0;
3024                 goto out;
3025         }
3026
3027         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3028         if (tb[NL80211_ATTR_WIPHY])
3029                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3030         if (tb[NL80211_ATTR_WDEV])
3031                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3032         if (tb[NL80211_ATTR_IFINDEX]) {
3033                 struct net_device *netdev;
3034                 struct cfg80211_registered_device *rdev;
3035                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3036
3037                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3038                 if (!netdev) {
3039                         ret = -ENODEV;
3040                         goto out;
3041                 }
3042                 if (netdev->ieee80211_ptr) {
3043                         rdev = wiphy_to_rdev(
3044                                 netdev->ieee80211_ptr->wiphy);
3045                         state->filter_wiphy = rdev->wiphy_idx;
3046                 }
3047         }
3048
3049         ret = 0;
3050 out:
3051         kfree(tb);
3052         return ret;
3053 }
3054
3055 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3056 {
3057         int idx = 0, ret;
3058         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3059         struct cfg80211_registered_device *rdev;
3060
3061         rtnl_lock();
3062         if (!state) {
3063                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3064                 if (!state) {
3065                         rtnl_unlock();
3066                         return -ENOMEM;
3067                 }
3068                 state->filter_wiphy = -1;
3069                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3070                 if (ret) {
3071                         kfree(state);
3072                         rtnl_unlock();
3073                         return ret;
3074                 }
3075                 cb->args[0] = (long)state;
3076         }
3077
3078         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3079                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3080                         continue;
3081                 if (++idx <= state->start)
3082                         continue;
3083                 if (state->filter_wiphy != -1 &&
3084                     state->filter_wiphy != rdev->wiphy_idx)
3085                         continue;
3086                 wiphy_lock(&rdev->wiphy);
3087                 /* attempt to fit multiple wiphy data chunks into the skb */
3088                 do {
3089                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3090                                                  skb,
3091                                                  NETLINK_CB(cb->skb).portid,
3092                                                  cb->nlh->nlmsg_seq,
3093                                                  NLM_F_MULTI, state);
3094                         if (ret < 0) {
3095                                 /*
3096                                  * If sending the wiphy data didn't fit (ENOBUFS
3097                                  * or EMSGSIZE returned), this SKB is still
3098                                  * empty (so it's not too big because another
3099                                  * wiphy dataset is already in the skb) and
3100                                  * we've not tried to adjust the dump allocation
3101                                  * yet ... then adjust the alloc size to be
3102                                  * bigger, and return 1 but with the empty skb.
3103                                  * This results in an empty message being RX'ed
3104                                  * in userspace, but that is ignored.
3105                                  *
3106                                  * We can then retry with the larger buffer.
3107                                  */
3108                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3109                                     !skb->len && !state->split &&
3110                                     cb->min_dump_alloc < 4096) {
3111                                         cb->min_dump_alloc = 4096;
3112                                         state->split_start = 0;
3113                                         wiphy_unlock(&rdev->wiphy);
3114                                         rtnl_unlock();
3115                                         return 1;
3116                                 }
3117                                 idx--;
3118                                 break;
3119                         }
3120                 } while (state->split_start > 0);
3121                 wiphy_unlock(&rdev->wiphy);
3122                 break;
3123         }
3124         rtnl_unlock();
3125
3126         state->start = idx;
3127
3128         return skb->len;
3129 }
3130
3131 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3132 {
3133         kfree((void *)cb->args[0]);
3134         return 0;
3135 }
3136
3137 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3138 {
3139         struct sk_buff *msg;
3140         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3141         struct nl80211_dump_wiphy_state state = {};
3142
3143         msg = nlmsg_new(4096, GFP_KERNEL);
3144         if (!msg)
3145                 return -ENOMEM;
3146
3147         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3148                                info->snd_portid, info->snd_seq, 0,
3149                                &state) < 0) {
3150                 nlmsg_free(msg);
3151                 return -ENOBUFS;
3152         }
3153
3154         return genlmsg_reply(msg, info);
3155 }
3156
3157 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3158         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3159         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3160         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3161         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3162         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3163 };
3164
3165 static int parse_txq_params(struct nlattr *tb[],
3166                             struct ieee80211_txq_params *txq_params)
3167 {
3168         u8 ac;
3169
3170         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3171             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3172             !tb[NL80211_TXQ_ATTR_AIFS])
3173                 return -EINVAL;
3174
3175         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3176         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3177         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3178         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3179         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3180
3181         if (ac >= NL80211_NUM_ACS)
3182                 return -EINVAL;
3183         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3184         return 0;
3185 }
3186
3187 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3188 {
3189         /*
3190          * You can only set the channel explicitly for some interfaces,
3191          * most have their channel managed via their respective
3192          * "establish a connection" command (connect, join, ...)
3193          *
3194          * For AP/GO and mesh mode, the channel can be set with the
3195          * channel userspace API, but is only stored and passed to the
3196          * low-level driver when the AP starts or the mesh is joined.
3197          * This is for backward compatibility, userspace can also give
3198          * the channel in the start-ap or join-mesh commands instead.
3199          *
3200          * Monitors are special as they are normally slaved to
3201          * whatever else is going on, so they have their own special
3202          * operation to set the monitor channel if possible.
3203          */
3204         return !wdev ||
3205                 wdev->iftype == NL80211_IFTYPE_AP ||
3206                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3207                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3208                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3209 }
3210
3211 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3212                                       struct genl_info *info,
3213                                       const struct cfg80211_chan_def *chandef,
3214                                       u16 *punct_bitmap)
3215 {
3216         if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3217                 return -EINVAL;
3218
3219         *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3220         if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3221                 return -EINVAL;
3222
3223         return 0;
3224 }
3225
3226 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3227                           struct genl_info *info,
3228                           struct cfg80211_chan_def *chandef)
3229 {
3230         struct netlink_ext_ack *extack = info->extack;
3231         struct nlattr **attrs = info->attrs;
3232         u32 control_freq;
3233
3234         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3235                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3236                                     "Frequency is missing");
3237                 return -EINVAL;
3238         }
3239
3240         control_freq = MHZ_TO_KHZ(
3241                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3242         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3243                 control_freq +=
3244                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3245
3246         memset(chandef, 0, sizeof(*chandef));
3247         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3248         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3249         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3250         chandef->freq1_offset = control_freq % 1000;
3251         chandef->center_freq2 = 0;
3252
3253         /* Primary channel not allowed */
3254         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3255                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3256                                     "Channel is disabled");
3257                 return -EINVAL;
3258         }
3259
3260         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3261                 enum nl80211_channel_type chantype;
3262
3263                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3264
3265                 switch (chantype) {
3266                 case NL80211_CHAN_NO_HT:
3267                 case NL80211_CHAN_HT20:
3268                 case NL80211_CHAN_HT40PLUS:
3269                 case NL80211_CHAN_HT40MINUS:
3270                         cfg80211_chandef_create(chandef, chandef->chan,
3271                                                 chantype);
3272                         /* user input for center_freq is incorrect */
3273                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3274                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3275                                 NL_SET_ERR_MSG_ATTR(extack,
3276                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3277                                                     "bad center frequency 1");
3278                                 return -EINVAL;
3279                         }
3280                         /* center_freq2 must be zero */
3281                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3282                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3283                                 NL_SET_ERR_MSG_ATTR(extack,
3284                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3285                                                     "center frequency 2 can't be used");
3286                                 return -EINVAL;
3287                         }
3288                         break;
3289                 default:
3290                         NL_SET_ERR_MSG_ATTR(extack,
3291                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3292                                             "invalid channel type");
3293                         return -EINVAL;
3294                 }
3295         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3296                 chandef->width =
3297                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3298                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3299                         /* User input error for channel width doesn't match channel  */
3300                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3301                                 NL_SET_ERR_MSG_ATTR(extack,
3302                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3303                                                     "bad channel width");
3304                                 return -EINVAL;
3305                         }
3306                 }
3307                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3308                         chandef->center_freq1 =
3309                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3310                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3311                                 chandef->freq1_offset = nla_get_u32(
3312                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3313                         else
3314                                 chandef->freq1_offset = 0;
3315                 }
3316                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3317                         chandef->center_freq2 =
3318                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3319         }
3320
3321         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3322                 chandef->edmg.channels =
3323                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3324
3325                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3326                         chandef->edmg.bw_config =
3327                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3328         } else {
3329                 chandef->edmg.bw_config = 0;
3330                 chandef->edmg.channels = 0;
3331         }
3332
3333         if (!cfg80211_chandef_valid(chandef)) {
3334                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3335                 return -EINVAL;
3336         }
3337
3338         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3339                                      IEEE80211_CHAN_DISABLED)) {
3340                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3341                 return -EINVAL;
3342         }
3343
3344         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3345              chandef->width == NL80211_CHAN_WIDTH_10) &&
3346             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3347                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3348                 return -EINVAL;
3349         }
3350
3351         return 0;
3352 }
3353
3354 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3355                                  struct net_device *dev,
3356                                  struct genl_info *info,
3357                                  int _link_id)
3358 {
3359         struct cfg80211_chan_def chandef;
3360         int result;
3361         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3362         struct wireless_dev *wdev = NULL;
3363         int link_id = _link_id;
3364
3365         if (dev)
3366                 wdev = dev->ieee80211_ptr;
3367         if (!nl80211_can_set_dev_channel(wdev))
3368                 return -EOPNOTSUPP;
3369         if (wdev)
3370                 iftype = wdev->iftype;
3371
3372         if (link_id < 0) {
3373                 if (wdev && wdev->valid_links)
3374                         return -EINVAL;
3375                 link_id = 0;
3376         }
3377
3378         result = nl80211_parse_chandef(rdev, info, &chandef);
3379         if (result)
3380                 return result;
3381
3382         switch (iftype) {
3383         case NL80211_IFTYPE_AP:
3384         case NL80211_IFTYPE_P2P_GO:
3385                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3386                                                    iftype))
3387                         return -EINVAL;
3388                 if (wdev->links[link_id].ap.beacon_interval) {
3389                         struct ieee80211_channel *cur_chan;
3390
3391                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3392                             !(rdev->wiphy.features &
3393                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3394                                 return -EBUSY;
3395
3396                         /* Only allow dynamic channel width changes */
3397                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3398                         if (chandef.chan != cur_chan)
3399                                 return -EBUSY;
3400
3401                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3402                                                        &chandef);
3403                         if (result)
3404                                 return result;
3405                         wdev->links[link_id].ap.chandef = chandef;
3406                 } else {
3407                         wdev->u.ap.preset_chandef = chandef;
3408                 }
3409                 return 0;
3410         case NL80211_IFTYPE_MESH_POINT:
3411                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3412         case NL80211_IFTYPE_MONITOR:
3413                 return cfg80211_set_monitor_channel(rdev, &chandef);
3414         default:
3415                 break;
3416         }
3417
3418         return -EINVAL;
3419 }
3420
3421 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3422 {
3423         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3424         int link_id = nl80211_link_id_or_invalid(info->attrs);
3425         struct net_device *netdev = info->user_ptr[1];
3426         int ret;
3427
3428         wdev_lock(netdev->ieee80211_ptr);
3429         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3430         wdev_unlock(netdev->ieee80211_ptr);
3431
3432         return ret;
3433 }
3434
3435 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3436 {
3437         struct cfg80211_registered_device *rdev = NULL;
3438         struct net_device *netdev = NULL;
3439         struct wireless_dev *wdev;
3440         int result = 0, rem_txq_params = 0;
3441         struct nlattr *nl_txq_params;
3442         u32 changed;
3443         u8 retry_short = 0, retry_long = 0;
3444         u32 frag_threshold = 0, rts_threshold = 0;
3445         u8 coverage_class = 0;
3446         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3447
3448         rtnl_lock();
3449         /*
3450          * Try to find the wiphy and netdev. Normally this
3451          * function shouldn't need the netdev, but this is
3452          * done for backward compatibility -- previously
3453          * setting the channel was done per wiphy, but now
3454          * it is per netdev. Previous userland like hostapd
3455          * also passed a netdev to set_wiphy, so that it is
3456          * possible to let that go to the right netdev!
3457          */
3458
3459         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3460                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3461
3462                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3463                 if (netdev && netdev->ieee80211_ptr)
3464                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3465                 else
3466                         netdev = NULL;
3467         }
3468
3469         if (!netdev) {
3470                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3471                                                   info->attrs);
3472                 if (IS_ERR(rdev)) {
3473                         rtnl_unlock();
3474                         return PTR_ERR(rdev);
3475                 }
3476                 wdev = NULL;
3477                 netdev = NULL;
3478                 result = 0;
3479         } else
3480                 wdev = netdev->ieee80211_ptr;
3481
3482         wiphy_lock(&rdev->wiphy);
3483
3484         /*
3485          * end workaround code, by now the rdev is available
3486          * and locked, and wdev may or may not be NULL.
3487          */
3488
3489         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3490                 result = cfg80211_dev_rename(
3491                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3492         rtnl_unlock();
3493
3494         if (result)
3495                 goto out;
3496
3497         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3498                 struct ieee80211_txq_params txq_params;
3499                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3500
3501                 if (!rdev->ops->set_txq_params) {
3502                         result = -EOPNOTSUPP;
3503                         goto out;
3504                 }
3505
3506                 if (!netdev) {
3507                         result = -EINVAL;
3508                         goto out;
3509                 }
3510
3511                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3512                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3513                         result = -EINVAL;
3514                         goto out;
3515                 }
3516
3517                 if (!netif_running(netdev)) {
3518                         result = -ENETDOWN;
3519                         goto out;
3520                 }
3521
3522                 nla_for_each_nested(nl_txq_params,
3523                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3524                                     rem_txq_params) {
3525                         result = nla_parse_nested_deprecated(tb,
3526                                                              NL80211_TXQ_ATTR_MAX,
3527                                                              nl_txq_params,
3528                                                              txq_params_policy,
3529                                                              info->extack);
3530                         if (result)
3531                                 goto out;
3532                         result = parse_txq_params(tb, &txq_params);
3533                         if (result)
3534                                 goto out;
3535
3536                         txq_params.link_id =
3537                                 nl80211_link_id_or_invalid(info->attrs);
3538
3539                         wdev_lock(netdev->ieee80211_ptr);
3540                         if (txq_params.link_id >= 0 &&
3541                             !(netdev->ieee80211_ptr->valid_links &
3542                               BIT(txq_params.link_id)))
3543                                 result = -ENOLINK;
3544                         else if (txq_params.link_id >= 0 &&
3545                                  !netdev->ieee80211_ptr->valid_links)
3546                                 result = -EINVAL;
3547                         else
3548                                 result = rdev_set_txq_params(rdev, netdev,
3549                                                              &txq_params);
3550                         wdev_unlock(netdev->ieee80211_ptr);
3551                         if (result)
3552                                 goto out;
3553                 }
3554         }
3555
3556         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3557                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3558
3559                 if (wdev) {
3560                         wdev_lock(wdev);
3561                         result = __nl80211_set_channel(
3562                                 rdev,
3563                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3564                                 info, link_id);
3565                         wdev_unlock(wdev);
3566                 } else {
3567                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3568                 }
3569
3570                 if (result)
3571                         goto out;
3572         }
3573
3574         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3575                 struct wireless_dev *txp_wdev = wdev;
3576                 enum nl80211_tx_power_setting type;
3577                 int idx, mbm = 0;
3578
3579                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3580                         txp_wdev = NULL;
3581
3582                 if (!rdev->ops->set_tx_power) {
3583                         result = -EOPNOTSUPP;
3584                         goto out;
3585                 }
3586
3587                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3588                 type = nla_get_u32(info->attrs[idx]);
3589
3590                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3591                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3592                         result = -EINVAL;
3593                         goto out;
3594                 }
3595
3596                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3597                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3598                         mbm = nla_get_u32(info->attrs[idx]);
3599                 }
3600
3601                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3602                 if (result)
3603                         goto out;
3604         }
3605
3606         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3607             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3608                 u32 tx_ant, rx_ant;
3609
3610                 if ((!rdev->wiphy.available_antennas_tx &&
3611                      !rdev->wiphy.available_antennas_rx) ||
3612                     !rdev->ops->set_antenna) {
3613                         result = -EOPNOTSUPP;
3614                         goto out;
3615                 }
3616
3617                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3618                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3619
3620                 /* reject antenna configurations which don't match the
3621                  * available antenna masks, except for the "all" mask */
3622                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3623                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3624                         result = -EINVAL;
3625                         goto out;
3626                 }
3627
3628                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3629                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3630
3631                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3632                 if (result)
3633                         goto out;
3634         }
3635
3636         changed = 0;
3637
3638         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3639                 retry_short = nla_get_u8(
3640                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3641
3642                 changed |= WIPHY_PARAM_RETRY_SHORT;
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3646                 retry_long = nla_get_u8(
3647                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3648
3649                 changed |= WIPHY_PARAM_RETRY_LONG;
3650         }
3651
3652         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3653                 frag_threshold = nla_get_u32(
3654                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3655                 if (frag_threshold < 256) {
3656                         result = -EINVAL;
3657                         goto out;
3658                 }
3659
3660                 if (frag_threshold != (u32) -1) {
3661                         /*
3662                          * Fragments (apart from the last one) are required to
3663                          * have even length. Make the fragmentation code
3664                          * simpler by stripping LSB should someone try to use
3665                          * odd threshold value.
3666                          */
3667                         frag_threshold &= ~0x1;
3668                 }
3669                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3670         }
3671
3672         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3673                 rts_threshold = nla_get_u32(
3674                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3675                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3676         }
3677
3678         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3679                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3680                         result = -EINVAL;
3681                         goto out;
3682                 }
3683
3684                 coverage_class = nla_get_u8(
3685                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3686                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3687         }
3688
3689         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3690                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3691                         result = -EOPNOTSUPP;
3692                         goto out;
3693                 }
3694
3695                 changed |= WIPHY_PARAM_DYN_ACK;
3696         }
3697
3698         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3699                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3700                                              NL80211_EXT_FEATURE_TXQS)) {
3701                         result = -EOPNOTSUPP;
3702                         goto out;
3703                 }
3704                 txq_limit = nla_get_u32(
3705                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3706                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3707         }
3708
3709         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3710                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3711                                              NL80211_EXT_FEATURE_TXQS)) {
3712                         result = -EOPNOTSUPP;
3713                         goto out;
3714                 }
3715                 txq_memory_limit = nla_get_u32(
3716                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3717                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3718         }
3719
3720         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3721                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3722                                              NL80211_EXT_FEATURE_TXQS)) {
3723                         result = -EOPNOTSUPP;
3724                         goto out;
3725                 }
3726                 txq_quantum = nla_get_u32(
3727                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3728                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3729         }
3730
3731         if (changed) {
3732                 u8 old_retry_short, old_retry_long;
3733                 u32 old_frag_threshold, old_rts_threshold;
3734                 u8 old_coverage_class;
3735                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3736
3737                 if (!rdev->ops->set_wiphy_params) {
3738                         result = -EOPNOTSUPP;
3739                         goto out;
3740                 }
3741
3742                 old_retry_short = rdev->wiphy.retry_short;
3743                 old_retry_long = rdev->wiphy.retry_long;
3744                 old_frag_threshold = rdev->wiphy.frag_threshold;
3745                 old_rts_threshold = rdev->wiphy.rts_threshold;
3746                 old_coverage_class = rdev->wiphy.coverage_class;
3747                 old_txq_limit = rdev->wiphy.txq_limit;
3748                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3749                 old_txq_quantum = rdev->wiphy.txq_quantum;
3750
3751                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3752                         rdev->wiphy.retry_short = retry_short;
3753                 if (changed & WIPHY_PARAM_RETRY_LONG)
3754                         rdev->wiphy.retry_long = retry_long;
3755                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3756                         rdev->wiphy.frag_threshold = frag_threshold;
3757                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3758                         rdev->wiphy.rts_threshold = rts_threshold;
3759                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3760                         rdev->wiphy.coverage_class = coverage_class;
3761                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3762                         rdev->wiphy.txq_limit = txq_limit;
3763                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3764                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3765                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3766                         rdev->wiphy.txq_quantum = txq_quantum;
3767
3768                 result = rdev_set_wiphy_params(rdev, changed);
3769                 if (result) {
3770                         rdev->wiphy.retry_short = old_retry_short;
3771                         rdev->wiphy.retry_long = old_retry_long;
3772                         rdev->wiphy.frag_threshold = old_frag_threshold;
3773                         rdev->wiphy.rts_threshold = old_rts_threshold;
3774                         rdev->wiphy.coverage_class = old_coverage_class;
3775                         rdev->wiphy.txq_limit = old_txq_limit;
3776                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3777                         rdev->wiphy.txq_quantum = old_txq_quantum;
3778                         goto out;
3779                 }
3780         }
3781
3782         result = 0;
3783
3784 out:
3785         wiphy_unlock(&rdev->wiphy);
3786         return result;
3787 }
3788
3789 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3790 {
3791         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3792                 return -EINVAL;
3793
3794         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3795                         chandef->chan->center_freq))
3796                 return -ENOBUFS;
3797         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3798                         chandef->chan->freq_offset))
3799                 return -ENOBUFS;
3800         switch (chandef->width) {
3801         case NL80211_CHAN_WIDTH_20_NOHT:
3802         case NL80211_CHAN_WIDTH_20:
3803         case NL80211_CHAN_WIDTH_40:
3804                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3805                                 cfg80211_get_chandef_type(chandef)))
3806                         return -ENOBUFS;
3807                 break;
3808         default:
3809                 break;
3810         }
3811         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3812                 return -ENOBUFS;
3813         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3814                 return -ENOBUFS;
3815         if (chandef->center_freq2 &&
3816             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3817                 return -ENOBUFS;
3818         return 0;
3819 }
3820 EXPORT_SYMBOL(nl80211_send_chandef);
3821
3822 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3823                               struct cfg80211_registered_device *rdev,
3824                               struct wireless_dev *wdev,
3825                               enum nl80211_commands cmd)
3826 {
3827         struct net_device *dev = wdev->netdev;
3828         void *hdr;
3829
3830         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3831                 cmd != NL80211_CMD_DEL_INTERFACE &&
3832                 cmd != NL80211_CMD_SET_INTERFACE);
3833
3834         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3835         if (!hdr)
3836                 return -1;
3837
3838         if (dev &&
3839             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3840              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3841                 goto nla_put_failure;
3842
3843         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3844             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3845             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3846                               NL80211_ATTR_PAD) ||
3847             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3848             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3849                         rdev->devlist_generation ^
3850                         (cfg80211_rdev_list_generation << 2)) ||
3851             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3852                 goto nla_put_failure;
3853
3854         if (rdev->ops->get_channel && !wdev->valid_links) {
3855                 struct cfg80211_chan_def chandef = {};
3856                 int ret;
3857
3858                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3859                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3860                         goto nla_put_failure;
3861         }
3862
3863         if (rdev->ops->get_tx_power) {
3864                 int dbm, ret;
3865
3866                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3867                 if (ret == 0 &&
3868                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3869                                 DBM_TO_MBM(dbm)))
3870                         goto nla_put_failure;
3871         }
3872
3873         wdev_lock(wdev);
3874         switch (wdev->iftype) {
3875         case NL80211_IFTYPE_AP:
3876         case NL80211_IFTYPE_P2P_GO:
3877                 if (wdev->u.ap.ssid_len &&
3878                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3879                             wdev->u.ap.ssid))
3880                         goto nla_put_failure_locked;
3881                 break;
3882         case NL80211_IFTYPE_STATION:
3883         case NL80211_IFTYPE_P2P_CLIENT:
3884                 if (wdev->u.client.ssid_len &&
3885                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3886                             wdev->u.client.ssid))
3887                         goto nla_put_failure_locked;
3888                 break;
3889         case NL80211_IFTYPE_ADHOC:
3890                 if (wdev->u.ibss.ssid_len &&
3891                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3892                             wdev->u.ibss.ssid))
3893                         goto nla_put_failure_locked;
3894                 break;
3895         default:
3896                 /* nothing */
3897                 break;
3898         }
3899         wdev_unlock(wdev);
3900
3901         if (rdev->ops->get_txq_stats) {
3902                 struct cfg80211_txq_stats txqstats = {};
3903                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3904
3905                 if (ret == 0 &&
3906                     !nl80211_put_txq_stats(msg, &txqstats,
3907                                            NL80211_ATTR_TXQ_STATS))
3908                         goto nla_put_failure;
3909         }
3910
3911         if (wdev->valid_links) {
3912                 unsigned int link_id;
3913                 struct nlattr *links = nla_nest_start(msg,
3914                                                       NL80211_ATTR_MLO_LINKS);
3915
3916                 if (!links)
3917                         goto nla_put_failure;
3918
3919                 for_each_valid_link(wdev, link_id) {
3920                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3921                         struct cfg80211_chan_def chandef = {};
3922                         int ret;
3923
3924                         if (!link)
3925                                 goto nla_put_failure;
3926
3927                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3928                                 goto nla_put_failure;
3929                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3930                                     wdev->links[link_id].addr))
3931                                 goto nla_put_failure;
3932
3933                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3934                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3935                                 goto nla_put_failure;
3936
3937                         nla_nest_end(msg, link);
3938                 }
3939
3940                 nla_nest_end(msg, links);
3941         }
3942
3943         genlmsg_end(msg, hdr);
3944         return 0;
3945
3946  nla_put_failure_locked:
3947         wdev_unlock(wdev);
3948  nla_put_failure:
3949         genlmsg_cancel(msg, hdr);
3950         return -EMSGSIZE;
3951 }
3952
3953 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3954 {
3955         int wp_idx = 0;
3956         int if_idx = 0;
3957         int wp_start = cb->args[0];
3958         int if_start = cb->args[1];
3959         int filter_wiphy = -1;
3960         struct cfg80211_registered_device *rdev;
3961         struct wireless_dev *wdev;
3962         int ret;
3963
3964         rtnl_lock();
3965         if (!cb->args[2]) {
3966                 struct nl80211_dump_wiphy_state state = {
3967                         .filter_wiphy = -1,
3968                 };
3969
3970                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3971                 if (ret)
3972                         goto out_unlock;
3973
3974                 filter_wiphy = state.filter_wiphy;
3975
3976                 /*
3977                  * if filtering, set cb->args[2] to +1 since 0 is the default
3978                  * value needed to determine that parsing is necessary.
3979                  */
3980                 if (filter_wiphy >= 0)
3981                         cb->args[2] = filter_wiphy + 1;
3982                 else
3983                         cb->args[2] = -1;
3984         } else if (cb->args[2] > 0) {
3985                 filter_wiphy = cb->args[2] - 1;
3986         }
3987
3988         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3989                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3990                         continue;
3991                 if (wp_idx < wp_start) {
3992                         wp_idx++;
3993                         continue;
3994                 }
3995
3996                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3997                         continue;
3998
3999                 if_idx = 0;
4000
4001                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4002                         if (if_idx < if_start) {
4003                                 if_idx++;
4004                                 continue;
4005                         }
4006                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4007                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
4008                                                rdev, wdev,
4009                                                NL80211_CMD_NEW_INTERFACE) < 0) {
4010                                 goto out;
4011                         }
4012                         if_idx++;
4013                 }
4014
4015                 wp_idx++;
4016         }
4017  out:
4018         cb->args[0] = wp_idx;
4019         cb->args[1] = if_idx;
4020
4021         ret = skb->len;
4022  out_unlock:
4023         rtnl_unlock();
4024
4025         return ret;
4026 }
4027
4028 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4029 {
4030         struct sk_buff *msg;
4031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4032         struct wireless_dev *wdev = info->user_ptr[1];
4033
4034         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4035         if (!msg)
4036                 return -ENOMEM;
4037
4038         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4039                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4040                 nlmsg_free(msg);
4041                 return -ENOBUFS;
4042         }
4043
4044         return genlmsg_reply(msg, info);
4045 }
4046
4047 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4048         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4049         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4050         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4051         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4052         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4053         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4054 };
4055
4056 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4057 {
4058         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4059         int flag;
4060
4061         *mntrflags = 0;
4062
4063         if (!nla)
4064                 return -EINVAL;
4065
4066         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4067                 return -EINVAL;
4068
4069         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4070                 if (flags[flag])
4071                         *mntrflags |= (1<<flag);
4072
4073         *mntrflags |= MONITOR_FLAG_CHANGED;
4074
4075         return 0;
4076 }
4077
4078 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4079                                      enum nl80211_iftype type,
4080                                      struct genl_info *info,
4081                                      struct vif_params *params)
4082 {
4083         bool change = false;
4084         int err;
4085
4086         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4087                 if (type != NL80211_IFTYPE_MONITOR)
4088                         return -EINVAL;
4089
4090                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4091                                           &params->flags);
4092                 if (err)
4093                         return err;
4094
4095                 change = true;
4096         }
4097
4098         if (params->flags & MONITOR_FLAG_ACTIVE &&
4099             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4100                 return -EOPNOTSUPP;
4101
4102         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4103                 const u8 *mumimo_groups;
4104                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4105
4106                 if (type != NL80211_IFTYPE_MONITOR)
4107                         return -EINVAL;
4108
4109                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4110                         return -EOPNOTSUPP;
4111
4112                 mumimo_groups =
4113                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4114
4115                 /* bits 0 and 63 are reserved and must be zero */
4116                 if ((mumimo_groups[0] & BIT(0)) ||
4117                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4118                         return -EINVAL;
4119
4120                 params->vht_mumimo_groups = mumimo_groups;
4121                 change = true;
4122         }
4123
4124         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4125                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4126
4127                 if (type != NL80211_IFTYPE_MONITOR)
4128                         return -EINVAL;
4129
4130                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4131                         return -EOPNOTSUPP;
4132
4133                 params->vht_mumimo_follow_addr =
4134                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4135                 change = true;
4136         }
4137
4138         return change ? 1 : 0;
4139 }
4140
4141 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4142                                struct net_device *netdev, u8 use_4addr,
4143                                enum nl80211_iftype iftype)
4144 {
4145         if (!use_4addr) {
4146                 if (netdev && netif_is_bridge_port(netdev))
4147                         return -EBUSY;
4148                 return 0;
4149         }
4150
4151         switch (iftype) {
4152         case NL80211_IFTYPE_AP_VLAN:
4153                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4154                         return 0;
4155                 break;
4156         case NL80211_IFTYPE_STATION:
4157                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4158                         return 0;
4159                 break;
4160         default:
4161                 break;
4162         }
4163
4164         return -EOPNOTSUPP;
4165 }
4166
4167 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4168 {
4169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4170         struct vif_params params;
4171         int err;
4172         enum nl80211_iftype otype, ntype;
4173         struct net_device *dev = info->user_ptr[1];
4174         bool change = false;
4175
4176         memset(&params, 0, sizeof(params));
4177
4178         otype = ntype = dev->ieee80211_ptr->iftype;
4179
4180         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4181                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4182                 if (otype != ntype)
4183                         change = true;
4184         }
4185
4186         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4187                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4188
4189                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4190                         return -EINVAL;
4191                 if (netif_running(dev))
4192                         return -EBUSY;
4193
4194                 wdev_lock(wdev);
4195                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4196                              IEEE80211_MAX_MESH_ID_LEN);
4197                 wdev->u.mesh.id_up_len =
4198                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4199                 memcpy(wdev->u.mesh.id,
4200                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4201                        wdev->u.mesh.id_up_len);
4202                 wdev_unlock(wdev);
4203         }
4204
4205         if (info->attrs[NL80211_ATTR_4ADDR]) {
4206                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4207                 change = true;
4208                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4209                 if (err)
4210                         return err;
4211         } else {
4212                 params.use_4addr = -1;
4213         }
4214
4215         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4216         if (err < 0)
4217                 return err;
4218         if (err > 0)
4219                 change = true;
4220
4221         if (change)
4222                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4223         else
4224                 err = 0;
4225
4226         if (!err && params.use_4addr != -1)
4227                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4228
4229         if (change && !err) {
4230                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4231
4232                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4233         }
4234
4235         return err;
4236 }
4237
4238 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4239 {
4240         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4241         struct vif_params params;
4242         struct wireless_dev *wdev;
4243         struct sk_buff *msg;
4244         int err;
4245         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4246
4247         memset(&params, 0, sizeof(params));
4248
4249         if (!info->attrs[NL80211_ATTR_IFNAME])
4250                 return -EINVAL;
4251
4252         if (info->attrs[NL80211_ATTR_IFTYPE])
4253                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4254
4255         if (!rdev->ops->add_virtual_intf)
4256                 return -EOPNOTSUPP;
4257
4258         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4259              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4260             info->attrs[NL80211_ATTR_MAC]) {
4261                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4262                            ETH_ALEN);
4263                 if (!is_valid_ether_addr(params.macaddr))
4264                         return -EADDRNOTAVAIL;
4265         }
4266
4267         if (info->attrs[NL80211_ATTR_4ADDR]) {
4268                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4269                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4270                 if (err)
4271                         return err;
4272         }
4273
4274         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4275                 return -EOPNOTSUPP;
4276
4277         err = nl80211_parse_mon_options(rdev, type, info, &params);
4278         if (err < 0)
4279                 return err;
4280
4281         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4282         if (!msg)
4283                 return -ENOMEM;
4284
4285         wdev = rdev_add_virtual_intf(rdev,
4286                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4287                                 NET_NAME_USER, type, &params);
4288         if (WARN_ON(!wdev)) {
4289                 nlmsg_free(msg);
4290                 return -EPROTO;
4291         } else if (IS_ERR(wdev)) {
4292                 nlmsg_free(msg);
4293                 return PTR_ERR(wdev);
4294         }
4295
4296         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297                 wdev->owner_nlportid = info->snd_portid;
4298
4299         switch (type) {
4300         case NL80211_IFTYPE_MESH_POINT:
4301                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4302                         break;
4303                 wdev_lock(wdev);
4304                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4305                              IEEE80211_MAX_MESH_ID_LEN);
4306                 wdev->u.mesh.id_up_len =
4307                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4308                 memcpy(wdev->u.mesh.id,
4309                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4310                        wdev->u.mesh.id_up_len);
4311                 wdev_unlock(wdev);
4312                 break;
4313         case NL80211_IFTYPE_NAN:
4314         case NL80211_IFTYPE_P2P_DEVICE:
4315                 /*
4316                  * P2P Device and NAN do not have a netdev, so don't go
4317                  * through the netdev notifier and must be added here
4318                  */
4319                 cfg80211_init_wdev(wdev);
4320                 cfg80211_register_wdev(rdev, wdev);
4321                 break;
4322         default:
4323                 break;
4324         }
4325
4326         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4327                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4328                 nlmsg_free(msg);
4329                 return -ENOBUFS;
4330         }
4331
4332         return genlmsg_reply(msg, info);
4333 }
4334
4335 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4336 {
4337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338         int ret;
4339
4340         /* to avoid failing a new interface creation due to pending removal */
4341         cfg80211_destroy_ifaces(rdev);
4342
4343         wiphy_lock(&rdev->wiphy);
4344         ret = _nl80211_new_interface(skb, info);
4345         wiphy_unlock(&rdev->wiphy);
4346
4347         return ret;
4348 }
4349
4350 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4351 {
4352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4353         struct wireless_dev *wdev = info->user_ptr[1];
4354
4355         if (!rdev->ops->del_virtual_intf)
4356                 return -EOPNOTSUPP;
4357
4358         /*
4359          * We hold RTNL, so this is safe, without RTNL opencount cannot
4360          * reach 0, and thus the rdev cannot be deleted.
4361          *
4362          * We need to do it for the dev_close(), since that will call
4363          * the netdev notifiers, and we need to acquire the mutex there
4364          * but don't know if we get there from here or from some other
4365          * place (e.g. "ip link set ... down").
4366          */
4367         mutex_unlock(&rdev->wiphy.mtx);
4368
4369         /*
4370          * If we remove a wireless device without a netdev then clear
4371          * user_ptr[1] so that nl80211_post_doit won't dereference it
4372          * to check if it needs to do dev_put(). Otherwise it crashes
4373          * since the wdev has been freed, unlike with a netdev where
4374          * we need the dev_put() for the netdev to really be freed.
4375          */
4376         if (!wdev->netdev)
4377                 info->user_ptr[1] = NULL;
4378         else
4379                 dev_close(wdev->netdev);
4380
4381         mutex_lock(&rdev->wiphy.mtx);
4382
4383         return cfg80211_remove_virtual_intf(rdev, wdev);
4384 }
4385
4386 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4387 {
4388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4389         struct net_device *dev = info->user_ptr[1];
4390         u16 noack_map;
4391
4392         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4393                 return -EINVAL;
4394
4395         if (!rdev->ops->set_noack_map)
4396                 return -EOPNOTSUPP;
4397
4398         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4399
4400         return rdev_set_noack_map(rdev, dev, noack_map);
4401 }
4402
4403 static int nl80211_validate_key_link_id(struct genl_info *info,
4404                                         struct wireless_dev *wdev,
4405                                         int link_id, bool pairwise)
4406 {
4407         if (pairwise) {
4408                 if (link_id != -1) {
4409                         GENL_SET_ERR_MSG(info,
4410                                          "link ID not allowed for pairwise key");
4411                         return -EINVAL;
4412                 }
4413
4414                 return 0;
4415         }
4416
4417         if (wdev->valid_links) {
4418                 if (link_id == -1) {
4419                         GENL_SET_ERR_MSG(info,
4420                                          "link ID must for MLO group key");
4421                         return -EINVAL;
4422                 }
4423                 if (!(wdev->valid_links & BIT(link_id))) {
4424                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4425                         return -EINVAL;
4426                 }
4427         } else if (link_id != -1) {
4428                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4429                 return -EINVAL;
4430         }
4431
4432         return 0;
4433 }
4434
4435 struct get_key_cookie {
4436         struct sk_buff *msg;
4437         int error;
4438         int idx;
4439 };
4440
4441 static void get_key_callback(void *c, struct key_params *params)
4442 {
4443         struct nlattr *key;
4444         struct get_key_cookie *cookie = c;
4445
4446         if ((params->key &&
4447              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4448                      params->key_len, params->key)) ||
4449             (params->seq &&
4450              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4451                      params->seq_len, params->seq)) ||
4452             (params->cipher &&
4453              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4454                          params->cipher)))
4455                 goto nla_put_failure;
4456
4457         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4458         if (!key)
4459                 goto nla_put_failure;
4460
4461         if ((params->key &&
4462              nla_put(cookie->msg, NL80211_KEY_DATA,
4463                      params->key_len, params->key)) ||
4464             (params->seq &&
4465              nla_put(cookie->msg, NL80211_KEY_SEQ,
4466                      params->seq_len, params->seq)) ||
4467             (params->cipher &&
4468              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4469                          params->cipher)))
4470                 goto nla_put_failure;
4471
4472         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4473                 goto nla_put_failure;
4474
4475         nla_nest_end(cookie->msg, key);
4476
4477         return;
4478  nla_put_failure:
4479         cookie->error = 1;
4480 }
4481
4482 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4483 {
4484         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4485         int err;
4486         struct net_device *dev = info->user_ptr[1];
4487         u8 key_idx = 0;
4488         const u8 *mac_addr = NULL;
4489         bool pairwise;
4490         struct get_key_cookie cookie = {
4491                 .error = 0,
4492         };
4493         void *hdr;
4494         struct sk_buff *msg;
4495         bool bigtk_support = false;
4496         int link_id = nl80211_link_id_or_invalid(info->attrs);
4497         struct wireless_dev *wdev = dev->ieee80211_ptr;
4498
4499         if (wiphy_ext_feature_isset(&rdev->wiphy,
4500                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4501                 bigtk_support = true;
4502
4503         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4504              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4505             wiphy_ext_feature_isset(&rdev->wiphy,
4506                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4507                 bigtk_support = true;
4508
4509         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4510                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4511
4512                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4513                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4514                         return -EINVAL;
4515                 }
4516         }
4517
4518         if (info->attrs[NL80211_ATTR_MAC])
4519                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4520
4521         pairwise = !!mac_addr;
4522         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4523                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4524
4525                 if (kt != NL80211_KEYTYPE_GROUP &&
4526                     kt != NL80211_KEYTYPE_PAIRWISE)
4527                         return -EINVAL;
4528                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4529         }
4530
4531         if (!rdev->ops->get_key)
4532                 return -EOPNOTSUPP;
4533
4534         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4535                 return -ENOENT;
4536
4537         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4538         if (!msg)
4539                 return -ENOMEM;
4540
4541         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4542                              NL80211_CMD_NEW_KEY);
4543         if (!hdr)
4544                 goto nla_put_failure;
4545
4546         cookie.msg = msg;
4547         cookie.idx = key_idx;
4548
4549         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4550             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4551                 goto nla_put_failure;
4552         if (mac_addr &&
4553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4554                 goto nla_put_failure;
4555
4556         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4557         if (err)
4558                 goto free_msg;
4559
4560         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4561                            &cookie, get_key_callback);
4562
4563         if (err)
4564                 goto free_msg;
4565
4566         if (cookie.error)
4567                 goto nla_put_failure;
4568
4569         genlmsg_end(msg, hdr);
4570         return genlmsg_reply(msg, info);
4571
4572  nla_put_failure:
4573         err = -ENOBUFS;
4574  free_msg:
4575         nlmsg_free(msg);
4576         return err;
4577 }
4578
4579 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4580 {
4581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4582         struct key_parse key;
4583         int err;
4584         struct net_device *dev = info->user_ptr[1];
4585         int link_id = nl80211_link_id_or_invalid(info->attrs);
4586         struct wireless_dev *wdev = dev->ieee80211_ptr;
4587
4588         err = nl80211_parse_key(info, &key);
4589         if (err)
4590                 return err;
4591
4592         if (key.idx < 0)
4593                 return -EINVAL;
4594
4595         /* Only support setting default key and
4596          * Extended Key ID action NL80211_KEY_SET_TX.
4597          */
4598         if (!key.def && !key.defmgmt && !key.defbeacon &&
4599             !(key.p.mode == NL80211_KEY_SET_TX))
4600                 return -EINVAL;
4601
4602         wdev_lock(wdev);
4603
4604         if (key.def) {
4605                 if (!rdev->ops->set_default_key) {
4606                         err = -EOPNOTSUPP;
4607                         goto out;
4608                 }
4609
4610                 err = nl80211_key_allowed(wdev);
4611                 if (err)
4612                         goto out;
4613
4614                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4615                 if (err)
4616                         goto out;
4617
4618                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4619                                            key.def_uni, key.def_multi);
4620
4621                 if (err)
4622                         goto out;
4623
4624 #ifdef CONFIG_CFG80211_WEXT
4625                 wdev->wext.default_key = key.idx;
4626 #endif
4627         } else if (key.defmgmt) {
4628                 if (key.def_uni || !key.def_multi) {
4629                         err = -EINVAL;
4630                         goto out;
4631                 }
4632
4633                 if (!rdev->ops->set_default_mgmt_key) {
4634                         err = -EOPNOTSUPP;
4635                         goto out;
4636                 }
4637
4638                 err = nl80211_key_allowed(wdev);
4639                 if (err)
4640                         goto out;
4641
4642                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4643                 if (err)
4644                         goto out;
4645
4646                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4647                 if (err)
4648                         goto out;
4649
4650 #ifdef CONFIG_CFG80211_WEXT
4651                 wdev->wext.default_mgmt_key = key.idx;
4652 #endif
4653         } else if (key.defbeacon) {
4654                 if (key.def_uni || !key.def_multi) {
4655                         err = -EINVAL;
4656                         goto out;
4657                 }
4658
4659                 if (!rdev->ops->set_default_beacon_key) {
4660                         err = -EOPNOTSUPP;
4661                         goto out;
4662                 }
4663
4664                 err = nl80211_key_allowed(wdev);
4665                 if (err)
4666                         goto out;
4667
4668                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4669                 if (err)
4670                         goto out;
4671
4672                 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4673                 if (err)
4674                         goto out;
4675         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4676                    wiphy_ext_feature_isset(&rdev->wiphy,
4677                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4678                 u8 *mac_addr = NULL;
4679
4680                 if (info->attrs[NL80211_ATTR_MAC])
4681                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4682
4683                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4684                         err = -EINVAL;
4685                         goto out;
4686                 }
4687
4688                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4689                 if (err)
4690                         goto out;
4691
4692                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4693                                    NL80211_KEYTYPE_PAIRWISE,
4694                                    mac_addr, &key.p);
4695         } else {
4696                 err = -EINVAL;
4697         }
4698  out:
4699         wdev_unlock(wdev);
4700
4701         return err;
4702 }
4703
4704 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4705 {
4706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4707         int err;
4708         struct net_device *dev = info->user_ptr[1];
4709         struct key_parse key;
4710         const u8 *mac_addr = NULL;
4711         int link_id = nl80211_link_id_or_invalid(info->attrs);
4712         struct wireless_dev *wdev = dev->ieee80211_ptr;
4713
4714         err = nl80211_parse_key(info, &key);
4715         if (err)
4716                 return err;
4717
4718         if (!key.p.key) {
4719                 GENL_SET_ERR_MSG(info, "no key");
4720                 return -EINVAL;
4721         }
4722
4723         if (info->attrs[NL80211_ATTR_MAC])
4724                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4725
4726         if (key.type == -1) {
4727                 if (mac_addr)
4728                         key.type = NL80211_KEYTYPE_PAIRWISE;
4729                 else
4730                         key.type = NL80211_KEYTYPE_GROUP;
4731         }
4732
4733         /* for now */
4734         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4735             key.type != NL80211_KEYTYPE_GROUP) {
4736                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4737                 return -EINVAL;
4738         }
4739
4740         if (key.type == NL80211_KEYTYPE_GROUP &&
4741             info->attrs[NL80211_ATTR_VLAN_ID])
4742                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4743
4744         if (!rdev->ops->add_key)
4745                 return -EOPNOTSUPP;
4746
4747         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4748                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4749                                            mac_addr)) {
4750                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4751                 return -EINVAL;
4752         }
4753
4754         wdev_lock(wdev);
4755         err = nl80211_key_allowed(wdev);
4756         if (err)
4757                 GENL_SET_ERR_MSG(info, "key not allowed");
4758
4759         if (!err)
4760                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4761                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4762
4763         if (!err) {
4764                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4765                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4766                                     mac_addr, &key.p);
4767                 if (err)
4768                         GENL_SET_ERR_MSG(info, "key addition failed");
4769         }
4770         wdev_unlock(wdev);
4771
4772         return err;
4773 }
4774
4775 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4776 {
4777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4778         int err;
4779         struct net_device *dev = info->user_ptr[1];
4780         u8 *mac_addr = NULL;
4781         struct key_parse key;
4782         int link_id = nl80211_link_id_or_invalid(info->attrs);
4783         struct wireless_dev *wdev = dev->ieee80211_ptr;
4784
4785         err = nl80211_parse_key(info, &key);
4786         if (err)
4787                 return err;
4788
4789         if (info->attrs[NL80211_ATTR_MAC])
4790                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4791
4792         if (key.type == -1) {
4793                 if (mac_addr)
4794                         key.type = NL80211_KEYTYPE_PAIRWISE;
4795                 else
4796                         key.type = NL80211_KEYTYPE_GROUP;
4797         }
4798
4799         /* for now */
4800         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4801             key.type != NL80211_KEYTYPE_GROUP)
4802                 return -EINVAL;
4803
4804         if (!cfg80211_valid_key_idx(rdev, key.idx,
4805                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4806                 return -EINVAL;
4807
4808         if (!rdev->ops->del_key)
4809                 return -EOPNOTSUPP;
4810
4811         wdev_lock(wdev);
4812         err = nl80211_key_allowed(wdev);
4813
4814         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4815             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4816                 err = -ENOENT;
4817
4818         if (!err)
4819                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4820                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4821
4822         if (!err)
4823                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4824                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4825                                    mac_addr);
4826
4827 #ifdef CONFIG_CFG80211_WEXT
4828         if (!err) {
4829                 if (key.idx == wdev->wext.default_key)
4830                         wdev->wext.default_key = -1;
4831                 else if (key.idx == wdev->wext.default_mgmt_key)
4832                         wdev->wext.default_mgmt_key = -1;
4833         }
4834 #endif
4835         wdev_unlock(wdev);
4836
4837         return err;
4838 }
4839
4840 /* This function returns an error or the number of nested attributes */
4841 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4842 {
4843         struct nlattr *attr;
4844         int n_entries = 0, tmp;
4845
4846         nla_for_each_nested(attr, nl_attr, tmp) {
4847                 if (nla_len(attr) != ETH_ALEN)
4848                         return -EINVAL;
4849
4850                 n_entries++;
4851         }
4852
4853         return n_entries;
4854 }
4855
4856 /*
4857  * This function parses ACL information and allocates memory for ACL data.
4858  * On successful return, the calling function is responsible to free the
4859  * ACL buffer returned by this function.
4860  */
4861 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4862                                                 struct genl_info *info)
4863 {
4864         enum nl80211_acl_policy acl_policy;
4865         struct nlattr *attr;
4866         struct cfg80211_acl_data *acl;
4867         int i = 0, n_entries, tmp;
4868
4869         if (!wiphy->max_acl_mac_addrs)
4870                 return ERR_PTR(-EOPNOTSUPP);
4871
4872         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4873                 return ERR_PTR(-EINVAL);
4874
4875         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4876         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4877             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4878                 return ERR_PTR(-EINVAL);
4879
4880         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4881                 return ERR_PTR(-EINVAL);
4882
4883         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4884         if (n_entries < 0)
4885                 return ERR_PTR(n_entries);
4886
4887         if (n_entries > wiphy->max_acl_mac_addrs)
4888                 return ERR_PTR(-ENOTSUPP);
4889
4890         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4891         if (!acl)
4892                 return ERR_PTR(-ENOMEM);
4893         acl->n_acl_entries = n_entries;
4894
4895         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4896                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4897                 i++;
4898         }
4899         acl->acl_policy = acl_policy;
4900
4901         return acl;
4902 }
4903
4904 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4905 {
4906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4907         struct net_device *dev = info->user_ptr[1];
4908         struct cfg80211_acl_data *acl;
4909         int err;
4910
4911         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4912             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4913                 return -EOPNOTSUPP;
4914
4915         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4916                 return -EINVAL;
4917
4918         acl = parse_acl_data(&rdev->wiphy, info);
4919         if (IS_ERR(acl))
4920                 return PTR_ERR(acl);
4921
4922         err = rdev_set_mac_acl(rdev, dev, acl);
4923
4924         kfree(acl);
4925
4926         return err;
4927 }
4928
4929 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4930                            u8 *rates, u8 rates_len)
4931 {
4932         u8 i;
4933         u32 mask = 0;
4934
4935         for (i = 0; i < rates_len; i++) {
4936                 int rate = (rates[i] & 0x7f) * 5;
4937                 int ridx;
4938
4939                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4940                         struct ieee80211_rate *srate =
4941                                 &sband->bitrates[ridx];
4942                         if (rate == srate->bitrate) {
4943                                 mask |= 1 << ridx;
4944                                 break;
4945                         }
4946                 }
4947                 if (ridx == sband->n_bitrates)
4948                         return 0; /* rate not found */
4949         }
4950
4951         return mask;
4952 }
4953
4954 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4955                                u8 *rates, u8 rates_len,
4956                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4957 {
4958         u8 i;
4959
4960         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4961
4962         for (i = 0; i < rates_len; i++) {
4963                 int ridx, rbit;
4964
4965                 ridx = rates[i] / 8;
4966                 rbit = BIT(rates[i] % 8);
4967
4968                 /* check validity */
4969                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4970                         return false;
4971
4972                 /* check availability */
4973                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4974                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4975                         mcs[ridx] |= rbit;
4976                 else
4977                         return false;
4978         }
4979
4980         return true;
4981 }
4982
4983 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4984 {
4985         u16 mcs_mask = 0;
4986
4987         switch (vht_mcs_map) {
4988         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4989                 break;
4990         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4991                 mcs_mask = 0x00FF;
4992                 break;
4993         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4994                 mcs_mask = 0x01FF;
4995                 break;
4996         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4997                 mcs_mask = 0x03FF;
4998                 break;
4999         default:
5000                 break;
5001         }
5002
5003         return mcs_mask;
5004 }
5005
5006 static void vht_build_mcs_mask(u16 vht_mcs_map,
5007                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
5008 {
5009         u8 nss;
5010
5011         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
5012                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
5013                 vht_mcs_map >>= 2;
5014         }
5015 }
5016
5017 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5018                              struct nl80211_txrate_vht *txrate,
5019                              u16 mcs[NL80211_VHT_NSS_MAX])
5020 {
5021         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5022         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5023         u8 i;
5024
5025         if (!sband->vht_cap.vht_supported)
5026                 return false;
5027
5028         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5029
5030         /* Build vht_mcs_mask from VHT capabilities */
5031         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5032
5033         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5034                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5035                         mcs[i] = txrate->mcs[i];
5036                 else
5037                         return false;
5038         }
5039
5040         return true;
5041 }
5042
5043 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5044 {
5045         switch (he_mcs_map) {
5046         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5047                 return 0;
5048         case IEEE80211_HE_MCS_SUPPORT_0_7:
5049                 return 0x00FF;
5050         case IEEE80211_HE_MCS_SUPPORT_0_9:
5051                 return 0x03FF;
5052         case IEEE80211_HE_MCS_SUPPORT_0_11:
5053                 return 0xFFF;
5054         default:
5055                 break;
5056         }
5057         return 0;
5058 }
5059
5060 static void he_build_mcs_mask(u16 he_mcs_map,
5061                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5062 {
5063         u8 nss;
5064
5065         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5066                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5067                 he_mcs_map >>= 2;
5068         }
5069 }
5070
5071 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5072                            const struct ieee80211_sta_he_cap *he_cap)
5073 {
5074         struct net_device *dev = info->user_ptr[1];
5075         struct wireless_dev *wdev = dev->ieee80211_ptr;
5076         struct cfg80211_chan_def *chandef;
5077         __le16 tx_mcs;
5078
5079         chandef = wdev_chandef(wdev, link_id);
5080         if (!chandef) {
5081                 /*
5082                  * This is probably broken, but we never maintained
5083                  * a chandef in these cases, so it always was.
5084                  */
5085                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5086         }
5087
5088         switch (chandef->width) {
5089         case NL80211_CHAN_WIDTH_80P80:
5090                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5091                 break;
5092         case NL80211_CHAN_WIDTH_160:
5093                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5094                 break;
5095         default:
5096                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5097                 break;
5098         }
5099
5100         return le16_to_cpu(tx_mcs);
5101 }
5102
5103 static bool he_set_mcs_mask(struct genl_info *info,
5104                             struct wireless_dev *wdev,
5105                             struct ieee80211_supported_band *sband,
5106                             struct nl80211_txrate_he *txrate,
5107                             u16 mcs[NL80211_HE_NSS_MAX],
5108                             unsigned int link_id)
5109 {
5110         const struct ieee80211_sta_he_cap *he_cap;
5111         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5112         u16 tx_mcs_map = 0;
5113         u8 i;
5114
5115         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5116         if (!he_cap)
5117                 return false;
5118
5119         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5120
5121         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5122
5123         /* Build he_mcs_mask from HE capabilities */
5124         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5125
5126         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5127                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5128                         mcs[i] = txrate->mcs[i];
5129                 else
5130                         return false;
5131         }
5132
5133         return true;
5134 }
5135
5136 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5137                                          struct nlattr *attrs[],
5138                                          enum nl80211_attrs attr,
5139                                          struct cfg80211_bitrate_mask *mask,
5140                                          struct net_device *dev,
5141                                          bool default_all_enabled,
5142                                          unsigned int link_id)
5143 {
5144         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5146         struct wireless_dev *wdev = dev->ieee80211_ptr;
5147         int rem, i;
5148         struct nlattr *tx_rates;
5149         struct ieee80211_supported_band *sband;
5150         u16 vht_tx_mcs_map, he_tx_mcs_map;
5151
5152         memset(mask, 0, sizeof(*mask));
5153         /* Default to all rates enabled */
5154         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5155                 const struct ieee80211_sta_he_cap *he_cap;
5156
5157                 if (!default_all_enabled)
5158                         break;
5159
5160                 sband = rdev->wiphy.bands[i];
5161
5162                 if (!sband)
5163                         continue;
5164
5165                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5166                 memcpy(mask->control[i].ht_mcs,
5167                        sband->ht_cap.mcs.rx_mask,
5168                        sizeof(mask->control[i].ht_mcs));
5169
5170                 if (sband->vht_cap.vht_supported) {
5171                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5172                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5173                 }
5174
5175                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5176                 if (!he_cap)
5177                         continue;
5178
5179                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5180                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5181
5182                 mask->control[i].he_gi = 0xFF;
5183                 mask->control[i].he_ltf = 0xFF;
5184         }
5185
5186         /* if no rates are given set it back to the defaults */
5187         if (!attrs[attr])
5188                 goto out;
5189
5190         /* The nested attribute uses enum nl80211_band as the index. This maps
5191          * directly to the enum nl80211_band values used in cfg80211.
5192          */
5193         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5194         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5195                 enum nl80211_band band = nla_type(tx_rates);
5196                 int err;
5197
5198                 if (band < 0 || band >= NUM_NL80211_BANDS)
5199                         return -EINVAL;
5200                 sband = rdev->wiphy.bands[band];
5201                 if (sband == NULL)
5202                         return -EINVAL;
5203                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5204                                                   tx_rates,
5205                                                   nl80211_txattr_policy,
5206                                                   info->extack);
5207                 if (err)
5208                         return err;
5209                 if (tb[NL80211_TXRATE_LEGACY]) {
5210                         mask->control[band].legacy = rateset_to_mask(
5211                                 sband,
5212                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5213                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5214                         if ((mask->control[band].legacy == 0) &&
5215                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5216                                 return -EINVAL;
5217                 }
5218                 if (tb[NL80211_TXRATE_HT]) {
5219                         if (!ht_rateset_to_mask(
5220                                         sband,
5221                                         nla_data(tb[NL80211_TXRATE_HT]),
5222                                         nla_len(tb[NL80211_TXRATE_HT]),
5223                                         mask->control[band].ht_mcs))
5224                                 return -EINVAL;
5225                 }
5226
5227                 if (tb[NL80211_TXRATE_VHT]) {
5228                         if (!vht_set_mcs_mask(
5229                                         sband,
5230                                         nla_data(tb[NL80211_TXRATE_VHT]),
5231                                         mask->control[band].vht_mcs))
5232                                 return -EINVAL;
5233                 }
5234
5235                 if (tb[NL80211_TXRATE_GI]) {
5236                         mask->control[band].gi =
5237                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5238                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5239                                 return -EINVAL;
5240                 }
5241                 if (tb[NL80211_TXRATE_HE] &&
5242                     !he_set_mcs_mask(info, wdev, sband,
5243                                      nla_data(tb[NL80211_TXRATE_HE]),
5244                                      mask->control[band].he_mcs,
5245                                      link_id))
5246                         return -EINVAL;
5247
5248                 if (tb[NL80211_TXRATE_HE_GI])
5249                         mask->control[band].he_gi =
5250                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5251                 if (tb[NL80211_TXRATE_HE_LTF])
5252                         mask->control[band].he_ltf =
5253                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5254
5255                 if (mask->control[band].legacy == 0) {
5256                         /* don't allow empty legacy rates if HT, VHT or HE
5257                          * are not even supported.
5258                          */
5259                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5260                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5261                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5262                                 return -EINVAL;
5263
5264                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5265                                 if (mask->control[band].ht_mcs[i])
5266                                         goto out;
5267
5268                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5269                                 if (mask->control[band].vht_mcs[i])
5270                                         goto out;
5271
5272                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5273                                 if (mask->control[band].he_mcs[i])
5274                                         goto out;
5275
5276                         /* legacy and mcs rates may not be both empty */
5277                         return -EINVAL;
5278                 }
5279         }
5280
5281 out:
5282         return 0;
5283 }
5284
5285 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5286                                    enum nl80211_band band,
5287                                    struct cfg80211_bitrate_mask *beacon_rate)
5288 {
5289         u32 count_ht, count_vht, count_he, i;
5290         u32 rate = beacon_rate->control[band].legacy;
5291
5292         /* Allow only one rate */
5293         if (hweight32(rate) > 1)
5294                 return -EINVAL;
5295
5296         count_ht = 0;
5297         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5298                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5299                         return -EINVAL;
5300                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5301                         count_ht++;
5302                         if (count_ht > 1)
5303                                 return -EINVAL;
5304                 }
5305                 if (count_ht && rate)
5306                         return -EINVAL;
5307         }
5308
5309         count_vht = 0;
5310         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5311                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5312                         return -EINVAL;
5313                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5314                         count_vht++;
5315                         if (count_vht > 1)
5316                                 return -EINVAL;
5317                 }
5318                 if (count_vht && rate)
5319                         return -EINVAL;
5320         }
5321
5322         count_he = 0;
5323         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5324                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5325                         return -EINVAL;
5326                 } else if (beacon_rate->control[band].he_mcs[i]) {
5327                         count_he++;
5328                         if (count_he > 1)
5329                                 return -EINVAL;
5330                 }
5331                 if (count_he && rate)
5332                         return -EINVAL;
5333         }
5334
5335         if ((count_ht && count_vht && count_he) ||
5336             (!rate && !count_ht && !count_vht && !count_he))
5337                 return -EINVAL;
5338
5339         if (rate &&
5340             !wiphy_ext_feature_isset(&rdev->wiphy,
5341                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5342                 return -EINVAL;
5343         if (count_ht &&
5344             !wiphy_ext_feature_isset(&rdev->wiphy,
5345                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5346                 return -EINVAL;
5347         if (count_vht &&
5348             !wiphy_ext_feature_isset(&rdev->wiphy,
5349                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5350                 return -EINVAL;
5351         if (count_he &&
5352             !wiphy_ext_feature_isset(&rdev->wiphy,
5353                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5354                 return -EINVAL;
5355
5356         return 0;
5357 }
5358
5359 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5360                                        struct net_device *dev,
5361                                        struct nlattr *attrs,
5362                                        struct cfg80211_mbssid_config *config,
5363                                        u8 num_elems)
5364 {
5365         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5366
5367         if (!wiphy->mbssid_max_interfaces)
5368                 return -EOPNOTSUPP;
5369
5370         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5371                              NULL) ||
5372             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5373                 return -EINVAL;
5374
5375         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5376         if (config->ema) {
5377                 if (!wiphy->ema_max_profile_periodicity)
5378                         return -EOPNOTSUPP;
5379
5380                 if (num_elems > wiphy->ema_max_profile_periodicity)
5381                         return -EINVAL;
5382         }
5383
5384         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5385         if (config->index >= wiphy->mbssid_max_interfaces ||
5386             (!config->index && !num_elems))
5387                 return -EINVAL;
5388
5389         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5390                 u32 tx_ifindex =
5391                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5392
5393                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5394                     (config->index && tx_ifindex == dev->ifindex))
5395                         return -EINVAL;
5396
5397                 if (tx_ifindex != dev->ifindex) {
5398                         struct net_device *tx_netdev =
5399                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5400
5401                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5402                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5403                             tx_netdev->ieee80211_ptr->iftype !=
5404                                                         NL80211_IFTYPE_AP) {
5405                                 dev_put(tx_netdev);
5406                                 return -EINVAL;
5407                         }
5408
5409                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5410                 } else {
5411                         config->tx_wdev = dev->ieee80211_ptr;
5412                 }
5413         } else if (!config->index) {
5414                 config->tx_wdev = dev->ieee80211_ptr;
5415         } else {
5416                 return -EINVAL;
5417         }
5418
5419         return 0;
5420 }
5421
5422 static struct cfg80211_mbssid_elems *
5423 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5424 {
5425         struct nlattr *nl_elems;
5426         struct cfg80211_mbssid_elems *elems;
5427         int rem_elems;
5428         u8 i = 0, num_elems = 0;
5429
5430         if (!wiphy->mbssid_max_interfaces)
5431                 return ERR_PTR(-EINVAL);
5432
5433         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5434                 if (num_elems >= 255)
5435                         return ERR_PTR(-EINVAL);
5436                 num_elems++;
5437         }
5438
5439         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5440         if (!elems)
5441                 return ERR_PTR(-ENOMEM);
5442         elems->cnt = num_elems;
5443
5444         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5445                 elems->elem[i].data = nla_data(nl_elems);
5446                 elems->elem[i].len = nla_len(nl_elems);
5447                 i++;
5448         }
5449         return elems;
5450 }
5451
5452 static struct cfg80211_rnr_elems *
5453 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5454                         struct netlink_ext_ack *extack)
5455 {
5456         struct nlattr *nl_elems;
5457         struct cfg80211_rnr_elems *elems;
5458         int rem_elems;
5459         u8 i = 0, num_elems = 0;
5460
5461         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5462                 int ret;
5463
5464                 ret = validate_ie_attr(nl_elems, extack);
5465                 if (ret)
5466                         return ERR_PTR(ret);
5467
5468                 num_elems++;
5469         }
5470
5471         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5472         if (!elems)
5473                 return ERR_PTR(-ENOMEM);
5474         elems->cnt = num_elems;
5475
5476         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5477                 elems->elem[i].data = nla_data(nl_elems);
5478                 elems->elem[i].len = nla_len(nl_elems);
5479                 i++;
5480         }
5481         return elems;
5482 }
5483
5484 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5485                                       struct cfg80211_he_bss_color *he_bss_color)
5486 {
5487         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5488         int err;
5489
5490         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5491                                he_bss_color_policy, NULL);
5492         if (err)
5493                 return err;
5494
5495         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5496                 return -EINVAL;
5497
5498         he_bss_color->color =
5499                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5500         he_bss_color->enabled =
5501                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5502         he_bss_color->partial =
5503                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5504
5505         return 0;
5506 }
5507
5508 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5509                                 struct nlattr *attrs[],
5510                                 struct cfg80211_beacon_data *bcn,
5511                                 struct netlink_ext_ack *extack)
5512 {
5513         bool haveinfo = false;
5514         int err;
5515
5516         memset(bcn, 0, sizeof(*bcn));
5517
5518         bcn->link_id = nl80211_link_id(attrs);
5519
5520         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5521                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5522                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5523                 if (!bcn->head_len)
5524                         return -EINVAL;
5525                 haveinfo = true;
5526         }
5527
5528         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5529                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5530                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5531                 haveinfo = true;
5532         }
5533
5534         if (!haveinfo)
5535                 return -EINVAL;
5536
5537         if (attrs[NL80211_ATTR_IE]) {
5538                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5539                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5540         }
5541
5542         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5543                 bcn->proberesp_ies =
5544                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5545                 bcn->proberesp_ies_len =
5546                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5547         }
5548
5549         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5550                 bcn->assocresp_ies =
5551                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5552                 bcn->assocresp_ies_len =
5553                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5554         }
5555
5556         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5557                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5558                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5559         }
5560
5561         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5562                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5563
5564                 err = nla_parse_nested_deprecated(tb,
5565                                                   NL80211_FTM_RESP_ATTR_MAX,
5566                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5567                                                   NULL, NULL);
5568                 if (err)
5569                         return err;
5570
5571                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5572                     wiphy_ext_feature_isset(&rdev->wiphy,
5573                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5574                         bcn->ftm_responder = 1;
5575                 else
5576                         return -EOPNOTSUPP;
5577
5578                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5579                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5580                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5581                 }
5582
5583                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5584                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5585                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5586                 }
5587         } else {
5588                 bcn->ftm_responder = -1;
5589         }
5590
5591         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5592                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5593                                                  &bcn->he_bss_color);
5594                 if (err)
5595                         return err;
5596                 bcn->he_bss_color_valid = true;
5597         }
5598
5599         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5600                 struct cfg80211_mbssid_elems *mbssid =
5601                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5602                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5603
5604                 if (IS_ERR(mbssid))
5605                         return PTR_ERR(mbssid);
5606
5607                 bcn->mbssid_ies = mbssid;
5608
5609                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5610                         struct cfg80211_rnr_elems *rnr =
5611                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5612                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5613                                                         extack);
5614
5615                         if (IS_ERR(rnr))
5616                                 return PTR_ERR(rnr);
5617
5618                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5619                                 return -EINVAL;
5620
5621                         bcn->rnr_ies = rnr;
5622                 }
5623         }
5624
5625         return 0;
5626 }
5627
5628 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5629                                     struct ieee80211_he_obss_pd *he_obss_pd)
5630 {
5631         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5632         int err;
5633
5634         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5635                                he_obss_pd_policy, NULL);
5636         if (err)
5637                 return err;
5638
5639         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5640                 return -EINVAL;
5641
5642         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5643
5644         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5645                 he_obss_pd->min_offset =
5646                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5647         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5648                 he_obss_pd->max_offset =
5649                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5650         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5651                 he_obss_pd->non_srg_max_offset =
5652                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5653
5654         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5655                 return -EINVAL;
5656
5657         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5658                 memcpy(he_obss_pd->bss_color_bitmap,
5659                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5660                        sizeof(he_obss_pd->bss_color_bitmap));
5661
5662         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5663                 memcpy(he_obss_pd->partial_bssid_bitmap,
5664                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5665                        sizeof(he_obss_pd->partial_bssid_bitmap));
5666
5667         he_obss_pd->enable = true;
5668
5669         return 0;
5670 }
5671
5672 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5673                                         struct nlattr *attrs,
5674                                         struct cfg80211_ap_settings *params)
5675 {
5676         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5677         int ret;
5678         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5679
5680         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5681                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5682                 return -EINVAL;
5683
5684         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5685                                NULL, NULL);
5686         if (ret)
5687                 return ret;
5688
5689         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5690             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5691             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5692                 return -EINVAL;
5693
5694         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5695         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5696         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5697         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5698
5699         return 0;
5700 }
5701
5702 static int
5703 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5704                                      struct nlattr *attrs,
5705                                      struct cfg80211_ap_settings *params)
5706 {
5707         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5708         int ret;
5709         struct cfg80211_unsol_bcast_probe_resp *presp =
5710                                         &params->unsol_bcast_probe_resp;
5711
5712         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5713                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5714                 return -EINVAL;
5715
5716         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5717                                attrs, NULL, NULL);
5718         if (ret)
5719                 return ret;
5720
5721         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5722             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5723                 return -EINVAL;
5724
5725         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5726         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5727         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5728         return 0;
5729 }
5730
5731 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5732                                             const struct element *rates)
5733 {
5734         int i;
5735
5736         if (!rates)
5737                 return;
5738
5739         for (i = 0; i < rates->datalen; i++) {
5740                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5741                         params->ht_required = true;
5742                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5743                         params->vht_required = true;
5744                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5745                         params->he_required = true;
5746                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5747                         params->sae_h2e_required = true;
5748         }
5749 }
5750
5751 /*
5752  * Since the nl80211 API didn't include, from the beginning, attributes about
5753  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5754  * benefit of drivers that rebuild IEs in the firmware.
5755  */
5756 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5757 {
5758         const struct cfg80211_beacon_data *bcn = &params->beacon;
5759         size_t ies_len = bcn->tail_len;
5760         const u8 *ies = bcn->tail;
5761         const struct element *rates;
5762         const struct element *cap;
5763
5764         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5765         nl80211_check_ap_rate_selectors(params, rates);
5766
5767         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5768         nl80211_check_ap_rate_selectors(params, rates);
5769
5770         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5771         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5772                 params->ht_cap = (void *)cap->data;
5773         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5774         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5775                 params->vht_cap = (void *)cap->data;
5776         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5777         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5778                 params->he_cap = (void *)(cap->data + 1);
5779         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5780         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5781                 params->he_oper = (void *)(cap->data + 1);
5782         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5783         if (cap) {
5784                 if (!cap->datalen)
5785                         return -EINVAL;
5786                 params->eht_cap = (void *)(cap->data + 1);
5787                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5788                                                 (const u8 *)params->eht_cap,
5789                                                 cap->datalen - 1, true))
5790                         return -EINVAL;
5791         }
5792         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5793         if (cap) {
5794                 if (!cap->datalen)
5795                         return -EINVAL;
5796                 params->eht_oper = (void *)(cap->data + 1);
5797                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5798                                                 cap->datalen - 1))
5799                         return -EINVAL;
5800         }
5801         return 0;
5802 }
5803
5804 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5805                                    struct cfg80211_ap_settings *params)
5806 {
5807         struct wireless_dev *wdev;
5808
5809         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5810                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5811                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5812                         continue;
5813
5814                 if (!wdev->u.ap.preset_chandef.chan)
5815                         continue;
5816
5817                 params->chandef = wdev->u.ap.preset_chandef;
5818                 return true;
5819         }
5820
5821         return false;
5822 }
5823
5824 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5825                                     enum nl80211_auth_type auth_type,
5826                                     enum nl80211_commands cmd)
5827 {
5828         if (auth_type > NL80211_AUTHTYPE_MAX)
5829                 return false;
5830
5831         switch (cmd) {
5832         case NL80211_CMD_AUTHENTICATE:
5833                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5834                     auth_type == NL80211_AUTHTYPE_SAE)
5835                         return false;
5836                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5837                                              NL80211_EXT_FEATURE_FILS_STA) &&
5838                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5839                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5840                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5841                         return false;
5842                 return true;
5843         case NL80211_CMD_CONNECT:
5844                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5845                     !wiphy_ext_feature_isset(&rdev->wiphy,
5846                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5847                     auth_type == NL80211_AUTHTYPE_SAE)
5848                         return false;
5849
5850                 /* FILS with SK PFS or PK not supported yet */
5851                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5852                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5853                         return false;
5854                 if (!wiphy_ext_feature_isset(
5855                             &rdev->wiphy,
5856                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5857                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5858                         return false;
5859                 return true;
5860         case NL80211_CMD_START_AP:
5861                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5862                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5863                     auth_type == NL80211_AUTHTYPE_SAE)
5864                         return false;
5865                 /* FILS not supported yet */
5866                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5867                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5868                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5869                         return false;
5870                 return true;
5871         default:
5872                 return false;
5873         }
5874 }
5875
5876 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5877                                     unsigned int link_id)
5878 {
5879         struct wiphy *wiphy = wdev->wiphy;
5880         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5881         struct sk_buff *msg;
5882         void *hdr;
5883
5884         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5885         if (!msg)
5886                 return;
5887
5888         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5889         if (!hdr)
5890                 goto out;
5891
5892         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5893             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5894             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5895                               NL80211_ATTR_PAD) ||
5896             (wdev->u.ap.ssid_len &&
5897              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5898                      wdev->u.ap.ssid)) ||
5899             (wdev->valid_links &&
5900              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5901                 goto out;
5902
5903         genlmsg_end(msg, hdr);
5904
5905         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5906                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5907         return;
5908 out:
5909         nlmsg_free(msg);
5910 }
5911
5912 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
5913 {
5914         struct ieee80211_channel *channel = params->chandef.chan;
5915
5916         if ((params->he_cap ||  params->he_oper) &&
5917             (channel->flags & IEEE80211_CHAN_NO_HE))
5918                 return -EOPNOTSUPP;
5919
5920         if ((params->eht_cap || params->eht_oper) &&
5921             (channel->flags & IEEE80211_CHAN_NO_EHT))
5922                 return -EOPNOTSUPP;
5923
5924         return 0;
5925 }
5926
5927 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5928 {
5929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5930         unsigned int link_id = nl80211_link_id(info->attrs);
5931         struct net_device *dev = info->user_ptr[1];
5932         struct wireless_dev *wdev = dev->ieee80211_ptr;
5933         struct cfg80211_ap_settings *params;
5934         int err;
5935
5936         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5937             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5938                 return -EOPNOTSUPP;
5939
5940         if (!rdev->ops->start_ap)
5941                 return -EOPNOTSUPP;
5942
5943         if (wdev->links[link_id].ap.beacon_interval)
5944                 return -EALREADY;
5945
5946         /* these are required for START_AP */
5947         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5948             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5949             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5950                 return -EINVAL;
5951
5952         params = kzalloc(sizeof(*params), GFP_KERNEL);
5953         if (!params)
5954                 return -ENOMEM;
5955
5956         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5957                                    info->extack);
5958         if (err)
5959                 goto out;
5960
5961         params->beacon_interval =
5962                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5963         params->dtim_period =
5964                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5965
5966         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5967                                            params->beacon_interval);
5968         if (err)
5969                 goto out;
5970
5971         /*
5972          * In theory, some of these attributes should be required here
5973          * but since they were not used when the command was originally
5974          * added, keep them optional for old user space programs to let
5975          * them continue to work with drivers that do not need the
5976          * additional information -- drivers must check!
5977          */
5978         if (info->attrs[NL80211_ATTR_SSID]) {
5979                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5980                 params->ssid_len =
5981                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5982                 if (params->ssid_len == 0) {
5983                         err = -EINVAL;
5984                         goto out;
5985                 }
5986
5987                 if (wdev->u.ap.ssid_len &&
5988                     (wdev->u.ap.ssid_len != params->ssid_len ||
5989                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5990                         /* require identical SSID for MLO */
5991                         err = -EINVAL;
5992                         goto out;
5993                 }
5994         } else if (wdev->valid_links) {
5995                 /* require SSID for MLO */
5996                 err = -EINVAL;
5997                 goto out;
5998         }
5999
6000         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
6001                 params->hidden_ssid = nla_get_u32(
6002                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
6003
6004         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6005
6006         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6007                 params->auth_type = nla_get_u32(
6008                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
6009                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
6010                                              NL80211_CMD_START_AP)) {
6011                         err = -EINVAL;
6012                         goto out;
6013                 }
6014         } else
6015                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6016
6017         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6018                                       NL80211_MAX_NR_CIPHER_SUITES);
6019         if (err)
6020                 goto out;
6021
6022         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6023                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6024                         err = -EOPNOTSUPP;
6025                         goto out;
6026                 }
6027                 params->inactivity_timeout = nla_get_u16(
6028                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6029         }
6030
6031         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6032                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6033                         err = -EINVAL;
6034                         goto out;
6035                 }
6036                 params->p2p_ctwindow =
6037                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6038                 if (params->p2p_ctwindow != 0 &&
6039                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6040                         err = -EINVAL;
6041                         goto out;
6042                 }
6043         }
6044
6045         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6046                 u8 tmp;
6047
6048                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6049                         err = -EINVAL;
6050                         goto out;
6051                 }
6052                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6053                 params->p2p_opp_ps = tmp;
6054                 if (params->p2p_opp_ps != 0 &&
6055                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6056                         err = -EINVAL;
6057                         goto out;
6058                 }
6059         }
6060
6061         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6062                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6063                 if (err)
6064                         goto out;
6065         } else if (wdev->valid_links) {
6066                 /* with MLD need to specify the channel configuration */
6067                 err = -EINVAL;
6068                 goto out;
6069         } else if (wdev->u.ap.preset_chandef.chan) {
6070                 params->chandef = wdev->u.ap.preset_chandef;
6071         } else if (!nl80211_get_ap_channel(rdev, params)) {
6072                 err = -EINVAL;
6073                 goto out;
6074         }
6075
6076         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6077                 err = nl80211_parse_punct_bitmap(rdev, info,
6078                                                  &params->chandef,
6079                                                  &params->punct_bitmap);
6080                 if (err)
6081                         goto out;
6082         }
6083
6084         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6085                                            wdev->iftype)) {
6086                 err = -EINVAL;
6087                 goto out;
6088         }
6089
6090         wdev_lock(wdev);
6091
6092         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6093                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6094                                                     NL80211_ATTR_TX_RATES,
6095                                                     &params->beacon_rate,
6096                                                     dev, false, link_id);
6097                 if (err)
6098                         goto out_unlock;
6099
6100                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6101                                               &params->beacon_rate);
6102                 if (err)
6103                         goto out_unlock;
6104         }
6105
6106         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6107                 params->smps_mode =
6108                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6109                 switch (params->smps_mode) {
6110                 case NL80211_SMPS_OFF:
6111                         break;
6112                 case NL80211_SMPS_STATIC:
6113                         if (!(rdev->wiphy.features &
6114                               NL80211_FEATURE_STATIC_SMPS)) {
6115                                 err = -EINVAL;
6116                                 goto out_unlock;
6117                         }
6118                         break;
6119                 case NL80211_SMPS_DYNAMIC:
6120                         if (!(rdev->wiphy.features &
6121                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6122                                 err = -EINVAL;
6123                                 goto out_unlock;
6124                         }
6125                         break;
6126                 default:
6127                         err = -EINVAL;
6128                         goto out_unlock;
6129                 }
6130         } else {
6131                 params->smps_mode = NL80211_SMPS_OFF;
6132         }
6133
6134         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6135         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6136                 err = -EOPNOTSUPP;
6137                 goto out_unlock;
6138         }
6139
6140         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6141                 params->acl = parse_acl_data(&rdev->wiphy, info);
6142                 if (IS_ERR(params->acl)) {
6143                         err = PTR_ERR(params->acl);
6144                         params->acl = NULL;
6145                         goto out_unlock;
6146                 }
6147         }
6148
6149         params->twt_responder =
6150                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6151
6152         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6153                 err = nl80211_parse_he_obss_pd(
6154                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6155                                         &params->he_obss_pd);
6156                 if (err)
6157                         goto out_unlock;
6158         }
6159
6160         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6161                 err = nl80211_parse_fils_discovery(rdev,
6162                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6163                                                    params);
6164                 if (err)
6165                         goto out_unlock;
6166         }
6167
6168         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6169                 err = nl80211_parse_unsol_bcast_probe_resp(
6170                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6171                         params);
6172                 if (err)
6173                         goto out_unlock;
6174         }
6175
6176         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6177                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6178                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6179                                                   &params->mbssid_config,
6180                                                   params->beacon.mbssid_ies ?
6181                                                         params->beacon.mbssid_ies->cnt :
6182                                                         0);
6183                 if (err)
6184                         goto out_unlock;
6185         }
6186
6187         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6188                 err = -EINVAL;
6189                 goto out_unlock;
6190         }
6191
6192         err = nl80211_calculate_ap_params(params);
6193         if (err)
6194                 goto out_unlock;
6195
6196         err = nl80211_validate_ap_phy_operation(params);
6197         if (err)
6198                 goto out_unlock;
6199
6200         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6201                 params->flags = nla_get_u32(
6202                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6203         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6204                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6205
6206         if (wdev->conn_owner_nlportid &&
6207             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6208             wdev->conn_owner_nlportid != info->snd_portid) {
6209                 err = -EINVAL;
6210                 goto out_unlock;
6211         }
6212
6213         /* FIXME: validate MLO/link-id against driver capabilities */
6214
6215         err = rdev_start_ap(rdev, dev, params);
6216         if (!err) {
6217                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6218                 wdev->links[link_id].ap.chandef = params->chandef;
6219                 wdev->u.ap.ssid_len = params->ssid_len;
6220                 memcpy(wdev->u.ap.ssid, params->ssid,
6221                        params->ssid_len);
6222
6223                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6224                         wdev->conn_owner_nlportid = info->snd_portid;
6225
6226                 nl80211_send_ap_started(wdev, link_id);
6227         }
6228 out_unlock:
6229         wdev_unlock(wdev);
6230 out:
6231         kfree(params->acl);
6232         kfree(params->beacon.mbssid_ies);
6233         if (params->mbssid_config.tx_wdev &&
6234             params->mbssid_config.tx_wdev->netdev &&
6235             params->mbssid_config.tx_wdev->netdev != dev)
6236                 dev_put(params->mbssid_config.tx_wdev->netdev);
6237         kfree(params->beacon.rnr_ies);
6238         kfree(params);
6239
6240         return err;
6241 }
6242
6243 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6244 {
6245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6246         unsigned int link_id = nl80211_link_id(info->attrs);
6247         struct net_device *dev = info->user_ptr[1];
6248         struct wireless_dev *wdev = dev->ieee80211_ptr;
6249         struct cfg80211_beacon_data params;
6250         int err;
6251
6252         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6253             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6254                 return -EOPNOTSUPP;
6255
6256         if (!rdev->ops->change_beacon)
6257                 return -EOPNOTSUPP;
6258
6259         if (!wdev->links[link_id].ap.beacon_interval)
6260                 return -EINVAL;
6261
6262         err = nl80211_parse_beacon(rdev, info->attrs, &params, info->extack);
6263         if (err)
6264                 goto out;
6265
6266         wdev_lock(wdev);
6267         err = rdev_change_beacon(rdev, dev, &params);
6268         wdev_unlock(wdev);
6269
6270 out:
6271         kfree(params.mbssid_ies);
6272         kfree(params.rnr_ies);
6273         return err;
6274 }
6275
6276 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6277 {
6278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6279         unsigned int link_id = nl80211_link_id(info->attrs);
6280         struct net_device *dev = info->user_ptr[1];
6281
6282         return cfg80211_stop_ap(rdev, dev, link_id, false);
6283 }
6284
6285 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6286         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6287         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6288         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6289         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6290         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6291         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6292 };
6293
6294 static int parse_station_flags(struct genl_info *info,
6295                                enum nl80211_iftype iftype,
6296                                struct station_parameters *params)
6297 {
6298         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6299         struct nlattr *nla;
6300         int flag;
6301
6302         /*
6303          * Try parsing the new attribute first so userspace
6304          * can specify both for older kernels.
6305          */
6306         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6307         if (nla) {
6308                 struct nl80211_sta_flag_update *sta_flags;
6309
6310                 sta_flags = nla_data(nla);
6311                 params->sta_flags_mask = sta_flags->mask;
6312                 params->sta_flags_set = sta_flags->set;
6313                 params->sta_flags_set &= params->sta_flags_mask;
6314                 if ((params->sta_flags_mask |
6315                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6316                         return -EINVAL;
6317                 return 0;
6318         }
6319
6320         /* if present, parse the old attribute */
6321
6322         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6323         if (!nla)
6324                 return 0;
6325
6326         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6327                 return -EINVAL;
6328
6329         /*
6330          * Only allow certain flags for interface types so that
6331          * other attributes are silently ignored. Remember that
6332          * this is backward compatibility code with old userspace
6333          * and shouldn't be hit in other cases anyway.
6334          */
6335         switch (iftype) {
6336         case NL80211_IFTYPE_AP:
6337         case NL80211_IFTYPE_AP_VLAN:
6338         case NL80211_IFTYPE_P2P_GO:
6339                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6340                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6341                                          BIT(NL80211_STA_FLAG_WME) |
6342                                          BIT(NL80211_STA_FLAG_MFP);
6343                 break;
6344         case NL80211_IFTYPE_P2P_CLIENT:
6345         case NL80211_IFTYPE_STATION:
6346                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6347                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6348                 break;
6349         case NL80211_IFTYPE_MESH_POINT:
6350                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6351                                          BIT(NL80211_STA_FLAG_MFP) |
6352                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6353                 break;
6354         default:
6355                 return -EINVAL;
6356         }
6357
6358         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6359                 if (flags[flag]) {
6360                         params->sta_flags_set |= (1<<flag);
6361
6362                         /* no longer support new API additions in old API */
6363                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6364                                 return -EINVAL;
6365                 }
6366         }
6367
6368         return 0;
6369 }
6370
6371 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6372 {
6373         struct nlattr *rate;
6374         u32 bitrate;
6375         u16 bitrate_compat;
6376         enum nl80211_rate_info rate_flg;
6377
6378         rate = nla_nest_start_noflag(msg, attr);
6379         if (!rate)
6380                 return false;
6381
6382         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6383         bitrate = cfg80211_calculate_bitrate(info);
6384         /* report 16-bit bitrate only if we can */
6385         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6386         if (bitrate > 0 &&
6387             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6388                 return false;
6389         if (bitrate_compat > 0 &&
6390             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6391                 return false;
6392
6393         switch (info->bw) {
6394         case RATE_INFO_BW_1:
6395                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6396                 break;
6397         case RATE_INFO_BW_2:
6398                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6399                 break;
6400         case RATE_INFO_BW_4:
6401                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6402                 break;
6403         case RATE_INFO_BW_5:
6404                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6405                 break;
6406         case RATE_INFO_BW_8:
6407                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6408                 break;
6409         case RATE_INFO_BW_10:
6410                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6411                 break;
6412         case RATE_INFO_BW_16:
6413                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6414                 break;
6415         default:
6416                 WARN_ON(1);
6417                 fallthrough;
6418         case RATE_INFO_BW_20:
6419                 rate_flg = 0;
6420                 break;
6421         case RATE_INFO_BW_40:
6422                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6423                 break;
6424         case RATE_INFO_BW_80:
6425                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6426                 break;
6427         case RATE_INFO_BW_160:
6428                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6429                 break;
6430         case RATE_INFO_BW_HE_RU:
6431                 rate_flg = 0;
6432                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6433                 break;
6434         case RATE_INFO_BW_320:
6435                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6436                 break;
6437         case RATE_INFO_BW_EHT_RU:
6438                 rate_flg = 0;
6439                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6440                 break;
6441         }
6442
6443         if (rate_flg && nla_put_flag(msg, rate_flg))
6444                 return false;
6445
6446         if (info->flags & RATE_INFO_FLAGS_MCS) {
6447                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6448                         return false;
6449                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6450                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6451                         return false;
6452         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6453                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6454                         return false;
6455                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6456                         return false;
6457                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6458                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6459                         return false;
6460         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6461                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6462                         return false;
6463                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6464                         return false;
6465                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6466                         return false;
6467                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6468                         return false;
6469                 if (info->bw == RATE_INFO_BW_HE_RU &&
6470                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6471                                info->he_ru_alloc))
6472                         return false;
6473         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6474                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6475                         return false;
6476                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6477                         return false;
6478                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6479                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6480                         return false;
6481         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6482                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6483                         return false;
6484                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6485                         return false;
6486                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6487                         return false;
6488                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6489                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6490                                info->eht_ru_alloc))
6491                         return false;
6492         }
6493
6494         nla_nest_end(msg, rate);
6495         return true;
6496 }
6497
6498 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6499                                int id)
6500 {
6501         void *attr;
6502         int i = 0;
6503
6504         if (!mask)
6505                 return true;
6506
6507         attr = nla_nest_start_noflag(msg, id);
6508         if (!attr)
6509                 return false;
6510
6511         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6512                 if (!(mask & BIT(i)))
6513                         continue;
6514
6515                 if (nla_put_u8(msg, i, signal[i]))
6516                         return false;
6517         }
6518
6519         nla_nest_end(msg, attr);
6520
6521         return true;
6522 }
6523
6524 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6525                                 u32 seq, int flags,
6526                                 struct cfg80211_registered_device *rdev,
6527                                 struct net_device *dev,
6528                                 const u8 *mac_addr, struct station_info *sinfo)
6529 {
6530         void *hdr;
6531         struct nlattr *sinfoattr, *bss_param;
6532
6533         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6534         if (!hdr) {
6535                 cfg80211_sinfo_release_content(sinfo);
6536                 return -1;
6537         }
6538
6539         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6540             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6541             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6542                 goto nla_put_failure;
6543
6544         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6545         if (!sinfoattr)
6546                 goto nla_put_failure;
6547
6548 #define PUT_SINFO(attr, memb, type) do {                                \
6549         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6550         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6551             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6552                              sinfo->memb))                              \
6553                 goto nla_put_failure;                                   \
6554         } while (0)
6555 #define PUT_SINFO_U64(attr, memb) do {                                  \
6556         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6557             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6558                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6559                 goto nla_put_failure;                                   \
6560         } while (0)
6561
6562         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6563         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6564         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6565
6566         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6567                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6568             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6569                         (u32)sinfo->rx_bytes))
6570                 goto nla_put_failure;
6571
6572         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6573                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6574             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6575                         (u32)sinfo->tx_bytes))
6576                 goto nla_put_failure;
6577
6578         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6579         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6580         PUT_SINFO(LLID, llid, u16);
6581         PUT_SINFO(PLID, plid, u16);
6582         PUT_SINFO(PLINK_STATE, plink_state, u8);
6583         PUT_SINFO_U64(RX_DURATION, rx_duration);
6584         PUT_SINFO_U64(TX_DURATION, tx_duration);
6585
6586         if (wiphy_ext_feature_isset(&rdev->wiphy,
6587                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6588                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6589
6590         switch (rdev->wiphy.signal_type) {
6591         case CFG80211_SIGNAL_TYPE_MBM:
6592                 PUT_SINFO(SIGNAL, signal, u8);
6593                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6594                 break;
6595         default:
6596                 break;
6597         }
6598         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6599                 if (!nl80211_put_signal(msg, sinfo->chains,
6600                                         sinfo->chain_signal,
6601                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6602                         goto nla_put_failure;
6603         }
6604         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6605                 if (!nl80211_put_signal(msg, sinfo->chains,
6606                                         sinfo->chain_signal_avg,
6607                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6608                         goto nla_put_failure;
6609         }
6610         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6611                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6612                                           NL80211_STA_INFO_TX_BITRATE))
6613                         goto nla_put_failure;
6614         }
6615         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6616                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6617                                           NL80211_STA_INFO_RX_BITRATE))
6618                         goto nla_put_failure;
6619         }
6620
6621         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6622         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6623         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6624         PUT_SINFO(TX_FAILED, tx_failed, u32);
6625         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6626         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6627         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6628         PUT_SINFO(LOCAL_PM, local_pm, u32);
6629         PUT_SINFO(PEER_PM, peer_pm, u32);
6630         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6631         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6632         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6633
6634         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6635                 bss_param = nla_nest_start_noflag(msg,
6636                                                   NL80211_STA_INFO_BSS_PARAM);
6637                 if (!bss_param)
6638                         goto nla_put_failure;
6639
6640                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6641                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6642                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6643                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6644                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6645                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6646                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6647                                sinfo->bss_param.dtim_period) ||
6648                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6649                                 sinfo->bss_param.beacon_interval))
6650                         goto nla_put_failure;
6651
6652                 nla_nest_end(msg, bss_param);
6653         }
6654         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6655             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6656                     sizeof(struct nl80211_sta_flag_update),
6657                     &sinfo->sta_flags))
6658                 goto nla_put_failure;
6659
6660         PUT_SINFO_U64(T_OFFSET, t_offset);
6661         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6662         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6663         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6664         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6665         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6666         if (wiphy_ext_feature_isset(&rdev->wiphy,
6667                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6668                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6669                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6670         }
6671
6672 #undef PUT_SINFO
6673 #undef PUT_SINFO_U64
6674
6675         if (sinfo->pertid) {
6676                 struct nlattr *tidsattr;
6677                 int tid;
6678
6679                 tidsattr = nla_nest_start_noflag(msg,
6680                                                  NL80211_STA_INFO_TID_STATS);
6681                 if (!tidsattr)
6682                         goto nla_put_failure;
6683
6684                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6685                         struct cfg80211_tid_stats *tidstats;
6686                         struct nlattr *tidattr;
6687
6688                         tidstats = &sinfo->pertid[tid];
6689
6690                         if (!tidstats->filled)
6691                                 continue;
6692
6693                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6694                         if (!tidattr)
6695                                 goto nla_put_failure;
6696
6697 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6698         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6699             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6700                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6701                 goto nla_put_failure;                                   \
6702         } while (0)
6703
6704                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6705                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6706                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6707                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6708
6709 #undef PUT_TIDVAL_U64
6710                         if ((tidstats->filled &
6711                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6712                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6713                                                    NL80211_TID_STATS_TXQ_STATS))
6714                                 goto nla_put_failure;
6715
6716                         nla_nest_end(msg, tidattr);
6717                 }
6718
6719                 nla_nest_end(msg, tidsattr);
6720         }
6721
6722         nla_nest_end(msg, sinfoattr);
6723
6724         if (sinfo->assoc_req_ies_len &&
6725             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6726                     sinfo->assoc_req_ies))
6727                 goto nla_put_failure;
6728
6729         if (sinfo->assoc_resp_ies_len &&
6730             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6731                     sinfo->assoc_resp_ies))
6732                 goto nla_put_failure;
6733
6734         if (sinfo->mlo_params_valid) {
6735                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6736                                sinfo->assoc_link_id))
6737                         goto nla_put_failure;
6738
6739                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6740                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6741                             sinfo->mld_addr))
6742                         goto nla_put_failure;
6743         }
6744
6745         cfg80211_sinfo_release_content(sinfo);
6746         genlmsg_end(msg, hdr);
6747         return 0;
6748
6749  nla_put_failure:
6750         cfg80211_sinfo_release_content(sinfo);
6751         genlmsg_cancel(msg, hdr);
6752         return -EMSGSIZE;
6753 }
6754
6755 static int nl80211_dump_station(struct sk_buff *skb,
6756                                 struct netlink_callback *cb)
6757 {
6758         struct station_info sinfo;
6759         struct cfg80211_registered_device *rdev;
6760         struct wireless_dev *wdev;
6761         u8 mac_addr[ETH_ALEN];
6762         int sta_idx = cb->args[2];
6763         int err;
6764
6765         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6766         if (err)
6767                 return err;
6768         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6769         __acquire(&rdev->wiphy.mtx);
6770
6771         if (!wdev->netdev) {
6772                 err = -EINVAL;
6773                 goto out_err;
6774         }
6775
6776         if (!rdev->ops->dump_station) {
6777                 err = -EOPNOTSUPP;
6778                 goto out_err;
6779         }
6780
6781         while (1) {
6782                 memset(&sinfo, 0, sizeof(sinfo));
6783                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6784                                         mac_addr, &sinfo);
6785                 if (err == -ENOENT)
6786                         break;
6787                 if (err)
6788                         goto out_err;
6789
6790                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6791                                 NETLINK_CB(cb->skb).portid,
6792                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6793                                 rdev, wdev->netdev, mac_addr,
6794                                 &sinfo) < 0)
6795                         goto out;
6796
6797                 sta_idx++;
6798         }
6799
6800  out:
6801         cb->args[2] = sta_idx;
6802         err = skb->len;
6803  out_err:
6804         wiphy_unlock(&rdev->wiphy);
6805
6806         return err;
6807 }
6808
6809 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6810 {
6811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6812         struct net_device *dev = info->user_ptr[1];
6813         struct station_info sinfo;
6814         struct sk_buff *msg;
6815         u8 *mac_addr = NULL;
6816         int err;
6817
6818         memset(&sinfo, 0, sizeof(sinfo));
6819
6820         if (!info->attrs[NL80211_ATTR_MAC])
6821                 return -EINVAL;
6822
6823         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6824
6825         if (!rdev->ops->get_station)
6826                 return -EOPNOTSUPP;
6827
6828         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6829         if (err)
6830                 return err;
6831
6832         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6833         if (!msg) {
6834                 cfg80211_sinfo_release_content(&sinfo);
6835                 return -ENOMEM;
6836         }
6837
6838         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6839                                  info->snd_portid, info->snd_seq, 0,
6840                                  rdev, dev, mac_addr, &sinfo) < 0) {
6841                 nlmsg_free(msg);
6842                 return -ENOBUFS;
6843         }
6844
6845         return genlmsg_reply(msg, info);
6846 }
6847
6848 int cfg80211_check_station_change(struct wiphy *wiphy,
6849                                   struct station_parameters *params,
6850                                   enum cfg80211_station_type statype)
6851 {
6852         if (params->listen_interval != -1 &&
6853             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6854                 return -EINVAL;
6855
6856         if (params->support_p2p_ps != -1 &&
6857             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6858                 return -EINVAL;
6859
6860         if (params->aid &&
6861             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6862             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6863                 return -EINVAL;
6864
6865         /* When you run into this, adjust the code below for the new flag */
6866         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6867
6868         switch (statype) {
6869         case CFG80211_STA_MESH_PEER_KERNEL:
6870         case CFG80211_STA_MESH_PEER_USER:
6871                 /*
6872                  * No ignoring the TDLS flag here -- the userspace mesh
6873                  * code doesn't have the bug of including TDLS in the
6874                  * mask everywhere.
6875                  */
6876                 if (params->sta_flags_mask &
6877                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6878                                   BIT(NL80211_STA_FLAG_MFP) |
6879                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6880                         return -EINVAL;
6881                 break;
6882         case CFG80211_STA_TDLS_PEER_SETUP:
6883         case CFG80211_STA_TDLS_PEER_ACTIVE:
6884                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6885                         return -EINVAL;
6886                 /* ignore since it can't change */
6887                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6888                 break;
6889         default:
6890                 /* disallow mesh-specific things */
6891                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6892                         return -EINVAL;
6893                 if (params->local_pm)
6894                         return -EINVAL;
6895                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6896                         return -EINVAL;
6897         }
6898
6899         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6900             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6901                 /* TDLS can't be set, ... */
6902                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6903                         return -EINVAL;
6904                 /*
6905                  * ... but don't bother the driver with it. This works around
6906                  * a hostapd/wpa_supplicant issue -- it always includes the
6907                  * TLDS_PEER flag in the mask even for AP mode.
6908                  */
6909                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6910         }
6911
6912         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6913             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6914                 /* reject other things that can't change */
6915                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6916                         return -EINVAL;
6917                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6918                         return -EINVAL;
6919                 if (params->link_sta_params.supported_rates)
6920                         return -EINVAL;
6921                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6922                     params->link_sta_params.vht_capa ||
6923                     params->link_sta_params.he_capa ||
6924                     params->link_sta_params.eht_capa)
6925                         return -EINVAL;
6926         }
6927
6928         if (statype != CFG80211_STA_AP_CLIENT &&
6929             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6930                 if (params->vlan)
6931                         return -EINVAL;
6932         }
6933
6934         switch (statype) {
6935         case CFG80211_STA_AP_MLME_CLIENT:
6936                 /* Use this only for authorizing/unauthorizing a station */
6937                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6938                         return -EOPNOTSUPP;
6939                 break;
6940         case CFG80211_STA_AP_CLIENT:
6941         case CFG80211_STA_AP_CLIENT_UNASSOC:
6942                 /* accept only the listed bits */
6943                 if (params->sta_flags_mask &
6944                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6945                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6946                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6947                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6948                                   BIT(NL80211_STA_FLAG_WME) |
6949                                   BIT(NL80211_STA_FLAG_MFP)))
6950                         return -EINVAL;
6951
6952                 /* but authenticated/associated only if driver handles it */
6953                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6954                     params->sta_flags_mask &
6955                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6956                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6957                         return -EINVAL;
6958                 break;
6959         case CFG80211_STA_IBSS:
6960         case CFG80211_STA_AP_STA:
6961                 /* reject any changes other than AUTHORIZED */
6962                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6963                         return -EINVAL;
6964                 break;
6965         case CFG80211_STA_TDLS_PEER_SETUP:
6966                 /* reject any changes other than AUTHORIZED or WME */
6967                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6968                                                BIT(NL80211_STA_FLAG_WME)))
6969                         return -EINVAL;
6970                 /* force (at least) rates when authorizing */
6971                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6972                     !params->link_sta_params.supported_rates)
6973                         return -EINVAL;
6974                 break;
6975         case CFG80211_STA_TDLS_PEER_ACTIVE:
6976                 /* reject any changes */
6977                 return -EINVAL;
6978         case CFG80211_STA_MESH_PEER_KERNEL:
6979                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6980                         return -EINVAL;
6981                 break;
6982         case CFG80211_STA_MESH_PEER_USER:
6983                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6984                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6985                         return -EINVAL;
6986                 break;
6987         }
6988
6989         /*
6990          * Older kernel versions ignored this attribute entirely, so don't
6991          * reject attempts to update it but mark it as unused instead so the
6992          * driver won't look at the data.
6993          */
6994         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6995             statype != CFG80211_STA_TDLS_PEER_SETUP)
6996                 params->link_sta_params.opmode_notif_used = false;
6997
6998         return 0;
6999 }
7000 EXPORT_SYMBOL(cfg80211_check_station_change);
7001
7002 /*
7003  * Get vlan interface making sure it is running and on the right wiphy.
7004  */
7005 static struct net_device *get_vlan(struct genl_info *info,
7006                                    struct cfg80211_registered_device *rdev)
7007 {
7008         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
7009         struct net_device *v;
7010         int ret;
7011
7012         if (!vlanattr)
7013                 return NULL;
7014
7015         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
7016         if (!v)
7017                 return ERR_PTR(-ENODEV);
7018
7019         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7020                 ret = -EINVAL;
7021                 goto error;
7022         }
7023
7024         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7025             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7026             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7027                 ret = -EINVAL;
7028                 goto error;
7029         }
7030
7031         if (!netif_running(v)) {
7032                 ret = -ENETDOWN;
7033                 goto error;
7034         }
7035
7036         return v;
7037  error:
7038         dev_put(v);
7039         return ERR_PTR(ret);
7040 }
7041
7042 static int nl80211_parse_sta_wme(struct genl_info *info,
7043                                  struct station_parameters *params)
7044 {
7045         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7046         struct nlattr *nla;
7047         int err;
7048
7049         /* parse WME attributes if present */
7050         if (!info->attrs[NL80211_ATTR_STA_WME])
7051                 return 0;
7052
7053         nla = info->attrs[NL80211_ATTR_STA_WME];
7054         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7055                                           nl80211_sta_wme_policy,
7056                                           info->extack);
7057         if (err)
7058                 return err;
7059
7060         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7061                 params->uapsd_queues = nla_get_u8(
7062                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7063         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7064                 return -EINVAL;
7065
7066         if (tb[NL80211_STA_WME_MAX_SP])
7067                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7068
7069         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7070                 return -EINVAL;
7071
7072         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7073
7074         return 0;
7075 }
7076
7077 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7078                                       struct station_parameters *params)
7079 {
7080         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7081                 params->supported_channels =
7082                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7083                 params->supported_channels_len =
7084                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7085                 /*
7086                  * Need to include at least one (first channel, number of
7087                  * channels) tuple for each subband (checked in policy),
7088                  * and must have proper tuples for the rest of the data as well.
7089                  */
7090                 if (params->supported_channels_len % 2)
7091                         return -EINVAL;
7092         }
7093
7094         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7095                 params->supported_oper_classes =
7096                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7097                 params->supported_oper_classes_len =
7098                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7099         }
7100         return 0;
7101 }
7102
7103 static int nl80211_set_station_tdls(struct genl_info *info,
7104                                     struct station_parameters *params)
7105 {
7106         int err;
7107         /* Dummy STA entry gets updated once the peer capabilities are known */
7108         if (info->attrs[NL80211_ATTR_PEER_AID])
7109                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7110         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7111                 params->link_sta_params.ht_capa =
7112                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7113         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7114                 params->link_sta_params.vht_capa =
7115                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7116         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7117                 params->link_sta_params.he_capa =
7118                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7119                 params->link_sta_params.he_capa_len =
7120                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7121
7122                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7123                         params->link_sta_params.eht_capa =
7124                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7125                         params->link_sta_params.eht_capa_len =
7126                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7127
7128                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7129                                                         (const u8 *)params->link_sta_params.eht_capa,
7130                                                         params->link_sta_params.eht_capa_len,
7131                                                         false))
7132                                 return -EINVAL;
7133                 }
7134         }
7135
7136         err = nl80211_parse_sta_channel_info(info, params);
7137         if (err)
7138                 return err;
7139
7140         return nl80211_parse_sta_wme(info, params);
7141 }
7142
7143 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7144                                              struct sta_txpwr *txpwr,
7145                                              bool *txpwr_set)
7146 {
7147         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7148         int idx;
7149
7150         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7151                 if (!rdev->ops->set_tx_power ||
7152                     !wiphy_ext_feature_isset(&rdev->wiphy,
7153                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7154                         return -EOPNOTSUPP;
7155
7156                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7157                 txpwr->type = nla_get_u8(info->attrs[idx]);
7158
7159                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7160                         idx = NL80211_ATTR_STA_TX_POWER;
7161
7162                         if (info->attrs[idx])
7163                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7164                         else
7165                                 return -EINVAL;
7166                 }
7167
7168                 *txpwr_set = true;
7169         } else {
7170                 *txpwr_set = false;
7171         }
7172
7173         return 0;
7174 }
7175
7176 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7177 {
7178         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7179         struct net_device *dev = info->user_ptr[1];
7180         struct station_parameters params;
7181         u8 *mac_addr;
7182         int err;
7183
7184         memset(&params, 0, sizeof(params));
7185
7186         if (!rdev->ops->change_station)
7187                 return -EOPNOTSUPP;
7188
7189         /*
7190          * AID and listen_interval properties can be set only for unassociated
7191          * station. Include these parameters here and will check them in
7192          * cfg80211_check_station_change().
7193          */
7194         if (info->attrs[NL80211_ATTR_STA_AID])
7195                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7196
7197         if (info->attrs[NL80211_ATTR_VLAN_ID])
7198                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7199
7200         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7201                 params.listen_interval =
7202                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7203         else
7204                 params.listen_interval = -1;
7205
7206         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7207                 params.support_p2p_ps =
7208                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7209         else
7210                 params.support_p2p_ps = -1;
7211
7212         if (!info->attrs[NL80211_ATTR_MAC])
7213                 return -EINVAL;
7214
7215         params.link_sta_params.link_id =
7216                 nl80211_link_id_or_invalid(info->attrs);
7217
7218         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7219                 /* If MLD_ADDR attribute is set then this is an MLD station
7220                  * and the MLD_ADDR attribute holds the MLD address and the
7221                  * MAC attribute holds for the LINK address.
7222                  * In that case, the link_id is also expected to be valid.
7223                  */
7224                 if (params.link_sta_params.link_id < 0)
7225                         return -EINVAL;
7226
7227                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7228                 params.link_sta_params.mld_mac = mac_addr;
7229                 params.link_sta_params.link_mac =
7230                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7231                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7232                         return -EINVAL;
7233         } else {
7234                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7235         }
7236
7237
7238         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7239                 params.link_sta_params.supported_rates =
7240                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7241                 params.link_sta_params.supported_rates_len =
7242                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7243         }
7244
7245         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7246                 params.capability =
7247                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7248                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7249         }
7250
7251         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7252                 params.ext_capab =
7253                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7254                 params.ext_capab_len =
7255                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7256         }
7257
7258         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7259                 return -EINVAL;
7260
7261         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7262                 params.plink_action =
7263                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7264
7265         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7266                 params.plink_state =
7267                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7268                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7269                         params.peer_aid = nla_get_u16(
7270                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7271                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7272         }
7273
7274         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7275                 params.local_pm = nla_get_u32(
7276                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7277
7278         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7279                 params.link_sta_params.opmode_notif_used = true;
7280                 params.link_sta_params.opmode_notif =
7281                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7282         }
7283
7284         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7285                 params.link_sta_params.he_6ghz_capa =
7286                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7287
7288         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7289                 params.airtime_weight =
7290                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7291
7292         if (params.airtime_weight &&
7293             !wiphy_ext_feature_isset(&rdev->wiphy,
7294                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7295                 return -EOPNOTSUPP;
7296
7297         err = nl80211_parse_sta_txpower_setting(info,
7298                                                 &params.link_sta_params.txpwr,
7299                                                 &params.link_sta_params.txpwr_set);
7300         if (err)
7301                 return err;
7302
7303         /* Include parameters for TDLS peer (will check later) */
7304         err = nl80211_set_station_tdls(info, &params);
7305         if (err)
7306                 return err;
7307
7308         params.vlan = get_vlan(info, rdev);
7309         if (IS_ERR(params.vlan))
7310                 return PTR_ERR(params.vlan);
7311
7312         switch (dev->ieee80211_ptr->iftype) {
7313         case NL80211_IFTYPE_AP:
7314         case NL80211_IFTYPE_AP_VLAN:
7315         case NL80211_IFTYPE_P2P_GO:
7316         case NL80211_IFTYPE_P2P_CLIENT:
7317         case NL80211_IFTYPE_STATION:
7318         case NL80211_IFTYPE_ADHOC:
7319         case NL80211_IFTYPE_MESH_POINT:
7320                 break;
7321         default:
7322                 err = -EOPNOTSUPP;
7323                 goto out_put_vlan;
7324         }
7325
7326         /* driver will call cfg80211_check_station_change() */
7327         wdev_lock(dev->ieee80211_ptr);
7328         err = rdev_change_station(rdev, dev, mac_addr, &params);
7329         wdev_unlock(dev->ieee80211_ptr);
7330
7331  out_put_vlan:
7332         dev_put(params.vlan);
7333
7334         return err;
7335 }
7336
7337 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7338 {
7339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7340         int err;
7341         struct net_device *dev = info->user_ptr[1];
7342         struct wireless_dev *wdev = dev->ieee80211_ptr;
7343         struct station_parameters params;
7344         u8 *mac_addr = NULL;
7345         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7346                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7347
7348         memset(&params, 0, sizeof(params));
7349
7350         if (!rdev->ops->add_station)
7351                 return -EOPNOTSUPP;
7352
7353         if (!info->attrs[NL80211_ATTR_MAC])
7354                 return -EINVAL;
7355
7356         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7357                 return -EINVAL;
7358
7359         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7360                 return -EINVAL;
7361
7362         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7363             !info->attrs[NL80211_ATTR_PEER_AID])
7364                 return -EINVAL;
7365
7366         params.link_sta_params.link_id =
7367                 nl80211_link_id_or_invalid(info->attrs);
7368
7369         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7370                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7371                 params.link_sta_params.mld_mac = mac_addr;
7372                 params.link_sta_params.link_mac =
7373                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7374                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7375                         return -EINVAL;
7376         } else {
7377                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7378         }
7379
7380         params.link_sta_params.supported_rates =
7381                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7382         params.link_sta_params.supported_rates_len =
7383                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7384         params.listen_interval =
7385                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7386
7387         if (info->attrs[NL80211_ATTR_VLAN_ID])
7388                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7389
7390         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7391                 params.support_p2p_ps =
7392                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7393         } else {
7394                 /*
7395                  * if not specified, assume it's supported for P2P GO interface,
7396                  * and is NOT supported for AP interface
7397                  */
7398                 params.support_p2p_ps =
7399                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7400         }
7401
7402         if (info->attrs[NL80211_ATTR_PEER_AID])
7403                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7404         else
7405                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7406
7407         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7408                 params.capability =
7409                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7410                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7411         }
7412
7413         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7414                 params.ext_capab =
7415                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7416                 params.ext_capab_len =
7417                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7418         }
7419
7420         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7421                 params.link_sta_params.ht_capa =
7422                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7423
7424         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7425                 params.link_sta_params.vht_capa =
7426                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7427
7428         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7429                 params.link_sta_params.he_capa =
7430                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7431                 params.link_sta_params.he_capa_len =
7432                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7433
7434                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7435                         params.link_sta_params.eht_capa =
7436                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7437                         params.link_sta_params.eht_capa_len =
7438                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7439
7440                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7441                                                         (const u8 *)params.link_sta_params.eht_capa,
7442                                                         params.link_sta_params.eht_capa_len,
7443                                                         false))
7444                                 return -EINVAL;
7445                 }
7446         }
7447
7448         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7449                 params.link_sta_params.he_6ghz_capa =
7450                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7451
7452         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7453                 params.link_sta_params.opmode_notif_used = true;
7454                 params.link_sta_params.opmode_notif =
7455                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7456         }
7457
7458         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7459                 params.plink_action =
7460                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7461
7462         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7463                 params.airtime_weight =
7464                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7465
7466         if (params.airtime_weight &&
7467             !wiphy_ext_feature_isset(&rdev->wiphy,
7468                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7469                 return -EOPNOTSUPP;
7470
7471         err = nl80211_parse_sta_txpower_setting(info,
7472                                                 &params.link_sta_params.txpwr,
7473                                                 &params.link_sta_params.txpwr_set);
7474         if (err)
7475                 return err;
7476
7477         err = nl80211_parse_sta_channel_info(info, &params);
7478         if (err)
7479                 return err;
7480
7481         err = nl80211_parse_sta_wme(info, &params);
7482         if (err)
7483                 return err;
7484
7485         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7486                 return -EINVAL;
7487
7488         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7489          * as userspace might just pass through the capabilities from the IEs
7490          * directly, rather than enforcing this restriction and returning an
7491          * error in this case.
7492          */
7493         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7494                 params.link_sta_params.ht_capa = NULL;
7495                 params.link_sta_params.vht_capa = NULL;
7496
7497                 /* HE and EHT require WME */
7498                 if (params.link_sta_params.he_capa_len ||
7499                     params.link_sta_params.he_6ghz_capa ||
7500                     params.link_sta_params.eht_capa_len)
7501                         return -EINVAL;
7502         }
7503
7504         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7505         if (params.link_sta_params.he_6ghz_capa &&
7506             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7507                 return -EINVAL;
7508
7509         /* When you run into this, adjust the code below for the new flag */
7510         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7511
7512         switch (dev->ieee80211_ptr->iftype) {
7513         case NL80211_IFTYPE_AP:
7514         case NL80211_IFTYPE_AP_VLAN:
7515         case NL80211_IFTYPE_P2P_GO:
7516                 /* ignore WME attributes if iface/sta is not capable */
7517                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7518                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7519                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7520
7521                 /* TDLS peers cannot be added */
7522                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7523                     info->attrs[NL80211_ATTR_PEER_AID])
7524                         return -EINVAL;
7525                 /* but don't bother the driver with it */
7526                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7527
7528                 /* allow authenticated/associated only if driver handles it */
7529                 if (!(rdev->wiphy.features &
7530                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7531                     params.sta_flags_mask & auth_assoc)
7532                         return -EINVAL;
7533
7534                 /* Older userspace, or userspace wanting to be compatible with
7535                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7536                  * and assoc flags in the mask, but assumes the station will be
7537                  * added as associated anyway since this was the required driver
7538                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7539                  * introduced.
7540                  * In order to not bother drivers with this quirk in the API
7541                  * set the flags in both the mask and set for new stations in
7542                  * this case.
7543                  */
7544                 if (!(params.sta_flags_mask & auth_assoc)) {
7545                         params.sta_flags_mask |= auth_assoc;
7546                         params.sta_flags_set |= auth_assoc;
7547                 }
7548
7549                 /* must be last in here for error handling */
7550                 params.vlan = get_vlan(info, rdev);
7551                 if (IS_ERR(params.vlan))
7552                         return PTR_ERR(params.vlan);
7553                 break;
7554         case NL80211_IFTYPE_MESH_POINT:
7555                 /* ignore uAPSD data */
7556                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7557
7558                 /* associated is disallowed */
7559                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7560                         return -EINVAL;
7561                 /* TDLS peers cannot be added */
7562                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7563                     info->attrs[NL80211_ATTR_PEER_AID])
7564                         return -EINVAL;
7565                 break;
7566         case NL80211_IFTYPE_STATION:
7567         case NL80211_IFTYPE_P2P_CLIENT:
7568                 /* ignore uAPSD data */
7569                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7570
7571                 /* these are disallowed */
7572                 if (params.sta_flags_mask &
7573                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7574                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7575                         return -EINVAL;
7576                 /* Only TDLS peers can be added */
7577                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7578                         return -EINVAL;
7579                 /* Can only add if TDLS ... */
7580                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7581                         return -EOPNOTSUPP;
7582                 /* ... with external setup is supported */
7583                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7584                         return -EOPNOTSUPP;
7585                 /*
7586                  * Older wpa_supplicant versions always mark the TDLS peer
7587                  * as authorized, but it shouldn't yet be.
7588                  */
7589                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7590                 break;
7591         default:
7592                 return -EOPNOTSUPP;
7593         }
7594
7595         /* be aware of params.vlan when changing code here */
7596
7597         wdev_lock(dev->ieee80211_ptr);
7598         if (wdev->valid_links) {
7599                 if (params.link_sta_params.link_id < 0) {
7600                         err = -EINVAL;
7601                         goto out;
7602                 }
7603                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7604                         err = -ENOLINK;
7605                         goto out;
7606                 }
7607         } else {
7608                 if (params.link_sta_params.link_id >= 0) {
7609                         err = -EINVAL;
7610                         goto out;
7611                 }
7612         }
7613         err = rdev_add_station(rdev, dev, mac_addr, &params);
7614 out:
7615         wdev_unlock(dev->ieee80211_ptr);
7616         dev_put(params.vlan);
7617         return err;
7618 }
7619
7620 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7621 {
7622         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7623         struct net_device *dev = info->user_ptr[1];
7624         struct station_del_parameters params;
7625         int ret;
7626
7627         memset(&params, 0, sizeof(params));
7628
7629         if (info->attrs[NL80211_ATTR_MAC])
7630                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7631
7632         switch (dev->ieee80211_ptr->iftype) {
7633         case NL80211_IFTYPE_AP:
7634         case NL80211_IFTYPE_AP_VLAN:
7635         case NL80211_IFTYPE_MESH_POINT:
7636         case NL80211_IFTYPE_P2P_GO:
7637                 /* always accept these */
7638                 break;
7639         case NL80211_IFTYPE_ADHOC:
7640                 /* conditionally accept */
7641                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7642                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7643                         break;
7644                 return -EINVAL;
7645         default:
7646                 return -EINVAL;
7647         }
7648
7649         if (!rdev->ops->del_station)
7650                 return -EOPNOTSUPP;
7651
7652         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7653                 params.subtype =
7654                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7655                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7656                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7657                         return -EINVAL;
7658         } else {
7659                 /* Default to Deauthentication frame */
7660                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7661         }
7662
7663         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7664                 params.reason_code =
7665                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7666                 if (params.reason_code == 0)
7667                         return -EINVAL; /* 0 is reserved */
7668         } else {
7669                 /* Default to reason code 2 */
7670                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7671         }
7672
7673         wdev_lock(dev->ieee80211_ptr);
7674         ret = rdev_del_station(rdev, dev, &params);
7675         wdev_unlock(dev->ieee80211_ptr);
7676
7677         return ret;
7678 }
7679
7680 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7681                                 int flags, struct net_device *dev,
7682                                 u8 *dst, u8 *next_hop,
7683                                 struct mpath_info *pinfo)
7684 {
7685         void *hdr;
7686         struct nlattr *pinfoattr;
7687
7688         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7689         if (!hdr)
7690                 return -1;
7691
7692         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7693             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7694             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7695             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7696                 goto nla_put_failure;
7697
7698         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7699         if (!pinfoattr)
7700                 goto nla_put_failure;
7701         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7702             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7703                         pinfo->frame_qlen))
7704                 goto nla_put_failure;
7705         if (((pinfo->filled & MPATH_INFO_SN) &&
7706              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7707             ((pinfo->filled & MPATH_INFO_METRIC) &&
7708              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7709                          pinfo->metric)) ||
7710             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7711              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7712                          pinfo->exptime)) ||
7713             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7714              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7715                         pinfo->flags)) ||
7716             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7717              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7718                          pinfo->discovery_timeout)) ||
7719             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7720              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7721                         pinfo->discovery_retries)) ||
7722             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7723              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7724                         pinfo->hop_count)) ||
7725             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7726              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7727                          pinfo->path_change_count)))
7728                 goto nla_put_failure;
7729
7730         nla_nest_end(msg, pinfoattr);
7731
7732         genlmsg_end(msg, hdr);
7733         return 0;
7734
7735  nla_put_failure:
7736         genlmsg_cancel(msg, hdr);
7737         return -EMSGSIZE;
7738 }
7739
7740 static int nl80211_dump_mpath(struct sk_buff *skb,
7741                               struct netlink_callback *cb)
7742 {
7743         struct mpath_info pinfo;
7744         struct cfg80211_registered_device *rdev;
7745         struct wireless_dev *wdev;
7746         u8 dst[ETH_ALEN];
7747         u8 next_hop[ETH_ALEN];
7748         int path_idx = cb->args[2];
7749         int err;
7750
7751         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7752         if (err)
7753                 return err;
7754         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7755         __acquire(&rdev->wiphy.mtx);
7756
7757         if (!rdev->ops->dump_mpath) {
7758                 err = -EOPNOTSUPP;
7759                 goto out_err;
7760         }
7761
7762         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7763                 err = -EOPNOTSUPP;
7764                 goto out_err;
7765         }
7766
7767         while (1) {
7768                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7769                                       next_hop, &pinfo);
7770                 if (err == -ENOENT)
7771                         break;
7772                 if (err)
7773                         goto out_err;
7774
7775                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7776                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7777                                        wdev->netdev, dst, next_hop,
7778                                        &pinfo) < 0)
7779                         goto out;
7780
7781                 path_idx++;
7782         }
7783
7784  out:
7785         cb->args[2] = path_idx;
7786         err = skb->len;
7787  out_err:
7788         wiphy_unlock(&rdev->wiphy);
7789         return err;
7790 }
7791
7792 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7793 {
7794         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7795         int err;
7796         struct net_device *dev = info->user_ptr[1];
7797         struct mpath_info pinfo;
7798         struct sk_buff *msg;
7799         u8 *dst = NULL;
7800         u8 next_hop[ETH_ALEN];
7801
7802         memset(&pinfo, 0, sizeof(pinfo));
7803
7804         if (!info->attrs[NL80211_ATTR_MAC])
7805                 return -EINVAL;
7806
7807         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7808
7809         if (!rdev->ops->get_mpath)
7810                 return -EOPNOTSUPP;
7811
7812         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7813                 return -EOPNOTSUPP;
7814
7815         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7816         if (err)
7817                 return err;
7818
7819         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7820         if (!msg)
7821                 return -ENOMEM;
7822
7823         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7824                                  dev, dst, next_hop, &pinfo) < 0) {
7825                 nlmsg_free(msg);
7826                 return -ENOBUFS;
7827         }
7828
7829         return genlmsg_reply(msg, info);
7830 }
7831
7832 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7833 {
7834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7835         struct net_device *dev = info->user_ptr[1];
7836         u8 *dst = NULL;
7837         u8 *next_hop = NULL;
7838
7839         if (!info->attrs[NL80211_ATTR_MAC])
7840                 return -EINVAL;
7841
7842         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7843                 return -EINVAL;
7844
7845         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7846         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7847
7848         if (!rdev->ops->change_mpath)
7849                 return -EOPNOTSUPP;
7850
7851         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7852                 return -EOPNOTSUPP;
7853
7854         return rdev_change_mpath(rdev, dev, dst, next_hop);
7855 }
7856
7857 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7858 {
7859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7860         struct net_device *dev = info->user_ptr[1];
7861         u8 *dst = NULL;
7862         u8 *next_hop = NULL;
7863
7864         if (!info->attrs[NL80211_ATTR_MAC])
7865                 return -EINVAL;
7866
7867         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7868                 return -EINVAL;
7869
7870         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7871         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7872
7873         if (!rdev->ops->add_mpath)
7874                 return -EOPNOTSUPP;
7875
7876         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7877                 return -EOPNOTSUPP;
7878
7879         return rdev_add_mpath(rdev, dev, dst, next_hop);
7880 }
7881
7882 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7883 {
7884         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7885         struct net_device *dev = info->user_ptr[1];
7886         u8 *dst = NULL;
7887
7888         if (info->attrs[NL80211_ATTR_MAC])
7889                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7890
7891         if (!rdev->ops->del_mpath)
7892                 return -EOPNOTSUPP;
7893
7894         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7895                 return -EOPNOTSUPP;
7896
7897         return rdev_del_mpath(rdev, dev, dst);
7898 }
7899
7900 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7901 {
7902         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7903         int err;
7904         struct net_device *dev = info->user_ptr[1];
7905         struct mpath_info pinfo;
7906         struct sk_buff *msg;
7907         u8 *dst = NULL;
7908         u8 mpp[ETH_ALEN];
7909
7910         memset(&pinfo, 0, sizeof(pinfo));
7911
7912         if (!info->attrs[NL80211_ATTR_MAC])
7913                 return -EINVAL;
7914
7915         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7916
7917         if (!rdev->ops->get_mpp)
7918                 return -EOPNOTSUPP;
7919
7920         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7921                 return -EOPNOTSUPP;
7922
7923         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7924         if (err)
7925                 return err;
7926
7927         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7928         if (!msg)
7929                 return -ENOMEM;
7930
7931         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7932                                dev, dst, mpp, &pinfo) < 0) {
7933                 nlmsg_free(msg);
7934                 return -ENOBUFS;
7935         }
7936
7937         return genlmsg_reply(msg, info);
7938 }
7939
7940 static int nl80211_dump_mpp(struct sk_buff *skb,
7941                             struct netlink_callback *cb)
7942 {
7943         struct mpath_info pinfo;
7944         struct cfg80211_registered_device *rdev;
7945         struct wireless_dev *wdev;
7946         u8 dst[ETH_ALEN];
7947         u8 mpp[ETH_ALEN];
7948         int path_idx = cb->args[2];
7949         int err;
7950
7951         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7952         if (err)
7953                 return err;
7954         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7955         __acquire(&rdev->wiphy.mtx);
7956
7957         if (!rdev->ops->dump_mpp) {
7958                 err = -EOPNOTSUPP;
7959                 goto out_err;
7960         }
7961
7962         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7963                 err = -EOPNOTSUPP;
7964                 goto out_err;
7965         }
7966
7967         while (1) {
7968                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7969                                     mpp, &pinfo);
7970                 if (err == -ENOENT)
7971                         break;
7972                 if (err)
7973                         goto out_err;
7974
7975                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7976                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7977                                        wdev->netdev, dst, mpp,
7978                                        &pinfo) < 0)
7979                         goto out;
7980
7981                 path_idx++;
7982         }
7983
7984  out:
7985         cb->args[2] = path_idx;
7986         err = skb->len;
7987  out_err:
7988         wiphy_unlock(&rdev->wiphy);
7989         return err;
7990 }
7991
7992 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7993 {
7994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7995         struct net_device *dev = info->user_ptr[1];
7996         struct wireless_dev *wdev = dev->ieee80211_ptr;
7997         struct bss_parameters params;
7998         int err;
7999
8000         memset(&params, 0, sizeof(params));
8001         params.link_id = nl80211_link_id_or_invalid(info->attrs);
8002         /* default to not changing parameters */
8003         params.use_cts_prot = -1;
8004         params.use_short_preamble = -1;
8005         params.use_short_slot_time = -1;
8006         params.ap_isolate = -1;
8007         params.ht_opmode = -1;
8008         params.p2p_ctwindow = -1;
8009         params.p2p_opp_ps = -1;
8010
8011         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
8012                 params.use_cts_prot =
8013                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
8014         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
8015                 params.use_short_preamble =
8016                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
8017         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
8018                 params.use_short_slot_time =
8019                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8020         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8021                 params.basic_rates =
8022                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8023                 params.basic_rates_len =
8024                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8025         }
8026         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8027                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8028         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8029                 params.ht_opmode =
8030                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8031
8032         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8033                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8034                         return -EINVAL;
8035                 params.p2p_ctwindow =
8036                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8037                 if (params.p2p_ctwindow != 0 &&
8038                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8039                         return -EINVAL;
8040         }
8041
8042         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8043                 u8 tmp;
8044
8045                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8046                         return -EINVAL;
8047                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8048                 params.p2p_opp_ps = tmp;
8049                 if (params.p2p_opp_ps &&
8050                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8051                         return -EINVAL;
8052         }
8053
8054         if (!rdev->ops->change_bss)
8055                 return -EOPNOTSUPP;
8056
8057         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8058             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8059                 return -EOPNOTSUPP;
8060
8061         wdev_lock(wdev);
8062         err = rdev_change_bss(rdev, dev, &params);
8063         wdev_unlock(wdev);
8064
8065         return err;
8066 }
8067
8068 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8069 {
8070         char *data = NULL;
8071         bool is_indoor;
8072         enum nl80211_user_reg_hint_type user_reg_hint_type;
8073         u32 owner_nlportid;
8074
8075         /*
8076          * You should only get this when cfg80211 hasn't yet initialized
8077          * completely when built-in to the kernel right between the time
8078          * window between nl80211_init() and regulatory_init(), if that is
8079          * even possible.
8080          */
8081         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8082                 return -EINPROGRESS;
8083
8084         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8085                 user_reg_hint_type =
8086                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8087         else
8088                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8089
8090         switch (user_reg_hint_type) {
8091         case NL80211_USER_REG_HINT_USER:
8092         case NL80211_USER_REG_HINT_CELL_BASE:
8093                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8094                         return -EINVAL;
8095
8096                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8097                 return regulatory_hint_user(data, user_reg_hint_type);
8098         case NL80211_USER_REG_HINT_INDOOR:
8099                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8100                         owner_nlportid = info->snd_portid;
8101                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8102                 } else {
8103                         owner_nlportid = 0;
8104                         is_indoor = true;
8105                 }
8106
8107                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8108         default:
8109                 return -EINVAL;
8110         }
8111 }
8112
8113 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8114 {
8115         return reg_reload_regdb();
8116 }
8117
8118 static int nl80211_get_mesh_config(struct sk_buff *skb,
8119                                    struct genl_info *info)
8120 {
8121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8122         struct net_device *dev = info->user_ptr[1];
8123         struct wireless_dev *wdev = dev->ieee80211_ptr;
8124         struct mesh_config cur_params;
8125         int err = 0;
8126         void *hdr;
8127         struct nlattr *pinfoattr;
8128         struct sk_buff *msg;
8129
8130         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8131                 return -EOPNOTSUPP;
8132
8133         if (!rdev->ops->get_mesh_config)
8134                 return -EOPNOTSUPP;
8135
8136         wdev_lock(wdev);
8137         /* If not connected, get default parameters */
8138         if (!wdev->u.mesh.id_len)
8139                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8140         else
8141                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8142         wdev_unlock(wdev);
8143
8144         if (err)
8145                 return err;
8146
8147         /* Draw up a netlink message to send back */
8148         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8149         if (!msg)
8150                 return -ENOMEM;
8151         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8152                              NL80211_CMD_GET_MESH_CONFIG);
8153         if (!hdr)
8154                 goto out;
8155         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8156         if (!pinfoattr)
8157                 goto nla_put_failure;
8158         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8159             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8160                         cur_params.dot11MeshRetryTimeout) ||
8161             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8162                         cur_params.dot11MeshConfirmTimeout) ||
8163             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8164                         cur_params.dot11MeshHoldingTimeout) ||
8165             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8166                         cur_params.dot11MeshMaxPeerLinks) ||
8167             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8168                        cur_params.dot11MeshMaxRetries) ||
8169             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8170                        cur_params.dot11MeshTTL) ||
8171             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8172                        cur_params.element_ttl) ||
8173             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8174                        cur_params.auto_open_plinks) ||
8175             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8176                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8177             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8178                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8179             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8180                         cur_params.path_refresh_time) ||
8181             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8182                         cur_params.min_discovery_timeout) ||
8183             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8184                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8185             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8186                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8187             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8188                         cur_params.dot11MeshHWMPperrMinInterval) ||
8189             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8190                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8191             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8192                        cur_params.dot11MeshHWMPRootMode) ||
8193             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8194                         cur_params.dot11MeshHWMPRannInterval) ||
8195             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8196                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8197             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8198                        cur_params.dot11MeshForwarding) ||
8199             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8200                         cur_params.rssi_threshold) ||
8201             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8202                         cur_params.ht_opmode) ||
8203             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8204                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8205             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8206                         cur_params.dot11MeshHWMProotInterval) ||
8207             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8208                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8209             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8210                         cur_params.power_mode) ||
8211             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8212                         cur_params.dot11MeshAwakeWindowDuration) ||
8213             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8214                         cur_params.plink_timeout) ||
8215             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8216                        cur_params.dot11MeshConnectedToMeshGate) ||
8217             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8218                        cur_params.dot11MeshNolearn) ||
8219             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8220                        cur_params.dot11MeshConnectedToAuthServer))
8221                 goto nla_put_failure;
8222         nla_nest_end(msg, pinfoattr);
8223         genlmsg_end(msg, hdr);
8224         return genlmsg_reply(msg, info);
8225
8226  nla_put_failure:
8227  out:
8228         nlmsg_free(msg);
8229         return -ENOBUFS;
8230 }
8231
8232 static const struct nla_policy
8233 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8234         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8235                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8236         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8237                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8238         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8239                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8240         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8241                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8242         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8243         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8244         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8245         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8246         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8247                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8248         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8249         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8250         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8251         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8252         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8253                 NLA_POLICY_MIN(NLA_U16, 1),
8254         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8255                 NLA_POLICY_MIN(NLA_U16, 1),
8256         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8257                 NLA_POLICY_MIN(NLA_U16, 1),
8258         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8259         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8260                 NLA_POLICY_MIN(NLA_U16, 1),
8261         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8262         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8263         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8264                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8265         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8266         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8267         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8268                 NLA_POLICY_MIN(NLA_U16, 1),
8269         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8270                 NLA_POLICY_MIN(NLA_U16, 1),
8271         [NL80211_MESHCONF_POWER_MODE] =
8272                 NLA_POLICY_RANGE(NLA_U32,
8273                                  NL80211_MESH_POWER_ACTIVE,
8274                                  NL80211_MESH_POWER_MAX),
8275         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8276         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8277         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8278         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8279         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8280 };
8281
8282 static const struct nla_policy
8283         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8284         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8285         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8286         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8287         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8288         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8289         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8290         [NL80211_MESH_SETUP_IE] =
8291                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8292                                        IEEE80211_MAX_DATA_LEN),
8293         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8294 };
8295
8296 static int nl80211_parse_mesh_config(struct genl_info *info,
8297                                      struct mesh_config *cfg,
8298                                      u32 *mask_out)
8299 {
8300         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8301         u32 mask = 0;
8302         u16 ht_opmode;
8303
8304 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8305 do {                                                                    \
8306         if (tb[attr]) {                                                 \
8307                 cfg->param = fn(tb[attr]);                              \
8308                 mask |= BIT((attr) - 1);                                \
8309         }                                                               \
8310 } while (0)
8311
8312         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8313                 return -EINVAL;
8314         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8315                 return -EINVAL;
8316
8317         /* This makes sure that there aren't more than 32 mesh config
8318          * parameters (otherwise our bitfield scheme would not work.) */
8319         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8320
8321         /* Fill in the params struct */
8322         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8323                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8324         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8325                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8326                                   nla_get_u16);
8327         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8328                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8329                                   nla_get_u16);
8330         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8331                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8332                                   nla_get_u16);
8333         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8334                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8335         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8336                                   NL80211_MESHCONF_TTL, nla_get_u8);
8337         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8338                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8339         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8340                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8341                                   nla_get_u8);
8342         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8343                                   mask,
8344                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8345                                   nla_get_u32);
8346         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8347                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8348                                   nla_get_u8);
8349         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8350                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8351                                   nla_get_u32);
8352         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8353             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8354                 return -EINVAL;
8355         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8356                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8357                                   nla_get_u16);
8358         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8359                                   mask,
8360                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8361                                   nla_get_u32);
8362         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8363             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8364              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8365                 return -EINVAL;
8366         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8367                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8368                                   nla_get_u16);
8369         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8370                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8371                                   nla_get_u16);
8372         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8373                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8374                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8375                                   nla_get_u16);
8376         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8377                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8378         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8379                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8380                                   nla_get_u16);
8381         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8382                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8383                                   nla_get_u8);
8384         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8385                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8386         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8387                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8388                                   nla_get_s32);
8389         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8390                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8391                                   nla_get_u8);
8392         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8393                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8394                                   nla_get_u8);
8395         /*
8396          * Check HT operation mode based on
8397          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8398          */
8399         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8400                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8401
8402                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8403                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8404                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8405                         return -EINVAL;
8406
8407                 /* NON_HT_STA bit is reserved, but some programs set it */
8408                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8409
8410                 cfg->ht_opmode = ht_opmode;
8411                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8412         }
8413         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8414                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8415                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8416                                   nla_get_u32);
8417         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8418             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8419              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8420                 return -EINVAL;
8421         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8422                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8423                                   nla_get_u16);
8424         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8425                                   mask,
8426                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8427                                   nla_get_u16);
8428         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8429                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8430         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8431                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8432         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8433                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8434         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8435                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8436         if (mask_out)
8437                 *mask_out = mask;
8438
8439         return 0;
8440
8441 #undef FILL_IN_MESH_PARAM_IF_SET
8442 }
8443
8444 static int nl80211_parse_mesh_setup(struct genl_info *info,
8445                                      struct mesh_setup *setup)
8446 {
8447         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8448         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8449
8450         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8451                 return -EINVAL;
8452         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8453                 return -EINVAL;
8454
8455         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8456                 setup->sync_method =
8457                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8458                  IEEE80211_SYNC_METHOD_VENDOR :
8459                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8460
8461         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8462                 setup->path_sel_proto =
8463                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8464                  IEEE80211_PATH_PROTOCOL_VENDOR :
8465                  IEEE80211_PATH_PROTOCOL_HWMP;
8466
8467         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8468                 setup->path_metric =
8469                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8470                  IEEE80211_PATH_METRIC_VENDOR :
8471                  IEEE80211_PATH_METRIC_AIRTIME;
8472
8473         if (tb[NL80211_MESH_SETUP_IE]) {
8474                 struct nlattr *ieattr =
8475                         tb[NL80211_MESH_SETUP_IE];
8476                 setup->ie = nla_data(ieattr);
8477                 setup->ie_len = nla_len(ieattr);
8478         }
8479         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8480             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8481                 return -EINVAL;
8482         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8483         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8484         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8485         if (setup->is_secure)
8486                 setup->user_mpm = true;
8487
8488         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8489                 if (!setup->user_mpm)
8490                         return -EINVAL;
8491                 setup->auth_id =
8492                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8493         }
8494
8495         return 0;
8496 }
8497
8498 static int nl80211_update_mesh_config(struct sk_buff *skb,
8499                                       struct genl_info *info)
8500 {
8501         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8502         struct net_device *dev = info->user_ptr[1];
8503         struct wireless_dev *wdev = dev->ieee80211_ptr;
8504         struct mesh_config cfg = {};
8505         u32 mask;
8506         int err;
8507
8508         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8509                 return -EOPNOTSUPP;
8510
8511         if (!rdev->ops->update_mesh_config)
8512                 return -EOPNOTSUPP;
8513
8514         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8515         if (err)
8516                 return err;
8517
8518         wdev_lock(wdev);
8519         if (!wdev->u.mesh.id_len)
8520                 err = -ENOLINK;
8521
8522         if (!err)
8523                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8524
8525         wdev_unlock(wdev);
8526
8527         return err;
8528 }
8529
8530 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8531                               struct sk_buff *msg)
8532 {
8533         struct nlattr *nl_reg_rules;
8534         unsigned int i;
8535
8536         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8537             (regdom->dfs_region &&
8538              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8539                 goto nla_put_failure;
8540
8541         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8542         if (!nl_reg_rules)
8543                 goto nla_put_failure;
8544
8545         for (i = 0; i < regdom->n_reg_rules; i++) {
8546                 struct nlattr *nl_reg_rule;
8547                 const struct ieee80211_reg_rule *reg_rule;
8548                 const struct ieee80211_freq_range *freq_range;
8549                 const struct ieee80211_power_rule *power_rule;
8550                 unsigned int max_bandwidth_khz;
8551
8552                 reg_rule = &regdom->reg_rules[i];
8553                 freq_range = &reg_rule->freq_range;
8554                 power_rule = &reg_rule->power_rule;
8555
8556                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8557                 if (!nl_reg_rule)
8558                         goto nla_put_failure;
8559
8560                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8561                 if (!max_bandwidth_khz)
8562                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8563                                                                   reg_rule);
8564
8565                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8566                                 reg_rule->flags) ||
8567                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8568                                 freq_range->start_freq_khz) ||
8569                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8570                                 freq_range->end_freq_khz) ||
8571                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8572                                 max_bandwidth_khz) ||
8573                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8574                                 power_rule->max_antenna_gain) ||
8575                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8576                                 power_rule->max_eirp) ||
8577                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8578                                 reg_rule->dfs_cac_ms))
8579                         goto nla_put_failure;
8580
8581                 nla_nest_end(msg, nl_reg_rule);
8582         }
8583
8584         nla_nest_end(msg, nl_reg_rules);
8585         return 0;
8586
8587 nla_put_failure:
8588         return -EMSGSIZE;
8589 }
8590
8591 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8592 {
8593         const struct ieee80211_regdomain *regdom = NULL;
8594         struct cfg80211_registered_device *rdev;
8595         struct wiphy *wiphy = NULL;
8596         struct sk_buff *msg;
8597         int err = -EMSGSIZE;
8598         void *hdr;
8599
8600         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8601         if (!msg)
8602                 return -ENOBUFS;
8603
8604         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8605                              NL80211_CMD_GET_REG);
8606         if (!hdr)
8607                 goto put_failure;
8608
8609         rtnl_lock();
8610
8611         if (info->attrs[NL80211_ATTR_WIPHY]) {
8612                 bool self_managed;
8613
8614                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8615                 if (IS_ERR(rdev)) {
8616                         err = PTR_ERR(rdev);
8617                         goto nla_put_failure;
8618                 }
8619
8620                 wiphy = &rdev->wiphy;
8621                 self_managed = wiphy->regulatory_flags &
8622                                REGULATORY_WIPHY_SELF_MANAGED;
8623
8624                 rcu_read_lock();
8625
8626                 regdom = get_wiphy_regdom(wiphy);
8627
8628                 /* a self-managed-reg device must have a private regdom */
8629                 if (WARN_ON(!regdom && self_managed)) {
8630                         err = -EINVAL;
8631                         goto nla_put_failure_rcu;
8632                 }
8633
8634                 if (regdom &&
8635                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8636                         goto nla_put_failure_rcu;
8637         } else {
8638                 rcu_read_lock();
8639         }
8640
8641         if (!wiphy && reg_last_request_cell_base() &&
8642             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8643                         NL80211_USER_REG_HINT_CELL_BASE))
8644                 goto nla_put_failure_rcu;
8645
8646         if (!regdom)
8647                 regdom = rcu_dereference(cfg80211_regdomain);
8648
8649         if (nl80211_put_regdom(regdom, msg))
8650                 goto nla_put_failure_rcu;
8651
8652         rcu_read_unlock();
8653
8654         genlmsg_end(msg, hdr);
8655         rtnl_unlock();
8656         return genlmsg_reply(msg, info);
8657
8658 nla_put_failure_rcu:
8659         rcu_read_unlock();
8660 nla_put_failure:
8661         rtnl_unlock();
8662 put_failure:
8663         nlmsg_free(msg);
8664         return err;
8665 }
8666
8667 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8668                                u32 seq, int flags, struct wiphy *wiphy,
8669                                const struct ieee80211_regdomain *regdom)
8670 {
8671         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8672                                    NL80211_CMD_GET_REG);
8673
8674         if (!hdr)
8675                 return -1;
8676
8677         genl_dump_check_consistent(cb, hdr);
8678
8679         if (nl80211_put_regdom(regdom, msg))
8680                 goto nla_put_failure;
8681
8682         if (!wiphy && reg_last_request_cell_base() &&
8683             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8684                         NL80211_USER_REG_HINT_CELL_BASE))
8685                 goto nla_put_failure;
8686
8687         if (wiphy &&
8688             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8689                 goto nla_put_failure;
8690
8691         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8692             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8693                 goto nla_put_failure;
8694
8695         genlmsg_end(msg, hdr);
8696         return 0;
8697
8698 nla_put_failure:
8699         genlmsg_cancel(msg, hdr);
8700         return -EMSGSIZE;
8701 }
8702
8703 static int nl80211_get_reg_dump(struct sk_buff *skb,
8704                                 struct netlink_callback *cb)
8705 {
8706         const struct ieee80211_regdomain *regdom = NULL;
8707         struct cfg80211_registered_device *rdev;
8708         int err, reg_idx, start = cb->args[2];
8709
8710         rcu_read_lock();
8711
8712         if (cfg80211_regdomain && start == 0) {
8713                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8714                                           NLM_F_MULTI, NULL,
8715                                           rcu_dereference(cfg80211_regdomain));
8716                 if (err < 0)
8717                         goto out_err;
8718         }
8719
8720         /* the global regdom is idx 0 */
8721         reg_idx = 1;
8722         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8723                 regdom = get_wiphy_regdom(&rdev->wiphy);
8724                 if (!regdom)
8725                         continue;
8726
8727                 if (++reg_idx <= start)
8728                         continue;
8729
8730                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8731                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8732                 if (err < 0) {
8733                         reg_idx--;
8734                         break;
8735                 }
8736         }
8737
8738         cb->args[2] = reg_idx;
8739         err = skb->len;
8740 out_err:
8741         rcu_read_unlock();
8742         return err;
8743 }
8744
8745 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8746 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8747         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8748         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8749         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8750         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8751         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8752         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8753         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8754 };
8755
8756 static int parse_reg_rule(struct nlattr *tb[],
8757         struct ieee80211_reg_rule *reg_rule)
8758 {
8759         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8760         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8761
8762         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8763                 return -EINVAL;
8764         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8765                 return -EINVAL;
8766         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8767                 return -EINVAL;
8768         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8769                 return -EINVAL;
8770         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8771                 return -EINVAL;
8772
8773         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8774
8775         freq_range->start_freq_khz =
8776                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8777         freq_range->end_freq_khz =
8778                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8779         freq_range->max_bandwidth_khz =
8780                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8781
8782         power_rule->max_eirp =
8783                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8784
8785         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8786                 power_rule->max_antenna_gain =
8787                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8788
8789         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8790                 reg_rule->dfs_cac_ms =
8791                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8792
8793         return 0;
8794 }
8795
8796 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8797 {
8798         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8799         struct nlattr *nl_reg_rule;
8800         char *alpha2;
8801         int rem_reg_rules, r;
8802         u32 num_rules = 0, rule_idx = 0;
8803         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8804         struct ieee80211_regdomain *rd;
8805
8806         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8807                 return -EINVAL;
8808
8809         if (!info->attrs[NL80211_ATTR_REG_RULES])
8810                 return -EINVAL;
8811
8812         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8813
8814         if (info->attrs[NL80211_ATTR_DFS_REGION])
8815                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8816
8817         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8818                             rem_reg_rules) {
8819                 num_rules++;
8820                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8821                         return -EINVAL;
8822         }
8823
8824         rtnl_lock();
8825         if (!reg_is_valid_request(alpha2)) {
8826                 r = -EINVAL;
8827                 goto out;
8828         }
8829
8830         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8831         if (!rd) {
8832                 r = -ENOMEM;
8833                 goto out;
8834         }
8835
8836         rd->n_reg_rules = num_rules;
8837         rd->alpha2[0] = alpha2[0];
8838         rd->alpha2[1] = alpha2[1];
8839
8840         /*
8841          * Disable DFS master mode if the DFS region was
8842          * not supported or known on this kernel.
8843          */
8844         if (reg_supported_dfs_region(dfs_region))
8845                 rd->dfs_region = dfs_region;
8846
8847         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8848                             rem_reg_rules) {
8849                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8850                                                 nl_reg_rule, reg_rule_policy,
8851                                                 info->extack);
8852                 if (r)
8853                         goto bad_reg;
8854                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8855                 if (r)
8856                         goto bad_reg;
8857
8858                 rule_idx++;
8859
8860                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8861                         r = -EINVAL;
8862                         goto bad_reg;
8863                 }
8864         }
8865
8866         r = set_regdom(rd, REGD_SOURCE_CRDA);
8867         /* set_regdom takes ownership of rd */
8868         rd = NULL;
8869  bad_reg:
8870         kfree(rd);
8871  out:
8872         rtnl_unlock();
8873         return r;
8874 }
8875 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8876
8877 static int validate_scan_freqs(struct nlattr *freqs)
8878 {
8879         struct nlattr *attr1, *attr2;
8880         int n_channels = 0, tmp1, tmp2;
8881
8882         nla_for_each_nested(attr1, freqs, tmp1)
8883                 if (nla_len(attr1) != sizeof(u32))
8884                         return 0;
8885
8886         nla_for_each_nested(attr1, freqs, tmp1) {
8887                 n_channels++;
8888                 /*
8889                  * Some hardware has a limited channel list for
8890                  * scanning, and it is pretty much nonsensical
8891                  * to scan for a channel twice, so disallow that
8892                  * and don't require drivers to check that the
8893                  * channel list they get isn't longer than what
8894                  * they can scan, as long as they can scan all
8895                  * the channels they registered at once.
8896                  */
8897                 nla_for_each_nested(attr2, freqs, tmp2)
8898                         if (attr1 != attr2 &&
8899                             nla_get_u32(attr1) == nla_get_u32(attr2))
8900                                 return 0;
8901         }
8902
8903         return n_channels;
8904 }
8905
8906 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8907 {
8908         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8909 }
8910
8911 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8912                             struct cfg80211_bss_selection *bss_select)
8913 {
8914         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8915         struct nlattr *nest;
8916         int err;
8917         bool found = false;
8918         int i;
8919
8920         /* only process one nested attribute */
8921         nest = nla_data(nla);
8922         if (!nla_ok(nest, nla_len(nest)))
8923                 return -EINVAL;
8924
8925         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8926                                           nest, nl80211_bss_select_policy,
8927                                           NULL);
8928         if (err)
8929                 return err;
8930
8931         /* only one attribute may be given */
8932         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8933                 if (attr[i]) {
8934                         if (found)
8935                                 return -EINVAL;
8936                         found = true;
8937                 }
8938         }
8939
8940         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8941
8942         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8943                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8944
8945         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8946                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8947                 bss_select->param.band_pref =
8948                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8949                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8950                         return -EINVAL;
8951         }
8952
8953         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8954                 struct nl80211_bss_select_rssi_adjust *adj_param;
8955
8956                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8957                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8958                 bss_select->param.adjust.band = adj_param->band;
8959                 bss_select->param.adjust.delta = adj_param->delta;
8960                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8961                         return -EINVAL;
8962         }
8963
8964         /* user-space did not provide behaviour attribute */
8965         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8966                 return -EINVAL;
8967
8968         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8969                 return -EINVAL;
8970
8971         return 0;
8972 }
8973
8974 int nl80211_parse_random_mac(struct nlattr **attrs,
8975                              u8 *mac_addr, u8 *mac_addr_mask)
8976 {
8977         int i;
8978
8979         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8980                 eth_zero_addr(mac_addr);
8981                 eth_zero_addr(mac_addr_mask);
8982                 mac_addr[0] = 0x2;
8983                 mac_addr_mask[0] = 0x3;
8984
8985                 return 0;
8986         }
8987
8988         /* need both or none */
8989         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8990                 return -EINVAL;
8991
8992         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8993         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8994
8995         /* don't allow or configure an mcast address */
8996         if (!is_multicast_ether_addr(mac_addr_mask) ||
8997             is_multicast_ether_addr(mac_addr))
8998                 return -EINVAL;
8999
9000         /*
9001          * allow users to pass a MAC address that has bits set outside
9002          * of the mask, but don't bother drivers with having to deal
9003          * with such bits
9004          */
9005         for (i = 0; i < ETH_ALEN; i++)
9006                 mac_addr[i] &= mac_addr_mask[i];
9007
9008         return 0;
9009 }
9010
9011 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
9012                                               struct ieee80211_channel *chan)
9013 {
9014         unsigned int link_id;
9015         bool all_ok = true;
9016
9017         ASSERT_WDEV_LOCK(wdev);
9018
9019         if (!cfg80211_beaconing_iface_active(wdev))
9020                 return true;
9021
9022         /*
9023          * FIXME: check if we have a free HW resource/link for chan
9024          *
9025          * This, as well as the FIXME below, requires knowing the link
9026          * capabilities of the hardware.
9027          */
9028
9029         /* we cannot leave radar channels */
9030         for_each_valid_link(wdev, link_id) {
9031                 struct cfg80211_chan_def *chandef;
9032
9033                 chandef = wdev_chandef(wdev, link_id);
9034                 if (!chandef || !chandef->chan)
9035                         continue;
9036
9037                 /*
9038                  * FIXME: don't require all_ok, but rather check only the
9039                  *        correct HW resource/link onto which 'chan' falls,
9040                  *        as only that link leaves the channel for doing
9041                  *        the off-channel operation.
9042                  */
9043
9044                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9045                         all_ok = false;
9046         }
9047
9048         if (all_ok)
9049                 return true;
9050
9051         return regulatory_pre_cac_allowed(wdev->wiphy);
9052 }
9053
9054 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9055                                     enum nl80211_ext_feature_index feat)
9056 {
9057         if (!(flags & flag))
9058                 return true;
9059         if (wiphy_ext_feature_isset(wiphy, feat))
9060                 return true;
9061         return false;
9062 }
9063
9064 static int
9065 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9066                          void *request, struct nlattr **attrs,
9067                          bool is_sched_scan)
9068 {
9069         u8 *mac_addr, *mac_addr_mask;
9070         u32 *flags;
9071         enum nl80211_feature_flags randomness_flag;
9072
9073         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9074                 return 0;
9075
9076         if (is_sched_scan) {
9077                 struct cfg80211_sched_scan_request *req = request;
9078
9079                 randomness_flag = wdev ?
9080                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9081                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9082                 flags = &req->flags;
9083                 mac_addr = req->mac_addr;
9084                 mac_addr_mask = req->mac_addr_mask;
9085         } else {
9086                 struct cfg80211_scan_request *req = request;
9087
9088                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9089                 flags = &req->flags;
9090                 mac_addr = req->mac_addr;
9091                 mac_addr_mask = req->mac_addr_mask;
9092         }
9093
9094         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9095
9096         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9097              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9098             !nl80211_check_scan_feat(wiphy, *flags,
9099                                      NL80211_SCAN_FLAG_LOW_SPAN,
9100                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9101             !nl80211_check_scan_feat(wiphy, *flags,
9102                                      NL80211_SCAN_FLAG_LOW_POWER,
9103                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9104             !nl80211_check_scan_feat(wiphy, *flags,
9105                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9106                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9107             !nl80211_check_scan_feat(wiphy, *flags,
9108                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9109                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9110             !nl80211_check_scan_feat(wiphy, *flags,
9111                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9112                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9113             !nl80211_check_scan_feat(wiphy, *flags,
9114                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9115                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9116             !nl80211_check_scan_feat(wiphy, *flags,
9117                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9118                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9119             !nl80211_check_scan_feat(wiphy, *flags,
9120                                      NL80211_SCAN_FLAG_RANDOM_SN,
9121                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9122             !nl80211_check_scan_feat(wiphy, *flags,
9123                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9124                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9125                 return -EOPNOTSUPP;
9126
9127         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9128                 int err;
9129
9130                 if (!(wiphy->features & randomness_flag) ||
9131                     (wdev && wdev->connected))
9132                         return -EOPNOTSUPP;
9133
9134                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9135                 if (err)
9136                         return err;
9137         }
9138
9139         return 0;
9140 }
9141
9142 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9143 {
9144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9145         struct wireless_dev *wdev = info->user_ptr[1];
9146         struct cfg80211_scan_request *request;
9147         struct nlattr *scan_freqs = NULL;
9148         bool scan_freqs_khz = false;
9149         struct nlattr *attr;
9150         struct wiphy *wiphy;
9151         int err, tmp, n_ssids = 0, n_channels, i;
9152         size_t ie_len, size;
9153
9154         wiphy = &rdev->wiphy;
9155
9156         if (wdev->iftype == NL80211_IFTYPE_NAN)
9157                 return -EOPNOTSUPP;
9158
9159         if (!rdev->ops->scan)
9160                 return -EOPNOTSUPP;
9161
9162         if (rdev->scan_req || rdev->scan_msg)
9163                 return -EBUSY;
9164
9165         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9166                 if (!wiphy_ext_feature_isset(wiphy,
9167                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9168                         return -EOPNOTSUPP;
9169                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9170                 scan_freqs_khz = true;
9171         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9172                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9173
9174         if (scan_freqs) {
9175                 n_channels = validate_scan_freqs(scan_freqs);
9176                 if (!n_channels)
9177                         return -EINVAL;
9178         } else {
9179                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9180         }
9181
9182         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9183                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9184                         n_ssids++;
9185
9186         if (n_ssids > wiphy->max_scan_ssids)
9187                 return -EINVAL;
9188
9189         if (info->attrs[NL80211_ATTR_IE])
9190                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9191         else
9192                 ie_len = 0;
9193
9194         if (ie_len > wiphy->max_scan_ie_len)
9195                 return -EINVAL;
9196
9197         size = struct_size(request, channels, n_channels);
9198         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9199         size = size_add(size, ie_len);
9200         request = kzalloc(size, GFP_KERNEL);
9201         if (!request)
9202                 return -ENOMEM;
9203
9204         if (n_ssids)
9205                 request->ssids = (void *)&request->channels[n_channels];
9206         request->n_ssids = n_ssids;
9207         if (ie_len) {
9208                 if (n_ssids)
9209                         request->ie = (void *)(request->ssids + n_ssids);
9210                 else
9211                         request->ie = (void *)(request->channels + n_channels);
9212         }
9213
9214         i = 0;
9215         if (scan_freqs) {
9216                 /* user specified, bail out if channel not found */
9217                 nla_for_each_nested(attr, scan_freqs, tmp) {
9218                         struct ieee80211_channel *chan;
9219                         int freq = nla_get_u32(attr);
9220
9221                         if (!scan_freqs_khz)
9222                                 freq = MHZ_TO_KHZ(freq);
9223
9224                         chan = ieee80211_get_channel_khz(wiphy, freq);
9225                         if (!chan) {
9226                                 err = -EINVAL;
9227                                 goto out_free;
9228                         }
9229
9230                         /* ignore disabled channels */
9231                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9232                                 continue;
9233
9234                         request->channels[i] = chan;
9235                         i++;
9236                 }
9237         } else {
9238                 enum nl80211_band band;
9239
9240                 /* all channels */
9241                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9242                         int j;
9243
9244                         if (!wiphy->bands[band])
9245                                 continue;
9246                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9247                                 struct ieee80211_channel *chan;
9248
9249                                 chan = &wiphy->bands[band]->channels[j];
9250
9251                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9252                                         continue;
9253
9254                                 request->channels[i] = chan;
9255                                 i++;
9256                         }
9257                 }
9258         }
9259
9260         if (!i) {
9261                 err = -EINVAL;
9262                 goto out_free;
9263         }
9264
9265         request->n_channels = i;
9266
9267         wdev_lock(wdev);
9268         for (i = 0; i < request->n_channels; i++) {
9269                 struct ieee80211_channel *chan = request->channels[i];
9270
9271                 /* if we can go off-channel to the target channel we're good */
9272                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9273                         continue;
9274
9275                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9276                         wdev_unlock(wdev);
9277                         err = -EBUSY;
9278                         goto out_free;
9279                 }
9280         }
9281         wdev_unlock(wdev);
9282
9283         i = 0;
9284         if (n_ssids) {
9285                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9286                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9287                                 err = -EINVAL;
9288                                 goto out_free;
9289                         }
9290                         request->ssids[i].ssid_len = nla_len(attr);
9291                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9292                         i++;
9293                 }
9294         }
9295
9296         if (info->attrs[NL80211_ATTR_IE]) {
9297                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9298                 memcpy((void *)request->ie,
9299                        nla_data(info->attrs[NL80211_ATTR_IE]),
9300                        request->ie_len);
9301         }
9302
9303         for (i = 0; i < NUM_NL80211_BANDS; i++)
9304                 if (wiphy->bands[i])
9305                         request->rates[i] =
9306                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9307
9308         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9309                 nla_for_each_nested(attr,
9310                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9311                                     tmp) {
9312                         enum nl80211_band band = nla_type(attr);
9313
9314                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9315                                 err = -EINVAL;
9316                                 goto out_free;
9317                         }
9318
9319                         if (!wiphy->bands[band])
9320                                 continue;
9321
9322                         err = ieee80211_get_ratemask(wiphy->bands[band],
9323                                                      nla_data(attr),
9324                                                      nla_len(attr),
9325                                                      &request->rates[band]);
9326                         if (err)
9327                                 goto out_free;
9328                 }
9329         }
9330
9331         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9332                 request->duration =
9333                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9334                 request->duration_mandatory =
9335                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9336         }
9337
9338         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9339                                        false);
9340         if (err)
9341                 goto out_free;
9342
9343         request->no_cck =
9344                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9345
9346         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9347          * BSSID to scan for. This was problematic because that same attribute
9348          * was already used for another purpose (local random MAC address). The
9349          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9350          * compatibility with older userspace components, also use the
9351          * NL80211_ATTR_MAC value here if it can be determined to be used for
9352          * the specific BSSID use case instead of the random MAC address
9353          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9354          */
9355         if (info->attrs[NL80211_ATTR_BSSID])
9356                 memcpy(request->bssid,
9357                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9358         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9359                  info->attrs[NL80211_ATTR_MAC])
9360                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9361                        ETH_ALEN);
9362         else
9363                 eth_broadcast_addr(request->bssid);
9364
9365         request->wdev = wdev;
9366         request->wiphy = &rdev->wiphy;
9367         request->scan_start = jiffies;
9368
9369         rdev->scan_req = request;
9370         err = cfg80211_scan(rdev);
9371
9372         if (err)
9373                 goto out_free;
9374
9375         nl80211_send_scan_start(rdev, wdev);
9376         dev_hold(wdev->netdev);
9377
9378         return 0;
9379
9380  out_free:
9381         rdev->scan_req = NULL;
9382         kfree(request);
9383
9384         return err;
9385 }
9386
9387 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9388 {
9389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9390         struct wireless_dev *wdev = info->user_ptr[1];
9391
9392         if (!rdev->ops->abort_scan)
9393                 return -EOPNOTSUPP;
9394
9395         if (rdev->scan_msg)
9396                 return 0;
9397
9398         if (!rdev->scan_req)
9399                 return -ENOENT;
9400
9401         rdev_abort_scan(rdev, wdev);
9402         return 0;
9403 }
9404
9405 static int
9406 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9407                                struct cfg80211_sched_scan_request *request,
9408                                struct nlattr **attrs)
9409 {
9410         int tmp, err, i = 0;
9411         struct nlattr *attr;
9412
9413         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9414                 u32 interval;
9415
9416                 /*
9417                  * If scan plans are not specified,
9418                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9419                  * case one scan plan will be set with the specified scan
9420                  * interval and infinite number of iterations.
9421                  */
9422                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9423                 if (!interval)
9424                         return -EINVAL;
9425
9426                 request->scan_plans[0].interval =
9427                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9428                 if (!request->scan_plans[0].interval)
9429                         return -EINVAL;
9430
9431                 if (request->scan_plans[0].interval >
9432                     wiphy->max_sched_scan_plan_interval)
9433                         request->scan_plans[0].interval =
9434                                 wiphy->max_sched_scan_plan_interval;
9435
9436                 return 0;
9437         }
9438
9439         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9440                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9441
9442                 if (WARN_ON(i >= n_plans))
9443                         return -EINVAL;
9444
9445                 err = nla_parse_nested_deprecated(plan,
9446                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9447                                                   attr, nl80211_plan_policy,
9448                                                   NULL);
9449                 if (err)
9450                         return err;
9451
9452                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9453                         return -EINVAL;
9454
9455                 request->scan_plans[i].interval =
9456                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9457                 if (!request->scan_plans[i].interval ||
9458                     request->scan_plans[i].interval >
9459                     wiphy->max_sched_scan_plan_interval)
9460                         return -EINVAL;
9461
9462                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9463                         request->scan_plans[i].iterations =
9464                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9465                         if (!request->scan_plans[i].iterations ||
9466                             (request->scan_plans[i].iterations >
9467                              wiphy->max_sched_scan_plan_iterations))
9468                                 return -EINVAL;
9469                 } else if (i < n_plans - 1) {
9470                         /*
9471                          * All scan plans but the last one must specify
9472                          * a finite number of iterations
9473                          */
9474                         return -EINVAL;
9475                 }
9476
9477                 i++;
9478         }
9479
9480         /*
9481          * The last scan plan must not specify the number of
9482          * iterations, it is supposed to run infinitely
9483          */
9484         if (request->scan_plans[n_plans - 1].iterations)
9485                 return  -EINVAL;
9486
9487         return 0;
9488 }
9489
9490 static int
9491 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9492                                        struct cfg80211_match_set *match_sets,
9493                                        struct nlattr *tb_band_rssi,
9494                                        s32 rssi_thold)
9495 {
9496         struct nlattr *attr;
9497         int i, tmp, ret = 0;
9498
9499         if (!wiphy_ext_feature_isset(wiphy,
9500                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9501                 if (tb_band_rssi)
9502                         ret = -EOPNOTSUPP;
9503                 else
9504                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9505                                 match_sets->per_band_rssi_thold[i] =
9506                                         NL80211_SCAN_RSSI_THOLD_OFF;
9507                 return ret;
9508         }
9509
9510         for (i = 0; i < NUM_NL80211_BANDS; i++)
9511                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9512
9513         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9514                 enum nl80211_band band = nla_type(attr);
9515
9516                 if (band < 0 || band >= NUM_NL80211_BANDS)
9517                         return -EINVAL;
9518
9519                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9520         }
9521
9522         return 0;
9523 }
9524
9525 static struct cfg80211_sched_scan_request *
9526 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9527                          struct nlattr **attrs, int max_match_sets)
9528 {
9529         struct cfg80211_sched_scan_request *request;
9530         struct nlattr *attr;
9531         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9532         enum nl80211_band band;
9533         size_t ie_len, size;
9534         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9535         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9536
9537         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9538                 n_channels = validate_scan_freqs(
9539                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9540                 if (!n_channels)
9541                         return ERR_PTR(-EINVAL);
9542         } else {
9543                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9544         }
9545
9546         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9547                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9548                                     tmp)
9549                         n_ssids++;
9550
9551         if (n_ssids > wiphy->max_sched_scan_ssids)
9552                 return ERR_PTR(-EINVAL);
9553
9554         /*
9555          * First, count the number of 'real' matchsets. Due to an issue with
9556          * the old implementation, matchsets containing only the RSSI attribute
9557          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9558          * RSSI for all matchsets, rather than their own matchset for reporting
9559          * all APs with a strong RSSI. This is needed to be compatible with
9560          * older userspace that treated a matchset with only the RSSI as the
9561          * global RSSI for all other matchsets - if there are other matchsets.
9562          */
9563         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9564                 nla_for_each_nested(attr,
9565                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9566                                     tmp) {
9567                         struct nlattr *rssi;
9568
9569                         err = nla_parse_nested_deprecated(tb,
9570                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9571                                                           attr,
9572                                                           nl80211_match_policy,
9573                                                           NULL);
9574                         if (err)
9575                                 return ERR_PTR(err);
9576
9577                         /* SSID and BSSID are mutually exclusive */
9578                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9579                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9580                                 return ERR_PTR(-EINVAL);
9581
9582                         /* add other standalone attributes here */
9583                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9584                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9585                                 n_match_sets++;
9586                                 continue;
9587                         }
9588                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9589                         if (rssi)
9590                                 default_match_rssi = nla_get_s32(rssi);
9591                 }
9592         }
9593
9594         /* However, if there's no other matchset, add the RSSI one */
9595         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9596                 n_match_sets = 1;
9597
9598         if (n_match_sets > max_match_sets)
9599                 return ERR_PTR(-EINVAL);
9600
9601         if (attrs[NL80211_ATTR_IE])
9602                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9603         else
9604                 ie_len = 0;
9605
9606         if (ie_len > wiphy->max_sched_scan_ie_len)
9607                 return ERR_PTR(-EINVAL);
9608
9609         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9610                 /*
9611                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9612                  * each scan plan already specifies its own interval
9613                  */
9614                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9615                         return ERR_PTR(-EINVAL);
9616
9617                 nla_for_each_nested(attr,
9618                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9619                         n_plans++;
9620         } else {
9621                 /*
9622                  * The scan interval attribute is kept for backward
9623                  * compatibility. If no scan plans are specified and sched scan
9624                  * interval is specified, one scan plan will be set with this
9625                  * scan interval and infinite number of iterations.
9626                  */
9627                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9628                         return ERR_PTR(-EINVAL);
9629
9630                 n_plans = 1;
9631         }
9632
9633         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9634                 return ERR_PTR(-EINVAL);
9635
9636         if (!wiphy_ext_feature_isset(
9637                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9638             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9639              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9640                 return ERR_PTR(-EINVAL);
9641
9642         size = struct_size(request, channels, n_channels);
9643         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9644         size = size_add(size, array_size(sizeof(*request->match_sets),
9645                                          n_match_sets));
9646         size = size_add(size, array_size(sizeof(*request->scan_plans),
9647                                          n_plans));
9648         size = size_add(size, ie_len);
9649         request = kzalloc(size, GFP_KERNEL);
9650         if (!request)
9651                 return ERR_PTR(-ENOMEM);
9652
9653         if (n_ssids)
9654                 request->ssids = (void *)&request->channels[n_channels];
9655         request->n_ssids = n_ssids;
9656         if (ie_len) {
9657                 if (n_ssids)
9658                         request->ie = (void *)(request->ssids + n_ssids);
9659                 else
9660                         request->ie = (void *)(request->channels + n_channels);
9661         }
9662
9663         if (n_match_sets) {
9664                 if (request->ie)
9665                         request->match_sets = (void *)(request->ie + ie_len);
9666                 else if (n_ssids)
9667                         request->match_sets =
9668                                 (void *)(request->ssids + n_ssids);
9669                 else
9670                         request->match_sets =
9671                                 (void *)(request->channels + n_channels);
9672         }
9673         request->n_match_sets = n_match_sets;
9674
9675         if (n_match_sets)
9676                 request->scan_plans = (void *)(request->match_sets +
9677                                                n_match_sets);
9678         else if (request->ie)
9679                 request->scan_plans = (void *)(request->ie + ie_len);
9680         else if (n_ssids)
9681                 request->scan_plans = (void *)(request->ssids + n_ssids);
9682         else
9683                 request->scan_plans = (void *)(request->channels + n_channels);
9684
9685         request->n_scan_plans = n_plans;
9686
9687         i = 0;
9688         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9689                 /* user specified, bail out if channel not found */
9690                 nla_for_each_nested(attr,
9691                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9692                                     tmp) {
9693                         struct ieee80211_channel *chan;
9694
9695                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9696
9697                         if (!chan) {
9698                                 err = -EINVAL;
9699                                 goto out_free;
9700                         }
9701
9702                         /* ignore disabled channels */
9703                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9704                                 continue;
9705
9706                         request->channels[i] = chan;
9707                         i++;
9708                 }
9709         } else {
9710                 /* all channels */
9711                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9712                         int j;
9713
9714                         if (!wiphy->bands[band])
9715                                 continue;
9716                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9717                                 struct ieee80211_channel *chan;
9718
9719                                 chan = &wiphy->bands[band]->channels[j];
9720
9721                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9722                                         continue;
9723
9724                                 request->channels[i] = chan;
9725                                 i++;
9726                         }
9727                 }
9728         }
9729
9730         if (!i) {
9731                 err = -EINVAL;
9732                 goto out_free;
9733         }
9734
9735         request->n_channels = i;
9736
9737         i = 0;
9738         if (n_ssids) {
9739                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9740                                     tmp) {
9741                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9742                                 err = -EINVAL;
9743                                 goto out_free;
9744                         }
9745                         request->ssids[i].ssid_len = nla_len(attr);
9746                         memcpy(request->ssids[i].ssid, nla_data(attr),
9747                                nla_len(attr));
9748                         i++;
9749                 }
9750         }
9751
9752         i = 0;
9753         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9754                 nla_for_each_nested(attr,
9755                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9756                                     tmp) {
9757                         struct nlattr *ssid, *bssid, *rssi;
9758
9759                         err = nla_parse_nested_deprecated(tb,
9760                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9761                                                           attr,
9762                                                           nl80211_match_policy,
9763                                                           NULL);
9764                         if (err)
9765                                 goto out_free;
9766                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9767                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9768
9769                         if (!ssid && !bssid) {
9770                                 i++;
9771                                 continue;
9772                         }
9773
9774                         if (WARN_ON(i >= n_match_sets)) {
9775                                 /* this indicates a programming error,
9776                                  * the loop above should have verified
9777                                  * things properly
9778                                  */
9779                                 err = -EINVAL;
9780                                 goto out_free;
9781                         }
9782
9783                         if (ssid) {
9784                                 memcpy(request->match_sets[i].ssid.ssid,
9785                                        nla_data(ssid), nla_len(ssid));
9786                                 request->match_sets[i].ssid.ssid_len =
9787                                         nla_len(ssid);
9788                         }
9789                         if (bssid)
9790                                 memcpy(request->match_sets[i].bssid,
9791                                        nla_data(bssid), ETH_ALEN);
9792
9793                         /* special attribute - old implementation w/a */
9794                         request->match_sets[i].rssi_thold = default_match_rssi;
9795                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9796                         if (rssi)
9797                                 request->match_sets[i].rssi_thold =
9798                                         nla_get_s32(rssi);
9799
9800                         /* Parse per band RSSI attribute */
9801                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9802                                 &request->match_sets[i],
9803                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9804                                 request->match_sets[i].rssi_thold);
9805                         if (err)
9806                                 goto out_free;
9807
9808                         i++;
9809                 }
9810
9811                 /* there was no other matchset, so the RSSI one is alone */
9812                 if (i == 0 && n_match_sets)
9813                         request->match_sets[0].rssi_thold = default_match_rssi;
9814
9815                 request->min_rssi_thold = INT_MAX;
9816                 for (i = 0; i < n_match_sets; i++)
9817                         request->min_rssi_thold =
9818                                 min(request->match_sets[i].rssi_thold,
9819                                     request->min_rssi_thold);
9820         } else {
9821                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9822         }
9823
9824         if (ie_len) {
9825                 request->ie_len = ie_len;
9826                 memcpy((void *)request->ie,
9827                        nla_data(attrs[NL80211_ATTR_IE]),
9828                        request->ie_len);
9829         }
9830
9831         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9832         if (err)
9833                 goto out_free;
9834
9835         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9836                 request->delay =
9837                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9838
9839         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9840                 request->relative_rssi = nla_get_s8(
9841                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9842                 request->relative_rssi_set = true;
9843         }
9844
9845         if (request->relative_rssi_set &&
9846             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9847                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9848
9849                 rssi_adjust = nla_data(
9850                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9851                 request->rssi_adjust.band = rssi_adjust->band;
9852                 request->rssi_adjust.delta = rssi_adjust->delta;
9853                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9854                         err = -EINVAL;
9855                         goto out_free;
9856                 }
9857         }
9858
9859         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9860         if (err)
9861                 goto out_free;
9862
9863         request->scan_start = jiffies;
9864
9865         return request;
9866
9867 out_free:
9868         kfree(request);
9869         return ERR_PTR(err);
9870 }
9871
9872 static int nl80211_start_sched_scan(struct sk_buff *skb,
9873                                     struct genl_info *info)
9874 {
9875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9876         struct net_device *dev = info->user_ptr[1];
9877         struct wireless_dev *wdev = dev->ieee80211_ptr;
9878         struct cfg80211_sched_scan_request *sched_scan_req;
9879         bool want_multi;
9880         int err;
9881
9882         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9883                 return -EOPNOTSUPP;
9884
9885         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9886         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9887         if (err)
9888                 return err;
9889
9890         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9891                                                   info->attrs,
9892                                                   rdev->wiphy.max_match_sets);
9893
9894         err = PTR_ERR_OR_ZERO(sched_scan_req);
9895         if (err)
9896                 goto out_err;
9897
9898         /* leave request id zero for legacy request
9899          * or if driver does not support multi-scheduled scan
9900          */
9901         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9902                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9903
9904         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9905         if (err)
9906                 goto out_free;
9907
9908         sched_scan_req->dev = dev;
9909         sched_scan_req->wiphy = &rdev->wiphy;
9910
9911         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9912                 sched_scan_req->owner_nlportid = info->snd_portid;
9913
9914         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9915
9916         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9917         return 0;
9918
9919 out_free:
9920         kfree(sched_scan_req);
9921 out_err:
9922         return err;
9923 }
9924
9925 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9926                                    struct genl_info *info)
9927 {
9928         struct cfg80211_sched_scan_request *req;
9929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9930         u64 cookie;
9931
9932         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9933                 return -EOPNOTSUPP;
9934
9935         if (info->attrs[NL80211_ATTR_COOKIE]) {
9936                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9937                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9938         }
9939
9940         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9941                                      struct cfg80211_sched_scan_request,
9942                                      list);
9943         if (!req || req->reqid ||
9944             (req->owner_nlportid &&
9945              req->owner_nlportid != info->snd_portid))
9946                 return -ENOENT;
9947
9948         return cfg80211_stop_sched_scan_req(rdev, req, false);
9949 }
9950
9951 static int nl80211_start_radar_detection(struct sk_buff *skb,
9952                                          struct genl_info *info)
9953 {
9954         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9955         struct net_device *dev = info->user_ptr[1];
9956         struct wireless_dev *wdev = dev->ieee80211_ptr;
9957         struct wiphy *wiphy = wdev->wiphy;
9958         struct cfg80211_chan_def chandef;
9959         enum nl80211_dfs_regions dfs_region;
9960         unsigned int cac_time_ms;
9961         int err = -EINVAL;
9962
9963         flush_delayed_work(&rdev->dfs_update_channels_wk);
9964
9965         wiphy_lock(wiphy);
9966
9967         dfs_region = reg_get_dfs_region(wiphy);
9968         if (dfs_region == NL80211_DFS_UNSET)
9969                 goto unlock;
9970
9971         err = nl80211_parse_chandef(rdev, info, &chandef);
9972         if (err)
9973                 goto unlock;
9974
9975         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9976         if (err < 0)
9977                 goto unlock;
9978
9979         if (err == 0) {
9980                 err = -EINVAL;
9981                 goto unlock;
9982         }
9983
9984         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9985                 err = -EINVAL;
9986                 goto unlock;
9987         }
9988
9989         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9990                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9991                                                                 &chandef);
9992                 goto unlock;
9993         }
9994
9995         if (netif_carrier_ok(dev)) {
9996                 err = -EBUSY;
9997                 goto unlock;
9998         }
9999
10000         if (wdev->cac_started) {
10001                 err = -EBUSY;
10002                 goto unlock;
10003         }
10004
10005         /* CAC start is offloaded to HW and can't be started manually */
10006         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
10007                 err = -EOPNOTSUPP;
10008                 goto unlock;
10009         }
10010
10011         if (!rdev->ops->start_radar_detection) {
10012                 err = -EOPNOTSUPP;
10013                 goto unlock;
10014         }
10015
10016         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
10017         if (WARN_ON(!cac_time_ms))
10018                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
10019
10020         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10021         if (!err) {
10022                 wdev->links[0].ap.chandef = chandef;
10023                 wdev->cac_started = true;
10024                 wdev->cac_start_time = jiffies;
10025                 wdev->cac_time_ms = cac_time_ms;
10026         }
10027 unlock:
10028         wiphy_unlock(wiphy);
10029
10030         return err;
10031 }
10032
10033 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10034                                           struct genl_info *info)
10035 {
10036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10037         struct net_device *dev = info->user_ptr[1];
10038         struct wireless_dev *wdev = dev->ieee80211_ptr;
10039         struct wiphy *wiphy = wdev->wiphy;
10040         struct cfg80211_chan_def chandef;
10041         enum nl80211_dfs_regions dfs_region;
10042         int err;
10043
10044         dfs_region = reg_get_dfs_region(wiphy);
10045         if (dfs_region == NL80211_DFS_UNSET) {
10046                 GENL_SET_ERR_MSG(info,
10047                                  "DFS Region is not set. Unexpected Radar indication");
10048                 return -EINVAL;
10049         }
10050
10051         err = nl80211_parse_chandef(rdev, info, &chandef);
10052         if (err) {
10053                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10054                 return err;
10055         }
10056
10057         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10058         if (err < 0) {
10059                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10060                 return err;
10061         }
10062
10063         if (err == 0) {
10064                 GENL_SET_ERR_MSG(info,
10065                                  "Unexpected Radar indication for chandef/iftype");
10066                 return -EINVAL;
10067         }
10068
10069         /* Do not process this notification if radar is already detected
10070          * by kernel on this channel, and return success.
10071          */
10072         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10073                 return 0;
10074
10075         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10076
10077         cfg80211_sched_dfs_chan_update(rdev);
10078
10079         rdev->radar_chandef = chandef;
10080
10081         /* Propagate this notification to other radios as well */
10082         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10083
10084         return 0;
10085 }
10086
10087 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10088 {
10089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10090         unsigned int link_id = nl80211_link_id(info->attrs);
10091         struct net_device *dev = info->user_ptr[1];
10092         struct wireless_dev *wdev = dev->ieee80211_ptr;
10093         struct cfg80211_csa_settings params;
10094         struct nlattr **csa_attrs = NULL;
10095         int err;
10096         bool need_new_beacon = false;
10097         bool need_handle_dfs_flag = true;
10098         int len, i;
10099         u32 cs_count;
10100
10101         if (!rdev->ops->channel_switch ||
10102             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10103                 return -EOPNOTSUPP;
10104
10105         switch (dev->ieee80211_ptr->iftype) {
10106         case NL80211_IFTYPE_AP:
10107         case NL80211_IFTYPE_P2P_GO:
10108                 need_new_beacon = true;
10109                 /* For all modes except AP the handle_dfs flag needs to be
10110                  * supplied to tell the kernel that userspace will handle radar
10111                  * events when they happen. Otherwise a switch to a channel
10112                  * requiring DFS will be rejected.
10113                  */
10114                 need_handle_dfs_flag = false;
10115
10116                 /* useless if AP is not running */
10117                 if (!wdev->links[link_id].ap.beacon_interval)
10118                         return -ENOTCONN;
10119                 break;
10120         case NL80211_IFTYPE_ADHOC:
10121                 if (!wdev->u.ibss.ssid_len)
10122                         return -ENOTCONN;
10123                 break;
10124         case NL80211_IFTYPE_MESH_POINT:
10125                 if (!wdev->u.mesh.id_len)
10126                         return -ENOTCONN;
10127                 break;
10128         default:
10129                 return -EOPNOTSUPP;
10130         }
10131
10132         memset(&params, 0, sizeof(params));
10133         params.beacon_csa.ftm_responder = -1;
10134
10135         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10136             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10137                 return -EINVAL;
10138
10139         /* only important for AP, IBSS and mesh create IEs internally */
10140         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10141                 return -EINVAL;
10142
10143         /* Even though the attribute is u32, the specification says
10144          * u8, so let's make sure we don't overflow.
10145          */
10146         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10147         if (cs_count > 255)
10148                 return -EINVAL;
10149
10150         params.count = cs_count;
10151
10152         if (!need_new_beacon)
10153                 goto skip_beacons;
10154
10155         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10156                                    info->extack);
10157         if (err)
10158                 goto free;
10159
10160         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10161                             GFP_KERNEL);
10162         if (!csa_attrs) {
10163                 err = -ENOMEM;
10164                 goto free;
10165         }
10166
10167         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10168                                           info->attrs[NL80211_ATTR_CSA_IES],
10169                                           nl80211_policy, info->extack);
10170         if (err)
10171                 goto free;
10172
10173         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10174                                    info->extack);
10175         if (err)
10176                 goto free;
10177
10178         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10179                 err = -EINVAL;
10180                 goto free;
10181         }
10182
10183         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10184         if (!len || (len % sizeof(u16))) {
10185                 err = -EINVAL;
10186                 goto free;
10187         }
10188
10189         params.n_counter_offsets_beacon = len / sizeof(u16);
10190         if (rdev->wiphy.max_num_csa_counters &&
10191             (params.n_counter_offsets_beacon >
10192              rdev->wiphy.max_num_csa_counters)) {
10193                 err = -EINVAL;
10194                 goto free;
10195         }
10196
10197         params.counter_offsets_beacon =
10198                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10199
10200         /* sanity checks - counters should fit and be the same */
10201         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10202                 u16 offset = params.counter_offsets_beacon[i];
10203
10204                 if (offset >= params.beacon_csa.tail_len) {
10205                         err = -EINVAL;
10206                         goto free;
10207                 }
10208
10209                 if (params.beacon_csa.tail[offset] != params.count) {
10210                         err = -EINVAL;
10211                         goto free;
10212                 }
10213         }
10214
10215         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10216                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10217                 if (!len || (len % sizeof(u16))) {
10218                         err = -EINVAL;
10219                         goto free;
10220                 }
10221
10222                 params.n_counter_offsets_presp = len / sizeof(u16);
10223                 if (rdev->wiphy.max_num_csa_counters &&
10224                     (params.n_counter_offsets_presp >
10225                      rdev->wiphy.max_num_csa_counters)) {
10226                         err = -EINVAL;
10227                         goto free;
10228                 }
10229
10230                 params.counter_offsets_presp =
10231                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10232
10233                 /* sanity checks - counters should fit and be the same */
10234                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10235                         u16 offset = params.counter_offsets_presp[i];
10236
10237                         if (offset >= params.beacon_csa.probe_resp_len) {
10238                                 err = -EINVAL;
10239                                 goto free;
10240                         }
10241
10242                         if (params.beacon_csa.probe_resp[offset] !=
10243                             params.count) {
10244                                 err = -EINVAL;
10245                                 goto free;
10246                         }
10247                 }
10248         }
10249
10250 skip_beacons:
10251         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10252         if (err)
10253                 goto free;
10254
10255         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10256                                            wdev->iftype)) {
10257                 err = -EINVAL;
10258                 goto free;
10259         }
10260
10261         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10262                                             &params.chandef,
10263                                             wdev->iftype);
10264         if (err < 0)
10265                 goto free;
10266
10267         if (err > 0) {
10268                 params.radar_required = true;
10269                 if (need_handle_dfs_flag &&
10270                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10271                         err = -EINVAL;
10272                         goto free;
10273                 }
10274         }
10275
10276         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10277                 params.block_tx = true;
10278
10279         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10280                 err = nl80211_parse_punct_bitmap(rdev, info,
10281                                                  &params.chandef,
10282                                                  &params.punct_bitmap);
10283                 if (err)
10284                         goto free;
10285         }
10286
10287         wdev_lock(wdev);
10288         err = rdev_channel_switch(rdev, dev, &params);
10289         wdev_unlock(wdev);
10290
10291 free:
10292         kfree(params.beacon_after.mbssid_ies);
10293         kfree(params.beacon_csa.mbssid_ies);
10294         kfree(params.beacon_after.rnr_ies);
10295         kfree(params.beacon_csa.rnr_ies);
10296         kfree(csa_attrs);
10297         return err;
10298 }
10299
10300 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10301                             u32 seq, int flags,
10302                             struct cfg80211_registered_device *rdev,
10303                             struct wireless_dev *wdev,
10304                             struct cfg80211_internal_bss *intbss)
10305 {
10306         struct cfg80211_bss *res = &intbss->pub;
10307         const struct cfg80211_bss_ies *ies;
10308         unsigned int link_id;
10309         void *hdr;
10310         struct nlattr *bss;
10311
10312         ASSERT_WDEV_LOCK(wdev);
10313
10314         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10315                              NL80211_CMD_NEW_SCAN_RESULTS);
10316         if (!hdr)
10317                 return -1;
10318
10319         genl_dump_check_consistent(cb, hdr);
10320
10321         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10322                 goto nla_put_failure;
10323         if (wdev->netdev &&
10324             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10325                 goto nla_put_failure;
10326         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10327                               NL80211_ATTR_PAD))
10328                 goto nla_put_failure;
10329
10330         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10331         if (!bss)
10332                 goto nla_put_failure;
10333         if ((!is_zero_ether_addr(res->bssid) &&
10334              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10335                 goto nla_put_failure;
10336
10337         rcu_read_lock();
10338         /* indicate whether we have probe response data or not */
10339         if (rcu_access_pointer(res->proberesp_ies) &&
10340             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10341                 goto fail_unlock_rcu;
10342
10343         /* this pointer prefers to be pointed to probe response data
10344          * but is always valid
10345          */
10346         ies = rcu_dereference(res->ies);
10347         if (ies) {
10348                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10349                                       NL80211_BSS_PAD))
10350                         goto fail_unlock_rcu;
10351                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10352                                         ies->len, ies->data))
10353                         goto fail_unlock_rcu;
10354         }
10355
10356         /* and this pointer is always (unless driver didn't know) beacon data */
10357         ies = rcu_dereference(res->beacon_ies);
10358         if (ies && ies->from_beacon) {
10359                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10360                                       NL80211_BSS_PAD))
10361                         goto fail_unlock_rcu;
10362                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10363                                         ies->len, ies->data))
10364                         goto fail_unlock_rcu;
10365         }
10366         rcu_read_unlock();
10367
10368         if (res->beacon_interval &&
10369             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10370                 goto nla_put_failure;
10371         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10372             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10373             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10374                         res->channel->freq_offset) ||
10375             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10376             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10377                         jiffies_to_msecs(jiffies - intbss->ts)))
10378                 goto nla_put_failure;
10379
10380         if (intbss->parent_tsf &&
10381             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10382                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10383              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10384                      intbss->parent_bssid)))
10385                 goto nla_put_failure;
10386
10387         if (intbss->ts_boottime &&
10388             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10389                               intbss->ts_boottime, NL80211_BSS_PAD))
10390                 goto nla_put_failure;
10391
10392         if (!nl80211_put_signal(msg, intbss->pub.chains,
10393                                 intbss->pub.chain_signal,
10394                                 NL80211_BSS_CHAIN_SIGNAL))
10395                 goto nla_put_failure;
10396
10397         switch (rdev->wiphy.signal_type) {
10398         case CFG80211_SIGNAL_TYPE_MBM:
10399                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10400                         goto nla_put_failure;
10401                 break;
10402         case CFG80211_SIGNAL_TYPE_UNSPEC:
10403                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10404                         goto nla_put_failure;
10405                 break;
10406         default:
10407                 break;
10408         }
10409
10410         switch (wdev->iftype) {
10411         case NL80211_IFTYPE_P2P_CLIENT:
10412         case NL80211_IFTYPE_STATION:
10413                 for_each_valid_link(wdev, link_id) {
10414                         if (intbss == wdev->links[link_id].client.current_bss &&
10415                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10416                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10417                              (wdev->valid_links &&
10418                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10419                                           link_id) ||
10420                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10421                                        wdev->u.client.connected_addr)))))
10422                                 goto nla_put_failure;
10423                 }
10424                 break;
10425         case NL80211_IFTYPE_ADHOC:
10426                 if (intbss == wdev->u.ibss.current_bss &&
10427                     nla_put_u32(msg, NL80211_BSS_STATUS,
10428                                 NL80211_BSS_STATUS_IBSS_JOINED))
10429                         goto nla_put_failure;
10430                 break;
10431         default:
10432                 break;
10433         }
10434
10435         nla_nest_end(msg, bss);
10436
10437         genlmsg_end(msg, hdr);
10438         return 0;
10439
10440  fail_unlock_rcu:
10441         rcu_read_unlock();
10442  nla_put_failure:
10443         genlmsg_cancel(msg, hdr);
10444         return -EMSGSIZE;
10445 }
10446
10447 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10448 {
10449         struct cfg80211_registered_device *rdev;
10450         struct cfg80211_internal_bss *scan;
10451         struct wireless_dev *wdev;
10452         int start = cb->args[2], idx = 0;
10453         int err;
10454
10455         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10456         if (err)
10457                 return err;
10458         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10459         __acquire(&rdev->wiphy.mtx);
10460
10461         wdev_lock(wdev);
10462         spin_lock_bh(&rdev->bss_lock);
10463
10464         /*
10465          * dump_scan will be called multiple times to break up the scan results
10466          * into multiple messages.  It is unlikely that any more bss-es will be
10467          * expired after the first call, so only call only call this on the
10468          * first dump_scan invocation.
10469          */
10470         if (start == 0)
10471                 cfg80211_bss_expire(rdev);
10472
10473         cb->seq = rdev->bss_generation;
10474
10475         list_for_each_entry(scan, &rdev->bss_list, list) {
10476                 if (++idx <= start)
10477                         continue;
10478                 if (nl80211_send_bss(skb, cb,
10479                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10480                                 rdev, wdev, scan) < 0) {
10481                         idx--;
10482                         break;
10483                 }
10484         }
10485
10486         spin_unlock_bh(&rdev->bss_lock);
10487         wdev_unlock(wdev);
10488
10489         cb->args[2] = idx;
10490         wiphy_unlock(&rdev->wiphy);
10491
10492         return skb->len;
10493 }
10494
10495 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10496                                int flags, struct net_device *dev,
10497                                bool allow_radio_stats,
10498                                struct survey_info *survey)
10499 {
10500         void *hdr;
10501         struct nlattr *infoattr;
10502
10503         /* skip radio stats if userspace didn't request them */
10504         if (!survey->channel && !allow_radio_stats)
10505                 return 0;
10506
10507         hdr = nl80211hdr_put(msg, portid, seq, flags,
10508                              NL80211_CMD_NEW_SURVEY_RESULTS);
10509         if (!hdr)
10510                 return -ENOMEM;
10511
10512         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10513                 goto nla_put_failure;
10514
10515         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10516         if (!infoattr)
10517                 goto nla_put_failure;
10518
10519         if (survey->channel &&
10520             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10521                         survey->channel->center_freq))
10522                 goto nla_put_failure;
10523
10524         if (survey->channel && survey->channel->freq_offset &&
10525             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10526                         survey->channel->freq_offset))
10527                 goto nla_put_failure;
10528
10529         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10530             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10531                 goto nla_put_failure;
10532         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10533             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10534                 goto nla_put_failure;
10535         if ((survey->filled & SURVEY_INFO_TIME) &&
10536             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10537                         survey->time, NL80211_SURVEY_INFO_PAD))
10538                 goto nla_put_failure;
10539         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10540             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10541                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10542                 goto nla_put_failure;
10543         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10544             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10545                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10546                 goto nla_put_failure;
10547         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10548             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10549                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10550                 goto nla_put_failure;
10551         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10552             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10553                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10554                 goto nla_put_failure;
10555         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10556             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10557                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10558                 goto nla_put_failure;
10559         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10560             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10561                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10562                 goto nla_put_failure;
10563
10564         nla_nest_end(msg, infoattr);
10565
10566         genlmsg_end(msg, hdr);
10567         return 0;
10568
10569  nla_put_failure:
10570         genlmsg_cancel(msg, hdr);
10571         return -EMSGSIZE;
10572 }
10573
10574 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10575 {
10576         struct nlattr **attrbuf;
10577         struct survey_info survey;
10578         struct cfg80211_registered_device *rdev;
10579         struct wireless_dev *wdev;
10580         int survey_idx = cb->args[2];
10581         int res;
10582         bool radio_stats;
10583
10584         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10585         if (!attrbuf)
10586                 return -ENOMEM;
10587
10588         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10589         if (res) {
10590                 kfree(attrbuf);
10591                 return res;
10592         }
10593         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10594         __acquire(&rdev->wiphy.mtx);
10595
10596         /* prepare_wdev_dump parsed the attributes */
10597         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10598
10599         if (!wdev->netdev) {
10600                 res = -EINVAL;
10601                 goto out_err;
10602         }
10603
10604         if (!rdev->ops->dump_survey) {
10605                 res = -EOPNOTSUPP;
10606                 goto out_err;
10607         }
10608
10609         while (1) {
10610                 wdev_lock(wdev);
10611                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10612                 wdev_unlock(wdev);
10613                 if (res == -ENOENT)
10614                         break;
10615                 if (res)
10616                         goto out_err;
10617
10618                 /* don't send disabled channels, but do send non-channel data */
10619                 if (survey.channel &&
10620                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10621                         survey_idx++;
10622                         continue;
10623                 }
10624
10625                 if (nl80211_send_survey(skb,
10626                                 NETLINK_CB(cb->skb).portid,
10627                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10628                                 wdev->netdev, radio_stats, &survey) < 0)
10629                         goto out;
10630                 survey_idx++;
10631         }
10632
10633  out:
10634         cb->args[2] = survey_idx;
10635         res = skb->len;
10636  out_err:
10637         kfree(attrbuf);
10638         wiphy_unlock(&rdev->wiphy);
10639         return res;
10640 }
10641
10642 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10643 {
10644         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10645                                   NL80211_WPA_VERSION_2 |
10646                                   NL80211_WPA_VERSION_3));
10647 }
10648
10649 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10650 {
10651         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10652         struct net_device *dev = info->user_ptr[1];
10653         struct ieee80211_channel *chan;
10654         const u8 *bssid, *ssid;
10655         int err, ssid_len;
10656         enum nl80211_auth_type auth_type;
10657         struct key_parse key;
10658         bool local_state_change;
10659         struct cfg80211_auth_request req = {};
10660         u32 freq;
10661
10662         if (!info->attrs[NL80211_ATTR_MAC])
10663                 return -EINVAL;
10664
10665         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10666                 return -EINVAL;
10667
10668         if (!info->attrs[NL80211_ATTR_SSID])
10669                 return -EINVAL;
10670
10671         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10672                 return -EINVAL;
10673
10674         err = nl80211_parse_key(info, &key);
10675         if (err)
10676                 return err;
10677
10678         if (key.idx >= 0) {
10679                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10680                         return -EINVAL;
10681                 if (!key.p.key || !key.p.key_len)
10682                         return -EINVAL;
10683                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10684                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10685                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10686                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10687                         return -EINVAL;
10688                 if (key.idx > 3)
10689                         return -EINVAL;
10690         } else {
10691                 key.p.key_len = 0;
10692                 key.p.key = NULL;
10693         }
10694
10695         if (key.idx >= 0) {
10696                 int i;
10697                 bool ok = false;
10698
10699                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10700                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10701                                 ok = true;
10702                                 break;
10703                         }
10704                 }
10705                 if (!ok)
10706                         return -EINVAL;
10707         }
10708
10709         if (!rdev->ops->auth)
10710                 return -EOPNOTSUPP;
10711
10712         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10713             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10714                 return -EOPNOTSUPP;
10715
10716         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10717         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10718         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10719                 freq +=
10720                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10721
10722         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10723         if (!chan)
10724                 return -EINVAL;
10725
10726         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10727         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10728
10729         if (info->attrs[NL80211_ATTR_IE]) {
10730                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10731                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10732         }
10733
10734         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10735         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10736                 return -EINVAL;
10737
10738         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10739              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10740              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10741              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10742             !info->attrs[NL80211_ATTR_AUTH_DATA])
10743                 return -EINVAL;
10744
10745         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10746                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10747                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10748                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10749                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10750                         return -EINVAL;
10751                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10752                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10753         }
10754
10755         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10756
10757         /*
10758          * Since we no longer track auth state, ignore
10759          * requests to only change local state.
10760          */
10761         if (local_state_change)
10762                 return 0;
10763
10764         req.auth_type = auth_type;
10765         req.key = key.p.key;
10766         req.key_len = key.p.key_len;
10767         req.key_idx = key.idx;
10768         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10769         if (req.link_id >= 0) {
10770                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10771                         return -EINVAL;
10772                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10773                         return -EINVAL;
10774                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10775                 if (!is_valid_ether_addr(req.ap_mld_addr))
10776                         return -EINVAL;
10777         }
10778
10779         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10780                                    IEEE80211_BSS_TYPE_ESS,
10781                                    IEEE80211_PRIVACY_ANY);
10782         if (!req.bss)
10783                 return -ENOENT;
10784
10785         wdev_lock(dev->ieee80211_ptr);
10786         err = cfg80211_mlme_auth(rdev, dev, &req);
10787         wdev_unlock(dev->ieee80211_ptr);
10788
10789         cfg80211_put_bss(&rdev->wiphy, req.bss);
10790
10791         return err;
10792 }
10793
10794 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10795                                      struct genl_info *info)
10796 {
10797         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10798                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10799                 return -EINVAL;
10800         }
10801
10802         if (!rdev->ops->tx_control_port ||
10803             !wiphy_ext_feature_isset(&rdev->wiphy,
10804                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10805                 return -EOPNOTSUPP;
10806
10807         return 0;
10808 }
10809
10810 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10811                                    struct genl_info *info,
10812                                    struct cfg80211_crypto_settings *settings,
10813                                    int cipher_limit)
10814 {
10815         memset(settings, 0, sizeof(*settings));
10816
10817         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10818
10819         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10820                 u16 proto;
10821
10822                 proto = nla_get_u16(
10823                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10824                 settings->control_port_ethertype = cpu_to_be16(proto);
10825                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10826                     proto != ETH_P_PAE)
10827                         return -EINVAL;
10828                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10829                         settings->control_port_no_encrypt = true;
10830         } else
10831                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10832
10833         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10834                 int r = validate_pae_over_nl80211(rdev, info);
10835
10836                 if (r < 0)
10837                         return r;
10838
10839                 settings->control_port_over_nl80211 = true;
10840
10841                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10842                         settings->control_port_no_preauth = true;
10843         }
10844
10845         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10846                 void *data;
10847                 int len, i;
10848
10849                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10850                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10851                 settings->n_ciphers_pairwise = len / sizeof(u32);
10852
10853                 if (len % sizeof(u32))
10854                         return -EINVAL;
10855
10856                 if (settings->n_ciphers_pairwise > cipher_limit)
10857                         return -EINVAL;
10858
10859                 memcpy(settings->ciphers_pairwise, data, len);
10860
10861                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10862                         if (!cfg80211_supported_cipher_suite(
10863                                         &rdev->wiphy,
10864                                         settings->ciphers_pairwise[i]))
10865                                 return -EINVAL;
10866         }
10867
10868         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10869                 settings->cipher_group =
10870                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10871                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10872                                                      settings->cipher_group))
10873                         return -EINVAL;
10874         }
10875
10876         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10877                 settings->wpa_versions =
10878                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10879                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10880                         return -EINVAL;
10881         }
10882
10883         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10884                 void *data;
10885                 int len;
10886
10887                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10888                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10889                 settings->n_akm_suites = len / sizeof(u32);
10890
10891                 if (len % sizeof(u32))
10892                         return -EINVAL;
10893
10894                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10895                         return -EINVAL;
10896
10897                 memcpy(settings->akm_suites, data, len);
10898         }
10899
10900         if (info->attrs[NL80211_ATTR_PMK]) {
10901                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10902                         return -EINVAL;
10903                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10904                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10905                     !wiphy_ext_feature_isset(&rdev->wiphy,
10906                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10907                         return -EINVAL;
10908                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10909         }
10910
10911         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10912                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10913                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10914                     !wiphy_ext_feature_isset(&rdev->wiphy,
10915                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10916                         return -EINVAL;
10917                 settings->sae_pwd =
10918                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10919                 settings->sae_pwd_len =
10920                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10921         }
10922
10923         if (info->attrs[NL80211_ATTR_SAE_PWE])
10924                 settings->sae_pwe =
10925                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10926         else
10927                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10928
10929         return 0;
10930 }
10931
10932 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10933                                               const u8 *ssid, int ssid_len,
10934                                               struct nlattr **attrs)
10935 {
10936         struct ieee80211_channel *chan;
10937         struct cfg80211_bss *bss;
10938         const u8 *bssid;
10939         u32 freq;
10940
10941         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10942                 return ERR_PTR(-EINVAL);
10943
10944         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10945
10946         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10947         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10948                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10949
10950         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10951         if (!chan)
10952                 return ERR_PTR(-EINVAL);
10953
10954         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10955                                ssid, ssid_len,
10956                                IEEE80211_BSS_TYPE_ESS,
10957                                IEEE80211_PRIVACY_ANY);
10958         if (!bss)
10959                 return ERR_PTR(-ENOENT);
10960
10961         return bss;
10962 }
10963
10964 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10965 {
10966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10967         struct net_device *dev = info->user_ptr[1];
10968         struct cfg80211_assoc_request req = {};
10969         struct nlattr **attrs = NULL;
10970         const u8 *ap_addr, *ssid;
10971         unsigned int link_id;
10972         int err, ssid_len;
10973
10974         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10975             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10976                 return -EPERM;
10977
10978         if (!info->attrs[NL80211_ATTR_SSID])
10979                 return -EINVAL;
10980
10981         if (!rdev->ops->assoc)
10982                 return -EOPNOTSUPP;
10983
10984         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10985             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10986                 return -EOPNOTSUPP;
10987
10988         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10989         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10990
10991         if (info->attrs[NL80211_ATTR_IE]) {
10992                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10993                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10994
10995                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10996                                            req.ie, req.ie_len)) {
10997                         GENL_SET_ERR_MSG(info,
10998                                          "non-inheritance makes no sense");
10999                         return -EINVAL;
11000                 }
11001         }
11002
11003         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11004                 enum nl80211_mfp mfp =
11005                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11006                 if (mfp == NL80211_MFP_REQUIRED)
11007                         req.use_mfp = true;
11008                 else if (mfp != NL80211_MFP_NO)
11009                         return -EINVAL;
11010         }
11011
11012         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11013                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11014
11015         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11016                 req.flags |= ASSOC_REQ_DISABLE_HT;
11017
11018         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11019                 memcpy(&req.ht_capa_mask,
11020                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11021                        sizeof(req.ht_capa_mask));
11022
11023         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11024                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11025                         return -EINVAL;
11026                 memcpy(&req.ht_capa,
11027                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11028                        sizeof(req.ht_capa));
11029         }
11030
11031         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11032                 req.flags |= ASSOC_REQ_DISABLE_VHT;
11033
11034         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11035                 req.flags |= ASSOC_REQ_DISABLE_HE;
11036
11037         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11038                 req.flags |= ASSOC_REQ_DISABLE_EHT;
11039
11040         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11041                 memcpy(&req.vht_capa_mask,
11042                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11043                        sizeof(req.vht_capa_mask));
11044
11045         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11046                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11047                         return -EINVAL;
11048                 memcpy(&req.vht_capa,
11049                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11050                        sizeof(req.vht_capa));
11051         }
11052
11053         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11054                 if (!((rdev->wiphy.features &
11055                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11056                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11057                     !wiphy_ext_feature_isset(&rdev->wiphy,
11058                                              NL80211_EXT_FEATURE_RRM))
11059                         return -EINVAL;
11060                 req.flags |= ASSOC_REQ_USE_RRM;
11061         }
11062
11063         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11064                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11065                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11066                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11067                         return -EINVAL;
11068                 req.fils_nonces =
11069                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11070         }
11071
11072         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11073                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11074                         return -EINVAL;
11075                 memcpy(&req.s1g_capa_mask,
11076                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11077                        sizeof(req.s1g_capa_mask));
11078         }
11079
11080         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11081                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11082                         return -EINVAL;
11083                 memcpy(&req.s1g_capa,
11084                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11085                        sizeof(req.s1g_capa));
11086         }
11087
11088         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11089
11090         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11091                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11092                 struct nlattr *link;
11093                 int rem = 0;
11094
11095                 if (req.link_id < 0)
11096                         return -EINVAL;
11097
11098                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11099                         return -EINVAL;
11100
11101                 if (info->attrs[NL80211_ATTR_MAC] ||
11102                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11103                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11104                         return -EINVAL;
11105
11106                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11107                 ap_addr = req.ap_mld_addr;
11108
11109                 attrs = kzalloc(attrsize, GFP_KERNEL);
11110                 if (!attrs)
11111                         return -ENOMEM;
11112
11113                 nla_for_each_nested(link,
11114                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11115                                     rem) {
11116                         memset(attrs, 0, attrsize);
11117
11118                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11119                                          link, NULL, NULL);
11120
11121                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11122                                 err = -EINVAL;
11123                                 goto free;
11124                         }
11125
11126                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11127                         /* cannot use the same link ID again */
11128                         if (req.links[link_id].bss) {
11129                                 err = -EINVAL;
11130                                 goto free;
11131                         }
11132                         req.links[link_id].bss =
11133                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
11134                         if (IS_ERR(req.links[link_id].bss)) {
11135                                 err = PTR_ERR(req.links[link_id].bss);
11136                                 req.links[link_id].bss = NULL;
11137                                 goto free;
11138                         }
11139
11140                         if (attrs[NL80211_ATTR_IE]) {
11141                                 req.links[link_id].elems =
11142                                         nla_data(attrs[NL80211_ATTR_IE]);
11143                                 req.links[link_id].elems_len =
11144                                         nla_len(attrs[NL80211_ATTR_IE]);
11145
11146                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11147                                                        req.links[link_id].elems,
11148                                                        req.links[link_id].elems_len)) {
11149                                         GENL_SET_ERR_MSG(info,
11150                                                          "cannot deal with fragmentation");
11151                                         err = -EINVAL;
11152                                         goto free;
11153                                 }
11154
11155                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11156                                                            req.links[link_id].elems,
11157                                                            req.links[link_id].elems_len)) {
11158                                         GENL_SET_ERR_MSG(info,
11159                                                          "cannot deal with non-inheritance");
11160                                         err = -EINVAL;
11161                                         goto free;
11162                                 }
11163                         }
11164
11165                         req.links[link_id].disabled =
11166                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11167                 }
11168
11169                 if (!req.links[req.link_id].bss) {
11170                         err = -EINVAL;
11171                         goto free;
11172                 }
11173
11174                 if (req.links[req.link_id].elems_len) {
11175                         GENL_SET_ERR_MSG(info,
11176                                          "cannot have per-link elems on assoc link");
11177                         err = -EINVAL;
11178                         goto free;
11179                 }
11180
11181                 if (req.links[req.link_id].disabled) {
11182                         GENL_SET_ERR_MSG(info,
11183                                          "cannot have assoc link disabled");
11184                         err = -EINVAL;
11185                         goto free;
11186                 }
11187
11188                 kfree(attrs);
11189                 attrs = NULL;
11190         } else {
11191                 if (req.link_id >= 0)
11192                         return -EINVAL;
11193
11194                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
11195                 if (IS_ERR(req.bss))
11196                         return PTR_ERR(req.bss);
11197                 ap_addr = req.bss->bssid;
11198         }
11199
11200         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11201         if (!err) {
11202                 wdev_lock(dev->ieee80211_ptr);
11203
11204                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11205
11206                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11207                         dev->ieee80211_ptr->conn_owner_nlportid =
11208                                 info->snd_portid;
11209                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11210                                ap_addr, ETH_ALEN);
11211                 }
11212
11213                 wdev_unlock(dev->ieee80211_ptr);
11214         }
11215
11216 free:
11217         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11218                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11219         cfg80211_put_bss(&rdev->wiphy, req.bss);
11220         kfree(attrs);
11221
11222         return err;
11223 }
11224
11225 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11226 {
11227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11228         struct net_device *dev = info->user_ptr[1];
11229         const u8 *ie = NULL, *bssid;
11230         int ie_len = 0, err;
11231         u16 reason_code;
11232         bool local_state_change;
11233
11234         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11235             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11236                 return -EPERM;
11237
11238         if (!info->attrs[NL80211_ATTR_MAC])
11239                 return -EINVAL;
11240
11241         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11242                 return -EINVAL;
11243
11244         if (!rdev->ops->deauth)
11245                 return -EOPNOTSUPP;
11246
11247         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11248             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11249                 return -EOPNOTSUPP;
11250
11251         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11252
11253         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11254         if (reason_code == 0) {
11255                 /* Reason Code 0 is reserved */
11256                 return -EINVAL;
11257         }
11258
11259         if (info->attrs[NL80211_ATTR_IE]) {
11260                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11261                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11262         }
11263
11264         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11265
11266         wdev_lock(dev->ieee80211_ptr);
11267         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11268                                    local_state_change);
11269         wdev_unlock(dev->ieee80211_ptr);
11270         return err;
11271 }
11272
11273 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11274 {
11275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11276         struct net_device *dev = info->user_ptr[1];
11277         const u8 *ie = NULL, *bssid;
11278         int ie_len = 0, err;
11279         u16 reason_code;
11280         bool local_state_change;
11281
11282         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11283             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11284                 return -EPERM;
11285
11286         if (!info->attrs[NL80211_ATTR_MAC])
11287                 return -EINVAL;
11288
11289         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11290                 return -EINVAL;
11291
11292         if (!rdev->ops->disassoc)
11293                 return -EOPNOTSUPP;
11294
11295         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11296             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11297                 return -EOPNOTSUPP;
11298
11299         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11300
11301         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11302         if (reason_code == 0) {
11303                 /* Reason Code 0 is reserved */
11304                 return -EINVAL;
11305         }
11306
11307         if (info->attrs[NL80211_ATTR_IE]) {
11308                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11309                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11310         }
11311
11312         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11313
11314         wdev_lock(dev->ieee80211_ptr);
11315         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11316                                      local_state_change);
11317         wdev_unlock(dev->ieee80211_ptr);
11318         return err;
11319 }
11320
11321 static bool
11322 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11323                          int mcast_rate[NUM_NL80211_BANDS],
11324                          int rateval)
11325 {
11326         struct wiphy *wiphy = &rdev->wiphy;
11327         bool found = false;
11328         int band, i;
11329
11330         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11331                 struct ieee80211_supported_band *sband;
11332
11333                 sband = wiphy->bands[band];
11334                 if (!sband)
11335                         continue;
11336
11337                 for (i = 0; i < sband->n_bitrates; i++) {
11338                         if (sband->bitrates[i].bitrate == rateval) {
11339                                 mcast_rate[band] = i + 1;
11340                                 found = true;
11341                                 break;
11342                         }
11343                 }
11344         }
11345
11346         return found;
11347 }
11348
11349 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11350 {
11351         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11352         struct net_device *dev = info->user_ptr[1];
11353         struct cfg80211_ibss_params ibss;
11354         struct wiphy *wiphy;
11355         struct cfg80211_cached_keys *connkeys = NULL;
11356         int err;
11357
11358         memset(&ibss, 0, sizeof(ibss));
11359
11360         if (!info->attrs[NL80211_ATTR_SSID] ||
11361             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11362                 return -EINVAL;
11363
11364         ibss.beacon_interval = 100;
11365
11366         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11367                 ibss.beacon_interval =
11368                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11369
11370         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11371                                            ibss.beacon_interval);
11372         if (err)
11373                 return err;
11374
11375         if (!rdev->ops->join_ibss)
11376                 return -EOPNOTSUPP;
11377
11378         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11379                 return -EOPNOTSUPP;
11380
11381         wiphy = &rdev->wiphy;
11382
11383         if (info->attrs[NL80211_ATTR_MAC]) {
11384                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11385
11386                 if (!is_valid_ether_addr(ibss.bssid))
11387                         return -EINVAL;
11388         }
11389         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11390         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11391
11392         if (info->attrs[NL80211_ATTR_IE]) {
11393                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11394                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11395         }
11396
11397         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11398         if (err)
11399                 return err;
11400
11401         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11402                                      NL80211_IFTYPE_ADHOC))
11403                 return -EINVAL;
11404
11405         switch (ibss.chandef.width) {
11406         case NL80211_CHAN_WIDTH_5:
11407         case NL80211_CHAN_WIDTH_10:
11408         case NL80211_CHAN_WIDTH_20_NOHT:
11409                 break;
11410         case NL80211_CHAN_WIDTH_20:
11411         case NL80211_CHAN_WIDTH_40:
11412                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11413                         return -EINVAL;
11414                 break;
11415         case NL80211_CHAN_WIDTH_80:
11416         case NL80211_CHAN_WIDTH_80P80:
11417         case NL80211_CHAN_WIDTH_160:
11418                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11419                         return -EINVAL;
11420                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11421                                              NL80211_EXT_FEATURE_VHT_IBSS))
11422                         return -EINVAL;
11423                 break;
11424         case NL80211_CHAN_WIDTH_320:
11425                 return -EINVAL;
11426         default:
11427                 return -EINVAL;
11428         }
11429
11430         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11431         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11432
11433         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11434                 u8 *rates =
11435                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11436                 int n_rates =
11437                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11438                 struct ieee80211_supported_band *sband =
11439                         wiphy->bands[ibss.chandef.chan->band];
11440
11441                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11442                                              &ibss.basic_rates);
11443                 if (err)
11444                         return err;
11445         }
11446
11447         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11448                 memcpy(&ibss.ht_capa_mask,
11449                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11450                        sizeof(ibss.ht_capa_mask));
11451
11452         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11453                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11454                         return -EINVAL;
11455                 memcpy(&ibss.ht_capa,
11456                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11457                        sizeof(ibss.ht_capa));
11458         }
11459
11460         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11461             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11462                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11463                 return -EINVAL;
11464
11465         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11466                 bool no_ht = false;
11467
11468                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11469                 if (IS_ERR(connkeys))
11470                         return PTR_ERR(connkeys);
11471
11472                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11473                     no_ht) {
11474                         kfree_sensitive(connkeys);
11475                         return -EINVAL;
11476                 }
11477         }
11478
11479         ibss.control_port =
11480                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11481
11482         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11483                 int r = validate_pae_over_nl80211(rdev, info);
11484
11485                 if (r < 0) {
11486                         kfree_sensitive(connkeys);
11487                         return r;
11488                 }
11489
11490                 ibss.control_port_over_nl80211 = true;
11491         }
11492
11493         ibss.userspace_handles_dfs =
11494                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11495
11496         wdev_lock(dev->ieee80211_ptr);
11497         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11498         if (err)
11499                 kfree_sensitive(connkeys);
11500         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11501                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11502         wdev_unlock(dev->ieee80211_ptr);
11503
11504         return err;
11505 }
11506
11507 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11508 {
11509         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11510         struct net_device *dev = info->user_ptr[1];
11511
11512         if (!rdev->ops->leave_ibss)
11513                 return -EOPNOTSUPP;
11514
11515         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11516                 return -EOPNOTSUPP;
11517
11518         return cfg80211_leave_ibss(rdev, dev, false);
11519 }
11520
11521 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11522 {
11523         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11524         struct net_device *dev = info->user_ptr[1];
11525         int mcast_rate[NUM_NL80211_BANDS];
11526         u32 nla_rate;
11527
11528         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11529             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11530             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11531                 return -EOPNOTSUPP;
11532
11533         if (!rdev->ops->set_mcast_rate)
11534                 return -EOPNOTSUPP;
11535
11536         memset(mcast_rate, 0, sizeof(mcast_rate));
11537
11538         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11539                 return -EINVAL;
11540
11541         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11542         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11543                 return -EINVAL;
11544
11545         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11546 }
11547
11548 static struct sk_buff *
11549 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11550                             struct wireless_dev *wdev, int approxlen,
11551                             u32 portid, u32 seq, enum nl80211_commands cmd,
11552                             enum nl80211_attrs attr,
11553                             const struct nl80211_vendor_cmd_info *info,
11554                             gfp_t gfp)
11555 {
11556         struct sk_buff *skb;
11557         void *hdr;
11558         struct nlattr *data;
11559
11560         skb = nlmsg_new(approxlen + 100, gfp);
11561         if (!skb)
11562                 return NULL;
11563
11564         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11565         if (!hdr) {
11566                 kfree_skb(skb);
11567                 return NULL;
11568         }
11569
11570         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11571                 goto nla_put_failure;
11572
11573         if (info) {
11574                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11575                                 info->vendor_id))
11576                         goto nla_put_failure;
11577                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11578                                 info->subcmd))
11579                         goto nla_put_failure;
11580         }
11581
11582         if (wdev) {
11583                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11584                                       wdev_id(wdev), NL80211_ATTR_PAD))
11585                         goto nla_put_failure;
11586                 if (wdev->netdev &&
11587                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11588                                 wdev->netdev->ifindex))
11589                         goto nla_put_failure;
11590         }
11591
11592         data = nla_nest_start_noflag(skb, attr);
11593         if (!data)
11594                 goto nla_put_failure;
11595
11596         ((void **)skb->cb)[0] = rdev;
11597         ((void **)skb->cb)[1] = hdr;
11598         ((void **)skb->cb)[2] = data;
11599
11600         return skb;
11601
11602  nla_put_failure:
11603         kfree_skb(skb);
11604         return NULL;
11605 }
11606
11607 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11608                                            struct wireless_dev *wdev,
11609                                            enum nl80211_commands cmd,
11610                                            enum nl80211_attrs attr,
11611                                            unsigned int portid,
11612                                            int vendor_event_idx,
11613                                            int approxlen, gfp_t gfp)
11614 {
11615         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11616         const struct nl80211_vendor_cmd_info *info;
11617
11618         switch (cmd) {
11619         case NL80211_CMD_TESTMODE:
11620                 if (WARN_ON(vendor_event_idx != -1))
11621                         return NULL;
11622                 info = NULL;
11623                 break;
11624         case NL80211_CMD_VENDOR:
11625                 if (WARN_ON(vendor_event_idx < 0 ||
11626                             vendor_event_idx >= wiphy->n_vendor_events))
11627                         return NULL;
11628                 info = &wiphy->vendor_events[vendor_event_idx];
11629                 break;
11630         default:
11631                 WARN_ON(1);
11632                 return NULL;
11633         }
11634
11635         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11636                                            cmd, attr, info, gfp);
11637 }
11638 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11639
11640 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11641 {
11642         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11643         void *hdr = ((void **)skb->cb)[1];
11644         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11645         struct nlattr *data = ((void **)skb->cb)[2];
11646         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11647
11648         /* clear CB data for netlink core to own from now on */
11649         memset(skb->cb, 0, sizeof(skb->cb));
11650
11651         nla_nest_end(skb, data);
11652         genlmsg_end(skb, hdr);
11653
11654         if (nlhdr->nlmsg_pid) {
11655                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11656                                 nlhdr->nlmsg_pid);
11657         } else {
11658                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11659                         mcgrp = NL80211_MCGRP_VENDOR;
11660
11661                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11662                                         skb, 0, mcgrp, gfp);
11663         }
11664 }
11665 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11666
11667 #ifdef CONFIG_NL80211_TESTMODE
11668 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11669 {
11670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11671         struct wireless_dev *wdev;
11672         int err;
11673
11674         lockdep_assert_held(&rdev->wiphy.mtx);
11675
11676         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11677                                           info->attrs);
11678
11679         if (!rdev->ops->testmode_cmd)
11680                 return -EOPNOTSUPP;
11681
11682         if (IS_ERR(wdev)) {
11683                 err = PTR_ERR(wdev);
11684                 if (err != -EINVAL)
11685                         return err;
11686                 wdev = NULL;
11687         } else if (wdev->wiphy != &rdev->wiphy) {
11688                 return -EINVAL;
11689         }
11690
11691         if (!info->attrs[NL80211_ATTR_TESTDATA])
11692                 return -EINVAL;
11693
11694         rdev->cur_cmd_info = info;
11695         err = rdev_testmode_cmd(rdev, wdev,
11696                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11697                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11698         rdev->cur_cmd_info = NULL;
11699
11700         return err;
11701 }
11702
11703 static int nl80211_testmode_dump(struct sk_buff *skb,
11704                                  struct netlink_callback *cb)
11705 {
11706         struct cfg80211_registered_device *rdev;
11707         struct nlattr **attrbuf = NULL;
11708         int err;
11709         long phy_idx;
11710         void *data = NULL;
11711         int data_len = 0;
11712
11713         rtnl_lock();
11714
11715         if (cb->args[0]) {
11716                 /*
11717                  * 0 is a valid index, but not valid for args[0],
11718                  * so we need to offset by 1.
11719                  */
11720                 phy_idx = cb->args[0] - 1;
11721
11722                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11723                 if (!rdev) {
11724                         err = -ENOENT;
11725                         goto out_err;
11726                 }
11727         } else {
11728                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11729                                   GFP_KERNEL);
11730                 if (!attrbuf) {
11731                         err = -ENOMEM;
11732                         goto out_err;
11733                 }
11734
11735                 err = nlmsg_parse_deprecated(cb->nlh,
11736                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11737                                              attrbuf, nl80211_fam.maxattr,
11738                                              nl80211_policy, NULL);
11739                 if (err)
11740                         goto out_err;
11741
11742                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11743                 if (IS_ERR(rdev)) {
11744                         err = PTR_ERR(rdev);
11745                         goto out_err;
11746                 }
11747                 phy_idx = rdev->wiphy_idx;
11748
11749                 if (attrbuf[NL80211_ATTR_TESTDATA])
11750                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11751         }
11752
11753         if (cb->args[1]) {
11754                 data = nla_data((void *)cb->args[1]);
11755                 data_len = nla_len((void *)cb->args[1]);
11756         }
11757
11758         if (!rdev->ops->testmode_dump) {
11759                 err = -EOPNOTSUPP;
11760                 goto out_err;
11761         }
11762
11763         while (1) {
11764                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11765                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11766                                            NL80211_CMD_TESTMODE);
11767                 struct nlattr *tmdata;
11768
11769                 if (!hdr)
11770                         break;
11771
11772                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11773                         genlmsg_cancel(skb, hdr);
11774                         break;
11775                 }
11776
11777                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11778                 if (!tmdata) {
11779                         genlmsg_cancel(skb, hdr);
11780                         break;
11781                 }
11782                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11783                 nla_nest_end(skb, tmdata);
11784
11785                 if (err == -ENOBUFS || err == -ENOENT) {
11786                         genlmsg_cancel(skb, hdr);
11787                         break;
11788                 } else if (err) {
11789                         genlmsg_cancel(skb, hdr);
11790                         goto out_err;
11791                 }
11792
11793                 genlmsg_end(skb, hdr);
11794         }
11795
11796         err = skb->len;
11797         /* see above */
11798         cb->args[0] = phy_idx + 1;
11799  out_err:
11800         kfree(attrbuf);
11801         rtnl_unlock();
11802         return err;
11803 }
11804 #endif
11805
11806 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11807 {
11808         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11809         struct net_device *dev = info->user_ptr[1];
11810         struct cfg80211_connect_params connect;
11811         struct wiphy *wiphy;
11812         struct cfg80211_cached_keys *connkeys = NULL;
11813         u32 freq = 0;
11814         int err;
11815
11816         memset(&connect, 0, sizeof(connect));
11817
11818         if (!info->attrs[NL80211_ATTR_SSID] ||
11819             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11820                 return -EINVAL;
11821
11822         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11823                 connect.auth_type =
11824                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11825                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11826                                              NL80211_CMD_CONNECT))
11827                         return -EINVAL;
11828         } else
11829                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11830
11831         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11832
11833         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11834             !wiphy_ext_feature_isset(&rdev->wiphy,
11835                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11836                 return -EINVAL;
11837         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11838
11839         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11840                                       NL80211_MAX_NR_CIPHER_SUITES);
11841         if (err)
11842                 return err;
11843
11844         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11845             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11846                 return -EOPNOTSUPP;
11847
11848         wiphy = &rdev->wiphy;
11849
11850         connect.bg_scan_period = -1;
11851         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11852                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11853                 connect.bg_scan_period =
11854                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11855         }
11856
11857         if (info->attrs[NL80211_ATTR_MAC])
11858                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11859         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11860                 connect.bssid_hint =
11861                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11862         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11863         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11864
11865         if (info->attrs[NL80211_ATTR_IE]) {
11866                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11867                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11868         }
11869
11870         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11871                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11872                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11873                     !wiphy_ext_feature_isset(&rdev->wiphy,
11874                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11875                         return -EOPNOTSUPP;
11876         } else {
11877                 connect.mfp = NL80211_MFP_NO;
11878         }
11879
11880         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11881                 connect.prev_bssid =
11882                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11883
11884         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11885                 freq = MHZ_TO_KHZ(nla_get_u32(
11886                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11887         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11888                 freq +=
11889                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11890
11891         if (freq) {
11892                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11893                 if (!connect.channel)
11894                         return -EINVAL;
11895         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11896                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11897                 freq = MHZ_TO_KHZ(freq);
11898                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11899                 if (!connect.channel_hint)
11900                         return -EINVAL;
11901         }
11902
11903         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11904                 connect.edmg.channels =
11905                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11906
11907                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11908                         connect.edmg.bw_config =
11909                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11910         }
11911
11912         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11913                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11914                 if (IS_ERR(connkeys))
11915                         return PTR_ERR(connkeys);
11916         }
11917
11918         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11919                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11920
11921         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11922                 memcpy(&connect.ht_capa_mask,
11923                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11924                        sizeof(connect.ht_capa_mask));
11925
11926         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11927                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11928                         kfree_sensitive(connkeys);
11929                         return -EINVAL;
11930                 }
11931                 memcpy(&connect.ht_capa,
11932                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11933                        sizeof(connect.ht_capa));
11934         }
11935
11936         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11937                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11938
11939         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11940                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11941
11942         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11943                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11944
11945         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11946                 memcpy(&connect.vht_capa_mask,
11947                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11948                        sizeof(connect.vht_capa_mask));
11949
11950         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11951                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11952                         kfree_sensitive(connkeys);
11953                         return -EINVAL;
11954                 }
11955                 memcpy(&connect.vht_capa,
11956                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11957                        sizeof(connect.vht_capa));
11958         }
11959
11960         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11961                 if (!((rdev->wiphy.features &
11962                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11963                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11964                     !wiphy_ext_feature_isset(&rdev->wiphy,
11965                                              NL80211_EXT_FEATURE_RRM)) {
11966                         kfree_sensitive(connkeys);
11967                         return -EINVAL;
11968                 }
11969                 connect.flags |= ASSOC_REQ_USE_RRM;
11970         }
11971
11972         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11973         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11974                 kfree_sensitive(connkeys);
11975                 return -EOPNOTSUPP;
11976         }
11977
11978         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11979                 /* bss selection makes no sense if bssid is set */
11980                 if (connect.bssid) {
11981                         kfree_sensitive(connkeys);
11982                         return -EINVAL;
11983                 }
11984
11985                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11986                                        wiphy, &connect.bss_select);
11987                 if (err) {
11988                         kfree_sensitive(connkeys);
11989                         return err;
11990                 }
11991         }
11992
11993         if (wiphy_ext_feature_isset(&rdev->wiphy,
11994                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11995             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11996             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11997             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11998             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11999                 connect.fils_erp_username =
12000                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12001                 connect.fils_erp_username_len =
12002                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12003                 connect.fils_erp_realm =
12004                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12005                 connect.fils_erp_realm_len =
12006                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12007                 connect.fils_erp_next_seq_num =
12008                         nla_get_u16(
12009                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12010                 connect.fils_erp_rrk =
12011                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12012                 connect.fils_erp_rrk_len =
12013                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12014         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12015                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12016                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12017                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12018                 kfree_sensitive(connkeys);
12019                 return -EINVAL;
12020         }
12021
12022         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12023                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12024                         kfree_sensitive(connkeys);
12025                         GENL_SET_ERR_MSG(info,
12026                                          "external auth requires connection ownership");
12027                         return -EINVAL;
12028                 }
12029                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12030         }
12031
12032         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12033                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12034
12035         wdev_lock(dev->ieee80211_ptr);
12036
12037         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12038                                connect.prev_bssid);
12039         if (err)
12040                 kfree_sensitive(connkeys);
12041
12042         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12043                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12044                 if (connect.bssid)
12045                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12046                                connect.bssid, ETH_ALEN);
12047                 else
12048                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12049         }
12050
12051         wdev_unlock(dev->ieee80211_ptr);
12052
12053         return err;
12054 }
12055
12056 static int nl80211_update_connect_params(struct sk_buff *skb,
12057                                          struct genl_info *info)
12058 {
12059         struct cfg80211_connect_params connect = {};
12060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12061         struct net_device *dev = info->user_ptr[1];
12062         struct wireless_dev *wdev = dev->ieee80211_ptr;
12063         bool fils_sk_offload;
12064         u32 auth_type;
12065         u32 changed = 0;
12066         int ret;
12067
12068         if (!rdev->ops->update_connect_params)
12069                 return -EOPNOTSUPP;
12070
12071         if (info->attrs[NL80211_ATTR_IE]) {
12072                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12073                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12074                 changed |= UPDATE_ASSOC_IES;
12075         }
12076
12077         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12078                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12079
12080         /*
12081          * when driver supports fils-sk offload all attributes must be
12082          * provided. So the else covers "fils-sk-not-all" and
12083          * "no-fils-sk-any".
12084          */
12085         if (fils_sk_offload &&
12086             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12087             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12088             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12089             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12090                 connect.fils_erp_username =
12091                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12092                 connect.fils_erp_username_len =
12093                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12094                 connect.fils_erp_realm =
12095                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12096                 connect.fils_erp_realm_len =
12097                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12098                 connect.fils_erp_next_seq_num =
12099                         nla_get_u16(
12100                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12101                 connect.fils_erp_rrk =
12102                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12103                 connect.fils_erp_rrk_len =
12104                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12105                 changed |= UPDATE_FILS_ERP_INFO;
12106         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12107                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12108                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12109                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12110                 return -EINVAL;
12111         }
12112
12113         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12114                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12115                 if (!nl80211_valid_auth_type(rdev, auth_type,
12116                                              NL80211_CMD_CONNECT))
12117                         return -EINVAL;
12118
12119                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12120                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12121                         return -EINVAL;
12122
12123                 connect.auth_type = auth_type;
12124                 changed |= UPDATE_AUTH_TYPE;
12125         }
12126
12127         wdev_lock(dev->ieee80211_ptr);
12128         if (!wdev->connected)
12129                 ret = -ENOLINK;
12130         else
12131                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
12132         wdev_unlock(dev->ieee80211_ptr);
12133
12134         return ret;
12135 }
12136
12137 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12138 {
12139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12140         struct net_device *dev = info->user_ptr[1];
12141         u16 reason;
12142         int ret;
12143
12144         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12145             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12146                 return -EPERM;
12147
12148         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12149                 reason = WLAN_REASON_DEAUTH_LEAVING;
12150         else
12151                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12152
12153         if (reason == 0)
12154                 return -EINVAL;
12155
12156         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12157             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12158                 return -EOPNOTSUPP;
12159
12160         wdev_lock(dev->ieee80211_ptr);
12161         ret = cfg80211_disconnect(rdev, dev, reason, true);
12162         wdev_unlock(dev->ieee80211_ptr);
12163         return ret;
12164 }
12165
12166 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12167 {
12168         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12169         struct net *net;
12170         int err;
12171
12172         if (info->attrs[NL80211_ATTR_PID]) {
12173                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12174
12175                 net = get_net_ns_by_pid(pid);
12176         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12177                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12178
12179                 net = get_net_ns_by_fd(fd);
12180         } else {
12181                 return -EINVAL;
12182         }
12183
12184         if (IS_ERR(net))
12185                 return PTR_ERR(net);
12186
12187         err = 0;
12188
12189         /* check if anything to do */
12190         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12191                 err = cfg80211_switch_netns(rdev, net);
12192
12193         put_net(net);
12194         return err;
12195 }
12196
12197 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12198 {
12199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12200         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12201                         struct cfg80211_pmksa *pmksa) = NULL;
12202         struct net_device *dev = info->user_ptr[1];
12203         struct cfg80211_pmksa pmksa;
12204
12205         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12206
12207         if (!info->attrs[NL80211_ATTR_PMKID])
12208                 return -EINVAL;
12209
12210         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12211
12212         if (info->attrs[NL80211_ATTR_MAC]) {
12213                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12214         } else if (info->attrs[NL80211_ATTR_SSID] &&
12215                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12216                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12217                     info->attrs[NL80211_ATTR_PMK])) {
12218                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12219                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12220                 pmksa.cache_id =
12221                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12222         } else {
12223                 return -EINVAL;
12224         }
12225         if (info->attrs[NL80211_ATTR_PMK]) {
12226                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12227                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12228         }
12229
12230         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12231                 pmksa.pmk_lifetime =
12232                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12233
12234         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12235                 pmksa.pmk_reauth_threshold =
12236                         nla_get_u8(
12237                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12238
12239         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12240             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12241             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12242               wiphy_ext_feature_isset(&rdev->wiphy,
12243                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12244                 return -EOPNOTSUPP;
12245
12246         switch (info->genlhdr->cmd) {
12247         case NL80211_CMD_SET_PMKSA:
12248                 rdev_ops = rdev->ops->set_pmksa;
12249                 break;
12250         case NL80211_CMD_DEL_PMKSA:
12251                 rdev_ops = rdev->ops->del_pmksa;
12252                 break;
12253         default:
12254                 WARN_ON(1);
12255                 break;
12256         }
12257
12258         if (!rdev_ops)
12259                 return -EOPNOTSUPP;
12260
12261         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12262 }
12263
12264 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12265 {
12266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12267         struct net_device *dev = info->user_ptr[1];
12268
12269         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12270             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12271                 return -EOPNOTSUPP;
12272
12273         if (!rdev->ops->flush_pmksa)
12274                 return -EOPNOTSUPP;
12275
12276         return rdev_flush_pmksa(rdev, dev);
12277 }
12278
12279 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12280 {
12281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12282         struct net_device *dev = info->user_ptr[1];
12283         u8 action_code, dialog_token;
12284         u32 peer_capability = 0;
12285         u16 status_code;
12286         u8 *peer;
12287         int link_id;
12288         bool initiator;
12289
12290         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12291             !rdev->ops->tdls_mgmt)
12292                 return -EOPNOTSUPP;
12293
12294         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12295             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12296             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12297             !info->attrs[NL80211_ATTR_IE] ||
12298             !info->attrs[NL80211_ATTR_MAC])
12299                 return -EINVAL;
12300
12301         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12302         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12303         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12304         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12305         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12306         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12307                 peer_capability =
12308                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12309         link_id = nl80211_link_id_or_invalid(info->attrs);
12310
12311         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12312                               dialog_token, status_code, peer_capability,
12313                               initiator,
12314                               nla_data(info->attrs[NL80211_ATTR_IE]),
12315                               nla_len(info->attrs[NL80211_ATTR_IE]));
12316 }
12317
12318 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12319 {
12320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12321         struct net_device *dev = info->user_ptr[1];
12322         enum nl80211_tdls_operation operation;
12323         u8 *peer;
12324
12325         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12326             !rdev->ops->tdls_oper)
12327                 return -EOPNOTSUPP;
12328
12329         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12330             !info->attrs[NL80211_ATTR_MAC])
12331                 return -EINVAL;
12332
12333         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12334         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12335
12336         return rdev_tdls_oper(rdev, dev, peer, operation);
12337 }
12338
12339 static int nl80211_remain_on_channel(struct sk_buff *skb,
12340                                      struct genl_info *info)
12341 {
12342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12343         unsigned int link_id = nl80211_link_id(info->attrs);
12344         struct wireless_dev *wdev = info->user_ptr[1];
12345         struct cfg80211_chan_def chandef;
12346         struct sk_buff *msg;
12347         void *hdr;
12348         u64 cookie;
12349         u32 duration;
12350         int err;
12351
12352         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12353             !info->attrs[NL80211_ATTR_DURATION])
12354                 return -EINVAL;
12355
12356         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12357
12358         if (!rdev->ops->remain_on_channel ||
12359             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12360                 return -EOPNOTSUPP;
12361
12362         /*
12363          * We should be on that channel for at least a minimum amount of
12364          * time (10ms) but no longer than the driver supports.
12365          */
12366         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12367             duration > rdev->wiphy.max_remain_on_channel_duration)
12368                 return -EINVAL;
12369
12370         err = nl80211_parse_chandef(rdev, info, &chandef);
12371         if (err)
12372                 return err;
12373
12374         wdev_lock(wdev);
12375         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12376                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12377
12378                 oper_chandef = wdev_chandef(wdev, link_id);
12379
12380                 if (WARN_ON(!oper_chandef)) {
12381                         /* cannot happen since we must beacon to get here */
12382                         WARN_ON(1);
12383                         wdev_unlock(wdev);
12384                         return -EBUSY;
12385                 }
12386
12387                 /* note: returns first one if identical chandefs */
12388                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12389                                                              oper_chandef);
12390
12391                 if (compat_chandef != &chandef) {
12392                         wdev_unlock(wdev);
12393                         return -EBUSY;
12394                 }
12395         }
12396         wdev_unlock(wdev);
12397
12398         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12399         if (!msg)
12400                 return -ENOMEM;
12401
12402         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12403                              NL80211_CMD_REMAIN_ON_CHANNEL);
12404         if (!hdr) {
12405                 err = -ENOBUFS;
12406                 goto free_msg;
12407         }
12408
12409         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12410                                      duration, &cookie);
12411
12412         if (err)
12413                 goto free_msg;
12414
12415         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12416                               NL80211_ATTR_PAD))
12417                 goto nla_put_failure;
12418
12419         genlmsg_end(msg, hdr);
12420
12421         return genlmsg_reply(msg, info);
12422
12423  nla_put_failure:
12424         err = -ENOBUFS;
12425  free_msg:
12426         nlmsg_free(msg);
12427         return err;
12428 }
12429
12430 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12431                                             struct genl_info *info)
12432 {
12433         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12434         struct wireless_dev *wdev = info->user_ptr[1];
12435         u64 cookie;
12436
12437         if (!info->attrs[NL80211_ATTR_COOKIE])
12438                 return -EINVAL;
12439
12440         if (!rdev->ops->cancel_remain_on_channel)
12441                 return -EOPNOTSUPP;
12442
12443         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12444
12445         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12446 }
12447
12448 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12449                                        struct genl_info *info)
12450 {
12451         struct cfg80211_bitrate_mask mask;
12452         unsigned int link_id = nl80211_link_id(info->attrs);
12453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12454         struct net_device *dev = info->user_ptr[1];
12455         struct wireless_dev *wdev = dev->ieee80211_ptr;
12456         int err;
12457
12458         if (!rdev->ops->set_bitrate_mask)
12459                 return -EOPNOTSUPP;
12460
12461         wdev_lock(wdev);
12462         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12463                                             NL80211_ATTR_TX_RATES, &mask,
12464                                             dev, true, link_id);
12465         if (err)
12466                 goto out;
12467
12468         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12469 out:
12470         wdev_unlock(wdev);
12471         return err;
12472 }
12473
12474 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12475 {
12476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12477         struct wireless_dev *wdev = info->user_ptr[1];
12478         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12479
12480         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12481                 return -EINVAL;
12482
12483         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12484                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12485
12486         switch (wdev->iftype) {
12487         case NL80211_IFTYPE_STATION:
12488         case NL80211_IFTYPE_ADHOC:
12489         case NL80211_IFTYPE_P2P_CLIENT:
12490         case NL80211_IFTYPE_AP:
12491         case NL80211_IFTYPE_AP_VLAN:
12492         case NL80211_IFTYPE_MESH_POINT:
12493         case NL80211_IFTYPE_P2P_GO:
12494         case NL80211_IFTYPE_P2P_DEVICE:
12495                 break;
12496         case NL80211_IFTYPE_NAN:
12497                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12498                                              NL80211_EXT_FEATURE_SECURE_NAN))
12499                         return -EOPNOTSUPP;
12500                 break;
12501         default:
12502                 return -EOPNOTSUPP;
12503         }
12504
12505         /* not much point in registering if we can't reply */
12506         if (!rdev->ops->mgmt_tx)
12507                 return -EOPNOTSUPP;
12508
12509         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12510             !wiphy_ext_feature_isset(&rdev->wiphy,
12511                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12512                 GENL_SET_ERR_MSG(info,
12513                                  "multicast RX registrations are not supported");
12514                 return -EOPNOTSUPP;
12515         }
12516
12517         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12518                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12519                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12520                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12521                                            info->extack);
12522 }
12523
12524 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12525 {
12526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12527         struct wireless_dev *wdev = info->user_ptr[1];
12528         struct cfg80211_chan_def chandef;
12529         int err;
12530         void *hdr = NULL;
12531         u64 cookie;
12532         struct sk_buff *msg = NULL;
12533         struct cfg80211_mgmt_tx_params params = {
12534                 .dont_wait_for_ack =
12535                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12536         };
12537
12538         if (!info->attrs[NL80211_ATTR_FRAME])
12539                 return -EINVAL;
12540
12541         if (!rdev->ops->mgmt_tx)
12542                 return -EOPNOTSUPP;
12543
12544         switch (wdev->iftype) {
12545         case NL80211_IFTYPE_P2P_DEVICE:
12546                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12547                         return -EINVAL;
12548                 break;
12549         case NL80211_IFTYPE_STATION:
12550         case NL80211_IFTYPE_ADHOC:
12551         case NL80211_IFTYPE_P2P_CLIENT:
12552         case NL80211_IFTYPE_AP:
12553         case NL80211_IFTYPE_AP_VLAN:
12554         case NL80211_IFTYPE_MESH_POINT:
12555         case NL80211_IFTYPE_P2P_GO:
12556                 break;
12557         case NL80211_IFTYPE_NAN:
12558                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12559                                              NL80211_EXT_FEATURE_SECURE_NAN))
12560                         return -EOPNOTSUPP;
12561                 break;
12562         default:
12563                 return -EOPNOTSUPP;
12564         }
12565
12566         if (info->attrs[NL80211_ATTR_DURATION]) {
12567                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12568                         return -EINVAL;
12569                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12570
12571                 /*
12572                  * We should wait on the channel for at least a minimum amount
12573                  * of time (10ms) but no longer than the driver supports.
12574                  */
12575                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12576                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12577                         return -EINVAL;
12578         }
12579
12580         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12581
12582         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12583                 return -EINVAL;
12584
12585         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12586
12587         /* get the channel if any has been specified, otherwise pass NULL to
12588          * the driver. The latter will use the current one
12589          */
12590         chandef.chan = NULL;
12591         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12592                 err = nl80211_parse_chandef(rdev, info, &chandef);
12593                 if (err)
12594                         return err;
12595         }
12596
12597         if (!chandef.chan && params.offchan)
12598                 return -EINVAL;
12599
12600         wdev_lock(wdev);
12601         if (params.offchan &&
12602             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12603                 wdev_unlock(wdev);
12604                 return -EBUSY;
12605         }
12606
12607         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12608         /*
12609          * This now races due to the unlock, but we cannot check
12610          * the valid links for the _station_ anyway, so that's up
12611          * to the driver.
12612          */
12613         if (params.link_id >= 0 &&
12614             !(wdev->valid_links & BIT(params.link_id))) {
12615                 wdev_unlock(wdev);
12616                 return -EINVAL;
12617         }
12618         wdev_unlock(wdev);
12619
12620         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12621         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12622
12623         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12624                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12625                 int i;
12626
12627                 if (len % sizeof(u16))
12628                         return -EINVAL;
12629
12630                 params.n_csa_offsets = len / sizeof(u16);
12631                 params.csa_offsets =
12632                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12633
12634                 /* check that all the offsets fit the frame */
12635                 for (i = 0; i < params.n_csa_offsets; i++) {
12636                         if (params.csa_offsets[i] >= params.len)
12637                                 return -EINVAL;
12638                 }
12639         }
12640
12641         if (!params.dont_wait_for_ack) {
12642                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12643                 if (!msg)
12644                         return -ENOMEM;
12645
12646                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12647                                      NL80211_CMD_FRAME);
12648                 if (!hdr) {
12649                         err = -ENOBUFS;
12650                         goto free_msg;
12651                 }
12652         }
12653
12654         params.chan = chandef.chan;
12655         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12656         if (err)
12657                 goto free_msg;
12658
12659         if (msg) {
12660                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12661                                       NL80211_ATTR_PAD))
12662                         goto nla_put_failure;
12663
12664                 genlmsg_end(msg, hdr);
12665                 return genlmsg_reply(msg, info);
12666         }
12667
12668         return 0;
12669
12670  nla_put_failure:
12671         err = -ENOBUFS;
12672  free_msg:
12673         nlmsg_free(msg);
12674         return err;
12675 }
12676
12677 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12678 {
12679         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12680         struct wireless_dev *wdev = info->user_ptr[1];
12681         u64 cookie;
12682
12683         if (!info->attrs[NL80211_ATTR_COOKIE])
12684                 return -EINVAL;
12685
12686         if (!rdev->ops->mgmt_tx_cancel_wait)
12687                 return -EOPNOTSUPP;
12688
12689         switch (wdev->iftype) {
12690         case NL80211_IFTYPE_STATION:
12691         case NL80211_IFTYPE_ADHOC:
12692         case NL80211_IFTYPE_P2P_CLIENT:
12693         case NL80211_IFTYPE_AP:
12694         case NL80211_IFTYPE_AP_VLAN:
12695         case NL80211_IFTYPE_P2P_GO:
12696         case NL80211_IFTYPE_P2P_DEVICE:
12697                 break;
12698         case NL80211_IFTYPE_NAN:
12699                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12700                                              NL80211_EXT_FEATURE_SECURE_NAN))
12701                         return -EOPNOTSUPP;
12702                 break;
12703         default:
12704                 return -EOPNOTSUPP;
12705         }
12706
12707         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12708
12709         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12710 }
12711
12712 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12713 {
12714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12715         struct wireless_dev *wdev;
12716         struct net_device *dev = info->user_ptr[1];
12717         u8 ps_state;
12718         bool state;
12719         int err;
12720
12721         if (!info->attrs[NL80211_ATTR_PS_STATE])
12722                 return -EINVAL;
12723
12724         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12725
12726         wdev = dev->ieee80211_ptr;
12727
12728         if (!rdev->ops->set_power_mgmt)
12729                 return -EOPNOTSUPP;
12730
12731         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12732
12733         if (state == wdev->ps)
12734                 return 0;
12735
12736         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12737         if (!err)
12738                 wdev->ps = state;
12739         return err;
12740 }
12741
12742 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12743 {
12744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12745         enum nl80211_ps_state ps_state;
12746         struct wireless_dev *wdev;
12747         struct net_device *dev = info->user_ptr[1];
12748         struct sk_buff *msg;
12749         void *hdr;
12750         int err;
12751
12752         wdev = dev->ieee80211_ptr;
12753
12754         if (!rdev->ops->set_power_mgmt)
12755                 return -EOPNOTSUPP;
12756
12757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12758         if (!msg)
12759                 return -ENOMEM;
12760
12761         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12762                              NL80211_CMD_GET_POWER_SAVE);
12763         if (!hdr) {
12764                 err = -ENOBUFS;
12765                 goto free_msg;
12766         }
12767
12768         if (wdev->ps)
12769                 ps_state = NL80211_PS_ENABLED;
12770         else
12771                 ps_state = NL80211_PS_DISABLED;
12772
12773         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12774                 goto nla_put_failure;
12775
12776         genlmsg_end(msg, hdr);
12777         return genlmsg_reply(msg, info);
12778
12779  nla_put_failure:
12780         err = -ENOBUFS;
12781  free_msg:
12782         nlmsg_free(msg);
12783         return err;
12784 }
12785
12786 static const struct nla_policy
12787 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12788         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12789         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12790         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12791         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12792         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12793         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12794         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12795 };
12796
12797 static int nl80211_set_cqm_txe(struct genl_info *info,
12798                                u32 rate, u32 pkts, u32 intvl)
12799 {
12800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12801         struct net_device *dev = info->user_ptr[1];
12802         struct wireless_dev *wdev = dev->ieee80211_ptr;
12803
12804         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12805                 return -EINVAL;
12806
12807         if (!rdev->ops->set_cqm_txe_config)
12808                 return -EOPNOTSUPP;
12809
12810         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12811             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12812                 return -EOPNOTSUPP;
12813
12814         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12815 }
12816
12817 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12818                                     struct net_device *dev,
12819                                     struct cfg80211_cqm_config *cqm_config)
12820 {
12821         struct wireless_dev *wdev = dev->ieee80211_ptr;
12822         s32 last, low, high;
12823         u32 hyst;
12824         int i, n, low_index;
12825         int err;
12826
12827         /*
12828          * Obtain current RSSI value if possible, if not and no RSSI threshold
12829          * event has been received yet, we should receive an event after a
12830          * connection is established and enough beacons received to calculate
12831          * the average.
12832          */
12833         if (!cqm_config->last_rssi_event_value &&
12834             wdev->links[0].client.current_bss &&
12835             rdev->ops->get_station) {
12836                 struct station_info sinfo = {};
12837                 u8 *mac_addr;
12838
12839                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12840
12841                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12842                 if (err)
12843                         return err;
12844
12845                 cfg80211_sinfo_release_content(&sinfo);
12846                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12847                         cqm_config->last_rssi_event_value =
12848                                 (s8) sinfo.rx_beacon_signal_avg;
12849         }
12850
12851         last = cqm_config->last_rssi_event_value;
12852         hyst = cqm_config->rssi_hyst;
12853         n = cqm_config->n_rssi_thresholds;
12854
12855         for (i = 0; i < n; i++) {
12856                 i = array_index_nospec(i, n);
12857                 if (last < cqm_config->rssi_thresholds[i])
12858                         break;
12859         }
12860
12861         low_index = i - 1;
12862         if (low_index >= 0) {
12863                 low_index = array_index_nospec(low_index, n);
12864                 low = cqm_config->rssi_thresholds[low_index] - hyst;
12865         } else {
12866                 low = S32_MIN;
12867         }
12868         if (i < n) {
12869                 i = array_index_nospec(i, n);
12870                 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12871         } else {
12872                 high = S32_MAX;
12873         }
12874
12875         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12876 }
12877
12878 static int nl80211_set_cqm_rssi(struct genl_info *info,
12879                                 const s32 *thresholds, int n_thresholds,
12880                                 u32 hysteresis)
12881 {
12882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12883         struct cfg80211_cqm_config *cqm_config = NULL, *old;
12884         struct net_device *dev = info->user_ptr[1];
12885         struct wireless_dev *wdev = dev->ieee80211_ptr;
12886         int i, err;
12887         s32 prev = S32_MIN;
12888
12889         /* Check all values negative and sorted */
12890         for (i = 0; i < n_thresholds; i++) {
12891                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12892                         return -EINVAL;
12893
12894                 prev = thresholds[i];
12895         }
12896
12897         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12898             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12899                 return -EOPNOTSUPP;
12900
12901         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12902                 n_thresholds = 0;
12903
12904         wdev_lock(wdev);
12905         old = rcu_dereference_protected(wdev->cqm_config,
12906                                         lockdep_is_held(&wdev->mtx));
12907
12908         /* if already disabled just succeed */
12909         if (!n_thresholds && !old) {
12910                 err = 0;
12911                 goto unlock;
12912         }
12913
12914         if (n_thresholds > 1) {
12915                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12916                                              NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12917                     !rdev->ops->set_cqm_rssi_range_config) {
12918                         err = -EOPNOTSUPP;
12919                         goto unlock;
12920                 }
12921         } else {
12922                 if (!rdev->ops->set_cqm_rssi_config) {
12923                         err = -EOPNOTSUPP;
12924                         goto unlock;
12925                 }
12926         }
12927
12928         if (n_thresholds) {
12929                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12930                                                  n_thresholds),
12931                                      GFP_KERNEL);
12932                 if (!cqm_config) {
12933                         err = -ENOMEM;
12934                         goto unlock;
12935                 }
12936
12937                 cqm_config->rssi_hyst = hysteresis;
12938                 cqm_config->n_rssi_thresholds = n_thresholds;
12939                 memcpy(cqm_config->rssi_thresholds, thresholds,
12940                        flex_array_size(cqm_config, rssi_thresholds,
12941                                        n_thresholds));
12942                 cqm_config->use_range_api = n_thresholds > 1 ||
12943                                             !rdev->ops->set_cqm_rssi_config;
12944
12945                 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12946
12947                 if (cqm_config->use_range_api)
12948                         err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12949                 else
12950                         err = rdev_set_cqm_rssi_config(rdev, dev,
12951                                                        thresholds[0],
12952                                                        hysteresis);
12953         } else {
12954                 RCU_INIT_POINTER(wdev->cqm_config, NULL);
12955                 /* if enabled as range also disable via range */
12956                 if (old->use_range_api)
12957                         err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12958                 else
12959                         err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12960         }
12961
12962         if (err) {
12963                 rcu_assign_pointer(wdev->cqm_config, old);
12964                 kfree_rcu(cqm_config, rcu_head);
12965         } else {
12966                 kfree_rcu(old, rcu_head);
12967         }
12968 unlock:
12969         wdev_unlock(wdev);
12970
12971         return err;
12972 }
12973
12974 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12975 {
12976         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12977         struct nlattr *cqm;
12978         int err;
12979
12980         cqm = info->attrs[NL80211_ATTR_CQM];
12981         if (!cqm)
12982                 return -EINVAL;
12983
12984         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12985                                           nl80211_attr_cqm_policy,
12986                                           info->extack);
12987         if (err)
12988                 return err;
12989
12990         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12991             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12992                 const s32 *thresholds =
12993                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12994                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12995                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12996
12997                 if (len % 4)
12998                         return -EINVAL;
12999
13000                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
13001                                             hysteresis);
13002         }
13003
13004         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
13005             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
13006             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
13007                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
13008                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
13009                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
13010
13011                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
13012         }
13013
13014         return -EINVAL;
13015 }
13016
13017 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13018 {
13019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13020         struct net_device *dev = info->user_ptr[1];
13021         struct ocb_setup setup = {};
13022         int err;
13023
13024         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13025         if (err)
13026                 return err;
13027
13028         return cfg80211_join_ocb(rdev, dev, &setup);
13029 }
13030
13031 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
13032 {
13033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13034         struct net_device *dev = info->user_ptr[1];
13035
13036         return cfg80211_leave_ocb(rdev, dev);
13037 }
13038
13039 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13040 {
13041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13042         struct net_device *dev = info->user_ptr[1];
13043         struct mesh_config cfg;
13044         struct mesh_setup setup;
13045         int err;
13046
13047         /* start with default */
13048         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13049         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13050
13051         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13052                 /* and parse parameters if given */
13053                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13054                 if (err)
13055                         return err;
13056         }
13057
13058         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13059             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13060                 return -EINVAL;
13061
13062         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13063         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13064
13065         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13066             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13067                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13068                         return -EINVAL;
13069
13070         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13071                 setup.beacon_interval =
13072                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13073
13074                 err = cfg80211_validate_beacon_int(rdev,
13075                                                    NL80211_IFTYPE_MESH_POINT,
13076                                                    setup.beacon_interval);
13077                 if (err)
13078                         return err;
13079         }
13080
13081         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13082                 setup.dtim_period =
13083                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13084                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13085                         return -EINVAL;
13086         }
13087
13088         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13089                 /* parse additional setup parameters if given */
13090                 err = nl80211_parse_mesh_setup(info, &setup);
13091                 if (err)
13092                         return err;
13093         }
13094
13095         if (setup.user_mpm)
13096                 cfg.auto_open_plinks = false;
13097
13098         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13099                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13100                 if (err)
13101                         return err;
13102         } else {
13103                 /* __cfg80211_join_mesh() will sort it out */
13104                 setup.chandef.chan = NULL;
13105         }
13106
13107         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13108                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13109                 int n_rates =
13110                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13111                 struct ieee80211_supported_band *sband;
13112
13113                 if (!setup.chandef.chan)
13114                         return -EINVAL;
13115
13116                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13117
13118                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13119                                              &setup.basic_rates);
13120                 if (err)
13121                         return err;
13122         }
13123
13124         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13125                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13126                                                     NL80211_ATTR_TX_RATES,
13127                                                     &setup.beacon_rate,
13128                                                     dev, false, 0);
13129                 if (err)
13130                         return err;
13131
13132                 if (!setup.chandef.chan)
13133                         return -EINVAL;
13134
13135                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13136                                               &setup.beacon_rate);
13137                 if (err)
13138                         return err;
13139         }
13140
13141         setup.userspace_handles_dfs =
13142                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13143
13144         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13145                 int r = validate_pae_over_nl80211(rdev, info);
13146
13147                 if (r < 0)
13148                         return r;
13149
13150                 setup.control_port_over_nl80211 = true;
13151         }
13152
13153         wdev_lock(dev->ieee80211_ptr);
13154         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13155         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13156                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13157         wdev_unlock(dev->ieee80211_ptr);
13158
13159         return err;
13160 }
13161
13162 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13163 {
13164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13165         struct net_device *dev = info->user_ptr[1];
13166
13167         return cfg80211_leave_mesh(rdev, dev);
13168 }
13169
13170 #ifdef CONFIG_PM
13171 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13172                                         struct cfg80211_registered_device *rdev)
13173 {
13174         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13175         struct nlattr *nl_pats, *nl_pat;
13176         int i, pat_len;
13177
13178         if (!wowlan->n_patterns)
13179                 return 0;
13180
13181         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13182         if (!nl_pats)
13183                 return -ENOBUFS;
13184
13185         for (i = 0; i < wowlan->n_patterns; i++) {
13186                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13187                 if (!nl_pat)
13188                         return -ENOBUFS;
13189                 pat_len = wowlan->patterns[i].pattern_len;
13190                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13191                             wowlan->patterns[i].mask) ||
13192                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13193                             wowlan->patterns[i].pattern) ||
13194                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13195                                 wowlan->patterns[i].pkt_offset))
13196                         return -ENOBUFS;
13197                 nla_nest_end(msg, nl_pat);
13198         }
13199         nla_nest_end(msg, nl_pats);
13200
13201         return 0;
13202 }
13203
13204 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13205                                    struct cfg80211_wowlan_tcp *tcp)
13206 {
13207         struct nlattr *nl_tcp;
13208
13209         if (!tcp)
13210                 return 0;
13211
13212         nl_tcp = nla_nest_start_noflag(msg,
13213                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13214         if (!nl_tcp)
13215                 return -ENOBUFS;
13216
13217         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13218             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13219             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13220             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13221             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13222             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13223                     tcp->payload_len, tcp->payload) ||
13224             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13225                         tcp->data_interval) ||
13226             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13227                     tcp->wake_len, tcp->wake_data) ||
13228             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13229                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13230                 return -ENOBUFS;
13231
13232         if (tcp->payload_seq.len &&
13233             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13234                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13235                 return -ENOBUFS;
13236
13237         if (tcp->payload_tok.len &&
13238             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13239                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13240                     &tcp->payload_tok))
13241                 return -ENOBUFS;
13242
13243         nla_nest_end(msg, nl_tcp);
13244
13245         return 0;
13246 }
13247
13248 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13249                                   struct cfg80211_sched_scan_request *req)
13250 {
13251         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13252         int i;
13253
13254         if (!req)
13255                 return 0;
13256
13257         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13258         if (!nd)
13259                 return -ENOBUFS;
13260
13261         if (req->n_scan_plans == 1 &&
13262             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13263                         req->scan_plans[0].interval * 1000))
13264                 return -ENOBUFS;
13265
13266         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13267                 return -ENOBUFS;
13268
13269         if (req->relative_rssi_set) {
13270                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13271
13272                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13273                                req->relative_rssi))
13274                         return -ENOBUFS;
13275
13276                 rssi_adjust.band = req->rssi_adjust.band;
13277                 rssi_adjust.delta = req->rssi_adjust.delta;
13278                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13279                             sizeof(rssi_adjust), &rssi_adjust))
13280                         return -ENOBUFS;
13281         }
13282
13283         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13284         if (!freqs)
13285                 return -ENOBUFS;
13286
13287         for (i = 0; i < req->n_channels; i++) {
13288                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13289                         return -ENOBUFS;
13290         }
13291
13292         nla_nest_end(msg, freqs);
13293
13294         if (req->n_match_sets) {
13295                 matches = nla_nest_start_noflag(msg,
13296                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13297                 if (!matches)
13298                         return -ENOBUFS;
13299
13300                 for (i = 0; i < req->n_match_sets; i++) {
13301                         match = nla_nest_start_noflag(msg, i);
13302                         if (!match)
13303                                 return -ENOBUFS;
13304
13305                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13306                                     req->match_sets[i].ssid.ssid_len,
13307                                     req->match_sets[i].ssid.ssid))
13308                                 return -ENOBUFS;
13309                         nla_nest_end(msg, match);
13310                 }
13311                 nla_nest_end(msg, matches);
13312         }
13313
13314         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13315         if (!scan_plans)
13316                 return -ENOBUFS;
13317
13318         for (i = 0; i < req->n_scan_plans; i++) {
13319                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13320                 if (!scan_plan)
13321                         return -ENOBUFS;
13322
13323                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13324                                 req->scan_plans[i].interval) ||
13325                     (req->scan_plans[i].iterations &&
13326                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13327                                  req->scan_plans[i].iterations)))
13328                         return -ENOBUFS;
13329                 nla_nest_end(msg, scan_plan);
13330         }
13331         nla_nest_end(msg, scan_plans);
13332
13333         nla_nest_end(msg, nd);
13334
13335         return 0;
13336 }
13337
13338 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13339 {
13340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13341         struct sk_buff *msg;
13342         void *hdr;
13343         u32 size = NLMSG_DEFAULT_SIZE;
13344
13345         if (!rdev->wiphy.wowlan)
13346                 return -EOPNOTSUPP;
13347
13348         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13349                 /* adjust size to have room for all the data */
13350                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13351                         rdev->wiphy.wowlan_config->tcp->payload_len +
13352                         rdev->wiphy.wowlan_config->tcp->wake_len +
13353                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13354         }
13355
13356         msg = nlmsg_new(size, GFP_KERNEL);
13357         if (!msg)
13358                 return -ENOMEM;
13359
13360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13361                              NL80211_CMD_GET_WOWLAN);
13362         if (!hdr)
13363                 goto nla_put_failure;
13364
13365         if (rdev->wiphy.wowlan_config) {
13366                 struct nlattr *nl_wowlan;
13367
13368                 nl_wowlan = nla_nest_start_noflag(msg,
13369                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13370                 if (!nl_wowlan)
13371                         goto nla_put_failure;
13372
13373                 if ((rdev->wiphy.wowlan_config->any &&
13374                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13375                     (rdev->wiphy.wowlan_config->disconnect &&
13376                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13377                     (rdev->wiphy.wowlan_config->magic_pkt &&
13378                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13379                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13380                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13381                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13382                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13383                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13384                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13385                     (rdev->wiphy.wowlan_config->rfkill_release &&
13386                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13387                         goto nla_put_failure;
13388
13389                 if (nl80211_send_wowlan_patterns(msg, rdev))
13390                         goto nla_put_failure;
13391
13392                 if (nl80211_send_wowlan_tcp(msg,
13393                                             rdev->wiphy.wowlan_config->tcp))
13394                         goto nla_put_failure;
13395
13396                 if (nl80211_send_wowlan_nd(
13397                             msg,
13398                             rdev->wiphy.wowlan_config->nd_config))
13399                         goto nla_put_failure;
13400
13401                 nla_nest_end(msg, nl_wowlan);
13402         }
13403
13404         genlmsg_end(msg, hdr);
13405         return genlmsg_reply(msg, info);
13406
13407 nla_put_failure:
13408         nlmsg_free(msg);
13409         return -ENOBUFS;
13410 }
13411
13412 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13413                                     struct nlattr *attr,
13414                                     struct cfg80211_wowlan *trig)
13415 {
13416         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13417         struct cfg80211_wowlan_tcp *cfg;
13418         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13419         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13420         u32 size;
13421         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13422         int err, port;
13423
13424         if (!rdev->wiphy.wowlan->tcp)
13425                 return -EINVAL;
13426
13427         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13428                                           nl80211_wowlan_tcp_policy, NULL);
13429         if (err)
13430                 return err;
13431
13432         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13433             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13434             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13435             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13436             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13437             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13438             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13439             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13440                 return -EINVAL;
13441
13442         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13443         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13444                 return -EINVAL;
13445
13446         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13447                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13448             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13449                 return -EINVAL;
13450
13451         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13452         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13453                 return -EINVAL;
13454
13455         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13456         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13457                 return -EINVAL;
13458
13459         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13460                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13461
13462                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13463                 tokens_size = tokln - sizeof(*tok);
13464
13465                 if (!tok->len || tokens_size % tok->len)
13466                         return -EINVAL;
13467                 if (!rdev->wiphy.wowlan->tcp->tok)
13468                         return -EINVAL;
13469                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13470                         return -EINVAL;
13471                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13472                         return -EINVAL;
13473                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13474                         return -EINVAL;
13475                 if (tok->offset + tok->len > data_size)
13476                         return -EINVAL;
13477         }
13478
13479         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13480                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13481                 if (!rdev->wiphy.wowlan->tcp->seq)
13482                         return -EINVAL;
13483                 if (seq->len == 0 || seq->len > 4)
13484                         return -EINVAL;
13485                 if (seq->len + seq->offset > data_size)
13486                         return -EINVAL;
13487         }
13488
13489         size = sizeof(*cfg);
13490         size += data_size;
13491         size += wake_size + wake_mask_size;
13492         size += tokens_size;
13493
13494         cfg = kzalloc(size, GFP_KERNEL);
13495         if (!cfg)
13496                 return -ENOMEM;
13497         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13498         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13499         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13500                ETH_ALEN);
13501         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13502                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13503         else
13504                 port = 0;
13505 #ifdef CONFIG_INET
13506         /* allocate a socket and port for it and use it */
13507         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13508                             IPPROTO_TCP, &cfg->sock, 1);
13509         if (err) {
13510                 kfree(cfg);
13511                 return err;
13512         }
13513         if (inet_csk_get_port(cfg->sock->sk, port)) {
13514                 sock_release(cfg->sock);
13515                 kfree(cfg);
13516                 return -EADDRINUSE;
13517         }
13518         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13519 #else
13520         if (!port) {
13521                 kfree(cfg);
13522                 return -EINVAL;
13523         }
13524         cfg->src_port = port;
13525 #endif
13526
13527         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13528         cfg->payload_len = data_size;
13529         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13530         memcpy((void *)cfg->payload,
13531                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13532                data_size);
13533         if (seq)
13534                 cfg->payload_seq = *seq;
13535         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13536         cfg->wake_len = wake_size;
13537         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13538         memcpy((void *)cfg->wake_data,
13539                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13540                wake_size);
13541         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13542                          data_size + wake_size;
13543         memcpy((void *)cfg->wake_mask,
13544                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13545                wake_mask_size);
13546         if (tok) {
13547                 cfg->tokens_size = tokens_size;
13548                 cfg->payload_tok = *tok;
13549                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13550                        tokens_size);
13551         }
13552
13553         trig->tcp = cfg;
13554
13555         return 0;
13556 }
13557
13558 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13559                                    const struct wiphy_wowlan_support *wowlan,
13560                                    struct nlattr *attr,
13561                                    struct cfg80211_wowlan *trig)
13562 {
13563         struct nlattr **tb;
13564         int err;
13565
13566         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13567         if (!tb)
13568                 return -ENOMEM;
13569
13570         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13571                 err = -EOPNOTSUPP;
13572                 goto out;
13573         }
13574
13575         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13576                                           nl80211_policy, NULL);
13577         if (err)
13578                 goto out;
13579
13580         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13581                                                    wowlan->max_nd_match_sets);
13582         err = PTR_ERR_OR_ZERO(trig->nd_config);
13583         if (err)
13584                 trig->nd_config = NULL;
13585
13586 out:
13587         kfree(tb);
13588         return err;
13589 }
13590
13591 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13592 {
13593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13594         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13595         struct cfg80211_wowlan new_triggers = {};
13596         struct cfg80211_wowlan *ntrig;
13597         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13598         int err, i;
13599         bool prev_enabled = rdev->wiphy.wowlan_config;
13600         bool regular = false;
13601
13602         if (!wowlan)
13603                 return -EOPNOTSUPP;
13604
13605         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13606                 cfg80211_rdev_free_wowlan(rdev);
13607                 rdev->wiphy.wowlan_config = NULL;
13608                 goto set_wakeup;
13609         }
13610
13611         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13612                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13613                                           nl80211_wowlan_policy, info->extack);
13614         if (err)
13615                 return err;
13616
13617         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13618                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13619                         return -EINVAL;
13620                 new_triggers.any = true;
13621         }
13622
13623         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13624                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13625                         return -EINVAL;
13626                 new_triggers.disconnect = true;
13627                 regular = true;
13628         }
13629
13630         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13631                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13632                         return -EINVAL;
13633                 new_triggers.magic_pkt = true;
13634                 regular = true;
13635         }
13636
13637         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13638                 return -EINVAL;
13639
13640         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13641                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13642                         return -EINVAL;
13643                 new_triggers.gtk_rekey_failure = true;
13644                 regular = true;
13645         }
13646
13647         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13648                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13649                         return -EINVAL;
13650                 new_triggers.eap_identity_req = true;
13651                 regular = true;
13652         }
13653
13654         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13655                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13656                         return -EINVAL;
13657                 new_triggers.four_way_handshake = true;
13658                 regular = true;
13659         }
13660
13661         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13662                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13663                         return -EINVAL;
13664                 new_triggers.rfkill_release = true;
13665                 regular = true;
13666         }
13667
13668         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13669                 struct nlattr *pat;
13670                 int n_patterns = 0;
13671                 int rem, pat_len, mask_len, pkt_offset;
13672                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13673
13674                 regular = true;
13675
13676                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13677                                     rem)
13678                         n_patterns++;
13679                 if (n_patterns > wowlan->n_patterns)
13680                         return -EINVAL;
13681
13682                 new_triggers.patterns = kcalloc(n_patterns,
13683                                                 sizeof(new_triggers.patterns[0]),
13684                                                 GFP_KERNEL);
13685                 if (!new_triggers.patterns)
13686                         return -ENOMEM;
13687
13688                 new_triggers.n_patterns = n_patterns;
13689                 i = 0;
13690
13691                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13692                                     rem) {
13693                         u8 *mask_pat;
13694
13695                         err = nla_parse_nested_deprecated(pat_tb,
13696                                                           MAX_NL80211_PKTPAT,
13697                                                           pat,
13698                                                           nl80211_packet_pattern_policy,
13699                                                           info->extack);
13700                         if (err)
13701                                 goto error;
13702
13703                         err = -EINVAL;
13704                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13705                             !pat_tb[NL80211_PKTPAT_PATTERN])
13706                                 goto error;
13707                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13708                         mask_len = DIV_ROUND_UP(pat_len, 8);
13709                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13710                                 goto error;
13711                         if (pat_len > wowlan->pattern_max_len ||
13712                             pat_len < wowlan->pattern_min_len)
13713                                 goto error;
13714
13715                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13716                                 pkt_offset = 0;
13717                         else
13718                                 pkt_offset = nla_get_u32(
13719                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13720                         if (pkt_offset > wowlan->max_pkt_offset)
13721                                 goto error;
13722                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13723
13724                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13725                         if (!mask_pat) {
13726                                 err = -ENOMEM;
13727                                 goto error;
13728                         }
13729                         new_triggers.patterns[i].mask = mask_pat;
13730                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13731                                mask_len);
13732                         mask_pat += mask_len;
13733                         new_triggers.patterns[i].pattern = mask_pat;
13734                         new_triggers.patterns[i].pattern_len = pat_len;
13735                         memcpy(mask_pat,
13736                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13737                                pat_len);
13738                         i++;
13739                 }
13740         }
13741
13742         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13743                 regular = true;
13744                 err = nl80211_parse_wowlan_tcp(
13745                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13746                         &new_triggers);
13747                 if (err)
13748                         goto error;
13749         }
13750
13751         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13752                 regular = true;
13753                 err = nl80211_parse_wowlan_nd(
13754                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13755                         &new_triggers);
13756                 if (err)
13757                         goto error;
13758         }
13759
13760         /* The 'any' trigger means the device continues operating more or less
13761          * as in its normal operation mode and wakes up the host on most of the
13762          * normal interrupts (like packet RX, ...)
13763          * It therefore makes little sense to combine with the more constrained
13764          * wakeup trigger modes.
13765          */
13766         if (new_triggers.any && regular) {
13767                 err = -EINVAL;
13768                 goto error;
13769         }
13770
13771         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13772         if (!ntrig) {
13773                 err = -ENOMEM;
13774                 goto error;
13775         }
13776         cfg80211_rdev_free_wowlan(rdev);
13777         rdev->wiphy.wowlan_config = ntrig;
13778
13779  set_wakeup:
13780         if (rdev->ops->set_wakeup &&
13781             prev_enabled != !!rdev->wiphy.wowlan_config)
13782                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13783
13784         return 0;
13785  error:
13786         for (i = 0; i < new_triggers.n_patterns; i++)
13787                 kfree(new_triggers.patterns[i].mask);
13788         kfree(new_triggers.patterns);
13789         if (new_triggers.tcp && new_triggers.tcp->sock)
13790                 sock_release(new_triggers.tcp->sock);
13791         kfree(new_triggers.tcp);
13792         kfree(new_triggers.nd_config);
13793         return err;
13794 }
13795 #endif
13796
13797 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13798                                        struct cfg80211_registered_device *rdev)
13799 {
13800         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13801         int i, j, pat_len;
13802         struct cfg80211_coalesce_rules *rule;
13803
13804         if (!rdev->coalesce->n_rules)
13805                 return 0;
13806
13807         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13808         if (!nl_rules)
13809                 return -ENOBUFS;
13810
13811         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13812                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13813                 if (!nl_rule)
13814                         return -ENOBUFS;
13815
13816                 rule = &rdev->coalesce->rules[i];
13817                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13818                                 rule->delay))
13819                         return -ENOBUFS;
13820
13821                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13822                                 rule->condition))
13823                         return -ENOBUFS;
13824
13825                 nl_pats = nla_nest_start_noflag(msg,
13826                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13827                 if (!nl_pats)
13828                         return -ENOBUFS;
13829
13830                 for (j = 0; j < rule->n_patterns; j++) {
13831                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13832                         if (!nl_pat)
13833                                 return -ENOBUFS;
13834                         pat_len = rule->patterns[j].pattern_len;
13835                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13836                                     DIV_ROUND_UP(pat_len, 8),
13837                                     rule->patterns[j].mask) ||
13838                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13839                                     rule->patterns[j].pattern) ||
13840                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13841                                         rule->patterns[j].pkt_offset))
13842                                 return -ENOBUFS;
13843                         nla_nest_end(msg, nl_pat);
13844                 }
13845                 nla_nest_end(msg, nl_pats);
13846                 nla_nest_end(msg, nl_rule);
13847         }
13848         nla_nest_end(msg, nl_rules);
13849
13850         return 0;
13851 }
13852
13853 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13854 {
13855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13856         struct sk_buff *msg;
13857         void *hdr;
13858
13859         if (!rdev->wiphy.coalesce)
13860                 return -EOPNOTSUPP;
13861
13862         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13863         if (!msg)
13864                 return -ENOMEM;
13865
13866         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13867                              NL80211_CMD_GET_COALESCE);
13868         if (!hdr)
13869                 goto nla_put_failure;
13870
13871         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13872                 goto nla_put_failure;
13873
13874         genlmsg_end(msg, hdr);
13875         return genlmsg_reply(msg, info);
13876
13877 nla_put_failure:
13878         nlmsg_free(msg);
13879         return -ENOBUFS;
13880 }
13881
13882 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13883 {
13884         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13885         int i, j;
13886         struct cfg80211_coalesce_rules *rule;
13887
13888         if (!coalesce)
13889                 return;
13890
13891         for (i = 0; i < coalesce->n_rules; i++) {
13892                 rule = &coalesce->rules[i];
13893                 for (j = 0; j < rule->n_patterns; j++)
13894                         kfree(rule->patterns[j].mask);
13895                 kfree(rule->patterns);
13896         }
13897         kfree(coalesce->rules);
13898         kfree(coalesce);
13899         rdev->coalesce = NULL;
13900 }
13901
13902 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13903                                        struct nlattr *rule,
13904                                        struct cfg80211_coalesce_rules *new_rule)
13905 {
13906         int err, i;
13907         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13908         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13909         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13910         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13911
13912         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13913                                           rule, nl80211_coalesce_policy, NULL);
13914         if (err)
13915                 return err;
13916
13917         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13918                 new_rule->delay =
13919                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13920         if (new_rule->delay > coalesce->max_delay)
13921                 return -EINVAL;
13922
13923         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13924                 new_rule->condition =
13925                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13926
13927         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13928                 return -EINVAL;
13929
13930         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13931                             rem)
13932                 n_patterns++;
13933         if (n_patterns > coalesce->n_patterns)
13934                 return -EINVAL;
13935
13936         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13937                                      GFP_KERNEL);
13938         if (!new_rule->patterns)
13939                 return -ENOMEM;
13940
13941         new_rule->n_patterns = n_patterns;
13942         i = 0;
13943
13944         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13945                             rem) {
13946                 u8 *mask_pat;
13947
13948                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13949                                                   pat,
13950                                                   nl80211_packet_pattern_policy,
13951                                                   NULL);
13952                 if (err)
13953                         return err;
13954
13955                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13956                     !pat_tb[NL80211_PKTPAT_PATTERN])
13957                         return -EINVAL;
13958                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13959                 mask_len = DIV_ROUND_UP(pat_len, 8);
13960                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13961                         return -EINVAL;
13962                 if (pat_len > coalesce->pattern_max_len ||
13963                     pat_len < coalesce->pattern_min_len)
13964                         return -EINVAL;
13965
13966                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13967                         pkt_offset = 0;
13968                 else
13969                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13970                 if (pkt_offset > coalesce->max_pkt_offset)
13971                         return -EINVAL;
13972                 new_rule->patterns[i].pkt_offset = pkt_offset;
13973
13974                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13975                 if (!mask_pat)
13976                         return -ENOMEM;
13977
13978                 new_rule->patterns[i].mask = mask_pat;
13979                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13980                        mask_len);
13981
13982                 mask_pat += mask_len;
13983                 new_rule->patterns[i].pattern = mask_pat;
13984                 new_rule->patterns[i].pattern_len = pat_len;
13985                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13986                        pat_len);
13987                 i++;
13988         }
13989
13990         return 0;
13991 }
13992
13993 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13994 {
13995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13996         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13997         struct cfg80211_coalesce new_coalesce = {};
13998         struct cfg80211_coalesce *n_coalesce;
13999         int err, rem_rule, n_rules = 0, i, j;
14000         struct nlattr *rule;
14001         struct cfg80211_coalesce_rules *tmp_rule;
14002
14003         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
14004                 return -EOPNOTSUPP;
14005
14006         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
14007                 cfg80211_rdev_free_coalesce(rdev);
14008                 rdev_set_coalesce(rdev, NULL);
14009                 return 0;
14010         }
14011
14012         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14013                             rem_rule)
14014                 n_rules++;
14015         if (n_rules > coalesce->n_rules)
14016                 return -EINVAL;
14017
14018         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14019                                      GFP_KERNEL);
14020         if (!new_coalesce.rules)
14021                 return -ENOMEM;
14022
14023         new_coalesce.n_rules = n_rules;
14024         i = 0;
14025
14026         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14027                             rem_rule) {
14028                 err = nl80211_parse_coalesce_rule(rdev, rule,
14029                                                   &new_coalesce.rules[i]);
14030                 if (err)
14031                         goto error;
14032
14033                 i++;
14034         }
14035
14036         err = rdev_set_coalesce(rdev, &new_coalesce);
14037         if (err)
14038                 goto error;
14039
14040         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14041         if (!n_coalesce) {
14042                 err = -ENOMEM;
14043                 goto error;
14044         }
14045         cfg80211_rdev_free_coalesce(rdev);
14046         rdev->coalesce = n_coalesce;
14047
14048         return 0;
14049 error:
14050         for (i = 0; i < new_coalesce.n_rules; i++) {
14051                 tmp_rule = &new_coalesce.rules[i];
14052                 for (j = 0; j < tmp_rule->n_patterns; j++)
14053                         kfree(tmp_rule->patterns[j].mask);
14054                 kfree(tmp_rule->patterns);
14055         }
14056         kfree(new_coalesce.rules);
14057
14058         return err;
14059 }
14060
14061 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14062 {
14063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14064         struct net_device *dev = info->user_ptr[1];
14065         struct wireless_dev *wdev = dev->ieee80211_ptr;
14066         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14067         struct cfg80211_gtk_rekey_data rekey_data = {};
14068         int err;
14069
14070         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14071                 return -EINVAL;
14072
14073         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14074                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14075                                           nl80211_rekey_policy, info->extack);
14076         if (err)
14077                 return err;
14078
14079         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14080             !tb[NL80211_REKEY_DATA_KCK])
14081                 return -EINVAL;
14082         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14083             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14084               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14085                 return -ERANGE;
14086         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14087             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14088               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14089              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14090                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14091                 return -ERANGE;
14092
14093         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14094         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14095         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14096         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14097         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14098         if (tb[NL80211_REKEY_DATA_AKM])
14099                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14100
14101         wdev_lock(wdev);
14102         if (!wdev->connected) {
14103                 err = -ENOTCONN;
14104                 goto out;
14105         }
14106
14107         if (!rdev->ops->set_rekey_data) {
14108                 err = -EOPNOTSUPP;
14109                 goto out;
14110         }
14111
14112         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
14113  out:
14114         wdev_unlock(wdev);
14115         return err;
14116 }
14117
14118 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14119                                              struct genl_info *info)
14120 {
14121         struct net_device *dev = info->user_ptr[1];
14122         struct wireless_dev *wdev = dev->ieee80211_ptr;
14123
14124         if (wdev->iftype != NL80211_IFTYPE_AP &&
14125             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14126                 return -EINVAL;
14127
14128         if (wdev->ap_unexpected_nlportid)
14129                 return -EBUSY;
14130
14131         wdev->ap_unexpected_nlportid = info->snd_portid;
14132         return 0;
14133 }
14134
14135 static int nl80211_probe_client(struct sk_buff *skb,
14136                                 struct genl_info *info)
14137 {
14138         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14139         struct net_device *dev = info->user_ptr[1];
14140         struct wireless_dev *wdev = dev->ieee80211_ptr;
14141         struct sk_buff *msg;
14142         void *hdr;
14143         const u8 *addr;
14144         u64 cookie;
14145         int err;
14146
14147         if (wdev->iftype != NL80211_IFTYPE_AP &&
14148             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14149                 return -EOPNOTSUPP;
14150
14151         if (!info->attrs[NL80211_ATTR_MAC])
14152                 return -EINVAL;
14153
14154         if (!rdev->ops->probe_client)
14155                 return -EOPNOTSUPP;
14156
14157         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14158         if (!msg)
14159                 return -ENOMEM;
14160
14161         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14162                              NL80211_CMD_PROBE_CLIENT);
14163         if (!hdr) {
14164                 err = -ENOBUFS;
14165                 goto free_msg;
14166         }
14167
14168         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14169
14170         err = rdev_probe_client(rdev, dev, addr, &cookie);
14171         if (err)
14172                 goto free_msg;
14173
14174         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14175                               NL80211_ATTR_PAD))
14176                 goto nla_put_failure;
14177
14178         genlmsg_end(msg, hdr);
14179
14180         return genlmsg_reply(msg, info);
14181
14182  nla_put_failure:
14183         err = -ENOBUFS;
14184  free_msg:
14185         nlmsg_free(msg);
14186         return err;
14187 }
14188
14189 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14190 {
14191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14192         struct cfg80211_beacon_registration *reg, *nreg;
14193         int rv;
14194
14195         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14196                 return -EOPNOTSUPP;
14197
14198         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14199         if (!nreg)
14200                 return -ENOMEM;
14201
14202         /* First, check if already registered. */
14203         spin_lock_bh(&rdev->beacon_registrations_lock);
14204         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14205                 if (reg->nlportid == info->snd_portid) {
14206                         rv = -EALREADY;
14207                         goto out_err;
14208                 }
14209         }
14210         /* Add it to the list */
14211         nreg->nlportid = info->snd_portid;
14212         list_add(&nreg->list, &rdev->beacon_registrations);
14213
14214         spin_unlock_bh(&rdev->beacon_registrations_lock);
14215
14216         return 0;
14217 out_err:
14218         spin_unlock_bh(&rdev->beacon_registrations_lock);
14219         kfree(nreg);
14220         return rv;
14221 }
14222
14223 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14224 {
14225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14226         struct wireless_dev *wdev = info->user_ptr[1];
14227         int err;
14228
14229         if (!rdev->ops->start_p2p_device)
14230                 return -EOPNOTSUPP;
14231
14232         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14233                 return -EOPNOTSUPP;
14234
14235         if (wdev_running(wdev))
14236                 return 0;
14237
14238         if (rfkill_blocked(rdev->wiphy.rfkill))
14239                 return -ERFKILL;
14240
14241         err = rdev_start_p2p_device(rdev, wdev);
14242         if (err)
14243                 return err;
14244
14245         wdev->is_running = true;
14246         rdev->opencount++;
14247
14248         return 0;
14249 }
14250
14251 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14252 {
14253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14254         struct wireless_dev *wdev = info->user_ptr[1];
14255
14256         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14257                 return -EOPNOTSUPP;
14258
14259         if (!rdev->ops->stop_p2p_device)
14260                 return -EOPNOTSUPP;
14261
14262         cfg80211_stop_p2p_device(rdev, wdev);
14263
14264         return 0;
14265 }
14266
14267 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14268 {
14269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14270         struct wireless_dev *wdev = info->user_ptr[1];
14271         struct cfg80211_nan_conf conf = {};
14272         int err;
14273
14274         if (wdev->iftype != NL80211_IFTYPE_NAN)
14275                 return -EOPNOTSUPP;
14276
14277         if (wdev_running(wdev))
14278                 return -EEXIST;
14279
14280         if (rfkill_blocked(rdev->wiphy.rfkill))
14281                 return -ERFKILL;
14282
14283         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14284                 return -EINVAL;
14285
14286         conf.master_pref =
14287                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14288
14289         if (info->attrs[NL80211_ATTR_BANDS]) {
14290                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14291
14292                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14293                         return -EOPNOTSUPP;
14294
14295                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14296                         return -EINVAL;
14297
14298                 conf.bands = bands;
14299         }
14300
14301         err = rdev_start_nan(rdev, wdev, &conf);
14302         if (err)
14303                 return err;
14304
14305         wdev->is_running = true;
14306         rdev->opencount++;
14307
14308         return 0;
14309 }
14310
14311 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14312 {
14313         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14314         struct wireless_dev *wdev = info->user_ptr[1];
14315
14316         if (wdev->iftype != NL80211_IFTYPE_NAN)
14317                 return -EOPNOTSUPP;
14318
14319         cfg80211_stop_nan(rdev, wdev);
14320
14321         return 0;
14322 }
14323
14324 static int validate_nan_filter(struct nlattr *filter_attr)
14325 {
14326         struct nlattr *attr;
14327         int len = 0, n_entries = 0, rem;
14328
14329         nla_for_each_nested(attr, filter_attr, rem) {
14330                 len += nla_len(attr);
14331                 n_entries++;
14332         }
14333
14334         if (len >= U8_MAX)
14335                 return -EINVAL;
14336
14337         return n_entries;
14338 }
14339
14340 static int handle_nan_filter(struct nlattr *attr_filter,
14341                              struct cfg80211_nan_func *func,
14342                              bool tx)
14343 {
14344         struct nlattr *attr;
14345         int n_entries, rem, i;
14346         struct cfg80211_nan_func_filter *filter;
14347
14348         n_entries = validate_nan_filter(attr_filter);
14349         if (n_entries < 0)
14350                 return n_entries;
14351
14352         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14353
14354         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14355         if (!filter)
14356                 return -ENOMEM;
14357
14358         i = 0;
14359         nla_for_each_nested(attr, attr_filter, rem) {
14360                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14361                 if (!filter[i].filter)
14362                         goto err;
14363
14364                 filter[i].len = nla_len(attr);
14365                 i++;
14366         }
14367         if (tx) {
14368                 func->num_tx_filters = n_entries;
14369                 func->tx_filters = filter;
14370         } else {
14371                 func->num_rx_filters = n_entries;
14372                 func->rx_filters = filter;
14373         }
14374
14375         return 0;
14376
14377 err:
14378         i = 0;
14379         nla_for_each_nested(attr, attr_filter, rem) {
14380                 kfree(filter[i].filter);
14381                 i++;
14382         }
14383         kfree(filter);
14384         return -ENOMEM;
14385 }
14386
14387 static int nl80211_nan_add_func(struct sk_buff *skb,
14388                                 struct genl_info *info)
14389 {
14390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14391         struct wireless_dev *wdev = info->user_ptr[1];
14392         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14393         struct cfg80211_nan_func *func;
14394         struct sk_buff *msg = NULL;
14395         void *hdr = NULL;
14396         int err = 0;
14397
14398         if (wdev->iftype != NL80211_IFTYPE_NAN)
14399                 return -EOPNOTSUPP;
14400
14401         if (!wdev_running(wdev))
14402                 return -ENOTCONN;
14403
14404         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14405                 return -EINVAL;
14406
14407         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14408                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14409                                           nl80211_nan_func_policy,
14410                                           info->extack);
14411         if (err)
14412                 return err;
14413
14414         func = kzalloc(sizeof(*func), GFP_KERNEL);
14415         if (!func)
14416                 return -ENOMEM;
14417
14418         func->cookie = cfg80211_assign_cookie(rdev);
14419
14420         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14421                 err = -EINVAL;
14422                 goto out;
14423         }
14424
14425
14426         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14427
14428         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14429                 err = -EINVAL;
14430                 goto out;
14431         }
14432
14433         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14434                sizeof(func->service_id));
14435
14436         func->close_range =
14437                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14438
14439         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14440                 func->serv_spec_info_len =
14441                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14442                 func->serv_spec_info =
14443                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14444                                 func->serv_spec_info_len,
14445                                 GFP_KERNEL);
14446                 if (!func->serv_spec_info) {
14447                         err = -ENOMEM;
14448                         goto out;
14449                 }
14450         }
14451
14452         if (tb[NL80211_NAN_FUNC_TTL])
14453                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14454
14455         switch (func->type) {
14456         case NL80211_NAN_FUNC_PUBLISH:
14457                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14458                         err = -EINVAL;
14459                         goto out;
14460                 }
14461
14462                 func->publish_type =
14463                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14464                 func->publish_bcast =
14465                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14466
14467                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14468                         func->publish_bcast) {
14469                         err = -EINVAL;
14470                         goto out;
14471                 }
14472                 break;
14473         case NL80211_NAN_FUNC_SUBSCRIBE:
14474                 func->subscribe_active =
14475                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14476                 break;
14477         case NL80211_NAN_FUNC_FOLLOW_UP:
14478                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14479                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14480                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14481                         err = -EINVAL;
14482                         goto out;
14483                 }
14484
14485                 func->followup_id =
14486                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14487                 func->followup_reqid =
14488                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14489                 memcpy(func->followup_dest.addr,
14490                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14491                        sizeof(func->followup_dest.addr));
14492                 if (func->ttl) {
14493                         err = -EINVAL;
14494                         goto out;
14495                 }
14496                 break;
14497         default:
14498                 err = -EINVAL;
14499                 goto out;
14500         }
14501
14502         if (tb[NL80211_NAN_FUNC_SRF]) {
14503                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14504
14505                 err = nla_parse_nested_deprecated(srf_tb,
14506                                                   NL80211_NAN_SRF_ATTR_MAX,
14507                                                   tb[NL80211_NAN_FUNC_SRF],
14508                                                   nl80211_nan_srf_policy,
14509                                                   info->extack);
14510                 if (err)
14511                         goto out;
14512
14513                 func->srf_include =
14514                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14515
14516                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14517                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14518                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14519                                 err = -EINVAL;
14520                                 goto out;
14521                         }
14522
14523                         func->srf_bf_len =
14524                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14525                         func->srf_bf =
14526                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14527                                         func->srf_bf_len, GFP_KERNEL);
14528                         if (!func->srf_bf) {
14529                                 err = -ENOMEM;
14530                                 goto out;
14531                         }
14532
14533                         func->srf_bf_idx =
14534                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14535                 } else {
14536                         struct nlattr *attr, *mac_attr =
14537                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14538                         int n_entries, rem, i = 0;
14539
14540                         if (!mac_attr) {
14541                                 err = -EINVAL;
14542                                 goto out;
14543                         }
14544
14545                         n_entries = validate_acl_mac_addrs(mac_attr);
14546                         if (n_entries <= 0) {
14547                                 err = -EINVAL;
14548                                 goto out;
14549                         }
14550
14551                         func->srf_num_macs = n_entries;
14552                         func->srf_macs =
14553                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14554                                         GFP_KERNEL);
14555                         if (!func->srf_macs) {
14556                                 err = -ENOMEM;
14557                                 goto out;
14558                         }
14559
14560                         nla_for_each_nested(attr, mac_attr, rem)
14561                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14562                                        sizeof(*func->srf_macs));
14563                 }
14564         }
14565
14566         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14567                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14568                                         func, true);
14569                 if (err)
14570                         goto out;
14571         }
14572
14573         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14574                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14575                                         func, false);
14576                 if (err)
14577                         goto out;
14578         }
14579
14580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14581         if (!msg) {
14582                 err = -ENOMEM;
14583                 goto out;
14584         }
14585
14586         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14587                              NL80211_CMD_ADD_NAN_FUNCTION);
14588         /* This can't really happen - we just allocated 4KB */
14589         if (WARN_ON(!hdr)) {
14590                 err = -ENOMEM;
14591                 goto out;
14592         }
14593
14594         err = rdev_add_nan_func(rdev, wdev, func);
14595 out:
14596         if (err < 0) {
14597                 cfg80211_free_nan_func(func);
14598                 nlmsg_free(msg);
14599                 return err;
14600         }
14601
14602         /* propagate the instance id and cookie to userspace  */
14603         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14604                               NL80211_ATTR_PAD))
14605                 goto nla_put_failure;
14606
14607         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14608         if (!func_attr)
14609                 goto nla_put_failure;
14610
14611         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14612                        func->instance_id))
14613                 goto nla_put_failure;
14614
14615         nla_nest_end(msg, func_attr);
14616
14617         genlmsg_end(msg, hdr);
14618         return genlmsg_reply(msg, info);
14619
14620 nla_put_failure:
14621         nlmsg_free(msg);
14622         return -ENOBUFS;
14623 }
14624
14625 static int nl80211_nan_del_func(struct sk_buff *skb,
14626                                struct genl_info *info)
14627 {
14628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14629         struct wireless_dev *wdev = info->user_ptr[1];
14630         u64 cookie;
14631
14632         if (wdev->iftype != NL80211_IFTYPE_NAN)
14633                 return -EOPNOTSUPP;
14634
14635         if (!wdev_running(wdev))
14636                 return -ENOTCONN;
14637
14638         if (!info->attrs[NL80211_ATTR_COOKIE])
14639                 return -EINVAL;
14640
14641         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14642
14643         rdev_del_nan_func(rdev, wdev, cookie);
14644
14645         return 0;
14646 }
14647
14648 static int nl80211_nan_change_config(struct sk_buff *skb,
14649                                      struct genl_info *info)
14650 {
14651         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14652         struct wireless_dev *wdev = info->user_ptr[1];
14653         struct cfg80211_nan_conf conf = {};
14654         u32 changed = 0;
14655
14656         if (wdev->iftype != NL80211_IFTYPE_NAN)
14657                 return -EOPNOTSUPP;
14658
14659         if (!wdev_running(wdev))
14660                 return -ENOTCONN;
14661
14662         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14663                 conf.master_pref =
14664                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14665                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14666                         return -EINVAL;
14667
14668                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14669         }
14670
14671         if (info->attrs[NL80211_ATTR_BANDS]) {
14672                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14673
14674                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14675                         return -EOPNOTSUPP;
14676
14677                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14678                         return -EINVAL;
14679
14680                 conf.bands = bands;
14681                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14682         }
14683
14684         if (!changed)
14685                 return -EINVAL;
14686
14687         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14688 }
14689
14690 void cfg80211_nan_match(struct wireless_dev *wdev,
14691                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14692 {
14693         struct wiphy *wiphy = wdev->wiphy;
14694         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14695         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14696         struct sk_buff *msg;
14697         void *hdr;
14698
14699         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14700                 return;
14701
14702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14703         if (!msg)
14704                 return;
14705
14706         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14707         if (!hdr) {
14708                 nlmsg_free(msg);
14709                 return;
14710         }
14711
14712         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14713             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14714                                          wdev->netdev->ifindex)) ||
14715             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14716                               NL80211_ATTR_PAD))
14717                 goto nla_put_failure;
14718
14719         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14720                               NL80211_ATTR_PAD) ||
14721             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14722                 goto nla_put_failure;
14723
14724         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14725         if (!match_attr)
14726                 goto nla_put_failure;
14727
14728         local_func_attr = nla_nest_start_noflag(msg,
14729                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14730         if (!local_func_attr)
14731                 goto nla_put_failure;
14732
14733         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14734                 goto nla_put_failure;
14735
14736         nla_nest_end(msg, local_func_attr);
14737
14738         peer_func_attr = nla_nest_start_noflag(msg,
14739                                                NL80211_NAN_MATCH_FUNC_PEER);
14740         if (!peer_func_attr)
14741                 goto nla_put_failure;
14742
14743         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14744             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14745                 goto nla_put_failure;
14746
14747         if (match->info && match->info_len &&
14748             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14749                     match->info))
14750                 goto nla_put_failure;
14751
14752         nla_nest_end(msg, peer_func_attr);
14753         nla_nest_end(msg, match_attr);
14754         genlmsg_end(msg, hdr);
14755
14756         if (!wdev->owner_nlportid)
14757                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14758                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14759         else
14760                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14761                                 wdev->owner_nlportid);
14762
14763         return;
14764
14765 nla_put_failure:
14766         nlmsg_free(msg);
14767 }
14768 EXPORT_SYMBOL(cfg80211_nan_match);
14769
14770 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14771                                   u8 inst_id,
14772                                   enum nl80211_nan_func_term_reason reason,
14773                                   u64 cookie, gfp_t gfp)
14774 {
14775         struct wiphy *wiphy = wdev->wiphy;
14776         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14777         struct sk_buff *msg;
14778         struct nlattr *func_attr;
14779         void *hdr;
14780
14781         if (WARN_ON(!inst_id))
14782                 return;
14783
14784         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14785         if (!msg)
14786                 return;
14787
14788         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14789         if (!hdr) {
14790                 nlmsg_free(msg);
14791                 return;
14792         }
14793
14794         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14795             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14796                                          wdev->netdev->ifindex)) ||
14797             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14798                               NL80211_ATTR_PAD))
14799                 goto nla_put_failure;
14800
14801         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14802                               NL80211_ATTR_PAD))
14803                 goto nla_put_failure;
14804
14805         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14806         if (!func_attr)
14807                 goto nla_put_failure;
14808
14809         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14810             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14811                 goto nla_put_failure;
14812
14813         nla_nest_end(msg, func_attr);
14814         genlmsg_end(msg, hdr);
14815
14816         if (!wdev->owner_nlportid)
14817                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14818                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14819         else
14820                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14821                                 wdev->owner_nlportid);
14822
14823         return;
14824
14825 nla_put_failure:
14826         nlmsg_free(msg);
14827 }
14828 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14829
14830 static int nl80211_get_protocol_features(struct sk_buff *skb,
14831                                          struct genl_info *info)
14832 {
14833         void *hdr;
14834         struct sk_buff *msg;
14835
14836         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14837         if (!msg)
14838                 return -ENOMEM;
14839
14840         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14841                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14842         if (!hdr)
14843                 goto nla_put_failure;
14844
14845         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14846                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14847                 goto nla_put_failure;
14848
14849         genlmsg_end(msg, hdr);
14850         return genlmsg_reply(msg, info);
14851
14852  nla_put_failure:
14853         kfree_skb(msg);
14854         return -ENOBUFS;
14855 }
14856
14857 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14858 {
14859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14860         struct cfg80211_update_ft_ies_params ft_params;
14861         struct net_device *dev = info->user_ptr[1];
14862
14863         if (!rdev->ops->update_ft_ies)
14864                 return -EOPNOTSUPP;
14865
14866         if (!info->attrs[NL80211_ATTR_MDID] ||
14867             !info->attrs[NL80211_ATTR_IE])
14868                 return -EINVAL;
14869
14870         memset(&ft_params, 0, sizeof(ft_params));
14871         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14872         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14873         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14874
14875         return rdev_update_ft_ies(rdev, dev, &ft_params);
14876 }
14877
14878 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14879                                        struct genl_info *info)
14880 {
14881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14882         struct wireless_dev *wdev = info->user_ptr[1];
14883         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14884         u16 duration;
14885         int ret;
14886
14887         if (!rdev->ops->crit_proto_start)
14888                 return -EOPNOTSUPP;
14889
14890         if (WARN_ON(!rdev->ops->crit_proto_stop))
14891                 return -EINVAL;
14892
14893         if (rdev->crit_proto_nlportid)
14894                 return -EBUSY;
14895
14896         /* determine protocol if provided */
14897         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14898                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14899
14900         if (proto >= NUM_NL80211_CRIT_PROTO)
14901                 return -EINVAL;
14902
14903         /* timeout must be provided */
14904         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14905                 return -EINVAL;
14906
14907         duration =
14908                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14909
14910         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14911         if (!ret)
14912                 rdev->crit_proto_nlportid = info->snd_portid;
14913
14914         return ret;
14915 }
14916
14917 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14918                                       struct genl_info *info)
14919 {
14920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14921         struct wireless_dev *wdev = info->user_ptr[1];
14922
14923         if (!rdev->ops->crit_proto_stop)
14924                 return -EOPNOTSUPP;
14925
14926         if (rdev->crit_proto_nlportid) {
14927                 rdev->crit_proto_nlportid = 0;
14928                 rdev_crit_proto_stop(rdev, wdev);
14929         }
14930         return 0;
14931 }
14932
14933 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14934                                        struct nlattr *attr,
14935                                        struct netlink_ext_ack *extack)
14936 {
14937         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14938                 if (attr->nla_type & NLA_F_NESTED) {
14939                         NL_SET_ERR_MSG_ATTR(extack, attr,
14940                                             "unexpected nested data");
14941                         return -EINVAL;
14942                 }
14943
14944                 return 0;
14945         }
14946
14947         if (!(attr->nla_type & NLA_F_NESTED)) {
14948                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14949                 return -EINVAL;
14950         }
14951
14952         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14953 }
14954
14955 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14956 {
14957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14958         struct wireless_dev *wdev =
14959                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14960                                            info->attrs);
14961         int i, err;
14962         u32 vid, subcmd;
14963
14964         if (!rdev->wiphy.vendor_commands)
14965                 return -EOPNOTSUPP;
14966
14967         if (IS_ERR(wdev)) {
14968                 err = PTR_ERR(wdev);
14969                 if (err != -EINVAL)
14970                         return err;
14971                 wdev = NULL;
14972         } else if (wdev->wiphy != &rdev->wiphy) {
14973                 return -EINVAL;
14974         }
14975
14976         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14977             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14978                 return -EINVAL;
14979
14980         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14981         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14982         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14983                 const struct wiphy_vendor_command *vcmd;
14984                 void *data = NULL;
14985                 int len = 0;
14986
14987                 vcmd = &rdev->wiphy.vendor_commands[i];
14988
14989                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14990                         continue;
14991
14992                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14993                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14994                         if (!wdev)
14995                                 return -EINVAL;
14996                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14997                             !wdev->netdev)
14998                                 return -EINVAL;
14999
15000                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15001                                 if (!wdev_running(wdev))
15002                                         return -ENETDOWN;
15003                         }
15004                 } else {
15005                         wdev = NULL;
15006                 }
15007
15008                 if (!vcmd->doit)
15009                         return -EOPNOTSUPP;
15010
15011                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
15012                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15013                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15014
15015                         err = nl80211_vendor_check_policy(vcmd,
15016                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
15017                                         info->extack);
15018                         if (err)
15019                                 return err;
15020                 }
15021
15022                 rdev->cur_cmd_info = info;
15023                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
15024                 rdev->cur_cmd_info = NULL;
15025                 return err;
15026         }
15027
15028         return -EOPNOTSUPP;
15029 }
15030
15031 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15032                                        struct netlink_callback *cb,
15033                                        struct cfg80211_registered_device **rdev,
15034                                        struct wireless_dev **wdev)
15035 {
15036         struct nlattr **attrbuf;
15037         u32 vid, subcmd;
15038         unsigned int i;
15039         int vcmd_idx = -1;
15040         int err;
15041         void *data = NULL;
15042         unsigned int data_len = 0;
15043
15044         if (cb->args[0]) {
15045                 /* subtract the 1 again here */
15046                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15047                 struct wireless_dev *tmp;
15048
15049                 if (!wiphy)
15050                         return -ENODEV;
15051                 *rdev = wiphy_to_rdev(wiphy);
15052                 *wdev = NULL;
15053
15054                 if (cb->args[1]) {
15055                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15056                                 if (tmp->identifier == cb->args[1] - 1) {
15057                                         *wdev = tmp;
15058                                         break;
15059                                 }
15060                         }
15061                 }
15062
15063                 /* keep rtnl locked in successful case */
15064                 return 0;
15065         }
15066
15067         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15068         if (!attrbuf)
15069                 return -ENOMEM;
15070
15071         err = nlmsg_parse_deprecated(cb->nlh,
15072                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15073                                      attrbuf, nl80211_fam.maxattr,
15074                                      nl80211_policy, NULL);
15075         if (err)
15076                 goto out;
15077
15078         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15079             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15080                 err = -EINVAL;
15081                 goto out;
15082         }
15083
15084         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15085         if (IS_ERR(*wdev))
15086                 *wdev = NULL;
15087
15088         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15089         if (IS_ERR(*rdev)) {
15090                 err = PTR_ERR(*rdev);
15091                 goto out;
15092         }
15093
15094         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15095         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15096
15097         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15098                 const struct wiphy_vendor_command *vcmd;
15099
15100                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15101
15102                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15103                         continue;
15104
15105                 if (!vcmd->dumpit) {
15106                         err = -EOPNOTSUPP;
15107                         goto out;
15108                 }
15109
15110                 vcmd_idx = i;
15111                 break;
15112         }
15113
15114         if (vcmd_idx < 0) {
15115                 err = -EOPNOTSUPP;
15116                 goto out;
15117         }
15118
15119         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15120                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15121                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15122
15123                 err = nl80211_vendor_check_policy(
15124                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15125                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15126                                 cb->extack);
15127                 if (err)
15128                         goto out;
15129         }
15130
15131         /* 0 is the first index - add 1 to parse only once */
15132         cb->args[0] = (*rdev)->wiphy_idx + 1;
15133         /* add 1 to know if it was NULL */
15134         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15135         cb->args[2] = vcmd_idx;
15136         cb->args[3] = (unsigned long)data;
15137         cb->args[4] = data_len;
15138
15139         /* keep rtnl locked in successful case */
15140         err = 0;
15141 out:
15142         kfree(attrbuf);
15143         return err;
15144 }
15145
15146 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15147                                    struct netlink_callback *cb)
15148 {
15149         struct cfg80211_registered_device *rdev;
15150         struct wireless_dev *wdev;
15151         unsigned int vcmd_idx;
15152         const struct wiphy_vendor_command *vcmd;
15153         void *data;
15154         int data_len;
15155         int err;
15156         struct nlattr *vendor_data;
15157
15158         rtnl_lock();
15159         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15160         if (err)
15161                 goto out;
15162
15163         vcmd_idx = cb->args[2];
15164         data = (void *)cb->args[3];
15165         data_len = cb->args[4];
15166         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15167
15168         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15169                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15170                 if (!wdev) {
15171                         err = -EINVAL;
15172                         goto out;
15173                 }
15174                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15175                     !wdev->netdev) {
15176                         err = -EINVAL;
15177                         goto out;
15178                 }
15179
15180                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15181                         if (!wdev_running(wdev)) {
15182                                 err = -ENETDOWN;
15183                                 goto out;
15184                         }
15185                 }
15186         }
15187
15188         while (1) {
15189                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15190                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15191                                            NL80211_CMD_VENDOR);
15192                 if (!hdr)
15193                         break;
15194
15195                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15196                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15197                                                wdev_id(wdev),
15198                                                NL80211_ATTR_PAD))) {
15199                         genlmsg_cancel(skb, hdr);
15200                         break;
15201                 }
15202
15203                 vendor_data = nla_nest_start_noflag(skb,
15204                                                     NL80211_ATTR_VENDOR_DATA);
15205                 if (!vendor_data) {
15206                         genlmsg_cancel(skb, hdr);
15207                         break;
15208                 }
15209
15210                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15211                                    (unsigned long *)&cb->args[5]);
15212                 nla_nest_end(skb, vendor_data);
15213
15214                 if (err == -ENOBUFS || err == -ENOENT) {
15215                         genlmsg_cancel(skb, hdr);
15216                         break;
15217                 } else if (err <= 0) {
15218                         genlmsg_cancel(skb, hdr);
15219                         goto out;
15220                 }
15221
15222                 genlmsg_end(skb, hdr);
15223         }
15224
15225         err = skb->len;
15226  out:
15227         rtnl_unlock();
15228         return err;
15229 }
15230
15231 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15232                                            enum nl80211_commands cmd,
15233                                            enum nl80211_attrs attr,
15234                                            int approxlen)
15235 {
15236         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15237
15238         if (WARN_ON(!rdev->cur_cmd_info))
15239                 return NULL;
15240
15241         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15242                                            rdev->cur_cmd_info->snd_portid,
15243                                            rdev->cur_cmd_info->snd_seq,
15244                                            cmd, attr, NULL, GFP_KERNEL);
15245 }
15246 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15247
15248 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15249 {
15250         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15251         void *hdr = ((void **)skb->cb)[1];
15252         struct nlattr *data = ((void **)skb->cb)[2];
15253
15254         /* clear CB data for netlink core to own from now on */
15255         memset(skb->cb, 0, sizeof(skb->cb));
15256
15257         if (WARN_ON(!rdev->cur_cmd_info)) {
15258                 kfree_skb(skb);
15259                 return -EINVAL;
15260         }
15261
15262         nla_nest_end(skb, data);
15263         genlmsg_end(skb, hdr);
15264         return genlmsg_reply(skb, rdev->cur_cmd_info);
15265 }
15266 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15267
15268 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15269 {
15270         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15271
15272         if (WARN_ON(!rdev->cur_cmd_info))
15273                 return 0;
15274
15275         return rdev->cur_cmd_info->snd_portid;
15276 }
15277 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15278
15279 static int nl80211_set_qos_map(struct sk_buff *skb,
15280                                struct genl_info *info)
15281 {
15282         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15283         struct cfg80211_qos_map *qos_map = NULL;
15284         struct net_device *dev = info->user_ptr[1];
15285         u8 *pos, len, num_des, des_len, des;
15286         int ret;
15287
15288         if (!rdev->ops->set_qos_map)
15289                 return -EOPNOTSUPP;
15290
15291         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15292                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15293                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15294
15295                 if (len % 2)
15296                         return -EINVAL;
15297
15298                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15299                 if (!qos_map)
15300                         return -ENOMEM;
15301
15302                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15303                 if (num_des) {
15304                         des_len = num_des *
15305                                 sizeof(struct cfg80211_dscp_exception);
15306                         memcpy(qos_map->dscp_exception, pos, des_len);
15307                         qos_map->num_des = num_des;
15308                         for (des = 0; des < num_des; des++) {
15309                                 if (qos_map->dscp_exception[des].up > 7) {
15310                                         kfree(qos_map);
15311                                         return -EINVAL;
15312                                 }
15313                         }
15314                         pos += des_len;
15315                 }
15316                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15317         }
15318
15319         wdev_lock(dev->ieee80211_ptr);
15320         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15321         if (!ret)
15322                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15323         wdev_unlock(dev->ieee80211_ptr);
15324
15325         kfree(qos_map);
15326         return ret;
15327 }
15328
15329 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15330 {
15331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15332         struct net_device *dev = info->user_ptr[1];
15333         struct wireless_dev *wdev = dev->ieee80211_ptr;
15334         const u8 *peer;
15335         u8 tsid, up;
15336         u16 admitted_time = 0;
15337         int err;
15338
15339         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15340                 return -EOPNOTSUPP;
15341
15342         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15343             !info->attrs[NL80211_ATTR_USER_PRIO])
15344                 return -EINVAL;
15345
15346         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15347         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15348
15349         /* WMM uses TIDs 0-7 even for TSPEC */
15350         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15351                 /* TODO: handle 802.11 TSPEC/admission control
15352                  * need more attributes for that (e.g. BA session requirement);
15353                  * change the WMM adminssion test above to allow both then
15354                  */
15355                 return -EINVAL;
15356         }
15357
15358         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15359
15360         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15361                 admitted_time =
15362                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15363                 if (!admitted_time)
15364                         return -EINVAL;
15365         }
15366
15367         wdev_lock(wdev);
15368         switch (wdev->iftype) {
15369         case NL80211_IFTYPE_STATION:
15370         case NL80211_IFTYPE_P2P_CLIENT:
15371                 if (wdev->connected)
15372                         break;
15373                 err = -ENOTCONN;
15374                 goto out;
15375         default:
15376                 err = -EOPNOTSUPP;
15377                 goto out;
15378         }
15379
15380         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15381
15382  out:
15383         wdev_unlock(wdev);
15384         return err;
15385 }
15386
15387 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15388 {
15389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15390         struct net_device *dev = info->user_ptr[1];
15391         struct wireless_dev *wdev = dev->ieee80211_ptr;
15392         const u8 *peer;
15393         u8 tsid;
15394         int err;
15395
15396         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15397                 return -EINVAL;
15398
15399         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15400         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15401
15402         wdev_lock(wdev);
15403         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15404         wdev_unlock(wdev);
15405
15406         return err;
15407 }
15408
15409 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15410                                        struct genl_info *info)
15411 {
15412         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15413         struct net_device *dev = info->user_ptr[1];
15414         struct wireless_dev *wdev = dev->ieee80211_ptr;
15415         struct cfg80211_chan_def chandef = {};
15416         const u8 *addr;
15417         u8 oper_class;
15418         int err;
15419
15420         if (!rdev->ops->tdls_channel_switch ||
15421             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15422                 return -EOPNOTSUPP;
15423
15424         switch (dev->ieee80211_ptr->iftype) {
15425         case NL80211_IFTYPE_STATION:
15426         case NL80211_IFTYPE_P2P_CLIENT:
15427                 break;
15428         default:
15429                 return -EOPNOTSUPP;
15430         }
15431
15432         if (!info->attrs[NL80211_ATTR_MAC] ||
15433             !info->attrs[NL80211_ATTR_OPER_CLASS])
15434                 return -EINVAL;
15435
15436         err = nl80211_parse_chandef(rdev, info, &chandef);
15437         if (err)
15438                 return err;
15439
15440         /*
15441          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15442          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15443          * specification is not defined for them.
15444          */
15445         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15446             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15447             chandef.width != NL80211_CHAN_WIDTH_20)
15448                 return -EINVAL;
15449
15450         /* we will be active on the TDLS link */
15451         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15452                                            wdev->iftype))
15453                 return -EINVAL;
15454
15455         /* don't allow switching to DFS channels */
15456         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15457                 return -EINVAL;
15458
15459         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15460         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15461
15462         wdev_lock(wdev);
15463         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15464         wdev_unlock(wdev);
15465
15466         return err;
15467 }
15468
15469 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15470                                               struct genl_info *info)
15471 {
15472         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15473         struct net_device *dev = info->user_ptr[1];
15474         struct wireless_dev *wdev = dev->ieee80211_ptr;
15475         const u8 *addr;
15476
15477         if (!rdev->ops->tdls_channel_switch ||
15478             !rdev->ops->tdls_cancel_channel_switch ||
15479             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15480                 return -EOPNOTSUPP;
15481
15482         switch (dev->ieee80211_ptr->iftype) {
15483         case NL80211_IFTYPE_STATION:
15484         case NL80211_IFTYPE_P2P_CLIENT:
15485                 break;
15486         default:
15487                 return -EOPNOTSUPP;
15488         }
15489
15490         if (!info->attrs[NL80211_ATTR_MAC])
15491                 return -EINVAL;
15492
15493         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15494
15495         wdev_lock(wdev);
15496         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15497         wdev_unlock(wdev);
15498
15499         return 0;
15500 }
15501
15502 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15503                                             struct genl_info *info)
15504 {
15505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15506         struct net_device *dev = info->user_ptr[1];
15507         struct wireless_dev *wdev = dev->ieee80211_ptr;
15508         const struct nlattr *nla;
15509         bool enabled;
15510
15511         if (!rdev->ops->set_multicast_to_unicast)
15512                 return -EOPNOTSUPP;
15513
15514         if (wdev->iftype != NL80211_IFTYPE_AP &&
15515             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15516                 return -EOPNOTSUPP;
15517
15518         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15519         enabled = nla_get_flag(nla);
15520
15521         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15522 }
15523
15524 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15525 {
15526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15527         struct net_device *dev = info->user_ptr[1];
15528         struct wireless_dev *wdev = dev->ieee80211_ptr;
15529         struct cfg80211_pmk_conf pmk_conf = {};
15530         int ret;
15531
15532         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15533             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15534                 return -EOPNOTSUPP;
15535
15536         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15537                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15538                 return -EOPNOTSUPP;
15539
15540         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15541                 return -EINVAL;
15542
15543         wdev_lock(wdev);
15544         if (!wdev->connected) {
15545                 ret = -ENOTCONN;
15546                 goto out;
15547         }
15548
15549         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15550         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15551                 ret = -EINVAL;
15552                 goto out;
15553         }
15554
15555         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15556         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15557         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15558             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15559                 ret = -EINVAL;
15560                 goto out;
15561         }
15562
15563         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15564                 pmk_conf.pmk_r0_name =
15565                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15566
15567         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15568 out:
15569         wdev_unlock(wdev);
15570         return ret;
15571 }
15572
15573 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15574 {
15575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15576         struct net_device *dev = info->user_ptr[1];
15577         struct wireless_dev *wdev = dev->ieee80211_ptr;
15578         const u8 *aa;
15579         int ret;
15580
15581         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15582             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15583                 return -EOPNOTSUPP;
15584
15585         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15586                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15587                 return -EOPNOTSUPP;
15588
15589         if (!info->attrs[NL80211_ATTR_MAC])
15590                 return -EINVAL;
15591
15592         wdev_lock(wdev);
15593         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15594         ret = rdev_del_pmk(rdev, dev, aa);
15595         wdev_unlock(wdev);
15596
15597         return ret;
15598 }
15599
15600 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15601 {
15602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15603         struct net_device *dev = info->user_ptr[1];
15604         struct cfg80211_external_auth_params params;
15605
15606         if (!rdev->ops->external_auth)
15607                 return -EOPNOTSUPP;
15608
15609         if (!info->attrs[NL80211_ATTR_SSID] &&
15610             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15611             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15612                 return -EINVAL;
15613
15614         if (!info->attrs[NL80211_ATTR_BSSID])
15615                 return -EINVAL;
15616
15617         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15618                 return -EINVAL;
15619
15620         memset(&params, 0, sizeof(params));
15621
15622         if (info->attrs[NL80211_ATTR_SSID]) {
15623                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15624                 if (params.ssid.ssid_len == 0)
15625                         return -EINVAL;
15626                 memcpy(params.ssid.ssid,
15627                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15628                        params.ssid.ssid_len);
15629         }
15630
15631         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15632                ETH_ALEN);
15633
15634         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15635
15636         if (info->attrs[NL80211_ATTR_PMKID])
15637                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15638
15639         return rdev_external_auth(rdev, dev, &params);
15640 }
15641
15642 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15643 {
15644         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15646         struct net_device *dev = info->user_ptr[1];
15647         struct wireless_dev *wdev = dev->ieee80211_ptr;
15648         const u8 *buf;
15649         size_t len;
15650         u8 *dest;
15651         u16 proto;
15652         bool noencrypt;
15653         u64 cookie = 0;
15654         int link_id;
15655         int err;
15656
15657         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15658                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15659                 return -EOPNOTSUPP;
15660
15661         if (!rdev->ops->tx_control_port)
15662                 return -EOPNOTSUPP;
15663
15664         if (!info->attrs[NL80211_ATTR_FRAME] ||
15665             !info->attrs[NL80211_ATTR_MAC] ||
15666             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15667                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15668                 return -EINVAL;
15669         }
15670
15671         wdev_lock(wdev);
15672
15673         switch (wdev->iftype) {
15674         case NL80211_IFTYPE_AP:
15675         case NL80211_IFTYPE_P2P_GO:
15676         case NL80211_IFTYPE_MESH_POINT:
15677                 break;
15678         case NL80211_IFTYPE_ADHOC:
15679                 if (wdev->u.ibss.current_bss)
15680                         break;
15681                 err = -ENOTCONN;
15682                 goto out;
15683         case NL80211_IFTYPE_STATION:
15684         case NL80211_IFTYPE_P2P_CLIENT:
15685                 if (wdev->connected)
15686                         break;
15687                 err = -ENOTCONN;
15688                 goto out;
15689         default:
15690                 err = -EOPNOTSUPP;
15691                 goto out;
15692         }
15693
15694         wdev_unlock(wdev);
15695
15696         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15697         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15698         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15699         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15700         noencrypt =
15701                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15702
15703         link_id = nl80211_link_id_or_invalid(info->attrs);
15704
15705         err = rdev_tx_control_port(rdev, dev, buf, len,
15706                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15707                                    dont_wait_for_ack ? NULL : &cookie);
15708         if (!err && !dont_wait_for_ack)
15709                 nl_set_extack_cookie_u64(info->extack, cookie);
15710         return err;
15711  out:
15712         wdev_unlock(wdev);
15713         return err;
15714 }
15715
15716 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15717                                            struct genl_info *info)
15718 {
15719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15720         struct net_device *dev = info->user_ptr[1];
15721         struct wireless_dev *wdev = dev->ieee80211_ptr;
15722         struct cfg80211_ftm_responder_stats ftm_stats = {};
15723         unsigned int link_id = nl80211_link_id(info->attrs);
15724         struct sk_buff *msg;
15725         void *hdr;
15726         struct nlattr *ftm_stats_attr;
15727         int err;
15728
15729         if (wdev->iftype != NL80211_IFTYPE_AP ||
15730             !wdev->links[link_id].ap.beacon_interval)
15731                 return -EOPNOTSUPP;
15732
15733         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15734         if (err)
15735                 return err;
15736
15737         if (!ftm_stats.filled)
15738                 return -ENODATA;
15739
15740         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15741         if (!msg)
15742                 return -ENOMEM;
15743
15744         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15745                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15746         if (!hdr)
15747                 goto nla_put_failure;
15748
15749         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15750                 goto nla_put_failure;
15751
15752         ftm_stats_attr = nla_nest_start_noflag(msg,
15753                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15754         if (!ftm_stats_attr)
15755                 goto nla_put_failure;
15756
15757 #define SET_FTM(field, name, type)                                       \
15758         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15759             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15760                              ftm_stats.field))                           \
15761                 goto nla_put_failure; } while (0)
15762 #define SET_FTM_U64(field, name)                                         \
15763         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15764             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15765                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15766                 goto nla_put_failure; } while (0)
15767
15768         SET_FTM(success_num, SUCCESS_NUM, u32);
15769         SET_FTM(partial_num, PARTIAL_NUM, u32);
15770         SET_FTM(failed_num, FAILED_NUM, u32);
15771         SET_FTM(asap_num, ASAP_NUM, u32);
15772         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15773         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15774         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15775         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15776         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15777 #undef SET_FTM
15778
15779         nla_nest_end(msg, ftm_stats_attr);
15780
15781         genlmsg_end(msg, hdr);
15782         return genlmsg_reply(msg, info);
15783
15784 nla_put_failure:
15785         nlmsg_free(msg);
15786         return -ENOBUFS;
15787 }
15788
15789 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15790 {
15791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15792         struct cfg80211_update_owe_info owe_info;
15793         struct net_device *dev = info->user_ptr[1];
15794
15795         if (!rdev->ops->update_owe_info)
15796                 return -EOPNOTSUPP;
15797
15798         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15799             !info->attrs[NL80211_ATTR_MAC])
15800                 return -EINVAL;
15801
15802         memset(&owe_info, 0, sizeof(owe_info));
15803         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15804         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15805
15806         if (info->attrs[NL80211_ATTR_IE]) {
15807                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15808                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15809         }
15810
15811         return rdev_update_owe_info(rdev, dev, &owe_info);
15812 }
15813
15814 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15815 {
15816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15817         struct net_device *dev = info->user_ptr[1];
15818         struct wireless_dev *wdev = dev->ieee80211_ptr;
15819         struct station_info sinfo = {};
15820         const u8 *buf;
15821         size_t len;
15822         u8 *dest;
15823         int err;
15824
15825         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15826                 return -EOPNOTSUPP;
15827
15828         if (!info->attrs[NL80211_ATTR_MAC] ||
15829             !info->attrs[NL80211_ATTR_FRAME]) {
15830                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15831                 return -EINVAL;
15832         }
15833
15834         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15835                 return -EOPNOTSUPP;
15836
15837         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15838         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15839         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15840
15841         if (len < sizeof(struct ethhdr))
15842                 return -EINVAL;
15843
15844         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15845             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15846                 return -EINVAL;
15847
15848         err = rdev_get_station(rdev, dev, dest, &sinfo);
15849         if (err)
15850                 return err;
15851
15852         cfg80211_sinfo_release_content(&sinfo);
15853
15854         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15855 }
15856
15857 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15858                           struct nlattr *attrs[], struct net_device *dev,
15859                           struct cfg80211_tid_cfg *tid_conf,
15860                           struct genl_info *info, const u8 *peer,
15861                           unsigned int link_id)
15862 {
15863         struct netlink_ext_ack *extack = info->extack;
15864         u64 mask;
15865         int err;
15866
15867         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15868                 return -EINVAL;
15869
15870         tid_conf->config_override =
15871                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15872         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15873
15874         if (tid_conf->config_override) {
15875                 if (rdev->ops->reset_tid_config) {
15876                         err = rdev_reset_tid_config(rdev, dev, peer,
15877                                                     tid_conf->tids);
15878                         if (err)
15879                                 return err;
15880                 } else {
15881                         return -EINVAL;
15882                 }
15883         }
15884
15885         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15886                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15887                 tid_conf->noack =
15888                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15889         }
15890
15891         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15892                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15893                 tid_conf->retry_short =
15894                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15895
15896                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15897                         return -EINVAL;
15898         }
15899
15900         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15901                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15902                 tid_conf->retry_long =
15903                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15904
15905                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15906                         return -EINVAL;
15907         }
15908
15909         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15910                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15911                 tid_conf->ampdu =
15912                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15913         }
15914
15915         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15916                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15917                 tid_conf->rtscts =
15918                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15919         }
15920
15921         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15922                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15923                 tid_conf->amsdu =
15924                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15925         }
15926
15927         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15928                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15929
15930                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15931
15932                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15933                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15934                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15935                                                     &tid_conf->txrate_mask, dev,
15936                                                     true, link_id);
15937                         if (err)
15938                                 return err;
15939
15940                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15941                 }
15942                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15943         }
15944
15945         if (peer)
15946                 mask = rdev->wiphy.tid_config_support.peer;
15947         else
15948                 mask = rdev->wiphy.tid_config_support.vif;
15949
15950         if (tid_conf->mask & ~mask) {
15951                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15952                 return -ENOTSUPP;
15953         }
15954
15955         return 0;
15956 }
15957
15958 static int nl80211_set_tid_config(struct sk_buff *skb,
15959                                   struct genl_info *info)
15960 {
15961         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15962         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15963         unsigned int link_id = nl80211_link_id(info->attrs);
15964         struct net_device *dev = info->user_ptr[1];
15965         struct cfg80211_tid_config *tid_config;
15966         struct nlattr *tid;
15967         int conf_idx = 0, rem_conf;
15968         int ret = -EINVAL;
15969         u32 num_conf = 0;
15970
15971         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15972                 return -EINVAL;
15973
15974         if (!rdev->ops->set_tid_config)
15975                 return -EOPNOTSUPP;
15976
15977         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15978                             rem_conf)
15979                 num_conf++;
15980
15981         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15982                              GFP_KERNEL);
15983         if (!tid_config)
15984                 return -ENOMEM;
15985
15986         tid_config->n_tid_conf = num_conf;
15987
15988         if (info->attrs[NL80211_ATTR_MAC])
15989                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15990
15991         wdev_lock(dev->ieee80211_ptr);
15992
15993         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15994                             rem_conf) {
15995                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15996                                        tid, NULL, NULL);
15997
15998                 if (ret)
15999                         goto bad_tid_conf;
16000
16001                 ret = parse_tid_conf(rdev, attrs, dev,
16002                                      &tid_config->tid_conf[conf_idx],
16003                                      info, tid_config->peer, link_id);
16004                 if (ret)
16005                         goto bad_tid_conf;
16006
16007                 conf_idx++;
16008         }
16009
16010         ret = rdev_set_tid_config(rdev, dev, tid_config);
16011
16012 bad_tid_conf:
16013         kfree(tid_config);
16014         wdev_unlock(dev->ieee80211_ptr);
16015         return ret;
16016 }
16017
16018 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
16019 {
16020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16021         struct cfg80211_color_change_settings params = {};
16022         struct net_device *dev = info->user_ptr[1];
16023         struct wireless_dev *wdev = dev->ieee80211_ptr;
16024         struct nlattr **tb;
16025         u16 offset;
16026         int err;
16027
16028         if (!rdev->ops->color_change)
16029                 return -EOPNOTSUPP;
16030
16031         if (!wiphy_ext_feature_isset(&rdev->wiphy,
16032                                      NL80211_EXT_FEATURE_BSS_COLOR))
16033                 return -EOPNOTSUPP;
16034
16035         if (wdev->iftype != NL80211_IFTYPE_AP)
16036                 return -EOPNOTSUPP;
16037
16038         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
16039             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
16040             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
16041                 return -EINVAL;
16042
16043         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16044         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16045
16046         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
16047                                    info->extack);
16048         if (err)
16049                 return err;
16050
16051         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16052         if (!tb)
16053                 return -ENOMEM;
16054
16055         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16056                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16057                                nl80211_policy, info->extack);
16058         if (err)
16059                 goto out;
16060
16061         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
16062                                    info->extack);
16063         if (err)
16064                 goto out;
16065
16066         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16067                 err = -EINVAL;
16068                 goto out;
16069         }
16070
16071         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16072                 err = -EINVAL;
16073                 goto out;
16074         }
16075
16076         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16077         if (offset >= params.beacon_color_change.tail_len) {
16078                 err = -EINVAL;
16079                 goto out;
16080         }
16081
16082         if (params.beacon_color_change.tail[offset] != params.count) {
16083                 err = -EINVAL;
16084                 goto out;
16085         }
16086
16087         params.counter_offset_beacon = offset;
16088
16089         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16090                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16091                     sizeof(u16)) {
16092                         err = -EINVAL;
16093                         goto out;
16094                 }
16095
16096                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16097                 if (offset >= params.beacon_color_change.probe_resp_len) {
16098                         err = -EINVAL;
16099                         goto out;
16100                 }
16101
16102                 if (params.beacon_color_change.probe_resp[offset] !=
16103                     params.count) {
16104                         err = -EINVAL;
16105                         goto out;
16106                 }
16107
16108                 params.counter_offset_presp = offset;
16109         }
16110
16111         wdev_lock(wdev);
16112         err = rdev_color_change(rdev, dev, &params);
16113         wdev_unlock(wdev);
16114
16115 out:
16116         kfree(params.beacon_next.mbssid_ies);
16117         kfree(params.beacon_color_change.mbssid_ies);
16118         kfree(params.beacon_next.rnr_ies);
16119         kfree(params.beacon_color_change.rnr_ies);
16120         kfree(tb);
16121         return err;
16122 }
16123
16124 static int nl80211_set_fils_aad(struct sk_buff *skb,
16125                                 struct genl_info *info)
16126 {
16127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16128         struct net_device *dev = info->user_ptr[1];
16129         struct cfg80211_fils_aad fils_aad = {};
16130         u8 *nonces;
16131
16132         if (!info->attrs[NL80211_ATTR_MAC] ||
16133             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16134             !info->attrs[NL80211_ATTR_FILS_NONCES])
16135                 return -EINVAL;
16136
16137         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16138         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16139         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16140         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16141         fils_aad.snonce = nonces;
16142         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16143
16144         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16145 }
16146
16147 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16148 {
16149         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16150         unsigned int link_id = nl80211_link_id(info->attrs);
16151         struct net_device *dev = info->user_ptr[1];
16152         struct wireless_dev *wdev = dev->ieee80211_ptr;
16153         int ret;
16154
16155         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16156                 return -EINVAL;
16157
16158         switch (wdev->iftype) {
16159         case NL80211_IFTYPE_AP:
16160                 break;
16161         default:
16162                 return -EINVAL;
16163         }
16164
16165         if (!info->attrs[NL80211_ATTR_MAC] ||
16166             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16167                 return -EINVAL;
16168
16169         wdev_lock(wdev);
16170         wdev->valid_links |= BIT(link_id);
16171         ether_addr_copy(wdev->links[link_id].addr,
16172                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16173
16174         ret = rdev_add_intf_link(rdev, wdev, link_id);
16175         if (ret) {
16176                 wdev->valid_links &= ~BIT(link_id);
16177                 eth_zero_addr(wdev->links[link_id].addr);
16178         }
16179         wdev_unlock(wdev);
16180
16181         return ret;
16182 }
16183
16184 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16185 {
16186         unsigned int link_id = nl80211_link_id(info->attrs);
16187         struct net_device *dev = info->user_ptr[1];
16188         struct wireless_dev *wdev = dev->ieee80211_ptr;
16189
16190         /* cannot remove if there's no link */
16191         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16192                 return -EINVAL;
16193
16194         switch (wdev->iftype) {
16195         case NL80211_IFTYPE_AP:
16196                 break;
16197         default:
16198                 return -EINVAL;
16199         }
16200
16201         wdev_lock(wdev);
16202         cfg80211_remove_link(wdev, link_id);
16203         wdev_unlock(wdev);
16204
16205         return 0;
16206 }
16207
16208 static int
16209 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16210                              bool add)
16211 {
16212         struct link_station_parameters params = {};
16213         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16214         struct net_device *dev = info->user_ptr[1];
16215         int err;
16216
16217         if ((add && !rdev->ops->add_link_station) ||
16218             (!add && !rdev->ops->mod_link_station))
16219                 return -EOPNOTSUPP;
16220
16221         if (add && !info->attrs[NL80211_ATTR_MAC])
16222                 return -EINVAL;
16223
16224         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16225                 return -EINVAL;
16226
16227         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16228                 return -EINVAL;
16229
16230         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16231
16232         if (info->attrs[NL80211_ATTR_MAC]) {
16233                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16234                 if (!is_valid_ether_addr(params.link_mac))
16235                         return -EINVAL;
16236         }
16237
16238         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16239                 return -EINVAL;
16240
16241         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16242
16243         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16244                 params.supported_rates =
16245                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16246                 params.supported_rates_len =
16247                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16248         }
16249
16250         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16251                 params.ht_capa =
16252                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16253
16254         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16255                 params.vht_capa =
16256                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16257
16258         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16259                 params.he_capa =
16260                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16261                 params.he_capa_len =
16262                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16263
16264                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16265                         params.eht_capa =
16266                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16267                         params.eht_capa_len =
16268                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16269
16270                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16271                                                         (const u8 *)params.eht_capa,
16272                                                         params.eht_capa_len,
16273                                                         false))
16274                                 return -EINVAL;
16275                 }
16276         }
16277
16278         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16279                 params.he_6ghz_capa =
16280                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16281
16282         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16283                 params.opmode_notif_used = true;
16284                 params.opmode_notif =
16285                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16286         }
16287
16288         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16289                                                 &params.txpwr_set);
16290         if (err)
16291                 return err;
16292
16293         wdev_lock(dev->ieee80211_ptr);
16294         if (add)
16295                 err = rdev_add_link_station(rdev, dev, &params);
16296         else
16297                 err = rdev_mod_link_station(rdev, dev, &params);
16298         wdev_unlock(dev->ieee80211_ptr);
16299
16300         return err;
16301 }
16302
16303 static int
16304 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16305 {
16306         return nl80211_add_mod_link_station(skb, info, true);
16307 }
16308
16309 static int
16310 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16311 {
16312         return nl80211_add_mod_link_station(skb, info, false);
16313 }
16314
16315 static int
16316 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16317 {
16318         struct link_station_del_parameters params = {};
16319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16320         struct net_device *dev = info->user_ptr[1];
16321         int ret;
16322
16323         if (!rdev->ops->del_link_station)
16324                 return -EOPNOTSUPP;
16325
16326         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16327             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16328                 return -EINVAL;
16329
16330         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16331         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16332
16333         wdev_lock(dev->ieee80211_ptr);
16334         ret = rdev_del_link_station(rdev, dev, &params);
16335         wdev_unlock(dev->ieee80211_ptr);
16336
16337         return ret;
16338 }
16339
16340 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16341                                     struct genl_info *info)
16342 {
16343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16344         struct net_device *dev = info->user_ptr[1];
16345         struct cfg80211_set_hw_timestamp hwts = {};
16346
16347         if (!rdev->wiphy.hw_timestamp_max_peers)
16348                 return -EOPNOTSUPP;
16349
16350         if (!info->attrs[NL80211_ATTR_MAC] &&
16351             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16352                 return -EOPNOTSUPP;
16353
16354         if (info->attrs[NL80211_ATTR_MAC])
16355                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16356
16357         hwts.enable =
16358                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16359
16360         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16361 }
16362
16363 #define NL80211_FLAG_NEED_WIPHY         0x01
16364 #define NL80211_FLAG_NEED_NETDEV        0x02
16365 #define NL80211_FLAG_NEED_RTNL          0x04
16366 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16367 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16368                                          NL80211_FLAG_CHECK_NETDEV_UP)
16369 #define NL80211_FLAG_NEED_WDEV          0x10
16370 /* If a netdev is associated, it must be UP, P2P must be started */
16371 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16372                                          NL80211_FLAG_CHECK_NETDEV_UP)
16373 #define NL80211_FLAG_CLEAR_SKB          0x20
16374 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16375 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16376 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16377
16378 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16379         SELECTOR(__sel, NONE, 0) /* must be first */    \
16380         SELECTOR(__sel, WIPHY,                          \
16381                  NL80211_FLAG_NEED_WIPHY)               \
16382         SELECTOR(__sel, WDEV,                           \
16383                  NL80211_FLAG_NEED_WDEV)                \
16384         SELECTOR(__sel, NETDEV,                         \
16385                  NL80211_FLAG_NEED_NETDEV)              \
16386         SELECTOR(__sel, NETDEV_LINK,                    \
16387                  NL80211_FLAG_NEED_NETDEV |             \
16388                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16389         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16390                  NL80211_FLAG_NEED_NETDEV |             \
16391                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16392         SELECTOR(__sel, WIPHY_RTNL,                     \
16393                  NL80211_FLAG_NEED_WIPHY |              \
16394                  NL80211_FLAG_NEED_RTNL)                \
16395         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16396                  NL80211_FLAG_NEED_WIPHY |              \
16397                  NL80211_FLAG_NEED_RTNL |               \
16398                  NL80211_FLAG_NO_WIPHY_MTX)             \
16399         SELECTOR(__sel, WDEV_RTNL,                      \
16400                  NL80211_FLAG_NEED_WDEV |               \
16401                  NL80211_FLAG_NEED_RTNL)                \
16402         SELECTOR(__sel, NETDEV_RTNL,                    \
16403                  NL80211_FLAG_NEED_NETDEV |             \
16404                  NL80211_FLAG_NEED_RTNL)                \
16405         SELECTOR(__sel, NETDEV_UP,                      \
16406                  NL80211_FLAG_NEED_NETDEV_UP)           \
16407         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16408                  NL80211_FLAG_NEED_NETDEV_UP |          \
16409                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16410         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16411                  NL80211_FLAG_NEED_NETDEV_UP |          \
16412                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16413         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16414                  NL80211_FLAG_NEED_NETDEV_UP |          \
16415                  NL80211_FLAG_CLEAR_SKB |               \
16416                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16417         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16418                  NL80211_FLAG_NEED_NETDEV_UP |          \
16419                  NL80211_FLAG_NO_WIPHY_MTX)             \
16420         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16421                  NL80211_FLAG_NEED_NETDEV_UP |          \
16422                  NL80211_FLAG_NO_WIPHY_MTX |            \
16423                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16424         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16425                  NL80211_FLAG_NEED_NETDEV_UP |          \
16426                  NL80211_FLAG_CLEAR_SKB)                \
16427         SELECTOR(__sel, WDEV_UP,                        \
16428                  NL80211_FLAG_NEED_WDEV_UP)             \
16429         SELECTOR(__sel, WDEV_UP_LINK,                   \
16430                  NL80211_FLAG_NEED_WDEV_UP |            \
16431                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16432         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16433                  NL80211_FLAG_NEED_WDEV_UP |            \
16434                  NL80211_FLAG_NEED_RTNL)                \
16435         SELECTOR(__sel, WIPHY_CLEAR,                    \
16436                  NL80211_FLAG_NEED_WIPHY |              \
16437                  NL80211_FLAG_CLEAR_SKB)
16438
16439 enum nl80211_internal_flags_selector {
16440 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16441         INTERNAL_FLAG_SELECTORS(_)
16442 #undef SELECTOR
16443 };
16444
16445 static u32 nl80211_internal_flags[] = {
16446 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16447         INTERNAL_FLAG_SELECTORS(_)
16448 #undef SELECTOR
16449 };
16450
16451 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16452                             struct sk_buff *skb,
16453                             struct genl_info *info)
16454 {
16455         struct cfg80211_registered_device *rdev = NULL;
16456         struct wireless_dev *wdev = NULL;
16457         struct net_device *dev = NULL;
16458         u32 internal_flags;
16459         int err;
16460
16461         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16462                 return -EINVAL;
16463
16464         internal_flags = nl80211_internal_flags[ops->internal_flags];
16465
16466         rtnl_lock();
16467         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16468                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16469                 if (IS_ERR(rdev)) {
16470                         err = PTR_ERR(rdev);
16471                         goto out_unlock;
16472                 }
16473                 info->user_ptr[0] = rdev;
16474         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16475                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16476                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16477                                                   info->attrs);
16478                 if (IS_ERR(wdev)) {
16479                         err = PTR_ERR(wdev);
16480                         goto out_unlock;
16481                 }
16482
16483                 dev = wdev->netdev;
16484                 dev_hold(dev);
16485                 rdev = wiphy_to_rdev(wdev->wiphy);
16486
16487                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16488                         if (!dev) {
16489                                 err = -EINVAL;
16490                                 goto out_unlock;
16491                         }
16492
16493                         info->user_ptr[1] = dev;
16494                 } else {
16495                         info->user_ptr[1] = wdev;
16496                 }
16497
16498                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16499                     !wdev_running(wdev)) {
16500                         err = -ENETDOWN;
16501                         goto out_unlock;
16502                 }
16503
16504                 info->user_ptr[0] = rdev;
16505         }
16506
16507         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16508                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16509
16510                 if (!wdev) {
16511                         err = -EINVAL;
16512                         goto out_unlock;
16513                 }
16514
16515                 /* MLO -> require valid link ID */
16516                 if (wdev->valid_links &&
16517                     (!link_id ||
16518                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16519                         err = -EINVAL;
16520                         goto out_unlock;
16521                 }
16522
16523                 /* non-MLO -> no link ID attribute accepted */
16524                 if (!wdev->valid_links && link_id) {
16525                         err = -EINVAL;
16526                         goto out_unlock;
16527                 }
16528         }
16529
16530         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16531                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16532                     (wdev && wdev->valid_links)) {
16533                         err = -EINVAL;
16534                         goto out_unlock;
16535                 }
16536         }
16537
16538         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16539                 wiphy_lock(&rdev->wiphy);
16540                 /* we keep the mutex locked until post_doit */
16541                 __release(&rdev->wiphy.mtx);
16542         }
16543         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16544                 rtnl_unlock();
16545
16546         return 0;
16547 out_unlock:
16548         rtnl_unlock();
16549         dev_put(dev);
16550         return err;
16551 }
16552
16553 static void nl80211_post_doit(const struct genl_split_ops *ops,
16554                               struct sk_buff *skb,
16555                               struct genl_info *info)
16556 {
16557         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16558
16559         if (info->user_ptr[1]) {
16560                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16561                         struct wireless_dev *wdev = info->user_ptr[1];
16562
16563                         dev_put(wdev->netdev);
16564                 } else {
16565                         dev_put(info->user_ptr[1]);
16566                 }
16567         }
16568
16569         if (info->user_ptr[0] &&
16570             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16571                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16572
16573                 /* we kept the mutex locked since pre_doit */
16574                 __acquire(&rdev->wiphy.mtx);
16575                 wiphy_unlock(&rdev->wiphy);
16576         }
16577
16578         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16579                 rtnl_unlock();
16580
16581         /* If needed, clear the netlink message payload from the SKB
16582          * as it might contain key data that shouldn't stick around on
16583          * the heap after the SKB is freed. The netlink message header
16584          * is still needed for further processing, so leave it intact.
16585          */
16586         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16587                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16588
16589                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16590         }
16591 }
16592
16593 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16594                                      struct cfg80211_sar_specs *sar_specs,
16595                                      struct nlattr *spec[], int index)
16596 {
16597         u32 range_index, i;
16598
16599         if (!sar_specs || !spec)
16600                 return -EINVAL;
16601
16602         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16603             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16604                 return -EINVAL;
16605
16606         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16607
16608         /* check if range_index exceeds num_freq_ranges */
16609         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16610                 return -EINVAL;
16611
16612         /* check if range_index duplicates */
16613         for (i = 0; i < index; i++) {
16614                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16615                         return -EINVAL;
16616         }
16617
16618         sar_specs->sub_specs[index].power =
16619                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16620
16621         sar_specs->sub_specs[index].freq_range_index = range_index;
16622
16623         return 0;
16624 }
16625
16626 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16627 {
16628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16629         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16630         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16631         struct cfg80211_sar_specs *sar_spec;
16632         enum nl80211_sar_type type;
16633         struct nlattr *spec_list;
16634         u32 specs;
16635         int rem, err;
16636
16637         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16638                 return -EOPNOTSUPP;
16639
16640         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16641                 return -EINVAL;
16642
16643         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16644                          info->attrs[NL80211_ATTR_SAR_SPEC],
16645                          NULL, NULL);
16646
16647         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16648                 return -EINVAL;
16649
16650         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16651         if (type != rdev->wiphy.sar_capa->type)
16652                 return -EINVAL;
16653
16654         specs = 0;
16655         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16656                 specs++;
16657
16658         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16659                 return -EINVAL;
16660
16661         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16662         if (!sar_spec)
16663                 return -ENOMEM;
16664
16665         sar_spec->type = type;
16666         specs = 0;
16667         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16668                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16669                                  spec_list, NULL, NULL);
16670
16671                 switch (type) {
16672                 case NL80211_SAR_TYPE_POWER:
16673                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16674                                                       spec, specs)) {
16675                                 err = -EINVAL;
16676                                 goto error;
16677                         }
16678                         break;
16679                 default:
16680                         err = -EINVAL;
16681                         goto error;
16682                 }
16683                 specs++;
16684         }
16685
16686         sar_spec->num_sub_specs = specs;
16687
16688         rdev->cur_cmd_info = info;
16689         err = rdev_set_sar_specs(rdev, sar_spec);
16690         rdev->cur_cmd_info = NULL;
16691 error:
16692         kfree(sar_spec);
16693         return err;
16694 }
16695
16696 #define SELECTOR(__sel, name, value) \
16697         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16698 int __missing_selector(void);
16699 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16700
16701 static const struct genl_ops nl80211_ops[] = {
16702         {
16703                 .cmd = NL80211_CMD_GET_WIPHY,
16704                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16705                 .doit = nl80211_get_wiphy,
16706                 .dumpit = nl80211_dump_wiphy,
16707                 .done = nl80211_dump_wiphy_done,
16708                 /* can be retrieved by unprivileged users */
16709                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16710         },
16711 };
16712
16713 static const struct genl_small_ops nl80211_small_ops[] = {
16714         {
16715                 .cmd = NL80211_CMD_SET_WIPHY,
16716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16717                 .doit = nl80211_set_wiphy,
16718                 .flags = GENL_UNS_ADMIN_PERM,
16719         },
16720         {
16721                 .cmd = NL80211_CMD_GET_INTERFACE,
16722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16723                 .doit = nl80211_get_interface,
16724                 .dumpit = nl80211_dump_interface,
16725                 /* can be retrieved by unprivileged users */
16726                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16727         },
16728         {
16729                 .cmd = NL80211_CMD_SET_INTERFACE,
16730                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16731                 .doit = nl80211_set_interface,
16732                 .flags = GENL_UNS_ADMIN_PERM,
16733                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16734                                          NL80211_FLAG_NEED_RTNL),
16735         },
16736         {
16737                 .cmd = NL80211_CMD_NEW_INTERFACE,
16738                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16739                 .doit = nl80211_new_interface,
16740                 .flags = GENL_UNS_ADMIN_PERM,
16741                 .internal_flags =
16742                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16743                                NL80211_FLAG_NEED_RTNL |
16744                                /* we take the wiphy mutex later ourselves */
16745                                NL80211_FLAG_NO_WIPHY_MTX),
16746         },
16747         {
16748                 .cmd = NL80211_CMD_DEL_INTERFACE,
16749                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16750                 .doit = nl80211_del_interface,
16751                 .flags = GENL_UNS_ADMIN_PERM,
16752                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16753                                          NL80211_FLAG_NEED_RTNL),
16754         },
16755         {
16756                 .cmd = NL80211_CMD_GET_KEY,
16757                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16758                 .doit = nl80211_get_key,
16759                 .flags = GENL_UNS_ADMIN_PERM,
16760                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16761         },
16762         {
16763                 .cmd = NL80211_CMD_SET_KEY,
16764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16765                 .doit = nl80211_set_key,
16766                 .flags = GENL_UNS_ADMIN_PERM,
16767                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16768                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16769                                          NL80211_FLAG_CLEAR_SKB),
16770         },
16771         {
16772                 .cmd = NL80211_CMD_NEW_KEY,
16773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16774                 .doit = nl80211_new_key,
16775                 .flags = GENL_UNS_ADMIN_PERM,
16776                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16777                                          NL80211_FLAG_CLEAR_SKB),
16778         },
16779         {
16780                 .cmd = NL80211_CMD_DEL_KEY,
16781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16782                 .doit = nl80211_del_key,
16783                 .flags = GENL_UNS_ADMIN_PERM,
16784                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16785         },
16786         {
16787                 .cmd = NL80211_CMD_SET_BEACON,
16788                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16789                 .flags = GENL_UNS_ADMIN_PERM,
16790                 .doit = nl80211_set_beacon,
16791                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16792                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16793         },
16794         {
16795                 .cmd = NL80211_CMD_START_AP,
16796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16797                 .flags = GENL_UNS_ADMIN_PERM,
16798                 .doit = nl80211_start_ap,
16799                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16800                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16801         },
16802         {
16803                 .cmd = NL80211_CMD_STOP_AP,
16804                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16805                 .flags = GENL_UNS_ADMIN_PERM,
16806                 .doit = nl80211_stop_ap,
16807                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16808                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16809         },
16810         {
16811                 .cmd = NL80211_CMD_GET_STATION,
16812                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16813                 .doit = nl80211_get_station,
16814                 .dumpit = nl80211_dump_station,
16815                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16816         },
16817         {
16818                 .cmd = NL80211_CMD_SET_STATION,
16819                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16820                 .doit = nl80211_set_station,
16821                 .flags = GENL_UNS_ADMIN_PERM,
16822                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16823         },
16824         {
16825                 .cmd = NL80211_CMD_NEW_STATION,
16826                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16827                 .doit = nl80211_new_station,
16828                 .flags = GENL_UNS_ADMIN_PERM,
16829                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16830         },
16831         {
16832                 .cmd = NL80211_CMD_DEL_STATION,
16833                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16834                 .doit = nl80211_del_station,
16835                 .flags = GENL_UNS_ADMIN_PERM,
16836                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16837         },
16838         {
16839                 .cmd = NL80211_CMD_GET_MPATH,
16840                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16841                 .doit = nl80211_get_mpath,
16842                 .dumpit = nl80211_dump_mpath,
16843                 .flags = GENL_UNS_ADMIN_PERM,
16844                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16845         },
16846         {
16847                 .cmd = NL80211_CMD_GET_MPP,
16848                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16849                 .doit = nl80211_get_mpp,
16850                 .dumpit = nl80211_dump_mpp,
16851                 .flags = GENL_UNS_ADMIN_PERM,
16852                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16853         },
16854         {
16855                 .cmd = NL80211_CMD_SET_MPATH,
16856                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16857                 .doit = nl80211_set_mpath,
16858                 .flags = GENL_UNS_ADMIN_PERM,
16859                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16860         },
16861         {
16862                 .cmd = NL80211_CMD_NEW_MPATH,
16863                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864                 .doit = nl80211_new_mpath,
16865                 .flags = GENL_UNS_ADMIN_PERM,
16866                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16867         },
16868         {
16869                 .cmd = NL80211_CMD_DEL_MPATH,
16870                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871                 .doit = nl80211_del_mpath,
16872                 .flags = GENL_UNS_ADMIN_PERM,
16873                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16874         },
16875         {
16876                 .cmd = NL80211_CMD_SET_BSS,
16877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16878                 .doit = nl80211_set_bss,
16879                 .flags = GENL_UNS_ADMIN_PERM,
16880                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16881                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16882         },
16883         {
16884                 .cmd = NL80211_CMD_GET_REG,
16885                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16886                 .doit = nl80211_get_reg_do,
16887                 .dumpit = nl80211_get_reg_dump,
16888                 /* can be retrieved by unprivileged users */
16889         },
16890 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16891         {
16892                 .cmd = NL80211_CMD_SET_REG,
16893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16894                 .doit = nl80211_set_reg,
16895                 .flags = GENL_ADMIN_PERM,
16896         },
16897 #endif
16898         {
16899                 .cmd = NL80211_CMD_REQ_SET_REG,
16900                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901                 .doit = nl80211_req_set_reg,
16902                 .flags = GENL_ADMIN_PERM,
16903         },
16904         {
16905                 .cmd = NL80211_CMD_RELOAD_REGDB,
16906                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16907                 .doit = nl80211_reload_regdb,
16908                 .flags = GENL_ADMIN_PERM,
16909         },
16910         {
16911                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16912                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16913                 .doit = nl80211_get_mesh_config,
16914                 /* can be retrieved by unprivileged users */
16915                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16916         },
16917         {
16918                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16920                 .doit = nl80211_update_mesh_config,
16921                 .flags = GENL_UNS_ADMIN_PERM,
16922                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16923         },
16924         {
16925                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16926                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16927                 .doit = nl80211_trigger_scan,
16928                 .flags = GENL_UNS_ADMIN_PERM,
16929                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16930         },
16931         {
16932                 .cmd = NL80211_CMD_ABORT_SCAN,
16933                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16934                 .doit = nl80211_abort_scan,
16935                 .flags = GENL_UNS_ADMIN_PERM,
16936                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16937         },
16938         {
16939                 .cmd = NL80211_CMD_GET_SCAN,
16940                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16941                 .dumpit = nl80211_dump_scan,
16942         },
16943         {
16944                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16945                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16946                 .doit = nl80211_start_sched_scan,
16947                 .flags = GENL_UNS_ADMIN_PERM,
16948                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16949         },
16950         {
16951                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16952                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16953                 .doit = nl80211_stop_sched_scan,
16954                 .flags = GENL_UNS_ADMIN_PERM,
16955                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16956         },
16957         {
16958                 .cmd = NL80211_CMD_AUTHENTICATE,
16959                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16960                 .doit = nl80211_authenticate,
16961                 .flags = GENL_UNS_ADMIN_PERM,
16962                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16963                                          NL80211_FLAG_CLEAR_SKB),
16964         },
16965         {
16966                 .cmd = NL80211_CMD_ASSOCIATE,
16967                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16968                 .doit = nl80211_associate,
16969                 .flags = GENL_UNS_ADMIN_PERM,
16970                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16971                                          NL80211_FLAG_CLEAR_SKB),
16972         },
16973         {
16974                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16976                 .doit = nl80211_deauthenticate,
16977                 .flags = GENL_UNS_ADMIN_PERM,
16978                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16979         },
16980         {
16981                 .cmd = NL80211_CMD_DISASSOCIATE,
16982                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16983                 .doit = nl80211_disassociate,
16984                 .flags = GENL_UNS_ADMIN_PERM,
16985                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16986         },
16987         {
16988                 .cmd = NL80211_CMD_JOIN_IBSS,
16989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16990                 .doit = nl80211_join_ibss,
16991                 .flags = GENL_UNS_ADMIN_PERM,
16992                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16993         },
16994         {
16995                 .cmd = NL80211_CMD_LEAVE_IBSS,
16996                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16997                 .doit = nl80211_leave_ibss,
16998                 .flags = GENL_UNS_ADMIN_PERM,
16999                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17000         },
17001 #ifdef CONFIG_NL80211_TESTMODE
17002         {
17003                 .cmd = NL80211_CMD_TESTMODE,
17004                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17005                 .doit = nl80211_testmode_do,
17006                 .dumpit = nl80211_testmode_dump,
17007                 .flags = GENL_UNS_ADMIN_PERM,
17008                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17009         },
17010 #endif
17011         {
17012                 .cmd = NL80211_CMD_CONNECT,
17013                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17014                 .doit = nl80211_connect,
17015                 .flags = GENL_UNS_ADMIN_PERM,
17016                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17017                                          NL80211_FLAG_CLEAR_SKB),
17018         },
17019         {
17020                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
17021                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17022                 .doit = nl80211_update_connect_params,
17023                 .flags = GENL_ADMIN_PERM,
17024                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17025                                          NL80211_FLAG_CLEAR_SKB),
17026         },
17027         {
17028                 .cmd = NL80211_CMD_DISCONNECT,
17029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17030                 .doit = nl80211_disconnect,
17031                 .flags = GENL_UNS_ADMIN_PERM,
17032                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17033         },
17034         {
17035                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
17036                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17037                 .doit = nl80211_wiphy_netns,
17038                 .flags = GENL_UNS_ADMIN_PERM,
17039                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17040                                          NL80211_FLAG_NEED_RTNL |
17041                                          NL80211_FLAG_NO_WIPHY_MTX),
17042         },
17043         {
17044                 .cmd = NL80211_CMD_GET_SURVEY,
17045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17046                 .dumpit = nl80211_dump_survey,
17047         },
17048         {
17049                 .cmd = NL80211_CMD_SET_PMKSA,
17050                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17051                 .doit = nl80211_setdel_pmksa,
17052                 .flags = GENL_UNS_ADMIN_PERM,
17053                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17054                                          NL80211_FLAG_CLEAR_SKB),
17055         },
17056         {
17057                 .cmd = NL80211_CMD_DEL_PMKSA,
17058                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17059                 .doit = nl80211_setdel_pmksa,
17060                 .flags = GENL_UNS_ADMIN_PERM,
17061                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17062         },
17063         {
17064                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17065                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17066                 .doit = nl80211_flush_pmksa,
17067                 .flags = GENL_UNS_ADMIN_PERM,
17068                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17069         },
17070         {
17071                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17073                 .doit = nl80211_remain_on_channel,
17074                 .flags = GENL_UNS_ADMIN_PERM,
17075                 /* FIXME: requiring a link ID here is probably not good */
17076                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17077                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17078         },
17079         {
17080                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17082                 .doit = nl80211_cancel_remain_on_channel,
17083                 .flags = GENL_UNS_ADMIN_PERM,
17084                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17085         },
17086         {
17087                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17089                 .doit = nl80211_set_tx_bitrate_mask,
17090                 .flags = GENL_UNS_ADMIN_PERM,
17091                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17092                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17093         },
17094         {
17095                 .cmd = NL80211_CMD_REGISTER_FRAME,
17096                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17097                 .doit = nl80211_register_mgmt,
17098                 .flags = GENL_UNS_ADMIN_PERM,
17099                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17100         },
17101         {
17102                 .cmd = NL80211_CMD_FRAME,
17103                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17104                 .doit = nl80211_tx_mgmt,
17105                 .flags = GENL_UNS_ADMIN_PERM,
17106                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17107         },
17108         {
17109                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17110                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17111                 .doit = nl80211_tx_mgmt_cancel_wait,
17112                 .flags = GENL_UNS_ADMIN_PERM,
17113                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17114         },
17115         {
17116                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17118                 .doit = nl80211_set_power_save,
17119                 .flags = GENL_UNS_ADMIN_PERM,
17120                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17121         },
17122         {
17123                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17124                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17125                 .doit = nl80211_get_power_save,
17126                 /* can be retrieved by unprivileged users */
17127                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17128         },
17129         {
17130                 .cmd = NL80211_CMD_SET_CQM,
17131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17132                 .doit = nl80211_set_cqm,
17133                 .flags = GENL_UNS_ADMIN_PERM,
17134                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17135         },
17136         {
17137                 .cmd = NL80211_CMD_SET_CHANNEL,
17138                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17139                 .doit = nl80211_set_channel,
17140                 .flags = GENL_UNS_ADMIN_PERM,
17141                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17142                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17143         },
17144         {
17145                 .cmd = NL80211_CMD_JOIN_MESH,
17146                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17147                 .doit = nl80211_join_mesh,
17148                 .flags = GENL_UNS_ADMIN_PERM,
17149                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17150         },
17151         {
17152                 .cmd = NL80211_CMD_LEAVE_MESH,
17153                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17154                 .doit = nl80211_leave_mesh,
17155                 .flags = GENL_UNS_ADMIN_PERM,
17156                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17157         },
17158         {
17159                 .cmd = NL80211_CMD_JOIN_OCB,
17160                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17161                 .doit = nl80211_join_ocb,
17162                 .flags = GENL_UNS_ADMIN_PERM,
17163                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17164         },
17165         {
17166                 .cmd = NL80211_CMD_LEAVE_OCB,
17167                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17168                 .doit = nl80211_leave_ocb,
17169                 .flags = GENL_UNS_ADMIN_PERM,
17170                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17171         },
17172 #ifdef CONFIG_PM
17173         {
17174                 .cmd = NL80211_CMD_GET_WOWLAN,
17175                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17176                 .doit = nl80211_get_wowlan,
17177                 /* can be retrieved by unprivileged users */
17178                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17179         },
17180         {
17181                 .cmd = NL80211_CMD_SET_WOWLAN,
17182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17183                 .doit = nl80211_set_wowlan,
17184                 .flags = GENL_UNS_ADMIN_PERM,
17185                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17186         },
17187 #endif
17188         {
17189                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17190                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17191                 .doit = nl80211_set_rekey_data,
17192                 .flags = GENL_UNS_ADMIN_PERM,
17193                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17194                                          NL80211_FLAG_CLEAR_SKB),
17195         },
17196         {
17197                 .cmd = NL80211_CMD_TDLS_MGMT,
17198                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17199                 .doit = nl80211_tdls_mgmt,
17200                 .flags = GENL_UNS_ADMIN_PERM,
17201                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17202                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17203         },
17204         {
17205                 .cmd = NL80211_CMD_TDLS_OPER,
17206                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17207                 .doit = nl80211_tdls_oper,
17208                 .flags = GENL_UNS_ADMIN_PERM,
17209                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17210         },
17211         {
17212                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17213                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17214                 .doit = nl80211_register_unexpected_frame,
17215                 .flags = GENL_UNS_ADMIN_PERM,
17216                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17217         },
17218         {
17219                 .cmd = NL80211_CMD_PROBE_CLIENT,
17220                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17221                 .doit = nl80211_probe_client,
17222                 .flags = GENL_UNS_ADMIN_PERM,
17223                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17224         },
17225         {
17226                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17227                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17228                 .doit = nl80211_register_beacons,
17229                 .flags = GENL_UNS_ADMIN_PERM,
17230                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17231         },
17232         {
17233                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17234                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17235                 .doit = nl80211_set_noack_map,
17236                 .flags = GENL_UNS_ADMIN_PERM,
17237                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17238         },
17239         {
17240                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17242                 .doit = nl80211_start_p2p_device,
17243                 .flags = GENL_UNS_ADMIN_PERM,
17244                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17245                                          NL80211_FLAG_NEED_RTNL),
17246         },
17247         {
17248                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17249                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17250                 .doit = nl80211_stop_p2p_device,
17251                 .flags = GENL_UNS_ADMIN_PERM,
17252                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17253                                          NL80211_FLAG_NEED_RTNL),
17254         },
17255         {
17256                 .cmd = NL80211_CMD_START_NAN,
17257                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17258                 .doit = nl80211_start_nan,
17259                 .flags = GENL_ADMIN_PERM,
17260                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17261                                          NL80211_FLAG_NEED_RTNL),
17262         },
17263         {
17264                 .cmd = NL80211_CMD_STOP_NAN,
17265                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17266                 .doit = nl80211_stop_nan,
17267                 .flags = GENL_ADMIN_PERM,
17268                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17269                                          NL80211_FLAG_NEED_RTNL),
17270         },
17271         {
17272                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17273                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17274                 .doit = nl80211_nan_add_func,
17275                 .flags = GENL_ADMIN_PERM,
17276                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17277         },
17278         {
17279                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17281                 .doit = nl80211_nan_del_func,
17282                 .flags = GENL_ADMIN_PERM,
17283                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17284         },
17285         {
17286                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17287                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17288                 .doit = nl80211_nan_change_config,
17289                 .flags = GENL_ADMIN_PERM,
17290                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17291         },
17292         {
17293                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17294                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17295                 .doit = nl80211_set_mcast_rate,
17296                 .flags = GENL_UNS_ADMIN_PERM,
17297                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17298         },
17299         {
17300                 .cmd = NL80211_CMD_SET_MAC_ACL,
17301                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17302                 .doit = nl80211_set_mac_acl,
17303                 .flags = GENL_UNS_ADMIN_PERM,
17304                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17305                                          NL80211_FLAG_MLO_UNSUPPORTED),
17306         },
17307         {
17308                 .cmd = NL80211_CMD_RADAR_DETECT,
17309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17310                 .doit = nl80211_start_radar_detection,
17311                 .flags = GENL_UNS_ADMIN_PERM,
17312                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17313                                          NL80211_FLAG_NO_WIPHY_MTX |
17314                                          NL80211_FLAG_MLO_UNSUPPORTED),
17315         },
17316         {
17317                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17319                 .doit = nl80211_get_protocol_features,
17320         },
17321         {
17322                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17323                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17324                 .doit = nl80211_update_ft_ies,
17325                 .flags = GENL_UNS_ADMIN_PERM,
17326                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17327         },
17328         {
17329                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17330                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17331                 .doit = nl80211_crit_protocol_start,
17332                 .flags = GENL_UNS_ADMIN_PERM,
17333                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17334         },
17335         {
17336                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17337                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17338                 .doit = nl80211_crit_protocol_stop,
17339                 .flags = GENL_UNS_ADMIN_PERM,
17340                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17341         },
17342         {
17343                 .cmd = NL80211_CMD_GET_COALESCE,
17344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17345                 .doit = nl80211_get_coalesce,
17346                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17347         },
17348         {
17349                 .cmd = NL80211_CMD_SET_COALESCE,
17350                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17351                 .doit = nl80211_set_coalesce,
17352                 .flags = GENL_UNS_ADMIN_PERM,
17353                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17354         },
17355         {
17356                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17357                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17358                 .doit = nl80211_channel_switch,
17359                 .flags = GENL_UNS_ADMIN_PERM,
17360                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17361                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17362         },
17363         {
17364                 .cmd = NL80211_CMD_VENDOR,
17365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17366                 .doit = nl80211_vendor_cmd,
17367                 .dumpit = nl80211_vendor_cmd_dump,
17368                 .flags = GENL_UNS_ADMIN_PERM,
17369                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17370                                          NL80211_FLAG_CLEAR_SKB),
17371         },
17372         {
17373                 .cmd = NL80211_CMD_SET_QOS_MAP,
17374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17375                 .doit = nl80211_set_qos_map,
17376                 .flags = GENL_UNS_ADMIN_PERM,
17377                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17378         },
17379         {
17380                 .cmd = NL80211_CMD_ADD_TX_TS,
17381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17382                 .doit = nl80211_add_tx_ts,
17383                 .flags = GENL_UNS_ADMIN_PERM,
17384                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17385                                          NL80211_FLAG_MLO_UNSUPPORTED),
17386         },
17387         {
17388                 .cmd = NL80211_CMD_DEL_TX_TS,
17389                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17390                 .doit = nl80211_del_tx_ts,
17391                 .flags = GENL_UNS_ADMIN_PERM,
17392                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17393         },
17394         {
17395                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17396                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17397                 .doit = nl80211_tdls_channel_switch,
17398                 .flags = GENL_UNS_ADMIN_PERM,
17399                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17400         },
17401         {
17402                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17403                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17404                 .doit = nl80211_tdls_cancel_channel_switch,
17405                 .flags = GENL_UNS_ADMIN_PERM,
17406                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17407         },
17408         {
17409                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17410                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17411                 .doit = nl80211_set_multicast_to_unicast,
17412                 .flags = GENL_UNS_ADMIN_PERM,
17413                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17414         },
17415         {
17416                 .cmd = NL80211_CMD_SET_PMK,
17417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17418                 .doit = nl80211_set_pmk,
17419                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17420                                          NL80211_FLAG_CLEAR_SKB),
17421         },
17422         {
17423                 .cmd = NL80211_CMD_DEL_PMK,
17424                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17425                 .doit = nl80211_del_pmk,
17426                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17427         },
17428         {
17429                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17430                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17431                 .doit = nl80211_external_auth,
17432                 .flags = GENL_ADMIN_PERM,
17433                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17434         },
17435         {
17436                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17437                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17438                 .doit = nl80211_tx_control_port,
17439                 .flags = GENL_UNS_ADMIN_PERM,
17440                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17441         },
17442         {
17443                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17445                 .doit = nl80211_get_ftm_responder_stats,
17446                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17447                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17448         },
17449         {
17450                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17452                 .doit = nl80211_pmsr_start,
17453                 .flags = GENL_UNS_ADMIN_PERM,
17454                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17455         },
17456         {
17457                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17458                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17459                 .doit = nl80211_notify_radar_detection,
17460                 .flags = GENL_UNS_ADMIN_PERM,
17461                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17462         },
17463         {
17464                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17465                 .doit = nl80211_update_owe_info,
17466                 .flags = GENL_ADMIN_PERM,
17467                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17468         },
17469         {
17470                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17471                 .doit = nl80211_probe_mesh_link,
17472                 .flags = GENL_UNS_ADMIN_PERM,
17473                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17474         },
17475         {
17476                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17477                 .doit = nl80211_set_tid_config,
17478                 .flags = GENL_UNS_ADMIN_PERM,
17479                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17480                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17481         },
17482         {
17483                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17485                 .doit = nl80211_set_sar_specs,
17486                 .flags = GENL_UNS_ADMIN_PERM,
17487                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17488                                          NL80211_FLAG_NEED_RTNL),
17489         },
17490         {
17491                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17493                 .doit = nl80211_color_change,
17494                 .flags = GENL_UNS_ADMIN_PERM,
17495                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17496         },
17497         {
17498                 .cmd = NL80211_CMD_SET_FILS_AAD,
17499                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17500                 .doit = nl80211_set_fils_aad,
17501                 .flags = GENL_UNS_ADMIN_PERM,
17502                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17503         },
17504         {
17505                 .cmd = NL80211_CMD_ADD_LINK,
17506                 .doit = nl80211_add_link,
17507                 .flags = GENL_UNS_ADMIN_PERM,
17508                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17509         },
17510         {
17511                 .cmd = NL80211_CMD_REMOVE_LINK,
17512                 .doit = nl80211_remove_link,
17513                 .flags = GENL_UNS_ADMIN_PERM,
17514                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17515                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17516         },
17517         {
17518                 .cmd = NL80211_CMD_ADD_LINK_STA,
17519                 .doit = nl80211_add_link_station,
17520                 .flags = GENL_UNS_ADMIN_PERM,
17521                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17522                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17523         },
17524         {
17525                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17526                 .doit = nl80211_modify_link_station,
17527                 .flags = GENL_UNS_ADMIN_PERM,
17528                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17529                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17530         },
17531         {
17532                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17533                 .doit = nl80211_remove_link_station,
17534                 .flags = GENL_UNS_ADMIN_PERM,
17535                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17536                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17537         },
17538         {
17539                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17540                 .doit = nl80211_set_hw_timestamp,
17541                 .flags = GENL_UNS_ADMIN_PERM,
17542                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17543         },
17544 };
17545
17546 static struct genl_family nl80211_fam __ro_after_init = {
17547         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17548         .hdrsize = 0,                   /* no private header */
17549         .version = 1,                   /* no particular meaning now */
17550         .maxattr = NL80211_ATTR_MAX,
17551         .policy = nl80211_policy,
17552         .netnsok = true,
17553         .pre_doit = nl80211_pre_doit,
17554         .post_doit = nl80211_post_doit,
17555         .module = THIS_MODULE,
17556         .ops = nl80211_ops,
17557         .n_ops = ARRAY_SIZE(nl80211_ops),
17558         .small_ops = nl80211_small_ops,
17559         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17560         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17561         .mcgrps = nl80211_mcgrps,
17562         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17563         .parallel_ops = true,
17564 };
17565
17566 /* notification functions */
17567
17568 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17569                           enum nl80211_commands cmd)
17570 {
17571         struct sk_buff *msg;
17572         struct nl80211_dump_wiphy_state state = {};
17573
17574         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17575                 cmd != NL80211_CMD_DEL_WIPHY);
17576
17577         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17578         if (!msg)
17579                 return;
17580
17581         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17582                 nlmsg_free(msg);
17583                 return;
17584         }
17585
17586         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17587                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17588 }
17589
17590 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17591                                 struct wireless_dev *wdev,
17592                                 enum nl80211_commands cmd)
17593 {
17594         struct sk_buff *msg;
17595
17596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17597         if (!msg)
17598                 return;
17599
17600         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17601                 nlmsg_free(msg);
17602                 return;
17603         }
17604
17605         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17606                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17607 }
17608
17609 static int nl80211_add_scan_req(struct sk_buff *msg,
17610                                 struct cfg80211_registered_device *rdev)
17611 {
17612         struct cfg80211_scan_request *req = rdev->scan_req;
17613         struct nlattr *nest;
17614         int i;
17615         struct cfg80211_scan_info *info;
17616
17617         if (WARN_ON(!req))
17618                 return 0;
17619
17620         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17621         if (!nest)
17622                 goto nla_put_failure;
17623         for (i = 0; i < req->n_ssids; i++) {
17624                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17625                         goto nla_put_failure;
17626         }
17627         nla_nest_end(msg, nest);
17628
17629         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17630                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17631                 if (!nest)
17632                         goto nla_put_failure;
17633                 for (i = 0; i < req->n_channels; i++) {
17634                         if (nla_put_u32(msg, i,
17635                                    ieee80211_channel_to_khz(req->channels[i])))
17636                                 goto nla_put_failure;
17637                 }
17638                 nla_nest_end(msg, nest);
17639         } else {
17640                 nest = nla_nest_start_noflag(msg,
17641                                              NL80211_ATTR_SCAN_FREQUENCIES);
17642                 if (!nest)
17643                         goto nla_put_failure;
17644                 for (i = 0; i < req->n_channels; i++) {
17645                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17646                                 goto nla_put_failure;
17647                 }
17648                 nla_nest_end(msg, nest);
17649         }
17650
17651         if (req->ie &&
17652             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17653                 goto nla_put_failure;
17654
17655         if (req->flags &&
17656             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17657                 goto nla_put_failure;
17658
17659         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17660                 &rdev->scan_req->info;
17661         if (info->scan_start_tsf &&
17662             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17663                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17664              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17665                      info->tsf_bssid)))
17666                 goto nla_put_failure;
17667
17668         return 0;
17669  nla_put_failure:
17670         return -ENOBUFS;
17671 }
17672
17673 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17674                                  struct cfg80211_registered_device *rdev,
17675                                  struct wireless_dev *wdev,
17676                                  u32 portid, u32 seq, int flags,
17677                                  u32 cmd)
17678 {
17679         void *hdr;
17680
17681         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17682         if (!hdr)
17683                 return -1;
17684
17685         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17686             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17687                                          wdev->netdev->ifindex)) ||
17688             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17689                               NL80211_ATTR_PAD))
17690                 goto nla_put_failure;
17691
17692         /* ignore errors and send incomplete event anyway */
17693         nl80211_add_scan_req(msg, rdev);
17694
17695         genlmsg_end(msg, hdr);
17696         return 0;
17697
17698  nla_put_failure:
17699         genlmsg_cancel(msg, hdr);
17700         return -EMSGSIZE;
17701 }
17702
17703 static int
17704 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17705                             struct cfg80211_sched_scan_request *req, u32 cmd)
17706 {
17707         void *hdr;
17708
17709         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17710         if (!hdr)
17711                 return -1;
17712
17713         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17714                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17715             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17716             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17717                               NL80211_ATTR_PAD))
17718                 goto nla_put_failure;
17719
17720         genlmsg_end(msg, hdr);
17721         return 0;
17722
17723  nla_put_failure:
17724         genlmsg_cancel(msg, hdr);
17725         return -EMSGSIZE;
17726 }
17727
17728 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17729                              struct wireless_dev *wdev)
17730 {
17731         struct sk_buff *msg;
17732
17733         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17734         if (!msg)
17735                 return;
17736
17737         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17738                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17739                 nlmsg_free(msg);
17740                 return;
17741         }
17742
17743         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17744                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17745 }
17746
17747 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17748                                        struct wireless_dev *wdev, bool aborted)
17749 {
17750         struct sk_buff *msg;
17751
17752         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17753         if (!msg)
17754                 return NULL;
17755
17756         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17757                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17758                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17759                 nlmsg_free(msg);
17760                 return NULL;
17761         }
17762
17763         return msg;
17764 }
17765
17766 /* send message created by nl80211_build_scan_msg() */
17767 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17768                            struct sk_buff *msg)
17769 {
17770         if (!msg)
17771                 return;
17772
17773         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17774                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17775 }
17776
17777 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17778 {
17779         struct sk_buff *msg;
17780
17781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17782         if (!msg)
17783                 return;
17784
17785         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17786                 nlmsg_free(msg);
17787                 return;
17788         }
17789
17790         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17791                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17792 }
17793
17794 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17795                                           struct regulatory_request *request)
17796 {
17797         /* Userspace can always count this one always being set */
17798         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17799                 goto nla_put_failure;
17800
17801         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17802                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17803                                NL80211_REGDOM_TYPE_WORLD))
17804                         goto nla_put_failure;
17805         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17806                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17807                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17808                         goto nla_put_failure;
17809         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17810                    request->intersect) {
17811                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17812                                NL80211_REGDOM_TYPE_INTERSECTION))
17813                         goto nla_put_failure;
17814         } else {
17815                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17816                                NL80211_REGDOM_TYPE_COUNTRY) ||
17817                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17818                                    request->alpha2))
17819                         goto nla_put_failure;
17820         }
17821
17822         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17823                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17824
17825                 if (wiphy &&
17826                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17827                         goto nla_put_failure;
17828
17829                 if (wiphy &&
17830                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17831                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17832                         goto nla_put_failure;
17833         }
17834
17835         return true;
17836
17837 nla_put_failure:
17838         return false;
17839 }
17840
17841 /*
17842  * This can happen on global regulatory changes or device specific settings
17843  * based on custom regulatory domains.
17844  */
17845 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17846                                      struct regulatory_request *request)
17847 {
17848         struct sk_buff *msg;
17849         void *hdr;
17850
17851         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17852         if (!msg)
17853                 return;
17854
17855         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17856         if (!hdr)
17857                 goto nla_put_failure;
17858
17859         if (!nl80211_reg_change_event_fill(msg, request))
17860                 goto nla_put_failure;
17861
17862         genlmsg_end(msg, hdr);
17863
17864         rcu_read_lock();
17865         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17866                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17867         rcu_read_unlock();
17868
17869         return;
17870
17871 nla_put_failure:
17872         nlmsg_free(msg);
17873 }
17874
17875 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17876                                     struct net_device *netdev,
17877                                     const u8 *buf, size_t len,
17878                                     enum nl80211_commands cmd, gfp_t gfp,
17879                                     int uapsd_queues, const u8 *req_ies,
17880                                     size_t req_ies_len, bool reconnect)
17881 {
17882         struct sk_buff *msg;
17883         void *hdr;
17884
17885         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17886         if (!msg)
17887                 return;
17888
17889         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17890         if (!hdr) {
17891                 nlmsg_free(msg);
17892                 return;
17893         }
17894
17895         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17896             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17897             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17898             (req_ies &&
17899              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17900                 goto nla_put_failure;
17901
17902         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17903                 goto nla_put_failure;
17904
17905         if (uapsd_queues >= 0) {
17906                 struct nlattr *nla_wmm =
17907                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17908                 if (!nla_wmm)
17909                         goto nla_put_failure;
17910
17911                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17912                                uapsd_queues))
17913                         goto nla_put_failure;
17914
17915                 nla_nest_end(msg, nla_wmm);
17916         }
17917
17918         genlmsg_end(msg, hdr);
17919
17920         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17921                                 NL80211_MCGRP_MLME, gfp);
17922         return;
17923
17924  nla_put_failure:
17925         nlmsg_free(msg);
17926 }
17927
17928 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17929                           struct net_device *netdev, const u8 *buf,
17930                           size_t len, gfp_t gfp)
17931 {
17932         nl80211_send_mlme_event(rdev, netdev, buf, len,
17933                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17934                                 false);
17935 }
17936
17937 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17938                            struct net_device *netdev,
17939                            struct cfg80211_rx_assoc_resp *data)
17940 {
17941         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17942                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17943                                 data->uapsd_queues,
17944                                 data->req_ies, data->req_ies_len, false);
17945 }
17946
17947 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17948                          struct net_device *netdev, const u8 *buf,
17949                          size_t len, bool reconnect, gfp_t gfp)
17950 {
17951         nl80211_send_mlme_event(rdev, netdev, buf, len,
17952                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17953                                 reconnect);
17954 }
17955
17956 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17957                            struct net_device *netdev, const u8 *buf,
17958                            size_t len, bool reconnect, gfp_t gfp)
17959 {
17960         nl80211_send_mlme_event(rdev, netdev, buf, len,
17961                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17962                                 reconnect);
17963 }
17964
17965 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17966                                   size_t len)
17967 {
17968         struct wireless_dev *wdev = dev->ieee80211_ptr;
17969         struct wiphy *wiphy = wdev->wiphy;
17970         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17971         const struct ieee80211_mgmt *mgmt = (void *)buf;
17972         u32 cmd;
17973
17974         if (WARN_ON(len < 2))
17975                 return;
17976
17977         if (ieee80211_is_deauth(mgmt->frame_control)) {
17978                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17979         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17980                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17981         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17982                 if (wdev->unprot_beacon_reported &&
17983                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17984                         return;
17985                 cmd = NL80211_CMD_UNPROT_BEACON;
17986                 wdev->unprot_beacon_reported = jiffies;
17987         } else {
17988                 return;
17989         }
17990
17991         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17992         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17993                                 NULL, 0, false);
17994 }
17995 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17996
17997 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17998                                       struct net_device *netdev, int cmd,
17999                                       const u8 *addr, gfp_t gfp)
18000 {
18001         struct sk_buff *msg;
18002         void *hdr;
18003
18004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18005         if (!msg)
18006                 return;
18007
18008         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18009         if (!hdr) {
18010                 nlmsg_free(msg);
18011                 return;
18012         }
18013
18014         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18015             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18016             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18017             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18018                 goto nla_put_failure;
18019
18020         genlmsg_end(msg, hdr);
18021
18022         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18023                                 NL80211_MCGRP_MLME, gfp);
18024         return;
18025
18026  nla_put_failure:
18027         nlmsg_free(msg);
18028 }
18029
18030 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18031                                struct net_device *netdev, const u8 *addr,
18032                                gfp_t gfp)
18033 {
18034         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18035                                   addr, gfp);
18036 }
18037
18038 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18039                                 struct net_device *netdev, const u8 *addr,
18040                                 gfp_t gfp)
18041 {
18042         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18043                                   addr, gfp);
18044 }
18045
18046 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18047                                  struct net_device *netdev,
18048                                  struct cfg80211_connect_resp_params *cr,
18049                                  gfp_t gfp)
18050 {
18051         struct sk_buff *msg;
18052         void *hdr;
18053         unsigned int link;
18054         size_t link_info_size = 0;
18055         const u8 *connected_addr = cr->valid_links ?
18056                                    cr->ap_mld_addr : cr->links[0].bssid;
18057
18058         if (cr->valid_links) {
18059                 for_each_valid_link(cr, link) {
18060                         /* Nested attribute header */
18061                         link_info_size += NLA_HDRLEN;
18062                         /* Link ID */
18063                         link_info_size += nla_total_size(sizeof(u8));
18064                         link_info_size += cr->links[link].addr ?
18065                                           nla_total_size(ETH_ALEN) : 0;
18066                         link_info_size += (cr->links[link].bssid ||
18067                                            cr->links[link].bss) ?
18068                                           nla_total_size(ETH_ALEN) : 0;
18069                         link_info_size += nla_total_size(sizeof(u16));
18070                 }
18071         }
18072
18073         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18074                         cr->fils.kek_len + cr->fils.pmk_len +
18075                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18076                         gfp);
18077         if (!msg)
18078                 return;
18079
18080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18081         if (!hdr) {
18082                 nlmsg_free(msg);
18083                 return;
18084         }
18085
18086         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18087             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18088             (connected_addr &&
18089              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18090             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18091                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18092                         cr->status) ||
18093             (cr->status < 0 &&
18094              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18095               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18096                           cr->timeout_reason))) ||
18097             (cr->req_ie &&
18098              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18099             (cr->resp_ie &&
18100              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18101                      cr->resp_ie)) ||
18102             (cr->fils.update_erp_next_seq_num &&
18103              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18104                          cr->fils.erp_next_seq_num)) ||
18105             (cr->status == WLAN_STATUS_SUCCESS &&
18106              ((cr->fils.kek &&
18107                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18108                        cr->fils.kek)) ||
18109               (cr->fils.pmk &&
18110                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18111               (cr->fils.pmkid &&
18112                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18113                 goto nla_put_failure;
18114
18115         if (cr->valid_links) {
18116                 int i = 1;
18117                 struct nlattr *nested;
18118
18119                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18120                 if (!nested)
18121                         goto nla_put_failure;
18122
18123                 for_each_valid_link(cr, link) {
18124                         struct nlattr *nested_mlo_links;
18125                         const u8 *bssid = cr->links[link].bss ?
18126                                           cr->links[link].bss->bssid :
18127                                           cr->links[link].bssid;
18128
18129                         nested_mlo_links = nla_nest_start(msg, i);
18130                         if (!nested_mlo_links)
18131                                 goto nla_put_failure;
18132
18133                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18134                             (bssid &&
18135                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18136                             (cr->links[link].addr &&
18137                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18138                                      cr->links[link].addr)) ||
18139                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18140                                         cr->links[link].status))
18141                                 goto nla_put_failure;
18142
18143                         nla_nest_end(msg, nested_mlo_links);
18144                         i++;
18145                 }
18146                 nla_nest_end(msg, nested);
18147         }
18148
18149         genlmsg_end(msg, hdr);
18150
18151         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18152                                 NL80211_MCGRP_MLME, gfp);
18153         return;
18154
18155  nla_put_failure:
18156         nlmsg_free(msg);
18157 }
18158
18159 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18160                          struct net_device *netdev,
18161                          struct cfg80211_roam_info *info, gfp_t gfp)
18162 {
18163         struct sk_buff *msg;
18164         void *hdr;
18165         size_t link_info_size = 0;
18166         unsigned int link;
18167         const u8 *connected_addr = info->ap_mld_addr ?
18168                                    info->ap_mld_addr :
18169                                    (info->links[0].bss ?
18170                                     info->links[0].bss->bssid :
18171                                     info->links[0].bssid);
18172
18173         if (info->valid_links) {
18174                 for_each_valid_link(info, link) {
18175                         /* Nested attribute header */
18176                         link_info_size += NLA_HDRLEN;
18177                         /* Link ID */
18178                         link_info_size += nla_total_size(sizeof(u8));
18179                         link_info_size += info->links[link].addr ?
18180                                           nla_total_size(ETH_ALEN) : 0;
18181                         link_info_size += (info->links[link].bssid ||
18182                                            info->links[link].bss) ?
18183                                           nla_total_size(ETH_ALEN) : 0;
18184                 }
18185         }
18186
18187         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18188                         info->fils.kek_len + info->fils.pmk_len +
18189                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18190                         link_info_size, gfp);
18191         if (!msg)
18192                 return;
18193
18194         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18195         if (!hdr) {
18196                 nlmsg_free(msg);
18197                 return;
18198         }
18199
18200         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18201             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18202             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18203             (info->req_ie &&
18204              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18205                      info->req_ie)) ||
18206             (info->resp_ie &&
18207              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18208                      info->resp_ie)) ||
18209             (info->fils.update_erp_next_seq_num &&
18210              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18211                          info->fils.erp_next_seq_num)) ||
18212             (info->fils.kek &&
18213              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18214                      info->fils.kek)) ||
18215             (info->fils.pmk &&
18216              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18217             (info->fils.pmkid &&
18218              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18219                 goto nla_put_failure;
18220
18221         if (info->valid_links) {
18222                 int i = 1;
18223                 struct nlattr *nested;
18224
18225                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18226                 if (!nested)
18227                         goto nla_put_failure;
18228
18229                 for_each_valid_link(info, link) {
18230                         struct nlattr *nested_mlo_links;
18231                         const u8 *bssid = info->links[link].bss ?
18232                                           info->links[link].bss->bssid :
18233                                           info->links[link].bssid;
18234
18235                         nested_mlo_links = nla_nest_start(msg, i);
18236                         if (!nested_mlo_links)
18237                                 goto nla_put_failure;
18238
18239                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18240                             (bssid &&
18241                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18242                             (info->links[link].addr &&
18243                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18244                                      info->links[link].addr)))
18245                                 goto nla_put_failure;
18246
18247                         nla_nest_end(msg, nested_mlo_links);
18248                         i++;
18249                 }
18250                 nla_nest_end(msg, nested);
18251         }
18252
18253         genlmsg_end(msg, hdr);
18254
18255         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18256                                 NL80211_MCGRP_MLME, gfp);
18257         return;
18258
18259  nla_put_failure:
18260         nlmsg_free(msg);
18261 }
18262
18263 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18264                                   struct net_device *netdev, const u8 *bssid,
18265                                   const u8 *td_bitmap, u8 td_bitmap_len)
18266 {
18267         struct sk_buff *msg;
18268         void *hdr;
18269
18270         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18271         if (!msg)
18272                 return;
18273
18274         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18275         if (!hdr) {
18276                 nlmsg_free(msg);
18277                 return;
18278         }
18279
18280         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18281             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18282             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18283                 goto nla_put_failure;
18284
18285         if ((td_bitmap_len > 0) && td_bitmap)
18286                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18287                             td_bitmap_len, td_bitmap))
18288                         goto nla_put_failure;
18289
18290         genlmsg_end(msg, hdr);
18291
18292         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18293                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18294         return;
18295
18296  nla_put_failure:
18297         nlmsg_free(msg);
18298 }
18299
18300 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18301                                struct net_device *netdev, u16 reason,
18302                                const u8 *ie, size_t ie_len, bool from_ap)
18303 {
18304         struct sk_buff *msg;
18305         void *hdr;
18306
18307         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18308         if (!msg)
18309                 return;
18310
18311         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18312         if (!hdr) {
18313                 nlmsg_free(msg);
18314                 return;
18315         }
18316
18317         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18318             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18319             (reason &&
18320              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18321             (from_ap &&
18322              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18323             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18324                 goto nla_put_failure;
18325
18326         genlmsg_end(msg, hdr);
18327
18328         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18329                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18330         return;
18331
18332  nla_put_failure:
18333         nlmsg_free(msg);
18334 }
18335
18336 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18337 {
18338         struct wireless_dev *wdev = dev->ieee80211_ptr;
18339         struct wiphy *wiphy = wdev->wiphy;
18340         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18341         struct sk_buff *msg;
18342         struct nlattr *links;
18343         void *hdr;
18344
18345         ASSERT_WDEV_LOCK(wdev);
18346         trace_cfg80211_links_removed(dev, link_mask);
18347
18348         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18349                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18350                 return;
18351
18352         if (WARN_ON(!wdev->valid_links || !link_mask ||
18353                     (wdev->valid_links & link_mask) != link_mask ||
18354                     wdev->valid_links == link_mask))
18355                 return;
18356
18357         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18358         wdev->valid_links &= ~link_mask;
18359
18360         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18361         if (!msg)
18362                 return;
18363
18364         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18365         if (!hdr) {
18366                 nlmsg_free(msg);
18367                 return;
18368         }
18369
18370         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18371             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18372                 goto nla_put_failure;
18373
18374         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18375         if (!links)
18376                 goto nla_put_failure;
18377
18378         while (link_mask) {
18379                 struct nlattr *link;
18380                 int link_id = __ffs(link_mask);
18381
18382                 link = nla_nest_start(msg, link_id + 1);
18383                 if (!link)
18384                         goto nla_put_failure;
18385
18386                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18387                         goto nla_put_failure;
18388
18389                 nla_nest_end(msg, link);
18390                 link_mask &= ~(1 << link_id);
18391         }
18392
18393         nla_nest_end(msg, links);
18394
18395         genlmsg_end(msg, hdr);
18396
18397         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18398                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18399         return;
18400
18401  nla_put_failure:
18402         nlmsg_free(msg);
18403 }
18404 EXPORT_SYMBOL(cfg80211_links_removed);
18405
18406 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18407                              struct net_device *netdev, const u8 *bssid,
18408                              gfp_t gfp)
18409 {
18410         struct sk_buff *msg;
18411         void *hdr;
18412
18413         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18414         if (!msg)
18415                 return;
18416
18417         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18418         if (!hdr) {
18419                 nlmsg_free(msg);
18420                 return;
18421         }
18422
18423         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18424             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18425             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18426                 goto nla_put_failure;
18427
18428         genlmsg_end(msg, hdr);
18429
18430         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18431                                 NL80211_MCGRP_MLME, gfp);
18432         return;
18433
18434  nla_put_failure:
18435         nlmsg_free(msg);
18436 }
18437
18438 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18439                                         const u8 *ie, u8 ie_len,
18440                                         int sig_dbm, gfp_t gfp)
18441 {
18442         struct wireless_dev *wdev = dev->ieee80211_ptr;
18443         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18444         struct sk_buff *msg;
18445         void *hdr;
18446
18447         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18448                 return;
18449
18450         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18451
18452         msg = nlmsg_new(100 + ie_len, gfp);
18453         if (!msg)
18454                 return;
18455
18456         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18457         if (!hdr) {
18458                 nlmsg_free(msg);
18459                 return;
18460         }
18461
18462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18464             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18465             (ie_len && ie &&
18466              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18467             (sig_dbm &&
18468              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18469                 goto nla_put_failure;
18470
18471         genlmsg_end(msg, hdr);
18472
18473         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18474                                 NL80211_MCGRP_MLME, gfp);
18475         return;
18476
18477  nla_put_failure:
18478         nlmsg_free(msg);
18479 }
18480 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18481
18482 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18483                                  struct net_device *netdev, const u8 *addr,
18484                                  enum nl80211_key_type key_type, int key_id,
18485                                  const u8 *tsc, gfp_t gfp)
18486 {
18487         struct sk_buff *msg;
18488         void *hdr;
18489
18490         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18491         if (!msg)
18492                 return;
18493
18494         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18495         if (!hdr) {
18496                 nlmsg_free(msg);
18497                 return;
18498         }
18499
18500         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18501             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18502             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18503             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18504             (key_id != -1 &&
18505              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18506             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18507                 goto nla_put_failure;
18508
18509         genlmsg_end(msg, hdr);
18510
18511         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18512                                 NL80211_MCGRP_MLME, gfp);
18513         return;
18514
18515  nla_put_failure:
18516         nlmsg_free(msg);
18517 }
18518
18519 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18520                                     struct ieee80211_channel *channel_before,
18521                                     struct ieee80211_channel *channel_after)
18522 {
18523         struct sk_buff *msg;
18524         void *hdr;
18525         struct nlattr *nl_freq;
18526
18527         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18528         if (!msg)
18529                 return;
18530
18531         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18532         if (!hdr) {
18533                 nlmsg_free(msg);
18534                 return;
18535         }
18536
18537         /*
18538          * Since we are applying the beacon hint to a wiphy we know its
18539          * wiphy_idx is valid
18540          */
18541         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18542                 goto nla_put_failure;
18543
18544         /* Before */
18545         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18546         if (!nl_freq)
18547                 goto nla_put_failure;
18548
18549         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18550                 goto nla_put_failure;
18551         nla_nest_end(msg, nl_freq);
18552
18553         /* After */
18554         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18555         if (!nl_freq)
18556                 goto nla_put_failure;
18557
18558         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18559                 goto nla_put_failure;
18560         nla_nest_end(msg, nl_freq);
18561
18562         genlmsg_end(msg, hdr);
18563
18564         rcu_read_lock();
18565         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18566                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18567         rcu_read_unlock();
18568
18569         return;
18570
18571 nla_put_failure:
18572         nlmsg_free(msg);
18573 }
18574
18575 static void nl80211_send_remain_on_chan_event(
18576         int cmd, struct cfg80211_registered_device *rdev,
18577         struct wireless_dev *wdev, u64 cookie,
18578         struct ieee80211_channel *chan,
18579         unsigned int duration, gfp_t gfp)
18580 {
18581         struct sk_buff *msg;
18582         void *hdr;
18583
18584         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18585         if (!msg)
18586                 return;
18587
18588         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18589         if (!hdr) {
18590                 nlmsg_free(msg);
18591                 return;
18592         }
18593
18594         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18595             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18596                                          wdev->netdev->ifindex)) ||
18597             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18598                               NL80211_ATTR_PAD) ||
18599             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18600             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18601                         NL80211_CHAN_NO_HT) ||
18602             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18603                               NL80211_ATTR_PAD))
18604                 goto nla_put_failure;
18605
18606         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18607             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18608                 goto nla_put_failure;
18609
18610         genlmsg_end(msg, hdr);
18611
18612         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18613                                 NL80211_MCGRP_MLME, gfp);
18614         return;
18615
18616  nla_put_failure:
18617         nlmsg_free(msg);
18618 }
18619
18620 void cfg80211_assoc_comeback(struct net_device *netdev,
18621                              const u8 *ap_addr, u32 timeout)
18622 {
18623         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18624         struct wiphy *wiphy = wdev->wiphy;
18625         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18626         struct sk_buff *msg;
18627         void *hdr;
18628
18629         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18630
18631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18632         if (!msg)
18633                 return;
18634
18635         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18636         if (!hdr) {
18637                 nlmsg_free(msg);
18638                 return;
18639         }
18640
18641         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18642             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18643             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18644             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18645                 goto nla_put_failure;
18646
18647         genlmsg_end(msg, hdr);
18648
18649         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18650                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18651         return;
18652
18653  nla_put_failure:
18654         nlmsg_free(msg);
18655 }
18656 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18657
18658 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18659                                struct ieee80211_channel *chan,
18660                                unsigned int duration, gfp_t gfp)
18661 {
18662         struct wiphy *wiphy = wdev->wiphy;
18663         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18664
18665         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18666         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18667                                           rdev, wdev, cookie, chan,
18668                                           duration, gfp);
18669 }
18670 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18671
18672 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18673                                         struct ieee80211_channel *chan,
18674                                         gfp_t gfp)
18675 {
18676         struct wiphy *wiphy = wdev->wiphy;
18677         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18678
18679         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18680         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18681                                           rdev, wdev, cookie, chan, 0, gfp);
18682 }
18683 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18684
18685 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18686                                         struct ieee80211_channel *chan,
18687                                         gfp_t gfp)
18688 {
18689         struct wiphy *wiphy = wdev->wiphy;
18690         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18691
18692         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18693         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18694                                           rdev, wdev, cookie, chan, 0, gfp);
18695 }
18696 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18697
18698 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18699                       struct station_info *sinfo, gfp_t gfp)
18700 {
18701         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18702         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18703         struct sk_buff *msg;
18704
18705         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18706
18707         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18708         if (!msg)
18709                 return;
18710
18711         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18712                                  rdev, dev, mac_addr, sinfo) < 0) {
18713                 nlmsg_free(msg);
18714                 return;
18715         }
18716
18717         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18718                                 NL80211_MCGRP_MLME, gfp);
18719 }
18720 EXPORT_SYMBOL(cfg80211_new_sta);
18721
18722 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18723                             struct station_info *sinfo, gfp_t gfp)
18724 {
18725         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18726         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18727         struct sk_buff *msg;
18728         struct station_info empty_sinfo = {};
18729
18730         if (!sinfo)
18731                 sinfo = &empty_sinfo;
18732
18733         trace_cfg80211_del_sta(dev, mac_addr);
18734
18735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18736         if (!msg) {
18737                 cfg80211_sinfo_release_content(sinfo);
18738                 return;
18739         }
18740
18741         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18742                                  rdev, dev, mac_addr, sinfo) < 0) {
18743                 nlmsg_free(msg);
18744                 return;
18745         }
18746
18747         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18748                                 NL80211_MCGRP_MLME, gfp);
18749 }
18750 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18751
18752 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18753                           enum nl80211_connect_failed_reason reason,
18754                           gfp_t gfp)
18755 {
18756         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18757         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18758         struct sk_buff *msg;
18759         void *hdr;
18760
18761         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18762         if (!msg)
18763                 return;
18764
18765         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18766         if (!hdr) {
18767                 nlmsg_free(msg);
18768                 return;
18769         }
18770
18771         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18772             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18773             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18774                 goto nla_put_failure;
18775
18776         genlmsg_end(msg, hdr);
18777
18778         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18779                                 NL80211_MCGRP_MLME, gfp);
18780         return;
18781
18782  nla_put_failure:
18783         nlmsg_free(msg);
18784 }
18785 EXPORT_SYMBOL(cfg80211_conn_failed);
18786
18787 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18788                                        const u8 *addr, gfp_t gfp)
18789 {
18790         struct wireless_dev *wdev = dev->ieee80211_ptr;
18791         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18792         struct sk_buff *msg;
18793         void *hdr;
18794         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18795
18796         if (!nlportid)
18797                 return false;
18798
18799         msg = nlmsg_new(100, gfp);
18800         if (!msg)
18801                 return true;
18802
18803         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18804         if (!hdr) {
18805                 nlmsg_free(msg);
18806                 return true;
18807         }
18808
18809         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18810             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18811             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18812                 goto nla_put_failure;
18813
18814         genlmsg_end(msg, hdr);
18815         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18816         return true;
18817
18818  nla_put_failure:
18819         nlmsg_free(msg);
18820         return true;
18821 }
18822
18823 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18824                                 const u8 *addr, gfp_t gfp)
18825 {
18826         struct wireless_dev *wdev = dev->ieee80211_ptr;
18827         bool ret;
18828
18829         trace_cfg80211_rx_spurious_frame(dev, addr);
18830
18831         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18832                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18833                 trace_cfg80211_return_bool(false);
18834                 return false;
18835         }
18836         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18837                                          addr, gfp);
18838         trace_cfg80211_return_bool(ret);
18839         return ret;
18840 }
18841 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18842
18843 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18844                                         const u8 *addr, gfp_t gfp)
18845 {
18846         struct wireless_dev *wdev = dev->ieee80211_ptr;
18847         bool ret;
18848
18849         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18850
18851         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18852                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18853                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18854                 trace_cfg80211_return_bool(false);
18855                 return false;
18856         }
18857         ret = __nl80211_unexpected_frame(dev,
18858                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18859                                          addr, gfp);
18860         trace_cfg80211_return_bool(ret);
18861         return ret;
18862 }
18863 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18864
18865 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18866                       struct wireless_dev *wdev, u32 nlportid,
18867                       struct cfg80211_rx_info *info, gfp_t gfp)
18868 {
18869         struct net_device *netdev = wdev->netdev;
18870         struct sk_buff *msg;
18871         void *hdr;
18872
18873         msg = nlmsg_new(100 + info->len, gfp);
18874         if (!msg)
18875                 return -ENOMEM;
18876
18877         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18878         if (!hdr) {
18879                 nlmsg_free(msg);
18880                 return -ENOMEM;
18881         }
18882
18883         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18884             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18885                                         netdev->ifindex)) ||
18886             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18887                               NL80211_ATTR_PAD) ||
18888             (info->have_link_id &&
18889              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18890             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18891             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18892             (info->sig_dbm &&
18893              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18894             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18895             (info->flags &&
18896              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18897             (info->rx_tstamp && nla_put_u64_64bit(msg,
18898                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18899                                                   info->rx_tstamp,
18900                                                   NL80211_ATTR_PAD)) ||
18901             (info->ack_tstamp && nla_put_u64_64bit(msg,
18902                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18903                                                    info->ack_tstamp,
18904                                                    NL80211_ATTR_PAD)))
18905                 goto nla_put_failure;
18906
18907         genlmsg_end(msg, hdr);
18908
18909         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18910
18911  nla_put_failure:
18912         nlmsg_free(msg);
18913         return -ENOBUFS;
18914 }
18915
18916 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18917                                     struct cfg80211_tx_status *status,
18918                                     gfp_t gfp, enum nl80211_commands command)
18919 {
18920         struct wiphy *wiphy = wdev->wiphy;
18921         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18922         struct net_device *netdev = wdev->netdev;
18923         struct sk_buff *msg;
18924         void *hdr;
18925
18926         if (command == NL80211_CMD_FRAME_TX_STATUS)
18927                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18928                                               status->ack);
18929         else
18930                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18931                                                       status->ack);
18932
18933         msg = nlmsg_new(100 + status->len, gfp);
18934         if (!msg)
18935                 return;
18936
18937         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18938         if (!hdr) {
18939                 nlmsg_free(msg);
18940                 return;
18941         }
18942
18943         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18944             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18945                                    netdev->ifindex)) ||
18946             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18947                               NL80211_ATTR_PAD) ||
18948             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18949             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18950                               NL80211_ATTR_PAD) ||
18951             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18952             (status->tx_tstamp &&
18953              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18954                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18955             (status->ack_tstamp &&
18956              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18957                                status->ack_tstamp, NL80211_ATTR_PAD)))
18958                 goto nla_put_failure;
18959
18960         genlmsg_end(msg, hdr);
18961
18962         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18963                                 NL80211_MCGRP_MLME, gfp);
18964         return;
18965
18966 nla_put_failure:
18967         nlmsg_free(msg);
18968 }
18969
18970 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18971                                      const u8 *buf, size_t len, bool ack,
18972                                      gfp_t gfp)
18973 {
18974         struct cfg80211_tx_status status = {
18975                 .cookie = cookie,
18976                 .buf = buf,
18977                 .len = len,
18978                 .ack = ack
18979         };
18980
18981         nl80211_frame_tx_status(wdev, &status, gfp,
18982                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18983 }
18984 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18985
18986 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18987                                  struct cfg80211_tx_status *status, gfp_t gfp)
18988 {
18989         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18990 }
18991 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18992
18993 static int __nl80211_rx_control_port(struct net_device *dev,
18994                                      struct sk_buff *skb,
18995                                      bool unencrypted,
18996                                      int link_id,
18997                                      gfp_t gfp)
18998 {
18999         struct wireless_dev *wdev = dev->ieee80211_ptr;
19000         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19001         struct ethhdr *ehdr = eth_hdr(skb);
19002         const u8 *addr = ehdr->h_source;
19003         u16 proto = be16_to_cpu(skb->protocol);
19004         struct sk_buff *msg;
19005         void *hdr;
19006         struct nlattr *frame;
19007
19008         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
19009
19010         if (!nlportid)
19011                 return -ENOENT;
19012
19013         msg = nlmsg_new(100 + skb->len, gfp);
19014         if (!msg)
19015                 return -ENOMEM;
19016
19017         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
19018         if (!hdr) {
19019                 nlmsg_free(msg);
19020                 return -ENOBUFS;
19021         }
19022
19023         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19024             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19025             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19026                               NL80211_ATTR_PAD) ||
19027             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19028             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19029             (link_id >= 0 &&
19030              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19031             (unencrypted && nla_put_flag(msg,
19032                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19033                 goto nla_put_failure;
19034
19035         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19036         if (!frame)
19037                 goto nla_put_failure;
19038
19039         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19040         genlmsg_end(msg, hdr);
19041
19042         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19043
19044  nla_put_failure:
19045         nlmsg_free(msg);
19046         return -ENOBUFS;
19047 }
19048
19049 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19050                               bool unencrypted, int link_id)
19051 {
19052         int ret;
19053
19054         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19055         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19056                                         GFP_ATOMIC);
19057         trace_cfg80211_return_bool(ret == 0);
19058         return ret == 0;
19059 }
19060 EXPORT_SYMBOL(cfg80211_rx_control_port);
19061
19062 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19063                                             const char *mac, gfp_t gfp)
19064 {
19065         struct wireless_dev *wdev = dev->ieee80211_ptr;
19066         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19067         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19068         void **cb;
19069
19070         if (!msg)
19071                 return NULL;
19072
19073         cb = (void **)msg->cb;
19074
19075         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19076         if (!cb[0]) {
19077                 nlmsg_free(msg);
19078                 return NULL;
19079         }
19080
19081         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19082             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19083                 goto nla_put_failure;
19084
19085         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19086                 goto nla_put_failure;
19087
19088         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19089         if (!cb[1])
19090                 goto nla_put_failure;
19091
19092         cb[2] = rdev;
19093
19094         return msg;
19095  nla_put_failure:
19096         nlmsg_free(msg);
19097         return NULL;
19098 }
19099
19100 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19101 {
19102         void **cb = (void **)msg->cb;
19103         struct cfg80211_registered_device *rdev = cb[2];
19104
19105         nla_nest_end(msg, cb[1]);
19106         genlmsg_end(msg, cb[0]);
19107
19108         memset(msg->cb, 0, sizeof(msg->cb));
19109
19110         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19111                                 NL80211_MCGRP_MLME, gfp);
19112 }
19113
19114 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19115                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19116                               s32 rssi_level, gfp_t gfp)
19117 {
19118         struct wireless_dev *wdev = dev->ieee80211_ptr;
19119         struct cfg80211_cqm_config *cqm_config;
19120
19121         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19122
19123         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19124                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19125                 return;
19126
19127         rcu_read_lock();
19128         cqm_config = rcu_dereference(wdev->cqm_config);
19129         if (cqm_config) {
19130                 cqm_config->last_rssi_event_value = rssi_level;
19131                 cqm_config->last_rssi_event_type = rssi_event;
19132                 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19133         }
19134         rcu_read_unlock();
19135 }
19136 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19137
19138 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19139 {
19140         struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19141                                                  cqm_rssi_work);
19142         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19143         enum nl80211_cqm_rssi_threshold_event rssi_event;
19144         struct cfg80211_cqm_config *cqm_config;
19145         struct sk_buff *msg;
19146         s32 rssi_level;
19147
19148         wdev_lock(wdev);
19149         cqm_config = rcu_dereference_protected(wdev->cqm_config,
19150                                                lockdep_is_held(&wdev->mtx));
19151         if (!cqm_config)
19152                 goto unlock;
19153
19154         if (cqm_config->use_range_api)
19155                 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19156
19157         rssi_level = cqm_config->last_rssi_event_value;
19158         rssi_event = cqm_config->last_rssi_event_type;
19159
19160         msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19161         if (!msg)
19162                 goto unlock;
19163
19164         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19165                         rssi_event))
19166                 goto nla_put_failure;
19167
19168         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19169                                       rssi_level))
19170                 goto nla_put_failure;
19171
19172         cfg80211_send_cqm(msg, GFP_KERNEL);
19173
19174         goto unlock;
19175
19176  nla_put_failure:
19177         nlmsg_free(msg);
19178  unlock:
19179         wdev_unlock(wdev);
19180 }
19181
19182 void cfg80211_cqm_txe_notify(struct net_device *dev,
19183                              const u8 *peer, u32 num_packets,
19184                              u32 rate, u32 intvl, gfp_t gfp)
19185 {
19186         struct sk_buff *msg;
19187
19188         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19189         if (!msg)
19190                 return;
19191
19192         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19193                 goto nla_put_failure;
19194
19195         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19196                 goto nla_put_failure;
19197
19198         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19199                 goto nla_put_failure;
19200
19201         cfg80211_send_cqm(msg, gfp);
19202         return;
19203
19204  nla_put_failure:
19205         nlmsg_free(msg);
19206 }
19207 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19208
19209 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19210                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19211 {
19212         struct sk_buff *msg;
19213
19214         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19215
19216         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19217         if (!msg)
19218                 return;
19219
19220         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19221                 goto nla_put_failure;
19222
19223         cfg80211_send_cqm(msg, gfp);
19224         return;
19225
19226  nla_put_failure:
19227         nlmsg_free(msg);
19228 }
19229 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19230
19231 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19232 {
19233         struct sk_buff *msg;
19234
19235         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19236         if (!msg)
19237                 return;
19238
19239         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19240                 goto nla_put_failure;
19241
19242         cfg80211_send_cqm(msg, gfp);
19243         return;
19244
19245  nla_put_failure:
19246         nlmsg_free(msg);
19247 }
19248 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19249
19250 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19251                                      struct net_device *netdev, const u8 *bssid,
19252                                      const u8 *replay_ctr, gfp_t gfp)
19253 {
19254         struct sk_buff *msg;
19255         struct nlattr *rekey_attr;
19256         void *hdr;
19257
19258         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19259         if (!msg)
19260                 return;
19261
19262         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19263         if (!hdr) {
19264                 nlmsg_free(msg);
19265                 return;
19266         }
19267
19268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19269             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19270             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19271                 goto nla_put_failure;
19272
19273         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19274         if (!rekey_attr)
19275                 goto nla_put_failure;
19276
19277         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19278                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19279                 goto nla_put_failure;
19280
19281         nla_nest_end(msg, rekey_attr);
19282
19283         genlmsg_end(msg, hdr);
19284
19285         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19286                                 NL80211_MCGRP_MLME, gfp);
19287         return;
19288
19289  nla_put_failure:
19290         nlmsg_free(msg);
19291 }
19292
19293 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19294                                const u8 *replay_ctr, gfp_t gfp)
19295 {
19296         struct wireless_dev *wdev = dev->ieee80211_ptr;
19297         struct wiphy *wiphy = wdev->wiphy;
19298         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19299
19300         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19301         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19302 }
19303 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19304
19305 static void
19306 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19307                                struct net_device *netdev, int index,
19308                                const u8 *bssid, bool preauth, gfp_t gfp)
19309 {
19310         struct sk_buff *msg;
19311         struct nlattr *attr;
19312         void *hdr;
19313
19314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19315         if (!msg)
19316                 return;
19317
19318         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19319         if (!hdr) {
19320                 nlmsg_free(msg);
19321                 return;
19322         }
19323
19324         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19325             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19326                 goto nla_put_failure;
19327
19328         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19329         if (!attr)
19330                 goto nla_put_failure;
19331
19332         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19333             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19334             (preauth &&
19335              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19336                 goto nla_put_failure;
19337
19338         nla_nest_end(msg, attr);
19339
19340         genlmsg_end(msg, hdr);
19341
19342         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19343                                 NL80211_MCGRP_MLME, gfp);
19344         return;
19345
19346  nla_put_failure:
19347         nlmsg_free(msg);
19348 }
19349
19350 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19351                                      const u8 *bssid, bool preauth, gfp_t gfp)
19352 {
19353         struct wireless_dev *wdev = dev->ieee80211_ptr;
19354         struct wiphy *wiphy = wdev->wiphy;
19355         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19356
19357         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19358         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19359 }
19360 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19361
19362 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19363                                      struct net_device *netdev,
19364                                      unsigned int link_id,
19365                                      struct cfg80211_chan_def *chandef,
19366                                      gfp_t gfp,
19367                                      enum nl80211_commands notif,
19368                                      u8 count, bool quiet, u16 punct_bitmap)
19369 {
19370         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19371         struct sk_buff *msg;
19372         void *hdr;
19373
19374         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19375         if (!msg)
19376                 return;
19377
19378         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19379         if (!hdr) {
19380                 nlmsg_free(msg);
19381                 return;
19382         }
19383
19384         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19385                 goto nla_put_failure;
19386
19387         if (wdev->valid_links &&
19388             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19389                 goto nla_put_failure;
19390
19391         if (nl80211_send_chandef(msg, chandef))
19392                 goto nla_put_failure;
19393
19394         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19395                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19396                         goto nla_put_failure;
19397                 if (quiet &&
19398                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19399                         goto nla_put_failure;
19400         }
19401
19402         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19403                 goto nla_put_failure;
19404
19405         genlmsg_end(msg, hdr);
19406
19407         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19408                                 NL80211_MCGRP_MLME, gfp);
19409         return;
19410
19411  nla_put_failure:
19412         nlmsg_free(msg);
19413 }
19414
19415 void cfg80211_ch_switch_notify(struct net_device *dev,
19416                                struct cfg80211_chan_def *chandef,
19417                                unsigned int link_id, u16 punct_bitmap)
19418 {
19419         struct wireless_dev *wdev = dev->ieee80211_ptr;
19420         struct wiphy *wiphy = wdev->wiphy;
19421         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19422
19423         ASSERT_WDEV_LOCK(wdev);
19424         WARN_INVALID_LINK_ID(wdev, link_id);
19425
19426         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19427
19428         switch (wdev->iftype) {
19429         case NL80211_IFTYPE_STATION:
19430         case NL80211_IFTYPE_P2P_CLIENT:
19431                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19432                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19433                                                         chandef->chan);
19434                 break;
19435         case NL80211_IFTYPE_MESH_POINT:
19436                 wdev->u.mesh.chandef = *chandef;
19437                 wdev->u.mesh.preset_chandef = *chandef;
19438                 break;
19439         case NL80211_IFTYPE_AP:
19440         case NL80211_IFTYPE_P2P_GO:
19441                 wdev->links[link_id].ap.chandef = *chandef;
19442                 break;
19443         case NL80211_IFTYPE_ADHOC:
19444                 wdev->u.ibss.chandef = *chandef;
19445                 break;
19446         default:
19447                 WARN_ON(1);
19448                 break;
19449         }
19450
19451         cfg80211_sched_dfs_chan_update(rdev);
19452
19453         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19454                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19455                                  punct_bitmap);
19456 }
19457 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19458
19459 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19460                                        struct cfg80211_chan_def *chandef,
19461                                        unsigned int link_id, u8 count,
19462                                        bool quiet, u16 punct_bitmap)
19463 {
19464         struct wireless_dev *wdev = dev->ieee80211_ptr;
19465         struct wiphy *wiphy = wdev->wiphy;
19466         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19467
19468         ASSERT_WDEV_LOCK(wdev);
19469         WARN_INVALID_LINK_ID(wdev, link_id);
19470
19471         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19472                                                 punct_bitmap);
19473
19474
19475         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19476                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19477                                  count, quiet, punct_bitmap);
19478 }
19479 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19480
19481 int cfg80211_bss_color_notify(struct net_device *dev,
19482                               enum nl80211_commands cmd, u8 count,
19483                               u64 color_bitmap)
19484 {
19485         struct wireless_dev *wdev = dev->ieee80211_ptr;
19486         struct wiphy *wiphy = wdev->wiphy;
19487         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19488         struct sk_buff *msg;
19489         void *hdr;
19490
19491         ASSERT_WDEV_LOCK(wdev);
19492
19493         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19494
19495         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19496         if (!msg)
19497                 return -ENOMEM;
19498
19499         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19500         if (!hdr)
19501                 goto nla_put_failure;
19502
19503         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19504                 goto nla_put_failure;
19505
19506         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19507             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19508                 goto nla_put_failure;
19509
19510         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19511             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19512                               color_bitmap, NL80211_ATTR_PAD))
19513                 goto nla_put_failure;
19514
19515         genlmsg_end(msg, hdr);
19516
19517         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19518                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19519
19520 nla_put_failure:
19521         nlmsg_free(msg);
19522         return -EINVAL;
19523 }
19524 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19525
19526 void
19527 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19528                      const struct cfg80211_chan_def *chandef,
19529                      enum nl80211_radar_event event,
19530                      struct net_device *netdev, gfp_t gfp)
19531 {
19532         struct sk_buff *msg;
19533         void *hdr;
19534
19535         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19536         if (!msg)
19537                 return;
19538
19539         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19540         if (!hdr) {
19541                 nlmsg_free(msg);
19542                 return;
19543         }
19544
19545         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19546                 goto nla_put_failure;
19547
19548         /* NOP and radar events don't need a netdev parameter */
19549         if (netdev) {
19550                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19551
19552                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19553                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19554                                       NL80211_ATTR_PAD))
19555                         goto nla_put_failure;
19556         }
19557
19558         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19559                 goto nla_put_failure;
19560
19561         if (nl80211_send_chandef(msg, chandef))
19562                 goto nla_put_failure;
19563
19564         genlmsg_end(msg, hdr);
19565
19566         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19567                                 NL80211_MCGRP_MLME, gfp);
19568         return;
19569
19570  nla_put_failure:
19571         nlmsg_free(msg);
19572 }
19573
19574 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19575                                        struct sta_opmode_info *sta_opmode,
19576                                        gfp_t gfp)
19577 {
19578         struct sk_buff *msg;
19579         struct wireless_dev *wdev = dev->ieee80211_ptr;
19580         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19581         void *hdr;
19582
19583         if (WARN_ON(!mac))
19584                 return;
19585
19586         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19587         if (!msg)
19588                 return;
19589
19590         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19591         if (!hdr) {
19592                 nlmsg_free(msg);
19593                 return;
19594         }
19595
19596         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19597                 goto nla_put_failure;
19598
19599         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19600                 goto nla_put_failure;
19601
19602         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19603                 goto nla_put_failure;
19604
19605         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19606             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19607                 goto nla_put_failure;
19608
19609         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19610             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19611                 goto nla_put_failure;
19612
19613         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19614             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19615                 goto nla_put_failure;
19616
19617         genlmsg_end(msg, hdr);
19618
19619         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19620                                 NL80211_MCGRP_MLME, gfp);
19621
19622         return;
19623
19624 nla_put_failure:
19625         nlmsg_free(msg);
19626 }
19627 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19628
19629 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19630                            u64 cookie, bool acked, s32 ack_signal,
19631                            bool is_valid_ack_signal, gfp_t gfp)
19632 {
19633         struct wireless_dev *wdev = dev->ieee80211_ptr;
19634         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19635         struct sk_buff *msg;
19636         void *hdr;
19637
19638         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19639
19640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19641
19642         if (!msg)
19643                 return;
19644
19645         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19646         if (!hdr) {
19647                 nlmsg_free(msg);
19648                 return;
19649         }
19650
19651         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19652             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19653             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19654             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19655                               NL80211_ATTR_PAD) ||
19656             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19657             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19658                                                 ack_signal)))
19659                 goto nla_put_failure;
19660
19661         genlmsg_end(msg, hdr);
19662
19663         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19664                                 NL80211_MCGRP_MLME, gfp);
19665         return;
19666
19667  nla_put_failure:
19668         nlmsg_free(msg);
19669 }
19670 EXPORT_SYMBOL(cfg80211_probe_status);
19671
19672 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19673                                      size_t len, int freq, int sig_dbm)
19674 {
19675         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19676         struct sk_buff *msg;
19677         void *hdr;
19678         struct cfg80211_beacon_registration *reg;
19679
19680         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19681
19682         spin_lock_bh(&rdev->beacon_registrations_lock);
19683         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19684                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19685                 if (!msg) {
19686                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19687                         return;
19688                 }
19689
19690                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19691                 if (!hdr)
19692                         goto nla_put_failure;
19693
19694                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19695                     (freq &&
19696                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19697                                   KHZ_TO_MHZ(freq)) ||
19698                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19699                                   freq % 1000))) ||
19700                     (sig_dbm &&
19701                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19702                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19703                         goto nla_put_failure;
19704
19705                 genlmsg_end(msg, hdr);
19706
19707                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19708         }
19709         spin_unlock_bh(&rdev->beacon_registrations_lock);
19710         return;
19711
19712  nla_put_failure:
19713         spin_unlock_bh(&rdev->beacon_registrations_lock);
19714         nlmsg_free(msg);
19715 }
19716 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19717
19718 #ifdef CONFIG_PM
19719 static int cfg80211_net_detect_results(struct sk_buff *msg,
19720                                        struct cfg80211_wowlan_wakeup *wakeup)
19721 {
19722         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19723         struct nlattr *nl_results, *nl_match, *nl_freqs;
19724         int i, j;
19725
19726         nl_results = nla_nest_start_noflag(msg,
19727                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19728         if (!nl_results)
19729                 return -EMSGSIZE;
19730
19731         for (i = 0; i < nd->n_matches; i++) {
19732                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19733
19734                 nl_match = nla_nest_start_noflag(msg, i);
19735                 if (!nl_match)
19736                         break;
19737
19738                 /* The SSID attribute is optional in nl80211, but for
19739                  * simplicity reasons it's always present in the
19740                  * cfg80211 structure.  If a driver can't pass the
19741                  * SSID, that needs to be changed.  A zero length SSID
19742                  * is still a valid SSID (wildcard), so it cannot be
19743                  * used for this purpose.
19744                  */
19745                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19746                             match->ssid.ssid)) {
19747                         nla_nest_cancel(msg, nl_match);
19748                         goto out;
19749                 }
19750
19751                 if (match->n_channels) {
19752                         nl_freqs = nla_nest_start_noflag(msg,
19753                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19754                         if (!nl_freqs) {
19755                                 nla_nest_cancel(msg, nl_match);
19756                                 goto out;
19757                         }
19758
19759                         for (j = 0; j < match->n_channels; j++) {
19760                                 if (nla_put_u32(msg, j, match->channels[j])) {
19761                                         nla_nest_cancel(msg, nl_freqs);
19762                                         nla_nest_cancel(msg, nl_match);
19763                                         goto out;
19764                                 }
19765                         }
19766
19767                         nla_nest_end(msg, nl_freqs);
19768                 }
19769
19770                 nla_nest_end(msg, nl_match);
19771         }
19772
19773 out:
19774         nla_nest_end(msg, nl_results);
19775         return 0;
19776 }
19777
19778 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19779                                    struct cfg80211_wowlan_wakeup *wakeup,
19780                                    gfp_t gfp)
19781 {
19782         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19783         struct sk_buff *msg;
19784         void *hdr;
19785         int size = 200;
19786
19787         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19788
19789         if (wakeup)
19790                 size += wakeup->packet_present_len;
19791
19792         msg = nlmsg_new(size, gfp);
19793         if (!msg)
19794                 return;
19795
19796         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19797         if (!hdr)
19798                 goto free_msg;
19799
19800         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19801             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19802                               NL80211_ATTR_PAD))
19803                 goto free_msg;
19804
19805         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19806                                         wdev->netdev->ifindex))
19807                 goto free_msg;
19808
19809         if (wakeup) {
19810                 struct nlattr *reasons;
19811
19812                 reasons = nla_nest_start_noflag(msg,
19813                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19814                 if (!reasons)
19815                         goto free_msg;
19816
19817                 if (wakeup->disconnect &&
19818                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19819                         goto free_msg;
19820                 if (wakeup->magic_pkt &&
19821                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19822                         goto free_msg;
19823                 if (wakeup->gtk_rekey_failure &&
19824                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19825                         goto free_msg;
19826                 if (wakeup->eap_identity_req &&
19827                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19828                         goto free_msg;
19829                 if (wakeup->four_way_handshake &&
19830                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19831                         goto free_msg;
19832                 if (wakeup->rfkill_release &&
19833                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19834                         goto free_msg;
19835
19836                 if (wakeup->pattern_idx >= 0 &&
19837                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19838                                 wakeup->pattern_idx))
19839                         goto free_msg;
19840
19841                 if (wakeup->tcp_match &&
19842                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19843                         goto free_msg;
19844
19845                 if (wakeup->tcp_connlost &&
19846                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19847                         goto free_msg;
19848
19849                 if (wakeup->tcp_nomoretokens &&
19850                     nla_put_flag(msg,
19851                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19852                         goto free_msg;
19853
19854                 if (wakeup->packet) {
19855                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19856                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19857
19858                         if (!wakeup->packet_80211) {
19859                                 pkt_attr =
19860                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19861                                 len_attr =
19862                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19863                         }
19864
19865                         if (wakeup->packet_len &&
19866                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19867                                 goto free_msg;
19868
19869                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19870                                     wakeup->packet))
19871                                 goto free_msg;
19872                 }
19873
19874                 if (wakeup->net_detect &&
19875                     cfg80211_net_detect_results(msg, wakeup))
19876                                 goto free_msg;
19877
19878                 nla_nest_end(msg, reasons);
19879         }
19880
19881         genlmsg_end(msg, hdr);
19882
19883         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19884                                 NL80211_MCGRP_MLME, gfp);
19885         return;
19886
19887  free_msg:
19888         nlmsg_free(msg);
19889 }
19890 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19891 #endif
19892
19893 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19894                                 enum nl80211_tdls_operation oper,
19895                                 u16 reason_code, gfp_t gfp)
19896 {
19897         struct wireless_dev *wdev = dev->ieee80211_ptr;
19898         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19899         struct sk_buff *msg;
19900         void *hdr;
19901
19902         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19903                                          reason_code);
19904
19905         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19906         if (!msg)
19907                 return;
19908
19909         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19910         if (!hdr) {
19911                 nlmsg_free(msg);
19912                 return;
19913         }
19914
19915         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19916             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19917             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19918             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19919             (reason_code > 0 &&
19920              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19921                 goto nla_put_failure;
19922
19923         genlmsg_end(msg, hdr);
19924
19925         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19926                                 NL80211_MCGRP_MLME, gfp);
19927         return;
19928
19929  nla_put_failure:
19930         nlmsg_free(msg);
19931 }
19932 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19933
19934 static int nl80211_netlink_notify(struct notifier_block * nb,
19935                                   unsigned long state,
19936                                   void *_notify)
19937 {
19938         struct netlink_notify *notify = _notify;
19939         struct cfg80211_registered_device *rdev;
19940         struct wireless_dev *wdev;
19941         struct cfg80211_beacon_registration *reg, *tmp;
19942
19943         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19944                 return NOTIFY_DONE;
19945
19946         rcu_read_lock();
19947
19948         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19949                 struct cfg80211_sched_scan_request *sched_scan_req;
19950
19951                 list_for_each_entry_rcu(sched_scan_req,
19952                                         &rdev->sched_scan_req_list,
19953                                         list) {
19954                         if (sched_scan_req->owner_nlportid == notify->portid) {
19955                                 sched_scan_req->nl_owner_dead = true;
19956                                 wiphy_work_queue(&rdev->wiphy,
19957                                                  &rdev->sched_scan_stop_wk);
19958                         }
19959                 }
19960
19961                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19962                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19963
19964                         if (wdev->owner_nlportid == notify->portid) {
19965                                 wdev->nl_owner_dead = true;
19966                                 schedule_work(&rdev->destroy_work);
19967                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19968                                 schedule_work(&wdev->disconnect_wk);
19969                         }
19970
19971                         cfg80211_release_pmsr(wdev, notify->portid);
19972                 }
19973
19974                 spin_lock_bh(&rdev->beacon_registrations_lock);
19975                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19976                                          list) {
19977                         if (reg->nlportid == notify->portid) {
19978                                 list_del(&reg->list);
19979                                 kfree(reg);
19980                                 break;
19981                         }
19982                 }
19983                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19984         }
19985
19986         rcu_read_unlock();
19987
19988         /*
19989          * It is possible that the user space process that is controlling the
19990          * indoor setting disappeared, so notify the regulatory core.
19991          */
19992         regulatory_netlink_notify(notify->portid);
19993         return NOTIFY_OK;
19994 }
19995
19996 static struct notifier_block nl80211_netlink_notifier = {
19997         .notifier_call = nl80211_netlink_notify,
19998 };
19999
20000 void cfg80211_ft_event(struct net_device *netdev,
20001                        struct cfg80211_ft_event_params *ft_event)
20002 {
20003         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20004         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20005         struct sk_buff *msg;
20006         void *hdr;
20007
20008         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
20009
20010         if (!ft_event->target_ap)
20011                 return;
20012
20013         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
20014                         GFP_KERNEL);
20015         if (!msg)
20016                 return;
20017
20018         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
20019         if (!hdr)
20020                 goto out;
20021
20022         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20023             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20024             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20025                 goto out;
20026
20027         if (ft_event->ies &&
20028             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20029                 goto out;
20030         if (ft_event->ric_ies &&
20031             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20032                     ft_event->ric_ies))
20033                 goto out;
20034
20035         genlmsg_end(msg, hdr);
20036
20037         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20038                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20039         return;
20040  out:
20041         nlmsg_free(msg);
20042 }
20043 EXPORT_SYMBOL(cfg80211_ft_event);
20044
20045 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20046 {
20047         struct cfg80211_registered_device *rdev;
20048         struct sk_buff *msg;
20049         void *hdr;
20050         u32 nlportid;
20051
20052         rdev = wiphy_to_rdev(wdev->wiphy);
20053         if (!rdev->crit_proto_nlportid)
20054                 return;
20055
20056         nlportid = rdev->crit_proto_nlportid;
20057         rdev->crit_proto_nlportid = 0;
20058
20059         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20060         if (!msg)
20061                 return;
20062
20063         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20064         if (!hdr)
20065                 goto nla_put_failure;
20066
20067         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20068             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20069                               NL80211_ATTR_PAD))
20070                 goto nla_put_failure;
20071
20072         genlmsg_end(msg, hdr);
20073
20074         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20075         return;
20076
20077  nla_put_failure:
20078         nlmsg_free(msg);
20079 }
20080 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20081
20082 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20083 {
20084         struct wiphy *wiphy = wdev->wiphy;
20085         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20086         struct sk_buff *msg;
20087         void *hdr;
20088
20089         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20090         if (!msg)
20091                 return;
20092
20093         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20094         if (!hdr)
20095                 goto out;
20096
20097         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20098             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20099             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20100                               NL80211_ATTR_PAD) ||
20101             (wdev->valid_links &&
20102              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20103                 goto out;
20104
20105         genlmsg_end(msg, hdr);
20106
20107         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20108                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20109         return;
20110  out:
20111         nlmsg_free(msg);
20112 }
20113
20114 int cfg80211_external_auth_request(struct net_device *dev,
20115                                    struct cfg80211_external_auth_params *params,
20116                                    gfp_t gfp)
20117 {
20118         struct wireless_dev *wdev = dev->ieee80211_ptr;
20119         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20120         struct sk_buff *msg;
20121         void *hdr;
20122
20123         if (!wdev->conn_owner_nlportid)
20124                 return -EINVAL;
20125
20126         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20127         if (!msg)
20128                 return -ENOMEM;
20129
20130         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20131         if (!hdr)
20132                 goto nla_put_failure;
20133
20134         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20135             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20136             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20137             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20138                         params->action) ||
20139             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20140             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20141                     params->ssid.ssid) ||
20142             (!is_zero_ether_addr(params->mld_addr) &&
20143              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20144                 goto nla_put_failure;
20145
20146         genlmsg_end(msg, hdr);
20147         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20148                         wdev->conn_owner_nlportid);
20149         return 0;
20150
20151  nla_put_failure:
20152         nlmsg_free(msg);
20153         return -ENOBUFS;
20154 }
20155 EXPORT_SYMBOL(cfg80211_external_auth_request);
20156
20157 void cfg80211_update_owe_info_event(struct net_device *netdev,
20158                                     struct cfg80211_update_owe_info *owe_info,
20159                                     gfp_t gfp)
20160 {
20161         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20162         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20163         struct sk_buff *msg;
20164         void *hdr;
20165
20166         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20167
20168         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20169         if (!msg)
20170                 return;
20171
20172         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20173         if (!hdr)
20174                 goto nla_put_failure;
20175
20176         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20177             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20178             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20179                 goto nla_put_failure;
20180
20181         if (!owe_info->ie_len ||
20182             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20183                 goto nla_put_failure;
20184
20185         if (owe_info->assoc_link_id != -1) {
20186                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20187                                owe_info->assoc_link_id))
20188                         goto nla_put_failure;
20189
20190                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20191                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20192                             owe_info->peer_mld_addr))
20193                         goto nla_put_failure;
20194         }
20195
20196         genlmsg_end(msg, hdr);
20197
20198         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20199                                 NL80211_MCGRP_MLME, gfp);
20200         return;
20201
20202 nla_put_failure:
20203         genlmsg_cancel(msg, hdr);
20204         nlmsg_free(msg);
20205 }
20206 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20207
20208 /* initialisation/exit functions */
20209
20210 int __init nl80211_init(void)
20211 {
20212         int err;
20213
20214         err = genl_register_family(&nl80211_fam);
20215         if (err)
20216                 return err;
20217
20218         err = netlink_register_notifier(&nl80211_netlink_notifier);
20219         if (err)
20220                 goto err_out;
20221
20222         return 0;
20223  err_out:
20224         genl_unregister_family(&nl80211_fam);
20225         return err;
20226 }
20227
20228 void nl80211_exit(void)
20229 {
20230         netlink_unregister_notifier(&nl80211_netlink_notifier);
20231         genl_unregister_family(&nl80211_fam);
20232 }