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) 2018-2022 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 && sdata->vif.valid_links)
  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         ret = ieee80211_if_change_type(sdata, type);
 218         if (ret)
 219                 return ret;
 220
 221         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 222                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 223                 ieee80211_check_fast_rx_iface(sdata);
 224         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 225                 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 226
 227                 if (params->use_4addr == ifmgd->use_4addr)
 228                         return 0;
 229
 230                 /* FIXME: no support for 4-addr MLO yet */
 231                 if (sdata->vif.valid_links)
 232                         return -EOPNOTSUPP;
 233
 234                 sdata->u.mgd.use_4addr = params->use_4addr;
 235                 if (!ifmgd->associated)
 236                         return 0;
 237
 238                 mutex_lock(&local->sta_mtx);
 239                 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
 240                 if (sta)
 241                         drv_sta_set_4addr(local, sdata, &sta->sta,
 242                                           params->use_4addr);
 243                 mutex_unlock(&local->sta_mtx);
 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         mutex_lock(&sdata->local->chanctx_mtx);
 265         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 266         mutex_unlock(&sdata->local->chanctx_mtx);
 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         mutex_lock(&sdata->local->chanctx_mtx);
 287         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 288         mutex_unlock(&sdata->local->chanctx_mtx);
 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         mutex_lock(&local->key_mtx);
 456         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 457
 458         if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
 459                 ret = ieee80211_set_tx_key(key);
 460
 461         mutex_unlock(&local->key_mtx);
 462         return ret;
 463 }
 464
 465 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 466                              int link_id, u8 key_idx, bool pairwise,
 467                              const u8 *mac_addr, struct key_params *params)
 468 {
 469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470         struct ieee80211_link_data *link =
 471                 ieee80211_link_or_deflink(sdata, link_id, false);
 472         struct ieee80211_local *local = sdata->local;
 473         struct sta_info *sta = NULL;
 474         struct ieee80211_key *key;
 475         int err;
 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         mutex_lock(&local->sta_mtx);
 514
 515         if (mac_addr) {
 516                 sta = sta_info_get_bss(sdata, mac_addr);
 517                 /*
 518                  * The ASSOC test makes sure the driver is ready to
 519                  * receive the key. When wpa_supplicant has roamed
 520                  * using FT, it attempts to set the key before
 521                  * association has completed, this rejects that attempt
 522                  * so it will set the key again after association.
 523                  *
 524                  * TODO: accept the key if we have a station entry and
 525                  *       add it to the device after the station.
 526                  */
 527                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 528                         ieee80211_key_free_unused(key);
 529                         err = -ENOENT;
 530                         goto out_unlock;
 531                 }
 532         }
 533
 534         switch (sdata->vif.type) {
 535         case NL80211_IFTYPE_STATION:
 536                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 537                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 538                 break;
 539         case NL80211_IFTYPE_AP:
 540         case NL80211_IFTYPE_AP_VLAN:
 541                 /* Keys without a station are used for TX only */
 542                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 543                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 544                 break;
 545         case NL80211_IFTYPE_ADHOC:
 546                 /* no MFP (yet) */
 547                 break;
 548         case NL80211_IFTYPE_MESH_POINT:
 549 #ifdef CONFIG_MAC80211_MESH
 550                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 551                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 552                 break;
 553 #endif
 554         case NL80211_IFTYPE_WDS:
 555         case NL80211_IFTYPE_MONITOR:
 556         case NL80211_IFTYPE_P2P_DEVICE:
 557         case NL80211_IFTYPE_NAN:
 558         case NL80211_IFTYPE_UNSPECIFIED:
 559         case NUM_NL80211_IFTYPES:
 560         case NL80211_IFTYPE_P2P_CLIENT:
 561         case NL80211_IFTYPE_P2P_GO:
 562         case NL80211_IFTYPE_OCB:
 563                 /* shouldn't happen */
 564                 WARN_ON_ONCE(1);
 565                 break;
 566         }
 567
 568         err = ieee80211_key_link(key, link, sta);
 569
 570  out_unlock:
 571         mutex_unlock(&local->sta_mtx);
 572
 573         return err;
 574 }
 575
 576 static struct ieee80211_key *
 577 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
 578                      u8 key_idx, bool pairwise, const u8 *mac_addr)
 579 {
 580         struct ieee80211_local *local __maybe_unused = sdata->local;
 581         struct ieee80211_link_data *link = &sdata->deflink;
 582         struct ieee80211_key *key;
 583
 584         if (link_id >= 0) {
 585                 link = rcu_dereference_check(sdata->link[link_id],
 586                                              lockdep_is_held(&sdata->wdev.mtx));
 587                 if (!link)
 588                         return NULL;
 589         }
 590
 591         if (mac_addr) {
 592                 struct sta_info *sta;
 593                 struct link_sta_info *link_sta;
 594
 595                 sta = sta_info_get_bss(sdata, mac_addr);
 596                 if (!sta)
 597                         return NULL;
 598
 599                 if (link_id >= 0) {
 600                         link_sta = rcu_dereference_check(sta->link[link_id],
 601                                                          lockdep_is_held(&local->sta_mtx));
 602                         if (!link_sta)
 603                                 return NULL;
 604                 } else {
 605                         link_sta = &sta->deflink;
 606                 }
 607
 608                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 609                         return rcu_dereference_check_key_mtx(local,
 610                                                              sta->ptk[key_idx]);
 611
 612                 if (!pairwise &&
 613                     key_idx < NUM_DEFAULT_KEYS +
 614                               NUM_DEFAULT_MGMT_KEYS +
 615                               NUM_DEFAULT_BEACON_KEYS)
 616                         return rcu_dereference_check_key_mtx(local,
 617                                                              link_sta->gtk[key_idx]);
 618
 619                 return NULL;
 620         }
 621
 622         if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 623                 return rcu_dereference_check_key_mtx(local,
 624                                                      sdata->keys[key_idx]);
 625
 626         key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
 627         if (key)
 628                 return key;
 629
 630         /* or maybe it was a WEP key */
 631         if (key_idx < NUM_DEFAULT_KEYS)
 632                 return rcu_dereference_check_key_mtx(local, sdata->keys[key_idx]);
 633
 634         return NULL;
 635 }
 636
 637 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 638                              int link_id, u8 key_idx, bool pairwise,
 639                              const u8 *mac_addr)
 640 {
 641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 642         struct ieee80211_local *local = sdata->local;
 643         struct ieee80211_key *key;
 644         int ret;
 645
 646         mutex_lock(&local->sta_mtx);
 647         mutex_lock(&local->key_mtx);
 648
 649         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 650         if (!key) {
 651                 ret = -ENOENT;
 652                 goto out_unlock;
 653         }
 654
 655         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 656
 657         ret = 0;
 658  out_unlock:
 659         mutex_unlock(&local->key_mtx);
 660         mutex_unlock(&local->sta_mtx);
 661
 662         return ret;
 663 }
 664
 665 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 666                              int link_id, u8 key_idx, bool pairwise,
 667                              const u8 *mac_addr, void *cookie,
 668                              void (*callback)(void *cookie,
 669                                               struct key_params *params))
 670 {
 671         struct ieee80211_sub_if_data *sdata;
 672         u8 seq[6] = {0};
 673         struct key_params params;
 674         struct ieee80211_key *key;
 675         u64 pn64;
 676         u32 iv32;
 677         u16 iv16;
 678         int err = -ENOENT;
 679         struct ieee80211_key_seq kseq = {};
 680
 681         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 682
 683         rcu_read_lock();
 684
 685         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 686         if (!key)
 687                 goto out;
 688
 689         memset(&params, 0, sizeof(params));
 690
 691         params.cipher = key->conf.cipher;
 692
 693         switch (key->conf.cipher) {
 694         case WLAN_CIPHER_SUITE_TKIP:
 695                 pn64 = atomic64_read(&key->conf.tx_pn);
 696                 iv32 = TKIP_PN_TO_IV32(pn64);
 697                 iv16 = TKIP_PN_TO_IV16(pn64);
 698
 699                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 700                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 701                         drv_get_key_seq(sdata->local, key, &kseq);
 702                         iv32 = kseq.tkip.iv32;
 703                         iv16 = kseq.tkip.iv16;
 704                 }
 705
 706                 seq[0] = iv16 & 0xff;
 707                 seq[1] = (iv16 >> 8) & 0xff;
 708                 seq[2] = iv32 & 0xff;
 709                 seq[3] = (iv32 >> 8) & 0xff;
 710                 seq[4] = (iv32 >> 16) & 0xff;
 711                 seq[5] = (iv32 >> 24) & 0xff;
 712                 params.seq = seq;
 713                 params.seq_len = 6;
 714                 break;
 715         case WLAN_CIPHER_SUITE_CCMP:
 716         case WLAN_CIPHER_SUITE_CCMP_256:
 717         case WLAN_CIPHER_SUITE_AES_CMAC:
 718         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 719                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 720                              offsetof(typeof(kseq), aes_cmac));
 721                 fallthrough;
 722         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 723         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 724                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 725                              offsetof(typeof(kseq), aes_gmac));
 726                 fallthrough;
 727         case WLAN_CIPHER_SUITE_GCMP:
 728         case WLAN_CIPHER_SUITE_GCMP_256:
 729                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 730                              offsetof(typeof(kseq), gcmp));
 731
 732                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 733                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 734                         drv_get_key_seq(sdata->local, key, &kseq);
 735                         memcpy(seq, kseq.ccmp.pn, 6);
 736                 } else {
 737                         pn64 = atomic64_read(&key->conf.tx_pn);
 738                         seq[0] = pn64;
 739                         seq[1] = pn64 >> 8;
 740                         seq[2] = pn64 >> 16;
 741                         seq[3] = pn64 >> 24;
 742                         seq[4] = pn64 >> 32;
 743                         seq[5] = pn64 >> 40;
 744                 }
 745                 params.seq = seq;
 746                 params.seq_len = 6;
 747                 break;
 748         default:
 749                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 750                         break;
 751                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 752                         break;
 753                 drv_get_key_seq(sdata->local, key, &kseq);
 754                 params.seq = kseq.hw.seq;
 755                 params.seq_len = kseq.hw.seq_len;
 756                 break;
 757         }
 758
 759         params.key = key->conf.key;
 760         params.key_len = key->conf.keylen;
 761
 762         callback(cookie, &params);
 763         err = 0;
 764
 765  out:
 766         rcu_read_unlock();
 767         return err;
 768 }
 769
 770 static int ieee80211_config_default_key(struct wiphy *wiphy,
 771                                         struct net_device *dev,
 772                                         int link_id, u8 key_idx, bool uni,
 773                                         bool multi)
 774 {
 775         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 776         struct ieee80211_link_data *link =
 777                 ieee80211_link_or_deflink(sdata, link_id, false);
 778
 779         if (IS_ERR(link))
 780                 return PTR_ERR(link);
 781
 782         ieee80211_set_default_key(link, key_idx, uni, multi);
 783
 784         return 0;
 785 }
 786
 787 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 788                                              struct net_device *dev,
 789                                              int link_id, u8 key_idx)
 790 {
 791         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 792         struct ieee80211_link_data *link =
 793                 ieee80211_link_or_deflink(sdata, link_id, true);
 794
 795         if (IS_ERR(link))
 796                 return PTR_ERR(link);
 797
 798         ieee80211_set_default_mgmt_key(link, key_idx);
 799
 800         return 0;
 801 }
 802
 803 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
 804                                                struct net_device *dev,
 805                                                int link_id, u8 key_idx)
 806 {
 807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 808         struct ieee80211_link_data *link =
 809                 ieee80211_link_or_deflink(sdata, link_id, true);
 810
 811         if (IS_ERR(link))
 812                 return PTR_ERR(link);
 813
 814         ieee80211_set_default_beacon_key(link, key_idx);
 815
 816         return 0;
 817 }
 818
 819 void sta_set_rate_info_tx(struct sta_info *sta,
 820                           const struct ieee80211_tx_rate *rate,
 821                           struct rate_info *rinfo)
 822 {
 823         rinfo->flags = 0;
 824         if (rate->flags & IEEE80211_TX_RC_MCS) {
 825                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 826                 rinfo->mcs = rate->idx;
 827         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 828                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 829                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 830                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 831         } else {
 832                 struct ieee80211_supported_band *sband;
 833                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 834                 u16 brate;
 835
 836                 sband = ieee80211_get_sband(sta->sdata);
 837                 WARN_ON_ONCE(sband && !sband->bitrates);
 838                 if (sband && sband->bitrates) {
 839                         brate = sband->bitrates[rate->idx].bitrate;
 840                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 841                 }
 842         }
 843         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 844                 rinfo->bw = RATE_INFO_BW_40;
 845         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 846                 rinfo->bw = RATE_INFO_BW_80;
 847         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 848                 rinfo->bw = RATE_INFO_BW_160;
 849         else
 850                 rinfo->bw = RATE_INFO_BW_20;
 851         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 852                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 853 }
 854
 855 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 856                                   int idx, u8 *mac, struct station_info *sinfo)
 857 {
 858         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 859         struct ieee80211_local *local = sdata->local;
 860         struct sta_info *sta;
 861         int ret = -ENOENT;
 862
 863         mutex_lock(&local->sta_mtx);
 864
 865         sta = sta_info_get_by_idx(sdata, idx);
 866         if (sta) {
 867                 ret = 0;
 868                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 869                 sta_set_sinfo(sta, sinfo, true);
 870         }
 871
 872         mutex_unlock(&local->sta_mtx);
 873
 874         return ret;
 875 }
 876
 877 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 878                                  int idx, struct survey_info *survey)
 879 {
 880         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 881
 882         return drv_get_survey(local, idx, survey);
 883 }
 884
 885 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 886                                  const u8 *mac, struct station_info *sinfo)
 887 {
 888         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 889         struct ieee80211_local *local = sdata->local;
 890         struct sta_info *sta;
 891         int ret = -ENOENT;
 892
 893         mutex_lock(&local->sta_mtx);
 894
 895         sta = sta_info_get_bss(sdata, mac);
 896         if (sta) {
 897                 ret = 0;
 898                 sta_set_sinfo(sta, sinfo, true);
 899         }
 900
 901         mutex_unlock(&local->sta_mtx);
 902
 903         return ret;
 904 }
 905
 906 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 907                                          struct cfg80211_chan_def *chandef)
 908 {
 909         struct ieee80211_local *local = wiphy_priv(wiphy);
 910         struct ieee80211_sub_if_data *sdata;
 911         int ret = 0;
 912
 913         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 914                 return 0;
 915
 916         mutex_lock(&local->mtx);
 917         if (local->use_chanctx) {
 918                 sdata = wiphy_dereference(local->hw.wiphy,
 919                                           local->monitor_sdata);
 920                 if (sdata) {
 921                         ieee80211_link_release_channel(&sdata->deflink);
 922                         ret = ieee80211_link_use_channel(&sdata->deflink,
 923                                                          chandef,
 924                                                          IEEE80211_CHANCTX_EXCLUSIVE);
 925                 }
 926         } else if (local->open_count == local->monitors) {
 927                 local->_oper_chandef = *chandef;
 928                 ieee80211_hw_config(local, 0);
 929         }
 930
 931         if (ret == 0)
 932                 local->monitor_chandef = *chandef;
 933         mutex_unlock(&local->mtx);
 934
 935         return ret;
 936 }
 937
 938 static int
 939 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 940                          const u8 *resp, size_t resp_len,
 941                          const struct ieee80211_csa_settings *csa,
 942                          const struct ieee80211_color_change_settings *cca,
 943                          struct ieee80211_link_data *link)
 944 {
 945         struct probe_resp *new, *old;
 946
 947         if (!resp || !resp_len)
 948                 return 1;
 949
 950         old = sdata_dereference(link->u.ap.probe_resp, sdata);
 951
 952         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 953         if (!new)
 954                 return -ENOMEM;
 955
 956         new->len = resp_len;
 957         memcpy(new->data, resp, resp_len);
 958
 959         if (csa)
 960                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
 961                        csa->n_counter_offsets_presp *
 962                        sizeof(new->cntdwn_counter_offsets[0]));
 963         else if (cca)
 964                 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
 965
 966         rcu_assign_pointer(link->u.ap.probe_resp, new);
 967         if (old)
 968                 kfree_rcu(old, rcu_head);
 969
 970         return 0;
 971 }
 972
 973 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
 974                                         struct cfg80211_fils_discovery *params,
 975                                         struct ieee80211_link_data *link,
 976                                         struct ieee80211_bss_conf *link_conf)
 977 {
 978         struct fils_discovery_data *new, *old = NULL;
 979         struct ieee80211_fils_discovery *fd;
 980
 981         if (!params->tmpl || !params->tmpl_len)
 982                 return -EINVAL;
 983
 984         fd = &link_conf->fils_discovery;
 985         fd->min_interval = params->min_interval;
 986         fd->max_interval = params->max_interval;
 987
 988         old = sdata_dereference(link->u.ap.fils_discovery, sdata);
 989         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
 990         if (!new)
 991                 return -ENOMEM;
 992         new->len = params->tmpl_len;
 993         memcpy(new->data, params->tmpl, params->tmpl_len);
 994         rcu_assign_pointer(link->u.ap.fils_discovery, new);
 995
 996         if (old)
 997                 kfree_rcu(old, rcu_head);
 998
 999         return 0;
1000 }
1001
1002 static int
1003 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
1004                                      struct cfg80211_unsol_bcast_probe_resp *params,
1005                                      struct ieee80211_link_data *link,
1006                                      struct ieee80211_bss_conf *link_conf)
1007 {
1008         struct unsol_bcast_probe_resp_data *new, *old = NULL;
1009
1010         if (!params->tmpl || !params->tmpl_len)
1011                 return -EINVAL;
1012
1013         old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1014         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1015         if (!new)
1016                 return -ENOMEM;
1017         new->len = params->tmpl_len;
1018         memcpy(new->data, params->tmpl, params->tmpl_len);
1019         rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1020
1021         if (old)
1022                 kfree_rcu(old, rcu_head);
1023
1024         link_conf->unsol_bcast_probe_resp_interval = params->interval;
1025
1026         return 0;
1027 }
1028
1029 static int ieee80211_set_ftm_responder_params(
1030                                 struct ieee80211_sub_if_data *sdata,
1031                                 const u8 *lci, size_t lci_len,
1032                                 const u8 *civicloc, size_t civicloc_len,
1033                                 struct ieee80211_bss_conf *link_conf)
1034 {
1035         struct ieee80211_ftm_responder_params *new, *old;
1036         u8 *pos;
1037         int len;
1038
1039         if (!lci_len && !civicloc_len)
1040                 return 0;
1041
1042         old = link_conf->ftmr_params;
1043         len = lci_len + civicloc_len;
1044
1045         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1046         if (!new)
1047                 return -ENOMEM;
1048
1049         pos = (u8 *)(new + 1);
1050         if (lci_len) {
1051                 new->lci_len = lci_len;
1052                 new->lci = pos;
1053                 memcpy(pos, lci, lci_len);
1054                 pos += lci_len;
1055         }
1056
1057         if (civicloc_len) {
1058                 new->civicloc_len = civicloc_len;
1059                 new->civicloc = pos;
1060                 memcpy(pos, civicloc, civicloc_len);
1061                 pos += civicloc_len;
1062         }
1063
1064         link_conf->ftmr_params = new;
1065         kfree(old);
1066
1067         return 0;
1068 }
1069
1070 static int
1071 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1072                              struct cfg80211_mbssid_elems *src)
1073 {
1074         int i, offset = 0;
1075
1076         for (i = 0; i < src->cnt; i++) {
1077                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1078                 dst->elem[i].len = src->elem[i].len;
1079                 dst->elem[i].data = pos + offset;
1080                 offset += dst->elem[i].len;
1081         }
1082         dst->cnt = src->cnt;
1083
1084         return offset;
1085 }
1086
1087 static int
1088 ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst,
1089                           struct cfg80211_rnr_elems *src)
1090 {
1091         int i, offset = 0;
1092
1093         for (i = 0; i < src->cnt; i++) {
1094                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1095                 dst->elem[i].len = src->elem[i].len;
1096                 dst->elem[i].data = pos + offset;
1097                 offset += dst->elem[i].len;
1098         }
1099         dst->cnt = src->cnt;
1100
1101         return offset;
1102 }
1103
1104 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1105                                    struct ieee80211_link_data *link,
1106                                    struct cfg80211_beacon_data *params,
1107                                    const struct ieee80211_csa_settings *csa,
1108                                    const struct ieee80211_color_change_settings *cca)
1109 {
1110         struct cfg80211_mbssid_elems *mbssid = NULL;
1111         struct cfg80211_rnr_elems *rnr = NULL;
1112         struct beacon_data *new, *old;
1113         int new_head_len, new_tail_len;
1114         int size, err;
1115         u32 changed = BSS_CHANGED_BEACON;
1116         struct ieee80211_bss_conf *link_conf = link->conf;
1117
1118         old = sdata_dereference(link->u.ap.beacon, sdata);
1119
1120         /* Need to have a beacon head if we don't have one yet */
1121         if (!params->head && !old)
1122                 return -EINVAL;
1123
1124         /* new or old head? */
1125         if (params->head)
1126                 new_head_len = params->head_len;
1127         else
1128                 new_head_len = old->head_len;
1129
1130         /* new or old tail? */
1131         if (params->tail || !old)
1132                 /* params->tail_len will be zero for !params->tail */
1133                 new_tail_len = params->tail_len;
1134         else
1135                 new_tail_len = old->tail_len;
1136
1137         size = sizeof(*new) + new_head_len + new_tail_len;
1138
1139         /* new or old multiple BSSID elements? */
1140         if (params->mbssid_ies) {
1141                 mbssid = params->mbssid_ies;
1142                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1143                 if (params->rnr_ies) {
1144                         rnr = params->rnr_ies;
1145                         size += struct_size(new->rnr_ies, elem, rnr->cnt);
1146                 }
1147                 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1148                                                         mbssid->cnt);
1149         } else if (old && old->mbssid_ies) {
1150                 mbssid = old->mbssid_ies;
1151                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1152                 if (old && old->rnr_ies) {
1153                         rnr = old->rnr_ies;
1154                         size += struct_size(new->rnr_ies, elem, rnr->cnt);
1155                 }
1156                 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1157                                                         mbssid->cnt);
1158         }
1159
1160         new = kzalloc(size, GFP_KERNEL);
1161         if (!new)
1162                 return -ENOMEM;
1163
1164         /* start filling the new info now */
1165
1166         /*
1167          * pointers go into the block we allocated,
1168          * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies
1169          */
1170         new->head = ((u8 *) new) + sizeof(*new);
1171         new->tail = new->head + new_head_len;
1172         new->head_len = new_head_len;
1173         new->tail_len = new_tail_len;
1174         /* copy in optional mbssid_ies */
1175         if (mbssid) {
1176                 u8 *pos = new->tail + new->tail_len;
1177
1178                 new->mbssid_ies = (void *)pos;
1179                 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1180                 pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies,
1181                                                     mbssid);
1182                 if (rnr) {
1183                         new->rnr_ies = (void *)pos;
1184                         pos += struct_size(new->rnr_ies, elem, rnr->cnt);
1185                         ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr);
1186                 }
1187                 /* update bssid_indicator */
1188                 link_conf->bssid_indicator =
1189                         ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1190         }
1191
1192         if (csa) {
1193                 new->cntdwn_current_counter = csa->count;
1194                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1195                        csa->n_counter_offsets_beacon *
1196                        sizeof(new->cntdwn_counter_offsets[0]));
1197         } else if (cca) {
1198                 new->cntdwn_current_counter = cca->count;
1199                 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1200         }
1201
1202         /* copy in head */
1203         if (params->head)
1204                 memcpy(new->head, params->head, new_head_len);
1205         else
1206                 memcpy(new->head, old->head, new_head_len);
1207
1208         /* copy in optional tail */
1209         if (params->tail)
1210                 memcpy(new->tail, params->tail, new_tail_len);
1211         else
1212                 if (old)
1213                         memcpy(new->tail, old->tail, new_tail_len);
1214
1215         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1216                                        params->probe_resp_len, csa, cca, link);
1217         if (err < 0) {
1218                 kfree(new);
1219                 return err;
1220         }
1221         if (err == 0)
1222                 changed |= BSS_CHANGED_AP_PROBE_RESP;
1223
1224         if (params->ftm_responder != -1) {
1225                 link_conf->ftm_responder = params->ftm_responder;
1226                 err = ieee80211_set_ftm_responder_params(sdata,
1227                                                          params->lci,
1228                                                          params->lci_len,
1229                                                          params->civicloc,
1230                                                          params->civicloc_len,
1231                                                          link_conf);
1232
1233                 if (err < 0) {
1234                         kfree(new);
1235                         return err;
1236                 }
1237
1238                 changed |= BSS_CHANGED_FTM_RESPONDER;
1239         }
1240
1241         rcu_assign_pointer(link->u.ap.beacon, new);
1242         sdata->u.ap.active = true;
1243
1244         if (old)
1245                 kfree_rcu(old, rcu_head);
1246
1247         return changed;
1248 }
1249
1250 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1251                               struct cfg80211_ap_settings *params)
1252 {
1253         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1254         struct ieee80211_local *local = sdata->local;
1255         struct beacon_data *old;
1256         struct ieee80211_sub_if_data *vlan;
1257         u64 changed = BSS_CHANGED_BEACON_INT |
1258                       BSS_CHANGED_BEACON_ENABLED |
1259                       BSS_CHANGED_BEACON |
1260                       BSS_CHANGED_P2P_PS |
1261                       BSS_CHANGED_TXPOWER |
1262                       BSS_CHANGED_TWT;
1263         int i, err;
1264         int prev_beacon_int;
1265         unsigned int link_id = params->beacon.link_id;
1266         struct ieee80211_link_data *link;
1267         struct ieee80211_bss_conf *link_conf;
1268
1269         link = sdata_dereference(sdata->link[link_id], sdata);
1270         if (!link)
1271                 return -ENOLINK;
1272
1273         link_conf = link->conf;
1274
1275         old = sdata_dereference(link->u.ap.beacon, sdata);
1276         if (old)
1277                 return -EALREADY;
1278
1279         if (params->smps_mode != NL80211_SMPS_OFF)
1280                 return -ENOTSUPP;
1281
1282         link->smps_mode = IEEE80211_SMPS_OFF;
1283
1284         link->needed_rx_chains = sdata->local->rx_chains;
1285
1286         prev_beacon_int = link_conf->beacon_int;
1287         link_conf->beacon_int = params->beacon_interval;
1288
1289         if (params->ht_cap)
1290                 link_conf->ht_ldpc =
1291                         params->ht_cap->cap_info &
1292                                 cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING);
1293
1294         if (params->vht_cap) {
1295                 link_conf->vht_ldpc =
1296                         params->vht_cap->vht_cap_info &
1297                                 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC);
1298                 link_conf->vht_su_beamformer =
1299                         params->vht_cap->vht_cap_info &
1300                                 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
1301                 link_conf->vht_su_beamformee =
1302                         params->vht_cap->vht_cap_info &
1303                                 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
1304                 link_conf->vht_mu_beamformer =
1305                         params->vht_cap->vht_cap_info &
1306                                 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
1307                 link_conf->vht_mu_beamformee =
1308                         params->vht_cap->vht_cap_info &
1309                                 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
1310         }
1311
1312         if (params->he_cap && params->he_oper) {
1313                 link_conf->he_support = true;
1314                 link_conf->htc_trig_based_pkt_ext =
1315                         le32_get_bits(params->he_oper->he_oper_params,
1316                               IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1317                 link_conf->frame_time_rts_th =
1318                         le32_get_bits(params->he_oper->he_oper_params,
1319                               IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1320                 changed |= BSS_CHANGED_HE_OBSS_PD;
1321
1322                 if (params->beacon.he_bss_color.enabled)
1323                         changed |= BSS_CHANGED_HE_BSS_COLOR;
1324         }
1325
1326         if (params->he_cap) {
1327                 link_conf->he_ldpc =
1328                         params->he_cap->phy_cap_info[1] &
1329                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD;
1330                 link_conf->he_su_beamformer =
1331                         params->he_cap->phy_cap_info[3] &
1332                                 IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER;
1333                 link_conf->he_su_beamformee =
1334                         params->he_cap->phy_cap_info[4] &
1335                                 IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE;
1336                 link_conf->he_mu_beamformer =
1337                         params->he_cap->phy_cap_info[4] &
1338                                 IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
1339                 link_conf->he_full_ul_mumimo =
1340                         params->he_cap->phy_cap_info[2] &
1341                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO;
1342         }
1343
1344         if (params->eht_cap) {
1345                 if (!link_conf->he_support)
1346                         return -EOPNOTSUPP;
1347
1348                 link_conf->eht_support = true;
1349                 link_conf->eht_puncturing = params->punct_bitmap;
1350                 changed |= BSS_CHANGED_EHT_PUNCTURING;
1351
1352                 link_conf->eht_su_beamformer =
1353                         params->eht_cap->fixed.phy_cap_info[0] &
1354                                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER;
1355                 link_conf->eht_su_beamformee =
1356                         params->eht_cap->fixed.phy_cap_info[0] &
1357                                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
1358                 link_conf->eht_mu_beamformer =
1359                         params->eht_cap->fixed.phy_cap_info[7] &
1360                                 (IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
1361                                  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
1362                                  IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ);
1363         } else {
1364                 link_conf->eht_su_beamformer = false;
1365                 link_conf->eht_su_beamformee = false;
1366                 link_conf->eht_mu_beamformer = false;
1367         }
1368
1369         if (sdata->vif.type == NL80211_IFTYPE_AP &&
1370             params->mbssid_config.tx_wdev) {
1371                 err = ieee80211_set_ap_mbssid_options(sdata,
1372                                                       params->mbssid_config,
1373                                                       link_conf);
1374                 if (err)
1375                         return err;
1376         }
1377
1378         mutex_lock(&local->mtx);
1379         err = ieee80211_link_use_channel(link, &params->chandef,
1380                                          IEEE80211_CHANCTX_SHARED);
1381         if (!err)
1382                 ieee80211_link_copy_chanctx_to_vlans(link, false);
1383         mutex_unlock(&local->mtx);
1384         if (err) {
1385                 link_conf->beacon_int = prev_beacon_int;
1386                 return err;
1387         }
1388
1389         /*
1390          * Apply control port protocol, this allows us to
1391          * not encrypt dynamic WEP control frames.
1392          */
1393         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1394         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1395         sdata->control_port_over_nl80211 =
1396                                 params->crypto.control_port_over_nl80211;
1397         sdata->control_port_no_preauth =
1398                                 params->crypto.control_port_no_preauth;
1399
1400         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1401                 vlan->control_port_protocol =
1402                         params->crypto.control_port_ethertype;
1403                 vlan->control_port_no_encrypt =
1404                         params->crypto.control_port_no_encrypt;
1405                 vlan->control_port_over_nl80211 =
1406                         params->crypto.control_port_over_nl80211;
1407                 vlan->control_port_no_preauth =
1408                         params->crypto.control_port_no_preauth;
1409         }
1410
1411         link_conf->dtim_period = params->dtim_period;
1412         link_conf->enable_beacon = true;
1413         link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1414         link_conf->twt_responder = params->twt_responder;
1415         link_conf->he_obss_pd = params->he_obss_pd;
1416         link_conf->he_bss_color = params->beacon.he_bss_color;
1417         sdata->vif.cfg.s1g = params->chandef.chan->band ==
1418                                   NL80211_BAND_S1GHZ;
1419
1420         sdata->vif.cfg.ssid_len = params->ssid_len;
1421         if (params->ssid_len)
1422                 memcpy(sdata->vif.cfg.ssid, params->ssid,
1423                        params->ssid_len);
1424         link_conf->hidden_ssid =
1425                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1426
1427         memset(&link_conf->p2p_noa_attr, 0,
1428                sizeof(link_conf->p2p_noa_attr));
1429         link_conf->p2p_noa_attr.oppps_ctwindow =
1430                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1431         if (params->p2p_opp_ps)
1432                 link_conf->p2p_noa_attr.oppps_ctwindow |=
1433                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1434
1435         sdata->beacon_rate_set = false;
1436         if (wiphy_ext_feature_isset(local->hw.wiphy,
1437                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1438                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1439                         sdata->beacon_rateidx_mask[i] =
1440                                 params->beacon_rate.control[i].legacy;
1441                         if (sdata->beacon_rateidx_mask[i])
1442                                 sdata->beacon_rate_set = true;
1443                 }
1444         }
1445
1446         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1447                 link_conf->beacon_tx_rate = params->beacon_rate;
1448
1449         err = ieee80211_assign_beacon(sdata, link, &params->beacon, NULL, NULL);
1450         if (err < 0)
1451                 goto error;
1452         changed |= err;
1453
1454         if (params->fils_discovery.max_interval) {
1455                 err = ieee80211_set_fils_discovery(sdata,
1456                                                    &params->fils_discovery,
1457                                                    link, link_conf);
1458                 if (err < 0)
1459                         goto error;
1460                 changed |= BSS_CHANGED_FILS_DISCOVERY;
1461         }
1462
1463         if (params->unsol_bcast_probe_resp.interval) {
1464                 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1465                                                            &params->unsol_bcast_probe_resp,
1466                                                            link, link_conf);
1467                 if (err < 0)
1468                         goto error;
1469                 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1470         }
1471
1472         err = drv_start_ap(sdata->local, sdata, link_conf);
1473         if (err) {
1474                 old = sdata_dereference(link->u.ap.beacon, sdata);
1475
1476                 if (old)
1477                         kfree_rcu(old, rcu_head);
1478                 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1479                 sdata->u.ap.active = false;
1480                 goto error;
1481         }
1482
1483         ieee80211_recalc_dtim(local, sdata);
1484         ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1485         ieee80211_link_info_change_notify(sdata, link, changed);
1486
1487         netif_carrier_on(dev);
1488         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1489                 netif_carrier_on(vlan->dev);
1490
1491         return 0;
1492
1493 error:
1494         mutex_lock(&local->mtx);
1495         ieee80211_link_release_channel(link);
1496         mutex_unlock(&local->mtx);
1497
1498         return err;
1499 }
1500
1501 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1502                                    struct cfg80211_beacon_data *params)
1503 {
1504         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1505         struct ieee80211_link_data *link;
1506         struct beacon_data *old;
1507         int err;
1508         struct ieee80211_bss_conf *link_conf;
1509
1510         sdata_assert_lock(sdata);
1511
1512         link = sdata_dereference(sdata->link[params->link_id], sdata);
1513         if (!link)
1514                 return -ENOLINK;
1515
1516         link_conf = link->conf;
1517
1518         /* don't allow changing the beacon while a countdown is in place - offset
1519          * of channel switch counter may change
1520          */
1521         if (link_conf->csa_active || link_conf->color_change_active)
1522                 return -EBUSY;
1523
1524         old = sdata_dereference(link->u.ap.beacon, sdata);
1525         if (!old)
1526                 return -ENOENT;
1527
1528         err = ieee80211_assign_beacon(sdata, link, params, NULL, NULL);
1529         if (err < 0)
1530                 return err;
1531
1532         if (params->he_bss_color_valid &&
1533             params->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1534                 link_conf->he_bss_color.enabled = params->he_bss_color.enabled;
1535                 err |= BSS_CHANGED_HE_BSS_COLOR;
1536         }
1537
1538         ieee80211_link_info_change_notify(sdata, link, err);
1539         return 0;
1540 }
1541
1542 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1543 {
1544         if (!link->u.ap.next_beacon)
1545                 return;
1546
1547         kfree(link->u.ap.next_beacon->mbssid_ies);
1548         kfree(link->u.ap.next_beacon->rnr_ies);
1549         kfree(link->u.ap.next_beacon);
1550         link->u.ap.next_beacon = NULL;
1551 }
1552
1553 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1554                              unsigned int link_id)
1555 {
1556         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1557         struct ieee80211_sub_if_data *vlan;
1558         struct ieee80211_local *local = sdata->local;
1559         struct beacon_data *old_beacon;
1560         struct probe_resp *old_probe_resp;
1561         struct fils_discovery_data *old_fils_discovery;
1562         struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1563         struct cfg80211_chan_def chandef;
1564         struct ieee80211_link_data *link =
1565                 sdata_dereference(sdata->link[link_id], sdata);
1566         struct ieee80211_bss_conf *link_conf = link->conf;
1567
1568         sdata_assert_lock(sdata);
1569
1570         old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1571         if (!old_beacon)
1572                 return -ENOENT;
1573         old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1574                                            sdata);
1575         old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1576                                                sdata);
1577         old_unsol_bcast_probe_resp =
1578                 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1579                                   sdata);
1580
1581         /* abort any running channel switch */
1582         mutex_lock(&local->mtx);
1583         link_conf->csa_active = false;
1584         if (link->csa_block_tx) {
1585                 ieee80211_wake_vif_queues(local, sdata,
1586                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1587                 link->csa_block_tx = false;
1588         }
1589
1590         mutex_unlock(&local->mtx);
1591
1592         ieee80211_free_next_beacon(link);
1593
1594         /* turn off carrier for this interface and dependent VLANs */
1595         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1596                 netif_carrier_off(vlan->dev);
1597         netif_carrier_off(dev);
1598
1599         /* remove beacon and probe response */
1600         sdata->u.ap.active = false;
1601         RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1602         RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1603         RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1604         RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1605         kfree_rcu(old_beacon, rcu_head);
1606         if (old_probe_resp)
1607                 kfree_rcu(old_probe_resp, rcu_head);
1608         if (old_fils_discovery)
1609                 kfree_rcu(old_fils_discovery, rcu_head);
1610         if (old_unsol_bcast_probe_resp)
1611                 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1612
1613         kfree(link_conf->ftmr_params);
1614         link_conf->ftmr_params = NULL;
1615
1616         sdata->vif.mbssid_tx_vif = NULL;
1617         link_conf->bssid_index = 0;
1618         link_conf->nontransmitted = false;
1619         link_conf->ema_ap = false;
1620         link_conf->bssid_indicator = 0;
1621
1622         __sta_info_flush(sdata, true);
1623         ieee80211_free_keys(sdata, true);
1624
1625         link_conf->enable_beacon = false;
1626         sdata->beacon_rate_set = false;
1627         sdata->vif.cfg.ssid_len = 0;
1628         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1629         ieee80211_link_info_change_notify(sdata, link,
1630                                           BSS_CHANGED_BEACON_ENABLED);
1631
1632         if (sdata->wdev.cac_started) {
1633                 chandef = link_conf->chandef;
1634                 cancel_delayed_work_sync(&link->dfs_cac_timer_work);
1635                 cfg80211_cac_event(sdata->dev, &chandef,
1636                                    NL80211_RADAR_CAC_ABORTED,
1637                                    GFP_KERNEL);
1638         }
1639
1640         drv_stop_ap(sdata->local, sdata, link_conf);
1641
1642         /* free all potentially still buffered bcast frames */
1643         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1644         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1645
1646         mutex_lock(&local->mtx);
1647         ieee80211_link_copy_chanctx_to_vlans(link, true);
1648         ieee80211_link_release_channel(link);
1649         mutex_unlock(&local->mtx);
1650
1651         return 0;
1652 }
1653
1654 static int sta_apply_auth_flags(struct ieee80211_local *local,
1655                                 struct sta_info *sta,
1656                                 u32 mask, u32 set)
1657 {
1658         int ret;
1659
1660         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1661             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1662             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1663                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1664                 if (ret)
1665                         return ret;
1666         }
1667
1668         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1669             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1670             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1671                 /*
1672                  * When peer becomes associated, init rate control as
1673                  * well. Some drivers require rate control initialized
1674                  * before drv_sta_state() is called.
1675                  */
1676                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1677                         rate_control_rate_init(sta);
1678
1679                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1680                 if (ret)
1681                         return ret;
1682         }
1683
1684         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1685                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1686                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1687                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1688                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1689                 else
1690                         ret = 0;
1691                 if (ret)
1692                         return ret;
1693         }
1694
1695         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1696             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1697             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1698                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1699                 if (ret)
1700                         return ret;
1701         }
1702
1703         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1704             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1705             test_sta_flag(sta, WLAN_STA_AUTH)) {
1706                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1707                 if (ret)
1708                         return ret;
1709         }
1710
1711         return 0;
1712 }
1713
1714 static void sta_apply_mesh_params(struct ieee80211_local *local,
1715                                   struct sta_info *sta,
1716                                   struct station_parameters *params)
1717 {
1718 #ifdef CONFIG_MAC80211_MESH
1719         struct ieee80211_sub_if_data *sdata = sta->sdata;
1720         u32 changed = 0;
1721
1722         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1723                 switch (params->plink_state) {
1724                 case NL80211_PLINK_ESTAB:
1725                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1726                                 changed = mesh_plink_inc_estab_count(sdata);
1727                         sta->mesh->plink_state = params->plink_state;
1728                         sta->mesh->aid = params->peer_aid;
1729
1730                         ieee80211_mps_sta_status_update(sta);
1731                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1732                                       sdata->u.mesh.mshcfg.power_mode);
1733
1734                         ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1735                         /* init at low value */
1736                         ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1737
1738                         break;
1739                 case NL80211_PLINK_LISTEN:
1740                 case NL80211_PLINK_BLOCKED:
1741                 case NL80211_PLINK_OPN_SNT:
1742                 case NL80211_PLINK_OPN_RCVD:
1743                 case NL80211_PLINK_CNF_RCVD:
1744                 case NL80211_PLINK_HOLDING:
1745                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1746                                 changed = mesh_plink_dec_estab_count(sdata);
1747                         sta->mesh->plink_state = params->plink_state;
1748
1749                         ieee80211_mps_sta_status_update(sta);
1750                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1751                                         NL80211_MESH_POWER_UNKNOWN);
1752                         break;
1753                 default:
1754                         /*  nothing  */
1755                         break;
1756                 }
1757         }
1758
1759         switch (params->plink_action) {
1760         case NL80211_PLINK_ACTION_NO_ACTION:
1761                 /* nothing */
1762                 break;
1763         case NL80211_PLINK_ACTION_OPEN:
1764                 changed |= mesh_plink_open(sta);
1765                 break;
1766         case NL80211_PLINK_ACTION_BLOCK:
1767                 changed |= mesh_plink_block(sta);
1768                 break;
1769         }
1770
1771         if (params->local_pm)
1772                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1773                                                           params->local_pm);
1774
1775         ieee80211_mbss_info_change_notify(sdata, changed);
1776 #endif
1777 }
1778
1779 static int sta_link_apply_parameters(struct ieee80211_local *local,
1780                                      struct sta_info *sta, bool new_link,
1781                                      struct link_station_parameters *params)
1782 {
1783         int ret = 0;
1784         struct ieee80211_supported_band *sband;
1785         struct ieee80211_sub_if_data *sdata = sta->sdata;
1786         u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1787         struct ieee80211_link_data *link =
1788                 sdata_dereference(sdata->link[link_id], sdata);
1789         struct link_sta_info *link_sta =
1790                 rcu_dereference_protected(sta->link[link_id],
1791                                           lockdep_is_held(&local->sta_mtx));
1792
1793         /*
1794          * If there are no changes, then accept a link that doesn't exist,
1795          * unless it's a new link.
1796          */
1797         if (params->link_id < 0 && !new_link &&
1798             !params->link_mac && !params->txpwr_set &&
1799             !params->supported_rates_len &&
1800             !params->ht_capa && !params->vht_capa &&
1801             !params->he_capa && !params->eht_capa &&
1802             !params->opmode_notif_used)
1803                 return 0;
1804
1805         if (!link || !link_sta)
1806                 return -EINVAL;
1807
1808         sband = ieee80211_get_link_sband(link);
1809         if (!sband)
1810                 return -EINVAL;
1811
1812         if (params->link_mac) {
1813                 if (new_link) {
1814                         memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1815                         memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1816                 } else if (!ether_addr_equal(link_sta->addr,
1817                                              params->link_mac)) {
1818                         return -EINVAL;
1819                 }
1820         } else if (new_link) {
1821                 return -EINVAL;
1822         }
1823
1824         if (params->txpwr_set) {
1825                 link_sta->pub->txpwr.type = params->txpwr.type;
1826                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1827                         link_sta->pub->txpwr.power = params->txpwr.power;
1828                 ret = drv_sta_set_txpwr(local, sdata, sta);
1829                 if (ret)
1830                         return ret;
1831         }
1832
1833         if (params->supported_rates &&
1834             params->supported_rates_len) {
1835                 ieee80211_parse_bitrates(link->conf->chandef.width,
1836                                          sband, params->supported_rates,
1837                                          params->supported_rates_len,
1838                                          &link_sta->pub->supp_rates[sband->band]);
1839         }
1840
1841         if (params->ht_capa)
1842                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1843                                                   params->ht_capa, link_sta);
1844
1845         /* VHT can override some HT caps such as the A-MSDU max length */
1846         if (params->vht_capa)
1847                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1848                                                     params->vht_capa, link_sta);
1849
1850         if (params->he_capa)
1851                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1852                                                   (void *)params->he_capa,
1853                                                   params->he_capa_len,
1854                                                   (void *)params->he_6ghz_capa,
1855                                                   link_sta);
1856
1857         if (params->he_capa && params->eht_capa)
1858                 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1859                                                     (u8 *)params->he_capa,
1860                                                     params->he_capa_len,
1861                                                     params->eht_capa,
1862                                                     params->eht_capa_len,
1863                                                     link_sta);
1864
1865         if (params->opmode_notif_used) {
1866                 /* returned value is only needed for rc update, but the
1867                  * rc isn't initialized here yet, so ignore it
1868                  */
1869                 __ieee80211_vht_handle_opmode(sdata, link_sta,
1870                                               params->opmode_notif,
1871                                               sband->band);
1872         }
1873
1874         return ret;
1875 }
1876
1877 static int sta_apply_parameters(struct ieee80211_local *local,
1878                                 struct sta_info *sta,
1879                                 struct station_parameters *params)
1880 {
1881         struct ieee80211_sub_if_data *sdata = sta->sdata;
1882         u32 mask, set;
1883         int ret = 0;
1884
1885         mask = params->sta_flags_mask;
1886         set = params->sta_flags_set;
1887
1888         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1889                 /*
1890                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1891                  * API but must follow AUTHENTICATED for driver state.
1892                  */
1893                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1894                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1895                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1896                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1897         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1898                 /*
1899                  * TDLS -- everything follows authorized, but
1900                  * only becoming authorized is possible, not
1901                  * going back
1902                  */
1903                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1904                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1905                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1906                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1907                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1908                 }
1909         }
1910
1911         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1912             local->hw.queues >= IEEE80211_NUM_ACS)
1913                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1914
1915         /* auth flags will be set later for TDLS,
1916          * and for unassociated stations that move to associated */
1917         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1918             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1919               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1920                 ret = sta_apply_auth_flags(local, sta, mask, set);
1921                 if (ret)
1922                         return ret;
1923         }
1924
1925         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1926                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1927                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1928                 else
1929                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1930         }
1931
1932         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1933                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1934                 if (set & BIT(NL80211_STA_FLAG_MFP))
1935                         set_sta_flag(sta, WLAN_STA_MFP);
1936                 else
1937                         clear_sta_flag(sta, WLAN_STA_MFP);
1938         }
1939
1940         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1941                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1942                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1943                 else
1944                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1945         }
1946
1947         /* mark TDLS channel switch support, if the AP allows it */
1948         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1949             !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1950             params->ext_capab_len >= 4 &&
1951             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1952                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1953
1954         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1955             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1956             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1957             params->ext_capab_len >= 8 &&
1958             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1959                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1960
1961         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1962                 sta->sta.uapsd_queues = params->uapsd_queues;
1963                 sta->sta.max_sp = params->max_sp;
1964         }
1965
1966         ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
1967                                               params->ext_capab_len);
1968
1969         /*
1970          * cfg80211 validates this (1-2007) and allows setting the AID
1971          * only when creating a new station entry
1972          */
1973         if (params->aid)
1974                 sta->sta.aid = params->aid;
1975
1976         /*
1977          * Some of the following updates would be racy if called on an
1978          * existing station, via ieee80211_change_station(). However,
1979          * all such changes are rejected by cfg80211 except for updates
1980          * changing the supported rates on an existing but not yet used
1981          * TDLS peer.
1982          */
1983
1984         if (params->listen_interval >= 0)
1985                 sta->listen_interval = params->listen_interval;
1986
1987         ret = sta_link_apply_parameters(local, sta, false,
1988                                         &params->link_sta_params);
1989         if (ret)
1990                 return ret;
1991
1992         if (params->support_p2p_ps >= 0)
1993                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1994
1995         if (ieee80211_vif_is_mesh(&sdata->vif))
1996                 sta_apply_mesh_params(local, sta, params);
1997
1998         if (params->airtime_weight)
1999                 sta->airtime_weight = params->airtime_weight;
2000
2001         /* set the STA state after all sta info from usermode has been set */
2002         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
2003             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
2004                 ret = sta_apply_auth_flags(local, sta, mask, set);
2005                 if (ret)
2006                         return ret;
2007         }
2008
2009         /* Mark the STA as MLO if MLD MAC address is available */
2010         if (params->link_sta_params.mld_mac)
2011                 sta->sta.mlo = true;
2012
2013         return 0;
2014 }
2015
2016 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
2017                                  const u8 *mac,
2018                                  struct station_parameters *params)
2019 {
2020         struct ieee80211_local *local = wiphy_priv(wiphy);
2021         struct sta_info *sta;
2022         struct ieee80211_sub_if_data *sdata;
2023         int err;
2024
2025         if (params->vlan) {
2026                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2027
2028                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2029                     sdata->vif.type != NL80211_IFTYPE_AP)
2030                         return -EINVAL;
2031         } else
2032                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2033
2034         if (ether_addr_equal(mac, sdata->vif.addr))
2035                 return -EINVAL;
2036
2037         if (!is_valid_ether_addr(mac))
2038                 return -EINVAL;
2039
2040         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2041             sdata->vif.type == NL80211_IFTYPE_STATION &&
2042             !sdata->u.mgd.associated)
2043                 return -EINVAL;
2044
2045         /*
2046          * If we have a link ID, it can be a non-MLO station on an AP MLD,
2047          * but we need to have a link_mac in that case as well, so use the
2048          * STA's MAC address in that case.
2049          */
2050         if (params->link_sta_params.link_id >= 0)
2051                 sta = sta_info_alloc_with_link(sdata, mac,
2052                                                params->link_sta_params.link_id,
2053                                                params->link_sta_params.link_mac ?: mac,
2054                                                GFP_KERNEL);
2055         else
2056                 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
2057
2058         if (!sta)
2059                 return -ENOMEM;
2060
2061         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2062                 sta->sta.tdls = true;
2063
2064         /* Though the mutex is not needed here (since the station is not
2065          * visible yet), sta_apply_parameters (and inner functions) require
2066          * the mutex due to other paths.
2067          */
2068         mutex_lock(&local->sta_mtx);
2069         err = sta_apply_parameters(local, sta, params);
2070         mutex_unlock(&local->sta_mtx);
2071         if (err) {
2072                 sta_info_free(local, sta);
2073                 return err;
2074         }
2075
2076         /*
2077          * for TDLS and for unassociated station, rate control should be
2078          * initialized only when rates are known and station is marked
2079          * authorized/associated
2080          */
2081         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2082             test_sta_flag(sta, WLAN_STA_ASSOC))
2083                 rate_control_rate_init(sta);
2084
2085         return sta_info_insert(sta);
2086 }
2087
2088 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
2089                                  struct station_del_parameters *params)
2090 {
2091         struct ieee80211_sub_if_data *sdata;
2092
2093         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2094
2095         if (params->mac)
2096                 return sta_info_destroy_addr_bss(sdata, params->mac);
2097
2098         sta_info_flush(sdata);
2099         return 0;
2100 }
2101
2102 static int ieee80211_change_station(struct wiphy *wiphy,
2103                                     struct net_device *dev, const u8 *mac,
2104                                     struct station_parameters *params)
2105 {
2106         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2107         struct ieee80211_local *local = wiphy_priv(wiphy);
2108         struct sta_info *sta;
2109         struct ieee80211_sub_if_data *vlansdata;
2110         enum cfg80211_station_type statype;
2111         int err;
2112
2113         mutex_lock(&local->sta_mtx);
2114
2115         sta = sta_info_get_bss(sdata, mac);
2116         if (!sta) {
2117                 err = -ENOENT;
2118                 goto out_err;
2119         }
2120
2121         switch (sdata->vif.type) {
2122         case NL80211_IFTYPE_MESH_POINT:
2123                 if (sdata->u.mesh.user_mpm)
2124                         statype = CFG80211_STA_MESH_PEER_USER;
2125                 else
2126                         statype = CFG80211_STA_MESH_PEER_KERNEL;
2127                 break;
2128         case NL80211_IFTYPE_ADHOC:
2129                 statype = CFG80211_STA_IBSS;
2130                 break;
2131         case NL80211_IFTYPE_STATION:
2132                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2133                         statype = CFG80211_STA_AP_STA;
2134                         break;
2135                 }
2136                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2137                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2138                 else
2139                         statype = CFG80211_STA_TDLS_PEER_SETUP;
2140                 break;
2141         case NL80211_IFTYPE_AP:
2142         case NL80211_IFTYPE_AP_VLAN:
2143                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2144                         statype = CFG80211_STA_AP_CLIENT;
2145                 else
2146                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2147                 break;
2148         default:
2149                 err = -EOPNOTSUPP;
2150                 goto out_err;
2151         }
2152
2153         err = cfg80211_check_station_change(wiphy, params, statype);
2154         if (err)
2155                 goto out_err;
2156
2157         if (params->vlan && params->vlan != sta->sdata->dev) {
2158                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2159
2160                 if (params->vlan->ieee80211_ptr->use_4addr) {
2161                         if (vlansdata->u.vlan.sta) {
2162                                 err = -EBUSY;
2163                                 goto out_err;
2164                         }
2165
2166                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2167                         __ieee80211_check_fast_rx_iface(vlansdata);
2168                         drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2169                 }
2170
2171                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2172                     sta->sdata->u.vlan.sta) {
2173                         ieee80211_clear_fast_rx(sta);
2174                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2175                 }
2176
2177                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2178                         ieee80211_vif_dec_num_mcast(sta->sdata);
2179
2180                 sta->sdata = vlansdata;
2181                 ieee80211_check_fast_xmit(sta);
2182
2183                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2184                         ieee80211_vif_inc_num_mcast(sta->sdata);
2185                         cfg80211_send_layer2_update(sta->sdata->dev,
2186                                                     sta->sta.addr);
2187                 }
2188         }
2189
2190         /* we use sta_info_get_bss() so this might be different */
2191         if (sdata != sta->sdata) {
2192                 mutex_lock_nested(&sta->sdata->wdev.mtx, 1);
2193                 err = sta_apply_parameters(local, sta, params);
2194                 mutex_unlock(&sta->sdata->wdev.mtx);
2195         } else {
2196                 err = sta_apply_parameters(local, sta, params);
2197         }
2198         if (err)
2199                 goto out_err;
2200
2201         mutex_unlock(&local->sta_mtx);
2202
2203         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2204             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2205                 ieee80211_recalc_ps(local);
2206                 ieee80211_recalc_ps_vif(sdata);
2207         }
2208
2209         return 0;
2210 out_err:
2211         mutex_unlock(&local->sta_mtx);
2212         return err;
2213 }
2214
2215 #ifdef CONFIG_MAC80211_MESH
2216 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2217                                const u8 *dst, const u8 *next_hop)
2218 {
2219         struct ieee80211_sub_if_data *sdata;
2220         struct mesh_path *mpath;
2221         struct sta_info *sta;
2222
2223         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2224
2225         rcu_read_lock();
2226         sta = sta_info_get(sdata, next_hop);
2227         if (!sta) {
2228                 rcu_read_unlock();
2229                 return -ENOENT;
2230         }
2231
2232         mpath = mesh_path_add(sdata, dst);
2233         if (IS_ERR(mpath)) {
2234                 rcu_read_unlock();
2235                 return PTR_ERR(mpath);
2236         }
2237
2238         mesh_path_fix_nexthop(mpath, sta);
2239
2240         rcu_read_unlock();
2241         return 0;
2242 }
2243
2244 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2245                                const u8 *dst)
2246 {
2247         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2248
2249         if (dst)
2250                 return mesh_path_del(sdata, dst);
2251
2252         mesh_path_flush_by_iface(sdata);
2253         return 0;
2254 }
2255
2256 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2257                                   const u8 *dst, const u8 *next_hop)
2258 {
2259         struct ieee80211_sub_if_data *sdata;
2260         struct mesh_path *mpath;
2261         struct sta_info *sta;
2262
2263         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2264
2265         rcu_read_lock();
2266
2267         sta = sta_info_get(sdata, next_hop);
2268         if (!sta) {
2269                 rcu_read_unlock();
2270                 return -ENOENT;
2271         }
2272
2273         mpath = mesh_path_lookup(sdata, dst);
2274         if (!mpath) {
2275                 rcu_read_unlock();
2276                 return -ENOENT;
2277         }
2278
2279         mesh_path_fix_nexthop(mpath, sta);
2280
2281         rcu_read_unlock();
2282         return 0;
2283 }
2284
2285 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2286                             struct mpath_info *pinfo)
2287 {
2288         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2289
2290         if (next_hop_sta)
2291                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2292         else
2293                 eth_zero_addr(next_hop);
2294
2295         memset(pinfo, 0, sizeof(*pinfo));
2296
2297         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2298
2299         pinfo->filled = MPATH_INFO_FRAME_QLEN |
2300                         MPATH_INFO_SN |
2301                         MPATH_INFO_METRIC |
2302                         MPATH_INFO_EXPTIME |
2303                         MPATH_INFO_DISCOVERY_TIMEOUT |
2304                         MPATH_INFO_DISCOVERY_RETRIES |
2305                         MPATH_INFO_FLAGS |
2306                         MPATH_INFO_HOP_COUNT |
2307                         MPATH_INFO_PATH_CHANGE;
2308
2309         pinfo->frame_qlen = mpath->frame_queue.qlen;
2310         pinfo->sn = mpath->sn;
2311         pinfo->metric = mpath->metric;
2312         if (time_before(jiffies, mpath->exp_time))
2313                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2314         pinfo->discovery_timeout =
2315                         jiffies_to_msecs(mpath->discovery_timeout);
2316         pinfo->discovery_retries = mpath->discovery_retries;
2317         if (mpath->flags & MESH_PATH_ACTIVE)
2318                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2319         if (mpath->flags & MESH_PATH_RESOLVING)
2320                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2321         if (mpath->flags & MESH_PATH_SN_VALID)
2322                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2323         if (mpath->flags & MESH_PATH_FIXED)
2324                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2325         if (mpath->flags & MESH_PATH_RESOLVED)
2326                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2327         pinfo->hop_count = mpath->hop_count;
2328         pinfo->path_change_count = mpath->path_change_count;
2329 }
2330
2331 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2332                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2333
2334 {
2335         struct ieee80211_sub_if_data *sdata;
2336         struct mesh_path *mpath;
2337
2338         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2339
2340         rcu_read_lock();
2341         mpath = mesh_path_lookup(sdata, dst);
2342         if (!mpath) {
2343                 rcu_read_unlock();
2344                 return -ENOENT;
2345         }
2346         memcpy(dst, mpath->dst, ETH_ALEN);
2347         mpath_set_pinfo(mpath, next_hop, pinfo);
2348         rcu_read_unlock();
2349         return 0;
2350 }
2351
2352 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2353                                 int idx, u8 *dst, u8 *next_hop,
2354                                 struct mpath_info *pinfo)
2355 {
2356         struct ieee80211_sub_if_data *sdata;
2357         struct mesh_path *mpath;
2358
2359         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2360
2361         rcu_read_lock();
2362         mpath = mesh_path_lookup_by_idx(sdata, idx);
2363         if (!mpath) {
2364                 rcu_read_unlock();
2365                 return -ENOENT;
2366         }
2367         memcpy(dst, mpath->dst, ETH_ALEN);
2368         mpath_set_pinfo(mpath, next_hop, pinfo);
2369         rcu_read_unlock();
2370         return 0;
2371 }
2372
2373 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2374                           struct mpath_info *pinfo)
2375 {
2376         memset(pinfo, 0, sizeof(*pinfo));
2377         memcpy(mpp, mpath->mpp, ETH_ALEN);
2378
2379         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2380 }
2381
2382 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2383                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2384
2385 {
2386         struct ieee80211_sub_if_data *sdata;
2387         struct mesh_path *mpath;
2388
2389         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2390
2391         rcu_read_lock();
2392         mpath = mpp_path_lookup(sdata, dst);
2393         if (!mpath) {
2394                 rcu_read_unlock();
2395                 return -ENOENT;
2396         }
2397         memcpy(dst, mpath->dst, ETH_ALEN);
2398         mpp_set_pinfo(mpath, mpp, pinfo);
2399         rcu_read_unlock();
2400         return 0;
2401 }
2402
2403 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2404                               int idx, u8 *dst, u8 *mpp,
2405                               struct mpath_info *pinfo)
2406 {
2407         struct ieee80211_sub_if_data *sdata;
2408         struct mesh_path *mpath;
2409
2410         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2411
2412         rcu_read_lock();
2413         mpath = mpp_path_lookup_by_idx(sdata, idx);
2414         if (!mpath) {
2415                 rcu_read_unlock();
2416                 return -ENOENT;
2417         }
2418         memcpy(dst, mpath->dst, ETH_ALEN);
2419         mpp_set_pinfo(mpath, mpp, pinfo);
2420         rcu_read_unlock();
2421         return 0;
2422 }
2423
2424 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2425                                 struct net_device *dev,
2426                                 struct mesh_config *conf)
2427 {
2428         struct ieee80211_sub_if_data *sdata;
2429         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2430
2431         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2432         return 0;
2433 }
2434
2435 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2436 {
2437         return (mask >> (parm-1)) & 0x1;
2438 }
2439
2440 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2441                 const struct mesh_setup *setup)
2442 {
2443         u8 *new_ie;
2444         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2445                                         struct ieee80211_sub_if_data, u.mesh);
2446         int i;
2447
2448         /* allocate information elements */
2449         new_ie = NULL;
2450
2451         if (setup->ie_len) {
2452                 new_ie = kmemdup(setup->ie, setup->ie_len,
2453                                 GFP_KERNEL);
2454                 if (!new_ie)
2455                         return -ENOMEM;
2456         }
2457         ifmsh->ie_len = setup->ie_len;
2458         ifmsh->ie = new_ie;
2459
2460         /* now copy the rest of the setup parameters */
2461         ifmsh->mesh_id_len = setup->mesh_id_len;
2462         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2463         ifmsh->mesh_sp_id = setup->sync_method;
2464         ifmsh->mesh_pp_id = setup->path_sel_proto;
2465         ifmsh->mesh_pm_id = setup->path_metric;
2466         ifmsh->user_mpm = setup->user_mpm;
2467         ifmsh->mesh_auth_id = setup->auth_id;
2468         ifmsh->security = IEEE80211_MESH_SEC_NONE;
2469         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2470         if (setup->is_authenticated)
2471                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2472         if (setup->is_secure)
2473                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2474
2475         /* mcast rate setting in Mesh Node */
2476         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2477                                                 sizeof(setup->mcast_rate));
2478         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2479
2480         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2481         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2482
2483         sdata->beacon_rate_set = false;
2484         if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2485                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2486                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2487                         sdata->beacon_rateidx_mask[i] =
2488                                 setup->beacon_rate.control[i].legacy;
2489                         if (sdata->beacon_rateidx_mask[i])
2490                                 sdata->beacon_rate_set = true;
2491                 }
2492         }
2493
2494         return 0;
2495 }
2496
2497 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2498                                         struct net_device *dev, u32 mask,
2499                                         const struct mesh_config *nconf)
2500 {
2501         struct mesh_config *conf;
2502         struct ieee80211_sub_if_data *sdata;
2503         struct ieee80211_if_mesh *ifmsh;
2504
2505         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2506         ifmsh = &sdata->u.mesh;
2507
2508         /* Set the config options which we are interested in setting */
2509         conf = &(sdata->u.mesh.mshcfg);
2510         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2511                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2512         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2513                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2514         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2515                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2516         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2517                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2518         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2519                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2520         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2521                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2522         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2523                 conf->element_ttl = nconf->element_ttl;
2524         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2525                 if (ifmsh->user_mpm)
2526                         return -EBUSY;
2527                 conf->auto_open_plinks = nconf->auto_open_plinks;
2528         }
2529         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2530                 conf->dot11MeshNbrOffsetMaxNeighbor =
2531                         nconf->dot11MeshNbrOffsetMaxNeighbor;
2532         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2533                 conf->dot11MeshHWMPmaxPREQretries =
2534                         nconf->dot11MeshHWMPmaxPREQretries;
2535         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2536                 conf->path_refresh_time = nconf->path_refresh_time;
2537         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2538                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2539         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2540                 conf->dot11MeshHWMPactivePathTimeout =
2541                         nconf->dot11MeshHWMPactivePathTimeout;
2542         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2543                 conf->dot11MeshHWMPpreqMinInterval =
2544                         nconf->dot11MeshHWMPpreqMinInterval;
2545         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2546                 conf->dot11MeshHWMPperrMinInterval =
2547                         nconf->dot11MeshHWMPperrMinInterval;
2548         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2549                            mask))
2550                 conf->dot11MeshHWMPnetDiameterTraversalTime =
2551                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
2552         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2553                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2554                 ieee80211_mesh_root_setup(ifmsh);
2555         }
2556         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2557                 /* our current gate announcement implementation rides on root
2558                  * announcements, so require this ifmsh to also be a root node
2559                  * */
2560                 if (nconf->dot11MeshGateAnnouncementProtocol &&
2561                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2562                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2563                         ieee80211_mesh_root_setup(ifmsh);
2564                 }
2565                 conf->dot11MeshGateAnnouncementProtocol =
2566                         nconf->dot11MeshGateAnnouncementProtocol;
2567         }
2568         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2569                 conf->dot11MeshHWMPRannInterval =
2570                         nconf->dot11MeshHWMPRannInterval;
2571         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2572                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2573         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2574                 /* our RSSI threshold implementation is supported only for
2575                  * devices that report signal in dBm.
2576                  */
2577                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2578                         return -ENOTSUPP;
2579                 conf->rssi_threshold = nconf->rssi_threshold;
2580         }
2581         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2582                 conf->ht_opmode = nconf->ht_opmode;
2583                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2584                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2585                                                   BSS_CHANGED_HT);
2586         }
2587         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2588                 conf->dot11MeshHWMPactivePathToRootTimeout =
2589                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2590         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2591                 conf->dot11MeshHWMProotInterval =
2592                         nconf->dot11MeshHWMProotInterval;
2593         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2594                 conf->dot11MeshHWMPconfirmationInterval =
2595                         nconf->dot11MeshHWMPconfirmationInterval;
2596         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2597                 conf->power_mode = nconf->power_mode;
2598                 ieee80211_mps_local_status_update(sdata);
2599         }
2600         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2601                 conf->dot11MeshAwakeWindowDuration =
2602                         nconf->dot11MeshAwakeWindowDuration;
2603         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2604                 conf->plink_timeout = nconf->plink_timeout;
2605         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2606                 conf->dot11MeshConnectedToMeshGate =
2607                         nconf->dot11MeshConnectedToMeshGate;
2608         if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2609                 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2610         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2611                 conf->dot11MeshConnectedToAuthServer =
2612                         nconf->dot11MeshConnectedToAuthServer;
2613         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2614         return 0;
2615 }
2616
2617 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2618                                const struct mesh_config *conf,
2619                                const struct mesh_setup *setup)
2620 {
2621         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2622         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2623         int err;
2624
2625         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2626         err = copy_mesh_setup(ifmsh, setup);
2627         if (err)
2628                 return err;
2629
2630         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2631
2632         /* can mesh use other SMPS modes? */
2633         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2634         sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2635
2636         mutex_lock(&sdata->local->mtx);
2637         err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef,
2638                                          IEEE80211_CHANCTX_SHARED);
2639         mutex_unlock(&sdata->local->mtx);
2640         if (err)
2641                 return err;
2642
2643         return ieee80211_start_mesh(sdata);
2644 }
2645
2646 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2647 {
2648         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2649
2650         ieee80211_stop_mesh(sdata);
2651         mutex_lock(&sdata->local->mtx);
2652         ieee80211_link_release_channel(&sdata->deflink);
2653         kfree(sdata->u.mesh.ie);
2654         mutex_unlock(&sdata->local->mtx);
2655
2656         return 0;
2657 }
2658 #endif
2659
2660 static int ieee80211_change_bss(struct wiphy *wiphy,
2661                                 struct net_device *dev,
2662                                 struct bss_parameters *params)
2663 {
2664         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2665         struct ieee80211_link_data *link;
2666         struct ieee80211_supported_band *sband;
2667         u32 changed = 0;
2668
2669         link = ieee80211_link_or_deflink(sdata, params->link_id, true);
2670         if (IS_ERR(link))
2671                 return PTR_ERR(link);
2672
2673         if (!sdata_dereference(link->u.ap.beacon, sdata))
2674                 return -ENOENT;
2675
2676         sband = ieee80211_get_link_sband(link);
2677         if (!sband)
2678                 return -EINVAL;
2679
2680         if (params->basic_rates) {
2681                 if (!ieee80211_parse_bitrates(link->conf->chandef.width,
2682                                               wiphy->bands[sband->band],
2683                                               params->basic_rates,
2684                                               params->basic_rates_len,
2685                                               &link->conf->basic_rates))
2686                         return -EINVAL;
2687                 changed |= BSS_CHANGED_BASIC_RATES;
2688                 ieee80211_check_rate_mask(link);
2689         }
2690
2691         if (params->use_cts_prot >= 0) {
2692                 link->conf->use_cts_prot = params->use_cts_prot;
2693                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2694         }
2695         if (params->use_short_preamble >= 0) {
2696                 link->conf->use_short_preamble = params->use_short_preamble;
2697                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2698         }
2699
2700         if (!link->conf->use_short_slot &&
2701             (sband->band == NL80211_BAND_5GHZ ||
2702              sband->band == NL80211_BAND_6GHZ)) {
2703                 link->conf->use_short_slot = true;
2704                 changed |= BSS_CHANGED_ERP_SLOT;
2705         }
2706
2707         if (params->use_short_slot_time >= 0) {
2708                 link->conf->use_short_slot = params->use_short_slot_time;
2709                 changed |= BSS_CHANGED_ERP_SLOT;
2710         }
2711
2712         if (params->ap_isolate >= 0) {
2713                 if (params->ap_isolate)
2714                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2715                 else
2716                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2717                 ieee80211_check_fast_rx_iface(sdata);
2718         }
2719
2720         if (params->ht_opmode >= 0) {
2721                 link->conf->ht_operation_mode = (u16)params->ht_opmode;
2722                 changed |= BSS_CHANGED_HT;
2723         }
2724
2725         if (params->p2p_ctwindow >= 0) {
2726                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2727                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2728                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2729                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2730                 changed |= BSS_CHANGED_P2P_PS;
2731         }
2732
2733         if (params->p2p_opp_ps > 0) {
2734                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2735                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2736                 changed |= BSS_CHANGED_P2P_PS;
2737         } else if (params->p2p_opp_ps == 0) {
2738                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2739                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2740                 changed |= BSS_CHANGED_P2P_PS;
2741         }
2742
2743         ieee80211_link_info_change_notify(sdata, link, changed);
2744
2745         return 0;
2746 }
2747
2748 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2749                                     struct net_device *dev,
2750                                     struct ieee80211_txq_params *params)
2751 {
2752         struct ieee80211_local *local = wiphy_priv(wiphy);
2753         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2754         struct ieee80211_link_data *link =
2755                 ieee80211_link_or_deflink(sdata, params->link_id, true);
2756         struct ieee80211_tx_queue_params p;
2757
2758         if (!local->ops->conf_tx)
2759                 return -EOPNOTSUPP;
2760
2761         if (local->hw.queues < IEEE80211_NUM_ACS)
2762                 return -EOPNOTSUPP;
2763
2764         if (IS_ERR(link))
2765                 return PTR_ERR(link);
2766
2767         memset(&p, 0, sizeof(p));
2768         p.aifs = params->aifs;
2769         p.cw_max = params->cwmax;
2770         p.cw_min = params->cwmin;
2771         p.txop = params->txop;
2772
2773         /*
2774          * Setting tx queue params disables u-apsd because it's only
2775          * called in master mode.
2776          */
2777         p.uapsd = false;
2778
2779         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2780
2781         link->tx_conf[params->ac] = p;
2782         if (drv_conf_tx(local, link, params->ac, &p)) {
2783                 wiphy_debug(local->hw.wiphy,
2784                             "failed to set TX queue parameters for AC %d\n",
2785                             params->ac);
2786                 return -EINVAL;
2787         }
2788
2789         ieee80211_link_info_change_notify(sdata, link,
2790                                           BSS_CHANGED_QOS);
2791
2792         return 0;
2793 }
2794
2795 #ifdef CONFIG_PM
2796 static int ieee80211_suspend(struct wiphy *wiphy,
2797                              struct cfg80211_wowlan *wowlan)
2798 {
2799         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2800 }
2801
2802 static int ieee80211_resume(struct wiphy *wiphy)
2803 {
2804         return __ieee80211_resume(wiphy_priv(wiphy));
2805 }
2806 #else
2807 #define ieee80211_suspend NULL
2808 #define ieee80211_resume NULL
2809 #endif
2810
2811 static int ieee80211_scan(struct wiphy *wiphy,
2812                           struct cfg80211_scan_request *req)
2813 {
2814         struct ieee80211_sub_if_data *sdata;
2815
2816         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2817
2818         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2819         case NL80211_IFTYPE_STATION:
2820         case NL80211_IFTYPE_ADHOC:
2821         case NL80211_IFTYPE_MESH_POINT:
2822         case NL80211_IFTYPE_P2P_CLIENT:
2823         case NL80211_IFTYPE_P2P_DEVICE:
2824                 break;
2825         case NL80211_IFTYPE_P2P_GO:
2826                 if (sdata->local->ops->hw_scan)
2827                         break;
2828                 /*
2829                  * FIXME: implement NoA while scanning in software,
2830                  * for now fall through to allow scanning only when
2831                  * beaconing hasn't been configured yet
2832                  */
2833                 fallthrough;
2834         case NL80211_IFTYPE_AP:
2835                 /*
2836                  * If the scan has been forced (and the driver supports
2837                  * forcing), don't care about being beaconing already.
2838                  * This will create problems to the attached stations (e.g. all
2839                  * the frames sent while scanning on other channel will be
2840                  * lost)
2841                  */
2842                 if (sdata->deflink.u.ap.beacon &&
2843                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2844                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2845                         return -EOPNOTSUPP;
2846                 break;
2847         case NL80211_IFTYPE_NAN:
2848         default:
2849                 return -EOPNOTSUPP;
2850         }
2851
2852         return ieee80211_request_scan(sdata, req);
2853 }
2854
2855 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2856 {
2857         ieee80211_scan_cancel(wiphy_priv(wiphy));
2858 }
2859
2860 static int
2861 ieee80211_sched_scan_start(struct wiphy *wiphy,
2862                            struct net_device *dev,
2863                            struct cfg80211_sched_scan_request *req)
2864 {
2865         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2866
2867         if (!sdata->local->ops->sched_scan_start)
2868                 return -EOPNOTSUPP;
2869
2870         return ieee80211_request_sched_scan_start(sdata, req);
2871 }
2872
2873 static int
2874 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2875                           u64 reqid)
2876 {
2877         struct ieee80211_local *local = wiphy_priv(wiphy);
2878
2879         if (!local->ops->sched_scan_stop)
2880                 return -EOPNOTSUPP;
2881
2882         return ieee80211_request_sched_scan_stop(local);
2883 }
2884
2885 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2886                           struct cfg80211_auth_request *req)
2887 {
2888         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2889 }
2890
2891 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2892                            struct cfg80211_assoc_request *req)
2893 {
2894         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2895 }
2896
2897 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2898                             struct cfg80211_deauth_request *req)
2899 {
2900         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2901 }
2902
2903 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2904                               struct cfg80211_disassoc_request *req)
2905 {
2906         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2907 }
2908
2909 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2910                                struct cfg80211_ibss_params *params)
2911 {
2912         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2913 }
2914
2915 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2916 {
2917         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2918 }
2919
2920 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2921                               struct ocb_setup *setup)
2922 {
2923         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2924 }
2925
2926 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2927 {
2928         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2929 }
2930
2931 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2932                                     int rate[NUM_NL80211_BANDS])
2933 {
2934         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2935
2936         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2937                sizeof(int) * NUM_NL80211_BANDS);
2938
2939         ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2940                                           BSS_CHANGED_MCAST_RATE);
2941
2942         return 0;
2943 }
2944
2945 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2946 {
2947         struct ieee80211_local *local = wiphy_priv(wiphy);
2948         int err;
2949
2950         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2951                 ieee80211_check_fast_xmit_all(local);
2952
2953                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2954
2955                 if (err) {
2956                         ieee80211_check_fast_xmit_all(local);
2957                         return err;
2958                 }
2959         }
2960
2961         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2962             (changed & WIPHY_PARAM_DYN_ACK)) {
2963                 s16 coverage_class;
2964
2965                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2966                                         wiphy->coverage_class : -1;
2967                 err = drv_set_coverage_class(local, coverage_class);
2968
2969                 if (err)
2970                         return err;
2971         }
2972
2973         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2974                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2975
2976                 if (err)
2977                         return err;
2978         }
2979
2980         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2981                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2982                         return -EINVAL;
2983                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2984         }
2985         if (changed & WIPHY_PARAM_RETRY_LONG) {
2986                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2987                         return -EINVAL;
2988                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2989         }
2990         if (changed &
2991             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2992                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2993
2994         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2995                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2996                        WIPHY_PARAM_TXQ_QUANTUM))
2997                 ieee80211_txq_set_params(local);
2998
2999         return 0;
3000 }
3001
3002 static int ieee80211_set_tx_power(struct wiphy *wiphy,
3003                                   struct wireless_dev *wdev,
3004                                   enum nl80211_tx_power_setting type, int mbm)
3005 {
3006         struct ieee80211_local *local = wiphy_priv(wiphy);
3007         struct ieee80211_sub_if_data *sdata;
3008         enum nl80211_tx_power_setting txp_type = type;
3009         bool update_txp_type = false;
3010         bool has_monitor = false;
3011
3012         if (wdev) {
3013                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3014
3015                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3016                         sdata = wiphy_dereference(local->hw.wiphy,
3017                                                   local->monitor_sdata);
3018                         if (!sdata)
3019                                 return -EOPNOTSUPP;
3020                 }
3021
3022                 switch (type) {
3023                 case NL80211_TX_POWER_AUTOMATIC:
3024                         sdata->deflink.user_power_level =
3025                                 IEEE80211_UNSET_POWER_LEVEL;
3026                         txp_type = NL80211_TX_POWER_LIMITED;
3027                         break;
3028                 case NL80211_TX_POWER_LIMITED:
3029                 case NL80211_TX_POWER_FIXED:
3030                         if (mbm < 0 || (mbm % 100))
3031                                 return -EOPNOTSUPP;
3032                         sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
3033                         break;
3034                 }
3035
3036                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
3037                         update_txp_type = true;
3038                         sdata->vif.bss_conf.txpower_type = txp_type;
3039                 }
3040
3041                 ieee80211_recalc_txpower(sdata, update_txp_type);
3042
3043                 return 0;
3044         }
3045
3046         switch (type) {
3047         case NL80211_TX_POWER_AUTOMATIC:
3048                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
3049                 txp_type = NL80211_TX_POWER_LIMITED;
3050                 break;
3051         case NL80211_TX_POWER_LIMITED:
3052         case NL80211_TX_POWER_FIXED:
3053                 if (mbm < 0 || (mbm % 100))
3054                         return -EOPNOTSUPP;
3055                 local->user_power_level = MBM_TO_DBM(mbm);
3056                 break;
3057         }
3058
3059         mutex_lock(&local->iflist_mtx);
3060         list_for_each_entry(sdata, &local->interfaces, list) {
3061                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3062                         has_monitor = true;
3063                         continue;
3064                 }
3065                 sdata->deflink.user_power_level = local->user_power_level;
3066                 if (txp_type != sdata->vif.bss_conf.txpower_type)
3067                         update_txp_type = true;
3068                 sdata->vif.bss_conf.txpower_type = txp_type;
3069         }
3070         list_for_each_entry(sdata, &local->interfaces, list) {
3071                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
3072                         continue;
3073                 ieee80211_recalc_txpower(sdata, update_txp_type);
3074         }
3075         mutex_unlock(&local->iflist_mtx);
3076
3077         if (has_monitor) {
3078                 sdata = wiphy_dereference(local->hw.wiphy,
3079                                           local->monitor_sdata);
3080                 if (sdata) {
3081                         sdata->deflink.user_power_level = local->user_power_level;
3082                         if (txp_type != sdata->vif.bss_conf.txpower_type)
3083                                 update_txp_type = true;
3084                         sdata->vif.bss_conf.txpower_type = txp_type;
3085
3086                         ieee80211_recalc_txpower(sdata, update_txp_type);
3087                 }
3088         }
3089
3090         return 0;
3091 }
3092
3093 static int ieee80211_get_tx_power(struct wiphy *wiphy,
3094                                   struct wireless_dev *wdev,
3095                                   int *dbm)
3096 {
3097         struct ieee80211_local *local = wiphy_priv(wiphy);
3098         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3099
3100         if (local->ops->get_txpower)
3101                 return drv_get_txpower(local, sdata, dbm);
3102
3103         if (!local->use_chanctx)
3104                 *dbm = local->hw.conf.power_level;
3105         else
3106                 *dbm = sdata->vif.bss_conf.txpower;
3107
3108         return 0;
3109 }
3110
3111 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3112 {
3113         struct ieee80211_local *local = wiphy_priv(wiphy);
3114
3115         drv_rfkill_poll(local);
3116 }
3117
3118 #ifdef CONFIG_NL80211_TESTMODE
3119 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3120                                   struct wireless_dev *wdev,
3121                                   void *data, int len)
3122 {
3123         struct ieee80211_local *local = wiphy_priv(wiphy);
3124         struct ieee80211_vif *vif = NULL;
3125
3126         if (!local->ops->testmode_cmd)
3127                 return -EOPNOTSUPP;
3128
3129         if (wdev) {
3130                 struct ieee80211_sub_if_data *sdata;
3131
3132                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3133                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3134                         vif = &sdata->vif;
3135         }
3136
3137         return local->ops->testmode_cmd(&local->hw, vif, data, len);
3138 }
3139
3140 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3141                                    struct sk_buff *skb,
3142                                    struct netlink_callback *cb,
3143                                    void *data, int len)
3144 {
3145         struct ieee80211_local *local = wiphy_priv(wiphy);
3146
3147         if (!local->ops->testmode_dump)
3148                 return -EOPNOTSUPP;
3149
3150         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3151 }
3152 #endif
3153
3154 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3155                                  struct ieee80211_link_data *link,
3156                                  enum ieee80211_smps_mode smps_mode)
3157 {
3158         const u8 *ap;
3159         enum ieee80211_smps_mode old_req;
3160         int err;
3161         struct sta_info *sta;
3162         bool tdls_peer_found = false;
3163
3164         lockdep_assert_held(&sdata->wdev.mtx);
3165
3166         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3167                 return -EINVAL;
3168
3169         old_req = link->u.mgd.req_smps;
3170         link->u.mgd.req_smps = smps_mode;
3171
3172         if (old_req == smps_mode &&
3173             smps_mode != IEEE80211_SMPS_AUTOMATIC)
3174                 return 0;
3175
3176         /*
3177          * If not associated, or current association is not an HT
3178          * association, there's no need to do anything, just store
3179          * the new value until we associate.
3180          */
3181         if (!sdata->u.mgd.associated ||
3182             link->conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
3183                 return 0;
3184
3185         ap = link->u.mgd.bssid;
3186
3187         rcu_read_lock();
3188         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3189                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3190                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3191                         continue;
3192
3193                 tdls_peer_found = true;
3194                 break;
3195         }
3196         rcu_read_unlock();
3197
3198         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3199                 if (tdls_peer_found || !sdata->u.mgd.powersave)
3200                         smps_mode = IEEE80211_SMPS_OFF;
3201                 else
3202                         smps_mode = IEEE80211_SMPS_DYNAMIC;
3203         }
3204
3205         /* send SM PS frame to AP */
3206         err = ieee80211_send_smps_action(sdata, smps_mode,
3207                                          ap, ap);
3208         if (err)
3209                 link->u.mgd.req_smps = old_req;
3210         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3211                 ieee80211_teardown_tdls_peers(sdata);
3212
3213         return err;
3214 }
3215
3216 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3217                                     bool enabled, int timeout)
3218 {
3219         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3220         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3221         unsigned int link_id;
3222
3223         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3224                 return -EOPNOTSUPP;
3225
3226         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3227                 return -EOPNOTSUPP;
3228
3229         if (enabled == sdata->u.mgd.powersave &&
3230             timeout == local->dynamic_ps_forced_timeout)
3231                 return 0;
3232
3233         sdata->u.mgd.powersave = enabled;
3234         local->dynamic_ps_forced_timeout = timeout;
3235
3236         /* no change, but if automatic follow powersave */
3237         sdata_lock(sdata);
3238         for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3239                 struct ieee80211_link_data *link;
3240
3241                 link = sdata_dereference(sdata->link[link_id], sdata);
3242
3243                 if (!link)
3244                         continue;
3245                 __ieee80211_request_smps_mgd(sdata, link,
3246                                              link->u.mgd.req_smps);
3247         }
3248         sdata_unlock(sdata);
3249
3250         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3251                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3252
3253         ieee80211_recalc_ps(local);
3254         ieee80211_recalc_ps_vif(sdata);
3255         ieee80211_check_fast_rx_iface(sdata);
3256
3257         return 0;
3258 }
3259
3260 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3261                                          struct net_device *dev,
3262                                          s32 rssi_thold, u32 rssi_hyst)
3263 {
3264         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3265         struct ieee80211_vif *vif = &sdata->vif;
3266         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3267
3268         if (rssi_thold == bss_conf->cqm_rssi_thold &&
3269             rssi_hyst == bss_conf->cqm_rssi_hyst)
3270                 return 0;
3271
3272         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3273             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3274                 return -EOPNOTSUPP;
3275
3276         bss_conf->cqm_rssi_thold = rssi_thold;
3277         bss_conf->cqm_rssi_hyst = rssi_hyst;
3278         bss_conf->cqm_rssi_low = 0;
3279         bss_conf->cqm_rssi_high = 0;
3280         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3281
3282         /* tell the driver upon association, unless already associated */
3283         if (sdata->u.mgd.associated &&
3284             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3285                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3286                                                   BSS_CHANGED_CQM);
3287
3288         return 0;
3289 }
3290
3291 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3292                                                struct net_device *dev,
3293                                                s32 rssi_low, s32 rssi_high)
3294 {
3295         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3296         struct ieee80211_vif *vif = &sdata->vif;
3297         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3298
3299         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
3300                 return -EOPNOTSUPP;
3301
3302         bss_conf->cqm_rssi_low = rssi_low;
3303         bss_conf->cqm_rssi_high = rssi_high;
3304         bss_conf->cqm_rssi_thold = 0;
3305         bss_conf->cqm_rssi_hyst = 0;
3306         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3307
3308         /* tell the driver upon association, unless already associated */
3309         if (sdata->u.mgd.associated &&
3310             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3311                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3312                                                   BSS_CHANGED_CQM);
3313
3314         return 0;
3315 }
3316
3317 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3318                                       struct net_device *dev,
3319                                       unsigned int link_id,
3320                                       const u8 *addr,
3321                                       const struct cfg80211_bitrate_mask *mask)
3322 {
3323         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3324         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3325         int i, ret;
3326
3327         if (!ieee80211_sdata_running(sdata))
3328                 return -ENETDOWN;
3329
3330         /*
3331          * If active validate the setting and reject it if it doesn't leave
3332          * at least one basic rate usable, since we really have to be able
3333          * to send something, and if we're an AP we have to be able to do
3334          * so at a basic rate so that all clients can receive it.
3335          */
3336         if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3337             sdata->vif.bss_conf.chandef.chan) {
3338                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3339                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
3340
3341                 if (!(mask->control[band].legacy & basic_rates))
3342                         return -EINVAL;
3343         }
3344
3345         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3346                 ret = drv_set_bitrate_mask(local, sdata, mask);
3347                 if (ret)
3348                         return ret;
3349         }
3350
3351         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3352                 struct ieee80211_supported_band *sband = wiphy->bands[i];
3353                 int j;
3354
3355                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3356                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3357                        sizeof(mask->control[i].ht_mcs));
3358                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3359                        mask->control[i].vht_mcs,
3360                        sizeof(mask->control[i].vht_mcs));
3361
3362                 sdata->rc_has_mcs_mask[i] = false;
3363                 sdata->rc_has_vht_mcs_mask[i] = false;
3364                 if (!sband)
3365                         continue;
3366
3367                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3368                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3369                                 sdata->rc_has_mcs_mask[i] = true;
3370                                 break;
3371                         }
3372                 }
3373
3374                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3375                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3376                                 sdata->rc_has_vht_mcs_mask[i] = true;
3377                                 break;
3378                         }
3379                 }
3380         }
3381
3382         return 0;
3383 }
3384
3385 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3386                                            struct net_device *dev,
3387                                            struct cfg80211_chan_def *chandef,
3388                                            u32 cac_time_ms)
3389 {
3390         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3391         struct ieee80211_local *local = sdata->local;
3392         int err;
3393
3394         mutex_lock(&local->mtx);
3395         if (!list_empty(&local->roc_list) || local->scanning) {
3396                 err = -EBUSY;
3397                 goto out_unlock;
3398         }
3399
3400         /* whatever, but channel contexts should not complain about that one */
3401         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3402         sdata->deflink.needed_rx_chains = local->rx_chains;
3403
3404         err = ieee80211_link_use_channel(&sdata->deflink, chandef,
3405                                          IEEE80211_CHANCTX_SHARED);
3406         if (err)
3407                 goto out_unlock;
3408
3409         ieee80211_queue_delayed_work(&sdata->local->hw,
3410                                      &sdata->deflink.dfs_cac_timer_work,
3411                                      msecs_to_jiffies(cac_time_ms));
3412
3413  out_unlock:
3414         mutex_unlock(&local->mtx);
3415         return err;
3416 }
3417
3418 static void ieee80211_end_cac(struct wiphy *wiphy,
3419                               struct net_device *dev)
3420 {
3421         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3422         struct ieee80211_local *local = sdata->local;
3423
3424         mutex_lock(&local->mtx);
3425         list_for_each_entry(sdata, &local->interfaces, list) {
3426                 /* it might be waiting for the local->mtx, but then
3427                  * by the time it gets it, sdata->wdev.cac_started
3428                  * will no longer be true
3429                  */
3430                 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
3431
3432                 if (sdata->wdev.cac_started) {
3433                         ieee80211_link_release_channel(&sdata->deflink);
3434                         sdata->wdev.cac_started = false;
3435                 }
3436         }
3437         mutex_unlock(&local->mtx);
3438 }
3439
3440 static struct cfg80211_beacon_data *
3441 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3442 {
3443         struct cfg80211_beacon_data *new_beacon;
3444         u8 *pos;
3445         int len;
3446
3447         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3448               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3449               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
3450
3451         if (beacon->mbssid_ies)
3452                 len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
3453                                                        beacon->rnr_ies,
3454                                                        beacon->mbssid_ies->cnt);
3455
3456         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3457         if (!new_beacon)
3458                 return NULL;
3459
3460         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3461                 new_beacon->mbssid_ies =
3462                         kzalloc(struct_size(new_beacon->mbssid_ies,
3463                                             elem, beacon->mbssid_ies->cnt),
3464                                 GFP_KERNEL);
3465                 if (!new_beacon->mbssid_ies) {
3466                         kfree(new_beacon);
3467                         return NULL;
3468                 }
3469
3470                 if (beacon->rnr_ies && beacon->rnr_ies->cnt) {
3471                         new_beacon->rnr_ies =
3472                                 kzalloc(struct_size(new_beacon->rnr_ies,
3473                                                     elem, beacon->rnr_ies->cnt),
3474                                         GFP_KERNEL);
3475                         if (!new_beacon->rnr_ies) {
3476                                 kfree(new_beacon->mbssid_ies);
3477                                 kfree(new_beacon);
3478                                 return NULL;
3479                         }
3480                 }
3481         }
3482
3483         pos = (u8 *)(new_beacon + 1);
3484         if (beacon->head_len) {
3485                 new_beacon->head_len = beacon->head_len;
3486                 new_beacon->head = pos;
3487                 memcpy(pos, beacon->head, beacon->head_len);
3488                 pos += beacon->head_len;
3489         }
3490         if (beacon->tail_len) {
3491                 new_beacon->tail_len = beacon->tail_len;
3492                 new_beacon->tail = pos;
3493                 memcpy(pos, beacon->tail, beacon->tail_len);
3494                 pos += beacon->tail_len;
3495         }
3496         if (beacon->beacon_ies_len) {
3497                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3498                 new_beacon->beacon_ies = pos;
3499                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3500                 pos += beacon->beacon_ies_len;
3501         }
3502         if (beacon->proberesp_ies_len) {
3503                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3504                 new_beacon->proberesp_ies = pos;
3505                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3506                 pos += beacon->proberesp_ies_len;
3507         }
3508         if (beacon->assocresp_ies_len) {
3509                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3510                 new_beacon->assocresp_ies = pos;
3511                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3512                 pos += beacon->assocresp_ies_len;
3513         }
3514         if (beacon->probe_resp_len) {
3515                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3516                 new_beacon->probe_resp = pos;
3517                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3518                 pos += beacon->probe_resp_len;
3519         }
3520         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3521                 pos += ieee80211_copy_mbssid_beacon(pos,
3522                                                     new_beacon->mbssid_ies,
3523                                                     beacon->mbssid_ies);
3524                 if (beacon->rnr_ies && beacon->rnr_ies->cnt)
3525                         pos += ieee80211_copy_rnr_beacon(pos,
3526                                                          new_beacon->rnr_ies,
3527                                                          beacon->rnr_ies);
3528         }
3529
3530         /* might copy -1, meaning no changes requested */
3531         new_beacon->ftm_responder = beacon->ftm_responder;
3532         if (beacon->lci) {
3533                 new_beacon->lci_len = beacon->lci_len;
3534                 new_beacon->lci = pos;
3535                 memcpy(pos, beacon->lci, beacon->lci_len);
3536                 pos += beacon->lci_len;
3537         }
3538         if (beacon->civicloc) {
3539                 new_beacon->civicloc_len = beacon->civicloc_len;
3540                 new_beacon->civicloc = pos;
3541                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3542                 pos += beacon->civicloc_len;
3543         }
3544
3545         return new_beacon;
3546 }
3547
3548 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3549 {
3550         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3551         struct ieee80211_local *local = sdata->local;
3552
3553         rcu_read_lock();
3554
3555         if (vif->mbssid_tx_vif == vif) {
3556                 /* Trigger ieee80211_csa_finish() on the non-transmitting
3557                  * interfaces when channel switch is received on
3558                  * transmitting interface
3559                  */
3560                 struct ieee80211_sub_if_data *iter;
3561
3562                 list_for_each_entry_rcu(iter, &local->interfaces, list) {
3563                         if (!ieee80211_sdata_running(iter))
3564                                 continue;
3565
3566                         if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3567                                 continue;
3568
3569                         ieee80211_queue_work(&iter->local->hw,
3570                                              &iter->deflink.csa_finalize_work);
3571                 }
3572         }
3573         ieee80211_queue_work(&local->hw, &sdata->deflink.csa_finalize_work);
3574
3575         rcu_read_unlock();
3576 }
3577 EXPORT_SYMBOL(ieee80211_csa_finish);
3578
3579 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3580 {
3581         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3582         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3583         struct ieee80211_local *local = sdata->local;
3584
3585         sdata->deflink.csa_block_tx = block_tx;
3586         sdata_info(sdata, "channel switch failed, disconnecting\n");
3587         ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
3588 }
3589 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3590
3591 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3592                                           u32 *changed)
3593 {
3594         int err;
3595
3596         switch (sdata->vif.type) {
3597         case NL80211_IFTYPE_AP:
3598                 if (!sdata->deflink.u.ap.next_beacon)
3599                         return -EINVAL;
3600
3601                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3602                                               sdata->deflink.u.ap.next_beacon,
3603                                               NULL, NULL);
3604                 ieee80211_free_next_beacon(&sdata->deflink);
3605
3606                 if (err < 0)
3607                         return err;
3608                 *changed |= err;
3609                 break;
3610         case NL80211_IFTYPE_ADHOC:
3611                 err = ieee80211_ibss_finish_csa(sdata);
3612                 if (err < 0)
3613                         return err;
3614                 *changed |= err;
3615                 break;
3616 #ifdef CONFIG_MAC80211_MESH
3617         case NL80211_IFTYPE_MESH_POINT:
3618                 err = ieee80211_mesh_finish_csa(sdata);
3619                 if (err < 0)
3620                         return err;
3621                 *changed |= err;
3622                 break;
3623 #endif
3624         default:
3625                 WARN_ON(1);
3626                 return -EINVAL;
3627         }
3628
3629         return 0;
3630 }
3631
3632 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3633 {
3634         struct ieee80211_local *local = sdata->local;
3635         u32 changed = 0;
3636         int err;
3637
3638         sdata_assert_lock(sdata);
3639         lockdep_assert_held(&local->mtx);
3640         lockdep_assert_held(&local->chanctx_mtx);
3641
3642         if (sdata->vif.bss_conf.eht_puncturing != sdata->vif.bss_conf.csa_punct_bitmap) {
3643                 sdata->vif.bss_conf.eht_puncturing =
3644                                         sdata->vif.bss_conf.csa_punct_bitmap;
3645                 changed |= BSS_CHANGED_EHT_PUNCTURING;
3646         }
3647
3648         /*
3649          * using reservation isn't immediate as it may be deferred until later
3650          * with multi-vif. once reservation is complete it will re-schedule the
3651          * work with no reserved_chanctx so verify chandef to check if it
3652          * completed successfully
3653          */
3654
3655         if (sdata->deflink.reserved_chanctx) {
3656                 /*
3657                  * with multi-vif csa driver may call ieee80211_csa_finish()
3658                  * many times while waiting for other interfaces to use their
3659                  * reservations
3660                  */
3661                 if (sdata->deflink.reserved_ready)
3662                         return 0;
3663
3664                 return ieee80211_link_use_reserved_context(&sdata->deflink);
3665         }
3666
3667         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3668                                         &sdata->deflink.csa_chandef))
3669                 return -EINVAL;
3670
3671         sdata->vif.bss_conf.csa_active = false;
3672
3673         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3674         if (err)
3675                 return err;
3676
3677         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
3678
3679         if (sdata->deflink.csa_block_tx) {
3680                 ieee80211_wake_vif_queues(local, sdata,
3681                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3682                 sdata->deflink.csa_block_tx = false;
3683         }
3684
3685         err = drv_post_channel_switch(sdata);
3686         if (err)
3687                 return err;
3688
3689         cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0,
3690                                   sdata->vif.bss_conf.eht_puncturing);
3691
3692         return 0;
3693 }
3694
3695 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3696 {
3697         if (__ieee80211_csa_finalize(sdata)) {
3698                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3699                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3700                                     GFP_KERNEL);
3701         }
3702 }
3703
3704 void ieee80211_csa_finalize_work(struct work_struct *work)
3705 {
3706         struct ieee80211_sub_if_data *sdata =
3707                 container_of(work, struct ieee80211_sub_if_data,
3708                              deflink.csa_finalize_work);
3709         struct ieee80211_local *local = sdata->local;
3710
3711         sdata_lock(sdata);
3712         mutex_lock(&local->mtx);
3713         mutex_lock(&local->chanctx_mtx);
3714
3715         /* AP might have been stopped while waiting for the lock. */
3716         if (!sdata->vif.bss_conf.csa_active)
3717                 goto unlock;
3718
3719         if (!ieee80211_sdata_running(sdata))
3720                 goto unlock;
3721
3722         ieee80211_csa_finalize(sdata);
3723
3724 unlock:
3725         mutex_unlock(&local->chanctx_mtx);
3726         mutex_unlock(&local->mtx);
3727         sdata_unlock(sdata);
3728 }
3729
3730 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3731                                     struct cfg80211_csa_settings *params,
3732                                     u32 *changed)
3733 {
3734         struct ieee80211_csa_settings csa = {};
3735         int err;
3736
3737         switch (sdata->vif.type) {
3738         case NL80211_IFTYPE_AP:
3739                 sdata->deflink.u.ap.next_beacon =
3740                         cfg80211_beacon_dup(&params->beacon_after);
3741                 if (!sdata->deflink.u.ap.next_beacon)
3742                         return -ENOMEM;
3743
3744                 /*
3745                  * With a count of 0, we don't have to wait for any
3746                  * TBTT before switching, so complete the CSA
3747                  * immediately.  In theory, with a count == 1 we
3748                  * should delay the switch until just before the next
3749                  * TBTT, but that would complicate things so we switch
3750                  * immediately too.  If we would delay the switch
3751                  * until the next TBTT, we would have to set the probe
3752                  * response here.
3753                  *
3754                  * TODO: A channel switch with count <= 1 without
3755                  * sending a CSA action frame is kind of useless,
3756                  * because the clients won't know we're changing
3757                  * channels.  The action frame must be implemented
3758                  * either here or in the userspace.
3759                  */
3760                 if (params->count <= 1)
3761                         break;
3762
3763                 if ((params->n_counter_offsets_beacon >
3764                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3765                     (params->n_counter_offsets_presp >
3766                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3767                         ieee80211_free_next_beacon(&sdata->deflink);
3768                         return -EINVAL;
3769                 }
3770
3771                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3772                 csa.counter_offsets_presp = params->counter_offsets_presp;
3773                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3774                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3775                 csa.count = params->count;
3776
3777                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3778                                               &params->beacon_csa, &csa,
3779                                               NULL);
3780                 if (err < 0) {
3781                         ieee80211_free_next_beacon(&sdata->deflink);
3782                         return err;
3783                 }
3784                 *changed |= err;
3785
3786                 break;
3787         case NL80211_IFTYPE_ADHOC:
3788                 if (!sdata->vif.cfg.ibss_joined)
3789                         return -EINVAL;
3790
3791                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3792                         return -EINVAL;
3793
3794                 switch (params->chandef.width) {
3795                 case NL80211_CHAN_WIDTH_40:
3796                         if (cfg80211_get_chandef_type(&params->chandef) !=
3797                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3798                                 return -EINVAL;
3799                         break;
3800                 case NL80211_CHAN_WIDTH_5:
3801                 case NL80211_CHAN_WIDTH_10:
3802                 case NL80211_CHAN_WIDTH_20_NOHT:
3803                 case NL80211_CHAN_WIDTH_20:
3804                         break;
3805                 default:
3806                         return -EINVAL;
3807                 }
3808
3809                 /* changes into another band are not supported */
3810                 if (sdata->u.ibss.chandef.chan->band !=
3811                     params->chandef.chan->band)
3812                         return -EINVAL;
3813
3814                 /* see comments in the NL80211_IFTYPE_AP block */
3815                 if (params->count > 1) {
3816                         err = ieee80211_ibss_csa_beacon(sdata, params);
3817                         if (err < 0)
3818                                 return err;
3819                         *changed |= err;
3820                 }
3821
3822                 ieee80211_send_action_csa(sdata, params);
3823
3824                 break;
3825 #ifdef CONFIG_MAC80211_MESH
3826         case NL80211_IFTYPE_MESH_POINT: {
3827                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3828
3829                 /* changes into another band are not supported */
3830                 if (sdata->vif.bss_conf.chandef.chan->band !=
3831                     params->chandef.chan->band)
3832                         return -EINVAL;
3833
3834                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3835                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3836                         if (!ifmsh->pre_value)
3837                                 ifmsh->pre_value = 1;
3838                         else
3839                                 ifmsh->pre_value++;
3840                 }
3841
3842                 /* see comments in the NL80211_IFTYPE_AP block */
3843                 if (params->count > 1) {
3844                         err = ieee80211_mesh_csa_beacon(sdata, params);
3845                         if (err < 0) {
3846                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3847                                 return err;
3848                         }
3849                         *changed |= err;
3850                 }
3851
3852                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3853                         ieee80211_send_action_csa(sdata, params);
3854
3855                 break;
3856                 }
3857 #endif
3858         default:
3859                 return -EOPNOTSUPP;
3860         }
3861
3862         return 0;
3863 }
3864
3865 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data  *sdata)
3866 {
3867         sdata->vif.bss_conf.color_change_active = false;
3868
3869         ieee80211_free_next_beacon(&sdata->deflink);
3870
3871         cfg80211_color_change_aborted_notify(sdata->dev);
3872 }
3873
3874 static int
3875 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3876                            struct cfg80211_csa_settings *params)
3877 {
3878         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3879         struct ieee80211_local *local = sdata->local;
3880         struct ieee80211_channel_switch ch_switch;
3881         struct ieee80211_chanctx_conf *conf;
3882         struct ieee80211_chanctx *chanctx;
3883         u32 changed = 0;
3884         int err;
3885
3886         sdata_assert_lock(sdata);
3887         lockdep_assert_held(&local->mtx);
3888
3889         if (!list_empty(&local->roc_list) || local->scanning)
3890                 return -EBUSY;
3891
3892         if (sdata->wdev.cac_started)
3893                 return -EBUSY;
3894
3895         if (cfg80211_chandef_identical(&params->chandef,
3896                                        &sdata->vif.bss_conf.chandef))
3897                 return -EINVAL;
3898
3899         /* don't allow another channel switch if one is already active. */
3900         if (sdata->vif.bss_conf.csa_active)
3901                 return -EBUSY;
3902
3903         mutex_lock(&local->chanctx_mtx);
3904         conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
3905                                          lockdep_is_held(&local->chanctx_mtx));
3906         if (!conf) {
3907                 err = -EBUSY;
3908                 goto out;
3909         }
3910
3911         if (params->chandef.chan->freq_offset) {
3912                 /* this may work, but is untested */
3913                 err = -EOPNOTSUPP;
3914                 goto out;
3915         }
3916
3917         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3918
3919         ch_switch.timestamp = 0;
3920         ch_switch.device_timestamp = 0;
3921         ch_switch.block_tx = params->block_tx;
3922         ch_switch.chandef = params->chandef;
3923         ch_switch.count = params->count;
3924
3925         err = drv_pre_channel_switch(sdata, &ch_switch);
3926         if (err)
3927                 goto out;
3928
3929         err = ieee80211_link_reserve_chanctx(&sdata->deflink, &params->chandef,
3930                                              chanctx->mode,
3931                                              params->radar_required);
3932         if (err)
3933                 goto out;
3934
3935         /* if reservation is invalid then this will fail */
3936         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3937         if (err) {
3938                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3939                 goto out;
3940         }
3941
3942         /* if there is a color change in progress, abort it */
3943         if (sdata->vif.bss_conf.color_change_active)
3944                 ieee80211_color_change_abort(sdata);
3945
3946         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3947         if (err) {
3948                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3949                 goto out;
3950         }
3951
3952         if (params->punct_bitmap && !sdata->vif.bss_conf.eht_support)
3953                 goto out;
3954
3955         sdata->deflink.csa_chandef = params->chandef;
3956         sdata->deflink.csa_block_tx = params->block_tx;
3957         sdata->vif.bss_conf.csa_active = true;
3958         sdata->vif.bss_conf.csa_punct_bitmap = params->punct_bitmap;
3959
3960         if (sdata->deflink.csa_block_tx)
3961                 ieee80211_stop_vif_queues(local, sdata,
3962                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3963
3964         cfg80211_ch_switch_started_notify(sdata->dev,
3965                                           &sdata->deflink.csa_chandef, 0,
3966                                           params->count, params->block_tx,
3967                                           sdata->vif.bss_conf.csa_punct_bitmap);
3968
3969         if (changed) {
3970                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3971                                                   changed);
3972                 drv_channel_switch_beacon(sdata, &params->chandef);
3973         } else {
3974                 /* if the beacon didn't change, we can finalize immediately */
3975                 ieee80211_csa_finalize(sdata);
3976         }
3977
3978 out:
3979         mutex_unlock(&local->chanctx_mtx);
3980         return err;
3981 }
3982
3983 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3984                              struct cfg80211_csa_settings *params)
3985 {
3986         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3987         struct ieee80211_local *local = sdata->local;
3988         int err;
3989
3990         mutex_lock(&local->mtx);
3991         err = __ieee80211_channel_switch(wiphy, dev, params);
3992         mutex_unlock(&local->mtx);
3993
3994         return err;
3995 }
3996
3997 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3998 {
3999         lockdep_assert_held(&local->mtx);
4000
4001         local->roc_cookie_counter++;
4002
4003         /* wow, you wrapped 64 bits ... more likely a bug */
4004         if (WARN_ON(local->roc_cookie_counter == 0))
4005                 local->roc_cookie_counter++;
4006
4007         return local->roc_cookie_counter;
4008 }
4009
4010 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
4011                              u64 *cookie, gfp_t gfp)
4012 {
4013         unsigned long spin_flags;
4014         struct sk_buff *ack_skb;
4015         int id;
4016
4017         ack_skb = skb_copy(skb, gfp);
4018         if (!ack_skb)
4019                 return -ENOMEM;
4020
4021         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
4022         id = idr_alloc(&local->ack_status_frames, ack_skb,
4023                        1, 0x2000, GFP_ATOMIC);
4024         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
4025
4026         if (id < 0) {
4027                 kfree_skb(ack_skb);
4028                 return -ENOMEM;
4029         }
4030
4031         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
4032
4033         *cookie = ieee80211_mgmt_tx_cookie(local);
4034         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
4035
4036         return 0;
4037 }
4038
4039 static void
4040 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
4041                                           struct wireless_dev *wdev,
4042                                           struct mgmt_frame_regs *upd)
4043 {
4044         struct ieee80211_local *local = wiphy_priv(wiphy);
4045         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4046         u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
4047         u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
4048         bool global_change, intf_change;
4049
4050         global_change =
4051                 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
4052                 (local->rx_mcast_action_reg !=
4053                  !!(upd->global_mcast_stypes & action_mask));
4054         local->probe_req_reg = upd->global_stypes & preq_mask;
4055         local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
4056
4057         intf_change = (sdata->vif.probe_req_reg !=
4058                        !!(upd->interface_stypes & preq_mask)) ||
4059                 (sdata->vif.rx_mcast_action_reg !=
4060                  !!(upd->interface_mcast_stypes & action_mask));
4061         sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
4062         sdata->vif.rx_mcast_action_reg =
4063                 upd->interface_mcast_stypes & action_mask;
4064
4065         if (!local->open_count)
4066                 return;
4067
4068         if (intf_change && ieee80211_sdata_running(sdata))
4069                 drv_config_iface_filter(local, sdata,
4070                                         sdata->vif.probe_req_reg ?
4071                                                 FIF_PROBE_REQ : 0,
4072                                         FIF_PROBE_REQ);
4073
4074         if (global_change)
4075                 ieee80211_configure_filter(local);
4076 }
4077
4078 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
4079 {
4080         struct ieee80211_local *local = wiphy_priv(wiphy);
4081
4082         if (local->started)
4083                 return -EOPNOTSUPP;
4084
4085         return drv_set_antenna(local, tx_ant, rx_ant);
4086 }
4087
4088 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
4089 {
4090         struct ieee80211_local *local = wiphy_priv(wiphy);
4091
4092         return drv_get_antenna(local, tx_ant, rx_ant);
4093 }
4094
4095 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
4096                                     struct net_device *dev,
4097                                     struct cfg80211_gtk_rekey_data *data)
4098 {
4099         struct ieee80211_local *local = wiphy_priv(wiphy);
4100         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4101
4102         if (!local->ops->set_rekey_data)
4103                 return -EOPNOTSUPP;
4104
4105         drv_set_rekey_data(local, sdata, data);
4106
4107         return 0;
4108 }
4109
4110 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
4111                                   const u8 *peer, u64 *cookie)
4112 {
4113         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4114         struct ieee80211_local *local = sdata->local;
4115         struct ieee80211_qos_hdr *nullfunc;
4116         struct sk_buff *skb;
4117         int size = sizeof(*nullfunc);
4118         __le16 fc;
4119         bool qos;
4120         struct ieee80211_tx_info *info;
4121         struct sta_info *sta;
4122         struct ieee80211_chanctx_conf *chanctx_conf;
4123         enum nl80211_band band;
4124         int ret;
4125
4126         /* the lock is needed to assign the cookie later */
4127         mutex_lock(&local->mtx);
4128
4129         rcu_read_lock();
4130         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
4131         if (WARN_ON(!chanctx_conf)) {
4132                 ret = -EINVAL;
4133                 goto unlock;
4134         }
4135         band = chanctx_conf->def.chan->band;
4136         sta = sta_info_get_bss(sdata, peer);
4137         if (sta) {
4138                 qos = sta->sta.wme;
4139         } else {
4140                 ret = -ENOLINK;
4141                 goto unlock;
4142         }
4143
4144         if (qos) {
4145                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4146                                  IEEE80211_STYPE_QOS_NULLFUNC |
4147                                  IEEE80211_FCTL_FROMDS);
4148         } else {
4149                 size -= 2;
4150                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4151                                  IEEE80211_STYPE_NULLFUNC |
4152                                  IEEE80211_FCTL_FROMDS);
4153         }
4154
4155         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4156         if (!skb) {
4157                 ret = -ENOMEM;
4158                 goto unlock;
4159         }
4160
4161         skb->dev = dev;
4162
4163         skb_reserve(skb, local->hw.extra_tx_headroom);
4164
4165         nullfunc = skb_put(skb, size);
4166         nullfunc->frame_control = fc;
4167         nullfunc->duration_id = 0;
4168         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4169         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4170         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4171         nullfunc->seq_ctrl = 0;
4172
4173         info = IEEE80211_SKB_CB(skb);
4174
4175         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4176                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4177         info->band = band;
4178
4179         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4180         skb->priority = 7;
4181         if (qos)
4182                 nullfunc->qos_ctrl = cpu_to_le16(7);
4183
4184         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4185         if (ret) {
4186                 kfree_skb(skb);
4187                 goto unlock;
4188         }
4189
4190         local_bh_disable();
4191         ieee80211_xmit(sdata, sta, skb);
4192         local_bh_enable();
4193
4194         ret = 0;
4195 unlock:
4196         rcu_read_unlock();
4197         mutex_unlock(&local->mtx);
4198
4199         return ret;
4200 }
4201
4202 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4203                                      struct wireless_dev *wdev,
4204                                      unsigned int link_id,
4205                                      struct cfg80211_chan_def *chandef)
4206 {
4207         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4208         struct ieee80211_local *local = wiphy_priv(wiphy);
4209         struct ieee80211_chanctx_conf *chanctx_conf;
4210         struct ieee80211_link_data *link;
4211         int ret = -ENODATA;
4212
4213         rcu_read_lock();
4214         link = rcu_dereference(sdata->link[link_id]);
4215         if (!link) {
4216                 ret = -ENOLINK;
4217                 goto out;
4218         }
4219
4220         chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4221         if (chanctx_conf) {
4222                 *chandef = link->conf->chandef;
4223                 ret = 0;
4224         } else if (local->open_count > 0 &&
4225                    local->open_count == local->monitors &&
4226                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4227                 if (local->use_chanctx)
4228                         *chandef = local->monitor_chandef;
4229                 else
4230                         *chandef = local->_oper_chandef;
4231                 ret = 0;
4232         }
4233 out:
4234         rcu_read_unlock();
4235
4236         return ret;
4237 }
4238
4239 #ifdef CONFIG_PM
4240 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4241 {
4242         drv_set_wakeup(wiphy_priv(wiphy), enabled);
4243 }
4244 #endif
4245
4246 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4247                                  struct net_device *dev,
4248                                  struct cfg80211_qos_map *qos_map)
4249 {
4250         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4251         struct mac80211_qos_map *new_qos_map, *old_qos_map;
4252
4253         if (qos_map) {
4254                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4255                 if (!new_qos_map)
4256                         return -ENOMEM;
4257                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4258         } else {
4259                 /* A NULL qos_map was passed to disable QoS mapping */
4260                 new_qos_map = NULL;
4261         }
4262
4263         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4264         rcu_assign_pointer(sdata->qos_map, new_qos_map);
4265         if (old_qos_map)
4266                 kfree_rcu(old_qos_map, rcu_head);
4267
4268         return 0;
4269 }
4270
4271 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4272                                       struct net_device *dev,
4273                                       unsigned int link_id,
4274                                       struct cfg80211_chan_def *chandef)
4275 {
4276         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4277         struct ieee80211_link_data *link;
4278         int ret;
4279         u64 changed = 0;
4280
4281         link = sdata_dereference(sdata->link[link_id], sdata);
4282
4283         ret = ieee80211_link_change_bandwidth(link, chandef, &changed);
4284         if (ret == 0)
4285                 ieee80211_link_info_change_notify(sdata, link, changed);
4286
4287         return ret;
4288 }
4289
4290 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4291                                u8 tsid, const u8 *peer, u8 up,
4292                                u16 admitted_time)
4293 {
4294         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4295         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4296         int ac = ieee802_1d_to_ac[up];
4297
4298         if (sdata->vif.type != NL80211_IFTYPE_STATION)
4299                 return -EOPNOTSUPP;
4300
4301         if (!(sdata->wmm_acm & BIT(up)))
4302                 return -EINVAL;
4303
4304         if (ifmgd->tx_tspec[ac].admitted_time)
4305                 return -EBUSY;
4306
4307         if (admitted_time) {
4308                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4309                 ifmgd->tx_tspec[ac].tsid = tsid;
4310                 ifmgd->tx_tspec[ac].up = up;
4311         }
4312
4313         return 0;
4314 }
4315
4316 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4317                                u8 tsid, const u8 *peer)
4318 {
4319         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4320         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4321         struct ieee80211_local *local = wiphy_priv(wiphy);
4322         int ac;
4323
4324         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4325                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4326
4327                 /* skip unused entries */
4328                 if (!tx_tspec->admitted_time)
4329                         continue;
4330
4331                 if (tx_tspec->tsid != tsid)
4332                         continue;
4333
4334                 /* due to this new packets will be reassigned to non-ACM ACs */
4335                 tx_tspec->up = -1;
4336
4337                 /* Make sure that all packets have been sent to avoid to
4338                  * restore the QoS params on packets that are still on the
4339                  * queues.
4340                  */
4341                 synchronize_net();
4342                 ieee80211_flush_queues(local, sdata, false);
4343
4344                 /* restore the normal QoS parameters
4345                  * (unconditionally to avoid races)
4346                  */
4347                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4348                 tx_tspec->downgraded = false;
4349                 ieee80211_sta_handle_tspec_ac_params(sdata);
4350
4351                 /* finally clear all the data */
4352                 memset(tx_tspec, 0, sizeof(*tx_tspec));
4353
4354                 return 0;
4355         }
4356
4357         return -ENOENT;
4358 }
4359
4360 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4361                                    u8 inst_id,
4362                                    enum nl80211_nan_func_term_reason reason,
4363                                    gfp_t gfp)
4364 {
4365         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4366         struct cfg80211_nan_func *func;
4367         u64 cookie;
4368
4369         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4370                 return;
4371
4372         spin_lock_bh(&sdata->u.nan.func_lock);
4373
4374         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4375         if (WARN_ON(!func)) {
4376                 spin_unlock_bh(&sdata->u.nan.func_lock);
4377                 return;
4378         }
4379
4380         cookie = func->cookie;
4381         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4382
4383         spin_unlock_bh(&sdata->u.nan.func_lock);
4384
4385         cfg80211_free_nan_func(func);
4386
4387         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4388                                      reason, cookie, gfp);
4389 }
4390 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4391
4392 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4393                               struct cfg80211_nan_match_params *match,
4394                               gfp_t gfp)
4395 {
4396         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4397         struct cfg80211_nan_func *func;
4398
4399         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4400                 return;
4401
4402         spin_lock_bh(&sdata->u.nan.func_lock);
4403
4404         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
4405         if (WARN_ON(!func)) {
4406                 spin_unlock_bh(&sdata->u.nan.func_lock);
4407                 return;
4408         }
4409         match->cookie = func->cookie;
4410
4411         spin_unlock_bh(&sdata->u.nan.func_lock);
4412
4413         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4414 }
4415 EXPORT_SYMBOL(ieee80211_nan_func_match);
4416
4417 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4418                                               struct net_device *dev,
4419                                               const bool enabled)
4420 {
4421         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4422
4423         sdata->u.ap.multicast_to_unicast = enabled;
4424
4425         return 0;
4426 }
4427
4428 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4429                               struct txq_info *txqi)
4430 {
4431         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4432                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4433                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4434         }
4435
4436         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4437                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4438                 txqstats->backlog_packets = txqi->tin.backlog_packets;
4439         }
4440
4441         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4442                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4443                 txqstats->flows = txqi->tin.flows;
4444         }
4445
4446         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4447                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4448                 txqstats->drops = txqi->cstats.drop_count;
4449         }
4450
4451         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4452                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4453                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4454         }
4455
4456         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4457                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4458                 txqstats->overlimit = txqi->tin.overlimit;
4459         }
4460
4461         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4462                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4463                 txqstats->collisions = txqi->tin.collisions;
4464         }
4465
4466         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4467                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4468                 txqstats->tx_bytes = txqi->tin.tx_bytes;
4469         }
4470
4471         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4472                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4473                 txqstats->tx_packets = txqi->tin.tx_packets;
4474         }
4475 }
4476
4477 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4478                                    struct wireless_dev *wdev,
4479                                    struct cfg80211_txq_stats *txqstats)
4480 {
4481         struct ieee80211_local *local = wiphy_priv(wiphy);
4482         struct ieee80211_sub_if_data *sdata;
4483         int ret = 0;
4484
4485         spin_lock_bh(&local->fq.lock);
4486         rcu_read_lock();
4487
4488         if (wdev) {
4489                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4490                 if (!sdata->vif.txq) {
4491                         ret = 1;
4492                         goto out;
4493                 }
4494                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4495         } else {
4496                 /* phy stats */
4497                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4498                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4499                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4500                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4501                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
4502                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4503                 txqstats->backlog_packets = local->fq.backlog;
4504                 txqstats->backlog_bytes = local->fq.memory_usage;
4505                 txqstats->overlimit = local->fq.overlimit;
4506                 txqstats->overmemory = local->fq.overmemory;
4507                 txqstats->collisions = local->fq.collisions;
4508                 txqstats->max_flows = local->fq.flows_cnt;
4509         }
4510
4511 out:
4512         rcu_read_unlock();
4513         spin_unlock_bh(&local->fq.lock);
4514
4515         return ret;
4516 }
4517
4518 static int
4519 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4520                                   struct net_device *dev,
4521                                   struct cfg80211_ftm_responder_stats *ftm_stats)
4522 {
4523         struct ieee80211_local *local = wiphy_priv(wiphy);
4524         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4525
4526         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4527 }
4528
4529 static int
4530 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4531                      struct cfg80211_pmsr_request *request)
4532 {
4533         struct ieee80211_local *local = wiphy_priv(wiphy);
4534         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4535
4536         return drv_start_pmsr(local, sdata, request);
4537 }
4538
4539 static void
4540 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4541                      struct cfg80211_pmsr_request *request)
4542 {
4543         struct ieee80211_local *local = wiphy_priv(wiphy);
4544         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4545
4546         return drv_abort_pmsr(local, sdata, request);
4547 }
4548
4549 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4550                                     struct net_device *dev,
4551                                     struct cfg80211_tid_config *tid_conf)
4552 {
4553         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4554         struct sta_info *sta;
4555         int ret;
4556
4557         if (!sdata->local->ops->set_tid_config)
4558                 return -EOPNOTSUPP;
4559
4560         if (!tid_conf->peer)
4561                 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4562
4563         mutex_lock(&sdata->local->sta_mtx);
4564         sta = sta_info_get_bss(sdata, tid_conf->peer);
4565         if (!sta) {
4566                 mutex_unlock(&sdata->local->sta_mtx);
4567                 return -ENOENT;
4568         }
4569
4570         ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4571         mutex_unlock(&sdata->local->sta_mtx);
4572
4573         return ret;
4574 }
4575
4576 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4577                                       struct net_device *dev,
4578                                       const u8 *peer, u8 tids)
4579 {
4580         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4581         struct sta_info *sta;
4582         int ret;
4583
4584         if (!sdata->local->ops->reset_tid_config)
4585                 return -EOPNOTSUPP;
4586
4587         if (!peer)
4588                 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4589
4590         mutex_lock(&sdata->local->sta_mtx);
4591         sta = sta_info_get_bss(sdata, peer);
4592         if (!sta) {
4593                 mutex_unlock(&sdata->local->sta_mtx);
4594                 return -ENOENT;
4595         }
4596
4597         ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4598         mutex_unlock(&sdata->local->sta_mtx);
4599
4600         return ret;
4601 }
4602
4603 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4604                                    struct cfg80211_sar_specs *sar)
4605 {
4606         struct ieee80211_local *local = wiphy_priv(wiphy);
4607
4608         if (!local->ops->set_sar_specs)
4609                 return -EOPNOTSUPP;
4610
4611         return local->ops->set_sar_specs(&local->hw, sar);
4612 }
4613
4614 static int
4615 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4616                                         u32 *changed)
4617 {
4618         switch (sdata->vif.type) {
4619         case NL80211_IFTYPE_AP: {
4620                 int ret;
4621
4622                 if (!sdata->deflink.u.ap.next_beacon)
4623                         return -EINVAL;
4624
4625                 ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4626                                               sdata->deflink.u.ap.next_beacon,
4627                                               NULL, NULL);
4628                 ieee80211_free_next_beacon(&sdata->deflink);
4629
4630                 if (ret < 0)
4631                         return ret;
4632
4633                 *changed |= ret;
4634                 break;
4635         }
4636         default:
4637                 WARN_ON_ONCE(1);
4638                 return -EINVAL;
4639         }
4640
4641         return 0;
4642 }
4643
4644 static int
4645 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4646                                   struct cfg80211_color_change_settings *params,
4647                                   u32 *changed)
4648 {
4649         struct ieee80211_color_change_settings color_change = {};
4650         int err;
4651
4652         switch (sdata->vif.type) {
4653         case NL80211_IFTYPE_AP:
4654                 sdata->deflink.u.ap.next_beacon =
4655                         cfg80211_beacon_dup(&params->beacon_next);
4656                 if (!sdata->deflink.u.ap.next_beacon)
4657                         return -ENOMEM;
4658
4659                 if (params->count <= 1)
4660                         break;
4661
4662                 color_change.counter_offset_beacon =
4663                         params->counter_offset_beacon;
4664                 color_change.counter_offset_presp =
4665                         params->counter_offset_presp;
4666                 color_change.count = params->count;
4667
4668                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4669                                               &params->beacon_color_change,
4670                                               NULL, &color_change);
4671                 if (err < 0) {
4672                         ieee80211_free_next_beacon(&sdata->deflink);
4673                         return err;
4674                 }
4675                 *changed |= err;
4676                 break;
4677         default:
4678                 return -EOPNOTSUPP;
4679         }
4680
4681         return 0;
4682 }
4683
4684 static void
4685 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4686                                          u8 color, int enable, u32 changed)
4687 {
4688         sdata->vif.bss_conf.he_bss_color.color = color;
4689         sdata->vif.bss_conf.he_bss_color.enabled = enable;
4690         changed |= BSS_CHANGED_HE_BSS_COLOR;
4691
4692         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4693
4694         if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4695                 struct ieee80211_sub_if_data *child;
4696
4697                 mutex_lock(&sdata->local->iflist_mtx);
4698                 list_for_each_entry(child, &sdata->local->interfaces, list) {
4699                         if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4700                                 child->vif.bss_conf.he_bss_color.color = color;
4701                                 child->vif.bss_conf.he_bss_color.enabled = enable;
4702                                 ieee80211_link_info_change_notify(child,
4703                                                                   &child->deflink,
4704                                                                   BSS_CHANGED_HE_BSS_COLOR);
4705                         }
4706                 }
4707                 mutex_unlock(&sdata->local->iflist_mtx);
4708         }
4709 }
4710
4711 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4712 {
4713         struct ieee80211_local *local = sdata->local;
4714         u32 changed = 0;
4715         int err;
4716
4717         sdata_assert_lock(sdata);
4718         lockdep_assert_held(&local->mtx);
4719
4720         sdata->vif.bss_conf.color_change_active = false;
4721
4722         err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4723         if (err) {
4724                 cfg80211_color_change_aborted_notify(sdata->dev);
4725                 return err;
4726         }
4727
4728         ieee80211_color_change_bss_config_notify(sdata,
4729                                                  sdata->vif.bss_conf.color_change_color,
4730                                                  1, changed);
4731         cfg80211_color_change_notify(sdata->dev);
4732
4733         return 0;
4734 }
4735
4736 void ieee80211_color_change_finalize_work(struct work_struct *work)
4737 {
4738         struct ieee80211_sub_if_data *sdata =
4739                 container_of(work, struct ieee80211_sub_if_data,
4740                              deflink.color_change_finalize_work);
4741         struct ieee80211_local *local = sdata->local;
4742
4743         sdata_lock(sdata);
4744         mutex_lock(&local->mtx);
4745
4746         /* AP might have been stopped while waiting for the lock. */
4747         if (!sdata->vif.bss_conf.color_change_active)
4748                 goto unlock;
4749
4750         if (!ieee80211_sdata_running(sdata))
4751                 goto unlock;
4752
4753         ieee80211_color_change_finalize(sdata);
4754
4755 unlock:
4756         mutex_unlock(&local->mtx);
4757         sdata_unlock(sdata);
4758 }
4759
4760 void ieee80211_color_collision_detection_work(struct work_struct *work)
4761 {
4762         struct delayed_work *delayed_work = to_delayed_work(work);
4763         struct ieee80211_link_data *link =
4764                 container_of(delayed_work, struct ieee80211_link_data,
4765                              color_collision_detect_work);
4766         struct ieee80211_sub_if_data *sdata = link->sdata;
4767
4768         sdata_lock(sdata);
4769         cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap);
4770         sdata_unlock(sdata);
4771 }
4772
4773 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4774 {
4775         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4776
4777         ieee80211_queue_work(&sdata->local->hw,
4778                              &sdata->deflink.color_change_finalize_work);
4779 }
4780 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4781
4782 void
4783 ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4784                                        u64 color_bitmap, gfp_t gfp)
4785 {
4786         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4787         struct ieee80211_link_data *link = &sdata->deflink;
4788
4789         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4790                 return;
4791
4792         if (delayed_work_pending(&link->color_collision_detect_work))
4793                 return;
4794
4795         link->color_bitmap = color_bitmap;
4796         /* queue the color collision detection event every 500 ms in order to
4797          * avoid sending too much netlink messages to userspace.
4798          */
4799         ieee80211_queue_delayed_work(&sdata->local->hw,
4800                                      &link->color_collision_detect_work,
4801                                      msecs_to_jiffies(500));
4802 }
4803 EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify);
4804
4805 static int
4806 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4807                        struct cfg80211_color_change_settings *params)
4808 {
4809         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4810         struct ieee80211_local *local = sdata->local;
4811         u32 changed = 0;
4812         int err;
4813
4814         sdata_assert_lock(sdata);
4815
4816         if (sdata->vif.bss_conf.nontransmitted)
4817                 return -EINVAL;
4818
4819         mutex_lock(&local->mtx);
4820
4821         /* don't allow another color change if one is already active or if csa
4822          * is active
4823          */
4824         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4825                 err = -EBUSY;
4826                 goto out;
4827         }
4828
4829         err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4830         if (err)
4831                 goto out;
4832
4833         sdata->vif.bss_conf.color_change_active = true;
4834         sdata->vif.bss_conf.color_change_color = params->color;
4835
4836         cfg80211_color_change_started_notify(sdata->dev, params->count);
4837
4838         if (changed)
4839                 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4840         else
4841                 /* if the beacon didn't change, we can finalize immediately */
4842                 ieee80211_color_change_finalize(sdata);
4843
4844 out:
4845         mutex_unlock(&local->mtx);
4846
4847         return err;
4848 }
4849
4850 static int
4851 ieee80211_set_radar_background(struct wiphy *wiphy,
4852                                struct cfg80211_chan_def *chandef)
4853 {
4854         struct ieee80211_local *local = wiphy_priv(wiphy);
4855
4856         if (!local->ops->set_radar_background)
4857                 return -EOPNOTSUPP;
4858
4859         return local->ops->set_radar_background(&local->hw, chandef);
4860 }
4861
4862 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4863                                    struct wireless_dev *wdev,
4864                                    unsigned int link_id)
4865 {
4866         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4867
4868         if (wdev->use_4addr)
4869                 return -EOPNOTSUPP;
4870
4871         return ieee80211_vif_set_links(sdata, wdev->valid_links);
4872 }
4873
4874 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4875                                     struct wireless_dev *wdev,
4876                                     unsigned int link_id)
4877 {
4878         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4879
4880         ieee80211_vif_set_links(sdata, wdev->valid_links);
4881 }
4882
4883 static int sta_add_link_station(struct ieee80211_local *local,
4884                                 struct ieee80211_sub_if_data *sdata,
4885                                 struct link_station_parameters *params)
4886 {
4887         struct sta_info *sta;
4888         int ret;
4889
4890         sta = sta_info_get_bss(sdata, params->mld_mac);
4891         if (!sta)
4892                 return -ENOENT;
4893
4894         if (!sta->sta.valid_links)
4895                 return -EINVAL;
4896
4897         if (sta->sta.valid_links & BIT(params->link_id))
4898                 return -EALREADY;
4899
4900         ret = ieee80211_sta_allocate_link(sta, params->link_id);
4901         if (ret)
4902                 return ret;
4903
4904         ret = sta_link_apply_parameters(local, sta, true, params);
4905         if (ret) {
4906                 ieee80211_sta_free_link(sta, params->link_id);
4907                 return ret;
4908         }
4909
4910         /* ieee80211_sta_activate_link frees the link upon failure */
4911         return ieee80211_sta_activate_link(sta, params->link_id);
4912 }
4913
4914 static int
4915 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4916                            struct link_station_parameters *params)
4917 {
4918         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4919         struct ieee80211_local *local = wiphy_priv(wiphy);
4920         int ret;
4921
4922         mutex_lock(&sdata->local->sta_mtx);
4923         ret = sta_add_link_station(local, sdata, params);
4924         mutex_unlock(&sdata->local->sta_mtx);
4925
4926         return ret;
4927 }
4928
4929 static int sta_mod_link_station(struct ieee80211_local *local,
4930                                 struct ieee80211_sub_if_data *sdata,
4931                                 struct link_station_parameters *params)
4932 {
4933         struct sta_info *sta;
4934
4935         sta = sta_info_get_bss(sdata, params->mld_mac);
4936         if (!sta)
4937                 return -ENOENT;
4938
4939         if (!(sta->sta.valid_links & BIT(params->link_id)))
4940                 return -EINVAL;
4941
4942         return sta_link_apply_parameters(local, sta, false, params);
4943 }
4944
4945 static int
4946 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4947                            struct link_station_parameters *params)
4948 {
4949         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4950         struct ieee80211_local *local = wiphy_priv(wiphy);
4951         int ret;
4952
4953         mutex_lock(&sdata->local->sta_mtx);
4954         ret = sta_mod_link_station(local, sdata, params);
4955         mutex_unlock(&sdata->local->sta_mtx);
4956
4957         return ret;
4958 }
4959
4960 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4961                                 struct link_station_del_parameters *params)
4962 {
4963         struct sta_info *sta;
4964
4965         sta = sta_info_get_bss(sdata, params->mld_mac);
4966         if (!sta)
4967                 return -ENOENT;
4968
4969         if (!(sta->sta.valid_links & BIT(params->link_id)))
4970                 return -EINVAL;
4971
4972         /* must not create a STA without links */
4973         if (sta->sta.valid_links == BIT(params->link_id))
4974                 return -EINVAL;
4975
4976         ieee80211_sta_remove_link(sta, params->link_id);
4977
4978         return 0;
4979 }
4980
4981 static int
4982 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
4983                            struct link_station_del_parameters *params)
4984 {
4985         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4986         int ret;
4987
4988         mutex_lock(&sdata->local->sta_mtx);
4989         ret = sta_del_link_station(sdata, params);
4990         mutex_unlock(&sdata->local->sta_mtx);
4991
4992         return ret;
4993 }
4994
4995 static int ieee80211_set_hw_timestamp(struct wiphy *wiphy,
4996                                       struct net_device *dev,
4997                                       struct cfg80211_set_hw_timestamp *hwts)
4998 {
4999         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5000         struct ieee80211_local *local = sdata->local;
5001
5002         if (!local->ops->set_hw_timestamp)
5003                 return -EOPNOTSUPP;
5004
5005         if (!check_sdata_in_driver(sdata))
5006                 return -EIO;
5007
5008         return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts);
5009 }
5010
5011 const struct cfg80211_ops mac80211_config_ops = {
5012         .add_virtual_intf = ieee80211_add_iface,
5013         .del_virtual_intf = ieee80211_del_iface,
5014         .change_virtual_intf = ieee80211_change_iface,
5015         .start_p2p_device = ieee80211_start_p2p_device,
5016         .stop_p2p_device = ieee80211_stop_p2p_device,
5017         .add_key = ieee80211_add_key,
5018         .del_key = ieee80211_del_key,
5019         .get_key = ieee80211_get_key,
5020         .set_default_key = ieee80211_config_default_key,
5021         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
5022         .set_default_beacon_key = ieee80211_config_default_beacon_key,
5023         .start_ap = ieee80211_start_ap,
5024         .change_beacon = ieee80211_change_beacon,
5025         .stop_ap = ieee80211_stop_ap,
5026         .add_station = ieee80211_add_station,
5027         .del_station = ieee80211_del_station,
5028         .change_station = ieee80211_change_station,
5029         .get_station = ieee80211_get_station,
5030         .dump_station = ieee80211_dump_station,
5031         .dump_survey = ieee80211_dump_survey,
5032 #ifdef CONFIG_MAC80211_MESH
5033         .add_mpath = ieee80211_add_mpath,
5034         .del_mpath = ieee80211_del_mpath,
5035         .change_mpath = ieee80211_change_mpath,
5036         .get_mpath = ieee80211_get_mpath,
5037         .dump_mpath = ieee80211_dump_mpath,
5038         .get_mpp = ieee80211_get_mpp,
5039         .dump_mpp = ieee80211_dump_mpp,
5040         .update_mesh_config = ieee80211_update_mesh_config,
5041         .get_mesh_config = ieee80211_get_mesh_config,
5042         .join_mesh = ieee80211_join_mesh,
5043         .leave_mesh = ieee80211_leave_mesh,
5044 #endif
5045         .join_ocb = ieee80211_join_ocb,
5046         .leave_ocb = ieee80211_leave_ocb,
5047         .change_bss = ieee80211_change_bss,
5048         .set_txq_params = ieee80211_set_txq_params,
5049         .set_monitor_channel = ieee80211_set_monitor_channel,
5050         .suspend = ieee80211_suspend,
5051         .resume = ieee80211_resume,
5052         .scan = ieee80211_scan,
5053         .abort_scan = ieee80211_abort_scan,
5054         .sched_scan_start = ieee80211_sched_scan_start,
5055         .sched_scan_stop = ieee80211_sched_scan_stop,
5056         .auth = ieee80211_auth,
5057         .assoc = ieee80211_assoc,
5058         .deauth = ieee80211_deauth,
5059         .disassoc = ieee80211_disassoc,
5060         .join_ibss = ieee80211_join_ibss,
5061         .leave_ibss = ieee80211_leave_ibss,
5062         .set_mcast_rate = ieee80211_set_mcast_rate,
5063         .set_wiphy_params = ieee80211_set_wiphy_params,
5064         .set_tx_power = ieee80211_set_tx_power,
5065         .get_tx_power = ieee80211_get_tx_power,
5066         .rfkill_poll = ieee80211_rfkill_poll,
5067         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
5068         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
5069         .set_power_mgmt = ieee80211_set_power_mgmt,
5070         .set_bitrate_mask = ieee80211_set_bitrate_mask,
5071         .remain_on_channel = ieee80211_remain_on_channel,
5072         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
5073         .mgmt_tx = ieee80211_mgmt_tx,
5074         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
5075         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
5076         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
5077         .update_mgmt_frame_registrations =
5078                 ieee80211_update_mgmt_frame_registrations,
5079         .set_antenna = ieee80211_set_antenna,
5080         .get_antenna = ieee80211_get_antenna,
5081         .set_rekey_data = ieee80211_set_rekey_data,
5082         .tdls_oper = ieee80211_tdls_oper,
5083         .tdls_mgmt = ieee80211_tdls_mgmt,
5084         .tdls_channel_switch = ieee80211_tdls_channel_switch,
5085         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
5086         .probe_client = ieee80211_probe_client,
5087         .set_noack_map = ieee80211_set_noack_map,
5088 #ifdef CONFIG_PM
5089         .set_wakeup = ieee80211_set_wakeup,
5090 #endif
5091         .get_channel = ieee80211_cfg_get_channel,
5092         .start_radar_detection = ieee80211_start_radar_detection,
5093         .end_cac = ieee80211_end_cac,
5094         .channel_switch = ieee80211_channel_switch,
5095         .set_qos_map = ieee80211_set_qos_map,
5096         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
5097         .add_tx_ts = ieee80211_add_tx_ts,
5098         .del_tx_ts = ieee80211_del_tx_ts,
5099         .start_nan = ieee80211_start_nan,
5100         .stop_nan = ieee80211_stop_nan,
5101         .nan_change_conf = ieee80211_nan_change_conf,
5102         .add_nan_func = ieee80211_add_nan_func,
5103         .del_nan_func = ieee80211_del_nan_func,
5104         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
5105         .tx_control_port = ieee80211_tx_control_port,
5106         .get_txq_stats = ieee80211_get_txq_stats,
5107         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
5108         .start_pmsr = ieee80211_start_pmsr,
5109         .abort_pmsr = ieee80211_abort_pmsr,
5110         .probe_mesh_link = ieee80211_probe_mesh_link,
5111         .set_tid_config = ieee80211_set_tid_config,
5112         .reset_tid_config = ieee80211_reset_tid_config,
5113         .set_sar_specs = ieee80211_set_sar_specs,
5114         .color_change = ieee80211_color_change,
5115         .set_radar_background = ieee80211_set_radar_background,
5116         .add_intf_link = ieee80211_add_intf_link,
5117         .del_intf_link = ieee80211_del_intf_link,
5118         .add_link_station = ieee80211_add_link_station,
5119         .mod_link_station = ieee80211_mod_link_station,
5120         .del_link_station = ieee80211_del_link_station,
5121         .set_hw_timestamp = ieee80211_set_hw_timestamp,
5122 };