net/mac80211/cfg.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * mac80211 configuration hooks for cfg80211
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2015  Intel Mobile Communications GmbH
   7  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   8  * Copyright (C) 2018-2024 Intel Corporation
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/fips.h>
  18 #include <linux/if_ether.h>
  19 #include <net/cfg80211.h>
  20 #include "ieee80211_i.h"
  21 #include "driver-ops.h"
  22 #include "rate.h"
  23 #include "mesh.h"
  24 #include "wme.h"
  25
  26 static struct ieee80211_link_data *
  27 ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id,
  28                           bool require_valid)
  29 {
  30         struct ieee80211_link_data *link;
  31
  32         if (link_id < 0) {
  33                 /*
  34                  * For keys, if sdata is not an MLD, we might not use
  35                  * the return value at all (if it's not a pairwise key),
  36                  * so in that case (require_valid==false) don't error.
  37                  */
  38                 if (require_valid && ieee80211_vif_is_mld(&sdata->vif))
  39                         return ERR_PTR(-EINVAL);
  40
  41                 return &sdata->deflink;
  42         }
  43
  44         link = sdata_dereference(sdata->link[link_id], sdata);
  45         if (!link)
  46                 return ERR_PTR(-ENOLINK);
  47         return link;
  48 }
  49
  50 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  51                                          struct vif_params *params)
  52 {
  53         bool mu_mimo_groups = false;
  54         bool mu_mimo_follow = false;
  55
  56         if (params->vht_mumimo_groups) {
  57                 u64 membership;
  58
  59                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  60
  61                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  62                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  63                 memcpy(sdata->vif.bss_conf.mu_group.position,
  64                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  65                        WLAN_USER_POSITION_LEN);
  66                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
  67                                                   BSS_CHANGED_MU_GROUPS);
  68                 /* don't care about endianness - just check for 0 */
  69                 memcpy(&membership, params->vht_mumimo_groups,
  70                        WLAN_MEMBERSHIP_LEN);
  71                 mu_mimo_groups = membership != 0;
  72         }
  73
  74         if (params->vht_mumimo_follow_addr) {
  75                 mu_mimo_follow =
  76                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  77                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  78                                 params->vht_mumimo_follow_addr);
  79         }
  80
  81         sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  82 }
  83
  84 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  85                                      struct vif_params *params)
  86 {
  87         struct ieee80211_local *local = sdata->local;
  88         struct ieee80211_sub_if_data *monitor_sdata;
  89
  90         /* check flags first */
  91         if (params->flags && ieee80211_sdata_running(sdata)) {
  92                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  93
  94                 /*
  95                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  96                  * MONITOR_FLAG_ACTIVE to be changed while the
  97                  * interface is up.
  98                  * Else we would need to add a lot of cruft
  99                  * to update everything:
 100                  *      cooked_mntrs, monitor and all fif_* counters
 101                  *      reconfigure hardware
 102                  */
 103                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
 104                         return -EBUSY;
 105         }
 106
 107         /* also validate MU-MIMO change */
 108         monitor_sdata = wiphy_dereference(local->hw.wiphy,
 109                                           local->monitor_sdata);
 110
 111         if (!monitor_sdata &&
 112             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
 113                 return -EOPNOTSUPP;
 114
 115         /* apply all changes now - no failures allowed */
 116
 117         if (monitor_sdata)
 118                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
 119
 120         if (params->flags) {
 121                 if (ieee80211_sdata_running(sdata)) {
 122                         ieee80211_adjust_monitor_flags(sdata, -1);
 123                         sdata->u.mntr.flags = params->flags;
 124                         ieee80211_adjust_monitor_flags(sdata, 1);
 125
 126                         ieee80211_configure_filter(local);
 127                 } else {
 128                         /*
 129                          * Because the interface is down, ieee80211_do_stop
 130                          * and ieee80211_do_open take care of "everything"
 131                          * mentioned in the comment above.
 132                          */
 133                         sdata->u.mntr.flags = params->flags;
 134                 }
 135         }
 136
 137         return 0;
 138 }
 139
 140 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
 141                                            struct cfg80211_mbssid_config params,
 142                                            struct ieee80211_bss_conf *link_conf)
 143 {
 144         struct ieee80211_sub_if_data *tx_sdata;
 145
 146         sdata->vif.mbssid_tx_vif = NULL;
 147         link_conf->bssid_index = 0;
 148         link_conf->nontransmitted = false;
 149         link_conf->ema_ap = false;
 150         link_conf->bssid_indicator = 0;
 151
 152         if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
 153                 return -EINVAL;
 154
 155         tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
 156         if (!tx_sdata)
 157                 return -EINVAL;
 158
 159         if (tx_sdata == sdata) {
 160                 sdata->vif.mbssid_tx_vif = &sdata->vif;
 161         } else {
 162                 sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
 163                 link_conf->nontransmitted = true;
 164                 link_conf->bssid_index = params.index;
 165         }
 166         if (params.ema)
 167                 link_conf->ema_ap = true;
 168
 169         return 0;
 170 }
 171
 172 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 173                                                 const char *name,
 174                                                 unsigned char name_assign_type,
 175                                                 enum nl80211_iftype type,
 176                                                 struct vif_params *params)
 177 {
 178         struct ieee80211_local *local = wiphy_priv(wiphy);
 179         struct wireless_dev *wdev;
 180         struct ieee80211_sub_if_data *sdata;
 181         int err;
 182
 183         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 184         if (err)
 185                 return ERR_PTR(err);
 186
 187         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 188
 189         if (type == NL80211_IFTYPE_MONITOR) {
 190                 err = ieee80211_set_mon_options(sdata, params);
 191                 if (err) {
 192                         ieee80211_if_remove(sdata);
 193                         return NULL;
 194                 }
 195         }
 196
 197         return wdev;
 198 }
 199
 200 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 201 {
 202         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 203
 204         return 0;
 205 }
 206
 207 static int ieee80211_change_iface(struct wiphy *wiphy,
 208                                   struct net_device *dev,
 209                                   enum nl80211_iftype type,
 210                                   struct vif_params *params)
 211 {
 212         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 213         struct ieee80211_local *local = sdata->local;
 214         struct sta_info *sta;
 215         int ret;
 216
 217         lockdep_assert_wiphy(local->hw.wiphy);
 218
 219         ret = ieee80211_if_change_type(sdata, type);
 220         if (ret)
 221                 return ret;
 222
 223         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 224                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 225                 ieee80211_check_fast_rx_iface(sdata);
 226         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 227                 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 228
 229                 if (params->use_4addr == ifmgd->use_4addr)
 230                         return 0;
 231
 232                 /* FIXME: no support for 4-addr MLO yet */
 233                 if (ieee80211_vif_is_mld(&sdata->vif))
 234                         return -EOPNOTSUPP;
 235
 236                 sdata->u.mgd.use_4addr = params->use_4addr;
 237                 if (!ifmgd->associated)
 238                         return 0;
 239
 240                 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
 241                 if (sta)
 242                         drv_sta_set_4addr(local, sdata, &sta->sta,
 243                                           params->use_4addr);
 244
 245                 if (params->use_4addr)
 246                         ieee80211_send_4addr_nullfunc(local, sdata);
 247         }
 248
 249         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 250                 ret = ieee80211_set_mon_options(sdata, params);
 251                 if (ret)
 252                         return ret;
 253         }
 254
 255         return 0;
 256 }
 257
 258 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 259                                       struct wireless_dev *wdev)
 260 {
 261         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 262         int ret;
 263
 264         lockdep_assert_wiphy(sdata->local->hw.wiphy);
 265
 266         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 267         if (ret < 0)
 268                 return ret;
 269
 270         return ieee80211_do_open(wdev, true);
 271 }
 272
 273 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 274                                       struct wireless_dev *wdev)
 275 {
 276         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 277 }
 278
 279 static int ieee80211_start_nan(struct wiphy *wiphy,
 280                                struct wireless_dev *wdev,
 281                                struct cfg80211_nan_conf *conf)
 282 {
 283         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 284         int ret;
 285
 286         lockdep_assert_wiphy(sdata->local->hw.wiphy);
 287
 288         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 289         if (ret < 0)
 290                 return ret;
 291
 292         ret = ieee80211_do_open(wdev, true);
 293         if (ret)
 294                 return ret;
 295
 296         ret = drv_start_nan(sdata->local, sdata, conf);
 297         if (ret)
 298                 ieee80211_sdata_stop(sdata);
 299
 300         sdata->u.nan.conf = *conf;
 301
 302         return ret;
 303 }
 304
 305 static void ieee80211_stop_nan(struct wiphy *wiphy,
 306                                struct wireless_dev *wdev)
 307 {
 308         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 309
 310         drv_stop_nan(sdata->local, sdata);
 311         ieee80211_sdata_stop(sdata);
 312 }
 313
 314 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 315                                      struct wireless_dev *wdev,
 316                                      struct cfg80211_nan_conf *conf,
 317                                      u32 changes)
 318 {
 319         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 320         struct cfg80211_nan_conf new_conf;
 321         int ret = 0;
 322
 323         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 324                 return -EOPNOTSUPP;
 325
 326         if (!ieee80211_sdata_running(sdata))
 327                 return -ENETDOWN;
 328
 329         new_conf = sdata->u.nan.conf;
 330
 331         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 332                 new_conf.master_pref = conf->master_pref;
 333
 334         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 335                 new_conf.bands = conf->bands;
 336
 337         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 338         if (!ret)
 339                 sdata->u.nan.conf = new_conf;
 340
 341         return ret;
 342 }
 343
 344 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 345                                   struct wireless_dev *wdev,
 346                                   struct cfg80211_nan_func *nan_func)
 347 {
 348         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 349         int ret;
 350
 351         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 352                 return -EOPNOTSUPP;
 353
 354         if (!ieee80211_sdata_running(sdata))
 355                 return -ENETDOWN;
 356
 357         spin_lock_bh(&sdata->u.nan.func_lock);
 358
 359         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 360                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 361                         GFP_ATOMIC);
 362         spin_unlock_bh(&sdata->u.nan.func_lock);
 363
 364         if (ret < 0)
 365                 return ret;
 366
 367         nan_func->instance_id = ret;
 368
 369         WARN_ON(nan_func->instance_id == 0);
 370
 371         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 372         if (ret) {
 373                 spin_lock_bh(&sdata->u.nan.func_lock);
 374                 idr_remove(&sdata->u.nan.function_inst_ids,
 375                            nan_func->instance_id);
 376                 spin_unlock_bh(&sdata->u.nan.func_lock);
 377         }
 378
 379         return ret;
 380 }
 381
 382 static struct cfg80211_nan_func *
 383 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 384                                   u64 cookie)
 385 {
 386         struct cfg80211_nan_func *func;
 387         int id;
 388
 389         lockdep_assert_held(&sdata->u.nan.func_lock);
 390
 391         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 392                 if (func->cookie == cookie)
 393                         return func;
 394         }
 395
 396         return NULL;
 397 }
 398
 399 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 400                                   struct wireless_dev *wdev, u64 cookie)
 401 {
 402         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 403         struct cfg80211_nan_func *func;
 404         u8 instance_id = 0;
 405
 406         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 407             !ieee80211_sdata_running(sdata))
 408                 return;
 409
 410         spin_lock_bh(&sdata->u.nan.func_lock);
 411
 412         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 413         if (func)
 414                 instance_id = func->instance_id;
 415
 416         spin_unlock_bh(&sdata->u.nan.func_lock);
 417
 418         if (instance_id)
 419                 drv_del_nan_func(sdata->local, sdata, instance_id);
 420 }
 421
 422 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 423                                   struct net_device *dev,
 424                                   u16 noack_map)
 425 {
 426         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 427
 428         sdata->noack_map = noack_map;
 429
 430         ieee80211_check_fast_xmit_iface(sdata);
 431
 432         return 0;
 433 }
 434
 435 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
 436                             const u8 *mac_addr, u8 key_idx)
 437 {
 438         struct ieee80211_local *local = sdata->local;
 439         struct ieee80211_key *key;
 440         struct sta_info *sta;
 441         int ret = -EINVAL;
 442
 443         if (!wiphy_ext_feature_isset(local->hw.wiphy,
 444                                      NL80211_EXT_FEATURE_EXT_KEY_ID))
 445                 return -EINVAL;
 446
 447         sta = sta_info_get_bss(sdata, mac_addr);
 448
 449         if (!sta)
 450                 return -EINVAL;
 451
 452         if (sta->ptk_idx == key_idx)
 453                 return 0;
 454
 455         key = wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]);
 456
 457         if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
 458                 ret = ieee80211_set_tx_key(key);
 459
 460         return ret;
 461 }
 462
 463 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 464                              int link_id, u8 key_idx, bool pairwise,
 465                              const u8 *mac_addr, struct key_params *params)
 466 {
 467         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 468         struct ieee80211_link_data *link =
 469                 ieee80211_link_or_deflink(sdata, link_id, false);
 470         struct ieee80211_local *local = sdata->local;
 471         struct sta_info *sta = NULL;
 472         struct ieee80211_key *key;
 473         int err;
 474
 475         lockdep_assert_wiphy(local->hw.wiphy);
 476
 477         if (!ieee80211_sdata_running(sdata))
 478                 return -ENETDOWN;
 479
 480         if (IS_ERR(link))
 481                 return PTR_ERR(link);
 482
 483         if (pairwise && params->mode == NL80211_KEY_SET_TX)
 484                 return ieee80211_set_tx(sdata, mac_addr, key_idx);
 485
 486         /* reject WEP and TKIP keys if WEP failed to initialize */
 487         switch (params->cipher) {
 488         case WLAN_CIPHER_SUITE_WEP40:
 489         case WLAN_CIPHER_SUITE_TKIP:
 490         case WLAN_CIPHER_SUITE_WEP104:
 491                 if (link_id >= 0)
 492                         return -EINVAL;
 493                 if (WARN_ON_ONCE(fips_enabled))
 494                         return -EINVAL;
 495                 break;
 496         default:
 497                 break;
 498         }
 499
 500         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 501                                   params->key, params->seq_len, params->seq);
 502         if (IS_ERR(key))
 503                 return PTR_ERR(key);
 504
 505         key->conf.link_id = link_id;
 506
 507         if (pairwise)
 508                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 509
 510         if (params->mode == NL80211_KEY_NO_TX)
 511                 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
 512
 513         if (mac_addr) {
 514                 sta = sta_info_get_bss(sdata, mac_addr);
 515                 /*
 516                  * The ASSOC test makes sure the driver is ready to
 517                  * receive the key. When wpa_supplicant has roamed
 518                  * using FT, it attempts to set the key before
 519                  * association has completed, this rejects that attempt
 520                  * so it will set the key again after association.
 521                  *
 522                  * TODO: accept the key if we have a station entry and
 523                  *       add it to the device after the station.
 524                  */
 525                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 526                         ieee80211_key_free_unused(key);
 527                         return -ENOENT;
 528                 }
 529         }
 530
 531         switch (sdata->vif.type) {
 532         case NL80211_IFTYPE_STATION:
 533                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 534                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 535                 break;
 536         case NL80211_IFTYPE_AP:
 537         case NL80211_IFTYPE_AP_VLAN:
 538                 /* Keys without a station are used for TX only */
 539                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 540                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 541                 break;
 542         case NL80211_IFTYPE_ADHOC:
 543                 /* no MFP (yet) */
 544                 break;
 545         case NL80211_IFTYPE_MESH_POINT:
 546 #ifdef CONFIG_MAC80211_MESH
 547                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 548                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 549                 break;
 550 #endif
 551         case NL80211_IFTYPE_WDS:
 552         case NL80211_IFTYPE_MONITOR:
 553         case NL80211_IFTYPE_P2P_DEVICE:
 554         case NL80211_IFTYPE_NAN:
 555         case NL80211_IFTYPE_UNSPECIFIED:
 556         case NUM_NL80211_IFTYPES:
 557         case NL80211_IFTYPE_P2P_CLIENT:
 558         case NL80211_IFTYPE_P2P_GO:
 559         case NL80211_IFTYPE_OCB:
 560                 /* shouldn't happen */
 561                 WARN_ON_ONCE(1);
 562                 break;
 563         }
 564
 565         err = ieee80211_key_link(key, link, sta);
 566         /* KRACK protection, shouldn't happen but just silently accept key */
 567         if (err == -EALREADY)
 568                 err = 0;
 569
 570         return err;
 571 }
 572
 573 static struct ieee80211_key *
 574 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
 575                      u8 key_idx, bool pairwise, const u8 *mac_addr)
 576 {
 577         struct ieee80211_local *local __maybe_unused = sdata->local;
 578         struct ieee80211_link_data *link = &sdata->deflink;
 579         struct ieee80211_key *key;
 580
 581         if (link_id >= 0) {
 582                 link = sdata_dereference(sdata->link[link_id], sdata);
 583                 if (!link)
 584                         return NULL;
 585         }
 586
 587         if (mac_addr) {
 588                 struct sta_info *sta;
 589                 struct link_sta_info *link_sta;
 590
 591                 sta = sta_info_get_bss(sdata, mac_addr);
 592                 if (!sta)
 593                         return NULL;
 594
 595                 if (link_id >= 0) {
 596                         link_sta = rcu_dereference_check(sta->link[link_id],
 597                                                          lockdep_is_held(&local->hw.wiphy->mtx));
 598                         if (!link_sta)
 599                                 return NULL;
 600                 } else {
 601                         link_sta = &sta->deflink;
 602                 }
 603
 604                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 605                         return wiphy_dereference(local->hw.wiphy,
 606                                                  sta->ptk[key_idx]);
 607
 608                 if (!pairwise &&
 609                     key_idx < NUM_DEFAULT_KEYS +
 610                               NUM_DEFAULT_MGMT_KEYS +
 611                               NUM_DEFAULT_BEACON_KEYS)
 612                         return wiphy_dereference(local->hw.wiphy,
 613                                                  link_sta->gtk[key_idx]);
 614
 615                 return NULL;
 616         }
 617
 618         if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 619                 return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]);
 620
 621         key = wiphy_dereference(local->hw.wiphy, link->gtk[key_idx]);
 622         if (key)
 623                 return key;
 624
 625         /* or maybe it was a WEP key */
 626         if (key_idx < NUM_DEFAULT_KEYS)
 627                 return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]);
 628
 629         return NULL;
 630 }
 631
 632 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 633                              int link_id, u8 key_idx, bool pairwise,
 634                              const u8 *mac_addr)
 635 {
 636         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 637         struct ieee80211_local *local = sdata->local;
 638         struct ieee80211_key *key;
 639
 640         lockdep_assert_wiphy(local->hw.wiphy);
 641
 642         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 643         if (!key)
 644                 return -ENOENT;
 645
 646         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 647
 648         return 0;
 649 }
 650
 651 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 652                              int link_id, u8 key_idx, bool pairwise,
 653                              const u8 *mac_addr, void *cookie,
 654                              void (*callback)(void *cookie,
 655                                               struct key_params *params))
 656 {
 657         struct ieee80211_sub_if_data *sdata;
 658         u8 seq[6] = {0};
 659         struct key_params params;
 660         struct ieee80211_key *key;
 661         u64 pn64;
 662         u32 iv32;
 663         u16 iv16;
 664         int err = -ENOENT;
 665         struct ieee80211_key_seq kseq = {};
 666
 667         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 668
 669         rcu_read_lock();
 670
 671         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 672         if (!key)
 673                 goto out;
 674
 675         memset(&params, 0, sizeof(params));
 676
 677         params.cipher = key->conf.cipher;
 678
 679         switch (key->conf.cipher) {
 680         case WLAN_CIPHER_SUITE_TKIP:
 681                 pn64 = atomic64_read(&key->conf.tx_pn);
 682                 iv32 = TKIP_PN_TO_IV32(pn64);
 683                 iv16 = TKIP_PN_TO_IV16(pn64);
 684
 685                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 686                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 687                         drv_get_key_seq(sdata->local, key, &kseq);
 688                         iv32 = kseq.tkip.iv32;
 689                         iv16 = kseq.tkip.iv16;
 690                 }
 691
 692                 seq[0] = iv16 & 0xff;
 693                 seq[1] = (iv16 >> 8) & 0xff;
 694                 seq[2] = iv32 & 0xff;
 695                 seq[3] = (iv32 >> 8) & 0xff;
 696                 seq[4] = (iv32 >> 16) & 0xff;
 697                 seq[5] = (iv32 >> 24) & 0xff;
 698                 params.seq = seq;
 699                 params.seq_len = 6;
 700                 break;
 701         case WLAN_CIPHER_SUITE_CCMP:
 702         case WLAN_CIPHER_SUITE_CCMP_256:
 703         case WLAN_CIPHER_SUITE_AES_CMAC:
 704         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 705                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 706                              offsetof(typeof(kseq), aes_cmac));
 707                 fallthrough;
 708         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 709         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 710                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 711                              offsetof(typeof(kseq), aes_gmac));
 712                 fallthrough;
 713         case WLAN_CIPHER_SUITE_GCMP:
 714         case WLAN_CIPHER_SUITE_GCMP_256:
 715                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 716                              offsetof(typeof(kseq), gcmp));
 717
 718                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 719                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 720                         drv_get_key_seq(sdata->local, key, &kseq);
 721                         memcpy(seq, kseq.ccmp.pn, 6);
 722                 } else {
 723                         pn64 = atomic64_read(&key->conf.tx_pn);
 724                         seq[0] = pn64;
 725                         seq[1] = pn64 >> 8;
 726                         seq[2] = pn64 >> 16;
 727                         seq[3] = pn64 >> 24;
 728                         seq[4] = pn64 >> 32;
 729                         seq[5] = pn64 >> 40;
 730                 }
 731                 params.seq = seq;
 732                 params.seq_len = 6;
 733                 break;
 734         default:
 735                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 736                         break;
 737                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 738                         break;
 739                 drv_get_key_seq(sdata->local, key, &kseq);
 740                 params.seq = kseq.hw.seq;
 741                 params.seq_len = kseq.hw.seq_len;
 742                 break;
 743         }
 744
 745         params.key = key->conf.key;
 746         params.key_len = key->conf.keylen;
 747
 748         callback(cookie, &params);
 749         err = 0;
 750
 751  out:
 752         rcu_read_unlock();
 753         return err;
 754 }
 755
 756 static int ieee80211_config_default_key(struct wiphy *wiphy,
 757                                         struct net_device *dev,
 758                                         int link_id, u8 key_idx, bool uni,
 759                                         bool multi)
 760 {
 761         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 762         struct ieee80211_link_data *link =
 763                 ieee80211_link_or_deflink(sdata, link_id, false);
 764
 765         if (IS_ERR(link))
 766                 return PTR_ERR(link);
 767
 768         ieee80211_set_default_key(link, key_idx, uni, multi);
 769
 770         return 0;
 771 }
 772
 773 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 774                                              struct net_device *dev,
 775                                              int link_id, u8 key_idx)
 776 {
 777         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 778         struct ieee80211_link_data *link =
 779                 ieee80211_link_or_deflink(sdata, link_id, true);
 780
 781         if (IS_ERR(link))
 782                 return PTR_ERR(link);
 783
 784         ieee80211_set_default_mgmt_key(link, key_idx);
 785
 786         return 0;
 787 }
 788
 789 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
 790                                                struct net_device *dev,
 791                                                int link_id, u8 key_idx)
 792 {
 793         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 794         struct ieee80211_link_data *link =
 795                 ieee80211_link_or_deflink(sdata, link_id, true);
 796
 797         if (IS_ERR(link))
 798                 return PTR_ERR(link);
 799
 800         ieee80211_set_default_beacon_key(link, key_idx);
 801
 802         return 0;
 803 }
 804
 805 void sta_set_rate_info_tx(struct sta_info *sta,
 806                           const struct ieee80211_tx_rate *rate,
 807                           struct rate_info *rinfo)
 808 {
 809         rinfo->flags = 0;
 810         if (rate->flags & IEEE80211_TX_RC_MCS) {
 811                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 812                 rinfo->mcs = rate->idx;
 813         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 814                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 815                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 816                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 817         } else {
 818                 struct ieee80211_supported_band *sband;
 819
 820                 sband = ieee80211_get_sband(sta->sdata);
 821                 WARN_ON_ONCE(sband && !sband->bitrates);
 822                 if (sband && sband->bitrates)
 823                         rinfo->legacy = sband->bitrates[rate->idx].bitrate;
 824         }
 825         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 826                 rinfo->bw = RATE_INFO_BW_40;
 827         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 828                 rinfo->bw = RATE_INFO_BW_80;
 829         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 830                 rinfo->bw = RATE_INFO_BW_160;
 831         else
 832                 rinfo->bw = RATE_INFO_BW_20;
 833         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 834                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 835 }
 836
 837 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 838                                   int idx, u8 *mac, struct station_info *sinfo)
 839 {
 840         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 841         struct ieee80211_local *local = sdata->local;
 842         struct sta_info *sta;
 843         int ret = -ENOENT;
 844
 845         lockdep_assert_wiphy(local->hw.wiphy);
 846
 847         sta = sta_info_get_by_idx(sdata, idx);
 848         if (sta) {
 849                 ret = 0;
 850                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 851                 sta_set_sinfo(sta, sinfo, true);
 852         }
 853
 854         return ret;
 855 }
 856
 857 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 858                                  int idx, struct survey_info *survey)
 859 {
 860         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 861
 862         return drv_get_survey(local, idx, survey);
 863 }
 864
 865 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 866                                  const u8 *mac, struct station_info *sinfo)
 867 {
 868         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 869         struct ieee80211_local *local = sdata->local;
 870         struct sta_info *sta;
 871         int ret = -ENOENT;
 872
 873         lockdep_assert_wiphy(local->hw.wiphy);
 874
 875         sta = sta_info_get_bss(sdata, mac);
 876         if (sta) {
 877                 ret = 0;
 878                 sta_set_sinfo(sta, sinfo, true);
 879         }
 880
 881         return ret;
 882 }
 883
 884 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 885                                          struct cfg80211_chan_def *chandef)
 886 {
 887         struct ieee80211_local *local = wiphy_priv(wiphy);
 888         struct ieee80211_sub_if_data *sdata;
 889         struct ieee80211_chan_req chanreq = { .oper = *chandef };
 890         int ret;
 891
 892         lockdep_assert_wiphy(local->hw.wiphy);
 893
 894         if (cfg80211_chandef_identical(&local->monitor_chanreq.oper,
 895                                        &chanreq.oper))
 896                 return 0;
 897
 898         sdata = wiphy_dereference(local->hw.wiphy,
 899                                   local->monitor_sdata);
 900         if (!sdata)
 901                 goto done;
 902
 903         if (cfg80211_chandef_identical(&sdata->vif.bss_conf.chanreq.oper,
 904                                        &chanreq.oper))
 905                 return 0;
 906
 907         ieee80211_link_release_channel(&sdata->deflink);
 908         ret = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
 909                                          IEEE80211_CHANCTX_EXCLUSIVE);
 910         if (ret)
 911                 return ret;
 912 done:
 913         local->monitor_chanreq = chanreq;
 914         return 0;
 915 }
 916
 917 static int
 918 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 919                          const u8 *resp, size_t resp_len,
 920                          const struct ieee80211_csa_settings *csa,
 921                          const struct ieee80211_color_change_settings *cca,
 922                          struct ieee80211_link_data *link)
 923 {
 924         struct probe_resp *new, *old;
 925
 926         if (!resp || !resp_len)
 927                 return 1;
 928
 929         old = sdata_dereference(link->u.ap.probe_resp, sdata);
 930
 931         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 932         if (!new)
 933                 return -ENOMEM;
 934
 935         new->len = resp_len;
 936         memcpy(new->data, resp, resp_len);
 937
 938         if (csa)
 939                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
 940                        csa->n_counter_offsets_presp *
 941                        sizeof(new->cntdwn_counter_offsets[0]));
 942         else if (cca)
 943                 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
 944
 945         rcu_assign_pointer(link->u.ap.probe_resp, new);
 946         if (old)
 947                 kfree_rcu(old, rcu_head);
 948
 949         return 0;
 950 }
 951
 952 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
 953                                         struct cfg80211_fils_discovery *params,
 954                                         struct ieee80211_link_data *link,
 955                                         struct ieee80211_bss_conf *link_conf,
 956                                         u64 *changed)
 957 {
 958         struct fils_discovery_data *new, *old = NULL;
 959         struct ieee80211_fils_discovery *fd;
 960
 961         if (!params->update)
 962                 return 0;
 963
 964         fd = &link_conf->fils_discovery;
 965         fd->min_interval = params->min_interval;
 966         fd->max_interval = params->max_interval;
 967
 968         old = sdata_dereference(link->u.ap.fils_discovery, sdata);
 969         if (old)
 970                 kfree_rcu(old, rcu_head);
 971
 972         if (params->tmpl && params->tmpl_len) {
 973                 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
 974                 if (!new)
 975                         return -ENOMEM;
 976                 new->len = params->tmpl_len;
 977                 memcpy(new->data, params->tmpl, params->tmpl_len);
 978                 rcu_assign_pointer(link->u.ap.fils_discovery, new);
 979         } else {
 980                 RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
 981         }
 982
 983         *changed |= BSS_CHANGED_FILS_DISCOVERY;
 984         return 0;
 985 }
 986
 987 static int
 988 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
 989                                      struct cfg80211_unsol_bcast_probe_resp *params,
 990                                      struct ieee80211_link_data *link,
 991                                      struct ieee80211_bss_conf *link_conf,
 992                                      u64 *changed)
 993 {
 994         struct unsol_bcast_probe_resp_data *new, *old = NULL;
 995
 996         if (!params->update)
 997                 return 0;
 998
 999         link_conf->unsol_bcast_probe_resp_interval = params->interval;
1000
1001         old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1002         if (old)
1003                 kfree_rcu(old, rcu_head);
1004
1005         if (params->tmpl && params->tmpl_len) {
1006                 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1007                 if (!new)
1008                         return -ENOMEM;
1009                 new->len = params->tmpl_len;
1010                 memcpy(new->data, params->tmpl, params->tmpl_len);
1011                 rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1012         } else {
1013                 RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1014         }
1015
1016         *changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1017         return 0;
1018 }
1019
1020 static int ieee80211_set_ftm_responder_params(
1021                                 struct ieee80211_sub_if_data *sdata,
1022                                 const u8 *lci, size_t lci_len,
1023                                 const u8 *civicloc, size_t civicloc_len,
1024                                 struct ieee80211_bss_conf *link_conf)
1025 {
1026         struct ieee80211_ftm_responder_params *new, *old;
1027         u8 *pos;
1028         int len;
1029
1030         if (!lci_len && !civicloc_len)
1031                 return 0;
1032
1033         old = link_conf->ftmr_params;
1034         len = lci_len + civicloc_len;
1035
1036         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1037         if (!new)
1038                 return -ENOMEM;
1039
1040         pos = (u8 *)(new + 1);
1041         if (lci_len) {
1042                 new->lci_len = lci_len;
1043                 new->lci = pos;
1044                 memcpy(pos, lci, lci_len);
1045                 pos += lci_len;
1046         }
1047
1048         if (civicloc_len) {
1049                 new->civicloc_len = civicloc_len;
1050                 new->civicloc = pos;
1051                 memcpy(pos, civicloc, civicloc_len);
1052                 pos += civicloc_len;
1053         }
1054
1055         link_conf->ftmr_params = new;
1056         kfree(old);
1057
1058         return 0;
1059 }
1060
1061 static int
1062 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1063                              struct cfg80211_mbssid_elems *src)
1064 {
1065         int i, offset = 0;
1066
1067         for (i = 0; i < src->cnt; i++) {
1068                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1069                 dst->elem[i].len = src->elem[i].len;
1070                 dst->elem[i].data = pos + offset;
1071                 offset += dst->elem[i].len;
1072         }
1073         dst->cnt = src->cnt;
1074
1075         return offset;
1076 }
1077
1078 static int
1079 ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst,
1080                           struct cfg80211_rnr_elems *src)
1081 {
1082         int i, offset = 0;
1083
1084         for (i = 0; i < src->cnt; i++) {
1085                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1086                 dst->elem[i].len = src->elem[i].len;
1087                 dst->elem[i].data = pos + offset;
1088                 offset += dst->elem[i].len;
1089         }
1090         dst->cnt = src->cnt;
1091
1092         return offset;
1093 }
1094
1095 static int
1096 ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1097                         struct ieee80211_link_data *link,
1098                         struct cfg80211_beacon_data *params,
1099                         const struct ieee80211_csa_settings *csa,
1100                         const struct ieee80211_color_change_settings *cca,
1101                         u64 *changed)
1102 {
1103         struct cfg80211_mbssid_elems *mbssid = NULL;
1104         struct cfg80211_rnr_elems *rnr = NULL;
1105         struct beacon_data *new, *old;
1106         int new_head_len, new_tail_len;
1107         int size, err;
1108         u64 _changed = BSS_CHANGED_BEACON;
1109         struct ieee80211_bss_conf *link_conf = link->conf;
1110
1111         old = sdata_dereference(link->u.ap.beacon, sdata);
1112
1113         /* Need to have a beacon head if we don't have one yet */
1114         if (!params->head && !old)
1115                 return -EINVAL;
1116
1117         /* new or old head? */
1118         if (params->head)
1119                 new_head_len = params->head_len;
1120         else
1121                 new_head_len = old->head_len;
1122
1123         /* new or old tail? */
1124         if (params->tail || !old)
1125                 /* params->tail_len will be zero for !params->tail */
1126                 new_tail_len = params->tail_len;
1127         else
1128                 new_tail_len = old->tail_len;
1129
1130         size = sizeof(*new) + new_head_len + new_tail_len;
1131
1132         /* new or old multiple BSSID elements? */
1133         if (params->mbssid_ies) {
1134                 mbssid = params->mbssid_ies;
1135                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1136                 if (params->rnr_ies) {
1137                         rnr = params->rnr_ies;
1138                         size += struct_size(new->rnr_ies, elem, rnr->cnt);
1139                 }
1140                 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1141                                                         mbssid->cnt);
1142         } else if (old && old->mbssid_ies) {
1143                 mbssid = old->mbssid_ies;
1144                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1145                 if (old && old->rnr_ies) {
1146                         rnr = old->rnr_ies;
1147                         size += struct_size(new->rnr_ies, elem, rnr->cnt);
1148                 }
1149                 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1150                                                         mbssid->cnt);
1151         }
1152
1153         new = kzalloc(size, GFP_KERNEL);
1154         if (!new)
1155                 return -ENOMEM;
1156
1157         /* start filling the new info now */
1158
1159         /*
1160          * pointers go into the block we allocated,
1161          * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies
1162          */
1163         new->head = ((u8 *) new) + sizeof(*new);
1164         new->tail = new->head + new_head_len;
1165         new->head_len = new_head_len;
1166         new->tail_len = new_tail_len;
1167         /* copy in optional mbssid_ies */
1168         if (mbssid) {
1169                 u8 *pos = new->tail + new->tail_len;
1170
1171                 new->mbssid_ies = (void *)pos;
1172                 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1173                 pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies,
1174                                                     mbssid);
1175                 if (rnr) {
1176                         new->rnr_ies = (void *)pos;
1177                         pos += struct_size(new->rnr_ies, elem, rnr->cnt);
1178                         ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr);
1179                 }
1180                 /* update bssid_indicator */
1181                 link_conf->bssid_indicator =
1182                         ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1183         }
1184
1185         if (csa) {
1186                 new->cntdwn_current_counter = csa->count;
1187                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1188                        csa->n_counter_offsets_beacon *
1189                        sizeof(new->cntdwn_counter_offsets[0]));
1190         } else if (cca) {
1191                 new->cntdwn_current_counter = cca->count;
1192                 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1193         }
1194
1195         /* copy in head */
1196         if (params->head)
1197                 memcpy(new->head, params->head, new_head_len);
1198         else
1199                 memcpy(new->head, old->head, new_head_len);
1200
1201         /* copy in optional tail */
1202         if (params->tail)
1203                 memcpy(new->tail, params->tail, new_tail_len);
1204         else
1205                 if (old)
1206                         memcpy(new->tail, old->tail, new_tail_len);
1207
1208         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1209                                        params->probe_resp_len, csa, cca, link);
1210         if (err < 0) {
1211                 kfree(new);
1212                 return err;
1213         }
1214         if (err == 0)
1215                 _changed |= BSS_CHANGED_AP_PROBE_RESP;
1216
1217         if (params->ftm_responder != -1) {
1218                 link_conf->ftm_responder = params->ftm_responder;
1219                 err = ieee80211_set_ftm_responder_params(sdata,
1220                                                          params->lci,
1221                                                          params->lci_len,
1222                                                          params->civicloc,
1223                                                          params->civicloc_len,
1224                                                          link_conf);
1225
1226                 if (err < 0) {
1227                         kfree(new);
1228                         return err;
1229                 }
1230
1231                 _changed |= BSS_CHANGED_FTM_RESPONDER;
1232         }
1233
1234         rcu_assign_pointer(link->u.ap.beacon, new);
1235         sdata->u.ap.active = true;
1236
1237         if (old)
1238                 kfree_rcu(old, rcu_head);
1239
1240         *changed |= _changed;
1241         return 0;
1242 }
1243
1244 static u8 ieee80211_num_beaconing_links(struct ieee80211_sub_if_data *sdata)
1245 {
1246         struct ieee80211_link_data *link;
1247         u8 link_id, num = 0;
1248
1249         if (sdata->vif.type != NL80211_IFTYPE_AP &&
1250             sdata->vif.type != NL80211_IFTYPE_P2P_GO)
1251                 return num;
1252
1253         if (!sdata->vif.valid_links)
1254                 return num;
1255
1256         for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
1257                 link = sdata_dereference(sdata->link[link_id], sdata);
1258                 if (!link)
1259                         continue;
1260
1261                 if (sdata_dereference(link->u.ap.beacon, sdata))
1262                         num++;
1263         }
1264
1265         return num;
1266 }
1267
1268 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1269                               struct cfg80211_ap_settings *params)
1270 {
1271         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1272         struct ieee80211_local *local = sdata->local;
1273         struct beacon_data *old;
1274         struct ieee80211_sub_if_data *vlan;
1275         u64 changed = BSS_CHANGED_BEACON_INT |
1276                       BSS_CHANGED_BEACON_ENABLED |
1277                       BSS_CHANGED_BEACON |
1278                       BSS_CHANGED_P2P_PS |
1279                       BSS_CHANGED_TXPOWER |
1280                       BSS_CHANGED_TWT;
1281         int i, err;
1282         int prev_beacon_int;
1283         unsigned int link_id = params->beacon.link_id;
1284         struct ieee80211_link_data *link;
1285         struct ieee80211_bss_conf *link_conf;
1286         struct ieee80211_chan_req chanreq = { .oper = params->chandef };
1287
1288         lockdep_assert_wiphy(local->hw.wiphy);
1289
1290         link = sdata_dereference(sdata->link[link_id], sdata);
1291         if (!link)
1292                 return -ENOLINK;
1293
1294         link_conf = link->conf;
1295
1296         old = sdata_dereference(link->u.ap.beacon, sdata);
1297         if (old)
1298                 return -EALREADY;
1299
1300         if (params->smps_mode != NL80211_SMPS_OFF)
1301                 return -EOPNOTSUPP;
1302
1303         link->smps_mode = IEEE80211_SMPS_OFF;
1304
1305         link->needed_rx_chains = sdata->local->rx_chains;
1306
1307         prev_beacon_int = link_conf->beacon_int;
1308         link_conf->beacon_int = params->beacon_interval;
1309
1310         if (params->ht_cap)
1311                 link_conf->ht_ldpc =
1312                         params->ht_cap->cap_info &
1313                                 cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING);
1314
1315         if (params->vht_cap) {
1316                 link_conf->vht_ldpc =
1317                         params->vht_cap->vht_cap_info &
1318                                 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC);
1319                 link_conf->vht_su_beamformer =
1320                         params->vht_cap->vht_cap_info &
1321                                 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
1322                 link_conf->vht_su_beamformee =
1323                         params->vht_cap->vht_cap_info &
1324                                 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
1325                 link_conf->vht_mu_beamformer =
1326                         params->vht_cap->vht_cap_info &
1327                                 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
1328                 link_conf->vht_mu_beamformee =
1329                         params->vht_cap->vht_cap_info &
1330                                 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
1331         }
1332
1333         if (params->he_cap && params->he_oper) {
1334                 link_conf->he_support = true;
1335                 link_conf->htc_trig_based_pkt_ext =
1336                         le32_get_bits(params->he_oper->he_oper_params,
1337                               IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1338                 link_conf->frame_time_rts_th =
1339                         le32_get_bits(params->he_oper->he_oper_params,
1340                               IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1341                 changed |= BSS_CHANGED_HE_OBSS_PD;
1342
1343                 if (params->beacon.he_bss_color.enabled)
1344                         changed |= BSS_CHANGED_HE_BSS_COLOR;
1345         }
1346
1347         if (params->he_cap) {
1348                 link_conf->he_ldpc =
1349                         params->he_cap->phy_cap_info[1] &
1350                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD;
1351                 link_conf->he_su_beamformer =
1352                         params->he_cap->phy_cap_info[3] &
1353                                 IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER;
1354                 link_conf->he_su_beamformee =
1355                         params->he_cap->phy_cap_info[4] &
1356                                 IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE;
1357                 link_conf->he_mu_beamformer =
1358                         params->he_cap->phy_cap_info[4] &
1359                                 IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
1360                 link_conf->he_full_ul_mumimo =
1361                         params->he_cap->phy_cap_info[2] &
1362                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO;
1363         }
1364
1365         if (params->eht_cap) {
1366                 if (!link_conf->he_support)
1367                         return -EOPNOTSUPP;
1368
1369                 link_conf->eht_support = true;
1370
1371                 link_conf->eht_su_beamformer =
1372                         params->eht_cap->fixed.phy_cap_info[0] &
1373                                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER;
1374                 link_conf->eht_su_beamformee =
1375                         params->eht_cap->fixed.phy_cap_info[0] &
1376                                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
1377                 link_conf->eht_mu_beamformer =
1378                         params->eht_cap->fixed.phy_cap_info[7] &
1379                                 (IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
1380                                  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
1381                                  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ);
1382         } else {
1383                 link_conf->eht_su_beamformer = false;
1384                 link_conf->eht_su_beamformee = false;
1385                 link_conf->eht_mu_beamformer = false;
1386         }
1387
1388         if (sdata->vif.type == NL80211_IFTYPE_AP &&
1389             params->mbssid_config.tx_wdev) {
1390                 err = ieee80211_set_ap_mbssid_options(sdata,
1391                                                       params->mbssid_config,
1392                                                       link_conf);
1393                 if (err)
1394                         return err;
1395         }
1396
1397         err = ieee80211_link_use_channel(link, &chanreq,
1398                                          IEEE80211_CHANCTX_SHARED);
1399         if (!err)
1400                 ieee80211_link_copy_chanctx_to_vlans(link, false);
1401         if (err) {
1402                 link_conf->beacon_int = prev_beacon_int;
1403                 return err;
1404         }
1405
1406         /*
1407          * Apply control port protocol, this allows us to
1408          * not encrypt dynamic WEP control frames.
1409          */
1410         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1411         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1412         sdata->control_port_over_nl80211 =
1413                                 params->crypto.control_port_over_nl80211;
1414         sdata->control_port_no_preauth =
1415                                 params->crypto.control_port_no_preauth;
1416
1417         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1418                 vlan->control_port_protocol =
1419                         params->crypto.control_port_ethertype;
1420                 vlan->control_port_no_encrypt =
1421                         params->crypto.control_port_no_encrypt;
1422                 vlan->control_port_over_nl80211 =
1423                         params->crypto.control_port_over_nl80211;
1424                 vlan->control_port_no_preauth =
1425                         params->crypto.control_port_no_preauth;
1426         }
1427
1428         link_conf->dtim_period = params->dtim_period;
1429         link_conf->enable_beacon = true;
1430         link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1431         link_conf->twt_responder = params->twt_responder;
1432         link_conf->he_obss_pd = params->he_obss_pd;
1433         link_conf->he_bss_color = params->beacon.he_bss_color;
1434         sdata->vif.cfg.s1g = params->chandef.chan->band ==
1435                                   NL80211_BAND_S1GHZ;
1436
1437         sdata->vif.cfg.ssid_len = params->ssid_len;
1438         if (params->ssid_len)
1439                 memcpy(sdata->vif.cfg.ssid, params->ssid,
1440                        params->ssid_len);
1441         link_conf->hidden_ssid =
1442                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1443
1444         memset(&link_conf->p2p_noa_attr, 0,
1445                sizeof(link_conf->p2p_noa_attr));
1446         link_conf->p2p_noa_attr.oppps_ctwindow =
1447                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1448         if (params->p2p_opp_ps)
1449                 link_conf->p2p_noa_attr.oppps_ctwindow |=
1450                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1451
1452         sdata->beacon_rate_set = false;
1453         if (wiphy_ext_feature_isset(local->hw.wiphy,
1454                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1455                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1456                         sdata->beacon_rateidx_mask[i] =
1457                                 params->beacon_rate.control[i].legacy;
1458                         if (sdata->beacon_rateidx_mask[i])
1459                                 sdata->beacon_rate_set = true;
1460                 }
1461         }
1462
1463         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1464                 link_conf->beacon_tx_rate = params->beacon_rate;
1465
1466         err = ieee80211_assign_beacon(sdata, link, &params->beacon, NULL, NULL,
1467                                       &changed);
1468         if (err < 0)
1469                 goto error;
1470
1471         err = ieee80211_set_fils_discovery(sdata, &params->fils_discovery,
1472                                            link, link_conf, &changed);
1473         if (err < 0)
1474                 goto error;
1475
1476         err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1477                                                    &params->unsol_bcast_probe_resp,
1478                                                    link, link_conf, &changed);
1479         if (err < 0)
1480                 goto error;
1481
1482         err = drv_start_ap(sdata->local, sdata, link_conf);
1483         if (err) {
1484                 old = sdata_dereference(link->u.ap.beacon, sdata);
1485
1486                 if (old)
1487                         kfree_rcu(old, rcu_head);
1488                 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1489                 sdata->u.ap.active = false;
1490                 goto error;
1491         }
1492
1493         ieee80211_recalc_dtim(local, sdata);
1494         ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1495         ieee80211_link_info_change_notify(sdata, link, changed);
1496
1497         if (ieee80211_num_beaconing_links(sdata) <= 1)
1498                 netif_carrier_on(dev);
1499
1500         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1501                 netif_carrier_on(vlan->dev);
1502
1503         return 0;
1504
1505 error:
1506         ieee80211_link_release_channel(link);
1507
1508         return err;
1509 }
1510
1511 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1512                                    struct cfg80211_ap_update *params)
1513
1514 {
1515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1516         struct ieee80211_link_data *link;
1517         struct cfg80211_beacon_data *beacon = &params->beacon;
1518         struct beacon_data *old;
1519         int err;
1520         struct ieee80211_bss_conf *link_conf;
1521         u64 changed = 0;
1522
1523         lockdep_assert_wiphy(wiphy);
1524
1525         link = sdata_dereference(sdata->link[beacon->link_id], sdata);
1526         if (!link)
1527                 return -ENOLINK;
1528
1529         link_conf = link->conf;
1530
1531         /* don't allow changing the beacon while a countdown is in place - offset
1532          * of channel switch counter may change
1533          */
1534         if (link_conf->csa_active || link_conf->color_change_active)
1535                 return -EBUSY;
1536
1537         old = sdata_dereference(link->u.ap.beacon, sdata);
1538         if (!old)
1539                 return -ENOENT;
1540
1541         err = ieee80211_assign_beacon(sdata, link, beacon, NULL, NULL,
1542                                       &changed);
1543         if (err < 0)
1544                 return err;
1545
1546         err = ieee80211_set_fils_discovery(sdata, &params->fils_discovery,
1547                                            link, link_conf, &changed);
1548         if (err < 0)
1549                 return err;
1550
1551         err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1552                                                    &params->unsol_bcast_probe_resp,
1553                                                    link, link_conf, &changed);
1554         if (err < 0)
1555                 return err;
1556
1557         if (beacon->he_bss_color_valid &&
1558             beacon->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1559                 link_conf->he_bss_color.enabled = beacon->he_bss_color.enabled;
1560                 changed |= BSS_CHANGED_HE_BSS_COLOR;
1561         }
1562
1563         ieee80211_link_info_change_notify(sdata, link, changed);
1564         return 0;
1565 }
1566
1567 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1568 {
1569         if (!link->u.ap.next_beacon)
1570                 return;
1571
1572         kfree(link->u.ap.next_beacon->mbssid_ies);
1573         kfree(link->u.ap.next_beacon->rnr_ies);
1574         kfree(link->u.ap.next_beacon);
1575         link->u.ap.next_beacon = NULL;
1576 }
1577
1578 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1579                              unsigned int link_id)
1580 {
1581         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1582         struct ieee80211_sub_if_data *vlan;
1583         struct ieee80211_local *local = sdata->local;
1584         struct beacon_data *old_beacon;
1585         struct probe_resp *old_probe_resp;
1586         struct fils_discovery_data *old_fils_discovery;
1587         struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1588         struct cfg80211_chan_def chandef;
1589         struct ieee80211_link_data *link =
1590                 sdata_dereference(sdata->link[link_id], sdata);
1591         struct ieee80211_bss_conf *link_conf = link->conf;
1592         LIST_HEAD(keys);
1593
1594         lockdep_assert_wiphy(local->hw.wiphy);
1595
1596         old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1597         if (!old_beacon)
1598                 return -ENOENT;
1599         old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1600                                            sdata);
1601         old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1602                                                sdata);
1603         old_unsol_bcast_probe_resp =
1604                 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1605                                   sdata);
1606
1607         /* abort any running channel switch or color change */
1608         link_conf->csa_active = false;
1609         link_conf->color_change_active = false;
1610         if (sdata->csa_blocked_tx) {
1611                 ieee80211_wake_vif_queues(local, sdata,
1612                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1613                 sdata->csa_blocked_tx = false;
1614         }
1615
1616         ieee80211_free_next_beacon(link);
1617
1618         /* turn off carrier for this interface and dependent VLANs */
1619         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1620                 netif_carrier_off(vlan->dev);
1621
1622         if (ieee80211_num_beaconing_links(sdata) <= 1)
1623                 netif_carrier_off(dev);
1624
1625         /* remove beacon and probe response */
1626         sdata->u.ap.active = false;
1627         RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1628         RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1629         RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1630         RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1631         kfree_rcu(old_beacon, rcu_head);
1632         if (old_probe_resp)
1633                 kfree_rcu(old_probe_resp, rcu_head);
1634         if (old_fils_discovery)
1635                 kfree_rcu(old_fils_discovery, rcu_head);
1636         if (old_unsol_bcast_probe_resp)
1637                 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1638
1639         kfree(link_conf->ftmr_params);
1640         link_conf->ftmr_params = NULL;
1641
1642         sdata->vif.mbssid_tx_vif = NULL;
1643         link_conf->bssid_index = 0;
1644         link_conf->nontransmitted = false;
1645         link_conf->ema_ap = false;
1646         link_conf->bssid_indicator = 0;
1647
1648         __sta_info_flush(sdata, true, link_id);
1649
1650         ieee80211_remove_link_keys(link, &keys);
1651         if (!list_empty(&keys)) {
1652                 synchronize_net();
1653                 ieee80211_free_key_list(local, &keys);
1654         }
1655
1656         link_conf->enable_beacon = false;
1657         sdata->beacon_rate_set = false;
1658         sdata->vif.cfg.ssid_len = 0;
1659         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1660         ieee80211_link_info_change_notify(sdata, link,
1661                                           BSS_CHANGED_BEACON_ENABLED);
1662
1663         if (sdata->wdev.cac_started) {
1664                 chandef = link_conf->chanreq.oper;
1665                 wiphy_delayed_work_cancel(wiphy, &link->dfs_cac_timer_work);
1666                 cfg80211_cac_event(sdata->dev, &chandef,
1667                                    NL80211_RADAR_CAC_ABORTED,
1668                                    GFP_KERNEL);
1669         }
1670
1671         drv_stop_ap(sdata->local, sdata, link_conf);
1672
1673         /* free all potentially still buffered bcast frames */
1674         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1675         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1676
1677         ieee80211_link_copy_chanctx_to_vlans(link, true);
1678         ieee80211_link_release_channel(link);
1679
1680         return 0;
1681 }
1682
1683 static int sta_apply_auth_flags(struct ieee80211_local *local,
1684                                 struct sta_info *sta,
1685                                 u32 mask, u32 set)
1686 {
1687         int ret;
1688
1689         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1690             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1691             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1692                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1693                 if (ret)
1694                         return ret;
1695         }
1696
1697         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1698             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1699             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1700                 /*
1701                  * When peer becomes associated, init rate control as
1702                  * well. Some drivers require rate control initialized
1703                  * before drv_sta_state() is called.
1704                  */
1705                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1706                         rate_control_rate_init(sta);
1707
1708                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1709                 if (ret)
1710                         return ret;
1711         }
1712
1713         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1714                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1715                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1716                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1717                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1718                 else
1719                         ret = 0;
1720                 if (ret)
1721                         return ret;
1722         }
1723
1724         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1725             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1726             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1727                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1728                 if (ret)
1729                         return ret;
1730         }
1731
1732         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1733             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1734             test_sta_flag(sta, WLAN_STA_AUTH)) {
1735                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1736                 if (ret)
1737                         return ret;
1738         }
1739
1740         return 0;
1741 }
1742
1743 static void sta_apply_mesh_params(struct ieee80211_local *local,
1744                                   struct sta_info *sta,
1745                                   struct station_parameters *params)
1746 {
1747 #ifdef CONFIG_MAC80211_MESH
1748         struct ieee80211_sub_if_data *sdata = sta->sdata;
1749         u64 changed = 0;
1750
1751         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1752                 switch (params->plink_state) {
1753                 case NL80211_PLINK_ESTAB:
1754                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1755                                 changed = mesh_plink_inc_estab_count(sdata);
1756                         sta->mesh->plink_state = params->plink_state;
1757                         sta->mesh->aid = params->peer_aid;
1758
1759                         ieee80211_mps_sta_status_update(sta);
1760                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1761                                       sdata->u.mesh.mshcfg.power_mode);
1762
1763                         ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1764                         /* init at low value */
1765                         ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1766
1767                         break;
1768                 case NL80211_PLINK_LISTEN:
1769                 case NL80211_PLINK_BLOCKED:
1770                 case NL80211_PLINK_OPN_SNT:
1771                 case NL80211_PLINK_OPN_RCVD:
1772                 case NL80211_PLINK_CNF_RCVD:
1773                 case NL80211_PLINK_HOLDING:
1774                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1775                                 changed = mesh_plink_dec_estab_count(sdata);
1776                         sta->mesh->plink_state = params->plink_state;
1777
1778                         ieee80211_mps_sta_status_update(sta);
1779                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1780                                         NL80211_MESH_POWER_UNKNOWN);
1781                         break;
1782                 default:
1783                         /*  nothing  */
1784                         break;
1785                 }
1786         }
1787
1788         switch (params->plink_action) {
1789         case NL80211_PLINK_ACTION_NO_ACTION:
1790                 /* nothing */
1791                 break;
1792         case NL80211_PLINK_ACTION_OPEN:
1793                 changed |= mesh_plink_open(sta);
1794                 break;
1795         case NL80211_PLINK_ACTION_BLOCK:
1796                 changed |= mesh_plink_block(sta);
1797                 break;
1798         }
1799
1800         if (params->local_pm)
1801                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1802                                                           params->local_pm);
1803
1804         ieee80211_mbss_info_change_notify(sdata, changed);
1805 #endif
1806 }
1807
1808 static int sta_link_apply_parameters(struct ieee80211_local *local,
1809                                      struct sta_info *sta, bool new_link,
1810                                      struct link_station_parameters *params)
1811 {
1812         int ret = 0;
1813         struct ieee80211_supported_band *sband;
1814         struct ieee80211_sub_if_data *sdata = sta->sdata;
1815         u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1816         struct ieee80211_link_data *link =
1817                 sdata_dereference(sdata->link[link_id], sdata);
1818         struct link_sta_info *link_sta =
1819                 rcu_dereference_protected(sta->link[link_id],
1820                                           lockdep_is_held(&local->hw.wiphy->mtx));
1821
1822         /*
1823          * If there are no changes, then accept a link that exist,
1824          * unless it's a new link.
1825          */
1826         if (params->link_id >= 0 && !new_link &&
1827             !params->link_mac && !params->txpwr_set &&
1828             !params->supported_rates_len &&
1829             !params->ht_capa && !params->vht_capa &&
1830             !params->he_capa && !params->eht_capa &&
1831             !params->opmode_notif_used)
1832                 return 0;
1833
1834         if (!link || !link_sta)
1835                 return -EINVAL;
1836
1837         sband = ieee80211_get_link_sband(link);
1838         if (!sband)
1839                 return -EINVAL;
1840
1841         if (params->link_mac) {
1842                 if (new_link) {
1843                         memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1844                         memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1845                 } else if (!ether_addr_equal(link_sta->addr,
1846                                              params->link_mac)) {
1847                         return -EINVAL;
1848                 }
1849         } else if (new_link) {
1850                 return -EINVAL;
1851         }
1852
1853         if (params->txpwr_set) {
1854                 link_sta->pub->txpwr.type = params->txpwr.type;
1855                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1856                         link_sta->pub->txpwr.power = params->txpwr.power;
1857                 ret = drv_sta_set_txpwr(local, sdata, sta);
1858                 if (ret)
1859                         return ret;
1860         }
1861
1862         if (params->supported_rates &&
1863             params->supported_rates_len) {
1864                 ieee80211_parse_bitrates(link->conf->chanreq.oper.width,
1865                                          sband, params->supported_rates,
1866                                          params->supported_rates_len,
1867                                          &link_sta->pub->supp_rates[sband->band]);
1868         }
1869
1870         if (params->ht_capa)
1871                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1872                                                   params->ht_capa, link_sta);
1873
1874         /* VHT can override some HT caps such as the A-MSDU max length */
1875         if (params->vht_capa)
1876                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1877                                                     params->vht_capa, NULL,
1878                                                     link_sta);
1879
1880         if (params->he_capa)
1881                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1882                                                   (void *)params->he_capa,
1883                                                   params->he_capa_len,
1884                                                   (void *)params->he_6ghz_capa,
1885                                                   link_sta);
1886
1887         if (params->he_capa && params->eht_capa)
1888                 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1889                                                     (u8 *)params->he_capa,
1890                                                     params->he_capa_len,
1891                                                     params->eht_capa,
1892                                                     params->eht_capa_len,
1893                                                     link_sta);
1894
1895         if (params->opmode_notif_used) {
1896                 /* returned value is only needed for rc update, but the
1897                  * rc isn't initialized here yet, so ignore it
1898                  */
1899                 __ieee80211_vht_handle_opmode(sdata, link_sta,
1900                                               params->opmode_notif,
1901                                               sband->band);
1902         }
1903
1904         ieee80211_sta_init_nss(link_sta);
1905
1906         return ret;
1907 }
1908
1909 static int sta_apply_parameters(struct ieee80211_local *local,
1910                                 struct sta_info *sta,
1911                                 struct station_parameters *params)
1912 {
1913         struct ieee80211_sub_if_data *sdata = sta->sdata;
1914         u32 mask, set;
1915         int ret = 0;
1916
1917         mask = params->sta_flags_mask;
1918         set = params->sta_flags_set;
1919
1920         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1921                 /*
1922                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1923                  * API but must follow AUTHENTICATED for driver state.
1924                  */
1925                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1926                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1927                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1928                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1929         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1930                 /*
1931                  * TDLS -- everything follows authorized, but
1932                  * only becoming authorized is possible, not
1933                  * going back
1934                  */
1935                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1936                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1937                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1938                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1939                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1940                 }
1941         }
1942
1943         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1944             local->hw.queues >= IEEE80211_NUM_ACS)
1945                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1946
1947         /* auth flags will be set later for TDLS,
1948          * and for unassociated stations that move to associated */
1949         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1950             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1951               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1952                 ret = sta_apply_auth_flags(local, sta, mask, set);
1953                 if (ret)
1954                         return ret;
1955         }
1956
1957         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1958                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1959                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1960                 else
1961                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1962         }
1963
1964         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1965                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1966                 if (set & BIT(NL80211_STA_FLAG_MFP))
1967                         set_sta_flag(sta, WLAN_STA_MFP);
1968                 else
1969                         clear_sta_flag(sta, WLAN_STA_MFP);
1970         }
1971
1972         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1973                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1974                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1975                 else
1976                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1977         }
1978
1979         if (mask & BIT(NL80211_STA_FLAG_SPP_AMSDU))
1980                 sta->sta.spp_amsdu = set & BIT(NL80211_STA_FLAG_SPP_AMSDU);
1981
1982         /* mark TDLS channel switch support, if the AP allows it */
1983         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1984             !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1985             params->ext_capab_len >= 4 &&
1986             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1987                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1988
1989         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1990             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1991             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1992             params->ext_capab_len >= 8 &&
1993             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1994                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1995
1996         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1997                 sta->sta.uapsd_queues = params->uapsd_queues;
1998                 sta->sta.max_sp = params->max_sp;
1999         }
2000
2001         ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
2002                                               params->ext_capab_len);
2003
2004         /*
2005          * cfg80211 validates this (1-2007) and allows setting the AID
2006          * only when creating a new station entry
2007          */
2008         if (params->aid)
2009                 sta->sta.aid = params->aid;
2010
2011         /*
2012          * Some of the following updates would be racy if called on an
2013          * existing station, via ieee80211_change_station(). However,
2014          * all such changes are rejected by cfg80211 except for updates
2015          * changing the supported rates on an existing but not yet used
2016          * TDLS peer.
2017          */
2018
2019         if (params->listen_interval >= 0)
2020                 sta->listen_interval = params->listen_interval;
2021
2022         ret = sta_link_apply_parameters(local, sta, false,
2023                                         &params->link_sta_params);
2024         if (ret)
2025                 return ret;
2026
2027         if (params->support_p2p_ps >= 0)
2028                 sta->sta.support_p2p_ps = params->support_p2p_ps;
2029
2030         if (ieee80211_vif_is_mesh(&sdata->vif))
2031                 sta_apply_mesh_params(local, sta, params);
2032
2033         if (params->airtime_weight)
2034                 sta->airtime_weight = params->airtime_weight;
2035
2036         /* set the STA state after all sta info from usermode has been set */
2037         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
2038             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
2039                 ret = sta_apply_auth_flags(local, sta, mask, set);
2040                 if (ret)
2041                         return ret;
2042         }
2043
2044         /* Mark the STA as MLO if MLD MAC address is available */
2045         if (params->link_sta_params.mld_mac)
2046                 sta->sta.mlo = true;
2047
2048         return 0;
2049 }
2050
2051 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
2052                                  const u8 *mac,
2053                                  struct station_parameters *params)
2054 {
2055         struct ieee80211_local *local = wiphy_priv(wiphy);
2056         struct sta_info *sta;
2057         struct ieee80211_sub_if_data *sdata;
2058         int err;
2059
2060         lockdep_assert_wiphy(local->hw.wiphy);
2061
2062         if (params->vlan) {
2063                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2064
2065                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2066                     sdata->vif.type != NL80211_IFTYPE_AP)
2067                         return -EINVAL;
2068         } else
2069                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2070
2071         if (ether_addr_equal(mac, sdata->vif.addr))
2072                 return -EINVAL;
2073
2074         if (!is_valid_ether_addr(mac))
2075                 return -EINVAL;
2076
2077         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2078             sdata->vif.type == NL80211_IFTYPE_STATION &&
2079             !sdata->u.mgd.associated)
2080                 return -EINVAL;
2081
2082         /*
2083          * If we have a link ID, it can be a non-MLO station on an AP MLD,
2084          * but we need to have a link_mac in that case as well, so use the
2085          * STA's MAC address in that case.
2086          */
2087         if (params->link_sta_params.link_id >= 0)
2088                 sta = sta_info_alloc_with_link(sdata, mac,
2089                                                params->link_sta_params.link_id,
2090                                                params->link_sta_params.link_mac ?: mac,
2091                                                GFP_KERNEL);
2092         else
2093                 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
2094
2095         if (!sta)
2096                 return -ENOMEM;
2097
2098         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2099                 sta->sta.tdls = true;
2100
2101         /* Though the mutex is not needed here (since the station is not
2102          * visible yet), sta_apply_parameters (and inner functions) require
2103          * the mutex due to other paths.
2104          */
2105         err = sta_apply_parameters(local, sta, params);
2106         if (err) {
2107                 sta_info_free(local, sta);
2108                 return err;
2109         }
2110
2111         /*
2112          * for TDLS and for unassociated station, rate control should be
2113          * initialized only when rates are known and station is marked
2114          * authorized/associated
2115          */
2116         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2117             test_sta_flag(sta, WLAN_STA_ASSOC))
2118                 rate_control_rate_init(sta);
2119
2120         return sta_info_insert(sta);
2121 }
2122
2123 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
2124                                  struct station_del_parameters *params)
2125 {
2126         struct ieee80211_sub_if_data *sdata;
2127
2128         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2129
2130         if (params->mac)
2131                 return sta_info_destroy_addr_bss(sdata, params->mac);
2132
2133         sta_info_flush(sdata, params->link_id);
2134         return 0;
2135 }
2136
2137 static int ieee80211_change_station(struct wiphy *wiphy,
2138                                     struct net_device *dev, const u8 *mac,
2139                                     struct station_parameters *params)
2140 {
2141         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2142         struct ieee80211_local *local = wiphy_priv(wiphy);
2143         struct sta_info *sta;
2144         struct ieee80211_sub_if_data *vlansdata;
2145         enum cfg80211_station_type statype;
2146         int err;
2147
2148         lockdep_assert_wiphy(local->hw.wiphy);
2149
2150         sta = sta_info_get_bss(sdata, mac);
2151         if (!sta)
2152                 return -ENOENT;
2153
2154         switch (sdata->vif.type) {
2155         case NL80211_IFTYPE_MESH_POINT:
2156                 if (sdata->u.mesh.user_mpm)
2157                         statype = CFG80211_STA_MESH_PEER_USER;
2158                 else
2159                         statype = CFG80211_STA_MESH_PEER_KERNEL;
2160                 break;
2161         case NL80211_IFTYPE_ADHOC:
2162                 statype = CFG80211_STA_IBSS;
2163                 break;
2164         case NL80211_IFTYPE_STATION:
2165                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2166                         statype = CFG80211_STA_AP_STA;
2167                         break;
2168                 }
2169                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2170                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2171                 else
2172                         statype = CFG80211_STA_TDLS_PEER_SETUP;
2173                 break;
2174         case NL80211_IFTYPE_AP:
2175         case NL80211_IFTYPE_AP_VLAN:
2176                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2177                         statype = CFG80211_STA_AP_CLIENT;
2178                 else
2179                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2180                 break;
2181         default:
2182                 return -EOPNOTSUPP;
2183         }
2184
2185         err = cfg80211_check_station_change(wiphy, params, statype);
2186         if (err)
2187                 return err;
2188
2189         if (params->vlan && params->vlan != sta->sdata->dev) {
2190                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2191
2192                 if (params->vlan->ieee80211_ptr->use_4addr) {
2193                         if (vlansdata->u.vlan.sta)
2194                                 return -EBUSY;
2195
2196                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2197                         __ieee80211_check_fast_rx_iface(vlansdata);
2198                         drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2199                 }
2200
2201                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2202                     sta->sdata->u.vlan.sta)
2203                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2204
2205                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2206                         ieee80211_vif_dec_num_mcast(sta->sdata);
2207
2208                 sta->sdata = vlansdata;
2209                 ieee80211_check_fast_rx(sta);
2210                 ieee80211_check_fast_xmit(sta);
2211
2212                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2213                         ieee80211_vif_inc_num_mcast(sta->sdata);
2214                         cfg80211_send_layer2_update(sta->sdata->dev,
2215                                                     sta->sta.addr);
2216                 }
2217         }
2218
2219         err = sta_apply_parameters(local, sta, params);
2220         if (err)
2221                 return err;
2222
2223         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2224             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2225                 ieee80211_recalc_ps(local);
2226                 ieee80211_recalc_ps_vif(sdata);
2227         }
2228
2229         return 0;
2230 }
2231
2232 #ifdef CONFIG_MAC80211_MESH
2233 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2234                                const u8 *dst, const u8 *next_hop)
2235 {
2236         struct ieee80211_sub_if_data *sdata;
2237         struct mesh_path *mpath;
2238         struct sta_info *sta;
2239
2240         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241
2242         rcu_read_lock();
2243         sta = sta_info_get(sdata, next_hop);
2244         if (!sta) {
2245                 rcu_read_unlock();
2246                 return -ENOENT;
2247         }
2248
2249         mpath = mesh_path_add(sdata, dst);
2250         if (IS_ERR(mpath)) {
2251                 rcu_read_unlock();
2252                 return PTR_ERR(mpath);
2253         }
2254
2255         mesh_path_fix_nexthop(mpath, sta);
2256
2257         rcu_read_unlock();
2258         return 0;
2259 }
2260
2261 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2262                                const u8 *dst)
2263 {
2264         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2265
2266         if (dst)
2267                 return mesh_path_del(sdata, dst);
2268
2269         mesh_path_flush_by_iface(sdata);
2270         return 0;
2271 }
2272
2273 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2274                                   const u8 *dst, const u8 *next_hop)
2275 {
2276         struct ieee80211_sub_if_data *sdata;
2277         struct mesh_path *mpath;
2278         struct sta_info *sta;
2279
2280         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2281
2282         rcu_read_lock();
2283
2284         sta = sta_info_get(sdata, next_hop);
2285         if (!sta) {
2286                 rcu_read_unlock();
2287                 return -ENOENT;
2288         }
2289
2290         mpath = mesh_path_lookup(sdata, dst);
2291         if (!mpath) {
2292                 rcu_read_unlock();
2293                 return -ENOENT;
2294         }
2295
2296         mesh_path_fix_nexthop(mpath, sta);
2297
2298         rcu_read_unlock();
2299         return 0;
2300 }
2301
2302 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2303                             struct mpath_info *pinfo)
2304 {
2305         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2306
2307         if (next_hop_sta)
2308                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2309         else
2310                 eth_zero_addr(next_hop);
2311
2312         memset(pinfo, 0, sizeof(*pinfo));
2313
2314         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2315
2316         pinfo->filled = MPATH_INFO_FRAME_QLEN |
2317                         MPATH_INFO_SN |
2318                         MPATH_INFO_METRIC |
2319                         MPATH_INFO_EXPTIME |
2320                         MPATH_INFO_DISCOVERY_TIMEOUT |
2321                         MPATH_INFO_DISCOVERY_RETRIES |
2322                         MPATH_INFO_FLAGS |
2323                         MPATH_INFO_HOP_COUNT |
2324                         MPATH_INFO_PATH_CHANGE;
2325
2326         pinfo->frame_qlen = mpath->frame_queue.qlen;
2327         pinfo->sn = mpath->sn;
2328         pinfo->metric = mpath->metric;
2329         if (time_before(jiffies, mpath->exp_time))
2330                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2331         pinfo->discovery_timeout =
2332                         jiffies_to_msecs(mpath->discovery_timeout);
2333         pinfo->discovery_retries = mpath->discovery_retries;
2334         if (mpath->flags & MESH_PATH_ACTIVE)
2335                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2336         if (mpath->flags & MESH_PATH_RESOLVING)
2337                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2338         if (mpath->flags & MESH_PATH_SN_VALID)
2339                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2340         if (mpath->flags & MESH_PATH_FIXED)
2341                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2342         if (mpath->flags & MESH_PATH_RESOLVED)
2343                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2344         pinfo->hop_count = mpath->hop_count;
2345         pinfo->path_change_count = mpath->path_change_count;
2346 }
2347
2348 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2349                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2350
2351 {
2352         struct ieee80211_sub_if_data *sdata;
2353         struct mesh_path *mpath;
2354
2355         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2356
2357         rcu_read_lock();
2358         mpath = mesh_path_lookup(sdata, dst);
2359         if (!mpath) {
2360                 rcu_read_unlock();
2361                 return -ENOENT;
2362         }
2363         memcpy(dst, mpath->dst, ETH_ALEN);
2364         mpath_set_pinfo(mpath, next_hop, pinfo);
2365         rcu_read_unlock();
2366         return 0;
2367 }
2368
2369 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2370                                 int idx, u8 *dst, u8 *next_hop,
2371                                 struct mpath_info *pinfo)
2372 {
2373         struct ieee80211_sub_if_data *sdata;
2374         struct mesh_path *mpath;
2375
2376         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2377
2378         rcu_read_lock();
2379         mpath = mesh_path_lookup_by_idx(sdata, idx);
2380         if (!mpath) {
2381                 rcu_read_unlock();
2382                 return -ENOENT;
2383         }
2384         memcpy(dst, mpath->dst, ETH_ALEN);
2385         mpath_set_pinfo(mpath, next_hop, pinfo);
2386         rcu_read_unlock();
2387         return 0;
2388 }
2389
2390 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2391                           struct mpath_info *pinfo)
2392 {
2393         memset(pinfo, 0, sizeof(*pinfo));
2394         memcpy(mpp, mpath->mpp, ETH_ALEN);
2395
2396         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2397 }
2398
2399 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2400                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2401
2402 {
2403         struct ieee80211_sub_if_data *sdata;
2404         struct mesh_path *mpath;
2405
2406         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2407
2408         rcu_read_lock();
2409         mpath = mpp_path_lookup(sdata, dst);
2410         if (!mpath) {
2411                 rcu_read_unlock();
2412                 return -ENOENT;
2413         }
2414         memcpy(dst, mpath->dst, ETH_ALEN);
2415         mpp_set_pinfo(mpath, mpp, pinfo);
2416         rcu_read_unlock();
2417         return 0;
2418 }
2419
2420 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2421                               int idx, u8 *dst, u8 *mpp,
2422                               struct mpath_info *pinfo)
2423 {
2424         struct ieee80211_sub_if_data *sdata;
2425         struct mesh_path *mpath;
2426
2427         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2428
2429         rcu_read_lock();
2430         mpath = mpp_path_lookup_by_idx(sdata, idx);
2431         if (!mpath) {
2432                 rcu_read_unlock();
2433                 return -ENOENT;
2434         }
2435         memcpy(dst, mpath->dst, ETH_ALEN);
2436         mpp_set_pinfo(mpath, mpp, pinfo);
2437         rcu_read_unlock();
2438         return 0;
2439 }
2440
2441 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2442                                 struct net_device *dev,
2443                                 struct mesh_config *conf)
2444 {
2445         struct ieee80211_sub_if_data *sdata;
2446         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2447
2448         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2449         return 0;
2450 }
2451
2452 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2453 {
2454         return (mask >> (parm-1)) & 0x1;
2455 }
2456
2457 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2458                 const struct mesh_setup *setup)
2459 {
2460         u8 *new_ie;
2461         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2462                                         struct ieee80211_sub_if_data, u.mesh);
2463         int i;
2464
2465         /* allocate information elements */
2466         new_ie = NULL;
2467
2468         if (setup->ie_len) {
2469                 new_ie = kmemdup(setup->ie, setup->ie_len,
2470                                 GFP_KERNEL);
2471                 if (!new_ie)
2472                         return -ENOMEM;
2473         }
2474         ifmsh->ie_len = setup->ie_len;
2475         ifmsh->ie = new_ie;
2476
2477         /* now copy the rest of the setup parameters */
2478         ifmsh->mesh_id_len = setup->mesh_id_len;
2479         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2480         ifmsh->mesh_sp_id = setup->sync_method;
2481         ifmsh->mesh_pp_id = setup->path_sel_proto;
2482         ifmsh->mesh_pm_id = setup->path_metric;
2483         ifmsh->user_mpm = setup->user_mpm;
2484         ifmsh->mesh_auth_id = setup->auth_id;
2485         ifmsh->security = IEEE80211_MESH_SEC_NONE;
2486         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2487         if (setup->is_authenticated)
2488                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2489         if (setup->is_secure)
2490                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2491
2492         /* mcast rate setting in Mesh Node */
2493         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2494                                                 sizeof(setup->mcast_rate));
2495         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2496
2497         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2498         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2499
2500         sdata->beacon_rate_set = false;
2501         if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2502                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2503                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2504                         sdata->beacon_rateidx_mask[i] =
2505                                 setup->beacon_rate.control[i].legacy;
2506                         if (sdata->beacon_rateidx_mask[i])
2507                                 sdata->beacon_rate_set = true;
2508                 }
2509         }
2510
2511         return 0;
2512 }
2513
2514 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2515                                         struct net_device *dev, u32 mask,
2516                                         const struct mesh_config *nconf)
2517 {
2518         struct mesh_config *conf;
2519         struct ieee80211_sub_if_data *sdata;
2520         struct ieee80211_if_mesh *ifmsh;
2521
2522         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2523         ifmsh = &sdata->u.mesh;
2524
2525         /* Set the config options which we are interested in setting */
2526         conf = &(sdata->u.mesh.mshcfg);
2527         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2528                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2529         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2530                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2531         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2532                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2533         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2534                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2535         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2536                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2537         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2538                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2539         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2540                 conf->element_ttl = nconf->element_ttl;
2541         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2542                 if (ifmsh->user_mpm)
2543                         return -EBUSY;
2544                 conf->auto_open_plinks = nconf->auto_open_plinks;
2545         }
2546         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2547                 conf->dot11MeshNbrOffsetMaxNeighbor =
2548                         nconf->dot11MeshNbrOffsetMaxNeighbor;
2549         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2550                 conf->dot11MeshHWMPmaxPREQretries =
2551                         nconf->dot11MeshHWMPmaxPREQretries;
2552         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2553                 conf->path_refresh_time = nconf->path_refresh_time;
2554         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2555                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2556         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2557                 conf->dot11MeshHWMPactivePathTimeout =
2558                         nconf->dot11MeshHWMPactivePathTimeout;
2559         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2560                 conf->dot11MeshHWMPpreqMinInterval =
2561                         nconf->dot11MeshHWMPpreqMinInterval;
2562         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2563                 conf->dot11MeshHWMPperrMinInterval =
2564                         nconf->dot11MeshHWMPperrMinInterval;
2565         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2566                            mask))
2567                 conf->dot11MeshHWMPnetDiameterTraversalTime =
2568                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
2569         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2570                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2571                 ieee80211_mesh_root_setup(ifmsh);
2572         }
2573         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2574                 /* our current gate announcement implementation rides on root
2575                  * announcements, so require this ifmsh to also be a root node
2576                  * */
2577                 if (nconf->dot11MeshGateAnnouncementProtocol &&
2578                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2579                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2580                         ieee80211_mesh_root_setup(ifmsh);
2581                 }
2582                 conf->dot11MeshGateAnnouncementProtocol =
2583                         nconf->dot11MeshGateAnnouncementProtocol;
2584         }
2585         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2586                 conf->dot11MeshHWMPRannInterval =
2587                         nconf->dot11MeshHWMPRannInterval;
2588         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2589                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2590         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2591                 /* our RSSI threshold implementation is supported only for
2592                  * devices that report signal in dBm.
2593                  */
2594                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2595                         return -EOPNOTSUPP;
2596                 conf->rssi_threshold = nconf->rssi_threshold;
2597         }
2598         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2599                 conf->ht_opmode = nconf->ht_opmode;
2600                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2601                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2602                                                   BSS_CHANGED_HT);
2603         }
2604         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2605                 conf->dot11MeshHWMPactivePathToRootTimeout =
2606                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2607         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2608                 conf->dot11MeshHWMProotInterval =
2609                         nconf->dot11MeshHWMProotInterval;
2610         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2611                 conf->dot11MeshHWMPconfirmationInterval =
2612                         nconf->dot11MeshHWMPconfirmationInterval;
2613         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2614                 conf->power_mode = nconf->power_mode;
2615                 ieee80211_mps_local_status_update(sdata);
2616         }
2617         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2618                 conf->dot11MeshAwakeWindowDuration =
2619                         nconf->dot11MeshAwakeWindowDuration;
2620         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2621                 conf->plink_timeout = nconf->plink_timeout;
2622         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2623                 conf->dot11MeshConnectedToMeshGate =
2624                         nconf->dot11MeshConnectedToMeshGate;
2625         if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2626                 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2627         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2628                 conf->dot11MeshConnectedToAuthServer =
2629                         nconf->dot11MeshConnectedToAuthServer;
2630         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2631         return 0;
2632 }
2633
2634 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2635                                const struct mesh_config *conf,
2636                                const struct mesh_setup *setup)
2637 {
2638         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2639         struct ieee80211_chan_req chanreq = { .oper = setup->chandef };
2640         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2641         int err;
2642
2643         lockdep_assert_wiphy(sdata->local->hw.wiphy);
2644
2645         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2646         err = copy_mesh_setup(ifmsh, setup);
2647         if (err)
2648                 return err;
2649
2650         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2651
2652         /* can mesh use other SMPS modes? */
2653         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2654         sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2655
2656         err = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
2657                                          IEEE80211_CHANCTX_SHARED);
2658         if (err)
2659                 return err;
2660
2661         return ieee80211_start_mesh(sdata);
2662 }
2663
2664 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2665 {
2666         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2667
2668         lockdep_assert_wiphy(sdata->local->hw.wiphy);
2669
2670         ieee80211_stop_mesh(sdata);
2671         ieee80211_link_release_channel(&sdata->deflink);
2672         kfree(sdata->u.mesh.ie);
2673
2674         return 0;
2675 }
2676 #endif
2677
2678 static int ieee80211_change_bss(struct wiphy *wiphy,
2679                                 struct net_device *dev,
2680                                 struct bss_parameters *params)
2681 {
2682         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2683         struct ieee80211_link_data *link;
2684         struct ieee80211_supported_band *sband;
2685         u64 changed = 0;
2686
2687         link = ieee80211_link_or_deflink(sdata, params->link_id, true);
2688         if (IS_ERR(link))
2689                 return PTR_ERR(link);
2690
2691         if (!sdata_dereference(link->u.ap.beacon, sdata))
2692                 return -ENOENT;
2693
2694         sband = ieee80211_get_link_sband(link);
2695         if (!sband)
2696                 return -EINVAL;
2697
2698         if (params->basic_rates) {
2699                 if (!ieee80211_parse_bitrates(link->conf->chanreq.oper.width,
2700                                               wiphy->bands[sband->band],
2701                                               params->basic_rates,
2702                                               params->basic_rates_len,
2703                                               &link->conf->basic_rates))
2704                         return -EINVAL;
2705                 changed |= BSS_CHANGED_BASIC_RATES;
2706                 ieee80211_check_rate_mask(link);
2707         }
2708
2709         if (params->use_cts_prot >= 0) {
2710                 link->conf->use_cts_prot = params->use_cts_prot;
2711                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2712         }
2713         if (params->use_short_preamble >= 0) {
2714                 link->conf->use_short_preamble = params->use_short_preamble;
2715                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2716         }
2717
2718         if (!link->conf->use_short_slot &&
2719             (sband->band == NL80211_BAND_5GHZ ||
2720              sband->band == NL80211_BAND_6GHZ)) {
2721                 link->conf->use_short_slot = true;
2722                 changed |= BSS_CHANGED_ERP_SLOT;
2723         }
2724
2725         if (params->use_short_slot_time >= 0) {
2726                 link->conf->use_short_slot = params->use_short_slot_time;
2727                 changed |= BSS_CHANGED_ERP_SLOT;
2728         }
2729
2730         if (params->ap_isolate >= 0) {
2731                 if (params->ap_isolate)
2732                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2733                 else
2734                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2735                 ieee80211_check_fast_rx_iface(sdata);
2736         }
2737
2738         if (params->ht_opmode >= 0) {
2739                 link->conf->ht_operation_mode = (u16)params->ht_opmode;
2740                 changed |= BSS_CHANGED_HT;
2741         }
2742
2743         if (params->p2p_ctwindow >= 0) {
2744                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2745                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2746                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2747                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2748                 changed |= BSS_CHANGED_P2P_PS;
2749         }
2750
2751         if (params->p2p_opp_ps > 0) {
2752                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2753                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2754                 changed |= BSS_CHANGED_P2P_PS;
2755         } else if (params->p2p_opp_ps == 0) {
2756                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2757                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2758                 changed |= BSS_CHANGED_P2P_PS;
2759         }
2760
2761         ieee80211_link_info_change_notify(sdata, link, changed);
2762
2763         return 0;
2764 }
2765
2766 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2767                                     struct net_device *dev,
2768                                     struct ieee80211_txq_params *params)
2769 {
2770         struct ieee80211_local *local = wiphy_priv(wiphy);
2771         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2772         struct ieee80211_link_data *link =
2773                 ieee80211_link_or_deflink(sdata, params->link_id, true);
2774         struct ieee80211_tx_queue_params p;
2775
2776         if (!local->ops->conf_tx)
2777                 return -EOPNOTSUPP;
2778
2779         if (local->hw.queues < IEEE80211_NUM_ACS)
2780                 return -EOPNOTSUPP;
2781
2782         if (IS_ERR(link))
2783                 return PTR_ERR(link);
2784
2785         memset(&p, 0, sizeof(p));
2786         p.aifs = params->aifs;
2787         p.cw_max = params->cwmax;
2788         p.cw_min = params->cwmin;
2789         p.txop = params->txop;
2790
2791         /*
2792          * Setting tx queue params disables u-apsd because it's only
2793          * called in master mode.
2794          */
2795         p.uapsd = false;
2796
2797         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2798
2799         link->tx_conf[params->ac] = p;
2800         if (drv_conf_tx(local, link, params->ac, &p)) {
2801                 wiphy_debug(local->hw.wiphy,
2802                             "failed to set TX queue parameters for AC %d\n",
2803                             params->ac);
2804                 return -EINVAL;
2805         }
2806
2807         ieee80211_link_info_change_notify(sdata, link,
2808                                           BSS_CHANGED_QOS);
2809
2810         return 0;
2811 }
2812
2813 #ifdef CONFIG_PM
2814 static int ieee80211_suspend(struct wiphy *wiphy,
2815                              struct cfg80211_wowlan *wowlan)
2816 {
2817         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2818 }
2819
2820 static int ieee80211_resume(struct wiphy *wiphy)
2821 {
2822         return __ieee80211_resume(wiphy_priv(wiphy));
2823 }
2824 #else
2825 #define ieee80211_suspend NULL
2826 #define ieee80211_resume NULL
2827 #endif
2828
2829 static int ieee80211_scan(struct wiphy *wiphy,
2830                           struct cfg80211_scan_request *req)
2831 {
2832         struct ieee80211_sub_if_data *sdata;
2833
2834         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2835
2836         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2837         case NL80211_IFTYPE_STATION:
2838         case NL80211_IFTYPE_ADHOC:
2839         case NL80211_IFTYPE_MESH_POINT:
2840         case NL80211_IFTYPE_P2P_CLIENT:
2841         case NL80211_IFTYPE_P2P_DEVICE:
2842                 break;
2843         case NL80211_IFTYPE_P2P_GO:
2844                 if (sdata->local->ops->hw_scan)
2845                         break;
2846                 /*
2847                  * FIXME: implement NoA while scanning in software,
2848                  * for now fall through to allow scanning only when
2849                  * beaconing hasn't been configured yet
2850                  */
2851                 fallthrough;
2852         case NL80211_IFTYPE_AP:
2853                 /*
2854                  * If the scan has been forced (and the driver supports
2855                  * forcing), don't care about being beaconing already.
2856                  * This will create problems to the attached stations (e.g. all
2857                  * the frames sent while scanning on other channel will be
2858                  * lost)
2859                  */
2860                 if (sdata->deflink.u.ap.beacon &&
2861                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2862                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2863                         return -EOPNOTSUPP;
2864                 break;
2865         case NL80211_IFTYPE_NAN:
2866         default:
2867                 return -EOPNOTSUPP;
2868         }
2869
2870         return ieee80211_request_scan(sdata, req);
2871 }
2872
2873 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2874 {
2875         ieee80211_scan_cancel(wiphy_priv(wiphy));
2876 }
2877
2878 static int
2879 ieee80211_sched_scan_start(struct wiphy *wiphy,
2880                            struct net_device *dev,
2881                            struct cfg80211_sched_scan_request *req)
2882 {
2883         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2884
2885         if (!sdata->local->ops->sched_scan_start)
2886                 return -EOPNOTSUPP;
2887
2888         return ieee80211_request_sched_scan_start(sdata, req);
2889 }
2890
2891 static int
2892 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2893                           u64 reqid)
2894 {
2895         struct ieee80211_local *local = wiphy_priv(wiphy);
2896
2897         if (!local->ops->sched_scan_stop)
2898                 return -EOPNOTSUPP;
2899
2900         return ieee80211_request_sched_scan_stop(local);
2901 }
2902
2903 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2904                           struct cfg80211_auth_request *req)
2905 {
2906         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2907 }
2908
2909 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2910                            struct cfg80211_assoc_request *req)
2911 {
2912         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2913 }
2914
2915 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2916                             struct cfg80211_deauth_request *req)
2917 {
2918         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2919 }
2920
2921 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2922                               struct cfg80211_disassoc_request *req)
2923 {
2924         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2925 }
2926
2927 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2928                                struct cfg80211_ibss_params *params)
2929 {
2930         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2931 }
2932
2933 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2934 {
2935         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2936 }
2937
2938 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2939                               struct ocb_setup *setup)
2940 {
2941         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2942 }
2943
2944 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2945 {
2946         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2947 }
2948
2949 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2950                                     int rate[NUM_NL80211_BANDS])
2951 {
2952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2953
2954         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2955                sizeof(int) * NUM_NL80211_BANDS);
2956
2957         ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2958                                           BSS_CHANGED_MCAST_RATE);
2959
2960         return 0;
2961 }
2962
2963 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2964 {
2965         struct ieee80211_local *local = wiphy_priv(wiphy);
2966         int err;
2967
2968         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2969                 ieee80211_check_fast_xmit_all(local);
2970
2971                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2972
2973                 if (err) {
2974                         ieee80211_check_fast_xmit_all(local);
2975                         return err;
2976                 }
2977         }
2978
2979         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2980             (changed & WIPHY_PARAM_DYN_ACK)) {
2981                 s16 coverage_class;
2982
2983                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2984                                         wiphy->coverage_class : -1;
2985                 err = drv_set_coverage_class(local, coverage_class);
2986
2987                 if (err)
2988                         return err;
2989         }
2990
2991         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2992                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2993
2994                 if (err)
2995                         return err;
2996         }
2997
2998         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2999                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
3000                         return -EINVAL;
3001                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
3002         }
3003         if (changed & WIPHY_PARAM_RETRY_LONG) {
3004                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
3005                         return -EINVAL;
3006                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
3007         }
3008         if (changed &
3009             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
3010                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
3011
3012         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
3013                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
3014                        WIPHY_PARAM_TXQ_QUANTUM))
3015                 ieee80211_txq_set_params(local);
3016
3017         return 0;
3018 }
3019
3020 static int ieee80211_set_tx_power(struct wiphy *wiphy,
3021                                   struct wireless_dev *wdev,
3022                                   enum nl80211_tx_power_setting type, int mbm)
3023 {
3024         struct ieee80211_local *local = wiphy_priv(wiphy);
3025         struct ieee80211_sub_if_data *sdata;
3026         enum nl80211_tx_power_setting txp_type = type;
3027         bool update_txp_type = false;
3028         bool has_monitor = false;
3029
3030         lockdep_assert_wiphy(local->hw.wiphy);
3031
3032         if (wdev) {
3033                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3034
3035                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3036                         sdata = wiphy_dereference(local->hw.wiphy,
3037                                                   local->monitor_sdata);
3038                         if (!sdata)
3039                                 return -EOPNOTSUPP;
3040                 }
3041
3042                 switch (type) {
3043                 case NL80211_TX_POWER_AUTOMATIC:
3044                         sdata->deflink.user_power_level =
3045                                 IEEE80211_UNSET_POWER_LEVEL;
3046                         txp_type = NL80211_TX_POWER_LIMITED;
3047                         break;
3048                 case NL80211_TX_POWER_LIMITED:
3049                 case NL80211_TX_POWER_FIXED:
3050                         if (mbm < 0 || (mbm % 100))
3051                                 return -EOPNOTSUPP;
3052                         sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
3053                         break;
3054                 }
3055
3056                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
3057                         update_txp_type = true;
3058                         sdata->vif.bss_conf.txpower_type = txp_type;
3059                 }
3060
3061                 ieee80211_recalc_txpower(sdata, update_txp_type);
3062
3063                 return 0;
3064         }
3065
3066         switch (type) {
3067         case NL80211_TX_POWER_AUTOMATIC:
3068                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
3069                 txp_type = NL80211_TX_POWER_LIMITED;
3070                 break;
3071         case NL80211_TX_POWER_LIMITED:
3072         case NL80211_TX_POWER_FIXED:
3073                 if (mbm < 0 || (mbm % 100))
3074                         return -EOPNOTSUPP;
3075                 local->user_power_level = MBM_TO_DBM(mbm);
3076                 break;
3077         }
3078
3079         list_for_each_entry(sdata, &local->interfaces, list) {
3080                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3081                         has_monitor = true;
3082                         continue;
3083                 }
3084                 sdata->deflink.user_power_level = local->user_power_level;
3085                 if (txp_type != sdata->vif.bss_conf.txpower_type)
3086                         update_txp_type = true;
3087                 sdata->vif.bss_conf.txpower_type = txp_type;
3088         }
3089         list_for_each_entry(sdata, &local->interfaces, list) {
3090                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
3091                         continue;
3092                 ieee80211_recalc_txpower(sdata, update_txp_type);
3093         }
3094
3095         if (has_monitor) {
3096                 sdata = wiphy_dereference(local->hw.wiphy,
3097                                           local->monitor_sdata);
3098                 if (sdata) {
3099                         sdata->deflink.user_power_level = local->user_power_level;
3100                         if (txp_type != sdata->vif.bss_conf.txpower_type)
3101                                 update_txp_type = true;
3102                         sdata->vif.bss_conf.txpower_type = txp_type;
3103
3104                         ieee80211_recalc_txpower(sdata, update_txp_type);
3105                 }
3106         }
3107
3108         return 0;
3109 }
3110
3111 static int ieee80211_get_tx_power(struct wiphy *wiphy,
3112                                   struct wireless_dev *wdev,
3113                                   int *dbm)
3114 {
3115         struct ieee80211_local *local = wiphy_priv(wiphy);
3116         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3117
3118         if (local->ops->get_txpower)
3119                 return drv_get_txpower(local, sdata, dbm);
3120
3121         if (local->emulate_chanctx)
3122                 *dbm = local->hw.conf.power_level;
3123         else
3124                 *dbm = sdata->vif.bss_conf.txpower;
3125
3126         /* INT_MIN indicates no power level was set yet */
3127         if (*dbm == INT_MIN)
3128                 return -EINVAL;
3129
3130         return 0;
3131 }
3132
3133 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3134 {
3135         struct ieee80211_local *local = wiphy_priv(wiphy);
3136
3137         drv_rfkill_poll(local);
3138 }
3139
3140 #ifdef CONFIG_NL80211_TESTMODE
3141 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3142                                   struct wireless_dev *wdev,
3143                                   void *data, int len)
3144 {
3145         struct ieee80211_local *local = wiphy_priv(wiphy);
3146         struct ieee80211_vif *vif = NULL;
3147
3148         if (!local->ops->testmode_cmd)
3149                 return -EOPNOTSUPP;
3150
3151         if (wdev) {
3152                 struct ieee80211_sub_if_data *sdata;
3153
3154                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3155                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3156                         vif = &sdata->vif;
3157         }
3158
3159         return local->ops->testmode_cmd(&local->hw, vif, data, len);
3160 }
3161
3162 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3163                                    struct sk_buff *skb,
3164                                    struct netlink_callback *cb,
3165                                    void *data, int len)
3166 {
3167         struct ieee80211_local *local = wiphy_priv(wiphy);
3168
3169         if (!local->ops->testmode_dump)
3170                 return -EOPNOTSUPP;
3171
3172         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3173 }
3174 #endif
3175
3176 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3177                                  struct ieee80211_link_data *link,
3178                                  enum ieee80211_smps_mode smps_mode)
3179 {
3180         const u8 *ap;
3181         enum ieee80211_smps_mode old_req;
3182         int err;
3183         struct sta_info *sta;
3184         bool tdls_peer_found = false;
3185
3186         lockdep_assert_wiphy(sdata->local->hw.wiphy);
3187
3188         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3189                 return -EINVAL;
3190
3191         if (!ieee80211_vif_link_active(&sdata->vif, link->link_id))
3192                 return 0;
3193
3194         old_req = link->u.mgd.req_smps;
3195         link->u.mgd.req_smps = smps_mode;
3196
3197         /* The driver indicated that EML is enabled for the interface, which
3198          * implies that SMPS flows towards the AP should be stopped.
3199          */
3200         if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE)
3201                 return 0;
3202
3203         if (old_req == smps_mode &&
3204             smps_mode != IEEE80211_SMPS_AUTOMATIC)
3205                 return 0;
3206
3207         /*
3208          * If not associated, or current association is not an HT
3209          * association, there's no need to do anything, just store
3210          * the new value until we associate.
3211          */
3212         if (!sdata->u.mgd.associated ||
3213             link->conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT)
3214                 return 0;
3215
3216         ap = sdata->vif.cfg.ap_addr;
3217
3218         rcu_read_lock();
3219         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3220                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3221                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3222                         continue;
3223
3224                 tdls_peer_found = true;
3225                 break;
3226         }
3227         rcu_read_unlock();
3228
3229         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3230                 if (tdls_peer_found || !sdata->u.mgd.powersave)
3231                         smps_mode = IEEE80211_SMPS_OFF;
3232                 else
3233                         smps_mode = IEEE80211_SMPS_DYNAMIC;
3234         }
3235
3236         /* send SM PS frame to AP */
3237         err = ieee80211_send_smps_action(sdata, smps_mode,
3238                                          ap, ap,
3239                                          ieee80211_vif_is_mld(&sdata->vif) ?
3240                                          link->link_id : -1);
3241         if (err)
3242                 link->u.mgd.req_smps = old_req;
3243         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3244                 ieee80211_teardown_tdls_peers(link);
3245
3246         return err;
3247 }
3248
3249 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3250                                     bool enabled, int timeout)
3251 {
3252         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3253         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3254         unsigned int link_id;
3255
3256         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3257                 return -EOPNOTSUPP;
3258
3259         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3260                 return -EOPNOTSUPP;
3261
3262         if (enabled == sdata->u.mgd.powersave &&
3263             timeout == local->dynamic_ps_forced_timeout)
3264                 return 0;
3265
3266         sdata->u.mgd.powersave = enabled;
3267         local->dynamic_ps_forced_timeout = timeout;
3268
3269         /* no change, but if automatic follow powersave */
3270         for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3271                 struct ieee80211_link_data *link;
3272
3273                 link = sdata_dereference(sdata->link[link_id], sdata);
3274
3275                 if (!link)
3276                         continue;
3277                 __ieee80211_request_smps_mgd(sdata, link,
3278                                              link->u.mgd.req_smps);
3279         }
3280
3281         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3282                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3283
3284         ieee80211_recalc_ps(local);
3285         ieee80211_recalc_ps_vif(sdata);
3286         ieee80211_check_fast_rx_iface(sdata);
3287
3288         return 0;
3289 }
3290
3291 static void ieee80211_set_cqm_rssi_link(struct ieee80211_sub_if_data *sdata,
3292                                         struct ieee80211_link_data *link,
3293                                         s32 rssi_thold, u32 rssi_hyst,
3294                                         s32 rssi_low, s32 rssi_high)
3295 {
3296         struct ieee80211_bss_conf *conf;
3297
3298         if (!link || !link->conf)
3299                 return;
3300
3301         conf = link->conf;
3302
3303         if (rssi_thold && rssi_hyst &&
3304             rssi_thold == conf->cqm_rssi_thold &&
3305             rssi_hyst == conf->cqm_rssi_hyst)
3306                 return;
3307
3308         conf->cqm_rssi_thold = rssi_thold;
3309         conf->cqm_rssi_hyst = rssi_hyst;
3310         conf->cqm_rssi_low = rssi_low;
3311         conf->cqm_rssi_high = rssi_high;
3312         link->u.mgd.last_cqm_event_signal = 0;
3313
3314         if (!ieee80211_vif_link_active(&sdata->vif, link->link_id))
3315                 return;
3316
3317         if (sdata->u.mgd.associated &&
3318             (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3319                 ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_CQM);
3320 }
3321
3322 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3323                                          struct net_device *dev,
3324                                          s32 rssi_thold, u32 rssi_hyst)
3325 {
3326         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3327         struct ieee80211_vif *vif = &sdata->vif;
3328         int link_id;
3329
3330         if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3331             !(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3332                 return -EOPNOTSUPP;
3333
3334         /* For MLD, handle CQM change on all the active links */
3335         for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
3336                 struct ieee80211_link_data *link =
3337                         sdata_dereference(sdata->link[link_id], sdata);
3338
3339                 ieee80211_set_cqm_rssi_link(sdata, link, rssi_thold, rssi_hyst,
3340                                             0, 0);
3341         }
3342
3343         return 0;
3344 }
3345
3346 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3347                                                struct net_device *dev,
3348                                                s32 rssi_low, s32 rssi_high)
3349 {
3350         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3351         struct ieee80211_vif *vif = &sdata->vif;
3352         int link_id;
3353
3354         if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)
3355                 return -EOPNOTSUPP;
3356
3357         /* For MLD, handle CQM change on all the active links */
3358         for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
3359                 struct ieee80211_link_data *link =
3360                         sdata_dereference(sdata->link[link_id], sdata);
3361
3362                 ieee80211_set_cqm_rssi_link(sdata, link, 0, 0,
3363                                             rssi_low, rssi_high);
3364         }
3365
3366         return 0;
3367 }
3368
3369 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3370                                       struct net_device *dev,
3371                                       unsigned int link_id,
3372                                       const u8 *addr,
3373                                       const struct cfg80211_bitrate_mask *mask)
3374 {
3375         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3376         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3377         int i, ret;
3378
3379         if (!ieee80211_sdata_running(sdata))
3380                 return -ENETDOWN;
3381
3382         /*
3383          * If active validate the setting and reject it if it doesn't leave
3384          * at least one basic rate usable, since we really have to be able
3385          * to send something, and if we're an AP we have to be able to do
3386          * so at a basic rate so that all clients can receive it.
3387          */
3388         if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3389             sdata->vif.bss_conf.chanreq.oper.chan) {
3390                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3391                 enum nl80211_band band;
3392
3393                 band = sdata->vif.bss_conf.chanreq.oper.chan->band;
3394
3395                 if (!(mask->control[band].legacy & basic_rates))
3396                         return -EINVAL;
3397         }
3398
3399         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3400                 ret = drv_set_bitrate_mask(local, sdata, mask);
3401                 if (ret)
3402                         return ret;
3403         }
3404
3405         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3406                 struct ieee80211_supported_band *sband = wiphy->bands[i];
3407                 int j;
3408
3409                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3410                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3411                        sizeof(mask->control[i].ht_mcs));
3412                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3413                        mask->control[i].vht_mcs,
3414                        sizeof(mask->control[i].vht_mcs));
3415
3416                 sdata->rc_has_mcs_mask[i] = false;
3417                 sdata->rc_has_vht_mcs_mask[i] = false;
3418                 if (!sband)
3419                         continue;
3420
3421                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3422                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3423                                 sdata->rc_has_mcs_mask[i] = true;
3424                                 break;
3425                         }
3426                 }
3427
3428                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3429                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3430                                 sdata->rc_has_vht_mcs_mask[i] = true;
3431                                 break;
3432                         }
3433                 }
3434         }
3435
3436         return 0;
3437 }
3438
3439 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3440                                            struct net_device *dev,
3441                                            struct cfg80211_chan_def *chandef,
3442                                            u32 cac_time_ms)
3443 {
3444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3445         struct ieee80211_chan_req chanreq = { .oper = *chandef };
3446         struct ieee80211_local *local = sdata->local;
3447         int err;
3448
3449         lockdep_assert_wiphy(local->hw.wiphy);
3450
3451         if (!list_empty(&local->roc_list) || local->scanning) {
3452                 err = -EBUSY;
3453                 goto out_unlock;
3454         }
3455
3456         /* whatever, but channel contexts should not complain about that one */
3457         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3458         sdata->deflink.needed_rx_chains = local->rx_chains;
3459
3460         err = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
3461                                          IEEE80211_CHANCTX_SHARED);
3462         if (err)
3463                 goto out_unlock;
3464
3465         wiphy_delayed_work_queue(wiphy, &sdata->deflink.dfs_cac_timer_work,
3466                                  msecs_to_jiffies(cac_time_ms));
3467
3468  out_unlock:
3469         return err;
3470 }
3471
3472 static void ieee80211_end_cac(struct wiphy *wiphy,
3473                               struct net_device *dev)
3474 {
3475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3476         struct ieee80211_local *local = sdata->local;
3477
3478         lockdep_assert_wiphy(local->hw.wiphy);
3479
3480         list_for_each_entry(sdata, &local->interfaces, list) {
3481                 /* it might be waiting for the local->mtx, but then
3482                  * by the time it gets it, sdata->wdev.cac_started
3483                  * will no longer be true
3484                  */
3485                 wiphy_delayed_work_cancel(wiphy,
3486                                           &sdata->deflink.dfs_cac_timer_work);
3487
3488                 if (sdata->wdev.cac_started) {
3489                         ieee80211_link_release_channel(&sdata->deflink);
3490                         sdata->wdev.cac_started = false;
3491                 }
3492         }
3493 }
3494
3495 static struct cfg80211_beacon_data *
3496 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3497 {
3498         struct cfg80211_beacon_data *new_beacon;
3499         u8 *pos;
3500         int len;
3501
3502         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3503               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3504               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
3505
3506         if (beacon->mbssid_ies)
3507                 len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
3508                                                        beacon->rnr_ies,
3509                                                        beacon->mbssid_ies->cnt);
3510
3511         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3512         if (!new_beacon)
3513                 return NULL;
3514
3515         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3516                 new_beacon->mbssid_ies =
3517                         kzalloc(struct_size(new_beacon->mbssid_ies,
3518                                             elem, beacon->mbssid_ies->cnt),
3519                                 GFP_KERNEL);
3520                 if (!new_beacon->mbssid_ies) {
3521                         kfree(new_beacon);
3522                         return NULL;
3523                 }
3524
3525                 if (beacon->rnr_ies && beacon->rnr_ies->cnt) {
3526                         new_beacon->rnr_ies =
3527                                 kzalloc(struct_size(new_beacon->rnr_ies,
3528                                                     elem, beacon->rnr_ies->cnt),
3529                                         GFP_KERNEL);
3530                         if (!new_beacon->rnr_ies) {
3531                                 kfree(new_beacon->mbssid_ies);
3532                                 kfree(new_beacon);
3533                                 return NULL;
3534                         }
3535                 }
3536         }
3537
3538         pos = (u8 *)(new_beacon + 1);
3539         if (beacon->head_len) {
3540                 new_beacon->head_len = beacon->head_len;
3541                 new_beacon->head = pos;
3542                 memcpy(pos, beacon->head, beacon->head_len);
3543                 pos += beacon->head_len;
3544         }
3545         if (beacon->tail_len) {
3546                 new_beacon->tail_len = beacon->tail_len;
3547                 new_beacon->tail = pos;
3548                 memcpy(pos, beacon->tail, beacon->tail_len);
3549                 pos += beacon->tail_len;
3550         }
3551         if (beacon->beacon_ies_len) {
3552                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3553                 new_beacon->beacon_ies = pos;
3554                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3555                 pos += beacon->beacon_ies_len;
3556         }
3557         if (beacon->proberesp_ies_len) {
3558                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3559                 new_beacon->proberesp_ies = pos;
3560                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3561                 pos += beacon->proberesp_ies_len;
3562         }
3563         if (beacon->assocresp_ies_len) {
3564                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3565                 new_beacon->assocresp_ies = pos;
3566                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3567                 pos += beacon->assocresp_ies_len;
3568         }
3569         if (beacon->probe_resp_len) {
3570                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3571                 new_beacon->probe_resp = pos;
3572                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3573                 pos += beacon->probe_resp_len;
3574         }
3575         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3576                 pos += ieee80211_copy_mbssid_beacon(pos,
3577                                                     new_beacon->mbssid_ies,
3578                                                     beacon->mbssid_ies);
3579                 if (beacon->rnr_ies && beacon->rnr_ies->cnt)
3580                         pos += ieee80211_copy_rnr_beacon(pos,
3581                                                          new_beacon->rnr_ies,
3582                                                          beacon->rnr_ies);
3583         }
3584
3585         /* might copy -1, meaning no changes requested */
3586         new_beacon->ftm_responder = beacon->ftm_responder;
3587         if (beacon->lci) {
3588                 new_beacon->lci_len = beacon->lci_len;
3589                 new_beacon->lci = pos;
3590                 memcpy(pos, beacon->lci, beacon->lci_len);
3591                 pos += beacon->lci_len;
3592         }
3593         if (beacon->civicloc) {
3594                 new_beacon->civicloc_len = beacon->civicloc_len;
3595                 new_beacon->civicloc = pos;
3596                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3597                 pos += beacon->civicloc_len;
3598         }
3599
3600         return new_beacon;
3601 }
3602
3603 void ieee80211_csa_finish(struct ieee80211_vif *vif, unsigned int link_id)
3604 {
3605         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3606         struct ieee80211_local *local = sdata->local;
3607         struct ieee80211_link_data *link_data;
3608
3609         if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
3610                 return;
3611
3612         rcu_read_lock();
3613
3614         link_data = rcu_dereference(sdata->link[link_id]);
3615         if (WARN_ON(!link_data)) {
3616                 rcu_read_unlock();
3617                 return;
3618         }
3619
3620         /* TODO: MBSSID with MLO changes */
3621         if (vif->mbssid_tx_vif == vif) {
3622                 /* Trigger ieee80211_csa_finish() on the non-transmitting
3623                  * interfaces when channel switch is received on
3624                  * transmitting interface
3625                  */
3626                 struct ieee80211_sub_if_data *iter;
3627
3628                 list_for_each_entry_rcu(iter, &local->interfaces, list) {
3629                         if (!ieee80211_sdata_running(iter))
3630                                 continue;
3631
3632                         if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3633                                 continue;
3634
3635                         wiphy_work_queue(iter->local->hw.wiphy,
3636                                          &iter->deflink.csa_finalize_work);
3637                 }
3638         }
3639         wiphy_work_queue(local->hw.wiphy, &link_data->csa_finalize_work);
3640
3641         rcu_read_unlock();
3642 }
3643 EXPORT_SYMBOL(ieee80211_csa_finish);
3644
3645 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3646 {
3647         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3648         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3649         struct ieee80211_local *local = sdata->local;
3650
3651         sdata->csa_blocked_tx = block_tx;
3652         sdata_info(sdata, "channel switch failed, disconnecting\n");
3653         wiphy_work_queue(local->hw.wiphy, &ifmgd->csa_connection_drop_work);
3654 }
3655 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3656
3657 static int ieee80211_set_after_csa_beacon(struct ieee80211_link_data *link_data,
3658                                           u64 *changed)
3659 {
3660         struct ieee80211_sub_if_data *sdata = link_data->sdata;
3661         int err;
3662
3663         switch (sdata->vif.type) {
3664         case NL80211_IFTYPE_AP:
3665                 if (!link_data->u.ap.next_beacon)
3666                         return -EINVAL;
3667
3668                 err = ieee80211_assign_beacon(sdata, link_data,
3669                                               link_data->u.ap.next_beacon,
3670                                               NULL, NULL, changed);
3671                 ieee80211_free_next_beacon(link_data);
3672
3673                 if (err < 0)
3674                         return err;
3675                 break;
3676         case NL80211_IFTYPE_ADHOC:
3677                 err = ieee80211_ibss_finish_csa(sdata, changed);
3678                 if (err < 0)
3679                         return err;
3680                 break;
3681 #ifdef CONFIG_MAC80211_MESH
3682         case NL80211_IFTYPE_MESH_POINT:
3683                 err = ieee80211_mesh_finish_csa(sdata, changed);
3684                 if (err < 0)
3685                         return err;
3686                 break;
3687 #endif
3688         default:
3689                 WARN_ON(1);
3690                 return -EINVAL;
3691         }
3692
3693         return 0;
3694 }
3695
3696 static int __ieee80211_csa_finalize(struct ieee80211_link_data *link_data)
3697 {
3698         struct ieee80211_sub_if_data *sdata = link_data->sdata;
3699         struct ieee80211_local *local = sdata->local;
3700         struct ieee80211_bss_conf *link_conf = link_data->conf;
3701         u64 changed = 0;
3702         int err;
3703
3704         lockdep_assert_wiphy(local->hw.wiphy);
3705
3706         /*
3707          * using reservation isn't immediate as it may be deferred until later
3708          * with multi-vif. once reservation is complete it will re-schedule the
3709          * work with no reserved_chanctx so verify chandef to check if it
3710          * completed successfully
3711          */
3712
3713         if (link_data->reserved_chanctx) {
3714                 /*
3715                  * with multi-vif csa driver may call ieee80211_csa_finish()
3716                  * many times while waiting for other interfaces to use their
3717                  * reservations
3718                  */
3719                 if (link_data->reserved_ready)
3720                         return 0;
3721
3722                 return ieee80211_link_use_reserved_context(link_data);
3723         }
3724
3725         if (!cfg80211_chandef_identical(&link_conf->chanreq.oper,
3726                                         &link_data->csa_chanreq.oper))
3727                 return -EINVAL;
3728
3729         link_conf->csa_active = false;
3730
3731         err = ieee80211_set_after_csa_beacon(link_data, &changed);
3732         if (err)
3733                 return err;
3734
3735         ieee80211_link_info_change_notify(sdata, link_data, changed);
3736
3737         if (sdata->csa_blocked_tx) {
3738                 ieee80211_wake_vif_queues(local, sdata,
3739                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3740                 sdata->csa_blocked_tx = false;
3741         }
3742
3743         err = drv_post_channel_switch(link_data);
3744         if (err)
3745                 return err;
3746
3747         cfg80211_ch_switch_notify(sdata->dev, &link_data->csa_chanreq.oper,
3748                                   link_data->link_id);
3749
3750         return 0;
3751 }
3752
3753 static void ieee80211_csa_finalize(struct ieee80211_link_data *link_data)
3754 {
3755         struct ieee80211_sub_if_data *sdata = link_data->sdata;
3756
3757         if (__ieee80211_csa_finalize(link_data)) {
3758                 sdata_info(sdata, "failed to finalize CSA on link %d, disconnecting\n",
3759                            link_data->link_id);
3760                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3761                                     GFP_KERNEL);
3762         }
3763 }
3764
3765 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work)
3766 {
3767         struct ieee80211_link_data *link =
3768                 container_of(work, struct ieee80211_link_data, csa_finalize_work);
3769         struct ieee80211_sub_if_data *sdata = link->sdata;
3770         struct ieee80211_local *local = sdata->local;
3771
3772         lockdep_assert_wiphy(local->hw.wiphy);
3773
3774         /* AP might have been stopped while waiting for the lock. */
3775         if (!link->conf->csa_active)
3776                 return;
3777
3778         if (!ieee80211_sdata_running(sdata))
3779                 return;
3780
3781         ieee80211_csa_finalize(link);
3782 }
3783
3784 static int ieee80211_set_csa_beacon(struct ieee80211_link_data *link_data,
3785                                     struct cfg80211_csa_settings *params,
3786                                     u64 *changed)
3787 {
3788         struct ieee80211_sub_if_data *sdata = link_data->sdata;
3789         struct ieee80211_csa_settings csa = {};
3790         int err;
3791
3792         switch (sdata->vif.type) {
3793         case NL80211_IFTYPE_AP:
3794                 link_data->u.ap.next_beacon =
3795                         cfg80211_beacon_dup(&params->beacon_after);
3796                 if (!link_data->u.ap.next_beacon)
3797                         return -ENOMEM;
3798
3799                 /*
3800                  * With a count of 0, we don't have to wait for any
3801                  * TBTT before switching, so complete the CSA
3802                  * immediately.  In theory, with a count == 1 we
3803                  * should delay the switch until just before the next
3804                  * TBTT, but that would complicate things so we switch
3805                  * immediately too.  If we would delay the switch
3806                  * until the next TBTT, we would have to set the probe
3807                  * response here.
3808                  *
3809                  * TODO: A channel switch with count <= 1 without
3810                  * sending a CSA action frame is kind of useless,
3811                  * because the clients won't know we're changing
3812                  * channels.  The action frame must be implemented
3813                  * either here or in the userspace.
3814                  */
3815                 if (params->count <= 1)
3816                         break;
3817
3818                 if ((params->n_counter_offsets_beacon >
3819                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3820                     (params->n_counter_offsets_presp >
3821                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3822                         ieee80211_free_next_beacon(link_data);
3823                         return -EINVAL;
3824                 }
3825
3826                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3827                 csa.counter_offsets_presp = params->counter_offsets_presp;
3828                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3829                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3830                 csa.count = params->count;
3831
3832                 err = ieee80211_assign_beacon(sdata, link_data,
3833                                               &params->beacon_csa, &csa,
3834                                               NULL, changed);
3835                 if (err < 0) {
3836                         ieee80211_free_next_beacon(link_data);
3837                         return err;
3838                 }
3839
3840                 break;
3841         case NL80211_IFTYPE_ADHOC:
3842                 if (!sdata->vif.cfg.ibss_joined)
3843                         return -EINVAL;
3844
3845                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3846                         return -EINVAL;
3847
3848                 switch (params->chandef.width) {
3849                 case NL80211_CHAN_WIDTH_40:
3850                         if (cfg80211_get_chandef_type(&params->chandef) !=
3851                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3852                                 return -EINVAL;
3853                         break;
3854                 case NL80211_CHAN_WIDTH_5:
3855                 case NL80211_CHAN_WIDTH_10:
3856                 case NL80211_CHAN_WIDTH_20_NOHT:
3857                 case NL80211_CHAN_WIDTH_20:
3858                         break;
3859                 default:
3860                         return -EINVAL;
3861                 }
3862
3863                 /* changes into another band are not supported */
3864                 if (sdata->u.ibss.chandef.chan->band !=
3865                     params->chandef.chan->band)
3866                         return -EINVAL;
3867
3868                 /* see comments in the NL80211_IFTYPE_AP block */
3869                 if (params->count > 1) {
3870                         err = ieee80211_ibss_csa_beacon(sdata, params, changed);
3871                         if (err < 0)
3872                                 return err;
3873                 }
3874
3875                 ieee80211_send_action_csa(sdata, params);
3876
3877                 break;
3878 #ifdef CONFIG_MAC80211_MESH
3879         case NL80211_IFTYPE_MESH_POINT: {
3880                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3881
3882                 /* changes into another band are not supported */
3883                 if (sdata->vif.bss_conf.chanreq.oper.chan->band !=
3884                     params->chandef.chan->band)
3885                         return -EINVAL;
3886
3887                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3888                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3889                         if (!ifmsh->pre_value)
3890                                 ifmsh->pre_value = 1;
3891                         else
3892                                 ifmsh->pre_value++;
3893                 }
3894
3895                 /* see comments in the NL80211_IFTYPE_AP block */
3896                 if (params->count > 1) {
3897                         err = ieee80211_mesh_csa_beacon(sdata, params, changed);
3898                         if (err < 0) {
3899                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3900                                 return err;
3901                         }
3902                 }
3903
3904                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3905                         ieee80211_send_action_csa(sdata, params);
3906
3907                 break;
3908                 }
3909 #endif
3910         default:
3911                 return -EOPNOTSUPP;
3912         }
3913
3914         return 0;
3915 }
3916
3917 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data  *sdata)
3918 {
3919         sdata->vif.bss_conf.color_change_active = false;
3920
3921         ieee80211_free_next_beacon(&sdata->deflink);
3922
3923         cfg80211_color_change_aborted_notify(sdata->dev);
3924 }
3925
3926 static int
3927 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3928                            struct cfg80211_csa_settings *params)
3929 {
3930         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3931         struct ieee80211_chan_req chanreq = { .oper = params->chandef };
3932         struct ieee80211_local *local = sdata->local;
3933         struct ieee80211_channel_switch ch_switch = {
3934                 .link_id = params->link_id,
3935         };
3936         struct ieee80211_chanctx_conf *conf;
3937         struct ieee80211_chanctx *chanctx;
3938         struct ieee80211_bss_conf *link_conf;
3939         struct ieee80211_link_data *link_data;
3940         u64 changed = 0;
3941         u8 link_id = params->link_id;
3942         int err;
3943
3944         lockdep_assert_wiphy(local->hw.wiphy);
3945
3946         if (!list_empty(&local->roc_list) || local->scanning)
3947                 return -EBUSY;
3948
3949         if (sdata->wdev.cac_started)
3950                 return -EBUSY;
3951
3952         if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
3953                 return -EINVAL;
3954
3955         link_data = wiphy_dereference(wiphy, sdata->link[link_id]);
3956         if (!link_data)
3957                 return -ENOLINK;
3958
3959         link_conf = link_data->conf;
3960
3961         if (chanreq.oper.punctured && !link_conf->eht_support)
3962                 return -EINVAL;
3963
3964         /* don't allow another channel switch if one is already active. */
3965         if (link_conf->csa_active)
3966                 return -EBUSY;
3967
3968         conf = wiphy_dereference(wiphy, link_conf->chanctx_conf);
3969         if (!conf) {
3970                 err = -EBUSY;
3971                 goto out;
3972         }
3973
3974         if (params->chandef.chan->freq_offset) {
3975                 /* this may work, but is untested */
3976                 err = -EOPNOTSUPP;
3977                 goto out;
3978         }
3979
3980         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3981
3982         ch_switch.timestamp = 0;
3983         ch_switch.device_timestamp = 0;
3984         ch_switch.block_tx = params->block_tx;
3985         ch_switch.chandef = chanreq.oper;
3986         ch_switch.count = params->count;
3987
3988         err = drv_pre_channel_switch(sdata, &ch_switch);
3989         if (err)
3990                 goto out;
3991
3992         err = ieee80211_link_reserve_chanctx(link_data, &chanreq,
3993                                              chanctx->mode,
3994                                              params->radar_required);
3995         if (err)
3996                 goto out;
3997
3998         /* if reservation is invalid then this will fail */
3999         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
4000         if (err) {
4001                 ieee80211_link_unreserve_chanctx(link_data);
4002                 goto out;
4003         }
4004
4005         /* if there is a color change in progress, abort it */
4006         if (link_conf->color_change_active)
4007                 ieee80211_color_change_abort(sdata);
4008
4009         err = ieee80211_set_csa_beacon(link_data, params, &changed);
4010         if (err) {
4011                 ieee80211_link_unreserve_chanctx(link_data);
4012                 goto out;
4013         }
4014
4015         link_data->csa_chanreq = chanreq;
4016         link_conf->csa_active = true;
4017
4018         if (params->block_tx &&
4019             !ieee80211_hw_check(&local->hw, HANDLES_QUIET_CSA)) {
4020                 ieee80211_stop_vif_queues(local, sdata,
4021                                           IEEE80211_QUEUE_STOP_REASON_CSA);
4022                 sdata->csa_blocked_tx = true;
4023         }
4024
4025         cfg80211_ch_switch_started_notify(sdata->dev,
4026                                           &link_data->csa_chanreq.oper, 0,
4027                                           params->count, params->block_tx);
4028
4029         if (changed) {
4030                 ieee80211_link_info_change_notify(sdata, link_data, changed);
4031                 drv_channel_switch_beacon(sdata, &link_data->csa_chanreq.oper);
4032         } else {
4033                 /* if the beacon didn't change, we can finalize immediately */
4034                 ieee80211_csa_finalize(link_data);
4035         }
4036
4037 out:
4038         return err;
4039 }
4040
4041 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
4042                              struct cfg80211_csa_settings *params)
4043 {
4044         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4045         struct ieee80211_local *local = sdata->local;
4046
4047         lockdep_assert_wiphy(local->hw.wiphy);
4048
4049         return __ieee80211_channel_switch(wiphy, dev, params);
4050 }
4051
4052 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
4053 {
4054         lockdep_assert_wiphy(local->hw.wiphy);
4055
4056         local->roc_cookie_counter++;
4057
4058         /* wow, you wrapped 64 bits ... more likely a bug */
4059         if (WARN_ON(local->roc_cookie_counter == 0))
4060                 local->roc_cookie_counter++;
4061
4062         return local->roc_cookie_counter;
4063 }
4064
4065 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
4066                              u64 *cookie, gfp_t gfp)
4067 {
4068         unsigned long spin_flags;
4069         struct sk_buff *ack_skb;
4070         int id;
4071
4072         ack_skb = skb_copy(skb, gfp);
4073         if (!ack_skb)
4074                 return -ENOMEM;
4075
4076         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
4077         id = idr_alloc(&local->ack_status_frames, ack_skb,
4078                        1, 0x2000, GFP_ATOMIC);
4079         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
4080
4081         if (id < 0) {
4082                 kfree_skb(ack_skb);
4083                 return -ENOMEM;
4084         }
4085
4086         IEEE80211_SKB_CB(skb)->status_data_idr = 1;
4087         IEEE80211_SKB_CB(skb)->status_data = id;
4088
4089         *cookie = ieee80211_mgmt_tx_cookie(local);
4090         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
4091
4092         return 0;
4093 }
4094
4095 static void
4096 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
4097                                           struct wireless_dev *wdev,
4098                                           struct mgmt_frame_regs *upd)
4099 {
4100         struct ieee80211_local *local = wiphy_priv(wiphy);
4101         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4102         u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
4103         u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
4104         bool global_change, intf_change;
4105
4106         global_change =
4107                 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
4108                 (local->rx_mcast_action_reg !=
4109                  !!(upd->global_mcast_stypes & action_mask));
4110         local->probe_req_reg = upd->global_stypes & preq_mask;
4111         local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
4112
4113         intf_change = (sdata->vif.probe_req_reg !=
4114                        !!(upd->interface_stypes & preq_mask)) ||
4115                 (sdata->vif.rx_mcast_action_reg !=
4116                  !!(upd->interface_mcast_stypes & action_mask));
4117         sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
4118         sdata->vif.rx_mcast_action_reg =
4119                 upd->interface_mcast_stypes & action_mask;
4120
4121         if (!local->open_count)
4122                 return;
4123
4124         if (intf_change && ieee80211_sdata_running(sdata))
4125                 drv_config_iface_filter(local, sdata,
4126                                         sdata->vif.probe_req_reg ?
4127                                                 FIF_PROBE_REQ : 0,
4128                                         FIF_PROBE_REQ);
4129
4130         if (global_change)
4131                 ieee80211_configure_filter(local);
4132 }
4133
4134 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
4135 {
4136         struct ieee80211_local *local = wiphy_priv(wiphy);
4137         int ret;
4138
4139         if (local->started)
4140                 return -EOPNOTSUPP;
4141
4142         ret = drv_set_antenna(local, tx_ant, rx_ant);
4143         if (ret)
4144                 return ret;
4145
4146         local->rx_chains = hweight8(rx_ant);
4147         return 0;
4148 }
4149
4150 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
4151 {
4152         struct ieee80211_local *local = wiphy_priv(wiphy);
4153
4154         return drv_get_antenna(local, tx_ant, rx_ant);
4155 }
4156
4157 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
4158                                     struct net_device *dev,
4159                                     struct cfg80211_gtk_rekey_data *data)
4160 {
4161         struct ieee80211_local *local = wiphy_priv(wiphy);
4162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4163
4164         if (!local->ops->set_rekey_data)
4165                 return -EOPNOTSUPP;
4166
4167         drv_set_rekey_data(local, sdata, data);
4168
4169         return 0;
4170 }
4171
4172 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
4173                                   const u8 *peer, u64 *cookie)
4174 {
4175         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4176         struct ieee80211_local *local = sdata->local;
4177         struct ieee80211_qos_hdr *nullfunc;
4178         struct sk_buff *skb;
4179         int size = sizeof(*nullfunc);
4180         __le16 fc;
4181         bool qos;
4182         struct ieee80211_tx_info *info;
4183         struct sta_info *sta;
4184         struct ieee80211_chanctx_conf *chanctx_conf;
4185         enum nl80211_band band;
4186         int ret;
4187
4188         /* the lock is needed to assign the cookie later */
4189         lockdep_assert_wiphy(local->hw.wiphy);
4190
4191         rcu_read_lock();
4192         sta = sta_info_get_bss(sdata, peer);
4193         if (!sta) {
4194                 ret = -ENOLINK;
4195                 goto unlock;
4196         }
4197
4198         qos = sta->sta.wme;
4199
4200         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
4201         if (WARN_ON(!chanctx_conf)) {
4202                 ret = -EINVAL;
4203                 goto unlock;
4204         }
4205         band = chanctx_conf->def.chan->band;
4206
4207         if (qos) {
4208                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4209                                  IEEE80211_STYPE_QOS_NULLFUNC |
4210                                  IEEE80211_FCTL_FROMDS);
4211         } else {
4212                 size -= 2;
4213                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4214                                  IEEE80211_STYPE_NULLFUNC |
4215                                  IEEE80211_FCTL_FROMDS);
4216         }
4217
4218         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4219         if (!skb) {
4220                 ret = -ENOMEM;
4221                 goto unlock;
4222         }
4223
4224         skb->dev = dev;
4225
4226         skb_reserve(skb, local->hw.extra_tx_headroom);
4227
4228         nullfunc = skb_put(skb, size);
4229         nullfunc->frame_control = fc;
4230         nullfunc->duration_id = 0;
4231         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4232         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4233         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4234         nullfunc->seq_ctrl = 0;
4235
4236         info = IEEE80211_SKB_CB(skb);
4237
4238         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4239                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4240         info->band = band;
4241
4242         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4243         skb->priority = 7;
4244         if (qos)
4245                 nullfunc->qos_ctrl = cpu_to_le16(7);
4246
4247         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4248         if (ret) {
4249                 kfree_skb(skb);
4250                 goto unlock;
4251         }
4252
4253         local_bh_disable();
4254         ieee80211_xmit(sdata, sta, skb);
4255         local_bh_enable();
4256
4257         ret = 0;
4258 unlock:
4259         rcu_read_unlock();
4260
4261         return ret;
4262 }
4263
4264 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4265                                      struct wireless_dev *wdev,
4266                                      unsigned int link_id,
4267                                      struct cfg80211_chan_def *chandef)
4268 {
4269         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4270         struct ieee80211_local *local = wiphy_priv(wiphy);
4271         struct ieee80211_chanctx_conf *chanctx_conf;
4272         struct ieee80211_link_data *link;
4273         int ret = -ENODATA;
4274
4275         rcu_read_lock();
4276         link = rcu_dereference(sdata->link[link_id]);
4277         if (!link) {
4278                 ret = -ENOLINK;
4279                 goto out;
4280         }
4281
4282         chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4283         if (chanctx_conf) {
4284                 *chandef = link->conf->chanreq.oper;
4285                 ret = 0;
4286         } else if (local->open_count > 0 &&
4287                    local->open_count == local->monitors &&
4288                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4289                 *chandef = local->monitor_chanreq.oper;
4290                 ret = 0;
4291         }
4292 out:
4293         rcu_read_unlock();
4294
4295         return ret;
4296 }
4297
4298 #ifdef CONFIG_PM
4299 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4300 {
4301         drv_set_wakeup(wiphy_priv(wiphy), enabled);
4302 }
4303 #endif
4304
4305 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4306                                  struct net_device *dev,
4307                                  struct cfg80211_qos_map *qos_map)
4308 {
4309         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4310         struct mac80211_qos_map *new_qos_map, *old_qos_map;
4311
4312         if (qos_map) {
4313                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4314                 if (!new_qos_map)
4315                         return -ENOMEM;
4316                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4317         } else {
4318                 /* A NULL qos_map was passed to disable QoS mapping */
4319                 new_qos_map = NULL;
4320         }
4321
4322         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4323         rcu_assign_pointer(sdata->qos_map, new_qos_map);
4324         if (old_qos_map)
4325                 kfree_rcu(old_qos_map, rcu_head);
4326
4327         return 0;
4328 }
4329
4330 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4331                                       struct net_device *dev,
4332                                       unsigned int link_id,
4333                                       struct cfg80211_chan_def *chandef)
4334 {
4335         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4336         struct ieee80211_link_data *link;
4337         struct ieee80211_chan_req chanreq = { .oper = *chandef };
4338         int ret;
4339         u64 changed = 0;
4340
4341         link = sdata_dereference(sdata->link[link_id], sdata);
4342
4343         ret = ieee80211_link_change_chanreq(link, &chanreq, &changed);
4344         if (ret == 0)
4345                 ieee80211_link_info_change_notify(sdata, link, changed);
4346
4347         return ret;
4348 }
4349
4350 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4351                                u8 tsid, const u8 *peer, u8 up,
4352                                u16 admitted_time)
4353 {
4354         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4355         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4356         int ac = ieee802_1d_to_ac[up];
4357
4358         if (sdata->vif.type != NL80211_IFTYPE_STATION)
4359                 return -EOPNOTSUPP;
4360
4361         if (!(sdata->wmm_acm & BIT(up)))
4362                 return -EINVAL;
4363
4364         if (ifmgd->tx_tspec[ac].admitted_time)
4365                 return -EBUSY;
4366
4367         if (admitted_time) {
4368                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4369                 ifmgd->tx_tspec[ac].tsid = tsid;
4370                 ifmgd->tx_tspec[ac].up = up;
4371         }
4372
4373         return 0;
4374 }
4375
4376 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4377                                u8 tsid, const u8 *peer)
4378 {
4379         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4380         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4381         struct ieee80211_local *local = wiphy_priv(wiphy);
4382         int ac;
4383
4384         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4385                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4386
4387                 /* skip unused entries */
4388                 if (!tx_tspec->admitted_time)
4389                         continue;
4390
4391                 if (tx_tspec->tsid != tsid)
4392                         continue;
4393
4394                 /* due to this new packets will be reassigned to non-ACM ACs */
4395                 tx_tspec->up = -1;
4396
4397                 /* Make sure that all packets have been sent to avoid to
4398                  * restore the QoS params on packets that are still on the
4399                  * queues.
4400                  */
4401                 synchronize_net();
4402                 ieee80211_flush_queues(local, sdata, false);
4403
4404                 /* restore the normal QoS parameters
4405                  * (unconditionally to avoid races)
4406                  */
4407                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4408                 tx_tspec->downgraded = false;
4409                 ieee80211_sta_handle_tspec_ac_params(sdata);
4410
4411                 /* finally clear all the data */
4412                 memset(tx_tspec, 0, sizeof(*tx_tspec));
4413
4414                 return 0;
4415         }
4416
4417         return -ENOENT;
4418 }
4419
4420 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4421                                    u8 inst_id,
4422                                    enum nl80211_nan_func_term_reason reason,
4423                                    gfp_t gfp)
4424 {
4425         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4426         struct cfg80211_nan_func *func;
4427         u64 cookie;
4428
4429         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4430                 return;
4431
4432         spin_lock_bh(&sdata->u.nan.func_lock);
4433
4434         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4435         if (WARN_ON(!func)) {
4436                 spin_unlock_bh(&sdata->u.nan.func_lock);
4437                 return;
4438         }
4439
4440         cookie = func->cookie;
4441         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4442
4443         spin_unlock_bh(&sdata->u.nan.func_lock);
4444
4445         cfg80211_free_nan_func(func);
4446
4447         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4448                                      reason, cookie, gfp);
4449 }
4450 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4451
4452 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4453                               struct cfg80211_nan_match_params *match,
4454                               gfp_t gfp)
4455 {
4456         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4457         struct cfg80211_nan_func *func;
4458
4459         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4460                 return;
4461
4462         spin_lock_bh(&sdata->u.nan.func_lock);
4463
4464         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
4465         if (WARN_ON(!func)) {
4466                 spin_unlock_bh(&sdata->u.nan.func_lock);
4467                 return;
4468         }
4469         match->cookie = func->cookie;
4470
4471         spin_unlock_bh(&sdata->u.nan.func_lock);
4472
4473         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4474 }
4475 EXPORT_SYMBOL(ieee80211_nan_func_match);
4476
4477 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4478                                               struct net_device *dev,
4479                                               const bool enabled)
4480 {
4481         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4482
4483         sdata->u.ap.multicast_to_unicast = enabled;
4484
4485         return 0;
4486 }
4487
4488 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4489                               struct txq_info *txqi)
4490 {
4491         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4492                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4493                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4494         }
4495
4496         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4497                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4498                 txqstats->backlog_packets = txqi->tin.backlog_packets;
4499         }
4500
4501         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4502                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4503                 txqstats->flows = txqi->tin.flows;
4504         }
4505
4506         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4507                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4508                 txqstats->drops = txqi->cstats.drop_count;
4509         }
4510
4511         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4512                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4513                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4514         }
4515
4516         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4517                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4518                 txqstats->overlimit = txqi->tin.overlimit;
4519         }
4520
4521         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4522                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4523                 txqstats->collisions = txqi->tin.collisions;
4524         }
4525
4526         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4527                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4528                 txqstats->tx_bytes = txqi->tin.tx_bytes;
4529         }
4530
4531         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4532                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4533                 txqstats->tx_packets = txqi->tin.tx_packets;
4534         }
4535 }
4536
4537 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4538                                    struct wireless_dev *wdev,
4539                                    struct cfg80211_txq_stats *txqstats)
4540 {
4541         struct ieee80211_local *local = wiphy_priv(wiphy);
4542         struct ieee80211_sub_if_data *sdata;
4543         int ret = 0;
4544
4545         spin_lock_bh(&local->fq.lock);
4546         rcu_read_lock();
4547
4548         if (wdev) {
4549                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4550                 if (!sdata->vif.txq) {
4551                         ret = 1;
4552                         goto out;
4553                 }
4554                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4555         } else {
4556                 /* phy stats */
4557                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4558                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4559                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4560                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4561                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
4562                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4563                 txqstats->backlog_packets = local->fq.backlog;
4564                 txqstats->backlog_bytes = local->fq.memory_usage;
4565                 txqstats->overlimit = local->fq.overlimit;
4566                 txqstats->overmemory = local->fq.overmemory;
4567                 txqstats->collisions = local->fq.collisions;
4568                 txqstats->max_flows = local->fq.flows_cnt;
4569         }
4570
4571 out:
4572         rcu_read_unlock();
4573         spin_unlock_bh(&local->fq.lock);
4574
4575         return ret;
4576 }
4577
4578 static int
4579 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4580                                   struct net_device *dev,
4581                                   struct cfg80211_ftm_responder_stats *ftm_stats)
4582 {
4583         struct ieee80211_local *local = wiphy_priv(wiphy);
4584         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4585
4586         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4587 }
4588
4589 static int
4590 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4591                      struct cfg80211_pmsr_request *request)
4592 {
4593         struct ieee80211_local *local = wiphy_priv(wiphy);
4594         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4595
4596         return drv_start_pmsr(local, sdata, request);
4597 }
4598
4599 static void
4600 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4601                      struct cfg80211_pmsr_request *request)
4602 {
4603         struct ieee80211_local *local = wiphy_priv(wiphy);
4604         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4605
4606         return drv_abort_pmsr(local, sdata, request);
4607 }
4608
4609 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4610                                     struct net_device *dev,
4611                                     struct cfg80211_tid_config *tid_conf)
4612 {
4613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4614         struct sta_info *sta;
4615
4616         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4617
4618         if (!sdata->local->ops->set_tid_config)
4619                 return -EOPNOTSUPP;
4620
4621         if (!tid_conf->peer)
4622                 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4623
4624         sta = sta_info_get_bss(sdata, tid_conf->peer);
4625         if (!sta)
4626                 return -ENOENT;
4627
4628         return drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4629 }
4630
4631 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4632                                       struct net_device *dev,
4633                                       const u8 *peer, u8 tids)
4634 {
4635         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4636         struct sta_info *sta;
4637
4638         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4639
4640         if (!sdata->local->ops->reset_tid_config)
4641                 return -EOPNOTSUPP;
4642
4643         if (!peer)
4644                 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4645
4646         sta = sta_info_get_bss(sdata, peer);
4647         if (!sta)
4648                 return -ENOENT;
4649
4650         return drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4651 }
4652
4653 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4654                                    struct cfg80211_sar_specs *sar)
4655 {
4656         struct ieee80211_local *local = wiphy_priv(wiphy);
4657
4658         if (!local->ops->set_sar_specs)
4659                 return -EOPNOTSUPP;
4660
4661         return local->ops->set_sar_specs(&local->hw, sar);
4662 }
4663
4664 static int
4665 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4666                                         u64 *changed)
4667 {
4668         switch (sdata->vif.type) {
4669         case NL80211_IFTYPE_AP: {
4670                 int ret;
4671
4672                 if (!sdata->deflink.u.ap.next_beacon)
4673                         return -EINVAL;
4674
4675                 ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4676                                               sdata->deflink.u.ap.next_beacon,
4677                                               NULL, NULL, changed);
4678                 ieee80211_free_next_beacon(&sdata->deflink);
4679
4680                 if (ret < 0)
4681                         return ret;
4682
4683                 break;
4684         }
4685         default:
4686                 WARN_ON_ONCE(1);
4687                 return -EINVAL;
4688         }
4689
4690         return 0;
4691 }
4692
4693 static int
4694 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4695                                   struct cfg80211_color_change_settings *params,
4696                                   u64 *changed)
4697 {
4698         struct ieee80211_color_change_settings color_change = {};
4699         int err;
4700
4701         switch (sdata->vif.type) {
4702         case NL80211_IFTYPE_AP:
4703                 sdata->deflink.u.ap.next_beacon =
4704                         cfg80211_beacon_dup(&params->beacon_next);
4705                 if (!sdata->deflink.u.ap.next_beacon)
4706                         return -ENOMEM;
4707
4708                 if (params->count <= 1)
4709                         break;
4710
4711                 color_change.counter_offset_beacon =
4712                         params->counter_offset_beacon;
4713                 color_change.counter_offset_presp =
4714                         params->counter_offset_presp;
4715                 color_change.count = params->count;
4716
4717                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4718                                               &params->beacon_color_change,
4719                                               NULL, &color_change, changed);
4720                 if (err < 0) {
4721                         ieee80211_free_next_beacon(&sdata->deflink);
4722                         return err;
4723                 }
4724                 break;
4725         default:
4726                 return -EOPNOTSUPP;
4727         }
4728
4729         return 0;
4730 }
4731
4732 static void
4733 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4734                                          u8 color, int enable, u64 changed)
4735 {
4736         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4737
4738         sdata->vif.bss_conf.he_bss_color.color = color;
4739         sdata->vif.bss_conf.he_bss_color.enabled = enable;
4740         changed |= BSS_CHANGED_HE_BSS_COLOR;
4741
4742         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4743
4744         if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4745                 struct ieee80211_sub_if_data *child;
4746
4747                 list_for_each_entry(child, &sdata->local->interfaces, list) {
4748                         if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4749                                 child->vif.bss_conf.he_bss_color.color = color;
4750                                 child->vif.bss_conf.he_bss_color.enabled = enable;
4751                                 ieee80211_link_info_change_notify(child,
4752                                                                   &child->deflink,
4753                                                                   BSS_CHANGED_HE_BSS_COLOR);
4754                         }
4755                 }
4756         }
4757 }
4758
4759 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4760 {
4761         struct ieee80211_local *local = sdata->local;
4762         u64 changed = 0;
4763         int err;
4764
4765         lockdep_assert_wiphy(local->hw.wiphy);
4766
4767         sdata->vif.bss_conf.color_change_active = false;
4768
4769         err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4770         if (err) {
4771                 cfg80211_color_change_aborted_notify(sdata->dev);
4772                 return err;
4773         }
4774
4775         ieee80211_color_change_bss_config_notify(sdata,
4776                                                  sdata->vif.bss_conf.color_change_color,
4777                                                  1, changed);
4778         cfg80211_color_change_notify(sdata->dev);
4779
4780         return 0;
4781 }
4782
4783 void ieee80211_color_change_finalize_work(struct wiphy *wiphy,
4784                                           struct wiphy_work *work)
4785 {
4786         struct ieee80211_sub_if_data *sdata =
4787                 container_of(work, struct ieee80211_sub_if_data,
4788                              deflink.color_change_finalize_work);
4789         struct ieee80211_local *local = sdata->local;
4790
4791         lockdep_assert_wiphy(local->hw.wiphy);
4792
4793         /* AP might have been stopped while waiting for the lock. */
4794         if (!sdata->vif.bss_conf.color_change_active)
4795                 return;
4796
4797         if (!ieee80211_sdata_running(sdata))
4798                 return;
4799
4800         ieee80211_color_change_finalize(sdata);
4801 }
4802
4803 void ieee80211_color_collision_detection_work(struct work_struct *work)
4804 {
4805         struct delayed_work *delayed_work = to_delayed_work(work);
4806         struct ieee80211_link_data *link =
4807                 container_of(delayed_work, struct ieee80211_link_data,
4808                              color_collision_detect_work);
4809         struct ieee80211_sub_if_data *sdata = link->sdata;
4810
4811         cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap);
4812 }
4813
4814 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4815 {
4816         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4817
4818         wiphy_work_queue(sdata->local->hw.wiphy,
4819                          &sdata->deflink.color_change_finalize_work);
4820 }
4821 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4822
4823 void
4824 ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4825                                       u64 color_bitmap)
4826 {
4827         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4828         struct ieee80211_link_data *link = &sdata->deflink;
4829
4830         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4831                 return;
4832
4833         if (delayed_work_pending(&link->color_collision_detect_work))
4834                 return;
4835
4836         link->color_bitmap = color_bitmap;
4837         /* queue the color collision detection event every 500 ms in order to
4838          * avoid sending too much netlink messages to userspace.
4839          */
4840         ieee80211_queue_delayed_work(&sdata->local->hw,
4841                                      &link->color_collision_detect_work,
4842                                      msecs_to_jiffies(500));
4843 }
4844 EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify);
4845
4846 static int
4847 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4848                        struct cfg80211_color_change_settings *params)
4849 {
4850         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4851         struct ieee80211_local *local = sdata->local;
4852         u64 changed = 0;
4853         int err;
4854
4855         lockdep_assert_wiphy(local->hw.wiphy);
4856
4857         if (sdata->vif.bss_conf.nontransmitted)
4858                 return -EINVAL;
4859
4860         /* don't allow another color change if one is already active or if csa
4861          * is active
4862          */
4863         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4864                 err = -EBUSY;
4865                 goto out;
4866         }
4867
4868         err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4869         if (err)
4870                 goto out;
4871
4872         sdata->vif.bss_conf.color_change_active = true;
4873         sdata->vif.bss_conf.color_change_color = params->color;
4874
4875         cfg80211_color_change_started_notify(sdata->dev, params->count);
4876
4877         if (changed)
4878                 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4879         else
4880                 /* if the beacon didn't change, we can finalize immediately */
4881                 ieee80211_color_change_finalize(sdata);
4882
4883 out:
4884
4885         return err;
4886 }
4887
4888 static int
4889 ieee80211_set_radar_background(struct wiphy *wiphy,
4890                                struct cfg80211_chan_def *chandef)
4891 {
4892         struct ieee80211_local *local = wiphy_priv(wiphy);
4893
4894         if (!local->ops->set_radar_background)
4895                 return -EOPNOTSUPP;
4896
4897         return local->ops->set_radar_background(&local->hw, chandef);
4898 }
4899
4900 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4901                                    struct wireless_dev *wdev,
4902                                    unsigned int link_id)
4903 {
4904         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4905
4906         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4907
4908         if (wdev->use_4addr)
4909                 return -EOPNOTSUPP;
4910
4911         return ieee80211_vif_set_links(sdata, wdev->valid_links, 0);
4912 }
4913
4914 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4915                                     struct wireless_dev *wdev,
4916                                     unsigned int link_id)
4917 {
4918         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4919
4920         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4921
4922         ieee80211_vif_set_links(sdata, wdev->valid_links, 0);
4923 }
4924
4925 static int sta_add_link_station(struct ieee80211_local *local,
4926                                 struct ieee80211_sub_if_data *sdata,
4927                                 struct link_station_parameters *params)
4928 {
4929         struct sta_info *sta;
4930         int ret;
4931
4932         sta = sta_info_get_bss(sdata, params->mld_mac);
4933         if (!sta)
4934                 return -ENOENT;
4935
4936         if (!sta->sta.valid_links)
4937                 return -EINVAL;
4938
4939         if (sta->sta.valid_links & BIT(params->link_id))
4940                 return -EALREADY;
4941
4942         ret = ieee80211_sta_allocate_link(sta, params->link_id);
4943         if (ret)
4944                 return ret;
4945
4946         ret = sta_link_apply_parameters(local, sta, true, params);
4947         if (ret) {
4948                 ieee80211_sta_free_link(sta, params->link_id);
4949                 return ret;
4950         }
4951
4952         /* ieee80211_sta_activate_link frees the link upon failure */
4953         return ieee80211_sta_activate_link(sta, params->link_id);
4954 }
4955
4956 static int
4957 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4958                            struct link_station_parameters *params)
4959 {
4960         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4961         struct ieee80211_local *local = wiphy_priv(wiphy);
4962
4963         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4964
4965         return sta_add_link_station(local, sdata, params);
4966 }
4967
4968 static int sta_mod_link_station(struct ieee80211_local *local,
4969                                 struct ieee80211_sub_if_data *sdata,
4970                                 struct link_station_parameters *params)
4971 {
4972         struct sta_info *sta;
4973
4974         sta = sta_info_get_bss(sdata, params->mld_mac);
4975         if (!sta)
4976                 return -ENOENT;
4977
4978         if (!(sta->sta.valid_links & BIT(params->link_id)))
4979                 return -EINVAL;
4980
4981         return sta_link_apply_parameters(local, sta, false, params);
4982 }
4983
4984 static int
4985 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4986                            struct link_station_parameters *params)
4987 {
4988         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4989         struct ieee80211_local *local = wiphy_priv(wiphy);
4990
4991         lockdep_assert_wiphy(sdata->local->hw.wiphy);
4992
4993         return sta_mod_link_station(local, sdata, params);
4994 }
4995
4996 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4997                                 struct link_station_del_parameters *params)
4998 {
4999         struct sta_info *sta;
5000
5001         sta = sta_info_get_bss(sdata, params->mld_mac);
5002         if (!sta)
5003                 return -ENOENT;
5004
5005         if (!(sta->sta.valid_links & BIT(params->link_id)))
5006                 return -EINVAL;
5007
5008         /* must not create a STA without links */
5009         if (sta->sta.valid_links == BIT(params->link_id))
5010                 return -EINVAL;
5011
5012         ieee80211_sta_remove_link(sta, params->link_id);
5013
5014         return 0;
5015 }
5016
5017 static int
5018 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
5019                            struct link_station_del_parameters *params)
5020 {
5021         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5022
5023         lockdep_assert_wiphy(sdata->local->hw.wiphy);
5024
5025         return sta_del_link_station(sdata, params);
5026 }
5027
5028 static int ieee80211_set_hw_timestamp(struct wiphy *wiphy,
5029                                       struct net_device *dev,
5030                                       struct cfg80211_set_hw_timestamp *hwts)
5031 {
5032         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5033         struct ieee80211_local *local = sdata->local;
5034
5035         if (!local->ops->set_hw_timestamp)
5036                 return -EOPNOTSUPP;
5037
5038         if (!check_sdata_in_driver(sdata))
5039                 return -EIO;
5040
5041         return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts);
5042 }
5043
5044 static int
5045 ieee80211_set_ttlm(struct wiphy *wiphy, struct net_device *dev,
5046                    struct cfg80211_ttlm_params *params)
5047 {
5048         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5049
5050         lockdep_assert_wiphy(sdata->local->hw.wiphy);
5051
5052         return ieee80211_req_neg_ttlm(sdata, params);
5053 }
5054
5055 const struct cfg80211_ops mac80211_config_ops = {
5056         .add_virtual_intf = ieee80211_add_iface,
5057         .del_virtual_intf = ieee80211_del_iface,
5058         .change_virtual_intf = ieee80211_change_iface,
5059         .start_p2p_device = ieee80211_start_p2p_device,
5060         .stop_p2p_device = ieee80211_stop_p2p_device,
5061         .add_key = ieee80211_add_key,
5062         .del_key = ieee80211_del_key,
5063         .get_key = ieee80211_get_key,
5064         .set_default_key = ieee80211_config_default_key,
5065         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
5066         .set_default_beacon_key = ieee80211_config_default_beacon_key,
5067         .start_ap = ieee80211_start_ap,
5068         .change_beacon = ieee80211_change_beacon,
5069         .stop_ap = ieee80211_stop_ap,
5070         .add_station = ieee80211_add_station,
5071         .del_station = ieee80211_del_station,
5072         .change_station = ieee80211_change_station,
5073         .get_station = ieee80211_get_station,
5074         .dump_station = ieee80211_dump_station,
5075         .dump_survey = ieee80211_dump_survey,
5076 #ifdef CONFIG_MAC80211_MESH
5077         .add_mpath = ieee80211_add_mpath,
5078         .del_mpath = ieee80211_del_mpath,
5079         .change_mpath = ieee80211_change_mpath,
5080         .get_mpath = ieee80211_get_mpath,
5081         .dump_mpath = ieee80211_dump_mpath,
5082         .get_mpp = ieee80211_get_mpp,
5083         .dump_mpp = ieee80211_dump_mpp,
5084         .update_mesh_config = ieee80211_update_mesh_config,
5085         .get_mesh_config = ieee80211_get_mesh_config,
5086         .join_mesh = ieee80211_join_mesh,
5087         .leave_mesh = ieee80211_leave_mesh,
5088 #endif
5089         .join_ocb = ieee80211_join_ocb,
5090         .leave_ocb = ieee80211_leave_ocb,
5091         .change_bss = ieee80211_change_bss,
5092         .inform_bss = ieee80211_inform_bss,
5093         .set_txq_params = ieee80211_set_txq_params,
5094         .set_monitor_channel = ieee80211_set_monitor_channel,
5095         .suspend = ieee80211_suspend,
5096         .resume = ieee80211_resume,
5097         .scan = ieee80211_scan,
5098         .abort_scan = ieee80211_abort_scan,
5099         .sched_scan_start = ieee80211_sched_scan_start,
5100         .sched_scan_stop = ieee80211_sched_scan_stop,
5101         .auth = ieee80211_auth,
5102         .assoc = ieee80211_assoc,
5103         .deauth = ieee80211_deauth,
5104         .disassoc = ieee80211_disassoc,
5105         .join_ibss = ieee80211_join_ibss,
5106         .leave_ibss = ieee80211_leave_ibss,
5107         .set_mcast_rate = ieee80211_set_mcast_rate,
5108         .set_wiphy_params = ieee80211_set_wiphy_params,
5109         .set_tx_power = ieee80211_set_tx_power,
5110         .get_tx_power = ieee80211_get_tx_power,
5111         .rfkill_poll = ieee80211_rfkill_poll,
5112         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
5113         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
5114         .set_power_mgmt = ieee80211_set_power_mgmt,
5115         .set_bitrate_mask = ieee80211_set_bitrate_mask,
5116         .remain_on_channel = ieee80211_remain_on_channel,
5117         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
5118         .mgmt_tx = ieee80211_mgmt_tx,
5119         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
5120         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
5121         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
5122         .update_mgmt_frame_registrations =
5123                 ieee80211_update_mgmt_frame_registrations,
5124         .set_antenna = ieee80211_set_antenna,
5125         .get_antenna = ieee80211_get_antenna,
5126         .set_rekey_data = ieee80211_set_rekey_data,
5127         .tdls_oper = ieee80211_tdls_oper,
5128         .tdls_mgmt = ieee80211_tdls_mgmt,
5129         .tdls_channel_switch = ieee80211_tdls_channel_switch,
5130         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
5131         .probe_client = ieee80211_probe_client,
5132         .set_noack_map = ieee80211_set_noack_map,
5133 #ifdef CONFIG_PM
5134         .set_wakeup = ieee80211_set_wakeup,
5135 #endif
5136         .get_channel = ieee80211_cfg_get_channel,
5137         .start_radar_detection = ieee80211_start_radar_detection,
5138         .end_cac = ieee80211_end_cac,
5139         .channel_switch = ieee80211_channel_switch,
5140         .set_qos_map = ieee80211_set_qos_map,
5141         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
5142         .add_tx_ts = ieee80211_add_tx_ts,
5143         .del_tx_ts = ieee80211_del_tx_ts,
5144         .start_nan = ieee80211_start_nan,
5145         .stop_nan = ieee80211_stop_nan,
5146         .nan_change_conf = ieee80211_nan_change_conf,
5147         .add_nan_func = ieee80211_add_nan_func,
5148         .del_nan_func = ieee80211_del_nan_func,
5149         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
5150         .tx_control_port = ieee80211_tx_control_port,
5151         .get_txq_stats = ieee80211_get_txq_stats,
5152         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
5153         .start_pmsr = ieee80211_start_pmsr,
5154         .abort_pmsr = ieee80211_abort_pmsr,
5155         .probe_mesh_link = ieee80211_probe_mesh_link,
5156         .set_tid_config = ieee80211_set_tid_config,
5157         .reset_tid_config = ieee80211_reset_tid_config,
5158         .set_sar_specs = ieee80211_set_sar_specs,
5159         .color_change = ieee80211_color_change,
5160         .set_radar_background = ieee80211_set_radar_background,
5161         .add_intf_link = ieee80211_add_intf_link,
5162         .del_intf_link = ieee80211_del_intf_link,
5163         .add_link_station = ieee80211_add_link_station,
5164         .mod_link_station = ieee80211_mod_link_station,
5165         .del_link_station = ieee80211_del_link_station,
5166         .set_hw_timestamp = ieee80211_set_hw_timestamp,
5167         .set_ttlm = ieee80211_set_ttlm,
5168 };