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 };
 327
 328 static const struct nla_policy
 329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 330         [NL80211_PMSR_TYPE_FTM] =
 331                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 336         [NL80211_PMSR_REQ_ATTR_DATA] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 338         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 344         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 345         [NL80211_PMSR_PEER_ATTR_REQ] =
 346                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 347         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 348 };
 349
 350 static const struct nla_policy
 351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 352         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 353         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_PEERS] =
 357                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 358 };
 359
 360 static const struct nla_policy
 361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 362         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 363                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 364         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 365                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 366         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 367                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 368         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 369                 NLA_POLICY_EXACT_LEN(8),
 370         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 371                 NLA_POLICY_EXACT_LEN(8),
 372         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 373 };
 374
 375 static const struct nla_policy
 376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 377         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 378         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 379         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 380 };
 381
 382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 383         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 384                                     .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 386                                 .len = NL80211_MAX_SUPP_HT_RATES },
 387         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 388         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 389         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 390         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 391                                                    NL80211_RATE_INFO_HE_GI_0_8,
 392                                                    NL80211_RATE_INFO_HE_GI_3_2),
 393         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 394                                                    NL80211_RATE_INFO_HE_1XLTF,
 395                                                    NL80211_RATE_INFO_HE_4XLTF),
 396 };
 397
 398 static const struct nla_policy
 399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 400         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 401         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 403         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 404         [NL80211_TID_CONFIG_ATTR_NOACK] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 406         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 409                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 410         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 411                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 412         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 413                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 414         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 415                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 416         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 417                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 422         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 425                         NLA_POLICY_RANGE(NLA_BINARY,
 426                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 427                                          IEEE80211_MAX_DATA_LEN),
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 432         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 434                                                        .len = IEEE80211_MAX_DATA_LEN }
 435 };
 436
 437 static const struct nla_policy
 438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 439         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 440         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 441 };
 442
 443 static const struct nla_policy
 444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 445         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 446         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 451         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 453                                                 NLA_POLICY_MIN(NLA_U8, 1),
 454         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 455         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 456         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 457 };
 458
 459 static const struct nla_policy
 460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 461         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 462         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 463 };
 464
 465 static struct netlink_range_validation nl80211_punct_bitmap_range = {
 466         .min = 0,
 467         .max = 0xffff,
 468 };
 469
 470 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 471         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 472         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 473         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 474                                       .len = 20-1 },
 475         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 476
 477         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 478         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 479         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 480                                                 NL80211_EDMG_CHANNELS_MIN,
 481                                                 NL80211_EDMG_CHANNELS_MAX),
 482         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 483                                                 NL80211_EDMG_BW_CONFIG_MIN,
 484                                                 NL80211_EDMG_BW_CONFIG_MAX),
 485
 486         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 487         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 488         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 489         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 490
 491         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 492         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 493         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 494         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 495         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 496         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 497
 498         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 499         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 500         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 501
 502         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 503         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 504
 505         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 506         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 507                                     .len = WLAN_MAX_KEY_LEN },
 508         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 509         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 510         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 511         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 512         [NL80211_ATTR_KEY_TYPE] =
 513                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 514
 515         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 516         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 517         [NL80211_ATTR_BEACON_HEAD] =
 518                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 519                                        IEEE80211_MAX_DATA_LEN),
 520         [NL80211_ATTR_BEACON_TAIL] =
 521                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 522                                        IEEE80211_MAX_DATA_LEN),
 523         [NL80211_ATTR_STA_AID] =
 524                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 525         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 526         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 527         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 528                                                .len = NL80211_MAX_SUPP_RATES },
 529         [NL80211_ATTR_STA_PLINK_ACTION] =
 530                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 531         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 532                 NLA_POLICY_RANGE(NLA_U8,
 533                                  NL80211_TX_POWER_AUTOMATIC,
 534                                  NL80211_TX_POWER_FIXED),
 535         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 536         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 537         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 538         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 539                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 540         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 541
 542         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 543         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 544         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 545
 546         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 547         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 548         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 549         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 550                                            .len = NL80211_MAX_SUPP_RATES },
 551         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 552
 553         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 554         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 555
 556         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 557
 558         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 559         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 560                                                    validate_ie_attr,
 561                                                    IEEE80211_MAX_DATA_LEN),
 562         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 563         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 564
 565         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 566                                 .len = IEEE80211_MAX_SSID_LEN },
 567         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 568         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 569         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 570         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 572                                                   NL80211_MFP_NO,
 573                                                   NL80211_MFP_OPTIONAL),
 574         [NL80211_ATTR_STA_FLAGS2] =
 575                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 576         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 577         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 578         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 579         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 582         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 583         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 584         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 585         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 586         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 587         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 588         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 589         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 590         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 591                                  .len = IEEE80211_MAX_DATA_LEN },
 592         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 593         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 594                                                    NL80211_PS_DISABLED,
 595                                                    NL80211_PS_ENABLED),
 596         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 597         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 599         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 600         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 601         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 602         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 603         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 604         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 605         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 606         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 607         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 608         [NL80211_ATTR_STA_PLINK_STATE] =
 609                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 610         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 611         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 612         [NL80211_ATTR_MESH_PEER_AID] =
 613                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 614         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 615         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 616         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 617         [NL80211_ATTR_HIDDEN_SSID] =
 618                 NLA_POLICY_RANGE(NLA_U32,
 619                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 620                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 621         [NL80211_ATTR_IE_PROBE_RESP] =
 622                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 623                                        IEEE80211_MAX_DATA_LEN),
 624         [NL80211_ATTR_IE_ASSOC_RESP] =
 625                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 626                                        IEEE80211_MAX_DATA_LEN),
 627         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 628         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 629         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 630         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 632         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 633         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 634         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 635         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 638         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 639                                       .len = IEEE80211_MAX_DATA_LEN },
 640         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 641         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 642         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 643                 .len = NL80211_HT_CAPABILITY_LEN
 644         },
 645         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 646         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 647         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 648         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 649         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 650
 651         /* need to include at least Auth Transaction and Status Code */
 652         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 653
 654         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 655         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 656         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 657         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 658         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 659                 NLA_POLICY_RANGE(NLA_U32,
 660                                  NL80211_MESH_POWER_UNKNOWN + 1,
 661                                  NL80211_MESH_POWER_MAX),
 662         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 663         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 664         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 665         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 666         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 667         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 668         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 669                 .len = NL80211_VHT_CAPABILITY_LEN,
 670         },
 671         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 672         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 673                                   .len = IEEE80211_MAX_DATA_LEN },
 674         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 675         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 676                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 677         [NL80211_ATTR_PEER_AID] =
 678                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 679         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 680         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 681         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 682         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 683         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 684         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 685         /*
 686          * The value of the Length field of the Supported Operating
 687          * Classes element is between 2 and 253.
 688          */
 689         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 690                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 691         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 692         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 693         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 694         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 695         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 696         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 697                                                   IEEE80211_QOS_MAP_LEN_MIN,
 698                                                   IEEE80211_QOS_MAP_LEN_MAX),
 699         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 700         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 701         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 702         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 703         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 704         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 705         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 706         [NL80211_ATTR_USER_PRIO] =
 707                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 708         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 709         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 710         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 711         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 712         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 713         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 714         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 715         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 716         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 718         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 719                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 720         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 721                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 722         },
 723         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 724         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 725         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 726         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 727         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 728                                     .len = FILS_MAX_KEK_LEN },
 729         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 730         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 731         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 732         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 733         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 734                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 735         },
 736         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 737         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 738                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 739         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 740                                           .len = FILS_ERP_MAX_REALM_LEN },
 741         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 742         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 743                                         .len = FILS_ERP_MAX_RRK_LEN },
 744         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 745         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 746         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 747         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 748         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 749
 750         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 751         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 752         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 753         [NL80211_ATTR_HE_CAPABILITY] =
 754                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 755                                        NL80211_HE_MAX_CAPABILITY_LEN),
 756         [NL80211_ATTR_FTM_RESPONDER] =
 757                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 758         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 759         [NL80211_ATTR_PEER_MEASUREMENTS] =
 760                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 761         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 762         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 763                                         .len = SAE_PASSWORD_MAX_LEN },
 764         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 765         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 766         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 767         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 768         [NL80211_ATTR_TID_CONFIG] =
 769                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 770         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 771         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 772         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 773         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 774         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 775         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 776         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 777                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 778         [NL80211_ATTR_FILS_DISCOVERY] =
 779                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 780         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 781                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 782         [NL80211_ATTR_S1G_CAPABILITY] =
 783                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 784         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 785                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 786         [NL80211_ATTR_SAE_PWE] =
 787                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 788                                  NL80211_SAE_PWE_BOTH),
 789         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 790         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 791         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 792         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 793         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 794         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 795         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 796         [NL80211_ATTR_MBSSID_CONFIG] =
 797                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 798         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 799         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 800         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 801         [NL80211_ATTR_EHT_CAPABILITY] =
 802                 NLA_POLICY_RANGE(NLA_BINARY,
 803                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 804                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 805         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 806         [NL80211_ATTR_MLO_LINKS] =
 807                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 808         [NL80211_ATTR_MLO_LINK_ID] =
 809                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 810         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 811         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 812         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 813         [NL80211_ATTR_PUNCT_BITMAP] =
 814                 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 815
 816         [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
 817         [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
 818         [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
 819         [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
 820 };
 821
 822 /* policy for the key attributes */
 823 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 824         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 825         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 826         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 827         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 828         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 829         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 830         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 831         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 832         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 833 };
 834
 835 /* policy for the key default flags */
 836 static const struct nla_policy
 837 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 838         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 839         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 840 };
 841
 842 #ifdef CONFIG_PM
 843 /* policy for WoWLAN attributes */
 844 static const struct nla_policy
 845 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 846         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 847         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 848         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 849         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 850         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 851         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 852         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 853         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 854         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 855         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 856 };
 857
 858 static const struct nla_policy
 859 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 860         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 861         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 862         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 863         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 864         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 865         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 866         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 867                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 868         },
 869         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 870                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 871         },
 872         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 873         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 874         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 875 };
 876 #endif /* CONFIG_PM */
 877
 878 /* policy for coalesce rule attributes */
 879 static const struct nla_policy
 880 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 881         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 882         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 883                 NLA_POLICY_RANGE(NLA_U32,
 884                                  NL80211_COALESCE_CONDITION_MATCH,
 885                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 886         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 887 };
 888
 889 /* policy for GTK rekey offload attributes */
 890 static const struct nla_policy
 891 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 892         [NL80211_REKEY_DATA_KEK] = {
 893                 .type = NLA_BINARY,
 894                 .len = NL80211_KEK_EXT_LEN
 895         },
 896         [NL80211_REKEY_DATA_KCK] = {
 897                 .type = NLA_BINARY,
 898                 .len = NL80211_KCK_EXT_LEN_32
 899         },
 900         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 901         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 902 };
 903
 904 static const struct nla_policy
 905 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 906         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 907         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 908         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 909         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 910         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 911 };
 912
 913 static const struct nla_policy
 914 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 915         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 916                                                  .len = IEEE80211_MAX_SSID_LEN },
 917         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 918         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 919         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 920                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 921 };
 922
 923 static const struct nla_policy
 924 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 925         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 926         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 927 };
 928
 929 static const struct nla_policy
 930 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 931         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 932         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 933         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 934                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 935         },
 936 };
 937
 938 /* policy for NAN function attributes */
 939 static const struct nla_policy
 940 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 941         [NL80211_NAN_FUNC_TYPE] =
 942                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 943         [NL80211_NAN_FUNC_SERVICE_ID] = {
 944                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 945         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 946         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 947         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 948         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 949         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 950         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 951         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 952         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 953         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 954                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 955         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 956         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 957         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 958         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 959         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 960 };
 961
 962 /* policy for Service Response Filter attributes */
 963 static const struct nla_policy
 964 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 965         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 966         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 967                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 968         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 969         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 970 };
 971
 972 /* policy for packet pattern attributes */
 973 static const struct nla_policy
 974 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 975         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 976         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 977         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 978 };
 979
 980 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 981                                      struct cfg80211_registered_device **rdev,
 982                                      struct wireless_dev **wdev,
 983                                      struct nlattr **attrbuf)
 984 {
 985         int err;
 986
 987         if (!cb->args[0]) {
 988                 struct nlattr **attrbuf_free = NULL;
 989
 990                 if (!attrbuf) {
 991                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 992                                           GFP_KERNEL);
 993                         if (!attrbuf)
 994                                 return -ENOMEM;
 995                         attrbuf_free = attrbuf;
 996                 }
 997
 998                 err = nlmsg_parse_deprecated(cb->nlh,
 999                                              GENL_HDRLEN + nl80211_fam.hdrsize,
1000                                              attrbuf, nl80211_fam.maxattr,
1001                                              nl80211_policy, NULL);
1002                 if (err) {
1003                         kfree(attrbuf_free);
1004                         return err;
1005                 }
1006
1007                 rtnl_lock();
1008                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1009                                                    attrbuf);
1010                 kfree(attrbuf_free);
1011                 if (IS_ERR(*wdev)) {
1012                         rtnl_unlock();
1013                         return PTR_ERR(*wdev);
1014                 }
1015                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1016                 mutex_lock(&(*rdev)->wiphy.mtx);
1017                 rtnl_unlock();
1018                 /* 0 is the first index - add 1 to parse only once */
1019                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1020                 cb->args[1] = (*wdev)->identifier;
1021         } else {
1022                 /* subtract the 1 again here */
1023                 struct wiphy *wiphy;
1024                 struct wireless_dev *tmp;
1025
1026                 rtnl_lock();
1027                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1028                 if (!wiphy) {
1029                         rtnl_unlock();
1030                         return -ENODEV;
1031                 }
1032                 *rdev = wiphy_to_rdev(wiphy);
1033                 *wdev = NULL;
1034
1035                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1036                         if (tmp->identifier == cb->args[1]) {
1037                                 *wdev = tmp;
1038                                 break;
1039                         }
1040                 }
1041
1042                 if (!*wdev) {
1043                         rtnl_unlock();
1044                         return -ENODEV;
1045                 }
1046                 mutex_lock(&(*rdev)->wiphy.mtx);
1047                 rtnl_unlock();
1048         }
1049
1050         return 0;
1051 }
1052
1053 /* message building helper */
1054 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1055                      int flags, u8 cmd)
1056 {
1057         /* since there is no private header just add the generic one */
1058         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1059 }
1060
1061 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1062                                      const struct ieee80211_reg_rule *rule)
1063 {
1064         int j;
1065         struct nlattr *nl_wmm_rules =
1066                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1067
1068         if (!nl_wmm_rules)
1069                 goto nla_put_failure;
1070
1071         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1072                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1073
1074                 if (!nl_wmm_rule)
1075                         goto nla_put_failure;
1076
1077                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1078                                 rule->wmm_rule.client[j].cw_min) ||
1079                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1080                                 rule->wmm_rule.client[j].cw_max) ||
1081                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1082                                rule->wmm_rule.client[j].aifsn) ||
1083                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1084                                 rule->wmm_rule.client[j].cot))
1085                         goto nla_put_failure;
1086
1087                 nla_nest_end(msg, nl_wmm_rule);
1088         }
1089         nla_nest_end(msg, nl_wmm_rules);
1090
1091         return 0;
1092
1093 nla_put_failure:
1094         return -ENOBUFS;
1095 }
1096
1097 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1098                                    struct ieee80211_channel *chan,
1099                                    bool large)
1100 {
1101         /* Some channels must be completely excluded from the
1102          * list to protect old user-space tools from breaking
1103          */
1104         if (!large && chan->flags &
1105             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1106                 return 0;
1107         if (!large && chan->freq_offset)
1108                 return 0;
1109
1110         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1111                         chan->center_freq))
1112                 goto nla_put_failure;
1113
1114         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1115                 goto nla_put_failure;
1116
1117         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1118             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1119                 goto nla_put_failure;
1120         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1121                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1122                         goto nla_put_failure;
1123                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1124                         goto nla_put_failure;
1125         }
1126         if (chan->flags & IEEE80211_CHAN_RADAR) {
1127                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1128                         goto nla_put_failure;
1129                 if (large) {
1130                         u32 time;
1131
1132                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1133
1134                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1135                                         chan->dfs_state))
1136                                 goto nla_put_failure;
1137                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1138                                         time))
1139                                 goto nla_put_failure;
1140                         if (nla_put_u32(msg,
1141                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1142                                         chan->dfs_cac_ms))
1143                                 goto nla_put_failure;
1144                 }
1145         }
1146
1147         if (large) {
1148                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1149                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1150                         goto nla_put_failure;
1151                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1152                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1153                         goto nla_put_failure;
1154                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1155                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1156                         goto nla_put_failure;
1157                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1158                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1159                         goto nla_put_failure;
1160                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1161                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1162                         goto nla_put_failure;
1163                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1164                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1165                         goto nla_put_failure;
1166                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1167                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1168                         goto nla_put_failure;
1169                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1170                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1171                         goto nla_put_failure;
1172                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1173                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1174                         goto nla_put_failure;
1175                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1176                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1177                         goto nla_put_failure;
1178                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1179                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1180                         goto nla_put_failure;
1181                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1182                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1183                         goto nla_put_failure;
1184                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1185                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1186                         goto nla_put_failure;
1187                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1188                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1189                         goto nla_put_failure;
1190                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1191                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1192                         goto nla_put_failure;
1193                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1194                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1195                         goto nla_put_failure;
1196         }
1197
1198         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1199                         DBM_TO_MBM(chan->max_power)))
1200                 goto nla_put_failure;
1201
1202         if (large) {
1203                 const struct ieee80211_reg_rule *rule =
1204                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1205
1206                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1207                         if (nl80211_msg_put_wmm_rules(msg, rule))
1208                                 goto nla_put_failure;
1209                 }
1210         }
1211
1212         return 0;
1213
1214  nla_put_failure:
1215         return -ENOBUFS;
1216 }
1217
1218 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1219                                   struct cfg80211_txq_stats *txqstats,
1220                                   int attrtype)
1221 {
1222         struct nlattr *txqattr;
1223
1224 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1225         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1226             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1227                 return false;                                             \
1228         } while (0)
1229
1230         txqattr = nla_nest_start_noflag(msg, attrtype);
1231         if (!txqattr)
1232                 return false;
1233
1234         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1235         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1236         PUT_TXQVAL_U32(FLOWS, flows);
1237         PUT_TXQVAL_U32(DROPS, drops);
1238         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1239         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1240         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1241         PUT_TXQVAL_U32(COLLISIONS, collisions);
1242         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1243         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1244         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1245         nla_nest_end(msg, txqattr);
1246
1247 #undef PUT_TXQVAL_U32
1248         return true;
1249 }
1250
1251 /* netlink command implementations */
1252
1253 /**
1254  * nl80211_link_id - return link ID
1255  * @attrs: attributes to look at
1256  *
1257  * Returns: the link ID or 0 if not given
1258  *
1259  * Note this function doesn't do any validation of the link
1260  * ID validity wrt. links that were actually added, so it must
1261  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1262  * or if additional validation is done.
1263  */
1264 static unsigned int nl80211_link_id(struct nlattr **attrs)
1265 {
1266         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1267
1268         if (!linkid)
1269                 return 0;
1270
1271         return nla_get_u8(linkid);
1272 }
1273
1274 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1275 {
1276         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1277
1278         if (!linkid)
1279                 return -1;
1280
1281         return nla_get_u8(linkid);
1282 }
1283
1284 struct key_parse {
1285         struct key_params p;
1286         int idx;
1287         int type;
1288         bool def, defmgmt, defbeacon;
1289         bool def_uni, def_multi;
1290 };
1291
1292 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1293                                  struct key_parse *k)
1294 {
1295         struct nlattr *tb[NL80211_KEY_MAX + 1];
1296         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1297                                               nl80211_key_policy,
1298                                               info->extack);
1299         if (err)
1300                 return err;
1301
1302         k->def = !!tb[NL80211_KEY_DEFAULT];
1303         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1304         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1305
1306         if (k->def) {
1307                 k->def_uni = true;
1308                 k->def_multi = true;
1309         }
1310         if (k->defmgmt || k->defbeacon)
1311                 k->def_multi = true;
1312
1313         if (tb[NL80211_KEY_IDX])
1314                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1315
1316         if (tb[NL80211_KEY_DATA]) {
1317                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1318                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1319         }
1320
1321         if (tb[NL80211_KEY_SEQ]) {
1322                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1323                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1324         }
1325
1326         if (tb[NL80211_KEY_CIPHER])
1327                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1328
1329         if (tb[NL80211_KEY_TYPE])
1330                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1331
1332         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1333                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1334
1335                 err = nla_parse_nested_deprecated(kdt,
1336                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1337                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1338                                                   nl80211_key_default_policy,
1339                                                   info->extack);
1340                 if (err)
1341                         return err;
1342
1343                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1344                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1345         }
1346
1347         if (tb[NL80211_KEY_MODE])
1348                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1349
1350         return 0;
1351 }
1352
1353 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1354 {
1355         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1356                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1357                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1358         }
1359
1360         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1361                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1362                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1363         }
1364
1365         if (info->attrs[NL80211_ATTR_KEY_IDX])
1366                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1367
1368         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1369                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1370
1371         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1372         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1373
1374         if (k->def) {
1375                 k->def_uni = true;
1376                 k->def_multi = true;
1377         }
1378         if (k->defmgmt)
1379                 k->def_multi = true;
1380
1381         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1382                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1383
1384         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1385                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1386                 int err = nla_parse_nested_deprecated(kdt,
1387                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1388                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1389                                                       nl80211_key_default_policy,
1390                                                       info->extack);
1391                 if (err)
1392                         return err;
1393
1394                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1395                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1396         }
1397
1398         return 0;
1399 }
1400
1401 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1402 {
1403         int err;
1404
1405         memset(k, 0, sizeof(*k));
1406         k->idx = -1;
1407         k->type = -1;
1408
1409         if (info->attrs[NL80211_ATTR_KEY])
1410                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1411         else
1412                 err = nl80211_parse_key_old(info, k);
1413
1414         if (err)
1415                 return err;
1416
1417         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1418             (k->defbeacon ? 1 : 0) > 1) {
1419                 GENL_SET_ERR_MSG(info,
1420                                  "key with multiple default flags is invalid");
1421                 return -EINVAL;
1422         }
1423
1424         if (k->defmgmt || k->defbeacon) {
1425                 if (k->def_uni || !k->def_multi) {
1426                         GENL_SET_ERR_MSG(info,
1427                                          "defmgmt/defbeacon key must be mcast");
1428                         return -EINVAL;
1429                 }
1430         }
1431
1432         if (k->idx != -1) {
1433                 if (k->defmgmt) {
1434                         if (k->idx < 4 || k->idx > 5) {
1435                                 GENL_SET_ERR_MSG(info,
1436                                                  "defmgmt key idx not 4 or 5");
1437                                 return -EINVAL;
1438                         }
1439                 } else if (k->defbeacon) {
1440                         if (k->idx < 6 || k->idx > 7) {
1441                                 GENL_SET_ERR_MSG(info,
1442                                                  "defbeacon key idx not 6 or 7");
1443                                 return -EINVAL;
1444                         }
1445                 } else if (k->def) {
1446                         if (k->idx < 0 || k->idx > 3) {
1447                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1448                                 return -EINVAL;
1449                         }
1450                 } else {
1451                         if (k->idx < 0 || k->idx > 7) {
1452                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1453                                 return -EINVAL;
1454                         }
1455                 }
1456         }
1457
1458         return 0;
1459 }
1460
1461 static struct cfg80211_cached_keys *
1462 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1463                        struct genl_info *info, bool *no_ht)
1464 {
1465         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1466         struct key_parse parse;
1467         struct nlattr *key;
1468         struct cfg80211_cached_keys *result;
1469         int rem, err, def = 0;
1470         bool have_key = false;
1471
1472         nla_for_each_nested(key, keys, rem) {
1473                 have_key = true;
1474                 break;
1475         }
1476
1477         if (!have_key)
1478                 return NULL;
1479
1480         result = kzalloc(sizeof(*result), GFP_KERNEL);
1481         if (!result)
1482                 return ERR_PTR(-ENOMEM);
1483
1484         result->def = -1;
1485
1486         nla_for_each_nested(key, keys, rem) {
1487                 memset(&parse, 0, sizeof(parse));
1488                 parse.idx = -1;
1489
1490                 err = nl80211_parse_key_new(info, key, &parse);
1491                 if (err)
1492                         goto error;
1493                 err = -EINVAL;
1494                 if (!parse.p.key)
1495                         goto error;
1496                 if (parse.idx < 0 || parse.idx > 3) {
1497                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1498                         goto error;
1499                 }
1500                 if (parse.def) {
1501                         if (def) {
1502                                 GENL_SET_ERR_MSG(info,
1503                                                  "only one key can be default");
1504                                 goto error;
1505                         }
1506                         def = 1;
1507                         result->def = parse.idx;
1508                         if (!parse.def_uni || !parse.def_multi)
1509                                 goto error;
1510                 } else if (parse.defmgmt)
1511                         goto error;
1512                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1513                                                      parse.idx, false, NULL);
1514                 if (err)
1515                         goto error;
1516                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1517                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1518                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1519                         err = -EINVAL;
1520                         goto error;
1521                 }
1522                 result->params[parse.idx].cipher = parse.p.cipher;
1523                 result->params[parse.idx].key_len = parse.p.key_len;
1524                 result->params[parse.idx].key = result->data[parse.idx];
1525                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1526
1527                 /* must be WEP key if we got here */
1528                 if (no_ht)
1529                         *no_ht = true;
1530         }
1531
1532         if (result->def < 0) {
1533                 err = -EINVAL;
1534                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1535                 goto error;
1536         }
1537
1538         return result;
1539  error:
1540         kfree(result);
1541         return ERR_PTR(err);
1542 }
1543
1544 static int nl80211_key_allowed(struct wireless_dev *wdev)
1545 {
1546         ASSERT_WDEV_LOCK(wdev);
1547
1548         switch (wdev->iftype) {
1549         case NL80211_IFTYPE_AP:
1550         case NL80211_IFTYPE_AP_VLAN:
1551         case NL80211_IFTYPE_P2P_GO:
1552         case NL80211_IFTYPE_MESH_POINT:
1553                 break;
1554         case NL80211_IFTYPE_ADHOC:
1555                 if (wdev->u.ibss.current_bss)
1556                         return 0;
1557                 return -ENOLINK;
1558         case NL80211_IFTYPE_STATION:
1559         case NL80211_IFTYPE_P2P_CLIENT:
1560                 if (wdev->connected)
1561                         return 0;
1562                 return -ENOLINK;
1563         case NL80211_IFTYPE_NAN:
1564                 if (wiphy_ext_feature_isset(wdev->wiphy,
1565                                             NL80211_EXT_FEATURE_SECURE_NAN))
1566                         return 0;
1567                 return -EINVAL;
1568         case NL80211_IFTYPE_UNSPECIFIED:
1569         case NL80211_IFTYPE_OCB:
1570         case NL80211_IFTYPE_MONITOR:
1571         case NL80211_IFTYPE_P2P_DEVICE:
1572         case NL80211_IFTYPE_WDS:
1573         case NUM_NL80211_IFTYPES:
1574                 return -EINVAL;
1575         }
1576
1577         return 0;
1578 }
1579
1580 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1581                                                         u32 freq)
1582 {
1583         struct ieee80211_channel *chan;
1584
1585         chan = ieee80211_get_channel_khz(wiphy, freq);
1586         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1587                 return NULL;
1588         return chan;
1589 }
1590
1591 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1592 {
1593         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1594         int i;
1595
1596         if (!nl_modes)
1597                 goto nla_put_failure;
1598
1599         i = 0;
1600         while (ifmodes) {
1601                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1602                         goto nla_put_failure;
1603                 ifmodes >>= 1;
1604                 i++;
1605         }
1606
1607         nla_nest_end(msg, nl_modes);
1608         return 0;
1609
1610 nla_put_failure:
1611         return -ENOBUFS;
1612 }
1613
1614 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1615                                           struct sk_buff *msg,
1616                                           bool large)
1617 {
1618         struct nlattr *nl_combis;
1619         int i, j;
1620
1621         nl_combis = nla_nest_start_noflag(msg,
1622                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1623         if (!nl_combis)
1624                 goto nla_put_failure;
1625
1626         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1627                 const struct ieee80211_iface_combination *c;
1628                 struct nlattr *nl_combi, *nl_limits;
1629
1630                 c = &wiphy->iface_combinations[i];
1631
1632                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1633                 if (!nl_combi)
1634                         goto nla_put_failure;
1635
1636                 nl_limits = nla_nest_start_noflag(msg,
1637                                                   NL80211_IFACE_COMB_LIMITS);
1638                 if (!nl_limits)
1639                         goto nla_put_failure;
1640
1641                 for (j = 0; j < c->n_limits; j++) {
1642                         struct nlattr *nl_limit;
1643
1644                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1645                         if (!nl_limit)
1646                                 goto nla_put_failure;
1647                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1648                                         c->limits[j].max))
1649                                 goto nla_put_failure;
1650                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1651                                                 c->limits[j].types))
1652                                 goto nla_put_failure;
1653                         nla_nest_end(msg, nl_limit);
1654                 }
1655
1656                 nla_nest_end(msg, nl_limits);
1657
1658                 if (c->beacon_int_infra_match &&
1659                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1660                         goto nla_put_failure;
1661                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1662                                 c->num_different_channels) ||
1663                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1664                                 c->max_interfaces))
1665                         goto nla_put_failure;
1666                 if (large &&
1667                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1668                                 c->radar_detect_widths) ||
1669                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1670                                 c->radar_detect_regions)))
1671                         goto nla_put_failure;
1672                 if (c->beacon_int_min_gcd &&
1673                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1674                                 c->beacon_int_min_gcd))
1675                         goto nla_put_failure;
1676
1677                 nla_nest_end(msg, nl_combi);
1678         }
1679
1680         nla_nest_end(msg, nl_combis);
1681
1682         return 0;
1683 nla_put_failure:
1684         return -ENOBUFS;
1685 }
1686
1687 #ifdef CONFIG_PM
1688 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1689                                         struct sk_buff *msg)
1690 {
1691         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1692         struct nlattr *nl_tcp;
1693
1694         if (!tcp)
1695                 return 0;
1696
1697         nl_tcp = nla_nest_start_noflag(msg,
1698                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1699         if (!nl_tcp)
1700                 return -ENOBUFS;
1701
1702         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1703                         tcp->data_payload_max))
1704                 return -ENOBUFS;
1705
1706         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1707                         tcp->data_payload_max))
1708                 return -ENOBUFS;
1709
1710         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1711                 return -ENOBUFS;
1712
1713         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1714                                 sizeof(*tcp->tok), tcp->tok))
1715                 return -ENOBUFS;
1716
1717         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1718                         tcp->data_interval_max))
1719                 return -ENOBUFS;
1720
1721         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1722                         tcp->wake_payload_max))
1723                 return -ENOBUFS;
1724
1725         nla_nest_end(msg, nl_tcp);
1726         return 0;
1727 }
1728
1729 static int nl80211_send_wowlan(struct sk_buff *msg,
1730                                struct cfg80211_registered_device *rdev,
1731                                bool large)
1732 {
1733         struct nlattr *nl_wowlan;
1734
1735         if (!rdev->wiphy.wowlan)
1736                 return 0;
1737
1738         nl_wowlan = nla_nest_start_noflag(msg,
1739                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1740         if (!nl_wowlan)
1741                 return -ENOBUFS;
1742
1743         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1744              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1745             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1746              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1747             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1748              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1749             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1750              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1751             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1752              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1753             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1754              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1755             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1756              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1757             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1758              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1759                 return -ENOBUFS;
1760
1761         if (rdev->wiphy.wowlan->n_patterns) {
1762                 struct nl80211_pattern_support pat = {
1763                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1764                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1765                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1766                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1767                 };
1768
1769                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1770                             sizeof(pat), &pat))
1771                         return -ENOBUFS;
1772         }
1773
1774         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1775             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1776                         rdev->wiphy.wowlan->max_nd_match_sets))
1777                 return -ENOBUFS;
1778
1779         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1780                 return -ENOBUFS;
1781
1782         nla_nest_end(msg, nl_wowlan);
1783
1784         return 0;
1785 }
1786 #endif
1787
1788 static int nl80211_send_coalesce(struct sk_buff *msg,
1789                                  struct cfg80211_registered_device *rdev)
1790 {
1791         struct nl80211_coalesce_rule_support rule;
1792
1793         if (!rdev->wiphy.coalesce)
1794                 return 0;
1795
1796         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1797         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1798         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1799         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1800         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1801         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1802
1803         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1804                 return -ENOBUFS;
1805
1806         return 0;
1807 }
1808
1809 static int
1810 nl80211_send_iftype_data(struct sk_buff *msg,
1811                          const struct ieee80211_supported_band *sband,
1812                          const struct ieee80211_sband_iftype_data *iftdata)
1813 {
1814         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1815         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1816
1817         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1818                                 iftdata->types_mask))
1819                 return -ENOBUFS;
1820
1821         if (he_cap->has_he) {
1822                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1823                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1824                             he_cap->he_cap_elem.mac_cap_info) ||
1825                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1826                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1827                             he_cap->he_cap_elem.phy_cap_info) ||
1828                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1829                             sizeof(he_cap->he_mcs_nss_supp),
1830                             &he_cap->he_mcs_nss_supp) ||
1831                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1832                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1833                         return -ENOBUFS;
1834         }
1835
1836         if (eht_cap->has_eht && he_cap->has_he) {
1837                 u8 mcs_nss_size, ppe_thresh_size;
1838                 u16 ppe_thres_hdr;
1839                 bool is_ap;
1840
1841                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1842                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1843
1844                 mcs_nss_size =
1845                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1846                                                    &eht_cap->eht_cap_elem,
1847                                                    is_ap);
1848
1849                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1850                 ppe_thresh_size =
1851                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1852                                                eht_cap->eht_cap_elem.phy_cap_info);
1853
1854                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1855                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1856                             eht_cap->eht_cap_elem.mac_cap_info) ||
1857                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1858                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1859                             eht_cap->eht_cap_elem.phy_cap_info) ||
1860                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1861                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1862                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1863                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1864                         return -ENOBUFS;
1865         }
1866
1867         if (sband->band == NL80211_BAND_6GHZ &&
1868             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1869                     sizeof(iftdata->he_6ghz_capa),
1870                     &iftdata->he_6ghz_capa))
1871                 return -ENOBUFS;
1872
1873         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1874             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1875                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1876                 return -ENOBUFS;
1877
1878         return 0;
1879 }
1880
1881 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1882                                       struct ieee80211_supported_band *sband,
1883                                       bool large)
1884 {
1885         struct nlattr *nl_rates, *nl_rate;
1886         struct ieee80211_rate *rate;
1887         int i;
1888
1889         /* add HT info */
1890         if (sband->ht_cap.ht_supported &&
1891             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1892                      sizeof(sband->ht_cap.mcs),
1893                      &sband->ht_cap.mcs) ||
1894              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1895                          sband->ht_cap.cap) ||
1896              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1897                         sband->ht_cap.ampdu_factor) ||
1898              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1899                         sband->ht_cap.ampdu_density)))
1900                 return -ENOBUFS;
1901
1902         /* add VHT info */
1903         if (sband->vht_cap.vht_supported &&
1904             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1905                      sizeof(sband->vht_cap.vht_mcs),
1906                      &sband->vht_cap.vht_mcs) ||
1907              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1908                          sband->vht_cap.cap)))
1909                 return -ENOBUFS;
1910
1911         if (large && sband->n_iftype_data) {
1912                 struct nlattr *nl_iftype_data =
1913                         nla_nest_start_noflag(msg,
1914                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1915                 int err;
1916
1917                 if (!nl_iftype_data)
1918                         return -ENOBUFS;
1919
1920                 for (i = 0; i < sband->n_iftype_data; i++) {
1921                         struct nlattr *iftdata;
1922
1923                         iftdata = nla_nest_start_noflag(msg, i + 1);
1924                         if (!iftdata)
1925                                 return -ENOBUFS;
1926
1927                         err = nl80211_send_iftype_data(msg, sband,
1928                                                        &sband->iftype_data[i]);
1929                         if (err)
1930                                 return err;
1931
1932                         nla_nest_end(msg, iftdata);
1933                 }
1934
1935                 nla_nest_end(msg, nl_iftype_data);
1936         }
1937
1938         /* add EDMG info */
1939         if (large && sband->edmg_cap.channels &&
1940             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1941                        sband->edmg_cap.channels) ||
1942             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1943                        sband->edmg_cap.bw_config)))
1944
1945                 return -ENOBUFS;
1946
1947         /* add bitrates */
1948         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1949         if (!nl_rates)
1950                 return -ENOBUFS;
1951
1952         for (i = 0; i < sband->n_bitrates; i++) {
1953                 nl_rate = nla_nest_start_noflag(msg, i);
1954                 if (!nl_rate)
1955                         return -ENOBUFS;
1956
1957                 rate = &sband->bitrates[i];
1958                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1959                                 rate->bitrate))
1960                         return -ENOBUFS;
1961                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1962                     nla_put_flag(msg,
1963                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1964                         return -ENOBUFS;
1965
1966                 nla_nest_end(msg, nl_rate);
1967         }
1968
1969         nla_nest_end(msg, nl_rates);
1970
1971         /* S1G capabilities */
1972         if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1973             (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1974                      sizeof(sband->s1g_cap.cap),
1975                      sband->s1g_cap.cap) ||
1976              nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1977                      sizeof(sband->s1g_cap.nss_mcs),
1978                      sband->s1g_cap.nss_mcs)))
1979                 return -ENOBUFS;
1980
1981         return 0;
1982 }
1983
1984 static int
1985 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1986                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1987 {
1988         u16 stypes;
1989         struct nlattr *nl_ftypes, *nl_ifs;
1990         enum nl80211_iftype ift;
1991         int i;
1992
1993         if (!mgmt_stypes)
1994                 return 0;
1995
1996         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1997         if (!nl_ifs)
1998                 return -ENOBUFS;
1999
2000         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2001                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2002                 if (!nl_ftypes)
2003                         return -ENOBUFS;
2004                 i = 0;
2005                 stypes = mgmt_stypes[ift].tx;
2006                 while (stypes) {
2007                         if ((stypes & 1) &&
2008                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2009                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2010                                 return -ENOBUFS;
2011                         stypes >>= 1;
2012                         i++;
2013                 }
2014                 nla_nest_end(msg, nl_ftypes);
2015         }
2016
2017         nla_nest_end(msg, nl_ifs);
2018
2019         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2020         if (!nl_ifs)
2021                 return -ENOBUFS;
2022
2023         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2024                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2025                 if (!nl_ftypes)
2026                         return -ENOBUFS;
2027                 i = 0;
2028                 stypes = mgmt_stypes[ift].rx;
2029                 while (stypes) {
2030                         if ((stypes & 1) &&
2031                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2032                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2033                                 return -ENOBUFS;
2034                         stypes >>= 1;
2035                         i++;
2036                 }
2037                 nla_nest_end(msg, nl_ftypes);
2038         }
2039         nla_nest_end(msg, nl_ifs);
2040
2041         return 0;
2042 }
2043
2044 #define CMD(op, n)                                                      \
2045          do {                                                           \
2046                 if (rdev->ops->op) {                                    \
2047                         i++;                                            \
2048                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2049                                 goto nla_put_failure;                   \
2050                 }                                                       \
2051         } while (0)
2052
2053 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2054                                         struct sk_buff *msg)
2055 {
2056         int i = 0;
2057
2058         /*
2059          * do *NOT* add anything into this function, new things need to be
2060          * advertised only to new versions of userspace that can deal with
2061          * the split (and they can't possibly care about new features...
2062          */
2063         CMD(add_virtual_intf, NEW_INTERFACE);
2064         CMD(change_virtual_intf, SET_INTERFACE);
2065         CMD(add_key, NEW_KEY);
2066         CMD(start_ap, START_AP);
2067         CMD(add_station, NEW_STATION);
2068         CMD(add_mpath, NEW_MPATH);
2069         CMD(update_mesh_config, SET_MESH_CONFIG);
2070         CMD(change_bss, SET_BSS);
2071         CMD(auth, AUTHENTICATE);
2072         CMD(assoc, ASSOCIATE);
2073         CMD(deauth, DEAUTHENTICATE);
2074         CMD(disassoc, DISASSOCIATE);
2075         CMD(join_ibss, JOIN_IBSS);
2076         CMD(join_mesh, JOIN_MESH);
2077         CMD(set_pmksa, SET_PMKSA);
2078         CMD(del_pmksa, DEL_PMKSA);
2079         CMD(flush_pmksa, FLUSH_PMKSA);
2080         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2081                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2082         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2083         CMD(mgmt_tx, FRAME);
2084         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2085         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2086                 i++;
2087                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2088                         goto nla_put_failure;
2089         }
2090         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2091             rdev->ops->join_mesh) {
2092                 i++;
2093                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2094                         goto nla_put_failure;
2095         }
2096         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2097                 CMD(tdls_mgmt, TDLS_MGMT);
2098                 CMD(tdls_oper, TDLS_OPER);
2099         }
2100         if (rdev->wiphy.max_sched_scan_reqs)
2101                 CMD(sched_scan_start, START_SCHED_SCAN);
2102         CMD(probe_client, PROBE_CLIENT);
2103         CMD(set_noack_map, SET_NOACK_MAP);
2104         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2105                 i++;
2106                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2107                         goto nla_put_failure;
2108         }
2109         CMD(start_p2p_device, START_P2P_DEVICE);
2110         CMD(set_mcast_rate, SET_MCAST_RATE);
2111 #ifdef CONFIG_NL80211_TESTMODE
2112         CMD(testmode_cmd, TESTMODE);
2113 #endif
2114
2115         if (rdev->ops->connect || rdev->ops->auth) {
2116                 i++;
2117                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2118                         goto nla_put_failure;
2119         }
2120
2121         if (rdev->ops->disconnect || rdev->ops->deauth) {
2122                 i++;
2123                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2124                         goto nla_put_failure;
2125         }
2126
2127         return i;
2128  nla_put_failure:
2129         return -ENOBUFS;
2130 }
2131
2132 static int
2133 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2134                            struct sk_buff *msg)
2135 {
2136         struct nlattr *ftm;
2137
2138         if (!cap->ftm.supported)
2139                 return 0;
2140
2141         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2142         if (!ftm)
2143                 return -ENOBUFS;
2144
2145         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2146                 return -ENOBUFS;
2147         if (cap->ftm.non_asap &&
2148             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2149                 return -ENOBUFS;
2150         if (cap->ftm.request_lci &&
2151             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2152                 return -ENOBUFS;
2153         if (cap->ftm.request_civicloc &&
2154             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2155                 return -ENOBUFS;
2156         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2157                         cap->ftm.preambles))
2158                 return -ENOBUFS;
2159         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2160                         cap->ftm.bandwidths))
2161                 return -ENOBUFS;
2162         if (cap->ftm.max_bursts_exponent >= 0 &&
2163             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2164                         cap->ftm.max_bursts_exponent))
2165                 return -ENOBUFS;
2166         if (cap->ftm.max_ftms_per_burst &&
2167             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2168                         cap->ftm.max_ftms_per_burst))
2169                 return -ENOBUFS;
2170         if (cap->ftm.trigger_based &&
2171             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2172                 return -ENOBUFS;
2173         if (cap->ftm.non_trigger_based &&
2174             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2175                 return -ENOBUFS;
2176
2177         nla_nest_end(msg, ftm);
2178         return 0;
2179 }
2180
2181 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2182                                   struct sk_buff *msg)
2183 {
2184         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2185         struct nlattr *pmsr, *caps;
2186
2187         if (!cap)
2188                 return 0;
2189
2190         /*
2191          * we don't need to clean up anything here since the caller
2192          * will genlmsg_cancel() if we fail
2193          */
2194
2195         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2196         if (!pmsr)
2197                 return -ENOBUFS;
2198
2199         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2200                 return -ENOBUFS;
2201
2202         if (cap->report_ap_tsf &&
2203             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2204                 return -ENOBUFS;
2205
2206         if (cap->randomize_mac_addr &&
2207             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2208                 return -ENOBUFS;
2209
2210         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2211         if (!caps)
2212                 return -ENOBUFS;
2213
2214         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2215                 return -ENOBUFS;
2216
2217         nla_nest_end(msg, caps);
2218         nla_nest_end(msg, pmsr);
2219
2220         return 0;
2221 }
2222
2223 static int
2224 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2225                               struct sk_buff *msg)
2226 {
2227         int i;
2228         struct nlattr *nested, *nested_akms;
2229         const struct wiphy_iftype_akm_suites *iftype_akms;
2230
2231         if (!rdev->wiphy.num_iftype_akm_suites ||
2232             !rdev->wiphy.iftype_akm_suites)
2233                 return 0;
2234
2235         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2236         if (!nested)
2237                 return -ENOBUFS;
2238
2239         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2240                 nested_akms = nla_nest_start(msg, i + 1);
2241                 if (!nested_akms)
2242                         return -ENOBUFS;
2243
2244                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2245
2246                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2247                                         iftype_akms->iftypes_mask))
2248                         return -ENOBUFS;
2249
2250                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2251                             sizeof(u32) * iftype_akms->n_akm_suites,
2252                             iftype_akms->akm_suites)) {
2253                         return -ENOBUFS;
2254                 }
2255                 nla_nest_end(msg, nested_akms);
2256         }
2257
2258         nla_nest_end(msg, nested);
2259
2260         return 0;
2261 }
2262
2263 static int
2264 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2265                                struct sk_buff *msg)
2266 {
2267         struct nlattr *supp;
2268
2269         if (!rdev->wiphy.tid_config_support.vif &&
2270             !rdev->wiphy.tid_config_support.peer)
2271                 return 0;
2272
2273         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2274         if (!supp)
2275                 return -ENOSPC;
2276
2277         if (rdev->wiphy.tid_config_support.vif &&
2278             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2279                               rdev->wiphy.tid_config_support.vif,
2280                               NL80211_TID_CONFIG_ATTR_PAD))
2281                 goto fail;
2282
2283         if (rdev->wiphy.tid_config_support.peer &&
2284             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2285                               rdev->wiphy.tid_config_support.peer,
2286                               NL80211_TID_CONFIG_ATTR_PAD))
2287                 goto fail;
2288
2289         /* for now we just use the same value ... makes more sense */
2290         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2291                        rdev->wiphy.tid_config_support.max_retry))
2292                 goto fail;
2293         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2294                        rdev->wiphy.tid_config_support.max_retry))
2295                 goto fail;
2296
2297         nla_nest_end(msg, supp);
2298
2299         return 0;
2300 fail:
2301         nla_nest_cancel(msg, supp);
2302         return -ENOBUFS;
2303 }
2304
2305 static int
2306 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2307                       struct sk_buff *msg)
2308 {
2309         struct nlattr *sar_capa, *specs, *sub_freq_range;
2310         u8 num_freq_ranges;
2311         int i;
2312
2313         if (!rdev->wiphy.sar_capa)
2314                 return 0;
2315
2316         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2317
2318         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2319         if (!sar_capa)
2320                 return -ENOSPC;
2321
2322         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2323                 goto fail;
2324
2325         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2326         if (!specs)
2327                 goto fail;
2328
2329         /* report supported freq_ranges */
2330         for (i = 0; i < num_freq_ranges; i++) {
2331                 sub_freq_range = nla_nest_start(msg, i + 1);
2332                 if (!sub_freq_range)
2333                         goto fail;
2334
2335                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2336                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2337                         goto fail;
2338
2339                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2340                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2341                         goto fail;
2342
2343                 nla_nest_end(msg, sub_freq_range);
2344         }
2345
2346         nla_nest_end(msg, specs);
2347         nla_nest_end(msg, sar_capa);
2348
2349         return 0;
2350 fail:
2351         nla_nest_cancel(msg, sar_capa);
2352         return -ENOBUFS;
2353 }
2354
2355 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2356 {
2357         struct nlattr *config;
2358
2359         if (!wiphy->mbssid_max_interfaces)
2360                 return 0;
2361
2362         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2363         if (!config)
2364                 return -ENOBUFS;
2365
2366         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2367                        wiphy->mbssid_max_interfaces))
2368                 goto fail;
2369
2370         if (wiphy->ema_max_profile_periodicity &&
2371             nla_put_u8(msg,
2372                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2373                        wiphy->ema_max_profile_periodicity))
2374                 goto fail;
2375
2376         nla_nest_end(msg, config);
2377         return 0;
2378
2379 fail:
2380         nla_nest_cancel(msg, config);
2381         return -ENOBUFS;
2382 }
2383
2384 struct nl80211_dump_wiphy_state {
2385         s64 filter_wiphy;
2386         long start;
2387         long split_start, band_start, chan_start, capa_start;
2388         bool split;
2389 };
2390
2391 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2392                               enum nl80211_commands cmd,
2393                               struct sk_buff *msg, u32 portid, u32 seq,
2394                               int flags, struct nl80211_dump_wiphy_state *state)
2395 {
2396         void *hdr;
2397         struct nlattr *nl_bands, *nl_band;
2398         struct nlattr *nl_freqs, *nl_freq;
2399         struct nlattr *nl_cmds;
2400         enum nl80211_band band;
2401         struct ieee80211_channel *chan;
2402         int i;
2403         const struct ieee80211_txrx_stypes *mgmt_stypes =
2404                                 rdev->wiphy.mgmt_stypes;
2405         u32 features;
2406
2407         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2408         if (!hdr)
2409                 return -ENOBUFS;
2410
2411         if (WARN_ON(!state))
2412                 return -EINVAL;
2413
2414         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2415             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2416                            wiphy_name(&rdev->wiphy)) ||
2417             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2418                         cfg80211_rdev_list_generation))
2419                 goto nla_put_failure;
2420
2421         if (cmd != NL80211_CMD_NEW_WIPHY)
2422                 goto finish;
2423
2424         switch (state->split_start) {
2425         case 0:
2426                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2427                                rdev->wiphy.retry_short) ||
2428                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2429                                rdev->wiphy.retry_long) ||
2430                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2431                                 rdev->wiphy.frag_threshold) ||
2432                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2433                                 rdev->wiphy.rts_threshold) ||
2434                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2435                                rdev->wiphy.coverage_class) ||
2436                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2437                                rdev->wiphy.max_scan_ssids) ||
2438                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2439                                rdev->wiphy.max_sched_scan_ssids) ||
2440                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2441                                 rdev->wiphy.max_scan_ie_len) ||
2442                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2443                                 rdev->wiphy.max_sched_scan_ie_len) ||
2444                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2445                                rdev->wiphy.max_match_sets))
2446                         goto nla_put_failure;
2447
2448                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2449                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2450                         goto nla_put_failure;
2451                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2452                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2453                         goto nla_put_failure;
2454                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2455                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2456                         goto nla_put_failure;
2457                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2458                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2459                         goto nla_put_failure;
2460                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2461                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2462                         goto nla_put_failure;
2463                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2464                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2465                         goto nla_put_failure;
2466                 state->split_start++;
2467                 if (state->split)
2468                         break;
2469                 fallthrough;
2470         case 1:
2471                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2472                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2473                             rdev->wiphy.cipher_suites))
2474                         goto nla_put_failure;
2475
2476                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2477                                rdev->wiphy.max_num_pmkids))
2478                         goto nla_put_failure;
2479
2480                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2481                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2482                         goto nla_put_failure;
2483
2484                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2485                                 rdev->wiphy.available_antennas_tx) ||
2486                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2487                                 rdev->wiphy.available_antennas_rx))
2488                         goto nla_put_failure;
2489
2490                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2491                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2492                                 rdev->wiphy.probe_resp_offload))
2493                         goto nla_put_failure;
2494
2495                 if ((rdev->wiphy.available_antennas_tx ||
2496                      rdev->wiphy.available_antennas_rx) &&
2497                     rdev->ops->get_antenna) {
2498                         u32 tx_ant = 0, rx_ant = 0;
2499                         int res;
2500
2501                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2502                         if (!res) {
2503                                 if (nla_put_u32(msg,
2504                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2505                                                 tx_ant) ||
2506                                     nla_put_u32(msg,
2507                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2508                                                 rx_ant))
2509                                         goto nla_put_failure;
2510                         }
2511                 }
2512
2513                 state->split_start++;
2514                 if (state->split)
2515                         break;
2516                 fallthrough;
2517         case 2:
2518                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2519                                         rdev->wiphy.interface_modes))
2520                                 goto nla_put_failure;
2521                 state->split_start++;
2522                 if (state->split)
2523                         break;
2524                 fallthrough;
2525         case 3:
2526                 nl_bands = nla_nest_start_noflag(msg,
2527                                                  NL80211_ATTR_WIPHY_BANDS);
2528                 if (!nl_bands)
2529                         goto nla_put_failure;
2530
2531                 for (band = state->band_start;
2532                      band < (state->split ?
2533                                 NUM_NL80211_BANDS :
2534                                 NL80211_BAND_60GHZ + 1);
2535                      band++) {
2536                         struct ieee80211_supported_band *sband;
2537
2538                         /* omit higher bands for ancient software */
2539                         if (band > NL80211_BAND_5GHZ && !state->split)
2540                                 break;
2541
2542                         sband = rdev->wiphy.bands[band];
2543
2544                         if (!sband)
2545                                 continue;
2546
2547                         nl_band = nla_nest_start_noflag(msg, band);
2548                         if (!nl_band)
2549                                 goto nla_put_failure;
2550
2551                         switch (state->chan_start) {
2552                         case 0:
2553                                 if (nl80211_send_band_rateinfo(msg, sband,
2554                                                                state->split))
2555                                         goto nla_put_failure;
2556                                 state->chan_start++;
2557                                 if (state->split)
2558                                         break;
2559                                 fallthrough;
2560                         default:
2561                                 /* add frequencies */
2562                                 nl_freqs = nla_nest_start_noflag(msg,
2563                                                                  NL80211_BAND_ATTR_FREQS);
2564                                 if (!nl_freqs)
2565                                         goto nla_put_failure;
2566
2567                                 for (i = state->chan_start - 1;
2568                                      i < sband->n_channels;
2569                                      i++) {
2570                                         nl_freq = nla_nest_start_noflag(msg,
2571                                                                         i);
2572                                         if (!nl_freq)
2573                                                 goto nla_put_failure;
2574
2575                                         chan = &sband->channels[i];
2576
2577                                         if (nl80211_msg_put_channel(
2578                                                         msg, &rdev->wiphy, chan,
2579                                                         state->split))
2580                                                 goto nla_put_failure;
2581
2582                                         nla_nest_end(msg, nl_freq);
2583                                         if (state->split)
2584                                                 break;
2585                                 }
2586                                 if (i < sband->n_channels)
2587                                         state->chan_start = i + 2;
2588                                 else
2589                                         state->chan_start = 0;
2590                                 nla_nest_end(msg, nl_freqs);
2591                         }
2592
2593                         nla_nest_end(msg, nl_band);
2594
2595                         if (state->split) {
2596                                 /* start again here */
2597                                 if (state->chan_start)
2598                                         band--;
2599                                 break;
2600                         }
2601                 }
2602                 nla_nest_end(msg, nl_bands);
2603
2604                 if (band < NUM_NL80211_BANDS)
2605                         state->band_start = band + 1;
2606                 else
2607                         state->band_start = 0;
2608
2609                 /* if bands & channels are done, continue outside */
2610                 if (state->band_start == 0 && state->chan_start == 0)
2611                         state->split_start++;
2612                 if (state->split)
2613                         break;
2614                 fallthrough;
2615         case 4:
2616                 nl_cmds = nla_nest_start_noflag(msg,
2617                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2618                 if (!nl_cmds)
2619                         goto nla_put_failure;
2620
2621                 i = nl80211_add_commands_unsplit(rdev, msg);
2622                 if (i < 0)
2623                         goto nla_put_failure;
2624                 if (state->split) {
2625                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2626                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2627                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2628                                 CMD(channel_switch, CHANNEL_SWITCH);
2629                         CMD(set_qos_map, SET_QOS_MAP);
2630                         if (rdev->wiphy.features &
2631                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2632                                 CMD(add_tx_ts, ADD_TX_TS);
2633                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2634                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2635                         CMD(update_ft_ies, UPDATE_FT_IES);
2636                         if (rdev->wiphy.sar_capa)
2637                                 CMD(set_sar_specs, SET_SAR_SPECS);
2638                 }
2639 #undef CMD
2640
2641                 nla_nest_end(msg, nl_cmds);
2642                 state->split_start++;
2643                 if (state->split)
2644                         break;
2645                 fallthrough;
2646         case 5:
2647                 if (rdev->ops->remain_on_channel &&
2648                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2649                     nla_put_u32(msg,
2650                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2651                                 rdev->wiphy.max_remain_on_channel_duration))
2652                         goto nla_put_failure;
2653
2654                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2655                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2656                         goto nla_put_failure;
2657
2658                 state->split_start++;
2659                 if (state->split)
2660                         break;
2661                 fallthrough;
2662         case 6:
2663 #ifdef CONFIG_PM
2664                 if (nl80211_send_wowlan(msg, rdev, state->split))
2665                         goto nla_put_failure;
2666                 state->split_start++;
2667                 if (state->split)
2668                         break;
2669 #else
2670                 state->split_start++;
2671 #endif
2672                 fallthrough;
2673         case 7:
2674                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2675                                         rdev->wiphy.software_iftypes))
2676                         goto nla_put_failure;
2677
2678                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2679                                                    state->split))
2680                         goto nla_put_failure;
2681
2682                 state->split_start++;
2683                 if (state->split)
2684                         break;
2685                 fallthrough;
2686         case 8:
2687                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2688                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2689                                 rdev->wiphy.ap_sme_capa))
2690                         goto nla_put_failure;
2691
2692                 features = rdev->wiphy.features;
2693                 /*
2694                  * We can only add the per-channel limit information if the
2695                  * dump is split, otherwise it makes it too big. Therefore
2696                  * only advertise it in that case.
2697                  */
2698                 if (state->split)
2699                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2700                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2701                         goto nla_put_failure;
2702
2703                 if (rdev->wiphy.ht_capa_mod_mask &&
2704                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2705                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2706                             rdev->wiphy.ht_capa_mod_mask))
2707                         goto nla_put_failure;
2708
2709                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2710                     rdev->wiphy.max_acl_mac_addrs &&
2711                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2712                                 rdev->wiphy.max_acl_mac_addrs))
2713                         goto nla_put_failure;
2714
2715                 /*
2716                  * Any information below this point is only available to
2717                  * applications that can deal with it being split. This
2718                  * helps ensure that newly added capabilities don't break
2719                  * older tools by overrunning their buffers.
2720                  *
2721                  * We still increment split_start so that in the split
2722                  * case we'll continue with more data in the next round,
2723                  * but break unconditionally so unsplit data stops here.
2724                  */
2725                 if (state->split)
2726                         state->split_start++;
2727                 else
2728                         state->split_start = 0;
2729                 break;
2730         case 9:
2731                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2732                         goto nla_put_failure;
2733
2734                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2735                                 rdev->wiphy.max_sched_scan_plans) ||
2736                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2737                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2738                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2739                                 rdev->wiphy.max_sched_scan_plan_iterations))
2740                         goto nla_put_failure;
2741
2742                 if (rdev->wiphy.extended_capabilities &&
2743                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2744                              rdev->wiphy.extended_capabilities_len,
2745                              rdev->wiphy.extended_capabilities) ||
2746                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2747                              rdev->wiphy.extended_capabilities_len,
2748                              rdev->wiphy.extended_capabilities_mask)))
2749                         goto nla_put_failure;
2750
2751                 if (rdev->wiphy.vht_capa_mod_mask &&
2752                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2753                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2754                             rdev->wiphy.vht_capa_mod_mask))
2755                         goto nla_put_failure;
2756
2757                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2758                             rdev->wiphy.perm_addr))
2759                         goto nla_put_failure;
2760
2761                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2762                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2763                             rdev->wiphy.addr_mask))
2764                         goto nla_put_failure;
2765
2766                 if (rdev->wiphy.n_addresses > 1) {
2767                         void *attr;
2768
2769                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2770                         if (!attr)
2771                                 goto nla_put_failure;
2772
2773                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2774                                 if (nla_put(msg, i + 1, ETH_ALEN,
2775                                             rdev->wiphy.addresses[i].addr))
2776                                         goto nla_put_failure;
2777
2778                         nla_nest_end(msg, attr);
2779                 }
2780
2781                 state->split_start++;
2782                 break;
2783         case 10:
2784                 if (nl80211_send_coalesce(msg, rdev))
2785                         goto nla_put_failure;
2786
2787                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2788                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2789                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2790                         goto nla_put_failure;
2791
2792                 if (rdev->wiphy.max_ap_assoc_sta &&
2793                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2794                                 rdev->wiphy.max_ap_assoc_sta))
2795                         goto nla_put_failure;
2796
2797                 state->split_start++;
2798                 break;
2799         case 11:
2800                 if (rdev->wiphy.n_vendor_commands) {
2801                         const struct nl80211_vendor_cmd_info *info;
2802                         struct nlattr *nested;
2803
2804                         nested = nla_nest_start_noflag(msg,
2805                                                        NL80211_ATTR_VENDOR_DATA);
2806                         if (!nested)
2807                                 goto nla_put_failure;
2808
2809                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2810                                 info = &rdev->wiphy.vendor_commands[i].info;
2811                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2812                                         goto nla_put_failure;
2813                         }
2814                         nla_nest_end(msg, nested);
2815                 }
2816
2817                 if (rdev->wiphy.n_vendor_events) {
2818                         const struct nl80211_vendor_cmd_info *info;
2819                         struct nlattr *nested;
2820
2821                         nested = nla_nest_start_noflag(msg,
2822                                                        NL80211_ATTR_VENDOR_EVENTS);
2823                         if (!nested)
2824                                 goto nla_put_failure;
2825
2826                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2827                                 info = &rdev->wiphy.vendor_events[i];
2828                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2829                                         goto nla_put_failure;
2830                         }
2831                         nla_nest_end(msg, nested);
2832                 }
2833                 state->split_start++;
2834                 break;
2835         case 12:
2836                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2837                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2838                                rdev->wiphy.max_num_csa_counters))
2839                         goto nla_put_failure;
2840
2841                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2842                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2843                         goto nla_put_failure;
2844
2845                 if (rdev->wiphy.max_sched_scan_reqs &&
2846                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2847                                 rdev->wiphy.max_sched_scan_reqs))
2848                         goto nla_put_failure;
2849
2850                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2851                             sizeof(rdev->wiphy.ext_features),
2852                             rdev->wiphy.ext_features))
2853                         goto nla_put_failure;
2854
2855                 if (rdev->wiphy.bss_select_support) {
2856                         struct nlattr *nested;
2857                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2858
2859                         nested = nla_nest_start_noflag(msg,
2860                                                        NL80211_ATTR_BSS_SELECT);
2861                         if (!nested)
2862                                 goto nla_put_failure;
2863
2864                         i = 0;
2865                         while (bss_select_support) {
2866                                 if ((bss_select_support & 1) &&
2867                                     nla_put_flag(msg, i))
2868                                         goto nla_put_failure;
2869                                 i++;
2870                                 bss_select_support >>= 1;
2871                         }
2872                         nla_nest_end(msg, nested);
2873                 }
2874
2875                 state->split_start++;
2876                 break;
2877         case 13:
2878                 if (rdev->wiphy.num_iftype_ext_capab &&
2879                     rdev->wiphy.iftype_ext_capab) {
2880                         struct nlattr *nested_ext_capab, *nested;
2881
2882                         nested = nla_nest_start_noflag(msg,
2883                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2884                         if (!nested)
2885                                 goto nla_put_failure;
2886
2887                         for (i = state->capa_start;
2888                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2889                                 const struct wiphy_iftype_ext_capab *capab;
2890
2891                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2892
2893                                 nested_ext_capab = nla_nest_start_noflag(msg,
2894                                                                          i);
2895                                 if (!nested_ext_capab ||
2896                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2897                                                 capab->iftype) ||
2898                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2899                                             capab->extended_capabilities_len,
2900                                             capab->extended_capabilities) ||
2901                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2902                                             capab->extended_capabilities_len,
2903                                             capab->extended_capabilities_mask))
2904                                         goto nla_put_failure;
2905
2906                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2907                                     (nla_put_u16(msg,
2908                                                  NL80211_ATTR_EML_CAPABILITY,
2909                                                  capab->eml_capabilities) ||
2910                                      nla_put_u16(msg,
2911                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2912                                                  capab->mld_capa_and_ops)))
2913                                         goto nla_put_failure;
2914
2915                                 nla_nest_end(msg, nested_ext_capab);
2916                                 if (state->split)
2917                                         break;
2918                         }
2919                         nla_nest_end(msg, nested);
2920                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2921                                 state->capa_start = i + 1;
2922                                 break;
2923                         }
2924                 }
2925
2926                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2927                                 rdev->wiphy.nan_supported_bands))
2928                         goto nla_put_failure;
2929
2930                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2931                                             NL80211_EXT_FEATURE_TXQS)) {
2932                         struct cfg80211_txq_stats txqstats = {};
2933                         int res;
2934
2935                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2936                         if (!res &&
2937                             !nl80211_put_txq_stats(msg, &txqstats,
2938                                                    NL80211_ATTR_TXQ_STATS))
2939                                 goto nla_put_failure;
2940
2941                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2942                                         rdev->wiphy.txq_limit))
2943                                 goto nla_put_failure;
2944                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2945                                         rdev->wiphy.txq_memory_limit))
2946                                 goto nla_put_failure;
2947                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2948                                         rdev->wiphy.txq_quantum))
2949                                 goto nla_put_failure;
2950                 }
2951
2952                 state->split_start++;
2953                 break;
2954         case 14:
2955                 if (nl80211_send_pmsr_capa(rdev, msg))
2956                         goto nla_put_failure;
2957
2958                 state->split_start++;
2959                 break;
2960         case 15:
2961                 if (rdev->wiphy.akm_suites &&
2962                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2963                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2964                             rdev->wiphy.akm_suites))
2965                         goto nla_put_failure;
2966
2967                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2968                         goto nla_put_failure;
2969
2970                 if (nl80211_put_tid_config_support(rdev, msg))
2971                         goto nla_put_failure;
2972                 state->split_start++;
2973                 break;
2974         case 16:
2975                 if (nl80211_put_sar_specs(rdev, msg))
2976                         goto nla_put_failure;
2977
2978                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2979                         goto nla_put_failure;
2980
2981                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2982                                 rdev->wiphy.max_num_akm_suites))
2983                         goto nla_put_failure;
2984
2985                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2986                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2987
2988                 if (rdev->wiphy.hw_timestamp_max_peers &&
2989                     nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
2990                                 rdev->wiphy.hw_timestamp_max_peers))
2991                         goto nla_put_failure;
2992
2993                 /* done */
2994                 state->split_start = 0;
2995                 break;
2996         }
2997  finish:
2998         genlmsg_end(msg, hdr);
2999         return 0;
3000
3001  nla_put_failure:
3002         genlmsg_cancel(msg, hdr);
3003         return -EMSGSIZE;
3004 }
3005
3006 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3007                                     struct netlink_callback *cb,
3008                                     struct nl80211_dump_wiphy_state *state)
3009 {
3010         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3011         int ret;
3012
3013         if (!tb)
3014                 return -ENOMEM;
3015
3016         ret = nlmsg_parse_deprecated(cb->nlh,
3017                                      GENL_HDRLEN + nl80211_fam.hdrsize,
3018                                      tb, nl80211_fam.maxattr,
3019                                      nl80211_policy, NULL);
3020         /* ignore parse errors for backward compatibility */
3021         if (ret) {
3022                 ret = 0;
3023                 goto out;
3024         }
3025
3026         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3027         if (tb[NL80211_ATTR_WIPHY])
3028                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3029         if (tb[NL80211_ATTR_WDEV])
3030                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3031         if (tb[NL80211_ATTR_IFINDEX]) {
3032                 struct net_device *netdev;
3033                 struct cfg80211_registered_device *rdev;
3034                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3035
3036                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3037                 if (!netdev) {
3038                         ret = -ENODEV;
3039                         goto out;
3040                 }
3041                 if (netdev->ieee80211_ptr) {
3042                         rdev = wiphy_to_rdev(
3043                                 netdev->ieee80211_ptr->wiphy);
3044                         state->filter_wiphy = rdev->wiphy_idx;
3045                 }
3046         }
3047
3048         ret = 0;
3049 out:
3050         kfree(tb);
3051         return ret;
3052 }
3053
3054 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3055 {
3056         int idx = 0, ret;
3057         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3058         struct cfg80211_registered_device *rdev;
3059
3060         rtnl_lock();
3061         if (!state) {
3062                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3063                 if (!state) {
3064                         rtnl_unlock();
3065                         return -ENOMEM;
3066                 }
3067                 state->filter_wiphy = -1;
3068                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3069                 if (ret) {
3070                         kfree(state);
3071                         rtnl_unlock();
3072                         return ret;
3073                 }
3074                 cb->args[0] = (long)state;
3075         }
3076
3077         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3078                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3079                         continue;
3080                 if (++idx <= state->start)
3081                         continue;
3082                 if (state->filter_wiphy != -1 &&
3083                     state->filter_wiphy != rdev->wiphy_idx)
3084                         continue;
3085                 wiphy_lock(&rdev->wiphy);
3086                 /* attempt to fit multiple wiphy data chunks into the skb */
3087                 do {
3088                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3089                                                  skb,
3090                                                  NETLINK_CB(cb->skb).portid,
3091                                                  cb->nlh->nlmsg_seq,
3092                                                  NLM_F_MULTI, state);
3093                         if (ret < 0) {
3094                                 /*
3095                                  * If sending the wiphy data didn't fit (ENOBUFS
3096                                  * or EMSGSIZE returned), this SKB is still
3097                                  * empty (so it's not too big because another
3098                                  * wiphy dataset is already in the skb) and
3099                                  * we've not tried to adjust the dump allocation
3100                                  * yet ... then adjust the alloc size to be
3101                                  * bigger, and return 1 but with the empty skb.
3102                                  * This results in an empty message being RX'ed
3103                                  * in userspace, but that is ignored.
3104                                  *
3105                                  * We can then retry with the larger buffer.
3106                                  */
3107                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3108                                     !skb->len && !state->split &&
3109                                     cb->min_dump_alloc < 4096) {
3110                                         cb->min_dump_alloc = 4096;
3111                                         state->split_start = 0;
3112                                         wiphy_unlock(&rdev->wiphy);
3113                                         rtnl_unlock();
3114                                         return 1;
3115                                 }
3116                                 idx--;
3117                                 break;
3118                         }
3119                 } while (state->split_start > 0);
3120                 wiphy_unlock(&rdev->wiphy);
3121                 break;
3122         }
3123         rtnl_unlock();
3124
3125         state->start = idx;
3126
3127         return skb->len;
3128 }
3129
3130 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3131 {
3132         kfree((void *)cb->args[0]);
3133         return 0;
3134 }
3135
3136 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3137 {
3138         struct sk_buff *msg;
3139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3140         struct nl80211_dump_wiphy_state state = {};
3141
3142         msg = nlmsg_new(4096, GFP_KERNEL);
3143         if (!msg)
3144                 return -ENOMEM;
3145
3146         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3147                                info->snd_portid, info->snd_seq, 0,
3148                                &state) < 0) {
3149                 nlmsg_free(msg);
3150                 return -ENOBUFS;
3151         }
3152
3153         return genlmsg_reply(msg, info);
3154 }
3155
3156 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3157         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3158         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3159         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3160         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3161         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3162 };
3163
3164 static int parse_txq_params(struct nlattr *tb[],
3165                             struct ieee80211_txq_params *txq_params)
3166 {
3167         u8 ac;
3168
3169         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3170             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3171             !tb[NL80211_TXQ_ATTR_AIFS])
3172                 return -EINVAL;
3173
3174         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3175         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3176         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3177         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3178         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3179
3180         if (ac >= NL80211_NUM_ACS)
3181                 return -EINVAL;
3182         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3183         return 0;
3184 }
3185
3186 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3187 {
3188         /*
3189          * You can only set the channel explicitly for some interfaces,
3190          * most have their channel managed via their respective
3191          * "establish a connection" command (connect, join, ...)
3192          *
3193          * For AP/GO and mesh mode, the channel can be set with the
3194          * channel userspace API, but is only stored and passed to the
3195          * low-level driver when the AP starts or the mesh is joined.
3196          * This is for backward compatibility, userspace can also give
3197          * the channel in the start-ap or join-mesh commands instead.
3198          *
3199          * Monitors are special as they are normally slaved to
3200          * whatever else is going on, so they have their own special
3201          * operation to set the monitor channel if possible.
3202          */
3203         return !wdev ||
3204                 wdev->iftype == NL80211_IFTYPE_AP ||
3205                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3206                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3207                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3208 }
3209
3210 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3211                                       struct genl_info *info,
3212                                       const struct cfg80211_chan_def *chandef,
3213                                       u16 *punct_bitmap)
3214 {
3215         if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3216                 return -EINVAL;
3217
3218         *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3219         if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3220                 return -EINVAL;
3221
3222         return 0;
3223 }
3224
3225 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3226                           struct genl_info *info,
3227                           struct cfg80211_chan_def *chandef)
3228 {
3229         struct netlink_ext_ack *extack = info->extack;
3230         struct nlattr **attrs = info->attrs;
3231         u32 control_freq;
3232
3233         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3234                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3235                                     "Frequency is missing");
3236                 return -EINVAL;
3237         }
3238
3239         control_freq = MHZ_TO_KHZ(
3240                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3241         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3242                 control_freq +=
3243                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3244
3245         memset(chandef, 0, sizeof(*chandef));
3246         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3247         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3248         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3249         chandef->freq1_offset = control_freq % 1000;
3250         chandef->center_freq2 = 0;
3251
3252         /* Primary channel not allowed */
3253         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3254                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3255                                     "Channel is disabled");
3256                 return -EINVAL;
3257         }
3258
3259         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3260                 enum nl80211_channel_type chantype;
3261
3262                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3263
3264                 switch (chantype) {
3265                 case NL80211_CHAN_NO_HT:
3266                 case NL80211_CHAN_HT20:
3267                 case NL80211_CHAN_HT40PLUS:
3268                 case NL80211_CHAN_HT40MINUS:
3269                         cfg80211_chandef_create(chandef, chandef->chan,
3270                                                 chantype);
3271                         /* user input for center_freq is incorrect */
3272                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3273                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3274                                 NL_SET_ERR_MSG_ATTR(extack,
3275                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3276                                                     "bad center frequency 1");
3277                                 return -EINVAL;
3278                         }
3279                         /* center_freq2 must be zero */
3280                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3281                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3282                                 NL_SET_ERR_MSG_ATTR(extack,
3283                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3284                                                     "center frequency 2 can't be used");
3285                                 return -EINVAL;
3286                         }
3287                         break;
3288                 default:
3289                         NL_SET_ERR_MSG_ATTR(extack,
3290                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3291                                             "invalid channel type");
3292                         return -EINVAL;
3293                 }
3294         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3295                 chandef->width =
3296                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3297                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3298                         /* User input error for channel width doesn't match channel  */
3299                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3300                                 NL_SET_ERR_MSG_ATTR(extack,
3301                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3302                                                     "bad channel width");
3303                                 return -EINVAL;
3304                         }
3305                 }
3306                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3307                         chandef->center_freq1 =
3308                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3309                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3310                                 chandef->freq1_offset = nla_get_u32(
3311                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3312                         else
3313                                 chandef->freq1_offset = 0;
3314                 }
3315                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3316                         chandef->center_freq2 =
3317                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3318         }
3319
3320         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3321                 chandef->edmg.channels =
3322                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3323
3324                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3325                         chandef->edmg.bw_config =
3326                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3327         } else {
3328                 chandef->edmg.bw_config = 0;
3329                 chandef->edmg.channels = 0;
3330         }
3331
3332         if (!cfg80211_chandef_valid(chandef)) {
3333                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3334                 return -EINVAL;
3335         }
3336
3337         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3338                                      IEEE80211_CHAN_DISABLED)) {
3339                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3340                 return -EINVAL;
3341         }
3342
3343         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3344              chandef->width == NL80211_CHAN_WIDTH_10) &&
3345             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3346                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3347                 return -EINVAL;
3348         }
3349
3350         return 0;
3351 }
3352
3353 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3354                                  struct net_device *dev,
3355                                  struct genl_info *info,
3356                                  int _link_id)
3357 {
3358         struct cfg80211_chan_def chandef;
3359         int result;
3360         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3361         struct wireless_dev *wdev = NULL;
3362         int link_id = _link_id;
3363
3364         if (dev)
3365                 wdev = dev->ieee80211_ptr;
3366         if (!nl80211_can_set_dev_channel(wdev))
3367                 return -EOPNOTSUPP;
3368         if (wdev)
3369                 iftype = wdev->iftype;
3370
3371         if (link_id < 0) {
3372                 if (wdev && wdev->valid_links)
3373                         return -EINVAL;
3374                 link_id = 0;
3375         }
3376
3377         result = nl80211_parse_chandef(rdev, info, &chandef);
3378         if (result)
3379                 return result;
3380
3381         switch (iftype) {
3382         case NL80211_IFTYPE_AP:
3383         case NL80211_IFTYPE_P2P_GO:
3384                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3385                                                    iftype))
3386                         return -EINVAL;
3387                 if (wdev->links[link_id].ap.beacon_interval) {
3388                         struct ieee80211_channel *cur_chan;
3389
3390                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3391                             !(rdev->wiphy.features &
3392                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3393                                 return -EBUSY;
3394
3395                         /* Only allow dynamic channel width changes */
3396                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3397                         if (chandef.chan != cur_chan)
3398                                 return -EBUSY;
3399
3400                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3401                                                        &chandef);
3402                         if (result)
3403                                 return result;
3404                         wdev->links[link_id].ap.chandef = chandef;
3405                 } else {
3406                         wdev->u.ap.preset_chandef = chandef;
3407                 }
3408                 return 0;
3409         case NL80211_IFTYPE_MESH_POINT:
3410                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3411         case NL80211_IFTYPE_MONITOR:
3412                 return cfg80211_set_monitor_channel(rdev, &chandef);
3413         default:
3414                 break;
3415         }
3416
3417         return -EINVAL;
3418 }
3419
3420 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3421 {
3422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3423         int link_id = nl80211_link_id_or_invalid(info->attrs);
3424         struct net_device *netdev = info->user_ptr[1];
3425         int ret;
3426
3427         wdev_lock(netdev->ieee80211_ptr);
3428         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3429         wdev_unlock(netdev->ieee80211_ptr);
3430
3431         return ret;
3432 }
3433
3434 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3435 {
3436         struct cfg80211_registered_device *rdev = NULL;
3437         struct net_device *netdev = NULL;
3438         struct wireless_dev *wdev;
3439         int result = 0, rem_txq_params = 0;
3440         struct nlattr *nl_txq_params;
3441         u32 changed;
3442         u8 retry_short = 0, retry_long = 0;
3443         u32 frag_threshold = 0, rts_threshold = 0;
3444         u8 coverage_class = 0;
3445         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3446
3447         rtnl_lock();
3448         /*
3449          * Try to find the wiphy and netdev. Normally this
3450          * function shouldn't need the netdev, but this is
3451          * done for backward compatibility -- previously
3452          * setting the channel was done per wiphy, but now
3453          * it is per netdev. Previous userland like hostapd
3454          * also passed a netdev to set_wiphy, so that it is
3455          * possible to let that go to the right netdev!
3456          */
3457
3458         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3459                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3460
3461                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3462                 if (netdev && netdev->ieee80211_ptr)
3463                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3464                 else
3465                         netdev = NULL;
3466         }
3467
3468         if (!netdev) {
3469                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3470                                                   info->attrs);
3471                 if (IS_ERR(rdev)) {
3472                         rtnl_unlock();
3473                         return PTR_ERR(rdev);
3474                 }
3475                 wdev = NULL;
3476                 netdev = NULL;
3477                 result = 0;
3478         } else
3479                 wdev = netdev->ieee80211_ptr;
3480
3481         wiphy_lock(&rdev->wiphy);
3482
3483         /*
3484          * end workaround code, by now the rdev is available
3485          * and locked, and wdev may or may not be NULL.
3486          */
3487
3488         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3489                 result = cfg80211_dev_rename(
3490                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3491         rtnl_unlock();
3492
3493         if (result)
3494                 goto out;
3495
3496         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3497                 struct ieee80211_txq_params txq_params;
3498                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3499
3500                 if (!rdev->ops->set_txq_params) {
3501                         result = -EOPNOTSUPP;
3502                         goto out;
3503                 }
3504
3505                 if (!netdev) {
3506                         result = -EINVAL;
3507                         goto out;
3508                 }
3509
3510                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3511                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3512                         result = -EINVAL;
3513                         goto out;
3514                 }
3515
3516                 if (!netif_running(netdev)) {
3517                         result = -ENETDOWN;
3518                         goto out;
3519                 }
3520
3521                 nla_for_each_nested(nl_txq_params,
3522                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3523                                     rem_txq_params) {
3524                         result = nla_parse_nested_deprecated(tb,
3525                                                              NL80211_TXQ_ATTR_MAX,
3526                                                              nl_txq_params,
3527                                                              txq_params_policy,
3528                                                              info->extack);
3529                         if (result)
3530                                 goto out;
3531                         result = parse_txq_params(tb, &txq_params);
3532                         if (result)
3533                                 goto out;
3534
3535                         txq_params.link_id =
3536                                 nl80211_link_id_or_invalid(info->attrs);
3537
3538                         wdev_lock(netdev->ieee80211_ptr);
3539                         if (txq_params.link_id >= 0 &&
3540                             !(netdev->ieee80211_ptr->valid_links &
3541                               BIT(txq_params.link_id)))
3542                                 result = -ENOLINK;
3543                         else if (txq_params.link_id >= 0 &&
3544                                  !netdev->ieee80211_ptr->valid_links)
3545                                 result = -EINVAL;
3546                         else
3547                                 result = rdev_set_txq_params(rdev, netdev,
3548                                                              &txq_params);
3549                         wdev_unlock(netdev->ieee80211_ptr);
3550                         if (result)
3551                                 goto out;
3552                 }
3553         }
3554
3555         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3556                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3557
3558                 if (wdev) {
3559                         wdev_lock(wdev);
3560                         result = __nl80211_set_channel(
3561                                 rdev,
3562                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3563                                 info, link_id);
3564                         wdev_unlock(wdev);
3565                 } else {
3566                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3567                 }
3568
3569                 if (result)
3570                         goto out;
3571         }
3572
3573         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3574                 struct wireless_dev *txp_wdev = wdev;
3575                 enum nl80211_tx_power_setting type;
3576                 int idx, mbm = 0;
3577
3578                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3579                         txp_wdev = NULL;
3580
3581                 if (!rdev->ops->set_tx_power) {
3582                         result = -EOPNOTSUPP;
3583                         goto out;
3584                 }
3585
3586                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3587                 type = nla_get_u32(info->attrs[idx]);
3588
3589                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3590                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3591                         result = -EINVAL;
3592                         goto out;
3593                 }
3594
3595                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3596                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3597                         mbm = nla_get_u32(info->attrs[idx]);
3598                 }
3599
3600                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3601                 if (result)
3602                         goto out;
3603         }
3604
3605         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3606             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3607                 u32 tx_ant, rx_ant;
3608
3609                 if ((!rdev->wiphy.available_antennas_tx &&
3610                      !rdev->wiphy.available_antennas_rx) ||
3611                     !rdev->ops->set_antenna) {
3612                         result = -EOPNOTSUPP;
3613                         goto out;
3614                 }
3615
3616                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3617                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3618
3619                 /* reject antenna configurations which don't match the
3620                  * available antenna masks, except for the "all" mask */
3621                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3622                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3623                         result = -EINVAL;
3624                         goto out;
3625                 }
3626
3627                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3628                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3629
3630                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3631                 if (result)
3632                         goto out;
3633         }
3634
3635         changed = 0;
3636
3637         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3638                 retry_short = nla_get_u8(
3639                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3640
3641                 changed |= WIPHY_PARAM_RETRY_SHORT;
3642         }
3643
3644         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3645                 retry_long = nla_get_u8(
3646                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3647
3648                 changed |= WIPHY_PARAM_RETRY_LONG;
3649         }
3650
3651         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3652                 frag_threshold = nla_get_u32(
3653                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3654                 if (frag_threshold < 256) {
3655                         result = -EINVAL;
3656                         goto out;
3657                 }
3658
3659                 if (frag_threshold != (u32) -1) {
3660                         /*
3661                          * Fragments (apart from the last one) are required to
3662                          * have even length. Make the fragmentation code
3663                          * simpler by stripping LSB should someone try to use
3664                          * odd threshold value.
3665                          */
3666                         frag_threshold &= ~0x1;
3667                 }
3668                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3669         }
3670
3671         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3672                 rts_threshold = nla_get_u32(
3673                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3674                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3675         }
3676
3677         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3678                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3679                         result = -EINVAL;
3680                         goto out;
3681                 }
3682
3683                 coverage_class = nla_get_u8(
3684                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3685                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3686         }
3687
3688         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3689                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3690                         result = -EOPNOTSUPP;
3691                         goto out;
3692                 }
3693
3694                 changed |= WIPHY_PARAM_DYN_ACK;
3695         }
3696
3697         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3698                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3699                                              NL80211_EXT_FEATURE_TXQS)) {
3700                         result = -EOPNOTSUPP;
3701                         goto out;
3702                 }
3703                 txq_limit = nla_get_u32(
3704                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3705                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3706         }
3707
3708         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3709                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3710                                              NL80211_EXT_FEATURE_TXQS)) {
3711                         result = -EOPNOTSUPP;
3712                         goto out;
3713                 }
3714                 txq_memory_limit = nla_get_u32(
3715                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3716                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3717         }
3718
3719         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3720                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3721                                              NL80211_EXT_FEATURE_TXQS)) {
3722                         result = -EOPNOTSUPP;
3723                         goto out;
3724                 }
3725                 txq_quantum = nla_get_u32(
3726                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3727                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3728         }
3729
3730         if (changed) {
3731                 u8 old_retry_short, old_retry_long;
3732                 u32 old_frag_threshold, old_rts_threshold;
3733                 u8 old_coverage_class;
3734                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3735
3736                 if (!rdev->ops->set_wiphy_params) {
3737                         result = -EOPNOTSUPP;
3738                         goto out;
3739                 }
3740
3741                 old_retry_short = rdev->wiphy.retry_short;
3742                 old_retry_long = rdev->wiphy.retry_long;
3743                 old_frag_threshold = rdev->wiphy.frag_threshold;
3744                 old_rts_threshold = rdev->wiphy.rts_threshold;
3745                 old_coverage_class = rdev->wiphy.coverage_class;
3746                 old_txq_limit = rdev->wiphy.txq_limit;
3747                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3748                 old_txq_quantum = rdev->wiphy.txq_quantum;
3749
3750                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3751                         rdev->wiphy.retry_short = retry_short;
3752                 if (changed & WIPHY_PARAM_RETRY_LONG)
3753                         rdev->wiphy.retry_long = retry_long;
3754                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3755                         rdev->wiphy.frag_threshold = frag_threshold;
3756                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3757                         rdev->wiphy.rts_threshold = rts_threshold;
3758                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3759                         rdev->wiphy.coverage_class = coverage_class;
3760                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3761                         rdev->wiphy.txq_limit = txq_limit;
3762                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3763                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3764                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3765                         rdev->wiphy.txq_quantum = txq_quantum;
3766
3767                 result = rdev_set_wiphy_params(rdev, changed);
3768                 if (result) {
3769                         rdev->wiphy.retry_short = old_retry_short;
3770                         rdev->wiphy.retry_long = old_retry_long;
3771                         rdev->wiphy.frag_threshold = old_frag_threshold;
3772                         rdev->wiphy.rts_threshold = old_rts_threshold;
3773                         rdev->wiphy.coverage_class = old_coverage_class;
3774                         rdev->wiphy.txq_limit = old_txq_limit;
3775                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3776                         rdev->wiphy.txq_quantum = old_txq_quantum;
3777                         goto out;
3778                 }
3779         }
3780
3781         result = 0;
3782
3783 out:
3784         wiphy_unlock(&rdev->wiphy);
3785         return result;
3786 }
3787
3788 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3789 {
3790         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3791                 return -EINVAL;
3792
3793         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3794                         chandef->chan->center_freq))
3795                 return -ENOBUFS;
3796         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3797                         chandef->chan->freq_offset))
3798                 return -ENOBUFS;
3799         switch (chandef->width) {
3800         case NL80211_CHAN_WIDTH_20_NOHT:
3801         case NL80211_CHAN_WIDTH_20:
3802         case NL80211_CHAN_WIDTH_40:
3803                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3804                                 cfg80211_get_chandef_type(chandef)))
3805                         return -ENOBUFS;
3806                 break;
3807         default:
3808                 break;
3809         }
3810         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3811                 return -ENOBUFS;
3812         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3813                 return -ENOBUFS;
3814         if (chandef->center_freq2 &&
3815             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3816                 return -ENOBUFS;
3817         return 0;
3818 }
3819 EXPORT_SYMBOL(nl80211_send_chandef);
3820
3821 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3822                               struct cfg80211_registered_device *rdev,
3823                               struct wireless_dev *wdev,
3824                               enum nl80211_commands cmd)
3825 {
3826         struct net_device *dev = wdev->netdev;
3827         void *hdr;
3828
3829         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3830                 cmd != NL80211_CMD_DEL_INTERFACE &&
3831                 cmd != NL80211_CMD_SET_INTERFACE);
3832
3833         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3834         if (!hdr)
3835                 return -1;
3836
3837         if (dev &&
3838             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3839              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3840                 goto nla_put_failure;
3841
3842         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3843             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3844             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3845                               NL80211_ATTR_PAD) ||
3846             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3847             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3848                         rdev->devlist_generation ^
3849                         (cfg80211_rdev_list_generation << 2)) ||
3850             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3851                 goto nla_put_failure;
3852
3853         if (rdev->ops->get_channel && !wdev->valid_links) {
3854                 struct cfg80211_chan_def chandef = {};
3855                 int ret;
3856
3857                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3858                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3859                         goto nla_put_failure;
3860         }
3861
3862         if (rdev->ops->get_tx_power) {
3863                 int dbm, ret;
3864
3865                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3866                 if (ret == 0 &&
3867                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3868                                 DBM_TO_MBM(dbm)))
3869                         goto nla_put_failure;
3870         }
3871
3872         wdev_lock(wdev);
3873         switch (wdev->iftype) {
3874         case NL80211_IFTYPE_AP:
3875         case NL80211_IFTYPE_P2P_GO:
3876                 if (wdev->u.ap.ssid_len &&
3877                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3878                             wdev->u.ap.ssid))
3879                         goto nla_put_failure_locked;
3880                 break;
3881         case NL80211_IFTYPE_STATION:
3882         case NL80211_IFTYPE_P2P_CLIENT:
3883                 if (wdev->u.client.ssid_len &&
3884                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3885                             wdev->u.client.ssid))
3886                         goto nla_put_failure_locked;
3887                 break;
3888         case NL80211_IFTYPE_ADHOC:
3889                 if (wdev->u.ibss.ssid_len &&
3890                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3891                             wdev->u.ibss.ssid))
3892                         goto nla_put_failure_locked;
3893                 break;
3894         default:
3895                 /* nothing */
3896                 break;
3897         }
3898         wdev_unlock(wdev);
3899
3900         if (rdev->ops->get_txq_stats) {
3901                 struct cfg80211_txq_stats txqstats = {};
3902                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3903
3904                 if (ret == 0 &&
3905                     !nl80211_put_txq_stats(msg, &txqstats,
3906                                            NL80211_ATTR_TXQ_STATS))
3907                         goto nla_put_failure;
3908         }
3909
3910         if (wdev->valid_links) {
3911                 unsigned int link_id;
3912                 struct nlattr *links = nla_nest_start(msg,
3913                                                       NL80211_ATTR_MLO_LINKS);
3914
3915                 if (!links)
3916                         goto nla_put_failure;
3917
3918                 for_each_valid_link(wdev, link_id) {
3919                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3920                         struct cfg80211_chan_def chandef = {};
3921                         int ret;
3922
3923                         if (!link)
3924                                 goto nla_put_failure;
3925
3926                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3927                                 goto nla_put_failure;
3928                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3929                                     wdev->links[link_id].addr))
3930                                 goto nla_put_failure;
3931
3932                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3933                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3934                                 goto nla_put_failure;
3935
3936                         nla_nest_end(msg, link);
3937                 }
3938
3939                 nla_nest_end(msg, links);
3940         }
3941
3942         genlmsg_end(msg, hdr);
3943         return 0;
3944
3945  nla_put_failure_locked:
3946         wdev_unlock(wdev);
3947  nla_put_failure:
3948         genlmsg_cancel(msg, hdr);
3949         return -EMSGSIZE;
3950 }
3951
3952 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3953 {
3954         int wp_idx = 0;
3955         int if_idx = 0;
3956         int wp_start = cb->args[0];
3957         int if_start = cb->args[1];
3958         int filter_wiphy = -1;
3959         struct cfg80211_registered_device *rdev;
3960         struct wireless_dev *wdev;
3961         int ret;
3962
3963         rtnl_lock();
3964         if (!cb->args[2]) {
3965                 struct nl80211_dump_wiphy_state state = {
3966                         .filter_wiphy = -1,
3967                 };
3968
3969                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3970                 if (ret)
3971                         goto out_unlock;
3972
3973                 filter_wiphy = state.filter_wiphy;
3974
3975                 /*
3976                  * if filtering, set cb->args[2] to +1 since 0 is the default
3977                  * value needed to determine that parsing is necessary.
3978                  */
3979                 if (filter_wiphy >= 0)
3980                         cb->args[2] = filter_wiphy + 1;
3981                 else
3982                         cb->args[2] = -1;
3983         } else if (cb->args[2] > 0) {
3984                 filter_wiphy = cb->args[2] - 1;
3985         }
3986
3987         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3988                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3989                         continue;
3990                 if (wp_idx < wp_start) {
3991                         wp_idx++;
3992                         continue;
3993                 }
3994
3995                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3996                         continue;
3997
3998                 if_idx = 0;
3999
4000                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4001                         if (if_idx < if_start) {
4002                                 if_idx++;
4003                                 continue;
4004                         }
4005                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4006                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
4007                                                rdev, wdev,
4008                                                NL80211_CMD_NEW_INTERFACE) < 0) {
4009                                 goto out;
4010                         }
4011                         if_idx++;
4012                 }
4013
4014                 wp_idx++;
4015         }
4016  out:
4017         cb->args[0] = wp_idx;
4018         cb->args[1] = if_idx;
4019
4020         ret = skb->len;
4021  out_unlock:
4022         rtnl_unlock();
4023
4024         return ret;
4025 }
4026
4027 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4028 {
4029         struct sk_buff *msg;
4030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4031         struct wireless_dev *wdev = info->user_ptr[1];
4032
4033         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4034         if (!msg)
4035                 return -ENOMEM;
4036
4037         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4038                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4039                 nlmsg_free(msg);
4040                 return -ENOBUFS;
4041         }
4042
4043         return genlmsg_reply(msg, info);
4044 }
4045
4046 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4047         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4048         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4049         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4050         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4051         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4052         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4053 };
4054
4055 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4056 {
4057         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4058         int flag;
4059
4060         *mntrflags = 0;
4061
4062         if (!nla)
4063                 return -EINVAL;
4064
4065         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4066                 return -EINVAL;
4067
4068         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4069                 if (flags[flag])
4070                         *mntrflags |= (1<<flag);
4071
4072         *mntrflags |= MONITOR_FLAG_CHANGED;
4073
4074         return 0;
4075 }
4076
4077 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4078                                      enum nl80211_iftype type,
4079                                      struct genl_info *info,
4080                                      struct vif_params *params)
4081 {
4082         bool change = false;
4083         int err;
4084
4085         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4086                 if (type != NL80211_IFTYPE_MONITOR)
4087                         return -EINVAL;
4088
4089                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4090                                           &params->flags);
4091                 if (err)
4092                         return err;
4093
4094                 change = true;
4095         }
4096
4097         if (params->flags & MONITOR_FLAG_ACTIVE &&
4098             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4099                 return -EOPNOTSUPP;
4100
4101         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4102                 const u8 *mumimo_groups;
4103                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4104
4105                 if (type != NL80211_IFTYPE_MONITOR)
4106                         return -EINVAL;
4107
4108                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4109                         return -EOPNOTSUPP;
4110
4111                 mumimo_groups =
4112                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4113
4114                 /* bits 0 and 63 are reserved and must be zero */
4115                 if ((mumimo_groups[0] & BIT(0)) ||
4116                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4117                         return -EINVAL;
4118
4119                 params->vht_mumimo_groups = mumimo_groups;
4120                 change = true;
4121         }
4122
4123         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4124                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4125
4126                 if (type != NL80211_IFTYPE_MONITOR)
4127                         return -EINVAL;
4128
4129                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4130                         return -EOPNOTSUPP;
4131
4132                 params->vht_mumimo_follow_addr =
4133                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4134                 change = true;
4135         }
4136
4137         return change ? 1 : 0;
4138 }
4139
4140 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4141                                struct net_device *netdev, u8 use_4addr,
4142                                enum nl80211_iftype iftype)
4143 {
4144         if (!use_4addr) {
4145                 if (netdev && netif_is_bridge_port(netdev))
4146                         return -EBUSY;
4147                 return 0;
4148         }
4149
4150         switch (iftype) {
4151         case NL80211_IFTYPE_AP_VLAN:
4152                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4153                         return 0;
4154                 break;
4155         case NL80211_IFTYPE_STATION:
4156                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4157                         return 0;
4158                 break;
4159         default:
4160                 break;
4161         }
4162
4163         return -EOPNOTSUPP;
4164 }
4165
4166 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4167 {
4168         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4169         struct vif_params params;
4170         int err;
4171         enum nl80211_iftype otype, ntype;
4172         struct net_device *dev = info->user_ptr[1];
4173         bool change = false;
4174
4175         memset(&params, 0, sizeof(params));
4176
4177         otype = ntype = dev->ieee80211_ptr->iftype;
4178
4179         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4180                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4181                 if (otype != ntype)
4182                         change = true;
4183         }
4184
4185         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4186                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4187
4188                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4189                         return -EINVAL;
4190                 if (netif_running(dev))
4191                         return -EBUSY;
4192
4193                 wdev_lock(wdev);
4194                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4195                              IEEE80211_MAX_MESH_ID_LEN);
4196                 wdev->u.mesh.id_up_len =
4197                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4198                 memcpy(wdev->u.mesh.id,
4199                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4200                        wdev->u.mesh.id_up_len);
4201                 wdev_unlock(wdev);
4202         }
4203
4204         if (info->attrs[NL80211_ATTR_4ADDR]) {
4205                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4206                 change = true;
4207                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4208                 if (err)
4209                         return err;
4210         } else {
4211                 params.use_4addr = -1;
4212         }
4213
4214         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4215         if (err < 0)
4216                 return err;
4217         if (err > 0)
4218                 change = true;
4219
4220         if (change)
4221                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4222         else
4223                 err = 0;
4224
4225         if (!err && params.use_4addr != -1)
4226                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4227
4228         if (change && !err) {
4229                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4230
4231                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4232         }
4233
4234         return err;
4235 }
4236
4237 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4238 {
4239         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4240         struct vif_params params;
4241         struct wireless_dev *wdev;
4242         struct sk_buff *msg;
4243         int err;
4244         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4245
4246         memset(&params, 0, sizeof(params));
4247
4248         if (!info->attrs[NL80211_ATTR_IFNAME])
4249                 return -EINVAL;
4250
4251         if (info->attrs[NL80211_ATTR_IFTYPE])
4252                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4253
4254         if (!rdev->ops->add_virtual_intf)
4255                 return -EOPNOTSUPP;
4256
4257         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4258              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4259             info->attrs[NL80211_ATTR_MAC]) {
4260                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4261                            ETH_ALEN);
4262                 if (!is_valid_ether_addr(params.macaddr))
4263                         return -EADDRNOTAVAIL;
4264         }
4265
4266         if (info->attrs[NL80211_ATTR_4ADDR]) {
4267                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4268                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4269                 if (err)
4270                         return err;
4271         }
4272
4273         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4274                 return -EOPNOTSUPP;
4275
4276         err = nl80211_parse_mon_options(rdev, type, info, &params);
4277         if (err < 0)
4278                 return err;
4279
4280         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4281         if (!msg)
4282                 return -ENOMEM;
4283
4284         wdev = rdev_add_virtual_intf(rdev,
4285                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4286                                 NET_NAME_USER, type, &params);
4287         if (WARN_ON(!wdev)) {
4288                 nlmsg_free(msg);
4289                 return -EPROTO;
4290         } else if (IS_ERR(wdev)) {
4291                 nlmsg_free(msg);
4292                 return PTR_ERR(wdev);
4293         }
4294
4295         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4296                 wdev->owner_nlportid = info->snd_portid;
4297
4298         switch (type) {
4299         case NL80211_IFTYPE_MESH_POINT:
4300                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4301                         break;
4302                 wdev_lock(wdev);
4303                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4304                              IEEE80211_MAX_MESH_ID_LEN);
4305                 wdev->u.mesh.id_up_len =
4306                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4307                 memcpy(wdev->u.mesh.id,
4308                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4309                        wdev->u.mesh.id_up_len);
4310                 wdev_unlock(wdev);
4311                 break;
4312         case NL80211_IFTYPE_NAN:
4313         case NL80211_IFTYPE_P2P_DEVICE:
4314                 /*
4315                  * P2P Device and NAN do not have a netdev, so don't go
4316                  * through the netdev notifier and must be added here
4317                  */
4318                 cfg80211_init_wdev(wdev);
4319                 cfg80211_register_wdev(rdev, wdev);
4320                 break;
4321         default:
4322                 break;
4323         }
4324
4325         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4326                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4327                 nlmsg_free(msg);
4328                 return -ENOBUFS;
4329         }
4330
4331         return genlmsg_reply(msg, info);
4332 }
4333
4334 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4335 {
4336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4337         int ret;
4338
4339         /* to avoid failing a new interface creation due to pending removal */
4340         cfg80211_destroy_ifaces(rdev);
4341
4342         wiphy_lock(&rdev->wiphy);
4343         ret = _nl80211_new_interface(skb, info);
4344         wiphy_unlock(&rdev->wiphy);
4345
4346         return ret;
4347 }
4348
4349 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4350 {
4351         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4352         struct wireless_dev *wdev = info->user_ptr[1];
4353
4354         if (!rdev->ops->del_virtual_intf)
4355                 return -EOPNOTSUPP;
4356
4357         /*
4358          * We hold RTNL, so this is safe, without RTNL opencount cannot
4359          * reach 0, and thus the rdev cannot be deleted.
4360          *
4361          * We need to do it for the dev_close(), since that will call
4362          * the netdev notifiers, and we need to acquire the mutex there
4363          * but don't know if we get there from here or from some other
4364          * place (e.g. "ip link set ... down").
4365          */
4366         mutex_unlock(&rdev->wiphy.mtx);
4367
4368         /*
4369          * If we remove a wireless device without a netdev then clear
4370          * user_ptr[1] so that nl80211_post_doit won't dereference it
4371          * to check if it needs to do dev_put(). Otherwise it crashes
4372          * since the wdev has been freed, unlike with a netdev where
4373          * we need the dev_put() for the netdev to really be freed.
4374          */
4375         if (!wdev->netdev)
4376                 info->user_ptr[1] = NULL;
4377         else
4378                 dev_close(wdev->netdev);
4379
4380         mutex_lock(&rdev->wiphy.mtx);
4381
4382         return cfg80211_remove_virtual_intf(rdev, wdev);
4383 }
4384
4385 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4386 {
4387         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4388         struct net_device *dev = info->user_ptr[1];
4389         u16 noack_map;
4390
4391         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4392                 return -EINVAL;
4393
4394         if (!rdev->ops->set_noack_map)
4395                 return -EOPNOTSUPP;
4396
4397         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4398
4399         return rdev_set_noack_map(rdev, dev, noack_map);
4400 }
4401
4402 static int nl80211_validate_key_link_id(struct genl_info *info,
4403                                         struct wireless_dev *wdev,
4404                                         int link_id, bool pairwise)
4405 {
4406         if (pairwise) {
4407                 if (link_id != -1) {
4408                         GENL_SET_ERR_MSG(info,
4409                                          "link ID not allowed for pairwise key");
4410                         return -EINVAL;
4411                 }
4412
4413                 return 0;
4414         }
4415
4416         if (wdev->valid_links) {
4417                 if (link_id == -1) {
4418                         GENL_SET_ERR_MSG(info,
4419                                          "link ID must for MLO group key");
4420                         return -EINVAL;
4421                 }
4422                 if (!(wdev->valid_links & BIT(link_id))) {
4423                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4424                         return -EINVAL;
4425                 }
4426         } else if (link_id != -1) {
4427                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4428                 return -EINVAL;
4429         }
4430
4431         return 0;
4432 }
4433
4434 struct get_key_cookie {
4435         struct sk_buff *msg;
4436         int error;
4437         int idx;
4438 };
4439
4440 static void get_key_callback(void *c, struct key_params *params)
4441 {
4442         struct nlattr *key;
4443         struct get_key_cookie *cookie = c;
4444
4445         if ((params->key &&
4446              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4447                      params->key_len, params->key)) ||
4448             (params->seq &&
4449              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4450                      params->seq_len, params->seq)) ||
4451             (params->cipher &&
4452              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4453                          params->cipher)))
4454                 goto nla_put_failure;
4455
4456         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4457         if (!key)
4458                 goto nla_put_failure;
4459
4460         if ((params->key &&
4461              nla_put(cookie->msg, NL80211_KEY_DATA,
4462                      params->key_len, params->key)) ||
4463             (params->seq &&
4464              nla_put(cookie->msg, NL80211_KEY_SEQ,
4465                      params->seq_len, params->seq)) ||
4466             (params->cipher &&
4467              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4468                          params->cipher)))
4469                 goto nla_put_failure;
4470
4471         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4472                 goto nla_put_failure;
4473
4474         nla_nest_end(cookie->msg, key);
4475
4476         return;
4477  nla_put_failure:
4478         cookie->error = 1;
4479 }
4480
4481 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4482 {
4483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4484         int err;
4485         struct net_device *dev = info->user_ptr[1];
4486         u8 key_idx = 0;
4487         const u8 *mac_addr = NULL;
4488         bool pairwise;
4489         struct get_key_cookie cookie = {
4490                 .error = 0,
4491         };
4492         void *hdr;
4493         struct sk_buff *msg;
4494         bool bigtk_support = false;
4495         int link_id = nl80211_link_id_or_invalid(info->attrs);
4496         struct wireless_dev *wdev = dev->ieee80211_ptr;
4497
4498         if (wiphy_ext_feature_isset(&rdev->wiphy,
4499                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4500                 bigtk_support = true;
4501
4502         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4503              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4504             wiphy_ext_feature_isset(&rdev->wiphy,
4505                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4506                 bigtk_support = true;
4507
4508         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4509                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4510
4511                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4512                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4513                         return -EINVAL;
4514                 }
4515         }
4516
4517         if (info->attrs[NL80211_ATTR_MAC])
4518                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4519
4520         pairwise = !!mac_addr;
4521         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4522                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4523
4524                 if (kt != NL80211_KEYTYPE_GROUP &&
4525                     kt != NL80211_KEYTYPE_PAIRWISE)
4526                         return -EINVAL;
4527                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4528         }
4529
4530         if (!rdev->ops->get_key)
4531                 return -EOPNOTSUPP;
4532
4533         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4534                 return -ENOENT;
4535
4536         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4537         if (!msg)
4538                 return -ENOMEM;
4539
4540         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4541                              NL80211_CMD_NEW_KEY);
4542         if (!hdr)
4543                 goto nla_put_failure;
4544
4545         cookie.msg = msg;
4546         cookie.idx = key_idx;
4547
4548         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4549             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4550                 goto nla_put_failure;
4551         if (mac_addr &&
4552             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4553                 goto nla_put_failure;
4554
4555         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4556         if (err)
4557                 goto free_msg;
4558
4559         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4560                            &cookie, get_key_callback);
4561
4562         if (err)
4563                 goto free_msg;
4564
4565         if (cookie.error)
4566                 goto nla_put_failure;
4567
4568         genlmsg_end(msg, hdr);
4569         return genlmsg_reply(msg, info);
4570
4571  nla_put_failure:
4572         err = -ENOBUFS;
4573  free_msg:
4574         nlmsg_free(msg);
4575         return err;
4576 }
4577
4578 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4579 {
4580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4581         struct key_parse key;
4582         int err;
4583         struct net_device *dev = info->user_ptr[1];
4584         int link_id = nl80211_link_id_or_invalid(info->attrs);
4585         struct wireless_dev *wdev = dev->ieee80211_ptr;
4586
4587         err = nl80211_parse_key(info, &key);
4588         if (err)
4589                 return err;
4590
4591         if (key.idx < 0)
4592                 return -EINVAL;
4593
4594         /* Only support setting default key and
4595          * Extended Key ID action NL80211_KEY_SET_TX.
4596          */
4597         if (!key.def && !key.defmgmt && !key.defbeacon &&
4598             !(key.p.mode == NL80211_KEY_SET_TX))
4599                 return -EINVAL;
4600
4601         wdev_lock(wdev);
4602
4603         if (key.def) {
4604                 if (!rdev->ops->set_default_key) {
4605                         err = -EOPNOTSUPP;
4606                         goto out;
4607                 }
4608
4609                 err = nl80211_key_allowed(wdev);
4610                 if (err)
4611                         goto out;
4612
4613                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4614                 if (err)
4615                         goto out;
4616
4617                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4618                                            key.def_uni, key.def_multi);
4619
4620                 if (err)
4621                         goto out;
4622
4623 #ifdef CONFIG_CFG80211_WEXT
4624                 wdev->wext.default_key = key.idx;
4625 #endif
4626         } else if (key.defmgmt) {
4627                 if (key.def_uni || !key.def_multi) {
4628                         err = -EINVAL;
4629                         goto out;
4630                 }
4631
4632                 if (!rdev->ops->set_default_mgmt_key) {
4633                         err = -EOPNOTSUPP;
4634                         goto out;
4635                 }
4636
4637                 err = nl80211_key_allowed(wdev);
4638                 if (err)
4639                         goto out;
4640
4641                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4642                 if (err)
4643                         goto out;
4644
4645                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4646                 if (err)
4647                         goto out;
4648
4649 #ifdef CONFIG_CFG80211_WEXT
4650                 wdev->wext.default_mgmt_key = key.idx;
4651 #endif
4652         } else if (key.defbeacon) {
4653                 if (key.def_uni || !key.def_multi) {
4654                         err = -EINVAL;
4655                         goto out;
4656                 }
4657
4658                 if (!rdev->ops->set_default_beacon_key) {
4659                         err = -EOPNOTSUPP;
4660                         goto out;
4661                 }
4662
4663                 err = nl80211_key_allowed(wdev);
4664                 if (err)
4665                         goto out;
4666
4667                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4668                 if (err)
4669                         goto out;
4670
4671                 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4672                 if (err)
4673                         goto out;
4674         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4675                    wiphy_ext_feature_isset(&rdev->wiphy,
4676                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4677                 u8 *mac_addr = NULL;
4678
4679                 if (info->attrs[NL80211_ATTR_MAC])
4680                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4681
4682                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4683                         err = -EINVAL;
4684                         goto out;
4685                 }
4686
4687                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4688                 if (err)
4689                         goto out;
4690
4691                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4692                                    NL80211_KEYTYPE_PAIRWISE,
4693                                    mac_addr, &key.p);
4694         } else {
4695                 err = -EINVAL;
4696         }
4697  out:
4698         wdev_unlock(wdev);
4699
4700         return err;
4701 }
4702
4703 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4704 {
4705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4706         int err;
4707         struct net_device *dev = info->user_ptr[1];
4708         struct key_parse key;
4709         const u8 *mac_addr = NULL;
4710         int link_id = nl80211_link_id_or_invalid(info->attrs);
4711         struct wireless_dev *wdev = dev->ieee80211_ptr;
4712
4713         err = nl80211_parse_key(info, &key);
4714         if (err)
4715                 return err;
4716
4717         if (!key.p.key) {
4718                 GENL_SET_ERR_MSG(info, "no key");
4719                 return -EINVAL;
4720         }
4721
4722         if (info->attrs[NL80211_ATTR_MAC])
4723                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4724
4725         if (key.type == -1) {
4726                 if (mac_addr)
4727                         key.type = NL80211_KEYTYPE_PAIRWISE;
4728                 else
4729                         key.type = NL80211_KEYTYPE_GROUP;
4730         }
4731
4732         /* for now */
4733         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4734             key.type != NL80211_KEYTYPE_GROUP) {
4735                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4736                 return -EINVAL;
4737         }
4738
4739         if (key.type == NL80211_KEYTYPE_GROUP &&
4740             info->attrs[NL80211_ATTR_VLAN_ID])
4741                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4742
4743         if (!rdev->ops->add_key)
4744                 return -EOPNOTSUPP;
4745
4746         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4747                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4748                                            mac_addr)) {
4749                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4750                 return -EINVAL;
4751         }
4752
4753         wdev_lock(wdev);
4754         err = nl80211_key_allowed(wdev);
4755         if (err)
4756                 GENL_SET_ERR_MSG(info, "key not allowed");
4757
4758         if (!err)
4759                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4760                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4761
4762         if (!err) {
4763                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4764                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4765                                     mac_addr, &key.p);
4766                 if (err)
4767                         GENL_SET_ERR_MSG(info, "key addition failed");
4768         }
4769         wdev_unlock(wdev);
4770
4771         return err;
4772 }
4773
4774 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4775 {
4776         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4777         int err;
4778         struct net_device *dev = info->user_ptr[1];
4779         u8 *mac_addr = NULL;
4780         struct key_parse key;
4781         int link_id = nl80211_link_id_or_invalid(info->attrs);
4782         struct wireless_dev *wdev = dev->ieee80211_ptr;
4783
4784         err = nl80211_parse_key(info, &key);
4785         if (err)
4786                 return err;
4787
4788         if (info->attrs[NL80211_ATTR_MAC])
4789                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4790
4791         if (key.type == -1) {
4792                 if (mac_addr)
4793                         key.type = NL80211_KEYTYPE_PAIRWISE;
4794                 else
4795                         key.type = NL80211_KEYTYPE_GROUP;
4796         }
4797
4798         /* for now */
4799         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4800             key.type != NL80211_KEYTYPE_GROUP)
4801                 return -EINVAL;
4802
4803         if (!cfg80211_valid_key_idx(rdev, key.idx,
4804                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4805                 return -EINVAL;
4806
4807         if (!rdev->ops->del_key)
4808                 return -EOPNOTSUPP;
4809
4810         wdev_lock(wdev);
4811         err = nl80211_key_allowed(wdev);
4812
4813         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4814             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4815                 err = -ENOENT;
4816
4817         if (!err)
4818                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4819                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4820
4821         if (!err)
4822                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4823                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4824                                    mac_addr);
4825
4826 #ifdef CONFIG_CFG80211_WEXT
4827         if (!err) {
4828                 if (key.idx == wdev->wext.default_key)
4829                         wdev->wext.default_key = -1;
4830                 else if (key.idx == wdev->wext.default_mgmt_key)
4831                         wdev->wext.default_mgmt_key = -1;
4832         }
4833 #endif
4834         wdev_unlock(wdev);
4835
4836         return err;
4837 }
4838
4839 /* This function returns an error or the number of nested attributes */
4840 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4841 {
4842         struct nlattr *attr;
4843         int n_entries = 0, tmp;
4844
4845         nla_for_each_nested(attr, nl_attr, tmp) {
4846                 if (nla_len(attr) != ETH_ALEN)
4847                         return -EINVAL;
4848
4849                 n_entries++;
4850         }
4851
4852         return n_entries;
4853 }
4854
4855 /*
4856  * This function parses ACL information and allocates memory for ACL data.
4857  * On successful return, the calling function is responsible to free the
4858  * ACL buffer returned by this function.
4859  */
4860 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4861                                                 struct genl_info *info)
4862 {
4863         enum nl80211_acl_policy acl_policy;
4864         struct nlattr *attr;
4865         struct cfg80211_acl_data *acl;
4866         int i = 0, n_entries, tmp;
4867
4868         if (!wiphy->max_acl_mac_addrs)
4869                 return ERR_PTR(-EOPNOTSUPP);
4870
4871         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4872                 return ERR_PTR(-EINVAL);
4873
4874         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4875         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4876             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4877                 return ERR_PTR(-EINVAL);
4878
4879         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4880                 return ERR_PTR(-EINVAL);
4881
4882         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4883         if (n_entries < 0)
4884                 return ERR_PTR(n_entries);
4885
4886         if (n_entries > wiphy->max_acl_mac_addrs)
4887                 return ERR_PTR(-ENOTSUPP);
4888
4889         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4890         if (!acl)
4891                 return ERR_PTR(-ENOMEM);
4892         acl->n_acl_entries = n_entries;
4893
4894         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4895                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4896                 i++;
4897         }
4898         acl->acl_policy = acl_policy;
4899
4900         return acl;
4901 }
4902
4903 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4904 {
4905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4906         struct net_device *dev = info->user_ptr[1];
4907         struct cfg80211_acl_data *acl;
4908         int err;
4909
4910         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4911             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4912                 return -EOPNOTSUPP;
4913
4914         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4915                 return -EINVAL;
4916
4917         acl = parse_acl_data(&rdev->wiphy, info);
4918         if (IS_ERR(acl))
4919                 return PTR_ERR(acl);
4920
4921         err = rdev_set_mac_acl(rdev, dev, acl);
4922
4923         kfree(acl);
4924
4925         return err;
4926 }
4927
4928 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4929                            u8 *rates, u8 rates_len)
4930 {
4931         u8 i;
4932         u32 mask = 0;
4933
4934         for (i = 0; i < rates_len; i++) {
4935                 int rate = (rates[i] & 0x7f) * 5;
4936                 int ridx;
4937
4938                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4939                         struct ieee80211_rate *srate =
4940                                 &sband->bitrates[ridx];
4941                         if (rate == srate->bitrate) {
4942                                 mask |= 1 << ridx;
4943                                 break;
4944                         }
4945                 }
4946                 if (ridx == sband->n_bitrates)
4947                         return 0; /* rate not found */
4948         }
4949
4950         return mask;
4951 }
4952
4953 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4954                                u8 *rates, u8 rates_len,
4955                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4956 {
4957         u8 i;
4958
4959         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4960
4961         for (i = 0; i < rates_len; i++) {
4962                 int ridx, rbit;
4963
4964                 ridx = rates[i] / 8;
4965                 rbit = BIT(rates[i] % 8);
4966
4967                 /* check validity */
4968                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4969                         return false;
4970
4971                 /* check availability */
4972                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4973                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4974                         mcs[ridx] |= rbit;
4975                 else
4976                         return false;
4977         }
4978
4979         return true;
4980 }
4981
4982 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4983 {
4984         u16 mcs_mask = 0;
4985
4986         switch (vht_mcs_map) {
4987         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4988                 break;
4989         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4990                 mcs_mask = 0x00FF;
4991                 break;
4992         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4993                 mcs_mask = 0x01FF;
4994                 break;
4995         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4996                 mcs_mask = 0x03FF;
4997                 break;
4998         default:
4999                 break;
5000         }
5001
5002         return mcs_mask;
5003 }
5004
5005 static void vht_build_mcs_mask(u16 vht_mcs_map,
5006                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
5007 {
5008         u8 nss;
5009
5010         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
5011                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
5012                 vht_mcs_map >>= 2;
5013         }
5014 }
5015
5016 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5017                              struct nl80211_txrate_vht *txrate,
5018                              u16 mcs[NL80211_VHT_NSS_MAX])
5019 {
5020         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5021         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5022         u8 i;
5023
5024         if (!sband->vht_cap.vht_supported)
5025                 return false;
5026
5027         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5028
5029         /* Build vht_mcs_mask from VHT capabilities */
5030         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5031
5032         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5033                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5034                         mcs[i] = txrate->mcs[i];
5035                 else
5036                         return false;
5037         }
5038
5039         return true;
5040 }
5041
5042 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5043 {
5044         switch (he_mcs_map) {
5045         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5046                 return 0;
5047         case IEEE80211_HE_MCS_SUPPORT_0_7:
5048                 return 0x00FF;
5049         case IEEE80211_HE_MCS_SUPPORT_0_9:
5050                 return 0x03FF;
5051         case IEEE80211_HE_MCS_SUPPORT_0_11:
5052                 return 0xFFF;
5053         default:
5054                 break;
5055         }
5056         return 0;
5057 }
5058
5059 static void he_build_mcs_mask(u16 he_mcs_map,
5060                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5061 {
5062         u8 nss;
5063
5064         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5065                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5066                 he_mcs_map >>= 2;
5067         }
5068 }
5069
5070 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5071                            const struct ieee80211_sta_he_cap *he_cap)
5072 {
5073         struct net_device *dev = info->user_ptr[1];
5074         struct wireless_dev *wdev = dev->ieee80211_ptr;
5075         struct cfg80211_chan_def *chandef;
5076         __le16 tx_mcs;
5077
5078         chandef = wdev_chandef(wdev, link_id);
5079         if (!chandef) {
5080                 /*
5081                  * This is probably broken, but we never maintained
5082                  * a chandef in these cases, so it always was.
5083                  */
5084                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5085         }
5086
5087         switch (chandef->width) {
5088         case NL80211_CHAN_WIDTH_80P80:
5089                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5090                 break;
5091         case NL80211_CHAN_WIDTH_160:
5092                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5093                 break;
5094         default:
5095                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5096                 break;
5097         }
5098
5099         return le16_to_cpu(tx_mcs);
5100 }
5101
5102 static bool he_set_mcs_mask(struct genl_info *info,
5103                             struct wireless_dev *wdev,
5104                             struct ieee80211_supported_band *sband,
5105                             struct nl80211_txrate_he *txrate,
5106                             u16 mcs[NL80211_HE_NSS_MAX],
5107                             unsigned int link_id)
5108 {
5109         const struct ieee80211_sta_he_cap *he_cap;
5110         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5111         u16 tx_mcs_map = 0;
5112         u8 i;
5113
5114         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5115         if (!he_cap)
5116                 return false;
5117
5118         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5119
5120         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5121
5122         /* Build he_mcs_mask from HE capabilities */
5123         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5124
5125         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5126                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5127                         mcs[i] = txrate->mcs[i];
5128                 else
5129                         return false;
5130         }
5131
5132         return true;
5133 }
5134
5135 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5136                                          struct nlattr *attrs[],
5137                                          enum nl80211_attrs attr,
5138                                          struct cfg80211_bitrate_mask *mask,
5139                                          struct net_device *dev,
5140                                          bool default_all_enabled,
5141                                          unsigned int link_id)
5142 {
5143         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5145         struct wireless_dev *wdev = dev->ieee80211_ptr;
5146         int rem, i;
5147         struct nlattr *tx_rates;
5148         struct ieee80211_supported_band *sband;
5149         u16 vht_tx_mcs_map, he_tx_mcs_map;
5150
5151         memset(mask, 0, sizeof(*mask));
5152         /* Default to all rates enabled */
5153         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5154                 const struct ieee80211_sta_he_cap *he_cap;
5155
5156                 if (!default_all_enabled)
5157                         break;
5158
5159                 sband = rdev->wiphy.bands[i];
5160
5161                 if (!sband)
5162                         continue;
5163
5164                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5165                 memcpy(mask->control[i].ht_mcs,
5166                        sband->ht_cap.mcs.rx_mask,
5167                        sizeof(mask->control[i].ht_mcs));
5168
5169                 if (sband->vht_cap.vht_supported) {
5170                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5171                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5172                 }
5173
5174                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5175                 if (!he_cap)
5176                         continue;
5177
5178                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5179                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5180
5181                 mask->control[i].he_gi = 0xFF;
5182                 mask->control[i].he_ltf = 0xFF;
5183         }
5184
5185         /* if no rates are given set it back to the defaults */
5186         if (!attrs[attr])
5187                 goto out;
5188
5189         /* The nested attribute uses enum nl80211_band as the index. This maps
5190          * directly to the enum nl80211_band values used in cfg80211.
5191          */
5192         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5193         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5194                 enum nl80211_band band = nla_type(tx_rates);
5195                 int err;
5196
5197                 if (band < 0 || band >= NUM_NL80211_BANDS)
5198                         return -EINVAL;
5199                 sband = rdev->wiphy.bands[band];
5200                 if (sband == NULL)
5201                         return -EINVAL;
5202                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5203                                                   tx_rates,
5204                                                   nl80211_txattr_policy,
5205                                                   info->extack);
5206                 if (err)
5207                         return err;
5208                 if (tb[NL80211_TXRATE_LEGACY]) {
5209                         mask->control[band].legacy = rateset_to_mask(
5210                                 sband,
5211                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5212                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5213                         if ((mask->control[band].legacy == 0) &&
5214                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5215                                 return -EINVAL;
5216                 }
5217                 if (tb[NL80211_TXRATE_HT]) {
5218                         if (!ht_rateset_to_mask(
5219                                         sband,
5220                                         nla_data(tb[NL80211_TXRATE_HT]),
5221                                         nla_len(tb[NL80211_TXRATE_HT]),
5222                                         mask->control[band].ht_mcs))
5223                                 return -EINVAL;
5224                 }
5225
5226                 if (tb[NL80211_TXRATE_VHT]) {
5227                         if (!vht_set_mcs_mask(
5228                                         sband,
5229                                         nla_data(tb[NL80211_TXRATE_VHT]),
5230                                         mask->control[band].vht_mcs))
5231                                 return -EINVAL;
5232                 }
5233
5234                 if (tb[NL80211_TXRATE_GI]) {
5235                         mask->control[band].gi =
5236                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5237                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5238                                 return -EINVAL;
5239                 }
5240                 if (tb[NL80211_TXRATE_HE] &&
5241                     !he_set_mcs_mask(info, wdev, sband,
5242                                      nla_data(tb[NL80211_TXRATE_HE]),
5243                                      mask->control[band].he_mcs,
5244                                      link_id))
5245                         return -EINVAL;
5246
5247                 if (tb[NL80211_TXRATE_HE_GI])
5248                         mask->control[band].he_gi =
5249                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5250                 if (tb[NL80211_TXRATE_HE_LTF])
5251                         mask->control[band].he_ltf =
5252                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5253
5254                 if (mask->control[band].legacy == 0) {
5255                         /* don't allow empty legacy rates if HT, VHT or HE
5256                          * are not even supported.
5257                          */
5258                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5259                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5260                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5261                                 return -EINVAL;
5262
5263                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5264                                 if (mask->control[band].ht_mcs[i])
5265                                         goto out;
5266
5267                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5268                                 if (mask->control[band].vht_mcs[i])
5269                                         goto out;
5270
5271                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5272                                 if (mask->control[band].he_mcs[i])
5273                                         goto out;
5274
5275                         /* legacy and mcs rates may not be both empty */
5276                         return -EINVAL;
5277                 }
5278         }
5279
5280 out:
5281         return 0;
5282 }
5283
5284 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5285                                    enum nl80211_band band,
5286                                    struct cfg80211_bitrate_mask *beacon_rate)
5287 {
5288         u32 count_ht, count_vht, count_he, i;
5289         u32 rate = beacon_rate->control[band].legacy;
5290
5291         /* Allow only one rate */
5292         if (hweight32(rate) > 1)
5293                 return -EINVAL;
5294
5295         count_ht = 0;
5296         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5297                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5298                         return -EINVAL;
5299                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5300                         count_ht++;
5301                         if (count_ht > 1)
5302                                 return -EINVAL;
5303                 }
5304                 if (count_ht && rate)
5305                         return -EINVAL;
5306         }
5307
5308         count_vht = 0;
5309         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5310                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5311                         return -EINVAL;
5312                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5313                         count_vht++;
5314                         if (count_vht > 1)
5315                                 return -EINVAL;
5316                 }
5317                 if (count_vht && rate)
5318                         return -EINVAL;
5319         }
5320
5321         count_he = 0;
5322         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5323                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5324                         return -EINVAL;
5325                 } else if (beacon_rate->control[band].he_mcs[i]) {
5326                         count_he++;
5327                         if (count_he > 1)
5328                                 return -EINVAL;
5329                 }
5330                 if (count_he && rate)
5331                         return -EINVAL;
5332         }
5333
5334         if ((count_ht && count_vht && count_he) ||
5335             (!rate && !count_ht && !count_vht && !count_he))
5336                 return -EINVAL;
5337
5338         if (rate &&
5339             !wiphy_ext_feature_isset(&rdev->wiphy,
5340                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5341                 return -EINVAL;
5342         if (count_ht &&
5343             !wiphy_ext_feature_isset(&rdev->wiphy,
5344                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5345                 return -EINVAL;
5346         if (count_vht &&
5347             !wiphy_ext_feature_isset(&rdev->wiphy,
5348                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5349                 return -EINVAL;
5350         if (count_he &&
5351             !wiphy_ext_feature_isset(&rdev->wiphy,
5352                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5353                 return -EINVAL;
5354
5355         return 0;
5356 }
5357
5358 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5359                                        struct net_device *dev,
5360                                        struct nlattr *attrs,
5361                                        struct cfg80211_mbssid_config *config,
5362                                        u8 num_elems)
5363 {
5364         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5365
5366         if (!wiphy->mbssid_max_interfaces)
5367                 return -EOPNOTSUPP;
5368
5369         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5370                              NULL) ||
5371             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5372                 return -EINVAL;
5373
5374         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5375         if (config->ema) {
5376                 if (!wiphy->ema_max_profile_periodicity)
5377                         return -EOPNOTSUPP;
5378
5379                 if (num_elems > wiphy->ema_max_profile_periodicity)
5380                         return -EINVAL;
5381         }
5382
5383         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5384         if (config->index >= wiphy->mbssid_max_interfaces ||
5385             (!config->index && !num_elems))
5386                 return -EINVAL;
5387
5388         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5389                 u32 tx_ifindex =
5390                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5391
5392                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5393                     (config->index && tx_ifindex == dev->ifindex))
5394                         return -EINVAL;
5395
5396                 if (tx_ifindex != dev->ifindex) {
5397                         struct net_device *tx_netdev =
5398                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5399
5400                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5401                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5402                             tx_netdev->ieee80211_ptr->iftype !=
5403                                                         NL80211_IFTYPE_AP) {
5404                                 dev_put(tx_netdev);
5405                                 return -EINVAL;
5406                         }
5407
5408                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5409                 } else {
5410                         config->tx_wdev = dev->ieee80211_ptr;
5411                 }
5412         } else if (!config->index) {
5413                 config->tx_wdev = dev->ieee80211_ptr;
5414         } else {
5415                 return -EINVAL;
5416         }
5417
5418         return 0;
5419 }
5420
5421 static struct cfg80211_mbssid_elems *
5422 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5423 {
5424         struct nlattr *nl_elems;
5425         struct cfg80211_mbssid_elems *elems;
5426         int rem_elems;
5427         u8 i = 0, num_elems = 0;
5428
5429         if (!wiphy->mbssid_max_interfaces)
5430                 return ERR_PTR(-EINVAL);
5431
5432         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5433                 if (num_elems >= 255)
5434                         return ERR_PTR(-EINVAL);
5435                 num_elems++;
5436         }
5437
5438         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5439         if (!elems)
5440                 return ERR_PTR(-ENOMEM);
5441         elems->cnt = num_elems;
5442
5443         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5444                 elems->elem[i].data = nla_data(nl_elems);
5445                 elems->elem[i].len = nla_len(nl_elems);
5446                 i++;
5447         }
5448         return elems;
5449 }
5450
5451 static struct cfg80211_rnr_elems *
5452 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5453                         struct netlink_ext_ack *extack)
5454 {
5455         struct nlattr *nl_elems;
5456         struct cfg80211_rnr_elems *elems;
5457         int rem_elems;
5458         u8 i = 0, num_elems = 0;
5459
5460         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5461                 int ret;
5462
5463                 ret = validate_ie_attr(nl_elems, extack);
5464                 if (ret)
5465                         return ERR_PTR(ret);
5466
5467                 num_elems++;
5468         }
5469
5470         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5471         if (!elems)
5472                 return ERR_PTR(-ENOMEM);
5473
5474         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5475                 elems->elem[i].data = nla_data(nl_elems);
5476                 elems->elem[i].len = nla_len(nl_elems);
5477                 i++;
5478         }
5479         elems->cnt = num_elems;
5480         return elems;
5481 }
5482
5483 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5484                                       struct cfg80211_he_bss_color *he_bss_color)
5485 {
5486         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5487         int err;
5488
5489         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5490                                he_bss_color_policy, NULL);
5491         if (err)
5492                 return err;
5493
5494         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5495                 return -EINVAL;
5496
5497         he_bss_color->color =
5498                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5499         he_bss_color->enabled =
5500                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5501         he_bss_color->partial =
5502                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5503
5504         return 0;
5505 }
5506
5507 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5508                                 struct nlattr *attrs[],
5509                                 struct cfg80211_beacon_data *bcn,
5510                                 struct netlink_ext_ack *extack)
5511 {
5512         bool haveinfo = false;
5513         int err;
5514
5515         memset(bcn, 0, sizeof(*bcn));
5516
5517         bcn->link_id = nl80211_link_id(attrs);
5518
5519         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5520                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5521                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5522                 if (!bcn->head_len)
5523                         return -EINVAL;
5524                 haveinfo = true;
5525         }
5526
5527         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5528                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5529                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5530                 haveinfo = true;
5531         }
5532
5533         if (!haveinfo)
5534                 return -EINVAL;
5535
5536         if (attrs[NL80211_ATTR_IE]) {
5537                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5538                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5539         }
5540
5541         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5542                 bcn->proberesp_ies =
5543                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5544                 bcn->proberesp_ies_len =
5545                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5546         }
5547
5548         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5549                 bcn->assocresp_ies =
5550                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5551                 bcn->assocresp_ies_len =
5552                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5553         }
5554
5555         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5556                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5557                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5558         }
5559
5560         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5561                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5562
5563                 err = nla_parse_nested_deprecated(tb,
5564                                                   NL80211_FTM_RESP_ATTR_MAX,
5565                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5566                                                   NULL, NULL);
5567                 if (err)
5568                         return err;
5569
5570                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5571                     wiphy_ext_feature_isset(&rdev->wiphy,
5572                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5573                         bcn->ftm_responder = 1;
5574                 else
5575                         return -EOPNOTSUPP;
5576
5577                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5578                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5579                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5580                 }
5581
5582                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5583                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5584                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5585                 }
5586         } else {
5587                 bcn->ftm_responder = -1;
5588         }
5589
5590         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5591                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5592                                                  &bcn->he_bss_color);
5593                 if (err)
5594                         return err;
5595                 bcn->he_bss_color_valid = true;
5596         }
5597
5598         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5599                 struct cfg80211_mbssid_elems *mbssid =
5600                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5601                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5602
5603                 if (IS_ERR(mbssid))
5604                         return PTR_ERR(mbssid);
5605
5606                 bcn->mbssid_ies = mbssid;
5607
5608                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5609                         struct cfg80211_rnr_elems *rnr =
5610                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5611                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5612                                                         extack);
5613
5614                         if (IS_ERR(rnr))
5615                                 return PTR_ERR(rnr);
5616
5617                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5618                                 return -EINVAL;
5619
5620                         bcn->rnr_ies = rnr;
5621                 }
5622         }
5623
5624         return 0;
5625 }
5626
5627 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5628                                     struct ieee80211_he_obss_pd *he_obss_pd)
5629 {
5630         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5631         int err;
5632
5633         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5634                                he_obss_pd_policy, NULL);
5635         if (err)
5636                 return err;
5637
5638         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5639                 return -EINVAL;
5640
5641         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5642
5643         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5644                 he_obss_pd->min_offset =
5645                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5646         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5647                 he_obss_pd->max_offset =
5648                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5649         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5650                 he_obss_pd->non_srg_max_offset =
5651                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5652
5653         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5654                 return -EINVAL;
5655
5656         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5657                 memcpy(he_obss_pd->bss_color_bitmap,
5658                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5659                        sizeof(he_obss_pd->bss_color_bitmap));
5660
5661         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5662                 memcpy(he_obss_pd->partial_bssid_bitmap,
5663                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5664                        sizeof(he_obss_pd->partial_bssid_bitmap));
5665
5666         he_obss_pd->enable = true;
5667
5668         return 0;
5669 }
5670
5671 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5672                                         struct nlattr *attrs,
5673                                         struct cfg80211_ap_settings *params)
5674 {
5675         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5676         int ret;
5677         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5678
5679         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5680                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5681                 return -EINVAL;
5682
5683         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5684                                NULL, NULL);
5685         if (ret)
5686                 return ret;
5687
5688         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5689             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5690             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5691                 return -EINVAL;
5692
5693         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5694         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5695         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5696         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5697
5698         return 0;
5699 }
5700
5701 static int
5702 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5703                                      struct nlattr *attrs,
5704                                      struct cfg80211_ap_settings *params)
5705 {
5706         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5707         int ret;
5708         struct cfg80211_unsol_bcast_probe_resp *presp =
5709                                         &params->unsol_bcast_probe_resp;
5710
5711         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5712                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5713                 return -EINVAL;
5714
5715         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5716                                attrs, NULL, NULL);
5717         if (ret)
5718                 return ret;
5719
5720         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5721             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5722                 return -EINVAL;
5723
5724         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5725         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5726         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5727         return 0;
5728 }
5729
5730 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5731                                             const struct element *rates)
5732 {
5733         int i;
5734
5735         if (!rates)
5736                 return;
5737
5738         for (i = 0; i < rates->datalen; i++) {
5739                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5740                         params->ht_required = true;
5741                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5742                         params->vht_required = true;
5743                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5744                         params->he_required = true;
5745                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5746                         params->sae_h2e_required = true;
5747         }
5748 }
5749
5750 /*
5751  * Since the nl80211 API didn't include, from the beginning, attributes about
5752  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5753  * benefit of drivers that rebuild IEs in the firmware.
5754  */
5755 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5756 {
5757         const struct cfg80211_beacon_data *bcn = &params->beacon;
5758         size_t ies_len = bcn->tail_len;
5759         const u8 *ies = bcn->tail;
5760         const struct element *rates;
5761         const struct element *cap;
5762
5763         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5764         nl80211_check_ap_rate_selectors(params, rates);
5765
5766         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5767         nl80211_check_ap_rate_selectors(params, rates);
5768
5769         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5770         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5771                 params->ht_cap = (void *)cap->data;
5772         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5773         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5774                 params->vht_cap = (void *)cap->data;
5775         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5776         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5777                 params->he_cap = (void *)(cap->data + 1);
5778         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5779         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5780                 params->he_oper = (void *)(cap->data + 1);
5781         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5782         if (cap) {
5783                 if (!cap->datalen)
5784                         return -EINVAL;
5785                 params->eht_cap = (void *)(cap->data + 1);
5786                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5787                                                 (const u8 *)params->eht_cap,
5788                                                 cap->datalen - 1, true))
5789                         return -EINVAL;
5790         }
5791         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5792         if (cap) {
5793                 if (!cap->datalen)
5794                         return -EINVAL;
5795                 params->eht_oper = (void *)(cap->data + 1);
5796                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5797                                                 cap->datalen - 1))
5798                         return -EINVAL;
5799         }
5800         return 0;
5801 }
5802
5803 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5804                                    struct cfg80211_ap_settings *params)
5805 {
5806         struct wireless_dev *wdev;
5807
5808         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5809                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5810                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5811                         continue;
5812
5813                 if (!wdev->u.ap.preset_chandef.chan)
5814                         continue;
5815
5816                 params->chandef = wdev->u.ap.preset_chandef;
5817                 return true;
5818         }
5819
5820         return false;
5821 }
5822
5823 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5824                                     enum nl80211_auth_type auth_type,
5825                                     enum nl80211_commands cmd)
5826 {
5827         if (auth_type > NL80211_AUTHTYPE_MAX)
5828                 return false;
5829
5830         switch (cmd) {
5831         case NL80211_CMD_AUTHENTICATE:
5832                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5833                     auth_type == NL80211_AUTHTYPE_SAE)
5834                         return false;
5835                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5836                                              NL80211_EXT_FEATURE_FILS_STA) &&
5837                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5838                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5839                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5840                         return false;
5841                 return true;
5842         case NL80211_CMD_CONNECT:
5843                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5844                     !wiphy_ext_feature_isset(&rdev->wiphy,
5845                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5846                     auth_type == NL80211_AUTHTYPE_SAE)
5847                         return false;
5848
5849                 /* FILS with SK PFS or PK not supported yet */
5850                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5851                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5852                         return false;
5853                 if (!wiphy_ext_feature_isset(
5854                             &rdev->wiphy,
5855                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5856                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5857                         return false;
5858                 return true;
5859         case NL80211_CMD_START_AP:
5860                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5861                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5862                     auth_type == NL80211_AUTHTYPE_SAE)
5863                         return false;
5864                 /* FILS not supported yet */
5865                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5866                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5867                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5868                         return false;
5869                 return true;
5870         default:
5871                 return false;
5872         }
5873 }
5874
5875 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5876                                     unsigned int link_id)
5877 {
5878         struct wiphy *wiphy = wdev->wiphy;
5879         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5880         struct sk_buff *msg;
5881         void *hdr;
5882
5883         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5884         if (!msg)
5885                 return;
5886
5887         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5888         if (!hdr)
5889                 goto out;
5890
5891         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5892             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5893             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5894                               NL80211_ATTR_PAD) ||
5895             (wdev->u.ap.ssid_len &&
5896              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5897                      wdev->u.ap.ssid)) ||
5898             (wdev->valid_links &&
5899              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5900                 goto out;
5901
5902         genlmsg_end(msg, hdr);
5903
5904         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5905                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5906         return;
5907 out:
5908         nlmsg_free(msg);
5909 }
5910
5911 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5912 {
5913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5914         unsigned int link_id = nl80211_link_id(info->attrs);
5915         struct net_device *dev = info->user_ptr[1];
5916         struct wireless_dev *wdev = dev->ieee80211_ptr;
5917         struct cfg80211_ap_settings *params;
5918         int err;
5919
5920         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5921             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5922                 return -EOPNOTSUPP;
5923
5924         if (!rdev->ops->start_ap)
5925                 return -EOPNOTSUPP;
5926
5927         if (wdev->links[link_id].ap.beacon_interval)
5928                 return -EALREADY;
5929
5930         /* these are required for START_AP */
5931         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5932             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5933             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5934                 return -EINVAL;
5935
5936         params = kzalloc(sizeof(*params), GFP_KERNEL);
5937         if (!params)
5938                 return -ENOMEM;
5939
5940         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5941                                    info->extack);
5942         if (err)
5943                 goto out;
5944
5945         params->beacon_interval =
5946                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5947         params->dtim_period =
5948                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5949
5950         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5951                                            params->beacon_interval);
5952         if (err)
5953                 goto out;
5954
5955         /*
5956          * In theory, some of these attributes should be required here
5957          * but since they were not used when the command was originally
5958          * added, keep them optional for old user space programs to let
5959          * them continue to work with drivers that do not need the
5960          * additional information -- drivers must check!
5961          */
5962         if (info->attrs[NL80211_ATTR_SSID]) {
5963                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5964                 params->ssid_len =
5965                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5966                 if (params->ssid_len == 0) {
5967                         err = -EINVAL;
5968                         goto out;
5969                 }
5970
5971                 if (wdev->u.ap.ssid_len &&
5972                     (wdev->u.ap.ssid_len != params->ssid_len ||
5973                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5974                         /* require identical SSID for MLO */
5975                         err = -EINVAL;
5976                         goto out;
5977                 }
5978         } else if (wdev->valid_links) {
5979                 /* require SSID for MLO */
5980                 err = -EINVAL;
5981                 goto out;
5982         }
5983
5984         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5985                 params->hidden_ssid = nla_get_u32(
5986                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5987
5988         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5989
5990         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5991                 params->auth_type = nla_get_u32(
5992                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5993                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5994                                              NL80211_CMD_START_AP)) {
5995                         err = -EINVAL;
5996                         goto out;
5997                 }
5998         } else
5999                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6000
6001         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6002                                       NL80211_MAX_NR_CIPHER_SUITES);
6003         if (err)
6004                 goto out;
6005
6006         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6007                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6008                         err = -EOPNOTSUPP;
6009                         goto out;
6010                 }
6011                 params->inactivity_timeout = nla_get_u16(
6012                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6013         }
6014
6015         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6016                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6017                         err = -EINVAL;
6018                         goto out;
6019                 }
6020                 params->p2p_ctwindow =
6021                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6022                 if (params->p2p_ctwindow != 0 &&
6023                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6024                         err = -EINVAL;
6025                         goto out;
6026                 }
6027         }
6028
6029         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6030                 u8 tmp;
6031
6032                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6033                         err = -EINVAL;
6034                         goto out;
6035                 }
6036                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6037                 params->p2p_opp_ps = tmp;
6038                 if (params->p2p_opp_ps != 0 &&
6039                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6040                         err = -EINVAL;
6041                         goto out;
6042                 }
6043         }
6044
6045         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6046                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6047                 if (err)
6048                         goto out;
6049         } else if (wdev->valid_links) {
6050                 /* with MLD need to specify the channel configuration */
6051                 err = -EINVAL;
6052                 goto out;
6053         } else if (wdev->u.ap.preset_chandef.chan) {
6054                 params->chandef = wdev->u.ap.preset_chandef;
6055         } else if (!nl80211_get_ap_channel(rdev, params)) {
6056                 err = -EINVAL;
6057                 goto out;
6058         }
6059
6060         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6061                 err = nl80211_parse_punct_bitmap(rdev, info,
6062                                                  &params->chandef,
6063                                                  &params->punct_bitmap);
6064                 if (err)
6065                         goto out;
6066         }
6067
6068         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6069                                            wdev->iftype)) {
6070                 err = -EINVAL;
6071                 goto out;
6072         }
6073
6074         wdev_lock(wdev);
6075
6076         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6077                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6078                                                     NL80211_ATTR_TX_RATES,
6079                                                     &params->beacon_rate,
6080                                                     dev, false, link_id);
6081                 if (err)
6082                         goto out_unlock;
6083
6084                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6085                                               &params->beacon_rate);
6086                 if (err)
6087                         goto out_unlock;
6088         }
6089
6090         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6091                 params->smps_mode =
6092                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6093                 switch (params->smps_mode) {
6094                 case NL80211_SMPS_OFF:
6095                         break;
6096                 case NL80211_SMPS_STATIC:
6097                         if (!(rdev->wiphy.features &
6098                               NL80211_FEATURE_STATIC_SMPS)) {
6099                                 err = -EINVAL;
6100                                 goto out_unlock;
6101                         }
6102                         break;
6103                 case NL80211_SMPS_DYNAMIC:
6104                         if (!(rdev->wiphy.features &
6105                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6106                                 err = -EINVAL;
6107                                 goto out_unlock;
6108                         }
6109                         break;
6110                 default:
6111                         err = -EINVAL;
6112                         goto out_unlock;
6113                 }
6114         } else {
6115                 params->smps_mode = NL80211_SMPS_OFF;
6116         }
6117
6118         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6119         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6120                 err = -EOPNOTSUPP;
6121                 goto out_unlock;
6122         }
6123
6124         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6125                 params->acl = parse_acl_data(&rdev->wiphy, info);
6126                 if (IS_ERR(params->acl)) {
6127                         err = PTR_ERR(params->acl);
6128                         params->acl = NULL;
6129                         goto out_unlock;
6130                 }
6131         }
6132
6133         params->twt_responder =
6134                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6135
6136         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6137                 err = nl80211_parse_he_obss_pd(
6138                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6139                                         &params->he_obss_pd);
6140                 if (err)
6141                         goto out_unlock;
6142         }
6143
6144         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6145                 err = nl80211_parse_fils_discovery(rdev,
6146                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6147                                                    params);
6148                 if (err)
6149                         goto out_unlock;
6150         }
6151
6152         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6153                 err = nl80211_parse_unsol_bcast_probe_resp(
6154                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6155                         params);
6156                 if (err)
6157                         goto out_unlock;
6158         }
6159
6160         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6161                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6162                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6163                                                   &params->mbssid_config,
6164                                                   params->beacon.mbssid_ies ?
6165                                                         params->beacon.mbssid_ies->cnt :
6166                                                         0);
6167                 if (err)
6168                         goto out_unlock;
6169         }
6170
6171         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6172                 err = -EINVAL;
6173                 goto out_unlock;
6174         }
6175
6176         err = nl80211_calculate_ap_params(params);
6177         if (err)
6178                 goto out_unlock;
6179
6180         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6181                 params->flags = nla_get_u32(
6182                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6183         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6184                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6185
6186         if (wdev->conn_owner_nlportid &&
6187             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6188             wdev->conn_owner_nlportid != info->snd_portid) {
6189                 err = -EINVAL;
6190                 goto out_unlock;
6191         }
6192
6193         /* FIXME: validate MLO/link-id against driver capabilities */
6194
6195         err = rdev_start_ap(rdev, dev, params);
6196         if (!err) {
6197                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6198                 wdev->links[link_id].ap.chandef = params->chandef;
6199                 wdev->u.ap.ssid_len = params->ssid_len;
6200                 memcpy(wdev->u.ap.ssid, params->ssid,
6201                        params->ssid_len);
6202
6203                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6204                         wdev->conn_owner_nlportid = info->snd_portid;
6205
6206                 nl80211_send_ap_started(wdev, link_id);
6207         }
6208 out_unlock:
6209         wdev_unlock(wdev);
6210 out:
6211         kfree(params->acl);
6212         kfree(params->beacon.mbssid_ies);
6213         if (params->mbssid_config.tx_wdev &&
6214             params->mbssid_config.tx_wdev->netdev &&
6215             params->mbssid_config.tx_wdev->netdev != dev)
6216                 dev_put(params->mbssid_config.tx_wdev->netdev);
6217         kfree(params->beacon.rnr_ies);
6218         kfree(params);
6219
6220         return err;
6221 }
6222
6223 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6224 {
6225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6226         unsigned int link_id = nl80211_link_id(info->attrs);
6227         struct net_device *dev = info->user_ptr[1];
6228         struct wireless_dev *wdev = dev->ieee80211_ptr;
6229         struct cfg80211_beacon_data params;
6230         int err;
6231
6232         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6233             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6234                 return -EOPNOTSUPP;
6235
6236         if (!rdev->ops->change_beacon)
6237                 return -EOPNOTSUPP;
6238
6239         if (!wdev->links[link_id].ap.beacon_interval)
6240                 return -EINVAL;
6241
6242         err = nl80211_parse_beacon(rdev, info->attrs, &params, info->extack);
6243         if (err)
6244                 goto out;
6245
6246         wdev_lock(wdev);
6247         err = rdev_change_beacon(rdev, dev, &params);
6248         wdev_unlock(wdev);
6249
6250 out:
6251         kfree(params.mbssid_ies);
6252         kfree(params.rnr_ies);
6253         return err;
6254 }
6255
6256 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6257 {
6258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6259         unsigned int link_id = nl80211_link_id(info->attrs);
6260         struct net_device *dev = info->user_ptr[1];
6261
6262         return cfg80211_stop_ap(rdev, dev, link_id, false);
6263 }
6264
6265 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6266         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6267         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6268         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6269         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6270         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6271         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6272 };
6273
6274 static int parse_station_flags(struct genl_info *info,
6275                                enum nl80211_iftype iftype,
6276                                struct station_parameters *params)
6277 {
6278         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6279         struct nlattr *nla;
6280         int flag;
6281
6282         /*
6283          * Try parsing the new attribute first so userspace
6284          * can specify both for older kernels.
6285          */
6286         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6287         if (nla) {
6288                 struct nl80211_sta_flag_update *sta_flags;
6289
6290                 sta_flags = nla_data(nla);
6291                 params->sta_flags_mask = sta_flags->mask;
6292                 params->sta_flags_set = sta_flags->set;
6293                 params->sta_flags_set &= params->sta_flags_mask;
6294                 if ((params->sta_flags_mask |
6295                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6296                         return -EINVAL;
6297                 return 0;
6298         }
6299
6300         /* if present, parse the old attribute */
6301
6302         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6303         if (!nla)
6304                 return 0;
6305
6306         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6307                 return -EINVAL;
6308
6309         /*
6310          * Only allow certain flags for interface types so that
6311          * other attributes are silently ignored. Remember that
6312          * this is backward compatibility code with old userspace
6313          * and shouldn't be hit in other cases anyway.
6314          */
6315         switch (iftype) {
6316         case NL80211_IFTYPE_AP:
6317         case NL80211_IFTYPE_AP_VLAN:
6318         case NL80211_IFTYPE_P2P_GO:
6319                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6320                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6321                                          BIT(NL80211_STA_FLAG_WME) |
6322                                          BIT(NL80211_STA_FLAG_MFP);
6323                 break;
6324         case NL80211_IFTYPE_P2P_CLIENT:
6325         case NL80211_IFTYPE_STATION:
6326                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6327                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6328                 break;
6329         case NL80211_IFTYPE_MESH_POINT:
6330                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6331                                          BIT(NL80211_STA_FLAG_MFP) |
6332                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6333                 break;
6334         default:
6335                 return -EINVAL;
6336         }
6337
6338         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6339                 if (flags[flag]) {
6340                         params->sta_flags_set |= (1<<flag);
6341
6342                         /* no longer support new API additions in old API */
6343                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6344                                 return -EINVAL;
6345                 }
6346         }
6347
6348         return 0;
6349 }
6350
6351 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6352 {
6353         struct nlattr *rate;
6354         u32 bitrate;
6355         u16 bitrate_compat;
6356         enum nl80211_rate_info rate_flg;
6357
6358         rate = nla_nest_start_noflag(msg, attr);
6359         if (!rate)
6360                 return false;
6361
6362         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6363         bitrate = cfg80211_calculate_bitrate(info);
6364         /* report 16-bit bitrate only if we can */
6365         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6366         if (bitrate > 0 &&
6367             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6368                 return false;
6369         if (bitrate_compat > 0 &&
6370             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6371                 return false;
6372
6373         switch (info->bw) {
6374         case RATE_INFO_BW_1:
6375                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6376                 break;
6377         case RATE_INFO_BW_2:
6378                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6379                 break;
6380         case RATE_INFO_BW_4:
6381                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6382                 break;
6383         case RATE_INFO_BW_5:
6384                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6385                 break;
6386         case RATE_INFO_BW_8:
6387                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6388                 break;
6389         case RATE_INFO_BW_10:
6390                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6391                 break;
6392         case RATE_INFO_BW_16:
6393                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6394                 break;
6395         default:
6396                 WARN_ON(1);
6397                 fallthrough;
6398         case RATE_INFO_BW_20:
6399                 rate_flg = 0;
6400                 break;
6401         case RATE_INFO_BW_40:
6402                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6403                 break;
6404         case RATE_INFO_BW_80:
6405                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6406                 break;
6407         case RATE_INFO_BW_160:
6408                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6409                 break;
6410         case RATE_INFO_BW_HE_RU:
6411                 rate_flg = 0;
6412                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6413                 break;
6414         case RATE_INFO_BW_320:
6415                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6416                 break;
6417         case RATE_INFO_BW_EHT_RU:
6418                 rate_flg = 0;
6419                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6420                 break;
6421         }
6422
6423         if (rate_flg && nla_put_flag(msg, rate_flg))
6424                 return false;
6425
6426         if (info->flags & RATE_INFO_FLAGS_MCS) {
6427                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6428                         return false;
6429                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6430                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6431                         return false;
6432         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6433                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6434                         return false;
6435                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6436                         return false;
6437                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6438                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6439                         return false;
6440         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6441                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6442                         return false;
6443                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6444                         return false;
6445                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6446                         return false;
6447                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6448                         return false;
6449                 if (info->bw == RATE_INFO_BW_HE_RU &&
6450                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6451                                info->he_ru_alloc))
6452                         return false;
6453         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6454                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6455                         return false;
6456                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6457                         return false;
6458                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6459                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6460                         return false;
6461         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6462                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6463                         return false;
6464                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6465                         return false;
6466                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6467                         return false;
6468                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6469                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6470                                info->eht_ru_alloc))
6471                         return false;
6472         }
6473
6474         nla_nest_end(msg, rate);
6475         return true;
6476 }
6477
6478 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6479                                int id)
6480 {
6481         void *attr;
6482         int i = 0;
6483
6484         if (!mask)
6485                 return true;
6486
6487         attr = nla_nest_start_noflag(msg, id);
6488         if (!attr)
6489                 return false;
6490
6491         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6492                 if (!(mask & BIT(i)))
6493                         continue;
6494
6495                 if (nla_put_u8(msg, i, signal[i]))
6496                         return false;
6497         }
6498
6499         nla_nest_end(msg, attr);
6500
6501         return true;
6502 }
6503
6504 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6505                                 u32 seq, int flags,
6506                                 struct cfg80211_registered_device *rdev,
6507                                 struct net_device *dev,
6508                                 const u8 *mac_addr, struct station_info *sinfo)
6509 {
6510         void *hdr;
6511         struct nlattr *sinfoattr, *bss_param;
6512
6513         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6514         if (!hdr) {
6515                 cfg80211_sinfo_release_content(sinfo);
6516                 return -1;
6517         }
6518
6519         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6520             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6521             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6522                 goto nla_put_failure;
6523
6524         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6525         if (!sinfoattr)
6526                 goto nla_put_failure;
6527
6528 #define PUT_SINFO(attr, memb, type) do {                                \
6529         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6530         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6531             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6532                              sinfo->memb))                              \
6533                 goto nla_put_failure;                                   \
6534         } while (0)
6535 #define PUT_SINFO_U64(attr, memb) do {                                  \
6536         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6537             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6538                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6539                 goto nla_put_failure;                                   \
6540         } while (0)
6541
6542         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6543         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6544         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6545
6546         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6547                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6548             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6549                         (u32)sinfo->rx_bytes))
6550                 goto nla_put_failure;
6551
6552         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6553                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6554             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6555                         (u32)sinfo->tx_bytes))
6556                 goto nla_put_failure;
6557
6558         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6559         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6560         PUT_SINFO(LLID, llid, u16);
6561         PUT_SINFO(PLID, plid, u16);
6562         PUT_SINFO(PLINK_STATE, plink_state, u8);
6563         PUT_SINFO_U64(RX_DURATION, rx_duration);
6564         PUT_SINFO_U64(TX_DURATION, tx_duration);
6565
6566         if (wiphy_ext_feature_isset(&rdev->wiphy,
6567                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6568                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6569
6570         switch (rdev->wiphy.signal_type) {
6571         case CFG80211_SIGNAL_TYPE_MBM:
6572                 PUT_SINFO(SIGNAL, signal, u8);
6573                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6574                 break;
6575         default:
6576                 break;
6577         }
6578         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6579                 if (!nl80211_put_signal(msg, sinfo->chains,
6580                                         sinfo->chain_signal,
6581                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6582                         goto nla_put_failure;
6583         }
6584         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6585                 if (!nl80211_put_signal(msg, sinfo->chains,
6586                                         sinfo->chain_signal_avg,
6587                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6588                         goto nla_put_failure;
6589         }
6590         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6591                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6592                                           NL80211_STA_INFO_TX_BITRATE))
6593                         goto nla_put_failure;
6594         }
6595         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6596                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6597                                           NL80211_STA_INFO_RX_BITRATE))
6598                         goto nla_put_failure;
6599         }
6600
6601         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6602         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6603         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6604         PUT_SINFO(TX_FAILED, tx_failed, u32);
6605         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6606         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6607         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6608         PUT_SINFO(LOCAL_PM, local_pm, u32);
6609         PUT_SINFO(PEER_PM, peer_pm, u32);
6610         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6611         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6612         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6613
6614         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6615                 bss_param = nla_nest_start_noflag(msg,
6616                                                   NL80211_STA_INFO_BSS_PARAM);
6617                 if (!bss_param)
6618                         goto nla_put_failure;
6619
6620                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6621                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6622                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6623                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6624                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6625                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6626                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6627                                sinfo->bss_param.dtim_period) ||
6628                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6629                                 sinfo->bss_param.beacon_interval))
6630                         goto nla_put_failure;
6631
6632                 nla_nest_end(msg, bss_param);
6633         }
6634         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6635             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6636                     sizeof(struct nl80211_sta_flag_update),
6637                     &sinfo->sta_flags))
6638                 goto nla_put_failure;
6639
6640         PUT_SINFO_U64(T_OFFSET, t_offset);
6641         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6642         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6643         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6644         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6645         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6646         if (wiphy_ext_feature_isset(&rdev->wiphy,
6647                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6648                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6649                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6650         }
6651
6652 #undef PUT_SINFO
6653 #undef PUT_SINFO_U64
6654
6655         if (sinfo->pertid) {
6656                 struct nlattr *tidsattr;
6657                 int tid;
6658
6659                 tidsattr = nla_nest_start_noflag(msg,
6660                                                  NL80211_STA_INFO_TID_STATS);
6661                 if (!tidsattr)
6662                         goto nla_put_failure;
6663
6664                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6665                         struct cfg80211_tid_stats *tidstats;
6666                         struct nlattr *tidattr;
6667
6668                         tidstats = &sinfo->pertid[tid];
6669
6670                         if (!tidstats->filled)
6671                                 continue;
6672
6673                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6674                         if (!tidattr)
6675                                 goto nla_put_failure;
6676
6677 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6678         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6679             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6680                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6681                 goto nla_put_failure;                                   \
6682         } while (0)
6683
6684                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6685                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6686                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6687                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6688
6689 #undef PUT_TIDVAL_U64
6690                         if ((tidstats->filled &
6691                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6692                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6693                                                    NL80211_TID_STATS_TXQ_STATS))
6694                                 goto nla_put_failure;
6695
6696                         nla_nest_end(msg, tidattr);
6697                 }
6698
6699                 nla_nest_end(msg, tidsattr);
6700         }
6701
6702         nla_nest_end(msg, sinfoattr);
6703
6704         if (sinfo->assoc_req_ies_len &&
6705             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6706                     sinfo->assoc_req_ies))
6707                 goto nla_put_failure;
6708
6709         if (sinfo->assoc_resp_ies_len &&
6710             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6711                     sinfo->assoc_resp_ies))
6712                 goto nla_put_failure;
6713
6714         if (sinfo->mlo_params_valid) {
6715                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6716                                sinfo->assoc_link_id))
6717                         goto nla_put_failure;
6718
6719                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6720                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6721                             sinfo->mld_addr))
6722                         goto nla_put_failure;
6723         }
6724
6725         cfg80211_sinfo_release_content(sinfo);
6726         genlmsg_end(msg, hdr);
6727         return 0;
6728
6729  nla_put_failure:
6730         cfg80211_sinfo_release_content(sinfo);
6731         genlmsg_cancel(msg, hdr);
6732         return -EMSGSIZE;
6733 }
6734
6735 static int nl80211_dump_station(struct sk_buff *skb,
6736                                 struct netlink_callback *cb)
6737 {
6738         struct station_info sinfo;
6739         struct cfg80211_registered_device *rdev;
6740         struct wireless_dev *wdev;
6741         u8 mac_addr[ETH_ALEN];
6742         int sta_idx = cb->args[2];
6743         int err;
6744
6745         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6746         if (err)
6747                 return err;
6748         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6749         __acquire(&rdev->wiphy.mtx);
6750
6751         if (!wdev->netdev) {
6752                 err = -EINVAL;
6753                 goto out_err;
6754         }
6755
6756         if (!rdev->ops->dump_station) {
6757                 err = -EOPNOTSUPP;
6758                 goto out_err;
6759         }
6760
6761         while (1) {
6762                 memset(&sinfo, 0, sizeof(sinfo));
6763                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6764                                         mac_addr, &sinfo);
6765                 if (err == -ENOENT)
6766                         break;
6767                 if (err)
6768                         goto out_err;
6769
6770                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6771                                 NETLINK_CB(cb->skb).portid,
6772                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6773                                 rdev, wdev->netdev, mac_addr,
6774                                 &sinfo) < 0)
6775                         goto out;
6776
6777                 sta_idx++;
6778         }
6779
6780  out:
6781         cb->args[2] = sta_idx;
6782         err = skb->len;
6783  out_err:
6784         wiphy_unlock(&rdev->wiphy);
6785
6786         return err;
6787 }
6788
6789 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6790 {
6791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6792         struct net_device *dev = info->user_ptr[1];
6793         struct station_info sinfo;
6794         struct sk_buff *msg;
6795         u8 *mac_addr = NULL;
6796         int err;
6797
6798         memset(&sinfo, 0, sizeof(sinfo));
6799
6800         if (!info->attrs[NL80211_ATTR_MAC])
6801                 return -EINVAL;
6802
6803         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6804
6805         if (!rdev->ops->get_station)
6806                 return -EOPNOTSUPP;
6807
6808         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6809         if (err)
6810                 return err;
6811
6812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6813         if (!msg) {
6814                 cfg80211_sinfo_release_content(&sinfo);
6815                 return -ENOMEM;
6816         }
6817
6818         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6819                                  info->snd_portid, info->snd_seq, 0,
6820                                  rdev, dev, mac_addr, &sinfo) < 0) {
6821                 nlmsg_free(msg);
6822                 return -ENOBUFS;
6823         }
6824
6825         return genlmsg_reply(msg, info);
6826 }
6827
6828 int cfg80211_check_station_change(struct wiphy *wiphy,
6829                                   struct station_parameters *params,
6830                                   enum cfg80211_station_type statype)
6831 {
6832         if (params->listen_interval != -1 &&
6833             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6834                 return -EINVAL;
6835
6836         if (params->support_p2p_ps != -1 &&
6837             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6838                 return -EINVAL;
6839
6840         if (params->aid &&
6841             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6842             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6843                 return -EINVAL;
6844
6845         /* When you run into this, adjust the code below for the new flag */
6846         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6847
6848         switch (statype) {
6849         case CFG80211_STA_MESH_PEER_KERNEL:
6850         case CFG80211_STA_MESH_PEER_USER:
6851                 /*
6852                  * No ignoring the TDLS flag here -- the userspace mesh
6853                  * code doesn't have the bug of including TDLS in the
6854                  * mask everywhere.
6855                  */
6856                 if (params->sta_flags_mask &
6857                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6858                                   BIT(NL80211_STA_FLAG_MFP) |
6859                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6860                         return -EINVAL;
6861                 break;
6862         case CFG80211_STA_TDLS_PEER_SETUP:
6863         case CFG80211_STA_TDLS_PEER_ACTIVE:
6864                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6865                         return -EINVAL;
6866                 /* ignore since it can't change */
6867                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6868                 break;
6869         default:
6870                 /* disallow mesh-specific things */
6871                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6872                         return -EINVAL;
6873                 if (params->local_pm)
6874                         return -EINVAL;
6875                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6876                         return -EINVAL;
6877         }
6878
6879         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6880             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6881                 /* TDLS can't be set, ... */
6882                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6883                         return -EINVAL;
6884                 /*
6885                  * ... but don't bother the driver with it. This works around
6886                  * a hostapd/wpa_supplicant issue -- it always includes the
6887                  * TLDS_PEER flag in the mask even for AP mode.
6888                  */
6889                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6890         }
6891
6892         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6893             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6894                 /* reject other things that can't change */
6895                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6896                         return -EINVAL;
6897                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6898                         return -EINVAL;
6899                 if (params->link_sta_params.supported_rates)
6900                         return -EINVAL;
6901                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6902                     params->link_sta_params.vht_capa ||
6903                     params->link_sta_params.he_capa ||
6904                     params->link_sta_params.eht_capa)
6905                         return -EINVAL;
6906         }
6907
6908         if (statype != CFG80211_STA_AP_CLIENT &&
6909             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6910                 if (params->vlan)
6911                         return -EINVAL;
6912         }
6913
6914         switch (statype) {
6915         case CFG80211_STA_AP_MLME_CLIENT:
6916                 /* Use this only for authorizing/unauthorizing a station */
6917                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6918                         return -EOPNOTSUPP;
6919                 break;
6920         case CFG80211_STA_AP_CLIENT:
6921         case CFG80211_STA_AP_CLIENT_UNASSOC:
6922                 /* accept only the listed bits */
6923                 if (params->sta_flags_mask &
6924                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6925                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6926                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6927                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6928                                   BIT(NL80211_STA_FLAG_WME) |
6929                                   BIT(NL80211_STA_FLAG_MFP)))
6930                         return -EINVAL;
6931
6932                 /* but authenticated/associated only if driver handles it */
6933                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6934                     params->sta_flags_mask &
6935                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6936                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6937                         return -EINVAL;
6938                 break;
6939         case CFG80211_STA_IBSS:
6940         case CFG80211_STA_AP_STA:
6941                 /* reject any changes other than AUTHORIZED */
6942                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6943                         return -EINVAL;
6944                 break;
6945         case CFG80211_STA_TDLS_PEER_SETUP:
6946                 /* reject any changes other than AUTHORIZED or WME */
6947                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6948                                                BIT(NL80211_STA_FLAG_WME)))
6949                         return -EINVAL;
6950                 /* force (at least) rates when authorizing */
6951                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6952                     !params->link_sta_params.supported_rates)
6953                         return -EINVAL;
6954                 break;
6955         case CFG80211_STA_TDLS_PEER_ACTIVE:
6956                 /* reject any changes */
6957                 return -EINVAL;
6958         case CFG80211_STA_MESH_PEER_KERNEL:
6959                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6960                         return -EINVAL;
6961                 break;
6962         case CFG80211_STA_MESH_PEER_USER:
6963                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6964                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6965                         return -EINVAL;
6966                 break;
6967         }
6968
6969         /*
6970          * Older kernel versions ignored this attribute entirely, so don't
6971          * reject attempts to update it but mark it as unused instead so the
6972          * driver won't look at the data.
6973          */
6974         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6975             statype != CFG80211_STA_TDLS_PEER_SETUP)
6976                 params->link_sta_params.opmode_notif_used = false;
6977
6978         return 0;
6979 }
6980 EXPORT_SYMBOL(cfg80211_check_station_change);
6981
6982 /*
6983  * Get vlan interface making sure it is running and on the right wiphy.
6984  */
6985 static struct net_device *get_vlan(struct genl_info *info,
6986                                    struct cfg80211_registered_device *rdev)
6987 {
6988         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6989         struct net_device *v;
6990         int ret;
6991
6992         if (!vlanattr)
6993                 return NULL;
6994
6995         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6996         if (!v)
6997                 return ERR_PTR(-ENODEV);
6998
6999         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7000                 ret = -EINVAL;
7001                 goto error;
7002         }
7003
7004         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7005             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7006             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7007                 ret = -EINVAL;
7008                 goto error;
7009         }
7010
7011         if (!netif_running(v)) {
7012                 ret = -ENETDOWN;
7013                 goto error;
7014         }
7015
7016         return v;
7017  error:
7018         dev_put(v);
7019         return ERR_PTR(ret);
7020 }
7021
7022 static int nl80211_parse_sta_wme(struct genl_info *info,
7023                                  struct station_parameters *params)
7024 {
7025         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7026         struct nlattr *nla;
7027         int err;
7028
7029         /* parse WME attributes if present */
7030         if (!info->attrs[NL80211_ATTR_STA_WME])
7031                 return 0;
7032
7033         nla = info->attrs[NL80211_ATTR_STA_WME];
7034         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7035                                           nl80211_sta_wme_policy,
7036                                           info->extack);
7037         if (err)
7038                 return err;
7039
7040         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7041                 params->uapsd_queues = nla_get_u8(
7042                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7043         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7044                 return -EINVAL;
7045
7046         if (tb[NL80211_STA_WME_MAX_SP])
7047                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7048
7049         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7050                 return -EINVAL;
7051
7052         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7053
7054         return 0;
7055 }
7056
7057 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7058                                       struct station_parameters *params)
7059 {
7060         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7061                 params->supported_channels =
7062                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7063                 params->supported_channels_len =
7064                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7065                 /*
7066                  * Need to include at least one (first channel, number of
7067                  * channels) tuple for each subband (checked in policy),
7068                  * and must have proper tuples for the rest of the data as well.
7069                  */
7070                 if (params->supported_channels_len % 2)
7071                         return -EINVAL;
7072         }
7073
7074         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7075                 params->supported_oper_classes =
7076                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7077                 params->supported_oper_classes_len =
7078                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7079         }
7080         return 0;
7081 }
7082
7083 static int nl80211_set_station_tdls(struct genl_info *info,
7084                                     struct station_parameters *params)
7085 {
7086         int err;
7087         /* Dummy STA entry gets updated once the peer capabilities are known */
7088         if (info->attrs[NL80211_ATTR_PEER_AID])
7089                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7090         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7091                 params->link_sta_params.ht_capa =
7092                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7093         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7094                 params->link_sta_params.vht_capa =
7095                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7096         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7097                 params->link_sta_params.he_capa =
7098                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7099                 params->link_sta_params.he_capa_len =
7100                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7101
7102                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7103                         params->link_sta_params.eht_capa =
7104                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7105                         params->link_sta_params.eht_capa_len =
7106                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7107
7108                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7109                                                         (const u8 *)params->link_sta_params.eht_capa,
7110                                                         params->link_sta_params.eht_capa_len,
7111                                                         false))
7112                                 return -EINVAL;
7113                 }
7114         }
7115
7116         err = nl80211_parse_sta_channel_info(info, params);
7117         if (err)
7118                 return err;
7119
7120         return nl80211_parse_sta_wme(info, params);
7121 }
7122
7123 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7124                                              struct sta_txpwr *txpwr,
7125                                              bool *txpwr_set)
7126 {
7127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7128         int idx;
7129
7130         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7131                 if (!rdev->ops->set_tx_power ||
7132                     !wiphy_ext_feature_isset(&rdev->wiphy,
7133                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7134                         return -EOPNOTSUPP;
7135
7136                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7137                 txpwr->type = nla_get_u8(info->attrs[idx]);
7138
7139                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7140                         idx = NL80211_ATTR_STA_TX_POWER;
7141
7142                         if (info->attrs[idx])
7143                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7144                         else
7145                                 return -EINVAL;
7146                 }
7147
7148                 *txpwr_set = true;
7149         } else {
7150                 *txpwr_set = false;
7151         }
7152
7153         return 0;
7154 }
7155
7156 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7157 {
7158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7159         struct net_device *dev = info->user_ptr[1];
7160         struct station_parameters params;
7161         u8 *mac_addr;
7162         int err;
7163
7164         memset(&params, 0, sizeof(params));
7165
7166         if (!rdev->ops->change_station)
7167                 return -EOPNOTSUPP;
7168
7169         /*
7170          * AID and listen_interval properties can be set only for unassociated
7171          * station. Include these parameters here and will check them in
7172          * cfg80211_check_station_change().
7173          */
7174         if (info->attrs[NL80211_ATTR_STA_AID])
7175                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7176
7177         if (info->attrs[NL80211_ATTR_VLAN_ID])
7178                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7179
7180         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7181                 params.listen_interval =
7182                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7183         else
7184                 params.listen_interval = -1;
7185
7186         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7187                 params.support_p2p_ps =
7188                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7189         else
7190                 params.support_p2p_ps = -1;
7191
7192         if (!info->attrs[NL80211_ATTR_MAC])
7193                 return -EINVAL;
7194
7195         params.link_sta_params.link_id =
7196                 nl80211_link_id_or_invalid(info->attrs);
7197
7198         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7199                 /* If MLD_ADDR attribute is set then this is an MLD station
7200                  * and the MLD_ADDR attribute holds the MLD address and the
7201                  * MAC attribute holds for the LINK address.
7202                  * In that case, the link_id is also expected to be valid.
7203                  */
7204                 if (params.link_sta_params.link_id < 0)
7205                         return -EINVAL;
7206
7207                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7208                 params.link_sta_params.mld_mac = mac_addr;
7209                 params.link_sta_params.link_mac =
7210                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7211                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7212                         return -EINVAL;
7213         } else {
7214                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7215         }
7216
7217
7218         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7219                 params.link_sta_params.supported_rates =
7220                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7221                 params.link_sta_params.supported_rates_len =
7222                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7223         }
7224
7225         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7226                 params.capability =
7227                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7228                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7229         }
7230
7231         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7232                 params.ext_capab =
7233                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7234                 params.ext_capab_len =
7235                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7236         }
7237
7238         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7239                 return -EINVAL;
7240
7241         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7242                 params.plink_action =
7243                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7244
7245         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7246                 params.plink_state =
7247                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7248                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7249                         params.peer_aid = nla_get_u16(
7250                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7251                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7252         }
7253
7254         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7255                 params.local_pm = nla_get_u32(
7256                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7257
7258         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7259                 params.link_sta_params.opmode_notif_used = true;
7260                 params.link_sta_params.opmode_notif =
7261                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7262         }
7263
7264         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7265                 params.link_sta_params.he_6ghz_capa =
7266                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7267
7268         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7269                 params.airtime_weight =
7270                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7271
7272         if (params.airtime_weight &&
7273             !wiphy_ext_feature_isset(&rdev->wiphy,
7274                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7275                 return -EOPNOTSUPP;
7276
7277         err = nl80211_parse_sta_txpower_setting(info,
7278                                                 &params.link_sta_params.txpwr,
7279                                                 &params.link_sta_params.txpwr_set);
7280         if (err)
7281                 return err;
7282
7283         /* Include parameters for TDLS peer (will check later) */
7284         err = nl80211_set_station_tdls(info, &params);
7285         if (err)
7286                 return err;
7287
7288         params.vlan = get_vlan(info, rdev);
7289         if (IS_ERR(params.vlan))
7290                 return PTR_ERR(params.vlan);
7291
7292         switch (dev->ieee80211_ptr->iftype) {
7293         case NL80211_IFTYPE_AP:
7294         case NL80211_IFTYPE_AP_VLAN:
7295         case NL80211_IFTYPE_P2P_GO:
7296         case NL80211_IFTYPE_P2P_CLIENT:
7297         case NL80211_IFTYPE_STATION:
7298         case NL80211_IFTYPE_ADHOC:
7299         case NL80211_IFTYPE_MESH_POINT:
7300                 break;
7301         default:
7302                 err = -EOPNOTSUPP;
7303                 goto out_put_vlan;
7304         }
7305
7306         /* driver will call cfg80211_check_station_change() */
7307         wdev_lock(dev->ieee80211_ptr);
7308         err = rdev_change_station(rdev, dev, mac_addr, &params);
7309         wdev_unlock(dev->ieee80211_ptr);
7310
7311  out_put_vlan:
7312         dev_put(params.vlan);
7313
7314         return err;
7315 }
7316
7317 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7318 {
7319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7320         int err;
7321         struct net_device *dev = info->user_ptr[1];
7322         struct wireless_dev *wdev = dev->ieee80211_ptr;
7323         struct station_parameters params;
7324         u8 *mac_addr = NULL;
7325         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7326                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7327
7328         memset(&params, 0, sizeof(params));
7329
7330         if (!rdev->ops->add_station)
7331                 return -EOPNOTSUPP;
7332
7333         if (!info->attrs[NL80211_ATTR_MAC])
7334                 return -EINVAL;
7335
7336         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7337                 return -EINVAL;
7338
7339         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7340                 return -EINVAL;
7341
7342         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7343             !info->attrs[NL80211_ATTR_PEER_AID])
7344                 return -EINVAL;
7345
7346         params.link_sta_params.link_id =
7347                 nl80211_link_id_or_invalid(info->attrs);
7348
7349         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7350                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7351                 params.link_sta_params.mld_mac = mac_addr;
7352                 params.link_sta_params.link_mac =
7353                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7354                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7355                         return -EINVAL;
7356         } else {
7357                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7358         }
7359
7360         params.link_sta_params.supported_rates =
7361                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7362         params.link_sta_params.supported_rates_len =
7363                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7364         params.listen_interval =
7365                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7366
7367         if (info->attrs[NL80211_ATTR_VLAN_ID])
7368                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7369
7370         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7371                 params.support_p2p_ps =
7372                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7373         } else {
7374                 /*
7375                  * if not specified, assume it's supported for P2P GO interface,
7376                  * and is NOT supported for AP interface
7377                  */
7378                 params.support_p2p_ps =
7379                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7380         }
7381
7382         if (info->attrs[NL80211_ATTR_PEER_AID])
7383                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7384         else
7385                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7386
7387         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7388                 params.capability =
7389                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7390                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7391         }
7392
7393         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7394                 params.ext_capab =
7395                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7396                 params.ext_capab_len =
7397                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7398         }
7399
7400         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7401                 params.link_sta_params.ht_capa =
7402                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7403
7404         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7405                 params.link_sta_params.vht_capa =
7406                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7407
7408         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7409                 params.link_sta_params.he_capa =
7410                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7411                 params.link_sta_params.he_capa_len =
7412                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7413
7414                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7415                         params.link_sta_params.eht_capa =
7416                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7417                         params.link_sta_params.eht_capa_len =
7418                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7419
7420                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7421                                                         (const u8 *)params.link_sta_params.eht_capa,
7422                                                         params.link_sta_params.eht_capa_len,
7423                                                         false))
7424                                 return -EINVAL;
7425                 }
7426         }
7427
7428         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7429                 params.link_sta_params.he_6ghz_capa =
7430                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7431
7432         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7433                 params.link_sta_params.opmode_notif_used = true;
7434                 params.link_sta_params.opmode_notif =
7435                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7436         }
7437
7438         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7439                 params.plink_action =
7440                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7441
7442         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7443                 params.airtime_weight =
7444                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7445
7446         if (params.airtime_weight &&
7447             !wiphy_ext_feature_isset(&rdev->wiphy,
7448                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7449                 return -EOPNOTSUPP;
7450
7451         err = nl80211_parse_sta_txpower_setting(info,
7452                                                 &params.link_sta_params.txpwr,
7453                                                 &params.link_sta_params.txpwr_set);
7454         if (err)
7455                 return err;
7456
7457         err = nl80211_parse_sta_channel_info(info, &params);
7458         if (err)
7459                 return err;
7460
7461         err = nl80211_parse_sta_wme(info, &params);
7462         if (err)
7463                 return err;
7464
7465         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7466                 return -EINVAL;
7467
7468         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7469          * as userspace might just pass through the capabilities from the IEs
7470          * directly, rather than enforcing this restriction and returning an
7471          * error in this case.
7472          */
7473         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7474                 params.link_sta_params.ht_capa = NULL;
7475                 params.link_sta_params.vht_capa = NULL;
7476
7477                 /* HE and EHT require WME */
7478                 if (params.link_sta_params.he_capa_len ||
7479                     params.link_sta_params.he_6ghz_capa ||
7480                     params.link_sta_params.eht_capa_len)
7481                         return -EINVAL;
7482         }
7483
7484         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7485         if (params.link_sta_params.he_6ghz_capa &&
7486             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7487                 return -EINVAL;
7488
7489         /* When you run into this, adjust the code below for the new flag */
7490         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7491
7492         switch (dev->ieee80211_ptr->iftype) {
7493         case NL80211_IFTYPE_AP:
7494         case NL80211_IFTYPE_AP_VLAN:
7495         case NL80211_IFTYPE_P2P_GO:
7496                 /* ignore WME attributes if iface/sta is not capable */
7497                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7498                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7499                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7500
7501                 /* TDLS peers cannot be added */
7502                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7503                     info->attrs[NL80211_ATTR_PEER_AID])
7504                         return -EINVAL;
7505                 /* but don't bother the driver with it */
7506                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7507
7508                 /* allow authenticated/associated only if driver handles it */
7509                 if (!(rdev->wiphy.features &
7510                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7511                     params.sta_flags_mask & auth_assoc)
7512                         return -EINVAL;
7513
7514                 /* Older userspace, or userspace wanting to be compatible with
7515                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7516                  * and assoc flags in the mask, but assumes the station will be
7517                  * added as associated anyway since this was the required driver
7518                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7519                  * introduced.
7520                  * In order to not bother drivers with this quirk in the API
7521                  * set the flags in both the mask and set for new stations in
7522                  * this case.
7523                  */
7524                 if (!(params.sta_flags_mask & auth_assoc)) {
7525                         params.sta_flags_mask |= auth_assoc;
7526                         params.sta_flags_set |= auth_assoc;
7527                 }
7528
7529                 /* must be last in here for error handling */
7530                 params.vlan = get_vlan(info, rdev);
7531                 if (IS_ERR(params.vlan))
7532                         return PTR_ERR(params.vlan);
7533                 break;
7534         case NL80211_IFTYPE_MESH_POINT:
7535                 /* ignore uAPSD data */
7536                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7537
7538                 /* associated is disallowed */
7539                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7540                         return -EINVAL;
7541                 /* TDLS peers cannot be added */
7542                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7543                     info->attrs[NL80211_ATTR_PEER_AID])
7544                         return -EINVAL;
7545                 break;
7546         case NL80211_IFTYPE_STATION:
7547         case NL80211_IFTYPE_P2P_CLIENT:
7548                 /* ignore uAPSD data */
7549                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7550
7551                 /* these are disallowed */
7552                 if (params.sta_flags_mask &
7553                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7554                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7555                         return -EINVAL;
7556                 /* Only TDLS peers can be added */
7557                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7558                         return -EINVAL;
7559                 /* Can only add if TDLS ... */
7560                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7561                         return -EOPNOTSUPP;
7562                 /* ... with external setup is supported */
7563                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7564                         return -EOPNOTSUPP;
7565                 /*
7566                  * Older wpa_supplicant versions always mark the TDLS peer
7567                  * as authorized, but it shouldn't yet be.
7568                  */
7569                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7570                 break;
7571         default:
7572                 return -EOPNOTSUPP;
7573         }
7574
7575         /* be aware of params.vlan when changing code here */
7576
7577         wdev_lock(dev->ieee80211_ptr);
7578         if (wdev->valid_links) {
7579                 if (params.link_sta_params.link_id < 0) {
7580                         err = -EINVAL;
7581                         goto out;
7582                 }
7583                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7584                         err = -ENOLINK;
7585                         goto out;
7586                 }
7587         } else {
7588                 if (params.link_sta_params.link_id >= 0) {
7589                         err = -EINVAL;
7590                         goto out;
7591                 }
7592         }
7593         err = rdev_add_station(rdev, dev, mac_addr, &params);
7594 out:
7595         wdev_unlock(dev->ieee80211_ptr);
7596         dev_put(params.vlan);
7597         return err;
7598 }
7599
7600 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7601 {
7602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7603         struct net_device *dev = info->user_ptr[1];
7604         struct station_del_parameters params;
7605         int ret;
7606
7607         memset(&params, 0, sizeof(params));
7608
7609         if (info->attrs[NL80211_ATTR_MAC])
7610                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7611
7612         switch (dev->ieee80211_ptr->iftype) {
7613         case NL80211_IFTYPE_AP:
7614         case NL80211_IFTYPE_AP_VLAN:
7615         case NL80211_IFTYPE_MESH_POINT:
7616         case NL80211_IFTYPE_P2P_GO:
7617                 /* always accept these */
7618                 break;
7619         case NL80211_IFTYPE_ADHOC:
7620                 /* conditionally accept */
7621                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7622                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7623                         break;
7624                 return -EINVAL;
7625         default:
7626                 return -EINVAL;
7627         }
7628
7629         if (!rdev->ops->del_station)
7630                 return -EOPNOTSUPP;
7631
7632         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7633                 params.subtype =
7634                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7635                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7636                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7637                         return -EINVAL;
7638         } else {
7639                 /* Default to Deauthentication frame */
7640                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7641         }
7642
7643         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7644                 params.reason_code =
7645                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7646                 if (params.reason_code == 0)
7647                         return -EINVAL; /* 0 is reserved */
7648         } else {
7649                 /* Default to reason code 2 */
7650                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7651         }
7652
7653         wdev_lock(dev->ieee80211_ptr);
7654         ret = rdev_del_station(rdev, dev, &params);
7655         wdev_unlock(dev->ieee80211_ptr);
7656
7657         return ret;
7658 }
7659
7660 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7661                                 int flags, struct net_device *dev,
7662                                 u8 *dst, u8 *next_hop,
7663                                 struct mpath_info *pinfo)
7664 {
7665         void *hdr;
7666         struct nlattr *pinfoattr;
7667
7668         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7669         if (!hdr)
7670                 return -1;
7671
7672         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7673             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7674             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7675             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7676                 goto nla_put_failure;
7677
7678         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7679         if (!pinfoattr)
7680                 goto nla_put_failure;
7681         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7682             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7683                         pinfo->frame_qlen))
7684                 goto nla_put_failure;
7685         if (((pinfo->filled & MPATH_INFO_SN) &&
7686              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7687             ((pinfo->filled & MPATH_INFO_METRIC) &&
7688              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7689                          pinfo->metric)) ||
7690             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7691              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7692                          pinfo->exptime)) ||
7693             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7694              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7695                         pinfo->flags)) ||
7696             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7697              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7698                          pinfo->discovery_timeout)) ||
7699             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7700              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7701                         pinfo->discovery_retries)) ||
7702             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7703              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7704                         pinfo->hop_count)) ||
7705             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7706              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7707                          pinfo->path_change_count)))
7708                 goto nla_put_failure;
7709
7710         nla_nest_end(msg, pinfoattr);
7711
7712         genlmsg_end(msg, hdr);
7713         return 0;
7714
7715  nla_put_failure:
7716         genlmsg_cancel(msg, hdr);
7717         return -EMSGSIZE;
7718 }
7719
7720 static int nl80211_dump_mpath(struct sk_buff *skb,
7721                               struct netlink_callback *cb)
7722 {
7723         struct mpath_info pinfo;
7724         struct cfg80211_registered_device *rdev;
7725         struct wireless_dev *wdev;
7726         u8 dst[ETH_ALEN];
7727         u8 next_hop[ETH_ALEN];
7728         int path_idx = cb->args[2];
7729         int err;
7730
7731         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7732         if (err)
7733                 return err;
7734         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7735         __acquire(&rdev->wiphy.mtx);
7736
7737         if (!rdev->ops->dump_mpath) {
7738                 err = -EOPNOTSUPP;
7739                 goto out_err;
7740         }
7741
7742         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7743                 err = -EOPNOTSUPP;
7744                 goto out_err;
7745         }
7746
7747         while (1) {
7748                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7749                                       next_hop, &pinfo);
7750                 if (err == -ENOENT)
7751                         break;
7752                 if (err)
7753                         goto out_err;
7754
7755                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7756                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7757                                        wdev->netdev, dst, next_hop,
7758                                        &pinfo) < 0)
7759                         goto out;
7760
7761                 path_idx++;
7762         }
7763
7764  out:
7765         cb->args[2] = path_idx;
7766         err = skb->len;
7767  out_err:
7768         wiphy_unlock(&rdev->wiphy);
7769         return err;
7770 }
7771
7772 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7773 {
7774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7775         int err;
7776         struct net_device *dev = info->user_ptr[1];
7777         struct mpath_info pinfo;
7778         struct sk_buff *msg;
7779         u8 *dst = NULL;
7780         u8 next_hop[ETH_ALEN];
7781
7782         memset(&pinfo, 0, sizeof(pinfo));
7783
7784         if (!info->attrs[NL80211_ATTR_MAC])
7785                 return -EINVAL;
7786
7787         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7788
7789         if (!rdev->ops->get_mpath)
7790                 return -EOPNOTSUPP;
7791
7792         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7793                 return -EOPNOTSUPP;
7794
7795         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7796         if (err)
7797                 return err;
7798
7799         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7800         if (!msg)
7801                 return -ENOMEM;
7802
7803         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7804                                  dev, dst, next_hop, &pinfo) < 0) {
7805                 nlmsg_free(msg);
7806                 return -ENOBUFS;
7807         }
7808
7809         return genlmsg_reply(msg, info);
7810 }
7811
7812 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7813 {
7814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7815         struct net_device *dev = info->user_ptr[1];
7816         u8 *dst = NULL;
7817         u8 *next_hop = NULL;
7818
7819         if (!info->attrs[NL80211_ATTR_MAC])
7820                 return -EINVAL;
7821
7822         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7823                 return -EINVAL;
7824
7825         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7826         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7827
7828         if (!rdev->ops->change_mpath)
7829                 return -EOPNOTSUPP;
7830
7831         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7832                 return -EOPNOTSUPP;
7833
7834         return rdev_change_mpath(rdev, dev, dst, next_hop);
7835 }
7836
7837 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7838 {
7839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7840         struct net_device *dev = info->user_ptr[1];
7841         u8 *dst = NULL;
7842         u8 *next_hop = NULL;
7843
7844         if (!info->attrs[NL80211_ATTR_MAC])
7845                 return -EINVAL;
7846
7847         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7848                 return -EINVAL;
7849
7850         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7851         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7852
7853         if (!rdev->ops->add_mpath)
7854                 return -EOPNOTSUPP;
7855
7856         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7857                 return -EOPNOTSUPP;
7858
7859         return rdev_add_mpath(rdev, dev, dst, next_hop);
7860 }
7861
7862 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7863 {
7864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7865         struct net_device *dev = info->user_ptr[1];
7866         u8 *dst = NULL;
7867
7868         if (info->attrs[NL80211_ATTR_MAC])
7869                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7870
7871         if (!rdev->ops->del_mpath)
7872                 return -EOPNOTSUPP;
7873
7874         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7875                 return -EOPNOTSUPP;
7876
7877         return rdev_del_mpath(rdev, dev, dst);
7878 }
7879
7880 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7881 {
7882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7883         int err;
7884         struct net_device *dev = info->user_ptr[1];
7885         struct mpath_info pinfo;
7886         struct sk_buff *msg;
7887         u8 *dst = NULL;
7888         u8 mpp[ETH_ALEN];
7889
7890         memset(&pinfo, 0, sizeof(pinfo));
7891
7892         if (!info->attrs[NL80211_ATTR_MAC])
7893                 return -EINVAL;
7894
7895         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7896
7897         if (!rdev->ops->get_mpp)
7898                 return -EOPNOTSUPP;
7899
7900         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7901                 return -EOPNOTSUPP;
7902
7903         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7904         if (err)
7905                 return err;
7906
7907         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7908         if (!msg)
7909                 return -ENOMEM;
7910
7911         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7912                                dev, dst, mpp, &pinfo) < 0) {
7913                 nlmsg_free(msg);
7914                 return -ENOBUFS;
7915         }
7916
7917         return genlmsg_reply(msg, info);
7918 }
7919
7920 static int nl80211_dump_mpp(struct sk_buff *skb,
7921                             struct netlink_callback *cb)
7922 {
7923         struct mpath_info pinfo;
7924         struct cfg80211_registered_device *rdev;
7925         struct wireless_dev *wdev;
7926         u8 dst[ETH_ALEN];
7927         u8 mpp[ETH_ALEN];
7928         int path_idx = cb->args[2];
7929         int err;
7930
7931         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7932         if (err)
7933                 return err;
7934         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7935         __acquire(&rdev->wiphy.mtx);
7936
7937         if (!rdev->ops->dump_mpp) {
7938                 err = -EOPNOTSUPP;
7939                 goto out_err;
7940         }
7941
7942         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7943                 err = -EOPNOTSUPP;
7944                 goto out_err;
7945         }
7946
7947         while (1) {
7948                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7949                                     mpp, &pinfo);
7950                 if (err == -ENOENT)
7951                         break;
7952                 if (err)
7953                         goto out_err;
7954
7955                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7956                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7957                                        wdev->netdev, dst, mpp,
7958                                        &pinfo) < 0)
7959                         goto out;
7960
7961                 path_idx++;
7962         }
7963
7964  out:
7965         cb->args[2] = path_idx;
7966         err = skb->len;
7967  out_err:
7968         wiphy_unlock(&rdev->wiphy);
7969         return err;
7970 }
7971
7972 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7973 {
7974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7975         struct net_device *dev = info->user_ptr[1];
7976         struct wireless_dev *wdev = dev->ieee80211_ptr;
7977         struct bss_parameters params;
7978         int err;
7979
7980         memset(&params, 0, sizeof(params));
7981         params.link_id = nl80211_link_id_or_invalid(info->attrs);
7982         /* default to not changing parameters */
7983         params.use_cts_prot = -1;
7984         params.use_short_preamble = -1;
7985         params.use_short_slot_time = -1;
7986         params.ap_isolate = -1;
7987         params.ht_opmode = -1;
7988         params.p2p_ctwindow = -1;
7989         params.p2p_opp_ps = -1;
7990
7991         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7992                 params.use_cts_prot =
7993                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7994         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7995                 params.use_short_preamble =
7996                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7997         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7998                 params.use_short_slot_time =
7999                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8000         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8001                 params.basic_rates =
8002                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8003                 params.basic_rates_len =
8004                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8005         }
8006         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8007                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8008         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8009                 params.ht_opmode =
8010                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8011
8012         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8013                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8014                         return -EINVAL;
8015                 params.p2p_ctwindow =
8016                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8017                 if (params.p2p_ctwindow != 0 &&
8018                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8019                         return -EINVAL;
8020         }
8021
8022         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8023                 u8 tmp;
8024
8025                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8026                         return -EINVAL;
8027                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8028                 params.p2p_opp_ps = tmp;
8029                 if (params.p2p_opp_ps &&
8030                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8031                         return -EINVAL;
8032         }
8033
8034         if (!rdev->ops->change_bss)
8035                 return -EOPNOTSUPP;
8036
8037         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8038             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8039                 return -EOPNOTSUPP;
8040
8041         wdev_lock(wdev);
8042         err = rdev_change_bss(rdev, dev, &params);
8043         wdev_unlock(wdev);
8044
8045         return err;
8046 }
8047
8048 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8049 {
8050         char *data = NULL;
8051         bool is_indoor;
8052         enum nl80211_user_reg_hint_type user_reg_hint_type;
8053         u32 owner_nlportid;
8054
8055         /*
8056          * You should only get this when cfg80211 hasn't yet initialized
8057          * completely when built-in to the kernel right between the time
8058          * window between nl80211_init() and regulatory_init(), if that is
8059          * even possible.
8060          */
8061         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8062                 return -EINPROGRESS;
8063
8064         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8065                 user_reg_hint_type =
8066                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8067         else
8068                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8069
8070         switch (user_reg_hint_type) {
8071         case NL80211_USER_REG_HINT_USER:
8072         case NL80211_USER_REG_HINT_CELL_BASE:
8073                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8074                         return -EINVAL;
8075
8076                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8077                 return regulatory_hint_user(data, user_reg_hint_type);
8078         case NL80211_USER_REG_HINT_INDOOR:
8079                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8080                         owner_nlportid = info->snd_portid;
8081                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8082                 } else {
8083                         owner_nlportid = 0;
8084                         is_indoor = true;
8085                 }
8086
8087                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8088         default:
8089                 return -EINVAL;
8090         }
8091 }
8092
8093 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8094 {
8095         return reg_reload_regdb();
8096 }
8097
8098 static int nl80211_get_mesh_config(struct sk_buff *skb,
8099                                    struct genl_info *info)
8100 {
8101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8102         struct net_device *dev = info->user_ptr[1];
8103         struct wireless_dev *wdev = dev->ieee80211_ptr;
8104         struct mesh_config cur_params;
8105         int err = 0;
8106         void *hdr;
8107         struct nlattr *pinfoattr;
8108         struct sk_buff *msg;
8109
8110         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8111                 return -EOPNOTSUPP;
8112
8113         if (!rdev->ops->get_mesh_config)
8114                 return -EOPNOTSUPP;
8115
8116         wdev_lock(wdev);
8117         /* If not connected, get default parameters */
8118         if (!wdev->u.mesh.id_len)
8119                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8120         else
8121                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8122         wdev_unlock(wdev);
8123
8124         if (err)
8125                 return err;
8126
8127         /* Draw up a netlink message to send back */
8128         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8129         if (!msg)
8130                 return -ENOMEM;
8131         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8132                              NL80211_CMD_GET_MESH_CONFIG);
8133         if (!hdr)
8134                 goto out;
8135         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8136         if (!pinfoattr)
8137                 goto nla_put_failure;
8138         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8139             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8140                         cur_params.dot11MeshRetryTimeout) ||
8141             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8142                         cur_params.dot11MeshConfirmTimeout) ||
8143             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8144                         cur_params.dot11MeshHoldingTimeout) ||
8145             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8146                         cur_params.dot11MeshMaxPeerLinks) ||
8147             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8148                        cur_params.dot11MeshMaxRetries) ||
8149             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8150                        cur_params.dot11MeshTTL) ||
8151             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8152                        cur_params.element_ttl) ||
8153             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8154                        cur_params.auto_open_plinks) ||
8155             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8156                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8157             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8158                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8159             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8160                         cur_params.path_refresh_time) ||
8161             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8162                         cur_params.min_discovery_timeout) ||
8163             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8164                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8165             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8166                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8167             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8168                         cur_params.dot11MeshHWMPperrMinInterval) ||
8169             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8170                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8171             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8172                        cur_params.dot11MeshHWMPRootMode) ||
8173             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8174                         cur_params.dot11MeshHWMPRannInterval) ||
8175             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8176                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8177             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8178                        cur_params.dot11MeshForwarding) ||
8179             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8180                         cur_params.rssi_threshold) ||
8181             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8182                         cur_params.ht_opmode) ||
8183             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8184                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8185             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8186                         cur_params.dot11MeshHWMProotInterval) ||
8187             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8188                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8189             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8190                         cur_params.power_mode) ||
8191             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8192                         cur_params.dot11MeshAwakeWindowDuration) ||
8193             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8194                         cur_params.plink_timeout) ||
8195             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8196                        cur_params.dot11MeshConnectedToMeshGate) ||
8197             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8198                        cur_params.dot11MeshNolearn) ||
8199             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8200                        cur_params.dot11MeshConnectedToAuthServer))
8201                 goto nla_put_failure;
8202         nla_nest_end(msg, pinfoattr);
8203         genlmsg_end(msg, hdr);
8204         return genlmsg_reply(msg, info);
8205
8206  nla_put_failure:
8207  out:
8208         nlmsg_free(msg);
8209         return -ENOBUFS;
8210 }
8211
8212 static const struct nla_policy
8213 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8214         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8215                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8216         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8217                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8218         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8219                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8220         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8221                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8222         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8223         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8224         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8225         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8226         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8227                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8228         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8229         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8230         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8231         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8232         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8233                 NLA_POLICY_MIN(NLA_U16, 1),
8234         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8235                 NLA_POLICY_MIN(NLA_U16, 1),
8236         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8237                 NLA_POLICY_MIN(NLA_U16, 1),
8238         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8239         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8240                 NLA_POLICY_MIN(NLA_U16, 1),
8241         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8242         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8243         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8244                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8245         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8246         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8247         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8248                 NLA_POLICY_MIN(NLA_U16, 1),
8249         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8250                 NLA_POLICY_MIN(NLA_U16, 1),
8251         [NL80211_MESHCONF_POWER_MODE] =
8252                 NLA_POLICY_RANGE(NLA_U32,
8253                                  NL80211_MESH_POWER_ACTIVE,
8254                                  NL80211_MESH_POWER_MAX),
8255         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8256         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8257         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8258         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8259         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8260 };
8261
8262 static const struct nla_policy
8263         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8264         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8265         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8266         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8267         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8268         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8269         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8270         [NL80211_MESH_SETUP_IE] =
8271                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8272                                        IEEE80211_MAX_DATA_LEN),
8273         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8274 };
8275
8276 static int nl80211_parse_mesh_config(struct genl_info *info,
8277                                      struct mesh_config *cfg,
8278                                      u32 *mask_out)
8279 {
8280         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8281         u32 mask = 0;
8282         u16 ht_opmode;
8283
8284 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8285 do {                                                                    \
8286         if (tb[attr]) {                                                 \
8287                 cfg->param = fn(tb[attr]);                              \
8288                 mask |= BIT((attr) - 1);                                \
8289         }                                                               \
8290 } while (0)
8291
8292         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8293                 return -EINVAL;
8294         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8295                 return -EINVAL;
8296
8297         /* This makes sure that there aren't more than 32 mesh config
8298          * parameters (otherwise our bitfield scheme would not work.) */
8299         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8300
8301         /* Fill in the params struct */
8302         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8303                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8304         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8305                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8306                                   nla_get_u16);
8307         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8308                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8309                                   nla_get_u16);
8310         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8311                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8312                                   nla_get_u16);
8313         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8314                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8315         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8316                                   NL80211_MESHCONF_TTL, nla_get_u8);
8317         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8318                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8319         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8320                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8321                                   nla_get_u8);
8322         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8323                                   mask,
8324                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8325                                   nla_get_u32);
8326         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8327                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8328                                   nla_get_u8);
8329         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8330                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8331                                   nla_get_u32);
8332         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8333             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8334                 return -EINVAL;
8335         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8336                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8337                                   nla_get_u16);
8338         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8339                                   mask,
8340                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8341                                   nla_get_u32);
8342         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8343             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8344              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8345                 return -EINVAL;
8346         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8347                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8348                                   nla_get_u16);
8349         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8350                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8351                                   nla_get_u16);
8352         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8353                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8354                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8355                                   nla_get_u16);
8356         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8357                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8358         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8359                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8360                                   nla_get_u16);
8361         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8362                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8363                                   nla_get_u8);
8364         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8365                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8366         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8367                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8368                                   nla_get_s32);
8369         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8370                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8371                                   nla_get_u8);
8372         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8373                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8374                                   nla_get_u8);
8375         /*
8376          * Check HT operation mode based on
8377          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8378          */
8379         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8380                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8381
8382                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8383                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8384                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8385                         return -EINVAL;
8386
8387                 /* NON_HT_STA bit is reserved, but some programs set it */
8388                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8389
8390                 cfg->ht_opmode = ht_opmode;
8391                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8392         }
8393         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8394                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8395                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8396                                   nla_get_u32);
8397         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8398             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8399              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8400                 return -EINVAL;
8401         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8402                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8403                                   nla_get_u16);
8404         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8405                                   mask,
8406                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8407                                   nla_get_u16);
8408         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8409                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8410         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8411                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8412         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8413                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8414         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8415                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8416         if (mask_out)
8417                 *mask_out = mask;
8418
8419         return 0;
8420
8421 #undef FILL_IN_MESH_PARAM_IF_SET
8422 }
8423
8424 static int nl80211_parse_mesh_setup(struct genl_info *info,
8425                                      struct mesh_setup *setup)
8426 {
8427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8428         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8429
8430         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8431                 return -EINVAL;
8432         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8433                 return -EINVAL;
8434
8435         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8436                 setup->sync_method =
8437                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8438                  IEEE80211_SYNC_METHOD_VENDOR :
8439                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8440
8441         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8442                 setup->path_sel_proto =
8443                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8444                  IEEE80211_PATH_PROTOCOL_VENDOR :
8445                  IEEE80211_PATH_PROTOCOL_HWMP;
8446
8447         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8448                 setup->path_metric =
8449                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8450                  IEEE80211_PATH_METRIC_VENDOR :
8451                  IEEE80211_PATH_METRIC_AIRTIME;
8452
8453         if (tb[NL80211_MESH_SETUP_IE]) {
8454                 struct nlattr *ieattr =
8455                         tb[NL80211_MESH_SETUP_IE];
8456                 setup->ie = nla_data(ieattr);
8457                 setup->ie_len = nla_len(ieattr);
8458         }
8459         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8460             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8461                 return -EINVAL;
8462         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8463         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8464         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8465         if (setup->is_secure)
8466                 setup->user_mpm = true;
8467
8468         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8469                 if (!setup->user_mpm)
8470                         return -EINVAL;
8471                 setup->auth_id =
8472                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8473         }
8474
8475         return 0;
8476 }
8477
8478 static int nl80211_update_mesh_config(struct sk_buff *skb,
8479                                       struct genl_info *info)
8480 {
8481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8482         struct net_device *dev = info->user_ptr[1];
8483         struct wireless_dev *wdev = dev->ieee80211_ptr;
8484         struct mesh_config cfg;
8485         u32 mask;
8486         int err;
8487
8488         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8489                 return -EOPNOTSUPP;
8490
8491         if (!rdev->ops->update_mesh_config)
8492                 return -EOPNOTSUPP;
8493
8494         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8495         if (err)
8496                 return err;
8497
8498         wdev_lock(wdev);
8499         if (!wdev->u.mesh.id_len)
8500                 err = -ENOLINK;
8501
8502         if (!err)
8503                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8504
8505         wdev_unlock(wdev);
8506
8507         return err;
8508 }
8509
8510 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8511                               struct sk_buff *msg)
8512 {
8513         struct nlattr *nl_reg_rules;
8514         unsigned int i;
8515
8516         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8517             (regdom->dfs_region &&
8518              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8519                 goto nla_put_failure;
8520
8521         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8522         if (!nl_reg_rules)
8523                 goto nla_put_failure;
8524
8525         for (i = 0; i < regdom->n_reg_rules; i++) {
8526                 struct nlattr *nl_reg_rule;
8527                 const struct ieee80211_reg_rule *reg_rule;
8528                 const struct ieee80211_freq_range *freq_range;
8529                 const struct ieee80211_power_rule *power_rule;
8530                 unsigned int max_bandwidth_khz;
8531
8532                 reg_rule = &regdom->reg_rules[i];
8533                 freq_range = &reg_rule->freq_range;
8534                 power_rule = &reg_rule->power_rule;
8535
8536                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8537                 if (!nl_reg_rule)
8538                         goto nla_put_failure;
8539
8540                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8541                 if (!max_bandwidth_khz)
8542                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8543                                                                   reg_rule);
8544
8545                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8546                                 reg_rule->flags) ||
8547                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8548                                 freq_range->start_freq_khz) ||
8549                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8550                                 freq_range->end_freq_khz) ||
8551                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8552                                 max_bandwidth_khz) ||
8553                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8554                                 power_rule->max_antenna_gain) ||
8555                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8556                                 power_rule->max_eirp) ||
8557                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8558                                 reg_rule->dfs_cac_ms))
8559                         goto nla_put_failure;
8560
8561                 nla_nest_end(msg, nl_reg_rule);
8562         }
8563
8564         nla_nest_end(msg, nl_reg_rules);
8565         return 0;
8566
8567 nla_put_failure:
8568         return -EMSGSIZE;
8569 }
8570
8571 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8572 {
8573         const struct ieee80211_regdomain *regdom = NULL;
8574         struct cfg80211_registered_device *rdev;
8575         struct wiphy *wiphy = NULL;
8576         struct sk_buff *msg;
8577         int err = -EMSGSIZE;
8578         void *hdr;
8579
8580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8581         if (!msg)
8582                 return -ENOBUFS;
8583
8584         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8585                              NL80211_CMD_GET_REG);
8586         if (!hdr)
8587                 goto put_failure;
8588
8589         rtnl_lock();
8590
8591         if (info->attrs[NL80211_ATTR_WIPHY]) {
8592                 bool self_managed;
8593
8594                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8595                 if (IS_ERR(rdev)) {
8596                         err = PTR_ERR(rdev);
8597                         goto nla_put_failure;
8598                 }
8599
8600                 wiphy = &rdev->wiphy;
8601                 self_managed = wiphy->regulatory_flags &
8602                                REGULATORY_WIPHY_SELF_MANAGED;
8603
8604                 rcu_read_lock();
8605
8606                 regdom = get_wiphy_regdom(wiphy);
8607
8608                 /* a self-managed-reg device must have a private regdom */
8609                 if (WARN_ON(!regdom && self_managed)) {
8610                         err = -EINVAL;
8611                         goto nla_put_failure_rcu;
8612                 }
8613
8614                 if (regdom &&
8615                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8616                         goto nla_put_failure_rcu;
8617         } else {
8618                 rcu_read_lock();
8619         }
8620
8621         if (!wiphy && reg_last_request_cell_base() &&
8622             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8623                         NL80211_USER_REG_HINT_CELL_BASE))
8624                 goto nla_put_failure_rcu;
8625
8626         if (!regdom)
8627                 regdom = rcu_dereference(cfg80211_regdomain);
8628
8629         if (nl80211_put_regdom(regdom, msg))
8630                 goto nla_put_failure_rcu;
8631
8632         rcu_read_unlock();
8633
8634         genlmsg_end(msg, hdr);
8635         rtnl_unlock();
8636         return genlmsg_reply(msg, info);
8637
8638 nla_put_failure_rcu:
8639         rcu_read_unlock();
8640 nla_put_failure:
8641         rtnl_unlock();
8642 put_failure:
8643         nlmsg_free(msg);
8644         return err;
8645 }
8646
8647 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8648                                u32 seq, int flags, struct wiphy *wiphy,
8649                                const struct ieee80211_regdomain *regdom)
8650 {
8651         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8652                                    NL80211_CMD_GET_REG);
8653
8654         if (!hdr)
8655                 return -1;
8656
8657         genl_dump_check_consistent(cb, hdr);
8658
8659         if (nl80211_put_regdom(regdom, msg))
8660                 goto nla_put_failure;
8661
8662         if (!wiphy && reg_last_request_cell_base() &&
8663             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8664                         NL80211_USER_REG_HINT_CELL_BASE))
8665                 goto nla_put_failure;
8666
8667         if (wiphy &&
8668             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8669                 goto nla_put_failure;
8670
8671         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8672             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8673                 goto nla_put_failure;
8674
8675         genlmsg_end(msg, hdr);
8676         return 0;
8677
8678 nla_put_failure:
8679         genlmsg_cancel(msg, hdr);
8680         return -EMSGSIZE;
8681 }
8682
8683 static int nl80211_get_reg_dump(struct sk_buff *skb,
8684                                 struct netlink_callback *cb)
8685 {
8686         const struct ieee80211_regdomain *regdom = NULL;
8687         struct cfg80211_registered_device *rdev;
8688         int err, reg_idx, start = cb->args[2];
8689
8690         rcu_read_lock();
8691
8692         if (cfg80211_regdomain && start == 0) {
8693                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8694                                           NLM_F_MULTI, NULL,
8695                                           rcu_dereference(cfg80211_regdomain));
8696                 if (err < 0)
8697                         goto out_err;
8698         }
8699
8700         /* the global regdom is idx 0 */
8701         reg_idx = 1;
8702         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8703                 regdom = get_wiphy_regdom(&rdev->wiphy);
8704                 if (!regdom)
8705                         continue;
8706
8707                 if (++reg_idx <= start)
8708                         continue;
8709
8710                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8711                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8712                 if (err < 0) {
8713                         reg_idx--;
8714                         break;
8715                 }
8716         }
8717
8718         cb->args[2] = reg_idx;
8719         err = skb->len;
8720 out_err:
8721         rcu_read_unlock();
8722         return err;
8723 }
8724
8725 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8726 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8727         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8728         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8729         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8730         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8731         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8732         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8733         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8734 };
8735
8736 static int parse_reg_rule(struct nlattr *tb[],
8737         struct ieee80211_reg_rule *reg_rule)
8738 {
8739         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8740         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8741
8742         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8743                 return -EINVAL;
8744         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8745                 return -EINVAL;
8746         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8747                 return -EINVAL;
8748         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8749                 return -EINVAL;
8750         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8751                 return -EINVAL;
8752
8753         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8754
8755         freq_range->start_freq_khz =
8756                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8757         freq_range->end_freq_khz =
8758                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8759         freq_range->max_bandwidth_khz =
8760                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8761
8762         power_rule->max_eirp =
8763                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8764
8765         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8766                 power_rule->max_antenna_gain =
8767                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8768
8769         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8770                 reg_rule->dfs_cac_ms =
8771                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8772
8773         return 0;
8774 }
8775
8776 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8777 {
8778         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8779         struct nlattr *nl_reg_rule;
8780         char *alpha2;
8781         int rem_reg_rules, r;
8782         u32 num_rules = 0, rule_idx = 0;
8783         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8784         struct ieee80211_regdomain *rd;
8785
8786         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8787                 return -EINVAL;
8788
8789         if (!info->attrs[NL80211_ATTR_REG_RULES])
8790                 return -EINVAL;
8791
8792         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8793
8794         if (info->attrs[NL80211_ATTR_DFS_REGION])
8795                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8796
8797         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8798                             rem_reg_rules) {
8799                 num_rules++;
8800                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8801                         return -EINVAL;
8802         }
8803
8804         rtnl_lock();
8805         if (!reg_is_valid_request(alpha2)) {
8806                 r = -EINVAL;
8807                 goto out;
8808         }
8809
8810         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8811         if (!rd) {
8812                 r = -ENOMEM;
8813                 goto out;
8814         }
8815
8816         rd->n_reg_rules = num_rules;
8817         rd->alpha2[0] = alpha2[0];
8818         rd->alpha2[1] = alpha2[1];
8819
8820         /*
8821          * Disable DFS master mode if the DFS region was
8822          * not supported or known on this kernel.
8823          */
8824         if (reg_supported_dfs_region(dfs_region))
8825                 rd->dfs_region = dfs_region;
8826
8827         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8828                             rem_reg_rules) {
8829                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8830                                                 nl_reg_rule, reg_rule_policy,
8831                                                 info->extack);
8832                 if (r)
8833                         goto bad_reg;
8834                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8835                 if (r)
8836                         goto bad_reg;
8837
8838                 rule_idx++;
8839
8840                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8841                         r = -EINVAL;
8842                         goto bad_reg;
8843                 }
8844         }
8845
8846         r = set_regdom(rd, REGD_SOURCE_CRDA);
8847         /* set_regdom takes ownership of rd */
8848         rd = NULL;
8849  bad_reg:
8850         kfree(rd);
8851  out:
8852         rtnl_unlock();
8853         return r;
8854 }
8855 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8856
8857 static int validate_scan_freqs(struct nlattr *freqs)
8858 {
8859         struct nlattr *attr1, *attr2;
8860         int n_channels = 0, tmp1, tmp2;
8861
8862         nla_for_each_nested(attr1, freqs, tmp1)
8863                 if (nla_len(attr1) != sizeof(u32))
8864                         return 0;
8865
8866         nla_for_each_nested(attr1, freqs, tmp1) {
8867                 n_channels++;
8868                 /*
8869                  * Some hardware has a limited channel list for
8870                  * scanning, and it is pretty much nonsensical
8871                  * to scan for a channel twice, so disallow that
8872                  * and don't require drivers to check that the
8873                  * channel list they get isn't longer than what
8874                  * they can scan, as long as they can scan all
8875                  * the channels they registered at once.
8876                  */
8877                 nla_for_each_nested(attr2, freqs, tmp2)
8878                         if (attr1 != attr2 &&
8879                             nla_get_u32(attr1) == nla_get_u32(attr2))
8880                                 return 0;
8881         }
8882
8883         return n_channels;
8884 }
8885
8886 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8887 {
8888         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8889 }
8890
8891 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8892                             struct cfg80211_bss_selection *bss_select)
8893 {
8894         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8895         struct nlattr *nest;
8896         int err;
8897         bool found = false;
8898         int i;
8899
8900         /* only process one nested attribute */
8901         nest = nla_data(nla);
8902         if (!nla_ok(nest, nla_len(nest)))
8903                 return -EINVAL;
8904
8905         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8906                                           nest, nl80211_bss_select_policy,
8907                                           NULL);
8908         if (err)
8909                 return err;
8910
8911         /* only one attribute may be given */
8912         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8913                 if (attr[i]) {
8914                         if (found)
8915                                 return -EINVAL;
8916                         found = true;
8917                 }
8918         }
8919
8920         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8921
8922         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8923                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8924
8925         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8926                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8927                 bss_select->param.band_pref =
8928                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8929                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8930                         return -EINVAL;
8931         }
8932
8933         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8934                 struct nl80211_bss_select_rssi_adjust *adj_param;
8935
8936                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8937                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8938                 bss_select->param.adjust.band = adj_param->band;
8939                 bss_select->param.adjust.delta = adj_param->delta;
8940                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8941                         return -EINVAL;
8942         }
8943
8944         /* user-space did not provide behaviour attribute */
8945         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8946                 return -EINVAL;
8947
8948         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8949                 return -EINVAL;
8950
8951         return 0;
8952 }
8953
8954 int nl80211_parse_random_mac(struct nlattr **attrs,
8955                              u8 *mac_addr, u8 *mac_addr_mask)
8956 {
8957         int i;
8958
8959         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8960                 eth_zero_addr(mac_addr);
8961                 eth_zero_addr(mac_addr_mask);
8962                 mac_addr[0] = 0x2;
8963                 mac_addr_mask[0] = 0x3;
8964
8965                 return 0;
8966         }
8967
8968         /* need both or none */
8969         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8970                 return -EINVAL;
8971
8972         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8973         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8974
8975         /* don't allow or configure an mcast address */
8976         if (!is_multicast_ether_addr(mac_addr_mask) ||
8977             is_multicast_ether_addr(mac_addr))
8978                 return -EINVAL;
8979
8980         /*
8981          * allow users to pass a MAC address that has bits set outside
8982          * of the mask, but don't bother drivers with having to deal
8983          * with such bits
8984          */
8985         for (i = 0; i < ETH_ALEN; i++)
8986                 mac_addr[i] &= mac_addr_mask[i];
8987
8988         return 0;
8989 }
8990
8991 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8992                                               struct ieee80211_channel *chan)
8993 {
8994         unsigned int link_id;
8995         bool all_ok = true;
8996
8997         ASSERT_WDEV_LOCK(wdev);
8998
8999         if (!cfg80211_beaconing_iface_active(wdev))
9000                 return true;
9001
9002         /*
9003          * FIXME: check if we have a free HW resource/link for chan
9004          *
9005          * This, as well as the FIXME below, requires knowing the link
9006          * capabilities of the hardware.
9007          */
9008
9009         /* we cannot leave radar channels */
9010         for_each_valid_link(wdev, link_id) {
9011                 struct cfg80211_chan_def *chandef;
9012
9013                 chandef = wdev_chandef(wdev, link_id);
9014                 if (!chandef || !chandef->chan)
9015                         continue;
9016
9017                 /*
9018                  * FIXME: don't require all_ok, but rather check only the
9019                  *        correct HW resource/link onto which 'chan' falls,
9020                  *        as only that link leaves the channel for doing
9021                  *        the off-channel operation.
9022                  */
9023
9024                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9025                         all_ok = false;
9026         }
9027
9028         if (all_ok)
9029                 return true;
9030
9031         return regulatory_pre_cac_allowed(wdev->wiphy);
9032 }
9033
9034 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9035                                     enum nl80211_ext_feature_index feat)
9036 {
9037         if (!(flags & flag))
9038                 return true;
9039         if (wiphy_ext_feature_isset(wiphy, feat))
9040                 return true;
9041         return false;
9042 }
9043
9044 static int
9045 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9046                          void *request, struct nlattr **attrs,
9047                          bool is_sched_scan)
9048 {
9049         u8 *mac_addr, *mac_addr_mask;
9050         u32 *flags;
9051         enum nl80211_feature_flags randomness_flag;
9052
9053         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9054                 return 0;
9055
9056         if (is_sched_scan) {
9057                 struct cfg80211_sched_scan_request *req = request;
9058
9059                 randomness_flag = wdev ?
9060                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9061                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9062                 flags = &req->flags;
9063                 mac_addr = req->mac_addr;
9064                 mac_addr_mask = req->mac_addr_mask;
9065         } else {
9066                 struct cfg80211_scan_request *req = request;
9067
9068                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9069                 flags = &req->flags;
9070                 mac_addr = req->mac_addr;
9071                 mac_addr_mask = req->mac_addr_mask;
9072         }
9073
9074         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9075
9076         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9077              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9078             !nl80211_check_scan_feat(wiphy, *flags,
9079                                      NL80211_SCAN_FLAG_LOW_SPAN,
9080                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9081             !nl80211_check_scan_feat(wiphy, *flags,
9082                                      NL80211_SCAN_FLAG_LOW_POWER,
9083                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9084             !nl80211_check_scan_feat(wiphy, *flags,
9085                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9086                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9087             !nl80211_check_scan_feat(wiphy, *flags,
9088                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9089                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9090             !nl80211_check_scan_feat(wiphy, *flags,
9091                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9092                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9093             !nl80211_check_scan_feat(wiphy, *flags,
9094                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9095                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9096             !nl80211_check_scan_feat(wiphy, *flags,
9097                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9098                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9099             !nl80211_check_scan_feat(wiphy, *flags,
9100                                      NL80211_SCAN_FLAG_RANDOM_SN,
9101                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9102             !nl80211_check_scan_feat(wiphy, *flags,
9103                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9104                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9105                 return -EOPNOTSUPP;
9106
9107         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9108                 int err;
9109
9110                 if (!(wiphy->features & randomness_flag) ||
9111                     (wdev && wdev->connected))
9112                         return -EOPNOTSUPP;
9113
9114                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9115                 if (err)
9116                         return err;
9117         }
9118
9119         return 0;
9120 }
9121
9122 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9123 {
9124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9125         struct wireless_dev *wdev = info->user_ptr[1];
9126         struct cfg80211_scan_request *request;
9127         struct nlattr *scan_freqs = NULL;
9128         bool scan_freqs_khz = false;
9129         struct nlattr *attr;
9130         struct wiphy *wiphy;
9131         int err, tmp, n_ssids = 0, n_channels, i;
9132         size_t ie_len, size;
9133
9134         wiphy = &rdev->wiphy;
9135
9136         if (wdev->iftype == NL80211_IFTYPE_NAN)
9137                 return -EOPNOTSUPP;
9138
9139         if (!rdev->ops->scan)
9140                 return -EOPNOTSUPP;
9141
9142         if (rdev->scan_req || rdev->scan_msg)
9143                 return -EBUSY;
9144
9145         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9146                 if (!wiphy_ext_feature_isset(wiphy,
9147                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9148                         return -EOPNOTSUPP;
9149                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9150                 scan_freqs_khz = true;
9151         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9152                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9153
9154         if (scan_freqs) {
9155                 n_channels = validate_scan_freqs(scan_freqs);
9156                 if (!n_channels)
9157                         return -EINVAL;
9158         } else {
9159                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9160         }
9161
9162         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9163                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9164                         n_ssids++;
9165
9166         if (n_ssids > wiphy->max_scan_ssids)
9167                 return -EINVAL;
9168
9169         if (info->attrs[NL80211_ATTR_IE])
9170                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9171         else
9172                 ie_len = 0;
9173
9174         if (ie_len > wiphy->max_scan_ie_len)
9175                 return -EINVAL;
9176
9177         size = struct_size(request, channels, n_channels);
9178         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9179         size = size_add(size, ie_len);
9180         request = kzalloc(size, GFP_KERNEL);
9181         if (!request)
9182                 return -ENOMEM;
9183
9184         if (n_ssids)
9185                 request->ssids = (void *)&request->channels[n_channels];
9186         request->n_ssids = n_ssids;
9187         if (ie_len) {
9188                 if (n_ssids)
9189                         request->ie = (void *)(request->ssids + n_ssids);
9190                 else
9191                         request->ie = (void *)(request->channels + n_channels);
9192         }
9193
9194         i = 0;
9195         if (scan_freqs) {
9196                 /* user specified, bail out if channel not found */
9197                 nla_for_each_nested(attr, scan_freqs, tmp) {
9198                         struct ieee80211_channel *chan;
9199                         int freq = nla_get_u32(attr);
9200
9201                         if (!scan_freqs_khz)
9202                                 freq = MHZ_TO_KHZ(freq);
9203
9204                         chan = ieee80211_get_channel_khz(wiphy, freq);
9205                         if (!chan) {
9206                                 err = -EINVAL;
9207                                 goto out_free;
9208                         }
9209
9210                         /* ignore disabled channels */
9211                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9212                                 continue;
9213
9214                         request->channels[i] = chan;
9215                         i++;
9216                 }
9217         } else {
9218                 enum nl80211_band band;
9219
9220                 /* all channels */
9221                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9222                         int j;
9223
9224                         if (!wiphy->bands[band])
9225                                 continue;
9226                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9227                                 struct ieee80211_channel *chan;
9228
9229                                 chan = &wiphy->bands[band]->channels[j];
9230
9231                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9232                                         continue;
9233
9234                                 request->channels[i] = chan;
9235                                 i++;
9236                         }
9237                 }
9238         }
9239
9240         if (!i) {
9241                 err = -EINVAL;
9242                 goto out_free;
9243         }
9244
9245         request->n_channels = i;
9246
9247         wdev_lock(wdev);
9248         for (i = 0; i < request->n_channels; i++) {
9249                 struct ieee80211_channel *chan = request->channels[i];
9250
9251                 /* if we can go off-channel to the target channel we're good */
9252                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9253                         continue;
9254
9255                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9256                         wdev_unlock(wdev);
9257                         err = -EBUSY;
9258                         goto out_free;
9259                 }
9260         }
9261         wdev_unlock(wdev);
9262
9263         i = 0;
9264         if (n_ssids) {
9265                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9266                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9267                                 err = -EINVAL;
9268                                 goto out_free;
9269                         }
9270                         request->ssids[i].ssid_len = nla_len(attr);
9271                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9272                         i++;
9273                 }
9274         }
9275
9276         if (info->attrs[NL80211_ATTR_IE]) {
9277                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9278                 memcpy((void *)request->ie,
9279                        nla_data(info->attrs[NL80211_ATTR_IE]),
9280                        request->ie_len);
9281         }
9282
9283         for (i = 0; i < NUM_NL80211_BANDS; i++)
9284                 if (wiphy->bands[i])
9285                         request->rates[i] =
9286                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9287
9288         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9289                 nla_for_each_nested(attr,
9290                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9291                                     tmp) {
9292                         enum nl80211_band band = nla_type(attr);
9293
9294                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9295                                 err = -EINVAL;
9296                                 goto out_free;
9297                         }
9298
9299                         if (!wiphy->bands[band])
9300                                 continue;
9301
9302                         err = ieee80211_get_ratemask(wiphy->bands[band],
9303                                                      nla_data(attr),
9304                                                      nla_len(attr),
9305                                                      &request->rates[band]);
9306                         if (err)
9307                                 goto out_free;
9308                 }
9309         }
9310
9311         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9312                 request->duration =
9313                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9314                 request->duration_mandatory =
9315                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9316         }
9317
9318         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9319                                        false);
9320         if (err)
9321                 goto out_free;
9322
9323         request->no_cck =
9324                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9325
9326         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9327          * BSSID to scan for. This was problematic because that same attribute
9328          * was already used for another purpose (local random MAC address). The
9329          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9330          * compatibility with older userspace components, also use the
9331          * NL80211_ATTR_MAC value here if it can be determined to be used for
9332          * the specific BSSID use case instead of the random MAC address
9333          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9334          */
9335         if (info->attrs[NL80211_ATTR_BSSID])
9336                 memcpy(request->bssid,
9337                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9338         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9339                  info->attrs[NL80211_ATTR_MAC])
9340                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9341                        ETH_ALEN);
9342         else
9343                 eth_broadcast_addr(request->bssid);
9344
9345         request->wdev = wdev;
9346         request->wiphy = &rdev->wiphy;
9347         request->scan_start = jiffies;
9348
9349         rdev->scan_req = request;
9350         err = cfg80211_scan(rdev);
9351
9352         if (err)
9353                 goto out_free;
9354
9355         nl80211_send_scan_start(rdev, wdev);
9356         dev_hold(wdev->netdev);
9357
9358         return 0;
9359
9360  out_free:
9361         rdev->scan_req = NULL;
9362         kfree(request);
9363
9364         return err;
9365 }
9366
9367 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9368 {
9369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9370         struct wireless_dev *wdev = info->user_ptr[1];
9371
9372         if (!rdev->ops->abort_scan)
9373                 return -EOPNOTSUPP;
9374
9375         if (rdev->scan_msg)
9376                 return 0;
9377
9378         if (!rdev->scan_req)
9379                 return -ENOENT;
9380
9381         rdev_abort_scan(rdev, wdev);
9382         return 0;
9383 }
9384
9385 static int
9386 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9387                                struct cfg80211_sched_scan_request *request,
9388                                struct nlattr **attrs)
9389 {
9390         int tmp, err, i = 0;
9391         struct nlattr *attr;
9392
9393         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9394                 u32 interval;
9395
9396                 /*
9397                  * If scan plans are not specified,
9398                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9399                  * case one scan plan will be set with the specified scan
9400                  * interval and infinite number of iterations.
9401                  */
9402                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9403                 if (!interval)
9404                         return -EINVAL;
9405
9406                 request->scan_plans[0].interval =
9407                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9408                 if (!request->scan_plans[0].interval)
9409                         return -EINVAL;
9410
9411                 if (request->scan_plans[0].interval >
9412                     wiphy->max_sched_scan_plan_interval)
9413                         request->scan_plans[0].interval =
9414                                 wiphy->max_sched_scan_plan_interval;
9415
9416                 return 0;
9417         }
9418
9419         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9420                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9421
9422                 if (WARN_ON(i >= n_plans))
9423                         return -EINVAL;
9424
9425                 err = nla_parse_nested_deprecated(plan,
9426                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9427                                                   attr, nl80211_plan_policy,
9428                                                   NULL);
9429                 if (err)
9430                         return err;
9431
9432                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9433                         return -EINVAL;
9434
9435                 request->scan_plans[i].interval =
9436                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9437                 if (!request->scan_plans[i].interval ||
9438                     request->scan_plans[i].interval >
9439                     wiphy->max_sched_scan_plan_interval)
9440                         return -EINVAL;
9441
9442                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9443                         request->scan_plans[i].iterations =
9444                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9445                         if (!request->scan_plans[i].iterations ||
9446                             (request->scan_plans[i].iterations >
9447                              wiphy->max_sched_scan_plan_iterations))
9448                                 return -EINVAL;
9449                 } else if (i < n_plans - 1) {
9450                         /*
9451                          * All scan plans but the last one must specify
9452                          * a finite number of iterations
9453                          */
9454                         return -EINVAL;
9455                 }
9456
9457                 i++;
9458         }
9459
9460         /*
9461          * The last scan plan must not specify the number of
9462          * iterations, it is supposed to run infinitely
9463          */
9464         if (request->scan_plans[n_plans - 1].iterations)
9465                 return  -EINVAL;
9466
9467         return 0;
9468 }
9469
9470 static int
9471 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9472                                        struct cfg80211_match_set *match_sets,
9473                                        struct nlattr *tb_band_rssi,
9474                                        s32 rssi_thold)
9475 {
9476         struct nlattr *attr;
9477         int i, tmp, ret = 0;
9478
9479         if (!wiphy_ext_feature_isset(wiphy,
9480                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9481                 if (tb_band_rssi)
9482                         ret = -EOPNOTSUPP;
9483                 else
9484                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9485                                 match_sets->per_band_rssi_thold[i] =
9486                                         NL80211_SCAN_RSSI_THOLD_OFF;
9487                 return ret;
9488         }
9489
9490         for (i = 0; i < NUM_NL80211_BANDS; i++)
9491                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9492
9493         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9494                 enum nl80211_band band = nla_type(attr);
9495
9496                 if (band < 0 || band >= NUM_NL80211_BANDS)
9497                         return -EINVAL;
9498
9499                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9500         }
9501
9502         return 0;
9503 }
9504
9505 static struct cfg80211_sched_scan_request *
9506 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9507                          struct nlattr **attrs, int max_match_sets)
9508 {
9509         struct cfg80211_sched_scan_request *request;
9510         struct nlattr *attr;
9511         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9512         enum nl80211_band band;
9513         size_t ie_len, size;
9514         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9515         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9516
9517         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9518                 n_channels = validate_scan_freqs(
9519                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9520                 if (!n_channels)
9521                         return ERR_PTR(-EINVAL);
9522         } else {
9523                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9524         }
9525
9526         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9527                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9528                                     tmp)
9529                         n_ssids++;
9530
9531         if (n_ssids > wiphy->max_sched_scan_ssids)
9532                 return ERR_PTR(-EINVAL);
9533
9534         /*
9535          * First, count the number of 'real' matchsets. Due to an issue with
9536          * the old implementation, matchsets containing only the RSSI attribute
9537          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9538          * RSSI for all matchsets, rather than their own matchset for reporting
9539          * all APs with a strong RSSI. This is needed to be compatible with
9540          * older userspace that treated a matchset with only the RSSI as the
9541          * global RSSI for all other matchsets - if there are other matchsets.
9542          */
9543         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9544                 nla_for_each_nested(attr,
9545                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9546                                     tmp) {
9547                         struct nlattr *rssi;
9548
9549                         err = nla_parse_nested_deprecated(tb,
9550                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9551                                                           attr,
9552                                                           nl80211_match_policy,
9553                                                           NULL);
9554                         if (err)
9555                                 return ERR_PTR(err);
9556
9557                         /* SSID and BSSID are mutually exclusive */
9558                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9559                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9560                                 return ERR_PTR(-EINVAL);
9561
9562                         /* add other standalone attributes here */
9563                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9564                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9565                                 n_match_sets++;
9566                                 continue;
9567                         }
9568                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9569                         if (rssi)
9570                                 default_match_rssi = nla_get_s32(rssi);
9571                 }
9572         }
9573
9574         /* However, if there's no other matchset, add the RSSI one */
9575         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9576                 n_match_sets = 1;
9577
9578         if (n_match_sets > max_match_sets)
9579                 return ERR_PTR(-EINVAL);
9580
9581         if (attrs[NL80211_ATTR_IE])
9582                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9583         else
9584                 ie_len = 0;
9585
9586         if (ie_len > wiphy->max_sched_scan_ie_len)
9587                 return ERR_PTR(-EINVAL);
9588
9589         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9590                 /*
9591                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9592                  * each scan plan already specifies its own interval
9593                  */
9594                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9595                         return ERR_PTR(-EINVAL);
9596
9597                 nla_for_each_nested(attr,
9598                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9599                         n_plans++;
9600         } else {
9601                 /*
9602                  * The scan interval attribute is kept for backward
9603                  * compatibility. If no scan plans are specified and sched scan
9604                  * interval is specified, one scan plan will be set with this
9605                  * scan interval and infinite number of iterations.
9606                  */
9607                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9608                         return ERR_PTR(-EINVAL);
9609
9610                 n_plans = 1;
9611         }
9612
9613         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9614                 return ERR_PTR(-EINVAL);
9615
9616         if (!wiphy_ext_feature_isset(
9617                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9618             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9619              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9620                 return ERR_PTR(-EINVAL);
9621
9622         size = struct_size(request, channels, n_channels);
9623         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9624         size = size_add(size, array_size(sizeof(*request->match_sets),
9625                                          n_match_sets));
9626         size = size_add(size, array_size(sizeof(*request->scan_plans),
9627                                          n_plans));
9628         size = size_add(size, ie_len);
9629         request = kzalloc(size, GFP_KERNEL);
9630         if (!request)
9631                 return ERR_PTR(-ENOMEM);
9632
9633         if (n_ssids)
9634                 request->ssids = (void *)&request->channels[n_channels];
9635         request->n_ssids = n_ssids;
9636         if (ie_len) {
9637                 if (n_ssids)
9638                         request->ie = (void *)(request->ssids + n_ssids);
9639                 else
9640                         request->ie = (void *)(request->channels + n_channels);
9641         }
9642
9643         if (n_match_sets) {
9644                 if (request->ie)
9645                         request->match_sets = (void *)(request->ie + ie_len);
9646                 else if (n_ssids)
9647                         request->match_sets =
9648                                 (void *)(request->ssids + n_ssids);
9649                 else
9650                         request->match_sets =
9651                                 (void *)(request->channels + n_channels);
9652         }
9653         request->n_match_sets = n_match_sets;
9654
9655         if (n_match_sets)
9656                 request->scan_plans = (void *)(request->match_sets +
9657                                                n_match_sets);
9658         else if (request->ie)
9659                 request->scan_plans = (void *)(request->ie + ie_len);
9660         else if (n_ssids)
9661                 request->scan_plans = (void *)(request->ssids + n_ssids);
9662         else
9663                 request->scan_plans = (void *)(request->channels + n_channels);
9664
9665         request->n_scan_plans = n_plans;
9666
9667         i = 0;
9668         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9669                 /* user specified, bail out if channel not found */
9670                 nla_for_each_nested(attr,
9671                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9672                                     tmp) {
9673                         struct ieee80211_channel *chan;
9674
9675                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9676
9677                         if (!chan) {
9678                                 err = -EINVAL;
9679                                 goto out_free;
9680                         }
9681
9682                         /* ignore disabled channels */
9683                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9684                                 continue;
9685
9686                         request->channels[i] = chan;
9687                         i++;
9688                 }
9689         } else {
9690                 /* all channels */
9691                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9692                         int j;
9693
9694                         if (!wiphy->bands[band])
9695                                 continue;
9696                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9697                                 struct ieee80211_channel *chan;
9698
9699                                 chan = &wiphy->bands[band]->channels[j];
9700
9701                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9702                                         continue;
9703
9704                                 request->channels[i] = chan;
9705                                 i++;
9706                         }
9707                 }
9708         }
9709
9710         if (!i) {
9711                 err = -EINVAL;
9712                 goto out_free;
9713         }
9714
9715         request->n_channels = i;
9716
9717         i = 0;
9718         if (n_ssids) {
9719                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9720                                     tmp) {
9721                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9722                                 err = -EINVAL;
9723                                 goto out_free;
9724                         }
9725                         request->ssids[i].ssid_len = nla_len(attr);
9726                         memcpy(request->ssids[i].ssid, nla_data(attr),
9727                                nla_len(attr));
9728                         i++;
9729                 }
9730         }
9731
9732         i = 0;
9733         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9734                 nla_for_each_nested(attr,
9735                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9736                                     tmp) {
9737                         struct nlattr *ssid, *bssid, *rssi;
9738
9739                         err = nla_parse_nested_deprecated(tb,
9740                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9741                                                           attr,
9742                                                           nl80211_match_policy,
9743                                                           NULL);
9744                         if (err)
9745                                 goto out_free;
9746                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9747                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9748
9749                         if (!ssid && !bssid) {
9750                                 i++;
9751                                 continue;
9752                         }
9753
9754                         if (WARN_ON(i >= n_match_sets)) {
9755                                 /* this indicates a programming error,
9756                                  * the loop above should have verified
9757                                  * things properly
9758                                  */
9759                                 err = -EINVAL;
9760                                 goto out_free;
9761                         }
9762
9763                         if (ssid) {
9764                                 memcpy(request->match_sets[i].ssid.ssid,
9765                                        nla_data(ssid), nla_len(ssid));
9766                                 request->match_sets[i].ssid.ssid_len =
9767                                         nla_len(ssid);
9768                         }
9769                         if (bssid)
9770                                 memcpy(request->match_sets[i].bssid,
9771                                        nla_data(bssid), ETH_ALEN);
9772
9773                         /* special attribute - old implementation w/a */
9774                         request->match_sets[i].rssi_thold = default_match_rssi;
9775                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9776                         if (rssi)
9777                                 request->match_sets[i].rssi_thold =
9778                                         nla_get_s32(rssi);
9779
9780                         /* Parse per band RSSI attribute */
9781                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9782                                 &request->match_sets[i],
9783                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9784                                 request->match_sets[i].rssi_thold);
9785                         if (err)
9786                                 goto out_free;
9787
9788                         i++;
9789                 }
9790
9791                 /* there was no other matchset, so the RSSI one is alone */
9792                 if (i == 0 && n_match_sets)
9793                         request->match_sets[0].rssi_thold = default_match_rssi;
9794
9795                 request->min_rssi_thold = INT_MAX;
9796                 for (i = 0; i < n_match_sets; i++)
9797                         request->min_rssi_thold =
9798                                 min(request->match_sets[i].rssi_thold,
9799                                     request->min_rssi_thold);
9800         } else {
9801                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9802         }
9803
9804         if (ie_len) {
9805                 request->ie_len = ie_len;
9806                 memcpy((void *)request->ie,
9807                        nla_data(attrs[NL80211_ATTR_IE]),
9808                        request->ie_len);
9809         }
9810
9811         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9812         if (err)
9813                 goto out_free;
9814
9815         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9816                 request->delay =
9817                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9818
9819         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9820                 request->relative_rssi = nla_get_s8(
9821                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9822                 request->relative_rssi_set = true;
9823         }
9824
9825         if (request->relative_rssi_set &&
9826             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9827                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9828
9829                 rssi_adjust = nla_data(
9830                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9831                 request->rssi_adjust.band = rssi_adjust->band;
9832                 request->rssi_adjust.delta = rssi_adjust->delta;
9833                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9834                         err = -EINVAL;
9835                         goto out_free;
9836                 }
9837         }
9838
9839         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9840         if (err)
9841                 goto out_free;
9842
9843         request->scan_start = jiffies;
9844
9845         return request;
9846
9847 out_free:
9848         kfree(request);
9849         return ERR_PTR(err);
9850 }
9851
9852 static int nl80211_start_sched_scan(struct sk_buff *skb,
9853                                     struct genl_info *info)
9854 {
9855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9856         struct net_device *dev = info->user_ptr[1];
9857         struct wireless_dev *wdev = dev->ieee80211_ptr;
9858         struct cfg80211_sched_scan_request *sched_scan_req;
9859         bool want_multi;
9860         int err;
9861
9862         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9863                 return -EOPNOTSUPP;
9864
9865         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9866         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9867         if (err)
9868                 return err;
9869
9870         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9871                                                   info->attrs,
9872                                                   rdev->wiphy.max_match_sets);
9873
9874         err = PTR_ERR_OR_ZERO(sched_scan_req);
9875         if (err)
9876                 goto out_err;
9877
9878         /* leave request id zero for legacy request
9879          * or if driver does not support multi-scheduled scan
9880          */
9881         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9882                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9883
9884         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9885         if (err)
9886                 goto out_free;
9887
9888         sched_scan_req->dev = dev;
9889         sched_scan_req->wiphy = &rdev->wiphy;
9890
9891         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9892                 sched_scan_req->owner_nlportid = info->snd_portid;
9893
9894         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9895
9896         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9897         return 0;
9898
9899 out_free:
9900         kfree(sched_scan_req);
9901 out_err:
9902         return err;
9903 }
9904
9905 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9906                                    struct genl_info *info)
9907 {
9908         struct cfg80211_sched_scan_request *req;
9909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9910         u64 cookie;
9911
9912         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9913                 return -EOPNOTSUPP;
9914
9915         if (info->attrs[NL80211_ATTR_COOKIE]) {
9916                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9917                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9918         }
9919
9920         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9921                                      struct cfg80211_sched_scan_request,
9922                                      list);
9923         if (!req || req->reqid ||
9924             (req->owner_nlportid &&
9925              req->owner_nlportid != info->snd_portid))
9926                 return -ENOENT;
9927
9928         return cfg80211_stop_sched_scan_req(rdev, req, false);
9929 }
9930
9931 static int nl80211_start_radar_detection(struct sk_buff *skb,
9932                                          struct genl_info *info)
9933 {
9934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9935         struct net_device *dev = info->user_ptr[1];
9936         struct wireless_dev *wdev = dev->ieee80211_ptr;
9937         struct wiphy *wiphy = wdev->wiphy;
9938         struct cfg80211_chan_def chandef;
9939         enum nl80211_dfs_regions dfs_region;
9940         unsigned int cac_time_ms;
9941         int err = -EINVAL;
9942
9943         flush_delayed_work(&rdev->dfs_update_channels_wk);
9944
9945         wiphy_lock(wiphy);
9946
9947         dfs_region = reg_get_dfs_region(wiphy);
9948         if (dfs_region == NL80211_DFS_UNSET)
9949                 goto unlock;
9950
9951         err = nl80211_parse_chandef(rdev, info, &chandef);
9952         if (err)
9953                 goto unlock;
9954
9955         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9956         if (err < 0)
9957                 goto unlock;
9958
9959         if (err == 0) {
9960                 err = -EINVAL;
9961                 goto unlock;
9962         }
9963
9964         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9965                 err = -EINVAL;
9966                 goto unlock;
9967         }
9968
9969         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9970                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9971                                                                 &chandef);
9972                 goto unlock;
9973         }
9974
9975         if (netif_carrier_ok(dev)) {
9976                 err = -EBUSY;
9977                 goto unlock;
9978         }
9979
9980         if (wdev->cac_started) {
9981                 err = -EBUSY;
9982                 goto unlock;
9983         }
9984
9985         /* CAC start is offloaded to HW and can't be started manually */
9986         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9987                 err = -EOPNOTSUPP;
9988                 goto unlock;
9989         }
9990
9991         if (!rdev->ops->start_radar_detection) {
9992                 err = -EOPNOTSUPP;
9993                 goto unlock;
9994         }
9995
9996         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9997         if (WARN_ON(!cac_time_ms))
9998                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9999
10000         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10001         if (!err) {
10002                 wdev->links[0].ap.chandef = chandef;
10003                 wdev->cac_started = true;
10004                 wdev->cac_start_time = jiffies;
10005                 wdev->cac_time_ms = cac_time_ms;
10006         }
10007 unlock:
10008         wiphy_unlock(wiphy);
10009
10010         return err;
10011 }
10012
10013 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10014                                           struct genl_info *info)
10015 {
10016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10017         struct net_device *dev = info->user_ptr[1];
10018         struct wireless_dev *wdev = dev->ieee80211_ptr;
10019         struct wiphy *wiphy = wdev->wiphy;
10020         struct cfg80211_chan_def chandef;
10021         enum nl80211_dfs_regions dfs_region;
10022         int err;
10023
10024         dfs_region = reg_get_dfs_region(wiphy);
10025         if (dfs_region == NL80211_DFS_UNSET) {
10026                 GENL_SET_ERR_MSG(info,
10027                                  "DFS Region is not set. Unexpected Radar indication");
10028                 return -EINVAL;
10029         }
10030
10031         err = nl80211_parse_chandef(rdev, info, &chandef);
10032         if (err) {
10033                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10034                 return err;
10035         }
10036
10037         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10038         if (err < 0) {
10039                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10040                 return err;
10041         }
10042
10043         if (err == 0) {
10044                 GENL_SET_ERR_MSG(info,
10045                                  "Unexpected Radar indication for chandef/iftype");
10046                 return -EINVAL;
10047         }
10048
10049         /* Do not process this notification if radar is already detected
10050          * by kernel on this channel, and return success.
10051          */
10052         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10053                 return 0;
10054
10055         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10056
10057         cfg80211_sched_dfs_chan_update(rdev);
10058
10059         rdev->radar_chandef = chandef;
10060
10061         /* Propagate this notification to other radios as well */
10062         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10063
10064         return 0;
10065 }
10066
10067 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10068 {
10069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10070         unsigned int link_id = nl80211_link_id(info->attrs);
10071         struct net_device *dev = info->user_ptr[1];
10072         struct wireless_dev *wdev = dev->ieee80211_ptr;
10073         struct cfg80211_csa_settings params;
10074         struct nlattr **csa_attrs = NULL;
10075         int err;
10076         bool need_new_beacon = false;
10077         bool need_handle_dfs_flag = true;
10078         int len, i;
10079         u32 cs_count;
10080
10081         if (!rdev->ops->channel_switch ||
10082             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10083                 return -EOPNOTSUPP;
10084
10085         switch (dev->ieee80211_ptr->iftype) {
10086         case NL80211_IFTYPE_AP:
10087         case NL80211_IFTYPE_P2P_GO:
10088                 need_new_beacon = true;
10089                 /* For all modes except AP the handle_dfs flag needs to be
10090                  * supplied to tell the kernel that userspace will handle radar
10091                  * events when they happen. Otherwise a switch to a channel
10092                  * requiring DFS will be rejected.
10093                  */
10094                 need_handle_dfs_flag = false;
10095
10096                 /* useless if AP is not running */
10097                 if (!wdev->links[link_id].ap.beacon_interval)
10098                         return -ENOTCONN;
10099                 break;
10100         case NL80211_IFTYPE_ADHOC:
10101                 if (!wdev->u.ibss.ssid_len)
10102                         return -ENOTCONN;
10103                 break;
10104         case NL80211_IFTYPE_MESH_POINT:
10105                 if (!wdev->u.mesh.id_len)
10106                         return -ENOTCONN;
10107                 break;
10108         default:
10109                 return -EOPNOTSUPP;
10110         }
10111
10112         memset(&params, 0, sizeof(params));
10113         params.beacon_csa.ftm_responder = -1;
10114
10115         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10116             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10117                 return -EINVAL;
10118
10119         /* only important for AP, IBSS and mesh create IEs internally */
10120         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10121                 return -EINVAL;
10122
10123         /* Even though the attribute is u32, the specification says
10124          * u8, so let's make sure we don't overflow.
10125          */
10126         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10127         if (cs_count > 255)
10128                 return -EINVAL;
10129
10130         params.count = cs_count;
10131
10132         if (!need_new_beacon)
10133                 goto skip_beacons;
10134
10135         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10136                                    info->extack);
10137         if (err)
10138                 goto free;
10139
10140         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10141                             GFP_KERNEL);
10142         if (!csa_attrs) {
10143                 err = -ENOMEM;
10144                 goto free;
10145         }
10146
10147         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10148                                           info->attrs[NL80211_ATTR_CSA_IES],
10149                                           nl80211_policy, info->extack);
10150         if (err)
10151                 goto free;
10152
10153         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10154                                    info->extack);
10155         if (err)
10156                 goto free;
10157
10158         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10159                 err = -EINVAL;
10160                 goto free;
10161         }
10162
10163         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10164         if (!len || (len % sizeof(u16))) {
10165                 err = -EINVAL;
10166                 goto free;
10167         }
10168
10169         params.n_counter_offsets_beacon = len / sizeof(u16);
10170         if (rdev->wiphy.max_num_csa_counters &&
10171             (params.n_counter_offsets_beacon >
10172              rdev->wiphy.max_num_csa_counters)) {
10173                 err = -EINVAL;
10174                 goto free;
10175         }
10176
10177         params.counter_offsets_beacon =
10178                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10179
10180         /* sanity checks - counters should fit and be the same */
10181         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10182                 u16 offset = params.counter_offsets_beacon[i];
10183
10184                 if (offset >= params.beacon_csa.tail_len) {
10185                         err = -EINVAL;
10186                         goto free;
10187                 }
10188
10189                 if (params.beacon_csa.tail[offset] != params.count) {
10190                         err = -EINVAL;
10191                         goto free;
10192                 }
10193         }
10194
10195         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10196                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10197                 if (!len || (len % sizeof(u16))) {
10198                         err = -EINVAL;
10199                         goto free;
10200                 }
10201
10202                 params.n_counter_offsets_presp = len / sizeof(u16);
10203                 if (rdev->wiphy.max_num_csa_counters &&
10204                     (params.n_counter_offsets_presp >
10205                      rdev->wiphy.max_num_csa_counters)) {
10206                         err = -EINVAL;
10207                         goto free;
10208                 }
10209
10210                 params.counter_offsets_presp =
10211                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10212
10213                 /* sanity checks - counters should fit and be the same */
10214                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10215                         u16 offset = params.counter_offsets_presp[i];
10216
10217                         if (offset >= params.beacon_csa.probe_resp_len) {
10218                                 err = -EINVAL;
10219                                 goto free;
10220                         }
10221
10222                         if (params.beacon_csa.probe_resp[offset] !=
10223                             params.count) {
10224                                 err = -EINVAL;
10225                                 goto free;
10226                         }
10227                 }
10228         }
10229
10230 skip_beacons:
10231         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10232         if (err)
10233                 goto free;
10234
10235         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10236                                            wdev->iftype)) {
10237                 err = -EINVAL;
10238                 goto free;
10239         }
10240
10241         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10242                                             &params.chandef,
10243                                             wdev->iftype);
10244         if (err < 0)
10245                 goto free;
10246
10247         if (err > 0) {
10248                 params.radar_required = true;
10249                 if (need_handle_dfs_flag &&
10250                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10251                         err = -EINVAL;
10252                         goto free;
10253                 }
10254         }
10255
10256         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10257                 params.block_tx = true;
10258
10259         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10260                 err = nl80211_parse_punct_bitmap(rdev, info,
10261                                                  &params.chandef,
10262                                                  &params.punct_bitmap);
10263                 if (err)
10264                         goto free;
10265         }
10266
10267         wdev_lock(wdev);
10268         err = rdev_channel_switch(rdev, dev, &params);
10269         wdev_unlock(wdev);
10270
10271 free:
10272         kfree(params.beacon_after.mbssid_ies);
10273         kfree(params.beacon_csa.mbssid_ies);
10274         kfree(params.beacon_after.rnr_ies);
10275         kfree(params.beacon_csa.rnr_ies);
10276         kfree(csa_attrs);
10277         return err;
10278 }
10279
10280 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10281                             u32 seq, int flags,
10282                             struct cfg80211_registered_device *rdev,
10283                             struct wireless_dev *wdev,
10284                             struct cfg80211_internal_bss *intbss)
10285 {
10286         struct cfg80211_bss *res = &intbss->pub;
10287         const struct cfg80211_bss_ies *ies;
10288         unsigned int link_id;
10289         void *hdr;
10290         struct nlattr *bss;
10291
10292         ASSERT_WDEV_LOCK(wdev);
10293
10294         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10295                              NL80211_CMD_NEW_SCAN_RESULTS);
10296         if (!hdr)
10297                 return -1;
10298
10299         genl_dump_check_consistent(cb, hdr);
10300
10301         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10302                 goto nla_put_failure;
10303         if (wdev->netdev &&
10304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10305                 goto nla_put_failure;
10306         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10307                               NL80211_ATTR_PAD))
10308                 goto nla_put_failure;
10309
10310         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10311         if (!bss)
10312                 goto nla_put_failure;
10313         if ((!is_zero_ether_addr(res->bssid) &&
10314              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10315                 goto nla_put_failure;
10316
10317         rcu_read_lock();
10318         /* indicate whether we have probe response data or not */
10319         if (rcu_access_pointer(res->proberesp_ies) &&
10320             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10321                 goto fail_unlock_rcu;
10322
10323         /* this pointer prefers to be pointed to probe response data
10324          * but is always valid
10325          */
10326         ies = rcu_dereference(res->ies);
10327         if (ies) {
10328                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10329                                       NL80211_BSS_PAD))
10330                         goto fail_unlock_rcu;
10331                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10332                                         ies->len, ies->data))
10333                         goto fail_unlock_rcu;
10334         }
10335
10336         /* and this pointer is always (unless driver didn't know) beacon data */
10337         ies = rcu_dereference(res->beacon_ies);
10338         if (ies && ies->from_beacon) {
10339                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10340                                       NL80211_BSS_PAD))
10341                         goto fail_unlock_rcu;
10342                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10343                                         ies->len, ies->data))
10344                         goto fail_unlock_rcu;
10345         }
10346         rcu_read_unlock();
10347
10348         if (res->beacon_interval &&
10349             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10350                 goto nla_put_failure;
10351         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10352             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10353             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10354                         res->channel->freq_offset) ||
10355             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10356             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10357                         jiffies_to_msecs(jiffies - intbss->ts)))
10358                 goto nla_put_failure;
10359
10360         if (intbss->parent_tsf &&
10361             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10362                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10363              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10364                      intbss->parent_bssid)))
10365                 goto nla_put_failure;
10366
10367         if (intbss->ts_boottime &&
10368             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10369                               intbss->ts_boottime, NL80211_BSS_PAD))
10370                 goto nla_put_failure;
10371
10372         if (!nl80211_put_signal(msg, intbss->pub.chains,
10373                                 intbss->pub.chain_signal,
10374                                 NL80211_BSS_CHAIN_SIGNAL))
10375                 goto nla_put_failure;
10376
10377         switch (rdev->wiphy.signal_type) {
10378         case CFG80211_SIGNAL_TYPE_MBM:
10379                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10380                         goto nla_put_failure;
10381                 break;
10382         case CFG80211_SIGNAL_TYPE_UNSPEC:
10383                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10384                         goto nla_put_failure;
10385                 break;
10386         default:
10387                 break;
10388         }
10389
10390         switch (wdev->iftype) {
10391         case NL80211_IFTYPE_P2P_CLIENT:
10392         case NL80211_IFTYPE_STATION:
10393                 for_each_valid_link(wdev, link_id) {
10394                         if (intbss == wdev->links[link_id].client.current_bss &&
10395                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10396                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10397                              (wdev->valid_links &&
10398                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10399                                           link_id) ||
10400                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10401                                        wdev->u.client.connected_addr)))))
10402                                 goto nla_put_failure;
10403                 }
10404                 break;
10405         case NL80211_IFTYPE_ADHOC:
10406                 if (intbss == wdev->u.ibss.current_bss &&
10407                     nla_put_u32(msg, NL80211_BSS_STATUS,
10408                                 NL80211_BSS_STATUS_IBSS_JOINED))
10409                         goto nla_put_failure;
10410                 break;
10411         default:
10412                 break;
10413         }
10414
10415         nla_nest_end(msg, bss);
10416
10417         genlmsg_end(msg, hdr);
10418         return 0;
10419
10420  fail_unlock_rcu:
10421         rcu_read_unlock();
10422  nla_put_failure:
10423         genlmsg_cancel(msg, hdr);
10424         return -EMSGSIZE;
10425 }
10426
10427 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10428 {
10429         struct cfg80211_registered_device *rdev;
10430         struct cfg80211_internal_bss *scan;
10431         struct wireless_dev *wdev;
10432         int start = cb->args[2], idx = 0;
10433         int err;
10434
10435         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10436         if (err)
10437                 return err;
10438         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10439         __acquire(&rdev->wiphy.mtx);
10440
10441         wdev_lock(wdev);
10442         spin_lock_bh(&rdev->bss_lock);
10443
10444         /*
10445          * dump_scan will be called multiple times to break up the scan results
10446          * into multiple messages.  It is unlikely that any more bss-es will be
10447          * expired after the first call, so only call only call this on the
10448          * first dump_scan invocation.
10449          */
10450         if (start == 0)
10451                 cfg80211_bss_expire(rdev);
10452
10453         cb->seq = rdev->bss_generation;
10454
10455         list_for_each_entry(scan, &rdev->bss_list, list) {
10456                 if (++idx <= start)
10457                         continue;
10458                 if (nl80211_send_bss(skb, cb,
10459                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10460                                 rdev, wdev, scan) < 0) {
10461                         idx--;
10462                         break;
10463                 }
10464         }
10465
10466         spin_unlock_bh(&rdev->bss_lock);
10467         wdev_unlock(wdev);
10468
10469         cb->args[2] = idx;
10470         wiphy_unlock(&rdev->wiphy);
10471
10472         return skb->len;
10473 }
10474
10475 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10476                                int flags, struct net_device *dev,
10477                                bool allow_radio_stats,
10478                                struct survey_info *survey)
10479 {
10480         void *hdr;
10481         struct nlattr *infoattr;
10482
10483         /* skip radio stats if userspace didn't request them */
10484         if (!survey->channel && !allow_radio_stats)
10485                 return 0;
10486
10487         hdr = nl80211hdr_put(msg, portid, seq, flags,
10488                              NL80211_CMD_NEW_SURVEY_RESULTS);
10489         if (!hdr)
10490                 return -ENOMEM;
10491
10492         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10493                 goto nla_put_failure;
10494
10495         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10496         if (!infoattr)
10497                 goto nla_put_failure;
10498
10499         if (survey->channel &&
10500             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10501                         survey->channel->center_freq))
10502                 goto nla_put_failure;
10503
10504         if (survey->channel && survey->channel->freq_offset &&
10505             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10506                         survey->channel->freq_offset))
10507                 goto nla_put_failure;
10508
10509         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10510             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10511                 goto nla_put_failure;
10512         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10513             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10514                 goto nla_put_failure;
10515         if ((survey->filled & SURVEY_INFO_TIME) &&
10516             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10517                         survey->time, NL80211_SURVEY_INFO_PAD))
10518                 goto nla_put_failure;
10519         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10520             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10521                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10522                 goto nla_put_failure;
10523         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10524             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10525                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10526                 goto nla_put_failure;
10527         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10528             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10529                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10530                 goto nla_put_failure;
10531         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10532             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10533                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10534                 goto nla_put_failure;
10535         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10536             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10537                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10538                 goto nla_put_failure;
10539         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10540             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10541                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10542                 goto nla_put_failure;
10543
10544         nla_nest_end(msg, infoattr);
10545
10546         genlmsg_end(msg, hdr);
10547         return 0;
10548
10549  nla_put_failure:
10550         genlmsg_cancel(msg, hdr);
10551         return -EMSGSIZE;
10552 }
10553
10554 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10555 {
10556         struct nlattr **attrbuf;
10557         struct survey_info survey;
10558         struct cfg80211_registered_device *rdev;
10559         struct wireless_dev *wdev;
10560         int survey_idx = cb->args[2];
10561         int res;
10562         bool radio_stats;
10563
10564         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10565         if (!attrbuf)
10566                 return -ENOMEM;
10567
10568         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10569         if (res) {
10570                 kfree(attrbuf);
10571                 return res;
10572         }
10573         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10574         __acquire(&rdev->wiphy.mtx);
10575
10576         /* prepare_wdev_dump parsed the attributes */
10577         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10578
10579         if (!wdev->netdev) {
10580                 res = -EINVAL;
10581                 goto out_err;
10582         }
10583
10584         if (!rdev->ops->dump_survey) {
10585                 res = -EOPNOTSUPP;
10586                 goto out_err;
10587         }
10588
10589         while (1) {
10590                 wdev_lock(wdev);
10591                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10592                 wdev_unlock(wdev);
10593                 if (res == -ENOENT)
10594                         break;
10595                 if (res)
10596                         goto out_err;
10597
10598                 /* don't send disabled channels, but do send non-channel data */
10599                 if (survey.channel &&
10600                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10601                         survey_idx++;
10602                         continue;
10603                 }
10604
10605                 if (nl80211_send_survey(skb,
10606                                 NETLINK_CB(cb->skb).portid,
10607                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10608                                 wdev->netdev, radio_stats, &survey) < 0)
10609                         goto out;
10610                 survey_idx++;
10611         }
10612
10613  out:
10614         cb->args[2] = survey_idx;
10615         res = skb->len;
10616  out_err:
10617         kfree(attrbuf);
10618         wiphy_unlock(&rdev->wiphy);
10619         return res;
10620 }
10621
10622 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10623 {
10624         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10625                                   NL80211_WPA_VERSION_2 |
10626                                   NL80211_WPA_VERSION_3));
10627 }
10628
10629 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10630 {
10631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10632         struct net_device *dev = info->user_ptr[1];
10633         struct ieee80211_channel *chan;
10634         const u8 *bssid, *ssid;
10635         int err, ssid_len;
10636         enum nl80211_auth_type auth_type;
10637         struct key_parse key;
10638         bool local_state_change;
10639         struct cfg80211_auth_request req = {};
10640         u32 freq;
10641
10642         if (!info->attrs[NL80211_ATTR_MAC])
10643                 return -EINVAL;
10644
10645         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10646                 return -EINVAL;
10647
10648         if (!info->attrs[NL80211_ATTR_SSID])
10649                 return -EINVAL;
10650
10651         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10652                 return -EINVAL;
10653
10654         err = nl80211_parse_key(info, &key);
10655         if (err)
10656                 return err;
10657
10658         if (key.idx >= 0) {
10659                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10660                         return -EINVAL;
10661                 if (!key.p.key || !key.p.key_len)
10662                         return -EINVAL;
10663                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10664                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10665                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10666                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10667                         return -EINVAL;
10668                 if (key.idx > 3)
10669                         return -EINVAL;
10670         } else {
10671                 key.p.key_len = 0;
10672                 key.p.key = NULL;
10673         }
10674
10675         if (key.idx >= 0) {
10676                 int i;
10677                 bool ok = false;
10678
10679                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10680                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10681                                 ok = true;
10682                                 break;
10683                         }
10684                 }
10685                 if (!ok)
10686                         return -EINVAL;
10687         }
10688
10689         if (!rdev->ops->auth)
10690                 return -EOPNOTSUPP;
10691
10692         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10693             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10694                 return -EOPNOTSUPP;
10695
10696         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10697         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10698         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10699                 freq +=
10700                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10701
10702         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10703         if (!chan)
10704                 return -EINVAL;
10705
10706         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10707         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10708
10709         if (info->attrs[NL80211_ATTR_IE]) {
10710                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10711                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10712         }
10713
10714         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10715         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10716                 return -EINVAL;
10717
10718         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10719              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10720              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10721              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10722             !info->attrs[NL80211_ATTR_AUTH_DATA])
10723                 return -EINVAL;
10724
10725         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10726                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10727                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10728                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10729                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10730                         return -EINVAL;
10731                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10732                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10733         }
10734
10735         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10736
10737         /*
10738          * Since we no longer track auth state, ignore
10739          * requests to only change local state.
10740          */
10741         if (local_state_change)
10742                 return 0;
10743
10744         req.auth_type = auth_type;
10745         req.key = key.p.key;
10746         req.key_len = key.p.key_len;
10747         req.key_idx = key.idx;
10748         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10749         if (req.link_id >= 0) {
10750                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10751                         return -EINVAL;
10752                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10753                         return -EINVAL;
10754                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10755                 if (!is_valid_ether_addr(req.ap_mld_addr))
10756                         return -EINVAL;
10757         }
10758
10759         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10760                                    IEEE80211_BSS_TYPE_ESS,
10761                                    IEEE80211_PRIVACY_ANY);
10762         if (!req.bss)
10763                 return -ENOENT;
10764
10765         wdev_lock(dev->ieee80211_ptr);
10766         err = cfg80211_mlme_auth(rdev, dev, &req);
10767         wdev_unlock(dev->ieee80211_ptr);
10768
10769         cfg80211_put_bss(&rdev->wiphy, req.bss);
10770
10771         return err;
10772 }
10773
10774 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10775                                      struct genl_info *info)
10776 {
10777         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10778                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10779                 return -EINVAL;
10780         }
10781
10782         if (!rdev->ops->tx_control_port ||
10783             !wiphy_ext_feature_isset(&rdev->wiphy,
10784                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10785                 return -EOPNOTSUPP;
10786
10787         return 0;
10788 }
10789
10790 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10791                                    struct genl_info *info,
10792                                    struct cfg80211_crypto_settings *settings,
10793                                    int cipher_limit)
10794 {
10795         memset(settings, 0, sizeof(*settings));
10796
10797         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10798
10799         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10800                 u16 proto;
10801
10802                 proto = nla_get_u16(
10803                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10804                 settings->control_port_ethertype = cpu_to_be16(proto);
10805                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10806                     proto != ETH_P_PAE)
10807                         return -EINVAL;
10808                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10809                         settings->control_port_no_encrypt = true;
10810         } else
10811                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10812
10813         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10814                 int r = validate_pae_over_nl80211(rdev, info);
10815
10816                 if (r < 0)
10817                         return r;
10818
10819                 settings->control_port_over_nl80211 = true;
10820
10821                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10822                         settings->control_port_no_preauth = true;
10823         }
10824
10825         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10826                 void *data;
10827                 int len, i;
10828
10829                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10830                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10831                 settings->n_ciphers_pairwise = len / sizeof(u32);
10832
10833                 if (len % sizeof(u32))
10834                         return -EINVAL;
10835
10836                 if (settings->n_ciphers_pairwise > cipher_limit)
10837                         return -EINVAL;
10838
10839                 memcpy(settings->ciphers_pairwise, data, len);
10840
10841                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10842                         if (!cfg80211_supported_cipher_suite(
10843                                         &rdev->wiphy,
10844                                         settings->ciphers_pairwise[i]))
10845                                 return -EINVAL;
10846         }
10847
10848         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10849                 settings->cipher_group =
10850                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10851                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10852                                                      settings->cipher_group))
10853                         return -EINVAL;
10854         }
10855
10856         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10857                 settings->wpa_versions =
10858                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10859                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10860                         return -EINVAL;
10861         }
10862
10863         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10864                 void *data;
10865                 int len;
10866
10867                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10868                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10869                 settings->n_akm_suites = len / sizeof(u32);
10870
10871                 if (len % sizeof(u32))
10872                         return -EINVAL;
10873
10874                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10875                         return -EINVAL;
10876
10877                 memcpy(settings->akm_suites, data, len);
10878         }
10879
10880         if (info->attrs[NL80211_ATTR_PMK]) {
10881                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10882                         return -EINVAL;
10883                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10884                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10885                     !wiphy_ext_feature_isset(&rdev->wiphy,
10886                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10887                         return -EINVAL;
10888                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10889         }
10890
10891         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10892                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10893                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10894                     !wiphy_ext_feature_isset(&rdev->wiphy,
10895                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10896                         return -EINVAL;
10897                 settings->sae_pwd =
10898                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10899                 settings->sae_pwd_len =
10900                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10901         }
10902
10903         if (info->attrs[NL80211_ATTR_SAE_PWE])
10904                 settings->sae_pwe =
10905                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10906         else
10907                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10908
10909         return 0;
10910 }
10911
10912 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10913                                               const u8 *ssid, int ssid_len,
10914                                               struct nlattr **attrs)
10915 {
10916         struct ieee80211_channel *chan;
10917         struct cfg80211_bss *bss;
10918         const u8 *bssid;
10919         u32 freq;
10920
10921         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10922                 return ERR_PTR(-EINVAL);
10923
10924         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10925
10926         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10927         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10928                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10929
10930         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10931         if (!chan)
10932                 return ERR_PTR(-EINVAL);
10933
10934         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10935                                ssid, ssid_len,
10936                                IEEE80211_BSS_TYPE_ESS,
10937                                IEEE80211_PRIVACY_ANY);
10938         if (!bss)
10939                 return ERR_PTR(-ENOENT);
10940
10941         return bss;
10942 }
10943
10944 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10945 {
10946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10947         struct net_device *dev = info->user_ptr[1];
10948         struct cfg80211_assoc_request req = {};
10949         struct nlattr **attrs = NULL;
10950         const u8 *ap_addr, *ssid;
10951         unsigned int link_id;
10952         int err, ssid_len;
10953
10954         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10955             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10956                 return -EPERM;
10957
10958         if (!info->attrs[NL80211_ATTR_SSID])
10959                 return -EINVAL;
10960
10961         if (!rdev->ops->assoc)
10962                 return -EOPNOTSUPP;
10963
10964         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10965             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10966                 return -EOPNOTSUPP;
10967
10968         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10969         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10970
10971         if (info->attrs[NL80211_ATTR_IE]) {
10972                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10973                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10974
10975                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10976                                            req.ie, req.ie_len)) {
10977                         GENL_SET_ERR_MSG(info,
10978                                          "non-inheritance makes no sense");
10979                         return -EINVAL;
10980                 }
10981         }
10982
10983         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10984                 enum nl80211_mfp mfp =
10985                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10986                 if (mfp == NL80211_MFP_REQUIRED)
10987                         req.use_mfp = true;
10988                 else if (mfp != NL80211_MFP_NO)
10989                         return -EINVAL;
10990         }
10991
10992         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10993                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10994
10995         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10996                 req.flags |= ASSOC_REQ_DISABLE_HT;
10997
10998         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10999                 memcpy(&req.ht_capa_mask,
11000                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11001                        sizeof(req.ht_capa_mask));
11002
11003         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11004                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11005                         return -EINVAL;
11006                 memcpy(&req.ht_capa,
11007                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11008                        sizeof(req.ht_capa));
11009         }
11010
11011         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11012                 req.flags |= ASSOC_REQ_DISABLE_VHT;
11013
11014         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11015                 req.flags |= ASSOC_REQ_DISABLE_HE;
11016
11017         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11018                 req.flags |= ASSOC_REQ_DISABLE_EHT;
11019
11020         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11021                 memcpy(&req.vht_capa_mask,
11022                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11023                        sizeof(req.vht_capa_mask));
11024
11025         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11026                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11027                         return -EINVAL;
11028                 memcpy(&req.vht_capa,
11029                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11030                        sizeof(req.vht_capa));
11031         }
11032
11033         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11034                 if (!((rdev->wiphy.features &
11035                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11036                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11037                     !wiphy_ext_feature_isset(&rdev->wiphy,
11038                                              NL80211_EXT_FEATURE_RRM))
11039                         return -EINVAL;
11040                 req.flags |= ASSOC_REQ_USE_RRM;
11041         }
11042
11043         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11044                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11045                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11046                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11047                         return -EINVAL;
11048                 req.fils_nonces =
11049                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11050         }
11051
11052         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11053                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11054                         return -EINVAL;
11055                 memcpy(&req.s1g_capa_mask,
11056                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11057                        sizeof(req.s1g_capa_mask));
11058         }
11059
11060         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11061                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11062                         return -EINVAL;
11063                 memcpy(&req.s1g_capa,
11064                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11065                        sizeof(req.s1g_capa));
11066         }
11067
11068         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11069
11070         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11071                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11072                 struct nlattr *link;
11073                 int rem = 0;
11074
11075                 if (req.link_id < 0)
11076                         return -EINVAL;
11077
11078                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11079                         return -EINVAL;
11080
11081                 if (info->attrs[NL80211_ATTR_MAC] ||
11082                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11083                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11084                         return -EINVAL;
11085
11086                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11087                 ap_addr = req.ap_mld_addr;
11088
11089                 attrs = kzalloc(attrsize, GFP_KERNEL);
11090                 if (!attrs)
11091                         return -ENOMEM;
11092
11093                 nla_for_each_nested(link,
11094                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11095                                     rem) {
11096                         memset(attrs, 0, attrsize);
11097
11098                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11099                                          link, NULL, NULL);
11100
11101                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11102                                 err = -EINVAL;
11103                                 goto free;
11104                         }
11105
11106                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11107                         /* cannot use the same link ID again */
11108                         if (req.links[link_id].bss) {
11109                                 err = -EINVAL;
11110                                 goto free;
11111                         }
11112                         req.links[link_id].bss =
11113                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
11114                         if (IS_ERR(req.links[link_id].bss)) {
11115                                 err = PTR_ERR(req.links[link_id].bss);
11116                                 req.links[link_id].bss = NULL;
11117                                 goto free;
11118                         }
11119
11120                         if (attrs[NL80211_ATTR_IE]) {
11121                                 req.links[link_id].elems =
11122                                         nla_data(attrs[NL80211_ATTR_IE]);
11123                                 req.links[link_id].elems_len =
11124                                         nla_len(attrs[NL80211_ATTR_IE]);
11125
11126                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11127                                                        req.links[link_id].elems,
11128                                                        req.links[link_id].elems_len)) {
11129                                         GENL_SET_ERR_MSG(info,
11130                                                          "cannot deal with fragmentation");
11131                                         err = -EINVAL;
11132                                         goto free;
11133                                 }
11134
11135                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11136                                                            req.links[link_id].elems,
11137                                                            req.links[link_id].elems_len)) {
11138                                         GENL_SET_ERR_MSG(info,
11139                                                          "cannot deal with non-inheritance");
11140                                         err = -EINVAL;
11141                                         goto free;
11142                                 }
11143                         }
11144
11145                         req.links[link_id].disabled =
11146                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11147                 }
11148
11149                 if (!req.links[req.link_id].bss) {
11150                         err = -EINVAL;
11151                         goto free;
11152                 }
11153
11154                 if (req.links[req.link_id].elems_len) {
11155                         GENL_SET_ERR_MSG(info,
11156                                          "cannot have per-link elems on assoc link");
11157                         err = -EINVAL;
11158                         goto free;
11159                 }
11160
11161                 if (req.links[req.link_id].disabled) {
11162                         GENL_SET_ERR_MSG(info,
11163                                          "cannot have assoc link disabled");
11164                         err = -EINVAL;
11165                         goto free;
11166                 }
11167
11168                 kfree(attrs);
11169                 attrs = NULL;
11170         } else {
11171                 if (req.link_id >= 0)
11172                         return -EINVAL;
11173
11174                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
11175                 if (IS_ERR(req.bss))
11176                         return PTR_ERR(req.bss);
11177                 ap_addr = req.bss->bssid;
11178         }
11179
11180         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11181         if (!err) {
11182                 wdev_lock(dev->ieee80211_ptr);
11183
11184                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11185
11186                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11187                         dev->ieee80211_ptr->conn_owner_nlportid =
11188                                 info->snd_portid;
11189                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11190                                ap_addr, ETH_ALEN);
11191                 }
11192
11193                 wdev_unlock(dev->ieee80211_ptr);
11194         }
11195
11196 free:
11197         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11198                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11199         cfg80211_put_bss(&rdev->wiphy, req.bss);
11200         kfree(attrs);
11201
11202         return err;
11203 }
11204
11205 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11206 {
11207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11208         struct net_device *dev = info->user_ptr[1];
11209         const u8 *ie = NULL, *bssid;
11210         int ie_len = 0, err;
11211         u16 reason_code;
11212         bool local_state_change;
11213
11214         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11215             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11216                 return -EPERM;
11217
11218         if (!info->attrs[NL80211_ATTR_MAC])
11219                 return -EINVAL;
11220
11221         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11222                 return -EINVAL;
11223
11224         if (!rdev->ops->deauth)
11225                 return -EOPNOTSUPP;
11226
11227         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11228             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11229                 return -EOPNOTSUPP;
11230
11231         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11232
11233         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11234         if (reason_code == 0) {
11235                 /* Reason Code 0 is reserved */
11236                 return -EINVAL;
11237         }
11238
11239         if (info->attrs[NL80211_ATTR_IE]) {
11240                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11241                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11242         }
11243
11244         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11245
11246         wdev_lock(dev->ieee80211_ptr);
11247         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11248                                    local_state_change);
11249         wdev_unlock(dev->ieee80211_ptr);
11250         return err;
11251 }
11252
11253 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11254 {
11255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11256         struct net_device *dev = info->user_ptr[1];
11257         const u8 *ie = NULL, *bssid;
11258         int ie_len = 0, err;
11259         u16 reason_code;
11260         bool local_state_change;
11261
11262         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11263             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11264                 return -EPERM;
11265
11266         if (!info->attrs[NL80211_ATTR_MAC])
11267                 return -EINVAL;
11268
11269         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11270                 return -EINVAL;
11271
11272         if (!rdev->ops->disassoc)
11273                 return -EOPNOTSUPP;
11274
11275         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11276             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11277                 return -EOPNOTSUPP;
11278
11279         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11280
11281         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11282         if (reason_code == 0) {
11283                 /* Reason Code 0 is reserved */
11284                 return -EINVAL;
11285         }
11286
11287         if (info->attrs[NL80211_ATTR_IE]) {
11288                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11289                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11290         }
11291
11292         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11293
11294         wdev_lock(dev->ieee80211_ptr);
11295         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11296                                      local_state_change);
11297         wdev_unlock(dev->ieee80211_ptr);
11298         return err;
11299 }
11300
11301 static bool
11302 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11303                          int mcast_rate[NUM_NL80211_BANDS],
11304                          int rateval)
11305 {
11306         struct wiphy *wiphy = &rdev->wiphy;
11307         bool found = false;
11308         int band, i;
11309
11310         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11311                 struct ieee80211_supported_band *sband;
11312
11313                 sband = wiphy->bands[band];
11314                 if (!sband)
11315                         continue;
11316
11317                 for (i = 0; i < sband->n_bitrates; i++) {
11318                         if (sband->bitrates[i].bitrate == rateval) {
11319                                 mcast_rate[band] = i + 1;
11320                                 found = true;
11321                                 break;
11322                         }
11323                 }
11324         }
11325
11326         return found;
11327 }
11328
11329 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11330 {
11331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11332         struct net_device *dev = info->user_ptr[1];
11333         struct cfg80211_ibss_params ibss;
11334         struct wiphy *wiphy;
11335         struct cfg80211_cached_keys *connkeys = NULL;
11336         int err;
11337
11338         memset(&ibss, 0, sizeof(ibss));
11339
11340         if (!info->attrs[NL80211_ATTR_SSID] ||
11341             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11342                 return -EINVAL;
11343
11344         ibss.beacon_interval = 100;
11345
11346         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11347                 ibss.beacon_interval =
11348                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11349
11350         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11351                                            ibss.beacon_interval);
11352         if (err)
11353                 return err;
11354
11355         if (!rdev->ops->join_ibss)
11356                 return -EOPNOTSUPP;
11357
11358         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11359                 return -EOPNOTSUPP;
11360
11361         wiphy = &rdev->wiphy;
11362
11363         if (info->attrs[NL80211_ATTR_MAC]) {
11364                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11365
11366                 if (!is_valid_ether_addr(ibss.bssid))
11367                         return -EINVAL;
11368         }
11369         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11370         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11371
11372         if (info->attrs[NL80211_ATTR_IE]) {
11373                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11374                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11375         }
11376
11377         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11378         if (err)
11379                 return err;
11380
11381         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11382                                      NL80211_IFTYPE_ADHOC))
11383                 return -EINVAL;
11384
11385         switch (ibss.chandef.width) {
11386         case NL80211_CHAN_WIDTH_5:
11387         case NL80211_CHAN_WIDTH_10:
11388         case NL80211_CHAN_WIDTH_20_NOHT:
11389                 break;
11390         case NL80211_CHAN_WIDTH_20:
11391         case NL80211_CHAN_WIDTH_40:
11392                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11393                         return -EINVAL;
11394                 break;
11395         case NL80211_CHAN_WIDTH_80:
11396         case NL80211_CHAN_WIDTH_80P80:
11397         case NL80211_CHAN_WIDTH_160:
11398                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11399                         return -EINVAL;
11400                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11401                                              NL80211_EXT_FEATURE_VHT_IBSS))
11402                         return -EINVAL;
11403                 break;
11404         case NL80211_CHAN_WIDTH_320:
11405                 return -EINVAL;
11406         default:
11407                 return -EINVAL;
11408         }
11409
11410         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11411         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11412
11413         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11414                 u8 *rates =
11415                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11416                 int n_rates =
11417                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11418                 struct ieee80211_supported_band *sband =
11419                         wiphy->bands[ibss.chandef.chan->band];
11420
11421                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11422                                              &ibss.basic_rates);
11423                 if (err)
11424                         return err;
11425         }
11426
11427         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11428                 memcpy(&ibss.ht_capa_mask,
11429                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11430                        sizeof(ibss.ht_capa_mask));
11431
11432         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11433                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11434                         return -EINVAL;
11435                 memcpy(&ibss.ht_capa,
11436                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11437                        sizeof(ibss.ht_capa));
11438         }
11439
11440         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11441             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11442                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11443                 return -EINVAL;
11444
11445         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11446                 bool no_ht = false;
11447
11448                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11449                 if (IS_ERR(connkeys))
11450                         return PTR_ERR(connkeys);
11451
11452                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11453                     no_ht) {
11454                         kfree_sensitive(connkeys);
11455                         return -EINVAL;
11456                 }
11457         }
11458
11459         ibss.control_port =
11460                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11461
11462         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11463                 int r = validate_pae_over_nl80211(rdev, info);
11464
11465                 if (r < 0) {
11466                         kfree_sensitive(connkeys);
11467                         return r;
11468                 }
11469
11470                 ibss.control_port_over_nl80211 = true;
11471         }
11472
11473         ibss.userspace_handles_dfs =
11474                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11475
11476         wdev_lock(dev->ieee80211_ptr);
11477         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11478         if (err)
11479                 kfree_sensitive(connkeys);
11480         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11481                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11482         wdev_unlock(dev->ieee80211_ptr);
11483
11484         return err;
11485 }
11486
11487 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11488 {
11489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11490         struct net_device *dev = info->user_ptr[1];
11491
11492         if (!rdev->ops->leave_ibss)
11493                 return -EOPNOTSUPP;
11494
11495         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11496                 return -EOPNOTSUPP;
11497
11498         return cfg80211_leave_ibss(rdev, dev, false);
11499 }
11500
11501 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11502 {
11503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11504         struct net_device *dev = info->user_ptr[1];
11505         int mcast_rate[NUM_NL80211_BANDS];
11506         u32 nla_rate;
11507
11508         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11509             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11510             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11511                 return -EOPNOTSUPP;
11512
11513         if (!rdev->ops->set_mcast_rate)
11514                 return -EOPNOTSUPP;
11515
11516         memset(mcast_rate, 0, sizeof(mcast_rate));
11517
11518         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11519                 return -EINVAL;
11520
11521         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11522         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11523                 return -EINVAL;
11524
11525         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11526 }
11527
11528 static struct sk_buff *
11529 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11530                             struct wireless_dev *wdev, int approxlen,
11531                             u32 portid, u32 seq, enum nl80211_commands cmd,
11532                             enum nl80211_attrs attr,
11533                             const struct nl80211_vendor_cmd_info *info,
11534                             gfp_t gfp)
11535 {
11536         struct sk_buff *skb;
11537         void *hdr;
11538         struct nlattr *data;
11539
11540         skb = nlmsg_new(approxlen + 100, gfp);
11541         if (!skb)
11542                 return NULL;
11543
11544         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11545         if (!hdr) {
11546                 kfree_skb(skb);
11547                 return NULL;
11548         }
11549
11550         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11551                 goto nla_put_failure;
11552
11553         if (info) {
11554                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11555                                 info->vendor_id))
11556                         goto nla_put_failure;
11557                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11558                                 info->subcmd))
11559                         goto nla_put_failure;
11560         }
11561
11562         if (wdev) {
11563                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11564                                       wdev_id(wdev), NL80211_ATTR_PAD))
11565                         goto nla_put_failure;
11566                 if (wdev->netdev &&
11567                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11568                                 wdev->netdev->ifindex))
11569                         goto nla_put_failure;
11570         }
11571
11572         data = nla_nest_start_noflag(skb, attr);
11573         if (!data)
11574                 goto nla_put_failure;
11575
11576         ((void **)skb->cb)[0] = rdev;
11577         ((void **)skb->cb)[1] = hdr;
11578         ((void **)skb->cb)[2] = data;
11579
11580         return skb;
11581
11582  nla_put_failure:
11583         kfree_skb(skb);
11584         return NULL;
11585 }
11586
11587 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11588                                            struct wireless_dev *wdev,
11589                                            enum nl80211_commands cmd,
11590                                            enum nl80211_attrs attr,
11591                                            unsigned int portid,
11592                                            int vendor_event_idx,
11593                                            int approxlen, gfp_t gfp)
11594 {
11595         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11596         const struct nl80211_vendor_cmd_info *info;
11597
11598         switch (cmd) {
11599         case NL80211_CMD_TESTMODE:
11600                 if (WARN_ON(vendor_event_idx != -1))
11601                         return NULL;
11602                 info = NULL;
11603                 break;
11604         case NL80211_CMD_VENDOR:
11605                 if (WARN_ON(vendor_event_idx < 0 ||
11606                             vendor_event_idx >= wiphy->n_vendor_events))
11607                         return NULL;
11608                 info = &wiphy->vendor_events[vendor_event_idx];
11609                 break;
11610         default:
11611                 WARN_ON(1);
11612                 return NULL;
11613         }
11614
11615         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11616                                            cmd, attr, info, gfp);
11617 }
11618 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11619
11620 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11621 {
11622         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11623         void *hdr = ((void **)skb->cb)[1];
11624         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11625         struct nlattr *data = ((void **)skb->cb)[2];
11626         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11627
11628         /* clear CB data for netlink core to own from now on */
11629         memset(skb->cb, 0, sizeof(skb->cb));
11630
11631         nla_nest_end(skb, data);
11632         genlmsg_end(skb, hdr);
11633
11634         if (nlhdr->nlmsg_pid) {
11635                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11636                                 nlhdr->nlmsg_pid);
11637         } else {
11638                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11639                         mcgrp = NL80211_MCGRP_VENDOR;
11640
11641                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11642                                         skb, 0, mcgrp, gfp);
11643         }
11644 }
11645 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11646
11647 #ifdef CONFIG_NL80211_TESTMODE
11648 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11649 {
11650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11651         struct wireless_dev *wdev;
11652         int err;
11653
11654         lockdep_assert_held(&rdev->wiphy.mtx);
11655
11656         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11657                                           info->attrs);
11658
11659         if (!rdev->ops->testmode_cmd)
11660                 return -EOPNOTSUPP;
11661
11662         if (IS_ERR(wdev)) {
11663                 err = PTR_ERR(wdev);
11664                 if (err != -EINVAL)
11665                         return err;
11666                 wdev = NULL;
11667         } else if (wdev->wiphy != &rdev->wiphy) {
11668                 return -EINVAL;
11669         }
11670
11671         if (!info->attrs[NL80211_ATTR_TESTDATA])
11672                 return -EINVAL;
11673
11674         rdev->cur_cmd_info = info;
11675         err = rdev_testmode_cmd(rdev, wdev,
11676                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11677                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11678         rdev->cur_cmd_info = NULL;
11679
11680         return err;
11681 }
11682
11683 static int nl80211_testmode_dump(struct sk_buff *skb,
11684                                  struct netlink_callback *cb)
11685 {
11686         struct cfg80211_registered_device *rdev;
11687         struct nlattr **attrbuf = NULL;
11688         int err;
11689         long phy_idx;
11690         void *data = NULL;
11691         int data_len = 0;
11692
11693         rtnl_lock();
11694
11695         if (cb->args[0]) {
11696                 /*
11697                  * 0 is a valid index, but not valid for args[0],
11698                  * so we need to offset by 1.
11699                  */
11700                 phy_idx = cb->args[0] - 1;
11701
11702                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11703                 if (!rdev) {
11704                         err = -ENOENT;
11705                         goto out_err;
11706                 }
11707         } else {
11708                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11709                                   GFP_KERNEL);
11710                 if (!attrbuf) {
11711                         err = -ENOMEM;
11712                         goto out_err;
11713                 }
11714
11715                 err = nlmsg_parse_deprecated(cb->nlh,
11716                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11717                                              attrbuf, nl80211_fam.maxattr,
11718                                              nl80211_policy, NULL);
11719                 if (err)
11720                         goto out_err;
11721
11722                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11723                 if (IS_ERR(rdev)) {
11724                         err = PTR_ERR(rdev);
11725                         goto out_err;
11726                 }
11727                 phy_idx = rdev->wiphy_idx;
11728
11729                 if (attrbuf[NL80211_ATTR_TESTDATA])
11730                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11731         }
11732
11733         if (cb->args[1]) {
11734                 data = nla_data((void *)cb->args[1]);
11735                 data_len = nla_len((void *)cb->args[1]);
11736         }
11737
11738         if (!rdev->ops->testmode_dump) {
11739                 err = -EOPNOTSUPP;
11740                 goto out_err;
11741         }
11742
11743         while (1) {
11744                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11745                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11746                                            NL80211_CMD_TESTMODE);
11747                 struct nlattr *tmdata;
11748
11749                 if (!hdr)
11750                         break;
11751
11752                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11753                         genlmsg_cancel(skb, hdr);
11754                         break;
11755                 }
11756
11757                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11758                 if (!tmdata) {
11759                         genlmsg_cancel(skb, hdr);
11760                         break;
11761                 }
11762                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11763                 nla_nest_end(skb, tmdata);
11764
11765                 if (err == -ENOBUFS || err == -ENOENT) {
11766                         genlmsg_cancel(skb, hdr);
11767                         break;
11768                 } else if (err) {
11769                         genlmsg_cancel(skb, hdr);
11770                         goto out_err;
11771                 }
11772
11773                 genlmsg_end(skb, hdr);
11774         }
11775
11776         err = skb->len;
11777         /* see above */
11778         cb->args[0] = phy_idx + 1;
11779  out_err:
11780         kfree(attrbuf);
11781         rtnl_unlock();
11782         return err;
11783 }
11784 #endif
11785
11786 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11787 {
11788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11789         struct net_device *dev = info->user_ptr[1];
11790         struct cfg80211_connect_params connect;
11791         struct wiphy *wiphy;
11792         struct cfg80211_cached_keys *connkeys = NULL;
11793         u32 freq = 0;
11794         int err;
11795
11796         memset(&connect, 0, sizeof(connect));
11797
11798         if (!info->attrs[NL80211_ATTR_SSID] ||
11799             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11800                 return -EINVAL;
11801
11802         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11803                 connect.auth_type =
11804                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11805                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11806                                              NL80211_CMD_CONNECT))
11807                         return -EINVAL;
11808         } else
11809                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11810
11811         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11812
11813         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11814             !wiphy_ext_feature_isset(&rdev->wiphy,
11815                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11816                 return -EINVAL;
11817         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11818
11819         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11820                                       NL80211_MAX_NR_CIPHER_SUITES);
11821         if (err)
11822                 return err;
11823
11824         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11825             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11826                 return -EOPNOTSUPP;
11827
11828         wiphy = &rdev->wiphy;
11829
11830         connect.bg_scan_period = -1;
11831         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11832                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11833                 connect.bg_scan_period =
11834                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11835         }
11836
11837         if (info->attrs[NL80211_ATTR_MAC])
11838                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11839         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11840                 connect.bssid_hint =
11841                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11842         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11843         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11844
11845         if (info->attrs[NL80211_ATTR_IE]) {
11846                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11847                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11848         }
11849
11850         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11851                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11852                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11853                     !wiphy_ext_feature_isset(&rdev->wiphy,
11854                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11855                         return -EOPNOTSUPP;
11856         } else {
11857                 connect.mfp = NL80211_MFP_NO;
11858         }
11859
11860         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11861                 connect.prev_bssid =
11862                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11863
11864         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11865                 freq = MHZ_TO_KHZ(nla_get_u32(
11866                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11867         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11868                 freq +=
11869                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11870
11871         if (freq) {
11872                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11873                 if (!connect.channel)
11874                         return -EINVAL;
11875         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11876                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11877                 freq = MHZ_TO_KHZ(freq);
11878                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11879                 if (!connect.channel_hint)
11880                         return -EINVAL;
11881         }
11882
11883         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11884                 connect.edmg.channels =
11885                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11886
11887                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11888                         connect.edmg.bw_config =
11889                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11890         }
11891
11892         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11893                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11894                 if (IS_ERR(connkeys))
11895                         return PTR_ERR(connkeys);
11896         }
11897
11898         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11899                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11900
11901         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11902                 memcpy(&connect.ht_capa_mask,
11903                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11904                        sizeof(connect.ht_capa_mask));
11905
11906         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11907                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11908                         kfree_sensitive(connkeys);
11909                         return -EINVAL;
11910                 }
11911                 memcpy(&connect.ht_capa,
11912                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11913                        sizeof(connect.ht_capa));
11914         }
11915
11916         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11917                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11918
11919         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11920                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11921
11922         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11923                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11924
11925         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11926                 memcpy(&connect.vht_capa_mask,
11927                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11928                        sizeof(connect.vht_capa_mask));
11929
11930         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11931                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11932                         kfree_sensitive(connkeys);
11933                         return -EINVAL;
11934                 }
11935                 memcpy(&connect.vht_capa,
11936                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11937                        sizeof(connect.vht_capa));
11938         }
11939
11940         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11941                 if (!((rdev->wiphy.features &
11942                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11943                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11944                     !wiphy_ext_feature_isset(&rdev->wiphy,
11945                                              NL80211_EXT_FEATURE_RRM)) {
11946                         kfree_sensitive(connkeys);
11947                         return -EINVAL;
11948                 }
11949                 connect.flags |= ASSOC_REQ_USE_RRM;
11950         }
11951
11952         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11953         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11954                 kfree_sensitive(connkeys);
11955                 return -EOPNOTSUPP;
11956         }
11957
11958         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11959                 /* bss selection makes no sense if bssid is set */
11960                 if (connect.bssid) {
11961                         kfree_sensitive(connkeys);
11962                         return -EINVAL;
11963                 }
11964
11965                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11966                                        wiphy, &connect.bss_select);
11967                 if (err) {
11968                         kfree_sensitive(connkeys);
11969                         return err;
11970                 }
11971         }
11972
11973         if (wiphy_ext_feature_isset(&rdev->wiphy,
11974                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11975             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11976             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11977             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11978             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11979                 connect.fils_erp_username =
11980                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11981                 connect.fils_erp_username_len =
11982                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11983                 connect.fils_erp_realm =
11984                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11985                 connect.fils_erp_realm_len =
11986                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11987                 connect.fils_erp_next_seq_num =
11988                         nla_get_u16(
11989                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11990                 connect.fils_erp_rrk =
11991                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11992                 connect.fils_erp_rrk_len =
11993                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11994         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11995                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11996                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11997                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11998                 kfree_sensitive(connkeys);
11999                 return -EINVAL;
12000         }
12001
12002         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12003                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12004                         kfree_sensitive(connkeys);
12005                         GENL_SET_ERR_MSG(info,
12006                                          "external auth requires connection ownership");
12007                         return -EINVAL;
12008                 }
12009                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12010         }
12011
12012         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12013                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12014
12015         wdev_lock(dev->ieee80211_ptr);
12016
12017         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12018                                connect.prev_bssid);
12019         if (err)
12020                 kfree_sensitive(connkeys);
12021
12022         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12023                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12024                 if (connect.bssid)
12025                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12026                                connect.bssid, ETH_ALEN);
12027                 else
12028                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12029         }
12030
12031         wdev_unlock(dev->ieee80211_ptr);
12032
12033         return err;
12034 }
12035
12036 static int nl80211_update_connect_params(struct sk_buff *skb,
12037                                          struct genl_info *info)
12038 {
12039         struct cfg80211_connect_params connect = {};
12040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12041         struct net_device *dev = info->user_ptr[1];
12042         struct wireless_dev *wdev = dev->ieee80211_ptr;
12043         bool fils_sk_offload;
12044         u32 auth_type;
12045         u32 changed = 0;
12046         int ret;
12047
12048         if (!rdev->ops->update_connect_params)
12049                 return -EOPNOTSUPP;
12050
12051         if (info->attrs[NL80211_ATTR_IE]) {
12052                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12053                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12054                 changed |= UPDATE_ASSOC_IES;
12055         }
12056
12057         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12058                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12059
12060         /*
12061          * when driver supports fils-sk offload all attributes must be
12062          * provided. So the else covers "fils-sk-not-all" and
12063          * "no-fils-sk-any".
12064          */
12065         if (fils_sk_offload &&
12066             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12067             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12068             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12069             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12070                 connect.fils_erp_username =
12071                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12072                 connect.fils_erp_username_len =
12073                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12074                 connect.fils_erp_realm =
12075                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12076                 connect.fils_erp_realm_len =
12077                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12078                 connect.fils_erp_next_seq_num =
12079                         nla_get_u16(
12080                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12081                 connect.fils_erp_rrk =
12082                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12083                 connect.fils_erp_rrk_len =
12084                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12085                 changed |= UPDATE_FILS_ERP_INFO;
12086         } else if (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                 return -EINVAL;
12091         }
12092
12093         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12094                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12095                 if (!nl80211_valid_auth_type(rdev, auth_type,
12096                                              NL80211_CMD_CONNECT))
12097                         return -EINVAL;
12098
12099                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12100                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12101                         return -EINVAL;
12102
12103                 connect.auth_type = auth_type;
12104                 changed |= UPDATE_AUTH_TYPE;
12105         }
12106
12107         wdev_lock(dev->ieee80211_ptr);
12108         if (!wdev->connected)
12109                 ret = -ENOLINK;
12110         else
12111                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
12112         wdev_unlock(dev->ieee80211_ptr);
12113
12114         return ret;
12115 }
12116
12117 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12118 {
12119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12120         struct net_device *dev = info->user_ptr[1];
12121         u16 reason;
12122         int ret;
12123
12124         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12125             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12126                 return -EPERM;
12127
12128         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12129                 reason = WLAN_REASON_DEAUTH_LEAVING;
12130         else
12131                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12132
12133         if (reason == 0)
12134                 return -EINVAL;
12135
12136         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12137             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12138                 return -EOPNOTSUPP;
12139
12140         wdev_lock(dev->ieee80211_ptr);
12141         ret = cfg80211_disconnect(rdev, dev, reason, true);
12142         wdev_unlock(dev->ieee80211_ptr);
12143         return ret;
12144 }
12145
12146 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12147 {
12148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12149         struct net *net;
12150         int err;
12151
12152         if (info->attrs[NL80211_ATTR_PID]) {
12153                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12154
12155                 net = get_net_ns_by_pid(pid);
12156         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12157                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12158
12159                 net = get_net_ns_by_fd(fd);
12160         } else {
12161                 return -EINVAL;
12162         }
12163
12164         if (IS_ERR(net))
12165                 return PTR_ERR(net);
12166
12167         err = 0;
12168
12169         /* check if anything to do */
12170         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12171                 err = cfg80211_switch_netns(rdev, net);
12172
12173         put_net(net);
12174         return err;
12175 }
12176
12177 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12178 {
12179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12180         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12181                         struct cfg80211_pmksa *pmksa) = NULL;
12182         struct net_device *dev = info->user_ptr[1];
12183         struct cfg80211_pmksa pmksa;
12184
12185         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12186
12187         if (!info->attrs[NL80211_ATTR_PMKID])
12188                 return -EINVAL;
12189
12190         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12191
12192         if (info->attrs[NL80211_ATTR_MAC]) {
12193                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12194         } else if (info->attrs[NL80211_ATTR_SSID] &&
12195                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12196                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12197                     info->attrs[NL80211_ATTR_PMK])) {
12198                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12199                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12200                 pmksa.cache_id =
12201                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12202         } else {
12203                 return -EINVAL;
12204         }
12205         if (info->attrs[NL80211_ATTR_PMK]) {
12206                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12207                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12208         }
12209
12210         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12211                 pmksa.pmk_lifetime =
12212                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12213
12214         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12215                 pmksa.pmk_reauth_threshold =
12216                         nla_get_u8(
12217                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12218
12219         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12220             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12221             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12222               wiphy_ext_feature_isset(&rdev->wiphy,
12223                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12224                 return -EOPNOTSUPP;
12225
12226         switch (info->genlhdr->cmd) {
12227         case NL80211_CMD_SET_PMKSA:
12228                 rdev_ops = rdev->ops->set_pmksa;
12229                 break;
12230         case NL80211_CMD_DEL_PMKSA:
12231                 rdev_ops = rdev->ops->del_pmksa;
12232                 break;
12233         default:
12234                 WARN_ON(1);
12235                 break;
12236         }
12237
12238         if (!rdev_ops)
12239                 return -EOPNOTSUPP;
12240
12241         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12242 }
12243
12244 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12245 {
12246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12247         struct net_device *dev = info->user_ptr[1];
12248
12249         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12250             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12251                 return -EOPNOTSUPP;
12252
12253         if (!rdev->ops->flush_pmksa)
12254                 return -EOPNOTSUPP;
12255
12256         return rdev_flush_pmksa(rdev, dev);
12257 }
12258
12259 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12260 {
12261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12262         struct net_device *dev = info->user_ptr[1];
12263         u8 action_code, dialog_token;
12264         u32 peer_capability = 0;
12265         u16 status_code;
12266         u8 *peer;
12267         int link_id;
12268         bool initiator;
12269
12270         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12271             !rdev->ops->tdls_mgmt)
12272                 return -EOPNOTSUPP;
12273
12274         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12275             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12276             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12277             !info->attrs[NL80211_ATTR_IE] ||
12278             !info->attrs[NL80211_ATTR_MAC])
12279                 return -EINVAL;
12280
12281         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12282         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12283         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12284         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12285         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12286         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12287                 peer_capability =
12288                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12289         link_id = nl80211_link_id_or_invalid(info->attrs);
12290
12291         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12292                               dialog_token, status_code, peer_capability,
12293                               initiator,
12294                               nla_data(info->attrs[NL80211_ATTR_IE]),
12295                               nla_len(info->attrs[NL80211_ATTR_IE]));
12296 }
12297
12298 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12299 {
12300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12301         struct net_device *dev = info->user_ptr[1];
12302         enum nl80211_tdls_operation operation;
12303         u8 *peer;
12304
12305         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12306             !rdev->ops->tdls_oper)
12307                 return -EOPNOTSUPP;
12308
12309         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12310             !info->attrs[NL80211_ATTR_MAC])
12311                 return -EINVAL;
12312
12313         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12314         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12315
12316         return rdev_tdls_oper(rdev, dev, peer, operation);
12317 }
12318
12319 static int nl80211_remain_on_channel(struct sk_buff *skb,
12320                                      struct genl_info *info)
12321 {
12322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12323         unsigned int link_id = nl80211_link_id(info->attrs);
12324         struct wireless_dev *wdev = info->user_ptr[1];
12325         struct cfg80211_chan_def chandef;
12326         struct sk_buff *msg;
12327         void *hdr;
12328         u64 cookie;
12329         u32 duration;
12330         int err;
12331
12332         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12333             !info->attrs[NL80211_ATTR_DURATION])
12334                 return -EINVAL;
12335
12336         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12337
12338         if (!rdev->ops->remain_on_channel ||
12339             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12340                 return -EOPNOTSUPP;
12341
12342         /*
12343          * We should be on that channel for at least a minimum amount of
12344          * time (10ms) but no longer than the driver supports.
12345          */
12346         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12347             duration > rdev->wiphy.max_remain_on_channel_duration)
12348                 return -EINVAL;
12349
12350         err = nl80211_parse_chandef(rdev, info, &chandef);
12351         if (err)
12352                 return err;
12353
12354         wdev_lock(wdev);
12355         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12356                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12357
12358                 oper_chandef = wdev_chandef(wdev, link_id);
12359
12360                 if (WARN_ON(!oper_chandef)) {
12361                         /* cannot happen since we must beacon to get here */
12362                         WARN_ON(1);
12363                         wdev_unlock(wdev);
12364                         return -EBUSY;
12365                 }
12366
12367                 /* note: returns first one if identical chandefs */
12368                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12369                                                              oper_chandef);
12370
12371                 if (compat_chandef != &chandef) {
12372                         wdev_unlock(wdev);
12373                         return -EBUSY;
12374                 }
12375         }
12376         wdev_unlock(wdev);
12377
12378         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12379         if (!msg)
12380                 return -ENOMEM;
12381
12382         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12383                              NL80211_CMD_REMAIN_ON_CHANNEL);
12384         if (!hdr) {
12385                 err = -ENOBUFS;
12386                 goto free_msg;
12387         }
12388
12389         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12390                                      duration, &cookie);
12391
12392         if (err)
12393                 goto free_msg;
12394
12395         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12396                               NL80211_ATTR_PAD))
12397                 goto nla_put_failure;
12398
12399         genlmsg_end(msg, hdr);
12400
12401         return genlmsg_reply(msg, info);
12402
12403  nla_put_failure:
12404         err = -ENOBUFS;
12405  free_msg:
12406         nlmsg_free(msg);
12407         return err;
12408 }
12409
12410 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12411                                             struct genl_info *info)
12412 {
12413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12414         struct wireless_dev *wdev = info->user_ptr[1];
12415         u64 cookie;
12416
12417         if (!info->attrs[NL80211_ATTR_COOKIE])
12418                 return -EINVAL;
12419
12420         if (!rdev->ops->cancel_remain_on_channel)
12421                 return -EOPNOTSUPP;
12422
12423         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12424
12425         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12426 }
12427
12428 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12429                                        struct genl_info *info)
12430 {
12431         struct cfg80211_bitrate_mask mask;
12432         unsigned int link_id = nl80211_link_id(info->attrs);
12433         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12434         struct net_device *dev = info->user_ptr[1];
12435         struct wireless_dev *wdev = dev->ieee80211_ptr;
12436         int err;
12437
12438         if (!rdev->ops->set_bitrate_mask)
12439                 return -EOPNOTSUPP;
12440
12441         wdev_lock(wdev);
12442         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12443                                             NL80211_ATTR_TX_RATES, &mask,
12444                                             dev, true, link_id);
12445         if (err)
12446                 goto out;
12447
12448         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12449 out:
12450         wdev_unlock(wdev);
12451         return err;
12452 }
12453
12454 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12455 {
12456         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12457         struct wireless_dev *wdev = info->user_ptr[1];
12458         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12459
12460         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12461                 return -EINVAL;
12462
12463         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12464                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12465
12466         switch (wdev->iftype) {
12467         case NL80211_IFTYPE_STATION:
12468         case NL80211_IFTYPE_ADHOC:
12469         case NL80211_IFTYPE_P2P_CLIENT:
12470         case NL80211_IFTYPE_AP:
12471         case NL80211_IFTYPE_AP_VLAN:
12472         case NL80211_IFTYPE_MESH_POINT:
12473         case NL80211_IFTYPE_P2P_GO:
12474         case NL80211_IFTYPE_P2P_DEVICE:
12475                 break;
12476         case NL80211_IFTYPE_NAN:
12477                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12478                                              NL80211_EXT_FEATURE_SECURE_NAN))
12479                         return -EOPNOTSUPP;
12480                 break;
12481         default:
12482                 return -EOPNOTSUPP;
12483         }
12484
12485         /* not much point in registering if we can't reply */
12486         if (!rdev->ops->mgmt_tx)
12487                 return -EOPNOTSUPP;
12488
12489         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12490             !wiphy_ext_feature_isset(&rdev->wiphy,
12491                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12492                 GENL_SET_ERR_MSG(info,
12493                                  "multicast RX registrations are not supported");
12494                 return -EOPNOTSUPP;
12495         }
12496
12497         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12498                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12499                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12500                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12501                                            info->extack);
12502 }
12503
12504 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12505 {
12506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12507         struct wireless_dev *wdev = info->user_ptr[1];
12508         struct cfg80211_chan_def chandef;
12509         int err;
12510         void *hdr = NULL;
12511         u64 cookie;
12512         struct sk_buff *msg = NULL;
12513         struct cfg80211_mgmt_tx_params params = {
12514                 .dont_wait_for_ack =
12515                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12516         };
12517
12518         if (!info->attrs[NL80211_ATTR_FRAME])
12519                 return -EINVAL;
12520
12521         if (!rdev->ops->mgmt_tx)
12522                 return -EOPNOTSUPP;
12523
12524         switch (wdev->iftype) {
12525         case NL80211_IFTYPE_P2P_DEVICE:
12526                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12527                         return -EINVAL;
12528                 break;
12529         case NL80211_IFTYPE_STATION:
12530         case NL80211_IFTYPE_ADHOC:
12531         case NL80211_IFTYPE_P2P_CLIENT:
12532         case NL80211_IFTYPE_AP:
12533         case NL80211_IFTYPE_AP_VLAN:
12534         case NL80211_IFTYPE_MESH_POINT:
12535         case NL80211_IFTYPE_P2P_GO:
12536                 break;
12537         case NL80211_IFTYPE_NAN:
12538                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12539                                              NL80211_EXT_FEATURE_SECURE_NAN))
12540                         return -EOPNOTSUPP;
12541                 break;
12542         default:
12543                 return -EOPNOTSUPP;
12544         }
12545
12546         if (info->attrs[NL80211_ATTR_DURATION]) {
12547                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12548                         return -EINVAL;
12549                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12550
12551                 /*
12552                  * We should wait on the channel for at least a minimum amount
12553                  * of time (10ms) but no longer than the driver supports.
12554                  */
12555                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12556                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12557                         return -EINVAL;
12558         }
12559
12560         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12561
12562         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12563                 return -EINVAL;
12564
12565         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12566
12567         /* get the channel if any has been specified, otherwise pass NULL to
12568          * the driver. The latter will use the current one
12569          */
12570         chandef.chan = NULL;
12571         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12572                 err = nl80211_parse_chandef(rdev, info, &chandef);
12573                 if (err)
12574                         return err;
12575         }
12576
12577         if (!chandef.chan && params.offchan)
12578                 return -EINVAL;
12579
12580         wdev_lock(wdev);
12581         if (params.offchan &&
12582             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12583                 wdev_unlock(wdev);
12584                 return -EBUSY;
12585         }
12586
12587         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12588         /*
12589          * This now races due to the unlock, but we cannot check
12590          * the valid links for the _station_ anyway, so that's up
12591          * to the driver.
12592          */
12593         if (params.link_id >= 0 &&
12594             !(wdev->valid_links & BIT(params.link_id))) {
12595                 wdev_unlock(wdev);
12596                 return -EINVAL;
12597         }
12598         wdev_unlock(wdev);
12599
12600         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12601         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12602
12603         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12604                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12605                 int i;
12606
12607                 if (len % sizeof(u16))
12608                         return -EINVAL;
12609
12610                 params.n_csa_offsets = len / sizeof(u16);
12611                 params.csa_offsets =
12612                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12613
12614                 /* check that all the offsets fit the frame */
12615                 for (i = 0; i < params.n_csa_offsets; i++) {
12616                         if (params.csa_offsets[i] >= params.len)
12617                                 return -EINVAL;
12618                 }
12619         }
12620
12621         if (!params.dont_wait_for_ack) {
12622                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12623                 if (!msg)
12624                         return -ENOMEM;
12625
12626                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12627                                      NL80211_CMD_FRAME);
12628                 if (!hdr) {
12629                         err = -ENOBUFS;
12630                         goto free_msg;
12631                 }
12632         }
12633
12634         params.chan = chandef.chan;
12635         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12636         if (err)
12637                 goto free_msg;
12638
12639         if (msg) {
12640                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12641                                       NL80211_ATTR_PAD))
12642                         goto nla_put_failure;
12643
12644                 genlmsg_end(msg, hdr);
12645                 return genlmsg_reply(msg, info);
12646         }
12647
12648         return 0;
12649
12650  nla_put_failure:
12651         err = -ENOBUFS;
12652  free_msg:
12653         nlmsg_free(msg);
12654         return err;
12655 }
12656
12657 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12658 {
12659         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12660         struct wireless_dev *wdev = info->user_ptr[1];
12661         u64 cookie;
12662
12663         if (!info->attrs[NL80211_ATTR_COOKIE])
12664                 return -EINVAL;
12665
12666         if (!rdev->ops->mgmt_tx_cancel_wait)
12667                 return -EOPNOTSUPP;
12668
12669         switch (wdev->iftype) {
12670         case NL80211_IFTYPE_STATION:
12671         case NL80211_IFTYPE_ADHOC:
12672         case NL80211_IFTYPE_P2P_CLIENT:
12673         case NL80211_IFTYPE_AP:
12674         case NL80211_IFTYPE_AP_VLAN:
12675         case NL80211_IFTYPE_P2P_GO:
12676         case NL80211_IFTYPE_P2P_DEVICE:
12677                 break;
12678         case NL80211_IFTYPE_NAN:
12679                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12680                                              NL80211_EXT_FEATURE_SECURE_NAN))
12681                         return -EOPNOTSUPP;
12682                 break;
12683         default:
12684                 return -EOPNOTSUPP;
12685         }
12686
12687         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12688
12689         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12690 }
12691
12692 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12693 {
12694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12695         struct wireless_dev *wdev;
12696         struct net_device *dev = info->user_ptr[1];
12697         u8 ps_state;
12698         bool state;
12699         int err;
12700
12701         if (!info->attrs[NL80211_ATTR_PS_STATE])
12702                 return -EINVAL;
12703
12704         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12705
12706         wdev = dev->ieee80211_ptr;
12707
12708         if (!rdev->ops->set_power_mgmt)
12709                 return -EOPNOTSUPP;
12710
12711         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12712
12713         if (state == wdev->ps)
12714                 return 0;
12715
12716         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12717         if (!err)
12718                 wdev->ps = state;
12719         return err;
12720 }
12721
12722 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12723 {
12724         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12725         enum nl80211_ps_state ps_state;
12726         struct wireless_dev *wdev;
12727         struct net_device *dev = info->user_ptr[1];
12728         struct sk_buff *msg;
12729         void *hdr;
12730         int err;
12731
12732         wdev = dev->ieee80211_ptr;
12733
12734         if (!rdev->ops->set_power_mgmt)
12735                 return -EOPNOTSUPP;
12736
12737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12738         if (!msg)
12739                 return -ENOMEM;
12740
12741         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12742                              NL80211_CMD_GET_POWER_SAVE);
12743         if (!hdr) {
12744                 err = -ENOBUFS;
12745                 goto free_msg;
12746         }
12747
12748         if (wdev->ps)
12749                 ps_state = NL80211_PS_ENABLED;
12750         else
12751                 ps_state = NL80211_PS_DISABLED;
12752
12753         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12754                 goto nla_put_failure;
12755
12756         genlmsg_end(msg, hdr);
12757         return genlmsg_reply(msg, info);
12758
12759  nla_put_failure:
12760         err = -ENOBUFS;
12761  free_msg:
12762         nlmsg_free(msg);
12763         return err;
12764 }
12765
12766 static const struct nla_policy
12767 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12768         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12769         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12770         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12771         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12772         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12773         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12774         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12775 };
12776
12777 static int nl80211_set_cqm_txe(struct genl_info *info,
12778                                u32 rate, u32 pkts, u32 intvl)
12779 {
12780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12781         struct net_device *dev = info->user_ptr[1];
12782         struct wireless_dev *wdev = dev->ieee80211_ptr;
12783
12784         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12785                 return -EINVAL;
12786
12787         if (!rdev->ops->set_cqm_txe_config)
12788                 return -EOPNOTSUPP;
12789
12790         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12791             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12792                 return -EOPNOTSUPP;
12793
12794         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12795 }
12796
12797 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12798                                     struct net_device *dev)
12799 {
12800         struct wireless_dev *wdev = dev->ieee80211_ptr;
12801         s32 last, low, high;
12802         u32 hyst;
12803         int i, n, low_index;
12804         int err;
12805
12806         /* RSSI reporting disabled? */
12807         if (!wdev->cqm_config)
12808                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12809
12810         /*
12811          * Obtain current RSSI value if possible, if not and no RSSI threshold
12812          * event has been received yet, we should receive an event after a
12813          * connection is established and enough beacons received to calculate
12814          * the average.
12815          */
12816         if (!wdev->cqm_config->last_rssi_event_value &&
12817             wdev->links[0].client.current_bss &&
12818             rdev->ops->get_station) {
12819                 struct station_info sinfo = {};
12820                 u8 *mac_addr;
12821
12822                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12823
12824                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12825                 if (err)
12826                         return err;
12827
12828                 cfg80211_sinfo_release_content(&sinfo);
12829                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12830                         wdev->cqm_config->last_rssi_event_value =
12831                                 (s8) sinfo.rx_beacon_signal_avg;
12832         }
12833
12834         last = wdev->cqm_config->last_rssi_event_value;
12835         hyst = wdev->cqm_config->rssi_hyst;
12836         n = wdev->cqm_config->n_rssi_thresholds;
12837
12838         for (i = 0; i < n; i++) {
12839                 i = array_index_nospec(i, n);
12840                 if (last < wdev->cqm_config->rssi_thresholds[i])
12841                         break;
12842         }
12843
12844         low_index = i - 1;
12845         if (low_index >= 0) {
12846                 low_index = array_index_nospec(low_index, n);
12847                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12848         } else {
12849                 low = S32_MIN;
12850         }
12851         if (i < n) {
12852                 i = array_index_nospec(i, n);
12853                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12854         } else {
12855                 high = S32_MAX;
12856         }
12857
12858         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12859 }
12860
12861 static int nl80211_set_cqm_rssi(struct genl_info *info,
12862                                 const s32 *thresholds, int n_thresholds,
12863                                 u32 hysteresis)
12864 {
12865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12866         struct net_device *dev = info->user_ptr[1];
12867         struct wireless_dev *wdev = dev->ieee80211_ptr;
12868         int i, err;
12869         s32 prev = S32_MIN;
12870
12871         /* Check all values negative and sorted */
12872         for (i = 0; i < n_thresholds; i++) {
12873                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12874                         return -EINVAL;
12875
12876                 prev = thresholds[i];
12877         }
12878
12879         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12880             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12881                 return -EOPNOTSUPP;
12882
12883         wdev_lock(wdev);
12884         cfg80211_cqm_config_free(wdev);
12885         wdev_unlock(wdev);
12886
12887         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12888                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12889                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12890
12891                 return rdev_set_cqm_rssi_config(rdev, dev,
12892                                                 thresholds[0], hysteresis);
12893         }
12894
12895         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12896                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12897                 return -EOPNOTSUPP;
12898
12899         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12900                 n_thresholds = 0;
12901
12902         wdev_lock(wdev);
12903         if (n_thresholds) {
12904                 struct cfg80211_cqm_config *cqm_config;
12905
12906                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12907                                                  n_thresholds),
12908                                      GFP_KERNEL);
12909                 if (!cqm_config) {
12910                         err = -ENOMEM;
12911                         goto unlock;
12912                 }
12913
12914                 cqm_config->rssi_hyst = hysteresis;
12915                 cqm_config->n_rssi_thresholds = n_thresholds;
12916                 memcpy(cqm_config->rssi_thresholds, thresholds,
12917                        flex_array_size(cqm_config, rssi_thresholds,
12918                                        n_thresholds));
12919
12920                 wdev->cqm_config = cqm_config;
12921         }
12922
12923         err = cfg80211_cqm_rssi_update(rdev, dev);
12924
12925 unlock:
12926         wdev_unlock(wdev);
12927
12928         return err;
12929 }
12930
12931 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12932 {
12933         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12934         struct nlattr *cqm;
12935         int err;
12936
12937         cqm = info->attrs[NL80211_ATTR_CQM];
12938         if (!cqm)
12939                 return -EINVAL;
12940
12941         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12942                                           nl80211_attr_cqm_policy,
12943                                           info->extack);
12944         if (err)
12945                 return err;
12946
12947         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12948             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12949                 const s32 *thresholds =
12950                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12951                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12952                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12953
12954                 if (len % 4)
12955                         return -EINVAL;
12956
12957                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12958                                             hysteresis);
12959         }
12960
12961         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12962             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12963             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12964                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12965                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12966                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12967
12968                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12969         }
12970
12971         return -EINVAL;
12972 }
12973
12974 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12975 {
12976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12977         struct net_device *dev = info->user_ptr[1];
12978         struct ocb_setup setup = {};
12979         int err;
12980
12981         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12982         if (err)
12983                 return err;
12984
12985         return cfg80211_join_ocb(rdev, dev, &setup);
12986 }
12987
12988 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12989 {
12990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12991         struct net_device *dev = info->user_ptr[1];
12992
12993         return cfg80211_leave_ocb(rdev, dev);
12994 }
12995
12996 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12997 {
12998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12999         struct net_device *dev = info->user_ptr[1];
13000         struct mesh_config cfg;
13001         struct mesh_setup setup;
13002         int err;
13003
13004         /* start with default */
13005         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13006         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13007
13008         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13009                 /* and parse parameters if given */
13010                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13011                 if (err)
13012                         return err;
13013         }
13014
13015         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13016             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13017                 return -EINVAL;
13018
13019         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13020         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13021
13022         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13023             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13024                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13025                         return -EINVAL;
13026
13027         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13028                 setup.beacon_interval =
13029                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13030
13031                 err = cfg80211_validate_beacon_int(rdev,
13032                                                    NL80211_IFTYPE_MESH_POINT,
13033                                                    setup.beacon_interval);
13034                 if (err)
13035                         return err;
13036         }
13037
13038         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13039                 setup.dtim_period =
13040                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13041                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13042                         return -EINVAL;
13043         }
13044
13045         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13046                 /* parse additional setup parameters if given */
13047                 err = nl80211_parse_mesh_setup(info, &setup);
13048                 if (err)
13049                         return err;
13050         }
13051
13052         if (setup.user_mpm)
13053                 cfg.auto_open_plinks = false;
13054
13055         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13056                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13057                 if (err)
13058                         return err;
13059         } else {
13060                 /* __cfg80211_join_mesh() will sort it out */
13061                 setup.chandef.chan = NULL;
13062         }
13063
13064         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13065                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13066                 int n_rates =
13067                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13068                 struct ieee80211_supported_band *sband;
13069
13070                 if (!setup.chandef.chan)
13071                         return -EINVAL;
13072
13073                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13074
13075                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13076                                              &setup.basic_rates);
13077                 if (err)
13078                         return err;
13079         }
13080
13081         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13082                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13083                                                     NL80211_ATTR_TX_RATES,
13084                                                     &setup.beacon_rate,
13085                                                     dev, false, 0);
13086                 if (err)
13087                         return err;
13088
13089                 if (!setup.chandef.chan)
13090                         return -EINVAL;
13091
13092                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13093                                               &setup.beacon_rate);
13094                 if (err)
13095                         return err;
13096         }
13097
13098         setup.userspace_handles_dfs =
13099                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13100
13101         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13102                 int r = validate_pae_over_nl80211(rdev, info);
13103
13104                 if (r < 0)
13105                         return r;
13106
13107                 setup.control_port_over_nl80211 = true;
13108         }
13109
13110         wdev_lock(dev->ieee80211_ptr);
13111         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13112         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13113                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13114         wdev_unlock(dev->ieee80211_ptr);
13115
13116         return err;
13117 }
13118
13119 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13120 {
13121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13122         struct net_device *dev = info->user_ptr[1];
13123
13124         return cfg80211_leave_mesh(rdev, dev);
13125 }
13126
13127 #ifdef CONFIG_PM
13128 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13129                                         struct cfg80211_registered_device *rdev)
13130 {
13131         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13132         struct nlattr *nl_pats, *nl_pat;
13133         int i, pat_len;
13134
13135         if (!wowlan->n_patterns)
13136                 return 0;
13137
13138         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13139         if (!nl_pats)
13140                 return -ENOBUFS;
13141
13142         for (i = 0; i < wowlan->n_patterns; i++) {
13143                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13144                 if (!nl_pat)
13145                         return -ENOBUFS;
13146                 pat_len = wowlan->patterns[i].pattern_len;
13147                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13148                             wowlan->patterns[i].mask) ||
13149                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13150                             wowlan->patterns[i].pattern) ||
13151                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13152                                 wowlan->patterns[i].pkt_offset))
13153                         return -ENOBUFS;
13154                 nla_nest_end(msg, nl_pat);
13155         }
13156         nla_nest_end(msg, nl_pats);
13157
13158         return 0;
13159 }
13160
13161 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13162                                    struct cfg80211_wowlan_tcp *tcp)
13163 {
13164         struct nlattr *nl_tcp;
13165
13166         if (!tcp)
13167                 return 0;
13168
13169         nl_tcp = nla_nest_start_noflag(msg,
13170                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13171         if (!nl_tcp)
13172                 return -ENOBUFS;
13173
13174         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13175             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13176             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13177             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13178             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13179             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13180                     tcp->payload_len, tcp->payload) ||
13181             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13182                         tcp->data_interval) ||
13183             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13184                     tcp->wake_len, tcp->wake_data) ||
13185             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13186                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13187                 return -ENOBUFS;
13188
13189         if (tcp->payload_seq.len &&
13190             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13191                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13192                 return -ENOBUFS;
13193
13194         if (tcp->payload_tok.len &&
13195             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13196                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13197                     &tcp->payload_tok))
13198                 return -ENOBUFS;
13199
13200         nla_nest_end(msg, nl_tcp);
13201
13202         return 0;
13203 }
13204
13205 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13206                                   struct cfg80211_sched_scan_request *req)
13207 {
13208         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13209         int i;
13210
13211         if (!req)
13212                 return 0;
13213
13214         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13215         if (!nd)
13216                 return -ENOBUFS;
13217
13218         if (req->n_scan_plans == 1 &&
13219             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13220                         req->scan_plans[0].interval * 1000))
13221                 return -ENOBUFS;
13222
13223         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13224                 return -ENOBUFS;
13225
13226         if (req->relative_rssi_set) {
13227                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13228
13229                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13230                                req->relative_rssi))
13231                         return -ENOBUFS;
13232
13233                 rssi_adjust.band = req->rssi_adjust.band;
13234                 rssi_adjust.delta = req->rssi_adjust.delta;
13235                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13236                             sizeof(rssi_adjust), &rssi_adjust))
13237                         return -ENOBUFS;
13238         }
13239
13240         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13241         if (!freqs)
13242                 return -ENOBUFS;
13243
13244         for (i = 0; i < req->n_channels; i++) {
13245                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13246                         return -ENOBUFS;
13247         }
13248
13249         nla_nest_end(msg, freqs);
13250
13251         if (req->n_match_sets) {
13252                 matches = nla_nest_start_noflag(msg,
13253                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13254                 if (!matches)
13255                         return -ENOBUFS;
13256
13257                 for (i = 0; i < req->n_match_sets; i++) {
13258                         match = nla_nest_start_noflag(msg, i);
13259                         if (!match)
13260                                 return -ENOBUFS;
13261
13262                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13263                                     req->match_sets[i].ssid.ssid_len,
13264                                     req->match_sets[i].ssid.ssid))
13265                                 return -ENOBUFS;
13266                         nla_nest_end(msg, match);
13267                 }
13268                 nla_nest_end(msg, matches);
13269         }
13270
13271         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13272         if (!scan_plans)
13273                 return -ENOBUFS;
13274
13275         for (i = 0; i < req->n_scan_plans; i++) {
13276                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13277                 if (!scan_plan)
13278                         return -ENOBUFS;
13279
13280                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13281                                 req->scan_plans[i].interval) ||
13282                     (req->scan_plans[i].iterations &&
13283                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13284                                  req->scan_plans[i].iterations)))
13285                         return -ENOBUFS;
13286                 nla_nest_end(msg, scan_plan);
13287         }
13288         nla_nest_end(msg, scan_plans);
13289
13290         nla_nest_end(msg, nd);
13291
13292         return 0;
13293 }
13294
13295 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13296 {
13297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13298         struct sk_buff *msg;
13299         void *hdr;
13300         u32 size = NLMSG_DEFAULT_SIZE;
13301
13302         if (!rdev->wiphy.wowlan)
13303                 return -EOPNOTSUPP;
13304
13305         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13306                 /* adjust size to have room for all the data */
13307                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13308                         rdev->wiphy.wowlan_config->tcp->payload_len +
13309                         rdev->wiphy.wowlan_config->tcp->wake_len +
13310                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13311         }
13312
13313         msg = nlmsg_new(size, GFP_KERNEL);
13314         if (!msg)
13315                 return -ENOMEM;
13316
13317         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13318                              NL80211_CMD_GET_WOWLAN);
13319         if (!hdr)
13320                 goto nla_put_failure;
13321
13322         if (rdev->wiphy.wowlan_config) {
13323                 struct nlattr *nl_wowlan;
13324
13325                 nl_wowlan = nla_nest_start_noflag(msg,
13326                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13327                 if (!nl_wowlan)
13328                         goto nla_put_failure;
13329
13330                 if ((rdev->wiphy.wowlan_config->any &&
13331                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13332                     (rdev->wiphy.wowlan_config->disconnect &&
13333                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13334                     (rdev->wiphy.wowlan_config->magic_pkt &&
13335                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13336                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13337                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13338                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13339                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13340                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13341                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13342                     (rdev->wiphy.wowlan_config->rfkill_release &&
13343                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13344                         goto nla_put_failure;
13345
13346                 if (nl80211_send_wowlan_patterns(msg, rdev))
13347                         goto nla_put_failure;
13348
13349                 if (nl80211_send_wowlan_tcp(msg,
13350                                             rdev->wiphy.wowlan_config->tcp))
13351                         goto nla_put_failure;
13352
13353                 if (nl80211_send_wowlan_nd(
13354                             msg,
13355                             rdev->wiphy.wowlan_config->nd_config))
13356                         goto nla_put_failure;
13357
13358                 nla_nest_end(msg, nl_wowlan);
13359         }
13360
13361         genlmsg_end(msg, hdr);
13362         return genlmsg_reply(msg, info);
13363
13364 nla_put_failure:
13365         nlmsg_free(msg);
13366         return -ENOBUFS;
13367 }
13368
13369 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13370                                     struct nlattr *attr,
13371                                     struct cfg80211_wowlan *trig)
13372 {
13373         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13374         struct cfg80211_wowlan_tcp *cfg;
13375         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13376         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13377         u32 size;
13378         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13379         int err, port;
13380
13381         if (!rdev->wiphy.wowlan->tcp)
13382                 return -EINVAL;
13383
13384         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13385                                           nl80211_wowlan_tcp_policy, NULL);
13386         if (err)
13387                 return err;
13388
13389         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13390             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13391             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13392             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13393             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13394             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13395             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13396             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13397                 return -EINVAL;
13398
13399         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13400         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13401                 return -EINVAL;
13402
13403         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13404                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13405             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13406                 return -EINVAL;
13407
13408         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13409         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13410                 return -EINVAL;
13411
13412         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13413         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13414                 return -EINVAL;
13415
13416         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13417                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13418
13419                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13420                 tokens_size = tokln - sizeof(*tok);
13421
13422                 if (!tok->len || tokens_size % tok->len)
13423                         return -EINVAL;
13424                 if (!rdev->wiphy.wowlan->tcp->tok)
13425                         return -EINVAL;
13426                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13427                         return -EINVAL;
13428                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13429                         return -EINVAL;
13430                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13431                         return -EINVAL;
13432                 if (tok->offset + tok->len > data_size)
13433                         return -EINVAL;
13434         }
13435
13436         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13437                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13438                 if (!rdev->wiphy.wowlan->tcp->seq)
13439                         return -EINVAL;
13440                 if (seq->len == 0 || seq->len > 4)
13441                         return -EINVAL;
13442                 if (seq->len + seq->offset > data_size)
13443                         return -EINVAL;
13444         }
13445
13446         size = sizeof(*cfg);
13447         size += data_size;
13448         size += wake_size + wake_mask_size;
13449         size += tokens_size;
13450
13451         cfg = kzalloc(size, GFP_KERNEL);
13452         if (!cfg)
13453                 return -ENOMEM;
13454         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13455         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13456         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13457                ETH_ALEN);
13458         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13459                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13460         else
13461                 port = 0;
13462 #ifdef CONFIG_INET
13463         /* allocate a socket and port for it and use it */
13464         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13465                             IPPROTO_TCP, &cfg->sock, 1);
13466         if (err) {
13467                 kfree(cfg);
13468                 return err;
13469         }
13470         if (inet_csk_get_port(cfg->sock->sk, port)) {
13471                 sock_release(cfg->sock);
13472                 kfree(cfg);
13473                 return -EADDRINUSE;
13474         }
13475         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13476 #else
13477         if (!port) {
13478                 kfree(cfg);
13479                 return -EINVAL;
13480         }
13481         cfg->src_port = port;
13482 #endif
13483
13484         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13485         cfg->payload_len = data_size;
13486         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13487         memcpy((void *)cfg->payload,
13488                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13489                data_size);
13490         if (seq)
13491                 cfg->payload_seq = *seq;
13492         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13493         cfg->wake_len = wake_size;
13494         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13495         memcpy((void *)cfg->wake_data,
13496                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13497                wake_size);
13498         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13499                          data_size + wake_size;
13500         memcpy((void *)cfg->wake_mask,
13501                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13502                wake_mask_size);
13503         if (tok) {
13504                 cfg->tokens_size = tokens_size;
13505                 cfg->payload_tok = *tok;
13506                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13507                        tokens_size);
13508         }
13509
13510         trig->tcp = cfg;
13511
13512         return 0;
13513 }
13514
13515 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13516                                    const struct wiphy_wowlan_support *wowlan,
13517                                    struct nlattr *attr,
13518                                    struct cfg80211_wowlan *trig)
13519 {
13520         struct nlattr **tb;
13521         int err;
13522
13523         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13524         if (!tb)
13525                 return -ENOMEM;
13526
13527         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13528                 err = -EOPNOTSUPP;
13529                 goto out;
13530         }
13531
13532         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13533                                           nl80211_policy, NULL);
13534         if (err)
13535                 goto out;
13536
13537         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13538                                                    wowlan->max_nd_match_sets);
13539         err = PTR_ERR_OR_ZERO(trig->nd_config);
13540         if (err)
13541                 trig->nd_config = NULL;
13542
13543 out:
13544         kfree(tb);
13545         return err;
13546 }
13547
13548 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13549 {
13550         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13551         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13552         struct cfg80211_wowlan new_triggers = {};
13553         struct cfg80211_wowlan *ntrig;
13554         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13555         int err, i;
13556         bool prev_enabled = rdev->wiphy.wowlan_config;
13557         bool regular = false;
13558
13559         if (!wowlan)
13560                 return -EOPNOTSUPP;
13561
13562         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13563                 cfg80211_rdev_free_wowlan(rdev);
13564                 rdev->wiphy.wowlan_config = NULL;
13565                 goto set_wakeup;
13566         }
13567
13568         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13569                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13570                                           nl80211_wowlan_policy, info->extack);
13571         if (err)
13572                 return err;
13573
13574         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13575                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13576                         return -EINVAL;
13577                 new_triggers.any = true;
13578         }
13579
13580         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13581                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13582                         return -EINVAL;
13583                 new_triggers.disconnect = true;
13584                 regular = true;
13585         }
13586
13587         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13588                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13589                         return -EINVAL;
13590                 new_triggers.magic_pkt = true;
13591                 regular = true;
13592         }
13593
13594         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13595                 return -EINVAL;
13596
13597         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13598                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13599                         return -EINVAL;
13600                 new_triggers.gtk_rekey_failure = true;
13601                 regular = true;
13602         }
13603
13604         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13605                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13606                         return -EINVAL;
13607                 new_triggers.eap_identity_req = true;
13608                 regular = true;
13609         }
13610
13611         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13612                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13613                         return -EINVAL;
13614                 new_triggers.four_way_handshake = true;
13615                 regular = true;
13616         }
13617
13618         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13619                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13620                         return -EINVAL;
13621                 new_triggers.rfkill_release = true;
13622                 regular = true;
13623         }
13624
13625         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13626                 struct nlattr *pat;
13627                 int n_patterns = 0;
13628                 int rem, pat_len, mask_len, pkt_offset;
13629                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13630
13631                 regular = true;
13632
13633                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13634                                     rem)
13635                         n_patterns++;
13636                 if (n_patterns > wowlan->n_patterns)
13637                         return -EINVAL;
13638
13639                 new_triggers.patterns = kcalloc(n_patterns,
13640                                                 sizeof(new_triggers.patterns[0]),
13641                                                 GFP_KERNEL);
13642                 if (!new_triggers.patterns)
13643                         return -ENOMEM;
13644
13645                 new_triggers.n_patterns = n_patterns;
13646                 i = 0;
13647
13648                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13649                                     rem) {
13650                         u8 *mask_pat;
13651
13652                         err = nla_parse_nested_deprecated(pat_tb,
13653                                                           MAX_NL80211_PKTPAT,
13654                                                           pat,
13655                                                           nl80211_packet_pattern_policy,
13656                                                           info->extack);
13657                         if (err)
13658                                 goto error;
13659
13660                         err = -EINVAL;
13661                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13662                             !pat_tb[NL80211_PKTPAT_PATTERN])
13663                                 goto error;
13664                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13665                         mask_len = DIV_ROUND_UP(pat_len, 8);
13666                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13667                                 goto error;
13668                         if (pat_len > wowlan->pattern_max_len ||
13669                             pat_len < wowlan->pattern_min_len)
13670                                 goto error;
13671
13672                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13673                                 pkt_offset = 0;
13674                         else
13675                                 pkt_offset = nla_get_u32(
13676                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13677                         if (pkt_offset > wowlan->max_pkt_offset)
13678                                 goto error;
13679                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13680
13681                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13682                         if (!mask_pat) {
13683                                 err = -ENOMEM;
13684                                 goto error;
13685                         }
13686                         new_triggers.patterns[i].mask = mask_pat;
13687                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13688                                mask_len);
13689                         mask_pat += mask_len;
13690                         new_triggers.patterns[i].pattern = mask_pat;
13691                         new_triggers.patterns[i].pattern_len = pat_len;
13692                         memcpy(mask_pat,
13693                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13694                                pat_len);
13695                         i++;
13696                 }
13697         }
13698
13699         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13700                 regular = true;
13701                 err = nl80211_parse_wowlan_tcp(
13702                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13703                         &new_triggers);
13704                 if (err)
13705                         goto error;
13706         }
13707
13708         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13709                 regular = true;
13710                 err = nl80211_parse_wowlan_nd(
13711                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13712                         &new_triggers);
13713                 if (err)
13714                         goto error;
13715         }
13716
13717         /* The 'any' trigger means the device continues operating more or less
13718          * as in its normal operation mode and wakes up the host on most of the
13719          * normal interrupts (like packet RX, ...)
13720          * It therefore makes little sense to combine with the more constrained
13721          * wakeup trigger modes.
13722          */
13723         if (new_triggers.any && regular) {
13724                 err = -EINVAL;
13725                 goto error;
13726         }
13727
13728         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13729         if (!ntrig) {
13730                 err = -ENOMEM;
13731                 goto error;
13732         }
13733         cfg80211_rdev_free_wowlan(rdev);
13734         rdev->wiphy.wowlan_config = ntrig;
13735
13736  set_wakeup:
13737         if (rdev->ops->set_wakeup &&
13738             prev_enabled != !!rdev->wiphy.wowlan_config)
13739                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13740
13741         return 0;
13742  error:
13743         for (i = 0; i < new_triggers.n_patterns; i++)
13744                 kfree(new_triggers.patterns[i].mask);
13745         kfree(new_triggers.patterns);
13746         if (new_triggers.tcp && new_triggers.tcp->sock)
13747                 sock_release(new_triggers.tcp->sock);
13748         kfree(new_triggers.tcp);
13749         kfree(new_triggers.nd_config);
13750         return err;
13751 }
13752 #endif
13753
13754 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13755                                        struct cfg80211_registered_device *rdev)
13756 {
13757         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13758         int i, j, pat_len;
13759         struct cfg80211_coalesce_rules *rule;
13760
13761         if (!rdev->coalesce->n_rules)
13762                 return 0;
13763
13764         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13765         if (!nl_rules)
13766                 return -ENOBUFS;
13767
13768         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13769                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13770                 if (!nl_rule)
13771                         return -ENOBUFS;
13772
13773                 rule = &rdev->coalesce->rules[i];
13774                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13775                                 rule->delay))
13776                         return -ENOBUFS;
13777
13778                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13779                                 rule->condition))
13780                         return -ENOBUFS;
13781
13782                 nl_pats = nla_nest_start_noflag(msg,
13783                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13784                 if (!nl_pats)
13785                         return -ENOBUFS;
13786
13787                 for (j = 0; j < rule->n_patterns; j++) {
13788                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13789                         if (!nl_pat)
13790                                 return -ENOBUFS;
13791                         pat_len = rule->patterns[j].pattern_len;
13792                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13793                                     DIV_ROUND_UP(pat_len, 8),
13794                                     rule->patterns[j].mask) ||
13795                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13796                                     rule->patterns[j].pattern) ||
13797                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13798                                         rule->patterns[j].pkt_offset))
13799                                 return -ENOBUFS;
13800                         nla_nest_end(msg, nl_pat);
13801                 }
13802                 nla_nest_end(msg, nl_pats);
13803                 nla_nest_end(msg, nl_rule);
13804         }
13805         nla_nest_end(msg, nl_rules);
13806
13807         return 0;
13808 }
13809
13810 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13811 {
13812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13813         struct sk_buff *msg;
13814         void *hdr;
13815
13816         if (!rdev->wiphy.coalesce)
13817                 return -EOPNOTSUPP;
13818
13819         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13820         if (!msg)
13821                 return -ENOMEM;
13822
13823         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13824                              NL80211_CMD_GET_COALESCE);
13825         if (!hdr)
13826                 goto nla_put_failure;
13827
13828         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13829                 goto nla_put_failure;
13830
13831         genlmsg_end(msg, hdr);
13832         return genlmsg_reply(msg, info);
13833
13834 nla_put_failure:
13835         nlmsg_free(msg);
13836         return -ENOBUFS;
13837 }
13838
13839 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13840 {
13841         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13842         int i, j;
13843         struct cfg80211_coalesce_rules *rule;
13844
13845         if (!coalesce)
13846                 return;
13847
13848         for (i = 0; i < coalesce->n_rules; i++) {
13849                 rule = &coalesce->rules[i];
13850                 for (j = 0; j < rule->n_patterns; j++)
13851                         kfree(rule->patterns[j].mask);
13852                 kfree(rule->patterns);
13853         }
13854         kfree(coalesce->rules);
13855         kfree(coalesce);
13856         rdev->coalesce = NULL;
13857 }
13858
13859 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13860                                        struct nlattr *rule,
13861                                        struct cfg80211_coalesce_rules *new_rule)
13862 {
13863         int err, i;
13864         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13865         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13866         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13867         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13868
13869         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13870                                           rule, nl80211_coalesce_policy, NULL);
13871         if (err)
13872                 return err;
13873
13874         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13875                 new_rule->delay =
13876                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13877         if (new_rule->delay > coalesce->max_delay)
13878                 return -EINVAL;
13879
13880         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13881                 new_rule->condition =
13882                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13883
13884         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13885                 return -EINVAL;
13886
13887         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13888                             rem)
13889                 n_patterns++;
13890         if (n_patterns > coalesce->n_patterns)
13891                 return -EINVAL;
13892
13893         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13894                                      GFP_KERNEL);
13895         if (!new_rule->patterns)
13896                 return -ENOMEM;
13897
13898         new_rule->n_patterns = n_patterns;
13899         i = 0;
13900
13901         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13902                             rem) {
13903                 u8 *mask_pat;
13904
13905                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13906                                                   pat,
13907                                                   nl80211_packet_pattern_policy,
13908                                                   NULL);
13909                 if (err)
13910                         return err;
13911
13912                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13913                     !pat_tb[NL80211_PKTPAT_PATTERN])
13914                         return -EINVAL;
13915                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13916                 mask_len = DIV_ROUND_UP(pat_len, 8);
13917                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13918                         return -EINVAL;
13919                 if (pat_len > coalesce->pattern_max_len ||
13920                     pat_len < coalesce->pattern_min_len)
13921                         return -EINVAL;
13922
13923                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13924                         pkt_offset = 0;
13925                 else
13926                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13927                 if (pkt_offset > coalesce->max_pkt_offset)
13928                         return -EINVAL;
13929                 new_rule->patterns[i].pkt_offset = pkt_offset;
13930
13931                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13932                 if (!mask_pat)
13933                         return -ENOMEM;
13934
13935                 new_rule->patterns[i].mask = mask_pat;
13936                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13937                        mask_len);
13938
13939                 mask_pat += mask_len;
13940                 new_rule->patterns[i].pattern = mask_pat;
13941                 new_rule->patterns[i].pattern_len = pat_len;
13942                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13943                        pat_len);
13944                 i++;
13945         }
13946
13947         return 0;
13948 }
13949
13950 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13951 {
13952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13953         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13954         struct cfg80211_coalesce new_coalesce = {};
13955         struct cfg80211_coalesce *n_coalesce;
13956         int err, rem_rule, n_rules = 0, i, j;
13957         struct nlattr *rule;
13958         struct cfg80211_coalesce_rules *tmp_rule;
13959
13960         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13961                 return -EOPNOTSUPP;
13962
13963         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13964                 cfg80211_rdev_free_coalesce(rdev);
13965                 rdev_set_coalesce(rdev, NULL);
13966                 return 0;
13967         }
13968
13969         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13970                             rem_rule)
13971                 n_rules++;
13972         if (n_rules > coalesce->n_rules)
13973                 return -EINVAL;
13974
13975         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13976                                      GFP_KERNEL);
13977         if (!new_coalesce.rules)
13978                 return -ENOMEM;
13979
13980         new_coalesce.n_rules = n_rules;
13981         i = 0;
13982
13983         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13984                             rem_rule) {
13985                 err = nl80211_parse_coalesce_rule(rdev, rule,
13986                                                   &new_coalesce.rules[i]);
13987                 if (err)
13988                         goto error;
13989
13990                 i++;
13991         }
13992
13993         err = rdev_set_coalesce(rdev, &new_coalesce);
13994         if (err)
13995                 goto error;
13996
13997         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13998         if (!n_coalesce) {
13999                 err = -ENOMEM;
14000                 goto error;
14001         }
14002         cfg80211_rdev_free_coalesce(rdev);
14003         rdev->coalesce = n_coalesce;
14004
14005         return 0;
14006 error:
14007         for (i = 0; i < new_coalesce.n_rules; i++) {
14008                 tmp_rule = &new_coalesce.rules[i];
14009                 for (j = 0; j < tmp_rule->n_patterns; j++)
14010                         kfree(tmp_rule->patterns[j].mask);
14011                 kfree(tmp_rule->patterns);
14012         }
14013         kfree(new_coalesce.rules);
14014
14015         return err;
14016 }
14017
14018 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14019 {
14020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14021         struct net_device *dev = info->user_ptr[1];
14022         struct wireless_dev *wdev = dev->ieee80211_ptr;
14023         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14024         struct cfg80211_gtk_rekey_data rekey_data = {};
14025         int err;
14026
14027         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14028                 return -EINVAL;
14029
14030         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14031                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14032                                           nl80211_rekey_policy, info->extack);
14033         if (err)
14034                 return err;
14035
14036         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14037             !tb[NL80211_REKEY_DATA_KCK])
14038                 return -EINVAL;
14039         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14040             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14041               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14042                 return -ERANGE;
14043         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14044             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14045               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14046              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14047                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14048                 return -ERANGE;
14049
14050         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14051         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14052         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14053         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14054         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14055         if (tb[NL80211_REKEY_DATA_AKM])
14056                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14057
14058         wdev_lock(wdev);
14059         if (!wdev->connected) {
14060                 err = -ENOTCONN;
14061                 goto out;
14062         }
14063
14064         if (!rdev->ops->set_rekey_data) {
14065                 err = -EOPNOTSUPP;
14066                 goto out;
14067         }
14068
14069         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
14070  out:
14071         wdev_unlock(wdev);
14072         return err;
14073 }
14074
14075 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14076                                              struct genl_info *info)
14077 {
14078         struct net_device *dev = info->user_ptr[1];
14079         struct wireless_dev *wdev = dev->ieee80211_ptr;
14080
14081         if (wdev->iftype != NL80211_IFTYPE_AP &&
14082             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14083                 return -EINVAL;
14084
14085         if (wdev->ap_unexpected_nlportid)
14086                 return -EBUSY;
14087
14088         wdev->ap_unexpected_nlportid = info->snd_portid;
14089         return 0;
14090 }
14091
14092 static int nl80211_probe_client(struct sk_buff *skb,
14093                                 struct genl_info *info)
14094 {
14095         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14096         struct net_device *dev = info->user_ptr[1];
14097         struct wireless_dev *wdev = dev->ieee80211_ptr;
14098         struct sk_buff *msg;
14099         void *hdr;
14100         const u8 *addr;
14101         u64 cookie;
14102         int err;
14103
14104         if (wdev->iftype != NL80211_IFTYPE_AP &&
14105             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14106                 return -EOPNOTSUPP;
14107
14108         if (!info->attrs[NL80211_ATTR_MAC])
14109                 return -EINVAL;
14110
14111         if (!rdev->ops->probe_client)
14112                 return -EOPNOTSUPP;
14113
14114         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14115         if (!msg)
14116                 return -ENOMEM;
14117
14118         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14119                              NL80211_CMD_PROBE_CLIENT);
14120         if (!hdr) {
14121                 err = -ENOBUFS;
14122                 goto free_msg;
14123         }
14124
14125         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14126
14127         err = rdev_probe_client(rdev, dev, addr, &cookie);
14128         if (err)
14129                 goto free_msg;
14130
14131         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14132                               NL80211_ATTR_PAD))
14133                 goto nla_put_failure;
14134
14135         genlmsg_end(msg, hdr);
14136
14137         return genlmsg_reply(msg, info);
14138
14139  nla_put_failure:
14140         err = -ENOBUFS;
14141  free_msg:
14142         nlmsg_free(msg);
14143         return err;
14144 }
14145
14146 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14147 {
14148         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14149         struct cfg80211_beacon_registration *reg, *nreg;
14150         int rv;
14151
14152         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14153                 return -EOPNOTSUPP;
14154
14155         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14156         if (!nreg)
14157                 return -ENOMEM;
14158
14159         /* First, check if already registered. */
14160         spin_lock_bh(&rdev->beacon_registrations_lock);
14161         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14162                 if (reg->nlportid == info->snd_portid) {
14163                         rv = -EALREADY;
14164                         goto out_err;
14165                 }
14166         }
14167         /* Add it to the list */
14168         nreg->nlportid = info->snd_portid;
14169         list_add(&nreg->list, &rdev->beacon_registrations);
14170
14171         spin_unlock_bh(&rdev->beacon_registrations_lock);
14172
14173         return 0;
14174 out_err:
14175         spin_unlock_bh(&rdev->beacon_registrations_lock);
14176         kfree(nreg);
14177         return rv;
14178 }
14179
14180 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14181 {
14182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14183         struct wireless_dev *wdev = info->user_ptr[1];
14184         int err;
14185
14186         if (!rdev->ops->start_p2p_device)
14187                 return -EOPNOTSUPP;
14188
14189         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14190                 return -EOPNOTSUPP;
14191
14192         if (wdev_running(wdev))
14193                 return 0;
14194
14195         if (rfkill_blocked(rdev->wiphy.rfkill))
14196                 return -ERFKILL;
14197
14198         err = rdev_start_p2p_device(rdev, wdev);
14199         if (err)
14200                 return err;
14201
14202         wdev->is_running = true;
14203         rdev->opencount++;
14204
14205         return 0;
14206 }
14207
14208 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14209 {
14210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14211         struct wireless_dev *wdev = info->user_ptr[1];
14212
14213         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14214                 return -EOPNOTSUPP;
14215
14216         if (!rdev->ops->stop_p2p_device)
14217                 return -EOPNOTSUPP;
14218
14219         cfg80211_stop_p2p_device(rdev, wdev);
14220
14221         return 0;
14222 }
14223
14224 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14225 {
14226         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14227         struct wireless_dev *wdev = info->user_ptr[1];
14228         struct cfg80211_nan_conf conf = {};
14229         int err;
14230
14231         if (wdev->iftype != NL80211_IFTYPE_NAN)
14232                 return -EOPNOTSUPP;
14233
14234         if (wdev_running(wdev))
14235                 return -EEXIST;
14236
14237         if (rfkill_blocked(rdev->wiphy.rfkill))
14238                 return -ERFKILL;
14239
14240         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14241                 return -EINVAL;
14242
14243         conf.master_pref =
14244                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14245
14246         if (info->attrs[NL80211_ATTR_BANDS]) {
14247                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14248
14249                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14250                         return -EOPNOTSUPP;
14251
14252                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14253                         return -EINVAL;
14254
14255                 conf.bands = bands;
14256         }
14257
14258         err = rdev_start_nan(rdev, wdev, &conf);
14259         if (err)
14260                 return err;
14261
14262         wdev->is_running = true;
14263         rdev->opencount++;
14264
14265         return 0;
14266 }
14267
14268 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14269 {
14270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14271         struct wireless_dev *wdev = info->user_ptr[1];
14272
14273         if (wdev->iftype != NL80211_IFTYPE_NAN)
14274                 return -EOPNOTSUPP;
14275
14276         cfg80211_stop_nan(rdev, wdev);
14277
14278         return 0;
14279 }
14280
14281 static int validate_nan_filter(struct nlattr *filter_attr)
14282 {
14283         struct nlattr *attr;
14284         int len = 0, n_entries = 0, rem;
14285
14286         nla_for_each_nested(attr, filter_attr, rem) {
14287                 len += nla_len(attr);
14288                 n_entries++;
14289         }
14290
14291         if (len >= U8_MAX)
14292                 return -EINVAL;
14293
14294         return n_entries;
14295 }
14296
14297 static int handle_nan_filter(struct nlattr *attr_filter,
14298                              struct cfg80211_nan_func *func,
14299                              bool tx)
14300 {
14301         struct nlattr *attr;
14302         int n_entries, rem, i;
14303         struct cfg80211_nan_func_filter *filter;
14304
14305         n_entries = validate_nan_filter(attr_filter);
14306         if (n_entries < 0)
14307                 return n_entries;
14308
14309         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14310
14311         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14312         if (!filter)
14313                 return -ENOMEM;
14314
14315         i = 0;
14316         nla_for_each_nested(attr, attr_filter, rem) {
14317                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14318                 if (!filter[i].filter)
14319                         goto err;
14320
14321                 filter[i].len = nla_len(attr);
14322                 i++;
14323         }
14324         if (tx) {
14325                 func->num_tx_filters = n_entries;
14326                 func->tx_filters = filter;
14327         } else {
14328                 func->num_rx_filters = n_entries;
14329                 func->rx_filters = filter;
14330         }
14331
14332         return 0;
14333
14334 err:
14335         i = 0;
14336         nla_for_each_nested(attr, attr_filter, rem) {
14337                 kfree(filter[i].filter);
14338                 i++;
14339         }
14340         kfree(filter);
14341         return -ENOMEM;
14342 }
14343
14344 static int nl80211_nan_add_func(struct sk_buff *skb,
14345                                 struct genl_info *info)
14346 {
14347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14348         struct wireless_dev *wdev = info->user_ptr[1];
14349         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14350         struct cfg80211_nan_func *func;
14351         struct sk_buff *msg = NULL;
14352         void *hdr = NULL;
14353         int err = 0;
14354
14355         if (wdev->iftype != NL80211_IFTYPE_NAN)
14356                 return -EOPNOTSUPP;
14357
14358         if (!wdev_running(wdev))
14359                 return -ENOTCONN;
14360
14361         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14362                 return -EINVAL;
14363
14364         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14365                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14366                                           nl80211_nan_func_policy,
14367                                           info->extack);
14368         if (err)
14369                 return err;
14370
14371         func = kzalloc(sizeof(*func), GFP_KERNEL);
14372         if (!func)
14373                 return -ENOMEM;
14374
14375         func->cookie = cfg80211_assign_cookie(rdev);
14376
14377         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14378                 err = -EINVAL;
14379                 goto out;
14380         }
14381
14382
14383         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14384
14385         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14386                 err = -EINVAL;
14387                 goto out;
14388         }
14389
14390         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14391                sizeof(func->service_id));
14392
14393         func->close_range =
14394                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14395
14396         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14397                 func->serv_spec_info_len =
14398                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14399                 func->serv_spec_info =
14400                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14401                                 func->serv_spec_info_len,
14402                                 GFP_KERNEL);
14403                 if (!func->serv_spec_info) {
14404                         err = -ENOMEM;
14405                         goto out;
14406                 }
14407         }
14408
14409         if (tb[NL80211_NAN_FUNC_TTL])
14410                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14411
14412         switch (func->type) {
14413         case NL80211_NAN_FUNC_PUBLISH:
14414                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14415                         err = -EINVAL;
14416                         goto out;
14417                 }
14418
14419                 func->publish_type =
14420                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14421                 func->publish_bcast =
14422                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14423
14424                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14425                         func->publish_bcast) {
14426                         err = -EINVAL;
14427                         goto out;
14428                 }
14429                 break;
14430         case NL80211_NAN_FUNC_SUBSCRIBE:
14431                 func->subscribe_active =
14432                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14433                 break;
14434         case NL80211_NAN_FUNC_FOLLOW_UP:
14435                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14436                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14437                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14438                         err = -EINVAL;
14439                         goto out;
14440                 }
14441
14442                 func->followup_id =
14443                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14444                 func->followup_reqid =
14445                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14446                 memcpy(func->followup_dest.addr,
14447                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14448                        sizeof(func->followup_dest.addr));
14449                 if (func->ttl) {
14450                         err = -EINVAL;
14451                         goto out;
14452                 }
14453                 break;
14454         default:
14455                 err = -EINVAL;
14456                 goto out;
14457         }
14458
14459         if (tb[NL80211_NAN_FUNC_SRF]) {
14460                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14461
14462                 err = nla_parse_nested_deprecated(srf_tb,
14463                                                   NL80211_NAN_SRF_ATTR_MAX,
14464                                                   tb[NL80211_NAN_FUNC_SRF],
14465                                                   nl80211_nan_srf_policy,
14466                                                   info->extack);
14467                 if (err)
14468                         goto out;
14469
14470                 func->srf_include =
14471                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14472
14473                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14474                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14475                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14476                                 err = -EINVAL;
14477                                 goto out;
14478                         }
14479
14480                         func->srf_bf_len =
14481                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14482                         func->srf_bf =
14483                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14484                                         func->srf_bf_len, GFP_KERNEL);
14485                         if (!func->srf_bf) {
14486                                 err = -ENOMEM;
14487                                 goto out;
14488                         }
14489
14490                         func->srf_bf_idx =
14491                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14492                 } else {
14493                         struct nlattr *attr, *mac_attr =
14494                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14495                         int n_entries, rem, i = 0;
14496
14497                         if (!mac_attr) {
14498                                 err = -EINVAL;
14499                                 goto out;
14500                         }
14501
14502                         n_entries = validate_acl_mac_addrs(mac_attr);
14503                         if (n_entries <= 0) {
14504                                 err = -EINVAL;
14505                                 goto out;
14506                         }
14507
14508                         func->srf_num_macs = n_entries;
14509                         func->srf_macs =
14510                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14511                                         GFP_KERNEL);
14512                         if (!func->srf_macs) {
14513                                 err = -ENOMEM;
14514                                 goto out;
14515                         }
14516
14517                         nla_for_each_nested(attr, mac_attr, rem)
14518                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14519                                        sizeof(*func->srf_macs));
14520                 }
14521         }
14522
14523         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14524                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14525                                         func, true);
14526                 if (err)
14527                         goto out;
14528         }
14529
14530         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14531                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14532                                         func, false);
14533                 if (err)
14534                         goto out;
14535         }
14536
14537         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14538         if (!msg) {
14539                 err = -ENOMEM;
14540                 goto out;
14541         }
14542
14543         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14544                              NL80211_CMD_ADD_NAN_FUNCTION);
14545         /* This can't really happen - we just allocated 4KB */
14546         if (WARN_ON(!hdr)) {
14547                 err = -ENOMEM;
14548                 goto out;
14549         }
14550
14551         err = rdev_add_nan_func(rdev, wdev, func);
14552 out:
14553         if (err < 0) {
14554                 cfg80211_free_nan_func(func);
14555                 nlmsg_free(msg);
14556                 return err;
14557         }
14558
14559         /* propagate the instance id and cookie to userspace  */
14560         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14561                               NL80211_ATTR_PAD))
14562                 goto nla_put_failure;
14563
14564         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14565         if (!func_attr)
14566                 goto nla_put_failure;
14567
14568         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14569                        func->instance_id))
14570                 goto nla_put_failure;
14571
14572         nla_nest_end(msg, func_attr);
14573
14574         genlmsg_end(msg, hdr);
14575         return genlmsg_reply(msg, info);
14576
14577 nla_put_failure:
14578         nlmsg_free(msg);
14579         return -ENOBUFS;
14580 }
14581
14582 static int nl80211_nan_del_func(struct sk_buff *skb,
14583                                struct genl_info *info)
14584 {
14585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14586         struct wireless_dev *wdev = info->user_ptr[1];
14587         u64 cookie;
14588
14589         if (wdev->iftype != NL80211_IFTYPE_NAN)
14590                 return -EOPNOTSUPP;
14591
14592         if (!wdev_running(wdev))
14593                 return -ENOTCONN;
14594
14595         if (!info->attrs[NL80211_ATTR_COOKIE])
14596                 return -EINVAL;
14597
14598         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14599
14600         rdev_del_nan_func(rdev, wdev, cookie);
14601
14602         return 0;
14603 }
14604
14605 static int nl80211_nan_change_config(struct sk_buff *skb,
14606                                      struct genl_info *info)
14607 {
14608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14609         struct wireless_dev *wdev = info->user_ptr[1];
14610         struct cfg80211_nan_conf conf = {};
14611         u32 changed = 0;
14612
14613         if (wdev->iftype != NL80211_IFTYPE_NAN)
14614                 return -EOPNOTSUPP;
14615
14616         if (!wdev_running(wdev))
14617                 return -ENOTCONN;
14618
14619         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14620                 conf.master_pref =
14621                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14622                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14623                         return -EINVAL;
14624
14625                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14626         }
14627
14628         if (info->attrs[NL80211_ATTR_BANDS]) {
14629                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14630
14631                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14632                         return -EOPNOTSUPP;
14633
14634                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14635                         return -EINVAL;
14636
14637                 conf.bands = bands;
14638                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14639         }
14640
14641         if (!changed)
14642                 return -EINVAL;
14643
14644         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14645 }
14646
14647 void cfg80211_nan_match(struct wireless_dev *wdev,
14648                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14649 {
14650         struct wiphy *wiphy = wdev->wiphy;
14651         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14652         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14653         struct sk_buff *msg;
14654         void *hdr;
14655
14656         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14657                 return;
14658
14659         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14660         if (!msg)
14661                 return;
14662
14663         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14664         if (!hdr) {
14665                 nlmsg_free(msg);
14666                 return;
14667         }
14668
14669         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14670             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14671                                          wdev->netdev->ifindex)) ||
14672             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14673                               NL80211_ATTR_PAD))
14674                 goto nla_put_failure;
14675
14676         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14677                               NL80211_ATTR_PAD) ||
14678             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14679                 goto nla_put_failure;
14680
14681         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14682         if (!match_attr)
14683                 goto nla_put_failure;
14684
14685         local_func_attr = nla_nest_start_noflag(msg,
14686                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14687         if (!local_func_attr)
14688                 goto nla_put_failure;
14689
14690         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14691                 goto nla_put_failure;
14692
14693         nla_nest_end(msg, local_func_attr);
14694
14695         peer_func_attr = nla_nest_start_noflag(msg,
14696                                                NL80211_NAN_MATCH_FUNC_PEER);
14697         if (!peer_func_attr)
14698                 goto nla_put_failure;
14699
14700         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14701             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14702                 goto nla_put_failure;
14703
14704         if (match->info && match->info_len &&
14705             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14706                     match->info))
14707                 goto nla_put_failure;
14708
14709         nla_nest_end(msg, peer_func_attr);
14710         nla_nest_end(msg, match_attr);
14711         genlmsg_end(msg, hdr);
14712
14713         if (!wdev->owner_nlportid)
14714                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14715                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14716         else
14717                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14718                                 wdev->owner_nlportid);
14719
14720         return;
14721
14722 nla_put_failure:
14723         nlmsg_free(msg);
14724 }
14725 EXPORT_SYMBOL(cfg80211_nan_match);
14726
14727 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14728                                   u8 inst_id,
14729                                   enum nl80211_nan_func_term_reason reason,
14730                                   u64 cookie, gfp_t gfp)
14731 {
14732         struct wiphy *wiphy = wdev->wiphy;
14733         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14734         struct sk_buff *msg;
14735         struct nlattr *func_attr;
14736         void *hdr;
14737
14738         if (WARN_ON(!inst_id))
14739                 return;
14740
14741         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14742         if (!msg)
14743                 return;
14744
14745         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14746         if (!hdr) {
14747                 nlmsg_free(msg);
14748                 return;
14749         }
14750
14751         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14752             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14753                                          wdev->netdev->ifindex)) ||
14754             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14755                               NL80211_ATTR_PAD))
14756                 goto nla_put_failure;
14757
14758         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14759                               NL80211_ATTR_PAD))
14760                 goto nla_put_failure;
14761
14762         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14763         if (!func_attr)
14764                 goto nla_put_failure;
14765
14766         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14767             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14768                 goto nla_put_failure;
14769
14770         nla_nest_end(msg, func_attr);
14771         genlmsg_end(msg, hdr);
14772
14773         if (!wdev->owner_nlportid)
14774                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14775                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14776         else
14777                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14778                                 wdev->owner_nlportid);
14779
14780         return;
14781
14782 nla_put_failure:
14783         nlmsg_free(msg);
14784 }
14785 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14786
14787 static int nl80211_get_protocol_features(struct sk_buff *skb,
14788                                          struct genl_info *info)
14789 {
14790         void *hdr;
14791         struct sk_buff *msg;
14792
14793         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14794         if (!msg)
14795                 return -ENOMEM;
14796
14797         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14798                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14799         if (!hdr)
14800                 goto nla_put_failure;
14801
14802         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14803                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14804                 goto nla_put_failure;
14805
14806         genlmsg_end(msg, hdr);
14807         return genlmsg_reply(msg, info);
14808
14809  nla_put_failure:
14810         kfree_skb(msg);
14811         return -ENOBUFS;
14812 }
14813
14814 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14815 {
14816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14817         struct cfg80211_update_ft_ies_params ft_params;
14818         struct net_device *dev = info->user_ptr[1];
14819
14820         if (!rdev->ops->update_ft_ies)
14821                 return -EOPNOTSUPP;
14822
14823         if (!info->attrs[NL80211_ATTR_MDID] ||
14824             !info->attrs[NL80211_ATTR_IE])
14825                 return -EINVAL;
14826
14827         memset(&ft_params, 0, sizeof(ft_params));
14828         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14829         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14830         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14831
14832         return rdev_update_ft_ies(rdev, dev, &ft_params);
14833 }
14834
14835 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14836                                        struct genl_info *info)
14837 {
14838         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14839         struct wireless_dev *wdev = info->user_ptr[1];
14840         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14841         u16 duration;
14842         int ret;
14843
14844         if (!rdev->ops->crit_proto_start)
14845                 return -EOPNOTSUPP;
14846
14847         if (WARN_ON(!rdev->ops->crit_proto_stop))
14848                 return -EINVAL;
14849
14850         if (rdev->crit_proto_nlportid)
14851                 return -EBUSY;
14852
14853         /* determine protocol if provided */
14854         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14855                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14856
14857         if (proto >= NUM_NL80211_CRIT_PROTO)
14858                 return -EINVAL;
14859
14860         /* timeout must be provided */
14861         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14862                 return -EINVAL;
14863
14864         duration =
14865                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14866
14867         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14868         if (!ret)
14869                 rdev->crit_proto_nlportid = info->snd_portid;
14870
14871         return ret;
14872 }
14873
14874 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14875                                       struct genl_info *info)
14876 {
14877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14878         struct wireless_dev *wdev = info->user_ptr[1];
14879
14880         if (!rdev->ops->crit_proto_stop)
14881                 return -EOPNOTSUPP;
14882
14883         if (rdev->crit_proto_nlportid) {
14884                 rdev->crit_proto_nlportid = 0;
14885                 rdev_crit_proto_stop(rdev, wdev);
14886         }
14887         return 0;
14888 }
14889
14890 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14891                                        struct nlattr *attr,
14892                                        struct netlink_ext_ack *extack)
14893 {
14894         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14895                 if (attr->nla_type & NLA_F_NESTED) {
14896                         NL_SET_ERR_MSG_ATTR(extack, attr,
14897                                             "unexpected nested data");
14898                         return -EINVAL;
14899                 }
14900
14901                 return 0;
14902         }
14903
14904         if (!(attr->nla_type & NLA_F_NESTED)) {
14905                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14906                 return -EINVAL;
14907         }
14908
14909         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14910 }
14911
14912 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14913 {
14914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14915         struct wireless_dev *wdev =
14916                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14917                                            info->attrs);
14918         int i, err;
14919         u32 vid, subcmd;
14920
14921         if (!rdev->wiphy.vendor_commands)
14922                 return -EOPNOTSUPP;
14923
14924         if (IS_ERR(wdev)) {
14925                 err = PTR_ERR(wdev);
14926                 if (err != -EINVAL)
14927                         return err;
14928                 wdev = NULL;
14929         } else if (wdev->wiphy != &rdev->wiphy) {
14930                 return -EINVAL;
14931         }
14932
14933         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14934             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14935                 return -EINVAL;
14936
14937         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14938         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14939         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14940                 const struct wiphy_vendor_command *vcmd;
14941                 void *data = NULL;
14942                 int len = 0;
14943
14944                 vcmd = &rdev->wiphy.vendor_commands[i];
14945
14946                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14947                         continue;
14948
14949                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14950                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14951                         if (!wdev)
14952                                 return -EINVAL;
14953                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14954                             !wdev->netdev)
14955                                 return -EINVAL;
14956
14957                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14958                                 if (!wdev_running(wdev))
14959                                         return -ENETDOWN;
14960                         }
14961                 } else {
14962                         wdev = NULL;
14963                 }
14964
14965                 if (!vcmd->doit)
14966                         return -EOPNOTSUPP;
14967
14968                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14969                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14970                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14971
14972                         err = nl80211_vendor_check_policy(vcmd,
14973                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14974                                         info->extack);
14975                         if (err)
14976                                 return err;
14977                 }
14978
14979                 rdev->cur_cmd_info = info;
14980                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14981                 rdev->cur_cmd_info = NULL;
14982                 return err;
14983         }
14984
14985         return -EOPNOTSUPP;
14986 }
14987
14988 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14989                                        struct netlink_callback *cb,
14990                                        struct cfg80211_registered_device **rdev,
14991                                        struct wireless_dev **wdev)
14992 {
14993         struct nlattr **attrbuf;
14994         u32 vid, subcmd;
14995         unsigned int i;
14996         int vcmd_idx = -1;
14997         int err;
14998         void *data = NULL;
14999         unsigned int data_len = 0;
15000
15001         if (cb->args[0]) {
15002                 /* subtract the 1 again here */
15003                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15004                 struct wireless_dev *tmp;
15005
15006                 if (!wiphy)
15007                         return -ENODEV;
15008                 *rdev = wiphy_to_rdev(wiphy);
15009                 *wdev = NULL;
15010
15011                 if (cb->args[1]) {
15012                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15013                                 if (tmp->identifier == cb->args[1] - 1) {
15014                                         *wdev = tmp;
15015                                         break;
15016                                 }
15017                         }
15018                 }
15019
15020                 /* keep rtnl locked in successful case */
15021                 return 0;
15022         }
15023
15024         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15025         if (!attrbuf)
15026                 return -ENOMEM;
15027
15028         err = nlmsg_parse_deprecated(cb->nlh,
15029                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15030                                      attrbuf, nl80211_fam.maxattr,
15031                                      nl80211_policy, NULL);
15032         if (err)
15033                 goto out;
15034
15035         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15036             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15037                 err = -EINVAL;
15038                 goto out;
15039         }
15040
15041         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15042         if (IS_ERR(*wdev))
15043                 *wdev = NULL;
15044
15045         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15046         if (IS_ERR(*rdev)) {
15047                 err = PTR_ERR(*rdev);
15048                 goto out;
15049         }
15050
15051         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15052         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15053
15054         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15055                 const struct wiphy_vendor_command *vcmd;
15056
15057                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15058
15059                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15060                         continue;
15061
15062                 if (!vcmd->dumpit) {
15063                         err = -EOPNOTSUPP;
15064                         goto out;
15065                 }
15066
15067                 vcmd_idx = i;
15068                 break;
15069         }
15070
15071         if (vcmd_idx < 0) {
15072                 err = -EOPNOTSUPP;
15073                 goto out;
15074         }
15075
15076         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15077                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15078                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15079
15080                 err = nl80211_vendor_check_policy(
15081                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15082                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15083                                 cb->extack);
15084                 if (err)
15085                         goto out;
15086         }
15087
15088         /* 0 is the first index - add 1 to parse only once */
15089         cb->args[0] = (*rdev)->wiphy_idx + 1;
15090         /* add 1 to know if it was NULL */
15091         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15092         cb->args[2] = vcmd_idx;
15093         cb->args[3] = (unsigned long)data;
15094         cb->args[4] = data_len;
15095
15096         /* keep rtnl locked in successful case */
15097         err = 0;
15098 out:
15099         kfree(attrbuf);
15100         return err;
15101 }
15102
15103 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15104                                    struct netlink_callback *cb)
15105 {
15106         struct cfg80211_registered_device *rdev;
15107         struct wireless_dev *wdev;
15108         unsigned int vcmd_idx;
15109         const struct wiphy_vendor_command *vcmd;
15110         void *data;
15111         int data_len;
15112         int err;
15113         struct nlattr *vendor_data;
15114
15115         rtnl_lock();
15116         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15117         if (err)
15118                 goto out;
15119
15120         vcmd_idx = cb->args[2];
15121         data = (void *)cb->args[3];
15122         data_len = cb->args[4];
15123         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15124
15125         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15126                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15127                 if (!wdev) {
15128                         err = -EINVAL;
15129                         goto out;
15130                 }
15131                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15132                     !wdev->netdev) {
15133                         err = -EINVAL;
15134                         goto out;
15135                 }
15136
15137                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15138                         if (!wdev_running(wdev)) {
15139                                 err = -ENETDOWN;
15140                                 goto out;
15141                         }
15142                 }
15143         }
15144
15145         while (1) {
15146                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15147                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15148                                            NL80211_CMD_VENDOR);
15149                 if (!hdr)
15150                         break;
15151
15152                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15153                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15154                                                wdev_id(wdev),
15155                                                NL80211_ATTR_PAD))) {
15156                         genlmsg_cancel(skb, hdr);
15157                         break;
15158                 }
15159
15160                 vendor_data = nla_nest_start_noflag(skb,
15161                                                     NL80211_ATTR_VENDOR_DATA);
15162                 if (!vendor_data) {
15163                         genlmsg_cancel(skb, hdr);
15164                         break;
15165                 }
15166
15167                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15168                                    (unsigned long *)&cb->args[5]);
15169                 nla_nest_end(skb, vendor_data);
15170
15171                 if (err == -ENOBUFS || err == -ENOENT) {
15172                         genlmsg_cancel(skb, hdr);
15173                         break;
15174                 } else if (err <= 0) {
15175                         genlmsg_cancel(skb, hdr);
15176                         goto out;
15177                 }
15178
15179                 genlmsg_end(skb, hdr);
15180         }
15181
15182         err = skb->len;
15183  out:
15184         rtnl_unlock();
15185         return err;
15186 }
15187
15188 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15189                                            enum nl80211_commands cmd,
15190                                            enum nl80211_attrs attr,
15191                                            int approxlen)
15192 {
15193         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15194
15195         if (WARN_ON(!rdev->cur_cmd_info))
15196                 return NULL;
15197
15198         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15199                                            rdev->cur_cmd_info->snd_portid,
15200                                            rdev->cur_cmd_info->snd_seq,
15201                                            cmd, attr, NULL, GFP_KERNEL);
15202 }
15203 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15204
15205 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15206 {
15207         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15208         void *hdr = ((void **)skb->cb)[1];
15209         struct nlattr *data = ((void **)skb->cb)[2];
15210
15211         /* clear CB data for netlink core to own from now on */
15212         memset(skb->cb, 0, sizeof(skb->cb));
15213
15214         if (WARN_ON(!rdev->cur_cmd_info)) {
15215                 kfree_skb(skb);
15216                 return -EINVAL;
15217         }
15218
15219         nla_nest_end(skb, data);
15220         genlmsg_end(skb, hdr);
15221         return genlmsg_reply(skb, rdev->cur_cmd_info);
15222 }
15223 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15224
15225 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15226 {
15227         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15228
15229         if (WARN_ON(!rdev->cur_cmd_info))
15230                 return 0;
15231
15232         return rdev->cur_cmd_info->snd_portid;
15233 }
15234 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15235
15236 static int nl80211_set_qos_map(struct sk_buff *skb,
15237                                struct genl_info *info)
15238 {
15239         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15240         struct cfg80211_qos_map *qos_map = NULL;
15241         struct net_device *dev = info->user_ptr[1];
15242         u8 *pos, len, num_des, des_len, des;
15243         int ret;
15244
15245         if (!rdev->ops->set_qos_map)
15246                 return -EOPNOTSUPP;
15247
15248         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15249                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15250                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15251
15252                 if (len % 2)
15253                         return -EINVAL;
15254
15255                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15256                 if (!qos_map)
15257                         return -ENOMEM;
15258
15259                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15260                 if (num_des) {
15261                         des_len = num_des *
15262                                 sizeof(struct cfg80211_dscp_exception);
15263                         memcpy(qos_map->dscp_exception, pos, des_len);
15264                         qos_map->num_des = num_des;
15265                         for (des = 0; des < num_des; des++) {
15266                                 if (qos_map->dscp_exception[des].up > 7) {
15267                                         kfree(qos_map);
15268                                         return -EINVAL;
15269                                 }
15270                         }
15271                         pos += des_len;
15272                 }
15273                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15274         }
15275
15276         wdev_lock(dev->ieee80211_ptr);
15277         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15278         if (!ret)
15279                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15280         wdev_unlock(dev->ieee80211_ptr);
15281
15282         kfree(qos_map);
15283         return ret;
15284 }
15285
15286 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15287 {
15288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15289         struct net_device *dev = info->user_ptr[1];
15290         struct wireless_dev *wdev = dev->ieee80211_ptr;
15291         const u8 *peer;
15292         u8 tsid, up;
15293         u16 admitted_time = 0;
15294         int err;
15295
15296         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15297                 return -EOPNOTSUPP;
15298
15299         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15300             !info->attrs[NL80211_ATTR_USER_PRIO])
15301                 return -EINVAL;
15302
15303         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15304         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15305
15306         /* WMM uses TIDs 0-7 even for TSPEC */
15307         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15308                 /* TODO: handle 802.11 TSPEC/admission control
15309                  * need more attributes for that (e.g. BA session requirement);
15310                  * change the WMM adminssion test above to allow both then
15311                  */
15312                 return -EINVAL;
15313         }
15314
15315         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15316
15317         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15318                 admitted_time =
15319                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15320                 if (!admitted_time)
15321                         return -EINVAL;
15322         }
15323
15324         wdev_lock(wdev);
15325         switch (wdev->iftype) {
15326         case NL80211_IFTYPE_STATION:
15327         case NL80211_IFTYPE_P2P_CLIENT:
15328                 if (wdev->connected)
15329                         break;
15330                 err = -ENOTCONN;
15331                 goto out;
15332         default:
15333                 err = -EOPNOTSUPP;
15334                 goto out;
15335         }
15336
15337         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15338
15339  out:
15340         wdev_unlock(wdev);
15341         return err;
15342 }
15343
15344 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15345 {
15346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15347         struct net_device *dev = info->user_ptr[1];
15348         struct wireless_dev *wdev = dev->ieee80211_ptr;
15349         const u8 *peer;
15350         u8 tsid;
15351         int err;
15352
15353         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15354                 return -EINVAL;
15355
15356         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15357         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15358
15359         wdev_lock(wdev);
15360         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15361         wdev_unlock(wdev);
15362
15363         return err;
15364 }
15365
15366 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15367                                        struct genl_info *info)
15368 {
15369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15370         struct net_device *dev = info->user_ptr[1];
15371         struct wireless_dev *wdev = dev->ieee80211_ptr;
15372         struct cfg80211_chan_def chandef = {};
15373         const u8 *addr;
15374         u8 oper_class;
15375         int err;
15376
15377         if (!rdev->ops->tdls_channel_switch ||
15378             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15379                 return -EOPNOTSUPP;
15380
15381         switch (dev->ieee80211_ptr->iftype) {
15382         case NL80211_IFTYPE_STATION:
15383         case NL80211_IFTYPE_P2P_CLIENT:
15384                 break;
15385         default:
15386                 return -EOPNOTSUPP;
15387         }
15388
15389         if (!info->attrs[NL80211_ATTR_MAC] ||
15390             !info->attrs[NL80211_ATTR_OPER_CLASS])
15391                 return -EINVAL;
15392
15393         err = nl80211_parse_chandef(rdev, info, &chandef);
15394         if (err)
15395                 return err;
15396
15397         /*
15398          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15399          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15400          * specification is not defined for them.
15401          */
15402         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15403             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15404             chandef.width != NL80211_CHAN_WIDTH_20)
15405                 return -EINVAL;
15406
15407         /* we will be active on the TDLS link */
15408         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15409                                            wdev->iftype))
15410                 return -EINVAL;
15411
15412         /* don't allow switching to DFS channels */
15413         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15414                 return -EINVAL;
15415
15416         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15417         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15418
15419         wdev_lock(wdev);
15420         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15421         wdev_unlock(wdev);
15422
15423         return err;
15424 }
15425
15426 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15427                                               struct genl_info *info)
15428 {
15429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15430         struct net_device *dev = info->user_ptr[1];
15431         struct wireless_dev *wdev = dev->ieee80211_ptr;
15432         const u8 *addr;
15433
15434         if (!rdev->ops->tdls_channel_switch ||
15435             !rdev->ops->tdls_cancel_channel_switch ||
15436             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15437                 return -EOPNOTSUPP;
15438
15439         switch (dev->ieee80211_ptr->iftype) {
15440         case NL80211_IFTYPE_STATION:
15441         case NL80211_IFTYPE_P2P_CLIENT:
15442                 break;
15443         default:
15444                 return -EOPNOTSUPP;
15445         }
15446
15447         if (!info->attrs[NL80211_ATTR_MAC])
15448                 return -EINVAL;
15449
15450         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15451
15452         wdev_lock(wdev);
15453         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15454         wdev_unlock(wdev);
15455
15456         return 0;
15457 }
15458
15459 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15460                                             struct genl_info *info)
15461 {
15462         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15463         struct net_device *dev = info->user_ptr[1];
15464         struct wireless_dev *wdev = dev->ieee80211_ptr;
15465         const struct nlattr *nla;
15466         bool enabled;
15467
15468         if (!rdev->ops->set_multicast_to_unicast)
15469                 return -EOPNOTSUPP;
15470
15471         if (wdev->iftype != NL80211_IFTYPE_AP &&
15472             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15473                 return -EOPNOTSUPP;
15474
15475         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15476         enabled = nla_get_flag(nla);
15477
15478         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15479 }
15480
15481 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15482 {
15483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15484         struct net_device *dev = info->user_ptr[1];
15485         struct wireless_dev *wdev = dev->ieee80211_ptr;
15486         struct cfg80211_pmk_conf pmk_conf = {};
15487         int ret;
15488
15489         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15490             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15491                 return -EOPNOTSUPP;
15492
15493         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15494                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15495                 return -EOPNOTSUPP;
15496
15497         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15498                 return -EINVAL;
15499
15500         wdev_lock(wdev);
15501         if (!wdev->connected) {
15502                 ret = -ENOTCONN;
15503                 goto out;
15504         }
15505
15506         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15507         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15508                 ret = -EINVAL;
15509                 goto out;
15510         }
15511
15512         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15513         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15514         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15515             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15516                 ret = -EINVAL;
15517                 goto out;
15518         }
15519
15520         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15521                 pmk_conf.pmk_r0_name =
15522                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15523
15524         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15525 out:
15526         wdev_unlock(wdev);
15527         return ret;
15528 }
15529
15530 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15531 {
15532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15533         struct net_device *dev = info->user_ptr[1];
15534         struct wireless_dev *wdev = dev->ieee80211_ptr;
15535         const u8 *aa;
15536         int ret;
15537
15538         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15539             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15540                 return -EOPNOTSUPP;
15541
15542         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15543                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15544                 return -EOPNOTSUPP;
15545
15546         if (!info->attrs[NL80211_ATTR_MAC])
15547                 return -EINVAL;
15548
15549         wdev_lock(wdev);
15550         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15551         ret = rdev_del_pmk(rdev, dev, aa);
15552         wdev_unlock(wdev);
15553
15554         return ret;
15555 }
15556
15557 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15558 {
15559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15560         struct net_device *dev = info->user_ptr[1];
15561         struct cfg80211_external_auth_params params;
15562
15563         if (!rdev->ops->external_auth)
15564                 return -EOPNOTSUPP;
15565
15566         if (!info->attrs[NL80211_ATTR_SSID] &&
15567             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15568             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15569                 return -EINVAL;
15570
15571         if (!info->attrs[NL80211_ATTR_BSSID])
15572                 return -EINVAL;
15573
15574         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15575                 return -EINVAL;
15576
15577         memset(&params, 0, sizeof(params));
15578
15579         if (info->attrs[NL80211_ATTR_SSID]) {
15580                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15581                 if (params.ssid.ssid_len == 0)
15582                         return -EINVAL;
15583                 memcpy(params.ssid.ssid,
15584                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15585                        params.ssid.ssid_len);
15586         }
15587
15588         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15589                ETH_ALEN);
15590
15591         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15592
15593         if (info->attrs[NL80211_ATTR_PMKID])
15594                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15595
15596         return rdev_external_auth(rdev, dev, &params);
15597 }
15598
15599 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15600 {
15601         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15603         struct net_device *dev = info->user_ptr[1];
15604         struct wireless_dev *wdev = dev->ieee80211_ptr;
15605         const u8 *buf;
15606         size_t len;
15607         u8 *dest;
15608         u16 proto;
15609         bool noencrypt;
15610         u64 cookie = 0;
15611         int link_id;
15612         int err;
15613
15614         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15615                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15616                 return -EOPNOTSUPP;
15617
15618         if (!rdev->ops->tx_control_port)
15619                 return -EOPNOTSUPP;
15620
15621         if (!info->attrs[NL80211_ATTR_FRAME] ||
15622             !info->attrs[NL80211_ATTR_MAC] ||
15623             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15624                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15625                 return -EINVAL;
15626         }
15627
15628         wdev_lock(wdev);
15629
15630         switch (wdev->iftype) {
15631         case NL80211_IFTYPE_AP:
15632         case NL80211_IFTYPE_P2P_GO:
15633         case NL80211_IFTYPE_MESH_POINT:
15634                 break;
15635         case NL80211_IFTYPE_ADHOC:
15636                 if (wdev->u.ibss.current_bss)
15637                         break;
15638                 err = -ENOTCONN;
15639                 goto out;
15640         case NL80211_IFTYPE_STATION:
15641         case NL80211_IFTYPE_P2P_CLIENT:
15642                 if (wdev->connected)
15643                         break;
15644                 err = -ENOTCONN;
15645                 goto out;
15646         default:
15647                 err = -EOPNOTSUPP;
15648                 goto out;
15649         }
15650
15651         wdev_unlock(wdev);
15652
15653         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15654         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15655         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15656         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15657         noencrypt =
15658                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15659
15660         link_id = nl80211_link_id_or_invalid(info->attrs);
15661
15662         err = rdev_tx_control_port(rdev, dev, buf, len,
15663                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15664                                    dont_wait_for_ack ? NULL : &cookie);
15665         if (!err && !dont_wait_for_ack)
15666                 nl_set_extack_cookie_u64(info->extack, cookie);
15667         return err;
15668  out:
15669         wdev_unlock(wdev);
15670         return err;
15671 }
15672
15673 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15674                                            struct genl_info *info)
15675 {
15676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15677         struct net_device *dev = info->user_ptr[1];
15678         struct wireless_dev *wdev = dev->ieee80211_ptr;
15679         struct cfg80211_ftm_responder_stats ftm_stats = {};
15680         unsigned int link_id = nl80211_link_id(info->attrs);
15681         struct sk_buff *msg;
15682         void *hdr;
15683         struct nlattr *ftm_stats_attr;
15684         int err;
15685
15686         if (wdev->iftype != NL80211_IFTYPE_AP ||
15687             !wdev->links[link_id].ap.beacon_interval)
15688                 return -EOPNOTSUPP;
15689
15690         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15691         if (err)
15692                 return err;
15693
15694         if (!ftm_stats.filled)
15695                 return -ENODATA;
15696
15697         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15698         if (!msg)
15699                 return -ENOMEM;
15700
15701         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15702                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15703         if (!hdr)
15704                 goto nla_put_failure;
15705
15706         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15707                 goto nla_put_failure;
15708
15709         ftm_stats_attr = nla_nest_start_noflag(msg,
15710                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15711         if (!ftm_stats_attr)
15712                 goto nla_put_failure;
15713
15714 #define SET_FTM(field, name, type)                                       \
15715         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15716             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15717                              ftm_stats.field))                           \
15718                 goto nla_put_failure; } while (0)
15719 #define SET_FTM_U64(field, name)                                         \
15720         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15721             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15722                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15723                 goto nla_put_failure; } while (0)
15724
15725         SET_FTM(success_num, SUCCESS_NUM, u32);
15726         SET_FTM(partial_num, PARTIAL_NUM, u32);
15727         SET_FTM(failed_num, FAILED_NUM, u32);
15728         SET_FTM(asap_num, ASAP_NUM, u32);
15729         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15730         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15731         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15732         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15733         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15734 #undef SET_FTM
15735
15736         nla_nest_end(msg, ftm_stats_attr);
15737
15738         genlmsg_end(msg, hdr);
15739         return genlmsg_reply(msg, info);
15740
15741 nla_put_failure:
15742         nlmsg_free(msg);
15743         return -ENOBUFS;
15744 }
15745
15746 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15747 {
15748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15749         struct cfg80211_update_owe_info owe_info;
15750         struct net_device *dev = info->user_ptr[1];
15751
15752         if (!rdev->ops->update_owe_info)
15753                 return -EOPNOTSUPP;
15754
15755         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15756             !info->attrs[NL80211_ATTR_MAC])
15757                 return -EINVAL;
15758
15759         memset(&owe_info, 0, sizeof(owe_info));
15760         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15761         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15762
15763         if (info->attrs[NL80211_ATTR_IE]) {
15764                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15765                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15766         }
15767
15768         return rdev_update_owe_info(rdev, dev, &owe_info);
15769 }
15770
15771 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15772 {
15773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15774         struct net_device *dev = info->user_ptr[1];
15775         struct wireless_dev *wdev = dev->ieee80211_ptr;
15776         struct station_info sinfo = {};
15777         const u8 *buf;
15778         size_t len;
15779         u8 *dest;
15780         int err;
15781
15782         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15783                 return -EOPNOTSUPP;
15784
15785         if (!info->attrs[NL80211_ATTR_MAC] ||
15786             !info->attrs[NL80211_ATTR_FRAME]) {
15787                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15788                 return -EINVAL;
15789         }
15790
15791         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15792                 return -EOPNOTSUPP;
15793
15794         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15795         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15796         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15797
15798         if (len < sizeof(struct ethhdr))
15799                 return -EINVAL;
15800
15801         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15802             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15803                 return -EINVAL;
15804
15805         err = rdev_get_station(rdev, dev, dest, &sinfo);
15806         if (err)
15807                 return err;
15808
15809         cfg80211_sinfo_release_content(&sinfo);
15810
15811         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15812 }
15813
15814 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15815                           struct nlattr *attrs[], struct net_device *dev,
15816                           struct cfg80211_tid_cfg *tid_conf,
15817                           struct genl_info *info, const u8 *peer,
15818                           unsigned int link_id)
15819 {
15820         struct netlink_ext_ack *extack = info->extack;
15821         u64 mask;
15822         int err;
15823
15824         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15825                 return -EINVAL;
15826
15827         tid_conf->config_override =
15828                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15829         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15830
15831         if (tid_conf->config_override) {
15832                 if (rdev->ops->reset_tid_config) {
15833                         err = rdev_reset_tid_config(rdev, dev, peer,
15834                                                     tid_conf->tids);
15835                         if (err)
15836                                 return err;
15837                 } else {
15838                         return -EINVAL;
15839                 }
15840         }
15841
15842         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15843                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15844                 tid_conf->noack =
15845                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15846         }
15847
15848         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15849                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15850                 tid_conf->retry_short =
15851                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15852
15853                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15854                         return -EINVAL;
15855         }
15856
15857         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15858                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15859                 tid_conf->retry_long =
15860                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15861
15862                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15863                         return -EINVAL;
15864         }
15865
15866         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15867                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15868                 tid_conf->ampdu =
15869                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15870         }
15871
15872         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15873                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15874                 tid_conf->rtscts =
15875                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15876         }
15877
15878         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15879                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15880                 tid_conf->amsdu =
15881                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15882         }
15883
15884         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15885                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15886
15887                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15888
15889                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15890                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15891                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15892                                                     &tid_conf->txrate_mask, dev,
15893                                                     true, link_id);
15894                         if (err)
15895                                 return err;
15896
15897                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15898                 }
15899                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15900         }
15901
15902         if (peer)
15903                 mask = rdev->wiphy.tid_config_support.peer;
15904         else
15905                 mask = rdev->wiphy.tid_config_support.vif;
15906
15907         if (tid_conf->mask & ~mask) {
15908                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15909                 return -ENOTSUPP;
15910         }
15911
15912         return 0;
15913 }
15914
15915 static int nl80211_set_tid_config(struct sk_buff *skb,
15916                                   struct genl_info *info)
15917 {
15918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15919         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15920         unsigned int link_id = nl80211_link_id(info->attrs);
15921         struct net_device *dev = info->user_ptr[1];
15922         struct cfg80211_tid_config *tid_config;
15923         struct nlattr *tid;
15924         int conf_idx = 0, rem_conf;
15925         int ret = -EINVAL;
15926         u32 num_conf = 0;
15927
15928         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15929                 return -EINVAL;
15930
15931         if (!rdev->ops->set_tid_config)
15932                 return -EOPNOTSUPP;
15933
15934         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15935                             rem_conf)
15936                 num_conf++;
15937
15938         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15939                              GFP_KERNEL);
15940         if (!tid_config)
15941                 return -ENOMEM;
15942
15943         tid_config->n_tid_conf = num_conf;
15944
15945         if (info->attrs[NL80211_ATTR_MAC])
15946                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15947
15948         wdev_lock(dev->ieee80211_ptr);
15949
15950         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15951                             rem_conf) {
15952                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15953                                        tid, NULL, NULL);
15954
15955                 if (ret)
15956                         goto bad_tid_conf;
15957
15958                 ret = parse_tid_conf(rdev, attrs, dev,
15959                                      &tid_config->tid_conf[conf_idx],
15960                                      info, tid_config->peer, link_id);
15961                 if (ret)
15962                         goto bad_tid_conf;
15963
15964                 conf_idx++;
15965         }
15966
15967         ret = rdev_set_tid_config(rdev, dev, tid_config);
15968
15969 bad_tid_conf:
15970         kfree(tid_config);
15971         wdev_unlock(dev->ieee80211_ptr);
15972         return ret;
15973 }
15974
15975 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15976 {
15977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15978         struct cfg80211_color_change_settings params = {};
15979         struct net_device *dev = info->user_ptr[1];
15980         struct wireless_dev *wdev = dev->ieee80211_ptr;
15981         struct nlattr **tb;
15982         u16 offset;
15983         int err;
15984
15985         if (!rdev->ops->color_change)
15986                 return -EOPNOTSUPP;
15987
15988         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15989                                      NL80211_EXT_FEATURE_BSS_COLOR))
15990                 return -EOPNOTSUPP;
15991
15992         if (wdev->iftype != NL80211_IFTYPE_AP)
15993                 return -EOPNOTSUPP;
15994
15995         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15996             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15997             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15998                 return -EINVAL;
15999
16000         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16001         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16002
16003         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
16004                                    info->extack);
16005         if (err)
16006                 return err;
16007
16008         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16009         if (!tb)
16010                 return -ENOMEM;
16011
16012         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16013                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16014                                nl80211_policy, info->extack);
16015         if (err)
16016                 goto out;
16017
16018         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
16019                                    info->extack);
16020         if (err)
16021                 goto out;
16022
16023         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16024                 err = -EINVAL;
16025                 goto out;
16026         }
16027
16028         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16029                 err = -EINVAL;
16030                 goto out;
16031         }
16032
16033         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16034         if (offset >= params.beacon_color_change.tail_len) {
16035                 err = -EINVAL;
16036                 goto out;
16037         }
16038
16039         if (params.beacon_color_change.tail[offset] != params.count) {
16040                 err = -EINVAL;
16041                 goto out;
16042         }
16043
16044         params.counter_offset_beacon = offset;
16045
16046         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16047                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16048                     sizeof(u16)) {
16049                         err = -EINVAL;
16050                         goto out;
16051                 }
16052
16053                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16054                 if (offset >= params.beacon_color_change.probe_resp_len) {
16055                         err = -EINVAL;
16056                         goto out;
16057                 }
16058
16059                 if (params.beacon_color_change.probe_resp[offset] !=
16060                     params.count) {
16061                         err = -EINVAL;
16062                         goto out;
16063                 }
16064
16065                 params.counter_offset_presp = offset;
16066         }
16067
16068         wdev_lock(wdev);
16069         err = rdev_color_change(rdev, dev, &params);
16070         wdev_unlock(wdev);
16071
16072 out:
16073         kfree(params.beacon_next.mbssid_ies);
16074         kfree(params.beacon_color_change.mbssid_ies);
16075         kfree(params.beacon_next.rnr_ies);
16076         kfree(params.beacon_color_change.rnr_ies);
16077         kfree(tb);
16078         return err;
16079 }
16080
16081 static int nl80211_set_fils_aad(struct sk_buff *skb,
16082                                 struct genl_info *info)
16083 {
16084         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16085         struct net_device *dev = info->user_ptr[1];
16086         struct cfg80211_fils_aad fils_aad = {};
16087         u8 *nonces;
16088
16089         if (!info->attrs[NL80211_ATTR_MAC] ||
16090             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16091             !info->attrs[NL80211_ATTR_FILS_NONCES])
16092                 return -EINVAL;
16093
16094         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16095         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16096         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16097         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16098         fils_aad.snonce = nonces;
16099         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16100
16101         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16102 }
16103
16104 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16105 {
16106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16107         unsigned int link_id = nl80211_link_id(info->attrs);
16108         struct net_device *dev = info->user_ptr[1];
16109         struct wireless_dev *wdev = dev->ieee80211_ptr;
16110         int ret;
16111
16112         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16113                 return -EINVAL;
16114
16115         switch (wdev->iftype) {
16116         case NL80211_IFTYPE_AP:
16117                 break;
16118         default:
16119                 return -EINVAL;
16120         }
16121
16122         if (!info->attrs[NL80211_ATTR_MAC] ||
16123             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16124                 return -EINVAL;
16125
16126         wdev_lock(wdev);
16127         wdev->valid_links |= BIT(link_id);
16128         ether_addr_copy(wdev->links[link_id].addr,
16129                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16130
16131         ret = rdev_add_intf_link(rdev, wdev, link_id);
16132         if (ret) {
16133                 wdev->valid_links &= ~BIT(link_id);
16134                 eth_zero_addr(wdev->links[link_id].addr);
16135         }
16136         wdev_unlock(wdev);
16137
16138         return ret;
16139 }
16140
16141 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16142 {
16143         unsigned int link_id = nl80211_link_id(info->attrs);
16144         struct net_device *dev = info->user_ptr[1];
16145         struct wireless_dev *wdev = dev->ieee80211_ptr;
16146
16147         /* cannot remove if there's no link */
16148         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16149                 return -EINVAL;
16150
16151         switch (wdev->iftype) {
16152         case NL80211_IFTYPE_AP:
16153                 break;
16154         default:
16155                 return -EINVAL;
16156         }
16157
16158         wdev_lock(wdev);
16159         cfg80211_remove_link(wdev, link_id);
16160         wdev_unlock(wdev);
16161
16162         return 0;
16163 }
16164
16165 static int
16166 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16167                              bool add)
16168 {
16169         struct link_station_parameters params = {};
16170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16171         struct net_device *dev = info->user_ptr[1];
16172         int err;
16173
16174         if ((add && !rdev->ops->add_link_station) ||
16175             (!add && !rdev->ops->mod_link_station))
16176                 return -EOPNOTSUPP;
16177
16178         if (add && !info->attrs[NL80211_ATTR_MAC])
16179                 return -EINVAL;
16180
16181         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16182                 return -EINVAL;
16183
16184         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16185                 return -EINVAL;
16186
16187         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16188
16189         if (info->attrs[NL80211_ATTR_MAC]) {
16190                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16191                 if (!is_valid_ether_addr(params.link_mac))
16192                         return -EINVAL;
16193         }
16194
16195         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16196                 return -EINVAL;
16197
16198         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16199
16200         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16201                 params.supported_rates =
16202                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16203                 params.supported_rates_len =
16204                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16205         }
16206
16207         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16208                 params.ht_capa =
16209                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16210
16211         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16212                 params.vht_capa =
16213                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16214
16215         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16216                 params.he_capa =
16217                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16218                 params.he_capa_len =
16219                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16220
16221                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16222                         params.eht_capa =
16223                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16224                         params.eht_capa_len =
16225                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16226
16227                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16228                                                         (const u8 *)params.eht_capa,
16229                                                         params.eht_capa_len,
16230                                                         false))
16231                                 return -EINVAL;
16232                 }
16233         }
16234
16235         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16236                 params.he_6ghz_capa =
16237                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16238
16239         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16240                 params.opmode_notif_used = true;
16241                 params.opmode_notif =
16242                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16243         }
16244
16245         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16246                                                 &params.txpwr_set);
16247         if (err)
16248                 return err;
16249
16250         wdev_lock(dev->ieee80211_ptr);
16251         if (add)
16252                 err = rdev_add_link_station(rdev, dev, &params);
16253         else
16254                 err = rdev_mod_link_station(rdev, dev, &params);
16255         wdev_unlock(dev->ieee80211_ptr);
16256
16257         return err;
16258 }
16259
16260 static int
16261 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16262 {
16263         return nl80211_add_mod_link_station(skb, info, true);
16264 }
16265
16266 static int
16267 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16268 {
16269         return nl80211_add_mod_link_station(skb, info, false);
16270 }
16271
16272 static int
16273 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16274 {
16275         struct link_station_del_parameters params = {};
16276         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16277         struct net_device *dev = info->user_ptr[1];
16278         int ret;
16279
16280         if (!rdev->ops->del_link_station)
16281                 return -EOPNOTSUPP;
16282
16283         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16284             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16285                 return -EINVAL;
16286
16287         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16288         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16289
16290         wdev_lock(dev->ieee80211_ptr);
16291         ret = rdev_del_link_station(rdev, dev, &params);
16292         wdev_unlock(dev->ieee80211_ptr);
16293
16294         return ret;
16295 }
16296
16297 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16298                                     struct genl_info *info)
16299 {
16300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16301         struct net_device *dev = info->user_ptr[1];
16302         struct cfg80211_set_hw_timestamp hwts = {};
16303
16304         if (!rdev->wiphy.hw_timestamp_max_peers)
16305                 return -EOPNOTSUPP;
16306
16307         if (!info->attrs[NL80211_ATTR_MAC] &&
16308             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16309                 return -EOPNOTSUPP;
16310
16311         if (info->attrs[NL80211_ATTR_MAC])
16312                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16313
16314         hwts.enable =
16315                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16316
16317         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16318 }
16319
16320 #define NL80211_FLAG_NEED_WIPHY         0x01
16321 #define NL80211_FLAG_NEED_NETDEV        0x02
16322 #define NL80211_FLAG_NEED_RTNL          0x04
16323 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16324 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16325                                          NL80211_FLAG_CHECK_NETDEV_UP)
16326 #define NL80211_FLAG_NEED_WDEV          0x10
16327 /* If a netdev is associated, it must be UP, P2P must be started */
16328 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16329                                          NL80211_FLAG_CHECK_NETDEV_UP)
16330 #define NL80211_FLAG_CLEAR_SKB          0x20
16331 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16332 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16333 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16334
16335 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16336         SELECTOR(__sel, NONE, 0) /* must be first */    \
16337         SELECTOR(__sel, WIPHY,                          \
16338                  NL80211_FLAG_NEED_WIPHY)               \
16339         SELECTOR(__sel, WDEV,                           \
16340                  NL80211_FLAG_NEED_WDEV)                \
16341         SELECTOR(__sel, NETDEV,                         \
16342                  NL80211_FLAG_NEED_NETDEV)              \
16343         SELECTOR(__sel, NETDEV_LINK,                    \
16344                  NL80211_FLAG_NEED_NETDEV |             \
16345                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16346         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16347                  NL80211_FLAG_NEED_NETDEV |             \
16348                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16349         SELECTOR(__sel, WIPHY_RTNL,                     \
16350                  NL80211_FLAG_NEED_WIPHY |              \
16351                  NL80211_FLAG_NEED_RTNL)                \
16352         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16353                  NL80211_FLAG_NEED_WIPHY |              \
16354                  NL80211_FLAG_NEED_RTNL |               \
16355                  NL80211_FLAG_NO_WIPHY_MTX)             \
16356         SELECTOR(__sel, WDEV_RTNL,                      \
16357                  NL80211_FLAG_NEED_WDEV |               \
16358                  NL80211_FLAG_NEED_RTNL)                \
16359         SELECTOR(__sel, NETDEV_RTNL,                    \
16360                  NL80211_FLAG_NEED_NETDEV |             \
16361                  NL80211_FLAG_NEED_RTNL)                \
16362         SELECTOR(__sel, NETDEV_UP,                      \
16363                  NL80211_FLAG_NEED_NETDEV_UP)           \
16364         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16365                  NL80211_FLAG_NEED_NETDEV_UP |          \
16366                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16367         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16368                  NL80211_FLAG_NEED_NETDEV_UP |          \
16369                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16370         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16371                  NL80211_FLAG_NEED_NETDEV_UP |          \
16372                  NL80211_FLAG_CLEAR_SKB |               \
16373                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16374         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16375                  NL80211_FLAG_NEED_NETDEV_UP |          \
16376                  NL80211_FLAG_NO_WIPHY_MTX)             \
16377         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16378                  NL80211_FLAG_NEED_NETDEV_UP |          \
16379                  NL80211_FLAG_NO_WIPHY_MTX |            \
16380                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16381         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16382                  NL80211_FLAG_NEED_NETDEV_UP |          \
16383                  NL80211_FLAG_CLEAR_SKB)                \
16384         SELECTOR(__sel, WDEV_UP,                        \
16385                  NL80211_FLAG_NEED_WDEV_UP)             \
16386         SELECTOR(__sel, WDEV_UP_LINK,                   \
16387                  NL80211_FLAG_NEED_WDEV_UP |            \
16388                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16389         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16390                  NL80211_FLAG_NEED_WDEV_UP |            \
16391                  NL80211_FLAG_NEED_RTNL)                \
16392         SELECTOR(__sel, WIPHY_CLEAR,                    \
16393                  NL80211_FLAG_NEED_WIPHY |              \
16394                  NL80211_FLAG_CLEAR_SKB)
16395
16396 enum nl80211_internal_flags_selector {
16397 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16398         INTERNAL_FLAG_SELECTORS(_)
16399 #undef SELECTOR
16400 };
16401
16402 static u32 nl80211_internal_flags[] = {
16403 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16404         INTERNAL_FLAG_SELECTORS(_)
16405 #undef SELECTOR
16406 };
16407
16408 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16409                             struct sk_buff *skb,
16410                             struct genl_info *info)
16411 {
16412         struct cfg80211_registered_device *rdev = NULL;
16413         struct wireless_dev *wdev = NULL;
16414         struct net_device *dev = NULL;
16415         u32 internal_flags;
16416         int err;
16417
16418         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16419                 return -EINVAL;
16420
16421         internal_flags = nl80211_internal_flags[ops->internal_flags];
16422
16423         rtnl_lock();
16424         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16425                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16426                 if (IS_ERR(rdev)) {
16427                         err = PTR_ERR(rdev);
16428                         goto out_unlock;
16429                 }
16430                 info->user_ptr[0] = rdev;
16431         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16432                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16433                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16434                                                   info->attrs);
16435                 if (IS_ERR(wdev)) {
16436                         err = PTR_ERR(wdev);
16437                         goto out_unlock;
16438                 }
16439
16440                 dev = wdev->netdev;
16441                 dev_hold(dev);
16442                 rdev = wiphy_to_rdev(wdev->wiphy);
16443
16444                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16445                         if (!dev) {
16446                                 err = -EINVAL;
16447                                 goto out_unlock;
16448                         }
16449
16450                         info->user_ptr[1] = dev;
16451                 } else {
16452                         info->user_ptr[1] = wdev;
16453                 }
16454
16455                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16456                     !wdev_running(wdev)) {
16457                         err = -ENETDOWN;
16458                         goto out_unlock;
16459                 }
16460
16461                 info->user_ptr[0] = rdev;
16462         }
16463
16464         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16465                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16466
16467                 if (!wdev) {
16468                         err = -EINVAL;
16469                         goto out_unlock;
16470                 }
16471
16472                 /* MLO -> require valid link ID */
16473                 if (wdev->valid_links &&
16474                     (!link_id ||
16475                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16476                         err = -EINVAL;
16477                         goto out_unlock;
16478                 }
16479
16480                 /* non-MLO -> no link ID attribute accepted */
16481                 if (!wdev->valid_links && link_id) {
16482                         err = -EINVAL;
16483                         goto out_unlock;
16484                 }
16485         }
16486
16487         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16488                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16489                     (wdev && wdev->valid_links)) {
16490                         err = -EINVAL;
16491                         goto out_unlock;
16492                 }
16493         }
16494
16495         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16496                 wiphy_lock(&rdev->wiphy);
16497                 /* we keep the mutex locked until post_doit */
16498                 __release(&rdev->wiphy.mtx);
16499         }
16500         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16501                 rtnl_unlock();
16502
16503         return 0;
16504 out_unlock:
16505         rtnl_unlock();
16506         dev_put(dev);
16507         return err;
16508 }
16509
16510 static void nl80211_post_doit(const struct genl_split_ops *ops,
16511                               struct sk_buff *skb,
16512                               struct genl_info *info)
16513 {
16514         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16515
16516         if (info->user_ptr[1]) {
16517                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16518                         struct wireless_dev *wdev = info->user_ptr[1];
16519
16520                         dev_put(wdev->netdev);
16521                 } else {
16522                         dev_put(info->user_ptr[1]);
16523                 }
16524         }
16525
16526         if (info->user_ptr[0] &&
16527             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16528                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16529
16530                 /* we kept the mutex locked since pre_doit */
16531                 __acquire(&rdev->wiphy.mtx);
16532                 wiphy_unlock(&rdev->wiphy);
16533         }
16534
16535         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16536                 rtnl_unlock();
16537
16538         /* If needed, clear the netlink message payload from the SKB
16539          * as it might contain key data that shouldn't stick around on
16540          * the heap after the SKB is freed. The netlink message header
16541          * is still needed for further processing, so leave it intact.
16542          */
16543         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16544                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16545
16546                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16547         }
16548 }
16549
16550 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16551                                      struct cfg80211_sar_specs *sar_specs,
16552                                      struct nlattr *spec[], int index)
16553 {
16554         u32 range_index, i;
16555
16556         if (!sar_specs || !spec)
16557                 return -EINVAL;
16558
16559         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16560             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16561                 return -EINVAL;
16562
16563         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16564
16565         /* check if range_index exceeds num_freq_ranges */
16566         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16567                 return -EINVAL;
16568
16569         /* check if range_index duplicates */
16570         for (i = 0; i < index; i++) {
16571                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16572                         return -EINVAL;
16573         }
16574
16575         sar_specs->sub_specs[index].power =
16576                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16577
16578         sar_specs->sub_specs[index].freq_range_index = range_index;
16579
16580         return 0;
16581 }
16582
16583 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16584 {
16585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16586         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16587         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16588         struct cfg80211_sar_specs *sar_spec;
16589         enum nl80211_sar_type type;
16590         struct nlattr *spec_list;
16591         u32 specs;
16592         int rem, err;
16593
16594         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16595                 return -EOPNOTSUPP;
16596
16597         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16598                 return -EINVAL;
16599
16600         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16601                          info->attrs[NL80211_ATTR_SAR_SPEC],
16602                          NULL, NULL);
16603
16604         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16605                 return -EINVAL;
16606
16607         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16608         if (type != rdev->wiphy.sar_capa->type)
16609                 return -EINVAL;
16610
16611         specs = 0;
16612         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16613                 specs++;
16614
16615         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16616                 return -EINVAL;
16617
16618         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16619         if (!sar_spec)
16620                 return -ENOMEM;
16621
16622         sar_spec->type = type;
16623         specs = 0;
16624         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16625                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16626                                  spec_list, NULL, NULL);
16627
16628                 switch (type) {
16629                 case NL80211_SAR_TYPE_POWER:
16630                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16631                                                       spec, specs)) {
16632                                 err = -EINVAL;
16633                                 goto error;
16634                         }
16635                         break;
16636                 default:
16637                         err = -EINVAL;
16638                         goto error;
16639                 }
16640                 specs++;
16641         }
16642
16643         sar_spec->num_sub_specs = specs;
16644
16645         rdev->cur_cmd_info = info;
16646         err = rdev_set_sar_specs(rdev, sar_spec);
16647         rdev->cur_cmd_info = NULL;
16648 error:
16649         kfree(sar_spec);
16650         return err;
16651 }
16652
16653 #define SELECTOR(__sel, name, value) \
16654         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16655 int __missing_selector(void);
16656 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16657
16658 static const struct genl_ops nl80211_ops[] = {
16659         {
16660                 .cmd = NL80211_CMD_GET_WIPHY,
16661                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16662                 .doit = nl80211_get_wiphy,
16663                 .dumpit = nl80211_dump_wiphy,
16664                 .done = nl80211_dump_wiphy_done,
16665                 /* can be retrieved by unprivileged users */
16666                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16667         },
16668 };
16669
16670 static const struct genl_small_ops nl80211_small_ops[] = {
16671         {
16672                 .cmd = NL80211_CMD_SET_WIPHY,
16673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16674                 .doit = nl80211_set_wiphy,
16675                 .flags = GENL_UNS_ADMIN_PERM,
16676         },
16677         {
16678                 .cmd = NL80211_CMD_GET_INTERFACE,
16679                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16680                 .doit = nl80211_get_interface,
16681                 .dumpit = nl80211_dump_interface,
16682                 /* can be retrieved by unprivileged users */
16683                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16684         },
16685         {
16686                 .cmd = NL80211_CMD_SET_INTERFACE,
16687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16688                 .doit = nl80211_set_interface,
16689                 .flags = GENL_UNS_ADMIN_PERM,
16690                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16691                                          NL80211_FLAG_NEED_RTNL),
16692         },
16693         {
16694                 .cmd = NL80211_CMD_NEW_INTERFACE,
16695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16696                 .doit = nl80211_new_interface,
16697                 .flags = GENL_UNS_ADMIN_PERM,
16698                 .internal_flags =
16699                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16700                                NL80211_FLAG_NEED_RTNL |
16701                                /* we take the wiphy mutex later ourselves */
16702                                NL80211_FLAG_NO_WIPHY_MTX),
16703         },
16704         {
16705                 .cmd = NL80211_CMD_DEL_INTERFACE,
16706                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16707                 .doit = nl80211_del_interface,
16708                 .flags = GENL_UNS_ADMIN_PERM,
16709                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16710                                          NL80211_FLAG_NEED_RTNL),
16711         },
16712         {
16713                 .cmd = NL80211_CMD_GET_KEY,
16714                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16715                 .doit = nl80211_get_key,
16716                 .flags = GENL_UNS_ADMIN_PERM,
16717                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16718         },
16719         {
16720                 .cmd = NL80211_CMD_SET_KEY,
16721                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16722                 .doit = nl80211_set_key,
16723                 .flags = GENL_UNS_ADMIN_PERM,
16724                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16725                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16726                                          NL80211_FLAG_CLEAR_SKB),
16727         },
16728         {
16729                 .cmd = NL80211_CMD_NEW_KEY,
16730                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16731                 .doit = nl80211_new_key,
16732                 .flags = GENL_UNS_ADMIN_PERM,
16733                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16734                                          NL80211_FLAG_CLEAR_SKB),
16735         },
16736         {
16737                 .cmd = NL80211_CMD_DEL_KEY,
16738                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16739                 .doit = nl80211_del_key,
16740                 .flags = GENL_UNS_ADMIN_PERM,
16741                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16742         },
16743         {
16744                 .cmd = NL80211_CMD_SET_BEACON,
16745                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16746                 .flags = GENL_UNS_ADMIN_PERM,
16747                 .doit = nl80211_set_beacon,
16748                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16749                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16750         },
16751         {
16752                 .cmd = NL80211_CMD_START_AP,
16753                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16754                 .flags = GENL_UNS_ADMIN_PERM,
16755                 .doit = nl80211_start_ap,
16756                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16757                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16758         },
16759         {
16760                 .cmd = NL80211_CMD_STOP_AP,
16761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16762                 .flags = GENL_UNS_ADMIN_PERM,
16763                 .doit = nl80211_stop_ap,
16764                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16765                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16766         },
16767         {
16768                 .cmd = NL80211_CMD_GET_STATION,
16769                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16770                 .doit = nl80211_get_station,
16771                 .dumpit = nl80211_dump_station,
16772                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16773         },
16774         {
16775                 .cmd = NL80211_CMD_SET_STATION,
16776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16777                 .doit = nl80211_set_station,
16778                 .flags = GENL_UNS_ADMIN_PERM,
16779                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16780         },
16781         {
16782                 .cmd = NL80211_CMD_NEW_STATION,
16783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16784                 .doit = nl80211_new_station,
16785                 .flags = GENL_UNS_ADMIN_PERM,
16786                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16787         },
16788         {
16789                 .cmd = NL80211_CMD_DEL_STATION,
16790                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16791                 .doit = nl80211_del_station,
16792                 .flags = GENL_UNS_ADMIN_PERM,
16793                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16794         },
16795         {
16796                 .cmd = NL80211_CMD_GET_MPATH,
16797                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16798                 .doit = nl80211_get_mpath,
16799                 .dumpit = nl80211_dump_mpath,
16800                 .flags = GENL_UNS_ADMIN_PERM,
16801                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16802         },
16803         {
16804                 .cmd = NL80211_CMD_GET_MPP,
16805                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16806                 .doit = nl80211_get_mpp,
16807                 .dumpit = nl80211_dump_mpp,
16808                 .flags = GENL_UNS_ADMIN_PERM,
16809                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16810         },
16811         {
16812                 .cmd = NL80211_CMD_SET_MPATH,
16813                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16814                 .doit = nl80211_set_mpath,
16815                 .flags = GENL_UNS_ADMIN_PERM,
16816                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16817         },
16818         {
16819                 .cmd = NL80211_CMD_NEW_MPATH,
16820                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16821                 .doit = nl80211_new_mpath,
16822                 .flags = GENL_UNS_ADMIN_PERM,
16823                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16824         },
16825         {
16826                 .cmd = NL80211_CMD_DEL_MPATH,
16827                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16828                 .doit = nl80211_del_mpath,
16829                 .flags = GENL_UNS_ADMIN_PERM,
16830                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16831         },
16832         {
16833                 .cmd = NL80211_CMD_SET_BSS,
16834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16835                 .doit = nl80211_set_bss,
16836                 .flags = GENL_UNS_ADMIN_PERM,
16837                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16838                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16839         },
16840         {
16841                 .cmd = NL80211_CMD_GET_REG,
16842                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16843                 .doit = nl80211_get_reg_do,
16844                 .dumpit = nl80211_get_reg_dump,
16845                 /* can be retrieved by unprivileged users */
16846         },
16847 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16848         {
16849                 .cmd = NL80211_CMD_SET_REG,
16850                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16851                 .doit = nl80211_set_reg,
16852                 .flags = GENL_ADMIN_PERM,
16853         },
16854 #endif
16855         {
16856                 .cmd = NL80211_CMD_REQ_SET_REG,
16857                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16858                 .doit = nl80211_req_set_reg,
16859                 .flags = GENL_ADMIN_PERM,
16860         },
16861         {
16862                 .cmd = NL80211_CMD_RELOAD_REGDB,
16863                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864                 .doit = nl80211_reload_regdb,
16865                 .flags = GENL_ADMIN_PERM,
16866         },
16867         {
16868                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16869                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16870                 .doit = nl80211_get_mesh_config,
16871                 /* can be retrieved by unprivileged users */
16872                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16873         },
16874         {
16875                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16876                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16877                 .doit = nl80211_update_mesh_config,
16878                 .flags = GENL_UNS_ADMIN_PERM,
16879                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16880         },
16881         {
16882                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16883                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16884                 .doit = nl80211_trigger_scan,
16885                 .flags = GENL_UNS_ADMIN_PERM,
16886                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16887         },
16888         {
16889                 .cmd = NL80211_CMD_ABORT_SCAN,
16890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16891                 .doit = nl80211_abort_scan,
16892                 .flags = GENL_UNS_ADMIN_PERM,
16893                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16894         },
16895         {
16896                 .cmd = NL80211_CMD_GET_SCAN,
16897                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16898                 .dumpit = nl80211_dump_scan,
16899         },
16900         {
16901                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16902                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16903                 .doit = nl80211_start_sched_scan,
16904                 .flags = GENL_UNS_ADMIN_PERM,
16905                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16906         },
16907         {
16908                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16910                 .doit = nl80211_stop_sched_scan,
16911                 .flags = GENL_UNS_ADMIN_PERM,
16912                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16913         },
16914         {
16915                 .cmd = NL80211_CMD_AUTHENTICATE,
16916                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16917                 .doit = nl80211_authenticate,
16918                 .flags = GENL_UNS_ADMIN_PERM,
16919                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16920                                          NL80211_FLAG_CLEAR_SKB),
16921         },
16922         {
16923                 .cmd = NL80211_CMD_ASSOCIATE,
16924                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16925                 .doit = nl80211_associate,
16926                 .flags = GENL_UNS_ADMIN_PERM,
16927                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16928                                          NL80211_FLAG_CLEAR_SKB),
16929         },
16930         {
16931                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16932                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16933                 .doit = nl80211_deauthenticate,
16934                 .flags = GENL_UNS_ADMIN_PERM,
16935                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16936         },
16937         {
16938                 .cmd = NL80211_CMD_DISASSOCIATE,
16939                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16940                 .doit = nl80211_disassociate,
16941                 .flags = GENL_UNS_ADMIN_PERM,
16942                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16943         },
16944         {
16945                 .cmd = NL80211_CMD_JOIN_IBSS,
16946                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16947                 .doit = nl80211_join_ibss,
16948                 .flags = GENL_UNS_ADMIN_PERM,
16949                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16950         },
16951         {
16952                 .cmd = NL80211_CMD_LEAVE_IBSS,
16953                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16954                 .doit = nl80211_leave_ibss,
16955                 .flags = GENL_UNS_ADMIN_PERM,
16956                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16957         },
16958 #ifdef CONFIG_NL80211_TESTMODE
16959         {
16960                 .cmd = NL80211_CMD_TESTMODE,
16961                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16962                 .doit = nl80211_testmode_do,
16963                 .dumpit = nl80211_testmode_dump,
16964                 .flags = GENL_UNS_ADMIN_PERM,
16965                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16966         },
16967 #endif
16968         {
16969                 .cmd = NL80211_CMD_CONNECT,
16970                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16971                 .doit = nl80211_connect,
16972                 .flags = GENL_UNS_ADMIN_PERM,
16973                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16974                                          NL80211_FLAG_CLEAR_SKB),
16975         },
16976         {
16977                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16978                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16979                 .doit = nl80211_update_connect_params,
16980                 .flags = GENL_ADMIN_PERM,
16981                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16982                                          NL80211_FLAG_CLEAR_SKB),
16983         },
16984         {
16985                 .cmd = NL80211_CMD_DISCONNECT,
16986                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16987                 .doit = nl80211_disconnect,
16988                 .flags = GENL_UNS_ADMIN_PERM,
16989                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16990         },
16991         {
16992                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16993                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16994                 .doit = nl80211_wiphy_netns,
16995                 .flags = GENL_UNS_ADMIN_PERM,
16996                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16997                                          NL80211_FLAG_NEED_RTNL |
16998                                          NL80211_FLAG_NO_WIPHY_MTX),
16999         },
17000         {
17001                 .cmd = NL80211_CMD_GET_SURVEY,
17002                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17003                 .dumpit = nl80211_dump_survey,
17004         },
17005         {
17006                 .cmd = NL80211_CMD_SET_PMKSA,
17007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17008                 .doit = nl80211_setdel_pmksa,
17009                 .flags = GENL_UNS_ADMIN_PERM,
17010                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17011                                          NL80211_FLAG_CLEAR_SKB),
17012         },
17013         {
17014                 .cmd = NL80211_CMD_DEL_PMKSA,
17015                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17016                 .doit = nl80211_setdel_pmksa,
17017                 .flags = GENL_UNS_ADMIN_PERM,
17018                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17019         },
17020         {
17021                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17022                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17023                 .doit = nl80211_flush_pmksa,
17024                 .flags = GENL_UNS_ADMIN_PERM,
17025                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17026         },
17027         {
17028                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17030                 .doit = nl80211_remain_on_channel,
17031                 .flags = GENL_UNS_ADMIN_PERM,
17032                 /* FIXME: requiring a link ID here is probably not good */
17033                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17034                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17035         },
17036         {
17037                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17039                 .doit = nl80211_cancel_remain_on_channel,
17040                 .flags = GENL_UNS_ADMIN_PERM,
17041                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17042         },
17043         {
17044                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17046                 .doit = nl80211_set_tx_bitrate_mask,
17047                 .flags = GENL_UNS_ADMIN_PERM,
17048                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17049                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17050         },
17051         {
17052                 .cmd = NL80211_CMD_REGISTER_FRAME,
17053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17054                 .doit = nl80211_register_mgmt,
17055                 .flags = GENL_UNS_ADMIN_PERM,
17056                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17057         },
17058         {
17059                 .cmd = NL80211_CMD_FRAME,
17060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17061                 .doit = nl80211_tx_mgmt,
17062                 .flags = GENL_UNS_ADMIN_PERM,
17063                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17064         },
17065         {
17066                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17067                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17068                 .doit = nl80211_tx_mgmt_cancel_wait,
17069                 .flags = GENL_UNS_ADMIN_PERM,
17070                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17071         },
17072         {
17073                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17075                 .doit = nl80211_set_power_save,
17076                 .flags = GENL_UNS_ADMIN_PERM,
17077                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17078         },
17079         {
17080                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17082                 .doit = nl80211_get_power_save,
17083                 /* can be retrieved by unprivileged users */
17084                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17085         },
17086         {
17087                 .cmd = NL80211_CMD_SET_CQM,
17088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17089                 .doit = nl80211_set_cqm,
17090                 .flags = GENL_UNS_ADMIN_PERM,
17091                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17092         },
17093         {
17094                 .cmd = NL80211_CMD_SET_CHANNEL,
17095                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17096                 .doit = nl80211_set_channel,
17097                 .flags = GENL_UNS_ADMIN_PERM,
17098                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17099                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17100         },
17101         {
17102                 .cmd = NL80211_CMD_JOIN_MESH,
17103                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17104                 .doit = nl80211_join_mesh,
17105                 .flags = GENL_UNS_ADMIN_PERM,
17106                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17107         },
17108         {
17109                 .cmd = NL80211_CMD_LEAVE_MESH,
17110                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17111                 .doit = nl80211_leave_mesh,
17112                 .flags = GENL_UNS_ADMIN_PERM,
17113                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17114         },
17115         {
17116                 .cmd = NL80211_CMD_JOIN_OCB,
17117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17118                 .doit = nl80211_join_ocb,
17119                 .flags = GENL_UNS_ADMIN_PERM,
17120                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17121         },
17122         {
17123                 .cmd = NL80211_CMD_LEAVE_OCB,
17124                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17125                 .doit = nl80211_leave_ocb,
17126                 .flags = GENL_UNS_ADMIN_PERM,
17127                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17128         },
17129 #ifdef CONFIG_PM
17130         {
17131                 .cmd = NL80211_CMD_GET_WOWLAN,
17132                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17133                 .doit = nl80211_get_wowlan,
17134                 /* can be retrieved by unprivileged users */
17135                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17136         },
17137         {
17138                 .cmd = NL80211_CMD_SET_WOWLAN,
17139                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17140                 .doit = nl80211_set_wowlan,
17141                 .flags = GENL_UNS_ADMIN_PERM,
17142                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17143         },
17144 #endif
17145         {
17146                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17147                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17148                 .doit = nl80211_set_rekey_data,
17149                 .flags = GENL_UNS_ADMIN_PERM,
17150                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17151                                          NL80211_FLAG_CLEAR_SKB),
17152         },
17153         {
17154                 .cmd = NL80211_CMD_TDLS_MGMT,
17155                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17156                 .doit = nl80211_tdls_mgmt,
17157                 .flags = GENL_UNS_ADMIN_PERM,
17158                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17159                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17160         },
17161         {
17162                 .cmd = NL80211_CMD_TDLS_OPER,
17163                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17164                 .doit = nl80211_tdls_oper,
17165                 .flags = GENL_UNS_ADMIN_PERM,
17166                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17167         },
17168         {
17169                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17170                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17171                 .doit = nl80211_register_unexpected_frame,
17172                 .flags = GENL_UNS_ADMIN_PERM,
17173                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17174         },
17175         {
17176                 .cmd = NL80211_CMD_PROBE_CLIENT,
17177                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17178                 .doit = nl80211_probe_client,
17179                 .flags = GENL_UNS_ADMIN_PERM,
17180                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17181         },
17182         {
17183                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17185                 .doit = nl80211_register_beacons,
17186                 .flags = GENL_UNS_ADMIN_PERM,
17187                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17188         },
17189         {
17190                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17191                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17192                 .doit = nl80211_set_noack_map,
17193                 .flags = GENL_UNS_ADMIN_PERM,
17194                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17195         },
17196         {
17197                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17198                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17199                 .doit = nl80211_start_p2p_device,
17200                 .flags = GENL_UNS_ADMIN_PERM,
17201                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17202                                          NL80211_FLAG_NEED_RTNL),
17203         },
17204         {
17205                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17206                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17207                 .doit = nl80211_stop_p2p_device,
17208                 .flags = GENL_UNS_ADMIN_PERM,
17209                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17210                                          NL80211_FLAG_NEED_RTNL),
17211         },
17212         {
17213                 .cmd = NL80211_CMD_START_NAN,
17214                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17215                 .doit = nl80211_start_nan,
17216                 .flags = GENL_ADMIN_PERM,
17217                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17218                                          NL80211_FLAG_NEED_RTNL),
17219         },
17220         {
17221                 .cmd = NL80211_CMD_STOP_NAN,
17222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17223                 .doit = nl80211_stop_nan,
17224                 .flags = GENL_ADMIN_PERM,
17225                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17226                                          NL80211_FLAG_NEED_RTNL),
17227         },
17228         {
17229                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17230                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17231                 .doit = nl80211_nan_add_func,
17232                 .flags = GENL_ADMIN_PERM,
17233                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17234         },
17235         {
17236                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17237                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17238                 .doit = nl80211_nan_del_func,
17239                 .flags = GENL_ADMIN_PERM,
17240                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17241         },
17242         {
17243                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17245                 .doit = nl80211_nan_change_config,
17246                 .flags = GENL_ADMIN_PERM,
17247                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17248         },
17249         {
17250                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17251                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17252                 .doit = nl80211_set_mcast_rate,
17253                 .flags = GENL_UNS_ADMIN_PERM,
17254                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17255         },
17256         {
17257                 .cmd = NL80211_CMD_SET_MAC_ACL,
17258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17259                 .doit = nl80211_set_mac_acl,
17260                 .flags = GENL_UNS_ADMIN_PERM,
17261                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17262                                          NL80211_FLAG_MLO_UNSUPPORTED),
17263         },
17264         {
17265                 .cmd = NL80211_CMD_RADAR_DETECT,
17266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17267                 .doit = nl80211_start_radar_detection,
17268                 .flags = GENL_UNS_ADMIN_PERM,
17269                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17270                                          NL80211_FLAG_NO_WIPHY_MTX |
17271                                          NL80211_FLAG_MLO_UNSUPPORTED),
17272         },
17273         {
17274                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17275                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17276                 .doit = nl80211_get_protocol_features,
17277         },
17278         {
17279                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17281                 .doit = nl80211_update_ft_ies,
17282                 .flags = GENL_UNS_ADMIN_PERM,
17283                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17284         },
17285         {
17286                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17287                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17288                 .doit = nl80211_crit_protocol_start,
17289                 .flags = GENL_UNS_ADMIN_PERM,
17290                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17291         },
17292         {
17293                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17294                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17295                 .doit = nl80211_crit_protocol_stop,
17296                 .flags = GENL_UNS_ADMIN_PERM,
17297                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17298         },
17299         {
17300                 .cmd = NL80211_CMD_GET_COALESCE,
17301                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17302                 .doit = nl80211_get_coalesce,
17303                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17304         },
17305         {
17306                 .cmd = NL80211_CMD_SET_COALESCE,
17307                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17308                 .doit = nl80211_set_coalesce,
17309                 .flags = GENL_UNS_ADMIN_PERM,
17310                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17311         },
17312         {
17313                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17314                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17315                 .doit = nl80211_channel_switch,
17316                 .flags = GENL_UNS_ADMIN_PERM,
17317                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17318                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17319         },
17320         {
17321                 .cmd = NL80211_CMD_VENDOR,
17322                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17323                 .doit = nl80211_vendor_cmd,
17324                 .dumpit = nl80211_vendor_cmd_dump,
17325                 .flags = GENL_UNS_ADMIN_PERM,
17326                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17327                                          NL80211_FLAG_CLEAR_SKB),
17328         },
17329         {
17330                 .cmd = NL80211_CMD_SET_QOS_MAP,
17331                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17332                 .doit = nl80211_set_qos_map,
17333                 .flags = GENL_UNS_ADMIN_PERM,
17334                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17335         },
17336         {
17337                 .cmd = NL80211_CMD_ADD_TX_TS,
17338                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17339                 .doit = nl80211_add_tx_ts,
17340                 .flags = GENL_UNS_ADMIN_PERM,
17341                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17342                                          NL80211_FLAG_MLO_UNSUPPORTED),
17343         },
17344         {
17345                 .cmd = NL80211_CMD_DEL_TX_TS,
17346                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17347                 .doit = nl80211_del_tx_ts,
17348                 .flags = GENL_UNS_ADMIN_PERM,
17349                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17350         },
17351         {
17352                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17353                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17354                 .doit = nl80211_tdls_channel_switch,
17355                 .flags = GENL_UNS_ADMIN_PERM,
17356                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17357         },
17358         {
17359                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17361                 .doit = nl80211_tdls_cancel_channel_switch,
17362                 .flags = GENL_UNS_ADMIN_PERM,
17363                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17364         },
17365         {
17366                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17367                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17368                 .doit = nl80211_set_multicast_to_unicast,
17369                 .flags = GENL_UNS_ADMIN_PERM,
17370                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17371         },
17372         {
17373                 .cmd = NL80211_CMD_SET_PMK,
17374                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17375                 .doit = nl80211_set_pmk,
17376                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17377                                          NL80211_FLAG_CLEAR_SKB),
17378         },
17379         {
17380                 .cmd = NL80211_CMD_DEL_PMK,
17381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17382                 .doit = nl80211_del_pmk,
17383                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17384         },
17385         {
17386                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17387                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17388                 .doit = nl80211_external_auth,
17389                 .flags = GENL_ADMIN_PERM,
17390                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17391         },
17392         {
17393                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17394                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17395                 .doit = nl80211_tx_control_port,
17396                 .flags = GENL_UNS_ADMIN_PERM,
17397                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17398         },
17399         {
17400                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17402                 .doit = nl80211_get_ftm_responder_stats,
17403                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17404                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17405         },
17406         {
17407                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17409                 .doit = nl80211_pmsr_start,
17410                 .flags = GENL_UNS_ADMIN_PERM,
17411                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17412         },
17413         {
17414                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17415                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17416                 .doit = nl80211_notify_radar_detection,
17417                 .flags = GENL_UNS_ADMIN_PERM,
17418                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17419         },
17420         {
17421                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17422                 .doit = nl80211_update_owe_info,
17423                 .flags = GENL_ADMIN_PERM,
17424                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17425         },
17426         {
17427                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17428                 .doit = nl80211_probe_mesh_link,
17429                 .flags = GENL_UNS_ADMIN_PERM,
17430                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17431         },
17432         {
17433                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17434                 .doit = nl80211_set_tid_config,
17435                 .flags = GENL_UNS_ADMIN_PERM,
17436                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17437                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17438         },
17439         {
17440                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17442                 .doit = nl80211_set_sar_specs,
17443                 .flags = GENL_UNS_ADMIN_PERM,
17444                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17445                                          NL80211_FLAG_NEED_RTNL),
17446         },
17447         {
17448                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17449                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17450                 .doit = nl80211_color_change,
17451                 .flags = GENL_UNS_ADMIN_PERM,
17452                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17453         },
17454         {
17455                 .cmd = NL80211_CMD_SET_FILS_AAD,
17456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17457                 .doit = nl80211_set_fils_aad,
17458                 .flags = GENL_UNS_ADMIN_PERM,
17459                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17460         },
17461         {
17462                 .cmd = NL80211_CMD_ADD_LINK,
17463                 .doit = nl80211_add_link,
17464                 .flags = GENL_UNS_ADMIN_PERM,
17465                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17466         },
17467         {
17468                 .cmd = NL80211_CMD_REMOVE_LINK,
17469                 .doit = nl80211_remove_link,
17470                 .flags = GENL_UNS_ADMIN_PERM,
17471                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17472                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17473         },
17474         {
17475                 .cmd = NL80211_CMD_ADD_LINK_STA,
17476                 .doit = nl80211_add_link_station,
17477                 .flags = GENL_UNS_ADMIN_PERM,
17478                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17479                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17480         },
17481         {
17482                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17483                 .doit = nl80211_modify_link_station,
17484                 .flags = GENL_UNS_ADMIN_PERM,
17485                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17486                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17487         },
17488         {
17489                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17490                 .doit = nl80211_remove_link_station,
17491                 .flags = GENL_UNS_ADMIN_PERM,
17492                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17493                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17494         },
17495         {
17496                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17497                 .doit = nl80211_set_hw_timestamp,
17498                 .flags = GENL_UNS_ADMIN_PERM,
17499                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17500         },
17501 };
17502
17503 static struct genl_family nl80211_fam __ro_after_init = {
17504         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17505         .hdrsize = 0,                   /* no private header */
17506         .version = 1,                   /* no particular meaning now */
17507         .maxattr = NL80211_ATTR_MAX,
17508         .policy = nl80211_policy,
17509         .netnsok = true,
17510         .pre_doit = nl80211_pre_doit,
17511         .post_doit = nl80211_post_doit,
17512         .module = THIS_MODULE,
17513         .ops = nl80211_ops,
17514         .n_ops = ARRAY_SIZE(nl80211_ops),
17515         .small_ops = nl80211_small_ops,
17516         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17517         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17518         .mcgrps = nl80211_mcgrps,
17519         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17520         .parallel_ops = true,
17521 };
17522
17523 /* notification functions */
17524
17525 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17526                           enum nl80211_commands cmd)
17527 {
17528         struct sk_buff *msg;
17529         struct nl80211_dump_wiphy_state state = {};
17530
17531         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17532                 cmd != NL80211_CMD_DEL_WIPHY);
17533
17534         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17535         if (!msg)
17536                 return;
17537
17538         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17539                 nlmsg_free(msg);
17540                 return;
17541         }
17542
17543         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17544                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17545 }
17546
17547 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17548                                 struct wireless_dev *wdev,
17549                                 enum nl80211_commands cmd)
17550 {
17551         struct sk_buff *msg;
17552
17553         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17554         if (!msg)
17555                 return;
17556
17557         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17558                 nlmsg_free(msg);
17559                 return;
17560         }
17561
17562         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17563                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17564 }
17565
17566 static int nl80211_add_scan_req(struct sk_buff *msg,
17567                                 struct cfg80211_registered_device *rdev)
17568 {
17569         struct cfg80211_scan_request *req = rdev->scan_req;
17570         struct nlattr *nest;
17571         int i;
17572         struct cfg80211_scan_info *info;
17573
17574         if (WARN_ON(!req))
17575                 return 0;
17576
17577         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17578         if (!nest)
17579                 goto nla_put_failure;
17580         for (i = 0; i < req->n_ssids; i++) {
17581                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17582                         goto nla_put_failure;
17583         }
17584         nla_nest_end(msg, nest);
17585
17586         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17587                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17588                 if (!nest)
17589                         goto nla_put_failure;
17590                 for (i = 0; i < req->n_channels; i++) {
17591                         if (nla_put_u32(msg, i,
17592                                    ieee80211_channel_to_khz(req->channels[i])))
17593                                 goto nla_put_failure;
17594                 }
17595                 nla_nest_end(msg, nest);
17596         } else {
17597                 nest = nla_nest_start_noflag(msg,
17598                                              NL80211_ATTR_SCAN_FREQUENCIES);
17599                 if (!nest)
17600                         goto nla_put_failure;
17601                 for (i = 0; i < req->n_channels; i++) {
17602                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17603                                 goto nla_put_failure;
17604                 }
17605                 nla_nest_end(msg, nest);
17606         }
17607
17608         if (req->ie &&
17609             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17610                 goto nla_put_failure;
17611
17612         if (req->flags &&
17613             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17614                 goto nla_put_failure;
17615
17616         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17617                 &rdev->scan_req->info;
17618         if (info->scan_start_tsf &&
17619             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17620                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17621              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17622                      info->tsf_bssid)))
17623                 goto nla_put_failure;
17624
17625         return 0;
17626  nla_put_failure:
17627         return -ENOBUFS;
17628 }
17629
17630 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17631                                  struct cfg80211_registered_device *rdev,
17632                                  struct wireless_dev *wdev,
17633                                  u32 portid, u32 seq, int flags,
17634                                  u32 cmd)
17635 {
17636         void *hdr;
17637
17638         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17639         if (!hdr)
17640                 return -1;
17641
17642         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17643             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17644                                          wdev->netdev->ifindex)) ||
17645             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17646                               NL80211_ATTR_PAD))
17647                 goto nla_put_failure;
17648
17649         /* ignore errors and send incomplete event anyway */
17650         nl80211_add_scan_req(msg, rdev);
17651
17652         genlmsg_end(msg, hdr);
17653         return 0;
17654
17655  nla_put_failure:
17656         genlmsg_cancel(msg, hdr);
17657         return -EMSGSIZE;
17658 }
17659
17660 static int
17661 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17662                             struct cfg80211_sched_scan_request *req, u32 cmd)
17663 {
17664         void *hdr;
17665
17666         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17667         if (!hdr)
17668                 return -1;
17669
17670         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17671                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17672             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17673             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17674                               NL80211_ATTR_PAD))
17675                 goto nla_put_failure;
17676
17677         genlmsg_end(msg, hdr);
17678         return 0;
17679
17680  nla_put_failure:
17681         genlmsg_cancel(msg, hdr);
17682         return -EMSGSIZE;
17683 }
17684
17685 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17686                              struct wireless_dev *wdev)
17687 {
17688         struct sk_buff *msg;
17689
17690         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17691         if (!msg)
17692                 return;
17693
17694         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17695                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17696                 nlmsg_free(msg);
17697                 return;
17698         }
17699
17700         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17701                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17702 }
17703
17704 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17705                                        struct wireless_dev *wdev, bool aborted)
17706 {
17707         struct sk_buff *msg;
17708
17709         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17710         if (!msg)
17711                 return NULL;
17712
17713         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17714                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17715                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17716                 nlmsg_free(msg);
17717                 return NULL;
17718         }
17719
17720         return msg;
17721 }
17722
17723 /* send message created by nl80211_build_scan_msg() */
17724 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17725                            struct sk_buff *msg)
17726 {
17727         if (!msg)
17728                 return;
17729
17730         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17731                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17732 }
17733
17734 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17735 {
17736         struct sk_buff *msg;
17737
17738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17739         if (!msg)
17740                 return;
17741
17742         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17743                 nlmsg_free(msg);
17744                 return;
17745         }
17746
17747         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17748                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17749 }
17750
17751 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17752                                           struct regulatory_request *request)
17753 {
17754         /* Userspace can always count this one always being set */
17755         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17756                 goto nla_put_failure;
17757
17758         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17759                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17760                                NL80211_REGDOM_TYPE_WORLD))
17761                         goto nla_put_failure;
17762         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17763                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17764                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17765                         goto nla_put_failure;
17766         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17767                    request->intersect) {
17768                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17769                                NL80211_REGDOM_TYPE_INTERSECTION))
17770                         goto nla_put_failure;
17771         } else {
17772                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17773                                NL80211_REGDOM_TYPE_COUNTRY) ||
17774                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17775                                    request->alpha2))
17776                         goto nla_put_failure;
17777         }
17778
17779         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17780                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17781
17782                 if (wiphy &&
17783                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17784                         goto nla_put_failure;
17785
17786                 if (wiphy &&
17787                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17788                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17789                         goto nla_put_failure;
17790         }
17791
17792         return true;
17793
17794 nla_put_failure:
17795         return false;
17796 }
17797
17798 /*
17799  * This can happen on global regulatory changes or device specific settings
17800  * based on custom regulatory domains.
17801  */
17802 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17803                                      struct regulatory_request *request)
17804 {
17805         struct sk_buff *msg;
17806         void *hdr;
17807
17808         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17809         if (!msg)
17810                 return;
17811
17812         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17813         if (!hdr)
17814                 goto nla_put_failure;
17815
17816         if (!nl80211_reg_change_event_fill(msg, request))
17817                 goto nla_put_failure;
17818
17819         genlmsg_end(msg, hdr);
17820
17821         rcu_read_lock();
17822         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17823                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17824         rcu_read_unlock();
17825
17826         return;
17827
17828 nla_put_failure:
17829         nlmsg_free(msg);
17830 }
17831
17832 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17833                                     struct net_device *netdev,
17834                                     const u8 *buf, size_t len,
17835                                     enum nl80211_commands cmd, gfp_t gfp,
17836                                     int uapsd_queues, const u8 *req_ies,
17837                                     size_t req_ies_len, bool reconnect)
17838 {
17839         struct sk_buff *msg;
17840         void *hdr;
17841
17842         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17843         if (!msg)
17844                 return;
17845
17846         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17847         if (!hdr) {
17848                 nlmsg_free(msg);
17849                 return;
17850         }
17851
17852         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17853             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17854             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17855             (req_ies &&
17856              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17857                 goto nla_put_failure;
17858
17859         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17860                 goto nla_put_failure;
17861
17862         if (uapsd_queues >= 0) {
17863                 struct nlattr *nla_wmm =
17864                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17865                 if (!nla_wmm)
17866                         goto nla_put_failure;
17867
17868                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17869                                uapsd_queues))
17870                         goto nla_put_failure;
17871
17872                 nla_nest_end(msg, nla_wmm);
17873         }
17874
17875         genlmsg_end(msg, hdr);
17876
17877         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17878                                 NL80211_MCGRP_MLME, gfp);
17879         return;
17880
17881  nla_put_failure:
17882         nlmsg_free(msg);
17883 }
17884
17885 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17886                           struct net_device *netdev, const u8 *buf,
17887                           size_t len, gfp_t gfp)
17888 {
17889         nl80211_send_mlme_event(rdev, netdev, buf, len,
17890                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17891                                 false);
17892 }
17893
17894 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17895                            struct net_device *netdev,
17896                            struct cfg80211_rx_assoc_resp *data)
17897 {
17898         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17899                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17900                                 data->uapsd_queues,
17901                                 data->req_ies, data->req_ies_len, false);
17902 }
17903
17904 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17905                          struct net_device *netdev, const u8 *buf,
17906                          size_t len, bool reconnect, gfp_t gfp)
17907 {
17908         nl80211_send_mlme_event(rdev, netdev, buf, len,
17909                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17910                                 reconnect);
17911 }
17912
17913 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17914                            struct net_device *netdev, const u8 *buf,
17915                            size_t len, bool reconnect, gfp_t gfp)
17916 {
17917         nl80211_send_mlme_event(rdev, netdev, buf, len,
17918                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17919                                 reconnect);
17920 }
17921
17922 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17923                                   size_t len)
17924 {
17925         struct wireless_dev *wdev = dev->ieee80211_ptr;
17926         struct wiphy *wiphy = wdev->wiphy;
17927         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17928         const struct ieee80211_mgmt *mgmt = (void *)buf;
17929         u32 cmd;
17930
17931         if (WARN_ON(len < 2))
17932                 return;
17933
17934         if (ieee80211_is_deauth(mgmt->frame_control)) {
17935                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17936         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17937                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17938         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17939                 if (wdev->unprot_beacon_reported &&
17940                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17941                         return;
17942                 cmd = NL80211_CMD_UNPROT_BEACON;
17943                 wdev->unprot_beacon_reported = jiffies;
17944         } else {
17945                 return;
17946         }
17947
17948         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17949         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17950                                 NULL, 0, false);
17951 }
17952 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17953
17954 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17955                                       struct net_device *netdev, int cmd,
17956                                       const u8 *addr, gfp_t gfp)
17957 {
17958         struct sk_buff *msg;
17959         void *hdr;
17960
17961         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17962         if (!msg)
17963                 return;
17964
17965         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17966         if (!hdr) {
17967                 nlmsg_free(msg);
17968                 return;
17969         }
17970
17971         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17972             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17973             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17974             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17975                 goto nla_put_failure;
17976
17977         genlmsg_end(msg, hdr);
17978
17979         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17980                                 NL80211_MCGRP_MLME, gfp);
17981         return;
17982
17983  nla_put_failure:
17984         nlmsg_free(msg);
17985 }
17986
17987 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17988                                struct net_device *netdev, const u8 *addr,
17989                                gfp_t gfp)
17990 {
17991         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17992                                   addr, gfp);
17993 }
17994
17995 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17996                                 struct net_device *netdev, const u8 *addr,
17997                                 gfp_t gfp)
17998 {
17999         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18000                                   addr, gfp);
18001 }
18002
18003 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18004                                  struct net_device *netdev,
18005                                  struct cfg80211_connect_resp_params *cr,
18006                                  gfp_t gfp)
18007 {
18008         struct sk_buff *msg;
18009         void *hdr;
18010         unsigned int link;
18011         size_t link_info_size = 0;
18012         const u8 *connected_addr = cr->valid_links ?
18013                                    cr->ap_mld_addr : cr->links[0].bssid;
18014
18015         if (cr->valid_links) {
18016                 for_each_valid_link(cr, link) {
18017                         /* Nested attribute header */
18018                         link_info_size += NLA_HDRLEN;
18019                         /* Link ID */
18020                         link_info_size += nla_total_size(sizeof(u8));
18021                         link_info_size += cr->links[link].addr ?
18022                                           nla_total_size(ETH_ALEN) : 0;
18023                         link_info_size += (cr->links[link].bssid ||
18024                                            cr->links[link].bss) ?
18025                                           nla_total_size(ETH_ALEN) : 0;
18026                         link_info_size += nla_total_size(sizeof(u16));
18027                 }
18028         }
18029
18030         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18031                         cr->fils.kek_len + cr->fils.pmk_len +
18032                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18033                         gfp);
18034         if (!msg)
18035                 return;
18036
18037         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18038         if (!hdr) {
18039                 nlmsg_free(msg);
18040                 return;
18041         }
18042
18043         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18044             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18045             (connected_addr &&
18046              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18047             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18048                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18049                         cr->status) ||
18050             (cr->status < 0 &&
18051              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18052               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18053                           cr->timeout_reason))) ||
18054             (cr->req_ie &&
18055              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18056             (cr->resp_ie &&
18057              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18058                      cr->resp_ie)) ||
18059             (cr->fils.update_erp_next_seq_num &&
18060              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18061                          cr->fils.erp_next_seq_num)) ||
18062             (cr->status == WLAN_STATUS_SUCCESS &&
18063              ((cr->fils.kek &&
18064                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18065                        cr->fils.kek)) ||
18066               (cr->fils.pmk &&
18067                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18068               (cr->fils.pmkid &&
18069                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18070                 goto nla_put_failure;
18071
18072         if (cr->valid_links) {
18073                 int i = 1;
18074                 struct nlattr *nested;
18075
18076                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18077                 if (!nested)
18078                         goto nla_put_failure;
18079
18080                 for_each_valid_link(cr, link) {
18081                         struct nlattr *nested_mlo_links;
18082                         const u8 *bssid = cr->links[link].bss ?
18083                                           cr->links[link].bss->bssid :
18084                                           cr->links[link].bssid;
18085
18086                         nested_mlo_links = nla_nest_start(msg, i);
18087                         if (!nested_mlo_links)
18088                                 goto nla_put_failure;
18089
18090                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18091                             (bssid &&
18092                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18093                             (cr->links[link].addr &&
18094                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18095                                      cr->links[link].addr)) ||
18096                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18097                                         cr->links[link].status))
18098                                 goto nla_put_failure;
18099
18100                         nla_nest_end(msg, nested_mlo_links);
18101                         i++;
18102                 }
18103                 nla_nest_end(msg, nested);
18104         }
18105
18106         genlmsg_end(msg, hdr);
18107
18108         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18109                                 NL80211_MCGRP_MLME, gfp);
18110         return;
18111
18112  nla_put_failure:
18113         nlmsg_free(msg);
18114 }
18115
18116 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18117                          struct net_device *netdev,
18118                          struct cfg80211_roam_info *info, gfp_t gfp)
18119 {
18120         struct sk_buff *msg;
18121         void *hdr;
18122         size_t link_info_size = 0;
18123         unsigned int link;
18124         const u8 *connected_addr = info->ap_mld_addr ?
18125                                    info->ap_mld_addr :
18126                                    (info->links[0].bss ?
18127                                     info->links[0].bss->bssid :
18128                                     info->links[0].bssid);
18129
18130         if (info->valid_links) {
18131                 for_each_valid_link(info, link) {
18132                         /* Nested attribute header */
18133                         link_info_size += NLA_HDRLEN;
18134                         /* Link ID */
18135                         link_info_size += nla_total_size(sizeof(u8));
18136                         link_info_size += info->links[link].addr ?
18137                                           nla_total_size(ETH_ALEN) : 0;
18138                         link_info_size += (info->links[link].bssid ||
18139                                            info->links[link].bss) ?
18140                                           nla_total_size(ETH_ALEN) : 0;
18141                 }
18142         }
18143
18144         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18145                         info->fils.kek_len + info->fils.pmk_len +
18146                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18147                         link_info_size, gfp);
18148         if (!msg)
18149                 return;
18150
18151         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18152         if (!hdr) {
18153                 nlmsg_free(msg);
18154                 return;
18155         }
18156
18157         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18158             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18159             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18160             (info->req_ie &&
18161              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18162                      info->req_ie)) ||
18163             (info->resp_ie &&
18164              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18165                      info->resp_ie)) ||
18166             (info->fils.update_erp_next_seq_num &&
18167              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18168                          info->fils.erp_next_seq_num)) ||
18169             (info->fils.kek &&
18170              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18171                      info->fils.kek)) ||
18172             (info->fils.pmk &&
18173              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18174             (info->fils.pmkid &&
18175              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18176                 goto nla_put_failure;
18177
18178         if (info->valid_links) {
18179                 int i = 1;
18180                 struct nlattr *nested;
18181
18182                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18183                 if (!nested)
18184                         goto nla_put_failure;
18185
18186                 for_each_valid_link(info, link) {
18187                         struct nlattr *nested_mlo_links;
18188                         const u8 *bssid = info->links[link].bss ?
18189                                           info->links[link].bss->bssid :
18190                                           info->links[link].bssid;
18191
18192                         nested_mlo_links = nla_nest_start(msg, i);
18193                         if (!nested_mlo_links)
18194                                 goto nla_put_failure;
18195
18196                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18197                             (bssid &&
18198                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18199                             (info->links[link].addr &&
18200                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18201                                      info->links[link].addr)))
18202                                 goto nla_put_failure;
18203
18204                         nla_nest_end(msg, nested_mlo_links);
18205                         i++;
18206                 }
18207                 nla_nest_end(msg, nested);
18208         }
18209
18210         genlmsg_end(msg, hdr);
18211
18212         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18213                                 NL80211_MCGRP_MLME, gfp);
18214         return;
18215
18216  nla_put_failure:
18217         nlmsg_free(msg);
18218 }
18219
18220 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18221                                   struct net_device *netdev, const u8 *bssid,
18222                                   const u8 *td_bitmap, u8 td_bitmap_len)
18223 {
18224         struct sk_buff *msg;
18225         void *hdr;
18226
18227         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18228         if (!msg)
18229                 return;
18230
18231         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18232         if (!hdr) {
18233                 nlmsg_free(msg);
18234                 return;
18235         }
18236
18237         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18238             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18240                 goto nla_put_failure;
18241
18242         if ((td_bitmap_len > 0) && td_bitmap)
18243                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18244                             td_bitmap_len, td_bitmap))
18245                         goto nla_put_failure;
18246
18247         genlmsg_end(msg, hdr);
18248
18249         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18250                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18251         return;
18252
18253  nla_put_failure:
18254         nlmsg_free(msg);
18255 }
18256
18257 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18258                                struct net_device *netdev, u16 reason,
18259                                const u8 *ie, size_t ie_len, bool from_ap)
18260 {
18261         struct sk_buff *msg;
18262         void *hdr;
18263
18264         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18265         if (!msg)
18266                 return;
18267
18268         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18269         if (!hdr) {
18270                 nlmsg_free(msg);
18271                 return;
18272         }
18273
18274         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18275             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18276             (reason &&
18277              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18278             (from_ap &&
18279              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18280             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18281                 goto nla_put_failure;
18282
18283         genlmsg_end(msg, hdr);
18284
18285         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18286                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18287         return;
18288
18289  nla_put_failure:
18290         nlmsg_free(msg);
18291 }
18292
18293 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18294 {
18295         struct wireless_dev *wdev = dev->ieee80211_ptr;
18296         struct wiphy *wiphy = wdev->wiphy;
18297         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18298         struct sk_buff *msg;
18299         struct nlattr *links;
18300         void *hdr;
18301
18302         ASSERT_WDEV_LOCK(wdev);
18303         trace_cfg80211_links_removed(dev, link_mask);
18304
18305         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18306                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18307                 return;
18308
18309         if (WARN_ON(!wdev->valid_links || !link_mask ||
18310                     (wdev->valid_links & link_mask) != link_mask ||
18311                     wdev->valid_links == link_mask))
18312                 return;
18313
18314         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18315         wdev->valid_links &= ~link_mask;
18316
18317         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18318         if (!msg)
18319                 return;
18320
18321         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18322         if (!hdr) {
18323                 nlmsg_free(msg);
18324                 return;
18325         }
18326
18327         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18328             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18329                 goto nla_put_failure;
18330
18331         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18332         if (!links)
18333                 goto nla_put_failure;
18334
18335         while (link_mask) {
18336                 struct nlattr *link;
18337                 int link_id = __ffs(link_mask);
18338
18339                 link = nla_nest_start(msg, link_id + 1);
18340                 if (!link)
18341                         goto nla_put_failure;
18342
18343                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18344                         goto nla_put_failure;
18345
18346                 nla_nest_end(msg, link);
18347                 link_mask &= ~(1 << link_id);
18348         }
18349
18350         nla_nest_end(msg, links);
18351
18352         genlmsg_end(msg, hdr);
18353
18354         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18355                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18356         return;
18357
18358  nla_put_failure:
18359         nlmsg_free(msg);
18360 }
18361 EXPORT_SYMBOL(cfg80211_links_removed);
18362
18363 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18364                              struct net_device *netdev, const u8 *bssid,
18365                              gfp_t gfp)
18366 {
18367         struct sk_buff *msg;
18368         void *hdr;
18369
18370         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18371         if (!msg)
18372                 return;
18373
18374         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18375         if (!hdr) {
18376                 nlmsg_free(msg);
18377                 return;
18378         }
18379
18380         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18381             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18382             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18383                 goto nla_put_failure;
18384
18385         genlmsg_end(msg, hdr);
18386
18387         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18388                                 NL80211_MCGRP_MLME, gfp);
18389         return;
18390
18391  nla_put_failure:
18392         nlmsg_free(msg);
18393 }
18394
18395 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18396                                         const u8 *ie, u8 ie_len,
18397                                         int sig_dbm, gfp_t gfp)
18398 {
18399         struct wireless_dev *wdev = dev->ieee80211_ptr;
18400         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18401         struct sk_buff *msg;
18402         void *hdr;
18403
18404         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18405                 return;
18406
18407         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18408
18409         msg = nlmsg_new(100 + ie_len, gfp);
18410         if (!msg)
18411                 return;
18412
18413         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18414         if (!hdr) {
18415                 nlmsg_free(msg);
18416                 return;
18417         }
18418
18419         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18420             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18421             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18422             (ie_len && ie &&
18423              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18424             (sig_dbm &&
18425              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
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 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18438
18439 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18440                                  struct net_device *netdev, const u8 *addr,
18441                                  enum nl80211_key_type key_type, int key_id,
18442                                  const u8 *tsc, gfp_t gfp)
18443 {
18444         struct sk_buff *msg;
18445         void *hdr;
18446
18447         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18448         if (!msg)
18449                 return;
18450
18451         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18452         if (!hdr) {
18453                 nlmsg_free(msg);
18454                 return;
18455         }
18456
18457         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18458             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18459             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18460             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18461             (key_id != -1 &&
18462              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18463             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18464                 goto nla_put_failure;
18465
18466         genlmsg_end(msg, hdr);
18467
18468         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18469                                 NL80211_MCGRP_MLME, gfp);
18470         return;
18471
18472  nla_put_failure:
18473         nlmsg_free(msg);
18474 }
18475
18476 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18477                                     struct ieee80211_channel *channel_before,
18478                                     struct ieee80211_channel *channel_after)
18479 {
18480         struct sk_buff *msg;
18481         void *hdr;
18482         struct nlattr *nl_freq;
18483
18484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18485         if (!msg)
18486                 return;
18487
18488         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18489         if (!hdr) {
18490                 nlmsg_free(msg);
18491                 return;
18492         }
18493
18494         /*
18495          * Since we are applying the beacon hint to a wiphy we know its
18496          * wiphy_idx is valid
18497          */
18498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18499                 goto nla_put_failure;
18500
18501         /* Before */
18502         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18503         if (!nl_freq)
18504                 goto nla_put_failure;
18505
18506         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18507                 goto nla_put_failure;
18508         nla_nest_end(msg, nl_freq);
18509
18510         /* After */
18511         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18512         if (!nl_freq)
18513                 goto nla_put_failure;
18514
18515         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18516                 goto nla_put_failure;
18517         nla_nest_end(msg, nl_freq);
18518
18519         genlmsg_end(msg, hdr);
18520
18521         rcu_read_lock();
18522         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18523                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18524         rcu_read_unlock();
18525
18526         return;
18527
18528 nla_put_failure:
18529         nlmsg_free(msg);
18530 }
18531
18532 static void nl80211_send_remain_on_chan_event(
18533         int cmd, struct cfg80211_registered_device *rdev,
18534         struct wireless_dev *wdev, u64 cookie,
18535         struct ieee80211_channel *chan,
18536         unsigned int duration, gfp_t gfp)
18537 {
18538         struct sk_buff *msg;
18539         void *hdr;
18540
18541         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18542         if (!msg)
18543                 return;
18544
18545         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18546         if (!hdr) {
18547                 nlmsg_free(msg);
18548                 return;
18549         }
18550
18551         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18552             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18553                                          wdev->netdev->ifindex)) ||
18554             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18555                               NL80211_ATTR_PAD) ||
18556             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18557             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18558                         NL80211_CHAN_NO_HT) ||
18559             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18560                               NL80211_ATTR_PAD))
18561                 goto nla_put_failure;
18562
18563         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18564             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18565                 goto nla_put_failure;
18566
18567         genlmsg_end(msg, hdr);
18568
18569         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18570                                 NL80211_MCGRP_MLME, gfp);
18571         return;
18572
18573  nla_put_failure:
18574         nlmsg_free(msg);
18575 }
18576
18577 void cfg80211_assoc_comeback(struct net_device *netdev,
18578                              const u8 *ap_addr, u32 timeout)
18579 {
18580         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18581         struct wiphy *wiphy = wdev->wiphy;
18582         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18583         struct sk_buff *msg;
18584         void *hdr;
18585
18586         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18587
18588         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18589         if (!msg)
18590                 return;
18591
18592         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18593         if (!hdr) {
18594                 nlmsg_free(msg);
18595                 return;
18596         }
18597
18598         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18599             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18600             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18601             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18602                 goto nla_put_failure;
18603
18604         genlmsg_end(msg, hdr);
18605
18606         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18607                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18608         return;
18609
18610  nla_put_failure:
18611         nlmsg_free(msg);
18612 }
18613 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18614
18615 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18616                                struct ieee80211_channel *chan,
18617                                unsigned int duration, gfp_t gfp)
18618 {
18619         struct wiphy *wiphy = wdev->wiphy;
18620         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18621
18622         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18623         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18624                                           rdev, wdev, cookie, chan,
18625                                           duration, gfp);
18626 }
18627 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18628
18629 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18630                                         struct ieee80211_channel *chan,
18631                                         gfp_t gfp)
18632 {
18633         struct wiphy *wiphy = wdev->wiphy;
18634         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18635
18636         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18637         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18638                                           rdev, wdev, cookie, chan, 0, gfp);
18639 }
18640 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18641
18642 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18643                                         struct ieee80211_channel *chan,
18644                                         gfp_t gfp)
18645 {
18646         struct wiphy *wiphy = wdev->wiphy;
18647         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18648
18649         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18650         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18651                                           rdev, wdev, cookie, chan, 0, gfp);
18652 }
18653 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18654
18655 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18656                       struct station_info *sinfo, gfp_t gfp)
18657 {
18658         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18660         struct sk_buff *msg;
18661
18662         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18663
18664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18665         if (!msg)
18666                 return;
18667
18668         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18669                                  rdev, dev, mac_addr, sinfo) < 0) {
18670                 nlmsg_free(msg);
18671                 return;
18672         }
18673
18674         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18675                                 NL80211_MCGRP_MLME, gfp);
18676 }
18677 EXPORT_SYMBOL(cfg80211_new_sta);
18678
18679 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18680                             struct station_info *sinfo, gfp_t gfp)
18681 {
18682         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18683         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18684         struct sk_buff *msg;
18685         struct station_info empty_sinfo = {};
18686
18687         if (!sinfo)
18688                 sinfo = &empty_sinfo;
18689
18690         trace_cfg80211_del_sta(dev, mac_addr);
18691
18692         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18693         if (!msg) {
18694                 cfg80211_sinfo_release_content(sinfo);
18695                 return;
18696         }
18697
18698         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18699                                  rdev, dev, mac_addr, sinfo) < 0) {
18700                 nlmsg_free(msg);
18701                 return;
18702         }
18703
18704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18705                                 NL80211_MCGRP_MLME, gfp);
18706 }
18707 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18708
18709 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18710                           enum nl80211_connect_failed_reason reason,
18711                           gfp_t gfp)
18712 {
18713         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18714         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18715         struct sk_buff *msg;
18716         void *hdr;
18717
18718         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18719         if (!msg)
18720                 return;
18721
18722         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18723         if (!hdr) {
18724                 nlmsg_free(msg);
18725                 return;
18726         }
18727
18728         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18729             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18730             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18731                 goto nla_put_failure;
18732
18733         genlmsg_end(msg, hdr);
18734
18735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18736                                 NL80211_MCGRP_MLME, gfp);
18737         return;
18738
18739  nla_put_failure:
18740         nlmsg_free(msg);
18741 }
18742 EXPORT_SYMBOL(cfg80211_conn_failed);
18743
18744 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18745                                        const u8 *addr, gfp_t gfp)
18746 {
18747         struct wireless_dev *wdev = dev->ieee80211_ptr;
18748         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18749         struct sk_buff *msg;
18750         void *hdr;
18751         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18752
18753         if (!nlportid)
18754                 return false;
18755
18756         msg = nlmsg_new(100, gfp);
18757         if (!msg)
18758                 return true;
18759
18760         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18761         if (!hdr) {
18762                 nlmsg_free(msg);
18763                 return true;
18764         }
18765
18766         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18767             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18768             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18769                 goto nla_put_failure;
18770
18771         genlmsg_end(msg, hdr);
18772         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18773         return true;
18774
18775  nla_put_failure:
18776         nlmsg_free(msg);
18777         return true;
18778 }
18779
18780 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18781                                 const u8 *addr, gfp_t gfp)
18782 {
18783         struct wireless_dev *wdev = dev->ieee80211_ptr;
18784         bool ret;
18785
18786         trace_cfg80211_rx_spurious_frame(dev, addr);
18787
18788         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18789                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18790                 trace_cfg80211_return_bool(false);
18791                 return false;
18792         }
18793         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18794                                          addr, gfp);
18795         trace_cfg80211_return_bool(ret);
18796         return ret;
18797 }
18798 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18799
18800 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18801                                         const u8 *addr, gfp_t gfp)
18802 {
18803         struct wireless_dev *wdev = dev->ieee80211_ptr;
18804         bool ret;
18805
18806         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18807
18808         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18809                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18810                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18811                 trace_cfg80211_return_bool(false);
18812                 return false;
18813         }
18814         ret = __nl80211_unexpected_frame(dev,
18815                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18816                                          addr, gfp);
18817         trace_cfg80211_return_bool(ret);
18818         return ret;
18819 }
18820 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18821
18822 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18823                       struct wireless_dev *wdev, u32 nlportid,
18824                       struct cfg80211_rx_info *info, gfp_t gfp)
18825 {
18826         struct net_device *netdev = wdev->netdev;
18827         struct sk_buff *msg;
18828         void *hdr;
18829
18830         msg = nlmsg_new(100 + info->len, gfp);
18831         if (!msg)
18832                 return -ENOMEM;
18833
18834         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18835         if (!hdr) {
18836                 nlmsg_free(msg);
18837                 return -ENOMEM;
18838         }
18839
18840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18841             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18842                                         netdev->ifindex)) ||
18843             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18844                               NL80211_ATTR_PAD) ||
18845             (info->have_link_id &&
18846              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18847             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18848             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18849             (info->sig_dbm &&
18850              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18851             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18852             (info->flags &&
18853              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18854             (info->rx_tstamp && nla_put_u64_64bit(msg,
18855                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18856                                                   info->rx_tstamp,
18857                                                   NL80211_ATTR_PAD)) ||
18858             (info->ack_tstamp && nla_put_u64_64bit(msg,
18859                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18860                                                    info->ack_tstamp,
18861                                                    NL80211_ATTR_PAD)))
18862                 goto nla_put_failure;
18863
18864         genlmsg_end(msg, hdr);
18865
18866         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18867
18868  nla_put_failure:
18869         nlmsg_free(msg);
18870         return -ENOBUFS;
18871 }
18872
18873 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18874                                     struct cfg80211_tx_status *status,
18875                                     gfp_t gfp, enum nl80211_commands command)
18876 {
18877         struct wiphy *wiphy = wdev->wiphy;
18878         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18879         struct net_device *netdev = wdev->netdev;
18880         struct sk_buff *msg;
18881         void *hdr;
18882
18883         if (command == NL80211_CMD_FRAME_TX_STATUS)
18884                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18885                                               status->ack);
18886         else
18887                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18888                                                       status->ack);
18889
18890         msg = nlmsg_new(100 + status->len, gfp);
18891         if (!msg)
18892                 return;
18893
18894         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18895         if (!hdr) {
18896                 nlmsg_free(msg);
18897                 return;
18898         }
18899
18900         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18901             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18902                                    netdev->ifindex)) ||
18903             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18904                               NL80211_ATTR_PAD) ||
18905             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18906             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18907                               NL80211_ATTR_PAD) ||
18908             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18909             (status->tx_tstamp &&
18910              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18911                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18912             (status->ack_tstamp &&
18913              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18914                                status->ack_tstamp, NL80211_ATTR_PAD)))
18915                 goto nla_put_failure;
18916
18917         genlmsg_end(msg, hdr);
18918
18919         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18920                                 NL80211_MCGRP_MLME, gfp);
18921         return;
18922
18923 nla_put_failure:
18924         nlmsg_free(msg);
18925 }
18926
18927 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18928                                      const u8 *buf, size_t len, bool ack,
18929                                      gfp_t gfp)
18930 {
18931         struct cfg80211_tx_status status = {
18932                 .cookie = cookie,
18933                 .buf = buf,
18934                 .len = len,
18935                 .ack = ack
18936         };
18937
18938         nl80211_frame_tx_status(wdev, &status, gfp,
18939                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18940 }
18941 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18942
18943 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18944                                  struct cfg80211_tx_status *status, gfp_t gfp)
18945 {
18946         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18947 }
18948 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18949
18950 static int __nl80211_rx_control_port(struct net_device *dev,
18951                                      struct sk_buff *skb,
18952                                      bool unencrypted,
18953                                      int link_id,
18954                                      gfp_t gfp)
18955 {
18956         struct wireless_dev *wdev = dev->ieee80211_ptr;
18957         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18958         struct ethhdr *ehdr = eth_hdr(skb);
18959         const u8 *addr = ehdr->h_source;
18960         u16 proto = be16_to_cpu(skb->protocol);
18961         struct sk_buff *msg;
18962         void *hdr;
18963         struct nlattr *frame;
18964
18965         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18966
18967         if (!nlportid)
18968                 return -ENOENT;
18969
18970         msg = nlmsg_new(100 + skb->len, gfp);
18971         if (!msg)
18972                 return -ENOMEM;
18973
18974         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18975         if (!hdr) {
18976                 nlmsg_free(msg);
18977                 return -ENOBUFS;
18978         }
18979
18980         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18981             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18982             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18983                               NL80211_ATTR_PAD) ||
18984             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18985             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18986             (link_id >= 0 &&
18987              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
18988             (unencrypted && nla_put_flag(msg,
18989                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18990                 goto nla_put_failure;
18991
18992         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18993         if (!frame)
18994                 goto nla_put_failure;
18995
18996         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18997         genlmsg_end(msg, hdr);
18998
18999         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19000
19001  nla_put_failure:
19002         nlmsg_free(msg);
19003         return -ENOBUFS;
19004 }
19005
19006 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19007                               bool unencrypted, int link_id)
19008 {
19009         int ret;
19010
19011         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19012         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19013                                         GFP_ATOMIC);
19014         trace_cfg80211_return_bool(ret == 0);
19015         return ret == 0;
19016 }
19017 EXPORT_SYMBOL(cfg80211_rx_control_port);
19018
19019 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19020                                             const char *mac, gfp_t gfp)
19021 {
19022         struct wireless_dev *wdev = dev->ieee80211_ptr;
19023         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19024         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19025         void **cb;
19026
19027         if (!msg)
19028                 return NULL;
19029
19030         cb = (void **)msg->cb;
19031
19032         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19033         if (!cb[0]) {
19034                 nlmsg_free(msg);
19035                 return NULL;
19036         }
19037
19038         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19039             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19040                 goto nla_put_failure;
19041
19042         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19043                 goto nla_put_failure;
19044
19045         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19046         if (!cb[1])
19047                 goto nla_put_failure;
19048
19049         cb[2] = rdev;
19050
19051         return msg;
19052  nla_put_failure:
19053         nlmsg_free(msg);
19054         return NULL;
19055 }
19056
19057 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19058 {
19059         void **cb = (void **)msg->cb;
19060         struct cfg80211_registered_device *rdev = cb[2];
19061
19062         nla_nest_end(msg, cb[1]);
19063         genlmsg_end(msg, cb[0]);
19064
19065         memset(msg->cb, 0, sizeof(msg->cb));
19066
19067         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19068                                 NL80211_MCGRP_MLME, gfp);
19069 }
19070
19071 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19072                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19073                               s32 rssi_level, gfp_t gfp)
19074 {
19075         struct sk_buff *msg;
19076         struct wireless_dev *wdev = dev->ieee80211_ptr;
19077         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19078
19079         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19080
19081         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19082                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19083                 return;
19084
19085         if (wdev->cqm_config) {
19086                 wdev->cqm_config->last_rssi_event_value = rssi_level;
19087
19088                 cfg80211_cqm_rssi_update(rdev, dev);
19089
19090                 if (rssi_level == 0)
19091                         rssi_level = wdev->cqm_config->last_rssi_event_value;
19092         }
19093
19094         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19095         if (!msg)
19096                 return;
19097
19098         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19099                         rssi_event))
19100                 goto nla_put_failure;
19101
19102         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19103                                       rssi_level))
19104                 goto nla_put_failure;
19105
19106         cfg80211_send_cqm(msg, gfp);
19107
19108         return;
19109
19110  nla_put_failure:
19111         nlmsg_free(msg);
19112 }
19113 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19114
19115 void cfg80211_cqm_txe_notify(struct net_device *dev,
19116                              const u8 *peer, u32 num_packets,
19117                              u32 rate, u32 intvl, gfp_t gfp)
19118 {
19119         struct sk_buff *msg;
19120
19121         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19122         if (!msg)
19123                 return;
19124
19125         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19126                 goto nla_put_failure;
19127
19128         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19129                 goto nla_put_failure;
19130
19131         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19132                 goto nla_put_failure;
19133
19134         cfg80211_send_cqm(msg, gfp);
19135         return;
19136
19137  nla_put_failure:
19138         nlmsg_free(msg);
19139 }
19140 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19141
19142 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19143                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19144 {
19145         struct sk_buff *msg;
19146
19147         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19148
19149         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19150         if (!msg)
19151                 return;
19152
19153         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19154                 goto nla_put_failure;
19155
19156         cfg80211_send_cqm(msg, gfp);
19157         return;
19158
19159  nla_put_failure:
19160         nlmsg_free(msg);
19161 }
19162 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19163
19164 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19165 {
19166         struct sk_buff *msg;
19167
19168         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19169         if (!msg)
19170                 return;
19171
19172         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19173                 goto nla_put_failure;
19174
19175         cfg80211_send_cqm(msg, gfp);
19176         return;
19177
19178  nla_put_failure:
19179         nlmsg_free(msg);
19180 }
19181 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19182
19183 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19184                                      struct net_device *netdev, const u8 *bssid,
19185                                      const u8 *replay_ctr, gfp_t gfp)
19186 {
19187         struct sk_buff *msg;
19188         struct nlattr *rekey_attr;
19189         void *hdr;
19190
19191         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19192         if (!msg)
19193                 return;
19194
19195         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19196         if (!hdr) {
19197                 nlmsg_free(msg);
19198                 return;
19199         }
19200
19201         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19202             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19203             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19204                 goto nla_put_failure;
19205
19206         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19207         if (!rekey_attr)
19208                 goto nla_put_failure;
19209
19210         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19211                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19212                 goto nla_put_failure;
19213
19214         nla_nest_end(msg, rekey_attr);
19215
19216         genlmsg_end(msg, hdr);
19217
19218         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19219                                 NL80211_MCGRP_MLME, gfp);
19220         return;
19221
19222  nla_put_failure:
19223         nlmsg_free(msg);
19224 }
19225
19226 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19227                                const u8 *replay_ctr, gfp_t gfp)
19228 {
19229         struct wireless_dev *wdev = dev->ieee80211_ptr;
19230         struct wiphy *wiphy = wdev->wiphy;
19231         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19232
19233         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19234         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19235 }
19236 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19237
19238 static void
19239 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19240                                struct net_device *netdev, int index,
19241                                const u8 *bssid, bool preauth, gfp_t gfp)
19242 {
19243         struct sk_buff *msg;
19244         struct nlattr *attr;
19245         void *hdr;
19246
19247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19248         if (!msg)
19249                 return;
19250
19251         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19252         if (!hdr) {
19253                 nlmsg_free(msg);
19254                 return;
19255         }
19256
19257         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19258             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19259                 goto nla_put_failure;
19260
19261         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19262         if (!attr)
19263                 goto nla_put_failure;
19264
19265         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19266             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19267             (preauth &&
19268              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19269                 goto nla_put_failure;
19270
19271         nla_nest_end(msg, attr);
19272
19273         genlmsg_end(msg, hdr);
19274
19275         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19276                                 NL80211_MCGRP_MLME, gfp);
19277         return;
19278
19279  nla_put_failure:
19280         nlmsg_free(msg);
19281 }
19282
19283 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19284                                      const u8 *bssid, bool preauth, gfp_t gfp)
19285 {
19286         struct wireless_dev *wdev = dev->ieee80211_ptr;
19287         struct wiphy *wiphy = wdev->wiphy;
19288         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19289
19290         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19291         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19292 }
19293 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19294
19295 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19296                                      struct net_device *netdev,
19297                                      unsigned int link_id,
19298                                      struct cfg80211_chan_def *chandef,
19299                                      gfp_t gfp,
19300                                      enum nl80211_commands notif,
19301                                      u8 count, bool quiet, u16 punct_bitmap)
19302 {
19303         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19304         struct sk_buff *msg;
19305         void *hdr;
19306
19307         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19308         if (!msg)
19309                 return;
19310
19311         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19312         if (!hdr) {
19313                 nlmsg_free(msg);
19314                 return;
19315         }
19316
19317         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19318                 goto nla_put_failure;
19319
19320         if (wdev->valid_links &&
19321             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19322                 goto nla_put_failure;
19323
19324         if (nl80211_send_chandef(msg, chandef))
19325                 goto nla_put_failure;
19326
19327         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19328                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19329                         goto nla_put_failure;
19330                 if (quiet &&
19331                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19332                         goto nla_put_failure;
19333         }
19334
19335         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19336                 goto nla_put_failure;
19337
19338         genlmsg_end(msg, hdr);
19339
19340         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19341                                 NL80211_MCGRP_MLME, gfp);
19342         return;
19343
19344  nla_put_failure:
19345         nlmsg_free(msg);
19346 }
19347
19348 void cfg80211_ch_switch_notify(struct net_device *dev,
19349                                struct cfg80211_chan_def *chandef,
19350                                unsigned int link_id, u16 punct_bitmap)
19351 {
19352         struct wireless_dev *wdev = dev->ieee80211_ptr;
19353         struct wiphy *wiphy = wdev->wiphy;
19354         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19355
19356         ASSERT_WDEV_LOCK(wdev);
19357         WARN_INVALID_LINK_ID(wdev, link_id);
19358
19359         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19360
19361         switch (wdev->iftype) {
19362         case NL80211_IFTYPE_STATION:
19363         case NL80211_IFTYPE_P2P_CLIENT:
19364                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19365                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19366                                                         chandef->chan);
19367                 break;
19368         case NL80211_IFTYPE_MESH_POINT:
19369                 wdev->u.mesh.chandef = *chandef;
19370                 wdev->u.mesh.preset_chandef = *chandef;
19371                 break;
19372         case NL80211_IFTYPE_AP:
19373         case NL80211_IFTYPE_P2P_GO:
19374                 wdev->links[link_id].ap.chandef = *chandef;
19375                 break;
19376         case NL80211_IFTYPE_ADHOC:
19377                 wdev->u.ibss.chandef = *chandef;
19378                 break;
19379         default:
19380                 WARN_ON(1);
19381                 break;
19382         }
19383
19384         cfg80211_sched_dfs_chan_update(rdev);
19385
19386         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19387                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19388                                  punct_bitmap);
19389 }
19390 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19391
19392 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19393                                        struct cfg80211_chan_def *chandef,
19394                                        unsigned int link_id, u8 count,
19395                                        bool quiet, u16 punct_bitmap)
19396 {
19397         struct wireless_dev *wdev = dev->ieee80211_ptr;
19398         struct wiphy *wiphy = wdev->wiphy;
19399         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19400
19401         ASSERT_WDEV_LOCK(wdev);
19402         WARN_INVALID_LINK_ID(wdev, link_id);
19403
19404         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19405                                                 punct_bitmap);
19406
19407
19408         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19409                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19410                                  count, quiet, punct_bitmap);
19411 }
19412 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19413
19414 int cfg80211_bss_color_notify(struct net_device *dev,
19415                               enum nl80211_commands cmd, u8 count,
19416                               u64 color_bitmap)
19417 {
19418         struct wireless_dev *wdev = dev->ieee80211_ptr;
19419         struct wiphy *wiphy = wdev->wiphy;
19420         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19421         struct sk_buff *msg;
19422         void *hdr;
19423
19424         ASSERT_WDEV_LOCK(wdev);
19425
19426         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19427
19428         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19429         if (!msg)
19430                 return -ENOMEM;
19431
19432         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19433         if (!hdr)
19434                 goto nla_put_failure;
19435
19436         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19437                 goto nla_put_failure;
19438
19439         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19440             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19441                 goto nla_put_failure;
19442
19443         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19444             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19445                               color_bitmap, NL80211_ATTR_PAD))
19446                 goto nla_put_failure;
19447
19448         genlmsg_end(msg, hdr);
19449
19450         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19451                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19452
19453 nla_put_failure:
19454         nlmsg_free(msg);
19455         return -EINVAL;
19456 }
19457 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19458
19459 void
19460 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19461                      const struct cfg80211_chan_def *chandef,
19462                      enum nl80211_radar_event event,
19463                      struct net_device *netdev, gfp_t gfp)
19464 {
19465         struct sk_buff *msg;
19466         void *hdr;
19467
19468         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19469         if (!msg)
19470                 return;
19471
19472         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19473         if (!hdr) {
19474                 nlmsg_free(msg);
19475                 return;
19476         }
19477
19478         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19479                 goto nla_put_failure;
19480
19481         /* NOP and radar events don't need a netdev parameter */
19482         if (netdev) {
19483                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19484
19485                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19486                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19487                                       NL80211_ATTR_PAD))
19488                         goto nla_put_failure;
19489         }
19490
19491         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19492                 goto nla_put_failure;
19493
19494         if (nl80211_send_chandef(msg, chandef))
19495                 goto nla_put_failure;
19496
19497         genlmsg_end(msg, hdr);
19498
19499         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19500                                 NL80211_MCGRP_MLME, gfp);
19501         return;
19502
19503  nla_put_failure:
19504         nlmsg_free(msg);
19505 }
19506
19507 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19508                                        struct sta_opmode_info *sta_opmode,
19509                                        gfp_t gfp)
19510 {
19511         struct sk_buff *msg;
19512         struct wireless_dev *wdev = dev->ieee80211_ptr;
19513         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19514         void *hdr;
19515
19516         if (WARN_ON(!mac))
19517                 return;
19518
19519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19520         if (!msg)
19521                 return;
19522
19523         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19524         if (!hdr) {
19525                 nlmsg_free(msg);
19526                 return;
19527         }
19528
19529         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19530                 goto nla_put_failure;
19531
19532         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19533                 goto nla_put_failure;
19534
19535         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19536                 goto nla_put_failure;
19537
19538         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19539             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19540                 goto nla_put_failure;
19541
19542         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19543             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19544                 goto nla_put_failure;
19545
19546         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19547             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19548                 goto nla_put_failure;
19549
19550         genlmsg_end(msg, hdr);
19551
19552         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19553                                 NL80211_MCGRP_MLME, gfp);
19554
19555         return;
19556
19557 nla_put_failure:
19558         nlmsg_free(msg);
19559 }
19560 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19561
19562 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19563                            u64 cookie, bool acked, s32 ack_signal,
19564                            bool is_valid_ack_signal, gfp_t gfp)
19565 {
19566         struct wireless_dev *wdev = dev->ieee80211_ptr;
19567         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19568         struct sk_buff *msg;
19569         void *hdr;
19570
19571         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19572
19573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19574
19575         if (!msg)
19576                 return;
19577
19578         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19579         if (!hdr) {
19580                 nlmsg_free(msg);
19581                 return;
19582         }
19583
19584         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19585             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19586             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19587             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19588                               NL80211_ATTR_PAD) ||
19589             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19590             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19591                                                 ack_signal)))
19592                 goto nla_put_failure;
19593
19594         genlmsg_end(msg, hdr);
19595
19596         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19597                                 NL80211_MCGRP_MLME, gfp);
19598         return;
19599
19600  nla_put_failure:
19601         nlmsg_free(msg);
19602 }
19603 EXPORT_SYMBOL(cfg80211_probe_status);
19604
19605 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19606                                      size_t len, int freq, int sig_dbm)
19607 {
19608         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19609         struct sk_buff *msg;
19610         void *hdr;
19611         struct cfg80211_beacon_registration *reg;
19612
19613         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19614
19615         spin_lock_bh(&rdev->beacon_registrations_lock);
19616         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19617                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19618                 if (!msg) {
19619                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19620                         return;
19621                 }
19622
19623                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19624                 if (!hdr)
19625                         goto nla_put_failure;
19626
19627                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19628                     (freq &&
19629                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19630                                   KHZ_TO_MHZ(freq)) ||
19631                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19632                                   freq % 1000))) ||
19633                     (sig_dbm &&
19634                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19635                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19636                         goto nla_put_failure;
19637
19638                 genlmsg_end(msg, hdr);
19639
19640                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19641         }
19642         spin_unlock_bh(&rdev->beacon_registrations_lock);
19643         return;
19644
19645  nla_put_failure:
19646         spin_unlock_bh(&rdev->beacon_registrations_lock);
19647         nlmsg_free(msg);
19648 }
19649 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19650
19651 #ifdef CONFIG_PM
19652 static int cfg80211_net_detect_results(struct sk_buff *msg,
19653                                        struct cfg80211_wowlan_wakeup *wakeup)
19654 {
19655         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19656         struct nlattr *nl_results, *nl_match, *nl_freqs;
19657         int i, j;
19658
19659         nl_results = nla_nest_start_noflag(msg,
19660                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19661         if (!nl_results)
19662                 return -EMSGSIZE;
19663
19664         for (i = 0; i < nd->n_matches; i++) {
19665                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19666
19667                 nl_match = nla_nest_start_noflag(msg, i);
19668                 if (!nl_match)
19669                         break;
19670
19671                 /* The SSID attribute is optional in nl80211, but for
19672                  * simplicity reasons it's always present in the
19673                  * cfg80211 structure.  If a driver can't pass the
19674                  * SSID, that needs to be changed.  A zero length SSID
19675                  * is still a valid SSID (wildcard), so it cannot be
19676                  * used for this purpose.
19677                  */
19678                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19679                             match->ssid.ssid)) {
19680                         nla_nest_cancel(msg, nl_match);
19681                         goto out;
19682                 }
19683
19684                 if (match->n_channels) {
19685                         nl_freqs = nla_nest_start_noflag(msg,
19686                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19687                         if (!nl_freqs) {
19688                                 nla_nest_cancel(msg, nl_match);
19689                                 goto out;
19690                         }
19691
19692                         for (j = 0; j < match->n_channels; j++) {
19693                                 if (nla_put_u32(msg, j, match->channels[j])) {
19694                                         nla_nest_cancel(msg, nl_freqs);
19695                                         nla_nest_cancel(msg, nl_match);
19696                                         goto out;
19697                                 }
19698                         }
19699
19700                         nla_nest_end(msg, nl_freqs);
19701                 }
19702
19703                 nla_nest_end(msg, nl_match);
19704         }
19705
19706 out:
19707         nla_nest_end(msg, nl_results);
19708         return 0;
19709 }
19710
19711 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19712                                    struct cfg80211_wowlan_wakeup *wakeup,
19713                                    gfp_t gfp)
19714 {
19715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19716         struct sk_buff *msg;
19717         void *hdr;
19718         int size = 200;
19719
19720         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19721
19722         if (wakeup)
19723                 size += wakeup->packet_present_len;
19724
19725         msg = nlmsg_new(size, gfp);
19726         if (!msg)
19727                 return;
19728
19729         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19730         if (!hdr)
19731                 goto free_msg;
19732
19733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19734             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19735                               NL80211_ATTR_PAD))
19736                 goto free_msg;
19737
19738         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19739                                         wdev->netdev->ifindex))
19740                 goto free_msg;
19741
19742         if (wakeup) {
19743                 struct nlattr *reasons;
19744
19745                 reasons = nla_nest_start_noflag(msg,
19746                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19747                 if (!reasons)
19748                         goto free_msg;
19749
19750                 if (wakeup->disconnect &&
19751                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19752                         goto free_msg;
19753                 if (wakeup->magic_pkt &&
19754                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19755                         goto free_msg;
19756                 if (wakeup->gtk_rekey_failure &&
19757                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19758                         goto free_msg;
19759                 if (wakeup->eap_identity_req &&
19760                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19761                         goto free_msg;
19762                 if (wakeup->four_way_handshake &&
19763                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19764                         goto free_msg;
19765                 if (wakeup->rfkill_release &&
19766                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19767                         goto free_msg;
19768
19769                 if (wakeup->pattern_idx >= 0 &&
19770                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19771                                 wakeup->pattern_idx))
19772                         goto free_msg;
19773
19774                 if (wakeup->tcp_match &&
19775                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19776                         goto free_msg;
19777
19778                 if (wakeup->tcp_connlost &&
19779                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19780                         goto free_msg;
19781
19782                 if (wakeup->tcp_nomoretokens &&
19783                     nla_put_flag(msg,
19784                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19785                         goto free_msg;
19786
19787                 if (wakeup->packet) {
19788                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19789                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19790
19791                         if (!wakeup->packet_80211) {
19792                                 pkt_attr =
19793                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19794                                 len_attr =
19795                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19796                         }
19797
19798                         if (wakeup->packet_len &&
19799                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19800                                 goto free_msg;
19801
19802                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19803                                     wakeup->packet))
19804                                 goto free_msg;
19805                 }
19806
19807                 if (wakeup->net_detect &&
19808                     cfg80211_net_detect_results(msg, wakeup))
19809                                 goto free_msg;
19810
19811                 nla_nest_end(msg, reasons);
19812         }
19813
19814         genlmsg_end(msg, hdr);
19815
19816         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19817                                 NL80211_MCGRP_MLME, gfp);
19818         return;
19819
19820  free_msg:
19821         nlmsg_free(msg);
19822 }
19823 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19824 #endif
19825
19826 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19827                                 enum nl80211_tdls_operation oper,
19828                                 u16 reason_code, gfp_t gfp)
19829 {
19830         struct wireless_dev *wdev = dev->ieee80211_ptr;
19831         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19832         struct sk_buff *msg;
19833         void *hdr;
19834
19835         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19836                                          reason_code);
19837
19838         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19839         if (!msg)
19840                 return;
19841
19842         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19843         if (!hdr) {
19844                 nlmsg_free(msg);
19845                 return;
19846         }
19847
19848         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19849             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19850             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19851             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19852             (reason_code > 0 &&
19853              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19854                 goto nla_put_failure;
19855
19856         genlmsg_end(msg, hdr);
19857
19858         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19859                                 NL80211_MCGRP_MLME, gfp);
19860         return;
19861
19862  nla_put_failure:
19863         nlmsg_free(msg);
19864 }
19865 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19866
19867 static int nl80211_netlink_notify(struct notifier_block * nb,
19868                                   unsigned long state,
19869                                   void *_notify)
19870 {
19871         struct netlink_notify *notify = _notify;
19872         struct cfg80211_registered_device *rdev;
19873         struct wireless_dev *wdev;
19874         struct cfg80211_beacon_registration *reg, *tmp;
19875
19876         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19877                 return NOTIFY_DONE;
19878
19879         rcu_read_lock();
19880
19881         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19882                 struct cfg80211_sched_scan_request *sched_scan_req;
19883
19884                 list_for_each_entry_rcu(sched_scan_req,
19885                                         &rdev->sched_scan_req_list,
19886                                         list) {
19887                         if (sched_scan_req->owner_nlportid == notify->portid) {
19888                                 sched_scan_req->nl_owner_dead = true;
19889                                 wiphy_work_queue(&rdev->wiphy,
19890                                                  &rdev->sched_scan_stop_wk);
19891                         }
19892                 }
19893
19894                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19895                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19896
19897                         if (wdev->owner_nlportid == notify->portid) {
19898                                 wdev->nl_owner_dead = true;
19899                                 schedule_work(&rdev->destroy_work);
19900                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19901                                 schedule_work(&wdev->disconnect_wk);
19902                         }
19903
19904                         cfg80211_release_pmsr(wdev, notify->portid);
19905                 }
19906
19907                 spin_lock_bh(&rdev->beacon_registrations_lock);
19908                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19909                                          list) {
19910                         if (reg->nlportid == notify->portid) {
19911                                 list_del(&reg->list);
19912                                 kfree(reg);
19913                                 break;
19914                         }
19915                 }
19916                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19917         }
19918
19919         rcu_read_unlock();
19920
19921         /*
19922          * It is possible that the user space process that is controlling the
19923          * indoor setting disappeared, so notify the regulatory core.
19924          */
19925         regulatory_netlink_notify(notify->portid);
19926         return NOTIFY_OK;
19927 }
19928
19929 static struct notifier_block nl80211_netlink_notifier = {
19930         .notifier_call = nl80211_netlink_notify,
19931 };
19932
19933 void cfg80211_ft_event(struct net_device *netdev,
19934                        struct cfg80211_ft_event_params *ft_event)
19935 {
19936         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19937         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19938         struct sk_buff *msg;
19939         void *hdr;
19940
19941         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19942
19943         if (!ft_event->target_ap)
19944                 return;
19945
19946         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19947                         GFP_KERNEL);
19948         if (!msg)
19949                 return;
19950
19951         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19952         if (!hdr)
19953                 goto out;
19954
19955         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19956             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19957             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19958                 goto out;
19959
19960         if (ft_event->ies &&
19961             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19962                 goto out;
19963         if (ft_event->ric_ies &&
19964             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19965                     ft_event->ric_ies))
19966                 goto out;
19967
19968         genlmsg_end(msg, hdr);
19969
19970         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19971                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19972         return;
19973  out:
19974         nlmsg_free(msg);
19975 }
19976 EXPORT_SYMBOL(cfg80211_ft_event);
19977
19978 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19979 {
19980         struct cfg80211_registered_device *rdev;
19981         struct sk_buff *msg;
19982         void *hdr;
19983         u32 nlportid;
19984
19985         rdev = wiphy_to_rdev(wdev->wiphy);
19986         if (!rdev->crit_proto_nlportid)
19987                 return;
19988
19989         nlportid = rdev->crit_proto_nlportid;
19990         rdev->crit_proto_nlportid = 0;
19991
19992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19993         if (!msg)
19994                 return;
19995
19996         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19997         if (!hdr)
19998                 goto nla_put_failure;
19999
20000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20001             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20002                               NL80211_ATTR_PAD))
20003                 goto nla_put_failure;
20004
20005         genlmsg_end(msg, hdr);
20006
20007         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20008         return;
20009
20010  nla_put_failure:
20011         nlmsg_free(msg);
20012 }
20013 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20014
20015 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20016 {
20017         struct wiphy *wiphy = wdev->wiphy;
20018         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20019         struct sk_buff *msg;
20020         void *hdr;
20021
20022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20023         if (!msg)
20024                 return;
20025
20026         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20027         if (!hdr)
20028                 goto out;
20029
20030         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20031             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20032             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20033                               NL80211_ATTR_PAD) ||
20034             (wdev->valid_links &&
20035              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20036                 goto out;
20037
20038         genlmsg_end(msg, hdr);
20039
20040         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20041                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20042         return;
20043  out:
20044         nlmsg_free(msg);
20045 }
20046
20047 int cfg80211_external_auth_request(struct net_device *dev,
20048                                    struct cfg80211_external_auth_params *params,
20049                                    gfp_t gfp)
20050 {
20051         struct wireless_dev *wdev = dev->ieee80211_ptr;
20052         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20053         struct sk_buff *msg;
20054         void *hdr;
20055
20056         if (!wdev->conn_owner_nlportid)
20057                 return -EINVAL;
20058
20059         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20060         if (!msg)
20061                 return -ENOMEM;
20062
20063         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20064         if (!hdr)
20065                 goto nla_put_failure;
20066
20067         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20068             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20069             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20070             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20071                         params->action) ||
20072             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20073             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20074                     params->ssid.ssid) ||
20075             (!is_zero_ether_addr(params->mld_addr) &&
20076              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20077                 goto nla_put_failure;
20078
20079         genlmsg_end(msg, hdr);
20080         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20081                         wdev->conn_owner_nlportid);
20082         return 0;
20083
20084  nla_put_failure:
20085         nlmsg_free(msg);
20086         return -ENOBUFS;
20087 }
20088 EXPORT_SYMBOL(cfg80211_external_auth_request);
20089
20090 void cfg80211_update_owe_info_event(struct net_device *netdev,
20091                                     struct cfg80211_update_owe_info *owe_info,
20092                                     gfp_t gfp)
20093 {
20094         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20095         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20096         struct sk_buff *msg;
20097         void *hdr;
20098
20099         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20100
20101         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20102         if (!msg)
20103                 return;
20104
20105         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20106         if (!hdr)
20107                 goto nla_put_failure;
20108
20109         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20110             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20111             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20112                 goto nla_put_failure;
20113
20114         if (!owe_info->ie_len ||
20115             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20116                 goto nla_put_failure;
20117
20118         if (owe_info->assoc_link_id != -1) {
20119                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20120                                owe_info->assoc_link_id))
20121                         goto nla_put_failure;
20122
20123                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20124                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20125                             owe_info->peer_mld_addr))
20126                         goto nla_put_failure;
20127         }
20128
20129         genlmsg_end(msg, hdr);
20130
20131         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20132                                 NL80211_MCGRP_MLME, gfp);
20133         return;
20134
20135 nla_put_failure:
20136         genlmsg_cancel(msg, hdr);
20137         nlmsg_free(msg);
20138 }
20139 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20140
20141 /* initialisation/exit functions */
20142
20143 int __init nl80211_init(void)
20144 {
20145         int err;
20146
20147         err = genl_register_family(&nl80211_fam);
20148         if (err)
20149                 return err;
20150
20151         err = netlink_register_notifier(&nl80211_netlink_notifier);
20152         if (err)
20153                 goto err_out;
20154
20155         return 0;
20156  err_out:
20157         genl_unregister_family(&nl80211_fam);
20158         return err;
20159 }
20160
20161 void nl80211_exit(void)
20162 {
20163         netlink_unregister_notifier(&nl80211_netlink_notifier);
20164         genl_unregister_family(&nl80211_fam);
20165 }