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) 2015-2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  *
   9  * This file is GPLv2 as found in COPYING.
  10  */
  11
  12 #include <linux/ieee80211.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/rtnetlink.h>
  15 #include <linux/slab.h>
  16 #include <net/net_namespace.h>
  17 #include <linux/rcupdate.h>
  18 #include <linux/if_ether.h>
  19 #include <net/cfg80211.h>
  20 #include "ieee80211_i.h"
  21 #include "driver-ops.h"
  22 #include "rate.h"
  23 #include "mesh.h"
  24 #include "wme.h"
  25
  26 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  27                                          struct vif_params *params)
  28 {
  29         bool mu_mimo_groups = false;
  30         bool mu_mimo_follow = false;
  31
  32         if (params->vht_mumimo_groups) {
  33                 u64 membership;
  34
  35                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  36
  37                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  38                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  39                 memcpy(sdata->vif.bss_conf.mu_group.position,
  40                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  41                        WLAN_USER_POSITION_LEN);
  42                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  43                 /* don't care about endianness - just check for 0 */
  44                 memcpy(&membership, params->vht_mumimo_groups,
  45                        WLAN_MEMBERSHIP_LEN);
  46                 mu_mimo_groups = membership != 0;
  47         }
  48
  49         if (params->vht_mumimo_follow_addr) {
  50                 mu_mimo_follow =
  51                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  52                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  53                                 params->vht_mumimo_follow_addr);
  54         }
  55
  56         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  57 }
  58
  59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  60                                      struct vif_params *params)
  61 {
  62         struct ieee80211_local *local = sdata->local;
  63         struct ieee80211_sub_if_data *monitor_sdata;
  64
  65         /* check flags first */
  66         if (params->flags && ieee80211_sdata_running(sdata)) {
  67                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  68
  69                 /*
  70                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  71                  * MONITOR_FLAG_ACTIVE to be changed while the
  72                  * interface is up.
  73                  * Else we would need to add a lot of cruft
  74                  * to update everything:
  75                  *      cooked_mntrs, monitor and all fif_* counters
  76                  *      reconfigure hardware
  77                  */
  78                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  79                         return -EBUSY;
  80         }
  81
  82         /* also validate MU-MIMO change */
  83         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  84
  85         if (!monitor_sdata &&
  86             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  87                 return -EOPNOTSUPP;
  88
  89         /* apply all changes now - no failures allowed */
  90
  91         if (monitor_sdata)
  92                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  93
  94         if (params->flags) {
  95                 if (ieee80211_sdata_running(sdata)) {
  96                         ieee80211_adjust_monitor_flags(sdata, -1);
  97                         sdata->u.mntr.flags = params->flags;
  98                         ieee80211_adjust_monitor_flags(sdata, 1);
  99
 100                         ieee80211_configure_filter(local);
 101                 } else {
 102                         /*
 103                          * Because the interface is down, ieee80211_do_stop
 104                          * and ieee80211_do_open take care of "everything"
 105                          * mentioned in the comment above.
 106                          */
 107                         sdata->u.mntr.flags = params->flags;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 115                                                 const char *name,
 116                                                 unsigned char name_assign_type,
 117                                                 enum nl80211_iftype type,
 118                                                 struct vif_params *params)
 119 {
 120         struct ieee80211_local *local = wiphy_priv(wiphy);
 121         struct wireless_dev *wdev;
 122         struct ieee80211_sub_if_data *sdata;
 123         int err;
 124
 125         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 126         if (err)
 127                 return ERR_PTR(err);
 128
 129         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 130
 131         if (type == NL80211_IFTYPE_MONITOR) {
 132                 err = ieee80211_set_mon_options(sdata, params);
 133                 if (err) {
 134                         ieee80211_if_remove(sdata);
 135                         return NULL;
 136                 }
 137         }
 138
 139         return wdev;
 140 }
 141
 142 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 143 {
 144         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 145
 146         return 0;
 147 }
 148
 149 static int ieee80211_change_iface(struct wiphy *wiphy,
 150                                   struct net_device *dev,
 151                                   enum nl80211_iftype type,
 152                                   struct vif_params *params)
 153 {
 154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 155         int ret;
 156
 157         ret = ieee80211_if_change_type(sdata, type);
 158         if (ret)
 159                 return ret;
 160
 161         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 165                 sdata->u.mgd.use_4addr = params->use_4addr;
 166         }
 167
 168         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 169                 ret = ieee80211_set_mon_options(sdata, params);
 170                 if (ret)
 171                         return ret;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 178                                       struct wireless_dev *wdev)
 179 {
 180         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 181         int ret;
 182
 183         mutex_lock(&sdata->local->chanctx_mtx);
 184         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 185         mutex_unlock(&sdata->local->chanctx_mtx);
 186         if (ret < 0)
 187                 return ret;
 188
 189         return ieee80211_do_open(wdev, true);
 190 }
 191
 192 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 193                                       struct wireless_dev *wdev)
 194 {
 195         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 196 }
 197
 198 static int ieee80211_start_nan(struct wiphy *wiphy,
 199                                struct wireless_dev *wdev,
 200                                struct cfg80211_nan_conf *conf)
 201 {
 202         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 203         int ret;
 204
 205         mutex_lock(&sdata->local->chanctx_mtx);
 206         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 207         mutex_unlock(&sdata->local->chanctx_mtx);
 208         if (ret < 0)
 209                 return ret;
 210
 211         ret = ieee80211_do_open(wdev, true);
 212         if (ret)
 213                 return ret;
 214
 215         ret = drv_start_nan(sdata->local, sdata, conf);
 216         if (ret)
 217                 ieee80211_sdata_stop(sdata);
 218
 219         sdata->u.nan.conf = *conf;
 220
 221         return ret;
 222 }
 223
 224 static void ieee80211_stop_nan(struct wiphy *wiphy,
 225                                struct wireless_dev *wdev)
 226 {
 227         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 228
 229         drv_stop_nan(sdata->local, sdata);
 230         ieee80211_sdata_stop(sdata);
 231 }
 232
 233 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 234                                      struct wireless_dev *wdev,
 235                                      struct cfg80211_nan_conf *conf,
 236                                      u32 changes)
 237 {
 238         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 239         struct cfg80211_nan_conf new_conf;
 240         int ret = 0;
 241
 242         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 243                 return -EOPNOTSUPP;
 244
 245         if (!ieee80211_sdata_running(sdata))
 246                 return -ENETDOWN;
 247
 248         new_conf = sdata->u.nan.conf;
 249
 250         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 251                 new_conf.master_pref = conf->master_pref;
 252
 253         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 254                 new_conf.bands = conf->bands;
 255
 256         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 257         if (!ret)
 258                 sdata->u.nan.conf = new_conf;
 259
 260         return ret;
 261 }
 262
 263 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 264                                   struct wireless_dev *wdev,
 265                                   struct cfg80211_nan_func *nan_func)
 266 {
 267         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 268         int ret;
 269
 270         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 271                 return -EOPNOTSUPP;
 272
 273         if (!ieee80211_sdata_running(sdata))
 274                 return -ENETDOWN;
 275
 276         spin_lock_bh(&sdata->u.nan.func_lock);
 277
 278         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 279                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 280                         GFP_ATOMIC);
 281         spin_unlock_bh(&sdata->u.nan.func_lock);
 282
 283         if (ret < 0)
 284                 return ret;
 285
 286         nan_func->instance_id = ret;
 287
 288         WARN_ON(nan_func->instance_id == 0);
 289
 290         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 291         if (ret) {
 292                 spin_lock_bh(&sdata->u.nan.func_lock);
 293                 idr_remove(&sdata->u.nan.function_inst_ids,
 294                            nan_func->instance_id);
 295                 spin_unlock_bh(&sdata->u.nan.func_lock);
 296         }
 297
 298         return ret;
 299 }
 300
 301 static struct cfg80211_nan_func *
 302 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 303                                   u64 cookie)
 304 {
 305         struct cfg80211_nan_func *func;
 306         int id;
 307
 308         lockdep_assert_held(&sdata->u.nan.func_lock);
 309
 310         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 311                 if (func->cookie == cookie)
 312                         return func;
 313         }
 314
 315         return NULL;
 316 }
 317
 318 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 319                                   struct wireless_dev *wdev, u64 cookie)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 322         struct cfg80211_nan_func *func;
 323         u8 instance_id = 0;
 324
 325         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 326             !ieee80211_sdata_running(sdata))
 327                 return;
 328
 329         spin_lock_bh(&sdata->u.nan.func_lock);
 330
 331         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 332         if (func)
 333                 instance_id = func->instance_id;
 334
 335         spin_unlock_bh(&sdata->u.nan.func_lock);
 336
 337         if (instance_id)
 338                 drv_del_nan_func(sdata->local, sdata, instance_id);
 339 }
 340
 341 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 342                                   struct net_device *dev,
 343                                   u16 noack_map)
 344 {
 345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 346
 347         sdata->noack_map = noack_map;
 348
 349         ieee80211_check_fast_xmit_iface(sdata);
 350
 351         return 0;
 352 }
 353
 354 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 355                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 356                              struct key_params *params)
 357 {
 358         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 359         struct ieee80211_local *local = sdata->local;
 360         struct sta_info *sta = NULL;
 361         const struct ieee80211_cipher_scheme *cs = NULL;
 362         struct ieee80211_key *key;
 363         int err;
 364
 365         if (!ieee80211_sdata_running(sdata))
 366                 return -ENETDOWN;
 367
 368         /* reject WEP and TKIP keys if WEP failed to initialize */
 369         switch (params->cipher) {
 370         case WLAN_CIPHER_SUITE_WEP40:
 371         case WLAN_CIPHER_SUITE_TKIP:
 372         case WLAN_CIPHER_SUITE_WEP104:
 373                 if (IS_ERR(local->wep_tx_tfm))
 374                         return -EINVAL;
 375                 break;
 376         case WLAN_CIPHER_SUITE_CCMP:
 377         case WLAN_CIPHER_SUITE_CCMP_256:
 378         case WLAN_CIPHER_SUITE_AES_CMAC:
 379         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 380         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 382         case WLAN_CIPHER_SUITE_GCMP:
 383         case WLAN_CIPHER_SUITE_GCMP_256:
 384                 break;
 385         default:
 386                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 387                 break;
 388         }
 389
 390         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 391                                   params->key, params->seq_len, params->seq,
 392                                   cs);
 393         if (IS_ERR(key))
 394                 return PTR_ERR(key);
 395
 396         if (pairwise)
 397                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 398
 399         mutex_lock(&local->sta_mtx);
 400
 401         if (mac_addr) {
 402                 sta = sta_info_get_bss(sdata, mac_addr);
 403                 /*
 404                  * The ASSOC test makes sure the driver is ready to
 405                  * receive the key. When wpa_supplicant has roamed
 406                  * using FT, it attempts to set the key before
 407                  * association has completed, this rejects that attempt
 408                  * so it will set the key again after association.
 409                  *
 410                  * TODO: accept the key if we have a station entry and
 411                  *       add it to the device after the station.
 412                  */
 413                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 414                         ieee80211_key_free_unused(key);
 415                         err = -ENOENT;
 416                         goto out_unlock;
 417                 }
 418         }
 419
 420         switch (sdata->vif.type) {
 421         case NL80211_IFTYPE_STATION:
 422                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 423                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 424                 break;
 425         case NL80211_IFTYPE_AP:
 426         case NL80211_IFTYPE_AP_VLAN:
 427                 /* Keys without a station are used for TX only */
 428                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 429                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 430                 break;
 431         case NL80211_IFTYPE_ADHOC:
 432                 /* no MFP (yet) */
 433                 break;
 434         case NL80211_IFTYPE_MESH_POINT:
 435 #ifdef CONFIG_MAC80211_MESH
 436                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 437                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 438                 break;
 439 #endif
 440         case NL80211_IFTYPE_WDS:
 441         case NL80211_IFTYPE_MONITOR:
 442         case NL80211_IFTYPE_P2P_DEVICE:
 443         case NL80211_IFTYPE_NAN:
 444         case NL80211_IFTYPE_UNSPECIFIED:
 445         case NUM_NL80211_IFTYPES:
 446         case NL80211_IFTYPE_P2P_CLIENT:
 447         case NL80211_IFTYPE_P2P_GO:
 448         case NL80211_IFTYPE_OCB:
 449                 /* shouldn't happen */
 450                 WARN_ON_ONCE(1);
 451                 break;
 452         }
 453
 454         if (sta)
 455                 sta->cipher_scheme = cs;
 456
 457         err = ieee80211_key_link(key, sdata, sta);
 458
 459  out_unlock:
 460         mutex_unlock(&local->sta_mtx);
 461
 462         return err;
 463 }
 464
 465 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 466                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 467 {
 468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 469         struct ieee80211_local *local = sdata->local;
 470         struct sta_info *sta;
 471         struct ieee80211_key *key = NULL;
 472         int ret;
 473
 474         mutex_lock(&local->sta_mtx);
 475         mutex_lock(&local->key_mtx);
 476
 477         if (mac_addr) {
 478                 ret = -ENOENT;
 479
 480                 sta = sta_info_get_bss(sdata, mac_addr);
 481                 if (!sta)
 482                         goto out_unlock;
 483
 484                 if (pairwise)
 485                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 486                 else
 487                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 488         } else
 489                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 490
 491         if (!key) {
 492                 ret = -ENOENT;
 493                 goto out_unlock;
 494         }
 495
 496         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 497
 498         ret = 0;
 499  out_unlock:
 500         mutex_unlock(&local->key_mtx);
 501         mutex_unlock(&local->sta_mtx);
 502
 503         return ret;
 504 }
 505
 506 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 507                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 508                              void *cookie,
 509                              void (*callback)(void *cookie,
 510                                               struct key_params *params))
 511 {
 512         struct ieee80211_sub_if_data *sdata;
 513         struct sta_info *sta = NULL;
 514         u8 seq[6] = {0};
 515         struct key_params params;
 516         struct ieee80211_key *key = NULL;
 517         u64 pn64;
 518         u32 iv32;
 519         u16 iv16;
 520         int err = -ENOENT;
 521         struct ieee80211_key_seq kseq = {};
 522
 523         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 524
 525         rcu_read_lock();
 526
 527         if (mac_addr) {
 528                 sta = sta_info_get_bss(sdata, mac_addr);
 529                 if (!sta)
 530                         goto out;
 531
 532                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 533                         key = rcu_dereference(sta->ptk[key_idx]);
 534                 else if (!pairwise &&
 535                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 536                         key = rcu_dereference(sta->gtk[key_idx]);
 537         } else
 538                 key = rcu_dereference(sdata->keys[key_idx]);
 539
 540         if (!key)
 541                 goto out;
 542
 543         memset(&params, 0, sizeof(params));
 544
 545         params.cipher = key->conf.cipher;
 546
 547         switch (key->conf.cipher) {
 548         case WLAN_CIPHER_SUITE_TKIP:
 549                 pn64 = atomic64_read(&key->conf.tx_pn);
 550                 iv32 = TKIP_PN_TO_IV32(pn64);
 551                 iv16 = TKIP_PN_TO_IV16(pn64);
 552
 553                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 554                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 555                         drv_get_key_seq(sdata->local, key, &kseq);
 556                         iv32 = kseq.tkip.iv32;
 557                         iv16 = kseq.tkip.iv16;
 558                 }
 559
 560                 seq[0] = iv16 & 0xff;
 561                 seq[1] = (iv16 >> 8) & 0xff;
 562                 seq[2] = iv32 & 0xff;
 563                 seq[3] = (iv32 >> 8) & 0xff;
 564                 seq[4] = (iv32 >> 16) & 0xff;
 565                 seq[5] = (iv32 >> 24) & 0xff;
 566                 params.seq = seq;
 567                 params.seq_len = 6;
 568                 break;
 569         case WLAN_CIPHER_SUITE_CCMP:
 570         case WLAN_CIPHER_SUITE_CCMP_256:
 571         case WLAN_CIPHER_SUITE_AES_CMAC:
 572         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 573                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 574                              offsetof(typeof(kseq), aes_cmac));
 575                 /* fall through */
 576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 579                              offsetof(typeof(kseq), aes_gmac));
 580                 /* fall through */
 581         case WLAN_CIPHER_SUITE_GCMP:
 582         case WLAN_CIPHER_SUITE_GCMP_256:
 583                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 584                              offsetof(typeof(kseq), gcmp));
 585
 586                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 587                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 588                         drv_get_key_seq(sdata->local, key, &kseq);
 589                         memcpy(seq, kseq.ccmp.pn, 6);
 590                 } else {
 591                         pn64 = atomic64_read(&key->conf.tx_pn);
 592                         seq[0] = pn64;
 593                         seq[1] = pn64 >> 8;
 594                         seq[2] = pn64 >> 16;
 595                         seq[3] = pn64 >> 24;
 596                         seq[4] = pn64 >> 32;
 597                         seq[5] = pn64 >> 40;
 598                 }
 599                 params.seq = seq;
 600                 params.seq_len = 6;
 601                 break;
 602         default:
 603                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 604                         break;
 605                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 606                         break;
 607                 drv_get_key_seq(sdata->local, key, &kseq);
 608                 params.seq = kseq.hw.seq;
 609                 params.seq_len = kseq.hw.seq_len;
 610                 break;
 611         }
 612
 613         params.key = key->conf.key;
 614         params.key_len = key->conf.keylen;
 615
 616         callback(cookie, &params);
 617         err = 0;
 618
 619  out:
 620         rcu_read_unlock();
 621         return err;
 622 }
 623
 624 static int ieee80211_config_default_key(struct wiphy *wiphy,
 625                                         struct net_device *dev,
 626                                         u8 key_idx, bool uni,
 627                                         bool multi)
 628 {
 629         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 630
 631         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 632
 633         return 0;
 634 }
 635
 636 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 637                                              struct net_device *dev,
 638                                              u8 key_idx)
 639 {
 640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 641
 642         ieee80211_set_default_mgmt_key(sdata, key_idx);
 643
 644         return 0;
 645 }
 646
 647 void sta_set_rate_info_tx(struct sta_info *sta,
 648                           const struct ieee80211_tx_rate *rate,
 649                           struct rate_info *rinfo)
 650 {
 651         rinfo->flags = 0;
 652         if (rate->flags & IEEE80211_TX_RC_MCS) {
 653                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 654                 rinfo->mcs = rate->idx;
 655         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 656                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 657                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 658                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 659         } else {
 660                 struct ieee80211_supported_band *sband;
 661                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 662                 u16 brate;
 663
 664                 sband = ieee80211_get_sband(sta->sdata);
 665                 if (sband) {
 666                         brate = sband->bitrates[rate->idx].bitrate;
 667                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 668                 }
 669         }
 670         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 671                 rinfo->bw = RATE_INFO_BW_40;
 672         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 673                 rinfo->bw = RATE_INFO_BW_80;
 674         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 675                 rinfo->bw = RATE_INFO_BW_160;
 676         else
 677                 rinfo->bw = RATE_INFO_BW_20;
 678         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 679                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 680 }
 681
 682 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 683                                   int idx, u8 *mac, struct station_info *sinfo)
 684 {
 685         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 686         struct ieee80211_local *local = sdata->local;
 687         struct sta_info *sta;
 688         int ret = -ENOENT;
 689
 690         mutex_lock(&local->sta_mtx);
 691
 692         sta = sta_info_get_by_idx(sdata, idx);
 693         if (sta) {
 694                 ret = 0;
 695                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 696                 sta_set_sinfo(sta, sinfo, true);
 697         }
 698
 699         mutex_unlock(&local->sta_mtx);
 700
 701         return ret;
 702 }
 703
 704 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 705                                  int idx, struct survey_info *survey)
 706 {
 707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 708
 709         return drv_get_survey(local, idx, survey);
 710 }
 711
 712 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 713                                  const u8 *mac, struct station_info *sinfo)
 714 {
 715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 716         struct ieee80211_local *local = sdata->local;
 717         struct sta_info *sta;
 718         int ret = -ENOENT;
 719
 720         mutex_lock(&local->sta_mtx);
 721
 722         sta = sta_info_get_bss(sdata, mac);
 723         if (sta) {
 724                 ret = 0;
 725                 sta_set_sinfo(sta, sinfo, true);
 726         }
 727
 728         mutex_unlock(&local->sta_mtx);
 729
 730         return ret;
 731 }
 732
 733 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 734                                          struct cfg80211_chan_def *chandef)
 735 {
 736         struct ieee80211_local *local = wiphy_priv(wiphy);
 737         struct ieee80211_sub_if_data *sdata;
 738         int ret = 0;
 739
 740         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 741                 return 0;
 742
 743         mutex_lock(&local->mtx);
 744         if (local->use_chanctx) {
 745                 sdata = rtnl_dereference(local->monitor_sdata);
 746                 if (sdata) {
 747                         ieee80211_vif_release_channel(sdata);
 748                         ret = ieee80211_vif_use_channel(sdata, chandef,
 749                                         IEEE80211_CHANCTX_EXCLUSIVE);
 750                 }
 751         } else if (local->open_count == local->monitors) {
 752                 local->_oper_chandef = *chandef;
 753                 ieee80211_hw_config(local, 0);
 754         }
 755
 756         if (ret == 0)
 757                 local->monitor_chandef = *chandef;
 758         mutex_unlock(&local->mtx);
 759
 760         return ret;
 761 }
 762
 763 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 764                                     const u8 *resp, size_t resp_len,
 765                                     const struct ieee80211_csa_settings *csa)
 766 {
 767         struct probe_resp *new, *old;
 768
 769         if (!resp || !resp_len)
 770                 return 1;
 771
 772         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 773
 774         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 775         if (!new)
 776                 return -ENOMEM;
 777
 778         new->len = resp_len;
 779         memcpy(new->data, resp, resp_len);
 780
 781         if (csa)
 782                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 783                        csa->n_counter_offsets_presp *
 784                        sizeof(new->csa_counter_offsets[0]));
 785
 786         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 787         if (old)
 788                 kfree_rcu(old, rcu_head);
 789
 790         return 0;
 791 }
 792
 793 static int ieee80211_set_ftm_responder_params(
 794                                 struct ieee80211_sub_if_data *sdata,
 795                                 const u8 *lci, size_t lci_len,
 796                                 const u8 *civicloc, size_t civicloc_len)
 797 {
 798         struct ieee80211_ftm_responder_params *new, *old;
 799         struct ieee80211_bss_conf *bss_conf;
 800         u8 *pos;
 801         int len;
 802
 803         if (!lci_len && !civicloc_len)
 804                 return 0;
 805
 806         bss_conf = &sdata->vif.bss_conf;
 807         old = bss_conf->ftmr_params;
 808         len = lci_len + civicloc_len;
 809
 810         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
 811         if (!new)
 812                 return -ENOMEM;
 813
 814         pos = (u8 *)(new + 1);
 815         if (lci_len) {
 816                 new->lci_len = lci_len;
 817                 new->lci = pos;
 818                 memcpy(pos, lci, lci_len);
 819                 pos += lci_len;
 820         }
 821
 822         if (civicloc_len) {
 823                 new->civicloc_len = civicloc_len;
 824                 new->civicloc = pos;
 825                 memcpy(pos, civicloc, civicloc_len);
 826                 pos += civicloc_len;
 827         }
 828
 829         bss_conf->ftmr_params = new;
 830         kfree(old);
 831
 832         return 0;
 833 }
 834
 835 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 836                                    struct cfg80211_beacon_data *params,
 837                                    const struct ieee80211_csa_settings *csa)
 838 {
 839         struct beacon_data *new, *old;
 840         int new_head_len, new_tail_len;
 841         int size, err;
 842         u32 changed = BSS_CHANGED_BEACON;
 843
 844         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 845
 846
 847         /* Need to have a beacon head if we don't have one yet */
 848         if (!params->head && !old)
 849                 return -EINVAL;
 850
 851         /* new or old head? */
 852         if (params->head)
 853                 new_head_len = params->head_len;
 854         else
 855                 new_head_len = old->head_len;
 856
 857         /* new or old tail? */
 858         if (params->tail || !old)
 859                 /* params->tail_len will be zero for !params->tail */
 860                 new_tail_len = params->tail_len;
 861         else
 862                 new_tail_len = old->tail_len;
 863
 864         size = sizeof(*new) + new_head_len + new_tail_len;
 865
 866         new = kzalloc(size, GFP_KERNEL);
 867         if (!new)
 868                 return -ENOMEM;
 869
 870         /* start filling the new info now */
 871
 872         /*
 873          * pointers go into the block we allocated,
 874          * memory is | beacon_data | head | tail |
 875          */
 876         new->head = ((u8 *) new) + sizeof(*new);
 877         new->tail = new->head + new_head_len;
 878         new->head_len = new_head_len;
 879         new->tail_len = new_tail_len;
 880
 881         if (csa) {
 882                 new->csa_current_counter = csa->count;
 883                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 884                        csa->n_counter_offsets_beacon *
 885                        sizeof(new->csa_counter_offsets[0]));
 886         }
 887
 888         /* copy in head */
 889         if (params->head)
 890                 memcpy(new->head, params->head, new_head_len);
 891         else
 892                 memcpy(new->head, old->head, new_head_len);
 893
 894         /* copy in optional tail */
 895         if (params->tail)
 896                 memcpy(new->tail, params->tail, new_tail_len);
 897         else
 898                 if (old)
 899                         memcpy(new->tail, old->tail, new_tail_len);
 900
 901         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 902                                        params->probe_resp_len, csa);
 903         if (err < 0)
 904                 return err;
 905         if (err == 0)
 906                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 907
 908         if (params->ftm_responder != -1) {
 909                 sdata->vif.bss_conf.ftm_responder = params->ftm_responder;
 910                 err = ieee80211_set_ftm_responder_params(sdata,
 911                                                          params->lci,
 912                                                          params->lci_len,
 913                                                          params->civicloc,
 914                                                          params->civicloc_len);
 915
 916                 if (err < 0)
 917                         return err;
 918
 919                 changed |= BSS_CHANGED_FTM_RESPONDER;
 920         }
 921
 922         rcu_assign_pointer(sdata->u.ap.beacon, new);
 923
 924         if (old)
 925                 kfree_rcu(old, rcu_head);
 926
 927         return changed;
 928 }
 929
 930 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 931                               struct cfg80211_ap_settings *params)
 932 {
 933         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 934         struct ieee80211_local *local = sdata->local;
 935         struct beacon_data *old;
 936         struct ieee80211_sub_if_data *vlan;
 937         u32 changed = BSS_CHANGED_BEACON_INT |
 938                       BSS_CHANGED_BEACON_ENABLED |
 939                       BSS_CHANGED_BEACON |
 940                       BSS_CHANGED_SSID |
 941                       BSS_CHANGED_P2P_PS |
 942                       BSS_CHANGED_TXPOWER;
 943         int err;
 944         int prev_beacon_int;
 945
 946         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 947         if (old)
 948                 return -EALREADY;
 949
 950         switch (params->smps_mode) {
 951         case NL80211_SMPS_OFF:
 952                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 953                 break;
 954         case NL80211_SMPS_STATIC:
 955                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 956                 break;
 957         case NL80211_SMPS_DYNAMIC:
 958                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 959                 break;
 960         default:
 961                 return -EINVAL;
 962         }
 963         sdata->u.ap.req_smps = sdata->smps_mode;
 964
 965         sdata->needed_rx_chains = sdata->local->rx_chains;
 966
 967         prev_beacon_int = sdata->vif.bss_conf.beacon_int;
 968         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 969
 970         if (params->he_cap)
 971                 sdata->vif.bss_conf.he_support = true;
 972
 973         mutex_lock(&local->mtx);
 974         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 975                                         IEEE80211_CHANCTX_SHARED);
 976         if (!err)
 977                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 978         mutex_unlock(&local->mtx);
 979         if (err) {
 980                 sdata->vif.bss_conf.beacon_int = prev_beacon_int;
 981                 return err;
 982         }
 983
 984         /*
 985          * Apply control port protocol, this allows us to
 986          * not encrypt dynamic WEP control frames.
 987          */
 988         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 989         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 990         sdata->control_port_over_nl80211 =
 991                                 params->crypto.control_port_over_nl80211;
 992         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 993                                                         &params->crypto,
 994                                                         sdata->vif.type);
 995
 996         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 997                 vlan->control_port_protocol =
 998                         params->crypto.control_port_ethertype;
 999                 vlan->control_port_no_encrypt =
1000                         params->crypto.control_port_no_encrypt;
1001                 vlan->control_port_over_nl80211 =
1002                         params->crypto.control_port_over_nl80211;
1003                 vlan->encrypt_headroom =
1004                         ieee80211_cs_headroom(sdata->local,
1005                                               &params->crypto,
1006                                               vlan->vif.type);
1007         }
1008
1009         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1010         sdata->vif.bss_conf.enable_beacon = true;
1011         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
1012
1013         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1014         if (params->ssid_len)
1015                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1016                        params->ssid_len);
1017         sdata->vif.bss_conf.hidden_ssid =
1018                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1019
1020         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1021                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1022         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1023                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1024         if (params->p2p_opp_ps)
1025                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1026                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1027
1028         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
1029         if (err < 0) {
1030                 ieee80211_vif_release_channel(sdata);
1031                 return err;
1032         }
1033         changed |= err;
1034
1035         err = drv_start_ap(sdata->local, sdata);
1036         if (err) {
1037                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1038
1039                 if (old)
1040                         kfree_rcu(old, rcu_head);
1041                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1042                 ieee80211_vif_release_channel(sdata);
1043                 return err;
1044         }
1045
1046         ieee80211_recalc_dtim(local, sdata);
1047         ieee80211_bss_info_change_notify(sdata, changed);
1048
1049         netif_carrier_on(dev);
1050         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1051                 netif_carrier_on(vlan->dev);
1052
1053         return 0;
1054 }
1055
1056 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1057                                    struct cfg80211_beacon_data *params)
1058 {
1059         struct ieee80211_sub_if_data *sdata;
1060         struct beacon_data *old;
1061         int err;
1062
1063         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1064         sdata_assert_lock(sdata);
1065
1066         /* don't allow changing the beacon while CSA is in place - offset
1067          * of channel switch counter may change
1068          */
1069         if (sdata->vif.csa_active)
1070                 return -EBUSY;
1071
1072         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1073         if (!old)
1074                 return -ENOENT;
1075
1076         err = ieee80211_assign_beacon(sdata, params, NULL);
1077         if (err < 0)
1078                 return err;
1079         ieee80211_bss_info_change_notify(sdata, err);
1080         return 0;
1081 }
1082
1083 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1084 {
1085         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1086         struct ieee80211_sub_if_data *vlan;
1087         struct ieee80211_local *local = sdata->local;
1088         struct beacon_data *old_beacon;
1089         struct probe_resp *old_probe_resp;
1090         struct cfg80211_chan_def chandef;
1091
1092         sdata_assert_lock(sdata);
1093
1094         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1095         if (!old_beacon)
1096                 return -ENOENT;
1097         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1098
1099         /* abort any running channel switch */
1100         mutex_lock(&local->mtx);
1101         sdata->vif.csa_active = false;
1102         if (sdata->csa_block_tx) {
1103                 ieee80211_wake_vif_queues(local, sdata,
1104                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1105                 sdata->csa_block_tx = false;
1106         }
1107
1108         mutex_unlock(&local->mtx);
1109
1110         kfree(sdata->u.ap.next_beacon);
1111         sdata->u.ap.next_beacon = NULL;
1112
1113         /* turn off carrier for this interface and dependent VLANs */
1114         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1115                 netif_carrier_off(vlan->dev);
1116         netif_carrier_off(dev);
1117
1118         /* remove beacon and probe response */
1119         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1120         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1121         kfree_rcu(old_beacon, rcu_head);
1122         if (old_probe_resp)
1123                 kfree_rcu(old_probe_resp, rcu_head);
1124         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1125
1126         kfree(sdata->vif.bss_conf.ftmr_params);
1127         sdata->vif.bss_conf.ftmr_params = NULL;
1128
1129         __sta_info_flush(sdata, true);
1130         ieee80211_free_keys(sdata, true);
1131
1132         sdata->vif.bss_conf.enable_beacon = false;
1133         sdata->vif.bss_conf.ssid_len = 0;
1134         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1135         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1136
1137         if (sdata->wdev.cac_started) {
1138                 chandef = sdata->vif.bss_conf.chandef;
1139                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1140                 cfg80211_cac_event(sdata->dev, &chandef,
1141                                    NL80211_RADAR_CAC_ABORTED,
1142                                    GFP_KERNEL);
1143         }
1144
1145         drv_stop_ap(sdata->local, sdata);
1146
1147         /* free all potentially still buffered bcast frames */
1148         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1149         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1150
1151         mutex_lock(&local->mtx);
1152         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1153         ieee80211_vif_release_channel(sdata);
1154         mutex_unlock(&local->mtx);
1155
1156         return 0;
1157 }
1158
1159 static int sta_apply_auth_flags(struct ieee80211_local *local,
1160                                 struct sta_info *sta,
1161                                 u32 mask, u32 set)
1162 {
1163         int ret;
1164
1165         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1166             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1167             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1168                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1169                 if (ret)
1170                         return ret;
1171         }
1172
1173         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1174             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1175             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1176                 /*
1177                  * When peer becomes associated, init rate control as
1178                  * well. Some drivers require rate control initialized
1179                  * before drv_sta_state() is called.
1180                  */
1181                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1182                         rate_control_rate_init(sta);
1183
1184                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1185                 if (ret)
1186                         return ret;
1187         }
1188
1189         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1190                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1191                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1192                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1193                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1194                 else
1195                         ret = 0;
1196                 if (ret)
1197                         return ret;
1198         }
1199
1200         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1201             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1202             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1203                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1204                 if (ret)
1205                         return ret;
1206         }
1207
1208         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1209             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1210             test_sta_flag(sta, WLAN_STA_AUTH)) {
1211                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1212                 if (ret)
1213                         return ret;
1214         }
1215
1216         return 0;
1217 }
1218
1219 static void sta_apply_mesh_params(struct ieee80211_local *local,
1220                                   struct sta_info *sta,
1221                                   struct station_parameters *params)
1222 {
1223 #ifdef CONFIG_MAC80211_MESH
1224         struct ieee80211_sub_if_data *sdata = sta->sdata;
1225         u32 changed = 0;
1226
1227         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1228                 switch (params->plink_state) {
1229                 case NL80211_PLINK_ESTAB:
1230                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1231                                 changed = mesh_plink_inc_estab_count(sdata);
1232                         sta->mesh->plink_state = params->plink_state;
1233                         sta->mesh->aid = params->peer_aid;
1234
1235                         ieee80211_mps_sta_status_update(sta);
1236                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1237                                       sdata->u.mesh.mshcfg.power_mode);
1238                         break;
1239                 case NL80211_PLINK_LISTEN:
1240                 case NL80211_PLINK_BLOCKED:
1241                 case NL80211_PLINK_OPN_SNT:
1242                 case NL80211_PLINK_OPN_RCVD:
1243                 case NL80211_PLINK_CNF_RCVD:
1244                 case NL80211_PLINK_HOLDING:
1245                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1246                                 changed = mesh_plink_dec_estab_count(sdata);
1247                         sta->mesh->plink_state = params->plink_state;
1248
1249                         ieee80211_mps_sta_status_update(sta);
1250                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1251                                         NL80211_MESH_POWER_UNKNOWN);
1252                         break;
1253                 default:
1254                         /*  nothing  */
1255                         break;
1256                 }
1257         }
1258
1259         switch (params->plink_action) {
1260         case NL80211_PLINK_ACTION_NO_ACTION:
1261                 /* nothing */
1262                 break;
1263         case NL80211_PLINK_ACTION_OPEN:
1264                 changed |= mesh_plink_open(sta);
1265                 break;
1266         case NL80211_PLINK_ACTION_BLOCK:
1267                 changed |= mesh_plink_block(sta);
1268                 break;
1269         }
1270
1271         if (params->local_pm)
1272                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1273                                                           params->local_pm);
1274
1275         ieee80211_mbss_info_change_notify(sdata, changed);
1276 #endif
1277 }
1278
1279 static int sta_apply_parameters(struct ieee80211_local *local,
1280                                 struct sta_info *sta,
1281                                 struct station_parameters *params)
1282 {
1283         int ret = 0;
1284         struct ieee80211_supported_band *sband;
1285         struct ieee80211_sub_if_data *sdata = sta->sdata;
1286         u32 mask, set;
1287
1288         sband = ieee80211_get_sband(sdata);
1289         if (!sband)
1290                 return -EINVAL;
1291
1292         mask = params->sta_flags_mask;
1293         set = params->sta_flags_set;
1294
1295         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1296                 /*
1297                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1298                  * API but must follow AUTHENTICATED for driver state.
1299                  */
1300                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1301                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1302                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1303                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1304         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1305                 /*
1306                  * TDLS -- everything follows authorized, but
1307                  * only becoming authorized is possible, not
1308                  * going back
1309                  */
1310                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1311                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1312                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1313                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1314                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1315                 }
1316         }
1317
1318         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1319             local->hw.queues >= IEEE80211_NUM_ACS)
1320                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1321
1322         /* auth flags will be set later for TDLS,
1323          * and for unassociated stations that move to assocaited */
1324         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1325             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1326               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1327                 ret = sta_apply_auth_flags(local, sta, mask, set);
1328                 if (ret)
1329                         return ret;
1330         }
1331
1332         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1333                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1334                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1335                 else
1336                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1337         }
1338
1339         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1340                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1341                 if (set & BIT(NL80211_STA_FLAG_MFP))
1342                         set_sta_flag(sta, WLAN_STA_MFP);
1343                 else
1344                         clear_sta_flag(sta, WLAN_STA_MFP);
1345         }
1346
1347         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1348                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1349                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1350                 else
1351                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1352         }
1353
1354         /* mark TDLS channel switch support, if the AP allows it */
1355         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1356             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1357             params->ext_capab_len >= 4 &&
1358             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1359                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1360
1361         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1362             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1363             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1364             params->ext_capab_len >= 8 &&
1365             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1366                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1367
1368         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1369                 sta->sta.uapsd_queues = params->uapsd_queues;
1370                 sta->sta.max_sp = params->max_sp;
1371         }
1372
1373         /* The sender might not have sent the last bit, consider it to be 0 */
1374         if (params->ext_capab_len >= 8) {
1375                 u8 val = (params->ext_capab[7] &
1376                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1377
1378                 /* we did get all the bits, take the MSB as well */
1379                 if (params->ext_capab_len >= 9) {
1380                         u8 val_msb = params->ext_capab[8] &
1381                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1382                         val_msb <<= 1;
1383                         val |= val_msb;
1384                 }
1385
1386                 switch (val) {
1387                 case 1:
1388                         sta->sta.max_amsdu_subframes = 32;
1389                         break;
1390                 case 2:
1391                         sta->sta.max_amsdu_subframes = 16;
1392                         break;
1393                 case 3:
1394                         sta->sta.max_amsdu_subframes = 8;
1395                         break;
1396                 default:
1397                         sta->sta.max_amsdu_subframes = 0;
1398                 }
1399         }
1400
1401         /*
1402          * cfg80211 validates this (1-2007) and allows setting the AID
1403          * only when creating a new station entry
1404          */
1405         if (params->aid)
1406                 sta->sta.aid = params->aid;
1407
1408         /*
1409          * Some of the following updates would be racy if called on an
1410          * existing station, via ieee80211_change_station(). However,
1411          * all such changes are rejected by cfg80211 except for updates
1412          * changing the supported rates on an existing but not yet used
1413          * TDLS peer.
1414          */
1415
1416         if (params->listen_interval >= 0)
1417                 sta->listen_interval = params->listen_interval;
1418
1419         if (params->supported_rates) {
1420                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1421                                          sband, params->supported_rates,
1422                                          params->supported_rates_len,
1423                                          &sta->sta.supp_rates[sband->band]);
1424         }
1425
1426         if (params->ht_capa)
1427                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1428                                                   params->ht_capa, sta);
1429
1430         /* VHT can override some HT caps such as the A-MSDU max length */
1431         if (params->vht_capa)
1432                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1433                                                     params->vht_capa, sta);
1434
1435         if (params->he_capa)
1436                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1437                                                   (void *)params->he_capa,
1438                                                   params->he_capa_len, sta);
1439
1440         if (params->opmode_notif_used) {
1441                 /* returned value is only needed for rc update, but the
1442                  * rc isn't initialized here yet, so ignore it
1443                  */
1444                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1445                                               sband->band);
1446         }
1447
1448         if (params->support_p2p_ps >= 0)
1449                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1450
1451         if (ieee80211_vif_is_mesh(&sdata->vif))
1452                 sta_apply_mesh_params(local, sta, params);
1453
1454         /* set the STA state after all sta info from usermode has been set */
1455         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1456             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1457                 ret = sta_apply_auth_flags(local, sta, mask, set);
1458                 if (ret)
1459                         return ret;
1460         }
1461
1462         return 0;
1463 }
1464
1465 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1466                                  const u8 *mac,
1467                                  struct station_parameters *params)
1468 {
1469         struct ieee80211_local *local = wiphy_priv(wiphy);
1470         struct sta_info *sta;
1471         struct ieee80211_sub_if_data *sdata;
1472         int err;
1473         int layer2_update;
1474
1475         if (params->vlan) {
1476                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1477
1478                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1479                     sdata->vif.type != NL80211_IFTYPE_AP)
1480                         return -EINVAL;
1481         } else
1482                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1483
1484         if (ether_addr_equal(mac, sdata->vif.addr))
1485                 return -EINVAL;
1486
1487         if (is_multicast_ether_addr(mac))
1488                 return -EINVAL;
1489
1490         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1491         if (!sta)
1492                 return -ENOMEM;
1493
1494         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1495                 sta->sta.tdls = true;
1496
1497         if (sta->sta.tdls && sdata->vif.type == NL80211_IFTYPE_STATION &&
1498             !sdata->u.mgd.associated)
1499                 return -EINVAL;
1500
1501         err = sta_apply_parameters(local, sta, params);
1502         if (err) {
1503                 sta_info_free(local, sta);
1504                 return err;
1505         }
1506
1507         /*
1508          * for TDLS and for unassociated station, rate control should be
1509          * initialized only when rates are known and station is marked
1510          * authorized/associated
1511          */
1512         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1513             test_sta_flag(sta, WLAN_STA_ASSOC))
1514                 rate_control_rate_init(sta);
1515
1516         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1517                 sdata->vif.type == NL80211_IFTYPE_AP;
1518
1519         err = sta_info_insert_rcu(sta);
1520         if (err) {
1521                 rcu_read_unlock();
1522                 return err;
1523         }
1524
1525         if (layer2_update)
1526                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1527
1528         rcu_read_unlock();
1529
1530         return 0;
1531 }
1532
1533 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1534                                  struct station_del_parameters *params)
1535 {
1536         struct ieee80211_sub_if_data *sdata;
1537
1538         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1539
1540         if (params->mac)
1541                 return sta_info_destroy_addr_bss(sdata, params->mac);
1542
1543         sta_info_flush(sdata);
1544         return 0;
1545 }
1546
1547 static int ieee80211_change_station(struct wiphy *wiphy,
1548                                     struct net_device *dev, const u8 *mac,
1549                                     struct station_parameters *params)
1550 {
1551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1552         struct ieee80211_local *local = wiphy_priv(wiphy);
1553         struct sta_info *sta;
1554         struct ieee80211_sub_if_data *vlansdata;
1555         enum cfg80211_station_type statype;
1556         int err;
1557
1558         mutex_lock(&local->sta_mtx);
1559
1560         sta = sta_info_get_bss(sdata, mac);
1561         if (!sta) {
1562                 err = -ENOENT;
1563                 goto out_err;
1564         }
1565
1566         switch (sdata->vif.type) {
1567         case NL80211_IFTYPE_MESH_POINT:
1568                 if (sdata->u.mesh.user_mpm)
1569                         statype = CFG80211_STA_MESH_PEER_USER;
1570                 else
1571                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1572                 break;
1573         case NL80211_IFTYPE_ADHOC:
1574                 statype = CFG80211_STA_IBSS;
1575                 break;
1576         case NL80211_IFTYPE_STATION:
1577                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1578                         statype = CFG80211_STA_AP_STA;
1579                         break;
1580                 }
1581                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1582                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1583                 else
1584                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1585                 break;
1586         case NL80211_IFTYPE_AP:
1587         case NL80211_IFTYPE_AP_VLAN:
1588                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1589                         statype = CFG80211_STA_AP_CLIENT;
1590                 else
1591                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1592                 break;
1593         default:
1594                 err = -EOPNOTSUPP;
1595                 goto out_err;
1596         }
1597
1598         err = cfg80211_check_station_change(wiphy, params, statype);
1599         if (err)
1600                 goto out_err;
1601
1602         if (params->vlan && params->vlan != sta->sdata->dev) {
1603                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1604
1605                 if (params->vlan->ieee80211_ptr->use_4addr) {
1606                         if (vlansdata->u.vlan.sta) {
1607                                 err = -EBUSY;
1608                                 goto out_err;
1609                         }
1610
1611                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1612                         __ieee80211_check_fast_rx_iface(vlansdata);
1613                 }
1614
1615                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1616                     sta->sdata->u.vlan.sta)
1617                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1618
1619                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1620                         ieee80211_vif_dec_num_mcast(sta->sdata);
1621
1622                 sta->sdata = vlansdata;
1623                 ieee80211_check_fast_xmit(sta);
1624
1625                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1626                         ieee80211_vif_inc_num_mcast(sta->sdata);
1627
1628                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1629         }
1630
1631         err = sta_apply_parameters(local, sta, params);
1632         if (err)
1633                 goto out_err;
1634
1635         mutex_unlock(&local->sta_mtx);
1636
1637         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1638              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1639             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1640             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1641             sta_info_tx_streams(sta) != 1) {
1642                 ht_dbg(sta->sdata,
1643                        "%pM just authorized and MIMO capable - update SMPS\n",
1644                        sta->sta.addr);
1645                 ieee80211_send_smps_action(sta->sdata,
1646                         sta->sdata->bss->req_smps,
1647                         sta->sta.addr,
1648                         sta->sdata->vif.bss_conf.bssid);
1649         }
1650
1651         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1652             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1653                 ieee80211_recalc_ps(local);
1654                 ieee80211_recalc_ps_vif(sdata);
1655         }
1656
1657         return 0;
1658 out_err:
1659         mutex_unlock(&local->sta_mtx);
1660         return err;
1661 }
1662
1663 #ifdef CONFIG_MAC80211_MESH
1664 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1665                                const u8 *dst, const u8 *next_hop)
1666 {
1667         struct ieee80211_sub_if_data *sdata;
1668         struct mesh_path *mpath;
1669         struct sta_info *sta;
1670
1671         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1672
1673         rcu_read_lock();
1674         sta = sta_info_get(sdata, next_hop);
1675         if (!sta) {
1676                 rcu_read_unlock();
1677                 return -ENOENT;
1678         }
1679
1680         mpath = mesh_path_add(sdata, dst);
1681         if (IS_ERR(mpath)) {
1682                 rcu_read_unlock();
1683                 return PTR_ERR(mpath);
1684         }
1685
1686         mesh_path_fix_nexthop(mpath, sta);
1687
1688         rcu_read_unlock();
1689         return 0;
1690 }
1691
1692 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1693                                const u8 *dst)
1694 {
1695         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1696
1697         if (dst)
1698                 return mesh_path_del(sdata, dst);
1699
1700         mesh_path_flush_by_iface(sdata);
1701         return 0;
1702 }
1703
1704 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1705                                   const u8 *dst, const u8 *next_hop)
1706 {
1707         struct ieee80211_sub_if_data *sdata;
1708         struct mesh_path *mpath;
1709         struct sta_info *sta;
1710
1711         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1712
1713         rcu_read_lock();
1714
1715         sta = sta_info_get(sdata, next_hop);
1716         if (!sta) {
1717                 rcu_read_unlock();
1718                 return -ENOENT;
1719         }
1720
1721         mpath = mesh_path_lookup(sdata, dst);
1722         if (!mpath) {
1723                 rcu_read_unlock();
1724                 return -ENOENT;
1725         }
1726
1727         mesh_path_fix_nexthop(mpath, sta);
1728
1729         rcu_read_unlock();
1730         return 0;
1731 }
1732
1733 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1734                             struct mpath_info *pinfo)
1735 {
1736         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1737
1738         if (next_hop_sta)
1739                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1740         else
1741                 eth_zero_addr(next_hop);
1742
1743         memset(pinfo, 0, sizeof(*pinfo));
1744
1745         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1746
1747         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1748                         MPATH_INFO_SN |
1749                         MPATH_INFO_METRIC |
1750                         MPATH_INFO_EXPTIME |
1751                         MPATH_INFO_DISCOVERY_TIMEOUT |
1752                         MPATH_INFO_DISCOVERY_RETRIES |
1753                         MPATH_INFO_FLAGS;
1754
1755         pinfo->frame_qlen = mpath->frame_queue.qlen;
1756         pinfo->sn = mpath->sn;
1757         pinfo->metric = mpath->metric;
1758         if (time_before(jiffies, mpath->exp_time))
1759                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1760         pinfo->discovery_timeout =
1761                         jiffies_to_msecs(mpath->discovery_timeout);
1762         pinfo->discovery_retries = mpath->discovery_retries;
1763         if (mpath->flags & MESH_PATH_ACTIVE)
1764                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1765         if (mpath->flags & MESH_PATH_RESOLVING)
1766                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1767         if (mpath->flags & MESH_PATH_SN_VALID)
1768                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1769         if (mpath->flags & MESH_PATH_FIXED)
1770                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1771         if (mpath->flags & MESH_PATH_RESOLVED)
1772                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1773 }
1774
1775 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1776                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1777
1778 {
1779         struct ieee80211_sub_if_data *sdata;
1780         struct mesh_path *mpath;
1781
1782         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1783
1784         rcu_read_lock();
1785         mpath = mesh_path_lookup(sdata, dst);
1786         if (!mpath) {
1787                 rcu_read_unlock();
1788                 return -ENOENT;
1789         }
1790         memcpy(dst, mpath->dst, ETH_ALEN);
1791         mpath_set_pinfo(mpath, next_hop, pinfo);
1792         rcu_read_unlock();
1793         return 0;
1794 }
1795
1796 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1797                                 int idx, u8 *dst, u8 *next_hop,
1798                                 struct mpath_info *pinfo)
1799 {
1800         struct ieee80211_sub_if_data *sdata;
1801         struct mesh_path *mpath;
1802
1803         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1804
1805         rcu_read_lock();
1806         mpath = mesh_path_lookup_by_idx(sdata, idx);
1807         if (!mpath) {
1808                 rcu_read_unlock();
1809                 return -ENOENT;
1810         }
1811         memcpy(dst, mpath->dst, ETH_ALEN);
1812         mpath_set_pinfo(mpath, next_hop, pinfo);
1813         rcu_read_unlock();
1814         return 0;
1815 }
1816
1817 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1818                           struct mpath_info *pinfo)
1819 {
1820         memset(pinfo, 0, sizeof(*pinfo));
1821         memcpy(mpp, mpath->mpp, ETH_ALEN);
1822
1823         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1824 }
1825
1826 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1827                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1828
1829 {
1830         struct ieee80211_sub_if_data *sdata;
1831         struct mesh_path *mpath;
1832
1833         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1834
1835         rcu_read_lock();
1836         mpath = mpp_path_lookup(sdata, dst);
1837         if (!mpath) {
1838                 rcu_read_unlock();
1839                 return -ENOENT;
1840         }
1841         memcpy(dst, mpath->dst, ETH_ALEN);
1842         mpp_set_pinfo(mpath, mpp, pinfo);
1843         rcu_read_unlock();
1844         return 0;
1845 }
1846
1847 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1848                               int idx, u8 *dst, u8 *mpp,
1849                               struct mpath_info *pinfo)
1850 {
1851         struct ieee80211_sub_if_data *sdata;
1852         struct mesh_path *mpath;
1853
1854         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1855
1856         rcu_read_lock();
1857         mpath = mpp_path_lookup_by_idx(sdata, idx);
1858         if (!mpath) {
1859                 rcu_read_unlock();
1860                 return -ENOENT;
1861         }
1862         memcpy(dst, mpath->dst, ETH_ALEN);
1863         mpp_set_pinfo(mpath, mpp, pinfo);
1864         rcu_read_unlock();
1865         return 0;
1866 }
1867
1868 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1869                                 struct net_device *dev,
1870                                 struct mesh_config *conf)
1871 {
1872         struct ieee80211_sub_if_data *sdata;
1873         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1874
1875         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1876         return 0;
1877 }
1878
1879 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1880 {
1881         return (mask >> (parm-1)) & 0x1;
1882 }
1883
1884 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1885                 const struct mesh_setup *setup)
1886 {
1887         u8 *new_ie;
1888         const u8 *old_ie;
1889         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1890                                         struct ieee80211_sub_if_data, u.mesh);
1891
1892         /* allocate information elements */
1893         new_ie = NULL;
1894         old_ie = ifmsh->ie;
1895
1896         if (setup->ie_len) {
1897                 new_ie = kmemdup(setup->ie, setup->ie_len,
1898                                 GFP_KERNEL);
1899                 if (!new_ie)
1900                         return -ENOMEM;
1901         }
1902         ifmsh->ie_len = setup->ie_len;
1903         ifmsh->ie = new_ie;
1904         kfree(old_ie);
1905
1906         /* now copy the rest of the setup parameters */
1907         ifmsh->mesh_id_len = setup->mesh_id_len;
1908         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1909         ifmsh->mesh_sp_id = setup->sync_method;
1910         ifmsh->mesh_pp_id = setup->path_sel_proto;
1911         ifmsh->mesh_pm_id = setup->path_metric;
1912         ifmsh->user_mpm = setup->user_mpm;
1913         ifmsh->mesh_auth_id = setup->auth_id;
1914         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1915         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1916         if (setup->is_authenticated)
1917                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1918         if (setup->is_secure)
1919                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1920
1921         /* mcast rate setting in Mesh Node */
1922         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1923                                                 sizeof(setup->mcast_rate));
1924         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1925
1926         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1927         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1928
1929         return 0;
1930 }
1931
1932 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1933                                         struct net_device *dev, u32 mask,
1934                                         const struct mesh_config *nconf)
1935 {
1936         struct mesh_config *conf;
1937         struct ieee80211_sub_if_data *sdata;
1938         struct ieee80211_if_mesh *ifmsh;
1939
1940         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1941         ifmsh = &sdata->u.mesh;
1942
1943         /* Set the config options which we are interested in setting */
1944         conf = &(sdata->u.mesh.mshcfg);
1945         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1946                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1947         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1948                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1949         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1950                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1951         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1952                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1953         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1954                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1955         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1956                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1957         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1958                 conf->element_ttl = nconf->element_ttl;
1959         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1960                 if (ifmsh->user_mpm)
1961                         return -EBUSY;
1962                 conf->auto_open_plinks = nconf->auto_open_plinks;
1963         }
1964         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1965                 conf->dot11MeshNbrOffsetMaxNeighbor =
1966                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1967         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1968                 conf->dot11MeshHWMPmaxPREQretries =
1969                         nconf->dot11MeshHWMPmaxPREQretries;
1970         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1971                 conf->path_refresh_time = nconf->path_refresh_time;
1972         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1973                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1974         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1975                 conf->dot11MeshHWMPactivePathTimeout =
1976                         nconf->dot11MeshHWMPactivePathTimeout;
1977         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1978                 conf->dot11MeshHWMPpreqMinInterval =
1979                         nconf->dot11MeshHWMPpreqMinInterval;
1980         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1981                 conf->dot11MeshHWMPperrMinInterval =
1982                         nconf->dot11MeshHWMPperrMinInterval;
1983         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1984                            mask))
1985                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1986                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1987         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1988                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1989                 ieee80211_mesh_root_setup(ifmsh);
1990         }
1991         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1992                 /* our current gate announcement implementation rides on root
1993                  * announcements, so require this ifmsh to also be a root node
1994                  * */
1995                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1996                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1997                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1998                         ieee80211_mesh_root_setup(ifmsh);
1999                 }
2000                 conf->dot11MeshGateAnnouncementProtocol =
2001                         nconf->dot11MeshGateAnnouncementProtocol;
2002         }
2003         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2004                 conf->dot11MeshHWMPRannInterval =
2005                         nconf->dot11MeshHWMPRannInterval;
2006         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2007                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2008         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2009                 /* our RSSI threshold implementation is supported only for
2010                  * devices that report signal in dBm.
2011                  */
2012                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2013                         return -ENOTSUPP;
2014                 conf->rssi_threshold = nconf->rssi_threshold;
2015         }
2016         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2017                 conf->ht_opmode = nconf->ht_opmode;
2018                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2019                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
2020         }
2021         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2022                 conf->dot11MeshHWMPactivePathToRootTimeout =
2023                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2024         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2025                 conf->dot11MeshHWMProotInterval =
2026                         nconf->dot11MeshHWMProotInterval;
2027         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2028                 conf->dot11MeshHWMPconfirmationInterval =
2029                         nconf->dot11MeshHWMPconfirmationInterval;
2030         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2031                 conf->power_mode = nconf->power_mode;
2032                 ieee80211_mps_local_status_update(sdata);
2033         }
2034         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2035                 conf->dot11MeshAwakeWindowDuration =
2036                         nconf->dot11MeshAwakeWindowDuration;
2037         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2038                 conf->plink_timeout = nconf->plink_timeout;
2039         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2040                 conf->dot11MeshConnectedToMeshGate =
2041                         nconf->dot11MeshConnectedToMeshGate;
2042         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2043         return 0;
2044 }
2045
2046 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2047                                const struct mesh_config *conf,
2048                                const struct mesh_setup *setup)
2049 {
2050         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2051         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2052         int err;
2053
2054         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2055         err = copy_mesh_setup(ifmsh, setup);
2056         if (err)
2057                 return err;
2058
2059         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2060
2061         /* can mesh use other SMPS modes? */
2062         sdata->smps_mode = IEEE80211_SMPS_OFF;
2063         sdata->needed_rx_chains = sdata->local->rx_chains;
2064
2065         mutex_lock(&sdata->local->mtx);
2066         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2067                                         IEEE80211_CHANCTX_SHARED);
2068         mutex_unlock(&sdata->local->mtx);
2069         if (err)
2070                 return err;
2071
2072         return ieee80211_start_mesh(sdata);
2073 }
2074
2075 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2076 {
2077         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2078
2079         ieee80211_stop_mesh(sdata);
2080         mutex_lock(&sdata->local->mtx);
2081         ieee80211_vif_release_channel(sdata);
2082         mutex_unlock(&sdata->local->mtx);
2083
2084         return 0;
2085 }
2086 #endif
2087
2088 static int ieee80211_change_bss(struct wiphy *wiphy,
2089                                 struct net_device *dev,
2090                                 struct bss_parameters *params)
2091 {
2092         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2093         struct ieee80211_supported_band *sband;
2094         u32 changed = 0;
2095
2096         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2097                 return -ENOENT;
2098
2099         sband = ieee80211_get_sband(sdata);
2100         if (!sband)
2101                 return -EINVAL;
2102
2103         if (params->use_cts_prot >= 0) {
2104                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2105                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2106         }
2107         if (params->use_short_preamble >= 0) {
2108                 sdata->vif.bss_conf.use_short_preamble =
2109                         params->use_short_preamble;
2110                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2111         }
2112
2113         if (!sdata->vif.bss_conf.use_short_slot &&
2114             sband->band == NL80211_BAND_5GHZ) {
2115                 sdata->vif.bss_conf.use_short_slot = true;
2116                 changed |= BSS_CHANGED_ERP_SLOT;
2117         }
2118
2119         if (params->use_short_slot_time >= 0) {
2120                 sdata->vif.bss_conf.use_short_slot =
2121                         params->use_short_slot_time;
2122                 changed |= BSS_CHANGED_ERP_SLOT;
2123         }
2124
2125         if (params->basic_rates) {
2126                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2127                                          wiphy->bands[sband->band],
2128                                          params->basic_rates,
2129                                          params->basic_rates_len,
2130                                          &sdata->vif.bss_conf.basic_rates);
2131                 changed |= BSS_CHANGED_BASIC_RATES;
2132                 ieee80211_check_rate_mask(sdata);
2133         }
2134
2135         if (params->ap_isolate >= 0) {
2136                 if (params->ap_isolate)
2137                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2138                 else
2139                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2140                 ieee80211_check_fast_rx_iface(sdata);
2141         }
2142
2143         if (params->ht_opmode >= 0) {
2144                 sdata->vif.bss_conf.ht_operation_mode =
2145                         (u16) params->ht_opmode;
2146                 changed |= BSS_CHANGED_HT;
2147         }
2148
2149         if (params->p2p_ctwindow >= 0) {
2150                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2151                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2152                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2153                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2154                 changed |= BSS_CHANGED_P2P_PS;
2155         }
2156
2157         if (params->p2p_opp_ps > 0) {
2158                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2159                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2160                 changed |= BSS_CHANGED_P2P_PS;
2161         } else if (params->p2p_opp_ps == 0) {
2162                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2163                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2164                 changed |= BSS_CHANGED_P2P_PS;
2165         }
2166
2167         ieee80211_bss_info_change_notify(sdata, changed);
2168
2169         return 0;
2170 }
2171
2172 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2173                                     struct net_device *dev,
2174                                     struct ieee80211_txq_params *params)
2175 {
2176         struct ieee80211_local *local = wiphy_priv(wiphy);
2177         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2178         struct ieee80211_tx_queue_params p;
2179
2180         if (!local->ops->conf_tx)
2181                 return -EOPNOTSUPP;
2182
2183         if (local->hw.queues < IEEE80211_NUM_ACS)
2184                 return -EOPNOTSUPP;
2185
2186         memset(&p, 0, sizeof(p));
2187         p.aifs = params->aifs;
2188         p.cw_max = params->cwmax;
2189         p.cw_min = params->cwmin;
2190         p.txop = params->txop;
2191
2192         /*
2193          * Setting tx queue params disables u-apsd because it's only
2194          * called in master mode.
2195          */
2196         p.uapsd = false;
2197
2198         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2199
2200         sdata->tx_conf[params->ac] = p;
2201         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2202                 wiphy_debug(local->hw.wiphy,
2203                             "failed to set TX queue parameters for AC %d\n",
2204                             params->ac);
2205                 return -EINVAL;
2206         }
2207
2208         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2209
2210         return 0;
2211 }
2212
2213 #ifdef CONFIG_PM
2214 static int ieee80211_suspend(struct wiphy *wiphy,
2215                              struct cfg80211_wowlan *wowlan)
2216 {
2217         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2218 }
2219
2220 static int ieee80211_resume(struct wiphy *wiphy)
2221 {
2222         return __ieee80211_resume(wiphy_priv(wiphy));
2223 }
2224 #else
2225 #define ieee80211_suspend NULL
2226 #define ieee80211_resume NULL
2227 #endif
2228
2229 static int ieee80211_scan(struct wiphy *wiphy,
2230                           struct cfg80211_scan_request *req)
2231 {
2232         struct ieee80211_sub_if_data *sdata;
2233
2234         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2235
2236         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2237         case NL80211_IFTYPE_STATION:
2238         case NL80211_IFTYPE_ADHOC:
2239         case NL80211_IFTYPE_MESH_POINT:
2240         case NL80211_IFTYPE_P2P_CLIENT:
2241         case NL80211_IFTYPE_P2P_DEVICE:
2242                 break;
2243         case NL80211_IFTYPE_P2P_GO:
2244                 if (sdata->local->ops->hw_scan)
2245                         break;
2246                 /*
2247                  * FIXME: implement NoA while scanning in software,
2248                  * for now fall through to allow scanning only when
2249                  * beaconing hasn't been configured yet
2250                  */
2251                 /* fall through */
2252         case NL80211_IFTYPE_AP:
2253                 /*
2254                  * If the scan has been forced (and the driver supports
2255                  * forcing), don't care about being beaconing already.
2256                  * This will create problems to the attached stations (e.g. all
2257                  * the  frames sent while scanning on other channel will be
2258                  * lost)
2259                  */
2260                 if (sdata->u.ap.beacon &&
2261                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2262                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2263                         return -EOPNOTSUPP;
2264                 break;
2265         case NL80211_IFTYPE_NAN:
2266         default:
2267                 return -EOPNOTSUPP;
2268         }
2269
2270         return ieee80211_request_scan(sdata, req);
2271 }
2272
2273 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2274 {
2275         ieee80211_scan_cancel(wiphy_priv(wiphy));
2276 }
2277
2278 static int
2279 ieee80211_sched_scan_start(struct wiphy *wiphy,
2280                            struct net_device *dev,
2281                            struct cfg80211_sched_scan_request *req)
2282 {
2283         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2284
2285         if (!sdata->local->ops->sched_scan_start)
2286                 return -EOPNOTSUPP;
2287
2288         return ieee80211_request_sched_scan_start(sdata, req);
2289 }
2290
2291 static int
2292 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2293                           u64 reqid)
2294 {
2295         struct ieee80211_local *local = wiphy_priv(wiphy);
2296
2297         if (!local->ops->sched_scan_stop)
2298                 return -EOPNOTSUPP;
2299
2300         return ieee80211_request_sched_scan_stop(local);
2301 }
2302
2303 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2304                           struct cfg80211_auth_request *req)
2305 {
2306         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2307 }
2308
2309 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2310                            struct cfg80211_assoc_request *req)
2311 {
2312         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2313 }
2314
2315 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2316                             struct cfg80211_deauth_request *req)
2317 {
2318         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2319 }
2320
2321 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2322                               struct cfg80211_disassoc_request *req)
2323 {
2324         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2325 }
2326
2327 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2328                                struct cfg80211_ibss_params *params)
2329 {
2330         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2331 }
2332
2333 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2334 {
2335         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2336 }
2337
2338 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2339                               struct ocb_setup *setup)
2340 {
2341         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2342 }
2343
2344 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2345 {
2346         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2347 }
2348
2349 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2350                                     int rate[NUM_NL80211_BANDS])
2351 {
2352         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2353
2354         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2355                sizeof(int) * NUM_NL80211_BANDS);
2356
2357         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2358
2359         return 0;
2360 }
2361
2362 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2363 {
2364         struct ieee80211_local *local = wiphy_priv(wiphy);
2365         int err;
2366
2367         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2368                 ieee80211_check_fast_xmit_all(local);
2369
2370                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2371
2372                 if (err) {
2373                         ieee80211_check_fast_xmit_all(local);
2374                         return err;
2375                 }
2376         }
2377
2378         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2379             (changed & WIPHY_PARAM_DYN_ACK)) {
2380                 s16 coverage_class;
2381
2382                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2383                                         wiphy->coverage_class : -1;
2384                 err = drv_set_coverage_class(local, coverage_class);
2385
2386                 if (err)
2387                         return err;
2388         }
2389
2390         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2391                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2392
2393                 if (err)
2394                         return err;
2395         }
2396
2397         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2398                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2399                         return -EINVAL;
2400                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2401         }
2402         if (changed & WIPHY_PARAM_RETRY_LONG) {
2403                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2404                         return -EINVAL;
2405                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2406         }
2407         if (changed &
2408             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2409                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2410
2411         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2412                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2413                        WIPHY_PARAM_TXQ_QUANTUM))
2414                 ieee80211_txq_set_params(local);
2415
2416         return 0;
2417 }
2418
2419 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2420                                   struct wireless_dev *wdev,
2421                                   enum nl80211_tx_power_setting type, int mbm)
2422 {
2423         struct ieee80211_local *local = wiphy_priv(wiphy);
2424         struct ieee80211_sub_if_data *sdata;
2425         enum nl80211_tx_power_setting txp_type = type;
2426         bool update_txp_type = false;
2427         bool has_monitor = false;
2428
2429         if (wdev) {
2430                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2431
2432                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2433                         sdata = rtnl_dereference(local->monitor_sdata);
2434                         if (!sdata)
2435                                 return -EOPNOTSUPP;
2436                 }
2437
2438                 switch (type) {
2439                 case NL80211_TX_POWER_AUTOMATIC:
2440                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2441                         txp_type = NL80211_TX_POWER_LIMITED;
2442                         break;
2443                 case NL80211_TX_POWER_LIMITED:
2444                 case NL80211_TX_POWER_FIXED:
2445                         if (mbm < 0 || (mbm % 100))
2446                                 return -EOPNOTSUPP;
2447                         sdata->user_power_level = MBM_TO_DBM(mbm);
2448                         break;
2449                 }
2450
2451                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2452                         update_txp_type = true;
2453                         sdata->vif.bss_conf.txpower_type = txp_type;
2454                 }
2455
2456                 ieee80211_recalc_txpower(sdata, update_txp_type);
2457
2458                 return 0;
2459         }
2460
2461         switch (type) {
2462         case NL80211_TX_POWER_AUTOMATIC:
2463                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2464                 txp_type = NL80211_TX_POWER_LIMITED;
2465                 break;
2466         case NL80211_TX_POWER_LIMITED:
2467         case NL80211_TX_POWER_FIXED:
2468                 if (mbm < 0 || (mbm % 100))
2469                         return -EOPNOTSUPP;
2470                 local->user_power_level = MBM_TO_DBM(mbm);
2471                 break;
2472         }
2473
2474         mutex_lock(&local->iflist_mtx);
2475         list_for_each_entry(sdata, &local->interfaces, list) {
2476                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2477                         has_monitor = true;
2478                         continue;
2479                 }
2480                 sdata->user_power_level = local->user_power_level;
2481                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2482                         update_txp_type = true;
2483                 sdata->vif.bss_conf.txpower_type = txp_type;
2484         }
2485         list_for_each_entry(sdata, &local->interfaces, list) {
2486                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2487                         continue;
2488                 ieee80211_recalc_txpower(sdata, update_txp_type);
2489         }
2490         mutex_unlock(&local->iflist_mtx);
2491
2492         if (has_monitor) {
2493                 sdata = rtnl_dereference(local->monitor_sdata);
2494                 if (sdata) {
2495                         sdata->user_power_level = local->user_power_level;
2496                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2497                                 update_txp_type = true;
2498                         sdata->vif.bss_conf.txpower_type = txp_type;
2499
2500                         ieee80211_recalc_txpower(sdata, update_txp_type);
2501                 }
2502         }
2503
2504         return 0;
2505 }
2506
2507 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2508                                   struct wireless_dev *wdev,
2509                                   int *dbm)
2510 {
2511         struct ieee80211_local *local = wiphy_priv(wiphy);
2512         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2513
2514         if (local->ops->get_txpower)
2515                 return drv_get_txpower(local, sdata, dbm);
2516
2517         if (!local->use_chanctx)
2518                 *dbm = local->hw.conf.power_level;
2519         else
2520                 *dbm = sdata->vif.bss_conf.txpower;
2521
2522         return 0;
2523 }
2524
2525 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2526                                   const u8 *addr)
2527 {
2528         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2529
2530         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2531
2532         return 0;
2533 }
2534
2535 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2536 {
2537         struct ieee80211_local *local = wiphy_priv(wiphy);
2538
2539         drv_rfkill_poll(local);
2540 }
2541
2542 #ifdef CONFIG_NL80211_TESTMODE
2543 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2544                                   struct wireless_dev *wdev,
2545                                   void *data, int len)
2546 {
2547         struct ieee80211_local *local = wiphy_priv(wiphy);
2548         struct ieee80211_vif *vif = NULL;
2549
2550         if (!local->ops->testmode_cmd)
2551                 return -EOPNOTSUPP;
2552
2553         if (wdev) {
2554                 struct ieee80211_sub_if_data *sdata;
2555
2556                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2557                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2558                         vif = &sdata->vif;
2559         }
2560
2561         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2562 }
2563
2564 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2565                                    struct sk_buff *skb,
2566                                    struct netlink_callback *cb,
2567                                    void *data, int len)
2568 {
2569         struct ieee80211_local *local = wiphy_priv(wiphy);
2570
2571         if (!local->ops->testmode_dump)
2572                 return -EOPNOTSUPP;
2573
2574         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2575 }
2576 #endif
2577
2578 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2579                                 enum ieee80211_smps_mode smps_mode)
2580 {
2581         struct sta_info *sta;
2582         enum ieee80211_smps_mode old_req;
2583
2584         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2585                 return -EINVAL;
2586
2587         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2588                 return 0;
2589
2590         old_req = sdata->u.ap.req_smps;
2591         sdata->u.ap.req_smps = smps_mode;
2592
2593         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2594         if (old_req == smps_mode ||
2595             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2596                 return 0;
2597
2598         ht_dbg(sdata,
2599                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2600                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2601
2602         mutex_lock(&sdata->local->sta_mtx);
2603         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2604                 /*
2605                  * Only stations associated to our AP and
2606                  * associated VLANs
2607                  */
2608                 if (sta->sdata->bss != &sdata->u.ap)
2609                         continue;
2610
2611                 /* This station doesn't support MIMO - skip it */
2612                 if (sta_info_tx_streams(sta) == 1)
2613                         continue;
2614
2615                 /*
2616                  * Don't wake up a STA just to send the action frame
2617                  * unless we are getting more restrictive.
2618                  */
2619                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2620                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2621                                                    smps_mode)) {
2622                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2623                                sta->sta.addr);
2624                         continue;
2625                 }
2626
2627                 /*
2628                  * If the STA is not authorized, wait until it gets
2629                  * authorized and the action frame will be sent then.
2630                  */
2631                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2632                         continue;
2633
2634                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2635                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2636                                            sdata->vif.bss_conf.bssid);
2637         }
2638         mutex_unlock(&sdata->local->sta_mtx);
2639
2640         sdata->smps_mode = smps_mode;
2641         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2642
2643         return 0;
2644 }
2645
2646 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2647                                  enum ieee80211_smps_mode smps_mode)
2648 {
2649         const u8 *ap;
2650         enum ieee80211_smps_mode old_req;
2651         int err;
2652         struct sta_info *sta;
2653         bool tdls_peer_found = false;
2654
2655         lockdep_assert_held(&sdata->wdev.mtx);
2656
2657         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2658                 return -EINVAL;
2659
2660         old_req = sdata->u.mgd.req_smps;
2661         sdata->u.mgd.req_smps = smps_mode;
2662
2663         if (old_req == smps_mode &&
2664             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2665                 return 0;
2666
2667         /*
2668          * If not associated, or current association is not an HT
2669          * association, there's no need to do anything, just store
2670          * the new value until we associate.
2671          */
2672         if (!sdata->u.mgd.associated ||
2673             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2674                 return 0;
2675
2676         ap = sdata->u.mgd.associated->bssid;
2677
2678         rcu_read_lock();
2679         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2680                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2681                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2682                         continue;
2683
2684                 tdls_peer_found = true;
2685                 break;
2686         }
2687         rcu_read_unlock();
2688
2689         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2690                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2691                         smps_mode = IEEE80211_SMPS_OFF;
2692                 else
2693                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2694         }
2695
2696         /* send SM PS frame to AP */
2697         err = ieee80211_send_smps_action(sdata, smps_mode,
2698                                          ap, ap);
2699         if (err)
2700                 sdata->u.mgd.req_smps = old_req;
2701         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2702                 ieee80211_teardown_tdls_peers(sdata);
2703
2704         return err;
2705 }
2706
2707 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2708                                     bool enabled, int timeout)
2709 {
2710         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2711         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2712
2713         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2714                 return -EOPNOTSUPP;
2715
2716         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2717                 return -EOPNOTSUPP;
2718
2719         if (enabled == sdata->u.mgd.powersave &&
2720             timeout == local->dynamic_ps_forced_timeout)
2721                 return 0;
2722
2723         sdata->u.mgd.powersave = enabled;
2724         local->dynamic_ps_forced_timeout = timeout;
2725
2726         /* no change, but if automatic follow powersave */
2727         sdata_lock(sdata);
2728         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2729         sdata_unlock(sdata);
2730
2731         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2732                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2733
2734         ieee80211_recalc_ps(local);
2735         ieee80211_recalc_ps_vif(sdata);
2736         ieee80211_check_fast_rx_iface(sdata);
2737
2738         return 0;
2739 }
2740
2741 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2742                                          struct net_device *dev,
2743                                          s32 rssi_thold, u32 rssi_hyst)
2744 {
2745         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2746         struct ieee80211_vif *vif = &sdata->vif;
2747         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2748
2749         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2750             rssi_hyst == bss_conf->cqm_rssi_hyst)
2751                 return 0;
2752
2753         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2754             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2755                 return -EOPNOTSUPP;
2756
2757         bss_conf->cqm_rssi_thold = rssi_thold;
2758         bss_conf->cqm_rssi_hyst = rssi_hyst;
2759         bss_conf->cqm_rssi_low = 0;
2760         bss_conf->cqm_rssi_high = 0;
2761         sdata->u.mgd.last_cqm_event_signal = 0;
2762
2763         /* tell the driver upon association, unless already associated */
2764         if (sdata->u.mgd.associated &&
2765             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2766                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2767
2768         return 0;
2769 }
2770
2771 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2772                                                struct net_device *dev,
2773                                                s32 rssi_low, s32 rssi_high)
2774 {
2775         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2776         struct ieee80211_vif *vif = &sdata->vif;
2777         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2778
2779         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2780                 return -EOPNOTSUPP;
2781
2782         bss_conf->cqm_rssi_low = rssi_low;
2783         bss_conf->cqm_rssi_high = rssi_high;
2784         bss_conf->cqm_rssi_thold = 0;
2785         bss_conf->cqm_rssi_hyst = 0;
2786         sdata->u.mgd.last_cqm_event_signal = 0;
2787
2788         /* tell the driver upon association, unless already associated */
2789         if (sdata->u.mgd.associated &&
2790             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2791                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2792
2793         return 0;
2794 }
2795
2796 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2797                                       struct net_device *dev,
2798                                       const u8 *addr,
2799                                       const struct cfg80211_bitrate_mask *mask)
2800 {
2801         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2802         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2803         int i, ret;
2804
2805         if (!ieee80211_sdata_running(sdata))
2806                 return -ENETDOWN;
2807
2808         /*
2809          * If active validate the setting and reject it if it doesn't leave
2810          * at least one basic rate usable, since we really have to be able
2811          * to send something, and if we're an AP we have to be able to do
2812          * so at a basic rate so that all clients can receive it.
2813          */
2814         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2815             sdata->vif.bss_conf.chandef.chan) {
2816                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2817                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2818
2819                 if (!(mask->control[band].legacy & basic_rates))
2820                         return -EINVAL;
2821         }
2822
2823         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2824                 ret = drv_set_bitrate_mask(local, sdata, mask);
2825                 if (ret)
2826                         return ret;
2827         }
2828
2829         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2830                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2831                 int j;
2832
2833                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2834                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2835                        sizeof(mask->control[i].ht_mcs));
2836                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2837                        mask->control[i].vht_mcs,
2838                        sizeof(mask->control[i].vht_mcs));
2839
2840                 sdata->rc_has_mcs_mask[i] = false;
2841                 sdata->rc_has_vht_mcs_mask[i] = false;
2842                 if (!sband)
2843                         continue;
2844
2845                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2846                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2847                                 sdata->rc_has_mcs_mask[i] = true;
2848                                 break;
2849                         }
2850                 }
2851
2852                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2853                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2854                                 sdata->rc_has_vht_mcs_mask[i] = true;
2855                                 break;
2856                         }
2857                 }
2858         }
2859
2860         return 0;
2861 }
2862
2863 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2864                                            struct net_device *dev,
2865                                            struct cfg80211_chan_def *chandef,
2866                                            u32 cac_time_ms)
2867 {
2868         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2869         struct ieee80211_local *local = sdata->local;
2870         int err;
2871
2872         mutex_lock(&local->mtx);
2873         if (!list_empty(&local->roc_list) || local->scanning) {
2874                 err = -EBUSY;
2875                 goto out_unlock;
2876         }
2877
2878         /* whatever, but channel contexts should not complain about that one */
2879         sdata->smps_mode = IEEE80211_SMPS_OFF;
2880         sdata->needed_rx_chains = local->rx_chains;
2881
2882         err = ieee80211_vif_use_channel(sdata, chandef,
2883                                         IEEE80211_CHANCTX_SHARED);
2884         if (err)
2885                 goto out_unlock;
2886
2887         ieee80211_queue_delayed_work(&sdata->local->hw,
2888                                      &sdata->dfs_cac_timer_work,
2889                                      msecs_to_jiffies(cac_time_ms));
2890
2891  out_unlock:
2892         mutex_unlock(&local->mtx);
2893         return err;
2894 }
2895
2896 static struct cfg80211_beacon_data *
2897 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2898 {
2899         struct cfg80211_beacon_data *new_beacon;
2900         u8 *pos;
2901         int len;
2902
2903         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2904               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2905               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
2906
2907         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2908         if (!new_beacon)
2909                 return NULL;
2910
2911         pos = (u8 *)(new_beacon + 1);
2912         if (beacon->head_len) {
2913                 new_beacon->head_len = beacon->head_len;
2914                 new_beacon->head = pos;
2915                 memcpy(pos, beacon->head, beacon->head_len);
2916                 pos += beacon->head_len;
2917         }
2918         if (beacon->tail_len) {
2919                 new_beacon->tail_len = beacon->tail_len;
2920                 new_beacon->tail = pos;
2921                 memcpy(pos, beacon->tail, beacon->tail_len);
2922                 pos += beacon->tail_len;
2923         }
2924         if (beacon->beacon_ies_len) {
2925                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2926                 new_beacon->beacon_ies = pos;
2927                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2928                 pos += beacon->beacon_ies_len;
2929         }
2930         if (beacon->proberesp_ies_len) {
2931                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2932                 new_beacon->proberesp_ies = pos;
2933                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2934                 pos += beacon->proberesp_ies_len;
2935         }
2936         if (beacon->assocresp_ies_len) {
2937                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2938                 new_beacon->assocresp_ies = pos;
2939                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2940                 pos += beacon->assocresp_ies_len;
2941         }
2942         if (beacon->probe_resp_len) {
2943                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2944                 new_beacon->probe_resp = pos;
2945                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2946                 pos += beacon->probe_resp_len;
2947         }
2948
2949         /* might copy -1, meaning no changes requested */
2950         new_beacon->ftm_responder = beacon->ftm_responder;
2951         if (beacon->lci) {
2952                 new_beacon->lci_len = beacon->lci_len;
2953                 new_beacon->lci = pos;
2954                 memcpy(pos, beacon->lci, beacon->lci_len);
2955                 pos += beacon->lci_len;
2956         }
2957         if (beacon->civicloc) {
2958                 new_beacon->civicloc_len = beacon->civicloc_len;
2959                 new_beacon->civicloc = pos;
2960                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
2961                 pos += beacon->civicloc_len;
2962         }
2963
2964         return new_beacon;
2965 }
2966
2967 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2968 {
2969         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2970
2971         ieee80211_queue_work(&sdata->local->hw,
2972                              &sdata->csa_finalize_work);
2973 }
2974 EXPORT_SYMBOL(ieee80211_csa_finish);
2975
2976 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2977                                           u32 *changed)
2978 {
2979         int err;
2980
2981         switch (sdata->vif.type) {
2982         case NL80211_IFTYPE_AP:
2983                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2984                                               NULL);
2985                 kfree(sdata->u.ap.next_beacon);
2986                 sdata->u.ap.next_beacon = NULL;
2987
2988                 if (err < 0)
2989                         return err;
2990                 *changed |= err;
2991                 break;
2992         case NL80211_IFTYPE_ADHOC:
2993                 err = ieee80211_ibss_finish_csa(sdata);
2994                 if (err < 0)
2995                         return err;
2996                 *changed |= err;
2997                 break;
2998 #ifdef CONFIG_MAC80211_MESH
2999         case NL80211_IFTYPE_MESH_POINT:
3000                 err = ieee80211_mesh_finish_csa(sdata);
3001                 if (err < 0)
3002                         return err;
3003                 *changed |= err;
3004                 break;
3005 #endif
3006         default:
3007                 WARN_ON(1);
3008                 return -EINVAL;
3009         }
3010
3011         return 0;
3012 }
3013
3014 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3015 {
3016         struct ieee80211_local *local = sdata->local;
3017         u32 changed = 0;
3018         int err;
3019
3020         sdata_assert_lock(sdata);
3021         lockdep_assert_held(&local->mtx);
3022         lockdep_assert_held(&local->chanctx_mtx);
3023
3024         /*
3025          * using reservation isn't immediate as it may be deferred until later
3026          * with multi-vif. once reservation is complete it will re-schedule the
3027          * work with no reserved_chanctx so verify chandef to check if it
3028          * completed successfully
3029          */
3030
3031         if (sdata->reserved_chanctx) {
3032                 /*
3033                  * with multi-vif csa driver may call ieee80211_csa_finish()
3034                  * many times while waiting for other interfaces to use their
3035                  * reservations
3036                  */
3037                 if (sdata->reserved_ready)
3038                         return 0;
3039
3040                 return ieee80211_vif_use_reserved_context(sdata);
3041         }
3042
3043         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3044                                         &sdata->csa_chandef))
3045                 return -EINVAL;
3046
3047         sdata->vif.csa_active = false;
3048
3049         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3050         if (err)
3051                 return err;
3052
3053         ieee80211_bss_info_change_notify(sdata, changed);
3054
3055         if (sdata->csa_block_tx) {
3056                 ieee80211_wake_vif_queues(local, sdata,
3057                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3058                 sdata->csa_block_tx = false;
3059         }
3060
3061         err = drv_post_channel_switch(sdata);
3062         if (err)
3063                 return err;
3064
3065         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3066
3067         return 0;
3068 }
3069
3070 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3071 {
3072         if (__ieee80211_csa_finalize(sdata)) {
3073                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3074                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3075                                     GFP_KERNEL);
3076         }
3077 }
3078
3079 void ieee80211_csa_finalize_work(struct work_struct *work)
3080 {
3081         struct ieee80211_sub_if_data *sdata =
3082                 container_of(work, struct ieee80211_sub_if_data,
3083                              csa_finalize_work);
3084         struct ieee80211_local *local = sdata->local;
3085
3086         sdata_lock(sdata);
3087         mutex_lock(&local->mtx);
3088         mutex_lock(&local->chanctx_mtx);
3089
3090         /* AP might have been stopped while waiting for the lock. */
3091         if (!sdata->vif.csa_active)
3092                 goto unlock;
3093
3094         if (!ieee80211_sdata_running(sdata))
3095                 goto unlock;
3096
3097         ieee80211_csa_finalize(sdata);
3098
3099 unlock:
3100         mutex_unlock(&local->chanctx_mtx);
3101         mutex_unlock(&local->mtx);
3102         sdata_unlock(sdata);
3103 }
3104
3105 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3106                                     struct cfg80211_csa_settings *params,
3107                                     u32 *changed)
3108 {
3109         struct ieee80211_csa_settings csa = {};
3110         int err;
3111
3112         switch (sdata->vif.type) {
3113         case NL80211_IFTYPE_AP:
3114                 sdata->u.ap.next_beacon =
3115                         cfg80211_beacon_dup(&params->beacon_after);
3116                 if (!sdata->u.ap.next_beacon)
3117                         return -ENOMEM;
3118
3119                 /*
3120                  * With a count of 0, we don't have to wait for any
3121                  * TBTT before switching, so complete the CSA
3122                  * immediately.  In theory, with a count == 1 we
3123                  * should delay the switch until just before the next
3124                  * TBTT, but that would complicate things so we switch
3125                  * immediately too.  If we would delay the switch
3126                  * until the next TBTT, we would have to set the probe
3127                  * response here.
3128                  *
3129                  * TODO: A channel switch with count <= 1 without
3130                  * sending a CSA action frame is kind of useless,
3131                  * because the clients won't know we're changing
3132                  * channels.  The action frame must be implemented
3133                  * either here or in the userspace.
3134                  */
3135                 if (params->count <= 1)
3136                         break;
3137
3138                 if ((params->n_counter_offsets_beacon >
3139                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3140                     (params->n_counter_offsets_presp >
3141                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3142                         return -EINVAL;
3143
3144                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3145                 csa.counter_offsets_presp = params->counter_offsets_presp;
3146                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3147                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3148                 csa.count = params->count;
3149
3150                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3151                 if (err < 0) {
3152                         kfree(sdata->u.ap.next_beacon);
3153                         return err;
3154                 }
3155                 *changed |= err;
3156
3157                 break;
3158         case NL80211_IFTYPE_ADHOC:
3159                 if (!sdata->vif.bss_conf.ibss_joined)
3160                         return -EINVAL;
3161
3162                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3163                         return -EINVAL;
3164
3165                 switch (params->chandef.width) {
3166                 case NL80211_CHAN_WIDTH_40:
3167                         if (cfg80211_get_chandef_type(&params->chandef) !=
3168                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3169                                 return -EINVAL;
3170                 case NL80211_CHAN_WIDTH_5:
3171                 case NL80211_CHAN_WIDTH_10:
3172                 case NL80211_CHAN_WIDTH_20_NOHT:
3173                 case NL80211_CHAN_WIDTH_20:
3174                         break;
3175                 default:
3176                         return -EINVAL;
3177                 }
3178
3179                 /* changes into another band are not supported */
3180                 if (sdata->u.ibss.chandef.chan->band !=
3181                     params->chandef.chan->band)
3182                         return -EINVAL;
3183
3184                 /* see comments in the NL80211_IFTYPE_AP block */
3185                 if (params->count > 1) {
3186                         err = ieee80211_ibss_csa_beacon(sdata, params);
3187                         if (err < 0)
3188                                 return err;
3189                         *changed |= err;
3190                 }
3191
3192                 ieee80211_send_action_csa(sdata, params);
3193
3194                 break;
3195 #ifdef CONFIG_MAC80211_MESH
3196         case NL80211_IFTYPE_MESH_POINT: {
3197                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3198
3199                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3200                         return -EINVAL;
3201
3202                 /* changes into another band are not supported */
3203                 if (sdata->vif.bss_conf.chandef.chan->band !=
3204                     params->chandef.chan->band)
3205                         return -EINVAL;
3206
3207                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3208                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3209                         if (!ifmsh->pre_value)
3210                                 ifmsh->pre_value = 1;
3211                         else
3212                                 ifmsh->pre_value++;
3213                 }
3214
3215                 /* see comments in the NL80211_IFTYPE_AP block */
3216                 if (params->count > 1) {
3217                         err = ieee80211_mesh_csa_beacon(sdata, params);
3218                         if (err < 0) {
3219                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3220                                 return err;
3221                         }
3222                         *changed |= err;
3223                 }
3224
3225                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3226                         ieee80211_send_action_csa(sdata, params);
3227
3228                 break;
3229                 }
3230 #endif
3231         default:
3232                 return -EOPNOTSUPP;
3233         }
3234
3235         return 0;
3236 }
3237
3238 static int
3239 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3240                            struct cfg80211_csa_settings *params)
3241 {
3242         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3243         struct ieee80211_local *local = sdata->local;
3244         struct ieee80211_channel_switch ch_switch;
3245         struct ieee80211_chanctx_conf *conf;
3246         struct ieee80211_chanctx *chanctx;
3247         u32 changed = 0;
3248         int err;
3249
3250         sdata_assert_lock(sdata);
3251         lockdep_assert_held(&local->mtx);
3252
3253         if (!list_empty(&local->roc_list) || local->scanning)
3254                 return -EBUSY;
3255
3256         if (sdata->wdev.cac_started)
3257                 return -EBUSY;
3258
3259         if (cfg80211_chandef_identical(&params->chandef,
3260                                        &sdata->vif.bss_conf.chandef))
3261                 return -EINVAL;
3262
3263         /* don't allow another channel switch if one is already active. */
3264         if (sdata->vif.csa_active)
3265                 return -EBUSY;
3266
3267         mutex_lock(&local->chanctx_mtx);
3268         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3269                                          lockdep_is_held(&local->chanctx_mtx));
3270         if (!conf) {
3271                 err = -EBUSY;
3272                 goto out;
3273         }
3274
3275         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3276
3277         ch_switch.timestamp = 0;
3278         ch_switch.device_timestamp = 0;
3279         ch_switch.block_tx = params->block_tx;
3280         ch_switch.chandef = params->chandef;
3281         ch_switch.count = params->count;
3282
3283         err = drv_pre_channel_switch(sdata, &ch_switch);
3284         if (err)
3285                 goto out;
3286
3287         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3288                                             chanctx->mode,
3289                                             params->radar_required);
3290         if (err)
3291                 goto out;
3292
3293         /* if reservation is invalid then this will fail */
3294         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3295         if (err) {
3296                 ieee80211_vif_unreserve_chanctx(sdata);
3297                 goto out;
3298         }
3299
3300         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3301         if (err) {
3302                 ieee80211_vif_unreserve_chanctx(sdata);
3303                 goto out;
3304         }
3305
3306         sdata->csa_chandef = params->chandef;
3307         sdata->csa_block_tx = params->block_tx;
3308         sdata->vif.csa_active = true;
3309
3310         if (sdata->csa_block_tx)
3311                 ieee80211_stop_vif_queues(local, sdata,
3312                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3313
3314         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3315                                           params->count);
3316
3317         if (changed) {
3318                 ieee80211_bss_info_change_notify(sdata, changed);
3319                 drv_channel_switch_beacon(sdata, &params->chandef);
3320         } else {
3321                 /* if the beacon didn't change, we can finalize immediately */
3322                 ieee80211_csa_finalize(sdata);
3323         }
3324
3325 out:
3326         mutex_unlock(&local->chanctx_mtx);
3327         return err;
3328 }
3329
3330 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3331                              struct cfg80211_csa_settings *params)
3332 {
3333         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3334         struct ieee80211_local *local = sdata->local;
3335         int err;
3336
3337         mutex_lock(&local->mtx);
3338         err = __ieee80211_channel_switch(wiphy, dev, params);
3339         mutex_unlock(&local->mtx);
3340
3341         return err;
3342 }
3343
3344 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3345 {
3346         lockdep_assert_held(&local->mtx);
3347
3348         local->roc_cookie_counter++;
3349
3350         /* wow, you wrapped 64 bits ... more likely a bug */
3351         if (WARN_ON(local->roc_cookie_counter == 0))
3352                 local->roc_cookie_counter++;
3353
3354         return local->roc_cookie_counter;
3355 }
3356
3357 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3358                              u64 *cookie, gfp_t gfp)
3359 {
3360         unsigned long spin_flags;
3361         struct sk_buff *ack_skb;
3362         int id;
3363
3364         ack_skb = skb_copy(skb, gfp);
3365         if (!ack_skb)
3366                 return -ENOMEM;
3367
3368         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3369         id = idr_alloc(&local->ack_status_frames, ack_skb,
3370                        1, 0x10000, GFP_ATOMIC);
3371         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3372
3373         if (id < 0) {
3374                 kfree_skb(ack_skb);
3375                 return -ENOMEM;
3376         }
3377
3378         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3379
3380         *cookie = ieee80211_mgmt_tx_cookie(local);
3381         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3382
3383         return 0;
3384 }
3385
3386 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3387                                           struct wireless_dev *wdev,
3388                                           u16 frame_type, bool reg)
3389 {
3390         struct ieee80211_local *local = wiphy_priv(wiphy);
3391         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3392
3393         switch (frame_type) {
3394         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3395                 if (reg) {
3396                         local->probe_req_reg++;
3397                         sdata->vif.probe_req_reg++;
3398                 } else {
3399                         if (local->probe_req_reg)
3400                                 local->probe_req_reg--;
3401
3402                         if (sdata->vif.probe_req_reg)
3403                                 sdata->vif.probe_req_reg--;
3404                 }
3405
3406                 if (!local->open_count)
3407                         break;
3408
3409                 if (sdata->vif.probe_req_reg == 1)
3410                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3411                                                 FIF_PROBE_REQ);
3412                 else if (sdata->vif.probe_req_reg == 0)
3413                         drv_config_iface_filter(local, sdata, 0,
3414                                                 FIF_PROBE_REQ);
3415
3416                 ieee80211_configure_filter(local);
3417                 break;
3418         default:
3419                 break;
3420         }
3421 }
3422
3423 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3424 {
3425         struct ieee80211_local *local = wiphy_priv(wiphy);
3426
3427         if (local->started)
3428                 return -EOPNOTSUPP;
3429
3430         return drv_set_antenna(local, tx_ant, rx_ant);
3431 }
3432
3433 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3434 {
3435         struct ieee80211_local *local = wiphy_priv(wiphy);
3436
3437         return drv_get_antenna(local, tx_ant, rx_ant);
3438 }
3439
3440 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3441                                     struct net_device *dev,
3442                                     struct cfg80211_gtk_rekey_data *data)
3443 {
3444         struct ieee80211_local *local = wiphy_priv(wiphy);
3445         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3446
3447         if (!local->ops->set_rekey_data)
3448                 return -EOPNOTSUPP;
3449
3450         drv_set_rekey_data(local, sdata, data);
3451
3452         return 0;
3453 }
3454
3455 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3456                                   const u8 *peer, u64 *cookie)
3457 {
3458         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3459         struct ieee80211_local *local = sdata->local;
3460         struct ieee80211_qos_hdr *nullfunc;
3461         struct sk_buff *skb;
3462         int size = sizeof(*nullfunc);
3463         __le16 fc;
3464         bool qos;
3465         struct ieee80211_tx_info *info;
3466         struct sta_info *sta;
3467         struct ieee80211_chanctx_conf *chanctx_conf;
3468         enum nl80211_band band;
3469         int ret;
3470
3471         /* the lock is needed to assign the cookie later */
3472         mutex_lock(&local->mtx);
3473
3474         rcu_read_lock();
3475         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3476         if (WARN_ON(!chanctx_conf)) {
3477                 ret = -EINVAL;
3478                 goto unlock;
3479         }
3480         band = chanctx_conf->def.chan->band;
3481         sta = sta_info_get_bss(sdata, peer);
3482         if (sta) {
3483                 qos = sta->sta.wme;
3484         } else {
3485                 ret = -ENOLINK;
3486                 goto unlock;
3487         }
3488
3489         if (qos) {
3490                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3491                                  IEEE80211_STYPE_QOS_NULLFUNC |
3492                                  IEEE80211_FCTL_FROMDS);
3493         } else {
3494                 size -= 2;
3495                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3496                                  IEEE80211_STYPE_NULLFUNC |
3497                                  IEEE80211_FCTL_FROMDS);
3498         }
3499
3500         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3501         if (!skb) {
3502                 ret = -ENOMEM;
3503                 goto unlock;
3504         }
3505
3506         skb->dev = dev;
3507
3508         skb_reserve(skb, local->hw.extra_tx_headroom);
3509
3510         nullfunc = skb_put(skb, size);
3511         nullfunc->frame_control = fc;
3512         nullfunc->duration_id = 0;
3513         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3514         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3515         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3516         nullfunc->seq_ctrl = 0;
3517
3518         info = IEEE80211_SKB_CB(skb);
3519
3520         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3521                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3522         info->band = band;
3523
3524         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3525         skb->priority = 7;
3526         if (qos)
3527                 nullfunc->qos_ctrl = cpu_to_le16(7);
3528
3529         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3530         if (ret) {
3531                 kfree_skb(skb);
3532                 goto unlock;
3533         }
3534
3535         local_bh_disable();
3536         ieee80211_xmit(sdata, sta, skb, 0);
3537         local_bh_enable();
3538
3539         ret = 0;
3540 unlock:
3541         rcu_read_unlock();
3542         mutex_unlock(&local->mtx);
3543
3544         return ret;
3545 }
3546
3547 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3548                                      struct wireless_dev *wdev,
3549                                      struct cfg80211_chan_def *chandef)
3550 {
3551         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3552         struct ieee80211_local *local = wiphy_priv(wiphy);
3553         struct ieee80211_chanctx_conf *chanctx_conf;
3554         int ret = -ENODATA;
3555
3556         rcu_read_lock();
3557         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3558         if (chanctx_conf) {
3559                 *chandef = sdata->vif.bss_conf.chandef;
3560                 ret = 0;
3561         } else if (local->open_count > 0 &&
3562                    local->open_count == local->monitors &&
3563                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3564                 if (local->use_chanctx)
3565                         *chandef = local->monitor_chandef;
3566                 else
3567                         *chandef = local->_oper_chandef;
3568                 ret = 0;
3569         }
3570         rcu_read_unlock();
3571
3572         return ret;
3573 }
3574
3575 #ifdef CONFIG_PM
3576 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3577 {
3578         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3579 }
3580 #endif
3581
3582 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3583                                  struct net_device *dev,
3584                                  struct cfg80211_qos_map *qos_map)
3585 {
3586         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3587         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3588
3589         if (qos_map) {
3590                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3591                 if (!new_qos_map)
3592                         return -ENOMEM;
3593                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3594         } else {
3595                 /* A NULL qos_map was passed to disable QoS mapping */
3596                 new_qos_map = NULL;
3597         }
3598
3599         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3600         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3601         if (old_qos_map)
3602                 kfree_rcu(old_qos_map, rcu_head);
3603
3604         return 0;
3605 }
3606
3607 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3608                                       struct net_device *dev,
3609                                       struct cfg80211_chan_def *chandef)
3610 {
3611         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3612         int ret;
3613         u32 changed = 0;
3614
3615         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3616         if (ret == 0)
3617                 ieee80211_bss_info_change_notify(sdata, changed);
3618
3619         return ret;
3620 }
3621
3622 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3623                                u8 tsid, const u8 *peer, u8 up,
3624                                u16 admitted_time)
3625 {
3626         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3627         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3628         int ac = ieee802_1d_to_ac[up];
3629
3630         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3631                 return -EOPNOTSUPP;
3632
3633         if (!(sdata->wmm_acm & BIT(up)))
3634                 return -EINVAL;
3635
3636         if (ifmgd->tx_tspec[ac].admitted_time)
3637                 return -EBUSY;
3638
3639         if (admitted_time) {
3640                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3641                 ifmgd->tx_tspec[ac].tsid = tsid;
3642                 ifmgd->tx_tspec[ac].up = up;
3643         }
3644
3645         return 0;
3646 }
3647
3648 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3649                                u8 tsid, const u8 *peer)
3650 {
3651         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3652         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3653         struct ieee80211_local *local = wiphy_priv(wiphy);
3654         int ac;
3655
3656         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3657                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3658
3659                 /* skip unused entries */
3660                 if (!tx_tspec->admitted_time)
3661                         continue;
3662
3663                 if (tx_tspec->tsid != tsid)
3664                         continue;
3665
3666                 /* due to this new packets will be reassigned to non-ACM ACs */
3667                 tx_tspec->up = -1;
3668
3669                 /* Make sure that all packets have been sent to avoid to
3670                  * restore the QoS params on packets that are still on the
3671                  * queues.
3672                  */
3673                 synchronize_net();
3674                 ieee80211_flush_queues(local, sdata, false);
3675
3676                 /* restore the normal QoS parameters
3677                  * (unconditionally to avoid races)
3678                  */
3679                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3680                 tx_tspec->downgraded = false;
3681                 ieee80211_sta_handle_tspec_ac_params(sdata);
3682
3683                 /* finally clear all the data */
3684                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3685
3686                 return 0;
3687         }
3688
3689         return -ENOENT;
3690 }
3691
3692 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3693                                    u8 inst_id,
3694                                    enum nl80211_nan_func_term_reason reason,
3695                                    gfp_t gfp)
3696 {
3697         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3698         struct cfg80211_nan_func *func;
3699         u64 cookie;
3700
3701         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3702                 return;
3703
3704         spin_lock_bh(&sdata->u.nan.func_lock);
3705
3706         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3707         if (WARN_ON(!func)) {
3708                 spin_unlock_bh(&sdata->u.nan.func_lock);
3709                 return;
3710         }
3711
3712         cookie = func->cookie;
3713         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3714
3715         spin_unlock_bh(&sdata->u.nan.func_lock);
3716
3717         cfg80211_free_nan_func(func);
3718
3719         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3720                                      reason, cookie, gfp);
3721 }
3722 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3723
3724 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3725                               struct cfg80211_nan_match_params *match,
3726                               gfp_t gfp)
3727 {
3728         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3729         struct cfg80211_nan_func *func;
3730
3731         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3732                 return;
3733
3734         spin_lock_bh(&sdata->u.nan.func_lock);
3735
3736         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3737         if (WARN_ON(!func)) {
3738                 spin_unlock_bh(&sdata->u.nan.func_lock);
3739                 return;
3740         }
3741         match->cookie = func->cookie;
3742
3743         spin_unlock_bh(&sdata->u.nan.func_lock);
3744
3745         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3746 }
3747 EXPORT_SYMBOL(ieee80211_nan_func_match);
3748
3749 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3750                                               struct net_device *dev,
3751                                               const bool enabled)
3752 {
3753         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3754
3755         sdata->u.ap.multicast_to_unicast = enabled;
3756
3757         return 0;
3758 }
3759
3760 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3761                               struct txq_info *txqi)
3762 {
3763         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3764                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3765                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3766         }
3767
3768         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3769                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3770                 txqstats->backlog_packets = txqi->tin.backlog_packets;
3771         }
3772
3773         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3774                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3775                 txqstats->flows = txqi->tin.flows;
3776         }
3777
3778         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3779                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3780                 txqstats->drops = txqi->cstats.drop_count;
3781         }
3782
3783         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3784                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3785                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3786         }
3787
3788         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3789                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3790                 txqstats->overlimit = txqi->tin.overlimit;
3791         }
3792
3793         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3794                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3795                 txqstats->collisions = txqi->tin.collisions;
3796         }
3797
3798         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3799                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3800                 txqstats->tx_bytes = txqi->tin.tx_bytes;
3801         }
3802
3803         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3804                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3805                 txqstats->tx_packets = txqi->tin.tx_packets;
3806         }
3807 }
3808
3809 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3810                                    struct wireless_dev *wdev,
3811                                    struct cfg80211_txq_stats *txqstats)
3812 {
3813         struct ieee80211_local *local = wiphy_priv(wiphy);
3814         struct ieee80211_sub_if_data *sdata;
3815         int ret = 0;
3816
3817         if (!local->ops->wake_tx_queue)
3818                 return 1;
3819
3820         spin_lock_bh(&local->fq.lock);
3821         rcu_read_lock();
3822
3823         if (wdev) {
3824                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3825                 if (!sdata->vif.txq) {
3826                         ret = 1;
3827                         goto out;
3828                 }
3829                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3830         } else {
3831                 /* phy stats */
3832                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3833                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3834                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3835                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3836                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
3837                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3838                 txqstats->backlog_packets = local->fq.backlog;
3839                 txqstats->backlog_bytes = local->fq.memory_usage;
3840                 txqstats->overlimit = local->fq.overlimit;
3841                 txqstats->overmemory = local->fq.overmemory;
3842                 txqstats->collisions = local->fq.collisions;
3843                 txqstats->max_flows = local->fq.flows_cnt;
3844         }
3845
3846 out:
3847         rcu_read_unlock();
3848         spin_unlock_bh(&local->fq.lock);
3849
3850         return ret;
3851 }
3852
3853 static int
3854 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
3855                                   struct net_device *dev,
3856                                   struct cfg80211_ftm_responder_stats *ftm_stats)
3857 {
3858         struct ieee80211_local *local = wiphy_priv(wiphy);
3859         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3860
3861         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
3862 }
3863
3864 static int
3865 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3866                      struct cfg80211_pmsr_request *request)
3867 {
3868         struct ieee80211_local *local = wiphy_priv(wiphy);
3869         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3870
3871         return drv_start_pmsr(local, sdata, request);
3872 }
3873
3874 static void
3875 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3876                      struct cfg80211_pmsr_request *request)
3877 {
3878         struct ieee80211_local *local = wiphy_priv(wiphy);
3879         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3880
3881         return drv_abort_pmsr(local, sdata, request);
3882 }
3883
3884 const struct cfg80211_ops mac80211_config_ops = {
3885         .add_virtual_intf = ieee80211_add_iface,
3886         .del_virtual_intf = ieee80211_del_iface,
3887         .change_virtual_intf = ieee80211_change_iface,
3888         .start_p2p_device = ieee80211_start_p2p_device,
3889         .stop_p2p_device = ieee80211_stop_p2p_device,
3890         .add_key = ieee80211_add_key,
3891         .del_key = ieee80211_del_key,
3892         .get_key = ieee80211_get_key,
3893         .set_default_key = ieee80211_config_default_key,
3894         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3895         .start_ap = ieee80211_start_ap,
3896         .change_beacon = ieee80211_change_beacon,
3897         .stop_ap = ieee80211_stop_ap,
3898         .add_station = ieee80211_add_station,
3899         .del_station = ieee80211_del_station,
3900         .change_station = ieee80211_change_station,
3901         .get_station = ieee80211_get_station,
3902         .dump_station = ieee80211_dump_station,
3903         .dump_survey = ieee80211_dump_survey,
3904 #ifdef CONFIG_MAC80211_MESH
3905         .add_mpath = ieee80211_add_mpath,
3906         .del_mpath = ieee80211_del_mpath,
3907         .change_mpath = ieee80211_change_mpath,
3908         .get_mpath = ieee80211_get_mpath,
3909         .dump_mpath = ieee80211_dump_mpath,
3910         .get_mpp = ieee80211_get_mpp,
3911         .dump_mpp = ieee80211_dump_mpp,
3912         .update_mesh_config = ieee80211_update_mesh_config,
3913         .get_mesh_config = ieee80211_get_mesh_config,
3914         .join_mesh = ieee80211_join_mesh,
3915         .leave_mesh = ieee80211_leave_mesh,
3916 #endif
3917         .join_ocb = ieee80211_join_ocb,
3918         .leave_ocb = ieee80211_leave_ocb,
3919         .change_bss = ieee80211_change_bss,
3920         .set_txq_params = ieee80211_set_txq_params,
3921         .set_monitor_channel = ieee80211_set_monitor_channel,
3922         .suspend = ieee80211_suspend,
3923         .resume = ieee80211_resume,
3924         .scan = ieee80211_scan,
3925         .abort_scan = ieee80211_abort_scan,
3926         .sched_scan_start = ieee80211_sched_scan_start,
3927         .sched_scan_stop = ieee80211_sched_scan_stop,
3928         .auth = ieee80211_auth,
3929         .assoc = ieee80211_assoc,
3930         .deauth = ieee80211_deauth,
3931         .disassoc = ieee80211_disassoc,
3932         .join_ibss = ieee80211_join_ibss,
3933         .leave_ibss = ieee80211_leave_ibss,
3934         .set_mcast_rate = ieee80211_set_mcast_rate,
3935         .set_wiphy_params = ieee80211_set_wiphy_params,
3936         .set_tx_power = ieee80211_set_tx_power,
3937         .get_tx_power = ieee80211_get_tx_power,
3938         .set_wds_peer = ieee80211_set_wds_peer,
3939         .rfkill_poll = ieee80211_rfkill_poll,
3940         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3941         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3942         .set_power_mgmt = ieee80211_set_power_mgmt,
3943         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3944         .remain_on_channel = ieee80211_remain_on_channel,
3945         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3946         .mgmt_tx = ieee80211_mgmt_tx,
3947         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3948         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3949         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3950         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3951         .set_antenna = ieee80211_set_antenna,
3952         .get_antenna = ieee80211_get_antenna,
3953         .set_rekey_data = ieee80211_set_rekey_data,
3954         .tdls_oper = ieee80211_tdls_oper,
3955         .tdls_mgmt = ieee80211_tdls_mgmt,
3956         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3957         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3958         .probe_client = ieee80211_probe_client,
3959         .set_noack_map = ieee80211_set_noack_map,
3960 #ifdef CONFIG_PM
3961         .set_wakeup = ieee80211_set_wakeup,
3962 #endif
3963         .get_channel = ieee80211_cfg_get_channel,
3964         .start_radar_detection = ieee80211_start_radar_detection,
3965         .channel_switch = ieee80211_channel_switch,
3966         .set_qos_map = ieee80211_set_qos_map,
3967         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3968         .add_tx_ts = ieee80211_add_tx_ts,
3969         .del_tx_ts = ieee80211_del_tx_ts,
3970         .start_nan = ieee80211_start_nan,
3971         .stop_nan = ieee80211_stop_nan,
3972         .nan_change_conf = ieee80211_nan_change_conf,
3973         .add_nan_func = ieee80211_add_nan_func,
3974         .del_nan_func = ieee80211_del_nan_func,
3975         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3976         .tx_control_port = ieee80211_tx_control_port,
3977         .get_txq_stats = ieee80211_get_txq_stats,
3978         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
3979         .start_pmsr = ieee80211_start_pmsr,
3980         .abort_pmsr = ieee80211_abort_pmsr,
3981 };