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
4893         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4894                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4895                 i++;
4896         }
4897
4898         acl->n_acl_entries = n_entries;
4899         acl->acl_policy = acl_policy;
4900
4901         return acl;
4902 }
4903
4904 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4905 {
4906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4907         struct net_device *dev = info->user_ptr[1];
4908         struct cfg80211_acl_data *acl;
4909         int err;
4910
4911         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4912             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4913                 return -EOPNOTSUPP;
4914
4915         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4916                 return -EINVAL;
4917
4918         acl = parse_acl_data(&rdev->wiphy, info);
4919         if (IS_ERR(acl))
4920                 return PTR_ERR(acl);
4921
4922         err = rdev_set_mac_acl(rdev, dev, acl);
4923
4924         kfree(acl);
4925
4926         return err;
4927 }
4928
4929 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4930                            u8 *rates, u8 rates_len)
4931 {
4932         u8 i;
4933         u32 mask = 0;
4934
4935         for (i = 0; i < rates_len; i++) {
4936                 int rate = (rates[i] & 0x7f) * 5;
4937                 int ridx;
4938
4939                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4940                         struct ieee80211_rate *srate =
4941                                 &sband->bitrates[ridx];
4942                         if (rate == srate->bitrate) {
4943                                 mask |= 1 << ridx;
4944                                 break;
4945                         }
4946                 }
4947                 if (ridx == sband->n_bitrates)
4948                         return 0; /* rate not found */
4949         }
4950
4951         return mask;
4952 }
4953
4954 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4955                                u8 *rates, u8 rates_len,
4956                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4957 {
4958         u8 i;
4959
4960         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4961
4962         for (i = 0; i < rates_len; i++) {
4963                 int ridx, rbit;
4964
4965                 ridx = rates[i] / 8;
4966                 rbit = BIT(rates[i] % 8);
4967
4968                 /* check validity */
4969                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4970                         return false;
4971
4972                 /* check availability */
4973                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4974                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4975                         mcs[ridx] |= rbit;
4976                 else
4977                         return false;
4978         }
4979
4980         return true;
4981 }
4982
4983 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4984 {
4985         u16 mcs_mask = 0;
4986
4987         switch (vht_mcs_map) {
4988         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4989                 break;
4990         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4991                 mcs_mask = 0x00FF;
4992                 break;
4993         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4994                 mcs_mask = 0x01FF;
4995                 break;
4996         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4997                 mcs_mask = 0x03FF;
4998                 break;
4999         default:
5000                 break;
5001         }
5002
5003         return mcs_mask;
5004 }
5005
5006 static void vht_build_mcs_mask(u16 vht_mcs_map,
5007                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
5008 {
5009         u8 nss;
5010
5011         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
5012                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
5013                 vht_mcs_map >>= 2;
5014         }
5015 }
5016
5017 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5018                              struct nl80211_txrate_vht *txrate,
5019                              u16 mcs[NL80211_VHT_NSS_MAX])
5020 {
5021         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5022         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5023         u8 i;
5024
5025         if (!sband->vht_cap.vht_supported)
5026                 return false;
5027
5028         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5029
5030         /* Build vht_mcs_mask from VHT capabilities */
5031         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5032
5033         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5034                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5035                         mcs[i] = txrate->mcs[i];
5036                 else
5037                         return false;
5038         }
5039
5040         return true;
5041 }
5042
5043 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5044 {
5045         switch (he_mcs_map) {
5046         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5047                 return 0;
5048         case IEEE80211_HE_MCS_SUPPORT_0_7:
5049                 return 0x00FF;
5050         case IEEE80211_HE_MCS_SUPPORT_0_9:
5051                 return 0x03FF;
5052         case IEEE80211_HE_MCS_SUPPORT_0_11:
5053                 return 0xFFF;
5054         default:
5055                 break;
5056         }
5057         return 0;
5058 }
5059
5060 static void he_build_mcs_mask(u16 he_mcs_map,
5061                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5062 {
5063         u8 nss;
5064
5065         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5066                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5067                 he_mcs_map >>= 2;
5068         }
5069 }
5070
5071 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5072                            const struct ieee80211_sta_he_cap *he_cap)
5073 {
5074         struct net_device *dev = info->user_ptr[1];
5075         struct wireless_dev *wdev = dev->ieee80211_ptr;
5076         struct cfg80211_chan_def *chandef;
5077         __le16 tx_mcs;
5078
5079         chandef = wdev_chandef(wdev, link_id);
5080         if (!chandef) {
5081                 /*
5082                  * This is probably broken, but we never maintained
5083                  * a chandef in these cases, so it always was.
5084                  */
5085                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5086         }
5087
5088         switch (chandef->width) {
5089         case NL80211_CHAN_WIDTH_80P80:
5090                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5091                 break;
5092         case NL80211_CHAN_WIDTH_160:
5093                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5094                 break;
5095         default:
5096                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5097                 break;
5098         }
5099
5100         return le16_to_cpu(tx_mcs);
5101 }
5102
5103 static bool he_set_mcs_mask(struct genl_info *info,
5104                             struct wireless_dev *wdev,
5105                             struct ieee80211_supported_band *sband,
5106                             struct nl80211_txrate_he *txrate,
5107                             u16 mcs[NL80211_HE_NSS_MAX],
5108                             unsigned int link_id)
5109 {
5110         const struct ieee80211_sta_he_cap *he_cap;
5111         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5112         u16 tx_mcs_map = 0;
5113         u8 i;
5114
5115         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5116         if (!he_cap)
5117                 return false;
5118
5119         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5120
5121         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5122
5123         /* Build he_mcs_mask from HE capabilities */
5124         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5125
5126         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5127                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5128                         mcs[i] = txrate->mcs[i];
5129                 else
5130                         return false;
5131         }
5132
5133         return true;
5134 }
5135
5136 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5137                                          struct nlattr *attrs[],
5138                                          enum nl80211_attrs attr,
5139                                          struct cfg80211_bitrate_mask *mask,
5140                                          struct net_device *dev,
5141                                          bool default_all_enabled,
5142                                          unsigned int link_id)
5143 {
5144         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5146         struct wireless_dev *wdev = dev->ieee80211_ptr;
5147         int rem, i;
5148         struct nlattr *tx_rates;
5149         struct ieee80211_supported_band *sband;
5150         u16 vht_tx_mcs_map, he_tx_mcs_map;
5151
5152         memset(mask, 0, sizeof(*mask));
5153         /* Default to all rates enabled */
5154         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5155                 const struct ieee80211_sta_he_cap *he_cap;
5156
5157                 if (!default_all_enabled)
5158                         break;
5159
5160                 sband = rdev->wiphy.bands[i];
5161
5162                 if (!sband)
5163                         continue;
5164
5165                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5166                 memcpy(mask->control[i].ht_mcs,
5167                        sband->ht_cap.mcs.rx_mask,
5168                        sizeof(mask->control[i].ht_mcs));
5169
5170                 if (sband->vht_cap.vht_supported) {
5171                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5172                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5173                 }
5174
5175                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5176                 if (!he_cap)
5177                         continue;
5178
5179                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5180                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5181
5182                 mask->control[i].he_gi = 0xFF;
5183                 mask->control[i].he_ltf = 0xFF;
5184         }
5185
5186         /* if no rates are given set it back to the defaults */
5187         if (!attrs[attr])
5188                 goto out;
5189
5190         /* The nested attribute uses enum nl80211_band as the index. This maps
5191          * directly to the enum nl80211_band values used in cfg80211.
5192          */
5193         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5194         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5195                 enum nl80211_band band = nla_type(tx_rates);
5196                 int err;
5197
5198                 if (band < 0 || band >= NUM_NL80211_BANDS)
5199                         return -EINVAL;
5200                 sband = rdev->wiphy.bands[band];
5201                 if (sband == NULL)
5202                         return -EINVAL;
5203                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5204                                                   tx_rates,
5205                                                   nl80211_txattr_policy,
5206                                                   info->extack);
5207                 if (err)
5208                         return err;
5209                 if (tb[NL80211_TXRATE_LEGACY]) {
5210                         mask->control[band].legacy = rateset_to_mask(
5211                                 sband,
5212                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5213                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5214                         if ((mask->control[band].legacy == 0) &&
5215                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5216                                 return -EINVAL;
5217                 }
5218                 if (tb[NL80211_TXRATE_HT]) {
5219                         if (!ht_rateset_to_mask(
5220                                         sband,
5221                                         nla_data(tb[NL80211_TXRATE_HT]),
5222                                         nla_len(tb[NL80211_TXRATE_HT]),
5223                                         mask->control[band].ht_mcs))
5224                                 return -EINVAL;
5225                 }
5226
5227                 if (tb[NL80211_TXRATE_VHT]) {
5228                         if (!vht_set_mcs_mask(
5229                                         sband,
5230                                         nla_data(tb[NL80211_TXRATE_VHT]),
5231                                         mask->control[band].vht_mcs))
5232                                 return -EINVAL;
5233                 }
5234
5235                 if (tb[NL80211_TXRATE_GI]) {
5236                         mask->control[band].gi =
5237                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5238                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5239                                 return -EINVAL;
5240                 }
5241                 if (tb[NL80211_TXRATE_HE] &&
5242                     !he_set_mcs_mask(info, wdev, sband,
5243                                      nla_data(tb[NL80211_TXRATE_HE]),
5244                                      mask->control[band].he_mcs,
5245                                      link_id))
5246                         return -EINVAL;
5247
5248                 if (tb[NL80211_TXRATE_HE_GI])
5249                         mask->control[band].he_gi =
5250                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5251                 if (tb[NL80211_TXRATE_HE_LTF])
5252                         mask->control[band].he_ltf =
5253                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5254
5255                 if (mask->control[band].legacy == 0) {
5256                         /* don't allow empty legacy rates if HT, VHT or HE
5257                          * are not even supported.
5258                          */
5259                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5260                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5261                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5262                                 return -EINVAL;
5263
5264                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5265                                 if (mask->control[band].ht_mcs[i])
5266                                         goto out;
5267
5268                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5269                                 if (mask->control[band].vht_mcs[i])
5270                                         goto out;
5271
5272                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5273                                 if (mask->control[band].he_mcs[i])
5274                                         goto out;
5275
5276                         /* legacy and mcs rates may not be both empty */
5277                         return -EINVAL;
5278                 }
5279         }
5280
5281 out:
5282         return 0;
5283 }
5284
5285 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5286                                    enum nl80211_band band,
5287                                    struct cfg80211_bitrate_mask *beacon_rate)
5288 {
5289         u32 count_ht, count_vht, count_he, i;
5290         u32 rate = beacon_rate->control[band].legacy;
5291
5292         /* Allow only one rate */
5293         if (hweight32(rate) > 1)
5294                 return -EINVAL;
5295
5296         count_ht = 0;
5297         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5298                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5299                         return -EINVAL;
5300                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5301                         count_ht++;
5302                         if (count_ht > 1)
5303                                 return -EINVAL;
5304                 }
5305                 if (count_ht && rate)
5306                         return -EINVAL;
5307         }
5308
5309         count_vht = 0;
5310         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5311                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5312                         return -EINVAL;
5313                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5314                         count_vht++;
5315                         if (count_vht > 1)
5316                                 return -EINVAL;
5317                 }
5318                 if (count_vht && rate)
5319                         return -EINVAL;
5320         }
5321
5322         count_he = 0;
5323         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5324                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5325                         return -EINVAL;
5326                 } else if (beacon_rate->control[band].he_mcs[i]) {
5327                         count_he++;
5328                         if (count_he > 1)
5329                                 return -EINVAL;
5330                 }
5331                 if (count_he && rate)
5332                         return -EINVAL;
5333         }
5334
5335         if ((count_ht && count_vht && count_he) ||
5336             (!rate && !count_ht && !count_vht && !count_he))
5337                 return -EINVAL;
5338
5339         if (rate &&
5340             !wiphy_ext_feature_isset(&rdev->wiphy,
5341                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5342                 return -EINVAL;
5343         if (count_ht &&
5344             !wiphy_ext_feature_isset(&rdev->wiphy,
5345                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5346                 return -EINVAL;
5347         if (count_vht &&
5348             !wiphy_ext_feature_isset(&rdev->wiphy,
5349                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5350                 return -EINVAL;
5351         if (count_he &&
5352             !wiphy_ext_feature_isset(&rdev->wiphy,
5353                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5354                 return -EINVAL;
5355
5356         return 0;
5357 }
5358
5359 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5360                                        struct net_device *dev,
5361                                        struct nlattr *attrs,
5362                                        struct cfg80211_mbssid_config *config,
5363                                        u8 num_elems)
5364 {
5365         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5366
5367         if (!wiphy->mbssid_max_interfaces)
5368                 return -EOPNOTSUPP;
5369
5370         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5371                              NULL) ||
5372             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5373                 return -EINVAL;
5374
5375         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5376         if (config->ema) {
5377                 if (!wiphy->ema_max_profile_periodicity)
5378                         return -EOPNOTSUPP;
5379
5380                 if (num_elems > wiphy->ema_max_profile_periodicity)
5381                         return -EINVAL;
5382         }
5383
5384         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5385         if (config->index >= wiphy->mbssid_max_interfaces ||
5386             (!config->index && !num_elems))
5387                 return -EINVAL;
5388
5389         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5390                 u32 tx_ifindex =
5391                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5392
5393                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5394                     (config->index && tx_ifindex == dev->ifindex))
5395                         return -EINVAL;
5396
5397                 if (tx_ifindex != dev->ifindex) {
5398                         struct net_device *tx_netdev =
5399                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5400
5401                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5402                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5403                             tx_netdev->ieee80211_ptr->iftype !=
5404                                                         NL80211_IFTYPE_AP) {
5405                                 dev_put(tx_netdev);
5406                                 return -EINVAL;
5407                         }
5408
5409                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5410                 } else {
5411                         config->tx_wdev = dev->ieee80211_ptr;
5412                 }
5413         } else if (!config->index) {
5414                 config->tx_wdev = dev->ieee80211_ptr;
5415         } else {
5416                 return -EINVAL;
5417         }
5418
5419         return 0;
5420 }
5421
5422 static struct cfg80211_mbssid_elems *
5423 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5424 {
5425         struct nlattr *nl_elems;
5426         struct cfg80211_mbssid_elems *elems;
5427         int rem_elems;
5428         u8 i = 0, num_elems = 0;
5429
5430         if (!wiphy->mbssid_max_interfaces)
5431                 return ERR_PTR(-EINVAL);
5432
5433         nla_for_each_nested(nl_elems, attrs, rem_elems)
5434                 num_elems++;
5435
5436         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5437         if (!elems)
5438                 return ERR_PTR(-ENOMEM);
5439
5440         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5441                 elems->elem[i].data = nla_data(nl_elems);
5442                 elems->elem[i].len = nla_len(nl_elems);
5443                 i++;
5444         }
5445         elems->cnt = num_elems;
5446         return elems;
5447 }
5448
5449 static struct cfg80211_rnr_elems *
5450 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5451                         struct netlink_ext_ack *extack)
5452 {
5453         struct nlattr *nl_elems;
5454         struct cfg80211_rnr_elems *elems;
5455         int rem_elems;
5456         u8 i = 0, num_elems = 0;
5457
5458         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5459                 int ret;
5460
5461                 ret = validate_ie_attr(nl_elems, extack);
5462                 if (ret)
5463                         return ERR_PTR(ret);
5464
5465                 num_elems++;
5466         }
5467
5468         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5469         if (!elems)
5470                 return ERR_PTR(-ENOMEM);
5471
5472         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5473                 elems->elem[i].data = nla_data(nl_elems);
5474                 elems->elem[i].len = nla_len(nl_elems);
5475                 i++;
5476         }
5477         elems->cnt = num_elems;
5478         return elems;
5479 }
5480
5481 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5482                                       struct cfg80211_he_bss_color *he_bss_color)
5483 {
5484         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5485         int err;
5486
5487         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5488                                he_bss_color_policy, NULL);
5489         if (err)
5490                 return err;
5491
5492         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5493                 return -EINVAL;
5494
5495         he_bss_color->color =
5496                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5497         he_bss_color->enabled =
5498                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5499         he_bss_color->partial =
5500                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5501
5502         return 0;
5503 }
5504
5505 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5506                                 struct nlattr *attrs[],
5507                                 struct cfg80211_beacon_data *bcn,
5508                                 struct netlink_ext_ack *extack)
5509 {
5510         bool haveinfo = false;
5511         int err;
5512
5513         memset(bcn, 0, sizeof(*bcn));
5514
5515         bcn->link_id = nl80211_link_id(attrs);
5516
5517         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5518                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5519                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5520                 if (!bcn->head_len)
5521                         return -EINVAL;
5522                 haveinfo = true;
5523         }
5524
5525         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5526                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5527                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5528                 haveinfo = true;
5529         }
5530
5531         if (!haveinfo)
5532                 return -EINVAL;
5533
5534         if (attrs[NL80211_ATTR_IE]) {
5535                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5536                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5537         }
5538
5539         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5540                 bcn->proberesp_ies =
5541                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5542                 bcn->proberesp_ies_len =
5543                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5544         }
5545
5546         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5547                 bcn->assocresp_ies =
5548                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5549                 bcn->assocresp_ies_len =
5550                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5551         }
5552
5553         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5554                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5555                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5556         }
5557
5558         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5559                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5560
5561                 err = nla_parse_nested_deprecated(tb,
5562                                                   NL80211_FTM_RESP_ATTR_MAX,
5563                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5564                                                   NULL, NULL);
5565                 if (err)
5566                         return err;
5567
5568                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5569                     wiphy_ext_feature_isset(&rdev->wiphy,
5570                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5571                         bcn->ftm_responder = 1;
5572                 else
5573                         return -EOPNOTSUPP;
5574
5575                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5576                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5577                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5578                 }
5579
5580                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5581                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5582                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5583                 }
5584         } else {
5585                 bcn->ftm_responder = -1;
5586         }
5587
5588         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5589                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5590                                                  &bcn->he_bss_color);
5591                 if (err)
5592                         return err;
5593                 bcn->he_bss_color_valid = true;
5594         }
5595
5596         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5597                 struct cfg80211_mbssid_elems *mbssid =
5598                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5599                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5600
5601                 if (IS_ERR(mbssid))
5602                         return PTR_ERR(mbssid);
5603
5604                 bcn->mbssid_ies = mbssid;
5605
5606                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5607                         struct cfg80211_rnr_elems *rnr =
5608                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5609                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5610                                                         extack);
5611
5612                         if (IS_ERR(rnr))
5613                                 return PTR_ERR(rnr);
5614
5615                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5616                                 return -EINVAL;
5617
5618                         bcn->rnr_ies = rnr;
5619                 }
5620         }
5621
5622         return 0;
5623 }
5624
5625 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5626                                     struct ieee80211_he_obss_pd *he_obss_pd)
5627 {
5628         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5629         int err;
5630
5631         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5632                                he_obss_pd_policy, NULL);
5633         if (err)
5634                 return err;
5635
5636         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5637                 return -EINVAL;
5638
5639         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5640
5641         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5642                 he_obss_pd->min_offset =
5643                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5644         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5645                 he_obss_pd->max_offset =
5646                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5647         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5648                 he_obss_pd->non_srg_max_offset =
5649                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5650
5651         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5652                 return -EINVAL;
5653
5654         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5655                 memcpy(he_obss_pd->bss_color_bitmap,
5656                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5657                        sizeof(he_obss_pd->bss_color_bitmap));
5658
5659         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5660                 memcpy(he_obss_pd->partial_bssid_bitmap,
5661                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5662                        sizeof(he_obss_pd->partial_bssid_bitmap));
5663
5664         he_obss_pd->enable = true;
5665
5666         return 0;
5667 }
5668
5669 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5670                                         struct nlattr *attrs,
5671                                         struct cfg80211_ap_settings *params)
5672 {
5673         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5674         int ret;
5675         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5676
5677         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5678                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5679                 return -EINVAL;
5680
5681         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5682                                NULL, NULL);
5683         if (ret)
5684                 return ret;
5685
5686         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5687             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5688             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5689                 return -EINVAL;
5690
5691         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5692         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5693         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5694         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5695
5696         return 0;
5697 }
5698
5699 static int
5700 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5701                                      struct nlattr *attrs,
5702                                      struct cfg80211_ap_settings *params)
5703 {
5704         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5705         int ret;
5706         struct cfg80211_unsol_bcast_probe_resp *presp =
5707                                         &params->unsol_bcast_probe_resp;
5708
5709         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5710                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5711                 return -EINVAL;
5712
5713         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5714                                attrs, NULL, NULL);
5715         if (ret)
5716                 return ret;
5717
5718         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5719             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5720                 return -EINVAL;
5721
5722         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5723         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5724         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5725         return 0;
5726 }
5727
5728 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5729                                             const struct element *rates)
5730 {
5731         int i;
5732
5733         if (!rates)
5734                 return;
5735
5736         for (i = 0; i < rates->datalen; i++) {
5737                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5738                         params->ht_required = true;
5739                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5740                         params->vht_required = true;
5741                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5742                         params->he_required = true;
5743                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5744                         params->sae_h2e_required = true;
5745         }
5746 }
5747
5748 /*
5749  * Since the nl80211 API didn't include, from the beginning, attributes about
5750  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5751  * benefit of drivers that rebuild IEs in the firmware.
5752  */
5753 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5754 {
5755         const struct cfg80211_beacon_data *bcn = &params->beacon;
5756         size_t ies_len = bcn->tail_len;
5757         const u8 *ies = bcn->tail;
5758         const struct element *rates;
5759         const struct element *cap;
5760
5761         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5762         nl80211_check_ap_rate_selectors(params, rates);
5763
5764         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5765         nl80211_check_ap_rate_selectors(params, rates);
5766
5767         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5768         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5769                 params->ht_cap = (void *)cap->data;
5770         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5771         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5772                 params->vht_cap = (void *)cap->data;
5773         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5774         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5775                 params->he_cap = (void *)(cap->data + 1);
5776         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5777         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5778                 params->he_oper = (void *)(cap->data + 1);
5779         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5780         if (cap) {
5781                 if (!cap->datalen)
5782                         return -EINVAL;
5783                 params->eht_cap = (void *)(cap->data + 1);
5784                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5785                                                 (const u8 *)params->eht_cap,
5786                                                 cap->datalen - 1, true))
5787                         return -EINVAL;
5788         }
5789         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5790         if (cap) {
5791                 if (!cap->datalen)
5792                         return -EINVAL;
5793                 params->eht_oper = (void *)(cap->data + 1);
5794                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5795                                                 cap->datalen - 1))
5796                         return -EINVAL;
5797         }
5798         return 0;
5799 }
5800
5801 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5802                                    struct cfg80211_ap_settings *params)
5803 {
5804         struct wireless_dev *wdev;
5805
5806         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5807                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5808                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5809                         continue;
5810
5811                 if (!wdev->u.ap.preset_chandef.chan)
5812                         continue;
5813
5814                 params->chandef = wdev->u.ap.preset_chandef;
5815                 return true;
5816         }
5817
5818         return false;
5819 }
5820
5821 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5822                                     enum nl80211_auth_type auth_type,
5823                                     enum nl80211_commands cmd)
5824 {
5825         if (auth_type > NL80211_AUTHTYPE_MAX)
5826                 return false;
5827
5828         switch (cmd) {
5829         case NL80211_CMD_AUTHENTICATE:
5830                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5831                     auth_type == NL80211_AUTHTYPE_SAE)
5832                         return false;
5833                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5834                                              NL80211_EXT_FEATURE_FILS_STA) &&
5835                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5836                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5837                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5838                         return false;
5839                 return true;
5840         case NL80211_CMD_CONNECT:
5841                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5842                     !wiphy_ext_feature_isset(&rdev->wiphy,
5843                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5844                     auth_type == NL80211_AUTHTYPE_SAE)
5845                         return false;
5846
5847                 /* FILS with SK PFS or PK not supported yet */
5848                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5849                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5850                         return false;
5851                 if (!wiphy_ext_feature_isset(
5852                             &rdev->wiphy,
5853                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5854                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5855                         return false;
5856                 return true;
5857         case NL80211_CMD_START_AP:
5858                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5859                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5860                     auth_type == NL80211_AUTHTYPE_SAE)
5861                         return false;
5862                 /* FILS not supported yet */
5863                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5864                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5865                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5866                         return false;
5867                 return true;
5868         default:
5869                 return false;
5870         }
5871 }
5872
5873 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5874                                     unsigned int link_id)
5875 {
5876         struct wiphy *wiphy = wdev->wiphy;
5877         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5878         struct sk_buff *msg;
5879         void *hdr;
5880
5881         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5882         if (!msg)
5883                 return;
5884
5885         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5886         if (!hdr)
5887                 goto out;
5888
5889         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5890             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5891             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5892                               NL80211_ATTR_PAD) ||
5893             (wdev->u.ap.ssid_len &&
5894              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5895                      wdev->u.ap.ssid)) ||
5896             (wdev->valid_links &&
5897              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5898                 goto out;
5899
5900         genlmsg_end(msg, hdr);
5901
5902         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5903                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5904         return;
5905 out:
5906         nlmsg_free(msg);
5907 }
5908
5909 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5910 {
5911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5912         unsigned int link_id = nl80211_link_id(info->attrs);
5913         struct net_device *dev = info->user_ptr[1];
5914         struct wireless_dev *wdev = dev->ieee80211_ptr;
5915         struct cfg80211_ap_settings *params;
5916         int err;
5917
5918         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5919             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5920                 return -EOPNOTSUPP;
5921
5922         if (!rdev->ops->start_ap)
5923                 return -EOPNOTSUPP;
5924
5925         if (wdev->links[link_id].ap.beacon_interval)
5926                 return -EALREADY;
5927
5928         /* these are required for START_AP */
5929         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5930             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5931             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5932                 return -EINVAL;
5933
5934         params = kzalloc(sizeof(*params), GFP_KERNEL);
5935         if (!params)
5936                 return -ENOMEM;
5937
5938         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5939                                    info->extack);
5940         if (err)
5941                 goto out;
5942
5943         params->beacon_interval =
5944                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5945         params->dtim_period =
5946                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5947
5948         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5949                                            params->beacon_interval);
5950         if (err)
5951                 goto out;
5952
5953         /*
5954          * In theory, some of these attributes should be required here
5955          * but since they were not used when the command was originally
5956          * added, keep them optional for old user space programs to let
5957          * them continue to work with drivers that do not need the
5958          * additional information -- drivers must check!
5959          */
5960         if (info->attrs[NL80211_ATTR_SSID]) {
5961                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5962                 params->ssid_len =
5963                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5964                 if (params->ssid_len == 0) {
5965                         err = -EINVAL;
5966                         goto out;
5967                 }
5968
5969                 if (wdev->u.ap.ssid_len &&
5970                     (wdev->u.ap.ssid_len != params->ssid_len ||
5971                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5972                         /* require identical SSID for MLO */
5973                         err = -EINVAL;
5974                         goto out;
5975                 }
5976         } else if (wdev->valid_links) {
5977                 /* require SSID for MLO */
5978                 err = -EINVAL;
5979                 goto out;
5980         }
5981
5982         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5983                 params->hidden_ssid = nla_get_u32(
5984                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5985
5986         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5987
5988         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5989                 params->auth_type = nla_get_u32(
5990                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5991                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5992                                              NL80211_CMD_START_AP)) {
5993                         err = -EINVAL;
5994                         goto out;
5995                 }
5996         } else
5997                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5998
5999         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6000                                       NL80211_MAX_NR_CIPHER_SUITES);
6001         if (err)
6002                 goto out;
6003
6004         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6005                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6006                         err = -EOPNOTSUPP;
6007                         goto out;
6008                 }
6009                 params->inactivity_timeout = nla_get_u16(
6010                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6011         }
6012
6013         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6014                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6015                         err = -EINVAL;
6016                         goto out;
6017                 }
6018                 params->p2p_ctwindow =
6019                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6020                 if (params->p2p_ctwindow != 0 &&
6021                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6022                         err = -EINVAL;
6023                         goto out;
6024                 }
6025         }
6026
6027         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6028                 u8 tmp;
6029
6030                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6031                         err = -EINVAL;
6032                         goto out;
6033                 }
6034                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6035                 params->p2p_opp_ps = tmp;
6036                 if (params->p2p_opp_ps != 0 &&
6037                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6038                         err = -EINVAL;
6039                         goto out;
6040                 }
6041         }
6042
6043         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6044                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6045                 if (err)
6046                         goto out;
6047         } else if (wdev->valid_links) {
6048                 /* with MLD need to specify the channel configuration */
6049                 err = -EINVAL;
6050                 goto out;
6051         } else if (wdev->u.ap.preset_chandef.chan) {
6052                 params->chandef = wdev->u.ap.preset_chandef;
6053         } else if (!nl80211_get_ap_channel(rdev, params)) {
6054                 err = -EINVAL;
6055                 goto out;
6056         }
6057
6058         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6059                 err = nl80211_parse_punct_bitmap(rdev, info,
6060                                                  &params->chandef,
6061                                                  &params->punct_bitmap);
6062                 if (err)
6063                         goto out;
6064         }
6065
6066         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6067                                            wdev->iftype)) {
6068                 err = -EINVAL;
6069                 goto out;
6070         }
6071
6072         wdev_lock(wdev);
6073
6074         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6075                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6076                                                     NL80211_ATTR_TX_RATES,
6077                                                     &params->beacon_rate,
6078                                                     dev, false, link_id);
6079                 if (err)
6080                         goto out_unlock;
6081
6082                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6083                                               &params->beacon_rate);
6084                 if (err)
6085                         goto out_unlock;
6086         }
6087
6088         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6089                 params->smps_mode =
6090                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6091                 switch (params->smps_mode) {
6092                 case NL80211_SMPS_OFF:
6093                         break;
6094                 case NL80211_SMPS_STATIC:
6095                         if (!(rdev->wiphy.features &
6096                               NL80211_FEATURE_STATIC_SMPS)) {
6097                                 err = -EINVAL;
6098                                 goto out_unlock;
6099                         }
6100                         break;
6101                 case NL80211_SMPS_DYNAMIC:
6102                         if (!(rdev->wiphy.features &
6103                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6104                                 err = -EINVAL;
6105                                 goto out_unlock;
6106                         }
6107                         break;
6108                 default:
6109                         err = -EINVAL;
6110                         goto out_unlock;
6111                 }
6112         } else {
6113                 params->smps_mode = NL80211_SMPS_OFF;
6114         }
6115
6116         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6117         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6118                 err = -EOPNOTSUPP;
6119                 goto out_unlock;
6120         }
6121
6122         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6123                 params->acl = parse_acl_data(&rdev->wiphy, info);
6124                 if (IS_ERR(params->acl)) {
6125                         err = PTR_ERR(params->acl);
6126                         params->acl = NULL;
6127                         goto out_unlock;
6128                 }
6129         }
6130
6131         params->twt_responder =
6132                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6133
6134         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6135                 err = nl80211_parse_he_obss_pd(
6136                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6137                                         &params->he_obss_pd);
6138                 if (err)
6139                         goto out_unlock;
6140         }
6141
6142         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6143                 err = nl80211_parse_fils_discovery(rdev,
6144                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6145                                                    params);
6146                 if (err)
6147                         goto out_unlock;
6148         }
6149
6150         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6151                 err = nl80211_parse_unsol_bcast_probe_resp(
6152                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6153                         params);
6154                 if (err)
6155                         goto out_unlock;
6156         }
6157
6158         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6159                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6160                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6161                                                   &params->mbssid_config,
6162                                                   params->beacon.mbssid_ies ?
6163                                                         params->beacon.mbssid_ies->cnt :
6164                                                         0);
6165                 if (err)
6166                         goto out_unlock;
6167         }
6168
6169         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6170                 err = -EINVAL;
6171                 goto out_unlock;
6172         }
6173
6174         err = nl80211_calculate_ap_params(params);
6175         if (err)
6176                 goto out_unlock;
6177
6178         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6179                 params->flags = nla_get_u32(
6180                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6181         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6182                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6183
6184         if (wdev->conn_owner_nlportid &&
6185             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6186             wdev->conn_owner_nlportid != info->snd_portid) {
6187                 err = -EINVAL;
6188                 goto out_unlock;
6189         }
6190
6191         /* FIXME: validate MLO/link-id against driver capabilities */
6192
6193         err = rdev_start_ap(rdev, dev, params);
6194         if (!err) {
6195                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6196                 wdev->links[link_id].ap.chandef = params->chandef;
6197                 wdev->u.ap.ssid_len = params->ssid_len;
6198                 memcpy(wdev->u.ap.ssid, params->ssid,
6199                        params->ssid_len);
6200
6201                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6202                         wdev->conn_owner_nlportid = info->snd_portid;
6203
6204                 nl80211_send_ap_started(wdev, link_id);
6205         }
6206 out_unlock:
6207         wdev_unlock(wdev);
6208 out:
6209         kfree(params->acl);
6210         kfree(params->beacon.mbssid_ies);
6211         if (params->mbssid_config.tx_wdev &&
6212             params->mbssid_config.tx_wdev->netdev &&
6213             params->mbssid_config.tx_wdev->netdev != dev)
6214                 dev_put(params->mbssid_config.tx_wdev->netdev);
6215         kfree(params->beacon.rnr_ies);
6216         kfree(params);
6217
6218         return err;
6219 }
6220
6221 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6222 {
6223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6224         unsigned int link_id = nl80211_link_id(info->attrs);
6225         struct net_device *dev = info->user_ptr[1];
6226         struct wireless_dev *wdev = dev->ieee80211_ptr;
6227         struct cfg80211_beacon_data params;
6228         int err;
6229
6230         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6231             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6232                 return -EOPNOTSUPP;
6233
6234         if (!rdev->ops->change_beacon)
6235                 return -EOPNOTSUPP;
6236
6237         if (!wdev->links[link_id].ap.beacon_interval)
6238                 return -EINVAL;
6239
6240         err = nl80211_parse_beacon(rdev, info->attrs, &params, info->extack);
6241         if (err)
6242                 goto out;
6243
6244         wdev_lock(wdev);
6245         err = rdev_change_beacon(rdev, dev, &params);
6246         wdev_unlock(wdev);
6247
6248 out:
6249         kfree(params.mbssid_ies);
6250         kfree(params.rnr_ies);
6251         return err;
6252 }
6253
6254 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6255 {
6256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6257         unsigned int link_id = nl80211_link_id(info->attrs);
6258         struct net_device *dev = info->user_ptr[1];
6259
6260         return cfg80211_stop_ap(rdev, dev, link_id, false);
6261 }
6262
6263 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6264         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6265         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6266         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6267         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6268         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6269         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6270 };
6271
6272 static int parse_station_flags(struct genl_info *info,
6273                                enum nl80211_iftype iftype,
6274                                struct station_parameters *params)
6275 {
6276         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6277         struct nlattr *nla;
6278         int flag;
6279
6280         /*
6281          * Try parsing the new attribute first so userspace
6282          * can specify both for older kernels.
6283          */
6284         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6285         if (nla) {
6286                 struct nl80211_sta_flag_update *sta_flags;
6287
6288                 sta_flags = nla_data(nla);
6289                 params->sta_flags_mask = sta_flags->mask;
6290                 params->sta_flags_set = sta_flags->set;
6291                 params->sta_flags_set &= params->sta_flags_mask;
6292                 if ((params->sta_flags_mask |
6293                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6294                         return -EINVAL;
6295                 return 0;
6296         }
6297
6298         /* if present, parse the old attribute */
6299
6300         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6301         if (!nla)
6302                 return 0;
6303
6304         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6305                 return -EINVAL;
6306
6307         /*
6308          * Only allow certain flags for interface types so that
6309          * other attributes are silently ignored. Remember that
6310          * this is backward compatibility code with old userspace
6311          * and shouldn't be hit in other cases anyway.
6312          */
6313         switch (iftype) {
6314         case NL80211_IFTYPE_AP:
6315         case NL80211_IFTYPE_AP_VLAN:
6316         case NL80211_IFTYPE_P2P_GO:
6317                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6318                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6319                                          BIT(NL80211_STA_FLAG_WME) |
6320                                          BIT(NL80211_STA_FLAG_MFP);
6321                 break;
6322         case NL80211_IFTYPE_P2P_CLIENT:
6323         case NL80211_IFTYPE_STATION:
6324                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6325                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6326                 break;
6327         case NL80211_IFTYPE_MESH_POINT:
6328                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6329                                          BIT(NL80211_STA_FLAG_MFP) |
6330                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6331                 break;
6332         default:
6333                 return -EINVAL;
6334         }
6335
6336         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6337                 if (flags[flag]) {
6338                         params->sta_flags_set |= (1<<flag);
6339
6340                         /* no longer support new API additions in old API */
6341                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6342                                 return -EINVAL;
6343                 }
6344         }
6345
6346         return 0;
6347 }
6348
6349 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6350 {
6351         struct nlattr *rate;
6352         u32 bitrate;
6353         u16 bitrate_compat;
6354         enum nl80211_rate_info rate_flg;
6355
6356         rate = nla_nest_start_noflag(msg, attr);
6357         if (!rate)
6358                 return false;
6359
6360         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6361         bitrate = cfg80211_calculate_bitrate(info);
6362         /* report 16-bit bitrate only if we can */
6363         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6364         if (bitrate > 0 &&
6365             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6366                 return false;
6367         if (bitrate_compat > 0 &&
6368             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6369                 return false;
6370
6371         switch (info->bw) {
6372         case RATE_INFO_BW_1:
6373                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6374                 break;
6375         case RATE_INFO_BW_2:
6376                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6377                 break;
6378         case RATE_INFO_BW_4:
6379                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6380                 break;
6381         case RATE_INFO_BW_5:
6382                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6383                 break;
6384         case RATE_INFO_BW_8:
6385                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6386                 break;
6387         case RATE_INFO_BW_10:
6388                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6389                 break;
6390         case RATE_INFO_BW_16:
6391                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6392                 break;
6393         default:
6394                 WARN_ON(1);
6395                 fallthrough;
6396         case RATE_INFO_BW_20:
6397                 rate_flg = 0;
6398                 break;
6399         case RATE_INFO_BW_40:
6400                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6401                 break;
6402         case RATE_INFO_BW_80:
6403                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6404                 break;
6405         case RATE_INFO_BW_160:
6406                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6407                 break;
6408         case RATE_INFO_BW_HE_RU:
6409                 rate_flg = 0;
6410                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6411                 break;
6412         case RATE_INFO_BW_320:
6413                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6414                 break;
6415         case RATE_INFO_BW_EHT_RU:
6416                 rate_flg = 0;
6417                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6418                 break;
6419         }
6420
6421         if (rate_flg && nla_put_flag(msg, rate_flg))
6422                 return false;
6423
6424         if (info->flags & RATE_INFO_FLAGS_MCS) {
6425                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6426                         return false;
6427                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6428                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6429                         return false;
6430         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6431                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6432                         return false;
6433                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6434                         return false;
6435                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6436                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6437                         return false;
6438         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6439                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6440                         return false;
6441                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6442                         return false;
6443                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6444                         return false;
6445                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6446                         return false;
6447                 if (info->bw == RATE_INFO_BW_HE_RU &&
6448                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6449                                info->he_ru_alloc))
6450                         return false;
6451         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6452                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6453                         return false;
6454                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6455                         return false;
6456                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6457                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6458                         return false;
6459         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6460                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6461                         return false;
6462                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6463                         return false;
6464                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6465                         return false;
6466                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6467                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6468                                info->eht_ru_alloc))
6469                         return false;
6470         }
6471
6472         nla_nest_end(msg, rate);
6473         return true;
6474 }
6475
6476 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6477                                int id)
6478 {
6479         void *attr;
6480         int i = 0;
6481
6482         if (!mask)
6483                 return true;
6484
6485         attr = nla_nest_start_noflag(msg, id);
6486         if (!attr)
6487                 return false;
6488
6489         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6490                 if (!(mask & BIT(i)))
6491                         continue;
6492
6493                 if (nla_put_u8(msg, i, signal[i]))
6494                         return false;
6495         }
6496
6497         nla_nest_end(msg, attr);
6498
6499         return true;
6500 }
6501
6502 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6503                                 u32 seq, int flags,
6504                                 struct cfg80211_registered_device *rdev,
6505                                 struct net_device *dev,
6506                                 const u8 *mac_addr, struct station_info *sinfo)
6507 {
6508         void *hdr;
6509         struct nlattr *sinfoattr, *bss_param;
6510
6511         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6512         if (!hdr) {
6513                 cfg80211_sinfo_release_content(sinfo);
6514                 return -1;
6515         }
6516
6517         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6518             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6519             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6520                 goto nla_put_failure;
6521
6522         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6523         if (!sinfoattr)
6524                 goto nla_put_failure;
6525
6526 #define PUT_SINFO(attr, memb, type) do {                                \
6527         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6528         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6529             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6530                              sinfo->memb))                              \
6531                 goto nla_put_failure;                                   \
6532         } while (0)
6533 #define PUT_SINFO_U64(attr, memb) do {                                  \
6534         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6535             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6536                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6537                 goto nla_put_failure;                                   \
6538         } while (0)
6539
6540         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6541         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6542         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6543
6544         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6545                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6546             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6547                         (u32)sinfo->rx_bytes))
6548                 goto nla_put_failure;
6549
6550         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6551                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6552             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6553                         (u32)sinfo->tx_bytes))
6554                 goto nla_put_failure;
6555
6556         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6557         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6558         PUT_SINFO(LLID, llid, u16);
6559         PUT_SINFO(PLID, plid, u16);
6560         PUT_SINFO(PLINK_STATE, plink_state, u8);
6561         PUT_SINFO_U64(RX_DURATION, rx_duration);
6562         PUT_SINFO_U64(TX_DURATION, tx_duration);
6563
6564         if (wiphy_ext_feature_isset(&rdev->wiphy,
6565                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6566                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6567
6568         switch (rdev->wiphy.signal_type) {
6569         case CFG80211_SIGNAL_TYPE_MBM:
6570                 PUT_SINFO(SIGNAL, signal, u8);
6571                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6572                 break;
6573         default:
6574                 break;
6575         }
6576         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6577                 if (!nl80211_put_signal(msg, sinfo->chains,
6578                                         sinfo->chain_signal,
6579                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6580                         goto nla_put_failure;
6581         }
6582         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6583                 if (!nl80211_put_signal(msg, sinfo->chains,
6584                                         sinfo->chain_signal_avg,
6585                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6586                         goto nla_put_failure;
6587         }
6588         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6589                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6590                                           NL80211_STA_INFO_TX_BITRATE))
6591                         goto nla_put_failure;
6592         }
6593         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6594                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6595                                           NL80211_STA_INFO_RX_BITRATE))
6596                         goto nla_put_failure;
6597         }
6598
6599         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6600         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6601         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6602         PUT_SINFO(TX_FAILED, tx_failed, u32);
6603         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6604         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6605         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6606         PUT_SINFO(LOCAL_PM, local_pm, u32);
6607         PUT_SINFO(PEER_PM, peer_pm, u32);
6608         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6609         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6610         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6611
6612         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6613                 bss_param = nla_nest_start_noflag(msg,
6614                                                   NL80211_STA_INFO_BSS_PARAM);
6615                 if (!bss_param)
6616                         goto nla_put_failure;
6617
6618                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6619                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6620                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6621                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6622                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6623                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6624                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6625                                sinfo->bss_param.dtim_period) ||
6626                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6627                                 sinfo->bss_param.beacon_interval))
6628                         goto nla_put_failure;
6629
6630                 nla_nest_end(msg, bss_param);
6631         }
6632         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6633             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6634                     sizeof(struct nl80211_sta_flag_update),
6635                     &sinfo->sta_flags))
6636                 goto nla_put_failure;
6637
6638         PUT_SINFO_U64(T_OFFSET, t_offset);
6639         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6640         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6641         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6642         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6643         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6644         if (wiphy_ext_feature_isset(&rdev->wiphy,
6645                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6646                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6647                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6648         }
6649
6650 #undef PUT_SINFO
6651 #undef PUT_SINFO_U64
6652
6653         if (sinfo->pertid) {
6654                 struct nlattr *tidsattr;
6655                 int tid;
6656
6657                 tidsattr = nla_nest_start_noflag(msg,
6658                                                  NL80211_STA_INFO_TID_STATS);
6659                 if (!tidsattr)
6660                         goto nla_put_failure;
6661
6662                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6663                         struct cfg80211_tid_stats *tidstats;
6664                         struct nlattr *tidattr;
6665
6666                         tidstats = &sinfo->pertid[tid];
6667
6668                         if (!tidstats->filled)
6669                                 continue;
6670
6671                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6672                         if (!tidattr)
6673                                 goto nla_put_failure;
6674
6675 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6676         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6677             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6678                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6679                 goto nla_put_failure;                                   \
6680         } while (0)
6681
6682                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6683                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6684                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6685                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6686
6687 #undef PUT_TIDVAL_U64
6688                         if ((tidstats->filled &
6689                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6690                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6691                                                    NL80211_TID_STATS_TXQ_STATS))
6692                                 goto nla_put_failure;
6693
6694                         nla_nest_end(msg, tidattr);
6695                 }
6696
6697                 nla_nest_end(msg, tidsattr);
6698         }
6699
6700         nla_nest_end(msg, sinfoattr);
6701
6702         if (sinfo->assoc_req_ies_len &&
6703             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6704                     sinfo->assoc_req_ies))
6705                 goto nla_put_failure;
6706
6707         if (sinfo->assoc_resp_ies_len &&
6708             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6709                     sinfo->assoc_resp_ies))
6710                 goto nla_put_failure;
6711
6712         if (sinfo->mlo_params_valid) {
6713                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6714                                sinfo->assoc_link_id))
6715                         goto nla_put_failure;
6716
6717                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6718                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6719                             sinfo->mld_addr))
6720                         goto nla_put_failure;
6721         }
6722
6723         cfg80211_sinfo_release_content(sinfo);
6724         genlmsg_end(msg, hdr);
6725         return 0;
6726
6727  nla_put_failure:
6728         cfg80211_sinfo_release_content(sinfo);
6729         genlmsg_cancel(msg, hdr);
6730         return -EMSGSIZE;
6731 }
6732
6733 static int nl80211_dump_station(struct sk_buff *skb,
6734                                 struct netlink_callback *cb)
6735 {
6736         struct station_info sinfo;
6737         struct cfg80211_registered_device *rdev;
6738         struct wireless_dev *wdev;
6739         u8 mac_addr[ETH_ALEN];
6740         int sta_idx = cb->args[2];
6741         int err;
6742
6743         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6744         if (err)
6745                 return err;
6746         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6747         __acquire(&rdev->wiphy.mtx);
6748
6749         if (!wdev->netdev) {
6750                 err = -EINVAL;
6751                 goto out_err;
6752         }
6753
6754         if (!rdev->ops->dump_station) {
6755                 err = -EOPNOTSUPP;
6756                 goto out_err;
6757         }
6758
6759         while (1) {
6760                 memset(&sinfo, 0, sizeof(sinfo));
6761                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6762                                         mac_addr, &sinfo);
6763                 if (err == -ENOENT)
6764                         break;
6765                 if (err)
6766                         goto out_err;
6767
6768                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6769                                 NETLINK_CB(cb->skb).portid,
6770                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6771                                 rdev, wdev->netdev, mac_addr,
6772                                 &sinfo) < 0)
6773                         goto out;
6774
6775                 sta_idx++;
6776         }
6777
6778  out:
6779         cb->args[2] = sta_idx;
6780         err = skb->len;
6781  out_err:
6782         wiphy_unlock(&rdev->wiphy);
6783
6784         return err;
6785 }
6786
6787 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6788 {
6789         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6790         struct net_device *dev = info->user_ptr[1];
6791         struct station_info sinfo;
6792         struct sk_buff *msg;
6793         u8 *mac_addr = NULL;
6794         int err;
6795
6796         memset(&sinfo, 0, sizeof(sinfo));
6797
6798         if (!info->attrs[NL80211_ATTR_MAC])
6799                 return -EINVAL;
6800
6801         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6802
6803         if (!rdev->ops->get_station)
6804                 return -EOPNOTSUPP;
6805
6806         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6807         if (err)
6808                 return err;
6809
6810         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6811         if (!msg) {
6812                 cfg80211_sinfo_release_content(&sinfo);
6813                 return -ENOMEM;
6814         }
6815
6816         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6817                                  info->snd_portid, info->snd_seq, 0,
6818                                  rdev, dev, mac_addr, &sinfo) < 0) {
6819                 nlmsg_free(msg);
6820                 return -ENOBUFS;
6821         }
6822
6823         return genlmsg_reply(msg, info);
6824 }
6825
6826 int cfg80211_check_station_change(struct wiphy *wiphy,
6827                                   struct station_parameters *params,
6828                                   enum cfg80211_station_type statype)
6829 {
6830         if (params->listen_interval != -1 &&
6831             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6832                 return -EINVAL;
6833
6834         if (params->support_p2p_ps != -1 &&
6835             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6836                 return -EINVAL;
6837
6838         if (params->aid &&
6839             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6840             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6841                 return -EINVAL;
6842
6843         /* When you run into this, adjust the code below for the new flag */
6844         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6845
6846         switch (statype) {
6847         case CFG80211_STA_MESH_PEER_KERNEL:
6848         case CFG80211_STA_MESH_PEER_USER:
6849                 /*
6850                  * No ignoring the TDLS flag here -- the userspace mesh
6851                  * code doesn't have the bug of including TDLS in the
6852                  * mask everywhere.
6853                  */
6854                 if (params->sta_flags_mask &
6855                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6856                                   BIT(NL80211_STA_FLAG_MFP) |
6857                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6858                         return -EINVAL;
6859                 break;
6860         case CFG80211_STA_TDLS_PEER_SETUP:
6861         case CFG80211_STA_TDLS_PEER_ACTIVE:
6862                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6863                         return -EINVAL;
6864                 /* ignore since it can't change */
6865                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6866                 break;
6867         default:
6868                 /* disallow mesh-specific things */
6869                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6870                         return -EINVAL;
6871                 if (params->local_pm)
6872                         return -EINVAL;
6873                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6874                         return -EINVAL;
6875         }
6876
6877         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6878             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6879                 /* TDLS can't be set, ... */
6880                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6881                         return -EINVAL;
6882                 /*
6883                  * ... but don't bother the driver with it. This works around
6884                  * a hostapd/wpa_supplicant issue -- it always includes the
6885                  * TLDS_PEER flag in the mask even for AP mode.
6886                  */
6887                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6888         }
6889
6890         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6891             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6892                 /* reject other things that can't change */
6893                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6894                         return -EINVAL;
6895                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6896                         return -EINVAL;
6897                 if (params->link_sta_params.supported_rates)
6898                         return -EINVAL;
6899                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6900                     params->link_sta_params.vht_capa ||
6901                     params->link_sta_params.he_capa ||
6902                     params->link_sta_params.eht_capa)
6903                         return -EINVAL;
6904         }
6905
6906         if (statype != CFG80211_STA_AP_CLIENT &&
6907             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6908                 if (params->vlan)
6909                         return -EINVAL;
6910         }
6911
6912         switch (statype) {
6913         case CFG80211_STA_AP_MLME_CLIENT:
6914                 /* Use this only for authorizing/unauthorizing a station */
6915                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6916                         return -EOPNOTSUPP;
6917                 break;
6918         case CFG80211_STA_AP_CLIENT:
6919         case CFG80211_STA_AP_CLIENT_UNASSOC:
6920                 /* accept only the listed bits */
6921                 if (params->sta_flags_mask &
6922                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6923                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6924                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6925                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6926                                   BIT(NL80211_STA_FLAG_WME) |
6927                                   BIT(NL80211_STA_FLAG_MFP)))
6928                         return -EINVAL;
6929
6930                 /* but authenticated/associated only if driver handles it */
6931                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6932                     params->sta_flags_mask &
6933                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6934                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6935                         return -EINVAL;
6936                 break;
6937         case CFG80211_STA_IBSS:
6938         case CFG80211_STA_AP_STA:
6939                 /* reject any changes other than AUTHORIZED */
6940                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6941                         return -EINVAL;
6942                 break;
6943         case CFG80211_STA_TDLS_PEER_SETUP:
6944                 /* reject any changes other than AUTHORIZED or WME */
6945                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6946                                                BIT(NL80211_STA_FLAG_WME)))
6947                         return -EINVAL;
6948                 /* force (at least) rates when authorizing */
6949                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6950                     !params->link_sta_params.supported_rates)
6951                         return -EINVAL;
6952                 break;
6953         case CFG80211_STA_TDLS_PEER_ACTIVE:
6954                 /* reject any changes */
6955                 return -EINVAL;
6956         case CFG80211_STA_MESH_PEER_KERNEL:
6957                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6958                         return -EINVAL;
6959                 break;
6960         case CFG80211_STA_MESH_PEER_USER:
6961                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6962                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6963                         return -EINVAL;
6964                 break;
6965         }
6966
6967         /*
6968          * Older kernel versions ignored this attribute entirely, so don't
6969          * reject attempts to update it but mark it as unused instead so the
6970          * driver won't look at the data.
6971          */
6972         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6973             statype != CFG80211_STA_TDLS_PEER_SETUP)
6974                 params->link_sta_params.opmode_notif_used = false;
6975
6976         return 0;
6977 }
6978 EXPORT_SYMBOL(cfg80211_check_station_change);
6979
6980 /*
6981  * Get vlan interface making sure it is running and on the right wiphy.
6982  */
6983 static struct net_device *get_vlan(struct genl_info *info,
6984                                    struct cfg80211_registered_device *rdev)
6985 {
6986         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6987         struct net_device *v;
6988         int ret;
6989
6990         if (!vlanattr)
6991                 return NULL;
6992
6993         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6994         if (!v)
6995                 return ERR_PTR(-ENODEV);
6996
6997         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6998                 ret = -EINVAL;
6999                 goto error;
7000         }
7001
7002         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7003             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7004             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7005                 ret = -EINVAL;
7006                 goto error;
7007         }
7008
7009         if (!netif_running(v)) {
7010                 ret = -ENETDOWN;
7011                 goto error;
7012         }
7013
7014         return v;
7015  error:
7016         dev_put(v);
7017         return ERR_PTR(ret);
7018 }
7019
7020 static int nl80211_parse_sta_wme(struct genl_info *info,
7021                                  struct station_parameters *params)
7022 {
7023         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7024         struct nlattr *nla;
7025         int err;
7026
7027         /* parse WME attributes if present */
7028         if (!info->attrs[NL80211_ATTR_STA_WME])
7029                 return 0;
7030
7031         nla = info->attrs[NL80211_ATTR_STA_WME];
7032         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7033                                           nl80211_sta_wme_policy,
7034                                           info->extack);
7035         if (err)
7036                 return err;
7037
7038         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7039                 params->uapsd_queues = nla_get_u8(
7040                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7041         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7042                 return -EINVAL;
7043
7044         if (tb[NL80211_STA_WME_MAX_SP])
7045                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7046
7047         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7048                 return -EINVAL;
7049
7050         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7051
7052         return 0;
7053 }
7054
7055 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7056                                       struct station_parameters *params)
7057 {
7058         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7059                 params->supported_channels =
7060                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7061                 params->supported_channels_len =
7062                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7063                 /*
7064                  * Need to include at least one (first channel, number of
7065                  * channels) tuple for each subband (checked in policy),
7066                  * and must have proper tuples for the rest of the data as well.
7067                  */
7068                 if (params->supported_channels_len % 2)
7069                         return -EINVAL;
7070         }
7071
7072         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7073                 params->supported_oper_classes =
7074                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7075                 params->supported_oper_classes_len =
7076                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7077         }
7078         return 0;
7079 }
7080
7081 static int nl80211_set_station_tdls(struct genl_info *info,
7082                                     struct station_parameters *params)
7083 {
7084         int err;
7085         /* Dummy STA entry gets updated once the peer capabilities are known */
7086         if (info->attrs[NL80211_ATTR_PEER_AID])
7087                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7088         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7089                 params->link_sta_params.ht_capa =
7090                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7091         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7092                 params->link_sta_params.vht_capa =
7093                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7094         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7095                 params->link_sta_params.he_capa =
7096                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7097                 params->link_sta_params.he_capa_len =
7098                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7099
7100                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7101                         params->link_sta_params.eht_capa =
7102                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7103                         params->link_sta_params.eht_capa_len =
7104                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7105
7106                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7107                                                         (const u8 *)params->link_sta_params.eht_capa,
7108                                                         params->link_sta_params.eht_capa_len,
7109                                                         false))
7110                                 return -EINVAL;
7111                 }
7112         }
7113
7114         err = nl80211_parse_sta_channel_info(info, params);
7115         if (err)
7116                 return err;
7117
7118         return nl80211_parse_sta_wme(info, params);
7119 }
7120
7121 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7122                                              struct sta_txpwr *txpwr,
7123                                              bool *txpwr_set)
7124 {
7125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7126         int idx;
7127
7128         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7129                 if (!rdev->ops->set_tx_power ||
7130                     !wiphy_ext_feature_isset(&rdev->wiphy,
7131                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7132                         return -EOPNOTSUPP;
7133
7134                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7135                 txpwr->type = nla_get_u8(info->attrs[idx]);
7136
7137                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7138                         idx = NL80211_ATTR_STA_TX_POWER;
7139
7140                         if (info->attrs[idx])
7141                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7142                         else
7143                                 return -EINVAL;
7144                 }
7145
7146                 *txpwr_set = true;
7147         } else {
7148                 *txpwr_set = false;
7149         }
7150
7151         return 0;
7152 }
7153
7154 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7155 {
7156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7157         struct net_device *dev = info->user_ptr[1];
7158         struct station_parameters params;
7159         u8 *mac_addr;
7160         int err;
7161
7162         memset(&params, 0, sizeof(params));
7163
7164         if (!rdev->ops->change_station)
7165                 return -EOPNOTSUPP;
7166
7167         /*
7168          * AID and listen_interval properties can be set only for unassociated
7169          * station. Include these parameters here and will check them in
7170          * cfg80211_check_station_change().
7171          */
7172         if (info->attrs[NL80211_ATTR_STA_AID])
7173                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7174
7175         if (info->attrs[NL80211_ATTR_VLAN_ID])
7176                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7177
7178         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7179                 params.listen_interval =
7180                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7181         else
7182                 params.listen_interval = -1;
7183
7184         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7185                 params.support_p2p_ps =
7186                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7187         else
7188                 params.support_p2p_ps = -1;
7189
7190         if (!info->attrs[NL80211_ATTR_MAC])
7191                 return -EINVAL;
7192
7193         params.link_sta_params.link_id =
7194                 nl80211_link_id_or_invalid(info->attrs);
7195
7196         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7197                 /* If MLD_ADDR attribute is set then this is an MLD station
7198                  * and the MLD_ADDR attribute holds the MLD address and the
7199                  * MAC attribute holds for the LINK address.
7200                  * In that case, the link_id is also expected to be valid.
7201                  */
7202                 if (params.link_sta_params.link_id < 0)
7203                         return -EINVAL;
7204
7205                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7206                 params.link_sta_params.mld_mac = mac_addr;
7207                 params.link_sta_params.link_mac =
7208                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7209                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7210                         return -EINVAL;
7211         } else {
7212                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7213         }
7214
7215
7216         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7217                 params.link_sta_params.supported_rates =
7218                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7219                 params.link_sta_params.supported_rates_len =
7220                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7221         }
7222
7223         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7224                 params.capability =
7225                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7226                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7227         }
7228
7229         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7230                 params.ext_capab =
7231                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7232                 params.ext_capab_len =
7233                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7234         }
7235
7236         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7237                 return -EINVAL;
7238
7239         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7240                 params.plink_action =
7241                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7242
7243         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7244                 params.plink_state =
7245                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7246                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7247                         params.peer_aid = nla_get_u16(
7248                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7249                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7250         }
7251
7252         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7253                 params.local_pm = nla_get_u32(
7254                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7255
7256         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7257                 params.link_sta_params.opmode_notif_used = true;
7258                 params.link_sta_params.opmode_notif =
7259                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7260         }
7261
7262         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7263                 params.link_sta_params.he_6ghz_capa =
7264                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7265
7266         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7267                 params.airtime_weight =
7268                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7269
7270         if (params.airtime_weight &&
7271             !wiphy_ext_feature_isset(&rdev->wiphy,
7272                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7273                 return -EOPNOTSUPP;
7274
7275         err = nl80211_parse_sta_txpower_setting(info,
7276                                                 &params.link_sta_params.txpwr,
7277                                                 &params.link_sta_params.txpwr_set);
7278         if (err)
7279                 return err;
7280
7281         /* Include parameters for TDLS peer (will check later) */
7282         err = nl80211_set_station_tdls(info, &params);
7283         if (err)
7284                 return err;
7285
7286         params.vlan = get_vlan(info, rdev);
7287         if (IS_ERR(params.vlan))
7288                 return PTR_ERR(params.vlan);
7289
7290         switch (dev->ieee80211_ptr->iftype) {
7291         case NL80211_IFTYPE_AP:
7292         case NL80211_IFTYPE_AP_VLAN:
7293         case NL80211_IFTYPE_P2P_GO:
7294         case NL80211_IFTYPE_P2P_CLIENT:
7295         case NL80211_IFTYPE_STATION:
7296         case NL80211_IFTYPE_ADHOC:
7297         case NL80211_IFTYPE_MESH_POINT:
7298                 break;
7299         default:
7300                 err = -EOPNOTSUPP;
7301                 goto out_put_vlan;
7302         }
7303
7304         /* driver will call cfg80211_check_station_change() */
7305         wdev_lock(dev->ieee80211_ptr);
7306         err = rdev_change_station(rdev, dev, mac_addr, &params);
7307         wdev_unlock(dev->ieee80211_ptr);
7308
7309  out_put_vlan:
7310         dev_put(params.vlan);
7311
7312         return err;
7313 }
7314
7315 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7316 {
7317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7318         int err;
7319         struct net_device *dev = info->user_ptr[1];
7320         struct wireless_dev *wdev = dev->ieee80211_ptr;
7321         struct station_parameters params;
7322         u8 *mac_addr = NULL;
7323         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7324                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7325
7326         memset(&params, 0, sizeof(params));
7327
7328         if (!rdev->ops->add_station)
7329                 return -EOPNOTSUPP;
7330
7331         if (!info->attrs[NL80211_ATTR_MAC])
7332                 return -EINVAL;
7333
7334         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7335                 return -EINVAL;
7336
7337         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7338                 return -EINVAL;
7339
7340         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7341             !info->attrs[NL80211_ATTR_PEER_AID])
7342                 return -EINVAL;
7343
7344         params.link_sta_params.link_id =
7345                 nl80211_link_id_or_invalid(info->attrs);
7346
7347         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7348                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7349                 params.link_sta_params.mld_mac = mac_addr;
7350                 params.link_sta_params.link_mac =
7351                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7352                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7353                         return -EINVAL;
7354         } else {
7355                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7356         }
7357
7358         params.link_sta_params.supported_rates =
7359                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7360         params.link_sta_params.supported_rates_len =
7361                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7362         params.listen_interval =
7363                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7364
7365         if (info->attrs[NL80211_ATTR_VLAN_ID])
7366                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7367
7368         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7369                 params.support_p2p_ps =
7370                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7371         } else {
7372                 /*
7373                  * if not specified, assume it's supported for P2P GO interface,
7374                  * and is NOT supported for AP interface
7375                  */
7376                 params.support_p2p_ps =
7377                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7378         }
7379
7380         if (info->attrs[NL80211_ATTR_PEER_AID])
7381                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7382         else
7383                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7384
7385         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7386                 params.capability =
7387                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7388                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7389         }
7390
7391         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7392                 params.ext_capab =
7393                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7394                 params.ext_capab_len =
7395                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7396         }
7397
7398         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7399                 params.link_sta_params.ht_capa =
7400                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7401
7402         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7403                 params.link_sta_params.vht_capa =
7404                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7405
7406         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7407                 params.link_sta_params.he_capa =
7408                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7409                 params.link_sta_params.he_capa_len =
7410                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7411
7412                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7413                         params.link_sta_params.eht_capa =
7414                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7415                         params.link_sta_params.eht_capa_len =
7416                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7417
7418                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7419                                                         (const u8 *)params.link_sta_params.eht_capa,
7420                                                         params.link_sta_params.eht_capa_len,
7421                                                         false))
7422                                 return -EINVAL;
7423                 }
7424         }
7425
7426         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7427                 params.link_sta_params.he_6ghz_capa =
7428                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7429
7430         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7431                 params.link_sta_params.opmode_notif_used = true;
7432                 params.link_sta_params.opmode_notif =
7433                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7434         }
7435
7436         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7437                 params.plink_action =
7438                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7439
7440         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7441                 params.airtime_weight =
7442                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7443
7444         if (params.airtime_weight &&
7445             !wiphy_ext_feature_isset(&rdev->wiphy,
7446                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7447                 return -EOPNOTSUPP;
7448
7449         err = nl80211_parse_sta_txpower_setting(info,
7450                                                 &params.link_sta_params.txpwr,
7451                                                 &params.link_sta_params.txpwr_set);
7452         if (err)
7453                 return err;
7454
7455         err = nl80211_parse_sta_channel_info(info, &params);
7456         if (err)
7457                 return err;
7458
7459         err = nl80211_parse_sta_wme(info, &params);
7460         if (err)
7461                 return err;
7462
7463         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7464                 return -EINVAL;
7465
7466         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7467          * as userspace might just pass through the capabilities from the IEs
7468          * directly, rather than enforcing this restriction and returning an
7469          * error in this case.
7470          */
7471         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7472                 params.link_sta_params.ht_capa = NULL;
7473                 params.link_sta_params.vht_capa = NULL;
7474
7475                 /* HE and EHT require WME */
7476                 if (params.link_sta_params.he_capa_len ||
7477                     params.link_sta_params.he_6ghz_capa ||
7478                     params.link_sta_params.eht_capa_len)
7479                         return -EINVAL;
7480         }
7481
7482         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7483         if (params.link_sta_params.he_6ghz_capa &&
7484             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7485                 return -EINVAL;
7486
7487         /* When you run into this, adjust the code below for the new flag */
7488         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7489
7490         switch (dev->ieee80211_ptr->iftype) {
7491         case NL80211_IFTYPE_AP:
7492         case NL80211_IFTYPE_AP_VLAN:
7493         case NL80211_IFTYPE_P2P_GO:
7494                 /* ignore WME attributes if iface/sta is not capable */
7495                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7496                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7497                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7498
7499                 /* TDLS peers cannot be added */
7500                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7501                     info->attrs[NL80211_ATTR_PEER_AID])
7502                         return -EINVAL;
7503                 /* but don't bother the driver with it */
7504                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7505
7506                 /* allow authenticated/associated only if driver handles it */
7507                 if (!(rdev->wiphy.features &
7508                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7509                     params.sta_flags_mask & auth_assoc)
7510                         return -EINVAL;
7511
7512                 /* Older userspace, or userspace wanting to be compatible with
7513                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7514                  * and assoc flags in the mask, but assumes the station will be
7515                  * added as associated anyway since this was the required driver
7516                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7517                  * introduced.
7518                  * In order to not bother drivers with this quirk in the API
7519                  * set the flags in both the mask and set for new stations in
7520                  * this case.
7521                  */
7522                 if (!(params.sta_flags_mask & auth_assoc)) {
7523                         params.sta_flags_mask |= auth_assoc;
7524                         params.sta_flags_set |= auth_assoc;
7525                 }
7526
7527                 /* must be last in here for error handling */
7528                 params.vlan = get_vlan(info, rdev);
7529                 if (IS_ERR(params.vlan))
7530                         return PTR_ERR(params.vlan);
7531                 break;
7532         case NL80211_IFTYPE_MESH_POINT:
7533                 /* ignore uAPSD data */
7534                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7535
7536                 /* associated is disallowed */
7537                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7538                         return -EINVAL;
7539                 /* TDLS peers cannot be added */
7540                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7541                     info->attrs[NL80211_ATTR_PEER_AID])
7542                         return -EINVAL;
7543                 break;
7544         case NL80211_IFTYPE_STATION:
7545         case NL80211_IFTYPE_P2P_CLIENT:
7546                 /* ignore uAPSD data */
7547                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7548
7549                 /* these are disallowed */
7550                 if (params.sta_flags_mask &
7551                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7552                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7553                         return -EINVAL;
7554                 /* Only TDLS peers can be added */
7555                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7556                         return -EINVAL;
7557                 /* Can only add if TDLS ... */
7558                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7559                         return -EOPNOTSUPP;
7560                 /* ... with external setup is supported */
7561                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7562                         return -EOPNOTSUPP;
7563                 /*
7564                  * Older wpa_supplicant versions always mark the TDLS peer
7565                  * as authorized, but it shouldn't yet be.
7566                  */
7567                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7568                 break;
7569         default:
7570                 return -EOPNOTSUPP;
7571         }
7572
7573         /* be aware of params.vlan when changing code here */
7574
7575         wdev_lock(dev->ieee80211_ptr);
7576         if (wdev->valid_links) {
7577                 if (params.link_sta_params.link_id < 0) {
7578                         err = -EINVAL;
7579                         goto out;
7580                 }
7581                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7582                         err = -ENOLINK;
7583                         goto out;
7584                 }
7585         } else {
7586                 if (params.link_sta_params.link_id >= 0) {
7587                         err = -EINVAL;
7588                         goto out;
7589                 }
7590         }
7591         err = rdev_add_station(rdev, dev, mac_addr, &params);
7592 out:
7593         wdev_unlock(dev->ieee80211_ptr);
7594         dev_put(params.vlan);
7595         return err;
7596 }
7597
7598 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7599 {
7600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7601         struct net_device *dev = info->user_ptr[1];
7602         struct station_del_parameters params;
7603         int ret;
7604
7605         memset(&params, 0, sizeof(params));
7606
7607         if (info->attrs[NL80211_ATTR_MAC])
7608                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7609
7610         switch (dev->ieee80211_ptr->iftype) {
7611         case NL80211_IFTYPE_AP:
7612         case NL80211_IFTYPE_AP_VLAN:
7613         case NL80211_IFTYPE_MESH_POINT:
7614         case NL80211_IFTYPE_P2P_GO:
7615                 /* always accept these */
7616                 break;
7617         case NL80211_IFTYPE_ADHOC:
7618                 /* conditionally accept */
7619                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7620                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7621                         break;
7622                 return -EINVAL;
7623         default:
7624                 return -EINVAL;
7625         }
7626
7627         if (!rdev->ops->del_station)
7628                 return -EOPNOTSUPP;
7629
7630         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7631                 params.subtype =
7632                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7633                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7634                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7635                         return -EINVAL;
7636         } else {
7637                 /* Default to Deauthentication frame */
7638                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7639         }
7640
7641         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7642                 params.reason_code =
7643                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7644                 if (params.reason_code == 0)
7645                         return -EINVAL; /* 0 is reserved */
7646         } else {
7647                 /* Default to reason code 2 */
7648                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7649         }
7650
7651         wdev_lock(dev->ieee80211_ptr);
7652         ret = rdev_del_station(rdev, dev, &params);
7653         wdev_unlock(dev->ieee80211_ptr);
7654
7655         return ret;
7656 }
7657
7658 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7659                                 int flags, struct net_device *dev,
7660                                 u8 *dst, u8 *next_hop,
7661                                 struct mpath_info *pinfo)
7662 {
7663         void *hdr;
7664         struct nlattr *pinfoattr;
7665
7666         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7667         if (!hdr)
7668                 return -1;
7669
7670         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7671             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7672             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7673             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7674                 goto nla_put_failure;
7675
7676         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7677         if (!pinfoattr)
7678                 goto nla_put_failure;
7679         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7680             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7681                         pinfo->frame_qlen))
7682                 goto nla_put_failure;
7683         if (((pinfo->filled & MPATH_INFO_SN) &&
7684              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7685             ((pinfo->filled & MPATH_INFO_METRIC) &&
7686              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7687                          pinfo->metric)) ||
7688             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7689              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7690                          pinfo->exptime)) ||
7691             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7692              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7693                         pinfo->flags)) ||
7694             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7695              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7696                          pinfo->discovery_timeout)) ||
7697             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7698              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7699                         pinfo->discovery_retries)) ||
7700             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7701              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7702                         pinfo->hop_count)) ||
7703             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7704              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7705                          pinfo->path_change_count)))
7706                 goto nla_put_failure;
7707
7708         nla_nest_end(msg, pinfoattr);
7709
7710         genlmsg_end(msg, hdr);
7711         return 0;
7712
7713  nla_put_failure:
7714         genlmsg_cancel(msg, hdr);
7715         return -EMSGSIZE;
7716 }
7717
7718 static int nl80211_dump_mpath(struct sk_buff *skb,
7719                               struct netlink_callback *cb)
7720 {
7721         struct mpath_info pinfo;
7722         struct cfg80211_registered_device *rdev;
7723         struct wireless_dev *wdev;
7724         u8 dst[ETH_ALEN];
7725         u8 next_hop[ETH_ALEN];
7726         int path_idx = cb->args[2];
7727         int err;
7728
7729         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7730         if (err)
7731                 return err;
7732         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7733         __acquire(&rdev->wiphy.mtx);
7734
7735         if (!rdev->ops->dump_mpath) {
7736                 err = -EOPNOTSUPP;
7737                 goto out_err;
7738         }
7739
7740         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7741                 err = -EOPNOTSUPP;
7742                 goto out_err;
7743         }
7744
7745         while (1) {
7746                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7747                                       next_hop, &pinfo);
7748                 if (err == -ENOENT)
7749                         break;
7750                 if (err)
7751                         goto out_err;
7752
7753                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7754                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7755                                        wdev->netdev, dst, next_hop,
7756                                        &pinfo) < 0)
7757                         goto out;
7758
7759                 path_idx++;
7760         }
7761
7762  out:
7763         cb->args[2] = path_idx;
7764         err = skb->len;
7765  out_err:
7766         wiphy_unlock(&rdev->wiphy);
7767         return err;
7768 }
7769
7770 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7771 {
7772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7773         int err;
7774         struct net_device *dev = info->user_ptr[1];
7775         struct mpath_info pinfo;
7776         struct sk_buff *msg;
7777         u8 *dst = NULL;
7778         u8 next_hop[ETH_ALEN];
7779
7780         memset(&pinfo, 0, sizeof(pinfo));
7781
7782         if (!info->attrs[NL80211_ATTR_MAC])
7783                 return -EINVAL;
7784
7785         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7786
7787         if (!rdev->ops->get_mpath)
7788                 return -EOPNOTSUPP;
7789
7790         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7791                 return -EOPNOTSUPP;
7792
7793         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7794         if (err)
7795                 return err;
7796
7797         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7798         if (!msg)
7799                 return -ENOMEM;
7800
7801         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7802                                  dev, dst, next_hop, &pinfo) < 0) {
7803                 nlmsg_free(msg);
7804                 return -ENOBUFS;
7805         }
7806
7807         return genlmsg_reply(msg, info);
7808 }
7809
7810 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7811 {
7812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7813         struct net_device *dev = info->user_ptr[1];
7814         u8 *dst = NULL;
7815         u8 *next_hop = NULL;
7816
7817         if (!info->attrs[NL80211_ATTR_MAC])
7818                 return -EINVAL;
7819
7820         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7821                 return -EINVAL;
7822
7823         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7824         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7825
7826         if (!rdev->ops->change_mpath)
7827                 return -EOPNOTSUPP;
7828
7829         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7830                 return -EOPNOTSUPP;
7831
7832         return rdev_change_mpath(rdev, dev, dst, next_hop);
7833 }
7834
7835 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7836 {
7837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7838         struct net_device *dev = info->user_ptr[1];
7839         u8 *dst = NULL;
7840         u8 *next_hop = NULL;
7841
7842         if (!info->attrs[NL80211_ATTR_MAC])
7843                 return -EINVAL;
7844
7845         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7846                 return -EINVAL;
7847
7848         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7849         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7850
7851         if (!rdev->ops->add_mpath)
7852                 return -EOPNOTSUPP;
7853
7854         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7855                 return -EOPNOTSUPP;
7856
7857         return rdev_add_mpath(rdev, dev, dst, next_hop);
7858 }
7859
7860 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7861 {
7862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7863         struct net_device *dev = info->user_ptr[1];
7864         u8 *dst = NULL;
7865
7866         if (info->attrs[NL80211_ATTR_MAC])
7867                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7868
7869         if (!rdev->ops->del_mpath)
7870                 return -EOPNOTSUPP;
7871
7872         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7873                 return -EOPNOTSUPP;
7874
7875         return rdev_del_mpath(rdev, dev, dst);
7876 }
7877
7878 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7879 {
7880         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7881         int err;
7882         struct net_device *dev = info->user_ptr[1];
7883         struct mpath_info pinfo;
7884         struct sk_buff *msg;
7885         u8 *dst = NULL;
7886         u8 mpp[ETH_ALEN];
7887
7888         memset(&pinfo, 0, sizeof(pinfo));
7889
7890         if (!info->attrs[NL80211_ATTR_MAC])
7891                 return -EINVAL;
7892
7893         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7894
7895         if (!rdev->ops->get_mpp)
7896                 return -EOPNOTSUPP;
7897
7898         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7899                 return -EOPNOTSUPP;
7900
7901         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7902         if (err)
7903                 return err;
7904
7905         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7906         if (!msg)
7907                 return -ENOMEM;
7908
7909         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7910                                dev, dst, mpp, &pinfo) < 0) {
7911                 nlmsg_free(msg);
7912                 return -ENOBUFS;
7913         }
7914
7915         return genlmsg_reply(msg, info);
7916 }
7917
7918 static int nl80211_dump_mpp(struct sk_buff *skb,
7919                             struct netlink_callback *cb)
7920 {
7921         struct mpath_info pinfo;
7922         struct cfg80211_registered_device *rdev;
7923         struct wireless_dev *wdev;
7924         u8 dst[ETH_ALEN];
7925         u8 mpp[ETH_ALEN];
7926         int path_idx = cb->args[2];
7927         int err;
7928
7929         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7930         if (err)
7931                 return err;
7932         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7933         __acquire(&rdev->wiphy.mtx);
7934
7935         if (!rdev->ops->dump_mpp) {
7936                 err = -EOPNOTSUPP;
7937                 goto out_err;
7938         }
7939
7940         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7941                 err = -EOPNOTSUPP;
7942                 goto out_err;
7943         }
7944
7945         while (1) {
7946                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7947                                     mpp, &pinfo);
7948                 if (err == -ENOENT)
7949                         break;
7950                 if (err)
7951                         goto out_err;
7952
7953                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7954                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7955                                        wdev->netdev, dst, mpp,
7956                                        &pinfo) < 0)
7957                         goto out;
7958
7959                 path_idx++;
7960         }
7961
7962  out:
7963         cb->args[2] = path_idx;
7964         err = skb->len;
7965  out_err:
7966         wiphy_unlock(&rdev->wiphy);
7967         return err;
7968 }
7969
7970 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7971 {
7972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7973         struct net_device *dev = info->user_ptr[1];
7974         struct wireless_dev *wdev = dev->ieee80211_ptr;
7975         struct bss_parameters params;
7976         int err;
7977
7978         memset(&params, 0, sizeof(params));
7979         params.link_id = nl80211_link_id_or_invalid(info->attrs);
7980         /* default to not changing parameters */
7981         params.use_cts_prot = -1;
7982         params.use_short_preamble = -1;
7983         params.use_short_slot_time = -1;
7984         params.ap_isolate = -1;
7985         params.ht_opmode = -1;
7986         params.p2p_ctwindow = -1;
7987         params.p2p_opp_ps = -1;
7988
7989         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7990                 params.use_cts_prot =
7991                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7992         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7993                 params.use_short_preamble =
7994                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7995         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7996                 params.use_short_slot_time =
7997                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7998         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7999                 params.basic_rates =
8000                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8001                 params.basic_rates_len =
8002                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8003         }
8004         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8005                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8006         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8007                 params.ht_opmode =
8008                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8009
8010         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8011                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8012                         return -EINVAL;
8013                 params.p2p_ctwindow =
8014                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8015                 if (params.p2p_ctwindow != 0 &&
8016                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8017                         return -EINVAL;
8018         }
8019
8020         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8021                 u8 tmp;
8022
8023                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8024                         return -EINVAL;
8025                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8026                 params.p2p_opp_ps = tmp;
8027                 if (params.p2p_opp_ps &&
8028                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8029                         return -EINVAL;
8030         }
8031
8032         if (!rdev->ops->change_bss)
8033                 return -EOPNOTSUPP;
8034
8035         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8036             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8037                 return -EOPNOTSUPP;
8038
8039         wdev_lock(wdev);
8040         err = rdev_change_bss(rdev, dev, &params);
8041         wdev_unlock(wdev);
8042
8043         return err;
8044 }
8045
8046 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8047 {
8048         char *data = NULL;
8049         bool is_indoor;
8050         enum nl80211_user_reg_hint_type user_reg_hint_type;
8051         u32 owner_nlportid;
8052
8053         /*
8054          * You should only get this when cfg80211 hasn't yet initialized
8055          * completely when built-in to the kernel right between the time
8056          * window between nl80211_init() and regulatory_init(), if that is
8057          * even possible.
8058          */
8059         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8060                 return -EINPROGRESS;
8061
8062         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8063                 user_reg_hint_type =
8064                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8065         else
8066                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8067
8068         switch (user_reg_hint_type) {
8069         case NL80211_USER_REG_HINT_USER:
8070         case NL80211_USER_REG_HINT_CELL_BASE:
8071                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8072                         return -EINVAL;
8073
8074                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8075                 return regulatory_hint_user(data, user_reg_hint_type);
8076         case NL80211_USER_REG_HINT_INDOOR:
8077                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8078                         owner_nlportid = info->snd_portid;
8079                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8080                 } else {
8081                         owner_nlportid = 0;
8082                         is_indoor = true;
8083                 }
8084
8085                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8086         default:
8087                 return -EINVAL;
8088         }
8089 }
8090
8091 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8092 {
8093         return reg_reload_regdb();
8094 }
8095
8096 static int nl80211_get_mesh_config(struct sk_buff *skb,
8097                                    struct genl_info *info)
8098 {
8099         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8100         struct net_device *dev = info->user_ptr[1];
8101         struct wireless_dev *wdev = dev->ieee80211_ptr;
8102         struct mesh_config cur_params;
8103         int err = 0;
8104         void *hdr;
8105         struct nlattr *pinfoattr;
8106         struct sk_buff *msg;
8107
8108         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8109                 return -EOPNOTSUPP;
8110
8111         if (!rdev->ops->get_mesh_config)
8112                 return -EOPNOTSUPP;
8113
8114         wdev_lock(wdev);
8115         /* If not connected, get default parameters */
8116         if (!wdev->u.mesh.id_len)
8117                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8118         else
8119                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8120         wdev_unlock(wdev);
8121
8122         if (err)
8123                 return err;
8124
8125         /* Draw up a netlink message to send back */
8126         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8127         if (!msg)
8128                 return -ENOMEM;
8129         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8130                              NL80211_CMD_GET_MESH_CONFIG);
8131         if (!hdr)
8132                 goto out;
8133         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8134         if (!pinfoattr)
8135                 goto nla_put_failure;
8136         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8137             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8138                         cur_params.dot11MeshRetryTimeout) ||
8139             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8140                         cur_params.dot11MeshConfirmTimeout) ||
8141             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8142                         cur_params.dot11MeshHoldingTimeout) ||
8143             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8144                         cur_params.dot11MeshMaxPeerLinks) ||
8145             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8146                        cur_params.dot11MeshMaxRetries) ||
8147             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8148                        cur_params.dot11MeshTTL) ||
8149             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8150                        cur_params.element_ttl) ||
8151             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8152                        cur_params.auto_open_plinks) ||
8153             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8154                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8155             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8156                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8157             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8158                         cur_params.path_refresh_time) ||
8159             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8160                         cur_params.min_discovery_timeout) ||
8161             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8162                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8163             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8164                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8165             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8166                         cur_params.dot11MeshHWMPperrMinInterval) ||
8167             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8168                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8169             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8170                        cur_params.dot11MeshHWMPRootMode) ||
8171             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8172                         cur_params.dot11MeshHWMPRannInterval) ||
8173             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8174                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8175             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8176                        cur_params.dot11MeshForwarding) ||
8177             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8178                         cur_params.rssi_threshold) ||
8179             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8180                         cur_params.ht_opmode) ||
8181             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8182                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8183             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8184                         cur_params.dot11MeshHWMProotInterval) ||
8185             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8186                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8187             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8188                         cur_params.power_mode) ||
8189             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8190                         cur_params.dot11MeshAwakeWindowDuration) ||
8191             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8192                         cur_params.plink_timeout) ||
8193             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8194                        cur_params.dot11MeshConnectedToMeshGate) ||
8195             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8196                        cur_params.dot11MeshNolearn) ||
8197             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8198                        cur_params.dot11MeshConnectedToAuthServer))
8199                 goto nla_put_failure;
8200         nla_nest_end(msg, pinfoattr);
8201         genlmsg_end(msg, hdr);
8202         return genlmsg_reply(msg, info);
8203
8204  nla_put_failure:
8205  out:
8206         nlmsg_free(msg);
8207         return -ENOBUFS;
8208 }
8209
8210 static const struct nla_policy
8211 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8212         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8213                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8214         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8215                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8216         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8217                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8218         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8219                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8220         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8221         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8222         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8223         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8224         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8225                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8226         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8227         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8228         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8229         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8230         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8231                 NLA_POLICY_MIN(NLA_U16, 1),
8232         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8233                 NLA_POLICY_MIN(NLA_U16, 1),
8234         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8235                 NLA_POLICY_MIN(NLA_U16, 1),
8236         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8237         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8238                 NLA_POLICY_MIN(NLA_U16, 1),
8239         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8240         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8241         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8242                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8243         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8244         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8245         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8246                 NLA_POLICY_MIN(NLA_U16, 1),
8247         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8248                 NLA_POLICY_MIN(NLA_U16, 1),
8249         [NL80211_MESHCONF_POWER_MODE] =
8250                 NLA_POLICY_RANGE(NLA_U32,
8251                                  NL80211_MESH_POWER_ACTIVE,
8252                                  NL80211_MESH_POWER_MAX),
8253         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8254         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8255         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8256         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8257         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8258 };
8259
8260 static const struct nla_policy
8261         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8262         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8263         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8264         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8265         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8266         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8267         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8268         [NL80211_MESH_SETUP_IE] =
8269                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8270                                        IEEE80211_MAX_DATA_LEN),
8271         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8272 };
8273
8274 static int nl80211_parse_mesh_config(struct genl_info *info,
8275                                      struct mesh_config *cfg,
8276                                      u32 *mask_out)
8277 {
8278         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8279         u32 mask = 0;
8280         u16 ht_opmode;
8281
8282 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8283 do {                                                                    \
8284         if (tb[attr]) {                                                 \
8285                 cfg->param = fn(tb[attr]);                              \
8286                 mask |= BIT((attr) - 1);                                \
8287         }                                                               \
8288 } while (0)
8289
8290         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8291                 return -EINVAL;
8292         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8293                 return -EINVAL;
8294
8295         /* This makes sure that there aren't more than 32 mesh config
8296          * parameters (otherwise our bitfield scheme would not work.) */
8297         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8298
8299         /* Fill in the params struct */
8300         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8301                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8302         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8303                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8304                                   nla_get_u16);
8305         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8306                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8307                                   nla_get_u16);
8308         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8309                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8310                                   nla_get_u16);
8311         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8312                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8313         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8314                                   NL80211_MESHCONF_TTL, nla_get_u8);
8315         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8316                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8317         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8318                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8319                                   nla_get_u8);
8320         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8321                                   mask,
8322                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8323                                   nla_get_u32);
8324         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8325                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8326                                   nla_get_u8);
8327         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8328                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8329                                   nla_get_u32);
8330         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8331             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8332                 return -EINVAL;
8333         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8334                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8335                                   nla_get_u16);
8336         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8337                                   mask,
8338                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8339                                   nla_get_u32);
8340         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8341             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8342              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8343                 return -EINVAL;
8344         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8345                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8346                                   nla_get_u16);
8347         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8348                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8349                                   nla_get_u16);
8350         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8351                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8352                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8353                                   nla_get_u16);
8354         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8355                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8356         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8357                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8358                                   nla_get_u16);
8359         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8360                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8361                                   nla_get_u8);
8362         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8363                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8364         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8365                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8366                                   nla_get_s32);
8367         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8368                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8369                                   nla_get_u8);
8370         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8371                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8372                                   nla_get_u8);
8373         /*
8374          * Check HT operation mode based on
8375          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8376          */
8377         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8378                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8379
8380                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8381                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8382                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8383                         return -EINVAL;
8384
8385                 /* NON_HT_STA bit is reserved, but some programs set it */
8386                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8387
8388                 cfg->ht_opmode = ht_opmode;
8389                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8390         }
8391         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8392                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8393                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8394                                   nla_get_u32);
8395         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8396             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8397              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8398                 return -EINVAL;
8399         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8400                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8401                                   nla_get_u16);
8402         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8403                                   mask,
8404                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8405                                   nla_get_u16);
8406         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8407                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8408         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8409                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8410         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8411                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8412         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8413                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8414         if (mask_out)
8415                 *mask_out = mask;
8416
8417         return 0;
8418
8419 #undef FILL_IN_MESH_PARAM_IF_SET
8420 }
8421
8422 static int nl80211_parse_mesh_setup(struct genl_info *info,
8423                                      struct mesh_setup *setup)
8424 {
8425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8426         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8427
8428         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8429                 return -EINVAL;
8430         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8431                 return -EINVAL;
8432
8433         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8434                 setup->sync_method =
8435                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8436                  IEEE80211_SYNC_METHOD_VENDOR :
8437                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8438
8439         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8440                 setup->path_sel_proto =
8441                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8442                  IEEE80211_PATH_PROTOCOL_VENDOR :
8443                  IEEE80211_PATH_PROTOCOL_HWMP;
8444
8445         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8446                 setup->path_metric =
8447                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8448                  IEEE80211_PATH_METRIC_VENDOR :
8449                  IEEE80211_PATH_METRIC_AIRTIME;
8450
8451         if (tb[NL80211_MESH_SETUP_IE]) {
8452                 struct nlattr *ieattr =
8453                         tb[NL80211_MESH_SETUP_IE];
8454                 setup->ie = nla_data(ieattr);
8455                 setup->ie_len = nla_len(ieattr);
8456         }
8457         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8458             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8459                 return -EINVAL;
8460         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8461         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8462         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8463         if (setup->is_secure)
8464                 setup->user_mpm = true;
8465
8466         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8467                 if (!setup->user_mpm)
8468                         return -EINVAL;
8469                 setup->auth_id =
8470                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8471         }
8472
8473         return 0;
8474 }
8475
8476 static int nl80211_update_mesh_config(struct sk_buff *skb,
8477                                       struct genl_info *info)
8478 {
8479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8480         struct net_device *dev = info->user_ptr[1];
8481         struct wireless_dev *wdev = dev->ieee80211_ptr;
8482         struct mesh_config cfg;
8483         u32 mask;
8484         int err;
8485
8486         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8487                 return -EOPNOTSUPP;
8488
8489         if (!rdev->ops->update_mesh_config)
8490                 return -EOPNOTSUPP;
8491
8492         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8493         if (err)
8494                 return err;
8495
8496         wdev_lock(wdev);
8497         if (!wdev->u.mesh.id_len)
8498                 err = -ENOLINK;
8499
8500         if (!err)
8501                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8502
8503         wdev_unlock(wdev);
8504
8505         return err;
8506 }
8507
8508 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8509                               struct sk_buff *msg)
8510 {
8511         struct nlattr *nl_reg_rules;
8512         unsigned int i;
8513
8514         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8515             (regdom->dfs_region &&
8516              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8517                 goto nla_put_failure;
8518
8519         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8520         if (!nl_reg_rules)
8521                 goto nla_put_failure;
8522
8523         for (i = 0; i < regdom->n_reg_rules; i++) {
8524                 struct nlattr *nl_reg_rule;
8525                 const struct ieee80211_reg_rule *reg_rule;
8526                 const struct ieee80211_freq_range *freq_range;
8527                 const struct ieee80211_power_rule *power_rule;
8528                 unsigned int max_bandwidth_khz;
8529
8530                 reg_rule = &regdom->reg_rules[i];
8531                 freq_range = &reg_rule->freq_range;
8532                 power_rule = &reg_rule->power_rule;
8533
8534                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8535                 if (!nl_reg_rule)
8536                         goto nla_put_failure;
8537
8538                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8539                 if (!max_bandwidth_khz)
8540                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8541                                                                   reg_rule);
8542
8543                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8544                                 reg_rule->flags) ||
8545                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8546                                 freq_range->start_freq_khz) ||
8547                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8548                                 freq_range->end_freq_khz) ||
8549                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8550                                 max_bandwidth_khz) ||
8551                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8552                                 power_rule->max_antenna_gain) ||
8553                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8554                                 power_rule->max_eirp) ||
8555                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8556                                 reg_rule->dfs_cac_ms))
8557                         goto nla_put_failure;
8558
8559                 nla_nest_end(msg, nl_reg_rule);
8560         }
8561
8562         nla_nest_end(msg, nl_reg_rules);
8563         return 0;
8564
8565 nla_put_failure:
8566         return -EMSGSIZE;
8567 }
8568
8569 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8570 {
8571         const struct ieee80211_regdomain *regdom = NULL;
8572         struct cfg80211_registered_device *rdev;
8573         struct wiphy *wiphy = NULL;
8574         struct sk_buff *msg;
8575         int err = -EMSGSIZE;
8576         void *hdr;
8577
8578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8579         if (!msg)
8580                 return -ENOBUFS;
8581
8582         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8583                              NL80211_CMD_GET_REG);
8584         if (!hdr)
8585                 goto put_failure;
8586
8587         rtnl_lock();
8588
8589         if (info->attrs[NL80211_ATTR_WIPHY]) {
8590                 bool self_managed;
8591
8592                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8593                 if (IS_ERR(rdev)) {
8594                         err = PTR_ERR(rdev);
8595                         goto nla_put_failure;
8596                 }
8597
8598                 wiphy = &rdev->wiphy;
8599                 self_managed = wiphy->regulatory_flags &
8600                                REGULATORY_WIPHY_SELF_MANAGED;
8601
8602                 rcu_read_lock();
8603
8604                 regdom = get_wiphy_regdom(wiphy);
8605
8606                 /* a self-managed-reg device must have a private regdom */
8607                 if (WARN_ON(!regdom && self_managed)) {
8608                         err = -EINVAL;
8609                         goto nla_put_failure_rcu;
8610                 }
8611
8612                 if (regdom &&
8613                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8614                         goto nla_put_failure_rcu;
8615         } else {
8616                 rcu_read_lock();
8617         }
8618
8619         if (!wiphy && reg_last_request_cell_base() &&
8620             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8621                         NL80211_USER_REG_HINT_CELL_BASE))
8622                 goto nla_put_failure_rcu;
8623
8624         if (!regdom)
8625                 regdom = rcu_dereference(cfg80211_regdomain);
8626
8627         if (nl80211_put_regdom(regdom, msg))
8628                 goto nla_put_failure_rcu;
8629
8630         rcu_read_unlock();
8631
8632         genlmsg_end(msg, hdr);
8633         rtnl_unlock();
8634         return genlmsg_reply(msg, info);
8635
8636 nla_put_failure_rcu:
8637         rcu_read_unlock();
8638 nla_put_failure:
8639         rtnl_unlock();
8640 put_failure:
8641         nlmsg_free(msg);
8642         return err;
8643 }
8644
8645 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8646                                u32 seq, int flags, struct wiphy *wiphy,
8647                                const struct ieee80211_regdomain *regdom)
8648 {
8649         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8650                                    NL80211_CMD_GET_REG);
8651
8652         if (!hdr)
8653                 return -1;
8654
8655         genl_dump_check_consistent(cb, hdr);
8656
8657         if (nl80211_put_regdom(regdom, msg))
8658                 goto nla_put_failure;
8659
8660         if (!wiphy && reg_last_request_cell_base() &&
8661             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8662                         NL80211_USER_REG_HINT_CELL_BASE))
8663                 goto nla_put_failure;
8664
8665         if (wiphy &&
8666             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8667                 goto nla_put_failure;
8668
8669         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8670             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8671                 goto nla_put_failure;
8672
8673         genlmsg_end(msg, hdr);
8674         return 0;
8675
8676 nla_put_failure:
8677         genlmsg_cancel(msg, hdr);
8678         return -EMSGSIZE;
8679 }
8680
8681 static int nl80211_get_reg_dump(struct sk_buff *skb,
8682                                 struct netlink_callback *cb)
8683 {
8684         const struct ieee80211_regdomain *regdom = NULL;
8685         struct cfg80211_registered_device *rdev;
8686         int err, reg_idx, start = cb->args[2];
8687
8688         rcu_read_lock();
8689
8690         if (cfg80211_regdomain && start == 0) {
8691                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8692                                           NLM_F_MULTI, NULL,
8693                                           rcu_dereference(cfg80211_regdomain));
8694                 if (err < 0)
8695                         goto out_err;
8696         }
8697
8698         /* the global regdom is idx 0 */
8699         reg_idx = 1;
8700         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8701                 regdom = get_wiphy_regdom(&rdev->wiphy);
8702                 if (!regdom)
8703                         continue;
8704
8705                 if (++reg_idx <= start)
8706                         continue;
8707
8708                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8709                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8710                 if (err < 0) {
8711                         reg_idx--;
8712                         break;
8713                 }
8714         }
8715
8716         cb->args[2] = reg_idx;
8717         err = skb->len;
8718 out_err:
8719         rcu_read_unlock();
8720         return err;
8721 }
8722
8723 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8724 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8725         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8726         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8727         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8728         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8729         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8730         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8731         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8732 };
8733
8734 static int parse_reg_rule(struct nlattr *tb[],
8735         struct ieee80211_reg_rule *reg_rule)
8736 {
8737         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8738         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8739
8740         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8741                 return -EINVAL;
8742         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8743                 return -EINVAL;
8744         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8745                 return -EINVAL;
8746         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8747                 return -EINVAL;
8748         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8749                 return -EINVAL;
8750
8751         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8752
8753         freq_range->start_freq_khz =
8754                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8755         freq_range->end_freq_khz =
8756                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8757         freq_range->max_bandwidth_khz =
8758                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8759
8760         power_rule->max_eirp =
8761                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8762
8763         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8764                 power_rule->max_antenna_gain =
8765                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8766
8767         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8768                 reg_rule->dfs_cac_ms =
8769                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8770
8771         return 0;
8772 }
8773
8774 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8775 {
8776         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8777         struct nlattr *nl_reg_rule;
8778         char *alpha2;
8779         int rem_reg_rules, r;
8780         u32 num_rules = 0, rule_idx = 0;
8781         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8782         struct ieee80211_regdomain *rd;
8783
8784         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8785                 return -EINVAL;
8786
8787         if (!info->attrs[NL80211_ATTR_REG_RULES])
8788                 return -EINVAL;
8789
8790         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8791
8792         if (info->attrs[NL80211_ATTR_DFS_REGION])
8793                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8794
8795         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8796                             rem_reg_rules) {
8797                 num_rules++;
8798                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8799                         return -EINVAL;
8800         }
8801
8802         rtnl_lock();
8803         if (!reg_is_valid_request(alpha2)) {
8804                 r = -EINVAL;
8805                 goto out;
8806         }
8807
8808         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8809         if (!rd) {
8810                 r = -ENOMEM;
8811                 goto out;
8812         }
8813
8814         rd->n_reg_rules = num_rules;
8815         rd->alpha2[0] = alpha2[0];
8816         rd->alpha2[1] = alpha2[1];
8817
8818         /*
8819          * Disable DFS master mode if the DFS region was
8820          * not supported or known on this kernel.
8821          */
8822         if (reg_supported_dfs_region(dfs_region))
8823                 rd->dfs_region = dfs_region;
8824
8825         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8826                             rem_reg_rules) {
8827                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8828                                                 nl_reg_rule, reg_rule_policy,
8829                                                 info->extack);
8830                 if (r)
8831                         goto bad_reg;
8832                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8833                 if (r)
8834                         goto bad_reg;
8835
8836                 rule_idx++;
8837
8838                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8839                         r = -EINVAL;
8840                         goto bad_reg;
8841                 }
8842         }
8843
8844         r = set_regdom(rd, REGD_SOURCE_CRDA);
8845         /* set_regdom takes ownership of rd */
8846         rd = NULL;
8847  bad_reg:
8848         kfree(rd);
8849  out:
8850         rtnl_unlock();
8851         return r;
8852 }
8853 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8854
8855 static int validate_scan_freqs(struct nlattr *freqs)
8856 {
8857         struct nlattr *attr1, *attr2;
8858         int n_channels = 0, tmp1, tmp2;
8859
8860         nla_for_each_nested(attr1, freqs, tmp1)
8861                 if (nla_len(attr1) != sizeof(u32))
8862                         return 0;
8863
8864         nla_for_each_nested(attr1, freqs, tmp1) {
8865                 n_channels++;
8866                 /*
8867                  * Some hardware has a limited channel list for
8868                  * scanning, and it is pretty much nonsensical
8869                  * to scan for a channel twice, so disallow that
8870                  * and don't require drivers to check that the
8871                  * channel list they get isn't longer than what
8872                  * they can scan, as long as they can scan all
8873                  * the channels they registered at once.
8874                  */
8875                 nla_for_each_nested(attr2, freqs, tmp2)
8876                         if (attr1 != attr2 &&
8877                             nla_get_u32(attr1) == nla_get_u32(attr2))
8878                                 return 0;
8879         }
8880
8881         return n_channels;
8882 }
8883
8884 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8885 {
8886         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8887 }
8888
8889 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8890                             struct cfg80211_bss_selection *bss_select)
8891 {
8892         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8893         struct nlattr *nest;
8894         int err;
8895         bool found = false;
8896         int i;
8897
8898         /* only process one nested attribute */
8899         nest = nla_data(nla);
8900         if (!nla_ok(nest, nla_len(nest)))
8901                 return -EINVAL;
8902
8903         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8904                                           nest, nl80211_bss_select_policy,
8905                                           NULL);
8906         if (err)
8907                 return err;
8908
8909         /* only one attribute may be given */
8910         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8911                 if (attr[i]) {
8912                         if (found)
8913                                 return -EINVAL;
8914                         found = true;
8915                 }
8916         }
8917
8918         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8919
8920         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8921                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8922
8923         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8924                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8925                 bss_select->param.band_pref =
8926                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8927                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8928                         return -EINVAL;
8929         }
8930
8931         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8932                 struct nl80211_bss_select_rssi_adjust *adj_param;
8933
8934                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8935                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8936                 bss_select->param.adjust.band = adj_param->band;
8937                 bss_select->param.adjust.delta = adj_param->delta;
8938                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8939                         return -EINVAL;
8940         }
8941
8942         /* user-space did not provide behaviour attribute */
8943         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8944                 return -EINVAL;
8945
8946         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8947                 return -EINVAL;
8948
8949         return 0;
8950 }
8951
8952 int nl80211_parse_random_mac(struct nlattr **attrs,
8953                              u8 *mac_addr, u8 *mac_addr_mask)
8954 {
8955         int i;
8956
8957         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8958                 eth_zero_addr(mac_addr);
8959                 eth_zero_addr(mac_addr_mask);
8960                 mac_addr[0] = 0x2;
8961                 mac_addr_mask[0] = 0x3;
8962
8963                 return 0;
8964         }
8965
8966         /* need both or none */
8967         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8968                 return -EINVAL;
8969
8970         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8971         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8972
8973         /* don't allow or configure an mcast address */
8974         if (!is_multicast_ether_addr(mac_addr_mask) ||
8975             is_multicast_ether_addr(mac_addr))
8976                 return -EINVAL;
8977
8978         /*
8979          * allow users to pass a MAC address that has bits set outside
8980          * of the mask, but don't bother drivers with having to deal
8981          * with such bits
8982          */
8983         for (i = 0; i < ETH_ALEN; i++)
8984                 mac_addr[i] &= mac_addr_mask[i];
8985
8986         return 0;
8987 }
8988
8989 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8990                                               struct ieee80211_channel *chan)
8991 {
8992         unsigned int link_id;
8993         bool all_ok = true;
8994
8995         ASSERT_WDEV_LOCK(wdev);
8996
8997         if (!cfg80211_beaconing_iface_active(wdev))
8998                 return true;
8999
9000         /*
9001          * FIXME: check if we have a free HW resource/link for chan
9002          *
9003          * This, as well as the FIXME below, requires knowing the link
9004          * capabilities of the hardware.
9005          */
9006
9007         /* we cannot leave radar channels */
9008         for_each_valid_link(wdev, link_id) {
9009                 struct cfg80211_chan_def *chandef;
9010
9011                 chandef = wdev_chandef(wdev, link_id);
9012                 if (!chandef || !chandef->chan)
9013                         continue;
9014
9015                 /*
9016                  * FIXME: don't require all_ok, but rather check only the
9017                  *        correct HW resource/link onto which 'chan' falls,
9018                  *        as only that link leaves the channel for doing
9019                  *        the off-channel operation.
9020                  */
9021
9022                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9023                         all_ok = false;
9024         }
9025
9026         if (all_ok)
9027                 return true;
9028
9029         return regulatory_pre_cac_allowed(wdev->wiphy);
9030 }
9031
9032 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9033                                     enum nl80211_ext_feature_index feat)
9034 {
9035         if (!(flags & flag))
9036                 return true;
9037         if (wiphy_ext_feature_isset(wiphy, feat))
9038                 return true;
9039         return false;
9040 }
9041
9042 static int
9043 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9044                          void *request, struct nlattr **attrs,
9045                          bool is_sched_scan)
9046 {
9047         u8 *mac_addr, *mac_addr_mask;
9048         u32 *flags;
9049         enum nl80211_feature_flags randomness_flag;
9050
9051         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9052                 return 0;
9053
9054         if (is_sched_scan) {
9055                 struct cfg80211_sched_scan_request *req = request;
9056
9057                 randomness_flag = wdev ?
9058                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9059                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9060                 flags = &req->flags;
9061                 mac_addr = req->mac_addr;
9062                 mac_addr_mask = req->mac_addr_mask;
9063         } else {
9064                 struct cfg80211_scan_request *req = request;
9065
9066                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9067                 flags = &req->flags;
9068                 mac_addr = req->mac_addr;
9069                 mac_addr_mask = req->mac_addr_mask;
9070         }
9071
9072         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9073
9074         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9075              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9076             !nl80211_check_scan_feat(wiphy, *flags,
9077                                      NL80211_SCAN_FLAG_LOW_SPAN,
9078                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9079             !nl80211_check_scan_feat(wiphy, *flags,
9080                                      NL80211_SCAN_FLAG_LOW_POWER,
9081                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9082             !nl80211_check_scan_feat(wiphy, *flags,
9083                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9084                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9085             !nl80211_check_scan_feat(wiphy, *flags,
9086                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9087                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9088             !nl80211_check_scan_feat(wiphy, *flags,
9089                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9090                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9091             !nl80211_check_scan_feat(wiphy, *flags,
9092                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9093                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9094             !nl80211_check_scan_feat(wiphy, *flags,
9095                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9096                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9097             !nl80211_check_scan_feat(wiphy, *flags,
9098                                      NL80211_SCAN_FLAG_RANDOM_SN,
9099                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9100             !nl80211_check_scan_feat(wiphy, *flags,
9101                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9102                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9103                 return -EOPNOTSUPP;
9104
9105         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9106                 int err;
9107
9108                 if (!(wiphy->features & randomness_flag) ||
9109                     (wdev && wdev->connected))
9110                         return -EOPNOTSUPP;
9111
9112                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9113                 if (err)
9114                         return err;
9115         }
9116
9117         return 0;
9118 }
9119
9120 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9121 {
9122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9123         struct wireless_dev *wdev = info->user_ptr[1];
9124         struct cfg80211_scan_request *request;
9125         struct nlattr *scan_freqs = NULL;
9126         bool scan_freqs_khz = false;
9127         struct nlattr *attr;
9128         struct wiphy *wiphy;
9129         int err, tmp, n_ssids = 0, n_channels, i;
9130         size_t ie_len, size;
9131
9132         wiphy = &rdev->wiphy;
9133
9134         if (wdev->iftype == NL80211_IFTYPE_NAN)
9135                 return -EOPNOTSUPP;
9136
9137         if (!rdev->ops->scan)
9138                 return -EOPNOTSUPP;
9139
9140         if (rdev->scan_req || rdev->scan_msg)
9141                 return -EBUSY;
9142
9143         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9144                 if (!wiphy_ext_feature_isset(wiphy,
9145                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9146                         return -EOPNOTSUPP;
9147                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9148                 scan_freqs_khz = true;
9149         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9150                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9151
9152         if (scan_freqs) {
9153                 n_channels = validate_scan_freqs(scan_freqs);
9154                 if (!n_channels)
9155                         return -EINVAL;
9156         } else {
9157                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9158         }
9159
9160         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9161                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9162                         n_ssids++;
9163
9164         if (n_ssids > wiphy->max_scan_ssids)
9165                 return -EINVAL;
9166
9167         if (info->attrs[NL80211_ATTR_IE])
9168                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9169         else
9170                 ie_len = 0;
9171
9172         if (ie_len > wiphy->max_scan_ie_len)
9173                 return -EINVAL;
9174
9175         size = struct_size(request, channels, n_channels);
9176         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9177         size = size_add(size, ie_len);
9178         request = kzalloc(size, GFP_KERNEL);
9179         if (!request)
9180                 return -ENOMEM;
9181
9182         if (n_ssids)
9183                 request->ssids = (void *)&request->channels[n_channels];
9184         request->n_ssids = n_ssids;
9185         if (ie_len) {
9186                 if (n_ssids)
9187                         request->ie = (void *)(request->ssids + n_ssids);
9188                 else
9189                         request->ie = (void *)(request->channels + n_channels);
9190         }
9191
9192         i = 0;
9193         if (scan_freqs) {
9194                 /* user specified, bail out if channel not found */
9195                 nla_for_each_nested(attr, scan_freqs, tmp) {
9196                         struct ieee80211_channel *chan;
9197                         int freq = nla_get_u32(attr);
9198
9199                         if (!scan_freqs_khz)
9200                                 freq = MHZ_TO_KHZ(freq);
9201
9202                         chan = ieee80211_get_channel_khz(wiphy, freq);
9203                         if (!chan) {
9204                                 err = -EINVAL;
9205                                 goto out_free;
9206                         }
9207
9208                         /* ignore disabled channels */
9209                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9210                                 continue;
9211
9212                         request->channels[i] = chan;
9213                         i++;
9214                 }
9215         } else {
9216                 enum nl80211_band band;
9217
9218                 /* all channels */
9219                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9220                         int j;
9221
9222                         if (!wiphy->bands[band])
9223                                 continue;
9224                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9225                                 struct ieee80211_channel *chan;
9226
9227                                 chan = &wiphy->bands[band]->channels[j];
9228
9229                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9230                                         continue;
9231
9232                                 request->channels[i] = chan;
9233                                 i++;
9234                         }
9235                 }
9236         }
9237
9238         if (!i) {
9239                 err = -EINVAL;
9240                 goto out_free;
9241         }
9242
9243         request->n_channels = i;
9244
9245         wdev_lock(wdev);
9246         for (i = 0; i < request->n_channels; i++) {
9247                 struct ieee80211_channel *chan = request->channels[i];
9248
9249                 /* if we can go off-channel to the target channel we're good */
9250                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9251                         continue;
9252
9253                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9254                         wdev_unlock(wdev);
9255                         err = -EBUSY;
9256                         goto out_free;
9257                 }
9258         }
9259         wdev_unlock(wdev);
9260
9261         i = 0;
9262         if (n_ssids) {
9263                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9264                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9265                                 err = -EINVAL;
9266                                 goto out_free;
9267                         }
9268                         request->ssids[i].ssid_len = nla_len(attr);
9269                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9270                         i++;
9271                 }
9272         }
9273
9274         if (info->attrs[NL80211_ATTR_IE]) {
9275                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9276                 memcpy((void *)request->ie,
9277                        nla_data(info->attrs[NL80211_ATTR_IE]),
9278                        request->ie_len);
9279         }
9280
9281         for (i = 0; i < NUM_NL80211_BANDS; i++)
9282                 if (wiphy->bands[i])
9283                         request->rates[i] =
9284                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9285
9286         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9287                 nla_for_each_nested(attr,
9288                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9289                                     tmp) {
9290                         enum nl80211_band band = nla_type(attr);
9291
9292                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9293                                 err = -EINVAL;
9294                                 goto out_free;
9295                         }
9296
9297                         if (!wiphy->bands[band])
9298                                 continue;
9299
9300                         err = ieee80211_get_ratemask(wiphy->bands[band],
9301                                                      nla_data(attr),
9302                                                      nla_len(attr),
9303                                                      &request->rates[band]);
9304                         if (err)
9305                                 goto out_free;
9306                 }
9307         }
9308
9309         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9310                 request->duration =
9311                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9312                 request->duration_mandatory =
9313                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9314         }
9315
9316         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9317                                        false);
9318         if (err)
9319                 goto out_free;
9320
9321         request->no_cck =
9322                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9323
9324         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9325          * BSSID to scan for. This was problematic because that same attribute
9326          * was already used for another purpose (local random MAC address). The
9327          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9328          * compatibility with older userspace components, also use the
9329          * NL80211_ATTR_MAC value here if it can be determined to be used for
9330          * the specific BSSID use case instead of the random MAC address
9331          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9332          */
9333         if (info->attrs[NL80211_ATTR_BSSID])
9334                 memcpy(request->bssid,
9335                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9336         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9337                  info->attrs[NL80211_ATTR_MAC])
9338                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9339                        ETH_ALEN);
9340         else
9341                 eth_broadcast_addr(request->bssid);
9342
9343         request->wdev = wdev;
9344         request->wiphy = &rdev->wiphy;
9345         request->scan_start = jiffies;
9346
9347         rdev->scan_req = request;
9348         err = cfg80211_scan(rdev);
9349
9350         if (err)
9351                 goto out_free;
9352
9353         nl80211_send_scan_start(rdev, wdev);
9354         dev_hold(wdev->netdev);
9355
9356         return 0;
9357
9358  out_free:
9359         rdev->scan_req = NULL;
9360         kfree(request);
9361
9362         return err;
9363 }
9364
9365 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9366 {
9367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9368         struct wireless_dev *wdev = info->user_ptr[1];
9369
9370         if (!rdev->ops->abort_scan)
9371                 return -EOPNOTSUPP;
9372
9373         if (rdev->scan_msg)
9374                 return 0;
9375
9376         if (!rdev->scan_req)
9377                 return -ENOENT;
9378
9379         rdev_abort_scan(rdev, wdev);
9380         return 0;
9381 }
9382
9383 static int
9384 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9385                                struct cfg80211_sched_scan_request *request,
9386                                struct nlattr **attrs)
9387 {
9388         int tmp, err, i = 0;
9389         struct nlattr *attr;
9390
9391         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9392                 u32 interval;
9393
9394                 /*
9395                  * If scan plans are not specified,
9396                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9397                  * case one scan plan will be set with the specified scan
9398                  * interval and infinite number of iterations.
9399                  */
9400                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9401                 if (!interval)
9402                         return -EINVAL;
9403
9404                 request->scan_plans[0].interval =
9405                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9406                 if (!request->scan_plans[0].interval)
9407                         return -EINVAL;
9408
9409                 if (request->scan_plans[0].interval >
9410                     wiphy->max_sched_scan_plan_interval)
9411                         request->scan_plans[0].interval =
9412                                 wiphy->max_sched_scan_plan_interval;
9413
9414                 return 0;
9415         }
9416
9417         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9418                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9419
9420                 if (WARN_ON(i >= n_plans))
9421                         return -EINVAL;
9422
9423                 err = nla_parse_nested_deprecated(plan,
9424                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9425                                                   attr, nl80211_plan_policy,
9426                                                   NULL);
9427                 if (err)
9428                         return err;
9429
9430                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9431                         return -EINVAL;
9432
9433                 request->scan_plans[i].interval =
9434                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9435                 if (!request->scan_plans[i].interval ||
9436                     request->scan_plans[i].interval >
9437                     wiphy->max_sched_scan_plan_interval)
9438                         return -EINVAL;
9439
9440                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9441                         request->scan_plans[i].iterations =
9442                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9443                         if (!request->scan_plans[i].iterations ||
9444                             (request->scan_plans[i].iterations >
9445                              wiphy->max_sched_scan_plan_iterations))
9446                                 return -EINVAL;
9447                 } else if (i < n_plans - 1) {
9448                         /*
9449                          * All scan plans but the last one must specify
9450                          * a finite number of iterations
9451                          */
9452                         return -EINVAL;
9453                 }
9454
9455                 i++;
9456         }
9457
9458         /*
9459          * The last scan plan must not specify the number of
9460          * iterations, it is supposed to run infinitely
9461          */
9462         if (request->scan_plans[n_plans - 1].iterations)
9463                 return  -EINVAL;
9464
9465         return 0;
9466 }
9467
9468 static int
9469 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9470                                        struct cfg80211_match_set *match_sets,
9471                                        struct nlattr *tb_band_rssi,
9472                                        s32 rssi_thold)
9473 {
9474         struct nlattr *attr;
9475         int i, tmp, ret = 0;
9476
9477         if (!wiphy_ext_feature_isset(wiphy,
9478                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9479                 if (tb_band_rssi)
9480                         ret = -EOPNOTSUPP;
9481                 else
9482                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9483                                 match_sets->per_band_rssi_thold[i] =
9484                                         NL80211_SCAN_RSSI_THOLD_OFF;
9485                 return ret;
9486         }
9487
9488         for (i = 0; i < NUM_NL80211_BANDS; i++)
9489                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9490
9491         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9492                 enum nl80211_band band = nla_type(attr);
9493
9494                 if (band < 0 || band >= NUM_NL80211_BANDS)
9495                         return -EINVAL;
9496
9497                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9498         }
9499
9500         return 0;
9501 }
9502
9503 static struct cfg80211_sched_scan_request *
9504 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9505                          struct nlattr **attrs, int max_match_sets)
9506 {
9507         struct cfg80211_sched_scan_request *request;
9508         struct nlattr *attr;
9509         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9510         enum nl80211_band band;
9511         size_t ie_len, size;
9512         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9513         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9514
9515         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9516                 n_channels = validate_scan_freqs(
9517                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9518                 if (!n_channels)
9519                         return ERR_PTR(-EINVAL);
9520         } else {
9521                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9522         }
9523
9524         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9525                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9526                                     tmp)
9527                         n_ssids++;
9528
9529         if (n_ssids > wiphy->max_sched_scan_ssids)
9530                 return ERR_PTR(-EINVAL);
9531
9532         /*
9533          * First, count the number of 'real' matchsets. Due to an issue with
9534          * the old implementation, matchsets containing only the RSSI attribute
9535          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9536          * RSSI for all matchsets, rather than their own matchset for reporting
9537          * all APs with a strong RSSI. This is needed to be compatible with
9538          * older userspace that treated a matchset with only the RSSI as the
9539          * global RSSI for all other matchsets - if there are other matchsets.
9540          */
9541         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9542                 nla_for_each_nested(attr,
9543                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9544                                     tmp) {
9545                         struct nlattr *rssi;
9546
9547                         err = nla_parse_nested_deprecated(tb,
9548                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9549                                                           attr,
9550                                                           nl80211_match_policy,
9551                                                           NULL);
9552                         if (err)
9553                                 return ERR_PTR(err);
9554
9555                         /* SSID and BSSID are mutually exclusive */
9556                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9557                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9558                                 return ERR_PTR(-EINVAL);
9559
9560                         /* add other standalone attributes here */
9561                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9562                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9563                                 n_match_sets++;
9564                                 continue;
9565                         }
9566                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9567                         if (rssi)
9568                                 default_match_rssi = nla_get_s32(rssi);
9569                 }
9570         }
9571
9572         /* However, if there's no other matchset, add the RSSI one */
9573         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9574                 n_match_sets = 1;
9575
9576         if (n_match_sets > max_match_sets)
9577                 return ERR_PTR(-EINVAL);
9578
9579         if (attrs[NL80211_ATTR_IE])
9580                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9581         else
9582                 ie_len = 0;
9583
9584         if (ie_len > wiphy->max_sched_scan_ie_len)
9585                 return ERR_PTR(-EINVAL);
9586
9587         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9588                 /*
9589                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9590                  * each scan plan already specifies its own interval
9591                  */
9592                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9593                         return ERR_PTR(-EINVAL);
9594
9595                 nla_for_each_nested(attr,
9596                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9597                         n_plans++;
9598         } else {
9599                 /*
9600                  * The scan interval attribute is kept for backward
9601                  * compatibility. If no scan plans are specified and sched scan
9602                  * interval is specified, one scan plan will be set with this
9603                  * scan interval and infinite number of iterations.
9604                  */
9605                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9606                         return ERR_PTR(-EINVAL);
9607
9608                 n_plans = 1;
9609         }
9610
9611         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9612                 return ERR_PTR(-EINVAL);
9613
9614         if (!wiphy_ext_feature_isset(
9615                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9616             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9617              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9618                 return ERR_PTR(-EINVAL);
9619
9620         size = struct_size(request, channels, n_channels);
9621         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9622         size = size_add(size, array_size(sizeof(*request->match_sets),
9623                                          n_match_sets));
9624         size = size_add(size, array_size(sizeof(*request->scan_plans),
9625                                          n_plans));
9626         size = size_add(size, ie_len);
9627         request = kzalloc(size, GFP_KERNEL);
9628         if (!request)
9629                 return ERR_PTR(-ENOMEM);
9630
9631         if (n_ssids)
9632                 request->ssids = (void *)&request->channels[n_channels];
9633         request->n_ssids = n_ssids;
9634         if (ie_len) {
9635                 if (n_ssids)
9636                         request->ie = (void *)(request->ssids + n_ssids);
9637                 else
9638                         request->ie = (void *)(request->channels + n_channels);
9639         }
9640
9641         if (n_match_sets) {
9642                 if (request->ie)
9643                         request->match_sets = (void *)(request->ie + ie_len);
9644                 else if (n_ssids)
9645                         request->match_sets =
9646                                 (void *)(request->ssids + n_ssids);
9647                 else
9648                         request->match_sets =
9649                                 (void *)(request->channels + n_channels);
9650         }
9651         request->n_match_sets = n_match_sets;
9652
9653         if (n_match_sets)
9654                 request->scan_plans = (void *)(request->match_sets +
9655                                                n_match_sets);
9656         else if (request->ie)
9657                 request->scan_plans = (void *)(request->ie + ie_len);
9658         else if (n_ssids)
9659                 request->scan_plans = (void *)(request->ssids + n_ssids);
9660         else
9661                 request->scan_plans = (void *)(request->channels + n_channels);
9662
9663         request->n_scan_plans = n_plans;
9664
9665         i = 0;
9666         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9667                 /* user specified, bail out if channel not found */
9668                 nla_for_each_nested(attr,
9669                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9670                                     tmp) {
9671                         struct ieee80211_channel *chan;
9672
9673                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9674
9675                         if (!chan) {
9676                                 err = -EINVAL;
9677                                 goto out_free;
9678                         }
9679
9680                         /* ignore disabled channels */
9681                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9682                                 continue;
9683
9684                         request->channels[i] = chan;
9685                         i++;
9686                 }
9687         } else {
9688                 /* all channels */
9689                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9690                         int j;
9691
9692                         if (!wiphy->bands[band])
9693                                 continue;
9694                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9695                                 struct ieee80211_channel *chan;
9696
9697                                 chan = &wiphy->bands[band]->channels[j];
9698
9699                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9700                                         continue;
9701
9702                                 request->channels[i] = chan;
9703                                 i++;
9704                         }
9705                 }
9706         }
9707
9708         if (!i) {
9709                 err = -EINVAL;
9710                 goto out_free;
9711         }
9712
9713         request->n_channels = i;
9714
9715         i = 0;
9716         if (n_ssids) {
9717                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9718                                     tmp) {
9719                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9720                                 err = -EINVAL;
9721                                 goto out_free;
9722                         }
9723                         request->ssids[i].ssid_len = nla_len(attr);
9724                         memcpy(request->ssids[i].ssid, nla_data(attr),
9725                                nla_len(attr));
9726                         i++;
9727                 }
9728         }
9729
9730         i = 0;
9731         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9732                 nla_for_each_nested(attr,
9733                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9734                                     tmp) {
9735                         struct nlattr *ssid, *bssid, *rssi;
9736
9737                         err = nla_parse_nested_deprecated(tb,
9738                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9739                                                           attr,
9740                                                           nl80211_match_policy,
9741                                                           NULL);
9742                         if (err)
9743                                 goto out_free;
9744                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9745                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9746
9747                         if (!ssid && !bssid) {
9748                                 i++;
9749                                 continue;
9750                         }
9751
9752                         if (WARN_ON(i >= n_match_sets)) {
9753                                 /* this indicates a programming error,
9754                                  * the loop above should have verified
9755                                  * things properly
9756                                  */
9757                                 err = -EINVAL;
9758                                 goto out_free;
9759                         }
9760
9761                         if (ssid) {
9762                                 memcpy(request->match_sets[i].ssid.ssid,
9763                                        nla_data(ssid), nla_len(ssid));
9764                                 request->match_sets[i].ssid.ssid_len =
9765                                         nla_len(ssid);
9766                         }
9767                         if (bssid)
9768                                 memcpy(request->match_sets[i].bssid,
9769                                        nla_data(bssid), ETH_ALEN);
9770
9771                         /* special attribute - old implementation w/a */
9772                         request->match_sets[i].rssi_thold = default_match_rssi;
9773                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9774                         if (rssi)
9775                                 request->match_sets[i].rssi_thold =
9776                                         nla_get_s32(rssi);
9777
9778                         /* Parse per band RSSI attribute */
9779                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9780                                 &request->match_sets[i],
9781                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9782                                 request->match_sets[i].rssi_thold);
9783                         if (err)
9784                                 goto out_free;
9785
9786                         i++;
9787                 }
9788
9789                 /* there was no other matchset, so the RSSI one is alone */
9790                 if (i == 0 && n_match_sets)
9791                         request->match_sets[0].rssi_thold = default_match_rssi;
9792
9793                 request->min_rssi_thold = INT_MAX;
9794                 for (i = 0; i < n_match_sets; i++)
9795                         request->min_rssi_thold =
9796                                 min(request->match_sets[i].rssi_thold,
9797                                     request->min_rssi_thold);
9798         } else {
9799                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9800         }
9801
9802         if (ie_len) {
9803                 request->ie_len = ie_len;
9804                 memcpy((void *)request->ie,
9805                        nla_data(attrs[NL80211_ATTR_IE]),
9806                        request->ie_len);
9807         }
9808
9809         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9810         if (err)
9811                 goto out_free;
9812
9813         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9814                 request->delay =
9815                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9816
9817         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9818                 request->relative_rssi = nla_get_s8(
9819                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9820                 request->relative_rssi_set = true;
9821         }
9822
9823         if (request->relative_rssi_set &&
9824             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9825                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9826
9827                 rssi_adjust = nla_data(
9828                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9829                 request->rssi_adjust.band = rssi_adjust->band;
9830                 request->rssi_adjust.delta = rssi_adjust->delta;
9831                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9832                         err = -EINVAL;
9833                         goto out_free;
9834                 }
9835         }
9836
9837         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9838         if (err)
9839                 goto out_free;
9840
9841         request->scan_start = jiffies;
9842
9843         return request;
9844
9845 out_free:
9846         kfree(request);
9847         return ERR_PTR(err);
9848 }
9849
9850 static int nl80211_start_sched_scan(struct sk_buff *skb,
9851                                     struct genl_info *info)
9852 {
9853         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9854         struct net_device *dev = info->user_ptr[1];
9855         struct wireless_dev *wdev = dev->ieee80211_ptr;
9856         struct cfg80211_sched_scan_request *sched_scan_req;
9857         bool want_multi;
9858         int err;
9859
9860         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9861                 return -EOPNOTSUPP;
9862
9863         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9864         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9865         if (err)
9866                 return err;
9867
9868         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9869                                                   info->attrs,
9870                                                   rdev->wiphy.max_match_sets);
9871
9872         err = PTR_ERR_OR_ZERO(sched_scan_req);
9873         if (err)
9874                 goto out_err;
9875
9876         /* leave request id zero for legacy request
9877          * or if driver does not support multi-scheduled scan
9878          */
9879         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9880                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9881
9882         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9883         if (err)
9884                 goto out_free;
9885
9886         sched_scan_req->dev = dev;
9887         sched_scan_req->wiphy = &rdev->wiphy;
9888
9889         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9890                 sched_scan_req->owner_nlportid = info->snd_portid;
9891
9892         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9893
9894         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9895         return 0;
9896
9897 out_free:
9898         kfree(sched_scan_req);
9899 out_err:
9900         return err;
9901 }
9902
9903 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9904                                    struct genl_info *info)
9905 {
9906         struct cfg80211_sched_scan_request *req;
9907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9908         u64 cookie;
9909
9910         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9911                 return -EOPNOTSUPP;
9912
9913         if (info->attrs[NL80211_ATTR_COOKIE]) {
9914                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9915                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9916         }
9917
9918         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9919                                      struct cfg80211_sched_scan_request,
9920                                      list);
9921         if (!req || req->reqid ||
9922             (req->owner_nlportid &&
9923              req->owner_nlportid != info->snd_portid))
9924                 return -ENOENT;
9925
9926         return cfg80211_stop_sched_scan_req(rdev, req, false);
9927 }
9928
9929 static int nl80211_start_radar_detection(struct sk_buff *skb,
9930                                          struct genl_info *info)
9931 {
9932         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9933         struct net_device *dev = info->user_ptr[1];
9934         struct wireless_dev *wdev = dev->ieee80211_ptr;
9935         struct wiphy *wiphy = wdev->wiphy;
9936         struct cfg80211_chan_def chandef;
9937         enum nl80211_dfs_regions dfs_region;
9938         unsigned int cac_time_ms;
9939         int err = -EINVAL;
9940
9941         flush_delayed_work(&rdev->dfs_update_channels_wk);
9942
9943         wiphy_lock(wiphy);
9944
9945         dfs_region = reg_get_dfs_region(wiphy);
9946         if (dfs_region == NL80211_DFS_UNSET)
9947                 goto unlock;
9948
9949         err = nl80211_parse_chandef(rdev, info, &chandef);
9950         if (err)
9951                 goto unlock;
9952
9953         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9954         if (err < 0)
9955                 goto unlock;
9956
9957         if (err == 0) {
9958                 err = -EINVAL;
9959                 goto unlock;
9960         }
9961
9962         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9963                 err = -EINVAL;
9964                 goto unlock;
9965         }
9966
9967         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9968                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9969                                                                 &chandef);
9970                 goto unlock;
9971         }
9972
9973         if (netif_carrier_ok(dev)) {
9974                 err = -EBUSY;
9975                 goto unlock;
9976         }
9977
9978         if (wdev->cac_started) {
9979                 err = -EBUSY;
9980                 goto unlock;
9981         }
9982
9983         /* CAC start is offloaded to HW and can't be started manually */
9984         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9985                 err = -EOPNOTSUPP;
9986                 goto unlock;
9987         }
9988
9989         if (!rdev->ops->start_radar_detection) {
9990                 err = -EOPNOTSUPP;
9991                 goto unlock;
9992         }
9993
9994         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9995         if (WARN_ON(!cac_time_ms))
9996                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9997
9998         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9999         if (!err) {
10000                 wdev->links[0].ap.chandef = chandef;
10001                 wdev->cac_started = true;
10002                 wdev->cac_start_time = jiffies;
10003                 wdev->cac_time_ms = cac_time_ms;
10004         }
10005 unlock:
10006         wiphy_unlock(wiphy);
10007
10008         return err;
10009 }
10010
10011 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10012                                           struct genl_info *info)
10013 {
10014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10015         struct net_device *dev = info->user_ptr[1];
10016         struct wireless_dev *wdev = dev->ieee80211_ptr;
10017         struct wiphy *wiphy = wdev->wiphy;
10018         struct cfg80211_chan_def chandef;
10019         enum nl80211_dfs_regions dfs_region;
10020         int err;
10021
10022         dfs_region = reg_get_dfs_region(wiphy);
10023         if (dfs_region == NL80211_DFS_UNSET) {
10024                 GENL_SET_ERR_MSG(info,
10025                                  "DFS Region is not set. Unexpected Radar indication");
10026                 return -EINVAL;
10027         }
10028
10029         err = nl80211_parse_chandef(rdev, info, &chandef);
10030         if (err) {
10031                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10032                 return err;
10033         }
10034
10035         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10036         if (err < 0) {
10037                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10038                 return err;
10039         }
10040
10041         if (err == 0) {
10042                 GENL_SET_ERR_MSG(info,
10043                                  "Unexpected Radar indication for chandef/iftype");
10044                 return -EINVAL;
10045         }
10046
10047         /* Do not process this notification if radar is already detected
10048          * by kernel on this channel, and return success.
10049          */
10050         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10051                 return 0;
10052
10053         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10054
10055         cfg80211_sched_dfs_chan_update(rdev);
10056
10057         rdev->radar_chandef = chandef;
10058
10059         /* Propagate this notification to other radios as well */
10060         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10061
10062         return 0;
10063 }
10064
10065 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10066 {
10067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10068         unsigned int link_id = nl80211_link_id(info->attrs);
10069         struct net_device *dev = info->user_ptr[1];
10070         struct wireless_dev *wdev = dev->ieee80211_ptr;
10071         struct cfg80211_csa_settings params;
10072         struct nlattr **csa_attrs = NULL;
10073         int err;
10074         bool need_new_beacon = false;
10075         bool need_handle_dfs_flag = true;
10076         int len, i;
10077         u32 cs_count;
10078
10079         if (!rdev->ops->channel_switch ||
10080             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10081                 return -EOPNOTSUPP;
10082
10083         switch (dev->ieee80211_ptr->iftype) {
10084         case NL80211_IFTYPE_AP:
10085         case NL80211_IFTYPE_P2P_GO:
10086                 need_new_beacon = true;
10087                 /* For all modes except AP the handle_dfs flag needs to be
10088                  * supplied to tell the kernel that userspace will handle radar
10089                  * events when they happen. Otherwise a switch to a channel
10090                  * requiring DFS will be rejected.
10091                  */
10092                 need_handle_dfs_flag = false;
10093
10094                 /* useless if AP is not running */
10095                 if (!wdev->links[link_id].ap.beacon_interval)
10096                         return -ENOTCONN;
10097                 break;
10098         case NL80211_IFTYPE_ADHOC:
10099                 if (!wdev->u.ibss.ssid_len)
10100                         return -ENOTCONN;
10101                 break;
10102         case NL80211_IFTYPE_MESH_POINT:
10103                 if (!wdev->u.mesh.id_len)
10104                         return -ENOTCONN;
10105                 break;
10106         default:
10107                 return -EOPNOTSUPP;
10108         }
10109
10110         memset(&params, 0, sizeof(params));
10111         params.beacon_csa.ftm_responder = -1;
10112
10113         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10114             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10115                 return -EINVAL;
10116
10117         /* only important for AP, IBSS and mesh create IEs internally */
10118         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10119                 return -EINVAL;
10120
10121         /* Even though the attribute is u32, the specification says
10122          * u8, so let's make sure we don't overflow.
10123          */
10124         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10125         if (cs_count > 255)
10126                 return -EINVAL;
10127
10128         params.count = cs_count;
10129
10130         if (!need_new_beacon)
10131                 goto skip_beacons;
10132
10133         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10134                                    info->extack);
10135         if (err)
10136                 goto free;
10137
10138         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10139                             GFP_KERNEL);
10140         if (!csa_attrs) {
10141                 err = -ENOMEM;
10142                 goto free;
10143         }
10144
10145         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10146                                           info->attrs[NL80211_ATTR_CSA_IES],
10147                                           nl80211_policy, info->extack);
10148         if (err)
10149                 goto free;
10150
10151         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10152                                    info->extack);
10153         if (err)
10154                 goto free;
10155
10156         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10157                 err = -EINVAL;
10158                 goto free;
10159         }
10160
10161         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10162         if (!len || (len % sizeof(u16))) {
10163                 err = -EINVAL;
10164                 goto free;
10165         }
10166
10167         params.n_counter_offsets_beacon = len / sizeof(u16);
10168         if (rdev->wiphy.max_num_csa_counters &&
10169             (params.n_counter_offsets_beacon >
10170              rdev->wiphy.max_num_csa_counters)) {
10171                 err = -EINVAL;
10172                 goto free;
10173         }
10174
10175         params.counter_offsets_beacon =
10176                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10177
10178         /* sanity checks - counters should fit and be the same */
10179         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10180                 u16 offset = params.counter_offsets_beacon[i];
10181
10182                 if (offset >= params.beacon_csa.tail_len) {
10183                         err = -EINVAL;
10184                         goto free;
10185                 }
10186
10187                 if (params.beacon_csa.tail[offset] != params.count) {
10188                         err = -EINVAL;
10189                         goto free;
10190                 }
10191         }
10192
10193         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10194                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10195                 if (!len || (len % sizeof(u16))) {
10196                         err = -EINVAL;
10197                         goto free;
10198                 }
10199
10200                 params.n_counter_offsets_presp = len / sizeof(u16);
10201                 if (rdev->wiphy.max_num_csa_counters &&
10202                     (params.n_counter_offsets_presp >
10203                      rdev->wiphy.max_num_csa_counters)) {
10204                         err = -EINVAL;
10205                         goto free;
10206                 }
10207
10208                 params.counter_offsets_presp =
10209                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10210
10211                 /* sanity checks - counters should fit and be the same */
10212                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10213                         u16 offset = params.counter_offsets_presp[i];
10214
10215                         if (offset >= params.beacon_csa.probe_resp_len) {
10216                                 err = -EINVAL;
10217                                 goto free;
10218                         }
10219
10220                         if (params.beacon_csa.probe_resp[offset] !=
10221                             params.count) {
10222                                 err = -EINVAL;
10223                                 goto free;
10224                         }
10225                 }
10226         }
10227
10228 skip_beacons:
10229         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10230         if (err)
10231                 goto free;
10232
10233         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10234                                            wdev->iftype)) {
10235                 err = -EINVAL;
10236                 goto free;
10237         }
10238
10239         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10240                                             &params.chandef,
10241                                             wdev->iftype);
10242         if (err < 0)
10243                 goto free;
10244
10245         if (err > 0) {
10246                 params.radar_required = true;
10247                 if (need_handle_dfs_flag &&
10248                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10249                         err = -EINVAL;
10250                         goto free;
10251                 }
10252         }
10253
10254         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10255                 params.block_tx = true;
10256
10257         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10258                 err = nl80211_parse_punct_bitmap(rdev, info,
10259                                                  &params.chandef,
10260                                                  &params.punct_bitmap);
10261                 if (err)
10262                         goto free;
10263         }
10264
10265         wdev_lock(wdev);
10266         err = rdev_channel_switch(rdev, dev, &params);
10267         wdev_unlock(wdev);
10268
10269 free:
10270         kfree(params.beacon_after.mbssid_ies);
10271         kfree(params.beacon_csa.mbssid_ies);
10272         kfree(params.beacon_after.rnr_ies);
10273         kfree(params.beacon_csa.rnr_ies);
10274         kfree(csa_attrs);
10275         return err;
10276 }
10277
10278 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10279                             u32 seq, int flags,
10280                             struct cfg80211_registered_device *rdev,
10281                             struct wireless_dev *wdev,
10282                             struct cfg80211_internal_bss *intbss)
10283 {
10284         struct cfg80211_bss *res = &intbss->pub;
10285         const struct cfg80211_bss_ies *ies;
10286         unsigned int link_id;
10287         void *hdr;
10288         struct nlattr *bss;
10289
10290         ASSERT_WDEV_LOCK(wdev);
10291
10292         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10293                              NL80211_CMD_NEW_SCAN_RESULTS);
10294         if (!hdr)
10295                 return -1;
10296
10297         genl_dump_check_consistent(cb, hdr);
10298
10299         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10300                 goto nla_put_failure;
10301         if (wdev->netdev &&
10302             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10303                 goto nla_put_failure;
10304         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10305                               NL80211_ATTR_PAD))
10306                 goto nla_put_failure;
10307
10308         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10309         if (!bss)
10310                 goto nla_put_failure;
10311         if ((!is_zero_ether_addr(res->bssid) &&
10312              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10313                 goto nla_put_failure;
10314
10315         rcu_read_lock();
10316         /* indicate whether we have probe response data or not */
10317         if (rcu_access_pointer(res->proberesp_ies) &&
10318             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10319                 goto fail_unlock_rcu;
10320
10321         /* this pointer prefers to be pointed to probe response data
10322          * but is always valid
10323          */
10324         ies = rcu_dereference(res->ies);
10325         if (ies) {
10326                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10327                                       NL80211_BSS_PAD))
10328                         goto fail_unlock_rcu;
10329                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10330                                         ies->len, ies->data))
10331                         goto fail_unlock_rcu;
10332         }
10333
10334         /* and this pointer is always (unless driver didn't know) beacon data */
10335         ies = rcu_dereference(res->beacon_ies);
10336         if (ies && ies->from_beacon) {
10337                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10338                                       NL80211_BSS_PAD))
10339                         goto fail_unlock_rcu;
10340                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10341                                         ies->len, ies->data))
10342                         goto fail_unlock_rcu;
10343         }
10344         rcu_read_unlock();
10345
10346         if (res->beacon_interval &&
10347             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10348                 goto nla_put_failure;
10349         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10350             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10351             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10352                         res->channel->freq_offset) ||
10353             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10354             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10355                         jiffies_to_msecs(jiffies - intbss->ts)))
10356                 goto nla_put_failure;
10357
10358         if (intbss->parent_tsf &&
10359             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10360                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10361              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10362                      intbss->parent_bssid)))
10363                 goto nla_put_failure;
10364
10365         if (intbss->ts_boottime &&
10366             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10367                               intbss->ts_boottime, NL80211_BSS_PAD))
10368                 goto nla_put_failure;
10369
10370         if (!nl80211_put_signal(msg, intbss->pub.chains,
10371                                 intbss->pub.chain_signal,
10372                                 NL80211_BSS_CHAIN_SIGNAL))
10373                 goto nla_put_failure;
10374
10375         switch (rdev->wiphy.signal_type) {
10376         case CFG80211_SIGNAL_TYPE_MBM:
10377                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10378                         goto nla_put_failure;
10379                 break;
10380         case CFG80211_SIGNAL_TYPE_UNSPEC:
10381                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10382                         goto nla_put_failure;
10383                 break;
10384         default:
10385                 break;
10386         }
10387
10388         switch (wdev->iftype) {
10389         case NL80211_IFTYPE_P2P_CLIENT:
10390         case NL80211_IFTYPE_STATION:
10391                 for_each_valid_link(wdev, link_id) {
10392                         if (intbss == wdev->links[link_id].client.current_bss &&
10393                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10394                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10395                              (wdev->valid_links &&
10396                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10397                                           link_id) ||
10398                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10399                                        wdev->u.client.connected_addr)))))
10400                                 goto nla_put_failure;
10401                 }
10402                 break;
10403         case NL80211_IFTYPE_ADHOC:
10404                 if (intbss == wdev->u.ibss.current_bss &&
10405                     nla_put_u32(msg, NL80211_BSS_STATUS,
10406                                 NL80211_BSS_STATUS_IBSS_JOINED))
10407                         goto nla_put_failure;
10408                 break;
10409         default:
10410                 break;
10411         }
10412
10413         nla_nest_end(msg, bss);
10414
10415         genlmsg_end(msg, hdr);
10416         return 0;
10417
10418  fail_unlock_rcu:
10419         rcu_read_unlock();
10420  nla_put_failure:
10421         genlmsg_cancel(msg, hdr);
10422         return -EMSGSIZE;
10423 }
10424
10425 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10426 {
10427         struct cfg80211_registered_device *rdev;
10428         struct cfg80211_internal_bss *scan;
10429         struct wireless_dev *wdev;
10430         int start = cb->args[2], idx = 0;
10431         int err;
10432
10433         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10434         if (err)
10435                 return err;
10436         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10437         __acquire(&rdev->wiphy.mtx);
10438
10439         wdev_lock(wdev);
10440         spin_lock_bh(&rdev->bss_lock);
10441
10442         /*
10443          * dump_scan will be called multiple times to break up the scan results
10444          * into multiple messages.  It is unlikely that any more bss-es will be
10445          * expired after the first call, so only call only call this on the
10446          * first dump_scan invocation.
10447          */
10448         if (start == 0)
10449                 cfg80211_bss_expire(rdev);
10450
10451         cb->seq = rdev->bss_generation;
10452
10453         list_for_each_entry(scan, &rdev->bss_list, list) {
10454                 if (++idx <= start)
10455                         continue;
10456                 if (nl80211_send_bss(skb, cb,
10457                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10458                                 rdev, wdev, scan) < 0) {
10459                         idx--;
10460                         break;
10461                 }
10462         }
10463
10464         spin_unlock_bh(&rdev->bss_lock);
10465         wdev_unlock(wdev);
10466
10467         cb->args[2] = idx;
10468         wiphy_unlock(&rdev->wiphy);
10469
10470         return skb->len;
10471 }
10472
10473 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10474                                int flags, struct net_device *dev,
10475                                bool allow_radio_stats,
10476                                struct survey_info *survey)
10477 {
10478         void *hdr;
10479         struct nlattr *infoattr;
10480
10481         /* skip radio stats if userspace didn't request them */
10482         if (!survey->channel && !allow_radio_stats)
10483                 return 0;
10484
10485         hdr = nl80211hdr_put(msg, portid, seq, flags,
10486                              NL80211_CMD_NEW_SURVEY_RESULTS);
10487         if (!hdr)
10488                 return -ENOMEM;
10489
10490         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10491                 goto nla_put_failure;
10492
10493         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10494         if (!infoattr)
10495                 goto nla_put_failure;
10496
10497         if (survey->channel &&
10498             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10499                         survey->channel->center_freq))
10500                 goto nla_put_failure;
10501
10502         if (survey->channel && survey->channel->freq_offset &&
10503             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10504                         survey->channel->freq_offset))
10505                 goto nla_put_failure;
10506
10507         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10508             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10509                 goto nla_put_failure;
10510         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10511             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10512                 goto nla_put_failure;
10513         if ((survey->filled & SURVEY_INFO_TIME) &&
10514             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10515                         survey->time, NL80211_SURVEY_INFO_PAD))
10516                 goto nla_put_failure;
10517         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10518             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10519                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10520                 goto nla_put_failure;
10521         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10522             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10523                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10524                 goto nla_put_failure;
10525         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10526             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10527                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10528                 goto nla_put_failure;
10529         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10530             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10531                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10532                 goto nla_put_failure;
10533         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10534             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10535                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10536                 goto nla_put_failure;
10537         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10538             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10539                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10540                 goto nla_put_failure;
10541
10542         nla_nest_end(msg, infoattr);
10543
10544         genlmsg_end(msg, hdr);
10545         return 0;
10546
10547  nla_put_failure:
10548         genlmsg_cancel(msg, hdr);
10549         return -EMSGSIZE;
10550 }
10551
10552 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10553 {
10554         struct nlattr **attrbuf;
10555         struct survey_info survey;
10556         struct cfg80211_registered_device *rdev;
10557         struct wireless_dev *wdev;
10558         int survey_idx = cb->args[2];
10559         int res;
10560         bool radio_stats;
10561
10562         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10563         if (!attrbuf)
10564                 return -ENOMEM;
10565
10566         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10567         if (res) {
10568                 kfree(attrbuf);
10569                 return res;
10570         }
10571         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10572         __acquire(&rdev->wiphy.mtx);
10573
10574         /* prepare_wdev_dump parsed the attributes */
10575         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10576
10577         if (!wdev->netdev) {
10578                 res = -EINVAL;
10579                 goto out_err;
10580         }
10581
10582         if (!rdev->ops->dump_survey) {
10583                 res = -EOPNOTSUPP;
10584                 goto out_err;
10585         }
10586
10587         while (1) {
10588                 wdev_lock(wdev);
10589                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10590                 wdev_unlock(wdev);
10591                 if (res == -ENOENT)
10592                         break;
10593                 if (res)
10594                         goto out_err;
10595
10596                 /* don't send disabled channels, but do send non-channel data */
10597                 if (survey.channel &&
10598                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10599                         survey_idx++;
10600                         continue;
10601                 }
10602
10603                 if (nl80211_send_survey(skb,
10604                                 NETLINK_CB(cb->skb).portid,
10605                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10606                                 wdev->netdev, radio_stats, &survey) < 0)
10607                         goto out;
10608                 survey_idx++;
10609         }
10610
10611  out:
10612         cb->args[2] = survey_idx;
10613         res = skb->len;
10614  out_err:
10615         kfree(attrbuf);
10616         wiphy_unlock(&rdev->wiphy);
10617         return res;
10618 }
10619
10620 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10621 {
10622         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10623                                   NL80211_WPA_VERSION_2 |
10624                                   NL80211_WPA_VERSION_3));
10625 }
10626
10627 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10628 {
10629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10630         struct net_device *dev = info->user_ptr[1];
10631         struct ieee80211_channel *chan;
10632         const u8 *bssid, *ssid;
10633         int err, ssid_len;
10634         enum nl80211_auth_type auth_type;
10635         struct key_parse key;
10636         bool local_state_change;
10637         struct cfg80211_auth_request req = {};
10638         u32 freq;
10639
10640         if (!info->attrs[NL80211_ATTR_MAC])
10641                 return -EINVAL;
10642
10643         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10644                 return -EINVAL;
10645
10646         if (!info->attrs[NL80211_ATTR_SSID])
10647                 return -EINVAL;
10648
10649         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10650                 return -EINVAL;
10651
10652         err = nl80211_parse_key(info, &key);
10653         if (err)
10654                 return err;
10655
10656         if (key.idx >= 0) {
10657                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10658                         return -EINVAL;
10659                 if (!key.p.key || !key.p.key_len)
10660                         return -EINVAL;
10661                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10662                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10663                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10664                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10665                         return -EINVAL;
10666                 if (key.idx > 3)
10667                         return -EINVAL;
10668         } else {
10669                 key.p.key_len = 0;
10670                 key.p.key = NULL;
10671         }
10672
10673         if (key.idx >= 0) {
10674                 int i;
10675                 bool ok = false;
10676
10677                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10678                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10679                                 ok = true;
10680                                 break;
10681                         }
10682                 }
10683                 if (!ok)
10684                         return -EINVAL;
10685         }
10686
10687         if (!rdev->ops->auth)
10688                 return -EOPNOTSUPP;
10689
10690         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10691             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10692                 return -EOPNOTSUPP;
10693
10694         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10695         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10696         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10697                 freq +=
10698                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10699
10700         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10701         if (!chan)
10702                 return -EINVAL;
10703
10704         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10705         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10706
10707         if (info->attrs[NL80211_ATTR_IE]) {
10708                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10709                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10710         }
10711
10712         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10713         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10714                 return -EINVAL;
10715
10716         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10717              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10718              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10719              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10720             !info->attrs[NL80211_ATTR_AUTH_DATA])
10721                 return -EINVAL;
10722
10723         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10724                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10725                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10726                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10727                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10728                         return -EINVAL;
10729                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10730                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10731         }
10732
10733         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10734
10735         /*
10736          * Since we no longer track auth state, ignore
10737          * requests to only change local state.
10738          */
10739         if (local_state_change)
10740                 return 0;
10741
10742         req.auth_type = auth_type;
10743         req.key = key.p.key;
10744         req.key_len = key.p.key_len;
10745         req.key_idx = key.idx;
10746         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10747         if (req.link_id >= 0) {
10748                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10749                         return -EINVAL;
10750                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10751                         return -EINVAL;
10752                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10753                 if (!is_valid_ether_addr(req.ap_mld_addr))
10754                         return -EINVAL;
10755         }
10756
10757         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10758                                    IEEE80211_BSS_TYPE_ESS,
10759                                    IEEE80211_PRIVACY_ANY);
10760         if (!req.bss)
10761                 return -ENOENT;
10762
10763         wdev_lock(dev->ieee80211_ptr);
10764         err = cfg80211_mlme_auth(rdev, dev, &req);
10765         wdev_unlock(dev->ieee80211_ptr);
10766
10767         cfg80211_put_bss(&rdev->wiphy, req.bss);
10768
10769         return err;
10770 }
10771
10772 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10773                                      struct genl_info *info)
10774 {
10775         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10776                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10777                 return -EINVAL;
10778         }
10779
10780         if (!rdev->ops->tx_control_port ||
10781             !wiphy_ext_feature_isset(&rdev->wiphy,
10782                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10783                 return -EOPNOTSUPP;
10784
10785         return 0;
10786 }
10787
10788 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10789                                    struct genl_info *info,
10790                                    struct cfg80211_crypto_settings *settings,
10791                                    int cipher_limit)
10792 {
10793         memset(settings, 0, sizeof(*settings));
10794
10795         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10796
10797         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10798                 u16 proto;
10799
10800                 proto = nla_get_u16(
10801                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10802                 settings->control_port_ethertype = cpu_to_be16(proto);
10803                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10804                     proto != ETH_P_PAE)
10805                         return -EINVAL;
10806                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10807                         settings->control_port_no_encrypt = true;
10808         } else
10809                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10810
10811         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10812                 int r = validate_pae_over_nl80211(rdev, info);
10813
10814                 if (r < 0)
10815                         return r;
10816
10817                 settings->control_port_over_nl80211 = true;
10818
10819                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10820                         settings->control_port_no_preauth = true;
10821         }
10822
10823         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10824                 void *data;
10825                 int len, i;
10826
10827                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10828                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10829                 settings->n_ciphers_pairwise = len / sizeof(u32);
10830
10831                 if (len % sizeof(u32))
10832                         return -EINVAL;
10833
10834                 if (settings->n_ciphers_pairwise > cipher_limit)
10835                         return -EINVAL;
10836
10837                 memcpy(settings->ciphers_pairwise, data, len);
10838
10839                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10840                         if (!cfg80211_supported_cipher_suite(
10841                                         &rdev->wiphy,
10842                                         settings->ciphers_pairwise[i]))
10843                                 return -EINVAL;
10844         }
10845
10846         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10847                 settings->cipher_group =
10848                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10849                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10850                                                      settings->cipher_group))
10851                         return -EINVAL;
10852         }
10853
10854         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10855                 settings->wpa_versions =
10856                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10857                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10858                         return -EINVAL;
10859         }
10860
10861         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10862                 void *data;
10863                 int len;
10864
10865                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10866                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10867                 settings->n_akm_suites = len / sizeof(u32);
10868
10869                 if (len % sizeof(u32))
10870                         return -EINVAL;
10871
10872                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10873                         return -EINVAL;
10874
10875                 memcpy(settings->akm_suites, data, len);
10876         }
10877
10878         if (info->attrs[NL80211_ATTR_PMK]) {
10879                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10880                         return -EINVAL;
10881                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10882                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10883                     !wiphy_ext_feature_isset(&rdev->wiphy,
10884                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10885                         return -EINVAL;
10886                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10887         }
10888
10889         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10890                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10891                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10892                     !wiphy_ext_feature_isset(&rdev->wiphy,
10893                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10894                         return -EINVAL;
10895                 settings->sae_pwd =
10896                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10897                 settings->sae_pwd_len =
10898                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10899         }
10900
10901         if (info->attrs[NL80211_ATTR_SAE_PWE])
10902                 settings->sae_pwe =
10903                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10904         else
10905                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10906
10907         return 0;
10908 }
10909
10910 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10911                                               const u8 *ssid, int ssid_len,
10912                                               struct nlattr **attrs)
10913 {
10914         struct ieee80211_channel *chan;
10915         struct cfg80211_bss *bss;
10916         const u8 *bssid;
10917         u32 freq;
10918
10919         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10920                 return ERR_PTR(-EINVAL);
10921
10922         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10923
10924         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10925         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10926                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10927
10928         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10929         if (!chan)
10930                 return ERR_PTR(-EINVAL);
10931
10932         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10933                                ssid, ssid_len,
10934                                IEEE80211_BSS_TYPE_ESS,
10935                                IEEE80211_PRIVACY_ANY);
10936         if (!bss)
10937                 return ERR_PTR(-ENOENT);
10938
10939         return bss;
10940 }
10941
10942 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10943 {
10944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10945         struct net_device *dev = info->user_ptr[1];
10946         struct cfg80211_assoc_request req = {};
10947         struct nlattr **attrs = NULL;
10948         const u8 *ap_addr, *ssid;
10949         unsigned int link_id;
10950         int err, ssid_len;
10951
10952         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10953             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10954                 return -EPERM;
10955
10956         if (!info->attrs[NL80211_ATTR_SSID])
10957                 return -EINVAL;
10958
10959         if (!rdev->ops->assoc)
10960                 return -EOPNOTSUPP;
10961
10962         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10963             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10964                 return -EOPNOTSUPP;
10965
10966         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10967         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10968
10969         if (info->attrs[NL80211_ATTR_IE]) {
10970                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10971                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10972
10973                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10974                                            req.ie, req.ie_len)) {
10975                         GENL_SET_ERR_MSG(info,
10976                                          "non-inheritance makes no sense");
10977                         return -EINVAL;
10978                 }
10979         }
10980
10981         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10982                 enum nl80211_mfp mfp =
10983                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10984                 if (mfp == NL80211_MFP_REQUIRED)
10985                         req.use_mfp = true;
10986                 else if (mfp != NL80211_MFP_NO)
10987                         return -EINVAL;
10988         }
10989
10990         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10991                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10992
10993         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10994                 req.flags |= ASSOC_REQ_DISABLE_HT;
10995
10996         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10997                 memcpy(&req.ht_capa_mask,
10998                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10999                        sizeof(req.ht_capa_mask));
11000
11001         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11002                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11003                         return -EINVAL;
11004                 memcpy(&req.ht_capa,
11005                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11006                        sizeof(req.ht_capa));
11007         }
11008
11009         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11010                 req.flags |= ASSOC_REQ_DISABLE_VHT;
11011
11012         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11013                 req.flags |= ASSOC_REQ_DISABLE_HE;
11014
11015         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11016                 req.flags |= ASSOC_REQ_DISABLE_EHT;
11017
11018         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11019                 memcpy(&req.vht_capa_mask,
11020                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11021                        sizeof(req.vht_capa_mask));
11022
11023         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11024                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11025                         return -EINVAL;
11026                 memcpy(&req.vht_capa,
11027                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11028                        sizeof(req.vht_capa));
11029         }
11030
11031         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11032                 if (!((rdev->wiphy.features &
11033                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11034                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11035                     !wiphy_ext_feature_isset(&rdev->wiphy,
11036                                              NL80211_EXT_FEATURE_RRM))
11037                         return -EINVAL;
11038                 req.flags |= ASSOC_REQ_USE_RRM;
11039         }
11040
11041         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11042                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11043                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11044                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11045                         return -EINVAL;
11046                 req.fils_nonces =
11047                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11048         }
11049
11050         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11051                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11052                         return -EINVAL;
11053                 memcpy(&req.s1g_capa_mask,
11054                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11055                        sizeof(req.s1g_capa_mask));
11056         }
11057
11058         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11059                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11060                         return -EINVAL;
11061                 memcpy(&req.s1g_capa,
11062                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11063                        sizeof(req.s1g_capa));
11064         }
11065
11066         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11067
11068         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11069                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11070                 struct nlattr *link;
11071                 int rem = 0;
11072
11073                 if (req.link_id < 0)
11074                         return -EINVAL;
11075
11076                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11077                         return -EINVAL;
11078
11079                 if (info->attrs[NL80211_ATTR_MAC] ||
11080                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11081                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11082                         return -EINVAL;
11083
11084                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11085                 ap_addr = req.ap_mld_addr;
11086
11087                 attrs = kzalloc(attrsize, GFP_KERNEL);
11088                 if (!attrs)
11089                         return -ENOMEM;
11090
11091                 nla_for_each_nested(link,
11092                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11093                                     rem) {
11094                         memset(attrs, 0, attrsize);
11095
11096                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11097                                          link, NULL, NULL);
11098
11099                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11100                                 err = -EINVAL;
11101                                 goto free;
11102                         }
11103
11104                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11105                         /* cannot use the same link ID again */
11106                         if (req.links[link_id].bss) {
11107                                 err = -EINVAL;
11108                                 goto free;
11109                         }
11110                         req.links[link_id].bss =
11111                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
11112                         if (IS_ERR(req.links[link_id].bss)) {
11113                                 err = PTR_ERR(req.links[link_id].bss);
11114                                 req.links[link_id].bss = NULL;
11115                                 goto free;
11116                         }
11117
11118                         if (attrs[NL80211_ATTR_IE]) {
11119                                 req.links[link_id].elems =
11120                                         nla_data(attrs[NL80211_ATTR_IE]);
11121                                 req.links[link_id].elems_len =
11122                                         nla_len(attrs[NL80211_ATTR_IE]);
11123
11124                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11125                                                        req.links[link_id].elems,
11126                                                        req.links[link_id].elems_len)) {
11127                                         GENL_SET_ERR_MSG(info,
11128                                                          "cannot deal with fragmentation");
11129                                         err = -EINVAL;
11130                                         goto free;
11131                                 }
11132
11133                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11134                                                            req.links[link_id].elems,
11135                                                            req.links[link_id].elems_len)) {
11136                                         GENL_SET_ERR_MSG(info,
11137                                                          "cannot deal with non-inheritance");
11138                                         err = -EINVAL;
11139                                         goto free;
11140                                 }
11141                         }
11142
11143                         req.links[link_id].disabled =
11144                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11145                 }
11146
11147                 if (!req.links[req.link_id].bss) {
11148                         err = -EINVAL;
11149                         goto free;
11150                 }
11151
11152                 if (req.links[req.link_id].elems_len) {
11153                         GENL_SET_ERR_MSG(info,
11154                                          "cannot have per-link elems on assoc link");
11155                         err = -EINVAL;
11156                         goto free;
11157                 }
11158
11159                 if (req.links[req.link_id].disabled) {
11160                         GENL_SET_ERR_MSG(info,
11161                                          "cannot have assoc link disabled");
11162                         err = -EINVAL;
11163                         goto free;
11164                 }
11165
11166                 kfree(attrs);
11167                 attrs = NULL;
11168         } else {
11169                 if (req.link_id >= 0)
11170                         return -EINVAL;
11171
11172                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
11173                 if (IS_ERR(req.bss))
11174                         return PTR_ERR(req.bss);
11175                 ap_addr = req.bss->bssid;
11176         }
11177
11178         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11179         if (!err) {
11180                 wdev_lock(dev->ieee80211_ptr);
11181
11182                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11183
11184                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11185                         dev->ieee80211_ptr->conn_owner_nlportid =
11186                                 info->snd_portid;
11187                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11188                                ap_addr, ETH_ALEN);
11189                 }
11190
11191                 wdev_unlock(dev->ieee80211_ptr);
11192         }
11193
11194 free:
11195         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11196                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11197         cfg80211_put_bss(&rdev->wiphy, req.bss);
11198         kfree(attrs);
11199
11200         return err;
11201 }
11202
11203 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11204 {
11205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11206         struct net_device *dev = info->user_ptr[1];
11207         const u8 *ie = NULL, *bssid;
11208         int ie_len = 0, err;
11209         u16 reason_code;
11210         bool local_state_change;
11211
11212         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11213             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11214                 return -EPERM;
11215
11216         if (!info->attrs[NL80211_ATTR_MAC])
11217                 return -EINVAL;
11218
11219         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11220                 return -EINVAL;
11221
11222         if (!rdev->ops->deauth)
11223                 return -EOPNOTSUPP;
11224
11225         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11226             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11227                 return -EOPNOTSUPP;
11228
11229         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11230
11231         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11232         if (reason_code == 0) {
11233                 /* Reason Code 0 is reserved */
11234                 return -EINVAL;
11235         }
11236
11237         if (info->attrs[NL80211_ATTR_IE]) {
11238                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11239                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11240         }
11241
11242         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11243
11244         wdev_lock(dev->ieee80211_ptr);
11245         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11246                                    local_state_change);
11247         wdev_unlock(dev->ieee80211_ptr);
11248         return err;
11249 }
11250
11251 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11252 {
11253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11254         struct net_device *dev = info->user_ptr[1];
11255         const u8 *ie = NULL, *bssid;
11256         int ie_len = 0, err;
11257         u16 reason_code;
11258         bool local_state_change;
11259
11260         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11261             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11262                 return -EPERM;
11263
11264         if (!info->attrs[NL80211_ATTR_MAC])
11265                 return -EINVAL;
11266
11267         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11268                 return -EINVAL;
11269
11270         if (!rdev->ops->disassoc)
11271                 return -EOPNOTSUPP;
11272
11273         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11274             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11275                 return -EOPNOTSUPP;
11276
11277         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11278
11279         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11280         if (reason_code == 0) {
11281                 /* Reason Code 0 is reserved */
11282                 return -EINVAL;
11283         }
11284
11285         if (info->attrs[NL80211_ATTR_IE]) {
11286                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11287                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11288         }
11289
11290         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11291
11292         wdev_lock(dev->ieee80211_ptr);
11293         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11294                                      local_state_change);
11295         wdev_unlock(dev->ieee80211_ptr);
11296         return err;
11297 }
11298
11299 static bool
11300 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11301                          int mcast_rate[NUM_NL80211_BANDS],
11302                          int rateval)
11303 {
11304         struct wiphy *wiphy = &rdev->wiphy;
11305         bool found = false;
11306         int band, i;
11307
11308         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11309                 struct ieee80211_supported_band *sband;
11310
11311                 sband = wiphy->bands[band];
11312                 if (!sband)
11313                         continue;
11314
11315                 for (i = 0; i < sband->n_bitrates; i++) {
11316                         if (sband->bitrates[i].bitrate == rateval) {
11317                                 mcast_rate[band] = i + 1;
11318                                 found = true;
11319                                 break;
11320                         }
11321                 }
11322         }
11323
11324         return found;
11325 }
11326
11327 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11328 {
11329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11330         struct net_device *dev = info->user_ptr[1];
11331         struct cfg80211_ibss_params ibss;
11332         struct wiphy *wiphy;
11333         struct cfg80211_cached_keys *connkeys = NULL;
11334         int err;
11335
11336         memset(&ibss, 0, sizeof(ibss));
11337
11338         if (!info->attrs[NL80211_ATTR_SSID] ||
11339             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11340                 return -EINVAL;
11341
11342         ibss.beacon_interval = 100;
11343
11344         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11345                 ibss.beacon_interval =
11346                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11347
11348         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11349                                            ibss.beacon_interval);
11350         if (err)
11351                 return err;
11352
11353         if (!rdev->ops->join_ibss)
11354                 return -EOPNOTSUPP;
11355
11356         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11357                 return -EOPNOTSUPP;
11358
11359         wiphy = &rdev->wiphy;
11360
11361         if (info->attrs[NL80211_ATTR_MAC]) {
11362                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11363
11364                 if (!is_valid_ether_addr(ibss.bssid))
11365                         return -EINVAL;
11366         }
11367         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11368         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11369
11370         if (info->attrs[NL80211_ATTR_IE]) {
11371                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11372                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11373         }
11374
11375         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11376         if (err)
11377                 return err;
11378
11379         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11380                                      NL80211_IFTYPE_ADHOC))
11381                 return -EINVAL;
11382
11383         switch (ibss.chandef.width) {
11384         case NL80211_CHAN_WIDTH_5:
11385         case NL80211_CHAN_WIDTH_10:
11386         case NL80211_CHAN_WIDTH_20_NOHT:
11387                 break;
11388         case NL80211_CHAN_WIDTH_20:
11389         case NL80211_CHAN_WIDTH_40:
11390                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11391                         return -EINVAL;
11392                 break;
11393         case NL80211_CHAN_WIDTH_80:
11394         case NL80211_CHAN_WIDTH_80P80:
11395         case NL80211_CHAN_WIDTH_160:
11396                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11397                         return -EINVAL;
11398                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11399                                              NL80211_EXT_FEATURE_VHT_IBSS))
11400                         return -EINVAL;
11401                 break;
11402         case NL80211_CHAN_WIDTH_320:
11403                 return -EINVAL;
11404         default:
11405                 return -EINVAL;
11406         }
11407
11408         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11409         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11410
11411         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11412                 u8 *rates =
11413                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11414                 int n_rates =
11415                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11416                 struct ieee80211_supported_band *sband =
11417                         wiphy->bands[ibss.chandef.chan->band];
11418
11419                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11420                                              &ibss.basic_rates);
11421                 if (err)
11422                         return err;
11423         }
11424
11425         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11426                 memcpy(&ibss.ht_capa_mask,
11427                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11428                        sizeof(ibss.ht_capa_mask));
11429
11430         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11431                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11432                         return -EINVAL;
11433                 memcpy(&ibss.ht_capa,
11434                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11435                        sizeof(ibss.ht_capa));
11436         }
11437
11438         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11439             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11440                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11441                 return -EINVAL;
11442
11443         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11444                 bool no_ht = false;
11445
11446                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11447                 if (IS_ERR(connkeys))
11448                         return PTR_ERR(connkeys);
11449
11450                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11451                     no_ht) {
11452                         kfree_sensitive(connkeys);
11453                         return -EINVAL;
11454                 }
11455         }
11456
11457         ibss.control_port =
11458                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11459
11460         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11461                 int r = validate_pae_over_nl80211(rdev, info);
11462
11463                 if (r < 0) {
11464                         kfree_sensitive(connkeys);
11465                         return r;
11466                 }
11467
11468                 ibss.control_port_over_nl80211 = true;
11469         }
11470
11471         ibss.userspace_handles_dfs =
11472                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11473
11474         wdev_lock(dev->ieee80211_ptr);
11475         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11476         if (err)
11477                 kfree_sensitive(connkeys);
11478         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11479                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11480         wdev_unlock(dev->ieee80211_ptr);
11481
11482         return err;
11483 }
11484
11485 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11486 {
11487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11488         struct net_device *dev = info->user_ptr[1];
11489
11490         if (!rdev->ops->leave_ibss)
11491                 return -EOPNOTSUPP;
11492
11493         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11494                 return -EOPNOTSUPP;
11495
11496         return cfg80211_leave_ibss(rdev, dev, false);
11497 }
11498
11499 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11500 {
11501         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11502         struct net_device *dev = info->user_ptr[1];
11503         int mcast_rate[NUM_NL80211_BANDS];
11504         u32 nla_rate;
11505
11506         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11507             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11508             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11509                 return -EOPNOTSUPP;
11510
11511         if (!rdev->ops->set_mcast_rate)
11512                 return -EOPNOTSUPP;
11513
11514         memset(mcast_rate, 0, sizeof(mcast_rate));
11515
11516         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11517                 return -EINVAL;
11518
11519         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11520         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11521                 return -EINVAL;
11522
11523         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11524 }
11525
11526 static struct sk_buff *
11527 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11528                             struct wireless_dev *wdev, int approxlen,
11529                             u32 portid, u32 seq, enum nl80211_commands cmd,
11530                             enum nl80211_attrs attr,
11531                             const struct nl80211_vendor_cmd_info *info,
11532                             gfp_t gfp)
11533 {
11534         struct sk_buff *skb;
11535         void *hdr;
11536         struct nlattr *data;
11537
11538         skb = nlmsg_new(approxlen + 100, gfp);
11539         if (!skb)
11540                 return NULL;
11541
11542         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11543         if (!hdr) {
11544                 kfree_skb(skb);
11545                 return NULL;
11546         }
11547
11548         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11549                 goto nla_put_failure;
11550
11551         if (info) {
11552                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11553                                 info->vendor_id))
11554                         goto nla_put_failure;
11555                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11556                                 info->subcmd))
11557                         goto nla_put_failure;
11558         }
11559
11560         if (wdev) {
11561                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11562                                       wdev_id(wdev), NL80211_ATTR_PAD))
11563                         goto nla_put_failure;
11564                 if (wdev->netdev &&
11565                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11566                                 wdev->netdev->ifindex))
11567                         goto nla_put_failure;
11568         }
11569
11570         data = nla_nest_start_noflag(skb, attr);
11571         if (!data)
11572                 goto nla_put_failure;
11573
11574         ((void **)skb->cb)[0] = rdev;
11575         ((void **)skb->cb)[1] = hdr;
11576         ((void **)skb->cb)[2] = data;
11577
11578         return skb;
11579
11580  nla_put_failure:
11581         kfree_skb(skb);
11582         return NULL;
11583 }
11584
11585 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11586                                            struct wireless_dev *wdev,
11587                                            enum nl80211_commands cmd,
11588                                            enum nl80211_attrs attr,
11589                                            unsigned int portid,
11590                                            int vendor_event_idx,
11591                                            int approxlen, gfp_t gfp)
11592 {
11593         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11594         const struct nl80211_vendor_cmd_info *info;
11595
11596         switch (cmd) {
11597         case NL80211_CMD_TESTMODE:
11598                 if (WARN_ON(vendor_event_idx != -1))
11599                         return NULL;
11600                 info = NULL;
11601                 break;
11602         case NL80211_CMD_VENDOR:
11603                 if (WARN_ON(vendor_event_idx < 0 ||
11604                             vendor_event_idx >= wiphy->n_vendor_events))
11605                         return NULL;
11606                 info = &wiphy->vendor_events[vendor_event_idx];
11607                 break;
11608         default:
11609                 WARN_ON(1);
11610                 return NULL;
11611         }
11612
11613         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11614                                            cmd, attr, info, gfp);
11615 }
11616 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11617
11618 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11619 {
11620         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11621         void *hdr = ((void **)skb->cb)[1];
11622         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11623         struct nlattr *data = ((void **)skb->cb)[2];
11624         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11625
11626         /* clear CB data for netlink core to own from now on */
11627         memset(skb->cb, 0, sizeof(skb->cb));
11628
11629         nla_nest_end(skb, data);
11630         genlmsg_end(skb, hdr);
11631
11632         if (nlhdr->nlmsg_pid) {
11633                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11634                                 nlhdr->nlmsg_pid);
11635         } else {
11636                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11637                         mcgrp = NL80211_MCGRP_VENDOR;
11638
11639                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11640                                         skb, 0, mcgrp, gfp);
11641         }
11642 }
11643 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11644
11645 #ifdef CONFIG_NL80211_TESTMODE
11646 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11647 {
11648         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11649         struct wireless_dev *wdev;
11650         int err;
11651
11652         lockdep_assert_held(&rdev->wiphy.mtx);
11653
11654         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11655                                           info->attrs);
11656
11657         if (!rdev->ops->testmode_cmd)
11658                 return -EOPNOTSUPP;
11659
11660         if (IS_ERR(wdev)) {
11661                 err = PTR_ERR(wdev);
11662                 if (err != -EINVAL)
11663                         return err;
11664                 wdev = NULL;
11665         } else if (wdev->wiphy != &rdev->wiphy) {
11666                 return -EINVAL;
11667         }
11668
11669         if (!info->attrs[NL80211_ATTR_TESTDATA])
11670                 return -EINVAL;
11671
11672         rdev->cur_cmd_info = info;
11673         err = rdev_testmode_cmd(rdev, wdev,
11674                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11675                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11676         rdev->cur_cmd_info = NULL;
11677
11678         return err;
11679 }
11680
11681 static int nl80211_testmode_dump(struct sk_buff *skb,
11682                                  struct netlink_callback *cb)
11683 {
11684         struct cfg80211_registered_device *rdev;
11685         struct nlattr **attrbuf = NULL;
11686         int err;
11687         long phy_idx;
11688         void *data = NULL;
11689         int data_len = 0;
11690
11691         rtnl_lock();
11692
11693         if (cb->args[0]) {
11694                 /*
11695                  * 0 is a valid index, but not valid for args[0],
11696                  * so we need to offset by 1.
11697                  */
11698                 phy_idx = cb->args[0] - 1;
11699
11700                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11701                 if (!rdev) {
11702                         err = -ENOENT;
11703                         goto out_err;
11704                 }
11705         } else {
11706                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11707                                   GFP_KERNEL);
11708                 if (!attrbuf) {
11709                         err = -ENOMEM;
11710                         goto out_err;
11711                 }
11712
11713                 err = nlmsg_parse_deprecated(cb->nlh,
11714                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11715                                              attrbuf, nl80211_fam.maxattr,
11716                                              nl80211_policy, NULL);
11717                 if (err)
11718                         goto out_err;
11719
11720                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11721                 if (IS_ERR(rdev)) {
11722                         err = PTR_ERR(rdev);
11723                         goto out_err;
11724                 }
11725                 phy_idx = rdev->wiphy_idx;
11726
11727                 if (attrbuf[NL80211_ATTR_TESTDATA])
11728                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11729         }
11730
11731         if (cb->args[1]) {
11732                 data = nla_data((void *)cb->args[1]);
11733                 data_len = nla_len((void *)cb->args[1]);
11734         }
11735
11736         if (!rdev->ops->testmode_dump) {
11737                 err = -EOPNOTSUPP;
11738                 goto out_err;
11739         }
11740
11741         while (1) {
11742                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11743                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11744                                            NL80211_CMD_TESTMODE);
11745                 struct nlattr *tmdata;
11746
11747                 if (!hdr)
11748                         break;
11749
11750                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11751                         genlmsg_cancel(skb, hdr);
11752                         break;
11753                 }
11754
11755                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11756                 if (!tmdata) {
11757                         genlmsg_cancel(skb, hdr);
11758                         break;
11759                 }
11760                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11761                 nla_nest_end(skb, tmdata);
11762
11763                 if (err == -ENOBUFS || err == -ENOENT) {
11764                         genlmsg_cancel(skb, hdr);
11765                         break;
11766                 } else if (err) {
11767                         genlmsg_cancel(skb, hdr);
11768                         goto out_err;
11769                 }
11770
11771                 genlmsg_end(skb, hdr);
11772         }
11773
11774         err = skb->len;
11775         /* see above */
11776         cb->args[0] = phy_idx + 1;
11777  out_err:
11778         kfree(attrbuf);
11779         rtnl_unlock();
11780         return err;
11781 }
11782 #endif
11783
11784 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11785 {
11786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11787         struct net_device *dev = info->user_ptr[1];
11788         struct cfg80211_connect_params connect;
11789         struct wiphy *wiphy;
11790         struct cfg80211_cached_keys *connkeys = NULL;
11791         u32 freq = 0;
11792         int err;
11793
11794         memset(&connect, 0, sizeof(connect));
11795
11796         if (!info->attrs[NL80211_ATTR_SSID] ||
11797             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11798                 return -EINVAL;
11799
11800         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11801                 connect.auth_type =
11802                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11803                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11804                                              NL80211_CMD_CONNECT))
11805                         return -EINVAL;
11806         } else
11807                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11808
11809         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11810
11811         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11812             !wiphy_ext_feature_isset(&rdev->wiphy,
11813                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11814                 return -EINVAL;
11815         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11816
11817         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11818                                       NL80211_MAX_NR_CIPHER_SUITES);
11819         if (err)
11820                 return err;
11821
11822         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11823             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11824                 return -EOPNOTSUPP;
11825
11826         wiphy = &rdev->wiphy;
11827
11828         connect.bg_scan_period = -1;
11829         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11830                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11831                 connect.bg_scan_period =
11832                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11833         }
11834
11835         if (info->attrs[NL80211_ATTR_MAC])
11836                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11837         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11838                 connect.bssid_hint =
11839                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11840         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11841         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11842
11843         if (info->attrs[NL80211_ATTR_IE]) {
11844                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11845                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11846         }
11847
11848         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11849                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11850                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11851                     !wiphy_ext_feature_isset(&rdev->wiphy,
11852                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11853                         return -EOPNOTSUPP;
11854         } else {
11855                 connect.mfp = NL80211_MFP_NO;
11856         }
11857
11858         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11859                 connect.prev_bssid =
11860                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11861
11862         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11863                 freq = MHZ_TO_KHZ(nla_get_u32(
11864                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11865         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11866                 freq +=
11867                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11868
11869         if (freq) {
11870                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11871                 if (!connect.channel)
11872                         return -EINVAL;
11873         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11874                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11875                 freq = MHZ_TO_KHZ(freq);
11876                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11877                 if (!connect.channel_hint)
11878                         return -EINVAL;
11879         }
11880
11881         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11882                 connect.edmg.channels =
11883                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11884
11885                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11886                         connect.edmg.bw_config =
11887                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11888         }
11889
11890         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11891                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11892                 if (IS_ERR(connkeys))
11893                         return PTR_ERR(connkeys);
11894         }
11895
11896         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11897                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11898
11899         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11900                 memcpy(&connect.ht_capa_mask,
11901                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11902                        sizeof(connect.ht_capa_mask));
11903
11904         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11905                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11906                         kfree_sensitive(connkeys);
11907                         return -EINVAL;
11908                 }
11909                 memcpy(&connect.ht_capa,
11910                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11911                        sizeof(connect.ht_capa));
11912         }
11913
11914         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11915                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11916
11917         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11918                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11919
11920         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11921                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11922
11923         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11924                 memcpy(&connect.vht_capa_mask,
11925                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11926                        sizeof(connect.vht_capa_mask));
11927
11928         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11929                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11930                         kfree_sensitive(connkeys);
11931                         return -EINVAL;
11932                 }
11933                 memcpy(&connect.vht_capa,
11934                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11935                        sizeof(connect.vht_capa));
11936         }
11937
11938         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11939                 if (!((rdev->wiphy.features &
11940                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11941                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11942                     !wiphy_ext_feature_isset(&rdev->wiphy,
11943                                              NL80211_EXT_FEATURE_RRM)) {
11944                         kfree_sensitive(connkeys);
11945                         return -EINVAL;
11946                 }
11947                 connect.flags |= ASSOC_REQ_USE_RRM;
11948         }
11949
11950         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11951         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11952                 kfree_sensitive(connkeys);
11953                 return -EOPNOTSUPP;
11954         }
11955
11956         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11957                 /* bss selection makes no sense if bssid is set */
11958                 if (connect.bssid) {
11959                         kfree_sensitive(connkeys);
11960                         return -EINVAL;
11961                 }
11962
11963                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11964                                        wiphy, &connect.bss_select);
11965                 if (err) {
11966                         kfree_sensitive(connkeys);
11967                         return err;
11968                 }
11969         }
11970
11971         if (wiphy_ext_feature_isset(&rdev->wiphy,
11972                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11973             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11974             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11975             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11976             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11977                 connect.fils_erp_username =
11978                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11979                 connect.fils_erp_username_len =
11980                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11981                 connect.fils_erp_realm =
11982                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11983                 connect.fils_erp_realm_len =
11984                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11985                 connect.fils_erp_next_seq_num =
11986                         nla_get_u16(
11987                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11988                 connect.fils_erp_rrk =
11989                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11990                 connect.fils_erp_rrk_len =
11991                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11992         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11993                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11994                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11995                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11996                 kfree_sensitive(connkeys);
11997                 return -EINVAL;
11998         }
11999
12000         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12001                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12002                         kfree_sensitive(connkeys);
12003                         GENL_SET_ERR_MSG(info,
12004                                          "external auth requires connection ownership");
12005                         return -EINVAL;
12006                 }
12007                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12008         }
12009
12010         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12011                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12012
12013         wdev_lock(dev->ieee80211_ptr);
12014
12015         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12016                                connect.prev_bssid);
12017         if (err)
12018                 kfree_sensitive(connkeys);
12019
12020         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12021                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12022                 if (connect.bssid)
12023                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12024                                connect.bssid, ETH_ALEN);
12025                 else
12026                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12027         }
12028
12029         wdev_unlock(dev->ieee80211_ptr);
12030
12031         return err;
12032 }
12033
12034 static int nl80211_update_connect_params(struct sk_buff *skb,
12035                                          struct genl_info *info)
12036 {
12037         struct cfg80211_connect_params connect = {};
12038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12039         struct net_device *dev = info->user_ptr[1];
12040         struct wireless_dev *wdev = dev->ieee80211_ptr;
12041         bool fils_sk_offload;
12042         u32 auth_type;
12043         u32 changed = 0;
12044         int ret;
12045
12046         if (!rdev->ops->update_connect_params)
12047                 return -EOPNOTSUPP;
12048
12049         if (info->attrs[NL80211_ATTR_IE]) {
12050                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12051                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12052                 changed |= UPDATE_ASSOC_IES;
12053         }
12054
12055         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12056                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12057
12058         /*
12059          * when driver supports fils-sk offload all attributes must be
12060          * provided. So the else covers "fils-sk-not-all" and
12061          * "no-fils-sk-any".
12062          */
12063         if (fils_sk_offload &&
12064             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12065             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12066             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12067             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12068                 connect.fils_erp_username =
12069                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12070                 connect.fils_erp_username_len =
12071                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12072                 connect.fils_erp_realm =
12073                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12074                 connect.fils_erp_realm_len =
12075                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12076                 connect.fils_erp_next_seq_num =
12077                         nla_get_u16(
12078                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12079                 connect.fils_erp_rrk =
12080                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12081                 connect.fils_erp_rrk_len =
12082                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12083                 changed |= UPDATE_FILS_ERP_INFO;
12084         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12085                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12086                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12087                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12088                 return -EINVAL;
12089         }
12090
12091         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12092                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12093                 if (!nl80211_valid_auth_type(rdev, auth_type,
12094                                              NL80211_CMD_CONNECT))
12095                         return -EINVAL;
12096
12097                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12098                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12099                         return -EINVAL;
12100
12101                 connect.auth_type = auth_type;
12102                 changed |= UPDATE_AUTH_TYPE;
12103         }
12104
12105         wdev_lock(dev->ieee80211_ptr);
12106         if (!wdev->connected)
12107                 ret = -ENOLINK;
12108         else
12109                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
12110         wdev_unlock(dev->ieee80211_ptr);
12111
12112         return ret;
12113 }
12114
12115 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12116 {
12117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12118         struct net_device *dev = info->user_ptr[1];
12119         u16 reason;
12120         int ret;
12121
12122         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12123             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12124                 return -EPERM;
12125
12126         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12127                 reason = WLAN_REASON_DEAUTH_LEAVING;
12128         else
12129                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12130
12131         if (reason == 0)
12132                 return -EINVAL;
12133
12134         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12135             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12136                 return -EOPNOTSUPP;
12137
12138         wdev_lock(dev->ieee80211_ptr);
12139         ret = cfg80211_disconnect(rdev, dev, reason, true);
12140         wdev_unlock(dev->ieee80211_ptr);
12141         return ret;
12142 }
12143
12144 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12145 {
12146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12147         struct net *net;
12148         int err;
12149
12150         if (info->attrs[NL80211_ATTR_PID]) {
12151                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12152
12153                 net = get_net_ns_by_pid(pid);
12154         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12155                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12156
12157                 net = get_net_ns_by_fd(fd);
12158         } else {
12159                 return -EINVAL;
12160         }
12161
12162         if (IS_ERR(net))
12163                 return PTR_ERR(net);
12164
12165         err = 0;
12166
12167         /* check if anything to do */
12168         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12169                 err = cfg80211_switch_netns(rdev, net);
12170
12171         put_net(net);
12172         return err;
12173 }
12174
12175 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
12176 {
12177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12178         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
12179                         struct cfg80211_pmksa *pmksa) = NULL;
12180         struct net_device *dev = info->user_ptr[1];
12181         struct cfg80211_pmksa pmksa;
12182
12183         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12184
12185         if (!info->attrs[NL80211_ATTR_PMKID])
12186                 return -EINVAL;
12187
12188         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12189
12190         if (info->attrs[NL80211_ATTR_MAC]) {
12191                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12192         } else if (info->attrs[NL80211_ATTR_SSID] &&
12193                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12194                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
12195                     info->attrs[NL80211_ATTR_PMK])) {
12196                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12197                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12198                 pmksa.cache_id =
12199                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12200         } else {
12201                 return -EINVAL;
12202         }
12203         if (info->attrs[NL80211_ATTR_PMK]) {
12204                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12205                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12206         }
12207
12208         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12209                 pmksa.pmk_lifetime =
12210                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12211
12212         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12213                 pmksa.pmk_reauth_threshold =
12214                         nla_get_u8(
12215                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12216
12217         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12218             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12219             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12220               wiphy_ext_feature_isset(&rdev->wiphy,
12221                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12222                 return -EOPNOTSUPP;
12223
12224         switch (info->genlhdr->cmd) {
12225         case NL80211_CMD_SET_PMKSA:
12226                 rdev_ops = rdev->ops->set_pmksa;
12227                 break;
12228         case NL80211_CMD_DEL_PMKSA:
12229                 rdev_ops = rdev->ops->del_pmksa;
12230                 break;
12231         default:
12232                 WARN_ON(1);
12233                 break;
12234         }
12235
12236         if (!rdev_ops)
12237                 return -EOPNOTSUPP;
12238
12239         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12240 }
12241
12242 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12243 {
12244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12245         struct net_device *dev = info->user_ptr[1];
12246
12247         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12248             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12249                 return -EOPNOTSUPP;
12250
12251         if (!rdev->ops->flush_pmksa)
12252                 return -EOPNOTSUPP;
12253
12254         return rdev_flush_pmksa(rdev, dev);
12255 }
12256
12257 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12258 {
12259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12260         struct net_device *dev = info->user_ptr[1];
12261         u8 action_code, dialog_token;
12262         u32 peer_capability = 0;
12263         u16 status_code;
12264         u8 *peer;
12265         int link_id;
12266         bool initiator;
12267
12268         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12269             !rdev->ops->tdls_mgmt)
12270                 return -EOPNOTSUPP;
12271
12272         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12273             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12274             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12275             !info->attrs[NL80211_ATTR_IE] ||
12276             !info->attrs[NL80211_ATTR_MAC])
12277                 return -EINVAL;
12278
12279         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12280         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12281         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12282         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12283         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12284         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12285                 peer_capability =
12286                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12287         link_id = nl80211_link_id_or_invalid(info->attrs);
12288
12289         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12290                               dialog_token, status_code, peer_capability,
12291                               initiator,
12292                               nla_data(info->attrs[NL80211_ATTR_IE]),
12293                               nla_len(info->attrs[NL80211_ATTR_IE]));
12294 }
12295
12296 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12297 {
12298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12299         struct net_device *dev = info->user_ptr[1];
12300         enum nl80211_tdls_operation operation;
12301         u8 *peer;
12302
12303         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12304             !rdev->ops->tdls_oper)
12305                 return -EOPNOTSUPP;
12306
12307         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12308             !info->attrs[NL80211_ATTR_MAC])
12309                 return -EINVAL;
12310
12311         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12312         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12313
12314         return rdev_tdls_oper(rdev, dev, peer, operation);
12315 }
12316
12317 static int nl80211_remain_on_channel(struct sk_buff *skb,
12318                                      struct genl_info *info)
12319 {
12320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12321         unsigned int link_id = nl80211_link_id(info->attrs);
12322         struct wireless_dev *wdev = info->user_ptr[1];
12323         struct cfg80211_chan_def chandef;
12324         struct sk_buff *msg;
12325         void *hdr;
12326         u64 cookie;
12327         u32 duration;
12328         int err;
12329
12330         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12331             !info->attrs[NL80211_ATTR_DURATION])
12332                 return -EINVAL;
12333
12334         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12335
12336         if (!rdev->ops->remain_on_channel ||
12337             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12338                 return -EOPNOTSUPP;
12339
12340         /*
12341          * We should be on that channel for at least a minimum amount of
12342          * time (10ms) but no longer than the driver supports.
12343          */
12344         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12345             duration > rdev->wiphy.max_remain_on_channel_duration)
12346                 return -EINVAL;
12347
12348         err = nl80211_parse_chandef(rdev, info, &chandef);
12349         if (err)
12350                 return err;
12351
12352         wdev_lock(wdev);
12353         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12354                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12355
12356                 oper_chandef = wdev_chandef(wdev, link_id);
12357
12358                 if (WARN_ON(!oper_chandef)) {
12359                         /* cannot happen since we must beacon to get here */
12360                         WARN_ON(1);
12361                         wdev_unlock(wdev);
12362                         return -EBUSY;
12363                 }
12364
12365                 /* note: returns first one if identical chandefs */
12366                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12367                                                              oper_chandef);
12368
12369                 if (compat_chandef != &chandef) {
12370                         wdev_unlock(wdev);
12371                         return -EBUSY;
12372                 }
12373         }
12374         wdev_unlock(wdev);
12375
12376         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12377         if (!msg)
12378                 return -ENOMEM;
12379
12380         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12381                              NL80211_CMD_REMAIN_ON_CHANNEL);
12382         if (!hdr) {
12383                 err = -ENOBUFS;
12384                 goto free_msg;
12385         }
12386
12387         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12388                                      duration, &cookie);
12389
12390         if (err)
12391                 goto free_msg;
12392
12393         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12394                               NL80211_ATTR_PAD))
12395                 goto nla_put_failure;
12396
12397         genlmsg_end(msg, hdr);
12398
12399         return genlmsg_reply(msg, info);
12400
12401  nla_put_failure:
12402         err = -ENOBUFS;
12403  free_msg:
12404         nlmsg_free(msg);
12405         return err;
12406 }
12407
12408 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12409                                             struct genl_info *info)
12410 {
12411         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12412         struct wireless_dev *wdev = info->user_ptr[1];
12413         u64 cookie;
12414
12415         if (!info->attrs[NL80211_ATTR_COOKIE])
12416                 return -EINVAL;
12417
12418         if (!rdev->ops->cancel_remain_on_channel)
12419                 return -EOPNOTSUPP;
12420
12421         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12422
12423         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12424 }
12425
12426 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12427                                        struct genl_info *info)
12428 {
12429         struct cfg80211_bitrate_mask mask;
12430         unsigned int link_id = nl80211_link_id(info->attrs);
12431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12432         struct net_device *dev = info->user_ptr[1];
12433         struct wireless_dev *wdev = dev->ieee80211_ptr;
12434         int err;
12435
12436         if (!rdev->ops->set_bitrate_mask)
12437                 return -EOPNOTSUPP;
12438
12439         wdev_lock(wdev);
12440         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12441                                             NL80211_ATTR_TX_RATES, &mask,
12442                                             dev, true, link_id);
12443         if (err)
12444                 goto out;
12445
12446         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12447 out:
12448         wdev_unlock(wdev);
12449         return err;
12450 }
12451
12452 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12453 {
12454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12455         struct wireless_dev *wdev = info->user_ptr[1];
12456         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12457
12458         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12459                 return -EINVAL;
12460
12461         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12462                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12463
12464         switch (wdev->iftype) {
12465         case NL80211_IFTYPE_STATION:
12466         case NL80211_IFTYPE_ADHOC:
12467         case NL80211_IFTYPE_P2P_CLIENT:
12468         case NL80211_IFTYPE_AP:
12469         case NL80211_IFTYPE_AP_VLAN:
12470         case NL80211_IFTYPE_MESH_POINT:
12471         case NL80211_IFTYPE_P2P_GO:
12472         case NL80211_IFTYPE_P2P_DEVICE:
12473                 break;
12474         case NL80211_IFTYPE_NAN:
12475                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12476                                              NL80211_EXT_FEATURE_SECURE_NAN))
12477                         return -EOPNOTSUPP;
12478                 break;
12479         default:
12480                 return -EOPNOTSUPP;
12481         }
12482
12483         /* not much point in registering if we can't reply */
12484         if (!rdev->ops->mgmt_tx)
12485                 return -EOPNOTSUPP;
12486
12487         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12488             !wiphy_ext_feature_isset(&rdev->wiphy,
12489                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12490                 GENL_SET_ERR_MSG(info,
12491                                  "multicast RX registrations are not supported");
12492                 return -EOPNOTSUPP;
12493         }
12494
12495         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12496                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12497                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12498                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12499                                            info->extack);
12500 }
12501
12502 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12503 {
12504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12505         struct wireless_dev *wdev = info->user_ptr[1];
12506         struct cfg80211_chan_def chandef;
12507         int err;
12508         void *hdr = NULL;
12509         u64 cookie;
12510         struct sk_buff *msg = NULL;
12511         struct cfg80211_mgmt_tx_params params = {
12512                 .dont_wait_for_ack =
12513                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12514         };
12515
12516         if (!info->attrs[NL80211_ATTR_FRAME])
12517                 return -EINVAL;
12518
12519         if (!rdev->ops->mgmt_tx)
12520                 return -EOPNOTSUPP;
12521
12522         switch (wdev->iftype) {
12523         case NL80211_IFTYPE_P2P_DEVICE:
12524                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12525                         return -EINVAL;
12526                 break;
12527         case NL80211_IFTYPE_STATION:
12528         case NL80211_IFTYPE_ADHOC:
12529         case NL80211_IFTYPE_P2P_CLIENT:
12530         case NL80211_IFTYPE_AP:
12531         case NL80211_IFTYPE_AP_VLAN:
12532         case NL80211_IFTYPE_MESH_POINT:
12533         case NL80211_IFTYPE_P2P_GO:
12534                 break;
12535         case NL80211_IFTYPE_NAN:
12536                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12537                                              NL80211_EXT_FEATURE_SECURE_NAN))
12538                         return -EOPNOTSUPP;
12539                 break;
12540         default:
12541                 return -EOPNOTSUPP;
12542         }
12543
12544         if (info->attrs[NL80211_ATTR_DURATION]) {
12545                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12546                         return -EINVAL;
12547                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12548
12549                 /*
12550                  * We should wait on the channel for at least a minimum amount
12551                  * of time (10ms) but no longer than the driver supports.
12552                  */
12553                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12554                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12555                         return -EINVAL;
12556         }
12557
12558         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12559
12560         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12561                 return -EINVAL;
12562
12563         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12564
12565         /* get the channel if any has been specified, otherwise pass NULL to
12566          * the driver. The latter will use the current one
12567          */
12568         chandef.chan = NULL;
12569         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12570                 err = nl80211_parse_chandef(rdev, info, &chandef);
12571                 if (err)
12572                         return err;
12573         }
12574
12575         if (!chandef.chan && params.offchan)
12576                 return -EINVAL;
12577
12578         wdev_lock(wdev);
12579         if (params.offchan &&
12580             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12581                 wdev_unlock(wdev);
12582                 return -EBUSY;
12583         }
12584
12585         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12586         /*
12587          * This now races due to the unlock, but we cannot check
12588          * the valid links for the _station_ anyway, so that's up
12589          * to the driver.
12590          */
12591         if (params.link_id >= 0 &&
12592             !(wdev->valid_links & BIT(params.link_id))) {
12593                 wdev_unlock(wdev);
12594                 return -EINVAL;
12595         }
12596         wdev_unlock(wdev);
12597
12598         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12599         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12600
12601         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12602                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12603                 int i;
12604
12605                 if (len % sizeof(u16))
12606                         return -EINVAL;
12607
12608                 params.n_csa_offsets = len / sizeof(u16);
12609                 params.csa_offsets =
12610                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12611
12612                 /* check that all the offsets fit the frame */
12613                 for (i = 0; i < params.n_csa_offsets; i++) {
12614                         if (params.csa_offsets[i] >= params.len)
12615                                 return -EINVAL;
12616                 }
12617         }
12618
12619         if (!params.dont_wait_for_ack) {
12620                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12621                 if (!msg)
12622                         return -ENOMEM;
12623
12624                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12625                                      NL80211_CMD_FRAME);
12626                 if (!hdr) {
12627                         err = -ENOBUFS;
12628                         goto free_msg;
12629                 }
12630         }
12631
12632         params.chan = chandef.chan;
12633         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12634         if (err)
12635                 goto free_msg;
12636
12637         if (msg) {
12638                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12639                                       NL80211_ATTR_PAD))
12640                         goto nla_put_failure;
12641
12642                 genlmsg_end(msg, hdr);
12643                 return genlmsg_reply(msg, info);
12644         }
12645
12646         return 0;
12647
12648  nla_put_failure:
12649         err = -ENOBUFS;
12650  free_msg:
12651         nlmsg_free(msg);
12652         return err;
12653 }
12654
12655 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12656 {
12657         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12658         struct wireless_dev *wdev = info->user_ptr[1];
12659         u64 cookie;
12660
12661         if (!info->attrs[NL80211_ATTR_COOKIE])
12662                 return -EINVAL;
12663
12664         if (!rdev->ops->mgmt_tx_cancel_wait)
12665                 return -EOPNOTSUPP;
12666
12667         switch (wdev->iftype) {
12668         case NL80211_IFTYPE_STATION:
12669         case NL80211_IFTYPE_ADHOC:
12670         case NL80211_IFTYPE_P2P_CLIENT:
12671         case NL80211_IFTYPE_AP:
12672         case NL80211_IFTYPE_AP_VLAN:
12673         case NL80211_IFTYPE_P2P_GO:
12674         case NL80211_IFTYPE_P2P_DEVICE:
12675                 break;
12676         case NL80211_IFTYPE_NAN:
12677                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12678                                              NL80211_EXT_FEATURE_SECURE_NAN))
12679                         return -EOPNOTSUPP;
12680                 break;
12681         default:
12682                 return -EOPNOTSUPP;
12683         }
12684
12685         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12686
12687         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12688 }
12689
12690 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12691 {
12692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12693         struct wireless_dev *wdev;
12694         struct net_device *dev = info->user_ptr[1];
12695         u8 ps_state;
12696         bool state;
12697         int err;
12698
12699         if (!info->attrs[NL80211_ATTR_PS_STATE])
12700                 return -EINVAL;
12701
12702         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12703
12704         wdev = dev->ieee80211_ptr;
12705
12706         if (!rdev->ops->set_power_mgmt)
12707                 return -EOPNOTSUPP;
12708
12709         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12710
12711         if (state == wdev->ps)
12712                 return 0;
12713
12714         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12715         if (!err)
12716                 wdev->ps = state;
12717         return err;
12718 }
12719
12720 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12721 {
12722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12723         enum nl80211_ps_state ps_state;
12724         struct wireless_dev *wdev;
12725         struct net_device *dev = info->user_ptr[1];
12726         struct sk_buff *msg;
12727         void *hdr;
12728         int err;
12729
12730         wdev = dev->ieee80211_ptr;
12731
12732         if (!rdev->ops->set_power_mgmt)
12733                 return -EOPNOTSUPP;
12734
12735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12736         if (!msg)
12737                 return -ENOMEM;
12738
12739         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12740                              NL80211_CMD_GET_POWER_SAVE);
12741         if (!hdr) {
12742                 err = -ENOBUFS;
12743                 goto free_msg;
12744         }
12745
12746         if (wdev->ps)
12747                 ps_state = NL80211_PS_ENABLED;
12748         else
12749                 ps_state = NL80211_PS_DISABLED;
12750
12751         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12752                 goto nla_put_failure;
12753
12754         genlmsg_end(msg, hdr);
12755         return genlmsg_reply(msg, info);
12756
12757  nla_put_failure:
12758         err = -ENOBUFS;
12759  free_msg:
12760         nlmsg_free(msg);
12761         return err;
12762 }
12763
12764 static const struct nla_policy
12765 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12766         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12767         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12768         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12769         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12770         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12771         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12772         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12773 };
12774
12775 static int nl80211_set_cqm_txe(struct genl_info *info,
12776                                u32 rate, u32 pkts, u32 intvl)
12777 {
12778         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12779         struct net_device *dev = info->user_ptr[1];
12780         struct wireless_dev *wdev = dev->ieee80211_ptr;
12781
12782         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12783                 return -EINVAL;
12784
12785         if (!rdev->ops->set_cqm_txe_config)
12786                 return -EOPNOTSUPP;
12787
12788         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12789             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12790                 return -EOPNOTSUPP;
12791
12792         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12793 }
12794
12795 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12796                                     struct net_device *dev)
12797 {
12798         struct wireless_dev *wdev = dev->ieee80211_ptr;
12799         s32 last, low, high;
12800         u32 hyst;
12801         int i, n, low_index;
12802         int err;
12803
12804         /* RSSI reporting disabled? */
12805         if (!wdev->cqm_config)
12806                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12807
12808         /*
12809          * Obtain current RSSI value if possible, if not and no RSSI threshold
12810          * event has been received yet, we should receive an event after a
12811          * connection is established and enough beacons received to calculate
12812          * the average.
12813          */
12814         if (!wdev->cqm_config->last_rssi_event_value &&
12815             wdev->links[0].client.current_bss &&
12816             rdev->ops->get_station) {
12817                 struct station_info sinfo = {};
12818                 u8 *mac_addr;
12819
12820                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12821
12822                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12823                 if (err)
12824                         return err;
12825
12826                 cfg80211_sinfo_release_content(&sinfo);
12827                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12828                         wdev->cqm_config->last_rssi_event_value =
12829                                 (s8) sinfo.rx_beacon_signal_avg;
12830         }
12831
12832         last = wdev->cqm_config->last_rssi_event_value;
12833         hyst = wdev->cqm_config->rssi_hyst;
12834         n = wdev->cqm_config->n_rssi_thresholds;
12835
12836         for (i = 0; i < n; i++) {
12837                 i = array_index_nospec(i, n);
12838                 if (last < wdev->cqm_config->rssi_thresholds[i])
12839                         break;
12840         }
12841
12842         low_index = i - 1;
12843         if (low_index >= 0) {
12844                 low_index = array_index_nospec(low_index, n);
12845                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12846         } else {
12847                 low = S32_MIN;
12848         }
12849         if (i < n) {
12850                 i = array_index_nospec(i, n);
12851                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12852         } else {
12853                 high = S32_MAX;
12854         }
12855
12856         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12857 }
12858
12859 static int nl80211_set_cqm_rssi(struct genl_info *info,
12860                                 const s32 *thresholds, int n_thresholds,
12861                                 u32 hysteresis)
12862 {
12863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12864         struct net_device *dev = info->user_ptr[1];
12865         struct wireless_dev *wdev = dev->ieee80211_ptr;
12866         int i, err;
12867         s32 prev = S32_MIN;
12868
12869         /* Check all values negative and sorted */
12870         for (i = 0; i < n_thresholds; i++) {
12871                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12872                         return -EINVAL;
12873
12874                 prev = thresholds[i];
12875         }
12876
12877         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12878             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12879                 return -EOPNOTSUPP;
12880
12881         wdev_lock(wdev);
12882         cfg80211_cqm_config_free(wdev);
12883         wdev_unlock(wdev);
12884
12885         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12886                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12887                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12888
12889                 return rdev_set_cqm_rssi_config(rdev, dev,
12890                                                 thresholds[0], hysteresis);
12891         }
12892
12893         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12894                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12895                 return -EOPNOTSUPP;
12896
12897         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12898                 n_thresholds = 0;
12899
12900         wdev_lock(wdev);
12901         if (n_thresholds) {
12902                 struct cfg80211_cqm_config *cqm_config;
12903
12904                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12905                                                  n_thresholds),
12906                                      GFP_KERNEL);
12907                 if (!cqm_config) {
12908                         err = -ENOMEM;
12909                         goto unlock;
12910                 }
12911
12912                 cqm_config->rssi_hyst = hysteresis;
12913                 cqm_config->n_rssi_thresholds = n_thresholds;
12914                 memcpy(cqm_config->rssi_thresholds, thresholds,
12915                        flex_array_size(cqm_config, rssi_thresholds,
12916                                        n_thresholds));
12917
12918                 wdev->cqm_config = cqm_config;
12919         }
12920
12921         err = cfg80211_cqm_rssi_update(rdev, dev);
12922
12923 unlock:
12924         wdev_unlock(wdev);
12925
12926         return err;
12927 }
12928
12929 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12930 {
12931         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12932         struct nlattr *cqm;
12933         int err;
12934
12935         cqm = info->attrs[NL80211_ATTR_CQM];
12936         if (!cqm)
12937                 return -EINVAL;
12938
12939         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12940                                           nl80211_attr_cqm_policy,
12941                                           info->extack);
12942         if (err)
12943                 return err;
12944
12945         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12946             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12947                 const s32 *thresholds =
12948                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12949                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12950                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12951
12952                 if (len % 4)
12953                         return -EINVAL;
12954
12955                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12956                                             hysteresis);
12957         }
12958
12959         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12960             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12961             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12962                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12963                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12964                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12965
12966                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12967         }
12968
12969         return -EINVAL;
12970 }
12971
12972 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12973 {
12974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12975         struct net_device *dev = info->user_ptr[1];
12976         struct ocb_setup setup = {};
12977         int err;
12978
12979         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12980         if (err)
12981                 return err;
12982
12983         return cfg80211_join_ocb(rdev, dev, &setup);
12984 }
12985
12986 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12987 {
12988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12989         struct net_device *dev = info->user_ptr[1];
12990
12991         return cfg80211_leave_ocb(rdev, dev);
12992 }
12993
12994 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12995 {
12996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12997         struct net_device *dev = info->user_ptr[1];
12998         struct mesh_config cfg;
12999         struct mesh_setup setup;
13000         int err;
13001
13002         /* start with default */
13003         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13004         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13005
13006         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13007                 /* and parse parameters if given */
13008                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13009                 if (err)
13010                         return err;
13011         }
13012
13013         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13014             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13015                 return -EINVAL;
13016
13017         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13018         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13019
13020         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13021             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13022                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13023                         return -EINVAL;
13024
13025         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13026                 setup.beacon_interval =
13027                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13028
13029                 err = cfg80211_validate_beacon_int(rdev,
13030                                                    NL80211_IFTYPE_MESH_POINT,
13031                                                    setup.beacon_interval);
13032                 if (err)
13033                         return err;
13034         }
13035
13036         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13037                 setup.dtim_period =
13038                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13039                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13040                         return -EINVAL;
13041         }
13042
13043         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13044                 /* parse additional setup parameters if given */
13045                 err = nl80211_parse_mesh_setup(info, &setup);
13046                 if (err)
13047                         return err;
13048         }
13049
13050         if (setup.user_mpm)
13051                 cfg.auto_open_plinks = false;
13052
13053         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13054                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13055                 if (err)
13056                         return err;
13057         } else {
13058                 /* __cfg80211_join_mesh() will sort it out */
13059                 setup.chandef.chan = NULL;
13060         }
13061
13062         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13063                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13064                 int n_rates =
13065                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13066                 struct ieee80211_supported_band *sband;
13067
13068                 if (!setup.chandef.chan)
13069                         return -EINVAL;
13070
13071                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13072
13073                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13074                                              &setup.basic_rates);
13075                 if (err)
13076                         return err;
13077         }
13078
13079         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13080                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13081                                                     NL80211_ATTR_TX_RATES,
13082                                                     &setup.beacon_rate,
13083                                                     dev, false, 0);
13084                 if (err)
13085                         return err;
13086
13087                 if (!setup.chandef.chan)
13088                         return -EINVAL;
13089
13090                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13091                                               &setup.beacon_rate);
13092                 if (err)
13093                         return err;
13094         }
13095
13096         setup.userspace_handles_dfs =
13097                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13098
13099         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13100                 int r = validate_pae_over_nl80211(rdev, info);
13101
13102                 if (r < 0)
13103                         return r;
13104
13105                 setup.control_port_over_nl80211 = true;
13106         }
13107
13108         wdev_lock(dev->ieee80211_ptr);
13109         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13110         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13111                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13112         wdev_unlock(dev->ieee80211_ptr);
13113
13114         return err;
13115 }
13116
13117 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13118 {
13119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13120         struct net_device *dev = info->user_ptr[1];
13121
13122         return cfg80211_leave_mesh(rdev, dev);
13123 }
13124
13125 #ifdef CONFIG_PM
13126 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13127                                         struct cfg80211_registered_device *rdev)
13128 {
13129         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13130         struct nlattr *nl_pats, *nl_pat;
13131         int i, pat_len;
13132
13133         if (!wowlan->n_patterns)
13134                 return 0;
13135
13136         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13137         if (!nl_pats)
13138                 return -ENOBUFS;
13139
13140         for (i = 0; i < wowlan->n_patterns; i++) {
13141                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13142                 if (!nl_pat)
13143                         return -ENOBUFS;
13144                 pat_len = wowlan->patterns[i].pattern_len;
13145                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13146                             wowlan->patterns[i].mask) ||
13147                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13148                             wowlan->patterns[i].pattern) ||
13149                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13150                                 wowlan->patterns[i].pkt_offset))
13151                         return -ENOBUFS;
13152                 nla_nest_end(msg, nl_pat);
13153         }
13154         nla_nest_end(msg, nl_pats);
13155
13156         return 0;
13157 }
13158
13159 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13160                                    struct cfg80211_wowlan_tcp *tcp)
13161 {
13162         struct nlattr *nl_tcp;
13163
13164         if (!tcp)
13165                 return 0;
13166
13167         nl_tcp = nla_nest_start_noflag(msg,
13168                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13169         if (!nl_tcp)
13170                 return -ENOBUFS;
13171
13172         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13173             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13174             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13175             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13176             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13177             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13178                     tcp->payload_len, tcp->payload) ||
13179             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13180                         tcp->data_interval) ||
13181             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13182                     tcp->wake_len, tcp->wake_data) ||
13183             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13184                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13185                 return -ENOBUFS;
13186
13187         if (tcp->payload_seq.len &&
13188             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13189                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13190                 return -ENOBUFS;
13191
13192         if (tcp->payload_tok.len &&
13193             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13194                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13195                     &tcp->payload_tok))
13196                 return -ENOBUFS;
13197
13198         nla_nest_end(msg, nl_tcp);
13199
13200         return 0;
13201 }
13202
13203 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13204                                   struct cfg80211_sched_scan_request *req)
13205 {
13206         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13207         int i;
13208
13209         if (!req)
13210                 return 0;
13211
13212         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13213         if (!nd)
13214                 return -ENOBUFS;
13215
13216         if (req->n_scan_plans == 1 &&
13217             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13218                         req->scan_plans[0].interval * 1000))
13219                 return -ENOBUFS;
13220
13221         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13222                 return -ENOBUFS;
13223
13224         if (req->relative_rssi_set) {
13225                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13226
13227                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13228                                req->relative_rssi))
13229                         return -ENOBUFS;
13230
13231                 rssi_adjust.band = req->rssi_adjust.band;
13232                 rssi_adjust.delta = req->rssi_adjust.delta;
13233                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13234                             sizeof(rssi_adjust), &rssi_adjust))
13235                         return -ENOBUFS;
13236         }
13237
13238         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13239         if (!freqs)
13240                 return -ENOBUFS;
13241
13242         for (i = 0; i < req->n_channels; i++) {
13243                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13244                         return -ENOBUFS;
13245         }
13246
13247         nla_nest_end(msg, freqs);
13248
13249         if (req->n_match_sets) {
13250                 matches = nla_nest_start_noflag(msg,
13251                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13252                 if (!matches)
13253                         return -ENOBUFS;
13254
13255                 for (i = 0; i < req->n_match_sets; i++) {
13256                         match = nla_nest_start_noflag(msg, i);
13257                         if (!match)
13258                                 return -ENOBUFS;
13259
13260                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13261                                     req->match_sets[i].ssid.ssid_len,
13262                                     req->match_sets[i].ssid.ssid))
13263                                 return -ENOBUFS;
13264                         nla_nest_end(msg, match);
13265                 }
13266                 nla_nest_end(msg, matches);
13267         }
13268
13269         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13270         if (!scan_plans)
13271                 return -ENOBUFS;
13272
13273         for (i = 0; i < req->n_scan_plans; i++) {
13274                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13275                 if (!scan_plan)
13276                         return -ENOBUFS;
13277
13278                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13279                                 req->scan_plans[i].interval) ||
13280                     (req->scan_plans[i].iterations &&
13281                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13282                                  req->scan_plans[i].iterations)))
13283                         return -ENOBUFS;
13284                 nla_nest_end(msg, scan_plan);
13285         }
13286         nla_nest_end(msg, scan_plans);
13287
13288         nla_nest_end(msg, nd);
13289
13290         return 0;
13291 }
13292
13293 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13294 {
13295         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13296         struct sk_buff *msg;
13297         void *hdr;
13298         u32 size = NLMSG_DEFAULT_SIZE;
13299
13300         if (!rdev->wiphy.wowlan)
13301                 return -EOPNOTSUPP;
13302
13303         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13304                 /* adjust size to have room for all the data */
13305                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13306                         rdev->wiphy.wowlan_config->tcp->payload_len +
13307                         rdev->wiphy.wowlan_config->tcp->wake_len +
13308                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13309         }
13310
13311         msg = nlmsg_new(size, GFP_KERNEL);
13312         if (!msg)
13313                 return -ENOMEM;
13314
13315         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13316                              NL80211_CMD_GET_WOWLAN);
13317         if (!hdr)
13318                 goto nla_put_failure;
13319
13320         if (rdev->wiphy.wowlan_config) {
13321                 struct nlattr *nl_wowlan;
13322
13323                 nl_wowlan = nla_nest_start_noflag(msg,
13324                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13325                 if (!nl_wowlan)
13326                         goto nla_put_failure;
13327
13328                 if ((rdev->wiphy.wowlan_config->any &&
13329                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13330                     (rdev->wiphy.wowlan_config->disconnect &&
13331                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13332                     (rdev->wiphy.wowlan_config->magic_pkt &&
13333                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13334                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13335                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13336                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13337                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13338                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13339                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13340                     (rdev->wiphy.wowlan_config->rfkill_release &&
13341                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13342                         goto nla_put_failure;
13343
13344                 if (nl80211_send_wowlan_patterns(msg, rdev))
13345                         goto nla_put_failure;
13346
13347                 if (nl80211_send_wowlan_tcp(msg,
13348                                             rdev->wiphy.wowlan_config->tcp))
13349                         goto nla_put_failure;
13350
13351                 if (nl80211_send_wowlan_nd(
13352                             msg,
13353                             rdev->wiphy.wowlan_config->nd_config))
13354                         goto nla_put_failure;
13355
13356                 nla_nest_end(msg, nl_wowlan);
13357         }
13358
13359         genlmsg_end(msg, hdr);
13360         return genlmsg_reply(msg, info);
13361
13362 nla_put_failure:
13363         nlmsg_free(msg);
13364         return -ENOBUFS;
13365 }
13366
13367 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13368                                     struct nlattr *attr,
13369                                     struct cfg80211_wowlan *trig)
13370 {
13371         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13372         struct cfg80211_wowlan_tcp *cfg;
13373         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13374         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13375         u32 size;
13376         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13377         int err, port;
13378
13379         if (!rdev->wiphy.wowlan->tcp)
13380                 return -EINVAL;
13381
13382         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13383                                           nl80211_wowlan_tcp_policy, NULL);
13384         if (err)
13385                 return err;
13386
13387         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13388             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13389             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13390             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13391             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13392             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13393             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13394             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13395                 return -EINVAL;
13396
13397         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13398         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13399                 return -EINVAL;
13400
13401         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13402                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13403             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13404                 return -EINVAL;
13405
13406         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13407         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13408                 return -EINVAL;
13409
13410         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13411         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13412                 return -EINVAL;
13413
13414         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13415                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13416
13417                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13418                 tokens_size = tokln - sizeof(*tok);
13419
13420                 if (!tok->len || tokens_size % tok->len)
13421                         return -EINVAL;
13422                 if (!rdev->wiphy.wowlan->tcp->tok)
13423                         return -EINVAL;
13424                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13425                         return -EINVAL;
13426                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13427                         return -EINVAL;
13428                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13429                         return -EINVAL;
13430                 if (tok->offset + tok->len > data_size)
13431                         return -EINVAL;
13432         }
13433
13434         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13435                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13436                 if (!rdev->wiphy.wowlan->tcp->seq)
13437                         return -EINVAL;
13438                 if (seq->len == 0 || seq->len > 4)
13439                         return -EINVAL;
13440                 if (seq->len + seq->offset > data_size)
13441                         return -EINVAL;
13442         }
13443
13444         size = sizeof(*cfg);
13445         size += data_size;
13446         size += wake_size + wake_mask_size;
13447         size += tokens_size;
13448
13449         cfg = kzalloc(size, GFP_KERNEL);
13450         if (!cfg)
13451                 return -ENOMEM;
13452         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13453         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13454         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13455                ETH_ALEN);
13456         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13457                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13458         else
13459                 port = 0;
13460 #ifdef CONFIG_INET
13461         /* allocate a socket and port for it and use it */
13462         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13463                             IPPROTO_TCP, &cfg->sock, 1);
13464         if (err) {
13465                 kfree(cfg);
13466                 return err;
13467         }
13468         if (inet_csk_get_port(cfg->sock->sk, port)) {
13469                 sock_release(cfg->sock);
13470                 kfree(cfg);
13471                 return -EADDRINUSE;
13472         }
13473         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13474 #else
13475         if (!port) {
13476                 kfree(cfg);
13477                 return -EINVAL;
13478         }
13479         cfg->src_port = port;
13480 #endif
13481
13482         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13483         cfg->payload_len = data_size;
13484         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13485         memcpy((void *)cfg->payload,
13486                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13487                data_size);
13488         if (seq)
13489                 cfg->payload_seq = *seq;
13490         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13491         cfg->wake_len = wake_size;
13492         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13493         memcpy((void *)cfg->wake_data,
13494                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13495                wake_size);
13496         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13497                          data_size + wake_size;
13498         memcpy((void *)cfg->wake_mask,
13499                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13500                wake_mask_size);
13501         if (tok) {
13502                 cfg->tokens_size = tokens_size;
13503                 cfg->payload_tok = *tok;
13504                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13505                        tokens_size);
13506         }
13507
13508         trig->tcp = cfg;
13509
13510         return 0;
13511 }
13512
13513 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13514                                    const struct wiphy_wowlan_support *wowlan,
13515                                    struct nlattr *attr,
13516                                    struct cfg80211_wowlan *trig)
13517 {
13518         struct nlattr **tb;
13519         int err;
13520
13521         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13522         if (!tb)
13523                 return -ENOMEM;
13524
13525         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13526                 err = -EOPNOTSUPP;
13527                 goto out;
13528         }
13529
13530         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13531                                           nl80211_policy, NULL);
13532         if (err)
13533                 goto out;
13534
13535         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13536                                                    wowlan->max_nd_match_sets);
13537         err = PTR_ERR_OR_ZERO(trig->nd_config);
13538         if (err)
13539                 trig->nd_config = NULL;
13540
13541 out:
13542         kfree(tb);
13543         return err;
13544 }
13545
13546 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13547 {
13548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13549         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13550         struct cfg80211_wowlan new_triggers = {};
13551         struct cfg80211_wowlan *ntrig;
13552         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13553         int err, i;
13554         bool prev_enabled = rdev->wiphy.wowlan_config;
13555         bool regular = false;
13556
13557         if (!wowlan)
13558                 return -EOPNOTSUPP;
13559
13560         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13561                 cfg80211_rdev_free_wowlan(rdev);
13562                 rdev->wiphy.wowlan_config = NULL;
13563                 goto set_wakeup;
13564         }
13565
13566         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13567                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13568                                           nl80211_wowlan_policy, info->extack);
13569         if (err)
13570                 return err;
13571
13572         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13573                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13574                         return -EINVAL;
13575                 new_triggers.any = true;
13576         }
13577
13578         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13579                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13580                         return -EINVAL;
13581                 new_triggers.disconnect = true;
13582                 regular = true;
13583         }
13584
13585         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13586                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13587                         return -EINVAL;
13588                 new_triggers.magic_pkt = true;
13589                 regular = true;
13590         }
13591
13592         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13593                 return -EINVAL;
13594
13595         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13596                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13597                         return -EINVAL;
13598                 new_triggers.gtk_rekey_failure = true;
13599                 regular = true;
13600         }
13601
13602         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13603                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13604                         return -EINVAL;
13605                 new_triggers.eap_identity_req = true;
13606                 regular = true;
13607         }
13608
13609         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13610                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13611                         return -EINVAL;
13612                 new_triggers.four_way_handshake = true;
13613                 regular = true;
13614         }
13615
13616         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13617                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13618                         return -EINVAL;
13619                 new_triggers.rfkill_release = true;
13620                 regular = true;
13621         }
13622
13623         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13624                 struct nlattr *pat;
13625                 int n_patterns = 0;
13626                 int rem, pat_len, mask_len, pkt_offset;
13627                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13628
13629                 regular = true;
13630
13631                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13632                                     rem)
13633                         n_patterns++;
13634                 if (n_patterns > wowlan->n_patterns)
13635                         return -EINVAL;
13636
13637                 new_triggers.patterns = kcalloc(n_patterns,
13638                                                 sizeof(new_triggers.patterns[0]),
13639                                                 GFP_KERNEL);
13640                 if (!new_triggers.patterns)
13641                         return -ENOMEM;
13642
13643                 new_triggers.n_patterns = n_patterns;
13644                 i = 0;
13645
13646                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13647                                     rem) {
13648                         u8 *mask_pat;
13649
13650                         err = nla_parse_nested_deprecated(pat_tb,
13651                                                           MAX_NL80211_PKTPAT,
13652                                                           pat,
13653                                                           nl80211_packet_pattern_policy,
13654                                                           info->extack);
13655                         if (err)
13656                                 goto error;
13657
13658                         err = -EINVAL;
13659                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13660                             !pat_tb[NL80211_PKTPAT_PATTERN])
13661                                 goto error;
13662                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13663                         mask_len = DIV_ROUND_UP(pat_len, 8);
13664                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13665                                 goto error;
13666                         if (pat_len > wowlan->pattern_max_len ||
13667                             pat_len < wowlan->pattern_min_len)
13668                                 goto error;
13669
13670                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13671                                 pkt_offset = 0;
13672                         else
13673                                 pkt_offset = nla_get_u32(
13674                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13675                         if (pkt_offset > wowlan->max_pkt_offset)
13676                                 goto error;
13677                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13678
13679                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13680                         if (!mask_pat) {
13681                                 err = -ENOMEM;
13682                                 goto error;
13683                         }
13684                         new_triggers.patterns[i].mask = mask_pat;
13685                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13686                                mask_len);
13687                         mask_pat += mask_len;
13688                         new_triggers.patterns[i].pattern = mask_pat;
13689                         new_triggers.patterns[i].pattern_len = pat_len;
13690                         memcpy(mask_pat,
13691                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13692                                pat_len);
13693                         i++;
13694                 }
13695         }
13696
13697         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13698                 regular = true;
13699                 err = nl80211_parse_wowlan_tcp(
13700                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13701                         &new_triggers);
13702                 if (err)
13703                         goto error;
13704         }
13705
13706         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13707                 regular = true;
13708                 err = nl80211_parse_wowlan_nd(
13709                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13710                         &new_triggers);
13711                 if (err)
13712                         goto error;
13713         }
13714
13715         /* The 'any' trigger means the device continues operating more or less
13716          * as in its normal operation mode and wakes up the host on most of the
13717          * normal interrupts (like packet RX, ...)
13718          * It therefore makes little sense to combine with the more constrained
13719          * wakeup trigger modes.
13720          */
13721         if (new_triggers.any && regular) {
13722                 err = -EINVAL;
13723                 goto error;
13724         }
13725
13726         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13727         if (!ntrig) {
13728                 err = -ENOMEM;
13729                 goto error;
13730         }
13731         cfg80211_rdev_free_wowlan(rdev);
13732         rdev->wiphy.wowlan_config = ntrig;
13733
13734  set_wakeup:
13735         if (rdev->ops->set_wakeup &&
13736             prev_enabled != !!rdev->wiphy.wowlan_config)
13737                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13738
13739         return 0;
13740  error:
13741         for (i = 0; i < new_triggers.n_patterns; i++)
13742                 kfree(new_triggers.patterns[i].mask);
13743         kfree(new_triggers.patterns);
13744         if (new_triggers.tcp && new_triggers.tcp->sock)
13745                 sock_release(new_triggers.tcp->sock);
13746         kfree(new_triggers.tcp);
13747         kfree(new_triggers.nd_config);
13748         return err;
13749 }
13750 #endif
13751
13752 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13753                                        struct cfg80211_registered_device *rdev)
13754 {
13755         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13756         int i, j, pat_len;
13757         struct cfg80211_coalesce_rules *rule;
13758
13759         if (!rdev->coalesce->n_rules)
13760                 return 0;
13761
13762         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13763         if (!nl_rules)
13764                 return -ENOBUFS;
13765
13766         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13767                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13768                 if (!nl_rule)
13769                         return -ENOBUFS;
13770
13771                 rule = &rdev->coalesce->rules[i];
13772                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13773                                 rule->delay))
13774                         return -ENOBUFS;
13775
13776                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13777                                 rule->condition))
13778                         return -ENOBUFS;
13779
13780                 nl_pats = nla_nest_start_noflag(msg,
13781                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13782                 if (!nl_pats)
13783                         return -ENOBUFS;
13784
13785                 for (j = 0; j < rule->n_patterns; j++) {
13786                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13787                         if (!nl_pat)
13788                                 return -ENOBUFS;
13789                         pat_len = rule->patterns[j].pattern_len;
13790                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13791                                     DIV_ROUND_UP(pat_len, 8),
13792                                     rule->patterns[j].mask) ||
13793                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13794                                     rule->patterns[j].pattern) ||
13795                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13796                                         rule->patterns[j].pkt_offset))
13797                                 return -ENOBUFS;
13798                         nla_nest_end(msg, nl_pat);
13799                 }
13800                 nla_nest_end(msg, nl_pats);
13801                 nla_nest_end(msg, nl_rule);
13802         }
13803         nla_nest_end(msg, nl_rules);
13804
13805         return 0;
13806 }
13807
13808 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13809 {
13810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13811         struct sk_buff *msg;
13812         void *hdr;
13813
13814         if (!rdev->wiphy.coalesce)
13815                 return -EOPNOTSUPP;
13816
13817         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13818         if (!msg)
13819                 return -ENOMEM;
13820
13821         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13822                              NL80211_CMD_GET_COALESCE);
13823         if (!hdr)
13824                 goto nla_put_failure;
13825
13826         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13827                 goto nla_put_failure;
13828
13829         genlmsg_end(msg, hdr);
13830         return genlmsg_reply(msg, info);
13831
13832 nla_put_failure:
13833         nlmsg_free(msg);
13834         return -ENOBUFS;
13835 }
13836
13837 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13838 {
13839         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13840         int i, j;
13841         struct cfg80211_coalesce_rules *rule;
13842
13843         if (!coalesce)
13844                 return;
13845
13846         for (i = 0; i < coalesce->n_rules; i++) {
13847                 rule = &coalesce->rules[i];
13848                 for (j = 0; j < rule->n_patterns; j++)
13849                         kfree(rule->patterns[j].mask);
13850                 kfree(rule->patterns);
13851         }
13852         kfree(coalesce->rules);
13853         kfree(coalesce);
13854         rdev->coalesce = NULL;
13855 }
13856
13857 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13858                                        struct nlattr *rule,
13859                                        struct cfg80211_coalesce_rules *new_rule)
13860 {
13861         int err, i;
13862         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13863         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13864         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13865         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13866
13867         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13868                                           rule, nl80211_coalesce_policy, NULL);
13869         if (err)
13870                 return err;
13871
13872         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13873                 new_rule->delay =
13874                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13875         if (new_rule->delay > coalesce->max_delay)
13876                 return -EINVAL;
13877
13878         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13879                 new_rule->condition =
13880                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13881
13882         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13883                 return -EINVAL;
13884
13885         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13886                             rem)
13887                 n_patterns++;
13888         if (n_patterns > coalesce->n_patterns)
13889                 return -EINVAL;
13890
13891         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13892                                      GFP_KERNEL);
13893         if (!new_rule->patterns)
13894                 return -ENOMEM;
13895
13896         new_rule->n_patterns = n_patterns;
13897         i = 0;
13898
13899         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13900                             rem) {
13901                 u8 *mask_pat;
13902
13903                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13904                                                   pat,
13905                                                   nl80211_packet_pattern_policy,
13906                                                   NULL);
13907                 if (err)
13908                         return err;
13909
13910                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13911                     !pat_tb[NL80211_PKTPAT_PATTERN])
13912                         return -EINVAL;
13913                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13914                 mask_len = DIV_ROUND_UP(pat_len, 8);
13915                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13916                         return -EINVAL;
13917                 if (pat_len > coalesce->pattern_max_len ||
13918                     pat_len < coalesce->pattern_min_len)
13919                         return -EINVAL;
13920
13921                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13922                         pkt_offset = 0;
13923                 else
13924                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13925                 if (pkt_offset > coalesce->max_pkt_offset)
13926                         return -EINVAL;
13927                 new_rule->patterns[i].pkt_offset = pkt_offset;
13928
13929                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13930                 if (!mask_pat)
13931                         return -ENOMEM;
13932
13933                 new_rule->patterns[i].mask = mask_pat;
13934                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13935                        mask_len);
13936
13937                 mask_pat += mask_len;
13938                 new_rule->patterns[i].pattern = mask_pat;
13939                 new_rule->patterns[i].pattern_len = pat_len;
13940                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13941                        pat_len);
13942                 i++;
13943         }
13944
13945         return 0;
13946 }
13947
13948 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13949 {
13950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13951         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13952         struct cfg80211_coalesce new_coalesce = {};
13953         struct cfg80211_coalesce *n_coalesce;
13954         int err, rem_rule, n_rules = 0, i, j;
13955         struct nlattr *rule;
13956         struct cfg80211_coalesce_rules *tmp_rule;
13957
13958         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13959                 return -EOPNOTSUPP;
13960
13961         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13962                 cfg80211_rdev_free_coalesce(rdev);
13963                 rdev_set_coalesce(rdev, NULL);
13964                 return 0;
13965         }
13966
13967         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13968                             rem_rule)
13969                 n_rules++;
13970         if (n_rules > coalesce->n_rules)
13971                 return -EINVAL;
13972
13973         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13974                                      GFP_KERNEL);
13975         if (!new_coalesce.rules)
13976                 return -ENOMEM;
13977
13978         new_coalesce.n_rules = n_rules;
13979         i = 0;
13980
13981         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13982                             rem_rule) {
13983                 err = nl80211_parse_coalesce_rule(rdev, rule,
13984                                                   &new_coalesce.rules[i]);
13985                 if (err)
13986                         goto error;
13987
13988                 i++;
13989         }
13990
13991         err = rdev_set_coalesce(rdev, &new_coalesce);
13992         if (err)
13993                 goto error;
13994
13995         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13996         if (!n_coalesce) {
13997                 err = -ENOMEM;
13998                 goto error;
13999         }
14000         cfg80211_rdev_free_coalesce(rdev);
14001         rdev->coalesce = n_coalesce;
14002
14003         return 0;
14004 error:
14005         for (i = 0; i < new_coalesce.n_rules; i++) {
14006                 tmp_rule = &new_coalesce.rules[i];
14007                 for (j = 0; j < tmp_rule->n_patterns; j++)
14008                         kfree(tmp_rule->patterns[j].mask);
14009                 kfree(tmp_rule->patterns);
14010         }
14011         kfree(new_coalesce.rules);
14012
14013         return err;
14014 }
14015
14016 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14017 {
14018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14019         struct net_device *dev = info->user_ptr[1];
14020         struct wireless_dev *wdev = dev->ieee80211_ptr;
14021         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14022         struct cfg80211_gtk_rekey_data rekey_data = {};
14023         int err;
14024
14025         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14026                 return -EINVAL;
14027
14028         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14029                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14030                                           nl80211_rekey_policy, info->extack);
14031         if (err)
14032                 return err;
14033
14034         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14035             !tb[NL80211_REKEY_DATA_KCK])
14036                 return -EINVAL;
14037         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14038             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14039               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14040                 return -ERANGE;
14041         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14042             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14043               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14044              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14045                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14046                 return -ERANGE;
14047
14048         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14049         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14050         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14051         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14052         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14053         if (tb[NL80211_REKEY_DATA_AKM])
14054                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14055
14056         wdev_lock(wdev);
14057         if (!wdev->connected) {
14058                 err = -ENOTCONN;
14059                 goto out;
14060         }
14061
14062         if (!rdev->ops->set_rekey_data) {
14063                 err = -EOPNOTSUPP;
14064                 goto out;
14065         }
14066
14067         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
14068  out:
14069         wdev_unlock(wdev);
14070         return err;
14071 }
14072
14073 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14074                                              struct genl_info *info)
14075 {
14076         struct net_device *dev = info->user_ptr[1];
14077         struct wireless_dev *wdev = dev->ieee80211_ptr;
14078
14079         if (wdev->iftype != NL80211_IFTYPE_AP &&
14080             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14081                 return -EINVAL;
14082
14083         if (wdev->ap_unexpected_nlportid)
14084                 return -EBUSY;
14085
14086         wdev->ap_unexpected_nlportid = info->snd_portid;
14087         return 0;
14088 }
14089
14090 static int nl80211_probe_client(struct sk_buff *skb,
14091                                 struct genl_info *info)
14092 {
14093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14094         struct net_device *dev = info->user_ptr[1];
14095         struct wireless_dev *wdev = dev->ieee80211_ptr;
14096         struct sk_buff *msg;
14097         void *hdr;
14098         const u8 *addr;
14099         u64 cookie;
14100         int err;
14101
14102         if (wdev->iftype != NL80211_IFTYPE_AP &&
14103             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14104                 return -EOPNOTSUPP;
14105
14106         if (!info->attrs[NL80211_ATTR_MAC])
14107                 return -EINVAL;
14108
14109         if (!rdev->ops->probe_client)
14110                 return -EOPNOTSUPP;
14111
14112         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14113         if (!msg)
14114                 return -ENOMEM;
14115
14116         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14117                              NL80211_CMD_PROBE_CLIENT);
14118         if (!hdr) {
14119                 err = -ENOBUFS;
14120                 goto free_msg;
14121         }
14122
14123         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14124
14125         err = rdev_probe_client(rdev, dev, addr, &cookie);
14126         if (err)
14127                 goto free_msg;
14128
14129         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14130                               NL80211_ATTR_PAD))
14131                 goto nla_put_failure;
14132
14133         genlmsg_end(msg, hdr);
14134
14135         return genlmsg_reply(msg, info);
14136
14137  nla_put_failure:
14138         err = -ENOBUFS;
14139  free_msg:
14140         nlmsg_free(msg);
14141         return err;
14142 }
14143
14144 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14145 {
14146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14147         struct cfg80211_beacon_registration *reg, *nreg;
14148         int rv;
14149
14150         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14151                 return -EOPNOTSUPP;
14152
14153         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14154         if (!nreg)
14155                 return -ENOMEM;
14156
14157         /* First, check if already registered. */
14158         spin_lock_bh(&rdev->beacon_registrations_lock);
14159         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14160                 if (reg->nlportid == info->snd_portid) {
14161                         rv = -EALREADY;
14162                         goto out_err;
14163                 }
14164         }
14165         /* Add it to the list */
14166         nreg->nlportid = info->snd_portid;
14167         list_add(&nreg->list, &rdev->beacon_registrations);
14168
14169         spin_unlock_bh(&rdev->beacon_registrations_lock);
14170
14171         return 0;
14172 out_err:
14173         spin_unlock_bh(&rdev->beacon_registrations_lock);
14174         kfree(nreg);
14175         return rv;
14176 }
14177
14178 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14179 {
14180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14181         struct wireless_dev *wdev = info->user_ptr[1];
14182         int err;
14183
14184         if (!rdev->ops->start_p2p_device)
14185                 return -EOPNOTSUPP;
14186
14187         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14188                 return -EOPNOTSUPP;
14189
14190         if (wdev_running(wdev))
14191                 return 0;
14192
14193         if (rfkill_blocked(rdev->wiphy.rfkill))
14194                 return -ERFKILL;
14195
14196         err = rdev_start_p2p_device(rdev, wdev);
14197         if (err)
14198                 return err;
14199
14200         wdev->is_running = true;
14201         rdev->opencount++;
14202
14203         return 0;
14204 }
14205
14206 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14207 {
14208         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14209         struct wireless_dev *wdev = info->user_ptr[1];
14210
14211         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14212                 return -EOPNOTSUPP;
14213
14214         if (!rdev->ops->stop_p2p_device)
14215                 return -EOPNOTSUPP;
14216
14217         cfg80211_stop_p2p_device(rdev, wdev);
14218
14219         return 0;
14220 }
14221
14222 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14223 {
14224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14225         struct wireless_dev *wdev = info->user_ptr[1];
14226         struct cfg80211_nan_conf conf = {};
14227         int err;
14228
14229         if (wdev->iftype != NL80211_IFTYPE_NAN)
14230                 return -EOPNOTSUPP;
14231
14232         if (wdev_running(wdev))
14233                 return -EEXIST;
14234
14235         if (rfkill_blocked(rdev->wiphy.rfkill))
14236                 return -ERFKILL;
14237
14238         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14239                 return -EINVAL;
14240
14241         conf.master_pref =
14242                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14243
14244         if (info->attrs[NL80211_ATTR_BANDS]) {
14245                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14246
14247                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14248                         return -EOPNOTSUPP;
14249
14250                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14251                         return -EINVAL;
14252
14253                 conf.bands = bands;
14254         }
14255
14256         err = rdev_start_nan(rdev, wdev, &conf);
14257         if (err)
14258                 return err;
14259
14260         wdev->is_running = true;
14261         rdev->opencount++;
14262
14263         return 0;
14264 }
14265
14266 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14267 {
14268         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14269         struct wireless_dev *wdev = info->user_ptr[1];
14270
14271         if (wdev->iftype != NL80211_IFTYPE_NAN)
14272                 return -EOPNOTSUPP;
14273
14274         cfg80211_stop_nan(rdev, wdev);
14275
14276         return 0;
14277 }
14278
14279 static int validate_nan_filter(struct nlattr *filter_attr)
14280 {
14281         struct nlattr *attr;
14282         int len = 0, n_entries = 0, rem;
14283
14284         nla_for_each_nested(attr, filter_attr, rem) {
14285                 len += nla_len(attr);
14286                 n_entries++;
14287         }
14288
14289         if (len >= U8_MAX)
14290                 return -EINVAL;
14291
14292         return n_entries;
14293 }
14294
14295 static int handle_nan_filter(struct nlattr *attr_filter,
14296                              struct cfg80211_nan_func *func,
14297                              bool tx)
14298 {
14299         struct nlattr *attr;
14300         int n_entries, rem, i;
14301         struct cfg80211_nan_func_filter *filter;
14302
14303         n_entries = validate_nan_filter(attr_filter);
14304         if (n_entries < 0)
14305                 return n_entries;
14306
14307         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14308
14309         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14310         if (!filter)
14311                 return -ENOMEM;
14312
14313         i = 0;
14314         nla_for_each_nested(attr, attr_filter, rem) {
14315                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14316                 if (!filter[i].filter)
14317                         goto err;
14318
14319                 filter[i].len = nla_len(attr);
14320                 i++;
14321         }
14322         if (tx) {
14323                 func->num_tx_filters = n_entries;
14324                 func->tx_filters = filter;
14325         } else {
14326                 func->num_rx_filters = n_entries;
14327                 func->rx_filters = filter;
14328         }
14329
14330         return 0;
14331
14332 err:
14333         i = 0;
14334         nla_for_each_nested(attr, attr_filter, rem) {
14335                 kfree(filter[i].filter);
14336                 i++;
14337         }
14338         kfree(filter);
14339         return -ENOMEM;
14340 }
14341
14342 static int nl80211_nan_add_func(struct sk_buff *skb,
14343                                 struct genl_info *info)
14344 {
14345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14346         struct wireless_dev *wdev = info->user_ptr[1];
14347         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14348         struct cfg80211_nan_func *func;
14349         struct sk_buff *msg = NULL;
14350         void *hdr = NULL;
14351         int err = 0;
14352
14353         if (wdev->iftype != NL80211_IFTYPE_NAN)
14354                 return -EOPNOTSUPP;
14355
14356         if (!wdev_running(wdev))
14357                 return -ENOTCONN;
14358
14359         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14360                 return -EINVAL;
14361
14362         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14363                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14364                                           nl80211_nan_func_policy,
14365                                           info->extack);
14366         if (err)
14367                 return err;
14368
14369         func = kzalloc(sizeof(*func), GFP_KERNEL);
14370         if (!func)
14371                 return -ENOMEM;
14372
14373         func->cookie = cfg80211_assign_cookie(rdev);
14374
14375         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14376                 err = -EINVAL;
14377                 goto out;
14378         }
14379
14380
14381         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14382
14383         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14384                 err = -EINVAL;
14385                 goto out;
14386         }
14387
14388         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14389                sizeof(func->service_id));
14390
14391         func->close_range =
14392                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14393
14394         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14395                 func->serv_spec_info_len =
14396                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14397                 func->serv_spec_info =
14398                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14399                                 func->serv_spec_info_len,
14400                                 GFP_KERNEL);
14401                 if (!func->serv_spec_info) {
14402                         err = -ENOMEM;
14403                         goto out;
14404                 }
14405         }
14406
14407         if (tb[NL80211_NAN_FUNC_TTL])
14408                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14409
14410         switch (func->type) {
14411         case NL80211_NAN_FUNC_PUBLISH:
14412                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14413                         err = -EINVAL;
14414                         goto out;
14415                 }
14416
14417                 func->publish_type =
14418                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14419                 func->publish_bcast =
14420                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14421
14422                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14423                         func->publish_bcast) {
14424                         err = -EINVAL;
14425                         goto out;
14426                 }
14427                 break;
14428         case NL80211_NAN_FUNC_SUBSCRIBE:
14429                 func->subscribe_active =
14430                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14431                 break;
14432         case NL80211_NAN_FUNC_FOLLOW_UP:
14433                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14434                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14435                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14436                         err = -EINVAL;
14437                         goto out;
14438                 }
14439
14440                 func->followup_id =
14441                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14442                 func->followup_reqid =
14443                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14444                 memcpy(func->followup_dest.addr,
14445                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14446                        sizeof(func->followup_dest.addr));
14447                 if (func->ttl) {
14448                         err = -EINVAL;
14449                         goto out;
14450                 }
14451                 break;
14452         default:
14453                 err = -EINVAL;
14454                 goto out;
14455         }
14456
14457         if (tb[NL80211_NAN_FUNC_SRF]) {
14458                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14459
14460                 err = nla_parse_nested_deprecated(srf_tb,
14461                                                   NL80211_NAN_SRF_ATTR_MAX,
14462                                                   tb[NL80211_NAN_FUNC_SRF],
14463                                                   nl80211_nan_srf_policy,
14464                                                   info->extack);
14465                 if (err)
14466                         goto out;
14467
14468                 func->srf_include =
14469                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14470
14471                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14472                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14473                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14474                                 err = -EINVAL;
14475                                 goto out;
14476                         }
14477
14478                         func->srf_bf_len =
14479                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14480                         func->srf_bf =
14481                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14482                                         func->srf_bf_len, GFP_KERNEL);
14483                         if (!func->srf_bf) {
14484                                 err = -ENOMEM;
14485                                 goto out;
14486                         }
14487
14488                         func->srf_bf_idx =
14489                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14490                 } else {
14491                         struct nlattr *attr, *mac_attr =
14492                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14493                         int n_entries, rem, i = 0;
14494
14495                         if (!mac_attr) {
14496                                 err = -EINVAL;
14497                                 goto out;
14498                         }
14499
14500                         n_entries = validate_acl_mac_addrs(mac_attr);
14501                         if (n_entries <= 0) {
14502                                 err = -EINVAL;
14503                                 goto out;
14504                         }
14505
14506                         func->srf_num_macs = n_entries;
14507                         func->srf_macs =
14508                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14509                                         GFP_KERNEL);
14510                         if (!func->srf_macs) {
14511                                 err = -ENOMEM;
14512                                 goto out;
14513                         }
14514
14515                         nla_for_each_nested(attr, mac_attr, rem)
14516                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14517                                        sizeof(*func->srf_macs));
14518                 }
14519         }
14520
14521         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14522                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14523                                         func, true);
14524                 if (err)
14525                         goto out;
14526         }
14527
14528         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14529                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14530                                         func, false);
14531                 if (err)
14532                         goto out;
14533         }
14534
14535         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14536         if (!msg) {
14537                 err = -ENOMEM;
14538                 goto out;
14539         }
14540
14541         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14542                              NL80211_CMD_ADD_NAN_FUNCTION);
14543         /* This can't really happen - we just allocated 4KB */
14544         if (WARN_ON(!hdr)) {
14545                 err = -ENOMEM;
14546                 goto out;
14547         }
14548
14549         err = rdev_add_nan_func(rdev, wdev, func);
14550 out:
14551         if (err < 0) {
14552                 cfg80211_free_nan_func(func);
14553                 nlmsg_free(msg);
14554                 return err;
14555         }
14556
14557         /* propagate the instance id and cookie to userspace  */
14558         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14559                               NL80211_ATTR_PAD))
14560                 goto nla_put_failure;
14561
14562         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14563         if (!func_attr)
14564                 goto nla_put_failure;
14565
14566         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14567                        func->instance_id))
14568                 goto nla_put_failure;
14569
14570         nla_nest_end(msg, func_attr);
14571
14572         genlmsg_end(msg, hdr);
14573         return genlmsg_reply(msg, info);
14574
14575 nla_put_failure:
14576         nlmsg_free(msg);
14577         return -ENOBUFS;
14578 }
14579
14580 static int nl80211_nan_del_func(struct sk_buff *skb,
14581                                struct genl_info *info)
14582 {
14583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14584         struct wireless_dev *wdev = info->user_ptr[1];
14585         u64 cookie;
14586
14587         if (wdev->iftype != NL80211_IFTYPE_NAN)
14588                 return -EOPNOTSUPP;
14589
14590         if (!wdev_running(wdev))
14591                 return -ENOTCONN;
14592
14593         if (!info->attrs[NL80211_ATTR_COOKIE])
14594                 return -EINVAL;
14595
14596         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14597
14598         rdev_del_nan_func(rdev, wdev, cookie);
14599
14600         return 0;
14601 }
14602
14603 static int nl80211_nan_change_config(struct sk_buff *skb,
14604                                      struct genl_info *info)
14605 {
14606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14607         struct wireless_dev *wdev = info->user_ptr[1];
14608         struct cfg80211_nan_conf conf = {};
14609         u32 changed = 0;
14610
14611         if (wdev->iftype != NL80211_IFTYPE_NAN)
14612                 return -EOPNOTSUPP;
14613
14614         if (!wdev_running(wdev))
14615                 return -ENOTCONN;
14616
14617         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14618                 conf.master_pref =
14619                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14620                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14621                         return -EINVAL;
14622
14623                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14624         }
14625
14626         if (info->attrs[NL80211_ATTR_BANDS]) {
14627                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14628
14629                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14630                         return -EOPNOTSUPP;
14631
14632                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14633                         return -EINVAL;
14634
14635                 conf.bands = bands;
14636                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14637         }
14638
14639         if (!changed)
14640                 return -EINVAL;
14641
14642         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14643 }
14644
14645 void cfg80211_nan_match(struct wireless_dev *wdev,
14646                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14647 {
14648         struct wiphy *wiphy = wdev->wiphy;
14649         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14650         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14651         struct sk_buff *msg;
14652         void *hdr;
14653
14654         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14655                 return;
14656
14657         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14658         if (!msg)
14659                 return;
14660
14661         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14662         if (!hdr) {
14663                 nlmsg_free(msg);
14664                 return;
14665         }
14666
14667         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14668             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14669                                          wdev->netdev->ifindex)) ||
14670             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14671                               NL80211_ATTR_PAD))
14672                 goto nla_put_failure;
14673
14674         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14675                               NL80211_ATTR_PAD) ||
14676             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14677                 goto nla_put_failure;
14678
14679         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14680         if (!match_attr)
14681                 goto nla_put_failure;
14682
14683         local_func_attr = nla_nest_start_noflag(msg,
14684                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14685         if (!local_func_attr)
14686                 goto nla_put_failure;
14687
14688         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14689                 goto nla_put_failure;
14690
14691         nla_nest_end(msg, local_func_attr);
14692
14693         peer_func_attr = nla_nest_start_noflag(msg,
14694                                                NL80211_NAN_MATCH_FUNC_PEER);
14695         if (!peer_func_attr)
14696                 goto nla_put_failure;
14697
14698         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14699             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14700                 goto nla_put_failure;
14701
14702         if (match->info && match->info_len &&
14703             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14704                     match->info))
14705                 goto nla_put_failure;
14706
14707         nla_nest_end(msg, peer_func_attr);
14708         nla_nest_end(msg, match_attr);
14709         genlmsg_end(msg, hdr);
14710
14711         if (!wdev->owner_nlportid)
14712                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14713                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14714         else
14715                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14716                                 wdev->owner_nlportid);
14717
14718         return;
14719
14720 nla_put_failure:
14721         nlmsg_free(msg);
14722 }
14723 EXPORT_SYMBOL(cfg80211_nan_match);
14724
14725 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14726                                   u8 inst_id,
14727                                   enum nl80211_nan_func_term_reason reason,
14728                                   u64 cookie, gfp_t gfp)
14729 {
14730         struct wiphy *wiphy = wdev->wiphy;
14731         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14732         struct sk_buff *msg;
14733         struct nlattr *func_attr;
14734         void *hdr;
14735
14736         if (WARN_ON(!inst_id))
14737                 return;
14738
14739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14740         if (!msg)
14741                 return;
14742
14743         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14744         if (!hdr) {
14745                 nlmsg_free(msg);
14746                 return;
14747         }
14748
14749         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14750             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14751                                          wdev->netdev->ifindex)) ||
14752             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14753                               NL80211_ATTR_PAD))
14754                 goto nla_put_failure;
14755
14756         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14757                               NL80211_ATTR_PAD))
14758                 goto nla_put_failure;
14759
14760         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14761         if (!func_attr)
14762                 goto nla_put_failure;
14763
14764         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14765             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14766                 goto nla_put_failure;
14767
14768         nla_nest_end(msg, func_attr);
14769         genlmsg_end(msg, hdr);
14770
14771         if (!wdev->owner_nlportid)
14772                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14773                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14774         else
14775                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14776                                 wdev->owner_nlportid);
14777
14778         return;
14779
14780 nla_put_failure:
14781         nlmsg_free(msg);
14782 }
14783 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14784
14785 static int nl80211_get_protocol_features(struct sk_buff *skb,
14786                                          struct genl_info *info)
14787 {
14788         void *hdr;
14789         struct sk_buff *msg;
14790
14791         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14792         if (!msg)
14793                 return -ENOMEM;
14794
14795         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14796                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14797         if (!hdr)
14798                 goto nla_put_failure;
14799
14800         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14801                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14802                 goto nla_put_failure;
14803
14804         genlmsg_end(msg, hdr);
14805         return genlmsg_reply(msg, info);
14806
14807  nla_put_failure:
14808         kfree_skb(msg);
14809         return -ENOBUFS;
14810 }
14811
14812 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14813 {
14814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14815         struct cfg80211_update_ft_ies_params ft_params;
14816         struct net_device *dev = info->user_ptr[1];
14817
14818         if (!rdev->ops->update_ft_ies)
14819                 return -EOPNOTSUPP;
14820
14821         if (!info->attrs[NL80211_ATTR_MDID] ||
14822             !info->attrs[NL80211_ATTR_IE])
14823                 return -EINVAL;
14824
14825         memset(&ft_params, 0, sizeof(ft_params));
14826         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14827         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14828         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14829
14830         return rdev_update_ft_ies(rdev, dev, &ft_params);
14831 }
14832
14833 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14834                                        struct genl_info *info)
14835 {
14836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14837         struct wireless_dev *wdev = info->user_ptr[1];
14838         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14839         u16 duration;
14840         int ret;
14841
14842         if (!rdev->ops->crit_proto_start)
14843                 return -EOPNOTSUPP;
14844
14845         if (WARN_ON(!rdev->ops->crit_proto_stop))
14846                 return -EINVAL;
14847
14848         if (rdev->crit_proto_nlportid)
14849                 return -EBUSY;
14850
14851         /* determine protocol if provided */
14852         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14853                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14854
14855         if (proto >= NUM_NL80211_CRIT_PROTO)
14856                 return -EINVAL;
14857
14858         /* timeout must be provided */
14859         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14860                 return -EINVAL;
14861
14862         duration =
14863                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14864
14865         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14866         if (!ret)
14867                 rdev->crit_proto_nlportid = info->snd_portid;
14868
14869         return ret;
14870 }
14871
14872 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14873                                       struct genl_info *info)
14874 {
14875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14876         struct wireless_dev *wdev = info->user_ptr[1];
14877
14878         if (!rdev->ops->crit_proto_stop)
14879                 return -EOPNOTSUPP;
14880
14881         if (rdev->crit_proto_nlportid) {
14882                 rdev->crit_proto_nlportid = 0;
14883                 rdev_crit_proto_stop(rdev, wdev);
14884         }
14885         return 0;
14886 }
14887
14888 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14889                                        struct nlattr *attr,
14890                                        struct netlink_ext_ack *extack)
14891 {
14892         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14893                 if (attr->nla_type & NLA_F_NESTED) {
14894                         NL_SET_ERR_MSG_ATTR(extack, attr,
14895                                             "unexpected nested data");
14896                         return -EINVAL;
14897                 }
14898
14899                 return 0;
14900         }
14901
14902         if (!(attr->nla_type & NLA_F_NESTED)) {
14903                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14904                 return -EINVAL;
14905         }
14906
14907         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14908 }
14909
14910 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14911 {
14912         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14913         struct wireless_dev *wdev =
14914                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14915                                            info->attrs);
14916         int i, err;
14917         u32 vid, subcmd;
14918
14919         if (!rdev->wiphy.vendor_commands)
14920                 return -EOPNOTSUPP;
14921
14922         if (IS_ERR(wdev)) {
14923                 err = PTR_ERR(wdev);
14924                 if (err != -EINVAL)
14925                         return err;
14926                 wdev = NULL;
14927         } else if (wdev->wiphy != &rdev->wiphy) {
14928                 return -EINVAL;
14929         }
14930
14931         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14932             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14933                 return -EINVAL;
14934
14935         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14936         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14937         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14938                 const struct wiphy_vendor_command *vcmd;
14939                 void *data = NULL;
14940                 int len = 0;
14941
14942                 vcmd = &rdev->wiphy.vendor_commands[i];
14943
14944                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14945                         continue;
14946
14947                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14948                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14949                         if (!wdev)
14950                                 return -EINVAL;
14951                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14952                             !wdev->netdev)
14953                                 return -EINVAL;
14954
14955                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14956                                 if (!wdev_running(wdev))
14957                                         return -ENETDOWN;
14958                         }
14959                 } else {
14960                         wdev = NULL;
14961                 }
14962
14963                 if (!vcmd->doit)
14964                         return -EOPNOTSUPP;
14965
14966                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14967                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14968                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14969
14970                         err = nl80211_vendor_check_policy(vcmd,
14971                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14972                                         info->extack);
14973                         if (err)
14974                                 return err;
14975                 }
14976
14977                 rdev->cur_cmd_info = info;
14978                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14979                 rdev->cur_cmd_info = NULL;
14980                 return err;
14981         }
14982
14983         return -EOPNOTSUPP;
14984 }
14985
14986 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14987                                        struct netlink_callback *cb,
14988                                        struct cfg80211_registered_device **rdev,
14989                                        struct wireless_dev **wdev)
14990 {
14991         struct nlattr **attrbuf;
14992         u32 vid, subcmd;
14993         unsigned int i;
14994         int vcmd_idx = -1;
14995         int err;
14996         void *data = NULL;
14997         unsigned int data_len = 0;
14998
14999         if (cb->args[0]) {
15000                 /* subtract the 1 again here */
15001                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15002                 struct wireless_dev *tmp;
15003
15004                 if (!wiphy)
15005                         return -ENODEV;
15006                 *rdev = wiphy_to_rdev(wiphy);
15007                 *wdev = NULL;
15008
15009                 if (cb->args[1]) {
15010                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15011                                 if (tmp->identifier == cb->args[1] - 1) {
15012                                         *wdev = tmp;
15013                                         break;
15014                                 }
15015                         }
15016                 }
15017
15018                 /* keep rtnl locked in successful case */
15019                 return 0;
15020         }
15021
15022         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15023         if (!attrbuf)
15024                 return -ENOMEM;
15025
15026         err = nlmsg_parse_deprecated(cb->nlh,
15027                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15028                                      attrbuf, nl80211_fam.maxattr,
15029                                      nl80211_policy, NULL);
15030         if (err)
15031                 goto out;
15032
15033         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15034             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15035                 err = -EINVAL;
15036                 goto out;
15037         }
15038
15039         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15040         if (IS_ERR(*wdev))
15041                 *wdev = NULL;
15042
15043         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15044         if (IS_ERR(*rdev)) {
15045                 err = PTR_ERR(*rdev);
15046                 goto out;
15047         }
15048
15049         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15050         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15051
15052         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15053                 const struct wiphy_vendor_command *vcmd;
15054
15055                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15056
15057                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15058                         continue;
15059
15060                 if (!vcmd->dumpit) {
15061                         err = -EOPNOTSUPP;
15062                         goto out;
15063                 }
15064
15065                 vcmd_idx = i;
15066                 break;
15067         }
15068
15069         if (vcmd_idx < 0) {
15070                 err = -EOPNOTSUPP;
15071                 goto out;
15072         }
15073
15074         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15075                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15076                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15077
15078                 err = nl80211_vendor_check_policy(
15079                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15080                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15081                                 cb->extack);
15082                 if (err)
15083                         goto out;
15084         }
15085
15086         /* 0 is the first index - add 1 to parse only once */
15087         cb->args[0] = (*rdev)->wiphy_idx + 1;
15088         /* add 1 to know if it was NULL */
15089         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15090         cb->args[2] = vcmd_idx;
15091         cb->args[3] = (unsigned long)data;
15092         cb->args[4] = data_len;
15093
15094         /* keep rtnl locked in successful case */
15095         err = 0;
15096 out:
15097         kfree(attrbuf);
15098         return err;
15099 }
15100
15101 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15102                                    struct netlink_callback *cb)
15103 {
15104         struct cfg80211_registered_device *rdev;
15105         struct wireless_dev *wdev;
15106         unsigned int vcmd_idx;
15107         const struct wiphy_vendor_command *vcmd;
15108         void *data;
15109         int data_len;
15110         int err;
15111         struct nlattr *vendor_data;
15112
15113         rtnl_lock();
15114         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15115         if (err)
15116                 goto out;
15117
15118         vcmd_idx = cb->args[2];
15119         data = (void *)cb->args[3];
15120         data_len = cb->args[4];
15121         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15122
15123         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15124                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15125                 if (!wdev) {
15126                         err = -EINVAL;
15127                         goto out;
15128                 }
15129                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15130                     !wdev->netdev) {
15131                         err = -EINVAL;
15132                         goto out;
15133                 }
15134
15135                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15136                         if (!wdev_running(wdev)) {
15137                                 err = -ENETDOWN;
15138                                 goto out;
15139                         }
15140                 }
15141         }
15142
15143         while (1) {
15144                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15145                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15146                                            NL80211_CMD_VENDOR);
15147                 if (!hdr)
15148                         break;
15149
15150                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15151                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15152                                                wdev_id(wdev),
15153                                                NL80211_ATTR_PAD))) {
15154                         genlmsg_cancel(skb, hdr);
15155                         break;
15156                 }
15157
15158                 vendor_data = nla_nest_start_noflag(skb,
15159                                                     NL80211_ATTR_VENDOR_DATA);
15160                 if (!vendor_data) {
15161                         genlmsg_cancel(skb, hdr);
15162                         break;
15163                 }
15164
15165                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15166                                    (unsigned long *)&cb->args[5]);
15167                 nla_nest_end(skb, vendor_data);
15168
15169                 if (err == -ENOBUFS || err == -ENOENT) {
15170                         genlmsg_cancel(skb, hdr);
15171                         break;
15172                 } else if (err <= 0) {
15173                         genlmsg_cancel(skb, hdr);
15174                         goto out;
15175                 }
15176
15177                 genlmsg_end(skb, hdr);
15178         }
15179
15180         err = skb->len;
15181  out:
15182         rtnl_unlock();
15183         return err;
15184 }
15185
15186 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15187                                            enum nl80211_commands cmd,
15188                                            enum nl80211_attrs attr,
15189                                            int approxlen)
15190 {
15191         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15192
15193         if (WARN_ON(!rdev->cur_cmd_info))
15194                 return NULL;
15195
15196         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15197                                            rdev->cur_cmd_info->snd_portid,
15198                                            rdev->cur_cmd_info->snd_seq,
15199                                            cmd, attr, NULL, GFP_KERNEL);
15200 }
15201 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15202
15203 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15204 {
15205         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15206         void *hdr = ((void **)skb->cb)[1];
15207         struct nlattr *data = ((void **)skb->cb)[2];
15208
15209         /* clear CB data for netlink core to own from now on */
15210         memset(skb->cb, 0, sizeof(skb->cb));
15211
15212         if (WARN_ON(!rdev->cur_cmd_info)) {
15213                 kfree_skb(skb);
15214                 return -EINVAL;
15215         }
15216
15217         nla_nest_end(skb, data);
15218         genlmsg_end(skb, hdr);
15219         return genlmsg_reply(skb, rdev->cur_cmd_info);
15220 }
15221 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15222
15223 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15224 {
15225         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15226
15227         if (WARN_ON(!rdev->cur_cmd_info))
15228                 return 0;
15229
15230         return rdev->cur_cmd_info->snd_portid;
15231 }
15232 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15233
15234 static int nl80211_set_qos_map(struct sk_buff *skb,
15235                                struct genl_info *info)
15236 {
15237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15238         struct cfg80211_qos_map *qos_map = NULL;
15239         struct net_device *dev = info->user_ptr[1];
15240         u8 *pos, len, num_des, des_len, des;
15241         int ret;
15242
15243         if (!rdev->ops->set_qos_map)
15244                 return -EOPNOTSUPP;
15245
15246         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15247                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15248                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15249
15250                 if (len % 2)
15251                         return -EINVAL;
15252
15253                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15254                 if (!qos_map)
15255                         return -ENOMEM;
15256
15257                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15258                 if (num_des) {
15259                         des_len = num_des *
15260                                 sizeof(struct cfg80211_dscp_exception);
15261                         memcpy(qos_map->dscp_exception, pos, des_len);
15262                         qos_map->num_des = num_des;
15263                         for (des = 0; des < num_des; des++) {
15264                                 if (qos_map->dscp_exception[des].up > 7) {
15265                                         kfree(qos_map);
15266                                         return -EINVAL;
15267                                 }
15268                         }
15269                         pos += des_len;
15270                 }
15271                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15272         }
15273
15274         wdev_lock(dev->ieee80211_ptr);
15275         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15276         if (!ret)
15277                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15278         wdev_unlock(dev->ieee80211_ptr);
15279
15280         kfree(qos_map);
15281         return ret;
15282 }
15283
15284 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15285 {
15286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15287         struct net_device *dev = info->user_ptr[1];
15288         struct wireless_dev *wdev = dev->ieee80211_ptr;
15289         const u8 *peer;
15290         u8 tsid, up;
15291         u16 admitted_time = 0;
15292         int err;
15293
15294         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15295                 return -EOPNOTSUPP;
15296
15297         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15298             !info->attrs[NL80211_ATTR_USER_PRIO])
15299                 return -EINVAL;
15300
15301         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15302         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15303
15304         /* WMM uses TIDs 0-7 even for TSPEC */
15305         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15306                 /* TODO: handle 802.11 TSPEC/admission control
15307                  * need more attributes for that (e.g. BA session requirement);
15308                  * change the WMM adminssion test above to allow both then
15309                  */
15310                 return -EINVAL;
15311         }
15312
15313         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15314
15315         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15316                 admitted_time =
15317                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15318                 if (!admitted_time)
15319                         return -EINVAL;
15320         }
15321
15322         wdev_lock(wdev);
15323         switch (wdev->iftype) {
15324         case NL80211_IFTYPE_STATION:
15325         case NL80211_IFTYPE_P2P_CLIENT:
15326                 if (wdev->connected)
15327                         break;
15328                 err = -ENOTCONN;
15329                 goto out;
15330         default:
15331                 err = -EOPNOTSUPP;
15332                 goto out;
15333         }
15334
15335         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15336
15337  out:
15338         wdev_unlock(wdev);
15339         return err;
15340 }
15341
15342 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15343 {
15344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15345         struct net_device *dev = info->user_ptr[1];
15346         struct wireless_dev *wdev = dev->ieee80211_ptr;
15347         const u8 *peer;
15348         u8 tsid;
15349         int err;
15350
15351         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15352                 return -EINVAL;
15353
15354         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15355         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15356
15357         wdev_lock(wdev);
15358         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15359         wdev_unlock(wdev);
15360
15361         return err;
15362 }
15363
15364 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15365                                        struct genl_info *info)
15366 {
15367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15368         struct net_device *dev = info->user_ptr[1];
15369         struct wireless_dev *wdev = dev->ieee80211_ptr;
15370         struct cfg80211_chan_def chandef = {};
15371         const u8 *addr;
15372         u8 oper_class;
15373         int err;
15374
15375         if (!rdev->ops->tdls_channel_switch ||
15376             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15377                 return -EOPNOTSUPP;
15378
15379         switch (dev->ieee80211_ptr->iftype) {
15380         case NL80211_IFTYPE_STATION:
15381         case NL80211_IFTYPE_P2P_CLIENT:
15382                 break;
15383         default:
15384                 return -EOPNOTSUPP;
15385         }
15386
15387         if (!info->attrs[NL80211_ATTR_MAC] ||
15388             !info->attrs[NL80211_ATTR_OPER_CLASS])
15389                 return -EINVAL;
15390
15391         err = nl80211_parse_chandef(rdev, info, &chandef);
15392         if (err)
15393                 return err;
15394
15395         /*
15396          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15397          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15398          * specification is not defined for them.
15399          */
15400         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15401             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15402             chandef.width != NL80211_CHAN_WIDTH_20)
15403                 return -EINVAL;
15404
15405         /* we will be active on the TDLS link */
15406         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15407                                            wdev->iftype))
15408                 return -EINVAL;
15409
15410         /* don't allow switching to DFS channels */
15411         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15412                 return -EINVAL;
15413
15414         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15415         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15416
15417         wdev_lock(wdev);
15418         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15419         wdev_unlock(wdev);
15420
15421         return err;
15422 }
15423
15424 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15425                                               struct genl_info *info)
15426 {
15427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15428         struct net_device *dev = info->user_ptr[1];
15429         struct wireless_dev *wdev = dev->ieee80211_ptr;
15430         const u8 *addr;
15431
15432         if (!rdev->ops->tdls_channel_switch ||
15433             !rdev->ops->tdls_cancel_channel_switch ||
15434             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15435                 return -EOPNOTSUPP;
15436
15437         switch (dev->ieee80211_ptr->iftype) {
15438         case NL80211_IFTYPE_STATION:
15439         case NL80211_IFTYPE_P2P_CLIENT:
15440                 break;
15441         default:
15442                 return -EOPNOTSUPP;
15443         }
15444
15445         if (!info->attrs[NL80211_ATTR_MAC])
15446                 return -EINVAL;
15447
15448         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15449
15450         wdev_lock(wdev);
15451         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15452         wdev_unlock(wdev);
15453
15454         return 0;
15455 }
15456
15457 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15458                                             struct genl_info *info)
15459 {
15460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15461         struct net_device *dev = info->user_ptr[1];
15462         struct wireless_dev *wdev = dev->ieee80211_ptr;
15463         const struct nlattr *nla;
15464         bool enabled;
15465
15466         if (!rdev->ops->set_multicast_to_unicast)
15467                 return -EOPNOTSUPP;
15468
15469         if (wdev->iftype != NL80211_IFTYPE_AP &&
15470             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15471                 return -EOPNOTSUPP;
15472
15473         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15474         enabled = nla_get_flag(nla);
15475
15476         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15477 }
15478
15479 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15480 {
15481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15482         struct net_device *dev = info->user_ptr[1];
15483         struct wireless_dev *wdev = dev->ieee80211_ptr;
15484         struct cfg80211_pmk_conf pmk_conf = {};
15485         int ret;
15486
15487         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15488             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15489                 return -EOPNOTSUPP;
15490
15491         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15492                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15493                 return -EOPNOTSUPP;
15494
15495         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15496                 return -EINVAL;
15497
15498         wdev_lock(wdev);
15499         if (!wdev->connected) {
15500                 ret = -ENOTCONN;
15501                 goto out;
15502         }
15503
15504         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15505         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15506                 ret = -EINVAL;
15507                 goto out;
15508         }
15509
15510         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15511         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15512         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15513             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15514                 ret = -EINVAL;
15515                 goto out;
15516         }
15517
15518         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15519                 pmk_conf.pmk_r0_name =
15520                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15521
15522         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15523 out:
15524         wdev_unlock(wdev);
15525         return ret;
15526 }
15527
15528 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15529 {
15530         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15531         struct net_device *dev = info->user_ptr[1];
15532         struct wireless_dev *wdev = dev->ieee80211_ptr;
15533         const u8 *aa;
15534         int ret;
15535
15536         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15537             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15538                 return -EOPNOTSUPP;
15539
15540         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15541                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15542                 return -EOPNOTSUPP;
15543
15544         if (!info->attrs[NL80211_ATTR_MAC])
15545                 return -EINVAL;
15546
15547         wdev_lock(wdev);
15548         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15549         ret = rdev_del_pmk(rdev, dev, aa);
15550         wdev_unlock(wdev);
15551
15552         return ret;
15553 }
15554
15555 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15556 {
15557         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15558         struct net_device *dev = info->user_ptr[1];
15559         struct cfg80211_external_auth_params params;
15560
15561         if (!rdev->ops->external_auth)
15562                 return -EOPNOTSUPP;
15563
15564         if (!info->attrs[NL80211_ATTR_SSID] &&
15565             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15566             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15567                 return -EINVAL;
15568
15569         if (!info->attrs[NL80211_ATTR_BSSID])
15570                 return -EINVAL;
15571
15572         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15573                 return -EINVAL;
15574
15575         memset(&params, 0, sizeof(params));
15576
15577         if (info->attrs[NL80211_ATTR_SSID]) {
15578                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15579                 if (params.ssid.ssid_len == 0)
15580                         return -EINVAL;
15581                 memcpy(params.ssid.ssid,
15582                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15583                        params.ssid.ssid_len);
15584         }
15585
15586         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15587                ETH_ALEN);
15588
15589         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15590
15591         if (info->attrs[NL80211_ATTR_PMKID])
15592                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15593
15594         return rdev_external_auth(rdev, dev, &params);
15595 }
15596
15597 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15598 {
15599         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15601         struct net_device *dev = info->user_ptr[1];
15602         struct wireless_dev *wdev = dev->ieee80211_ptr;
15603         const u8 *buf;
15604         size_t len;
15605         u8 *dest;
15606         u16 proto;
15607         bool noencrypt;
15608         u64 cookie = 0;
15609         int link_id;
15610         int err;
15611
15612         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15613                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15614                 return -EOPNOTSUPP;
15615
15616         if (!rdev->ops->tx_control_port)
15617                 return -EOPNOTSUPP;
15618
15619         if (!info->attrs[NL80211_ATTR_FRAME] ||
15620             !info->attrs[NL80211_ATTR_MAC] ||
15621             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15622                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15623                 return -EINVAL;
15624         }
15625
15626         wdev_lock(wdev);
15627
15628         switch (wdev->iftype) {
15629         case NL80211_IFTYPE_AP:
15630         case NL80211_IFTYPE_P2P_GO:
15631         case NL80211_IFTYPE_MESH_POINT:
15632                 break;
15633         case NL80211_IFTYPE_ADHOC:
15634                 if (wdev->u.ibss.current_bss)
15635                         break;
15636                 err = -ENOTCONN;
15637                 goto out;
15638         case NL80211_IFTYPE_STATION:
15639         case NL80211_IFTYPE_P2P_CLIENT:
15640                 if (wdev->connected)
15641                         break;
15642                 err = -ENOTCONN;
15643                 goto out;
15644         default:
15645                 err = -EOPNOTSUPP;
15646                 goto out;
15647         }
15648
15649         wdev_unlock(wdev);
15650
15651         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15652         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15653         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15654         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15655         noencrypt =
15656                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15657
15658         link_id = nl80211_link_id_or_invalid(info->attrs);
15659
15660         err = rdev_tx_control_port(rdev, dev, buf, len,
15661                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15662                                    dont_wait_for_ack ? NULL : &cookie);
15663         if (!err && !dont_wait_for_ack)
15664                 nl_set_extack_cookie_u64(info->extack, cookie);
15665         return err;
15666  out:
15667         wdev_unlock(wdev);
15668         return err;
15669 }
15670
15671 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15672                                            struct genl_info *info)
15673 {
15674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15675         struct net_device *dev = info->user_ptr[1];
15676         struct wireless_dev *wdev = dev->ieee80211_ptr;
15677         struct cfg80211_ftm_responder_stats ftm_stats = {};
15678         unsigned int link_id = nl80211_link_id(info->attrs);
15679         struct sk_buff *msg;
15680         void *hdr;
15681         struct nlattr *ftm_stats_attr;
15682         int err;
15683
15684         if (wdev->iftype != NL80211_IFTYPE_AP ||
15685             !wdev->links[link_id].ap.beacon_interval)
15686                 return -EOPNOTSUPP;
15687
15688         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15689         if (err)
15690                 return err;
15691
15692         if (!ftm_stats.filled)
15693                 return -ENODATA;
15694
15695         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15696         if (!msg)
15697                 return -ENOMEM;
15698
15699         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15700                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15701         if (!hdr)
15702                 goto nla_put_failure;
15703
15704         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15705                 goto nla_put_failure;
15706
15707         ftm_stats_attr = nla_nest_start_noflag(msg,
15708                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15709         if (!ftm_stats_attr)
15710                 goto nla_put_failure;
15711
15712 #define SET_FTM(field, name, type)                                       \
15713         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15714             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15715                              ftm_stats.field))                           \
15716                 goto nla_put_failure; } while (0)
15717 #define SET_FTM_U64(field, name)                                         \
15718         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15719             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15720                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15721                 goto nla_put_failure; } while (0)
15722
15723         SET_FTM(success_num, SUCCESS_NUM, u32);
15724         SET_FTM(partial_num, PARTIAL_NUM, u32);
15725         SET_FTM(failed_num, FAILED_NUM, u32);
15726         SET_FTM(asap_num, ASAP_NUM, u32);
15727         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15728         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15729         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15730         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15731         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15732 #undef SET_FTM
15733
15734         nla_nest_end(msg, ftm_stats_attr);
15735
15736         genlmsg_end(msg, hdr);
15737         return genlmsg_reply(msg, info);
15738
15739 nla_put_failure:
15740         nlmsg_free(msg);
15741         return -ENOBUFS;
15742 }
15743
15744 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15745 {
15746         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15747         struct cfg80211_update_owe_info owe_info;
15748         struct net_device *dev = info->user_ptr[1];
15749
15750         if (!rdev->ops->update_owe_info)
15751                 return -EOPNOTSUPP;
15752
15753         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15754             !info->attrs[NL80211_ATTR_MAC])
15755                 return -EINVAL;
15756
15757         memset(&owe_info, 0, sizeof(owe_info));
15758         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15759         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15760
15761         if (info->attrs[NL80211_ATTR_IE]) {
15762                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15763                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15764         }
15765
15766         return rdev_update_owe_info(rdev, dev, &owe_info);
15767 }
15768
15769 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15770 {
15771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15772         struct net_device *dev = info->user_ptr[1];
15773         struct wireless_dev *wdev = dev->ieee80211_ptr;
15774         struct station_info sinfo = {};
15775         const u8 *buf;
15776         size_t len;
15777         u8 *dest;
15778         int err;
15779
15780         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15781                 return -EOPNOTSUPP;
15782
15783         if (!info->attrs[NL80211_ATTR_MAC] ||
15784             !info->attrs[NL80211_ATTR_FRAME]) {
15785                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15786                 return -EINVAL;
15787         }
15788
15789         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15790                 return -EOPNOTSUPP;
15791
15792         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15793         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15794         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15795
15796         if (len < sizeof(struct ethhdr))
15797                 return -EINVAL;
15798
15799         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15800             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15801                 return -EINVAL;
15802
15803         err = rdev_get_station(rdev, dev, dest, &sinfo);
15804         if (err)
15805                 return err;
15806
15807         cfg80211_sinfo_release_content(&sinfo);
15808
15809         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15810 }
15811
15812 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15813                           struct nlattr *attrs[], struct net_device *dev,
15814                           struct cfg80211_tid_cfg *tid_conf,
15815                           struct genl_info *info, const u8 *peer,
15816                           unsigned int link_id)
15817 {
15818         struct netlink_ext_ack *extack = info->extack;
15819         u64 mask;
15820         int err;
15821
15822         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15823                 return -EINVAL;
15824
15825         tid_conf->config_override =
15826                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15827         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15828
15829         if (tid_conf->config_override) {
15830                 if (rdev->ops->reset_tid_config) {
15831                         err = rdev_reset_tid_config(rdev, dev, peer,
15832                                                     tid_conf->tids);
15833                         if (err)
15834                                 return err;
15835                 } else {
15836                         return -EINVAL;
15837                 }
15838         }
15839
15840         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15841                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15842                 tid_conf->noack =
15843                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15844         }
15845
15846         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15847                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15848                 tid_conf->retry_short =
15849                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15850
15851                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15852                         return -EINVAL;
15853         }
15854
15855         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15856                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15857                 tid_conf->retry_long =
15858                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15859
15860                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15861                         return -EINVAL;
15862         }
15863
15864         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15865                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15866                 tid_conf->ampdu =
15867                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15868         }
15869
15870         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15871                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15872                 tid_conf->rtscts =
15873                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15874         }
15875
15876         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15877                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15878                 tid_conf->amsdu =
15879                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15880         }
15881
15882         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15883                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15884
15885                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15886
15887                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15888                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15889                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15890                                                     &tid_conf->txrate_mask, dev,
15891                                                     true, link_id);
15892                         if (err)
15893                                 return err;
15894
15895                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15896                 }
15897                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15898         }
15899
15900         if (peer)
15901                 mask = rdev->wiphy.tid_config_support.peer;
15902         else
15903                 mask = rdev->wiphy.tid_config_support.vif;
15904
15905         if (tid_conf->mask & ~mask) {
15906                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15907                 return -ENOTSUPP;
15908         }
15909
15910         return 0;
15911 }
15912
15913 static int nl80211_set_tid_config(struct sk_buff *skb,
15914                                   struct genl_info *info)
15915 {
15916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15917         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15918         unsigned int link_id = nl80211_link_id(info->attrs);
15919         struct net_device *dev = info->user_ptr[1];
15920         struct cfg80211_tid_config *tid_config;
15921         struct nlattr *tid;
15922         int conf_idx = 0, rem_conf;
15923         int ret = -EINVAL;
15924         u32 num_conf = 0;
15925
15926         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15927                 return -EINVAL;
15928
15929         if (!rdev->ops->set_tid_config)
15930                 return -EOPNOTSUPP;
15931
15932         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15933                             rem_conf)
15934                 num_conf++;
15935
15936         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15937                              GFP_KERNEL);
15938         if (!tid_config)
15939                 return -ENOMEM;
15940
15941         tid_config->n_tid_conf = num_conf;
15942
15943         if (info->attrs[NL80211_ATTR_MAC])
15944                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15945
15946         wdev_lock(dev->ieee80211_ptr);
15947
15948         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15949                             rem_conf) {
15950                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15951                                        tid, NULL, NULL);
15952
15953                 if (ret)
15954                         goto bad_tid_conf;
15955
15956                 ret = parse_tid_conf(rdev, attrs, dev,
15957                                      &tid_config->tid_conf[conf_idx],
15958                                      info, tid_config->peer, link_id);
15959                 if (ret)
15960                         goto bad_tid_conf;
15961
15962                 conf_idx++;
15963         }
15964
15965         ret = rdev_set_tid_config(rdev, dev, tid_config);
15966
15967 bad_tid_conf:
15968         kfree(tid_config);
15969         wdev_unlock(dev->ieee80211_ptr);
15970         return ret;
15971 }
15972
15973 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15974 {
15975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15976         struct cfg80211_color_change_settings params = {};
15977         struct net_device *dev = info->user_ptr[1];
15978         struct wireless_dev *wdev = dev->ieee80211_ptr;
15979         struct nlattr **tb;
15980         u16 offset;
15981         int err;
15982
15983         if (!rdev->ops->color_change)
15984                 return -EOPNOTSUPP;
15985
15986         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15987                                      NL80211_EXT_FEATURE_BSS_COLOR))
15988                 return -EOPNOTSUPP;
15989
15990         if (wdev->iftype != NL80211_IFTYPE_AP)
15991                 return -EOPNOTSUPP;
15992
15993         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15994             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15995             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15996                 return -EINVAL;
15997
15998         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15999         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16000
16001         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
16002                                    info->extack);
16003         if (err)
16004                 return err;
16005
16006         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16007         if (!tb)
16008                 return -ENOMEM;
16009
16010         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16011                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16012                                nl80211_policy, info->extack);
16013         if (err)
16014                 goto out;
16015
16016         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
16017                                    info->extack);
16018         if (err)
16019                 goto out;
16020
16021         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16022                 err = -EINVAL;
16023                 goto out;
16024         }
16025
16026         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16027                 err = -EINVAL;
16028                 goto out;
16029         }
16030
16031         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16032         if (offset >= params.beacon_color_change.tail_len) {
16033                 err = -EINVAL;
16034                 goto out;
16035         }
16036
16037         if (params.beacon_color_change.tail[offset] != params.count) {
16038                 err = -EINVAL;
16039                 goto out;
16040         }
16041
16042         params.counter_offset_beacon = offset;
16043
16044         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16045                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16046                     sizeof(u16)) {
16047                         err = -EINVAL;
16048                         goto out;
16049                 }
16050
16051                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16052                 if (offset >= params.beacon_color_change.probe_resp_len) {
16053                         err = -EINVAL;
16054                         goto out;
16055                 }
16056
16057                 if (params.beacon_color_change.probe_resp[offset] !=
16058                     params.count) {
16059                         err = -EINVAL;
16060                         goto out;
16061                 }
16062
16063                 params.counter_offset_presp = offset;
16064         }
16065
16066         wdev_lock(wdev);
16067         err = rdev_color_change(rdev, dev, &params);
16068         wdev_unlock(wdev);
16069
16070 out:
16071         kfree(params.beacon_next.mbssid_ies);
16072         kfree(params.beacon_color_change.mbssid_ies);
16073         kfree(params.beacon_next.rnr_ies);
16074         kfree(params.beacon_color_change.rnr_ies);
16075         kfree(tb);
16076         return err;
16077 }
16078
16079 static int nl80211_set_fils_aad(struct sk_buff *skb,
16080                                 struct genl_info *info)
16081 {
16082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16083         struct net_device *dev = info->user_ptr[1];
16084         struct cfg80211_fils_aad fils_aad = {};
16085         u8 *nonces;
16086
16087         if (!info->attrs[NL80211_ATTR_MAC] ||
16088             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16089             !info->attrs[NL80211_ATTR_FILS_NONCES])
16090                 return -EINVAL;
16091
16092         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16093         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16094         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16095         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16096         fils_aad.snonce = nonces;
16097         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16098
16099         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16100 }
16101
16102 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16103 {
16104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16105         unsigned int link_id = nl80211_link_id(info->attrs);
16106         struct net_device *dev = info->user_ptr[1];
16107         struct wireless_dev *wdev = dev->ieee80211_ptr;
16108         int ret;
16109
16110         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16111                 return -EINVAL;
16112
16113         switch (wdev->iftype) {
16114         case NL80211_IFTYPE_AP:
16115                 break;
16116         default:
16117                 return -EINVAL;
16118         }
16119
16120         if (!info->attrs[NL80211_ATTR_MAC] ||
16121             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16122                 return -EINVAL;
16123
16124         wdev_lock(wdev);
16125         wdev->valid_links |= BIT(link_id);
16126         ether_addr_copy(wdev->links[link_id].addr,
16127                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16128
16129         ret = rdev_add_intf_link(rdev, wdev, link_id);
16130         if (ret) {
16131                 wdev->valid_links &= ~BIT(link_id);
16132                 eth_zero_addr(wdev->links[link_id].addr);
16133         }
16134         wdev_unlock(wdev);
16135
16136         return ret;
16137 }
16138
16139 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16140 {
16141         unsigned int link_id = nl80211_link_id(info->attrs);
16142         struct net_device *dev = info->user_ptr[1];
16143         struct wireless_dev *wdev = dev->ieee80211_ptr;
16144
16145         /* cannot remove if there's no link */
16146         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16147                 return -EINVAL;
16148
16149         switch (wdev->iftype) {
16150         case NL80211_IFTYPE_AP:
16151                 break;
16152         default:
16153                 return -EINVAL;
16154         }
16155
16156         wdev_lock(wdev);
16157         cfg80211_remove_link(wdev, link_id);
16158         wdev_unlock(wdev);
16159
16160         return 0;
16161 }
16162
16163 static int
16164 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16165                              bool add)
16166 {
16167         struct link_station_parameters params = {};
16168         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16169         struct net_device *dev = info->user_ptr[1];
16170         int err;
16171
16172         if ((add && !rdev->ops->add_link_station) ||
16173             (!add && !rdev->ops->mod_link_station))
16174                 return -EOPNOTSUPP;
16175
16176         if (add && !info->attrs[NL80211_ATTR_MAC])
16177                 return -EINVAL;
16178
16179         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16180                 return -EINVAL;
16181
16182         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16183                 return -EINVAL;
16184
16185         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16186
16187         if (info->attrs[NL80211_ATTR_MAC]) {
16188                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16189                 if (!is_valid_ether_addr(params.link_mac))
16190                         return -EINVAL;
16191         }
16192
16193         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16194                 return -EINVAL;
16195
16196         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16197
16198         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16199                 params.supported_rates =
16200                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16201                 params.supported_rates_len =
16202                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16203         }
16204
16205         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16206                 params.ht_capa =
16207                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16208
16209         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16210                 params.vht_capa =
16211                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16212
16213         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16214                 params.he_capa =
16215                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16216                 params.he_capa_len =
16217                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16218
16219                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16220                         params.eht_capa =
16221                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16222                         params.eht_capa_len =
16223                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16224
16225                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16226                                                         (const u8 *)params.eht_capa,
16227                                                         params.eht_capa_len,
16228                                                         false))
16229                                 return -EINVAL;
16230                 }
16231         }
16232
16233         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16234                 params.he_6ghz_capa =
16235                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16236
16237         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16238                 params.opmode_notif_used = true;
16239                 params.opmode_notif =
16240                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16241         }
16242
16243         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16244                                                 &params.txpwr_set);
16245         if (err)
16246                 return err;
16247
16248         wdev_lock(dev->ieee80211_ptr);
16249         if (add)
16250                 err = rdev_add_link_station(rdev, dev, &params);
16251         else
16252                 err = rdev_mod_link_station(rdev, dev, &params);
16253         wdev_unlock(dev->ieee80211_ptr);
16254
16255         return err;
16256 }
16257
16258 static int
16259 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16260 {
16261         return nl80211_add_mod_link_station(skb, info, true);
16262 }
16263
16264 static int
16265 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16266 {
16267         return nl80211_add_mod_link_station(skb, info, false);
16268 }
16269
16270 static int
16271 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16272 {
16273         struct link_station_del_parameters params = {};
16274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16275         struct net_device *dev = info->user_ptr[1];
16276         int ret;
16277
16278         if (!rdev->ops->del_link_station)
16279                 return -EOPNOTSUPP;
16280
16281         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16282             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16283                 return -EINVAL;
16284
16285         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16286         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16287
16288         wdev_lock(dev->ieee80211_ptr);
16289         ret = rdev_del_link_station(rdev, dev, &params);
16290         wdev_unlock(dev->ieee80211_ptr);
16291
16292         return ret;
16293 }
16294
16295 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16296                                     struct genl_info *info)
16297 {
16298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16299         struct net_device *dev = info->user_ptr[1];
16300         struct cfg80211_set_hw_timestamp hwts = {};
16301
16302         if (!rdev->wiphy.hw_timestamp_max_peers)
16303                 return -EOPNOTSUPP;
16304
16305         if (!info->attrs[NL80211_ATTR_MAC] &&
16306             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16307                 return -EOPNOTSUPP;
16308
16309         if (info->attrs[NL80211_ATTR_MAC])
16310                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16311
16312         hwts.enable =
16313                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16314
16315         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16316 }
16317
16318 #define NL80211_FLAG_NEED_WIPHY         0x01
16319 #define NL80211_FLAG_NEED_NETDEV        0x02
16320 #define NL80211_FLAG_NEED_RTNL          0x04
16321 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16322 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16323                                          NL80211_FLAG_CHECK_NETDEV_UP)
16324 #define NL80211_FLAG_NEED_WDEV          0x10
16325 /* If a netdev is associated, it must be UP, P2P must be started */
16326 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16327                                          NL80211_FLAG_CHECK_NETDEV_UP)
16328 #define NL80211_FLAG_CLEAR_SKB          0x20
16329 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16330 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16331 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16332
16333 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16334         SELECTOR(__sel, NONE, 0) /* must be first */    \
16335         SELECTOR(__sel, WIPHY,                          \
16336                  NL80211_FLAG_NEED_WIPHY)               \
16337         SELECTOR(__sel, WDEV,                           \
16338                  NL80211_FLAG_NEED_WDEV)                \
16339         SELECTOR(__sel, NETDEV,                         \
16340                  NL80211_FLAG_NEED_NETDEV)              \
16341         SELECTOR(__sel, NETDEV_LINK,                    \
16342                  NL80211_FLAG_NEED_NETDEV |             \
16343                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16344         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16345                  NL80211_FLAG_NEED_NETDEV |             \
16346                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16347         SELECTOR(__sel, WIPHY_RTNL,                     \
16348                  NL80211_FLAG_NEED_WIPHY |              \
16349                  NL80211_FLAG_NEED_RTNL)                \
16350         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16351                  NL80211_FLAG_NEED_WIPHY |              \
16352                  NL80211_FLAG_NEED_RTNL |               \
16353                  NL80211_FLAG_NO_WIPHY_MTX)             \
16354         SELECTOR(__sel, WDEV_RTNL,                      \
16355                  NL80211_FLAG_NEED_WDEV |               \
16356                  NL80211_FLAG_NEED_RTNL)                \
16357         SELECTOR(__sel, NETDEV_RTNL,                    \
16358                  NL80211_FLAG_NEED_NETDEV |             \
16359                  NL80211_FLAG_NEED_RTNL)                \
16360         SELECTOR(__sel, NETDEV_UP,                      \
16361                  NL80211_FLAG_NEED_NETDEV_UP)           \
16362         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16363                  NL80211_FLAG_NEED_NETDEV_UP |          \
16364                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16365         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16366                  NL80211_FLAG_NEED_NETDEV_UP |          \
16367                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16368         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16369                  NL80211_FLAG_NEED_NETDEV_UP |          \
16370                  NL80211_FLAG_CLEAR_SKB |               \
16371                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16372         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16373                  NL80211_FLAG_NEED_NETDEV_UP |          \
16374                  NL80211_FLAG_NO_WIPHY_MTX)             \
16375         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16376                  NL80211_FLAG_NEED_NETDEV_UP |          \
16377                  NL80211_FLAG_NO_WIPHY_MTX |            \
16378                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16379         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16380                  NL80211_FLAG_NEED_NETDEV_UP |          \
16381                  NL80211_FLAG_CLEAR_SKB)                \
16382         SELECTOR(__sel, WDEV_UP,                        \
16383                  NL80211_FLAG_NEED_WDEV_UP)             \
16384         SELECTOR(__sel, WDEV_UP_LINK,                   \
16385                  NL80211_FLAG_NEED_WDEV_UP |            \
16386                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16387         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16388                  NL80211_FLAG_NEED_WDEV_UP |            \
16389                  NL80211_FLAG_NEED_RTNL)                \
16390         SELECTOR(__sel, WIPHY_CLEAR,                    \
16391                  NL80211_FLAG_NEED_WIPHY |              \
16392                  NL80211_FLAG_CLEAR_SKB)
16393
16394 enum nl80211_internal_flags_selector {
16395 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16396         INTERNAL_FLAG_SELECTORS(_)
16397 #undef SELECTOR
16398 };
16399
16400 static u32 nl80211_internal_flags[] = {
16401 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16402         INTERNAL_FLAG_SELECTORS(_)
16403 #undef SELECTOR
16404 };
16405
16406 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16407                             struct sk_buff *skb,
16408                             struct genl_info *info)
16409 {
16410         struct cfg80211_registered_device *rdev = NULL;
16411         struct wireless_dev *wdev = NULL;
16412         struct net_device *dev = NULL;
16413         u32 internal_flags;
16414         int err;
16415
16416         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16417                 return -EINVAL;
16418
16419         internal_flags = nl80211_internal_flags[ops->internal_flags];
16420
16421         rtnl_lock();
16422         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16423                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16424                 if (IS_ERR(rdev)) {
16425                         err = PTR_ERR(rdev);
16426                         goto out_unlock;
16427                 }
16428                 info->user_ptr[0] = rdev;
16429         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16430                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16431                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16432                                                   info->attrs);
16433                 if (IS_ERR(wdev)) {
16434                         err = PTR_ERR(wdev);
16435                         goto out_unlock;
16436                 }
16437
16438                 dev = wdev->netdev;
16439                 dev_hold(dev);
16440                 rdev = wiphy_to_rdev(wdev->wiphy);
16441
16442                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16443                         if (!dev) {
16444                                 err = -EINVAL;
16445                                 goto out_unlock;
16446                         }
16447
16448                         info->user_ptr[1] = dev;
16449                 } else {
16450                         info->user_ptr[1] = wdev;
16451                 }
16452
16453                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16454                     !wdev_running(wdev)) {
16455                         err = -ENETDOWN;
16456                         goto out_unlock;
16457                 }
16458
16459                 info->user_ptr[0] = rdev;
16460         }
16461
16462         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16463                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16464
16465                 if (!wdev) {
16466                         err = -EINVAL;
16467                         goto out_unlock;
16468                 }
16469
16470                 /* MLO -> require valid link ID */
16471                 if (wdev->valid_links &&
16472                     (!link_id ||
16473                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16474                         err = -EINVAL;
16475                         goto out_unlock;
16476                 }
16477
16478                 /* non-MLO -> no link ID attribute accepted */
16479                 if (!wdev->valid_links && link_id) {
16480                         err = -EINVAL;
16481                         goto out_unlock;
16482                 }
16483         }
16484
16485         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16486                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16487                     (wdev && wdev->valid_links)) {
16488                         err = -EINVAL;
16489                         goto out_unlock;
16490                 }
16491         }
16492
16493         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16494                 wiphy_lock(&rdev->wiphy);
16495                 /* we keep the mutex locked until post_doit */
16496                 __release(&rdev->wiphy.mtx);
16497         }
16498         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16499                 rtnl_unlock();
16500
16501         return 0;
16502 out_unlock:
16503         rtnl_unlock();
16504         dev_put(dev);
16505         return err;
16506 }
16507
16508 static void nl80211_post_doit(const struct genl_split_ops *ops,
16509                               struct sk_buff *skb,
16510                               struct genl_info *info)
16511 {
16512         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16513
16514         if (info->user_ptr[1]) {
16515                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16516                         struct wireless_dev *wdev = info->user_ptr[1];
16517
16518                         dev_put(wdev->netdev);
16519                 } else {
16520                         dev_put(info->user_ptr[1]);
16521                 }
16522         }
16523
16524         if (info->user_ptr[0] &&
16525             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16526                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16527
16528                 /* we kept the mutex locked since pre_doit */
16529                 __acquire(&rdev->wiphy.mtx);
16530                 wiphy_unlock(&rdev->wiphy);
16531         }
16532
16533         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16534                 rtnl_unlock();
16535
16536         /* If needed, clear the netlink message payload from the SKB
16537          * as it might contain key data that shouldn't stick around on
16538          * the heap after the SKB is freed. The netlink message header
16539          * is still needed for further processing, so leave it intact.
16540          */
16541         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16542                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16543
16544                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16545         }
16546 }
16547
16548 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16549                                      struct cfg80211_sar_specs *sar_specs,
16550                                      struct nlattr *spec[], int index)
16551 {
16552         u32 range_index, i;
16553
16554         if (!sar_specs || !spec)
16555                 return -EINVAL;
16556
16557         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16558             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16559                 return -EINVAL;
16560
16561         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16562
16563         /* check if range_index exceeds num_freq_ranges */
16564         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16565                 return -EINVAL;
16566
16567         /* check if range_index duplicates */
16568         for (i = 0; i < index; i++) {
16569                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16570                         return -EINVAL;
16571         }
16572
16573         sar_specs->sub_specs[index].power =
16574                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16575
16576         sar_specs->sub_specs[index].freq_range_index = range_index;
16577
16578         return 0;
16579 }
16580
16581 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16582 {
16583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16584         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16585         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16586         struct cfg80211_sar_specs *sar_spec;
16587         enum nl80211_sar_type type;
16588         struct nlattr *spec_list;
16589         u32 specs;
16590         int rem, err;
16591
16592         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16593                 return -EOPNOTSUPP;
16594
16595         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16596                 return -EINVAL;
16597
16598         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16599                          info->attrs[NL80211_ATTR_SAR_SPEC],
16600                          NULL, NULL);
16601
16602         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16603                 return -EINVAL;
16604
16605         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16606         if (type != rdev->wiphy.sar_capa->type)
16607                 return -EINVAL;
16608
16609         specs = 0;
16610         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16611                 specs++;
16612
16613         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16614                 return -EINVAL;
16615
16616         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16617         if (!sar_spec)
16618                 return -ENOMEM;
16619
16620         sar_spec->type = type;
16621         specs = 0;
16622         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16623                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16624                                  spec_list, NULL, NULL);
16625
16626                 switch (type) {
16627                 case NL80211_SAR_TYPE_POWER:
16628                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16629                                                       spec, specs)) {
16630                                 err = -EINVAL;
16631                                 goto error;
16632                         }
16633                         break;
16634                 default:
16635                         err = -EINVAL;
16636                         goto error;
16637                 }
16638                 specs++;
16639         }
16640
16641         sar_spec->num_sub_specs = specs;
16642
16643         rdev->cur_cmd_info = info;
16644         err = rdev_set_sar_specs(rdev, sar_spec);
16645         rdev->cur_cmd_info = NULL;
16646 error:
16647         kfree(sar_spec);
16648         return err;
16649 }
16650
16651 #define SELECTOR(__sel, name, value) \
16652         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16653 int __missing_selector(void);
16654 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16655
16656 static const struct genl_ops nl80211_ops[] = {
16657         {
16658                 .cmd = NL80211_CMD_GET_WIPHY,
16659                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16660                 .doit = nl80211_get_wiphy,
16661                 .dumpit = nl80211_dump_wiphy,
16662                 .done = nl80211_dump_wiphy_done,
16663                 /* can be retrieved by unprivileged users */
16664                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16665         },
16666 };
16667
16668 static const struct genl_small_ops nl80211_small_ops[] = {
16669         {
16670                 .cmd = NL80211_CMD_SET_WIPHY,
16671                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16672                 .doit = nl80211_set_wiphy,
16673                 .flags = GENL_UNS_ADMIN_PERM,
16674         },
16675         {
16676                 .cmd = NL80211_CMD_GET_INTERFACE,
16677                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16678                 .doit = nl80211_get_interface,
16679                 .dumpit = nl80211_dump_interface,
16680                 /* can be retrieved by unprivileged users */
16681                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16682         },
16683         {
16684                 .cmd = NL80211_CMD_SET_INTERFACE,
16685                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16686                 .doit = nl80211_set_interface,
16687                 .flags = GENL_UNS_ADMIN_PERM,
16688                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16689                                          NL80211_FLAG_NEED_RTNL),
16690         },
16691         {
16692                 .cmd = NL80211_CMD_NEW_INTERFACE,
16693                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16694                 .doit = nl80211_new_interface,
16695                 .flags = GENL_UNS_ADMIN_PERM,
16696                 .internal_flags =
16697                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16698                                NL80211_FLAG_NEED_RTNL |
16699                                /* we take the wiphy mutex later ourselves */
16700                                NL80211_FLAG_NO_WIPHY_MTX),
16701         },
16702         {
16703                 .cmd = NL80211_CMD_DEL_INTERFACE,
16704                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16705                 .doit = nl80211_del_interface,
16706                 .flags = GENL_UNS_ADMIN_PERM,
16707                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16708                                          NL80211_FLAG_NEED_RTNL),
16709         },
16710         {
16711                 .cmd = NL80211_CMD_GET_KEY,
16712                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16713                 .doit = nl80211_get_key,
16714                 .flags = GENL_UNS_ADMIN_PERM,
16715                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16716         },
16717         {
16718                 .cmd = NL80211_CMD_SET_KEY,
16719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16720                 .doit = nl80211_set_key,
16721                 .flags = GENL_UNS_ADMIN_PERM,
16722                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16723                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16724                                          NL80211_FLAG_CLEAR_SKB),
16725         },
16726         {
16727                 .cmd = NL80211_CMD_NEW_KEY,
16728                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16729                 .doit = nl80211_new_key,
16730                 .flags = GENL_UNS_ADMIN_PERM,
16731                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16732                                          NL80211_FLAG_CLEAR_SKB),
16733         },
16734         {
16735                 .cmd = NL80211_CMD_DEL_KEY,
16736                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16737                 .doit = nl80211_del_key,
16738                 .flags = GENL_UNS_ADMIN_PERM,
16739                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16740         },
16741         {
16742                 .cmd = NL80211_CMD_SET_BEACON,
16743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16744                 .flags = GENL_UNS_ADMIN_PERM,
16745                 .doit = nl80211_set_beacon,
16746                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16747                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16748         },
16749         {
16750                 .cmd = NL80211_CMD_START_AP,
16751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16752                 .flags = GENL_UNS_ADMIN_PERM,
16753                 .doit = nl80211_start_ap,
16754                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16755                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16756         },
16757         {
16758                 .cmd = NL80211_CMD_STOP_AP,
16759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16760                 .flags = GENL_UNS_ADMIN_PERM,
16761                 .doit = nl80211_stop_ap,
16762                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16763                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16764         },
16765         {
16766                 .cmd = NL80211_CMD_GET_STATION,
16767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16768                 .doit = nl80211_get_station,
16769                 .dumpit = nl80211_dump_station,
16770                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16771         },
16772         {
16773                 .cmd = NL80211_CMD_SET_STATION,
16774                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16775                 .doit = nl80211_set_station,
16776                 .flags = GENL_UNS_ADMIN_PERM,
16777                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16778         },
16779         {
16780                 .cmd = NL80211_CMD_NEW_STATION,
16781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16782                 .doit = nl80211_new_station,
16783                 .flags = GENL_UNS_ADMIN_PERM,
16784                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16785         },
16786         {
16787                 .cmd = NL80211_CMD_DEL_STATION,
16788                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16789                 .doit = nl80211_del_station,
16790                 .flags = GENL_UNS_ADMIN_PERM,
16791                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16792         },
16793         {
16794                 .cmd = NL80211_CMD_GET_MPATH,
16795                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16796                 .doit = nl80211_get_mpath,
16797                 .dumpit = nl80211_dump_mpath,
16798                 .flags = GENL_UNS_ADMIN_PERM,
16799                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16800         },
16801         {
16802                 .cmd = NL80211_CMD_GET_MPP,
16803                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16804                 .doit = nl80211_get_mpp,
16805                 .dumpit = nl80211_dump_mpp,
16806                 .flags = GENL_UNS_ADMIN_PERM,
16807                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16808         },
16809         {
16810                 .cmd = NL80211_CMD_SET_MPATH,
16811                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16812                 .doit = nl80211_set_mpath,
16813                 .flags = GENL_UNS_ADMIN_PERM,
16814                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16815         },
16816         {
16817                 .cmd = NL80211_CMD_NEW_MPATH,
16818                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16819                 .doit = nl80211_new_mpath,
16820                 .flags = GENL_UNS_ADMIN_PERM,
16821                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16822         },
16823         {
16824                 .cmd = NL80211_CMD_DEL_MPATH,
16825                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16826                 .doit = nl80211_del_mpath,
16827                 .flags = GENL_UNS_ADMIN_PERM,
16828                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16829         },
16830         {
16831                 .cmd = NL80211_CMD_SET_BSS,
16832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16833                 .doit = nl80211_set_bss,
16834                 .flags = GENL_UNS_ADMIN_PERM,
16835                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16836                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16837         },
16838         {
16839                 .cmd = NL80211_CMD_GET_REG,
16840                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16841                 .doit = nl80211_get_reg_do,
16842                 .dumpit = nl80211_get_reg_dump,
16843                 /* can be retrieved by unprivileged users */
16844         },
16845 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16846         {
16847                 .cmd = NL80211_CMD_SET_REG,
16848                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16849                 .doit = nl80211_set_reg,
16850                 .flags = GENL_ADMIN_PERM,
16851         },
16852 #endif
16853         {
16854                 .cmd = NL80211_CMD_REQ_SET_REG,
16855                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16856                 .doit = nl80211_req_set_reg,
16857                 .flags = GENL_ADMIN_PERM,
16858         },
16859         {
16860                 .cmd = NL80211_CMD_RELOAD_REGDB,
16861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16862                 .doit = nl80211_reload_regdb,
16863                 .flags = GENL_ADMIN_PERM,
16864         },
16865         {
16866                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16867                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16868                 .doit = nl80211_get_mesh_config,
16869                 /* can be retrieved by unprivileged users */
16870                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16871         },
16872         {
16873                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16875                 .doit = nl80211_update_mesh_config,
16876                 .flags = GENL_UNS_ADMIN_PERM,
16877                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16878         },
16879         {
16880                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16881                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16882                 .doit = nl80211_trigger_scan,
16883                 .flags = GENL_UNS_ADMIN_PERM,
16884                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16885         },
16886         {
16887                 .cmd = NL80211_CMD_ABORT_SCAN,
16888                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16889                 .doit = nl80211_abort_scan,
16890                 .flags = GENL_UNS_ADMIN_PERM,
16891                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16892         },
16893         {
16894                 .cmd = NL80211_CMD_GET_SCAN,
16895                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16896                 .dumpit = nl80211_dump_scan,
16897         },
16898         {
16899                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16900                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901                 .doit = nl80211_start_sched_scan,
16902                 .flags = GENL_UNS_ADMIN_PERM,
16903                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16904         },
16905         {
16906                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908                 .doit = nl80211_stop_sched_scan,
16909                 .flags = GENL_UNS_ADMIN_PERM,
16910                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16911         },
16912         {
16913                 .cmd = NL80211_CMD_AUTHENTICATE,
16914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915                 .doit = nl80211_authenticate,
16916                 .flags = GENL_UNS_ADMIN_PERM,
16917                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16918                                          NL80211_FLAG_CLEAR_SKB),
16919         },
16920         {
16921                 .cmd = NL80211_CMD_ASSOCIATE,
16922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16923                 .doit = nl80211_associate,
16924                 .flags = GENL_UNS_ADMIN_PERM,
16925                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16926                                          NL80211_FLAG_CLEAR_SKB),
16927         },
16928         {
16929                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16930                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16931                 .doit = nl80211_deauthenticate,
16932                 .flags = GENL_UNS_ADMIN_PERM,
16933                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16934         },
16935         {
16936                 .cmd = NL80211_CMD_DISASSOCIATE,
16937                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16938                 .doit = nl80211_disassociate,
16939                 .flags = GENL_UNS_ADMIN_PERM,
16940                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16941         },
16942         {
16943                 .cmd = NL80211_CMD_JOIN_IBSS,
16944                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16945                 .doit = nl80211_join_ibss,
16946                 .flags = GENL_UNS_ADMIN_PERM,
16947                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16948         },
16949         {
16950                 .cmd = NL80211_CMD_LEAVE_IBSS,
16951                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16952                 .doit = nl80211_leave_ibss,
16953                 .flags = GENL_UNS_ADMIN_PERM,
16954                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16955         },
16956 #ifdef CONFIG_NL80211_TESTMODE
16957         {
16958                 .cmd = NL80211_CMD_TESTMODE,
16959                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16960                 .doit = nl80211_testmode_do,
16961                 .dumpit = nl80211_testmode_dump,
16962                 .flags = GENL_UNS_ADMIN_PERM,
16963                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16964         },
16965 #endif
16966         {
16967                 .cmd = NL80211_CMD_CONNECT,
16968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16969                 .doit = nl80211_connect,
16970                 .flags = GENL_UNS_ADMIN_PERM,
16971                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16972                                          NL80211_FLAG_CLEAR_SKB),
16973         },
16974         {
16975                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16977                 .doit = nl80211_update_connect_params,
16978                 .flags = GENL_ADMIN_PERM,
16979                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16980                                          NL80211_FLAG_CLEAR_SKB),
16981         },
16982         {
16983                 .cmd = NL80211_CMD_DISCONNECT,
16984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16985                 .doit = nl80211_disconnect,
16986                 .flags = GENL_UNS_ADMIN_PERM,
16987                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16988         },
16989         {
16990                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16992                 .doit = nl80211_wiphy_netns,
16993                 .flags = GENL_UNS_ADMIN_PERM,
16994                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16995                                          NL80211_FLAG_NEED_RTNL |
16996                                          NL80211_FLAG_NO_WIPHY_MTX),
16997         },
16998         {
16999                 .cmd = NL80211_CMD_GET_SURVEY,
17000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17001                 .dumpit = nl80211_dump_survey,
17002         },
17003         {
17004                 .cmd = NL80211_CMD_SET_PMKSA,
17005                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17006                 .doit = nl80211_setdel_pmksa,
17007                 .flags = GENL_UNS_ADMIN_PERM,
17008                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17009                                          NL80211_FLAG_CLEAR_SKB),
17010         },
17011         {
17012                 .cmd = NL80211_CMD_DEL_PMKSA,
17013                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17014                 .doit = nl80211_setdel_pmksa,
17015                 .flags = GENL_UNS_ADMIN_PERM,
17016                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17017         },
17018         {
17019                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17020                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17021                 .doit = nl80211_flush_pmksa,
17022                 .flags = GENL_UNS_ADMIN_PERM,
17023                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17024         },
17025         {
17026                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17027                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17028                 .doit = nl80211_remain_on_channel,
17029                 .flags = GENL_UNS_ADMIN_PERM,
17030                 /* FIXME: requiring a link ID here is probably not good */
17031                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17032                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17033         },
17034         {
17035                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17036                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17037                 .doit = nl80211_cancel_remain_on_channel,
17038                 .flags = GENL_UNS_ADMIN_PERM,
17039                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17040         },
17041         {
17042                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17043                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17044                 .doit = nl80211_set_tx_bitrate_mask,
17045                 .flags = GENL_UNS_ADMIN_PERM,
17046                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17047                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17048         },
17049         {
17050                 .cmd = NL80211_CMD_REGISTER_FRAME,
17051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17052                 .doit = nl80211_register_mgmt,
17053                 .flags = GENL_UNS_ADMIN_PERM,
17054                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17055         },
17056         {
17057                 .cmd = NL80211_CMD_FRAME,
17058                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17059                 .doit = nl80211_tx_mgmt,
17060                 .flags = GENL_UNS_ADMIN_PERM,
17061                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17062         },
17063         {
17064                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17065                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17066                 .doit = nl80211_tx_mgmt_cancel_wait,
17067                 .flags = GENL_UNS_ADMIN_PERM,
17068                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17069         },
17070         {
17071                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17073                 .doit = nl80211_set_power_save,
17074                 .flags = GENL_UNS_ADMIN_PERM,
17075                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17076         },
17077         {
17078                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17079                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17080                 .doit = nl80211_get_power_save,
17081                 /* can be retrieved by unprivileged users */
17082                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17083         },
17084         {
17085                 .cmd = NL80211_CMD_SET_CQM,
17086                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17087                 .doit = nl80211_set_cqm,
17088                 .flags = GENL_UNS_ADMIN_PERM,
17089                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17090         },
17091         {
17092                 .cmd = NL80211_CMD_SET_CHANNEL,
17093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17094                 .doit = nl80211_set_channel,
17095                 .flags = GENL_UNS_ADMIN_PERM,
17096                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17097                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17098         },
17099         {
17100                 .cmd = NL80211_CMD_JOIN_MESH,
17101                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17102                 .doit = nl80211_join_mesh,
17103                 .flags = GENL_UNS_ADMIN_PERM,
17104                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17105         },
17106         {
17107                 .cmd = NL80211_CMD_LEAVE_MESH,
17108                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17109                 .doit = nl80211_leave_mesh,
17110                 .flags = GENL_UNS_ADMIN_PERM,
17111                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17112         },
17113         {
17114                 .cmd = NL80211_CMD_JOIN_OCB,
17115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17116                 .doit = nl80211_join_ocb,
17117                 .flags = GENL_UNS_ADMIN_PERM,
17118                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17119         },
17120         {
17121                 .cmd = NL80211_CMD_LEAVE_OCB,
17122                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17123                 .doit = nl80211_leave_ocb,
17124                 .flags = GENL_UNS_ADMIN_PERM,
17125                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17126         },
17127 #ifdef CONFIG_PM
17128         {
17129                 .cmd = NL80211_CMD_GET_WOWLAN,
17130                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17131                 .doit = nl80211_get_wowlan,
17132                 /* can be retrieved by unprivileged users */
17133                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17134         },
17135         {
17136                 .cmd = NL80211_CMD_SET_WOWLAN,
17137                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17138                 .doit = nl80211_set_wowlan,
17139                 .flags = GENL_UNS_ADMIN_PERM,
17140                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17141         },
17142 #endif
17143         {
17144                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17145                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17146                 .doit = nl80211_set_rekey_data,
17147                 .flags = GENL_UNS_ADMIN_PERM,
17148                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17149                                          NL80211_FLAG_CLEAR_SKB),
17150         },
17151         {
17152                 .cmd = NL80211_CMD_TDLS_MGMT,
17153                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17154                 .doit = nl80211_tdls_mgmt,
17155                 .flags = GENL_UNS_ADMIN_PERM,
17156                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17157                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17158         },
17159         {
17160                 .cmd = NL80211_CMD_TDLS_OPER,
17161                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17162                 .doit = nl80211_tdls_oper,
17163                 .flags = GENL_UNS_ADMIN_PERM,
17164                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17165         },
17166         {
17167                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17168                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17169                 .doit = nl80211_register_unexpected_frame,
17170                 .flags = GENL_UNS_ADMIN_PERM,
17171                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17172         },
17173         {
17174                 .cmd = NL80211_CMD_PROBE_CLIENT,
17175                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17176                 .doit = nl80211_probe_client,
17177                 .flags = GENL_UNS_ADMIN_PERM,
17178                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17179         },
17180         {
17181                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17183                 .doit = nl80211_register_beacons,
17184                 .flags = GENL_UNS_ADMIN_PERM,
17185                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17186         },
17187         {
17188                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17190                 .doit = nl80211_set_noack_map,
17191                 .flags = GENL_UNS_ADMIN_PERM,
17192                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17193         },
17194         {
17195                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17196                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17197                 .doit = nl80211_start_p2p_device,
17198                 .flags = GENL_UNS_ADMIN_PERM,
17199                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17200                                          NL80211_FLAG_NEED_RTNL),
17201         },
17202         {
17203                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17204                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17205                 .doit = nl80211_stop_p2p_device,
17206                 .flags = GENL_UNS_ADMIN_PERM,
17207                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17208                                          NL80211_FLAG_NEED_RTNL),
17209         },
17210         {
17211                 .cmd = NL80211_CMD_START_NAN,
17212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17213                 .doit = nl80211_start_nan,
17214                 .flags = GENL_ADMIN_PERM,
17215                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17216                                          NL80211_FLAG_NEED_RTNL),
17217         },
17218         {
17219                 .cmd = NL80211_CMD_STOP_NAN,
17220                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17221                 .doit = nl80211_stop_nan,
17222                 .flags = GENL_ADMIN_PERM,
17223                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17224                                          NL80211_FLAG_NEED_RTNL),
17225         },
17226         {
17227                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17228                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17229                 .doit = nl80211_nan_add_func,
17230                 .flags = GENL_ADMIN_PERM,
17231                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17232         },
17233         {
17234                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17235                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17236                 .doit = nl80211_nan_del_func,
17237                 .flags = GENL_ADMIN_PERM,
17238                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17239         },
17240         {
17241                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17242                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17243                 .doit = nl80211_nan_change_config,
17244                 .flags = GENL_ADMIN_PERM,
17245                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17246         },
17247         {
17248                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17249                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17250                 .doit = nl80211_set_mcast_rate,
17251                 .flags = GENL_UNS_ADMIN_PERM,
17252                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17253         },
17254         {
17255                 .cmd = NL80211_CMD_SET_MAC_ACL,
17256                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17257                 .doit = nl80211_set_mac_acl,
17258                 .flags = GENL_UNS_ADMIN_PERM,
17259                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17260                                          NL80211_FLAG_MLO_UNSUPPORTED),
17261         },
17262         {
17263                 .cmd = NL80211_CMD_RADAR_DETECT,
17264                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17265                 .doit = nl80211_start_radar_detection,
17266                 .flags = GENL_UNS_ADMIN_PERM,
17267                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17268                                          NL80211_FLAG_NO_WIPHY_MTX |
17269                                          NL80211_FLAG_MLO_UNSUPPORTED),
17270         },
17271         {
17272                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17273                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17274                 .doit = nl80211_get_protocol_features,
17275         },
17276         {
17277                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17278                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17279                 .doit = nl80211_update_ft_ies,
17280                 .flags = GENL_UNS_ADMIN_PERM,
17281                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17282         },
17283         {
17284                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17285                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17286                 .doit = nl80211_crit_protocol_start,
17287                 .flags = GENL_UNS_ADMIN_PERM,
17288                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17289         },
17290         {
17291                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17293                 .doit = nl80211_crit_protocol_stop,
17294                 .flags = GENL_UNS_ADMIN_PERM,
17295                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17296         },
17297         {
17298                 .cmd = NL80211_CMD_GET_COALESCE,
17299                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17300                 .doit = nl80211_get_coalesce,
17301                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17302         },
17303         {
17304                 .cmd = NL80211_CMD_SET_COALESCE,
17305                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17306                 .doit = nl80211_set_coalesce,
17307                 .flags = GENL_UNS_ADMIN_PERM,
17308                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17309         },
17310         {
17311                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17312                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17313                 .doit = nl80211_channel_switch,
17314                 .flags = GENL_UNS_ADMIN_PERM,
17315                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17316                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17317         },
17318         {
17319                 .cmd = NL80211_CMD_VENDOR,
17320                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17321                 .doit = nl80211_vendor_cmd,
17322                 .dumpit = nl80211_vendor_cmd_dump,
17323                 .flags = GENL_UNS_ADMIN_PERM,
17324                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17325                                          NL80211_FLAG_CLEAR_SKB),
17326         },
17327         {
17328                 .cmd = NL80211_CMD_SET_QOS_MAP,
17329                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17330                 .doit = nl80211_set_qos_map,
17331                 .flags = GENL_UNS_ADMIN_PERM,
17332                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17333         },
17334         {
17335                 .cmd = NL80211_CMD_ADD_TX_TS,
17336                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17337                 .doit = nl80211_add_tx_ts,
17338                 .flags = GENL_UNS_ADMIN_PERM,
17339                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17340                                          NL80211_FLAG_MLO_UNSUPPORTED),
17341         },
17342         {
17343                 .cmd = NL80211_CMD_DEL_TX_TS,
17344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17345                 .doit = nl80211_del_tx_ts,
17346                 .flags = GENL_UNS_ADMIN_PERM,
17347                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17348         },
17349         {
17350                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17351                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17352                 .doit = nl80211_tdls_channel_switch,
17353                 .flags = GENL_UNS_ADMIN_PERM,
17354                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17355         },
17356         {
17357                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17359                 .doit = nl80211_tdls_cancel_channel_switch,
17360                 .flags = GENL_UNS_ADMIN_PERM,
17361                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17362         },
17363         {
17364                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17366                 .doit = nl80211_set_multicast_to_unicast,
17367                 .flags = GENL_UNS_ADMIN_PERM,
17368                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17369         },
17370         {
17371                 .cmd = NL80211_CMD_SET_PMK,
17372                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17373                 .doit = nl80211_set_pmk,
17374                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17375                                          NL80211_FLAG_CLEAR_SKB),
17376         },
17377         {
17378                 .cmd = NL80211_CMD_DEL_PMK,
17379                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17380                 .doit = nl80211_del_pmk,
17381                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17382         },
17383         {
17384                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17386                 .doit = nl80211_external_auth,
17387                 .flags = GENL_ADMIN_PERM,
17388                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17389         },
17390         {
17391                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17393                 .doit = nl80211_tx_control_port,
17394                 .flags = GENL_UNS_ADMIN_PERM,
17395                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17396         },
17397         {
17398                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17400                 .doit = nl80211_get_ftm_responder_stats,
17401                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17402                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17403         },
17404         {
17405                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17407                 .doit = nl80211_pmsr_start,
17408                 .flags = GENL_UNS_ADMIN_PERM,
17409                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17410         },
17411         {
17412                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17413                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17414                 .doit = nl80211_notify_radar_detection,
17415                 .flags = GENL_UNS_ADMIN_PERM,
17416                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17417         },
17418         {
17419                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17420                 .doit = nl80211_update_owe_info,
17421                 .flags = GENL_ADMIN_PERM,
17422                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17423         },
17424         {
17425                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17426                 .doit = nl80211_probe_mesh_link,
17427                 .flags = GENL_UNS_ADMIN_PERM,
17428                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17429         },
17430         {
17431                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17432                 .doit = nl80211_set_tid_config,
17433                 .flags = GENL_UNS_ADMIN_PERM,
17434                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17435                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17436         },
17437         {
17438                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17440                 .doit = nl80211_set_sar_specs,
17441                 .flags = GENL_UNS_ADMIN_PERM,
17442                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17443                                          NL80211_FLAG_NEED_RTNL),
17444         },
17445         {
17446                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17448                 .doit = nl80211_color_change,
17449                 .flags = GENL_UNS_ADMIN_PERM,
17450                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17451         },
17452         {
17453                 .cmd = NL80211_CMD_SET_FILS_AAD,
17454                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17455                 .doit = nl80211_set_fils_aad,
17456                 .flags = GENL_UNS_ADMIN_PERM,
17457                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17458         },
17459         {
17460                 .cmd = NL80211_CMD_ADD_LINK,
17461                 .doit = nl80211_add_link,
17462                 .flags = GENL_UNS_ADMIN_PERM,
17463                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17464         },
17465         {
17466                 .cmd = NL80211_CMD_REMOVE_LINK,
17467                 .doit = nl80211_remove_link,
17468                 .flags = GENL_UNS_ADMIN_PERM,
17469                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17470                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17471         },
17472         {
17473                 .cmd = NL80211_CMD_ADD_LINK_STA,
17474                 .doit = nl80211_add_link_station,
17475                 .flags = GENL_UNS_ADMIN_PERM,
17476                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17477                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17478         },
17479         {
17480                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17481                 .doit = nl80211_modify_link_station,
17482                 .flags = GENL_UNS_ADMIN_PERM,
17483                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17484                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17485         },
17486         {
17487                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17488                 .doit = nl80211_remove_link_station,
17489                 .flags = GENL_UNS_ADMIN_PERM,
17490                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17491                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17492         },
17493         {
17494                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17495                 .doit = nl80211_set_hw_timestamp,
17496                 .flags = GENL_UNS_ADMIN_PERM,
17497                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17498         },
17499 };
17500
17501 static struct genl_family nl80211_fam __ro_after_init = {
17502         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17503         .hdrsize = 0,                   /* no private header */
17504         .version = 1,                   /* no particular meaning now */
17505         .maxattr = NL80211_ATTR_MAX,
17506         .policy = nl80211_policy,
17507         .netnsok = true,
17508         .pre_doit = nl80211_pre_doit,
17509         .post_doit = nl80211_post_doit,
17510         .module = THIS_MODULE,
17511         .ops = nl80211_ops,
17512         .n_ops = ARRAY_SIZE(nl80211_ops),
17513         .small_ops = nl80211_small_ops,
17514         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17515         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17516         .mcgrps = nl80211_mcgrps,
17517         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17518         .parallel_ops = true,
17519 };
17520
17521 /* notification functions */
17522
17523 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17524                           enum nl80211_commands cmd)
17525 {
17526         struct sk_buff *msg;
17527         struct nl80211_dump_wiphy_state state = {};
17528
17529         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17530                 cmd != NL80211_CMD_DEL_WIPHY);
17531
17532         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17533         if (!msg)
17534                 return;
17535
17536         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17537                 nlmsg_free(msg);
17538                 return;
17539         }
17540
17541         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17542                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17543 }
17544
17545 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17546                                 struct wireless_dev *wdev,
17547                                 enum nl80211_commands cmd)
17548 {
17549         struct sk_buff *msg;
17550
17551         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17552         if (!msg)
17553                 return;
17554
17555         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17556                 nlmsg_free(msg);
17557                 return;
17558         }
17559
17560         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17561                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17562 }
17563
17564 static int nl80211_add_scan_req(struct sk_buff *msg,
17565                                 struct cfg80211_registered_device *rdev)
17566 {
17567         struct cfg80211_scan_request *req = rdev->scan_req;
17568         struct nlattr *nest;
17569         int i;
17570         struct cfg80211_scan_info *info;
17571
17572         if (WARN_ON(!req))
17573                 return 0;
17574
17575         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17576         if (!nest)
17577                 goto nla_put_failure;
17578         for (i = 0; i < req->n_ssids; i++) {
17579                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17580                         goto nla_put_failure;
17581         }
17582         nla_nest_end(msg, nest);
17583
17584         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17585                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17586                 if (!nest)
17587                         goto nla_put_failure;
17588                 for (i = 0; i < req->n_channels; i++) {
17589                         if (nla_put_u32(msg, i,
17590                                    ieee80211_channel_to_khz(req->channels[i])))
17591                                 goto nla_put_failure;
17592                 }
17593                 nla_nest_end(msg, nest);
17594         } else {
17595                 nest = nla_nest_start_noflag(msg,
17596                                              NL80211_ATTR_SCAN_FREQUENCIES);
17597                 if (!nest)
17598                         goto nla_put_failure;
17599                 for (i = 0; i < req->n_channels; i++) {
17600                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17601                                 goto nla_put_failure;
17602                 }
17603                 nla_nest_end(msg, nest);
17604         }
17605
17606         if (req->ie &&
17607             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17608                 goto nla_put_failure;
17609
17610         if (req->flags &&
17611             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17612                 goto nla_put_failure;
17613
17614         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17615                 &rdev->scan_req->info;
17616         if (info->scan_start_tsf &&
17617             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17618                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17619              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17620                      info->tsf_bssid)))
17621                 goto nla_put_failure;
17622
17623         return 0;
17624  nla_put_failure:
17625         return -ENOBUFS;
17626 }
17627
17628 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17629                                  struct cfg80211_registered_device *rdev,
17630                                  struct wireless_dev *wdev,
17631                                  u32 portid, u32 seq, int flags,
17632                                  u32 cmd)
17633 {
17634         void *hdr;
17635
17636         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17637         if (!hdr)
17638                 return -1;
17639
17640         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17641             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17642                                          wdev->netdev->ifindex)) ||
17643             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17644                               NL80211_ATTR_PAD))
17645                 goto nla_put_failure;
17646
17647         /* ignore errors and send incomplete event anyway */
17648         nl80211_add_scan_req(msg, rdev);
17649
17650         genlmsg_end(msg, hdr);
17651         return 0;
17652
17653  nla_put_failure:
17654         genlmsg_cancel(msg, hdr);
17655         return -EMSGSIZE;
17656 }
17657
17658 static int
17659 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17660                             struct cfg80211_sched_scan_request *req, u32 cmd)
17661 {
17662         void *hdr;
17663
17664         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17665         if (!hdr)
17666                 return -1;
17667
17668         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17669                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17670             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17671             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17672                               NL80211_ATTR_PAD))
17673                 goto nla_put_failure;
17674
17675         genlmsg_end(msg, hdr);
17676         return 0;
17677
17678  nla_put_failure:
17679         genlmsg_cancel(msg, hdr);
17680         return -EMSGSIZE;
17681 }
17682
17683 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17684                              struct wireless_dev *wdev)
17685 {
17686         struct sk_buff *msg;
17687
17688         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17689         if (!msg)
17690                 return;
17691
17692         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17693                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17694                 nlmsg_free(msg);
17695                 return;
17696         }
17697
17698         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17699                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17700 }
17701
17702 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17703                                        struct wireless_dev *wdev, bool aborted)
17704 {
17705         struct sk_buff *msg;
17706
17707         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17708         if (!msg)
17709                 return NULL;
17710
17711         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17712                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17713                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17714                 nlmsg_free(msg);
17715                 return NULL;
17716         }
17717
17718         return msg;
17719 }
17720
17721 /* send message created by nl80211_build_scan_msg() */
17722 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17723                            struct sk_buff *msg)
17724 {
17725         if (!msg)
17726                 return;
17727
17728         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17729                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17730 }
17731
17732 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17733 {
17734         struct sk_buff *msg;
17735
17736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17737         if (!msg)
17738                 return;
17739
17740         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17741                 nlmsg_free(msg);
17742                 return;
17743         }
17744
17745         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17746                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17747 }
17748
17749 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17750                                           struct regulatory_request *request)
17751 {
17752         /* Userspace can always count this one always being set */
17753         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17754                 goto nla_put_failure;
17755
17756         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17757                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17758                                NL80211_REGDOM_TYPE_WORLD))
17759                         goto nla_put_failure;
17760         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17761                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17762                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17763                         goto nla_put_failure;
17764         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17765                    request->intersect) {
17766                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17767                                NL80211_REGDOM_TYPE_INTERSECTION))
17768                         goto nla_put_failure;
17769         } else {
17770                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17771                                NL80211_REGDOM_TYPE_COUNTRY) ||
17772                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17773                                    request->alpha2))
17774                         goto nla_put_failure;
17775         }
17776
17777         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17778                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17779
17780                 if (wiphy &&
17781                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17782                         goto nla_put_failure;
17783
17784                 if (wiphy &&
17785                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17786                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17787                         goto nla_put_failure;
17788         }
17789
17790         return true;
17791
17792 nla_put_failure:
17793         return false;
17794 }
17795
17796 /*
17797  * This can happen on global regulatory changes or device specific settings
17798  * based on custom regulatory domains.
17799  */
17800 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17801                                      struct regulatory_request *request)
17802 {
17803         struct sk_buff *msg;
17804         void *hdr;
17805
17806         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17807         if (!msg)
17808                 return;
17809
17810         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17811         if (!hdr)
17812                 goto nla_put_failure;
17813
17814         if (!nl80211_reg_change_event_fill(msg, request))
17815                 goto nla_put_failure;
17816
17817         genlmsg_end(msg, hdr);
17818
17819         rcu_read_lock();
17820         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17821                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17822         rcu_read_unlock();
17823
17824         return;
17825
17826 nla_put_failure:
17827         nlmsg_free(msg);
17828 }
17829
17830 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17831                                     struct net_device *netdev,
17832                                     const u8 *buf, size_t len,
17833                                     enum nl80211_commands cmd, gfp_t gfp,
17834                                     int uapsd_queues, const u8 *req_ies,
17835                                     size_t req_ies_len, bool reconnect)
17836 {
17837         struct sk_buff *msg;
17838         void *hdr;
17839
17840         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17841         if (!msg)
17842                 return;
17843
17844         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17845         if (!hdr) {
17846                 nlmsg_free(msg);
17847                 return;
17848         }
17849
17850         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17851             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17852             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17853             (req_ies &&
17854              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17855                 goto nla_put_failure;
17856
17857         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17858                 goto nla_put_failure;
17859
17860         if (uapsd_queues >= 0) {
17861                 struct nlattr *nla_wmm =
17862                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17863                 if (!nla_wmm)
17864                         goto nla_put_failure;
17865
17866                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17867                                uapsd_queues))
17868                         goto nla_put_failure;
17869
17870                 nla_nest_end(msg, nla_wmm);
17871         }
17872
17873         genlmsg_end(msg, hdr);
17874
17875         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17876                                 NL80211_MCGRP_MLME, gfp);
17877         return;
17878
17879  nla_put_failure:
17880         nlmsg_free(msg);
17881 }
17882
17883 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17884                           struct net_device *netdev, const u8 *buf,
17885                           size_t len, gfp_t gfp)
17886 {
17887         nl80211_send_mlme_event(rdev, netdev, buf, len,
17888                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17889                                 false);
17890 }
17891
17892 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17893                            struct net_device *netdev,
17894                            struct cfg80211_rx_assoc_resp *data)
17895 {
17896         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17897                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17898                                 data->uapsd_queues,
17899                                 data->req_ies, data->req_ies_len, false);
17900 }
17901
17902 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17903                          struct net_device *netdev, const u8 *buf,
17904                          size_t len, bool reconnect, gfp_t gfp)
17905 {
17906         nl80211_send_mlme_event(rdev, netdev, buf, len,
17907                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17908                                 reconnect);
17909 }
17910
17911 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17912                            struct net_device *netdev, const u8 *buf,
17913                            size_t len, bool reconnect, gfp_t gfp)
17914 {
17915         nl80211_send_mlme_event(rdev, netdev, buf, len,
17916                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17917                                 reconnect);
17918 }
17919
17920 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17921                                   size_t len)
17922 {
17923         struct wireless_dev *wdev = dev->ieee80211_ptr;
17924         struct wiphy *wiphy = wdev->wiphy;
17925         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17926         const struct ieee80211_mgmt *mgmt = (void *)buf;
17927         u32 cmd;
17928
17929         if (WARN_ON(len < 2))
17930                 return;
17931
17932         if (ieee80211_is_deauth(mgmt->frame_control)) {
17933                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17934         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17935                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17936         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17937                 if (wdev->unprot_beacon_reported &&
17938                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17939                         return;
17940                 cmd = NL80211_CMD_UNPROT_BEACON;
17941                 wdev->unprot_beacon_reported = jiffies;
17942         } else {
17943                 return;
17944         }
17945
17946         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17947         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17948                                 NULL, 0, false);
17949 }
17950 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17951
17952 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17953                                       struct net_device *netdev, int cmd,
17954                                       const u8 *addr, gfp_t gfp)
17955 {
17956         struct sk_buff *msg;
17957         void *hdr;
17958
17959         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17960         if (!msg)
17961                 return;
17962
17963         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17964         if (!hdr) {
17965                 nlmsg_free(msg);
17966                 return;
17967         }
17968
17969         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17970             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17971             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17972             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17973                 goto nla_put_failure;
17974
17975         genlmsg_end(msg, hdr);
17976
17977         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17978                                 NL80211_MCGRP_MLME, gfp);
17979         return;
17980
17981  nla_put_failure:
17982         nlmsg_free(msg);
17983 }
17984
17985 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17986                                struct net_device *netdev, const u8 *addr,
17987                                gfp_t gfp)
17988 {
17989         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17990                                   addr, gfp);
17991 }
17992
17993 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17994                                 struct net_device *netdev, const u8 *addr,
17995                                 gfp_t gfp)
17996 {
17997         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17998                                   addr, gfp);
17999 }
18000
18001 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18002                                  struct net_device *netdev,
18003                                  struct cfg80211_connect_resp_params *cr,
18004                                  gfp_t gfp)
18005 {
18006         struct sk_buff *msg;
18007         void *hdr;
18008         unsigned int link;
18009         size_t link_info_size = 0;
18010         const u8 *connected_addr = cr->valid_links ?
18011                                    cr->ap_mld_addr : cr->links[0].bssid;
18012
18013         if (cr->valid_links) {
18014                 for_each_valid_link(cr, link) {
18015                         /* Nested attribute header */
18016                         link_info_size += NLA_HDRLEN;
18017                         /* Link ID */
18018                         link_info_size += nla_total_size(sizeof(u8));
18019                         link_info_size += cr->links[link].addr ?
18020                                           nla_total_size(ETH_ALEN) : 0;
18021                         link_info_size += (cr->links[link].bssid ||
18022                                            cr->links[link].bss) ?
18023                                           nla_total_size(ETH_ALEN) : 0;
18024                         link_info_size += nla_total_size(sizeof(u16));
18025                 }
18026         }
18027
18028         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18029                         cr->fils.kek_len + cr->fils.pmk_len +
18030                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18031                         gfp);
18032         if (!msg)
18033                 return;
18034
18035         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18036         if (!hdr) {
18037                 nlmsg_free(msg);
18038                 return;
18039         }
18040
18041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18042             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18043             (connected_addr &&
18044              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18045             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18046                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18047                         cr->status) ||
18048             (cr->status < 0 &&
18049              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18050               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18051                           cr->timeout_reason))) ||
18052             (cr->req_ie &&
18053              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18054             (cr->resp_ie &&
18055              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18056                      cr->resp_ie)) ||
18057             (cr->fils.update_erp_next_seq_num &&
18058              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18059                          cr->fils.erp_next_seq_num)) ||
18060             (cr->status == WLAN_STATUS_SUCCESS &&
18061              ((cr->fils.kek &&
18062                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18063                        cr->fils.kek)) ||
18064               (cr->fils.pmk &&
18065                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18066               (cr->fils.pmkid &&
18067                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18068                 goto nla_put_failure;
18069
18070         if (cr->valid_links) {
18071                 int i = 1;
18072                 struct nlattr *nested;
18073
18074                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18075                 if (!nested)
18076                         goto nla_put_failure;
18077
18078                 for_each_valid_link(cr, link) {
18079                         struct nlattr *nested_mlo_links;
18080                         const u8 *bssid = cr->links[link].bss ?
18081                                           cr->links[link].bss->bssid :
18082                                           cr->links[link].bssid;
18083
18084                         nested_mlo_links = nla_nest_start(msg, i);
18085                         if (!nested_mlo_links)
18086                                 goto nla_put_failure;
18087
18088                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18089                             (bssid &&
18090                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18091                             (cr->links[link].addr &&
18092                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18093                                      cr->links[link].addr)) ||
18094                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18095                                         cr->links[link].status))
18096                                 goto nla_put_failure;
18097
18098                         nla_nest_end(msg, nested_mlo_links);
18099                         i++;
18100                 }
18101                 nla_nest_end(msg, nested);
18102         }
18103
18104         genlmsg_end(msg, hdr);
18105
18106         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18107                                 NL80211_MCGRP_MLME, gfp);
18108         return;
18109
18110  nla_put_failure:
18111         nlmsg_free(msg);
18112 }
18113
18114 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18115                          struct net_device *netdev,
18116                          struct cfg80211_roam_info *info, gfp_t gfp)
18117 {
18118         struct sk_buff *msg;
18119         void *hdr;
18120         size_t link_info_size = 0;
18121         unsigned int link;
18122         const u8 *connected_addr = info->ap_mld_addr ?
18123                                    info->ap_mld_addr :
18124                                    (info->links[0].bss ?
18125                                     info->links[0].bss->bssid :
18126                                     info->links[0].bssid);
18127
18128         if (info->valid_links) {
18129                 for_each_valid_link(info, link) {
18130                         /* Nested attribute header */
18131                         link_info_size += NLA_HDRLEN;
18132                         /* Link ID */
18133                         link_info_size += nla_total_size(sizeof(u8));
18134                         link_info_size += info->links[link].addr ?
18135                                           nla_total_size(ETH_ALEN) : 0;
18136                         link_info_size += (info->links[link].bssid ||
18137                                            info->links[link].bss) ?
18138                                           nla_total_size(ETH_ALEN) : 0;
18139                 }
18140         }
18141
18142         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18143                         info->fils.kek_len + info->fils.pmk_len +
18144                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18145                         link_info_size, gfp);
18146         if (!msg)
18147                 return;
18148
18149         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18150         if (!hdr) {
18151                 nlmsg_free(msg);
18152                 return;
18153         }
18154
18155         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18156             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18157             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18158             (info->req_ie &&
18159              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18160                      info->req_ie)) ||
18161             (info->resp_ie &&
18162              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18163                      info->resp_ie)) ||
18164             (info->fils.update_erp_next_seq_num &&
18165              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18166                          info->fils.erp_next_seq_num)) ||
18167             (info->fils.kek &&
18168              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18169                      info->fils.kek)) ||
18170             (info->fils.pmk &&
18171              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18172             (info->fils.pmkid &&
18173              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18174                 goto nla_put_failure;
18175
18176         if (info->valid_links) {
18177                 int i = 1;
18178                 struct nlattr *nested;
18179
18180                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18181                 if (!nested)
18182                         goto nla_put_failure;
18183
18184                 for_each_valid_link(info, link) {
18185                         struct nlattr *nested_mlo_links;
18186                         const u8 *bssid = info->links[link].bss ?
18187                                           info->links[link].bss->bssid :
18188                                           info->links[link].bssid;
18189
18190                         nested_mlo_links = nla_nest_start(msg, i);
18191                         if (!nested_mlo_links)
18192                                 goto nla_put_failure;
18193
18194                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18195                             (bssid &&
18196                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18197                             (info->links[link].addr &&
18198                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18199                                      info->links[link].addr)))
18200                                 goto nla_put_failure;
18201
18202                         nla_nest_end(msg, nested_mlo_links);
18203                         i++;
18204                 }
18205                 nla_nest_end(msg, nested);
18206         }
18207
18208         genlmsg_end(msg, hdr);
18209
18210         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18211                                 NL80211_MCGRP_MLME, gfp);
18212         return;
18213
18214  nla_put_failure:
18215         nlmsg_free(msg);
18216 }
18217
18218 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18219                                   struct net_device *netdev, const u8 *bssid,
18220                                   const u8 *td_bitmap, u8 td_bitmap_len)
18221 {
18222         struct sk_buff *msg;
18223         void *hdr;
18224
18225         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18226         if (!msg)
18227                 return;
18228
18229         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18230         if (!hdr) {
18231                 nlmsg_free(msg);
18232                 return;
18233         }
18234
18235         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18236             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18237             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18238                 goto nla_put_failure;
18239
18240         if ((td_bitmap_len > 0) && td_bitmap)
18241                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18242                             td_bitmap_len, td_bitmap))
18243                         goto nla_put_failure;
18244
18245         genlmsg_end(msg, hdr);
18246
18247         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18248                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18249         return;
18250
18251  nla_put_failure:
18252         nlmsg_free(msg);
18253 }
18254
18255 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18256                                struct net_device *netdev, u16 reason,
18257                                const u8 *ie, size_t ie_len, bool from_ap)
18258 {
18259         struct sk_buff *msg;
18260         void *hdr;
18261
18262         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18263         if (!msg)
18264                 return;
18265
18266         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18267         if (!hdr) {
18268                 nlmsg_free(msg);
18269                 return;
18270         }
18271
18272         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18273             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18274             (reason &&
18275              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18276             (from_ap &&
18277              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18278             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18279                 goto nla_put_failure;
18280
18281         genlmsg_end(msg, hdr);
18282
18283         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18284                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18285         return;
18286
18287  nla_put_failure:
18288         nlmsg_free(msg);
18289 }
18290
18291 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18292 {
18293         struct wireless_dev *wdev = dev->ieee80211_ptr;
18294         struct wiphy *wiphy = wdev->wiphy;
18295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18296         struct sk_buff *msg;
18297         struct nlattr *links;
18298         void *hdr;
18299
18300         ASSERT_WDEV_LOCK(wdev);
18301         trace_cfg80211_links_removed(dev, link_mask);
18302
18303         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18304                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18305                 return;
18306
18307         if (WARN_ON(!wdev->valid_links || !link_mask ||
18308                     (wdev->valid_links & link_mask) != link_mask ||
18309                     wdev->valid_links == link_mask))
18310                 return;
18311
18312         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18313         wdev->valid_links &= ~link_mask;
18314
18315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18316         if (!msg)
18317                 return;
18318
18319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18320         if (!hdr) {
18321                 nlmsg_free(msg);
18322                 return;
18323         }
18324
18325         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18326             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18327                 goto nla_put_failure;
18328
18329         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18330         if (!links)
18331                 goto nla_put_failure;
18332
18333         while (link_mask) {
18334                 struct nlattr *link;
18335                 int link_id = __ffs(link_mask);
18336
18337                 link = nla_nest_start(msg, link_id + 1);
18338                 if (!link)
18339                         goto nla_put_failure;
18340
18341                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18342                         goto nla_put_failure;
18343
18344                 nla_nest_end(msg, link);
18345                 link_mask &= ~(1 << link_id);
18346         }
18347
18348         nla_nest_end(msg, links);
18349
18350         genlmsg_end(msg, hdr);
18351
18352         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18353                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18354         return;
18355
18356  nla_put_failure:
18357         nlmsg_free(msg);
18358 }
18359 EXPORT_SYMBOL(cfg80211_links_removed);
18360
18361 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18362                              struct net_device *netdev, const u8 *bssid,
18363                              gfp_t gfp)
18364 {
18365         struct sk_buff *msg;
18366         void *hdr;
18367
18368         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18369         if (!msg)
18370                 return;
18371
18372         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18373         if (!hdr) {
18374                 nlmsg_free(msg);
18375                 return;
18376         }
18377
18378         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18379             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18380             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18381                 goto nla_put_failure;
18382
18383         genlmsg_end(msg, hdr);
18384
18385         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18386                                 NL80211_MCGRP_MLME, gfp);
18387         return;
18388
18389  nla_put_failure:
18390         nlmsg_free(msg);
18391 }
18392
18393 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18394                                         const u8 *ie, u8 ie_len,
18395                                         int sig_dbm, gfp_t gfp)
18396 {
18397         struct wireless_dev *wdev = dev->ieee80211_ptr;
18398         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18399         struct sk_buff *msg;
18400         void *hdr;
18401
18402         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18403                 return;
18404
18405         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18406
18407         msg = nlmsg_new(100 + ie_len, gfp);
18408         if (!msg)
18409                 return;
18410
18411         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18412         if (!hdr) {
18413                 nlmsg_free(msg);
18414                 return;
18415         }
18416
18417         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18418             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18419             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18420             (ie_len && ie &&
18421              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18422             (sig_dbm &&
18423              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18424                 goto nla_put_failure;
18425
18426         genlmsg_end(msg, hdr);
18427
18428         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18429                                 NL80211_MCGRP_MLME, gfp);
18430         return;
18431
18432  nla_put_failure:
18433         nlmsg_free(msg);
18434 }
18435 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18436
18437 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18438                                  struct net_device *netdev, const u8 *addr,
18439                                  enum nl80211_key_type key_type, int key_id,
18440                                  const u8 *tsc, gfp_t gfp)
18441 {
18442         struct sk_buff *msg;
18443         void *hdr;
18444
18445         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18446         if (!msg)
18447                 return;
18448
18449         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18450         if (!hdr) {
18451                 nlmsg_free(msg);
18452                 return;
18453         }
18454
18455         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18456             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18457             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18458             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18459             (key_id != -1 &&
18460              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18461             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18462                 goto nla_put_failure;
18463
18464         genlmsg_end(msg, hdr);
18465
18466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18467                                 NL80211_MCGRP_MLME, gfp);
18468         return;
18469
18470  nla_put_failure:
18471         nlmsg_free(msg);
18472 }
18473
18474 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18475                                     struct ieee80211_channel *channel_before,
18476                                     struct ieee80211_channel *channel_after)
18477 {
18478         struct sk_buff *msg;
18479         void *hdr;
18480         struct nlattr *nl_freq;
18481
18482         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18483         if (!msg)
18484                 return;
18485
18486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18487         if (!hdr) {
18488                 nlmsg_free(msg);
18489                 return;
18490         }
18491
18492         /*
18493          * Since we are applying the beacon hint to a wiphy we know its
18494          * wiphy_idx is valid
18495          */
18496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18497                 goto nla_put_failure;
18498
18499         /* Before */
18500         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18501         if (!nl_freq)
18502                 goto nla_put_failure;
18503
18504         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18505                 goto nla_put_failure;
18506         nla_nest_end(msg, nl_freq);
18507
18508         /* After */
18509         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18510         if (!nl_freq)
18511                 goto nla_put_failure;
18512
18513         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18514                 goto nla_put_failure;
18515         nla_nest_end(msg, nl_freq);
18516
18517         genlmsg_end(msg, hdr);
18518
18519         rcu_read_lock();
18520         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18521                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18522         rcu_read_unlock();
18523
18524         return;
18525
18526 nla_put_failure:
18527         nlmsg_free(msg);
18528 }
18529
18530 static void nl80211_send_remain_on_chan_event(
18531         int cmd, struct cfg80211_registered_device *rdev,
18532         struct wireless_dev *wdev, u64 cookie,
18533         struct ieee80211_channel *chan,
18534         unsigned int duration, gfp_t gfp)
18535 {
18536         struct sk_buff *msg;
18537         void *hdr;
18538
18539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18540         if (!msg)
18541                 return;
18542
18543         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18544         if (!hdr) {
18545                 nlmsg_free(msg);
18546                 return;
18547         }
18548
18549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18550             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18551                                          wdev->netdev->ifindex)) ||
18552             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18553                               NL80211_ATTR_PAD) ||
18554             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18555             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18556                         NL80211_CHAN_NO_HT) ||
18557             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18558                               NL80211_ATTR_PAD))
18559                 goto nla_put_failure;
18560
18561         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18562             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18563                 goto nla_put_failure;
18564
18565         genlmsg_end(msg, hdr);
18566
18567         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18568                                 NL80211_MCGRP_MLME, gfp);
18569         return;
18570
18571  nla_put_failure:
18572         nlmsg_free(msg);
18573 }
18574
18575 void cfg80211_assoc_comeback(struct net_device *netdev,
18576                              const u8 *ap_addr, u32 timeout)
18577 {
18578         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18579         struct wiphy *wiphy = wdev->wiphy;
18580         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18581         struct sk_buff *msg;
18582         void *hdr;
18583
18584         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18585
18586         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18587         if (!msg)
18588                 return;
18589
18590         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18591         if (!hdr) {
18592                 nlmsg_free(msg);
18593                 return;
18594         }
18595
18596         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18597             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18598             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18599             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18600                 goto nla_put_failure;
18601
18602         genlmsg_end(msg, hdr);
18603
18604         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18605                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18606         return;
18607
18608  nla_put_failure:
18609         nlmsg_free(msg);
18610 }
18611 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18612
18613 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18614                                struct ieee80211_channel *chan,
18615                                unsigned int duration, gfp_t gfp)
18616 {
18617         struct wiphy *wiphy = wdev->wiphy;
18618         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18619
18620         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18621         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18622                                           rdev, wdev, cookie, chan,
18623                                           duration, gfp);
18624 }
18625 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18626
18627 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18628                                         struct ieee80211_channel *chan,
18629                                         gfp_t gfp)
18630 {
18631         struct wiphy *wiphy = wdev->wiphy;
18632         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18633
18634         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18635         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18636                                           rdev, wdev, cookie, chan, 0, gfp);
18637 }
18638 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18639
18640 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18641                                         struct ieee80211_channel *chan,
18642                                         gfp_t gfp)
18643 {
18644         struct wiphy *wiphy = wdev->wiphy;
18645         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18646
18647         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18648         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18649                                           rdev, wdev, cookie, chan, 0, gfp);
18650 }
18651 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18652
18653 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18654                       struct station_info *sinfo, gfp_t gfp)
18655 {
18656         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18657         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18658         struct sk_buff *msg;
18659
18660         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18661
18662         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18663         if (!msg)
18664                 return;
18665
18666         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18667                                  rdev, dev, mac_addr, sinfo) < 0) {
18668                 nlmsg_free(msg);
18669                 return;
18670         }
18671
18672         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18673                                 NL80211_MCGRP_MLME, gfp);
18674 }
18675 EXPORT_SYMBOL(cfg80211_new_sta);
18676
18677 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18678                             struct station_info *sinfo, gfp_t gfp)
18679 {
18680         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18681         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18682         struct sk_buff *msg;
18683         struct station_info empty_sinfo = {};
18684
18685         if (!sinfo)
18686                 sinfo = &empty_sinfo;
18687
18688         trace_cfg80211_del_sta(dev, mac_addr);
18689
18690         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18691         if (!msg) {
18692                 cfg80211_sinfo_release_content(sinfo);
18693                 return;
18694         }
18695
18696         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18697                                  rdev, dev, mac_addr, sinfo) < 0) {
18698                 nlmsg_free(msg);
18699                 return;
18700         }
18701
18702         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18703                                 NL80211_MCGRP_MLME, gfp);
18704 }
18705 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18706
18707 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18708                           enum nl80211_connect_failed_reason reason,
18709                           gfp_t gfp)
18710 {
18711         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18712         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18713         struct sk_buff *msg;
18714         void *hdr;
18715
18716         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18717         if (!msg)
18718                 return;
18719
18720         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18721         if (!hdr) {
18722                 nlmsg_free(msg);
18723                 return;
18724         }
18725
18726         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18727             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18728             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18729                 goto nla_put_failure;
18730
18731         genlmsg_end(msg, hdr);
18732
18733         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18734                                 NL80211_MCGRP_MLME, gfp);
18735         return;
18736
18737  nla_put_failure:
18738         nlmsg_free(msg);
18739 }
18740 EXPORT_SYMBOL(cfg80211_conn_failed);
18741
18742 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18743                                        const u8 *addr, gfp_t gfp)
18744 {
18745         struct wireless_dev *wdev = dev->ieee80211_ptr;
18746         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18747         struct sk_buff *msg;
18748         void *hdr;
18749         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18750
18751         if (!nlportid)
18752                 return false;
18753
18754         msg = nlmsg_new(100, gfp);
18755         if (!msg)
18756                 return true;
18757
18758         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18759         if (!hdr) {
18760                 nlmsg_free(msg);
18761                 return true;
18762         }
18763
18764         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18765             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18766             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18767                 goto nla_put_failure;
18768
18769         genlmsg_end(msg, hdr);
18770         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18771         return true;
18772
18773  nla_put_failure:
18774         nlmsg_free(msg);
18775         return true;
18776 }
18777
18778 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18779                                 const u8 *addr, gfp_t gfp)
18780 {
18781         struct wireless_dev *wdev = dev->ieee80211_ptr;
18782         bool ret;
18783
18784         trace_cfg80211_rx_spurious_frame(dev, addr);
18785
18786         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18787                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18788                 trace_cfg80211_return_bool(false);
18789                 return false;
18790         }
18791         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18792                                          addr, gfp);
18793         trace_cfg80211_return_bool(ret);
18794         return ret;
18795 }
18796 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18797
18798 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18799                                         const u8 *addr, gfp_t gfp)
18800 {
18801         struct wireless_dev *wdev = dev->ieee80211_ptr;
18802         bool ret;
18803
18804         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18805
18806         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18807                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18808                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18809                 trace_cfg80211_return_bool(false);
18810                 return false;
18811         }
18812         ret = __nl80211_unexpected_frame(dev,
18813                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18814                                          addr, gfp);
18815         trace_cfg80211_return_bool(ret);
18816         return ret;
18817 }
18818 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18819
18820 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18821                       struct wireless_dev *wdev, u32 nlportid,
18822                       struct cfg80211_rx_info *info, gfp_t gfp)
18823 {
18824         struct net_device *netdev = wdev->netdev;
18825         struct sk_buff *msg;
18826         void *hdr;
18827
18828         msg = nlmsg_new(100 + info->len, gfp);
18829         if (!msg)
18830                 return -ENOMEM;
18831
18832         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18833         if (!hdr) {
18834                 nlmsg_free(msg);
18835                 return -ENOMEM;
18836         }
18837
18838         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18839             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18840                                         netdev->ifindex)) ||
18841             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18842                               NL80211_ATTR_PAD) ||
18843             (info->have_link_id &&
18844              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18845             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18846             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18847             (info->sig_dbm &&
18848              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18849             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18850             (info->flags &&
18851              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18852             (info->rx_tstamp && nla_put_u64_64bit(msg,
18853                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18854                                                   info->rx_tstamp,
18855                                                   NL80211_ATTR_PAD)) ||
18856             (info->ack_tstamp && nla_put_u64_64bit(msg,
18857                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18858                                                    info->ack_tstamp,
18859                                                    NL80211_ATTR_PAD)))
18860                 goto nla_put_failure;
18861
18862         genlmsg_end(msg, hdr);
18863
18864         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18865
18866  nla_put_failure:
18867         nlmsg_free(msg);
18868         return -ENOBUFS;
18869 }
18870
18871 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18872                                     struct cfg80211_tx_status *status,
18873                                     gfp_t gfp, enum nl80211_commands command)
18874 {
18875         struct wiphy *wiphy = wdev->wiphy;
18876         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18877         struct net_device *netdev = wdev->netdev;
18878         struct sk_buff *msg;
18879         void *hdr;
18880
18881         if (command == NL80211_CMD_FRAME_TX_STATUS)
18882                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18883                                               status->ack);
18884         else
18885                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18886                                                       status->ack);
18887
18888         msg = nlmsg_new(100 + status->len, gfp);
18889         if (!msg)
18890                 return;
18891
18892         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18893         if (!hdr) {
18894                 nlmsg_free(msg);
18895                 return;
18896         }
18897
18898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18899             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18900                                    netdev->ifindex)) ||
18901             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18902                               NL80211_ATTR_PAD) ||
18903             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18904             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18905                               NL80211_ATTR_PAD) ||
18906             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18907             (status->tx_tstamp &&
18908              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18909                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18910             (status->ack_tstamp &&
18911              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18912                                status->ack_tstamp, NL80211_ATTR_PAD)))
18913                 goto nla_put_failure;
18914
18915         genlmsg_end(msg, hdr);
18916
18917         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18918                                 NL80211_MCGRP_MLME, gfp);
18919         return;
18920
18921 nla_put_failure:
18922         nlmsg_free(msg);
18923 }
18924
18925 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18926                                      const u8 *buf, size_t len, bool ack,
18927                                      gfp_t gfp)
18928 {
18929         struct cfg80211_tx_status status = {
18930                 .cookie = cookie,
18931                 .buf = buf,
18932                 .len = len,
18933                 .ack = ack
18934         };
18935
18936         nl80211_frame_tx_status(wdev, &status, gfp,
18937                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18938 }
18939 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18940
18941 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18942                                  struct cfg80211_tx_status *status, gfp_t gfp)
18943 {
18944         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18945 }
18946 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18947
18948 static int __nl80211_rx_control_port(struct net_device *dev,
18949                                      struct sk_buff *skb,
18950                                      bool unencrypted,
18951                                      int link_id,
18952                                      gfp_t gfp)
18953 {
18954         struct wireless_dev *wdev = dev->ieee80211_ptr;
18955         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18956         struct ethhdr *ehdr = eth_hdr(skb);
18957         const u8 *addr = ehdr->h_source;
18958         u16 proto = be16_to_cpu(skb->protocol);
18959         struct sk_buff *msg;
18960         void *hdr;
18961         struct nlattr *frame;
18962
18963         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18964
18965         if (!nlportid)
18966                 return -ENOENT;
18967
18968         msg = nlmsg_new(100 + skb->len, gfp);
18969         if (!msg)
18970                 return -ENOMEM;
18971
18972         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18973         if (!hdr) {
18974                 nlmsg_free(msg);
18975                 return -ENOBUFS;
18976         }
18977
18978         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18979             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18980             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18981                               NL80211_ATTR_PAD) ||
18982             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18983             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18984             (link_id >= 0 &&
18985              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
18986             (unencrypted && nla_put_flag(msg,
18987                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18988                 goto nla_put_failure;
18989
18990         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18991         if (!frame)
18992                 goto nla_put_failure;
18993
18994         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18995         genlmsg_end(msg, hdr);
18996
18997         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18998
18999  nla_put_failure:
19000         nlmsg_free(msg);
19001         return -ENOBUFS;
19002 }
19003
19004 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19005                               bool unencrypted, int link_id)
19006 {
19007         int ret;
19008
19009         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19010         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19011                                         GFP_ATOMIC);
19012         trace_cfg80211_return_bool(ret == 0);
19013         return ret == 0;
19014 }
19015 EXPORT_SYMBOL(cfg80211_rx_control_port);
19016
19017 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19018                                             const char *mac, gfp_t gfp)
19019 {
19020         struct wireless_dev *wdev = dev->ieee80211_ptr;
19021         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19022         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19023         void **cb;
19024
19025         if (!msg)
19026                 return NULL;
19027
19028         cb = (void **)msg->cb;
19029
19030         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19031         if (!cb[0]) {
19032                 nlmsg_free(msg);
19033                 return NULL;
19034         }
19035
19036         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19037             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19038                 goto nla_put_failure;
19039
19040         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19041                 goto nla_put_failure;
19042
19043         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19044         if (!cb[1])
19045                 goto nla_put_failure;
19046
19047         cb[2] = rdev;
19048
19049         return msg;
19050  nla_put_failure:
19051         nlmsg_free(msg);
19052         return NULL;
19053 }
19054
19055 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19056 {
19057         void **cb = (void **)msg->cb;
19058         struct cfg80211_registered_device *rdev = cb[2];
19059
19060         nla_nest_end(msg, cb[1]);
19061         genlmsg_end(msg, cb[0]);
19062
19063         memset(msg->cb, 0, sizeof(msg->cb));
19064
19065         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19066                                 NL80211_MCGRP_MLME, gfp);
19067 }
19068
19069 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19070                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19071                               s32 rssi_level, gfp_t gfp)
19072 {
19073         struct sk_buff *msg;
19074         struct wireless_dev *wdev = dev->ieee80211_ptr;
19075         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19076
19077         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19078
19079         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19080                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19081                 return;
19082
19083         if (wdev->cqm_config) {
19084                 wdev->cqm_config->last_rssi_event_value = rssi_level;
19085
19086                 cfg80211_cqm_rssi_update(rdev, dev);
19087
19088                 if (rssi_level == 0)
19089                         rssi_level = wdev->cqm_config->last_rssi_event_value;
19090         }
19091
19092         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19093         if (!msg)
19094                 return;
19095
19096         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19097                         rssi_event))
19098                 goto nla_put_failure;
19099
19100         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19101                                       rssi_level))
19102                 goto nla_put_failure;
19103
19104         cfg80211_send_cqm(msg, gfp);
19105
19106         return;
19107
19108  nla_put_failure:
19109         nlmsg_free(msg);
19110 }
19111 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19112
19113 void cfg80211_cqm_txe_notify(struct net_device *dev,
19114                              const u8 *peer, u32 num_packets,
19115                              u32 rate, u32 intvl, gfp_t gfp)
19116 {
19117         struct sk_buff *msg;
19118
19119         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19120         if (!msg)
19121                 return;
19122
19123         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19124                 goto nla_put_failure;
19125
19126         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19127                 goto nla_put_failure;
19128
19129         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19130                 goto nla_put_failure;
19131
19132         cfg80211_send_cqm(msg, gfp);
19133         return;
19134
19135  nla_put_failure:
19136         nlmsg_free(msg);
19137 }
19138 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19139
19140 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19141                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19142 {
19143         struct sk_buff *msg;
19144
19145         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19146
19147         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19148         if (!msg)
19149                 return;
19150
19151         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19152                 goto nla_put_failure;
19153
19154         cfg80211_send_cqm(msg, gfp);
19155         return;
19156
19157  nla_put_failure:
19158         nlmsg_free(msg);
19159 }
19160 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19161
19162 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19163 {
19164         struct sk_buff *msg;
19165
19166         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19167         if (!msg)
19168                 return;
19169
19170         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19171                 goto nla_put_failure;
19172
19173         cfg80211_send_cqm(msg, gfp);
19174         return;
19175
19176  nla_put_failure:
19177         nlmsg_free(msg);
19178 }
19179 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19180
19181 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19182                                      struct net_device *netdev, const u8 *bssid,
19183                                      const u8 *replay_ctr, gfp_t gfp)
19184 {
19185         struct sk_buff *msg;
19186         struct nlattr *rekey_attr;
19187         void *hdr;
19188
19189         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19190         if (!msg)
19191                 return;
19192
19193         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19194         if (!hdr) {
19195                 nlmsg_free(msg);
19196                 return;
19197         }
19198
19199         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19200             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19201             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19202                 goto nla_put_failure;
19203
19204         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19205         if (!rekey_attr)
19206                 goto nla_put_failure;
19207
19208         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19209                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19210                 goto nla_put_failure;
19211
19212         nla_nest_end(msg, rekey_attr);
19213
19214         genlmsg_end(msg, hdr);
19215
19216         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19217                                 NL80211_MCGRP_MLME, gfp);
19218         return;
19219
19220  nla_put_failure:
19221         nlmsg_free(msg);
19222 }
19223
19224 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19225                                const u8 *replay_ctr, gfp_t gfp)
19226 {
19227         struct wireless_dev *wdev = dev->ieee80211_ptr;
19228         struct wiphy *wiphy = wdev->wiphy;
19229         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19230
19231         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19232         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19233 }
19234 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19235
19236 static void
19237 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19238                                struct net_device *netdev, int index,
19239                                const u8 *bssid, bool preauth, gfp_t gfp)
19240 {
19241         struct sk_buff *msg;
19242         struct nlattr *attr;
19243         void *hdr;
19244
19245         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19246         if (!msg)
19247                 return;
19248
19249         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19250         if (!hdr) {
19251                 nlmsg_free(msg);
19252                 return;
19253         }
19254
19255         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19256             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19257                 goto nla_put_failure;
19258
19259         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19260         if (!attr)
19261                 goto nla_put_failure;
19262
19263         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19264             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19265             (preauth &&
19266              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19267                 goto nla_put_failure;
19268
19269         nla_nest_end(msg, attr);
19270
19271         genlmsg_end(msg, hdr);
19272
19273         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19274                                 NL80211_MCGRP_MLME, gfp);
19275         return;
19276
19277  nla_put_failure:
19278         nlmsg_free(msg);
19279 }
19280
19281 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19282                                      const u8 *bssid, bool preauth, gfp_t gfp)
19283 {
19284         struct wireless_dev *wdev = dev->ieee80211_ptr;
19285         struct wiphy *wiphy = wdev->wiphy;
19286         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19287
19288         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19289         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19290 }
19291 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19292
19293 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19294                                      struct net_device *netdev,
19295                                      unsigned int link_id,
19296                                      struct cfg80211_chan_def *chandef,
19297                                      gfp_t gfp,
19298                                      enum nl80211_commands notif,
19299                                      u8 count, bool quiet, u16 punct_bitmap)
19300 {
19301         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19302         struct sk_buff *msg;
19303         void *hdr;
19304
19305         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19306         if (!msg)
19307                 return;
19308
19309         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19310         if (!hdr) {
19311                 nlmsg_free(msg);
19312                 return;
19313         }
19314
19315         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19316                 goto nla_put_failure;
19317
19318         if (wdev->valid_links &&
19319             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19320                 goto nla_put_failure;
19321
19322         if (nl80211_send_chandef(msg, chandef))
19323                 goto nla_put_failure;
19324
19325         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19326                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19327                         goto nla_put_failure;
19328                 if (quiet &&
19329                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19330                         goto nla_put_failure;
19331         }
19332
19333         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19334                 goto nla_put_failure;
19335
19336         genlmsg_end(msg, hdr);
19337
19338         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19339                                 NL80211_MCGRP_MLME, gfp);
19340         return;
19341
19342  nla_put_failure:
19343         nlmsg_free(msg);
19344 }
19345
19346 void cfg80211_ch_switch_notify(struct net_device *dev,
19347                                struct cfg80211_chan_def *chandef,
19348                                unsigned int link_id, u16 punct_bitmap)
19349 {
19350         struct wireless_dev *wdev = dev->ieee80211_ptr;
19351         struct wiphy *wiphy = wdev->wiphy;
19352         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19353
19354         ASSERT_WDEV_LOCK(wdev);
19355         WARN_INVALID_LINK_ID(wdev, link_id);
19356
19357         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19358
19359         switch (wdev->iftype) {
19360         case NL80211_IFTYPE_STATION:
19361         case NL80211_IFTYPE_P2P_CLIENT:
19362                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19363                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19364                                                         chandef->chan);
19365                 break;
19366         case NL80211_IFTYPE_MESH_POINT:
19367                 wdev->u.mesh.chandef = *chandef;
19368                 wdev->u.mesh.preset_chandef = *chandef;
19369                 break;
19370         case NL80211_IFTYPE_AP:
19371         case NL80211_IFTYPE_P2P_GO:
19372                 wdev->links[link_id].ap.chandef = *chandef;
19373                 break;
19374         case NL80211_IFTYPE_ADHOC:
19375                 wdev->u.ibss.chandef = *chandef;
19376                 break;
19377         default:
19378                 WARN_ON(1);
19379                 break;
19380         }
19381
19382         cfg80211_sched_dfs_chan_update(rdev);
19383
19384         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19385                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19386                                  punct_bitmap);
19387 }
19388 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19389
19390 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19391                                        struct cfg80211_chan_def *chandef,
19392                                        unsigned int link_id, u8 count,
19393                                        bool quiet, u16 punct_bitmap)
19394 {
19395         struct wireless_dev *wdev = dev->ieee80211_ptr;
19396         struct wiphy *wiphy = wdev->wiphy;
19397         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19398
19399         ASSERT_WDEV_LOCK(wdev);
19400         WARN_INVALID_LINK_ID(wdev, link_id);
19401
19402         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19403                                                 punct_bitmap);
19404
19405
19406         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19407                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19408                                  count, quiet, punct_bitmap);
19409 }
19410 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19411
19412 int cfg80211_bss_color_notify(struct net_device *dev,
19413                               enum nl80211_commands cmd, u8 count,
19414                               u64 color_bitmap)
19415 {
19416         struct wireless_dev *wdev = dev->ieee80211_ptr;
19417         struct wiphy *wiphy = wdev->wiphy;
19418         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19419         struct sk_buff *msg;
19420         void *hdr;
19421
19422         ASSERT_WDEV_LOCK(wdev);
19423
19424         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19425
19426         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19427         if (!msg)
19428                 return -ENOMEM;
19429
19430         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19431         if (!hdr)
19432                 goto nla_put_failure;
19433
19434         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19435                 goto nla_put_failure;
19436
19437         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19438             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19439                 goto nla_put_failure;
19440
19441         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19442             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19443                               color_bitmap, NL80211_ATTR_PAD))
19444                 goto nla_put_failure;
19445
19446         genlmsg_end(msg, hdr);
19447
19448         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19449                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19450
19451 nla_put_failure:
19452         nlmsg_free(msg);
19453         return -EINVAL;
19454 }
19455 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19456
19457 void
19458 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19459                      const struct cfg80211_chan_def *chandef,
19460                      enum nl80211_radar_event event,
19461                      struct net_device *netdev, gfp_t gfp)
19462 {
19463         struct sk_buff *msg;
19464         void *hdr;
19465
19466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19467         if (!msg)
19468                 return;
19469
19470         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19471         if (!hdr) {
19472                 nlmsg_free(msg);
19473                 return;
19474         }
19475
19476         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19477                 goto nla_put_failure;
19478
19479         /* NOP and radar events don't need a netdev parameter */
19480         if (netdev) {
19481                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19482
19483                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19484                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19485                                       NL80211_ATTR_PAD))
19486                         goto nla_put_failure;
19487         }
19488
19489         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19490                 goto nla_put_failure;
19491
19492         if (nl80211_send_chandef(msg, chandef))
19493                 goto nla_put_failure;
19494
19495         genlmsg_end(msg, hdr);
19496
19497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19498                                 NL80211_MCGRP_MLME, gfp);
19499         return;
19500
19501  nla_put_failure:
19502         nlmsg_free(msg);
19503 }
19504
19505 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19506                                        struct sta_opmode_info *sta_opmode,
19507                                        gfp_t gfp)
19508 {
19509         struct sk_buff *msg;
19510         struct wireless_dev *wdev = dev->ieee80211_ptr;
19511         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19512         void *hdr;
19513
19514         if (WARN_ON(!mac))
19515                 return;
19516
19517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19518         if (!msg)
19519                 return;
19520
19521         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19522         if (!hdr) {
19523                 nlmsg_free(msg);
19524                 return;
19525         }
19526
19527         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19528                 goto nla_put_failure;
19529
19530         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19531                 goto nla_put_failure;
19532
19533         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19534                 goto nla_put_failure;
19535
19536         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19537             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19538                 goto nla_put_failure;
19539
19540         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19541             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19542                 goto nla_put_failure;
19543
19544         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19545             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19546                 goto nla_put_failure;
19547
19548         genlmsg_end(msg, hdr);
19549
19550         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19551                                 NL80211_MCGRP_MLME, gfp);
19552
19553         return;
19554
19555 nla_put_failure:
19556         nlmsg_free(msg);
19557 }
19558 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19559
19560 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19561                            u64 cookie, bool acked, s32 ack_signal,
19562                            bool is_valid_ack_signal, gfp_t gfp)
19563 {
19564         struct wireless_dev *wdev = dev->ieee80211_ptr;
19565         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19566         struct sk_buff *msg;
19567         void *hdr;
19568
19569         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19570
19571         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19572
19573         if (!msg)
19574                 return;
19575
19576         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19577         if (!hdr) {
19578                 nlmsg_free(msg);
19579                 return;
19580         }
19581
19582         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19583             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19584             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19585             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19586                               NL80211_ATTR_PAD) ||
19587             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19588             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19589                                                 ack_signal)))
19590                 goto nla_put_failure;
19591
19592         genlmsg_end(msg, hdr);
19593
19594         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19595                                 NL80211_MCGRP_MLME, gfp);
19596         return;
19597
19598  nla_put_failure:
19599         nlmsg_free(msg);
19600 }
19601 EXPORT_SYMBOL(cfg80211_probe_status);
19602
19603 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19604                                      size_t len, int freq, int sig_dbm)
19605 {
19606         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19607         struct sk_buff *msg;
19608         void *hdr;
19609         struct cfg80211_beacon_registration *reg;
19610
19611         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19612
19613         spin_lock_bh(&rdev->beacon_registrations_lock);
19614         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19615                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19616                 if (!msg) {
19617                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19618                         return;
19619                 }
19620
19621                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19622                 if (!hdr)
19623                         goto nla_put_failure;
19624
19625                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19626                     (freq &&
19627                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19628                                   KHZ_TO_MHZ(freq)) ||
19629                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19630                                   freq % 1000))) ||
19631                     (sig_dbm &&
19632                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19633                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19634                         goto nla_put_failure;
19635
19636                 genlmsg_end(msg, hdr);
19637
19638                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19639         }
19640         spin_unlock_bh(&rdev->beacon_registrations_lock);
19641         return;
19642
19643  nla_put_failure:
19644         spin_unlock_bh(&rdev->beacon_registrations_lock);
19645         nlmsg_free(msg);
19646 }
19647 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19648
19649 #ifdef CONFIG_PM
19650 static int cfg80211_net_detect_results(struct sk_buff *msg,
19651                                        struct cfg80211_wowlan_wakeup *wakeup)
19652 {
19653         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19654         struct nlattr *nl_results, *nl_match, *nl_freqs;
19655         int i, j;
19656
19657         nl_results = nla_nest_start_noflag(msg,
19658                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19659         if (!nl_results)
19660                 return -EMSGSIZE;
19661
19662         for (i = 0; i < nd->n_matches; i++) {
19663                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19664
19665                 nl_match = nla_nest_start_noflag(msg, i);
19666                 if (!nl_match)
19667                         break;
19668
19669                 /* The SSID attribute is optional in nl80211, but for
19670                  * simplicity reasons it's always present in the
19671                  * cfg80211 structure.  If a driver can't pass the
19672                  * SSID, that needs to be changed.  A zero length SSID
19673                  * is still a valid SSID (wildcard), so it cannot be
19674                  * used for this purpose.
19675                  */
19676                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19677                             match->ssid.ssid)) {
19678                         nla_nest_cancel(msg, nl_match);
19679                         goto out;
19680                 }
19681
19682                 if (match->n_channels) {
19683                         nl_freqs = nla_nest_start_noflag(msg,
19684                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19685                         if (!nl_freqs) {
19686                                 nla_nest_cancel(msg, nl_match);
19687                                 goto out;
19688                         }
19689
19690                         for (j = 0; j < match->n_channels; j++) {
19691                                 if (nla_put_u32(msg, j, match->channels[j])) {
19692                                         nla_nest_cancel(msg, nl_freqs);
19693                                         nla_nest_cancel(msg, nl_match);
19694                                         goto out;
19695                                 }
19696                         }
19697
19698                         nla_nest_end(msg, nl_freqs);
19699                 }
19700
19701                 nla_nest_end(msg, nl_match);
19702         }
19703
19704 out:
19705         nla_nest_end(msg, nl_results);
19706         return 0;
19707 }
19708
19709 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19710                                    struct cfg80211_wowlan_wakeup *wakeup,
19711                                    gfp_t gfp)
19712 {
19713         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19714         struct sk_buff *msg;
19715         void *hdr;
19716         int size = 200;
19717
19718         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19719
19720         if (wakeup)
19721                 size += wakeup->packet_present_len;
19722
19723         msg = nlmsg_new(size, gfp);
19724         if (!msg)
19725                 return;
19726
19727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19728         if (!hdr)
19729                 goto free_msg;
19730
19731         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19732             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19733                               NL80211_ATTR_PAD))
19734                 goto free_msg;
19735
19736         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19737                                         wdev->netdev->ifindex))
19738                 goto free_msg;
19739
19740         if (wakeup) {
19741                 struct nlattr *reasons;
19742
19743                 reasons = nla_nest_start_noflag(msg,
19744                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19745                 if (!reasons)
19746                         goto free_msg;
19747
19748                 if (wakeup->disconnect &&
19749                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19750                         goto free_msg;
19751                 if (wakeup->magic_pkt &&
19752                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19753                         goto free_msg;
19754                 if (wakeup->gtk_rekey_failure &&
19755                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19756                         goto free_msg;
19757                 if (wakeup->eap_identity_req &&
19758                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19759                         goto free_msg;
19760                 if (wakeup->four_way_handshake &&
19761                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19762                         goto free_msg;
19763                 if (wakeup->rfkill_release &&
19764                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19765                         goto free_msg;
19766
19767                 if (wakeup->pattern_idx >= 0 &&
19768                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19769                                 wakeup->pattern_idx))
19770                         goto free_msg;
19771
19772                 if (wakeup->tcp_match &&
19773                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19774                         goto free_msg;
19775
19776                 if (wakeup->tcp_connlost &&
19777                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19778                         goto free_msg;
19779
19780                 if (wakeup->tcp_nomoretokens &&
19781                     nla_put_flag(msg,
19782                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19783                         goto free_msg;
19784
19785                 if (wakeup->packet) {
19786                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19787                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19788
19789                         if (!wakeup->packet_80211) {
19790                                 pkt_attr =
19791                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19792                                 len_attr =
19793                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19794                         }
19795
19796                         if (wakeup->packet_len &&
19797                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19798                                 goto free_msg;
19799
19800                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19801                                     wakeup->packet))
19802                                 goto free_msg;
19803                 }
19804
19805                 if (wakeup->net_detect &&
19806                     cfg80211_net_detect_results(msg, wakeup))
19807                                 goto free_msg;
19808
19809                 nla_nest_end(msg, reasons);
19810         }
19811
19812         genlmsg_end(msg, hdr);
19813
19814         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19815                                 NL80211_MCGRP_MLME, gfp);
19816         return;
19817
19818  free_msg:
19819         nlmsg_free(msg);
19820 }
19821 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19822 #endif
19823
19824 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19825                                 enum nl80211_tdls_operation oper,
19826                                 u16 reason_code, gfp_t gfp)
19827 {
19828         struct wireless_dev *wdev = dev->ieee80211_ptr;
19829         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19830         struct sk_buff *msg;
19831         void *hdr;
19832
19833         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19834                                          reason_code);
19835
19836         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19837         if (!msg)
19838                 return;
19839
19840         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19841         if (!hdr) {
19842                 nlmsg_free(msg);
19843                 return;
19844         }
19845
19846         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19847             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19848             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19850             (reason_code > 0 &&
19851              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19852                 goto nla_put_failure;
19853
19854         genlmsg_end(msg, hdr);
19855
19856         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19857                                 NL80211_MCGRP_MLME, gfp);
19858         return;
19859
19860  nla_put_failure:
19861         nlmsg_free(msg);
19862 }
19863 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19864
19865 static int nl80211_netlink_notify(struct notifier_block * nb,
19866                                   unsigned long state,
19867                                   void *_notify)
19868 {
19869         struct netlink_notify *notify = _notify;
19870         struct cfg80211_registered_device *rdev;
19871         struct wireless_dev *wdev;
19872         struct cfg80211_beacon_registration *reg, *tmp;
19873
19874         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19875                 return NOTIFY_DONE;
19876
19877         rcu_read_lock();
19878
19879         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19880                 struct cfg80211_sched_scan_request *sched_scan_req;
19881
19882                 list_for_each_entry_rcu(sched_scan_req,
19883                                         &rdev->sched_scan_req_list,
19884                                         list) {
19885                         if (sched_scan_req->owner_nlportid == notify->portid) {
19886                                 sched_scan_req->nl_owner_dead = true;
19887                                 wiphy_work_queue(&rdev->wiphy,
19888                                                  &rdev->sched_scan_stop_wk);
19889                         }
19890                 }
19891
19892                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19893                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19894
19895                         if (wdev->owner_nlportid == notify->portid) {
19896                                 wdev->nl_owner_dead = true;
19897                                 schedule_work(&rdev->destroy_work);
19898                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19899                                 schedule_work(&wdev->disconnect_wk);
19900                         }
19901
19902                         cfg80211_release_pmsr(wdev, notify->portid);
19903                 }
19904
19905                 spin_lock_bh(&rdev->beacon_registrations_lock);
19906                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19907                                          list) {
19908                         if (reg->nlportid == notify->portid) {
19909                                 list_del(&reg->list);
19910                                 kfree(reg);
19911                                 break;
19912                         }
19913                 }
19914                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19915         }
19916
19917         rcu_read_unlock();
19918
19919         /*
19920          * It is possible that the user space process that is controlling the
19921          * indoor setting disappeared, so notify the regulatory core.
19922          */
19923         regulatory_netlink_notify(notify->portid);
19924         return NOTIFY_OK;
19925 }
19926
19927 static struct notifier_block nl80211_netlink_notifier = {
19928         .notifier_call = nl80211_netlink_notify,
19929 };
19930
19931 void cfg80211_ft_event(struct net_device *netdev,
19932                        struct cfg80211_ft_event_params *ft_event)
19933 {
19934         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19935         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19936         struct sk_buff *msg;
19937         void *hdr;
19938
19939         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19940
19941         if (!ft_event->target_ap)
19942                 return;
19943
19944         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19945                         GFP_KERNEL);
19946         if (!msg)
19947                 return;
19948
19949         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19950         if (!hdr)
19951                 goto out;
19952
19953         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19954             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19955             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19956                 goto out;
19957
19958         if (ft_event->ies &&
19959             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19960                 goto out;
19961         if (ft_event->ric_ies &&
19962             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19963                     ft_event->ric_ies))
19964                 goto out;
19965
19966         genlmsg_end(msg, hdr);
19967
19968         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19969                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19970         return;
19971  out:
19972         nlmsg_free(msg);
19973 }
19974 EXPORT_SYMBOL(cfg80211_ft_event);
19975
19976 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19977 {
19978         struct cfg80211_registered_device *rdev;
19979         struct sk_buff *msg;
19980         void *hdr;
19981         u32 nlportid;
19982
19983         rdev = wiphy_to_rdev(wdev->wiphy);
19984         if (!rdev->crit_proto_nlportid)
19985                 return;
19986
19987         nlportid = rdev->crit_proto_nlportid;
19988         rdev->crit_proto_nlportid = 0;
19989
19990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19991         if (!msg)
19992                 return;
19993
19994         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19995         if (!hdr)
19996                 goto nla_put_failure;
19997
19998         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19999             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20000                               NL80211_ATTR_PAD))
20001                 goto nla_put_failure;
20002
20003         genlmsg_end(msg, hdr);
20004
20005         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20006         return;
20007
20008  nla_put_failure:
20009         nlmsg_free(msg);
20010 }
20011 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20012
20013 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20014 {
20015         struct wiphy *wiphy = wdev->wiphy;
20016         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20017         struct sk_buff *msg;
20018         void *hdr;
20019
20020         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20021         if (!msg)
20022                 return;
20023
20024         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20025         if (!hdr)
20026                 goto out;
20027
20028         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20029             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20030             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20031                               NL80211_ATTR_PAD) ||
20032             (wdev->valid_links &&
20033              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20034                 goto out;
20035
20036         genlmsg_end(msg, hdr);
20037
20038         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20039                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20040         return;
20041  out:
20042         nlmsg_free(msg);
20043 }
20044
20045 int cfg80211_external_auth_request(struct net_device *dev,
20046                                    struct cfg80211_external_auth_params *params,
20047                                    gfp_t gfp)
20048 {
20049         struct wireless_dev *wdev = dev->ieee80211_ptr;
20050         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20051         struct sk_buff *msg;
20052         void *hdr;
20053
20054         if (!wdev->conn_owner_nlportid)
20055                 return -EINVAL;
20056
20057         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20058         if (!msg)
20059                 return -ENOMEM;
20060
20061         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20062         if (!hdr)
20063                 goto nla_put_failure;
20064
20065         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20066             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20067             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20068             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20069                         params->action) ||
20070             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20071             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20072                     params->ssid.ssid) ||
20073             (!is_zero_ether_addr(params->mld_addr) &&
20074              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20075                 goto nla_put_failure;
20076
20077         genlmsg_end(msg, hdr);
20078         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20079                         wdev->conn_owner_nlportid);
20080         return 0;
20081
20082  nla_put_failure:
20083         nlmsg_free(msg);
20084         return -ENOBUFS;
20085 }
20086 EXPORT_SYMBOL(cfg80211_external_auth_request);
20087
20088 void cfg80211_update_owe_info_event(struct net_device *netdev,
20089                                     struct cfg80211_update_owe_info *owe_info,
20090                                     gfp_t gfp)
20091 {
20092         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20093         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20094         struct sk_buff *msg;
20095         void *hdr;
20096
20097         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20098
20099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20100         if (!msg)
20101                 return;
20102
20103         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20104         if (!hdr)
20105                 goto nla_put_failure;
20106
20107         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20108             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20109             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20110                 goto nla_put_failure;
20111
20112         if (!owe_info->ie_len ||
20113             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20114                 goto nla_put_failure;
20115
20116         if (owe_info->assoc_link_id != -1) {
20117                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20118                                owe_info->assoc_link_id))
20119                         goto nla_put_failure;
20120
20121                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20122                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20123                             owe_info->peer_mld_addr))
20124                         goto nla_put_failure;
20125         }
20126
20127         genlmsg_end(msg, hdr);
20128
20129         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20130                                 NL80211_MCGRP_MLME, gfp);
20131         return;
20132
20133 nla_put_failure:
20134         genlmsg_cancel(msg, hdr);
20135         nlmsg_free(msg);
20136 }
20137 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20138
20139 /* initialisation/exit functions */
20140
20141 int __init nl80211_init(void)
20142 {
20143         int err;
20144
20145         err = genl_register_family(&nl80211_fam);
20146         if (err)
20147                 return err;
20148
20149         err = netlink_register_notifier(&nl80211_netlink_notifier);
20150         if (err)
20151                 goto err_out;
20152
20153         return 0;
20154  err_out:
20155         genl_unregister_family(&nl80211_fam);
20156         return err;
20157 }
20158
20159 void nl80211_exit(void)
20160 {
20161         netlink_unregister_notifier(&nl80211_netlink_notifier);
20162         genl_unregister_family(&nl80211_fam);
20163 }