net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2016 Intel Deutschland GmbH
   7  *
   8  * This file is GPLv2 as found in COPYING.
   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/if_ether.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "driver-ops.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr.flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0) {
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71                 ieee80211_check_fast_rx_iface(sdata);
  72         } else if (type == NL80211_IFTYPE_STATION &&
  73                    params && params->use_4addr >= 0) {
  74                 sdata->u.mgd.use_4addr = params->use_4addr;
  75         }
  76
  77         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
  78                 struct ieee80211_local *local = sdata->local;
  79                 struct ieee80211_sub_if_data *monitor_sdata;
  80                 u32 mu_mntr_cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
  81
  82                 monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83                 if (monitor_sdata &&
  84                     wiphy_ext_feature_isset(wiphy, mu_mntr_cap_flag)) {
  85                         memcpy(monitor_sdata->vif.bss_conf.mu_group.membership,
  86                                params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  87                         memcpy(monitor_sdata->vif.bss_conf.mu_group.position,
  88                                params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  89                                WLAN_USER_POSITION_LEN);
  90                         monitor_sdata->vif.mu_mimo_owner = true;
  91                         ieee80211_bss_info_change_notify(monitor_sdata,
  92                                                          BSS_CHANGED_MU_GROUPS);
  93
  94                         ether_addr_copy(monitor_sdata->u.mntr.mu_follow_addr,
  95                                         params->macaddr);
  96                 }
  97
  98                 if (!flags)
  99                         return 0;
 100
 101                 if (ieee80211_sdata_running(sdata)) {
 102                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
 103                                    MONITOR_FLAG_ACTIVE;
 104
 105                         /*
 106                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
 107                          * MONITOR_FLAG_ACTIVE to be changed while the
 108                          * interface is up.
 109                          * Else we would need to add a lot of cruft
 110                          * to update everything:
 111                          *      cooked_mntrs, monitor and all fif_* counters
 112                          *      reconfigure hardware
 113                          */
 114                         if ((*flags & mask) != (sdata->u.mntr.flags & mask))
 115                                 return -EBUSY;
 116
 117                         ieee80211_adjust_monitor_flags(sdata, -1);
 118                         sdata->u.mntr.flags = *flags;
 119                         ieee80211_adjust_monitor_flags(sdata, 1);
 120
 121                         ieee80211_configure_filter(local);
 122                 } else {
 123                         /*
 124                          * Because the interface is down, ieee80211_do_stop
 125                          * and ieee80211_do_open take care of "everything"
 126                          * mentioned in the comment above.
 127                          */
 128                         sdata->u.mntr.flags = *flags;
 129                 }
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 136                                       struct wireless_dev *wdev)
 137 {
 138         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 139         int ret;
 140
 141         mutex_lock(&sdata->local->chanctx_mtx);
 142         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 143         mutex_unlock(&sdata->local->chanctx_mtx);
 144         if (ret < 0)
 145                 return ret;
 146
 147         return ieee80211_do_open(wdev, true);
 148 }
 149
 150 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 151                                       struct wireless_dev *wdev)
 152 {
 153         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 154 }
 155
 156 static int ieee80211_start_nan(struct wiphy *wiphy,
 157                                struct wireless_dev *wdev,
 158                                struct cfg80211_nan_conf *conf)
 159 {
 160         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 161         int ret;
 162
 163         mutex_lock(&sdata->local->chanctx_mtx);
 164         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 165         mutex_unlock(&sdata->local->chanctx_mtx);
 166         if (ret < 0)
 167                 return ret;
 168
 169         ret = ieee80211_do_open(wdev, true);
 170         if (ret)
 171                 return ret;
 172
 173         ret = drv_start_nan(sdata->local, sdata, conf);
 174         if (ret)
 175                 ieee80211_sdata_stop(sdata);
 176
 177         sdata->u.nan.conf = *conf;
 178
 179         return ret;
 180 }
 181
 182 static void ieee80211_stop_nan(struct wiphy *wiphy,
 183                                struct wireless_dev *wdev)
 184 {
 185         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 186
 187         drv_stop_nan(sdata->local, sdata);
 188         ieee80211_sdata_stop(sdata);
 189 }
 190
 191 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 192                                      struct wireless_dev *wdev,
 193                                      struct cfg80211_nan_conf *conf,
 194                                      u32 changes)
 195 {
 196         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 197         struct cfg80211_nan_conf new_conf;
 198         int ret = 0;
 199
 200         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 201                 return -EOPNOTSUPP;
 202
 203         if (!ieee80211_sdata_running(sdata))
 204                 return -ENETDOWN;
 205
 206         new_conf = sdata->u.nan.conf;
 207
 208         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 209                 new_conf.master_pref = conf->master_pref;
 210
 211         if (changes & CFG80211_NAN_CONF_CHANGED_DUAL)
 212                 new_conf.dual = conf->dual;
 213
 214         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 215         if (!ret)
 216                 sdata->u.nan.conf = new_conf;
 217
 218         return ret;
 219 }
 220
 221 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 222                                   struct wireless_dev *wdev,
 223                                   struct cfg80211_nan_func *nan_func)
 224 {
 225         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 226         int ret;
 227
 228         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 229                 return -EOPNOTSUPP;
 230
 231         if (!ieee80211_sdata_running(sdata))
 232                 return -ENETDOWN;
 233
 234         spin_lock_bh(&sdata->u.nan.func_lock);
 235
 236         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 237                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 238                         GFP_ATOMIC);
 239         spin_unlock_bh(&sdata->u.nan.func_lock);
 240
 241         if (ret < 0)
 242                 return ret;
 243
 244         nan_func->instance_id = ret;
 245
 246         WARN_ON(nan_func->instance_id == 0);
 247
 248         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 249         if (ret) {
 250                 spin_lock_bh(&sdata->u.nan.func_lock);
 251                 idr_remove(&sdata->u.nan.function_inst_ids,
 252                            nan_func->instance_id);
 253                 spin_unlock_bh(&sdata->u.nan.func_lock);
 254         }
 255
 256         return ret;
 257 }
 258
 259 static struct cfg80211_nan_func *
 260 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 261                                   u64 cookie)
 262 {
 263         struct cfg80211_nan_func *func;
 264         int id;
 265
 266         lockdep_assert_held(&sdata->u.nan.func_lock);
 267
 268         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 269                 if (func->cookie == cookie)
 270                         return func;
 271         }
 272
 273         return NULL;
 274 }
 275
 276 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 277                                   struct wireless_dev *wdev, u64 cookie)
 278 {
 279         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 280         struct cfg80211_nan_func *func;
 281         u8 instance_id = 0;
 282
 283         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 284             !ieee80211_sdata_running(sdata))
 285                 return;
 286
 287         spin_lock_bh(&sdata->u.nan.func_lock);
 288
 289         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 290         if (func)
 291                 instance_id = func->instance_id;
 292
 293         spin_unlock_bh(&sdata->u.nan.func_lock);
 294
 295         if (instance_id)
 296                 drv_del_nan_func(sdata->local, sdata, instance_id);
 297 }
 298
 299 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 300                                   struct net_device *dev,
 301                                   u16 noack_map)
 302 {
 303         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 304
 305         sdata->noack_map = noack_map;
 306
 307         ieee80211_check_fast_xmit_iface(sdata);
 308
 309         return 0;
 310 }
 311
 312 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 313                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 314                              struct key_params *params)
 315 {
 316         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317         struct ieee80211_local *local = sdata->local;
 318         struct sta_info *sta = NULL;
 319         const struct ieee80211_cipher_scheme *cs = NULL;
 320         struct ieee80211_key *key;
 321         int err;
 322
 323         if (!ieee80211_sdata_running(sdata))
 324                 return -ENETDOWN;
 325
 326         /* reject WEP and TKIP keys if WEP failed to initialize */
 327         switch (params->cipher) {
 328         case WLAN_CIPHER_SUITE_WEP40:
 329         case WLAN_CIPHER_SUITE_TKIP:
 330         case WLAN_CIPHER_SUITE_WEP104:
 331                 if (IS_ERR(local->wep_tx_tfm))
 332                         return -EINVAL;
 333                 break;
 334         case WLAN_CIPHER_SUITE_CCMP:
 335         case WLAN_CIPHER_SUITE_CCMP_256:
 336         case WLAN_CIPHER_SUITE_AES_CMAC:
 337         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 338         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 339         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 340         case WLAN_CIPHER_SUITE_GCMP:
 341         case WLAN_CIPHER_SUITE_GCMP_256:
 342                 break;
 343         default:
 344                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 345                 break;
 346         }
 347
 348         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 349                                   params->key, params->seq_len, params->seq,
 350                                   cs);
 351         if (IS_ERR(key))
 352                 return PTR_ERR(key);
 353
 354         if (pairwise)
 355                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 356
 357         mutex_lock(&local->sta_mtx);
 358
 359         if (mac_addr) {
 360                 if (ieee80211_vif_is_mesh(&sdata->vif))
 361                         sta = sta_info_get(sdata, mac_addr);
 362                 else
 363                         sta = sta_info_get_bss(sdata, mac_addr);
 364                 /*
 365                  * The ASSOC test makes sure the driver is ready to
 366                  * receive the key. When wpa_supplicant has roamed
 367                  * using FT, it attempts to set the key before
 368                  * association has completed, this rejects that attempt
 369                  * so it will set the key again after association.
 370                  *
 371                  * TODO: accept the key if we have a station entry and
 372                  *       add it to the device after the station.
 373                  */
 374                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 375                         ieee80211_key_free_unused(key);
 376                         err = -ENOENT;
 377                         goto out_unlock;
 378                 }
 379         }
 380
 381         switch (sdata->vif.type) {
 382         case NL80211_IFTYPE_STATION:
 383                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 384                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 385                 break;
 386         case NL80211_IFTYPE_AP:
 387         case NL80211_IFTYPE_AP_VLAN:
 388                 /* Keys without a station are used for TX only */
 389                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 390                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 391                 break;
 392         case NL80211_IFTYPE_ADHOC:
 393                 /* no MFP (yet) */
 394                 break;
 395         case NL80211_IFTYPE_MESH_POINT:
 396 #ifdef CONFIG_MAC80211_MESH
 397                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 398                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 399                 break;
 400 #endif
 401         case NL80211_IFTYPE_WDS:
 402         case NL80211_IFTYPE_MONITOR:
 403         case NL80211_IFTYPE_P2P_DEVICE:
 404         case NL80211_IFTYPE_NAN:
 405         case NL80211_IFTYPE_UNSPECIFIED:
 406         case NUM_NL80211_IFTYPES:
 407         case NL80211_IFTYPE_P2P_CLIENT:
 408         case NL80211_IFTYPE_P2P_GO:
 409         case NL80211_IFTYPE_OCB:
 410                 /* shouldn't happen */
 411                 WARN_ON_ONCE(1);
 412                 break;
 413         }
 414
 415         if (sta)
 416                 sta->cipher_scheme = cs;
 417
 418         err = ieee80211_key_link(key, sdata, sta);
 419
 420  out_unlock:
 421         mutex_unlock(&local->sta_mtx);
 422
 423         return err;
 424 }
 425
 426 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 427                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 428 {
 429         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 430         struct ieee80211_local *local = sdata->local;
 431         struct sta_info *sta;
 432         struct ieee80211_key *key = NULL;
 433         int ret;
 434
 435         mutex_lock(&local->sta_mtx);
 436         mutex_lock(&local->key_mtx);
 437
 438         if (mac_addr) {
 439                 ret = -ENOENT;
 440
 441                 sta = sta_info_get_bss(sdata, mac_addr);
 442                 if (!sta)
 443                         goto out_unlock;
 444
 445                 if (pairwise)
 446                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 447                 else
 448                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 449         } else
 450                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 451
 452         if (!key) {
 453                 ret = -ENOENT;
 454                 goto out_unlock;
 455         }
 456
 457         ieee80211_key_free(key, true);
 458
 459         ret = 0;
 460  out_unlock:
 461         mutex_unlock(&local->key_mtx);
 462         mutex_unlock(&local->sta_mtx);
 463
 464         return ret;
 465 }
 466
 467 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 468                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 469                              void *cookie,
 470                              void (*callback)(void *cookie,
 471                                               struct key_params *params))
 472 {
 473         struct ieee80211_sub_if_data *sdata;
 474         struct sta_info *sta = NULL;
 475         u8 seq[6] = {0};
 476         struct key_params params;
 477         struct ieee80211_key *key = NULL;
 478         u64 pn64;
 479         u32 iv32;
 480         u16 iv16;
 481         int err = -ENOENT;
 482         struct ieee80211_key_seq kseq = {};
 483
 484         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 485
 486         rcu_read_lock();
 487
 488         if (mac_addr) {
 489                 sta = sta_info_get_bss(sdata, mac_addr);
 490                 if (!sta)
 491                         goto out;
 492
 493                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 494                         key = rcu_dereference(sta->ptk[key_idx]);
 495                 else if (!pairwise &&
 496                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 497                         key = rcu_dereference(sta->gtk[key_idx]);
 498         } else
 499                 key = rcu_dereference(sdata->keys[key_idx]);
 500
 501         if (!key)
 502                 goto out;
 503
 504         memset(&params, 0, sizeof(params));
 505
 506         params.cipher = key->conf.cipher;
 507
 508         switch (key->conf.cipher) {
 509         case WLAN_CIPHER_SUITE_TKIP:
 510                 pn64 = atomic64_read(&key->conf.tx_pn);
 511                 iv32 = TKIP_PN_TO_IV32(pn64);
 512                 iv16 = TKIP_PN_TO_IV16(pn64);
 513
 514                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 515                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 516                         drv_get_key_seq(sdata->local, key, &kseq);
 517                         iv32 = kseq.tkip.iv32;
 518                         iv16 = kseq.tkip.iv16;
 519                 }
 520
 521                 seq[0] = iv16 & 0xff;
 522                 seq[1] = (iv16 >> 8) & 0xff;
 523                 seq[2] = iv32 & 0xff;
 524                 seq[3] = (iv32 >> 8) & 0xff;
 525                 seq[4] = (iv32 >> 16) & 0xff;
 526                 seq[5] = (iv32 >> 24) & 0xff;
 527                 params.seq = seq;
 528                 params.seq_len = 6;
 529                 break;
 530         case WLAN_CIPHER_SUITE_CCMP:
 531         case WLAN_CIPHER_SUITE_CCMP_256:
 532         case WLAN_CIPHER_SUITE_AES_CMAC:
 533         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 534                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 535                              offsetof(typeof(kseq), aes_cmac));
 536         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 537         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 538                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 539                              offsetof(typeof(kseq), aes_gmac));
 540         case WLAN_CIPHER_SUITE_GCMP:
 541         case WLAN_CIPHER_SUITE_GCMP_256:
 542                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 543                              offsetof(typeof(kseq), gcmp));
 544
 545                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 546                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 547                         drv_get_key_seq(sdata->local, key, &kseq);
 548                         memcpy(seq, kseq.ccmp.pn, 6);
 549                 } else {
 550                         pn64 = atomic64_read(&key->conf.tx_pn);
 551                         seq[0] = pn64;
 552                         seq[1] = pn64 >> 8;
 553                         seq[2] = pn64 >> 16;
 554                         seq[3] = pn64 >> 24;
 555                         seq[4] = pn64 >> 32;
 556                         seq[5] = pn64 >> 40;
 557                 }
 558                 params.seq = seq;
 559                 params.seq_len = 6;
 560                 break;
 561         default:
 562                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 563                         break;
 564                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 565                         break;
 566                 drv_get_key_seq(sdata->local, key, &kseq);
 567                 params.seq = kseq.hw.seq;
 568                 params.seq_len = kseq.hw.seq_len;
 569                 break;
 570         }
 571
 572         params.key = key->conf.key;
 573         params.key_len = key->conf.keylen;
 574
 575         callback(cookie, &params);
 576         err = 0;
 577
 578  out:
 579         rcu_read_unlock();
 580         return err;
 581 }
 582
 583 static int ieee80211_config_default_key(struct wiphy *wiphy,
 584                                         struct net_device *dev,
 585                                         u8 key_idx, bool uni,
 586                                         bool multi)
 587 {
 588         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 589
 590         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 591
 592         return 0;
 593 }
 594
 595 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 596                                              struct net_device *dev,
 597                                              u8 key_idx)
 598 {
 599         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 600
 601         ieee80211_set_default_mgmt_key(sdata, key_idx);
 602
 603         return 0;
 604 }
 605
 606 void sta_set_rate_info_tx(struct sta_info *sta,
 607                           const struct ieee80211_tx_rate *rate,
 608                           struct rate_info *rinfo)
 609 {
 610         rinfo->flags = 0;
 611         if (rate->flags & IEEE80211_TX_RC_MCS) {
 612                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 613                 rinfo->mcs = rate->idx;
 614         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 615                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 616                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 617                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 618         } else {
 619                 struct ieee80211_supported_band *sband;
 620                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 621                 u16 brate;
 622
 623                 sband = sta->local->hw.wiphy->bands[
 624                                 ieee80211_get_sdata_band(sta->sdata)];
 625                 brate = sband->bitrates[rate->idx].bitrate;
 626                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 627         }
 628         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 629                 rinfo->bw = RATE_INFO_BW_40;
 630         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 631                 rinfo->bw = RATE_INFO_BW_80;
 632         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 633                 rinfo->bw = RATE_INFO_BW_160;
 634         else
 635                 rinfo->bw = RATE_INFO_BW_20;
 636         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 637                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 638 }
 639
 640 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 641                                   int idx, u8 *mac, struct station_info *sinfo)
 642 {
 643         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 644         struct ieee80211_local *local = sdata->local;
 645         struct sta_info *sta;
 646         int ret = -ENOENT;
 647
 648         mutex_lock(&local->sta_mtx);
 649
 650         sta = sta_info_get_by_idx(sdata, idx);
 651         if (sta) {
 652                 ret = 0;
 653                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 654                 sta_set_sinfo(sta, sinfo);
 655         }
 656
 657         mutex_unlock(&local->sta_mtx);
 658
 659         return ret;
 660 }
 661
 662 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 663                                  int idx, struct survey_info *survey)
 664 {
 665         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 666
 667         return drv_get_survey(local, idx, survey);
 668 }
 669
 670 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 671                                  const u8 *mac, struct station_info *sinfo)
 672 {
 673         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 674         struct ieee80211_local *local = sdata->local;
 675         struct sta_info *sta;
 676         int ret = -ENOENT;
 677
 678         mutex_lock(&local->sta_mtx);
 679
 680         sta = sta_info_get_bss(sdata, mac);
 681         if (sta) {
 682                 ret = 0;
 683                 sta_set_sinfo(sta, sinfo);
 684         }
 685
 686         mutex_unlock(&local->sta_mtx);
 687
 688         return ret;
 689 }
 690
 691 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 692                                          struct cfg80211_chan_def *chandef)
 693 {
 694         struct ieee80211_local *local = wiphy_priv(wiphy);
 695         struct ieee80211_sub_if_data *sdata;
 696         int ret = 0;
 697
 698         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 699                 return 0;
 700
 701         mutex_lock(&local->mtx);
 702         mutex_lock(&local->iflist_mtx);
 703         if (local->use_chanctx) {
 704                 sdata = rcu_dereference_protected(
 705                                 local->monitor_sdata,
 706                                 lockdep_is_held(&local->iflist_mtx));
 707                 if (sdata) {
 708                         ieee80211_vif_release_channel(sdata);
 709                         ret = ieee80211_vif_use_channel(sdata, chandef,
 710                                         IEEE80211_CHANCTX_EXCLUSIVE);
 711                 }
 712         } else if (local->open_count == local->monitors) {
 713                 local->_oper_chandef = *chandef;
 714                 ieee80211_hw_config(local, 0);
 715         }
 716
 717         if (ret == 0)
 718                 local->monitor_chandef = *chandef;
 719         mutex_unlock(&local->iflist_mtx);
 720         mutex_unlock(&local->mtx);
 721
 722         return ret;
 723 }
 724
 725 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 726                                     const u8 *resp, size_t resp_len,
 727                                     const struct ieee80211_csa_settings *csa)
 728 {
 729         struct probe_resp *new, *old;
 730
 731         if (!resp || !resp_len)
 732                 return 1;
 733
 734         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 735
 736         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 737         if (!new)
 738                 return -ENOMEM;
 739
 740         new->len = resp_len;
 741         memcpy(new->data, resp, resp_len);
 742
 743         if (csa)
 744                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 745                        csa->n_counter_offsets_presp *
 746                        sizeof(new->csa_counter_offsets[0]));
 747
 748         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 749         if (old)
 750                 kfree_rcu(old, rcu_head);
 751
 752         return 0;
 753 }
 754
 755 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 756                                    struct cfg80211_beacon_data *params,
 757                                    const struct ieee80211_csa_settings *csa)
 758 {
 759         struct beacon_data *new, *old;
 760         int new_head_len, new_tail_len;
 761         int size, err;
 762         u32 changed = BSS_CHANGED_BEACON;
 763
 764         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 765
 766
 767         /* Need to have a beacon head if we don't have one yet */
 768         if (!params->head && !old)
 769                 return -EINVAL;
 770
 771         /* new or old head? */
 772         if (params->head)
 773                 new_head_len = params->head_len;
 774         else
 775                 new_head_len = old->head_len;
 776
 777         /* new or old tail? */
 778         if (params->tail || !old)
 779                 /* params->tail_len will be zero for !params->tail */
 780                 new_tail_len = params->tail_len;
 781         else
 782                 new_tail_len = old->tail_len;
 783
 784         size = sizeof(*new) + new_head_len + new_tail_len;
 785
 786         new = kzalloc(size, GFP_KERNEL);
 787         if (!new)
 788                 return -ENOMEM;
 789
 790         /* start filling the new info now */
 791
 792         /*
 793          * pointers go into the block we allocated,
 794          * memory is | beacon_data | head | tail |
 795          */
 796         new->head = ((u8 *) new) + sizeof(*new);
 797         new->tail = new->head + new_head_len;
 798         new->head_len = new_head_len;
 799         new->tail_len = new_tail_len;
 800
 801         if (csa) {
 802                 new->csa_current_counter = csa->count;
 803                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 804                        csa->n_counter_offsets_beacon *
 805                        sizeof(new->csa_counter_offsets[0]));
 806         }
 807
 808         /* copy in head */
 809         if (params->head)
 810                 memcpy(new->head, params->head, new_head_len);
 811         else
 812                 memcpy(new->head, old->head, new_head_len);
 813
 814         /* copy in optional tail */
 815         if (params->tail)
 816                 memcpy(new->tail, params->tail, new_tail_len);
 817         else
 818                 if (old)
 819                         memcpy(new->tail, old->tail, new_tail_len);
 820
 821         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 822                                        params->probe_resp_len, csa);
 823         if (err < 0)
 824                 return err;
 825         if (err == 0)
 826                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 827
 828         rcu_assign_pointer(sdata->u.ap.beacon, new);
 829
 830         if (old)
 831                 kfree_rcu(old, rcu_head);
 832
 833         return changed;
 834 }
 835
 836 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 837                               struct cfg80211_ap_settings *params)
 838 {
 839         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 840         struct ieee80211_local *local = sdata->local;
 841         struct beacon_data *old;
 842         struct ieee80211_sub_if_data *vlan;
 843         u32 changed = BSS_CHANGED_BEACON_INT |
 844                       BSS_CHANGED_BEACON_ENABLED |
 845                       BSS_CHANGED_BEACON |
 846                       BSS_CHANGED_SSID |
 847                       BSS_CHANGED_P2P_PS |
 848                       BSS_CHANGED_TXPOWER;
 849         int err;
 850
 851         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 852         if (old)
 853                 return -EALREADY;
 854
 855         switch (params->smps_mode) {
 856         case NL80211_SMPS_OFF:
 857                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 858                 break;
 859         case NL80211_SMPS_STATIC:
 860                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 861                 break;
 862         case NL80211_SMPS_DYNAMIC:
 863                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 864                 break;
 865         default:
 866                 return -EINVAL;
 867         }
 868         sdata->needed_rx_chains = sdata->local->rx_chains;
 869
 870         mutex_lock(&local->mtx);
 871         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 872                                         IEEE80211_CHANCTX_SHARED);
 873         if (!err)
 874                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 875         mutex_unlock(&local->mtx);
 876         if (err)
 877                 return err;
 878
 879         /*
 880          * Apply control port protocol, this allows us to
 881          * not encrypt dynamic WEP control frames.
 882          */
 883         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 884         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 885         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 886                                                         &params->crypto,
 887                                                         sdata->vif.type);
 888
 889         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 890                 vlan->control_port_protocol =
 891                         params->crypto.control_port_ethertype;
 892                 vlan->control_port_no_encrypt =
 893                         params->crypto.control_port_no_encrypt;
 894                 vlan->encrypt_headroom =
 895                         ieee80211_cs_headroom(sdata->local,
 896                                               &params->crypto,
 897                                               vlan->vif.type);
 898         }
 899
 900         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 901         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 902         sdata->vif.bss_conf.enable_beacon = true;
 903         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 904
 905         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 906         if (params->ssid_len)
 907                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 908                        params->ssid_len);
 909         sdata->vif.bss_conf.hidden_ssid =
 910                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 911
 912         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 913                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 914         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 915                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 916         if (params->p2p_opp_ps)
 917                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 918                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 919
 920         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 921         if (err < 0) {
 922                 ieee80211_vif_release_channel(sdata);
 923                 return err;
 924         }
 925         changed |= err;
 926
 927         err = drv_start_ap(sdata->local, sdata);
 928         if (err) {
 929                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 930
 931                 if (old)
 932                         kfree_rcu(old, rcu_head);
 933                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 934                 ieee80211_vif_release_channel(sdata);
 935                 return err;
 936         }
 937
 938         ieee80211_recalc_dtim(local, sdata);
 939         ieee80211_bss_info_change_notify(sdata, changed);
 940
 941         netif_carrier_on(dev);
 942         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 943                 netif_carrier_on(vlan->dev);
 944
 945         return 0;
 946 }
 947
 948 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 949                                    struct cfg80211_beacon_data *params)
 950 {
 951         struct ieee80211_sub_if_data *sdata;
 952         struct beacon_data *old;
 953         int err;
 954
 955         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 956         sdata_assert_lock(sdata);
 957
 958         /* don't allow changing the beacon while CSA is in place - offset
 959          * of channel switch counter may change
 960          */
 961         if (sdata->vif.csa_active)
 962                 return -EBUSY;
 963
 964         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 965         if (!old)
 966                 return -ENOENT;
 967
 968         err = ieee80211_assign_beacon(sdata, params, NULL);
 969         if (err < 0)
 970                 return err;
 971         ieee80211_bss_info_change_notify(sdata, err);
 972         return 0;
 973 }
 974
 975 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 976 {
 977         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 978         struct ieee80211_sub_if_data *vlan;
 979         struct ieee80211_local *local = sdata->local;
 980         struct beacon_data *old_beacon;
 981         struct probe_resp *old_probe_resp;
 982         struct cfg80211_chan_def chandef;
 983
 984         sdata_assert_lock(sdata);
 985
 986         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 987         if (!old_beacon)
 988                 return -ENOENT;
 989         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 990
 991         /* abort any running channel switch */
 992         mutex_lock(&local->mtx);
 993         sdata->vif.csa_active = false;
 994         if (sdata->csa_block_tx) {
 995                 ieee80211_wake_vif_queues(local, sdata,
 996                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 997                 sdata->csa_block_tx = false;
 998         }
 999
1000         mutex_unlock(&local->mtx);
1001
1002         kfree(sdata->u.ap.next_beacon);
1003         sdata->u.ap.next_beacon = NULL;
1004
1005         /* turn off carrier for this interface and dependent VLANs */
1006         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1007                 netif_carrier_off(vlan->dev);
1008         netif_carrier_off(dev);
1009
1010         /* remove beacon and probe response */
1011         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1012         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1013         kfree_rcu(old_beacon, rcu_head);
1014         if (old_probe_resp)
1015                 kfree_rcu(old_probe_resp, rcu_head);
1016         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1017
1018         __sta_info_flush(sdata, true);
1019         ieee80211_free_keys(sdata, true);
1020
1021         sdata->vif.bss_conf.enable_beacon = false;
1022         sdata->vif.bss_conf.ssid_len = 0;
1023         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1024         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1025
1026         if (sdata->wdev.cac_started) {
1027                 chandef = sdata->vif.bss_conf.chandef;
1028                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1029                 cfg80211_cac_event(sdata->dev, &chandef,
1030                                    NL80211_RADAR_CAC_ABORTED,
1031                                    GFP_KERNEL);
1032         }
1033
1034         drv_stop_ap(sdata->local, sdata);
1035
1036         /* free all potentially still buffered bcast frames */
1037         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1038         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1039
1040         mutex_lock(&local->mtx);
1041         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1042         ieee80211_vif_release_channel(sdata);
1043         mutex_unlock(&local->mtx);
1044
1045         return 0;
1046 }
1047
1048 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1049 struct iapp_layer2_update {
1050         u8 da[ETH_ALEN];        /* broadcast */
1051         u8 sa[ETH_ALEN];        /* STA addr */
1052         __be16 len;             /* 6 */
1053         u8 dsap;                /* 0 */
1054         u8 ssap;                /* 0 */
1055         u8 control;
1056         u8 xid_info[3];
1057 } __packed;
1058
1059 static void ieee80211_send_layer2_update(struct sta_info *sta)
1060 {
1061         struct iapp_layer2_update *msg;
1062         struct sk_buff *skb;
1063
1064         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1065          * bridge devices */
1066
1067         skb = dev_alloc_skb(sizeof(*msg));
1068         if (!skb)
1069                 return;
1070         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1071
1072         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1073          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1074
1075         eth_broadcast_addr(msg->da);
1076         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1077         msg->len = htons(6);
1078         msg->dsap = 0;
1079         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1080         msg->control = 0xaf;    /* XID response lsb.1111F101.
1081                                  * F=0 (no poll command; unsolicited frame) */
1082         msg->xid_info[0] = 0x81;        /* XID format identifier */
1083         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1084         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1085
1086         skb->dev = sta->sdata->dev;
1087         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1088         memset(skb->cb, 0, sizeof(skb->cb));
1089         netif_rx_ni(skb);
1090 }
1091
1092 static int sta_apply_auth_flags(struct ieee80211_local *local,
1093                                 struct sta_info *sta,
1094                                 u32 mask, u32 set)
1095 {
1096         int ret;
1097
1098         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1099             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1100             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1101                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1102                 if (ret)
1103                         return ret;
1104         }
1105
1106         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1107             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1108             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1109                 /*
1110                  * When peer becomes associated, init rate control as
1111                  * well. Some drivers require rate control initialized
1112                  * before drv_sta_state() is called.
1113                  */
1114                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1115                         rate_control_rate_init(sta);
1116
1117                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1118                 if (ret)
1119                         return ret;
1120         }
1121
1122         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1123                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1124                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1125                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1126                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1127                 else
1128                         ret = 0;
1129                 if (ret)
1130                         return ret;
1131         }
1132
1133         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1134             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1135             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1136                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1137                 if (ret)
1138                         return ret;
1139         }
1140
1141         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1142             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1143             test_sta_flag(sta, WLAN_STA_AUTH)) {
1144                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1145                 if (ret)
1146                         return ret;
1147         }
1148
1149         return 0;
1150 }
1151
1152 static void sta_apply_mesh_params(struct ieee80211_local *local,
1153                                   struct sta_info *sta,
1154                                   struct station_parameters *params)
1155 {
1156 #ifdef CONFIG_MAC80211_MESH
1157         struct ieee80211_sub_if_data *sdata = sta->sdata;
1158         u32 changed = 0;
1159
1160         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1161                 switch (params->plink_state) {
1162                 case NL80211_PLINK_ESTAB:
1163                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1164                                 changed = mesh_plink_inc_estab_count(sdata);
1165                         sta->mesh->plink_state = params->plink_state;
1166                         sta->mesh->aid = params->peer_aid;
1167
1168                         ieee80211_mps_sta_status_update(sta);
1169                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1170                                       sdata->u.mesh.mshcfg.power_mode);
1171                         break;
1172                 case NL80211_PLINK_LISTEN:
1173                 case NL80211_PLINK_BLOCKED:
1174                 case NL80211_PLINK_OPN_SNT:
1175                 case NL80211_PLINK_OPN_RCVD:
1176                 case NL80211_PLINK_CNF_RCVD:
1177                 case NL80211_PLINK_HOLDING:
1178                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1179                                 changed = mesh_plink_dec_estab_count(sdata);
1180                         sta->mesh->plink_state = params->plink_state;
1181
1182                         ieee80211_mps_sta_status_update(sta);
1183                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1184                                         NL80211_MESH_POWER_UNKNOWN);
1185                         break;
1186                 default:
1187                         /*  nothing  */
1188                         break;
1189                 }
1190         }
1191
1192         switch (params->plink_action) {
1193         case NL80211_PLINK_ACTION_NO_ACTION:
1194                 /* nothing */
1195                 break;
1196         case NL80211_PLINK_ACTION_OPEN:
1197                 changed |= mesh_plink_open(sta);
1198                 break;
1199         case NL80211_PLINK_ACTION_BLOCK:
1200                 changed |= mesh_plink_block(sta);
1201                 break;
1202         }
1203
1204         if (params->local_pm)
1205                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1206                                                           params->local_pm);
1207
1208         ieee80211_mbss_info_change_notify(sdata, changed);
1209 #endif
1210 }
1211
1212 static int sta_apply_parameters(struct ieee80211_local *local,
1213                                 struct sta_info *sta,
1214                                 struct station_parameters *params)
1215 {
1216         int ret = 0;
1217         struct ieee80211_supported_band *sband;
1218         struct ieee80211_sub_if_data *sdata = sta->sdata;
1219         enum nl80211_band band = ieee80211_get_sdata_band(sdata);
1220         u32 mask, set;
1221
1222         sband = local->hw.wiphy->bands[band];
1223
1224         mask = params->sta_flags_mask;
1225         set = params->sta_flags_set;
1226
1227         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1228                 /*
1229                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1230                  * API but must follow AUTHENTICATED for driver state.
1231                  */
1232                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1233                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1234                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1235                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1236         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1237                 /*
1238                  * TDLS -- everything follows authorized, but
1239                  * only becoming authorized is possible, not
1240                  * going back
1241                  */
1242                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1243                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1244                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1245                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1246                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1247                 }
1248         }
1249
1250         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1251             local->hw.queues >= IEEE80211_NUM_ACS)
1252                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1253
1254         /* auth flags will be set later for TDLS,
1255          * and for unassociated stations that move to assocaited */
1256         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1257             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1258               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1259                 ret = sta_apply_auth_flags(local, sta, mask, set);
1260                 if (ret)
1261                         return ret;
1262         }
1263
1264         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1265                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1266                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1267                 else
1268                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1269         }
1270
1271         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1272                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1273                 if (set & BIT(NL80211_STA_FLAG_MFP))
1274                         set_sta_flag(sta, WLAN_STA_MFP);
1275                 else
1276                         clear_sta_flag(sta, WLAN_STA_MFP);
1277         }
1278
1279         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1280                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1281                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1282                 else
1283                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1284         }
1285
1286         /* mark TDLS channel switch support, if the AP allows it */
1287         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1288             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1289             params->ext_capab_len >= 4 &&
1290             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1291                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1292
1293         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1294             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1295             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1296             params->ext_capab_len >= 8 &&
1297             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1298                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1299
1300         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1301                 sta->sta.uapsd_queues = params->uapsd_queues;
1302                 sta->sta.max_sp = params->max_sp;
1303         }
1304
1305         /* The sender might not have sent the last bit, consider it to be 0 */
1306         if (params->ext_capab_len >= 8) {
1307                 u8 val = (params->ext_capab[7] &
1308                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1309
1310                 /* we did get all the bits, take the MSB as well */
1311                 if (params->ext_capab_len >= 9) {
1312                         u8 val_msb = params->ext_capab[8] &
1313                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1314                         val_msb <<= 1;
1315                         val |= val_msb;
1316                 }
1317
1318                 switch (val) {
1319                 case 1:
1320                         sta->sta.max_amsdu_subframes = 32;
1321                         break;
1322                 case 2:
1323                         sta->sta.max_amsdu_subframes = 16;
1324                         break;
1325                 case 3:
1326                         sta->sta.max_amsdu_subframes = 8;
1327                         break;
1328                 default:
1329                         sta->sta.max_amsdu_subframes = 0;
1330                 }
1331         }
1332
1333         /*
1334          * cfg80211 validates this (1-2007) and allows setting the AID
1335          * only when creating a new station entry
1336          */
1337         if (params->aid)
1338                 sta->sta.aid = params->aid;
1339
1340         /*
1341          * Some of the following updates would be racy if called on an
1342          * existing station, via ieee80211_change_station(). However,
1343          * all such changes are rejected by cfg80211 except for updates
1344          * changing the supported rates on an existing but not yet used
1345          * TDLS peer.
1346          */
1347
1348         if (params->listen_interval >= 0)
1349                 sta->listen_interval = params->listen_interval;
1350
1351         if (params->supported_rates) {
1352                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1353                                          sband, params->supported_rates,
1354                                          params->supported_rates_len,
1355                                          &sta->sta.supp_rates[band]);
1356         }
1357
1358         if (params->ht_capa)
1359                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1360                                                   params->ht_capa, sta);
1361
1362         /* VHT can override some HT caps such as the A-MSDU max length */
1363         if (params->vht_capa)
1364                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1365                                                     params->vht_capa, sta);
1366
1367         if (params->opmode_notif_used) {
1368                 /* returned value is only needed for rc update, but the
1369                  * rc isn't initialized here yet, so ignore it
1370                  */
1371                 __ieee80211_vht_handle_opmode(sdata, sta,
1372                                               params->opmode_notif, band);
1373         }
1374
1375         if (params->support_p2p_ps >= 0)
1376                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1377
1378         if (ieee80211_vif_is_mesh(&sdata->vif))
1379                 sta_apply_mesh_params(local, sta, params);
1380
1381         /* set the STA state after all sta info from usermode has been set */
1382         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1383             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1384                 ret = sta_apply_auth_flags(local, sta, mask, set);
1385                 if (ret)
1386                         return ret;
1387         }
1388
1389         return 0;
1390 }
1391
1392 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1393                                  const u8 *mac,
1394                                  struct station_parameters *params)
1395 {
1396         struct ieee80211_local *local = wiphy_priv(wiphy);
1397         struct sta_info *sta;
1398         struct ieee80211_sub_if_data *sdata;
1399         int err;
1400         int layer2_update;
1401
1402         if (params->vlan) {
1403                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1404
1405                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1406                     sdata->vif.type != NL80211_IFTYPE_AP)
1407                         return -EINVAL;
1408         } else
1409                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1410
1411         if (ether_addr_equal(mac, sdata->vif.addr))
1412                 return -EINVAL;
1413
1414         if (is_multicast_ether_addr(mac))
1415                 return -EINVAL;
1416
1417         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1418         if (!sta)
1419                 return -ENOMEM;
1420
1421         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1422                 sta->sta.tdls = true;
1423
1424         err = sta_apply_parameters(local, sta, params);
1425         if (err) {
1426                 sta_info_free(local, sta);
1427                 return err;
1428         }
1429
1430         /*
1431          * for TDLS and for unassociated station, rate control should be
1432          * initialized only when rates are known and station is marked
1433          * authorized/associated
1434          */
1435         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1436             test_sta_flag(sta, WLAN_STA_ASSOC))
1437                 rate_control_rate_init(sta);
1438
1439         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1440                 sdata->vif.type == NL80211_IFTYPE_AP;
1441
1442         err = sta_info_insert_rcu(sta);
1443         if (err) {
1444                 rcu_read_unlock();
1445                 return err;
1446         }
1447
1448         if (layer2_update)
1449                 ieee80211_send_layer2_update(sta);
1450
1451         rcu_read_unlock();
1452
1453         return 0;
1454 }
1455
1456 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1457                                  struct station_del_parameters *params)
1458 {
1459         struct ieee80211_sub_if_data *sdata;
1460
1461         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1462
1463         if (params->mac)
1464                 return sta_info_destroy_addr_bss(sdata, params->mac);
1465
1466         sta_info_flush(sdata);
1467         return 0;
1468 }
1469
1470 static int ieee80211_change_station(struct wiphy *wiphy,
1471                                     struct net_device *dev, const u8 *mac,
1472                                     struct station_parameters *params)
1473 {
1474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475         struct ieee80211_local *local = wiphy_priv(wiphy);
1476         struct sta_info *sta;
1477         struct ieee80211_sub_if_data *vlansdata;
1478         enum cfg80211_station_type statype;
1479         int err;
1480
1481         mutex_lock(&local->sta_mtx);
1482
1483         sta = sta_info_get_bss(sdata, mac);
1484         if (!sta) {
1485                 err = -ENOENT;
1486                 goto out_err;
1487         }
1488
1489         switch (sdata->vif.type) {
1490         case NL80211_IFTYPE_MESH_POINT:
1491                 if (sdata->u.mesh.user_mpm)
1492                         statype = CFG80211_STA_MESH_PEER_USER;
1493                 else
1494                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1495                 break;
1496         case NL80211_IFTYPE_ADHOC:
1497                 statype = CFG80211_STA_IBSS;
1498                 break;
1499         case NL80211_IFTYPE_STATION:
1500                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1501                         statype = CFG80211_STA_AP_STA;
1502                         break;
1503                 }
1504                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1505                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1506                 else
1507                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1508                 break;
1509         case NL80211_IFTYPE_AP:
1510         case NL80211_IFTYPE_AP_VLAN:
1511                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1512                         statype = CFG80211_STA_AP_CLIENT;
1513                 else
1514                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1515                 break;
1516         default:
1517                 err = -EOPNOTSUPP;
1518                 goto out_err;
1519         }
1520
1521         err = cfg80211_check_station_change(wiphy, params, statype);
1522         if (err)
1523                 goto out_err;
1524
1525         if (params->vlan && params->vlan != sta->sdata->dev) {
1526                 bool prev_4addr = false;
1527                 bool new_4addr = false;
1528
1529                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1530
1531                 if (params->vlan->ieee80211_ptr->use_4addr) {
1532                         if (vlansdata->u.vlan.sta) {
1533                                 err = -EBUSY;
1534                                 goto out_err;
1535                         }
1536
1537                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1538                         new_4addr = true;
1539                         __ieee80211_check_fast_rx_iface(vlansdata);
1540                 }
1541
1542                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1543                     sta->sdata->u.vlan.sta) {
1544                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1545                         prev_4addr = true;
1546                 }
1547
1548                 sta->sdata = vlansdata;
1549                 ieee80211_check_fast_xmit(sta);
1550
1551                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1552                     prev_4addr != new_4addr) {
1553                         if (new_4addr)
1554                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1555                         else
1556                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1557                 }
1558
1559                 ieee80211_send_layer2_update(sta);
1560         }
1561
1562         err = sta_apply_parameters(local, sta, params);
1563         if (err)
1564                 goto out_err;
1565
1566         mutex_unlock(&local->sta_mtx);
1567
1568         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1569              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1570             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1571             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1572             sta_info_tx_streams(sta) != 1) {
1573                 ht_dbg(sta->sdata,
1574                        "%pM just authorized and MIMO capable - update SMPS\n",
1575                        sta->sta.addr);
1576                 ieee80211_send_smps_action(sta->sdata,
1577                         sta->sdata->bss->req_smps,
1578                         sta->sta.addr,
1579                         sta->sdata->vif.bss_conf.bssid);
1580         }
1581
1582         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1583             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1584                 ieee80211_recalc_ps(local);
1585                 ieee80211_recalc_ps_vif(sdata);
1586         }
1587
1588         return 0;
1589 out_err:
1590         mutex_unlock(&local->sta_mtx);
1591         return err;
1592 }
1593
1594 #ifdef CONFIG_MAC80211_MESH
1595 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1596                                const u8 *dst, const u8 *next_hop)
1597 {
1598         struct ieee80211_sub_if_data *sdata;
1599         struct mesh_path *mpath;
1600         struct sta_info *sta;
1601
1602         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1603
1604         rcu_read_lock();
1605         sta = sta_info_get(sdata, next_hop);
1606         if (!sta) {
1607                 rcu_read_unlock();
1608                 return -ENOENT;
1609         }
1610
1611         mpath = mesh_path_add(sdata, dst);
1612         if (IS_ERR(mpath)) {
1613                 rcu_read_unlock();
1614                 return PTR_ERR(mpath);
1615         }
1616
1617         mesh_path_fix_nexthop(mpath, sta);
1618
1619         rcu_read_unlock();
1620         return 0;
1621 }
1622
1623 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1624                                const u8 *dst)
1625 {
1626         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1627
1628         if (dst)
1629                 return mesh_path_del(sdata, dst);
1630
1631         mesh_path_flush_by_iface(sdata);
1632         return 0;
1633 }
1634
1635 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1636                                   const u8 *dst, const u8 *next_hop)
1637 {
1638         struct ieee80211_sub_if_data *sdata;
1639         struct mesh_path *mpath;
1640         struct sta_info *sta;
1641
1642         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1643
1644         rcu_read_lock();
1645
1646         sta = sta_info_get(sdata, next_hop);
1647         if (!sta) {
1648                 rcu_read_unlock();
1649                 return -ENOENT;
1650         }
1651
1652         mpath = mesh_path_lookup(sdata, dst);
1653         if (!mpath) {
1654                 rcu_read_unlock();
1655                 return -ENOENT;
1656         }
1657
1658         mesh_path_fix_nexthop(mpath, sta);
1659
1660         rcu_read_unlock();
1661         return 0;
1662 }
1663
1664 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1665                             struct mpath_info *pinfo)
1666 {
1667         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1668
1669         if (next_hop_sta)
1670                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1671         else
1672                 eth_zero_addr(next_hop);
1673
1674         memset(pinfo, 0, sizeof(*pinfo));
1675
1676         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1677
1678         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1679                         MPATH_INFO_SN |
1680                         MPATH_INFO_METRIC |
1681                         MPATH_INFO_EXPTIME |
1682                         MPATH_INFO_DISCOVERY_TIMEOUT |
1683                         MPATH_INFO_DISCOVERY_RETRIES |
1684                         MPATH_INFO_FLAGS;
1685
1686         pinfo->frame_qlen = mpath->frame_queue.qlen;
1687         pinfo->sn = mpath->sn;
1688         pinfo->metric = mpath->metric;
1689         if (time_before(jiffies, mpath->exp_time))
1690                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1691         pinfo->discovery_timeout =
1692                         jiffies_to_msecs(mpath->discovery_timeout);
1693         pinfo->discovery_retries = mpath->discovery_retries;
1694         if (mpath->flags & MESH_PATH_ACTIVE)
1695                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1696         if (mpath->flags & MESH_PATH_RESOLVING)
1697                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1698         if (mpath->flags & MESH_PATH_SN_VALID)
1699                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1700         if (mpath->flags & MESH_PATH_FIXED)
1701                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1702         if (mpath->flags & MESH_PATH_RESOLVED)
1703                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1704 }
1705
1706 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1707                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1708
1709 {
1710         struct ieee80211_sub_if_data *sdata;
1711         struct mesh_path *mpath;
1712
1713         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1714
1715         rcu_read_lock();
1716         mpath = mesh_path_lookup(sdata, dst);
1717         if (!mpath) {
1718                 rcu_read_unlock();
1719                 return -ENOENT;
1720         }
1721         memcpy(dst, mpath->dst, ETH_ALEN);
1722         mpath_set_pinfo(mpath, next_hop, pinfo);
1723         rcu_read_unlock();
1724         return 0;
1725 }
1726
1727 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1728                                 int idx, u8 *dst, u8 *next_hop,
1729                                 struct mpath_info *pinfo)
1730 {
1731         struct ieee80211_sub_if_data *sdata;
1732         struct mesh_path *mpath;
1733
1734         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1735
1736         rcu_read_lock();
1737         mpath = mesh_path_lookup_by_idx(sdata, idx);
1738         if (!mpath) {
1739                 rcu_read_unlock();
1740                 return -ENOENT;
1741         }
1742         memcpy(dst, mpath->dst, ETH_ALEN);
1743         mpath_set_pinfo(mpath, next_hop, pinfo);
1744         rcu_read_unlock();
1745         return 0;
1746 }
1747
1748 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1749                           struct mpath_info *pinfo)
1750 {
1751         memset(pinfo, 0, sizeof(*pinfo));
1752         memcpy(mpp, mpath->mpp, ETH_ALEN);
1753
1754         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1755 }
1756
1757 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1758                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1759
1760 {
1761         struct ieee80211_sub_if_data *sdata;
1762         struct mesh_path *mpath;
1763
1764         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1765
1766         rcu_read_lock();
1767         mpath = mpp_path_lookup(sdata, dst);
1768         if (!mpath) {
1769                 rcu_read_unlock();
1770                 return -ENOENT;
1771         }
1772         memcpy(dst, mpath->dst, ETH_ALEN);
1773         mpp_set_pinfo(mpath, mpp, pinfo);
1774         rcu_read_unlock();
1775         return 0;
1776 }
1777
1778 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1779                               int idx, u8 *dst, u8 *mpp,
1780                               struct mpath_info *pinfo)
1781 {
1782         struct ieee80211_sub_if_data *sdata;
1783         struct mesh_path *mpath;
1784
1785         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1786
1787         rcu_read_lock();
1788         mpath = mpp_path_lookup_by_idx(sdata, idx);
1789         if (!mpath) {
1790                 rcu_read_unlock();
1791                 return -ENOENT;
1792         }
1793         memcpy(dst, mpath->dst, ETH_ALEN);
1794         mpp_set_pinfo(mpath, mpp, pinfo);
1795         rcu_read_unlock();
1796         return 0;
1797 }
1798
1799 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1800                                 struct net_device *dev,
1801                                 struct mesh_config *conf)
1802 {
1803         struct ieee80211_sub_if_data *sdata;
1804         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1805
1806         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1807         return 0;
1808 }
1809
1810 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1811 {
1812         return (mask >> (parm-1)) & 0x1;
1813 }
1814
1815 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1816                 const struct mesh_setup *setup)
1817 {
1818         u8 *new_ie;
1819         const u8 *old_ie;
1820         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1821                                         struct ieee80211_sub_if_data, u.mesh);
1822
1823         /* allocate information elements */
1824         new_ie = NULL;
1825         old_ie = ifmsh->ie;
1826
1827         if (setup->ie_len) {
1828                 new_ie = kmemdup(setup->ie, setup->ie_len,
1829                                 GFP_KERNEL);
1830                 if (!new_ie)
1831                         return -ENOMEM;
1832         }
1833         ifmsh->ie_len = setup->ie_len;
1834         ifmsh->ie = new_ie;
1835         kfree(old_ie);
1836
1837         /* now copy the rest of the setup parameters */
1838         ifmsh->mesh_id_len = setup->mesh_id_len;
1839         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1840         ifmsh->mesh_sp_id = setup->sync_method;
1841         ifmsh->mesh_pp_id = setup->path_sel_proto;
1842         ifmsh->mesh_pm_id = setup->path_metric;
1843         ifmsh->user_mpm = setup->user_mpm;
1844         ifmsh->mesh_auth_id = setup->auth_id;
1845         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1846         if (setup->is_authenticated)
1847                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1848         if (setup->is_secure)
1849                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1850
1851         /* mcast rate setting in Mesh Node */
1852         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1853                                                 sizeof(setup->mcast_rate));
1854         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1855
1856         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1857         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1858
1859         return 0;
1860 }
1861
1862 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1863                                         struct net_device *dev, u32 mask,
1864                                         const struct mesh_config *nconf)
1865 {
1866         struct mesh_config *conf;
1867         struct ieee80211_sub_if_data *sdata;
1868         struct ieee80211_if_mesh *ifmsh;
1869
1870         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1871         ifmsh = &sdata->u.mesh;
1872
1873         /* Set the config options which we are interested in setting */
1874         conf = &(sdata->u.mesh.mshcfg);
1875         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1876                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1878                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1879         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1880                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1881         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1882                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1883         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1884                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1885         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1886                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1887         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1888                 conf->element_ttl = nconf->element_ttl;
1889         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1890                 if (ifmsh->user_mpm)
1891                         return -EBUSY;
1892                 conf->auto_open_plinks = nconf->auto_open_plinks;
1893         }
1894         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1895                 conf->dot11MeshNbrOffsetMaxNeighbor =
1896                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1897         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1898                 conf->dot11MeshHWMPmaxPREQretries =
1899                         nconf->dot11MeshHWMPmaxPREQretries;
1900         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1901                 conf->path_refresh_time = nconf->path_refresh_time;
1902         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1903                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1904         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1905                 conf->dot11MeshHWMPactivePathTimeout =
1906                         nconf->dot11MeshHWMPactivePathTimeout;
1907         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1908                 conf->dot11MeshHWMPpreqMinInterval =
1909                         nconf->dot11MeshHWMPpreqMinInterval;
1910         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1911                 conf->dot11MeshHWMPperrMinInterval =
1912                         nconf->dot11MeshHWMPperrMinInterval;
1913         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1914                            mask))
1915                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1916                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1917         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1918                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1919                 ieee80211_mesh_root_setup(ifmsh);
1920         }
1921         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1922                 /* our current gate announcement implementation rides on root
1923                  * announcements, so require this ifmsh to also be a root node
1924                  * */
1925                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1926                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1927                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1928                         ieee80211_mesh_root_setup(ifmsh);
1929                 }
1930                 conf->dot11MeshGateAnnouncementProtocol =
1931                         nconf->dot11MeshGateAnnouncementProtocol;
1932         }
1933         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1934                 conf->dot11MeshHWMPRannInterval =
1935                         nconf->dot11MeshHWMPRannInterval;
1936         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1937                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1938         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1939                 /* our RSSI threshold implementation is supported only for
1940                  * devices that report signal in dBm.
1941                  */
1942                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1943                         return -ENOTSUPP;
1944                 conf->rssi_threshold = nconf->rssi_threshold;
1945         }
1946         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1947                 conf->ht_opmode = nconf->ht_opmode;
1948                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1949                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1950         }
1951         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1952                 conf->dot11MeshHWMPactivePathToRootTimeout =
1953                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1954         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1955                 conf->dot11MeshHWMProotInterval =
1956                         nconf->dot11MeshHWMProotInterval;
1957         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1958                 conf->dot11MeshHWMPconfirmationInterval =
1959                         nconf->dot11MeshHWMPconfirmationInterval;
1960         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1961                 conf->power_mode = nconf->power_mode;
1962                 ieee80211_mps_local_status_update(sdata);
1963         }
1964         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1965                 conf->dot11MeshAwakeWindowDuration =
1966                         nconf->dot11MeshAwakeWindowDuration;
1967         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1968                 conf->plink_timeout = nconf->plink_timeout;
1969         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1970         return 0;
1971 }
1972
1973 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1974                                const struct mesh_config *conf,
1975                                const struct mesh_setup *setup)
1976 {
1977         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1978         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1979         int err;
1980
1981         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1982         err = copy_mesh_setup(ifmsh, setup);
1983         if (err)
1984                 return err;
1985
1986         /* can mesh use other SMPS modes? */
1987         sdata->smps_mode = IEEE80211_SMPS_OFF;
1988         sdata->needed_rx_chains = sdata->local->rx_chains;
1989
1990         mutex_lock(&sdata->local->mtx);
1991         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1992                                         IEEE80211_CHANCTX_SHARED);
1993         mutex_unlock(&sdata->local->mtx);
1994         if (err)
1995                 return err;
1996
1997         return ieee80211_start_mesh(sdata);
1998 }
1999
2000 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2001 {
2002         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2003
2004         ieee80211_stop_mesh(sdata);
2005         mutex_lock(&sdata->local->mtx);
2006         ieee80211_vif_release_channel(sdata);
2007         mutex_unlock(&sdata->local->mtx);
2008
2009         return 0;
2010 }
2011 #endif
2012
2013 static int ieee80211_change_bss(struct wiphy *wiphy,
2014                                 struct net_device *dev,
2015                                 struct bss_parameters *params)
2016 {
2017         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2018         enum nl80211_band band;
2019         u32 changed = 0;
2020
2021         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2022                 return -ENOENT;
2023
2024         band = ieee80211_get_sdata_band(sdata);
2025
2026         if (params->use_cts_prot >= 0) {
2027                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2028                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2029         }
2030         if (params->use_short_preamble >= 0) {
2031                 sdata->vif.bss_conf.use_short_preamble =
2032                         params->use_short_preamble;
2033                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2034         }
2035
2036         if (!sdata->vif.bss_conf.use_short_slot &&
2037             band == NL80211_BAND_5GHZ) {
2038                 sdata->vif.bss_conf.use_short_slot = true;
2039                 changed |= BSS_CHANGED_ERP_SLOT;
2040         }
2041
2042         if (params->use_short_slot_time >= 0) {
2043                 sdata->vif.bss_conf.use_short_slot =
2044                         params->use_short_slot_time;
2045                 changed |= BSS_CHANGED_ERP_SLOT;
2046         }
2047
2048         if (params->basic_rates) {
2049                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2050                                          wiphy->bands[band],
2051                                          params->basic_rates,
2052                                          params->basic_rates_len,
2053                                          &sdata->vif.bss_conf.basic_rates);
2054                 changed |= BSS_CHANGED_BASIC_RATES;
2055         }
2056
2057         if (params->ap_isolate >= 0) {
2058                 if (params->ap_isolate)
2059                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2060                 else
2061                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2062                 ieee80211_check_fast_rx_iface(sdata);
2063         }
2064
2065         if (params->ht_opmode >= 0) {
2066                 sdata->vif.bss_conf.ht_operation_mode =
2067                         (u16) params->ht_opmode;
2068                 changed |= BSS_CHANGED_HT;
2069         }
2070
2071         if (params->p2p_ctwindow >= 0) {
2072                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2073                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2074                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2075                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2076                 changed |= BSS_CHANGED_P2P_PS;
2077         }
2078
2079         if (params->p2p_opp_ps > 0) {
2080                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2081                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2082                 changed |= BSS_CHANGED_P2P_PS;
2083         } else if (params->p2p_opp_ps == 0) {
2084                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2085                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2086                 changed |= BSS_CHANGED_P2P_PS;
2087         }
2088
2089         ieee80211_bss_info_change_notify(sdata, changed);
2090
2091         return 0;
2092 }
2093
2094 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2095                                     struct net_device *dev,
2096                                     struct ieee80211_txq_params *params)
2097 {
2098         struct ieee80211_local *local = wiphy_priv(wiphy);
2099         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2100         struct ieee80211_tx_queue_params p;
2101
2102         if (!local->ops->conf_tx)
2103                 return -EOPNOTSUPP;
2104
2105         if (local->hw.queues < IEEE80211_NUM_ACS)
2106                 return -EOPNOTSUPP;
2107
2108         memset(&p, 0, sizeof(p));
2109         p.aifs = params->aifs;
2110         p.cw_max = params->cwmax;
2111         p.cw_min = params->cwmin;
2112         p.txop = params->txop;
2113
2114         /*
2115          * Setting tx queue params disables u-apsd because it's only
2116          * called in master mode.
2117          */
2118         p.uapsd = false;
2119
2120         sdata->tx_conf[params->ac] = p;
2121         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2122                 wiphy_debug(local->hw.wiphy,
2123                             "failed to set TX queue parameters for AC %d\n",
2124                             params->ac);
2125                 return -EINVAL;
2126         }
2127
2128         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2129
2130         return 0;
2131 }
2132
2133 #ifdef CONFIG_PM
2134 static int ieee80211_suspend(struct wiphy *wiphy,
2135                              struct cfg80211_wowlan *wowlan)
2136 {
2137         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2138 }
2139
2140 static int ieee80211_resume(struct wiphy *wiphy)
2141 {
2142         return __ieee80211_resume(wiphy_priv(wiphy));
2143 }
2144 #else
2145 #define ieee80211_suspend NULL
2146 #define ieee80211_resume NULL
2147 #endif
2148
2149 static int ieee80211_scan(struct wiphy *wiphy,
2150                           struct cfg80211_scan_request *req)
2151 {
2152         struct ieee80211_sub_if_data *sdata;
2153
2154         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2155
2156         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2157         case NL80211_IFTYPE_STATION:
2158         case NL80211_IFTYPE_ADHOC:
2159         case NL80211_IFTYPE_MESH_POINT:
2160         case NL80211_IFTYPE_P2P_CLIENT:
2161         case NL80211_IFTYPE_P2P_DEVICE:
2162                 break;
2163         case NL80211_IFTYPE_P2P_GO:
2164                 if (sdata->local->ops->hw_scan)
2165                         break;
2166                 /*
2167                  * FIXME: implement NoA while scanning in software,
2168                  * for now fall through to allow scanning only when
2169                  * beaconing hasn't been configured yet
2170                  */
2171         case NL80211_IFTYPE_AP:
2172                 /*
2173                  * If the scan has been forced (and the driver supports
2174                  * forcing), don't care about being beaconing already.
2175                  * This will create problems to the attached stations (e.g. all
2176                  * the  frames sent while scanning on other channel will be
2177                  * lost)
2178                  */
2179                 if (sdata->u.ap.beacon &&
2180                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2181                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2182                         return -EOPNOTSUPP;
2183                 break;
2184         case NL80211_IFTYPE_NAN:
2185         default:
2186                 return -EOPNOTSUPP;
2187         }
2188
2189         return ieee80211_request_scan(sdata, req);
2190 }
2191
2192 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2193 {
2194         ieee80211_scan_cancel(wiphy_priv(wiphy));
2195 }
2196
2197 static int
2198 ieee80211_sched_scan_start(struct wiphy *wiphy,
2199                            struct net_device *dev,
2200                            struct cfg80211_sched_scan_request *req)
2201 {
2202         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2203
2204         if (!sdata->local->ops->sched_scan_start)
2205                 return -EOPNOTSUPP;
2206
2207         return ieee80211_request_sched_scan_start(sdata, req);
2208 }
2209
2210 static int
2211 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2212 {
2213         struct ieee80211_local *local = wiphy_priv(wiphy);
2214
2215         if (!local->ops->sched_scan_stop)
2216                 return -EOPNOTSUPP;
2217
2218         return ieee80211_request_sched_scan_stop(local);
2219 }
2220
2221 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2222                           struct cfg80211_auth_request *req)
2223 {
2224         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2225 }
2226
2227 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2228                            struct cfg80211_assoc_request *req)
2229 {
2230         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2231 }
2232
2233 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2234                             struct cfg80211_deauth_request *req)
2235 {
2236         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2237 }
2238
2239 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2240                               struct cfg80211_disassoc_request *req)
2241 {
2242         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2243 }
2244
2245 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2246                                struct cfg80211_ibss_params *params)
2247 {
2248         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2249 }
2250
2251 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2252 {
2253         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2254 }
2255
2256 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2257                               struct ocb_setup *setup)
2258 {
2259         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2260 }
2261
2262 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2263 {
2264         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2265 }
2266
2267 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2268                                     int rate[NUM_NL80211_BANDS])
2269 {
2270         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2271
2272         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2273                sizeof(int) * NUM_NL80211_BANDS);
2274
2275         return 0;
2276 }
2277
2278 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2279 {
2280         struct ieee80211_local *local = wiphy_priv(wiphy);
2281         int err;
2282
2283         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2284                 ieee80211_check_fast_xmit_all(local);
2285
2286                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2287
2288                 if (err) {
2289                         ieee80211_check_fast_xmit_all(local);
2290                         return err;
2291                 }
2292         }
2293
2294         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2295             (changed & WIPHY_PARAM_DYN_ACK)) {
2296                 s16 coverage_class;
2297
2298                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2299                                         wiphy->coverage_class : -1;
2300                 err = drv_set_coverage_class(local, coverage_class);
2301
2302                 if (err)
2303                         return err;
2304         }
2305
2306         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2307                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2308
2309                 if (err)
2310                         return err;
2311         }
2312
2313         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2314                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2315                         return -EINVAL;
2316                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2317         }
2318         if (changed & WIPHY_PARAM_RETRY_LONG) {
2319                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2320                         return -EINVAL;
2321                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2322         }
2323         if (changed &
2324             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2325                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2326
2327         return 0;
2328 }
2329
2330 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2331                                   struct wireless_dev *wdev,
2332                                   enum nl80211_tx_power_setting type, int mbm)
2333 {
2334         struct ieee80211_local *local = wiphy_priv(wiphy);
2335         struct ieee80211_sub_if_data *sdata;
2336         enum nl80211_tx_power_setting txp_type = type;
2337         bool update_txp_type = false;
2338
2339         if (wdev) {
2340                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2341
2342                 switch (type) {
2343                 case NL80211_TX_POWER_AUTOMATIC:
2344                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2345                         txp_type = NL80211_TX_POWER_LIMITED;
2346                         break;
2347                 case NL80211_TX_POWER_LIMITED:
2348                 case NL80211_TX_POWER_FIXED:
2349                         if (mbm < 0 || (mbm % 100))
2350                                 return -EOPNOTSUPP;
2351                         sdata->user_power_level = MBM_TO_DBM(mbm);
2352                         break;
2353                 }
2354
2355                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2356                         update_txp_type = true;
2357                         sdata->vif.bss_conf.txpower_type = txp_type;
2358                 }
2359
2360                 ieee80211_recalc_txpower(sdata, update_txp_type);
2361
2362                 return 0;
2363         }
2364
2365         switch (type) {
2366         case NL80211_TX_POWER_AUTOMATIC:
2367                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2368                 txp_type = NL80211_TX_POWER_LIMITED;
2369                 break;
2370         case NL80211_TX_POWER_LIMITED:
2371         case NL80211_TX_POWER_FIXED:
2372                 if (mbm < 0 || (mbm % 100))
2373                         return -EOPNOTSUPP;
2374                 local->user_power_level = MBM_TO_DBM(mbm);
2375                 break;
2376         }
2377
2378         mutex_lock(&local->iflist_mtx);
2379         list_for_each_entry(sdata, &local->interfaces, list) {
2380                 sdata->user_power_level = local->user_power_level;
2381                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2382                         update_txp_type = true;
2383                 sdata->vif.bss_conf.txpower_type = txp_type;
2384         }
2385         list_for_each_entry(sdata, &local->interfaces, list)
2386                 ieee80211_recalc_txpower(sdata, update_txp_type);
2387         mutex_unlock(&local->iflist_mtx);
2388
2389         return 0;
2390 }
2391
2392 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2393                                   struct wireless_dev *wdev,
2394                                   int *dbm)
2395 {
2396         struct ieee80211_local *local = wiphy_priv(wiphy);
2397         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2398
2399         if (local->ops->get_txpower)
2400                 return drv_get_txpower(local, sdata, dbm);
2401
2402         if (!local->use_chanctx)
2403                 *dbm = local->hw.conf.power_level;
2404         else
2405                 *dbm = sdata->vif.bss_conf.txpower;
2406
2407         return 0;
2408 }
2409
2410 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2411                                   const u8 *addr)
2412 {
2413         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2414
2415         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2416
2417         return 0;
2418 }
2419
2420 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2421 {
2422         struct ieee80211_local *local = wiphy_priv(wiphy);
2423
2424         drv_rfkill_poll(local);
2425 }
2426
2427 #ifdef CONFIG_NL80211_TESTMODE
2428 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2429                                   struct wireless_dev *wdev,
2430                                   void *data, int len)
2431 {
2432         struct ieee80211_local *local = wiphy_priv(wiphy);
2433         struct ieee80211_vif *vif = NULL;
2434
2435         if (!local->ops->testmode_cmd)
2436                 return -EOPNOTSUPP;
2437
2438         if (wdev) {
2439                 struct ieee80211_sub_if_data *sdata;
2440
2441                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2442                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2443                         vif = &sdata->vif;
2444         }
2445
2446         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2447 }
2448
2449 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2450                                    struct sk_buff *skb,
2451                                    struct netlink_callback *cb,
2452                                    void *data, int len)
2453 {
2454         struct ieee80211_local *local = wiphy_priv(wiphy);
2455
2456         if (!local->ops->testmode_dump)
2457                 return -EOPNOTSUPP;
2458
2459         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2460 }
2461 #endif
2462
2463 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2464                                 enum ieee80211_smps_mode smps_mode)
2465 {
2466         struct sta_info *sta;
2467         enum ieee80211_smps_mode old_req;
2468
2469         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2470                 return -EINVAL;
2471
2472         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2473                 return 0;
2474
2475         old_req = sdata->u.ap.req_smps;
2476         sdata->u.ap.req_smps = smps_mode;
2477
2478         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2479         if (old_req == smps_mode ||
2480             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2481                 return 0;
2482
2483          /* If no associated stations, there's no need to do anything */
2484         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2485                 sdata->smps_mode = smps_mode;
2486                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2487                 return 0;
2488         }
2489
2490         ht_dbg(sdata,
2491                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2492                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2493
2494         mutex_lock(&sdata->local->sta_mtx);
2495         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2496                 /*
2497                  * Only stations associated to our AP and
2498                  * associated VLANs
2499                  */
2500                 if (sta->sdata->bss != &sdata->u.ap)
2501                         continue;
2502
2503                 /* This station doesn't support MIMO - skip it */
2504                 if (sta_info_tx_streams(sta) == 1)
2505                         continue;
2506
2507                 /*
2508                  * Don't wake up a STA just to send the action frame
2509                  * unless we are getting more restrictive.
2510                  */
2511                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2512                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2513                                                    smps_mode)) {
2514                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2515                                sta->sta.addr);
2516                         continue;
2517                 }
2518
2519                 /*
2520                  * If the STA is not authorized, wait until it gets
2521                  * authorized and the action frame will be sent then.
2522                  */
2523                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2524                         continue;
2525
2526                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2527                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2528                                            sdata->vif.bss_conf.bssid);
2529         }
2530         mutex_unlock(&sdata->local->sta_mtx);
2531
2532         sdata->smps_mode = smps_mode;
2533         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2534
2535         return 0;
2536 }
2537
2538 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2539                                  enum ieee80211_smps_mode smps_mode)
2540 {
2541         const u8 *ap;
2542         enum ieee80211_smps_mode old_req;
2543         int err;
2544         struct sta_info *sta;
2545         bool tdls_peer_found = false;
2546
2547         lockdep_assert_held(&sdata->wdev.mtx);
2548
2549         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2550                 return -EINVAL;
2551
2552         old_req = sdata->u.mgd.req_smps;
2553         sdata->u.mgd.req_smps = smps_mode;
2554
2555         if (old_req == smps_mode &&
2556             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2557                 return 0;
2558
2559         /*
2560          * If not associated, or current association is not an HT
2561          * association, there's no need to do anything, just store
2562          * the new value until we associate.
2563          */
2564         if (!sdata->u.mgd.associated ||
2565             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2566                 return 0;
2567
2568         ap = sdata->u.mgd.associated->bssid;
2569
2570         rcu_read_lock();
2571         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2572                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2573                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2574                         continue;
2575
2576                 tdls_peer_found = true;
2577                 break;
2578         }
2579         rcu_read_unlock();
2580
2581         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2582                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2583                         smps_mode = IEEE80211_SMPS_OFF;
2584                 else
2585                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2586         }
2587
2588         /* send SM PS frame to AP */
2589         err = ieee80211_send_smps_action(sdata, smps_mode,
2590                                          ap, ap);
2591         if (err)
2592                 sdata->u.mgd.req_smps = old_req;
2593         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2594                 ieee80211_teardown_tdls_peers(sdata);
2595
2596         return err;
2597 }
2598
2599 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2600                                     bool enabled, int timeout)
2601 {
2602         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2603         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2604
2605         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2606                 return -EOPNOTSUPP;
2607
2608         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2609                 return -EOPNOTSUPP;
2610
2611         if (enabled == sdata->u.mgd.powersave &&
2612             timeout == local->dynamic_ps_forced_timeout)
2613                 return 0;
2614
2615         sdata->u.mgd.powersave = enabled;
2616         local->dynamic_ps_forced_timeout = timeout;
2617
2618         /* no change, but if automatic follow powersave */
2619         sdata_lock(sdata);
2620         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2621         sdata_unlock(sdata);
2622
2623         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2624                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2625
2626         ieee80211_recalc_ps(local);
2627         ieee80211_recalc_ps_vif(sdata);
2628
2629         return 0;
2630 }
2631
2632 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2633                                          struct net_device *dev,
2634                                          s32 rssi_thold, u32 rssi_hyst)
2635 {
2636         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2637         struct ieee80211_vif *vif = &sdata->vif;
2638         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2639
2640         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2641             rssi_hyst == bss_conf->cqm_rssi_hyst)
2642                 return 0;
2643
2644         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2645             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2646                 return -EOPNOTSUPP;
2647
2648         bss_conf->cqm_rssi_thold = rssi_thold;
2649         bss_conf->cqm_rssi_hyst = rssi_hyst;
2650         sdata->u.mgd.last_cqm_event_signal = 0;
2651
2652         /* tell the driver upon association, unless already associated */
2653         if (sdata->u.mgd.associated &&
2654             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2655                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2656
2657         return 0;
2658 }
2659
2660 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2661                                       struct net_device *dev,
2662                                       const u8 *addr,
2663                                       const struct cfg80211_bitrate_mask *mask)
2664 {
2665         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2666         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2667         int i, ret;
2668
2669         if (!ieee80211_sdata_running(sdata))
2670                 return -ENETDOWN;
2671
2672         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2673                 ret = drv_set_bitrate_mask(local, sdata, mask);
2674                 if (ret)
2675                         return ret;
2676         }
2677
2678         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2679                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2680                 int j;
2681
2682                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2683                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2684                        sizeof(mask->control[i].ht_mcs));
2685                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2686                        mask->control[i].vht_mcs,
2687                        sizeof(mask->control[i].vht_mcs));
2688
2689                 sdata->rc_has_mcs_mask[i] = false;
2690                 sdata->rc_has_vht_mcs_mask[i] = false;
2691                 if (!sband)
2692                         continue;
2693
2694                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2695                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2696                                 sdata->rc_has_mcs_mask[i] = true;
2697                                 break;
2698                         }
2699                 }
2700
2701                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2702                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2703                                 sdata->rc_has_vht_mcs_mask[i] = true;
2704                                 break;
2705                         }
2706                 }
2707         }
2708
2709         return 0;
2710 }
2711
2712 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2713                                            struct net_device *dev,
2714                                            struct cfg80211_chan_def *chandef,
2715                                            u32 cac_time_ms)
2716 {
2717         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2718         struct ieee80211_local *local = sdata->local;
2719         int err;
2720
2721         mutex_lock(&local->mtx);
2722         if (!list_empty(&local->roc_list) || local->scanning) {
2723                 err = -EBUSY;
2724                 goto out_unlock;
2725         }
2726
2727         /* whatever, but channel contexts should not complain about that one */
2728         sdata->smps_mode = IEEE80211_SMPS_OFF;
2729         sdata->needed_rx_chains = local->rx_chains;
2730
2731         err = ieee80211_vif_use_channel(sdata, chandef,
2732                                         IEEE80211_CHANCTX_SHARED);
2733         if (err)
2734                 goto out_unlock;
2735
2736         ieee80211_queue_delayed_work(&sdata->local->hw,
2737                                      &sdata->dfs_cac_timer_work,
2738                                      msecs_to_jiffies(cac_time_ms));
2739
2740  out_unlock:
2741         mutex_unlock(&local->mtx);
2742         return err;
2743 }
2744
2745 static struct cfg80211_beacon_data *
2746 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2747 {
2748         struct cfg80211_beacon_data *new_beacon;
2749         u8 *pos;
2750         int len;
2751
2752         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2753               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2754               beacon->probe_resp_len;
2755
2756         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2757         if (!new_beacon)
2758                 return NULL;
2759
2760         pos = (u8 *)(new_beacon + 1);
2761         if (beacon->head_len) {
2762                 new_beacon->head_len = beacon->head_len;
2763                 new_beacon->head = pos;
2764                 memcpy(pos, beacon->head, beacon->head_len);
2765                 pos += beacon->head_len;
2766         }
2767         if (beacon->tail_len) {
2768                 new_beacon->tail_len = beacon->tail_len;
2769                 new_beacon->tail = pos;
2770                 memcpy(pos, beacon->tail, beacon->tail_len);
2771                 pos += beacon->tail_len;
2772         }
2773         if (beacon->beacon_ies_len) {
2774                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2775                 new_beacon->beacon_ies = pos;
2776                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2777                 pos += beacon->beacon_ies_len;
2778         }
2779         if (beacon->proberesp_ies_len) {
2780                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2781                 new_beacon->proberesp_ies = pos;
2782                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2783                 pos += beacon->proberesp_ies_len;
2784         }
2785         if (beacon->assocresp_ies_len) {
2786                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2787                 new_beacon->assocresp_ies = pos;
2788                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2789                 pos += beacon->assocresp_ies_len;
2790         }
2791         if (beacon->probe_resp_len) {
2792                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2793                 beacon->probe_resp = pos;
2794                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2795                 pos += beacon->probe_resp_len;
2796         }
2797
2798         return new_beacon;
2799 }
2800
2801 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2802 {
2803         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2804
2805         ieee80211_queue_work(&sdata->local->hw,
2806                              &sdata->csa_finalize_work);
2807 }
2808 EXPORT_SYMBOL(ieee80211_csa_finish);
2809
2810 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2811                                           u32 *changed)
2812 {
2813         int err;
2814
2815         switch (sdata->vif.type) {
2816         case NL80211_IFTYPE_AP:
2817                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2818                                               NULL);
2819                 kfree(sdata->u.ap.next_beacon);
2820                 sdata->u.ap.next_beacon = NULL;
2821
2822                 if (err < 0)
2823                         return err;
2824                 *changed |= err;
2825                 break;
2826         case NL80211_IFTYPE_ADHOC:
2827                 err = ieee80211_ibss_finish_csa(sdata);
2828                 if (err < 0)
2829                         return err;
2830                 *changed |= err;
2831                 break;
2832 #ifdef CONFIG_MAC80211_MESH
2833         case NL80211_IFTYPE_MESH_POINT:
2834                 err = ieee80211_mesh_finish_csa(sdata);
2835                 if (err < 0)
2836                         return err;
2837                 *changed |= err;
2838                 break;
2839 #endif
2840         default:
2841                 WARN_ON(1);
2842                 return -EINVAL;
2843         }
2844
2845         return 0;
2846 }
2847
2848 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2849 {
2850         struct ieee80211_local *local = sdata->local;
2851         u32 changed = 0;
2852         int err;
2853
2854         sdata_assert_lock(sdata);
2855         lockdep_assert_held(&local->mtx);
2856         lockdep_assert_held(&local->chanctx_mtx);
2857
2858         /*
2859          * using reservation isn't immediate as it may be deferred until later
2860          * with multi-vif. once reservation is complete it will re-schedule the
2861          * work with no reserved_chanctx so verify chandef to check if it
2862          * completed successfully
2863          */
2864
2865         if (sdata->reserved_chanctx) {
2866                 /*
2867                  * with multi-vif csa driver may call ieee80211_csa_finish()
2868                  * many times while waiting for other interfaces to use their
2869                  * reservations
2870                  */
2871                 if (sdata->reserved_ready)
2872                         return 0;
2873
2874                 return ieee80211_vif_use_reserved_context(sdata);
2875         }
2876
2877         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2878                                         &sdata->csa_chandef))
2879                 return -EINVAL;
2880
2881         sdata->vif.csa_active = false;
2882
2883         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2884         if (err)
2885                 return err;
2886
2887         ieee80211_bss_info_change_notify(sdata, changed);
2888
2889         if (sdata->csa_block_tx) {
2890                 ieee80211_wake_vif_queues(local, sdata,
2891                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2892                 sdata->csa_block_tx = false;
2893         }
2894
2895         err = drv_post_channel_switch(sdata);
2896         if (err)
2897                 return err;
2898
2899         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2900
2901         return 0;
2902 }
2903
2904 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2905 {
2906         if (__ieee80211_csa_finalize(sdata)) {
2907                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2908                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2909                                     GFP_KERNEL);
2910         }
2911 }
2912
2913 void ieee80211_csa_finalize_work(struct work_struct *work)
2914 {
2915         struct ieee80211_sub_if_data *sdata =
2916                 container_of(work, struct ieee80211_sub_if_data,
2917                              csa_finalize_work);
2918         struct ieee80211_local *local = sdata->local;
2919
2920         sdata_lock(sdata);
2921         mutex_lock(&local->mtx);
2922         mutex_lock(&local->chanctx_mtx);
2923
2924         /* AP might have been stopped while waiting for the lock. */
2925         if (!sdata->vif.csa_active)
2926                 goto unlock;
2927
2928         if (!ieee80211_sdata_running(sdata))
2929                 goto unlock;
2930
2931         ieee80211_csa_finalize(sdata);
2932
2933 unlock:
2934         mutex_unlock(&local->chanctx_mtx);
2935         mutex_unlock(&local->mtx);
2936         sdata_unlock(sdata);
2937 }
2938
2939 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2940                                     struct cfg80211_csa_settings *params,
2941                                     u32 *changed)
2942 {
2943         struct ieee80211_csa_settings csa = {};
2944         int err;
2945
2946         switch (sdata->vif.type) {
2947         case NL80211_IFTYPE_AP:
2948                 sdata->u.ap.next_beacon =
2949                         cfg80211_beacon_dup(&params->beacon_after);
2950                 if (!sdata->u.ap.next_beacon)
2951                         return -ENOMEM;
2952
2953                 /*
2954                  * With a count of 0, we don't have to wait for any
2955                  * TBTT before switching, so complete the CSA
2956                  * immediately.  In theory, with a count == 1 we
2957                  * should delay the switch until just before the next
2958                  * TBTT, but that would complicate things so we switch
2959                  * immediately too.  If we would delay the switch
2960                  * until the next TBTT, we would have to set the probe
2961                  * response here.
2962                  *
2963                  * TODO: A channel switch with count <= 1 without
2964                  * sending a CSA action frame is kind of useless,
2965                  * because the clients won't know we're changing
2966                  * channels.  The action frame must be implemented
2967                  * either here or in the userspace.
2968                  */
2969                 if (params->count <= 1)
2970                         break;
2971
2972                 if ((params->n_counter_offsets_beacon >
2973                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2974                     (params->n_counter_offsets_presp >
2975                      IEEE80211_MAX_CSA_COUNTERS_NUM))
2976                         return -EINVAL;
2977
2978                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2979                 csa.counter_offsets_presp = params->counter_offsets_presp;
2980                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2981                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2982                 csa.count = params->count;
2983
2984                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2985                 if (err < 0) {
2986                         kfree(sdata->u.ap.next_beacon);
2987                         return err;
2988                 }
2989                 *changed |= err;
2990
2991                 break;
2992         case NL80211_IFTYPE_ADHOC:
2993                 if (!sdata->vif.bss_conf.ibss_joined)
2994                         return -EINVAL;
2995
2996                 if (params->chandef.width != sdata->u.ibss.chandef.width)
2997                         return -EINVAL;
2998
2999                 switch (params->chandef.width) {
3000                 case NL80211_CHAN_WIDTH_40:
3001                         if (cfg80211_get_chandef_type(&params->chandef) !=
3002                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3003                                 return -EINVAL;
3004                 case NL80211_CHAN_WIDTH_5:
3005                 case NL80211_CHAN_WIDTH_10:
3006                 case NL80211_CHAN_WIDTH_20_NOHT:
3007                 case NL80211_CHAN_WIDTH_20:
3008                         break;
3009                 default:
3010                         return -EINVAL;
3011                 }
3012
3013                 /* changes into another band are not supported */
3014                 if (sdata->u.ibss.chandef.chan->band !=
3015                     params->chandef.chan->band)
3016                         return -EINVAL;
3017
3018                 /* see comments in the NL80211_IFTYPE_AP block */
3019                 if (params->count > 1) {
3020                         err = ieee80211_ibss_csa_beacon(sdata, params);
3021                         if (err < 0)
3022                                 return err;
3023                         *changed |= err;
3024                 }
3025
3026                 ieee80211_send_action_csa(sdata, params);
3027
3028                 break;
3029 #ifdef CONFIG_MAC80211_MESH
3030         case NL80211_IFTYPE_MESH_POINT: {
3031                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3032
3033                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3034                         return -EINVAL;
3035
3036                 /* changes into another band are not supported */
3037                 if (sdata->vif.bss_conf.chandef.chan->band !=
3038                     params->chandef.chan->band)
3039                         return -EINVAL;
3040
3041                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3042                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3043                         if (!ifmsh->pre_value)
3044                                 ifmsh->pre_value = 1;
3045                         else
3046                                 ifmsh->pre_value++;
3047                 }
3048
3049                 /* see comments in the NL80211_IFTYPE_AP block */
3050                 if (params->count > 1) {
3051                         err = ieee80211_mesh_csa_beacon(sdata, params);
3052                         if (err < 0) {
3053                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3054                                 return err;
3055                         }
3056                         *changed |= err;
3057                 }
3058
3059                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3060                         ieee80211_send_action_csa(sdata, params);
3061
3062                 break;
3063                 }
3064 #endif
3065         default:
3066                 return -EOPNOTSUPP;
3067         }
3068
3069         return 0;
3070 }
3071
3072 static int
3073 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3074                            struct cfg80211_csa_settings *params)
3075 {
3076         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3077         struct ieee80211_local *local = sdata->local;
3078         struct ieee80211_channel_switch ch_switch;
3079         struct ieee80211_chanctx_conf *conf;
3080         struct ieee80211_chanctx *chanctx;
3081         u32 changed = 0;
3082         int err;
3083
3084         sdata_assert_lock(sdata);
3085         lockdep_assert_held(&local->mtx);
3086
3087         if (!list_empty(&local->roc_list) || local->scanning)
3088                 return -EBUSY;
3089
3090         if (sdata->wdev.cac_started)
3091                 return -EBUSY;
3092
3093         if (cfg80211_chandef_identical(&params->chandef,
3094                                        &sdata->vif.bss_conf.chandef))
3095                 return -EINVAL;
3096
3097         /* don't allow another channel switch if one is already active. */
3098         if (sdata->vif.csa_active)
3099                 return -EBUSY;
3100
3101         mutex_lock(&local->chanctx_mtx);
3102         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3103                                          lockdep_is_held(&local->chanctx_mtx));
3104         if (!conf) {
3105                 err = -EBUSY;
3106                 goto out;
3107         }
3108
3109         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3110
3111         ch_switch.timestamp = 0;
3112         ch_switch.device_timestamp = 0;
3113         ch_switch.block_tx = params->block_tx;
3114         ch_switch.chandef = params->chandef;
3115         ch_switch.count = params->count;
3116
3117         err = drv_pre_channel_switch(sdata, &ch_switch);
3118         if (err)
3119                 goto out;
3120
3121         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3122                                             chanctx->mode,
3123                                             params->radar_required);
3124         if (err)
3125                 goto out;
3126
3127         /* if reservation is invalid then this will fail */
3128         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3129         if (err) {
3130                 ieee80211_vif_unreserve_chanctx(sdata);
3131                 goto out;
3132         }
3133
3134         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3135         if (err) {
3136                 ieee80211_vif_unreserve_chanctx(sdata);
3137                 goto out;
3138         }
3139
3140         sdata->csa_chandef = params->chandef;
3141         sdata->csa_block_tx = params->block_tx;
3142         sdata->vif.csa_active = true;
3143
3144         if (sdata->csa_block_tx)
3145                 ieee80211_stop_vif_queues(local, sdata,
3146                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3147
3148         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3149                                           params->count);
3150
3151         if (changed) {
3152                 ieee80211_bss_info_change_notify(sdata, changed);
3153                 drv_channel_switch_beacon(sdata, &params->chandef);
3154         } else {
3155                 /* if the beacon didn't change, we can finalize immediately */
3156                 ieee80211_csa_finalize(sdata);
3157         }
3158
3159 out:
3160         mutex_unlock(&local->chanctx_mtx);
3161         return err;
3162 }
3163
3164 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3165                              struct cfg80211_csa_settings *params)
3166 {
3167         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3168         struct ieee80211_local *local = sdata->local;
3169         int err;
3170
3171         mutex_lock(&local->mtx);
3172         err = __ieee80211_channel_switch(wiphy, dev, params);
3173         mutex_unlock(&local->mtx);
3174
3175         return err;
3176 }
3177
3178 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3179 {
3180         lockdep_assert_held(&local->mtx);
3181
3182         local->roc_cookie_counter++;
3183
3184         /* wow, you wrapped 64 bits ... more likely a bug */
3185         if (WARN_ON(local->roc_cookie_counter == 0))
3186                 local->roc_cookie_counter++;
3187
3188         return local->roc_cookie_counter;
3189 }
3190
3191 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3192                              u64 *cookie, gfp_t gfp)
3193 {
3194         unsigned long spin_flags;
3195         struct sk_buff *ack_skb;
3196         int id;
3197
3198         ack_skb = skb_copy(skb, gfp);
3199         if (!ack_skb)
3200                 return -ENOMEM;
3201
3202         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3203         id = idr_alloc(&local->ack_status_frames, ack_skb,
3204                        1, 0x10000, GFP_ATOMIC);
3205         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3206
3207         if (id < 0) {
3208                 kfree_skb(ack_skb);
3209                 return -ENOMEM;
3210         }
3211
3212         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3213
3214         *cookie = ieee80211_mgmt_tx_cookie(local);
3215         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3216
3217         return 0;
3218 }
3219
3220 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3221                                           struct wireless_dev *wdev,
3222                                           u16 frame_type, bool reg)
3223 {
3224         struct ieee80211_local *local = wiphy_priv(wiphy);
3225         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3226
3227         switch (frame_type) {
3228         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3229                 if (reg) {
3230                         local->probe_req_reg++;
3231                         sdata->vif.probe_req_reg++;
3232                 } else {
3233                         if (local->probe_req_reg)
3234                                 local->probe_req_reg--;
3235
3236                         if (sdata->vif.probe_req_reg)
3237                                 sdata->vif.probe_req_reg--;
3238                 }
3239
3240                 if (!local->open_count)
3241                         break;
3242
3243                 if (sdata->vif.probe_req_reg == 1)
3244                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3245                                                 FIF_PROBE_REQ);
3246                 else if (sdata->vif.probe_req_reg == 0)
3247                         drv_config_iface_filter(local, sdata, 0,
3248                                                 FIF_PROBE_REQ);
3249
3250                 ieee80211_configure_filter(local);
3251                 break;
3252         default:
3253                 break;
3254         }
3255 }
3256
3257 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3258 {
3259         struct ieee80211_local *local = wiphy_priv(wiphy);
3260
3261         if (local->started)
3262                 return -EOPNOTSUPP;
3263
3264         return drv_set_antenna(local, tx_ant, rx_ant);
3265 }
3266
3267 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3268 {
3269         struct ieee80211_local *local = wiphy_priv(wiphy);
3270
3271         return drv_get_antenna(local, tx_ant, rx_ant);
3272 }
3273
3274 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3275                                     struct net_device *dev,
3276                                     struct cfg80211_gtk_rekey_data *data)
3277 {
3278         struct ieee80211_local *local = wiphy_priv(wiphy);
3279         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3280
3281         if (!local->ops->set_rekey_data)
3282                 return -EOPNOTSUPP;
3283
3284         drv_set_rekey_data(local, sdata, data);
3285
3286         return 0;
3287 }
3288
3289 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3290                                   const u8 *peer, u64 *cookie)
3291 {
3292         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3293         struct ieee80211_local *local = sdata->local;
3294         struct ieee80211_qos_hdr *nullfunc;
3295         struct sk_buff *skb;
3296         int size = sizeof(*nullfunc);
3297         __le16 fc;
3298         bool qos;
3299         struct ieee80211_tx_info *info;
3300         struct sta_info *sta;
3301         struct ieee80211_chanctx_conf *chanctx_conf;
3302         enum nl80211_band band;
3303         int ret;
3304
3305         /* the lock is needed to assign the cookie later */
3306         mutex_lock(&local->mtx);
3307
3308         rcu_read_lock();
3309         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3310         if (WARN_ON(!chanctx_conf)) {
3311                 ret = -EINVAL;
3312                 goto unlock;
3313         }
3314         band = chanctx_conf->def.chan->band;
3315         sta = sta_info_get_bss(sdata, peer);
3316         if (sta) {
3317                 qos = sta->sta.wme;
3318         } else {
3319                 ret = -ENOLINK;
3320                 goto unlock;
3321         }
3322
3323         if (qos) {
3324                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3325                                  IEEE80211_STYPE_QOS_NULLFUNC |
3326                                  IEEE80211_FCTL_FROMDS);
3327         } else {
3328                 size -= 2;
3329                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3330                                  IEEE80211_STYPE_NULLFUNC |
3331                                  IEEE80211_FCTL_FROMDS);
3332         }
3333
3334         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3335         if (!skb) {
3336                 ret = -ENOMEM;
3337                 goto unlock;
3338         }
3339
3340         skb->dev = dev;
3341
3342         skb_reserve(skb, local->hw.extra_tx_headroom);
3343
3344         nullfunc = (void *) skb_put(skb, size);
3345         nullfunc->frame_control = fc;
3346         nullfunc->duration_id = 0;
3347         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3348         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3349         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3350         nullfunc->seq_ctrl = 0;
3351
3352         info = IEEE80211_SKB_CB(skb);
3353
3354         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3355                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3356         info->band = band;
3357
3358         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3359         skb->priority = 7;
3360         if (qos)
3361                 nullfunc->qos_ctrl = cpu_to_le16(7);
3362
3363         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3364         if (ret) {
3365                 kfree_skb(skb);
3366                 goto unlock;
3367         }
3368
3369         local_bh_disable();
3370         ieee80211_xmit(sdata, sta, skb);
3371         local_bh_enable();
3372
3373         ret = 0;
3374 unlock:
3375         rcu_read_unlock();
3376         mutex_unlock(&local->mtx);
3377
3378         return ret;
3379 }
3380
3381 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3382                                      struct wireless_dev *wdev,
3383                                      struct cfg80211_chan_def *chandef)
3384 {
3385         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3386         struct ieee80211_local *local = wiphy_priv(wiphy);
3387         struct ieee80211_chanctx_conf *chanctx_conf;
3388         int ret = -ENODATA;
3389
3390         rcu_read_lock();
3391         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3392         if (chanctx_conf) {
3393                 *chandef = sdata->vif.bss_conf.chandef;
3394                 ret = 0;
3395         } else if (local->open_count > 0 &&
3396                    local->open_count == local->monitors &&
3397                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3398                 if (local->use_chanctx)
3399                         *chandef = local->monitor_chandef;
3400                 else
3401                         *chandef = local->_oper_chandef;
3402                 ret = 0;
3403         }
3404         rcu_read_unlock();
3405
3406         return ret;
3407 }
3408
3409 #ifdef CONFIG_PM
3410 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3411 {
3412         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3413 }
3414 #endif
3415
3416 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3417                                  struct net_device *dev,
3418                                  struct cfg80211_qos_map *qos_map)
3419 {
3420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3421         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3422
3423         if (qos_map) {
3424                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3425                 if (!new_qos_map)
3426                         return -ENOMEM;
3427                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3428         } else {
3429                 /* A NULL qos_map was passed to disable QoS mapping */
3430                 new_qos_map = NULL;
3431         }
3432
3433         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3434         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3435         if (old_qos_map)
3436                 kfree_rcu(old_qos_map, rcu_head);
3437
3438         return 0;
3439 }
3440
3441 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3442                                       struct net_device *dev,
3443                                       struct cfg80211_chan_def *chandef)
3444 {
3445         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3446         int ret;
3447         u32 changed = 0;
3448
3449         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3450         if (ret == 0)
3451                 ieee80211_bss_info_change_notify(sdata, changed);
3452
3453         return ret;
3454 }
3455
3456 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3457                                u8 tsid, const u8 *peer, u8 up,
3458                                u16 admitted_time)
3459 {
3460         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3461         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3462         int ac = ieee802_1d_to_ac[up];
3463
3464         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3465                 return -EOPNOTSUPP;
3466
3467         if (!(sdata->wmm_acm & BIT(up)))
3468                 return -EINVAL;
3469
3470         if (ifmgd->tx_tspec[ac].admitted_time)
3471                 return -EBUSY;
3472
3473         if (admitted_time) {
3474                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3475                 ifmgd->tx_tspec[ac].tsid = tsid;
3476                 ifmgd->tx_tspec[ac].up = up;
3477         }
3478
3479         return 0;
3480 }
3481
3482 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3483                                u8 tsid, const u8 *peer)
3484 {
3485         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3486         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3487         struct ieee80211_local *local = wiphy_priv(wiphy);
3488         int ac;
3489
3490         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3491                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3492
3493                 /* skip unused entries */
3494                 if (!tx_tspec->admitted_time)
3495                         continue;
3496
3497                 if (tx_tspec->tsid != tsid)
3498                         continue;
3499
3500                 /* due to this new packets will be reassigned to non-ACM ACs */
3501                 tx_tspec->up = -1;
3502
3503                 /* Make sure that all packets have been sent to avoid to
3504                  * restore the QoS params on packets that are still on the
3505                  * queues.
3506                  */
3507                 synchronize_net();
3508                 ieee80211_flush_queues(local, sdata, false);
3509
3510                 /* restore the normal QoS parameters
3511                  * (unconditionally to avoid races)
3512                  */
3513                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3514                 tx_tspec->downgraded = false;
3515                 ieee80211_sta_handle_tspec_ac_params(sdata);
3516
3517                 /* finally clear all the data */
3518                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3519
3520                 return 0;
3521         }
3522
3523         return -ENOENT;
3524 }
3525
3526 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3527                                    u8 inst_id,
3528                                    enum nl80211_nan_func_term_reason reason,
3529                                    gfp_t gfp)
3530 {
3531         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3532         struct cfg80211_nan_func *func;
3533         u64 cookie;
3534
3535         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3536                 return;
3537
3538         spin_lock_bh(&sdata->u.nan.func_lock);
3539
3540         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3541         if (WARN_ON(!func)) {
3542                 spin_unlock_bh(&sdata->u.nan.func_lock);
3543                 return;
3544         }
3545
3546         cookie = func->cookie;
3547         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3548
3549         spin_unlock_bh(&sdata->u.nan.func_lock);
3550
3551         cfg80211_free_nan_func(func);
3552
3553         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3554                                      reason, cookie, gfp);
3555 }
3556 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3557
3558 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3559                               struct cfg80211_nan_match_params *match,
3560                               gfp_t gfp)
3561 {
3562         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3563         struct cfg80211_nan_func *func;
3564
3565         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3566                 return;
3567
3568         spin_lock_bh(&sdata->u.nan.func_lock);
3569
3570         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3571         if (WARN_ON(!func)) {
3572                 spin_unlock_bh(&sdata->u.nan.func_lock);
3573                 return;
3574         }
3575         match->cookie = func->cookie;
3576
3577         spin_unlock_bh(&sdata->u.nan.func_lock);
3578
3579         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3580 }
3581 EXPORT_SYMBOL(ieee80211_nan_func_match);
3582
3583 const struct cfg80211_ops mac80211_config_ops = {
3584         .add_virtual_intf = ieee80211_add_iface,
3585         .del_virtual_intf = ieee80211_del_iface,
3586         .change_virtual_intf = ieee80211_change_iface,
3587         .start_p2p_device = ieee80211_start_p2p_device,
3588         .stop_p2p_device = ieee80211_stop_p2p_device,
3589         .add_key = ieee80211_add_key,
3590         .del_key = ieee80211_del_key,
3591         .get_key = ieee80211_get_key,
3592         .set_default_key = ieee80211_config_default_key,
3593         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3594         .start_ap = ieee80211_start_ap,
3595         .change_beacon = ieee80211_change_beacon,
3596         .stop_ap = ieee80211_stop_ap,
3597         .add_station = ieee80211_add_station,
3598         .del_station = ieee80211_del_station,
3599         .change_station = ieee80211_change_station,
3600         .get_station = ieee80211_get_station,
3601         .dump_station = ieee80211_dump_station,
3602         .dump_survey = ieee80211_dump_survey,
3603 #ifdef CONFIG_MAC80211_MESH
3604         .add_mpath = ieee80211_add_mpath,
3605         .del_mpath = ieee80211_del_mpath,
3606         .change_mpath = ieee80211_change_mpath,
3607         .get_mpath = ieee80211_get_mpath,
3608         .dump_mpath = ieee80211_dump_mpath,
3609         .get_mpp = ieee80211_get_mpp,
3610         .dump_mpp = ieee80211_dump_mpp,
3611         .update_mesh_config = ieee80211_update_mesh_config,
3612         .get_mesh_config = ieee80211_get_mesh_config,
3613         .join_mesh = ieee80211_join_mesh,
3614         .leave_mesh = ieee80211_leave_mesh,
3615 #endif
3616         .join_ocb = ieee80211_join_ocb,
3617         .leave_ocb = ieee80211_leave_ocb,
3618         .change_bss = ieee80211_change_bss,
3619         .set_txq_params = ieee80211_set_txq_params,
3620         .set_monitor_channel = ieee80211_set_monitor_channel,
3621         .suspend = ieee80211_suspend,
3622         .resume = ieee80211_resume,
3623         .scan = ieee80211_scan,
3624         .abort_scan = ieee80211_abort_scan,
3625         .sched_scan_start = ieee80211_sched_scan_start,
3626         .sched_scan_stop = ieee80211_sched_scan_stop,
3627         .auth = ieee80211_auth,
3628         .assoc = ieee80211_assoc,
3629         .deauth = ieee80211_deauth,
3630         .disassoc = ieee80211_disassoc,
3631         .join_ibss = ieee80211_join_ibss,
3632         .leave_ibss = ieee80211_leave_ibss,
3633         .set_mcast_rate = ieee80211_set_mcast_rate,
3634         .set_wiphy_params = ieee80211_set_wiphy_params,
3635         .set_tx_power = ieee80211_set_tx_power,
3636         .get_tx_power = ieee80211_get_tx_power,
3637         .set_wds_peer = ieee80211_set_wds_peer,
3638         .rfkill_poll = ieee80211_rfkill_poll,
3639         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3640         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3641         .set_power_mgmt = ieee80211_set_power_mgmt,
3642         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3643         .remain_on_channel = ieee80211_remain_on_channel,
3644         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3645         .mgmt_tx = ieee80211_mgmt_tx,
3646         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3647         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3648         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3649         .set_antenna = ieee80211_set_antenna,
3650         .get_antenna = ieee80211_get_antenna,
3651         .set_rekey_data = ieee80211_set_rekey_data,
3652         .tdls_oper = ieee80211_tdls_oper,
3653         .tdls_mgmt = ieee80211_tdls_mgmt,
3654         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3655         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3656         .probe_client = ieee80211_probe_client,
3657         .set_noack_map = ieee80211_set_noack_map,
3658 #ifdef CONFIG_PM
3659         .set_wakeup = ieee80211_set_wakeup,
3660 #endif
3661         .get_channel = ieee80211_cfg_get_channel,
3662         .start_radar_detection = ieee80211_start_radar_detection,
3663         .channel_switch = ieee80211_channel_switch,
3664         .set_qos_map = ieee80211_set_qos_map,
3665         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3666         .add_tx_ts = ieee80211_add_tx_ts,
3667         .del_tx_ts = ieee80211_del_tx_ts,
3668         .start_nan = ieee80211_start_nan,
3669         .stop_nan = ieee80211_stop_nan,
3670         .nan_change_conf = ieee80211_nan_change_conf,
3671         .add_nan_func = ieee80211_add_nan_func,
3672         .del_nan_func = ieee80211_del_nan_func,
3673 };