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
 151         if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
 152                 return -EINVAL;
 153
 154         tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
 155         if (!tx_sdata)
 156                 return -EINVAL;
 157
 158         if (tx_sdata == sdata) {
 159                 sdata->vif.mbssid_tx_vif = &sdata->vif;
 160         } else {
 161                 sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
 162                 link_conf->nontransmitted = true;
 163                 link_conf->bssid_index = params.index;
 164         }
 165         if (params.ema)
 166                 link_conf->ema_ap = true;
 167
 168         return 0;
 169 }
 170
 171 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 172                                                 const char *name,
 173                                                 unsigned char name_assign_type,
 174                                                 enum nl80211_iftype type,
 175                                                 struct vif_params *params)
 176 {
 177         struct ieee80211_local *local = wiphy_priv(wiphy);
 178         struct wireless_dev *wdev;
 179         struct ieee80211_sub_if_data *sdata;
 180         int err;
 181
 182         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 183         if (err)
 184                 return ERR_PTR(err);
 185
 186         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 187
 188         if (type == NL80211_IFTYPE_MONITOR) {
 189                 err = ieee80211_set_mon_options(sdata, params);
 190                 if (err) {
 191                         ieee80211_if_remove(sdata);
 192                         return NULL;
 193                 }
 194         }
 195
 196         return wdev;
 197 }
 198
 199 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 200 {
 201         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 202
 203         return 0;
 204 }
 205
 206 static int ieee80211_change_iface(struct wiphy *wiphy,
 207                                   struct net_device *dev,
 208                                   enum nl80211_iftype type,
 209                                   struct vif_params *params)
 210 {
 211         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 212         struct ieee80211_local *local = sdata->local;
 213         struct sta_info *sta;
 214         int ret;
 215
 216         ret = ieee80211_if_change_type(sdata, type);
 217         if (ret)
 218                 return ret;
 219
 220         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 221                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 222                 ieee80211_check_fast_rx_iface(sdata);
 223         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 224                 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 225
 226                 if (params->use_4addr == ifmgd->use_4addr)
 227                         return 0;
 228
 229                 sdata->u.mgd.use_4addr = params->use_4addr;
 230                 if (!ifmgd->associated)
 231                         return 0;
 232
 233                 mutex_lock(&local->sta_mtx);
 234                 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
 235                 if (sta)
 236                         drv_sta_set_4addr(local, sdata, &sta->sta,
 237                                           params->use_4addr);
 238                 mutex_unlock(&local->sta_mtx);
 239
 240                 if (params->use_4addr)
 241                         ieee80211_send_4addr_nullfunc(local, sdata);
 242         }
 243
 244         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 245                 ret = ieee80211_set_mon_options(sdata, params);
 246                 if (ret)
 247                         return ret;
 248         }
 249
 250         return 0;
 251 }
 252
 253 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 254                                       struct wireless_dev *wdev)
 255 {
 256         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 257         int ret;
 258
 259         mutex_lock(&sdata->local->chanctx_mtx);
 260         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 261         mutex_unlock(&sdata->local->chanctx_mtx);
 262         if (ret < 0)
 263                 return ret;
 264
 265         return ieee80211_do_open(wdev, true);
 266 }
 267
 268 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 269                                       struct wireless_dev *wdev)
 270 {
 271         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 272 }
 273
 274 static int ieee80211_start_nan(struct wiphy *wiphy,
 275                                struct wireless_dev *wdev,
 276                                struct cfg80211_nan_conf *conf)
 277 {
 278         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 279         int ret;
 280
 281         mutex_lock(&sdata->local->chanctx_mtx);
 282         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 283         mutex_unlock(&sdata->local->chanctx_mtx);
 284         if (ret < 0)
 285                 return ret;
 286
 287         ret = ieee80211_do_open(wdev, true);
 288         if (ret)
 289                 return ret;
 290
 291         ret = drv_start_nan(sdata->local, sdata, conf);
 292         if (ret)
 293                 ieee80211_sdata_stop(sdata);
 294
 295         sdata->u.nan.conf = *conf;
 296
 297         return ret;
 298 }
 299
 300 static void ieee80211_stop_nan(struct wiphy *wiphy,
 301                                struct wireless_dev *wdev)
 302 {
 303         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 304
 305         drv_stop_nan(sdata->local, sdata);
 306         ieee80211_sdata_stop(sdata);
 307 }
 308
 309 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 310                                      struct wireless_dev *wdev,
 311                                      struct cfg80211_nan_conf *conf,
 312                                      u32 changes)
 313 {
 314         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 315         struct cfg80211_nan_conf new_conf;
 316         int ret = 0;
 317
 318         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 319                 return -EOPNOTSUPP;
 320
 321         if (!ieee80211_sdata_running(sdata))
 322                 return -ENETDOWN;
 323
 324         new_conf = sdata->u.nan.conf;
 325
 326         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 327                 new_conf.master_pref = conf->master_pref;
 328
 329         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 330                 new_conf.bands = conf->bands;
 331
 332         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 333         if (!ret)
 334                 sdata->u.nan.conf = new_conf;
 335
 336         return ret;
 337 }
 338
 339 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 340                                   struct wireless_dev *wdev,
 341                                   struct cfg80211_nan_func *nan_func)
 342 {
 343         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 344         int ret;
 345
 346         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 347                 return -EOPNOTSUPP;
 348
 349         if (!ieee80211_sdata_running(sdata))
 350                 return -ENETDOWN;
 351
 352         spin_lock_bh(&sdata->u.nan.func_lock);
 353
 354         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 355                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 356                         GFP_ATOMIC);
 357         spin_unlock_bh(&sdata->u.nan.func_lock);
 358
 359         if (ret < 0)
 360                 return ret;
 361
 362         nan_func->instance_id = ret;
 363
 364         WARN_ON(nan_func->instance_id == 0);
 365
 366         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 367         if (ret) {
 368                 spin_lock_bh(&sdata->u.nan.func_lock);
 369                 idr_remove(&sdata->u.nan.function_inst_ids,
 370                            nan_func->instance_id);
 371                 spin_unlock_bh(&sdata->u.nan.func_lock);
 372         }
 373
 374         return ret;
 375 }
 376
 377 static struct cfg80211_nan_func *
 378 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 379                                   u64 cookie)
 380 {
 381         struct cfg80211_nan_func *func;
 382         int id;
 383
 384         lockdep_assert_held(&sdata->u.nan.func_lock);
 385
 386         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 387                 if (func->cookie == cookie)
 388                         return func;
 389         }
 390
 391         return NULL;
 392 }
 393
 394 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 395                                   struct wireless_dev *wdev, u64 cookie)
 396 {
 397         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 398         struct cfg80211_nan_func *func;
 399         u8 instance_id = 0;
 400
 401         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 402             !ieee80211_sdata_running(sdata))
 403                 return;
 404
 405         spin_lock_bh(&sdata->u.nan.func_lock);
 406
 407         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 408         if (func)
 409                 instance_id = func->instance_id;
 410
 411         spin_unlock_bh(&sdata->u.nan.func_lock);
 412
 413         if (instance_id)
 414                 drv_del_nan_func(sdata->local, sdata, instance_id);
 415 }
 416
 417 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 418                                   struct net_device *dev,
 419                                   u16 noack_map)
 420 {
 421         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 422
 423         sdata->noack_map = noack_map;
 424
 425         ieee80211_check_fast_xmit_iface(sdata);
 426
 427         return 0;
 428 }
 429
 430 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
 431                             const u8 *mac_addr, u8 key_idx)
 432 {
 433         struct ieee80211_local *local = sdata->local;
 434         struct ieee80211_key *key;
 435         struct sta_info *sta;
 436         int ret = -EINVAL;
 437
 438         if (!wiphy_ext_feature_isset(local->hw.wiphy,
 439                                      NL80211_EXT_FEATURE_EXT_KEY_ID))
 440                 return -EINVAL;
 441
 442         sta = sta_info_get_bss(sdata, mac_addr);
 443
 444         if (!sta)
 445                 return -EINVAL;
 446
 447         if (sta->ptk_idx == key_idx)
 448                 return 0;
 449
 450         mutex_lock(&local->key_mtx);
 451         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 452
 453         if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
 454                 ret = ieee80211_set_tx_key(key);
 455
 456         mutex_unlock(&local->key_mtx);
 457         return ret;
 458 }
 459
 460 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 461                              int link_id, u8 key_idx, bool pairwise,
 462                              const u8 *mac_addr, struct key_params *params)
 463 {
 464         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 465         struct ieee80211_link_data *link =
 466                 ieee80211_link_or_deflink(sdata, link_id, false);
 467         struct ieee80211_local *local = sdata->local;
 468         struct sta_info *sta = NULL;
 469         struct ieee80211_key *key;
 470         int err;
 471
 472         if (!ieee80211_sdata_running(sdata))
 473                 return -ENETDOWN;
 474
 475         if (IS_ERR(link))
 476                 return PTR_ERR(link);
 477
 478         if (pairwise && params->mode == NL80211_KEY_SET_TX)
 479                 return ieee80211_set_tx(sdata, mac_addr, key_idx);
 480
 481         /* reject WEP and TKIP keys if WEP failed to initialize */
 482         switch (params->cipher) {
 483         case WLAN_CIPHER_SUITE_WEP40:
 484         case WLAN_CIPHER_SUITE_TKIP:
 485         case WLAN_CIPHER_SUITE_WEP104:
 486                 if (link_id >= 0)
 487                         return -EINVAL;
 488                 if (WARN_ON_ONCE(fips_enabled))
 489                         return -EINVAL;
 490                 break;
 491         default:
 492                 break;
 493         }
 494
 495         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 496                                   params->key, params->seq_len, params->seq);
 497         if (IS_ERR(key))
 498                 return PTR_ERR(key);
 499
 500         key->conf.link_id = link_id;
 501
 502         if (pairwise)
 503                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 504
 505         if (params->mode == NL80211_KEY_NO_TX)
 506                 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
 507
 508         mutex_lock(&local->sta_mtx);
 509
 510         if (mac_addr) {
 511                 sta = sta_info_get_bss(sdata, mac_addr);
 512                 /*
 513                  * The ASSOC test makes sure the driver is ready to
 514                  * receive the key. When wpa_supplicant has roamed
 515                  * using FT, it attempts to set the key before
 516                  * association has completed, this rejects that attempt
 517                  * so it will set the key again after association.
 518                  *
 519                  * TODO: accept the key if we have a station entry and
 520                  *       add it to the device after the station.
 521                  */
 522                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 523                         ieee80211_key_free_unused(key);
 524                         err = -ENOENT;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         switch (sdata->vif.type) {
 530         case NL80211_IFTYPE_STATION:
 531                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 532                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 533                 break;
 534         case NL80211_IFTYPE_AP:
 535         case NL80211_IFTYPE_AP_VLAN:
 536                 /* Keys without a station are used for TX only */
 537                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 538                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 539                 break;
 540         case NL80211_IFTYPE_ADHOC:
 541                 /* no MFP (yet) */
 542                 break;
 543         case NL80211_IFTYPE_MESH_POINT:
 544 #ifdef CONFIG_MAC80211_MESH
 545                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 546                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 547                 break;
 548 #endif
 549         case NL80211_IFTYPE_WDS:
 550         case NL80211_IFTYPE_MONITOR:
 551         case NL80211_IFTYPE_P2P_DEVICE:
 552         case NL80211_IFTYPE_NAN:
 553         case NL80211_IFTYPE_UNSPECIFIED:
 554         case NUM_NL80211_IFTYPES:
 555         case NL80211_IFTYPE_P2P_CLIENT:
 556         case NL80211_IFTYPE_P2P_GO:
 557         case NL80211_IFTYPE_OCB:
 558                 /* shouldn't happen */
 559                 WARN_ON_ONCE(1);
 560                 break;
 561         }
 562
 563         err = ieee80211_key_link(key, link, sta);
 564
 565  out_unlock:
 566         mutex_unlock(&local->sta_mtx);
 567
 568         return err;
 569 }
 570
 571 static struct ieee80211_key *
 572 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
 573                      u8 key_idx, bool pairwise, const u8 *mac_addr)
 574 {
 575         struct ieee80211_local *local = sdata->local;
 576         struct ieee80211_link_data *link = &sdata->deflink;
 577         struct ieee80211_key *key;
 578
 579         if (link_id >= 0) {
 580                 link = rcu_dereference_check(sdata->link[link_id],
 581                                              lockdep_is_held(&sdata->wdev.mtx));
 582                 if (!link)
 583                         return NULL;
 584         }
 585
 586         if (mac_addr) {
 587                 struct sta_info *sta;
 588                 struct link_sta_info *link_sta;
 589
 590                 sta = sta_info_get_bss(sdata, mac_addr);
 591                 if (!sta)
 592                         return NULL;
 593
 594                 if (link_id >= 0) {
 595                         link_sta = rcu_dereference_check(sta->link[link_id],
 596                                                          lockdep_is_held(&local->sta_mtx));
 597                         if (!link_sta)
 598                                 return NULL;
 599                 } else {
 600                         link_sta = &sta->deflink;
 601                 }
 602
 603                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 604                         return rcu_dereference_check_key_mtx(local,
 605                                                              sta->ptk[key_idx]);
 606
 607                 if (!pairwise &&
 608                     key_idx < NUM_DEFAULT_KEYS +
 609                               NUM_DEFAULT_MGMT_KEYS +
 610                               NUM_DEFAULT_BEACON_KEYS)
 611                         return rcu_dereference_check_key_mtx(local,
 612                                                              link_sta->gtk[key_idx]);
 613
 614                 return NULL;
 615         }
 616
 617         if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 618                 return rcu_dereference_check_key_mtx(local,
 619                                                      sdata->keys[key_idx]);
 620
 621         key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
 622         if (key)
 623                 return key;
 624
 625         /* or maybe it was a WEP key */
 626         if (key_idx < NUM_DEFAULT_KEYS)
 627                 return rcu_dereference_check_key_mtx(local, sdata->keys[key_idx]);
 628
 629         return NULL;
 630 }
 631
 632 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 633                              int link_id, u8 key_idx, bool pairwise,
 634                              const u8 *mac_addr)
 635 {
 636         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 637         struct ieee80211_local *local = sdata->local;
 638         struct ieee80211_key *key;
 639         int ret;
 640
 641         mutex_lock(&local->sta_mtx);
 642         mutex_lock(&local->key_mtx);
 643
 644         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 645         if (!key) {
 646                 ret = -ENOENT;
 647                 goto out_unlock;
 648         }
 649
 650         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 651
 652         ret = 0;
 653  out_unlock:
 654         mutex_unlock(&local->key_mtx);
 655         mutex_unlock(&local->sta_mtx);
 656
 657         return ret;
 658 }
 659
 660 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 661                              int link_id, u8 key_idx, bool pairwise,
 662                              const u8 *mac_addr, void *cookie,
 663                              void (*callback)(void *cookie,
 664                                               struct key_params *params))
 665 {
 666         struct ieee80211_sub_if_data *sdata;
 667         u8 seq[6] = {0};
 668         struct key_params params;
 669         struct ieee80211_key *key;
 670         u64 pn64;
 671         u32 iv32;
 672         u16 iv16;
 673         int err = -ENOENT;
 674         struct ieee80211_key_seq kseq = {};
 675
 676         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 677
 678         rcu_read_lock();
 679
 680         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 681         if (!key)
 682                 goto out;
 683
 684         memset(&params, 0, sizeof(params));
 685
 686         params.cipher = key->conf.cipher;
 687
 688         switch (key->conf.cipher) {
 689         case WLAN_CIPHER_SUITE_TKIP:
 690                 pn64 = atomic64_read(&key->conf.tx_pn);
 691                 iv32 = TKIP_PN_TO_IV32(pn64);
 692                 iv16 = TKIP_PN_TO_IV16(pn64);
 693
 694                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 695                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 696                         drv_get_key_seq(sdata->local, key, &kseq);
 697                         iv32 = kseq.tkip.iv32;
 698                         iv16 = kseq.tkip.iv16;
 699                 }
 700
 701                 seq[0] = iv16 & 0xff;
 702                 seq[1] = (iv16 >> 8) & 0xff;
 703                 seq[2] = iv32 & 0xff;
 704                 seq[3] = (iv32 >> 8) & 0xff;
 705                 seq[4] = (iv32 >> 16) & 0xff;
 706                 seq[5] = (iv32 >> 24) & 0xff;
 707                 params.seq = seq;
 708                 params.seq_len = 6;
 709                 break;
 710         case WLAN_CIPHER_SUITE_CCMP:
 711         case WLAN_CIPHER_SUITE_CCMP_256:
 712         case WLAN_CIPHER_SUITE_AES_CMAC:
 713         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 714                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 715                              offsetof(typeof(kseq), aes_cmac));
 716                 fallthrough;
 717         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 718         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 719                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 720                              offsetof(typeof(kseq), aes_gmac));
 721                 fallthrough;
 722         case WLAN_CIPHER_SUITE_GCMP:
 723         case WLAN_CIPHER_SUITE_GCMP_256:
 724                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 725                              offsetof(typeof(kseq), gcmp));
 726
 727                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 728                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 729                         drv_get_key_seq(sdata->local, key, &kseq);
 730                         memcpy(seq, kseq.ccmp.pn, 6);
 731                 } else {
 732                         pn64 = atomic64_read(&key->conf.tx_pn);
 733                         seq[0] = pn64;
 734                         seq[1] = pn64 >> 8;
 735                         seq[2] = pn64 >> 16;
 736                         seq[3] = pn64 >> 24;
 737                         seq[4] = pn64 >> 32;
 738                         seq[5] = pn64 >> 40;
 739                 }
 740                 params.seq = seq;
 741                 params.seq_len = 6;
 742                 break;
 743         default:
 744                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 745                         break;
 746                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 747                         break;
 748                 drv_get_key_seq(sdata->local, key, &kseq);
 749                 params.seq = kseq.hw.seq;
 750                 params.seq_len = kseq.hw.seq_len;
 751                 break;
 752         }
 753
 754         params.key = key->conf.key;
 755         params.key_len = key->conf.keylen;
 756
 757         callback(cookie, &params);
 758         err = 0;
 759
 760  out:
 761         rcu_read_unlock();
 762         return err;
 763 }
 764
 765 static int ieee80211_config_default_key(struct wiphy *wiphy,
 766                                         struct net_device *dev,
 767                                         int link_id, u8 key_idx, bool uni,
 768                                         bool multi)
 769 {
 770         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 771         struct ieee80211_link_data *link =
 772                 ieee80211_link_or_deflink(sdata, link_id, false);
 773
 774         if (IS_ERR(link))
 775                 return PTR_ERR(link);
 776
 777         ieee80211_set_default_key(link, key_idx, uni, multi);
 778
 779         return 0;
 780 }
 781
 782 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 783                                              struct net_device *dev,
 784                                              int link_id, u8 key_idx)
 785 {
 786         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 787         struct ieee80211_link_data *link =
 788                 ieee80211_link_or_deflink(sdata, link_id, true);
 789
 790         if (IS_ERR(link))
 791                 return PTR_ERR(link);
 792
 793         ieee80211_set_default_mgmt_key(link, key_idx);
 794
 795         return 0;
 796 }
 797
 798 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
 799                                                struct net_device *dev,
 800                                                int link_id, u8 key_idx)
 801 {
 802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 803         struct ieee80211_link_data *link =
 804                 ieee80211_link_or_deflink(sdata, link_id, true);
 805
 806         if (IS_ERR(link))
 807                 return PTR_ERR(link);
 808
 809         ieee80211_set_default_beacon_key(link, key_idx);
 810
 811         return 0;
 812 }
 813
 814 void sta_set_rate_info_tx(struct sta_info *sta,
 815                           const struct ieee80211_tx_rate *rate,
 816                           struct rate_info *rinfo)
 817 {
 818         rinfo->flags = 0;
 819         if (rate->flags & IEEE80211_TX_RC_MCS) {
 820                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 821                 rinfo->mcs = rate->idx;
 822         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 823                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 824                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 825                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 826         } else {
 827                 struct ieee80211_supported_band *sband;
 828                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 829                 u16 brate;
 830
 831                 sband = ieee80211_get_sband(sta->sdata);
 832                 WARN_ON_ONCE(sband && !sband->bitrates);
 833                 if (sband && sband->bitrates) {
 834                         brate = sband->bitrates[rate->idx].bitrate;
 835                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 836                 }
 837         }
 838         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 839                 rinfo->bw = RATE_INFO_BW_40;
 840         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 841                 rinfo->bw = RATE_INFO_BW_80;
 842         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 843                 rinfo->bw = RATE_INFO_BW_160;
 844         else
 845                 rinfo->bw = RATE_INFO_BW_20;
 846         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 847                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 848 }
 849
 850 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 851                                   int idx, u8 *mac, struct station_info *sinfo)
 852 {
 853         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 854         struct ieee80211_local *local = sdata->local;
 855         struct sta_info *sta;
 856         int ret = -ENOENT;
 857
 858         mutex_lock(&local->sta_mtx);
 859
 860         sta = sta_info_get_by_idx(sdata, idx);
 861         if (sta) {
 862                 ret = 0;
 863                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 864                 sta_set_sinfo(sta, sinfo, true);
 865         }
 866
 867         mutex_unlock(&local->sta_mtx);
 868
 869         return ret;
 870 }
 871
 872 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 873                                  int idx, struct survey_info *survey)
 874 {
 875         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 876
 877         return drv_get_survey(local, idx, survey);
 878 }
 879
 880 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 881                                  const u8 *mac, struct station_info *sinfo)
 882 {
 883         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 884         struct ieee80211_local *local = sdata->local;
 885         struct sta_info *sta;
 886         int ret = -ENOENT;
 887
 888         mutex_lock(&local->sta_mtx);
 889
 890         sta = sta_info_get_bss(sdata, mac);
 891         if (sta) {
 892                 ret = 0;
 893                 sta_set_sinfo(sta, sinfo, true);
 894         }
 895
 896         mutex_unlock(&local->sta_mtx);
 897
 898         return ret;
 899 }
 900
 901 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 902                                          struct cfg80211_chan_def *chandef)
 903 {
 904         struct ieee80211_local *local = wiphy_priv(wiphy);
 905         struct ieee80211_sub_if_data *sdata;
 906         int ret = 0;
 907
 908         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 909                 return 0;
 910
 911         mutex_lock(&local->mtx);
 912         if (local->use_chanctx) {
 913                 sdata = wiphy_dereference(local->hw.wiphy,
 914                                           local->monitor_sdata);
 915                 if (sdata) {
 916                         ieee80211_link_release_channel(&sdata->deflink);
 917                         ret = ieee80211_link_use_channel(&sdata->deflink,
 918                                                          chandef,
 919                                                          IEEE80211_CHANCTX_EXCLUSIVE);
 920                 }
 921         } else if (local->open_count == local->monitors) {
 922                 local->_oper_chandef = *chandef;
 923                 ieee80211_hw_config(local, 0);
 924         }
 925
 926         if (ret == 0)
 927                 local->monitor_chandef = *chandef;
 928         mutex_unlock(&local->mtx);
 929
 930         return ret;
 931 }
 932
 933 static int
 934 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 935                          const u8 *resp, size_t resp_len,
 936                          const struct ieee80211_csa_settings *csa,
 937                          const struct ieee80211_color_change_settings *cca,
 938                          struct ieee80211_link_data *link)
 939 {
 940         struct probe_resp *new, *old;
 941
 942         if (!resp || !resp_len)
 943                 return 1;
 944
 945         old = sdata_dereference(link->u.ap.probe_resp, sdata);
 946
 947         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 948         if (!new)
 949                 return -ENOMEM;
 950
 951         new->len = resp_len;
 952         memcpy(new->data, resp, resp_len);
 953
 954         if (csa)
 955                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
 956                        csa->n_counter_offsets_presp *
 957                        sizeof(new->cntdwn_counter_offsets[0]));
 958         else if (cca)
 959                 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
 960
 961         rcu_assign_pointer(link->u.ap.probe_resp, new);
 962         if (old)
 963                 kfree_rcu(old, rcu_head);
 964
 965         return 0;
 966 }
 967
 968 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
 969                                         struct cfg80211_fils_discovery *params,
 970                                         struct ieee80211_link_data *link,
 971                                         struct ieee80211_bss_conf *link_conf)
 972 {
 973         struct fils_discovery_data *new, *old = NULL;
 974         struct ieee80211_fils_discovery *fd;
 975
 976         if (!params->tmpl || !params->tmpl_len)
 977                 return -EINVAL;
 978
 979         fd = &link_conf->fils_discovery;
 980         fd->min_interval = params->min_interval;
 981         fd->max_interval = params->max_interval;
 982
 983         old = sdata_dereference(link->u.ap.fils_discovery, sdata);
 984         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
 985         if (!new)
 986                 return -ENOMEM;
 987         new->len = params->tmpl_len;
 988         memcpy(new->data, params->tmpl, params->tmpl_len);
 989         rcu_assign_pointer(link->u.ap.fils_discovery, new);
 990
 991         if (old)
 992                 kfree_rcu(old, rcu_head);
 993
 994         return 0;
 995 }
 996
 997 static int
 998 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
 999                                      struct cfg80211_unsol_bcast_probe_resp *params,
1000                                      struct ieee80211_link_data *link,
1001                                      struct ieee80211_bss_conf *link_conf)
1002 {
1003         struct unsol_bcast_probe_resp_data *new, *old = NULL;
1004
1005         if (!params->tmpl || !params->tmpl_len)
1006                 return -EINVAL;
1007
1008         old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1009         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1010         if (!new)
1011                 return -ENOMEM;
1012         new->len = params->tmpl_len;
1013         memcpy(new->data, params->tmpl, params->tmpl_len);
1014         rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1015
1016         if (old)
1017                 kfree_rcu(old, rcu_head);
1018
1019         link_conf->unsol_bcast_probe_resp_interval = params->interval;
1020
1021         return 0;
1022 }
1023
1024 static int ieee80211_set_ftm_responder_params(
1025                                 struct ieee80211_sub_if_data *sdata,
1026                                 const u8 *lci, size_t lci_len,
1027                                 const u8 *civicloc, size_t civicloc_len,
1028                                 struct ieee80211_bss_conf *link_conf)
1029 {
1030         struct ieee80211_ftm_responder_params *new, *old;
1031         u8 *pos;
1032         int len;
1033
1034         if (!lci_len && !civicloc_len)
1035                 return 0;
1036
1037         old = link_conf->ftmr_params;
1038         len = lci_len + civicloc_len;
1039
1040         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1041         if (!new)
1042                 return -ENOMEM;
1043
1044         pos = (u8 *)(new + 1);
1045         if (lci_len) {
1046                 new->lci_len = lci_len;
1047                 new->lci = pos;
1048                 memcpy(pos, lci, lci_len);
1049                 pos += lci_len;
1050         }
1051
1052         if (civicloc_len) {
1053                 new->civicloc_len = civicloc_len;
1054                 new->civicloc = pos;
1055                 memcpy(pos, civicloc, civicloc_len);
1056                 pos += civicloc_len;
1057         }
1058
1059         link_conf->ftmr_params = new;
1060         kfree(old);
1061
1062         return 0;
1063 }
1064
1065 static int
1066 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1067                              struct cfg80211_mbssid_elems *src)
1068 {
1069         int i, offset = 0;
1070
1071         for (i = 0; i < src->cnt; i++) {
1072                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1073                 dst->elem[i].len = src->elem[i].len;
1074                 dst->elem[i].data = pos + offset;
1075                 offset += dst->elem[i].len;
1076         }
1077         dst->cnt = src->cnt;
1078
1079         return offset;
1080 }
1081
1082 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1083                                    struct ieee80211_link_data *link,
1084                                    struct cfg80211_beacon_data *params,
1085                                    const struct ieee80211_csa_settings *csa,
1086                                    const struct ieee80211_color_change_settings *cca)
1087 {
1088         struct cfg80211_mbssid_elems *mbssid = NULL;
1089         struct beacon_data *new, *old;
1090         int new_head_len, new_tail_len;
1091         int size, err;
1092         u32 changed = BSS_CHANGED_BEACON;
1093         struct ieee80211_bss_conf *link_conf = link->conf;
1094
1095         old = sdata_dereference(link->u.ap.beacon, sdata);
1096
1097         /* Need to have a beacon head if we don't have one yet */
1098         if (!params->head && !old)
1099                 return -EINVAL;
1100
1101         /* new or old head? */
1102         if (params->head)
1103                 new_head_len = params->head_len;
1104         else
1105                 new_head_len = old->head_len;
1106
1107         /* new or old tail? */
1108         if (params->tail || !old)
1109                 /* params->tail_len will be zero for !params->tail */
1110                 new_tail_len = params->tail_len;
1111         else
1112                 new_tail_len = old->tail_len;
1113
1114         size = sizeof(*new) + new_head_len + new_tail_len;
1115
1116         /* new or old multiple BSSID elements? */
1117         if (params->mbssid_ies) {
1118                 mbssid = params->mbssid_ies;
1119                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1120                 size += ieee80211_get_mbssid_beacon_len(mbssid);
1121         } else if (old && old->mbssid_ies) {
1122                 mbssid = old->mbssid_ies;
1123                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1124                 size += ieee80211_get_mbssid_beacon_len(mbssid);
1125         }
1126
1127         new = kzalloc(size, GFP_KERNEL);
1128         if (!new)
1129                 return -ENOMEM;
1130
1131         /* start filling the new info now */
1132
1133         /*
1134          * pointers go into the block we allocated,
1135          * memory is | beacon_data | head | tail | mbssid_ies
1136          */
1137         new->head = ((u8 *) new) + sizeof(*new);
1138         new->tail = new->head + new_head_len;
1139         new->head_len = new_head_len;
1140         new->tail_len = new_tail_len;
1141         /* copy in optional mbssid_ies */
1142         if (mbssid) {
1143                 u8 *pos = new->tail + new->tail_len;
1144
1145                 new->mbssid_ies = (void *)pos;
1146                 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1147                 ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid);
1148                 /* update bssid_indicator */
1149                 link_conf->bssid_indicator =
1150                         ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1151         }
1152
1153         if (csa) {
1154                 new->cntdwn_current_counter = csa->count;
1155                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1156                        csa->n_counter_offsets_beacon *
1157                        sizeof(new->cntdwn_counter_offsets[0]));
1158         } else if (cca) {
1159                 new->cntdwn_current_counter = cca->count;
1160                 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1161         }
1162
1163         /* copy in head */
1164         if (params->head)
1165                 memcpy(new->head, params->head, new_head_len);
1166         else
1167                 memcpy(new->head, old->head, new_head_len);
1168
1169         /* copy in optional tail */
1170         if (params->tail)
1171                 memcpy(new->tail, params->tail, new_tail_len);
1172         else
1173                 if (old)
1174                         memcpy(new->tail, old->tail, new_tail_len);
1175
1176         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1177                                        params->probe_resp_len, csa, cca, link);
1178         if (err < 0) {
1179                 kfree(new);
1180                 return err;
1181         }
1182         if (err == 0)
1183                 changed |= BSS_CHANGED_AP_PROBE_RESP;
1184
1185         if (params->ftm_responder != -1) {
1186                 link_conf->ftm_responder = params->ftm_responder;
1187                 err = ieee80211_set_ftm_responder_params(sdata,
1188                                                          params->lci,
1189                                                          params->lci_len,
1190                                                          params->civicloc,
1191                                                          params->civicloc_len,
1192                                                          link_conf);
1193
1194                 if (err < 0) {
1195                         kfree(new);
1196                         return err;
1197                 }
1198
1199                 changed |= BSS_CHANGED_FTM_RESPONDER;
1200         }
1201
1202         rcu_assign_pointer(link->u.ap.beacon, new);
1203         sdata->u.ap.active = true;
1204
1205         if (old)
1206                 kfree_rcu(old, rcu_head);
1207
1208         return changed;
1209 }
1210
1211 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1212                               struct cfg80211_ap_settings *params)
1213 {
1214         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1215         struct ieee80211_local *local = sdata->local;
1216         struct beacon_data *old;
1217         struct ieee80211_sub_if_data *vlan;
1218         u32 changed = BSS_CHANGED_BEACON_INT |
1219                       BSS_CHANGED_BEACON_ENABLED |
1220                       BSS_CHANGED_BEACON |
1221                       BSS_CHANGED_P2P_PS |
1222                       BSS_CHANGED_TXPOWER |
1223                       BSS_CHANGED_TWT;
1224         int i, err;
1225         int prev_beacon_int;
1226         unsigned int link_id = params->beacon.link_id;
1227         struct ieee80211_link_data *link;
1228         struct ieee80211_bss_conf *link_conf;
1229
1230         link = sdata_dereference(sdata->link[link_id], sdata);
1231         if (!link)
1232                 return -ENOLINK;
1233
1234         link_conf = link->conf;
1235
1236         old = sdata_dereference(link->u.ap.beacon, sdata);
1237         if (old)
1238                 return -EALREADY;
1239
1240         if (params->smps_mode != NL80211_SMPS_OFF)
1241                 return -ENOTSUPP;
1242
1243         link->smps_mode = IEEE80211_SMPS_OFF;
1244
1245         link->needed_rx_chains = sdata->local->rx_chains;
1246
1247         prev_beacon_int = link_conf->beacon_int;
1248         link_conf->beacon_int = params->beacon_interval;
1249
1250         if (params->he_cap && params->he_oper) {
1251                 link_conf->he_support = true;
1252                 link_conf->htc_trig_based_pkt_ext =
1253                         le32_get_bits(params->he_oper->he_oper_params,
1254                               IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1255                 link_conf->frame_time_rts_th =
1256                         le32_get_bits(params->he_oper->he_oper_params,
1257                               IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1258                 changed |= BSS_CHANGED_HE_OBSS_PD;
1259
1260                 if (params->beacon.he_bss_color.enabled)
1261                         changed |= BSS_CHANGED_HE_BSS_COLOR;
1262         }
1263
1264         if (sdata->vif.type == NL80211_IFTYPE_AP &&
1265             params->mbssid_config.tx_wdev) {
1266                 err = ieee80211_set_ap_mbssid_options(sdata,
1267                                                       params->mbssid_config,
1268                                                       link_conf);
1269                 if (err)
1270                         return err;
1271         }
1272
1273         mutex_lock(&local->mtx);
1274         err = ieee80211_link_use_channel(link, &params->chandef,
1275                                          IEEE80211_CHANCTX_SHARED);
1276         if (!err)
1277                 ieee80211_link_copy_chanctx_to_vlans(link, false);
1278         mutex_unlock(&local->mtx);
1279         if (err) {
1280                 link_conf->beacon_int = prev_beacon_int;
1281                 return err;
1282         }
1283
1284         /*
1285          * Apply control port protocol, this allows us to
1286          * not encrypt dynamic WEP control frames.
1287          */
1288         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1289         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1290         sdata->control_port_over_nl80211 =
1291                                 params->crypto.control_port_over_nl80211;
1292         sdata->control_port_no_preauth =
1293                                 params->crypto.control_port_no_preauth;
1294
1295         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1296                 vlan->control_port_protocol =
1297                         params->crypto.control_port_ethertype;
1298                 vlan->control_port_no_encrypt =
1299                         params->crypto.control_port_no_encrypt;
1300                 vlan->control_port_over_nl80211 =
1301                         params->crypto.control_port_over_nl80211;
1302                 vlan->control_port_no_preauth =
1303                         params->crypto.control_port_no_preauth;
1304         }
1305
1306         link_conf->dtim_period = params->dtim_period;
1307         link_conf->enable_beacon = true;
1308         link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1309         link_conf->twt_responder = params->twt_responder;
1310         link_conf->he_obss_pd = params->he_obss_pd;
1311         link_conf->he_bss_color = params->beacon.he_bss_color;
1312         sdata->vif.cfg.s1g = params->chandef.chan->band ==
1313                                   NL80211_BAND_S1GHZ;
1314
1315         sdata->vif.cfg.ssid_len = params->ssid_len;
1316         if (params->ssid_len)
1317                 memcpy(sdata->vif.cfg.ssid, params->ssid,
1318                        params->ssid_len);
1319         link_conf->hidden_ssid =
1320                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1321
1322         memset(&link_conf->p2p_noa_attr, 0,
1323                sizeof(link_conf->p2p_noa_attr));
1324         link_conf->p2p_noa_attr.oppps_ctwindow =
1325                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1326         if (params->p2p_opp_ps)
1327                 link_conf->p2p_noa_attr.oppps_ctwindow |=
1328                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1329
1330         sdata->beacon_rate_set = false;
1331         if (wiphy_ext_feature_isset(local->hw.wiphy,
1332                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1333                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1334                         sdata->beacon_rateidx_mask[i] =
1335                                 params->beacon_rate.control[i].legacy;
1336                         if (sdata->beacon_rateidx_mask[i])
1337                                 sdata->beacon_rate_set = true;
1338                 }
1339         }
1340
1341         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1342                 link_conf->beacon_tx_rate = params->beacon_rate;
1343
1344         err = ieee80211_assign_beacon(sdata, link, &params->beacon, NULL, NULL);
1345         if (err < 0)
1346                 goto error;
1347         changed |= err;
1348
1349         if (params->fils_discovery.max_interval) {
1350                 err = ieee80211_set_fils_discovery(sdata,
1351                                                    &params->fils_discovery,
1352                                                    link, link_conf);
1353                 if (err < 0)
1354                         goto error;
1355                 changed |= BSS_CHANGED_FILS_DISCOVERY;
1356         }
1357
1358         if (params->unsol_bcast_probe_resp.interval) {
1359                 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1360                                                            &params->unsol_bcast_probe_resp,
1361                                                            link, link_conf);
1362                 if (err < 0)
1363                         goto error;
1364                 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1365         }
1366
1367         err = drv_start_ap(sdata->local, sdata, link_conf);
1368         if (err) {
1369                 old = sdata_dereference(link->u.ap.beacon, sdata);
1370
1371                 if (old)
1372                         kfree_rcu(old, rcu_head);
1373                 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1374                 sdata->u.ap.active = false;
1375                 goto error;
1376         }
1377
1378         ieee80211_recalc_dtim(local, sdata);
1379         ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1380         ieee80211_link_info_change_notify(sdata, link, changed);
1381
1382         netif_carrier_on(dev);
1383         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1384                 netif_carrier_on(vlan->dev);
1385
1386         return 0;
1387
1388 error:
1389         mutex_lock(&local->mtx);
1390         ieee80211_link_release_channel(link);
1391         mutex_unlock(&local->mtx);
1392
1393         return err;
1394 }
1395
1396 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1397                                    struct cfg80211_beacon_data *params)
1398 {
1399         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1400         struct ieee80211_link_data *link;
1401         struct beacon_data *old;
1402         int err;
1403         struct ieee80211_bss_conf *link_conf;
1404
1405         sdata_assert_lock(sdata);
1406
1407         link = sdata_dereference(sdata->link[params->link_id], sdata);
1408         if (!link)
1409                 return -ENOLINK;
1410
1411         link_conf = link->conf;
1412
1413         /* don't allow changing the beacon while a countdown is in place - offset
1414          * of channel switch counter may change
1415          */
1416         if (link_conf->csa_active || link_conf->color_change_active)
1417                 return -EBUSY;
1418
1419         old = sdata_dereference(link->u.ap.beacon, sdata);
1420         if (!old)
1421                 return -ENOENT;
1422
1423         err = ieee80211_assign_beacon(sdata, link, params, NULL, NULL);
1424         if (err < 0)
1425                 return err;
1426
1427         if (params->he_bss_color_valid &&
1428             params->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1429                 link_conf->he_bss_color.enabled = params->he_bss_color.enabled;
1430                 err |= BSS_CHANGED_HE_BSS_COLOR;
1431         }
1432
1433         ieee80211_link_info_change_notify(sdata, link, err);
1434         return 0;
1435 }
1436
1437 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1438 {
1439         if (!link->u.ap.next_beacon)
1440                 return;
1441
1442         kfree(link->u.ap.next_beacon->mbssid_ies);
1443         kfree(link->u.ap.next_beacon);
1444         link->u.ap.next_beacon = NULL;
1445 }
1446
1447 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1448                              unsigned int link_id)
1449 {
1450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451         struct ieee80211_sub_if_data *vlan;
1452         struct ieee80211_local *local = sdata->local;
1453         struct beacon_data *old_beacon;
1454         struct probe_resp *old_probe_resp;
1455         struct fils_discovery_data *old_fils_discovery;
1456         struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1457         struct cfg80211_chan_def chandef;
1458         struct ieee80211_link_data *link =
1459                 sdata_dereference(sdata->link[link_id], sdata);
1460         struct ieee80211_bss_conf *link_conf = link->conf;
1461
1462         sdata_assert_lock(sdata);
1463
1464         old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1465         if (!old_beacon)
1466                 return -ENOENT;
1467         old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1468                                            sdata);
1469         old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1470                                                sdata);
1471         old_unsol_bcast_probe_resp =
1472                 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1473                                   sdata);
1474
1475         /* abort any running channel switch */
1476         mutex_lock(&local->mtx);
1477         link_conf->csa_active = false;
1478         if (link->csa_block_tx) {
1479                 ieee80211_wake_vif_queues(local, sdata,
1480                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1481                 link->csa_block_tx = false;
1482         }
1483
1484         mutex_unlock(&local->mtx);
1485
1486         ieee80211_free_next_beacon(link);
1487
1488         /* turn off carrier for this interface and dependent VLANs */
1489         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1490                 netif_carrier_off(vlan->dev);
1491         netif_carrier_off(dev);
1492
1493         /* remove beacon and probe response */
1494         sdata->u.ap.active = false;
1495         RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1496         RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1497         RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1498         RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1499         kfree_rcu(old_beacon, rcu_head);
1500         if (old_probe_resp)
1501                 kfree_rcu(old_probe_resp, rcu_head);
1502         if (old_fils_discovery)
1503                 kfree_rcu(old_fils_discovery, rcu_head);
1504         if (old_unsol_bcast_probe_resp)
1505                 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1506
1507         kfree(link_conf->ftmr_params);
1508         link_conf->ftmr_params = NULL;
1509
1510         __sta_info_flush(sdata, true);
1511         ieee80211_free_keys(sdata, true);
1512
1513         link_conf->enable_beacon = false;
1514         sdata->beacon_rate_set = false;
1515         sdata->vif.cfg.ssid_len = 0;
1516         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1517         ieee80211_link_info_change_notify(sdata, link,
1518                                           BSS_CHANGED_BEACON_ENABLED);
1519
1520         if (sdata->wdev.cac_started) {
1521                 chandef = link_conf->chandef;
1522                 cancel_delayed_work_sync(&link->dfs_cac_timer_work);
1523                 cfg80211_cac_event(sdata->dev, &chandef,
1524                                    NL80211_RADAR_CAC_ABORTED,
1525                                    GFP_KERNEL);
1526         }
1527
1528         drv_stop_ap(sdata->local, sdata, link_conf);
1529
1530         /* free all potentially still buffered bcast frames */
1531         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1532         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1533
1534         mutex_lock(&local->mtx);
1535         ieee80211_link_copy_chanctx_to_vlans(link, true);
1536         ieee80211_link_release_channel(link);
1537         mutex_unlock(&local->mtx);
1538
1539         return 0;
1540 }
1541
1542 static int sta_apply_auth_flags(struct ieee80211_local *local,
1543                                 struct sta_info *sta,
1544                                 u32 mask, u32 set)
1545 {
1546         int ret;
1547
1548         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1549             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1550             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1551                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1552                 if (ret)
1553                         return ret;
1554         }
1555
1556         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1557             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1558             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1559                 /*
1560                  * When peer becomes associated, init rate control as
1561                  * well. Some drivers require rate control initialized
1562                  * before drv_sta_state() is called.
1563                  */
1564                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1565                         rate_control_rate_init(sta);
1566
1567                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1568                 if (ret)
1569                         return ret;
1570         }
1571
1572         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1573                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1574                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1575                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1576                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1577                 else
1578                         ret = 0;
1579                 if (ret)
1580                         return ret;
1581         }
1582
1583         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1584             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1585             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1586                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1587                 if (ret)
1588                         return ret;
1589         }
1590
1591         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1592             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1593             test_sta_flag(sta, WLAN_STA_AUTH)) {
1594                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1595                 if (ret)
1596                         return ret;
1597         }
1598
1599         return 0;
1600 }
1601
1602 static void sta_apply_mesh_params(struct ieee80211_local *local,
1603                                   struct sta_info *sta,
1604                                   struct station_parameters *params)
1605 {
1606 #ifdef CONFIG_MAC80211_MESH
1607         struct ieee80211_sub_if_data *sdata = sta->sdata;
1608         u32 changed = 0;
1609
1610         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1611                 switch (params->plink_state) {
1612                 case NL80211_PLINK_ESTAB:
1613                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1614                                 changed = mesh_plink_inc_estab_count(sdata);
1615                         sta->mesh->plink_state = params->plink_state;
1616                         sta->mesh->aid = params->peer_aid;
1617
1618                         ieee80211_mps_sta_status_update(sta);
1619                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1620                                       sdata->u.mesh.mshcfg.power_mode);
1621
1622                         ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1623                         /* init at low value */
1624                         ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1625
1626                         break;
1627                 case NL80211_PLINK_LISTEN:
1628                 case NL80211_PLINK_BLOCKED:
1629                 case NL80211_PLINK_OPN_SNT:
1630                 case NL80211_PLINK_OPN_RCVD:
1631                 case NL80211_PLINK_CNF_RCVD:
1632                 case NL80211_PLINK_HOLDING:
1633                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1634                                 changed = mesh_plink_dec_estab_count(sdata);
1635                         sta->mesh->plink_state = params->plink_state;
1636
1637                         ieee80211_mps_sta_status_update(sta);
1638                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1639                                         NL80211_MESH_POWER_UNKNOWN);
1640                         break;
1641                 default:
1642                         /*  nothing  */
1643                         break;
1644                 }
1645         }
1646
1647         switch (params->plink_action) {
1648         case NL80211_PLINK_ACTION_NO_ACTION:
1649                 /* nothing */
1650                 break;
1651         case NL80211_PLINK_ACTION_OPEN:
1652                 changed |= mesh_plink_open(sta);
1653                 break;
1654         case NL80211_PLINK_ACTION_BLOCK:
1655                 changed |= mesh_plink_block(sta);
1656                 break;
1657         }
1658
1659         if (params->local_pm)
1660                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1661                                                           params->local_pm);
1662
1663         ieee80211_mbss_info_change_notify(sdata, changed);
1664 #endif
1665 }
1666
1667 static int sta_link_apply_parameters(struct ieee80211_local *local,
1668                                      struct sta_info *sta, bool new_link,
1669                                      struct link_station_parameters *params)
1670 {
1671         int ret = 0;
1672         struct ieee80211_supported_band *sband;
1673         struct ieee80211_sub_if_data *sdata = sta->sdata;
1674         u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1675         struct ieee80211_link_data *link =
1676                 sdata_dereference(sdata->link[link_id], sdata);
1677         struct link_sta_info *link_sta =
1678                 rcu_dereference_protected(sta->link[link_id],
1679                                           lockdep_is_held(&local->sta_mtx));
1680
1681         /*
1682          * If there are no changes, then accept a link that doesn't exist,
1683          * unless it's a new link.
1684          */
1685         if (params->link_id < 0 && !new_link &&
1686             !params->link_mac && !params->txpwr_set &&
1687             !params->supported_rates_len &&
1688             !params->ht_capa && !params->vht_capa &&
1689             !params->he_capa && !params->eht_capa &&
1690             !params->opmode_notif_used)
1691                 return 0;
1692
1693         if (!link || !link_sta)
1694                 return -EINVAL;
1695
1696         sband = ieee80211_get_link_sband(link);
1697         if (!sband)
1698                 return -EINVAL;
1699
1700         if (params->link_mac) {
1701                 if (new_link) {
1702                         memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1703                         memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1704                 } else if (!ether_addr_equal(link_sta->addr,
1705                                              params->link_mac)) {
1706                         return -EINVAL;
1707                 }
1708         } else if (new_link) {
1709                 return -EINVAL;
1710         }
1711
1712         if (params->txpwr_set) {
1713                 link_sta->pub->txpwr.type = params->txpwr.type;
1714                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1715                         link_sta->pub->txpwr.power = params->txpwr.power;
1716                 ret = drv_sta_set_txpwr(local, sdata, sta);
1717                 if (ret)
1718                         return ret;
1719         }
1720
1721         if (params->supported_rates &&
1722             params->supported_rates_len) {
1723                 ieee80211_parse_bitrates(link->conf->chandef.width,
1724                                          sband, params->supported_rates,
1725                                          params->supported_rates_len,
1726                                          &link_sta->pub->supp_rates[sband->band]);
1727         }
1728
1729         if (params->ht_capa)
1730                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1731                                                   params->ht_capa, link_sta);
1732
1733         /* VHT can override some HT caps such as the A-MSDU max length */
1734         if (params->vht_capa)
1735                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1736                                                     params->vht_capa, link_sta);
1737
1738         if (params->he_capa)
1739                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1740                                                   (void *)params->he_capa,
1741                                                   params->he_capa_len,
1742                                                   (void *)params->he_6ghz_capa,
1743                                                   link_sta);
1744
1745         if (params->eht_capa)
1746                 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1747                                                     (u8 *)params->he_capa,
1748                                                     params->he_capa_len,
1749                                                     params->eht_capa,
1750                                                     params->eht_capa_len,
1751                                                     link_sta);
1752
1753         if (params->opmode_notif_used) {
1754                 /* returned value is only needed for rc update, but the
1755                  * rc isn't initialized here yet, so ignore it
1756                  */
1757                 __ieee80211_vht_handle_opmode(sdata, link_sta,
1758                                               params->opmode_notif,
1759                                               sband->band);
1760         }
1761
1762         return ret;
1763 }
1764
1765 static int sta_apply_parameters(struct ieee80211_local *local,
1766                                 struct sta_info *sta,
1767                                 struct station_parameters *params)
1768 {
1769         struct ieee80211_sub_if_data *sdata = sta->sdata;
1770         u32 mask, set;
1771         int ret = 0;
1772
1773         mask = params->sta_flags_mask;
1774         set = params->sta_flags_set;
1775
1776         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1777                 /*
1778                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1779                  * API but must follow AUTHENTICATED for driver state.
1780                  */
1781                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1782                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1783                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1784                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1785         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1786                 /*
1787                  * TDLS -- everything follows authorized, but
1788                  * only becoming authorized is possible, not
1789                  * going back
1790                  */
1791                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1792                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1793                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1794                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1795                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1796                 }
1797         }
1798
1799         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1800             local->hw.queues >= IEEE80211_NUM_ACS)
1801                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1802
1803         /* auth flags will be set later for TDLS,
1804          * and for unassociated stations that move to associated */
1805         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1806             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1807               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1808                 ret = sta_apply_auth_flags(local, sta, mask, set);
1809                 if (ret)
1810                         return ret;
1811         }
1812
1813         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1814                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1815                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1816                 else
1817                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1818         }
1819
1820         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1821                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1822                 if (set & BIT(NL80211_STA_FLAG_MFP))
1823                         set_sta_flag(sta, WLAN_STA_MFP);
1824                 else
1825                         clear_sta_flag(sta, WLAN_STA_MFP);
1826         }
1827
1828         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1829                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1830                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1831                 else
1832                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1833         }
1834
1835         /* mark TDLS channel switch support, if the AP allows it */
1836         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1837             !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1838             params->ext_capab_len >= 4 &&
1839             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1840                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1841
1842         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1843             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1844             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1845             params->ext_capab_len >= 8 &&
1846             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1847                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1848
1849         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1850                 sta->sta.uapsd_queues = params->uapsd_queues;
1851                 sta->sta.max_sp = params->max_sp;
1852         }
1853
1854         ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
1855                                               params->ext_capab_len);
1856
1857         /*
1858          * cfg80211 validates this (1-2007) and allows setting the AID
1859          * only when creating a new station entry
1860          */
1861         if (params->aid)
1862                 sta->sta.aid = params->aid;
1863
1864         /*
1865          * Some of the following updates would be racy if called on an
1866          * existing station, via ieee80211_change_station(). However,
1867          * all such changes are rejected by cfg80211 except for updates
1868          * changing the supported rates on an existing but not yet used
1869          * TDLS peer.
1870          */
1871
1872         if (params->listen_interval >= 0)
1873                 sta->listen_interval = params->listen_interval;
1874
1875         ret = sta_link_apply_parameters(local, sta, false,
1876                                         &params->link_sta_params);
1877         if (ret)
1878                 return ret;
1879
1880         if (params->support_p2p_ps >= 0)
1881                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1882
1883         if (ieee80211_vif_is_mesh(&sdata->vif))
1884                 sta_apply_mesh_params(local, sta, params);
1885
1886         if (params->airtime_weight)
1887                 sta->airtime_weight = params->airtime_weight;
1888
1889         /* set the STA state after all sta info from usermode has been set */
1890         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1891             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1892                 ret = sta_apply_auth_flags(local, sta, mask, set);
1893                 if (ret)
1894                         return ret;
1895         }
1896
1897         /* Mark the STA as MLO if MLD MAC address is available */
1898         if (params->link_sta_params.mld_mac)
1899                 sta->sta.mlo = true;
1900
1901         return 0;
1902 }
1903
1904 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1905                                  const u8 *mac,
1906                                  struct station_parameters *params)
1907 {
1908         struct ieee80211_local *local = wiphy_priv(wiphy);
1909         struct sta_info *sta;
1910         struct ieee80211_sub_if_data *sdata;
1911         int err;
1912
1913         if (params->vlan) {
1914                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1915
1916                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1917                     sdata->vif.type != NL80211_IFTYPE_AP)
1918                         return -EINVAL;
1919         } else
1920                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1921
1922         if (ether_addr_equal(mac, sdata->vif.addr))
1923                 return -EINVAL;
1924
1925         if (!is_valid_ether_addr(mac))
1926                 return -EINVAL;
1927
1928         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1929             sdata->vif.type == NL80211_IFTYPE_STATION &&
1930             !sdata->u.mgd.associated)
1931                 return -EINVAL;
1932
1933         /*
1934          * If we have a link ID, it can be a non-MLO station on an AP MLD,
1935          * but we need to have a link_mac in that case as well, so use the
1936          * STA's MAC address in that case.
1937          */
1938         if (params->link_sta_params.link_id >= 0)
1939                 sta = sta_info_alloc_with_link(sdata, mac,
1940                                                params->link_sta_params.link_id,
1941                                                params->link_sta_params.link_mac ?: mac,
1942                                                GFP_KERNEL);
1943         else
1944                 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1945
1946         if (!sta)
1947                 return -ENOMEM;
1948
1949         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1950                 sta->sta.tdls = true;
1951
1952         /* Though the mutex is not needed here (since the station is not
1953          * visible yet), sta_apply_parameters (and inner functions) require
1954          * the mutex due to other paths.
1955          */
1956         mutex_lock(&local->sta_mtx);
1957         err = sta_apply_parameters(local, sta, params);
1958         mutex_unlock(&local->sta_mtx);
1959         if (err) {
1960                 sta_info_free(local, sta);
1961                 return err;
1962         }
1963
1964         /*
1965          * for TDLS and for unassociated station, rate control should be
1966          * initialized only when rates are known and station is marked
1967          * authorized/associated
1968          */
1969         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1970             test_sta_flag(sta, WLAN_STA_ASSOC))
1971                 rate_control_rate_init(sta);
1972
1973         return sta_info_insert(sta);
1974 }
1975
1976 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1977                                  struct station_del_parameters *params)
1978 {
1979         struct ieee80211_sub_if_data *sdata;
1980
1981         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982
1983         if (params->mac)
1984                 return sta_info_destroy_addr_bss(sdata, params->mac);
1985
1986         sta_info_flush(sdata);
1987         return 0;
1988 }
1989
1990 static int ieee80211_change_station(struct wiphy *wiphy,
1991                                     struct net_device *dev, const u8 *mac,
1992                                     struct station_parameters *params)
1993 {
1994         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1995         struct ieee80211_local *local = wiphy_priv(wiphy);
1996         struct sta_info *sta;
1997         struct ieee80211_sub_if_data *vlansdata;
1998         enum cfg80211_station_type statype;
1999         int err;
2000
2001         mutex_lock(&local->sta_mtx);
2002
2003         sta = sta_info_get_bss(sdata, mac);
2004         if (!sta) {
2005                 err = -ENOENT;
2006                 goto out_err;
2007         }
2008
2009         switch (sdata->vif.type) {
2010         case NL80211_IFTYPE_MESH_POINT:
2011                 if (sdata->u.mesh.user_mpm)
2012                         statype = CFG80211_STA_MESH_PEER_USER;
2013                 else
2014                         statype = CFG80211_STA_MESH_PEER_KERNEL;
2015                 break;
2016         case NL80211_IFTYPE_ADHOC:
2017                 statype = CFG80211_STA_IBSS;
2018                 break;
2019         case NL80211_IFTYPE_STATION:
2020                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2021                         statype = CFG80211_STA_AP_STA;
2022                         break;
2023                 }
2024                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2025                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2026                 else
2027                         statype = CFG80211_STA_TDLS_PEER_SETUP;
2028                 break;
2029         case NL80211_IFTYPE_AP:
2030         case NL80211_IFTYPE_AP_VLAN:
2031                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2032                         statype = CFG80211_STA_AP_CLIENT;
2033                 else
2034                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2035                 break;
2036         default:
2037                 err = -EOPNOTSUPP;
2038                 goto out_err;
2039         }
2040
2041         err = cfg80211_check_station_change(wiphy, params, statype);
2042         if (err)
2043                 goto out_err;
2044
2045         if (params->vlan && params->vlan != sta->sdata->dev) {
2046                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2047
2048                 if (params->vlan->ieee80211_ptr->use_4addr) {
2049                         if (vlansdata->u.vlan.sta) {
2050                                 err = -EBUSY;
2051                                 goto out_err;
2052                         }
2053
2054                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2055                         __ieee80211_check_fast_rx_iface(vlansdata);
2056                         drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2057                 }
2058
2059                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2060                     sta->sdata->u.vlan.sta) {
2061                         ieee80211_clear_fast_rx(sta);
2062                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2063                 }
2064
2065                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2066                         ieee80211_vif_dec_num_mcast(sta->sdata);
2067
2068                 sta->sdata = vlansdata;
2069                 ieee80211_check_fast_xmit(sta);
2070
2071                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2072                         ieee80211_vif_inc_num_mcast(sta->sdata);
2073                         cfg80211_send_layer2_update(sta->sdata->dev,
2074                                                     sta->sta.addr);
2075                 }
2076         }
2077
2078         /* we use sta_info_get_bss() so this might be different */
2079         if (sdata != sta->sdata) {
2080                 mutex_lock_nested(&sta->sdata->wdev.mtx, 1);
2081                 err = sta_apply_parameters(local, sta, params);
2082                 mutex_unlock(&sta->sdata->wdev.mtx);
2083         } else {
2084                 err = sta_apply_parameters(local, sta, params);
2085         }
2086         if (err)
2087                 goto out_err;
2088
2089         mutex_unlock(&local->sta_mtx);
2090
2091         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2092             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2093                 ieee80211_recalc_ps(local);
2094                 ieee80211_recalc_ps_vif(sdata);
2095         }
2096
2097         return 0;
2098 out_err:
2099         mutex_unlock(&local->sta_mtx);
2100         return err;
2101 }
2102
2103 #ifdef CONFIG_MAC80211_MESH
2104 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2105                                const u8 *dst, const u8 *next_hop)
2106 {
2107         struct ieee80211_sub_if_data *sdata;
2108         struct mesh_path *mpath;
2109         struct sta_info *sta;
2110
2111         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2112
2113         rcu_read_lock();
2114         sta = sta_info_get(sdata, next_hop);
2115         if (!sta) {
2116                 rcu_read_unlock();
2117                 return -ENOENT;
2118         }
2119
2120         mpath = mesh_path_add(sdata, dst);
2121         if (IS_ERR(mpath)) {
2122                 rcu_read_unlock();
2123                 return PTR_ERR(mpath);
2124         }
2125
2126         mesh_path_fix_nexthop(mpath, sta);
2127
2128         rcu_read_unlock();
2129         return 0;
2130 }
2131
2132 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2133                                const u8 *dst)
2134 {
2135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2136
2137         if (dst)
2138                 return mesh_path_del(sdata, dst);
2139
2140         mesh_path_flush_by_iface(sdata);
2141         return 0;
2142 }
2143
2144 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2145                                   const u8 *dst, const u8 *next_hop)
2146 {
2147         struct ieee80211_sub_if_data *sdata;
2148         struct mesh_path *mpath;
2149         struct sta_info *sta;
2150
2151         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2152
2153         rcu_read_lock();
2154
2155         sta = sta_info_get(sdata, next_hop);
2156         if (!sta) {
2157                 rcu_read_unlock();
2158                 return -ENOENT;
2159         }
2160
2161         mpath = mesh_path_lookup(sdata, dst);
2162         if (!mpath) {
2163                 rcu_read_unlock();
2164                 return -ENOENT;
2165         }
2166
2167         mesh_path_fix_nexthop(mpath, sta);
2168
2169         rcu_read_unlock();
2170         return 0;
2171 }
2172
2173 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2174                             struct mpath_info *pinfo)
2175 {
2176         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2177
2178         if (next_hop_sta)
2179                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2180         else
2181                 eth_zero_addr(next_hop);
2182
2183         memset(pinfo, 0, sizeof(*pinfo));
2184
2185         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2186
2187         pinfo->filled = MPATH_INFO_FRAME_QLEN |
2188                         MPATH_INFO_SN |
2189                         MPATH_INFO_METRIC |
2190                         MPATH_INFO_EXPTIME |
2191                         MPATH_INFO_DISCOVERY_TIMEOUT |
2192                         MPATH_INFO_DISCOVERY_RETRIES |
2193                         MPATH_INFO_FLAGS |
2194                         MPATH_INFO_HOP_COUNT |
2195                         MPATH_INFO_PATH_CHANGE;
2196
2197         pinfo->frame_qlen = mpath->frame_queue.qlen;
2198         pinfo->sn = mpath->sn;
2199         pinfo->metric = mpath->metric;
2200         if (time_before(jiffies, mpath->exp_time))
2201                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2202         pinfo->discovery_timeout =
2203                         jiffies_to_msecs(mpath->discovery_timeout);
2204         pinfo->discovery_retries = mpath->discovery_retries;
2205         if (mpath->flags & MESH_PATH_ACTIVE)
2206                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2207         if (mpath->flags & MESH_PATH_RESOLVING)
2208                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2209         if (mpath->flags & MESH_PATH_SN_VALID)
2210                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2211         if (mpath->flags & MESH_PATH_FIXED)
2212                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2213         if (mpath->flags & MESH_PATH_RESOLVED)
2214                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2215         pinfo->hop_count = mpath->hop_count;
2216         pinfo->path_change_count = mpath->path_change_count;
2217 }
2218
2219 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2220                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2221
2222 {
2223         struct ieee80211_sub_if_data *sdata;
2224         struct mesh_path *mpath;
2225
2226         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2227
2228         rcu_read_lock();
2229         mpath = mesh_path_lookup(sdata, dst);
2230         if (!mpath) {
2231                 rcu_read_unlock();
2232                 return -ENOENT;
2233         }
2234         memcpy(dst, mpath->dst, ETH_ALEN);
2235         mpath_set_pinfo(mpath, next_hop, pinfo);
2236         rcu_read_unlock();
2237         return 0;
2238 }
2239
2240 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2241                                 int idx, u8 *dst, u8 *next_hop,
2242                                 struct mpath_info *pinfo)
2243 {
2244         struct ieee80211_sub_if_data *sdata;
2245         struct mesh_path *mpath;
2246
2247         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2248
2249         rcu_read_lock();
2250         mpath = mesh_path_lookup_by_idx(sdata, idx);
2251         if (!mpath) {
2252                 rcu_read_unlock();
2253                 return -ENOENT;
2254         }
2255         memcpy(dst, mpath->dst, ETH_ALEN);
2256         mpath_set_pinfo(mpath, next_hop, pinfo);
2257         rcu_read_unlock();
2258         return 0;
2259 }
2260
2261 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2262                           struct mpath_info *pinfo)
2263 {
2264         memset(pinfo, 0, sizeof(*pinfo));
2265         memcpy(mpp, mpath->mpp, ETH_ALEN);
2266
2267         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2268 }
2269
2270 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2271                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2272
2273 {
2274         struct ieee80211_sub_if_data *sdata;
2275         struct mesh_path *mpath;
2276
2277         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2278
2279         rcu_read_lock();
2280         mpath = mpp_path_lookup(sdata, dst);
2281         if (!mpath) {
2282                 rcu_read_unlock();
2283                 return -ENOENT;
2284         }
2285         memcpy(dst, mpath->dst, ETH_ALEN);
2286         mpp_set_pinfo(mpath, mpp, pinfo);
2287         rcu_read_unlock();
2288         return 0;
2289 }
2290
2291 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2292                               int idx, u8 *dst, u8 *mpp,
2293                               struct mpath_info *pinfo)
2294 {
2295         struct ieee80211_sub_if_data *sdata;
2296         struct mesh_path *mpath;
2297
2298         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2299
2300         rcu_read_lock();
2301         mpath = mpp_path_lookup_by_idx(sdata, idx);
2302         if (!mpath) {
2303                 rcu_read_unlock();
2304                 return -ENOENT;
2305         }
2306         memcpy(dst, mpath->dst, ETH_ALEN);
2307         mpp_set_pinfo(mpath, mpp, pinfo);
2308         rcu_read_unlock();
2309         return 0;
2310 }
2311
2312 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2313                                 struct net_device *dev,
2314                                 struct mesh_config *conf)
2315 {
2316         struct ieee80211_sub_if_data *sdata;
2317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2318
2319         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2320         return 0;
2321 }
2322
2323 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2324 {
2325         return (mask >> (parm-1)) & 0x1;
2326 }
2327
2328 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2329                 const struct mesh_setup *setup)
2330 {
2331         u8 *new_ie;
2332         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2333                                         struct ieee80211_sub_if_data, u.mesh);
2334         int i;
2335
2336         /* allocate information elements */
2337         new_ie = NULL;
2338
2339         if (setup->ie_len) {
2340                 new_ie = kmemdup(setup->ie, setup->ie_len,
2341                                 GFP_KERNEL);
2342                 if (!new_ie)
2343                         return -ENOMEM;
2344         }
2345         ifmsh->ie_len = setup->ie_len;
2346         ifmsh->ie = new_ie;
2347
2348         /* now copy the rest of the setup parameters */
2349         ifmsh->mesh_id_len = setup->mesh_id_len;
2350         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2351         ifmsh->mesh_sp_id = setup->sync_method;
2352         ifmsh->mesh_pp_id = setup->path_sel_proto;
2353         ifmsh->mesh_pm_id = setup->path_metric;
2354         ifmsh->user_mpm = setup->user_mpm;
2355         ifmsh->mesh_auth_id = setup->auth_id;
2356         ifmsh->security = IEEE80211_MESH_SEC_NONE;
2357         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2358         if (setup->is_authenticated)
2359                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2360         if (setup->is_secure)
2361                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2362
2363         /* mcast rate setting in Mesh Node */
2364         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2365                                                 sizeof(setup->mcast_rate));
2366         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2367
2368         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2369         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2370
2371         sdata->beacon_rate_set = false;
2372         if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2373                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2374                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2375                         sdata->beacon_rateidx_mask[i] =
2376                                 setup->beacon_rate.control[i].legacy;
2377                         if (sdata->beacon_rateidx_mask[i])
2378                                 sdata->beacon_rate_set = true;
2379                 }
2380         }
2381
2382         return 0;
2383 }
2384
2385 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2386                                         struct net_device *dev, u32 mask,
2387                                         const struct mesh_config *nconf)
2388 {
2389         struct mesh_config *conf;
2390         struct ieee80211_sub_if_data *sdata;
2391         struct ieee80211_if_mesh *ifmsh;
2392
2393         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2394         ifmsh = &sdata->u.mesh;
2395
2396         /* Set the config options which we are interested in setting */
2397         conf = &(sdata->u.mesh.mshcfg);
2398         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2399                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2400         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2401                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2402         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2403                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2404         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2405                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2406         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2407                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2408         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2409                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2410         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2411                 conf->element_ttl = nconf->element_ttl;
2412         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2413                 if (ifmsh->user_mpm)
2414                         return -EBUSY;
2415                 conf->auto_open_plinks = nconf->auto_open_plinks;
2416         }
2417         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2418                 conf->dot11MeshNbrOffsetMaxNeighbor =
2419                         nconf->dot11MeshNbrOffsetMaxNeighbor;
2420         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2421                 conf->dot11MeshHWMPmaxPREQretries =
2422                         nconf->dot11MeshHWMPmaxPREQretries;
2423         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2424                 conf->path_refresh_time = nconf->path_refresh_time;
2425         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2426                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2427         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2428                 conf->dot11MeshHWMPactivePathTimeout =
2429                         nconf->dot11MeshHWMPactivePathTimeout;
2430         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2431                 conf->dot11MeshHWMPpreqMinInterval =
2432                         nconf->dot11MeshHWMPpreqMinInterval;
2433         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2434                 conf->dot11MeshHWMPperrMinInterval =
2435                         nconf->dot11MeshHWMPperrMinInterval;
2436         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2437                            mask))
2438                 conf->dot11MeshHWMPnetDiameterTraversalTime =
2439                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
2440         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2441                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2442                 ieee80211_mesh_root_setup(ifmsh);
2443         }
2444         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2445                 /* our current gate announcement implementation rides on root
2446                  * announcements, so require this ifmsh to also be a root node
2447                  * */
2448                 if (nconf->dot11MeshGateAnnouncementProtocol &&
2449                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2450                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2451                         ieee80211_mesh_root_setup(ifmsh);
2452                 }
2453                 conf->dot11MeshGateAnnouncementProtocol =
2454                         nconf->dot11MeshGateAnnouncementProtocol;
2455         }
2456         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2457                 conf->dot11MeshHWMPRannInterval =
2458                         nconf->dot11MeshHWMPRannInterval;
2459         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2460                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2461         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2462                 /* our RSSI threshold implementation is supported only for
2463                  * devices that report signal in dBm.
2464                  */
2465                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2466                         return -ENOTSUPP;
2467                 conf->rssi_threshold = nconf->rssi_threshold;
2468         }
2469         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2470                 conf->ht_opmode = nconf->ht_opmode;
2471                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2472                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2473                                                   BSS_CHANGED_HT);
2474         }
2475         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2476                 conf->dot11MeshHWMPactivePathToRootTimeout =
2477                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2478         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2479                 conf->dot11MeshHWMProotInterval =
2480                         nconf->dot11MeshHWMProotInterval;
2481         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2482                 conf->dot11MeshHWMPconfirmationInterval =
2483                         nconf->dot11MeshHWMPconfirmationInterval;
2484         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2485                 conf->power_mode = nconf->power_mode;
2486                 ieee80211_mps_local_status_update(sdata);
2487         }
2488         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2489                 conf->dot11MeshAwakeWindowDuration =
2490                         nconf->dot11MeshAwakeWindowDuration;
2491         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2492                 conf->plink_timeout = nconf->plink_timeout;
2493         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2494                 conf->dot11MeshConnectedToMeshGate =
2495                         nconf->dot11MeshConnectedToMeshGate;
2496         if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2497                 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2498         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2499                 conf->dot11MeshConnectedToAuthServer =
2500                         nconf->dot11MeshConnectedToAuthServer;
2501         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2502         return 0;
2503 }
2504
2505 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2506                                const struct mesh_config *conf,
2507                                const struct mesh_setup *setup)
2508 {
2509         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2510         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2511         int err;
2512
2513         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2514         err = copy_mesh_setup(ifmsh, setup);
2515         if (err)
2516                 return err;
2517
2518         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2519
2520         /* can mesh use other SMPS modes? */
2521         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2522         sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2523
2524         mutex_lock(&sdata->local->mtx);
2525         err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef,
2526                                          IEEE80211_CHANCTX_SHARED);
2527         mutex_unlock(&sdata->local->mtx);
2528         if (err)
2529                 return err;
2530
2531         return ieee80211_start_mesh(sdata);
2532 }
2533
2534 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2535 {
2536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2537
2538         ieee80211_stop_mesh(sdata);
2539         mutex_lock(&sdata->local->mtx);
2540         ieee80211_link_release_channel(&sdata->deflink);
2541         kfree(sdata->u.mesh.ie);
2542         mutex_unlock(&sdata->local->mtx);
2543
2544         return 0;
2545 }
2546 #endif
2547
2548 static int ieee80211_change_bss(struct wiphy *wiphy,
2549                                 struct net_device *dev,
2550                                 struct bss_parameters *params)
2551 {
2552         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2553         struct ieee80211_supported_band *sband;
2554         u32 changed = 0;
2555
2556         if (!sdata_dereference(sdata->deflink.u.ap.beacon, sdata))
2557                 return -ENOENT;
2558
2559         sband = ieee80211_get_sband(sdata);
2560         if (!sband)
2561                 return -EINVAL;
2562
2563         if (params->use_cts_prot >= 0) {
2564                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2565                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2566         }
2567         if (params->use_short_preamble >= 0) {
2568                 sdata->vif.bss_conf.use_short_preamble =
2569                         params->use_short_preamble;
2570                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2571         }
2572
2573         if (!sdata->vif.bss_conf.use_short_slot &&
2574             (sband->band == NL80211_BAND_5GHZ ||
2575              sband->band == NL80211_BAND_6GHZ)) {
2576                 sdata->vif.bss_conf.use_short_slot = true;
2577                 changed |= BSS_CHANGED_ERP_SLOT;
2578         }
2579
2580         if (params->use_short_slot_time >= 0) {
2581                 sdata->vif.bss_conf.use_short_slot =
2582                         params->use_short_slot_time;
2583                 changed |= BSS_CHANGED_ERP_SLOT;
2584         }
2585
2586         if (params->basic_rates) {
2587                 ieee80211_parse_bitrates(sdata->vif.bss_conf.chandef.width,
2588                                          wiphy->bands[sband->band],
2589                                          params->basic_rates,
2590                                          params->basic_rates_len,
2591                                          &sdata->vif.bss_conf.basic_rates);
2592                 changed |= BSS_CHANGED_BASIC_RATES;
2593                 ieee80211_check_rate_mask(&sdata->deflink);
2594         }
2595
2596         if (params->ap_isolate >= 0) {
2597                 if (params->ap_isolate)
2598                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2599                 else
2600                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2601                 ieee80211_check_fast_rx_iface(sdata);
2602         }
2603
2604         if (params->ht_opmode >= 0) {
2605                 sdata->vif.bss_conf.ht_operation_mode =
2606                         (u16) params->ht_opmode;
2607                 changed |= BSS_CHANGED_HT;
2608         }
2609
2610         if (params->p2p_ctwindow >= 0) {
2611                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2612                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2613                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2614                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2615                 changed |= BSS_CHANGED_P2P_PS;
2616         }
2617
2618         if (params->p2p_opp_ps > 0) {
2619                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2620                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2621                 changed |= BSS_CHANGED_P2P_PS;
2622         } else if (params->p2p_opp_ps == 0) {
2623                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2624                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2625                 changed |= BSS_CHANGED_P2P_PS;
2626         }
2627
2628         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
2629
2630         return 0;
2631 }
2632
2633 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2634                                     struct net_device *dev,
2635                                     struct ieee80211_txq_params *params)
2636 {
2637         struct ieee80211_local *local = wiphy_priv(wiphy);
2638         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2639         struct ieee80211_link_data *link =
2640                 ieee80211_link_or_deflink(sdata, params->link_id, true);
2641         struct ieee80211_tx_queue_params p;
2642
2643         if (!local->ops->conf_tx)
2644                 return -EOPNOTSUPP;
2645
2646         if (local->hw.queues < IEEE80211_NUM_ACS)
2647                 return -EOPNOTSUPP;
2648
2649         if (IS_ERR(link))
2650                 return PTR_ERR(link);
2651
2652         memset(&p, 0, sizeof(p));
2653         p.aifs = params->aifs;
2654         p.cw_max = params->cwmax;
2655         p.cw_min = params->cwmin;
2656         p.txop = params->txop;
2657
2658         /*
2659          * Setting tx queue params disables u-apsd because it's only
2660          * called in master mode.
2661          */
2662         p.uapsd = false;
2663
2664         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2665
2666         link->tx_conf[params->ac] = p;
2667         if (drv_conf_tx(local, link, params->ac, &p)) {
2668                 wiphy_debug(local->hw.wiphy,
2669                             "failed to set TX queue parameters for AC %d\n",
2670                             params->ac);
2671                 return -EINVAL;
2672         }
2673
2674         ieee80211_link_info_change_notify(sdata, link,
2675                                           BSS_CHANGED_QOS);
2676
2677         return 0;
2678 }
2679
2680 #ifdef CONFIG_PM
2681 static int ieee80211_suspend(struct wiphy *wiphy,
2682                              struct cfg80211_wowlan *wowlan)
2683 {
2684         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2685 }
2686
2687 static int ieee80211_resume(struct wiphy *wiphy)
2688 {
2689         return __ieee80211_resume(wiphy_priv(wiphy));
2690 }
2691 #else
2692 #define ieee80211_suspend NULL
2693 #define ieee80211_resume NULL
2694 #endif
2695
2696 static int ieee80211_scan(struct wiphy *wiphy,
2697                           struct cfg80211_scan_request *req)
2698 {
2699         struct ieee80211_sub_if_data *sdata;
2700
2701         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2702
2703         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2704         case NL80211_IFTYPE_STATION:
2705         case NL80211_IFTYPE_ADHOC:
2706         case NL80211_IFTYPE_MESH_POINT:
2707         case NL80211_IFTYPE_P2P_CLIENT:
2708         case NL80211_IFTYPE_P2P_DEVICE:
2709                 break;
2710         case NL80211_IFTYPE_P2P_GO:
2711                 if (sdata->local->ops->hw_scan)
2712                         break;
2713                 /*
2714                  * FIXME: implement NoA while scanning in software,
2715                  * for now fall through to allow scanning only when
2716                  * beaconing hasn't been configured yet
2717                  */
2718                 fallthrough;
2719         case NL80211_IFTYPE_AP:
2720                 /*
2721                  * If the scan has been forced (and the driver supports
2722                  * forcing), don't care about being beaconing already.
2723                  * This will create problems to the attached stations (e.g. all
2724                  * the  frames sent while scanning on other channel will be
2725                  * lost)
2726                  */
2727                 if (sdata->deflink.u.ap.beacon &&
2728                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2729                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2730                         return -EOPNOTSUPP;
2731                 break;
2732         case NL80211_IFTYPE_NAN:
2733         default:
2734                 return -EOPNOTSUPP;
2735         }
2736
2737         return ieee80211_request_scan(sdata, req);
2738 }
2739
2740 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2741 {
2742         ieee80211_scan_cancel(wiphy_priv(wiphy));
2743 }
2744
2745 static int
2746 ieee80211_sched_scan_start(struct wiphy *wiphy,
2747                            struct net_device *dev,
2748                            struct cfg80211_sched_scan_request *req)
2749 {
2750         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2751
2752         if (!sdata->local->ops->sched_scan_start)
2753                 return -EOPNOTSUPP;
2754
2755         return ieee80211_request_sched_scan_start(sdata, req);
2756 }
2757
2758 static int
2759 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2760                           u64 reqid)
2761 {
2762         struct ieee80211_local *local = wiphy_priv(wiphy);
2763
2764         if (!local->ops->sched_scan_stop)
2765                 return -EOPNOTSUPP;
2766
2767         return ieee80211_request_sched_scan_stop(local);
2768 }
2769
2770 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2771                           struct cfg80211_auth_request *req)
2772 {
2773         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2774 }
2775
2776 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2777                            struct cfg80211_assoc_request *req)
2778 {
2779         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2780 }
2781
2782 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2783                             struct cfg80211_deauth_request *req)
2784 {
2785         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2786 }
2787
2788 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2789                               struct cfg80211_disassoc_request *req)
2790 {
2791         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2792 }
2793
2794 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2795                                struct cfg80211_ibss_params *params)
2796 {
2797         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2798 }
2799
2800 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2801 {
2802         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2803 }
2804
2805 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2806                               struct ocb_setup *setup)
2807 {
2808         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2809 }
2810
2811 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2812 {
2813         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2814 }
2815
2816 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2817                                     int rate[NUM_NL80211_BANDS])
2818 {
2819         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2820
2821         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2822                sizeof(int) * NUM_NL80211_BANDS);
2823
2824         ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2825                                           BSS_CHANGED_MCAST_RATE);
2826
2827         return 0;
2828 }
2829
2830 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2831 {
2832         struct ieee80211_local *local = wiphy_priv(wiphy);
2833         int err;
2834
2835         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2836                 ieee80211_check_fast_xmit_all(local);
2837
2838                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2839
2840                 if (err) {
2841                         ieee80211_check_fast_xmit_all(local);
2842                         return err;
2843                 }
2844         }
2845
2846         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2847             (changed & WIPHY_PARAM_DYN_ACK)) {
2848                 s16 coverage_class;
2849
2850                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2851                                         wiphy->coverage_class : -1;
2852                 err = drv_set_coverage_class(local, coverage_class);
2853
2854                 if (err)
2855                         return err;
2856         }
2857
2858         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2859                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2860
2861                 if (err)
2862                         return err;
2863         }
2864
2865         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2866                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2867                         return -EINVAL;
2868                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2869         }
2870         if (changed & WIPHY_PARAM_RETRY_LONG) {
2871                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2872                         return -EINVAL;
2873                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2874         }
2875         if (changed &
2876             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2877                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2878
2879         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2880                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2881                        WIPHY_PARAM_TXQ_QUANTUM))
2882                 ieee80211_txq_set_params(local);
2883
2884         return 0;
2885 }
2886
2887 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2888                                   struct wireless_dev *wdev,
2889                                   enum nl80211_tx_power_setting type, int mbm)
2890 {
2891         struct ieee80211_local *local = wiphy_priv(wiphy);
2892         struct ieee80211_sub_if_data *sdata;
2893         enum nl80211_tx_power_setting txp_type = type;
2894         bool update_txp_type = false;
2895         bool has_monitor = false;
2896
2897         if (wdev) {
2898                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2899
2900                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2901                         sdata = wiphy_dereference(local->hw.wiphy,
2902                                                   local->monitor_sdata);
2903                         if (!sdata)
2904                                 return -EOPNOTSUPP;
2905                 }
2906
2907                 switch (type) {
2908                 case NL80211_TX_POWER_AUTOMATIC:
2909                         sdata->deflink.user_power_level =
2910                                 IEEE80211_UNSET_POWER_LEVEL;
2911                         txp_type = NL80211_TX_POWER_LIMITED;
2912                         break;
2913                 case NL80211_TX_POWER_LIMITED:
2914                 case NL80211_TX_POWER_FIXED:
2915                         if (mbm < 0 || (mbm % 100))
2916                                 return -EOPNOTSUPP;
2917                         sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
2918                         break;
2919                 }
2920
2921                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2922                         update_txp_type = true;
2923                         sdata->vif.bss_conf.txpower_type = txp_type;
2924                 }
2925
2926                 ieee80211_recalc_txpower(sdata, update_txp_type);
2927
2928                 return 0;
2929         }
2930
2931         switch (type) {
2932         case NL80211_TX_POWER_AUTOMATIC:
2933                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2934                 txp_type = NL80211_TX_POWER_LIMITED;
2935                 break;
2936         case NL80211_TX_POWER_LIMITED:
2937         case NL80211_TX_POWER_FIXED:
2938                 if (mbm < 0 || (mbm % 100))
2939                         return -EOPNOTSUPP;
2940                 local->user_power_level = MBM_TO_DBM(mbm);
2941                 break;
2942         }
2943
2944         mutex_lock(&local->iflist_mtx);
2945         list_for_each_entry(sdata, &local->interfaces, list) {
2946                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2947                         has_monitor = true;
2948                         continue;
2949                 }
2950                 sdata->deflink.user_power_level = local->user_power_level;
2951                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2952                         update_txp_type = true;
2953                 sdata->vif.bss_conf.txpower_type = txp_type;
2954         }
2955         list_for_each_entry(sdata, &local->interfaces, list) {
2956                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2957                         continue;
2958                 ieee80211_recalc_txpower(sdata, update_txp_type);
2959         }
2960         mutex_unlock(&local->iflist_mtx);
2961
2962         if (has_monitor) {
2963                 sdata = wiphy_dereference(local->hw.wiphy,
2964                                           local->monitor_sdata);
2965                 if (sdata) {
2966                         sdata->deflink.user_power_level = local->user_power_level;
2967                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2968                                 update_txp_type = true;
2969                         sdata->vif.bss_conf.txpower_type = txp_type;
2970
2971                         ieee80211_recalc_txpower(sdata, update_txp_type);
2972                 }
2973         }
2974
2975         return 0;
2976 }
2977
2978 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2979                                   struct wireless_dev *wdev,
2980                                   int *dbm)
2981 {
2982         struct ieee80211_local *local = wiphy_priv(wiphy);
2983         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2984
2985         if (local->ops->get_txpower)
2986                 return drv_get_txpower(local, sdata, dbm);
2987
2988         if (!local->use_chanctx)
2989                 *dbm = local->hw.conf.power_level;
2990         else
2991                 *dbm = sdata->vif.bss_conf.txpower;
2992
2993         return 0;
2994 }
2995
2996 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2997 {
2998         struct ieee80211_local *local = wiphy_priv(wiphy);
2999
3000         drv_rfkill_poll(local);
3001 }
3002
3003 #ifdef CONFIG_NL80211_TESTMODE
3004 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3005                                   struct wireless_dev *wdev,
3006                                   void *data, int len)
3007 {
3008         struct ieee80211_local *local = wiphy_priv(wiphy);
3009         struct ieee80211_vif *vif = NULL;
3010
3011         if (!local->ops->testmode_cmd)
3012                 return -EOPNOTSUPP;
3013
3014         if (wdev) {
3015                 struct ieee80211_sub_if_data *sdata;
3016
3017                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3018                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3019                         vif = &sdata->vif;
3020         }
3021
3022         return local->ops->testmode_cmd(&local->hw, vif, data, len);
3023 }
3024
3025 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3026                                    struct sk_buff *skb,
3027                                    struct netlink_callback *cb,
3028                                    void *data, int len)
3029 {
3030         struct ieee80211_local *local = wiphy_priv(wiphy);
3031
3032         if (!local->ops->testmode_dump)
3033                 return -EOPNOTSUPP;
3034
3035         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3036 }
3037 #endif
3038
3039 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3040                                  struct ieee80211_link_data *link,
3041                                  enum ieee80211_smps_mode smps_mode)
3042 {
3043         const u8 *ap;
3044         enum ieee80211_smps_mode old_req;
3045         int err;
3046         struct sta_info *sta;
3047         bool tdls_peer_found = false;
3048
3049         lockdep_assert_held(&sdata->wdev.mtx);
3050
3051         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3052                 return -EINVAL;
3053
3054         old_req = link->u.mgd.req_smps;
3055         link->u.mgd.req_smps = smps_mode;
3056
3057         if (old_req == smps_mode &&
3058             smps_mode != IEEE80211_SMPS_AUTOMATIC)
3059                 return 0;
3060
3061         /*
3062          * If not associated, or current association is not an HT
3063          * association, there's no need to do anything, just store
3064          * the new value until we associate.
3065          */
3066         if (!sdata->u.mgd.associated ||
3067             link->conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
3068                 return 0;
3069
3070         ap = link->u.mgd.bssid;
3071
3072         rcu_read_lock();
3073         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3074                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3075                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3076                         continue;
3077
3078                 tdls_peer_found = true;
3079                 break;
3080         }
3081         rcu_read_unlock();
3082
3083         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3084                 if (tdls_peer_found || !sdata->u.mgd.powersave)
3085                         smps_mode = IEEE80211_SMPS_OFF;
3086                 else
3087                         smps_mode = IEEE80211_SMPS_DYNAMIC;
3088         }
3089
3090         /* send SM PS frame to AP */
3091         err = ieee80211_send_smps_action(sdata, smps_mode,
3092                                          ap, ap);
3093         if (err)
3094                 link->u.mgd.req_smps = old_req;
3095         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3096                 ieee80211_teardown_tdls_peers(sdata);
3097
3098         return err;
3099 }
3100
3101 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3102                                     bool enabled, int timeout)
3103 {
3104         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3105         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3106         unsigned int link_id;
3107
3108         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3109                 return -EOPNOTSUPP;
3110
3111         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3112                 return -EOPNOTSUPP;
3113
3114         if (enabled == sdata->u.mgd.powersave &&
3115             timeout == local->dynamic_ps_forced_timeout)
3116                 return 0;
3117
3118         sdata->u.mgd.powersave = enabled;
3119         local->dynamic_ps_forced_timeout = timeout;
3120
3121         /* no change, but if automatic follow powersave */
3122         sdata_lock(sdata);
3123         for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3124                 struct ieee80211_link_data *link;
3125
3126                 link = sdata_dereference(sdata->link[link_id], sdata);
3127
3128                 if (!link)
3129                         continue;
3130                 __ieee80211_request_smps_mgd(sdata, link,
3131                                              link->u.mgd.req_smps);
3132         }
3133         sdata_unlock(sdata);
3134
3135         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3136                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3137
3138         ieee80211_recalc_ps(local);
3139         ieee80211_recalc_ps_vif(sdata);
3140         ieee80211_check_fast_rx_iface(sdata);
3141
3142         return 0;
3143 }
3144
3145 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3146                                          struct net_device *dev,
3147                                          s32 rssi_thold, u32 rssi_hyst)
3148 {
3149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3150         struct ieee80211_vif *vif = &sdata->vif;
3151         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3152
3153         if (rssi_thold == bss_conf->cqm_rssi_thold &&
3154             rssi_hyst == bss_conf->cqm_rssi_hyst)
3155                 return 0;
3156
3157         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3158             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3159                 return -EOPNOTSUPP;
3160
3161         bss_conf->cqm_rssi_thold = rssi_thold;
3162         bss_conf->cqm_rssi_hyst = rssi_hyst;
3163         bss_conf->cqm_rssi_low = 0;
3164         bss_conf->cqm_rssi_high = 0;
3165         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3166
3167         /* tell the driver upon association, unless already associated */
3168         if (sdata->u.mgd.associated &&
3169             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3170                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3171                                                   BSS_CHANGED_CQM);
3172
3173         return 0;
3174 }
3175
3176 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3177                                                struct net_device *dev,
3178                                                s32 rssi_low, s32 rssi_high)
3179 {
3180         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3181         struct ieee80211_vif *vif = &sdata->vif;
3182         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3183
3184         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
3185                 return -EOPNOTSUPP;
3186
3187         bss_conf->cqm_rssi_low = rssi_low;
3188         bss_conf->cqm_rssi_high = rssi_high;
3189         bss_conf->cqm_rssi_thold = 0;
3190         bss_conf->cqm_rssi_hyst = 0;
3191         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3192
3193         /* tell the driver upon association, unless already associated */
3194         if (sdata->u.mgd.associated &&
3195             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3196                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3197                                                   BSS_CHANGED_CQM);
3198
3199         return 0;
3200 }
3201
3202 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3203                                       struct net_device *dev,
3204                                       unsigned int link_id,
3205                                       const u8 *addr,
3206                                       const struct cfg80211_bitrate_mask *mask)
3207 {
3208         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3209         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3210         int i, ret;
3211
3212         if (!ieee80211_sdata_running(sdata))
3213                 return -ENETDOWN;
3214
3215         /*
3216          * If active validate the setting and reject it if it doesn't leave
3217          * at least one basic rate usable, since we really have to be able
3218          * to send something, and if we're an AP we have to be able to do
3219          * so at a basic rate so that all clients can receive it.
3220          */
3221         if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3222             sdata->vif.bss_conf.chandef.chan) {
3223                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3224                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
3225
3226                 if (!(mask->control[band].legacy & basic_rates))
3227                         return -EINVAL;
3228         }
3229
3230         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3231                 ret = drv_set_bitrate_mask(local, sdata, mask);
3232                 if (ret)
3233                         return ret;
3234         }
3235
3236         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3237                 struct ieee80211_supported_band *sband = wiphy->bands[i];
3238                 int j;
3239
3240                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3241                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3242                        sizeof(mask->control[i].ht_mcs));
3243                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3244                        mask->control[i].vht_mcs,
3245                        sizeof(mask->control[i].vht_mcs));
3246
3247                 sdata->rc_has_mcs_mask[i] = false;
3248                 sdata->rc_has_vht_mcs_mask[i] = false;
3249                 if (!sband)
3250                         continue;
3251
3252                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3253                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3254                                 sdata->rc_has_mcs_mask[i] = true;
3255                                 break;
3256                         }
3257                 }
3258
3259                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3260                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3261                                 sdata->rc_has_vht_mcs_mask[i] = true;
3262                                 break;
3263                         }
3264                 }
3265         }
3266
3267         return 0;
3268 }
3269
3270 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3271                                            struct net_device *dev,
3272                                            struct cfg80211_chan_def *chandef,
3273                                            u32 cac_time_ms)
3274 {
3275         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3276         struct ieee80211_local *local = sdata->local;
3277         int err;
3278
3279         mutex_lock(&local->mtx);
3280         if (!list_empty(&local->roc_list) || local->scanning) {
3281                 err = -EBUSY;
3282                 goto out_unlock;
3283         }
3284
3285         /* whatever, but channel contexts should not complain about that one */
3286         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3287         sdata->deflink.needed_rx_chains = local->rx_chains;
3288
3289         err = ieee80211_link_use_channel(&sdata->deflink, chandef,
3290                                          IEEE80211_CHANCTX_SHARED);
3291         if (err)
3292                 goto out_unlock;
3293
3294         ieee80211_queue_delayed_work(&sdata->local->hw,
3295                                      &sdata->deflink.dfs_cac_timer_work,
3296                                      msecs_to_jiffies(cac_time_ms));
3297
3298  out_unlock:
3299         mutex_unlock(&local->mtx);
3300         return err;
3301 }
3302
3303 static void ieee80211_end_cac(struct wiphy *wiphy,
3304                               struct net_device *dev)
3305 {
3306         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3307         struct ieee80211_local *local = sdata->local;
3308
3309         mutex_lock(&local->mtx);
3310         list_for_each_entry(sdata, &local->interfaces, list) {
3311                 /* it might be waiting for the local->mtx, but then
3312                  * by the time it gets it, sdata->wdev.cac_started
3313                  * will no longer be true
3314                  */
3315                 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
3316
3317                 if (sdata->wdev.cac_started) {
3318                         ieee80211_link_release_channel(&sdata->deflink);
3319                         sdata->wdev.cac_started = false;
3320                 }
3321         }
3322         mutex_unlock(&local->mtx);
3323 }
3324
3325 static struct cfg80211_beacon_data *
3326 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3327 {
3328         struct cfg80211_beacon_data *new_beacon;
3329         u8 *pos;
3330         int len;
3331
3332         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3333               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3334               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len +
3335               ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies);
3336
3337         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3338         if (!new_beacon)
3339                 return NULL;
3340
3341         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3342                 new_beacon->mbssid_ies =
3343                         kzalloc(struct_size(new_beacon->mbssid_ies,
3344                                             elem, beacon->mbssid_ies->cnt),
3345                                 GFP_KERNEL);
3346                 if (!new_beacon->mbssid_ies) {
3347                         kfree(new_beacon);
3348                         return NULL;
3349                 }
3350         }
3351
3352         pos = (u8 *)(new_beacon + 1);
3353         if (beacon->head_len) {
3354                 new_beacon->head_len = beacon->head_len;
3355                 new_beacon->head = pos;
3356                 memcpy(pos, beacon->head, beacon->head_len);
3357                 pos += beacon->head_len;
3358         }
3359         if (beacon->tail_len) {
3360                 new_beacon->tail_len = beacon->tail_len;
3361                 new_beacon->tail = pos;
3362                 memcpy(pos, beacon->tail, beacon->tail_len);
3363                 pos += beacon->tail_len;
3364         }
3365         if (beacon->beacon_ies_len) {
3366                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3367                 new_beacon->beacon_ies = pos;
3368                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3369                 pos += beacon->beacon_ies_len;
3370         }
3371         if (beacon->proberesp_ies_len) {
3372                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3373                 new_beacon->proberesp_ies = pos;
3374                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3375                 pos += beacon->proberesp_ies_len;
3376         }
3377         if (beacon->assocresp_ies_len) {
3378                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3379                 new_beacon->assocresp_ies = pos;
3380                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3381                 pos += beacon->assocresp_ies_len;
3382         }
3383         if (beacon->probe_resp_len) {
3384                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3385                 new_beacon->probe_resp = pos;
3386                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3387                 pos += beacon->probe_resp_len;
3388         }
3389         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt)
3390                 pos += ieee80211_copy_mbssid_beacon(pos,
3391                                                     new_beacon->mbssid_ies,
3392                                                     beacon->mbssid_ies);
3393
3394         /* might copy -1, meaning no changes requested */
3395         new_beacon->ftm_responder = beacon->ftm_responder;
3396         if (beacon->lci) {
3397                 new_beacon->lci_len = beacon->lci_len;
3398                 new_beacon->lci = pos;
3399                 memcpy(pos, beacon->lci, beacon->lci_len);
3400                 pos += beacon->lci_len;
3401         }
3402         if (beacon->civicloc) {
3403                 new_beacon->civicloc_len = beacon->civicloc_len;
3404                 new_beacon->civicloc = pos;
3405                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3406                 pos += beacon->civicloc_len;
3407         }
3408
3409         return new_beacon;
3410 }
3411
3412 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3413 {
3414         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3415         struct ieee80211_local *local = sdata->local;
3416
3417         rcu_read_lock();
3418
3419         if (vif->mbssid_tx_vif == vif) {
3420                 /* Trigger ieee80211_csa_finish() on the non-transmitting
3421                  * interfaces when channel switch is received on
3422                  * transmitting interface
3423                  */
3424                 struct ieee80211_sub_if_data *iter;
3425
3426                 list_for_each_entry_rcu(iter, &local->interfaces, list) {
3427                         if (!ieee80211_sdata_running(iter))
3428                                 continue;
3429
3430                         if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3431                                 continue;
3432
3433                         ieee80211_queue_work(&iter->local->hw,
3434                                              &iter->deflink.csa_finalize_work);
3435                 }
3436         }
3437         ieee80211_queue_work(&local->hw, &sdata->deflink.csa_finalize_work);
3438
3439         rcu_read_unlock();
3440 }
3441 EXPORT_SYMBOL(ieee80211_csa_finish);
3442
3443 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3444 {
3445         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3446         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3447         struct ieee80211_local *local = sdata->local;
3448
3449         sdata->deflink.csa_block_tx = block_tx;
3450         sdata_info(sdata, "channel switch failed, disconnecting\n");
3451         ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
3452 }
3453 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3454
3455 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3456                                           u32 *changed)
3457 {
3458         int err;
3459
3460         switch (sdata->vif.type) {
3461         case NL80211_IFTYPE_AP:
3462                 if (!sdata->deflink.u.ap.next_beacon)
3463                         return -EINVAL;
3464
3465                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3466                                               sdata->deflink.u.ap.next_beacon,
3467                                               NULL, NULL);
3468                 ieee80211_free_next_beacon(&sdata->deflink);
3469
3470                 if (err < 0)
3471                         return err;
3472                 *changed |= err;
3473                 break;
3474         case NL80211_IFTYPE_ADHOC:
3475                 err = ieee80211_ibss_finish_csa(sdata);
3476                 if (err < 0)
3477                         return err;
3478                 *changed |= err;
3479                 break;
3480 #ifdef CONFIG_MAC80211_MESH
3481         case NL80211_IFTYPE_MESH_POINT:
3482                 err = ieee80211_mesh_finish_csa(sdata);
3483                 if (err < 0)
3484                         return err;
3485                 *changed |= err;
3486                 break;
3487 #endif
3488         default:
3489                 WARN_ON(1);
3490                 return -EINVAL;
3491         }
3492
3493         return 0;
3494 }
3495
3496 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3497 {
3498         struct ieee80211_local *local = sdata->local;
3499         u32 changed = 0;
3500         int err;
3501
3502         sdata_assert_lock(sdata);
3503         lockdep_assert_held(&local->mtx);
3504         lockdep_assert_held(&local->chanctx_mtx);
3505
3506         /*
3507          * using reservation isn't immediate as it may be deferred until later
3508          * with multi-vif. once reservation is complete it will re-schedule the
3509          * work with no reserved_chanctx so verify chandef to check if it
3510          * completed successfully
3511          */
3512
3513         if (sdata->deflink.reserved_chanctx) {
3514                 /*
3515                  * with multi-vif csa driver may call ieee80211_csa_finish()
3516                  * many times while waiting for other interfaces to use their
3517                  * reservations
3518                  */
3519                 if (sdata->deflink.reserved_ready)
3520                         return 0;
3521
3522                 return ieee80211_link_use_reserved_context(&sdata->deflink);
3523         }
3524
3525         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3526                                         &sdata->deflink.csa_chandef))
3527                 return -EINVAL;
3528
3529         sdata->vif.bss_conf.csa_active = false;
3530
3531         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3532         if (err)
3533                 return err;
3534
3535         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
3536
3537         if (sdata->deflink.csa_block_tx) {
3538                 ieee80211_wake_vif_queues(local, sdata,
3539                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3540                 sdata->deflink.csa_block_tx = false;
3541         }
3542
3543         err = drv_post_channel_switch(sdata);
3544         if (err)
3545                 return err;
3546
3547         cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0);
3548
3549         return 0;
3550 }
3551
3552 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3553 {
3554         if (__ieee80211_csa_finalize(sdata)) {
3555                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3556                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3557                                     GFP_KERNEL);
3558         }
3559 }
3560
3561 void ieee80211_csa_finalize_work(struct work_struct *work)
3562 {
3563         struct ieee80211_sub_if_data *sdata =
3564                 container_of(work, struct ieee80211_sub_if_data,
3565                              deflink.csa_finalize_work);
3566         struct ieee80211_local *local = sdata->local;
3567
3568         sdata_lock(sdata);
3569         mutex_lock(&local->mtx);
3570         mutex_lock(&local->chanctx_mtx);
3571
3572         /* AP might have been stopped while waiting for the lock. */
3573         if (!sdata->vif.bss_conf.csa_active)
3574                 goto unlock;
3575
3576         if (!ieee80211_sdata_running(sdata))
3577                 goto unlock;
3578
3579         ieee80211_csa_finalize(sdata);
3580
3581 unlock:
3582         mutex_unlock(&local->chanctx_mtx);
3583         mutex_unlock(&local->mtx);
3584         sdata_unlock(sdata);
3585 }
3586
3587 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3588                                     struct cfg80211_csa_settings *params,
3589                                     u32 *changed)
3590 {
3591         struct ieee80211_csa_settings csa = {};
3592         int err;
3593
3594         switch (sdata->vif.type) {
3595         case NL80211_IFTYPE_AP:
3596                 sdata->deflink.u.ap.next_beacon =
3597                         cfg80211_beacon_dup(&params->beacon_after);
3598                 if (!sdata->deflink.u.ap.next_beacon)
3599                         return -ENOMEM;
3600
3601                 /*
3602                  * With a count of 0, we don't have to wait for any
3603                  * TBTT before switching, so complete the CSA
3604                  * immediately.  In theory, with a count == 1 we
3605                  * should delay the switch until just before the next
3606                  * TBTT, but that would complicate things so we switch
3607                  * immediately too.  If we would delay the switch
3608                  * until the next TBTT, we would have to set the probe
3609                  * response here.
3610                  *
3611                  * TODO: A channel switch with count <= 1 without
3612                  * sending a CSA action frame is kind of useless,
3613                  * because the clients won't know we're changing
3614                  * channels.  The action frame must be implemented
3615                  * either here or in the userspace.
3616                  */
3617                 if (params->count <= 1)
3618                         break;
3619
3620                 if ((params->n_counter_offsets_beacon >
3621                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3622                     (params->n_counter_offsets_presp >
3623                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3624                         ieee80211_free_next_beacon(&sdata->deflink);
3625                         return -EINVAL;
3626                 }
3627
3628                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3629                 csa.counter_offsets_presp = params->counter_offsets_presp;
3630                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3631                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3632                 csa.count = params->count;
3633
3634                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3635                                               &params->beacon_csa, &csa,
3636                                               NULL);
3637                 if (err < 0) {
3638                         ieee80211_free_next_beacon(&sdata->deflink);
3639                         return err;
3640                 }
3641                 *changed |= err;
3642
3643                 break;
3644         case NL80211_IFTYPE_ADHOC:
3645                 if (!sdata->vif.cfg.ibss_joined)
3646                         return -EINVAL;
3647
3648                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3649                         return -EINVAL;
3650
3651                 switch (params->chandef.width) {
3652                 case NL80211_CHAN_WIDTH_40:
3653                         if (cfg80211_get_chandef_type(&params->chandef) !=
3654                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3655                                 return -EINVAL;
3656                         break;
3657                 case NL80211_CHAN_WIDTH_5:
3658                 case NL80211_CHAN_WIDTH_10:
3659                 case NL80211_CHAN_WIDTH_20_NOHT:
3660                 case NL80211_CHAN_WIDTH_20:
3661                         break;
3662                 default:
3663                         return -EINVAL;
3664                 }
3665
3666                 /* changes into another band are not supported */
3667                 if (sdata->u.ibss.chandef.chan->band !=
3668                     params->chandef.chan->band)
3669                         return -EINVAL;
3670
3671                 /* see comments in the NL80211_IFTYPE_AP block */
3672                 if (params->count > 1) {
3673                         err = ieee80211_ibss_csa_beacon(sdata, params);
3674                         if (err < 0)
3675                                 return err;
3676                         *changed |= err;
3677                 }
3678
3679                 ieee80211_send_action_csa(sdata, params);
3680
3681                 break;
3682 #ifdef CONFIG_MAC80211_MESH
3683         case NL80211_IFTYPE_MESH_POINT: {
3684                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3685
3686                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3687                         return -EINVAL;
3688
3689                 /* changes into another band are not supported */
3690                 if (sdata->vif.bss_conf.chandef.chan->band !=
3691                     params->chandef.chan->band)
3692                         return -EINVAL;
3693
3694                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3695                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3696                         if (!ifmsh->pre_value)
3697                                 ifmsh->pre_value = 1;
3698                         else
3699                                 ifmsh->pre_value++;
3700                 }
3701
3702                 /* see comments in the NL80211_IFTYPE_AP block */
3703                 if (params->count > 1) {
3704                         err = ieee80211_mesh_csa_beacon(sdata, params);
3705                         if (err < 0) {
3706                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3707                                 return err;
3708                         }
3709                         *changed |= err;
3710                 }
3711
3712                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3713                         ieee80211_send_action_csa(sdata, params);
3714
3715                 break;
3716                 }
3717 #endif
3718         default:
3719                 return -EOPNOTSUPP;
3720         }
3721
3722         return 0;
3723 }
3724
3725 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data  *sdata)
3726 {
3727         sdata->vif.bss_conf.color_change_active = false;
3728
3729         ieee80211_free_next_beacon(&sdata->deflink);
3730
3731         cfg80211_color_change_aborted_notify(sdata->dev);
3732 }
3733
3734 static int
3735 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3736                            struct cfg80211_csa_settings *params)
3737 {
3738         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3739         struct ieee80211_local *local = sdata->local;
3740         struct ieee80211_channel_switch ch_switch;
3741         struct ieee80211_chanctx_conf *conf;
3742         struct ieee80211_chanctx *chanctx;
3743         u32 changed = 0;
3744         int err;
3745
3746         sdata_assert_lock(sdata);
3747         lockdep_assert_held(&local->mtx);
3748
3749         if (!list_empty(&local->roc_list) || local->scanning)
3750                 return -EBUSY;
3751
3752         if (sdata->wdev.cac_started)
3753                 return -EBUSY;
3754
3755         if (cfg80211_chandef_identical(&params->chandef,
3756                                        &sdata->vif.bss_conf.chandef))
3757                 return -EINVAL;
3758
3759         /* don't allow another channel switch if one is already active. */
3760         if (sdata->vif.bss_conf.csa_active)
3761                 return -EBUSY;
3762
3763         mutex_lock(&local->chanctx_mtx);
3764         conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
3765                                          lockdep_is_held(&local->chanctx_mtx));
3766         if (!conf) {
3767                 err = -EBUSY;
3768                 goto out;
3769         }
3770
3771         if (params->chandef.chan->freq_offset) {
3772                 /* this may work, but is untested */
3773                 err = -EOPNOTSUPP;
3774                 goto out;
3775         }
3776
3777         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3778
3779         ch_switch.timestamp = 0;
3780         ch_switch.device_timestamp = 0;
3781         ch_switch.block_tx = params->block_tx;
3782         ch_switch.chandef = params->chandef;
3783         ch_switch.count = params->count;
3784
3785         err = drv_pre_channel_switch(sdata, &ch_switch);
3786         if (err)
3787                 goto out;
3788
3789         err = ieee80211_link_reserve_chanctx(&sdata->deflink, &params->chandef,
3790                                              chanctx->mode,
3791                                              params->radar_required);
3792         if (err)
3793                 goto out;
3794
3795         /* if reservation is invalid then this will fail */
3796         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3797         if (err) {
3798                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3799                 goto out;
3800         }
3801
3802         /* if there is a color change in progress, abort it */
3803         if (sdata->vif.bss_conf.color_change_active)
3804                 ieee80211_color_change_abort(sdata);
3805
3806         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3807         if (err) {
3808                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3809                 goto out;
3810         }
3811
3812         sdata->deflink.csa_chandef = params->chandef;
3813         sdata->deflink.csa_block_tx = params->block_tx;
3814         sdata->vif.bss_conf.csa_active = true;
3815
3816         if (sdata->deflink.csa_block_tx)
3817                 ieee80211_stop_vif_queues(local, sdata,
3818                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3819
3820         cfg80211_ch_switch_started_notify(sdata->dev,
3821                                           &sdata->deflink.csa_chandef,
3822                                           params->count, params->block_tx);
3823
3824         if (changed) {
3825                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3826                                                   changed);
3827                 drv_channel_switch_beacon(sdata, &params->chandef);
3828         } else {
3829                 /* if the beacon didn't change, we can finalize immediately */
3830                 ieee80211_csa_finalize(sdata);
3831         }
3832
3833 out:
3834         mutex_unlock(&local->chanctx_mtx);
3835         return err;
3836 }
3837
3838 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3839                              struct cfg80211_csa_settings *params)
3840 {
3841         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3842         struct ieee80211_local *local = sdata->local;
3843         int err;
3844
3845         mutex_lock(&local->mtx);
3846         err = __ieee80211_channel_switch(wiphy, dev, params);
3847         mutex_unlock(&local->mtx);
3848
3849         return err;
3850 }
3851
3852 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3853 {
3854         lockdep_assert_held(&local->mtx);
3855
3856         local->roc_cookie_counter++;
3857
3858         /* wow, you wrapped 64 bits ... more likely a bug */
3859         if (WARN_ON(local->roc_cookie_counter == 0))
3860                 local->roc_cookie_counter++;
3861
3862         return local->roc_cookie_counter;
3863 }
3864
3865 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3866                              u64 *cookie, gfp_t gfp)
3867 {
3868         unsigned long spin_flags;
3869         struct sk_buff *ack_skb;
3870         int id;
3871
3872         ack_skb = skb_copy(skb, gfp);
3873         if (!ack_skb)
3874                 return -ENOMEM;
3875
3876         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3877         id = idr_alloc(&local->ack_status_frames, ack_skb,
3878                        1, 0x2000, GFP_ATOMIC);
3879         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3880
3881         if (id < 0) {
3882                 kfree_skb(ack_skb);
3883                 return -ENOMEM;
3884         }
3885
3886         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3887
3888         *cookie = ieee80211_mgmt_tx_cookie(local);
3889         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3890
3891         return 0;
3892 }
3893
3894 static void
3895 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
3896                                           struct wireless_dev *wdev,
3897                                           struct mgmt_frame_regs *upd)
3898 {
3899         struct ieee80211_local *local = wiphy_priv(wiphy);
3900         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3901         u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
3902         u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
3903         bool global_change, intf_change;
3904
3905         global_change =
3906                 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
3907                 (local->rx_mcast_action_reg !=
3908                  !!(upd->global_mcast_stypes & action_mask));
3909         local->probe_req_reg = upd->global_stypes & preq_mask;
3910         local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
3911
3912         intf_change = (sdata->vif.probe_req_reg !=
3913                        !!(upd->interface_stypes & preq_mask)) ||
3914                 (sdata->vif.rx_mcast_action_reg !=
3915                  !!(upd->interface_mcast_stypes & action_mask));
3916         sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
3917         sdata->vif.rx_mcast_action_reg =
3918                 upd->interface_mcast_stypes & action_mask;
3919
3920         if (!local->open_count)
3921                 return;
3922
3923         if (intf_change && ieee80211_sdata_running(sdata))
3924                 drv_config_iface_filter(local, sdata,
3925                                         sdata->vif.probe_req_reg ?
3926                                                 FIF_PROBE_REQ : 0,
3927                                         FIF_PROBE_REQ);
3928
3929         if (global_change)
3930                 ieee80211_configure_filter(local);
3931 }
3932
3933 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3934 {
3935         struct ieee80211_local *local = wiphy_priv(wiphy);
3936
3937         if (local->started)
3938                 return -EOPNOTSUPP;
3939
3940         return drv_set_antenna(local, tx_ant, rx_ant);
3941 }
3942
3943 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3944 {
3945         struct ieee80211_local *local = wiphy_priv(wiphy);
3946
3947         return drv_get_antenna(local, tx_ant, rx_ant);
3948 }
3949
3950 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3951                                     struct net_device *dev,
3952                                     struct cfg80211_gtk_rekey_data *data)
3953 {
3954         struct ieee80211_local *local = wiphy_priv(wiphy);
3955         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3956
3957         if (!local->ops->set_rekey_data)
3958                 return -EOPNOTSUPP;
3959
3960         drv_set_rekey_data(local, sdata, data);
3961
3962         return 0;
3963 }
3964
3965 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3966                                   const u8 *peer, u64 *cookie)
3967 {
3968         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3969         struct ieee80211_local *local = sdata->local;
3970         struct ieee80211_qos_hdr *nullfunc;
3971         struct sk_buff *skb;
3972         int size = sizeof(*nullfunc);
3973         __le16 fc;
3974         bool qos;
3975         struct ieee80211_tx_info *info;
3976         struct sta_info *sta;
3977         struct ieee80211_chanctx_conf *chanctx_conf;
3978         enum nl80211_band band;
3979         int ret;
3980
3981         /* the lock is needed to assign the cookie later */
3982         mutex_lock(&local->mtx);
3983
3984         rcu_read_lock();
3985         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
3986         if (WARN_ON(!chanctx_conf)) {
3987                 ret = -EINVAL;
3988                 goto unlock;
3989         }
3990         band = chanctx_conf->def.chan->band;
3991         sta = sta_info_get_bss(sdata, peer);
3992         if (sta) {
3993                 qos = sta->sta.wme;
3994         } else {
3995                 ret = -ENOLINK;
3996                 goto unlock;
3997         }
3998
3999         if (qos) {
4000                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4001                                  IEEE80211_STYPE_QOS_NULLFUNC |
4002                                  IEEE80211_FCTL_FROMDS);
4003         } else {
4004                 size -= 2;
4005                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4006                                  IEEE80211_STYPE_NULLFUNC |
4007                                  IEEE80211_FCTL_FROMDS);
4008         }
4009
4010         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4011         if (!skb) {
4012                 ret = -ENOMEM;
4013                 goto unlock;
4014         }
4015
4016         skb->dev = dev;
4017
4018         skb_reserve(skb, local->hw.extra_tx_headroom);
4019
4020         nullfunc = skb_put(skb, size);
4021         nullfunc->frame_control = fc;
4022         nullfunc->duration_id = 0;
4023         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4024         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4025         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4026         nullfunc->seq_ctrl = 0;
4027
4028         info = IEEE80211_SKB_CB(skb);
4029
4030         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4031                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4032         info->band = band;
4033
4034         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4035         skb->priority = 7;
4036         if (qos)
4037                 nullfunc->qos_ctrl = cpu_to_le16(7);
4038
4039         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4040         if (ret) {
4041                 kfree_skb(skb);
4042                 goto unlock;
4043         }
4044
4045         local_bh_disable();
4046         ieee80211_xmit(sdata, sta, skb);
4047         local_bh_enable();
4048
4049         ret = 0;
4050 unlock:
4051         rcu_read_unlock();
4052         mutex_unlock(&local->mtx);
4053
4054         return ret;
4055 }
4056
4057 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4058                                      struct wireless_dev *wdev,
4059                                      unsigned int link_id,
4060                                      struct cfg80211_chan_def *chandef)
4061 {
4062         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4063         struct ieee80211_local *local = wiphy_priv(wiphy);
4064         struct ieee80211_chanctx_conf *chanctx_conf;
4065         struct ieee80211_link_data *link;
4066         int ret = -ENODATA;
4067
4068         rcu_read_lock();
4069         link = rcu_dereference(sdata->link[link_id]);
4070         if (!link) {
4071                 ret = -ENOLINK;
4072                 goto out;
4073         }
4074
4075         chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4076         if (chanctx_conf) {
4077                 *chandef = link->conf->chandef;
4078                 ret = 0;
4079         } else if (local->open_count > 0 &&
4080                    local->open_count == local->monitors &&
4081                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4082                 if (local->use_chanctx)
4083                         *chandef = local->monitor_chandef;
4084                 else
4085                         *chandef = local->_oper_chandef;
4086                 ret = 0;
4087         }
4088 out:
4089         rcu_read_unlock();
4090
4091         return ret;
4092 }
4093
4094 #ifdef CONFIG_PM
4095 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4096 {
4097         drv_set_wakeup(wiphy_priv(wiphy), enabled);
4098 }
4099 #endif
4100
4101 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4102                                  struct net_device *dev,
4103                                  struct cfg80211_qos_map *qos_map)
4104 {
4105         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4106         struct mac80211_qos_map *new_qos_map, *old_qos_map;
4107
4108         if (qos_map) {
4109                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4110                 if (!new_qos_map)
4111                         return -ENOMEM;
4112                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4113         } else {
4114                 /* A NULL qos_map was passed to disable QoS mapping */
4115                 new_qos_map = NULL;
4116         }
4117
4118         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4119         rcu_assign_pointer(sdata->qos_map, new_qos_map);
4120         if (old_qos_map)
4121                 kfree_rcu(old_qos_map, rcu_head);
4122
4123         return 0;
4124 }
4125
4126 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4127                                       struct net_device *dev,
4128                                       unsigned int link_id,
4129                                       struct cfg80211_chan_def *chandef)
4130 {
4131         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4132         struct ieee80211_link_data *link;
4133         int ret;
4134         u32 changed = 0;
4135
4136         link = sdata_dereference(sdata->link[link_id], sdata);
4137
4138         ret = ieee80211_link_change_bandwidth(link, chandef, &changed);
4139         if (ret == 0)
4140                 ieee80211_link_info_change_notify(sdata, link, changed);
4141
4142         return ret;
4143 }
4144
4145 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4146                                u8 tsid, const u8 *peer, u8 up,
4147                                u16 admitted_time)
4148 {
4149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4150         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4151         int ac = ieee802_1d_to_ac[up];
4152
4153         if (sdata->vif.type != NL80211_IFTYPE_STATION)
4154                 return -EOPNOTSUPP;
4155
4156         if (!(sdata->wmm_acm & BIT(up)))
4157                 return -EINVAL;
4158
4159         if (ifmgd->tx_tspec[ac].admitted_time)
4160                 return -EBUSY;
4161
4162         if (admitted_time) {
4163                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4164                 ifmgd->tx_tspec[ac].tsid = tsid;
4165                 ifmgd->tx_tspec[ac].up = up;
4166         }
4167
4168         return 0;
4169 }
4170
4171 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4172                                u8 tsid, const u8 *peer)
4173 {
4174         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4175         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4176         struct ieee80211_local *local = wiphy_priv(wiphy);
4177         int ac;
4178
4179         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4180                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4181
4182                 /* skip unused entries */
4183                 if (!tx_tspec->admitted_time)
4184                         continue;
4185
4186                 if (tx_tspec->tsid != tsid)
4187                         continue;
4188
4189                 /* due to this new packets will be reassigned to non-ACM ACs */
4190                 tx_tspec->up = -1;
4191
4192                 /* Make sure that all packets have been sent to avoid to
4193                  * restore the QoS params on packets that are still on the
4194                  * queues.
4195                  */
4196                 synchronize_net();
4197                 ieee80211_flush_queues(local, sdata, false);
4198
4199                 /* restore the normal QoS parameters
4200                  * (unconditionally to avoid races)
4201                  */
4202                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4203                 tx_tspec->downgraded = false;
4204                 ieee80211_sta_handle_tspec_ac_params(sdata);
4205
4206                 /* finally clear all the data */
4207                 memset(tx_tspec, 0, sizeof(*tx_tspec));
4208
4209                 return 0;
4210         }
4211
4212         return -ENOENT;
4213 }
4214
4215 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4216                                    u8 inst_id,
4217                                    enum nl80211_nan_func_term_reason reason,
4218                                    gfp_t gfp)
4219 {
4220         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4221         struct cfg80211_nan_func *func;
4222         u64 cookie;
4223
4224         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4225                 return;
4226
4227         spin_lock_bh(&sdata->u.nan.func_lock);
4228
4229         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4230         if (WARN_ON(!func)) {
4231                 spin_unlock_bh(&sdata->u.nan.func_lock);
4232                 return;
4233         }
4234
4235         cookie = func->cookie;
4236         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4237
4238         spin_unlock_bh(&sdata->u.nan.func_lock);
4239
4240         cfg80211_free_nan_func(func);
4241
4242         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4243                                      reason, cookie, gfp);
4244 }
4245 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4246
4247 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4248                               struct cfg80211_nan_match_params *match,
4249                               gfp_t gfp)
4250 {
4251         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4252         struct cfg80211_nan_func *func;
4253
4254         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4255                 return;
4256
4257         spin_lock_bh(&sdata->u.nan.func_lock);
4258
4259         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
4260         if (WARN_ON(!func)) {
4261                 spin_unlock_bh(&sdata->u.nan.func_lock);
4262                 return;
4263         }
4264         match->cookie = func->cookie;
4265
4266         spin_unlock_bh(&sdata->u.nan.func_lock);
4267
4268         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4269 }
4270 EXPORT_SYMBOL(ieee80211_nan_func_match);
4271
4272 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4273                                               struct net_device *dev,
4274                                               const bool enabled)
4275 {
4276         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4277
4278         sdata->u.ap.multicast_to_unicast = enabled;
4279
4280         return 0;
4281 }
4282
4283 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4284                               struct txq_info *txqi)
4285 {
4286         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4287                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4288                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4289         }
4290
4291         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4292                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4293                 txqstats->backlog_packets = txqi->tin.backlog_packets;
4294         }
4295
4296         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4297                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4298                 txqstats->flows = txqi->tin.flows;
4299         }
4300
4301         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4302                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4303                 txqstats->drops = txqi->cstats.drop_count;
4304         }
4305
4306         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4307                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4308                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4309         }
4310
4311         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4312                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4313                 txqstats->overlimit = txqi->tin.overlimit;
4314         }
4315
4316         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4317                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4318                 txqstats->collisions = txqi->tin.collisions;
4319         }
4320
4321         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4322                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4323                 txqstats->tx_bytes = txqi->tin.tx_bytes;
4324         }
4325
4326         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4327                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4328                 txqstats->tx_packets = txqi->tin.tx_packets;
4329         }
4330 }
4331
4332 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4333                                    struct wireless_dev *wdev,
4334                                    struct cfg80211_txq_stats *txqstats)
4335 {
4336         struct ieee80211_local *local = wiphy_priv(wiphy);
4337         struct ieee80211_sub_if_data *sdata;
4338         int ret = 0;
4339
4340         if (!local->ops->wake_tx_queue)
4341                 return 1;
4342
4343         spin_lock_bh(&local->fq.lock);
4344         rcu_read_lock();
4345
4346         if (wdev) {
4347                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4348                 if (!sdata->vif.txq) {
4349                         ret = 1;
4350                         goto out;
4351                 }
4352                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4353         } else {
4354                 /* phy stats */
4355                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4356                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4357                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4358                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4359                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
4360                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4361                 txqstats->backlog_packets = local->fq.backlog;
4362                 txqstats->backlog_bytes = local->fq.memory_usage;
4363                 txqstats->overlimit = local->fq.overlimit;
4364                 txqstats->overmemory = local->fq.overmemory;
4365                 txqstats->collisions = local->fq.collisions;
4366                 txqstats->max_flows = local->fq.flows_cnt;
4367         }
4368
4369 out:
4370         rcu_read_unlock();
4371         spin_unlock_bh(&local->fq.lock);
4372
4373         return ret;
4374 }
4375
4376 static int
4377 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4378                                   struct net_device *dev,
4379                                   struct cfg80211_ftm_responder_stats *ftm_stats)
4380 {
4381         struct ieee80211_local *local = wiphy_priv(wiphy);
4382         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4383
4384         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4385 }
4386
4387 static int
4388 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4389                      struct cfg80211_pmsr_request *request)
4390 {
4391         struct ieee80211_local *local = wiphy_priv(wiphy);
4392         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4393
4394         return drv_start_pmsr(local, sdata, request);
4395 }
4396
4397 static void
4398 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4399                      struct cfg80211_pmsr_request *request)
4400 {
4401         struct ieee80211_local *local = wiphy_priv(wiphy);
4402         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4403
4404         return drv_abort_pmsr(local, sdata, request);
4405 }
4406
4407 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4408                                     struct net_device *dev,
4409                                     struct cfg80211_tid_config *tid_conf)
4410 {
4411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4412         struct sta_info *sta;
4413         int ret;
4414
4415         if (!sdata->local->ops->set_tid_config)
4416                 return -EOPNOTSUPP;
4417
4418         if (!tid_conf->peer)
4419                 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4420
4421         mutex_lock(&sdata->local->sta_mtx);
4422         sta = sta_info_get_bss(sdata, tid_conf->peer);
4423         if (!sta) {
4424                 mutex_unlock(&sdata->local->sta_mtx);
4425                 return -ENOENT;
4426         }
4427
4428         ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4429         mutex_unlock(&sdata->local->sta_mtx);
4430
4431         return ret;
4432 }
4433
4434 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4435                                       struct net_device *dev,
4436                                       const u8 *peer, u8 tids)
4437 {
4438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4439         struct sta_info *sta;
4440         int ret;
4441
4442         if (!sdata->local->ops->reset_tid_config)
4443                 return -EOPNOTSUPP;
4444
4445         if (!peer)
4446                 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4447
4448         mutex_lock(&sdata->local->sta_mtx);
4449         sta = sta_info_get_bss(sdata, peer);
4450         if (!sta) {
4451                 mutex_unlock(&sdata->local->sta_mtx);
4452                 return -ENOENT;
4453         }
4454
4455         ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4456         mutex_unlock(&sdata->local->sta_mtx);
4457
4458         return ret;
4459 }
4460
4461 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4462                                    struct cfg80211_sar_specs *sar)
4463 {
4464         struct ieee80211_local *local = wiphy_priv(wiphy);
4465
4466         if (!local->ops->set_sar_specs)
4467                 return -EOPNOTSUPP;
4468
4469         return local->ops->set_sar_specs(&local->hw, sar);
4470 }
4471
4472 static int
4473 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4474                                         u32 *changed)
4475 {
4476         switch (sdata->vif.type) {
4477         case NL80211_IFTYPE_AP: {
4478                 int ret;
4479
4480                 if (!sdata->deflink.u.ap.next_beacon)
4481                         return -EINVAL;
4482
4483                 ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4484                                               sdata->deflink.u.ap.next_beacon,
4485                                               NULL, NULL);
4486                 ieee80211_free_next_beacon(&sdata->deflink);
4487
4488                 if (ret < 0)
4489                         return ret;
4490
4491                 *changed |= ret;
4492                 break;
4493         }
4494         default:
4495                 WARN_ON_ONCE(1);
4496                 return -EINVAL;
4497         }
4498
4499         return 0;
4500 }
4501
4502 static int
4503 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4504                                   struct cfg80211_color_change_settings *params,
4505                                   u32 *changed)
4506 {
4507         struct ieee80211_color_change_settings color_change = {};
4508         int err;
4509
4510         switch (sdata->vif.type) {
4511         case NL80211_IFTYPE_AP:
4512                 sdata->deflink.u.ap.next_beacon =
4513                         cfg80211_beacon_dup(&params->beacon_next);
4514                 if (!sdata->deflink.u.ap.next_beacon)
4515                         return -ENOMEM;
4516
4517                 if (params->count <= 1)
4518                         break;
4519
4520                 color_change.counter_offset_beacon =
4521                         params->counter_offset_beacon;
4522                 color_change.counter_offset_presp =
4523                         params->counter_offset_presp;
4524                 color_change.count = params->count;
4525
4526                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4527                                               &params->beacon_color_change,
4528                                               NULL, &color_change);
4529                 if (err < 0) {
4530                         ieee80211_free_next_beacon(&sdata->deflink);
4531                         return err;
4532                 }
4533                 *changed |= err;
4534                 break;
4535         default:
4536                 return -EOPNOTSUPP;
4537         }
4538
4539         return 0;
4540 }
4541
4542 static void
4543 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4544                                          u8 color, int enable, u32 changed)
4545 {
4546         sdata->vif.bss_conf.he_bss_color.color = color;
4547         sdata->vif.bss_conf.he_bss_color.enabled = enable;
4548         changed |= BSS_CHANGED_HE_BSS_COLOR;
4549
4550         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4551
4552         if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4553                 struct ieee80211_sub_if_data *child;
4554
4555                 mutex_lock(&sdata->local->iflist_mtx);
4556                 list_for_each_entry(child, &sdata->local->interfaces, list) {
4557                         if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4558                                 child->vif.bss_conf.he_bss_color.color = color;
4559                                 child->vif.bss_conf.he_bss_color.enabled = enable;
4560                                 ieee80211_link_info_change_notify(child,
4561                                                                   &child->deflink,
4562                                                                   BSS_CHANGED_HE_BSS_COLOR);
4563                         }
4564                 }
4565                 mutex_unlock(&sdata->local->iflist_mtx);
4566         }
4567 }
4568
4569 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4570 {
4571         struct ieee80211_local *local = sdata->local;
4572         u32 changed = 0;
4573         int err;
4574
4575         sdata_assert_lock(sdata);
4576         lockdep_assert_held(&local->mtx);
4577
4578         sdata->vif.bss_conf.color_change_active = false;
4579
4580         err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4581         if (err) {
4582                 cfg80211_color_change_aborted_notify(sdata->dev);
4583                 return err;
4584         }
4585
4586         ieee80211_color_change_bss_config_notify(sdata,
4587                                                  sdata->vif.bss_conf.color_change_color,
4588                                                  1, changed);
4589         cfg80211_color_change_notify(sdata->dev);
4590
4591         return 0;
4592 }
4593
4594 void ieee80211_color_change_finalize_work(struct work_struct *work)
4595 {
4596         struct ieee80211_sub_if_data *sdata =
4597                 container_of(work, struct ieee80211_sub_if_data,
4598                              deflink.color_change_finalize_work);
4599         struct ieee80211_local *local = sdata->local;
4600
4601         sdata_lock(sdata);
4602         mutex_lock(&local->mtx);
4603
4604         /* AP might have been stopped while waiting for the lock. */
4605         if (!sdata->vif.bss_conf.color_change_active)
4606                 goto unlock;
4607
4608         if (!ieee80211_sdata_running(sdata))
4609                 goto unlock;
4610
4611         ieee80211_color_change_finalize(sdata);
4612
4613 unlock:
4614         mutex_unlock(&local->mtx);
4615         sdata_unlock(sdata);
4616 }
4617
4618 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4619 {
4620         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4621
4622         ieee80211_queue_work(&sdata->local->hw,
4623                              &sdata->deflink.color_change_finalize_work);
4624 }
4625 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4626
4627 void
4628 ieeee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4629                                        u64 color_bitmap, gfp_t gfp)
4630 {
4631         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4632
4633         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4634                 return;
4635
4636         cfg80211_obss_color_collision_notify(sdata->dev, color_bitmap, gfp);
4637 }
4638 EXPORT_SYMBOL_GPL(ieeee80211_obss_color_collision_notify);
4639
4640 static int
4641 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4642                        struct cfg80211_color_change_settings *params)
4643 {
4644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4645         struct ieee80211_local *local = sdata->local;
4646         u32 changed = 0;
4647         int err;
4648
4649         sdata_assert_lock(sdata);
4650
4651         if (sdata->vif.bss_conf.nontransmitted)
4652                 return -EINVAL;
4653
4654         mutex_lock(&local->mtx);
4655
4656         /* don't allow another color change if one is already active or if csa
4657          * is active
4658          */
4659         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4660                 err = -EBUSY;
4661                 goto out;
4662         }
4663
4664         err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4665         if (err)
4666                 goto out;
4667
4668         sdata->vif.bss_conf.color_change_active = true;
4669         sdata->vif.bss_conf.color_change_color = params->color;
4670
4671         cfg80211_color_change_started_notify(sdata->dev, params->count);
4672
4673         if (changed)
4674                 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4675         else
4676                 /* if the beacon didn't change, we can finalize immediately */
4677                 ieee80211_color_change_finalize(sdata);
4678
4679 out:
4680         mutex_unlock(&local->mtx);
4681
4682         return err;
4683 }
4684
4685 static int
4686 ieee80211_set_radar_background(struct wiphy *wiphy,
4687                                struct cfg80211_chan_def *chandef)
4688 {
4689         struct ieee80211_local *local = wiphy_priv(wiphy);
4690
4691         if (!local->ops->set_radar_background)
4692                 return -EOPNOTSUPP;
4693
4694         return local->ops->set_radar_background(&local->hw, chandef);
4695 }
4696
4697 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4698                                    struct wireless_dev *wdev,
4699                                    unsigned int link_id)
4700 {
4701         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4702
4703         return ieee80211_vif_set_links(sdata, wdev->valid_links);
4704 }
4705
4706 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4707                                     struct wireless_dev *wdev,
4708                                     unsigned int link_id)
4709 {
4710         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4711
4712         ieee80211_vif_set_links(sdata, wdev->valid_links);
4713 }
4714
4715 static int sta_add_link_station(struct ieee80211_local *local,
4716                                 struct ieee80211_sub_if_data *sdata,
4717                                 struct link_station_parameters *params)
4718 {
4719         struct sta_info *sta;
4720         int ret;
4721
4722         sta = sta_info_get_bss(sdata, params->mld_mac);
4723         if (!sta)
4724                 return -ENOENT;
4725
4726         if (!sta->sta.valid_links)
4727                 return -EINVAL;
4728
4729         if (sta->sta.valid_links & BIT(params->link_id))
4730                 return -EALREADY;
4731
4732         ret = ieee80211_sta_allocate_link(sta, params->link_id);
4733         if (ret)
4734                 return ret;
4735
4736         ret = sta_link_apply_parameters(local, sta, true, params);
4737         if (ret) {
4738                 ieee80211_sta_free_link(sta, params->link_id);
4739                 return ret;
4740         }
4741
4742         /* ieee80211_sta_activate_link frees the link upon failure */
4743         return ieee80211_sta_activate_link(sta, params->link_id);
4744 }
4745
4746 static int
4747 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4748                            struct link_station_parameters *params)
4749 {
4750         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4751         struct ieee80211_local *local = wiphy_priv(wiphy);
4752         int ret;
4753
4754         mutex_lock(&sdata->local->sta_mtx);
4755         ret = sta_add_link_station(local, sdata, params);
4756         mutex_unlock(&sdata->local->sta_mtx);
4757
4758         return ret;
4759 }
4760
4761 static int sta_mod_link_station(struct ieee80211_local *local,
4762                                 struct ieee80211_sub_if_data *sdata,
4763                                 struct link_station_parameters *params)
4764 {
4765         struct sta_info *sta;
4766
4767         sta = sta_info_get_bss(sdata, params->mld_mac);
4768         if (!sta)
4769                 return -ENOENT;
4770
4771         if (!(sta->sta.valid_links & BIT(params->link_id)))
4772                 return -EINVAL;
4773
4774         return sta_link_apply_parameters(local, sta, false, params);
4775 }
4776
4777 static int
4778 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4779                            struct link_station_parameters *params)
4780 {
4781         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4782         struct ieee80211_local *local = wiphy_priv(wiphy);
4783         int ret;
4784
4785         mutex_lock(&sdata->local->sta_mtx);
4786         ret = sta_mod_link_station(local, sdata, params);
4787         mutex_unlock(&sdata->local->sta_mtx);
4788
4789         return ret;
4790 }
4791
4792 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4793                                 struct link_station_del_parameters *params)
4794 {
4795         struct sta_info *sta;
4796
4797         sta = sta_info_get_bss(sdata, params->mld_mac);
4798         if (!sta)
4799                 return -ENOENT;
4800
4801         if (!(sta->sta.valid_links & BIT(params->link_id)))
4802                 return -EINVAL;
4803
4804         /* must not create a STA without links */
4805         if (sta->sta.valid_links == BIT(params->link_id))
4806                 return -EINVAL;
4807
4808         ieee80211_sta_remove_link(sta, params->link_id);
4809
4810         return 0;
4811 }
4812
4813 static int
4814 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
4815                            struct link_station_del_parameters *params)
4816 {
4817         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4818         int ret;
4819
4820         mutex_lock(&sdata->local->sta_mtx);
4821         ret = sta_del_link_station(sdata, params);
4822         mutex_unlock(&sdata->local->sta_mtx);
4823
4824         return ret;
4825 }
4826
4827 const struct cfg80211_ops mac80211_config_ops = {
4828         .add_virtual_intf = ieee80211_add_iface,
4829         .del_virtual_intf = ieee80211_del_iface,
4830         .change_virtual_intf = ieee80211_change_iface,
4831         .start_p2p_device = ieee80211_start_p2p_device,
4832         .stop_p2p_device = ieee80211_stop_p2p_device,
4833         .add_key = ieee80211_add_key,
4834         .del_key = ieee80211_del_key,
4835         .get_key = ieee80211_get_key,
4836         .set_default_key = ieee80211_config_default_key,
4837         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
4838         .set_default_beacon_key = ieee80211_config_default_beacon_key,
4839         .start_ap = ieee80211_start_ap,
4840         .change_beacon = ieee80211_change_beacon,
4841         .stop_ap = ieee80211_stop_ap,
4842         .add_station = ieee80211_add_station,
4843         .del_station = ieee80211_del_station,
4844         .change_station = ieee80211_change_station,
4845         .get_station = ieee80211_get_station,
4846         .dump_station = ieee80211_dump_station,
4847         .dump_survey = ieee80211_dump_survey,
4848 #ifdef CONFIG_MAC80211_MESH
4849         .add_mpath = ieee80211_add_mpath,
4850         .del_mpath = ieee80211_del_mpath,
4851         .change_mpath = ieee80211_change_mpath,
4852         .get_mpath = ieee80211_get_mpath,
4853         .dump_mpath = ieee80211_dump_mpath,
4854         .get_mpp = ieee80211_get_mpp,
4855         .dump_mpp = ieee80211_dump_mpp,
4856         .update_mesh_config = ieee80211_update_mesh_config,
4857         .get_mesh_config = ieee80211_get_mesh_config,
4858         .join_mesh = ieee80211_join_mesh,
4859         .leave_mesh = ieee80211_leave_mesh,
4860 #endif
4861         .join_ocb = ieee80211_join_ocb,
4862         .leave_ocb = ieee80211_leave_ocb,
4863         .change_bss = ieee80211_change_bss,
4864         .set_txq_params = ieee80211_set_txq_params,
4865         .set_monitor_channel = ieee80211_set_monitor_channel,
4866         .suspend = ieee80211_suspend,
4867         .resume = ieee80211_resume,
4868         .scan = ieee80211_scan,
4869         .abort_scan = ieee80211_abort_scan,
4870         .sched_scan_start = ieee80211_sched_scan_start,
4871         .sched_scan_stop = ieee80211_sched_scan_stop,
4872         .auth = ieee80211_auth,
4873         .assoc = ieee80211_assoc,
4874         .deauth = ieee80211_deauth,
4875         .disassoc = ieee80211_disassoc,
4876         .join_ibss = ieee80211_join_ibss,
4877         .leave_ibss = ieee80211_leave_ibss,
4878         .set_mcast_rate = ieee80211_set_mcast_rate,
4879         .set_wiphy_params = ieee80211_set_wiphy_params,
4880         .set_tx_power = ieee80211_set_tx_power,
4881         .get_tx_power = ieee80211_get_tx_power,
4882         .rfkill_poll = ieee80211_rfkill_poll,
4883         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
4884         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
4885         .set_power_mgmt = ieee80211_set_power_mgmt,
4886         .set_bitrate_mask = ieee80211_set_bitrate_mask,
4887         .remain_on_channel = ieee80211_remain_on_channel,
4888         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
4889         .mgmt_tx = ieee80211_mgmt_tx,
4890         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
4891         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
4892         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
4893         .update_mgmt_frame_registrations =
4894                 ieee80211_update_mgmt_frame_registrations,
4895         .set_antenna = ieee80211_set_antenna,
4896         .get_antenna = ieee80211_get_antenna,
4897         .set_rekey_data = ieee80211_set_rekey_data,
4898         .tdls_oper = ieee80211_tdls_oper,
4899         .tdls_mgmt = ieee80211_tdls_mgmt,
4900         .tdls_channel_switch = ieee80211_tdls_channel_switch,
4901         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
4902         .probe_client = ieee80211_probe_client,
4903         .set_noack_map = ieee80211_set_noack_map,
4904 #ifdef CONFIG_PM
4905         .set_wakeup = ieee80211_set_wakeup,
4906 #endif
4907         .get_channel = ieee80211_cfg_get_channel,
4908         .start_radar_detection = ieee80211_start_radar_detection,
4909         .end_cac = ieee80211_end_cac,
4910         .channel_switch = ieee80211_channel_switch,
4911         .set_qos_map = ieee80211_set_qos_map,
4912         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
4913         .add_tx_ts = ieee80211_add_tx_ts,
4914         .del_tx_ts = ieee80211_del_tx_ts,
4915         .start_nan = ieee80211_start_nan,
4916         .stop_nan = ieee80211_stop_nan,
4917         .nan_change_conf = ieee80211_nan_change_conf,
4918         .add_nan_func = ieee80211_add_nan_func,
4919         .del_nan_func = ieee80211_del_nan_func,
4920         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
4921         .tx_control_port = ieee80211_tx_control_port,
4922         .get_txq_stats = ieee80211_get_txq_stats,
4923         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
4924         .start_pmsr = ieee80211_start_pmsr,
4925         .abort_pmsr = ieee80211_abort_pmsr,
4926         .probe_mesh_link = ieee80211_probe_mesh_link,
4927         .set_tid_config = ieee80211_set_tid_config,
4928         .reset_tid_config = ieee80211_reset_tid_config,
4929         .set_sar_specs = ieee80211_set_sar_specs,
4930         .color_change = ieee80211_color_change,
4931         .set_radar_background = ieee80211_set_radar_background,
4932         .add_intf_link = ieee80211_add_intf_link,
4933         .del_intf_link = ieee80211_del_intf_link,
4934         .add_link_station = ieee80211_add_link_station,
4935         .mod_link_station = ieee80211_mod_link_station,
4936         .del_link_station = ieee80211_del_link_station,
4937 };