net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2016 Intel Deutschland GmbH
   7  *
   8  * This file is GPLv2 as found in COPYING.
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/if_ether.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "driver-ops.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr.flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0) {
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71                 ieee80211_check_fast_rx_iface(sdata);
  72         } else if (type == NL80211_IFTYPE_STATION &&
  73                    params && params->use_4addr >= 0) {
  74                 sdata->u.mgd.use_4addr = params->use_4addr;
  75         }
  76
  77         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
  78                 struct ieee80211_local *local = sdata->local;
  79                 struct ieee80211_sub_if_data *monitor_sdata;
  80                 u32 mu_mntr_cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
  81
  82                 monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83                 if (monitor_sdata &&
  84                     wiphy_ext_feature_isset(wiphy, mu_mntr_cap_flag)) {
  85                         memcpy(monitor_sdata->vif.bss_conf.mu_group.membership,
  86                                params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  87                         memcpy(monitor_sdata->vif.bss_conf.mu_group.position,
  88                                params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  89                                WLAN_USER_POSITION_LEN);
  90                         monitor_sdata->vif.mu_mimo_owner = true;
  91                         ieee80211_bss_info_change_notify(monitor_sdata,
  92                                                          BSS_CHANGED_MU_GROUPS);
  93
  94                         ether_addr_copy(monitor_sdata->u.mntr.mu_follow_addr,
  95                                         params->macaddr);
  96                 }
  97
  98                 if (!flags)
  99                         return 0;
 100
 101                 if (ieee80211_sdata_running(sdata)) {
 102                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
 103                                    MONITOR_FLAG_ACTIVE;
 104
 105                         /*
 106                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
 107                          * MONITOR_FLAG_ACTIVE to be changed while the
 108                          * interface is up.
 109                          * Else we would need to add a lot of cruft
 110                          * to update everything:
 111                          *      cooked_mntrs, monitor and all fif_* counters
 112                          *      reconfigure hardware
 113                          */
 114                         if ((*flags & mask) != (sdata->u.mntr.flags & mask))
 115                                 return -EBUSY;
 116
 117                         ieee80211_adjust_monitor_flags(sdata, -1);
 118                         sdata->u.mntr.flags = *flags;
 119                         ieee80211_adjust_monitor_flags(sdata, 1);
 120
 121                         ieee80211_configure_filter(local);
 122                 } else {
 123                         /*
 124                          * Because the interface is down, ieee80211_do_stop
 125                          * and ieee80211_do_open take care of "everything"
 126                          * mentioned in the comment above.
 127                          */
 128                         sdata->u.mntr.flags = *flags;
 129                 }
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 136                                       struct wireless_dev *wdev)
 137 {
 138         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 139         int ret;
 140
 141         mutex_lock(&sdata->local->chanctx_mtx);
 142         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 143         mutex_unlock(&sdata->local->chanctx_mtx);
 144         if (ret < 0)
 145                 return ret;
 146
 147         return ieee80211_do_open(wdev, true);
 148 }
 149
 150 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 151                                       struct wireless_dev *wdev)
 152 {
 153         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 154 }
 155
 156 static int ieee80211_start_nan(struct wiphy *wiphy,
 157                                struct wireless_dev *wdev,
 158                                struct cfg80211_nan_conf *conf)
 159 {
 160         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 161         int ret;
 162
 163         mutex_lock(&sdata->local->chanctx_mtx);
 164         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 165         mutex_unlock(&sdata->local->chanctx_mtx);
 166         if (ret < 0)
 167                 return ret;
 168
 169         ret = ieee80211_do_open(wdev, true);
 170         if (ret)
 171                 return ret;
 172
 173         ret = drv_start_nan(sdata->local, sdata, conf);
 174         if (ret)
 175                 ieee80211_sdata_stop(sdata);
 176
 177         sdata->u.nan.conf = *conf;
 178
 179         return ret;
 180 }
 181
 182 static void ieee80211_stop_nan(struct wiphy *wiphy,
 183                                struct wireless_dev *wdev)
 184 {
 185         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 186
 187         drv_stop_nan(sdata->local, sdata);
 188         ieee80211_sdata_stop(sdata);
 189 }
 190
 191 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 192                                      struct wireless_dev *wdev,
 193                                      struct cfg80211_nan_conf *conf,
 194                                      u32 changes)
 195 {
 196         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 197         struct cfg80211_nan_conf new_conf;
 198         int ret = 0;
 199
 200         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 201                 return -EOPNOTSUPP;
 202
 203         if (!ieee80211_sdata_running(sdata))
 204                 return -ENETDOWN;
 205
 206         new_conf = sdata->u.nan.conf;
 207
 208         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 209                 new_conf.master_pref = conf->master_pref;
 210
 211         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 212                 new_conf.bands = conf->bands;
 213
 214         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 215         if (!ret)
 216                 sdata->u.nan.conf = new_conf;
 217
 218         return ret;
 219 }
 220
 221 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 222                                   struct wireless_dev *wdev,
 223                                   struct cfg80211_nan_func *nan_func)
 224 {
 225         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 226         int ret;
 227
 228         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 229                 return -EOPNOTSUPP;
 230
 231         if (!ieee80211_sdata_running(sdata))
 232                 return -ENETDOWN;
 233
 234         spin_lock_bh(&sdata->u.nan.func_lock);
 235
 236         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 237                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 238                         GFP_ATOMIC);
 239         spin_unlock_bh(&sdata->u.nan.func_lock);
 240
 241         if (ret < 0)
 242                 return ret;
 243
 244         nan_func->instance_id = ret;
 245
 246         WARN_ON(nan_func->instance_id == 0);
 247
 248         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 249         if (ret) {
 250                 spin_lock_bh(&sdata->u.nan.func_lock);
 251                 idr_remove(&sdata->u.nan.function_inst_ids,
 252                            nan_func->instance_id);
 253                 spin_unlock_bh(&sdata->u.nan.func_lock);
 254         }
 255
 256         return ret;
 257 }
 258
 259 static struct cfg80211_nan_func *
 260 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 261                                   u64 cookie)
 262 {
 263         struct cfg80211_nan_func *func;
 264         int id;
 265
 266         lockdep_assert_held(&sdata->u.nan.func_lock);
 267
 268         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 269                 if (func->cookie == cookie)
 270                         return func;
 271         }
 272
 273         return NULL;
 274 }
 275
 276 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 277                                   struct wireless_dev *wdev, u64 cookie)
 278 {
 279         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 280         struct cfg80211_nan_func *func;
 281         u8 instance_id = 0;
 282
 283         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 284             !ieee80211_sdata_running(sdata))
 285                 return;
 286
 287         spin_lock_bh(&sdata->u.nan.func_lock);
 288
 289         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 290         if (func)
 291                 instance_id = func->instance_id;
 292
 293         spin_unlock_bh(&sdata->u.nan.func_lock);
 294
 295         if (instance_id)
 296                 drv_del_nan_func(sdata->local, sdata, instance_id);
 297 }
 298
 299 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 300                                   struct net_device *dev,
 301                                   u16 noack_map)
 302 {
 303         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 304
 305         sdata->noack_map = noack_map;
 306
 307         ieee80211_check_fast_xmit_iface(sdata);
 308
 309         return 0;
 310 }
 311
 312 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 313                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 314                              struct key_params *params)
 315 {
 316         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317         struct ieee80211_local *local = sdata->local;
 318         struct sta_info *sta = NULL;
 319         const struct ieee80211_cipher_scheme *cs = NULL;
 320         struct ieee80211_key *key;
 321         int err;
 322
 323         if (!ieee80211_sdata_running(sdata))
 324                 return -ENETDOWN;
 325
 326         /* reject WEP and TKIP keys if WEP failed to initialize */
 327         switch (params->cipher) {
 328         case WLAN_CIPHER_SUITE_WEP40:
 329         case WLAN_CIPHER_SUITE_TKIP:
 330         case WLAN_CIPHER_SUITE_WEP104:
 331                 if (IS_ERR(local->wep_tx_tfm))
 332                         return -EINVAL;
 333                 break;
 334         case WLAN_CIPHER_SUITE_CCMP:
 335         case WLAN_CIPHER_SUITE_CCMP_256:
 336         case WLAN_CIPHER_SUITE_AES_CMAC:
 337         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 338         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 339         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 340         case WLAN_CIPHER_SUITE_GCMP:
 341         case WLAN_CIPHER_SUITE_GCMP_256:
 342                 break;
 343         default:
 344                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 345                 break;
 346         }
 347
 348         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 349                                   params->key, params->seq_len, params->seq,
 350                                   cs);
 351         if (IS_ERR(key))
 352                 return PTR_ERR(key);
 353
 354         if (pairwise)
 355                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 356
 357         mutex_lock(&local->sta_mtx);
 358
 359         if (mac_addr) {
 360                 sta = sta_info_get_bss(sdata, mac_addr);
 361                 /*
 362                  * The ASSOC test makes sure the driver is ready to
 363                  * receive the key. When wpa_supplicant has roamed
 364                  * using FT, it attempts to set the key before
 365                  * association has completed, this rejects that attempt
 366                  * so it will set the key again after association.
 367                  *
 368                  * TODO: accept the key if we have a station entry and
 369                  *       add it to the device after the station.
 370                  */
 371                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 372                         ieee80211_key_free_unused(key);
 373                         err = -ENOENT;
 374                         goto out_unlock;
 375                 }
 376         }
 377
 378         switch (sdata->vif.type) {
 379         case NL80211_IFTYPE_STATION:
 380                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 381                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 382                 break;
 383         case NL80211_IFTYPE_AP:
 384         case NL80211_IFTYPE_AP_VLAN:
 385                 /* Keys without a station are used for TX only */
 386                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 387                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 388                 break;
 389         case NL80211_IFTYPE_ADHOC:
 390                 /* no MFP (yet) */
 391                 break;
 392         case NL80211_IFTYPE_MESH_POINT:
 393 #ifdef CONFIG_MAC80211_MESH
 394                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 395                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 396                 break;
 397 #endif
 398         case NL80211_IFTYPE_WDS:
 399         case NL80211_IFTYPE_MONITOR:
 400         case NL80211_IFTYPE_P2P_DEVICE:
 401         case NL80211_IFTYPE_NAN:
 402         case NL80211_IFTYPE_UNSPECIFIED:
 403         case NUM_NL80211_IFTYPES:
 404         case NL80211_IFTYPE_P2P_CLIENT:
 405         case NL80211_IFTYPE_P2P_GO:
 406         case NL80211_IFTYPE_OCB:
 407                 /* shouldn't happen */
 408                 WARN_ON_ONCE(1);
 409                 break;
 410         }
 411
 412         if (sta)
 413                 sta->cipher_scheme = cs;
 414
 415         err = ieee80211_key_link(key, sdata, sta);
 416
 417  out_unlock:
 418         mutex_unlock(&local->sta_mtx);
 419
 420         return err;
 421 }
 422
 423 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 424                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 425 {
 426         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 427         struct ieee80211_local *local = sdata->local;
 428         struct sta_info *sta;
 429         struct ieee80211_key *key = NULL;
 430         int ret;
 431
 432         mutex_lock(&local->sta_mtx);
 433         mutex_lock(&local->key_mtx);
 434
 435         if (mac_addr) {
 436                 ret = -ENOENT;
 437
 438                 sta = sta_info_get_bss(sdata, mac_addr);
 439                 if (!sta)
 440                         goto out_unlock;
 441
 442                 if (pairwise)
 443                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 444                 else
 445                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 446         } else
 447                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 448
 449         if (!key) {
 450                 ret = -ENOENT;
 451                 goto out_unlock;
 452         }
 453
 454         ieee80211_key_free(key, true);
 455
 456         ret = 0;
 457  out_unlock:
 458         mutex_unlock(&local->key_mtx);
 459         mutex_unlock(&local->sta_mtx);
 460
 461         return ret;
 462 }
 463
 464 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 465                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 466                              void *cookie,
 467                              void (*callback)(void *cookie,
 468                                               struct key_params *params))
 469 {
 470         struct ieee80211_sub_if_data *sdata;
 471         struct sta_info *sta = NULL;
 472         u8 seq[6] = {0};
 473         struct key_params params;
 474         struct ieee80211_key *key = NULL;
 475         u64 pn64;
 476         u32 iv32;
 477         u16 iv16;
 478         int err = -ENOENT;
 479         struct ieee80211_key_seq kseq = {};
 480
 481         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 482
 483         rcu_read_lock();
 484
 485         if (mac_addr) {
 486                 sta = sta_info_get_bss(sdata, mac_addr);
 487                 if (!sta)
 488                         goto out;
 489
 490                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 491                         key = rcu_dereference(sta->ptk[key_idx]);
 492                 else if (!pairwise &&
 493                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 494                         key = rcu_dereference(sta->gtk[key_idx]);
 495         } else
 496                 key = rcu_dereference(sdata->keys[key_idx]);
 497
 498         if (!key)
 499                 goto out;
 500
 501         memset(&params, 0, sizeof(params));
 502
 503         params.cipher = key->conf.cipher;
 504
 505         switch (key->conf.cipher) {
 506         case WLAN_CIPHER_SUITE_TKIP:
 507                 pn64 = atomic64_read(&key->conf.tx_pn);
 508                 iv32 = TKIP_PN_TO_IV32(pn64);
 509                 iv16 = TKIP_PN_TO_IV16(pn64);
 510
 511                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 512                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 513                         drv_get_key_seq(sdata->local, key, &kseq);
 514                         iv32 = kseq.tkip.iv32;
 515                         iv16 = kseq.tkip.iv16;
 516                 }
 517
 518                 seq[0] = iv16 & 0xff;
 519                 seq[1] = (iv16 >> 8) & 0xff;
 520                 seq[2] = iv32 & 0xff;
 521                 seq[3] = (iv32 >> 8) & 0xff;
 522                 seq[4] = (iv32 >> 16) & 0xff;
 523                 seq[5] = (iv32 >> 24) & 0xff;
 524                 params.seq = seq;
 525                 params.seq_len = 6;
 526                 break;
 527         case WLAN_CIPHER_SUITE_CCMP:
 528         case WLAN_CIPHER_SUITE_CCMP_256:
 529         case WLAN_CIPHER_SUITE_AES_CMAC:
 530         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 531                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 532                              offsetof(typeof(kseq), aes_cmac));
 533         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 534         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 535                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 536                              offsetof(typeof(kseq), aes_gmac));
 537         case WLAN_CIPHER_SUITE_GCMP:
 538         case WLAN_CIPHER_SUITE_GCMP_256:
 539                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 540                              offsetof(typeof(kseq), gcmp));
 541
 542                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 543                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 544                         drv_get_key_seq(sdata->local, key, &kseq);
 545                         memcpy(seq, kseq.ccmp.pn, 6);
 546                 } else {
 547                         pn64 = atomic64_read(&key->conf.tx_pn);
 548                         seq[0] = pn64;
 549                         seq[1] = pn64 >> 8;
 550                         seq[2] = pn64 >> 16;
 551                         seq[3] = pn64 >> 24;
 552                         seq[4] = pn64 >> 32;
 553                         seq[5] = pn64 >> 40;
 554                 }
 555                 params.seq = seq;
 556                 params.seq_len = 6;
 557                 break;
 558         default:
 559                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 560                         break;
 561                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 562                         break;
 563                 drv_get_key_seq(sdata->local, key, &kseq);
 564                 params.seq = kseq.hw.seq;
 565                 params.seq_len = kseq.hw.seq_len;
 566                 break;
 567         }
 568
 569         params.key = key->conf.key;
 570         params.key_len = key->conf.keylen;
 571
 572         callback(cookie, &params);
 573         err = 0;
 574
 575  out:
 576         rcu_read_unlock();
 577         return err;
 578 }
 579
 580 static int ieee80211_config_default_key(struct wiphy *wiphy,
 581                                         struct net_device *dev,
 582                                         u8 key_idx, bool uni,
 583                                         bool multi)
 584 {
 585         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 586
 587         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 588
 589         return 0;
 590 }
 591
 592 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 593                                              struct net_device *dev,
 594                                              u8 key_idx)
 595 {
 596         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 597
 598         ieee80211_set_default_mgmt_key(sdata, key_idx);
 599
 600         return 0;
 601 }
 602
 603 void sta_set_rate_info_tx(struct sta_info *sta,
 604                           const struct ieee80211_tx_rate *rate,
 605                           struct rate_info *rinfo)
 606 {
 607         rinfo->flags = 0;
 608         if (rate->flags & IEEE80211_TX_RC_MCS) {
 609                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 610                 rinfo->mcs = rate->idx;
 611         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 612                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 613                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 614                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 615         } else {
 616                 struct ieee80211_supported_band *sband;
 617                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 618                 u16 brate;
 619
 620                 sband = sta->local->hw.wiphy->bands[
 621                                 ieee80211_get_sdata_band(sta->sdata)];
 622                 brate = sband->bitrates[rate->idx].bitrate;
 623                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 624         }
 625         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 626                 rinfo->bw = RATE_INFO_BW_40;
 627         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 628                 rinfo->bw = RATE_INFO_BW_80;
 629         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 630                 rinfo->bw = RATE_INFO_BW_160;
 631         else
 632                 rinfo->bw = RATE_INFO_BW_20;
 633         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 634                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 635 }
 636
 637 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 638                                   int idx, u8 *mac, struct station_info *sinfo)
 639 {
 640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 641         struct ieee80211_local *local = sdata->local;
 642         struct sta_info *sta;
 643         int ret = -ENOENT;
 644
 645         mutex_lock(&local->sta_mtx);
 646
 647         sta = sta_info_get_by_idx(sdata, idx);
 648         if (sta) {
 649                 ret = 0;
 650                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 651                 sta_set_sinfo(sta, sinfo);
 652         }
 653
 654         mutex_unlock(&local->sta_mtx);
 655
 656         return ret;
 657 }
 658
 659 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 660                                  int idx, struct survey_info *survey)
 661 {
 662         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 663
 664         return drv_get_survey(local, idx, survey);
 665 }
 666
 667 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 668                                  const u8 *mac, struct station_info *sinfo)
 669 {
 670         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 671         struct ieee80211_local *local = sdata->local;
 672         struct sta_info *sta;
 673         int ret = -ENOENT;
 674
 675         mutex_lock(&local->sta_mtx);
 676
 677         sta = sta_info_get_bss(sdata, mac);
 678         if (sta) {
 679                 ret = 0;
 680                 sta_set_sinfo(sta, sinfo);
 681         }
 682
 683         mutex_unlock(&local->sta_mtx);
 684
 685         return ret;
 686 }
 687
 688 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 689                                          struct cfg80211_chan_def *chandef)
 690 {
 691         struct ieee80211_local *local = wiphy_priv(wiphy);
 692         struct ieee80211_sub_if_data *sdata;
 693         int ret = 0;
 694
 695         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 696                 return 0;
 697
 698         mutex_lock(&local->mtx);
 699         mutex_lock(&local->iflist_mtx);
 700         if (local->use_chanctx) {
 701                 sdata = rcu_dereference_protected(
 702                                 local->monitor_sdata,
 703                                 lockdep_is_held(&local->iflist_mtx));
 704                 if (sdata) {
 705                         ieee80211_vif_release_channel(sdata);
 706                         ret = ieee80211_vif_use_channel(sdata, chandef,
 707                                         IEEE80211_CHANCTX_EXCLUSIVE);
 708                 }
 709         } else if (local->open_count == local->monitors) {
 710                 local->_oper_chandef = *chandef;
 711                 ieee80211_hw_config(local, 0);
 712         }
 713
 714         if (ret == 0)
 715                 local->monitor_chandef = *chandef;
 716         mutex_unlock(&local->iflist_mtx);
 717         mutex_unlock(&local->mtx);
 718
 719         return ret;
 720 }
 721
 722 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 723                                     const u8 *resp, size_t resp_len,
 724                                     const struct ieee80211_csa_settings *csa)
 725 {
 726         struct probe_resp *new, *old;
 727
 728         if (!resp || !resp_len)
 729                 return 1;
 730
 731         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 732
 733         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 734         if (!new)
 735                 return -ENOMEM;
 736
 737         new->len = resp_len;
 738         memcpy(new->data, resp, resp_len);
 739
 740         if (csa)
 741                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 742                        csa->n_counter_offsets_presp *
 743                        sizeof(new->csa_counter_offsets[0]));
 744
 745         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 746         if (old)
 747                 kfree_rcu(old, rcu_head);
 748
 749         return 0;
 750 }
 751
 752 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 753                                    struct cfg80211_beacon_data *params,
 754                                    const struct ieee80211_csa_settings *csa)
 755 {
 756         struct beacon_data *new, *old;
 757         int new_head_len, new_tail_len;
 758         int size, err;
 759         u32 changed = BSS_CHANGED_BEACON;
 760
 761         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 762
 763
 764         /* Need to have a beacon head if we don't have one yet */
 765         if (!params->head && !old)
 766                 return -EINVAL;
 767
 768         /* new or old head? */
 769         if (params->head)
 770                 new_head_len = params->head_len;
 771         else
 772                 new_head_len = old->head_len;
 773
 774         /* new or old tail? */
 775         if (params->tail || !old)
 776                 /* params->tail_len will be zero for !params->tail */
 777                 new_tail_len = params->tail_len;
 778         else
 779                 new_tail_len = old->tail_len;
 780
 781         size = sizeof(*new) + new_head_len + new_tail_len;
 782
 783         new = kzalloc(size, GFP_KERNEL);
 784         if (!new)
 785                 return -ENOMEM;
 786
 787         /* start filling the new info now */
 788
 789         /*
 790          * pointers go into the block we allocated,
 791          * memory is | beacon_data | head | tail |
 792          */
 793         new->head = ((u8 *) new) + sizeof(*new);
 794         new->tail = new->head + new_head_len;
 795         new->head_len = new_head_len;
 796         new->tail_len = new_tail_len;
 797
 798         if (csa) {
 799                 new->csa_current_counter = csa->count;
 800                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 801                        csa->n_counter_offsets_beacon *
 802                        sizeof(new->csa_counter_offsets[0]));
 803         }
 804
 805         /* copy in head */
 806         if (params->head)
 807                 memcpy(new->head, params->head, new_head_len);
 808         else
 809                 memcpy(new->head, old->head, new_head_len);
 810
 811         /* copy in optional tail */
 812         if (params->tail)
 813                 memcpy(new->tail, params->tail, new_tail_len);
 814         else
 815                 if (old)
 816                         memcpy(new->tail, old->tail, new_tail_len);
 817
 818         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 819                                        params->probe_resp_len, csa);
 820         if (err < 0)
 821                 return err;
 822         if (err == 0)
 823                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 824
 825         rcu_assign_pointer(sdata->u.ap.beacon, new);
 826
 827         if (old)
 828                 kfree_rcu(old, rcu_head);
 829
 830         return changed;
 831 }
 832
 833 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 834                               struct cfg80211_ap_settings *params)
 835 {
 836         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 837         struct ieee80211_local *local = sdata->local;
 838         struct beacon_data *old;
 839         struct ieee80211_sub_if_data *vlan;
 840         u32 changed = BSS_CHANGED_BEACON_INT |
 841                       BSS_CHANGED_BEACON_ENABLED |
 842                       BSS_CHANGED_BEACON |
 843                       BSS_CHANGED_SSID |
 844                       BSS_CHANGED_P2P_PS |
 845                       BSS_CHANGED_TXPOWER;
 846         int err;
 847
 848         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 849         if (old)
 850                 return -EALREADY;
 851
 852         switch (params->smps_mode) {
 853         case NL80211_SMPS_OFF:
 854                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 855                 break;
 856         case NL80211_SMPS_STATIC:
 857                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 858                 break;
 859         case NL80211_SMPS_DYNAMIC:
 860                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 861                 break;
 862         default:
 863                 return -EINVAL;
 864         }
 865         sdata->needed_rx_chains = sdata->local->rx_chains;
 866
 867         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 868
 869         mutex_lock(&local->mtx);
 870         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 871                                         IEEE80211_CHANCTX_SHARED);
 872         if (!err)
 873                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 874         mutex_unlock(&local->mtx);
 875         if (err)
 876                 return err;
 877
 878         /*
 879          * Apply control port protocol, this allows us to
 880          * not encrypt dynamic WEP control frames.
 881          */
 882         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 883         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 884         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 885                                                         &params->crypto,
 886                                                         sdata->vif.type);
 887
 888         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 889                 vlan->control_port_protocol =
 890                         params->crypto.control_port_ethertype;
 891                 vlan->control_port_no_encrypt =
 892                         params->crypto.control_port_no_encrypt;
 893                 vlan->encrypt_headroom =
 894                         ieee80211_cs_headroom(sdata->local,
 895                                               &params->crypto,
 896                                               vlan->vif.type);
 897         }
 898
 899         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 900         sdata->vif.bss_conf.enable_beacon = true;
 901         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 902
 903         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 904         if (params->ssid_len)
 905                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 906                        params->ssid_len);
 907         sdata->vif.bss_conf.hidden_ssid =
 908                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 909
 910         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 911                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 912         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 913                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 914         if (params->p2p_opp_ps)
 915                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 916                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 917
 918         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 919         if (err < 0) {
 920                 ieee80211_vif_release_channel(sdata);
 921                 return err;
 922         }
 923         changed |= err;
 924
 925         err = drv_start_ap(sdata->local, sdata);
 926         if (err) {
 927                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 928
 929                 if (old)
 930                         kfree_rcu(old, rcu_head);
 931                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 932                 ieee80211_vif_release_channel(sdata);
 933                 return err;
 934         }
 935
 936         ieee80211_recalc_dtim(local, sdata);
 937         ieee80211_bss_info_change_notify(sdata, changed);
 938
 939         netif_carrier_on(dev);
 940         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 941                 netif_carrier_on(vlan->dev);
 942
 943         return 0;
 944 }
 945
 946 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 947                                    struct cfg80211_beacon_data *params)
 948 {
 949         struct ieee80211_sub_if_data *sdata;
 950         struct beacon_data *old;
 951         int err;
 952
 953         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 954         sdata_assert_lock(sdata);
 955
 956         /* don't allow changing the beacon while CSA is in place - offset
 957          * of channel switch counter may change
 958          */
 959         if (sdata->vif.csa_active)
 960                 return -EBUSY;
 961
 962         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 963         if (!old)
 964                 return -ENOENT;
 965
 966         err = ieee80211_assign_beacon(sdata, params, NULL);
 967         if (err < 0)
 968                 return err;
 969         ieee80211_bss_info_change_notify(sdata, err);
 970         return 0;
 971 }
 972
 973 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 974 {
 975         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 976         struct ieee80211_sub_if_data *vlan;
 977         struct ieee80211_local *local = sdata->local;
 978         struct beacon_data *old_beacon;
 979         struct probe_resp *old_probe_resp;
 980         struct cfg80211_chan_def chandef;
 981
 982         sdata_assert_lock(sdata);
 983
 984         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 985         if (!old_beacon)
 986                 return -ENOENT;
 987         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 988
 989         /* abort any running channel switch */
 990         mutex_lock(&local->mtx);
 991         sdata->vif.csa_active = false;
 992         if (sdata->csa_block_tx) {
 993                 ieee80211_wake_vif_queues(local, sdata,
 994                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 995                 sdata->csa_block_tx = false;
 996         }
 997
 998         mutex_unlock(&local->mtx);
 999
1000         kfree(sdata->u.ap.next_beacon);
1001         sdata->u.ap.next_beacon = NULL;
1002
1003         /* turn off carrier for this interface and dependent VLANs */
1004         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1005                 netif_carrier_off(vlan->dev);
1006         netif_carrier_off(dev);
1007
1008         /* remove beacon and probe response */
1009         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1010         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1011         kfree_rcu(old_beacon, rcu_head);
1012         if (old_probe_resp)
1013                 kfree_rcu(old_probe_resp, rcu_head);
1014         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1015
1016         __sta_info_flush(sdata, true);
1017         ieee80211_free_keys(sdata, true);
1018
1019         sdata->vif.bss_conf.enable_beacon = false;
1020         sdata->vif.bss_conf.ssid_len = 0;
1021         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1022         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1023
1024         if (sdata->wdev.cac_started) {
1025                 chandef = sdata->vif.bss_conf.chandef;
1026                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1027                 cfg80211_cac_event(sdata->dev, &chandef,
1028                                    NL80211_RADAR_CAC_ABORTED,
1029                                    GFP_KERNEL);
1030         }
1031
1032         drv_stop_ap(sdata->local, sdata);
1033
1034         /* free all potentially still buffered bcast frames */
1035         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1036         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1037
1038         mutex_lock(&local->mtx);
1039         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1040         ieee80211_vif_release_channel(sdata);
1041         mutex_unlock(&local->mtx);
1042
1043         return 0;
1044 }
1045
1046 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1047 struct iapp_layer2_update {
1048         u8 da[ETH_ALEN];        /* broadcast */
1049         u8 sa[ETH_ALEN];        /* STA addr */
1050         __be16 len;             /* 6 */
1051         u8 dsap;                /* 0 */
1052         u8 ssap;                /* 0 */
1053         u8 control;
1054         u8 xid_info[3];
1055 } __packed;
1056
1057 static void ieee80211_send_layer2_update(struct sta_info *sta)
1058 {
1059         struct iapp_layer2_update *msg;
1060         struct sk_buff *skb;
1061
1062         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1063          * bridge devices */
1064
1065         skb = dev_alloc_skb(sizeof(*msg));
1066         if (!skb)
1067                 return;
1068         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1069
1070         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1071          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1072
1073         eth_broadcast_addr(msg->da);
1074         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1075         msg->len = htons(6);
1076         msg->dsap = 0;
1077         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1078         msg->control = 0xaf;    /* XID response lsb.1111F101.
1079                                  * F=0 (no poll command; unsolicited frame) */
1080         msg->xid_info[0] = 0x81;        /* XID format identifier */
1081         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1082         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1083
1084         skb->dev = sta->sdata->dev;
1085         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1086         memset(skb->cb, 0, sizeof(skb->cb));
1087         netif_rx_ni(skb);
1088 }
1089
1090 static int sta_apply_auth_flags(struct ieee80211_local *local,
1091                                 struct sta_info *sta,
1092                                 u32 mask, u32 set)
1093 {
1094         int ret;
1095
1096         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1097             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1098             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1099                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1100                 if (ret)
1101                         return ret;
1102         }
1103
1104         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1105             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1106             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1107                 /*
1108                  * When peer becomes associated, init rate control as
1109                  * well. Some drivers require rate control initialized
1110                  * before drv_sta_state() is called.
1111                  */
1112                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1113                         rate_control_rate_init(sta);
1114
1115                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1116                 if (ret)
1117                         return ret;
1118         }
1119
1120         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1121                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1122                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1123                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1124                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1125                 else
1126                         ret = 0;
1127                 if (ret)
1128                         return ret;
1129         }
1130
1131         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1132             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1133             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1134                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1135                 if (ret)
1136                         return ret;
1137         }
1138
1139         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1140             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1141             test_sta_flag(sta, WLAN_STA_AUTH)) {
1142                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1143                 if (ret)
1144                         return ret;
1145         }
1146
1147         return 0;
1148 }
1149
1150 static void sta_apply_mesh_params(struct ieee80211_local *local,
1151                                   struct sta_info *sta,
1152                                   struct station_parameters *params)
1153 {
1154 #ifdef CONFIG_MAC80211_MESH
1155         struct ieee80211_sub_if_data *sdata = sta->sdata;
1156         u32 changed = 0;
1157
1158         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1159                 switch (params->plink_state) {
1160                 case NL80211_PLINK_ESTAB:
1161                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1162                                 changed = mesh_plink_inc_estab_count(sdata);
1163                         sta->mesh->plink_state = params->plink_state;
1164                         sta->mesh->aid = params->peer_aid;
1165
1166                         ieee80211_mps_sta_status_update(sta);
1167                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1168                                       sdata->u.mesh.mshcfg.power_mode);
1169                         break;
1170                 case NL80211_PLINK_LISTEN:
1171                 case NL80211_PLINK_BLOCKED:
1172                 case NL80211_PLINK_OPN_SNT:
1173                 case NL80211_PLINK_OPN_RCVD:
1174                 case NL80211_PLINK_CNF_RCVD:
1175                 case NL80211_PLINK_HOLDING:
1176                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1177                                 changed = mesh_plink_dec_estab_count(sdata);
1178                         sta->mesh->plink_state = params->plink_state;
1179
1180                         ieee80211_mps_sta_status_update(sta);
1181                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1182                                         NL80211_MESH_POWER_UNKNOWN);
1183                         break;
1184                 default:
1185                         /*  nothing  */
1186                         break;
1187                 }
1188         }
1189
1190         switch (params->plink_action) {
1191         case NL80211_PLINK_ACTION_NO_ACTION:
1192                 /* nothing */
1193                 break;
1194         case NL80211_PLINK_ACTION_OPEN:
1195                 changed |= mesh_plink_open(sta);
1196                 break;
1197         case NL80211_PLINK_ACTION_BLOCK:
1198                 changed |= mesh_plink_block(sta);
1199                 break;
1200         }
1201
1202         if (params->local_pm)
1203                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1204                                                           params->local_pm);
1205
1206         ieee80211_mbss_info_change_notify(sdata, changed);
1207 #endif
1208 }
1209
1210 static int sta_apply_parameters(struct ieee80211_local *local,
1211                                 struct sta_info *sta,
1212                                 struct station_parameters *params)
1213 {
1214         int ret = 0;
1215         struct ieee80211_supported_band *sband;
1216         struct ieee80211_sub_if_data *sdata = sta->sdata;
1217         enum nl80211_band band = ieee80211_get_sdata_band(sdata);
1218         u32 mask, set;
1219
1220         sband = local->hw.wiphy->bands[band];
1221
1222         mask = params->sta_flags_mask;
1223         set = params->sta_flags_set;
1224
1225         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1226                 /*
1227                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1228                  * API but must follow AUTHENTICATED for driver state.
1229                  */
1230                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1231                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1232                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1233                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1234         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1235                 /*
1236                  * TDLS -- everything follows authorized, but
1237                  * only becoming authorized is possible, not
1238                  * going back
1239                  */
1240                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1241                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1242                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1243                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1244                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1245                 }
1246         }
1247
1248         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1249             local->hw.queues >= IEEE80211_NUM_ACS)
1250                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1251
1252         /* auth flags will be set later for TDLS,
1253          * and for unassociated stations that move to assocaited */
1254         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1255             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1256               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1257                 ret = sta_apply_auth_flags(local, sta, mask, set);
1258                 if (ret)
1259                         return ret;
1260         }
1261
1262         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1263                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1264                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1265                 else
1266                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1267         }
1268
1269         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1270                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1271                 if (set & BIT(NL80211_STA_FLAG_MFP))
1272                         set_sta_flag(sta, WLAN_STA_MFP);
1273                 else
1274                         clear_sta_flag(sta, WLAN_STA_MFP);
1275         }
1276
1277         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1278                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1279                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1280                 else
1281                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1282         }
1283
1284         /* mark TDLS channel switch support, if the AP allows it */
1285         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1286             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1287             params->ext_capab_len >= 4 &&
1288             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1289                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1290
1291         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1292             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1293             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1294             params->ext_capab_len >= 8 &&
1295             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1296                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1297
1298         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1299                 sta->sta.uapsd_queues = params->uapsd_queues;
1300                 sta->sta.max_sp = params->max_sp;
1301         }
1302
1303         /* The sender might not have sent the last bit, consider it to be 0 */
1304         if (params->ext_capab_len >= 8) {
1305                 u8 val = (params->ext_capab[7] &
1306                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1307
1308                 /* we did get all the bits, take the MSB as well */
1309                 if (params->ext_capab_len >= 9) {
1310                         u8 val_msb = params->ext_capab[8] &
1311                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1312                         val_msb <<= 1;
1313                         val |= val_msb;
1314                 }
1315
1316                 switch (val) {
1317                 case 1:
1318                         sta->sta.max_amsdu_subframes = 32;
1319                         break;
1320                 case 2:
1321                         sta->sta.max_amsdu_subframes = 16;
1322                         break;
1323                 case 3:
1324                         sta->sta.max_amsdu_subframes = 8;
1325                         break;
1326                 default:
1327                         sta->sta.max_amsdu_subframes = 0;
1328                 }
1329         }
1330
1331         /*
1332          * cfg80211 validates this (1-2007) and allows setting the AID
1333          * only when creating a new station entry
1334          */
1335         if (params->aid)
1336                 sta->sta.aid = params->aid;
1337
1338         /*
1339          * Some of the following updates would be racy if called on an
1340          * existing station, via ieee80211_change_station(). However,
1341          * all such changes are rejected by cfg80211 except for updates
1342          * changing the supported rates on an existing but not yet used
1343          * TDLS peer.
1344          */
1345
1346         if (params->listen_interval >= 0)
1347                 sta->listen_interval = params->listen_interval;
1348
1349         if (params->supported_rates) {
1350                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1351                                          sband, params->supported_rates,
1352                                          params->supported_rates_len,
1353                                          &sta->sta.supp_rates[band]);
1354         }
1355
1356         if (params->ht_capa)
1357                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1358                                                   params->ht_capa, sta);
1359
1360         /* VHT can override some HT caps such as the A-MSDU max length */
1361         if (params->vht_capa)
1362                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1363                                                     params->vht_capa, sta);
1364
1365         if (params->opmode_notif_used) {
1366                 /* returned value is only needed for rc update, but the
1367                  * rc isn't initialized here yet, so ignore it
1368                  */
1369                 __ieee80211_vht_handle_opmode(sdata, sta,
1370                                               params->opmode_notif, band);
1371         }
1372
1373         if (params->support_p2p_ps >= 0)
1374                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1375
1376         if (ieee80211_vif_is_mesh(&sdata->vif))
1377                 sta_apply_mesh_params(local, sta, params);
1378
1379         /* set the STA state after all sta info from usermode has been set */
1380         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1381             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1382                 ret = sta_apply_auth_flags(local, sta, mask, set);
1383                 if (ret)
1384                         return ret;
1385         }
1386
1387         return 0;
1388 }
1389
1390 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1391                                  const u8 *mac,
1392                                  struct station_parameters *params)
1393 {
1394         struct ieee80211_local *local = wiphy_priv(wiphy);
1395         struct sta_info *sta;
1396         struct ieee80211_sub_if_data *sdata;
1397         int err;
1398         int layer2_update;
1399
1400         if (params->vlan) {
1401                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1402
1403                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1404                     sdata->vif.type != NL80211_IFTYPE_AP)
1405                         return -EINVAL;
1406         } else
1407                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1408
1409         if (ether_addr_equal(mac, sdata->vif.addr))
1410                 return -EINVAL;
1411
1412         if (is_multicast_ether_addr(mac))
1413                 return -EINVAL;
1414
1415         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1416         if (!sta)
1417                 return -ENOMEM;
1418
1419         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1420                 sta->sta.tdls = true;
1421
1422         err = sta_apply_parameters(local, sta, params);
1423         if (err) {
1424                 sta_info_free(local, sta);
1425                 return err;
1426         }
1427
1428         /*
1429          * for TDLS and for unassociated station, rate control should be
1430          * initialized only when rates are known and station is marked
1431          * authorized/associated
1432          */
1433         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1434             test_sta_flag(sta, WLAN_STA_ASSOC))
1435                 rate_control_rate_init(sta);
1436
1437         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1438                 sdata->vif.type == NL80211_IFTYPE_AP;
1439
1440         err = sta_info_insert_rcu(sta);
1441         if (err) {
1442                 rcu_read_unlock();
1443                 return err;
1444         }
1445
1446         if (layer2_update)
1447                 ieee80211_send_layer2_update(sta);
1448
1449         rcu_read_unlock();
1450
1451         return 0;
1452 }
1453
1454 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1455                                  struct station_del_parameters *params)
1456 {
1457         struct ieee80211_sub_if_data *sdata;
1458
1459         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1460
1461         if (params->mac)
1462                 return sta_info_destroy_addr_bss(sdata, params->mac);
1463
1464         sta_info_flush(sdata);
1465         return 0;
1466 }
1467
1468 static int ieee80211_change_station(struct wiphy *wiphy,
1469                                     struct net_device *dev, const u8 *mac,
1470                                     struct station_parameters *params)
1471 {
1472         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1473         struct ieee80211_local *local = wiphy_priv(wiphy);
1474         struct sta_info *sta;
1475         struct ieee80211_sub_if_data *vlansdata;
1476         enum cfg80211_station_type statype;
1477         int err;
1478
1479         mutex_lock(&local->sta_mtx);
1480
1481         sta = sta_info_get_bss(sdata, mac);
1482         if (!sta) {
1483                 err = -ENOENT;
1484                 goto out_err;
1485         }
1486
1487         switch (sdata->vif.type) {
1488         case NL80211_IFTYPE_MESH_POINT:
1489                 if (sdata->u.mesh.user_mpm)
1490                         statype = CFG80211_STA_MESH_PEER_USER;
1491                 else
1492                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1493                 break;
1494         case NL80211_IFTYPE_ADHOC:
1495                 statype = CFG80211_STA_IBSS;
1496                 break;
1497         case NL80211_IFTYPE_STATION:
1498                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1499                         statype = CFG80211_STA_AP_STA;
1500                         break;
1501                 }
1502                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1503                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1504                 else
1505                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1506                 break;
1507         case NL80211_IFTYPE_AP:
1508         case NL80211_IFTYPE_AP_VLAN:
1509                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1510                         statype = CFG80211_STA_AP_CLIENT;
1511                 else
1512                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1513                 break;
1514         default:
1515                 err = -EOPNOTSUPP;
1516                 goto out_err;
1517         }
1518
1519         err = cfg80211_check_station_change(wiphy, params, statype);
1520         if (err)
1521                 goto out_err;
1522
1523         if (params->vlan && params->vlan != sta->sdata->dev) {
1524                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1525
1526                 if (params->vlan->ieee80211_ptr->use_4addr) {
1527                         if (vlansdata->u.vlan.sta) {
1528                                 err = -EBUSY;
1529                                 goto out_err;
1530                         }
1531
1532                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1533                         __ieee80211_check_fast_rx_iface(vlansdata);
1534                 }
1535
1536                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1537                     sta->sdata->u.vlan.sta)
1538                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1539
1540                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1541                         ieee80211_vif_dec_num_mcast(sta->sdata);
1542
1543                 sta->sdata = vlansdata;
1544                 ieee80211_check_fast_xmit(sta);
1545
1546                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1547                         ieee80211_vif_inc_num_mcast(sta->sdata);
1548
1549                 ieee80211_send_layer2_update(sta);
1550         }
1551
1552         err = sta_apply_parameters(local, sta, params);
1553         if (err)
1554                 goto out_err;
1555
1556         mutex_unlock(&local->sta_mtx);
1557
1558         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1559              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1560             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1561             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1562             sta_info_tx_streams(sta) != 1) {
1563                 ht_dbg(sta->sdata,
1564                        "%pM just authorized and MIMO capable - update SMPS\n",
1565                        sta->sta.addr);
1566                 ieee80211_send_smps_action(sta->sdata,
1567                         sta->sdata->bss->req_smps,
1568                         sta->sta.addr,
1569                         sta->sdata->vif.bss_conf.bssid);
1570         }
1571
1572         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1573             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1574                 ieee80211_recalc_ps(local);
1575                 ieee80211_recalc_ps_vif(sdata);
1576         }
1577
1578         return 0;
1579 out_err:
1580         mutex_unlock(&local->sta_mtx);
1581         return err;
1582 }
1583
1584 #ifdef CONFIG_MAC80211_MESH
1585 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1586                                const u8 *dst, const u8 *next_hop)
1587 {
1588         struct ieee80211_sub_if_data *sdata;
1589         struct mesh_path *mpath;
1590         struct sta_info *sta;
1591
1592         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1593
1594         rcu_read_lock();
1595         sta = sta_info_get(sdata, next_hop);
1596         if (!sta) {
1597                 rcu_read_unlock();
1598                 return -ENOENT;
1599         }
1600
1601         mpath = mesh_path_add(sdata, dst);
1602         if (IS_ERR(mpath)) {
1603                 rcu_read_unlock();
1604                 return PTR_ERR(mpath);
1605         }
1606
1607         mesh_path_fix_nexthop(mpath, sta);
1608
1609         rcu_read_unlock();
1610         return 0;
1611 }
1612
1613 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1614                                const u8 *dst)
1615 {
1616         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1617
1618         if (dst)
1619                 return mesh_path_del(sdata, dst);
1620
1621         mesh_path_flush_by_iface(sdata);
1622         return 0;
1623 }
1624
1625 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1626                                   const u8 *dst, const u8 *next_hop)
1627 {
1628         struct ieee80211_sub_if_data *sdata;
1629         struct mesh_path *mpath;
1630         struct sta_info *sta;
1631
1632         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634         rcu_read_lock();
1635
1636         sta = sta_info_get(sdata, next_hop);
1637         if (!sta) {
1638                 rcu_read_unlock();
1639                 return -ENOENT;
1640         }
1641
1642         mpath = mesh_path_lookup(sdata, dst);
1643         if (!mpath) {
1644                 rcu_read_unlock();
1645                 return -ENOENT;
1646         }
1647
1648         mesh_path_fix_nexthop(mpath, sta);
1649
1650         rcu_read_unlock();
1651         return 0;
1652 }
1653
1654 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1655                             struct mpath_info *pinfo)
1656 {
1657         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1658
1659         if (next_hop_sta)
1660                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1661         else
1662                 eth_zero_addr(next_hop);
1663
1664         memset(pinfo, 0, sizeof(*pinfo));
1665
1666         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1667
1668         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1669                         MPATH_INFO_SN |
1670                         MPATH_INFO_METRIC |
1671                         MPATH_INFO_EXPTIME |
1672                         MPATH_INFO_DISCOVERY_TIMEOUT |
1673                         MPATH_INFO_DISCOVERY_RETRIES |
1674                         MPATH_INFO_FLAGS;
1675
1676         pinfo->frame_qlen = mpath->frame_queue.qlen;
1677         pinfo->sn = mpath->sn;
1678         pinfo->metric = mpath->metric;
1679         if (time_before(jiffies, mpath->exp_time))
1680                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1681         pinfo->discovery_timeout =
1682                         jiffies_to_msecs(mpath->discovery_timeout);
1683         pinfo->discovery_retries = mpath->discovery_retries;
1684         if (mpath->flags & MESH_PATH_ACTIVE)
1685                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1686         if (mpath->flags & MESH_PATH_RESOLVING)
1687                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1688         if (mpath->flags & MESH_PATH_SN_VALID)
1689                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1690         if (mpath->flags & MESH_PATH_FIXED)
1691                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1692         if (mpath->flags & MESH_PATH_RESOLVED)
1693                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1694 }
1695
1696 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1697                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1698
1699 {
1700         struct ieee80211_sub_if_data *sdata;
1701         struct mesh_path *mpath;
1702
1703         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704
1705         rcu_read_lock();
1706         mpath = mesh_path_lookup(sdata, dst);
1707         if (!mpath) {
1708                 rcu_read_unlock();
1709                 return -ENOENT;
1710         }
1711         memcpy(dst, mpath->dst, ETH_ALEN);
1712         mpath_set_pinfo(mpath, next_hop, pinfo);
1713         rcu_read_unlock();
1714         return 0;
1715 }
1716
1717 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1718                                 int idx, u8 *dst, u8 *next_hop,
1719                                 struct mpath_info *pinfo)
1720 {
1721         struct ieee80211_sub_if_data *sdata;
1722         struct mesh_path *mpath;
1723
1724         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1725
1726         rcu_read_lock();
1727         mpath = mesh_path_lookup_by_idx(sdata, idx);
1728         if (!mpath) {
1729                 rcu_read_unlock();
1730                 return -ENOENT;
1731         }
1732         memcpy(dst, mpath->dst, ETH_ALEN);
1733         mpath_set_pinfo(mpath, next_hop, pinfo);
1734         rcu_read_unlock();
1735         return 0;
1736 }
1737
1738 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1739                           struct mpath_info *pinfo)
1740 {
1741         memset(pinfo, 0, sizeof(*pinfo));
1742         memcpy(mpp, mpath->mpp, ETH_ALEN);
1743
1744         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1745 }
1746
1747 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1748                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1749
1750 {
1751         struct ieee80211_sub_if_data *sdata;
1752         struct mesh_path *mpath;
1753
1754         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1755
1756         rcu_read_lock();
1757         mpath = mpp_path_lookup(sdata, dst);
1758         if (!mpath) {
1759                 rcu_read_unlock();
1760                 return -ENOENT;
1761         }
1762         memcpy(dst, mpath->dst, ETH_ALEN);
1763         mpp_set_pinfo(mpath, mpp, pinfo);
1764         rcu_read_unlock();
1765         return 0;
1766 }
1767
1768 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1769                               int idx, u8 *dst, u8 *mpp,
1770                               struct mpath_info *pinfo)
1771 {
1772         struct ieee80211_sub_if_data *sdata;
1773         struct mesh_path *mpath;
1774
1775         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1776
1777         rcu_read_lock();
1778         mpath = mpp_path_lookup_by_idx(sdata, idx);
1779         if (!mpath) {
1780                 rcu_read_unlock();
1781                 return -ENOENT;
1782         }
1783         memcpy(dst, mpath->dst, ETH_ALEN);
1784         mpp_set_pinfo(mpath, mpp, pinfo);
1785         rcu_read_unlock();
1786         return 0;
1787 }
1788
1789 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1790                                 struct net_device *dev,
1791                                 struct mesh_config *conf)
1792 {
1793         struct ieee80211_sub_if_data *sdata;
1794         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1795
1796         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1797         return 0;
1798 }
1799
1800 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1801 {
1802         return (mask >> (parm-1)) & 0x1;
1803 }
1804
1805 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1806                 const struct mesh_setup *setup)
1807 {
1808         u8 *new_ie;
1809         const u8 *old_ie;
1810         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1811                                         struct ieee80211_sub_if_data, u.mesh);
1812
1813         /* allocate information elements */
1814         new_ie = NULL;
1815         old_ie = ifmsh->ie;
1816
1817         if (setup->ie_len) {
1818                 new_ie = kmemdup(setup->ie, setup->ie_len,
1819                                 GFP_KERNEL);
1820                 if (!new_ie)
1821                         return -ENOMEM;
1822         }
1823         ifmsh->ie_len = setup->ie_len;
1824         ifmsh->ie = new_ie;
1825         kfree(old_ie);
1826
1827         /* now copy the rest of the setup parameters */
1828         ifmsh->mesh_id_len = setup->mesh_id_len;
1829         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1830         ifmsh->mesh_sp_id = setup->sync_method;
1831         ifmsh->mesh_pp_id = setup->path_sel_proto;
1832         ifmsh->mesh_pm_id = setup->path_metric;
1833         ifmsh->user_mpm = setup->user_mpm;
1834         ifmsh->mesh_auth_id = setup->auth_id;
1835         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1836         if (setup->is_authenticated)
1837                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1838         if (setup->is_secure)
1839                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1840
1841         /* mcast rate setting in Mesh Node */
1842         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1843                                                 sizeof(setup->mcast_rate));
1844         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1845
1846         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1847         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1848
1849         return 0;
1850 }
1851
1852 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1853                                         struct net_device *dev, u32 mask,
1854                                         const struct mesh_config *nconf)
1855 {
1856         struct mesh_config *conf;
1857         struct ieee80211_sub_if_data *sdata;
1858         struct ieee80211_if_mesh *ifmsh;
1859
1860         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1861         ifmsh = &sdata->u.mesh;
1862
1863         /* Set the config options which we are interested in setting */
1864         conf = &(sdata->u.mesh.mshcfg);
1865         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1866                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1868                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1870                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1871         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1872                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1873         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1874                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1875         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1876                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1878                 conf->element_ttl = nconf->element_ttl;
1879         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1880                 if (ifmsh->user_mpm)
1881                         return -EBUSY;
1882                 conf->auto_open_plinks = nconf->auto_open_plinks;
1883         }
1884         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1885                 conf->dot11MeshNbrOffsetMaxNeighbor =
1886                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1887         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1888                 conf->dot11MeshHWMPmaxPREQretries =
1889                         nconf->dot11MeshHWMPmaxPREQretries;
1890         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1891                 conf->path_refresh_time = nconf->path_refresh_time;
1892         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1893                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1894         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1895                 conf->dot11MeshHWMPactivePathTimeout =
1896                         nconf->dot11MeshHWMPactivePathTimeout;
1897         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1898                 conf->dot11MeshHWMPpreqMinInterval =
1899                         nconf->dot11MeshHWMPpreqMinInterval;
1900         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1901                 conf->dot11MeshHWMPperrMinInterval =
1902                         nconf->dot11MeshHWMPperrMinInterval;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1904                            mask))
1905                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1906                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1907         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1908                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1909                 ieee80211_mesh_root_setup(ifmsh);
1910         }
1911         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1912                 /* our current gate announcement implementation rides on root
1913                  * announcements, so require this ifmsh to also be a root node
1914                  * */
1915                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1916                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1917                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1918                         ieee80211_mesh_root_setup(ifmsh);
1919                 }
1920                 conf->dot11MeshGateAnnouncementProtocol =
1921                         nconf->dot11MeshGateAnnouncementProtocol;
1922         }
1923         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1924                 conf->dot11MeshHWMPRannInterval =
1925                         nconf->dot11MeshHWMPRannInterval;
1926         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1927                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1928         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1929                 /* our RSSI threshold implementation is supported only for
1930                  * devices that report signal in dBm.
1931                  */
1932                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1933                         return -ENOTSUPP;
1934                 conf->rssi_threshold = nconf->rssi_threshold;
1935         }
1936         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1937                 conf->ht_opmode = nconf->ht_opmode;
1938                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1939                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1940         }
1941         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1942                 conf->dot11MeshHWMPactivePathToRootTimeout =
1943                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1944         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1945                 conf->dot11MeshHWMProotInterval =
1946                         nconf->dot11MeshHWMProotInterval;
1947         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1948                 conf->dot11MeshHWMPconfirmationInterval =
1949                         nconf->dot11MeshHWMPconfirmationInterval;
1950         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1951                 conf->power_mode = nconf->power_mode;
1952                 ieee80211_mps_local_status_update(sdata);
1953         }
1954         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1955                 conf->dot11MeshAwakeWindowDuration =
1956                         nconf->dot11MeshAwakeWindowDuration;
1957         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1958                 conf->plink_timeout = nconf->plink_timeout;
1959         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1960         return 0;
1961 }
1962
1963 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1964                                const struct mesh_config *conf,
1965                                const struct mesh_setup *setup)
1966 {
1967         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1968         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1969         int err;
1970
1971         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1972         err = copy_mesh_setup(ifmsh, setup);
1973         if (err)
1974                 return err;
1975
1976         /* can mesh use other SMPS modes? */
1977         sdata->smps_mode = IEEE80211_SMPS_OFF;
1978         sdata->needed_rx_chains = sdata->local->rx_chains;
1979
1980         mutex_lock(&sdata->local->mtx);
1981         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1982                                         IEEE80211_CHANCTX_SHARED);
1983         mutex_unlock(&sdata->local->mtx);
1984         if (err)
1985                 return err;
1986
1987         return ieee80211_start_mesh(sdata);
1988 }
1989
1990 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1991 {
1992         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1993
1994         ieee80211_stop_mesh(sdata);
1995         mutex_lock(&sdata->local->mtx);
1996         ieee80211_vif_release_channel(sdata);
1997         mutex_unlock(&sdata->local->mtx);
1998
1999         return 0;
2000 }
2001 #endif
2002
2003 static int ieee80211_change_bss(struct wiphy *wiphy,
2004                                 struct net_device *dev,
2005                                 struct bss_parameters *params)
2006 {
2007         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2008         enum nl80211_band band;
2009         u32 changed = 0;
2010
2011         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2012                 return -ENOENT;
2013
2014         band = ieee80211_get_sdata_band(sdata);
2015
2016         if (params->use_cts_prot >= 0) {
2017                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2018                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2019         }
2020         if (params->use_short_preamble >= 0) {
2021                 sdata->vif.bss_conf.use_short_preamble =
2022                         params->use_short_preamble;
2023                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2024         }
2025
2026         if (!sdata->vif.bss_conf.use_short_slot &&
2027             band == NL80211_BAND_5GHZ) {
2028                 sdata->vif.bss_conf.use_short_slot = true;
2029                 changed |= BSS_CHANGED_ERP_SLOT;
2030         }
2031
2032         if (params->use_short_slot_time >= 0) {
2033                 sdata->vif.bss_conf.use_short_slot =
2034                         params->use_short_slot_time;
2035                 changed |= BSS_CHANGED_ERP_SLOT;
2036         }
2037
2038         if (params->basic_rates) {
2039                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2040                                          wiphy->bands[band],
2041                                          params->basic_rates,
2042                                          params->basic_rates_len,
2043                                          &sdata->vif.bss_conf.basic_rates);
2044                 changed |= BSS_CHANGED_BASIC_RATES;
2045         }
2046
2047         if (params->ap_isolate >= 0) {
2048                 if (params->ap_isolate)
2049                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2050                 else
2051                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2052                 ieee80211_check_fast_rx_iface(sdata);
2053         }
2054
2055         if (params->ht_opmode >= 0) {
2056                 sdata->vif.bss_conf.ht_operation_mode =
2057                         (u16) params->ht_opmode;
2058                 changed |= BSS_CHANGED_HT;
2059         }
2060
2061         if (params->p2p_ctwindow >= 0) {
2062                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2063                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2064                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2065                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2066                 changed |= BSS_CHANGED_P2P_PS;
2067         }
2068
2069         if (params->p2p_opp_ps > 0) {
2070                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2071                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2072                 changed |= BSS_CHANGED_P2P_PS;
2073         } else if (params->p2p_opp_ps == 0) {
2074                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2075                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2076                 changed |= BSS_CHANGED_P2P_PS;
2077         }
2078
2079         ieee80211_bss_info_change_notify(sdata, changed);
2080
2081         return 0;
2082 }
2083
2084 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2085                                     struct net_device *dev,
2086                                     struct ieee80211_txq_params *params)
2087 {
2088         struct ieee80211_local *local = wiphy_priv(wiphy);
2089         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2090         struct ieee80211_tx_queue_params p;
2091
2092         if (!local->ops->conf_tx)
2093                 return -EOPNOTSUPP;
2094
2095         if (local->hw.queues < IEEE80211_NUM_ACS)
2096                 return -EOPNOTSUPP;
2097
2098         memset(&p, 0, sizeof(p));
2099         p.aifs = params->aifs;
2100         p.cw_max = params->cwmax;
2101         p.cw_min = params->cwmin;
2102         p.txop = params->txop;
2103
2104         /*
2105          * Setting tx queue params disables u-apsd because it's only
2106          * called in master mode.
2107          */
2108         p.uapsd = false;
2109
2110         sdata->tx_conf[params->ac] = p;
2111         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2112                 wiphy_debug(local->hw.wiphy,
2113                             "failed to set TX queue parameters for AC %d\n",
2114                             params->ac);
2115                 return -EINVAL;
2116         }
2117
2118         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2119
2120         return 0;
2121 }
2122
2123 #ifdef CONFIG_PM
2124 static int ieee80211_suspend(struct wiphy *wiphy,
2125                              struct cfg80211_wowlan *wowlan)
2126 {
2127         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2128 }
2129
2130 static int ieee80211_resume(struct wiphy *wiphy)
2131 {
2132         return __ieee80211_resume(wiphy_priv(wiphy));
2133 }
2134 #else
2135 #define ieee80211_suspend NULL
2136 #define ieee80211_resume NULL
2137 #endif
2138
2139 static int ieee80211_scan(struct wiphy *wiphy,
2140                           struct cfg80211_scan_request *req)
2141 {
2142         struct ieee80211_sub_if_data *sdata;
2143
2144         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2145
2146         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2147         case NL80211_IFTYPE_STATION:
2148         case NL80211_IFTYPE_ADHOC:
2149         case NL80211_IFTYPE_MESH_POINT:
2150         case NL80211_IFTYPE_P2P_CLIENT:
2151         case NL80211_IFTYPE_P2P_DEVICE:
2152                 break;
2153         case NL80211_IFTYPE_P2P_GO:
2154                 if (sdata->local->ops->hw_scan)
2155                         break;
2156                 /*
2157                  * FIXME: implement NoA while scanning in software,
2158                  * for now fall through to allow scanning only when
2159                  * beaconing hasn't been configured yet
2160                  */
2161         case NL80211_IFTYPE_AP:
2162                 /*
2163                  * If the scan has been forced (and the driver supports
2164                  * forcing), don't care about being beaconing already.
2165                  * This will create problems to the attached stations (e.g. all
2166                  * the  frames sent while scanning on other channel will be
2167                  * lost)
2168                  */
2169                 if (sdata->u.ap.beacon &&
2170                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2171                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2172                         return -EOPNOTSUPP;
2173                 break;
2174         case NL80211_IFTYPE_NAN:
2175         default:
2176                 return -EOPNOTSUPP;
2177         }
2178
2179         return ieee80211_request_scan(sdata, req);
2180 }
2181
2182 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2183 {
2184         ieee80211_scan_cancel(wiphy_priv(wiphy));
2185 }
2186
2187 static int
2188 ieee80211_sched_scan_start(struct wiphy *wiphy,
2189                            struct net_device *dev,
2190                            struct cfg80211_sched_scan_request *req)
2191 {
2192         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2193
2194         if (!sdata->local->ops->sched_scan_start)
2195                 return -EOPNOTSUPP;
2196
2197         return ieee80211_request_sched_scan_start(sdata, req);
2198 }
2199
2200 static int
2201 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2202 {
2203         struct ieee80211_local *local = wiphy_priv(wiphy);
2204
2205         if (!local->ops->sched_scan_stop)
2206                 return -EOPNOTSUPP;
2207
2208         return ieee80211_request_sched_scan_stop(local);
2209 }
2210
2211 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2212                           struct cfg80211_auth_request *req)
2213 {
2214         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2215 }
2216
2217 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2218                            struct cfg80211_assoc_request *req)
2219 {
2220         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2221 }
2222
2223 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2224                             struct cfg80211_deauth_request *req)
2225 {
2226         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2227 }
2228
2229 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2230                               struct cfg80211_disassoc_request *req)
2231 {
2232         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2233 }
2234
2235 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2236                                struct cfg80211_ibss_params *params)
2237 {
2238         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2239 }
2240
2241 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2242 {
2243         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2244 }
2245
2246 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2247                               struct ocb_setup *setup)
2248 {
2249         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2250 }
2251
2252 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2253 {
2254         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2255 }
2256
2257 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2258                                     int rate[NUM_NL80211_BANDS])
2259 {
2260         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2261
2262         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2263                sizeof(int) * NUM_NL80211_BANDS);
2264
2265         return 0;
2266 }
2267
2268 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2269 {
2270         struct ieee80211_local *local = wiphy_priv(wiphy);
2271         int err;
2272
2273         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2274                 ieee80211_check_fast_xmit_all(local);
2275
2276                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2277
2278                 if (err) {
2279                         ieee80211_check_fast_xmit_all(local);
2280                         return err;
2281                 }
2282         }
2283
2284         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2285             (changed & WIPHY_PARAM_DYN_ACK)) {
2286                 s16 coverage_class;
2287
2288                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2289                                         wiphy->coverage_class : -1;
2290                 err = drv_set_coverage_class(local, coverage_class);
2291
2292                 if (err)
2293                         return err;
2294         }
2295
2296         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2297                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2298
2299                 if (err)
2300                         return err;
2301         }
2302
2303         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2304                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2305                         return -EINVAL;
2306                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2307         }
2308         if (changed & WIPHY_PARAM_RETRY_LONG) {
2309                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2310                         return -EINVAL;
2311                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2312         }
2313         if (changed &
2314             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2315                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2316
2317         return 0;
2318 }
2319
2320 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2321                                   struct wireless_dev *wdev,
2322                                   enum nl80211_tx_power_setting type, int mbm)
2323 {
2324         struct ieee80211_local *local = wiphy_priv(wiphy);
2325         struct ieee80211_sub_if_data *sdata;
2326         enum nl80211_tx_power_setting txp_type = type;
2327         bool update_txp_type = false;
2328
2329         if (wdev) {
2330                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2331
2332                 switch (type) {
2333                 case NL80211_TX_POWER_AUTOMATIC:
2334                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2335                         txp_type = NL80211_TX_POWER_LIMITED;
2336                         break;
2337                 case NL80211_TX_POWER_LIMITED:
2338                 case NL80211_TX_POWER_FIXED:
2339                         if (mbm < 0 || (mbm % 100))
2340                                 return -EOPNOTSUPP;
2341                         sdata->user_power_level = MBM_TO_DBM(mbm);
2342                         break;
2343                 }
2344
2345                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2346                         update_txp_type = true;
2347                         sdata->vif.bss_conf.txpower_type = txp_type;
2348                 }
2349
2350                 ieee80211_recalc_txpower(sdata, update_txp_type);
2351
2352                 return 0;
2353         }
2354
2355         switch (type) {
2356         case NL80211_TX_POWER_AUTOMATIC:
2357                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2358                 txp_type = NL80211_TX_POWER_LIMITED;
2359                 break;
2360         case NL80211_TX_POWER_LIMITED:
2361         case NL80211_TX_POWER_FIXED:
2362                 if (mbm < 0 || (mbm % 100))
2363                         return -EOPNOTSUPP;
2364                 local->user_power_level = MBM_TO_DBM(mbm);
2365                 break;
2366         }
2367
2368         mutex_lock(&local->iflist_mtx);
2369         list_for_each_entry(sdata, &local->interfaces, list) {
2370                 sdata->user_power_level = local->user_power_level;
2371                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2372                         update_txp_type = true;
2373                 sdata->vif.bss_conf.txpower_type = txp_type;
2374         }
2375         list_for_each_entry(sdata, &local->interfaces, list)
2376                 ieee80211_recalc_txpower(sdata, update_txp_type);
2377         mutex_unlock(&local->iflist_mtx);
2378
2379         return 0;
2380 }
2381
2382 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2383                                   struct wireless_dev *wdev,
2384                                   int *dbm)
2385 {
2386         struct ieee80211_local *local = wiphy_priv(wiphy);
2387         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2388
2389         if (local->ops->get_txpower)
2390                 return drv_get_txpower(local, sdata, dbm);
2391
2392         if (!local->use_chanctx)
2393                 *dbm = local->hw.conf.power_level;
2394         else
2395                 *dbm = sdata->vif.bss_conf.txpower;
2396
2397         return 0;
2398 }
2399
2400 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2401                                   const u8 *addr)
2402 {
2403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2404
2405         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2406
2407         return 0;
2408 }
2409
2410 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2411 {
2412         struct ieee80211_local *local = wiphy_priv(wiphy);
2413
2414         drv_rfkill_poll(local);
2415 }
2416
2417 #ifdef CONFIG_NL80211_TESTMODE
2418 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2419                                   struct wireless_dev *wdev,
2420                                   void *data, int len)
2421 {
2422         struct ieee80211_local *local = wiphy_priv(wiphy);
2423         struct ieee80211_vif *vif = NULL;
2424
2425         if (!local->ops->testmode_cmd)
2426                 return -EOPNOTSUPP;
2427
2428         if (wdev) {
2429                 struct ieee80211_sub_if_data *sdata;
2430
2431                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2432                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2433                         vif = &sdata->vif;
2434         }
2435
2436         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2437 }
2438
2439 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2440                                    struct sk_buff *skb,
2441                                    struct netlink_callback *cb,
2442                                    void *data, int len)
2443 {
2444         struct ieee80211_local *local = wiphy_priv(wiphy);
2445
2446         if (!local->ops->testmode_dump)
2447                 return -EOPNOTSUPP;
2448
2449         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2450 }
2451 #endif
2452
2453 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2454                                 enum ieee80211_smps_mode smps_mode)
2455 {
2456         struct sta_info *sta;
2457         enum ieee80211_smps_mode old_req;
2458
2459         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2460                 return -EINVAL;
2461
2462         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2463                 return 0;
2464
2465         old_req = sdata->u.ap.req_smps;
2466         sdata->u.ap.req_smps = smps_mode;
2467
2468         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2469         if (old_req == smps_mode ||
2470             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2471                 return 0;
2472
2473         ht_dbg(sdata,
2474                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2475                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2476
2477         mutex_lock(&sdata->local->sta_mtx);
2478         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2479                 /*
2480                  * Only stations associated to our AP and
2481                  * associated VLANs
2482                  */
2483                 if (sta->sdata->bss != &sdata->u.ap)
2484                         continue;
2485
2486                 /* This station doesn't support MIMO - skip it */
2487                 if (sta_info_tx_streams(sta) == 1)
2488                         continue;
2489
2490                 /*
2491                  * Don't wake up a STA just to send the action frame
2492                  * unless we are getting more restrictive.
2493                  */
2494                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2495                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2496                                                    smps_mode)) {
2497                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2498                                sta->sta.addr);
2499                         continue;
2500                 }
2501
2502                 /*
2503                  * If the STA is not authorized, wait until it gets
2504                  * authorized and the action frame will be sent then.
2505                  */
2506                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2507                         continue;
2508
2509                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2510                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2511                                            sdata->vif.bss_conf.bssid);
2512         }
2513         mutex_unlock(&sdata->local->sta_mtx);
2514
2515         sdata->smps_mode = smps_mode;
2516         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2517
2518         return 0;
2519 }
2520
2521 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2522                                  enum ieee80211_smps_mode smps_mode)
2523 {
2524         const u8 *ap;
2525         enum ieee80211_smps_mode old_req;
2526         int err;
2527         struct sta_info *sta;
2528         bool tdls_peer_found = false;
2529
2530         lockdep_assert_held(&sdata->wdev.mtx);
2531
2532         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2533                 return -EINVAL;
2534
2535         old_req = sdata->u.mgd.req_smps;
2536         sdata->u.mgd.req_smps = smps_mode;
2537
2538         if (old_req == smps_mode &&
2539             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2540                 return 0;
2541
2542         /*
2543          * If not associated, or current association is not an HT
2544          * association, there's no need to do anything, just store
2545          * the new value until we associate.
2546          */
2547         if (!sdata->u.mgd.associated ||
2548             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2549                 return 0;
2550
2551         ap = sdata->u.mgd.associated->bssid;
2552
2553         rcu_read_lock();
2554         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2555                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2556                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2557                         continue;
2558
2559                 tdls_peer_found = true;
2560                 break;
2561         }
2562         rcu_read_unlock();
2563
2564         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2565                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2566                         smps_mode = IEEE80211_SMPS_OFF;
2567                 else
2568                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2569         }
2570
2571         /* send SM PS frame to AP */
2572         err = ieee80211_send_smps_action(sdata, smps_mode,
2573                                          ap, ap);
2574         if (err)
2575                 sdata->u.mgd.req_smps = old_req;
2576         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2577                 ieee80211_teardown_tdls_peers(sdata);
2578
2579         return err;
2580 }
2581
2582 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2583                                     bool enabled, int timeout)
2584 {
2585         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2586         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2587
2588         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2589                 return -EOPNOTSUPP;
2590
2591         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2592                 return -EOPNOTSUPP;
2593
2594         if (enabled == sdata->u.mgd.powersave &&
2595             timeout == local->dynamic_ps_forced_timeout)
2596                 return 0;
2597
2598         sdata->u.mgd.powersave = enabled;
2599         local->dynamic_ps_forced_timeout = timeout;
2600
2601         /* no change, but if automatic follow powersave */
2602         sdata_lock(sdata);
2603         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2604         sdata_unlock(sdata);
2605
2606         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2607                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2608
2609         ieee80211_recalc_ps(local);
2610         ieee80211_recalc_ps_vif(sdata);
2611
2612         return 0;
2613 }
2614
2615 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2616                                          struct net_device *dev,
2617                                          s32 rssi_thold, u32 rssi_hyst)
2618 {
2619         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2620         struct ieee80211_vif *vif = &sdata->vif;
2621         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2622
2623         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2624             rssi_hyst == bss_conf->cqm_rssi_hyst)
2625                 return 0;
2626
2627         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2628             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2629                 return -EOPNOTSUPP;
2630
2631         bss_conf->cqm_rssi_thold = rssi_thold;
2632         bss_conf->cqm_rssi_hyst = rssi_hyst;
2633         sdata->u.mgd.last_cqm_event_signal = 0;
2634
2635         /* tell the driver upon association, unless already associated */
2636         if (sdata->u.mgd.associated &&
2637             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2638                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2639
2640         return 0;
2641 }
2642
2643 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2644                                       struct net_device *dev,
2645                                       const u8 *addr,
2646                                       const struct cfg80211_bitrate_mask *mask)
2647 {
2648         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2649         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2650         int i, ret;
2651
2652         if (!ieee80211_sdata_running(sdata))
2653                 return -ENETDOWN;
2654
2655         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2656                 ret = drv_set_bitrate_mask(local, sdata, mask);
2657                 if (ret)
2658                         return ret;
2659         }
2660
2661         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2662                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2663                 int j;
2664
2665                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2666                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2667                        sizeof(mask->control[i].ht_mcs));
2668                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2669                        mask->control[i].vht_mcs,
2670                        sizeof(mask->control[i].vht_mcs));
2671
2672                 sdata->rc_has_mcs_mask[i] = false;
2673                 sdata->rc_has_vht_mcs_mask[i] = false;
2674                 if (!sband)
2675                         continue;
2676
2677                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2678                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2679                                 sdata->rc_has_mcs_mask[i] = true;
2680                                 break;
2681                         }
2682                 }
2683
2684                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2685                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2686                                 sdata->rc_has_vht_mcs_mask[i] = true;
2687                                 break;
2688                         }
2689                 }
2690         }
2691
2692         return 0;
2693 }
2694
2695 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2696                                            struct net_device *dev,
2697                                            struct cfg80211_chan_def *chandef,
2698                                            u32 cac_time_ms)
2699 {
2700         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2701         struct ieee80211_local *local = sdata->local;
2702         int err;
2703
2704         mutex_lock(&local->mtx);
2705         if (!list_empty(&local->roc_list) || local->scanning) {
2706                 err = -EBUSY;
2707                 goto out_unlock;
2708         }
2709
2710         /* whatever, but channel contexts should not complain about that one */
2711         sdata->smps_mode = IEEE80211_SMPS_OFF;
2712         sdata->needed_rx_chains = local->rx_chains;
2713
2714         err = ieee80211_vif_use_channel(sdata, chandef,
2715                                         IEEE80211_CHANCTX_SHARED);
2716         if (err)
2717                 goto out_unlock;
2718
2719         ieee80211_queue_delayed_work(&sdata->local->hw,
2720                                      &sdata->dfs_cac_timer_work,
2721                                      msecs_to_jiffies(cac_time_ms));
2722
2723  out_unlock:
2724         mutex_unlock(&local->mtx);
2725         return err;
2726 }
2727
2728 static struct cfg80211_beacon_data *
2729 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2730 {
2731         struct cfg80211_beacon_data *new_beacon;
2732         u8 *pos;
2733         int len;
2734
2735         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2736               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2737               beacon->probe_resp_len;
2738
2739         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2740         if (!new_beacon)
2741                 return NULL;
2742
2743         pos = (u8 *)(new_beacon + 1);
2744         if (beacon->head_len) {
2745                 new_beacon->head_len = beacon->head_len;
2746                 new_beacon->head = pos;
2747                 memcpy(pos, beacon->head, beacon->head_len);
2748                 pos += beacon->head_len;
2749         }
2750         if (beacon->tail_len) {
2751                 new_beacon->tail_len = beacon->tail_len;
2752                 new_beacon->tail = pos;
2753                 memcpy(pos, beacon->tail, beacon->tail_len);
2754                 pos += beacon->tail_len;
2755         }
2756         if (beacon->beacon_ies_len) {
2757                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2758                 new_beacon->beacon_ies = pos;
2759                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2760                 pos += beacon->beacon_ies_len;
2761         }
2762         if (beacon->proberesp_ies_len) {
2763                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2764                 new_beacon->proberesp_ies = pos;
2765                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2766                 pos += beacon->proberesp_ies_len;
2767         }
2768         if (beacon->assocresp_ies_len) {
2769                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2770                 new_beacon->assocresp_ies = pos;
2771                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2772                 pos += beacon->assocresp_ies_len;
2773         }
2774         if (beacon->probe_resp_len) {
2775                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2776                 beacon->probe_resp = pos;
2777                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2778                 pos += beacon->probe_resp_len;
2779         }
2780
2781         return new_beacon;
2782 }
2783
2784 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2785 {
2786         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2787
2788         ieee80211_queue_work(&sdata->local->hw,
2789                              &sdata->csa_finalize_work);
2790 }
2791 EXPORT_SYMBOL(ieee80211_csa_finish);
2792
2793 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2794                                           u32 *changed)
2795 {
2796         int err;
2797
2798         switch (sdata->vif.type) {
2799         case NL80211_IFTYPE_AP:
2800                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2801                                               NULL);
2802                 kfree(sdata->u.ap.next_beacon);
2803                 sdata->u.ap.next_beacon = NULL;
2804
2805                 if (err < 0)
2806                         return err;
2807                 *changed |= err;
2808                 break;
2809         case NL80211_IFTYPE_ADHOC:
2810                 err = ieee80211_ibss_finish_csa(sdata);
2811                 if (err < 0)
2812                         return err;
2813                 *changed |= err;
2814                 break;
2815 #ifdef CONFIG_MAC80211_MESH
2816         case NL80211_IFTYPE_MESH_POINT:
2817                 err = ieee80211_mesh_finish_csa(sdata);
2818                 if (err < 0)
2819                         return err;
2820                 *changed |= err;
2821                 break;
2822 #endif
2823         default:
2824                 WARN_ON(1);
2825                 return -EINVAL;
2826         }
2827
2828         return 0;
2829 }
2830
2831 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2832 {
2833         struct ieee80211_local *local = sdata->local;
2834         u32 changed = 0;
2835         int err;
2836
2837         sdata_assert_lock(sdata);
2838         lockdep_assert_held(&local->mtx);
2839         lockdep_assert_held(&local->chanctx_mtx);
2840
2841         /*
2842          * using reservation isn't immediate as it may be deferred until later
2843          * with multi-vif. once reservation is complete it will re-schedule the
2844          * work with no reserved_chanctx so verify chandef to check if it
2845          * completed successfully
2846          */
2847
2848         if (sdata->reserved_chanctx) {
2849                 /*
2850                  * with multi-vif csa driver may call ieee80211_csa_finish()
2851                  * many times while waiting for other interfaces to use their
2852                  * reservations
2853                  */
2854                 if (sdata->reserved_ready)
2855                         return 0;
2856
2857                 return ieee80211_vif_use_reserved_context(sdata);
2858         }
2859
2860         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2861                                         &sdata->csa_chandef))
2862                 return -EINVAL;
2863
2864         sdata->vif.csa_active = false;
2865
2866         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2867         if (err)
2868                 return err;
2869
2870         ieee80211_bss_info_change_notify(sdata, changed);
2871
2872         if (sdata->csa_block_tx) {
2873                 ieee80211_wake_vif_queues(local, sdata,
2874                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2875                 sdata->csa_block_tx = false;
2876         }
2877
2878         err = drv_post_channel_switch(sdata);
2879         if (err)
2880                 return err;
2881
2882         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2883
2884         return 0;
2885 }
2886
2887 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2888 {
2889         if (__ieee80211_csa_finalize(sdata)) {
2890                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2891                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2892                                     GFP_KERNEL);
2893         }
2894 }
2895
2896 void ieee80211_csa_finalize_work(struct work_struct *work)
2897 {
2898         struct ieee80211_sub_if_data *sdata =
2899                 container_of(work, struct ieee80211_sub_if_data,
2900                              csa_finalize_work);
2901         struct ieee80211_local *local = sdata->local;
2902
2903         sdata_lock(sdata);
2904         mutex_lock(&local->mtx);
2905         mutex_lock(&local->chanctx_mtx);
2906
2907         /* AP might have been stopped while waiting for the lock. */
2908         if (!sdata->vif.csa_active)
2909                 goto unlock;
2910
2911         if (!ieee80211_sdata_running(sdata))
2912                 goto unlock;
2913
2914         ieee80211_csa_finalize(sdata);
2915
2916 unlock:
2917         mutex_unlock(&local->chanctx_mtx);
2918         mutex_unlock(&local->mtx);
2919         sdata_unlock(sdata);
2920 }
2921
2922 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2923                                     struct cfg80211_csa_settings *params,
2924                                     u32 *changed)
2925 {
2926         struct ieee80211_csa_settings csa = {};
2927         int err;
2928
2929         switch (sdata->vif.type) {
2930         case NL80211_IFTYPE_AP:
2931                 sdata->u.ap.next_beacon =
2932                         cfg80211_beacon_dup(&params->beacon_after);
2933                 if (!sdata->u.ap.next_beacon)
2934                         return -ENOMEM;
2935
2936                 /*
2937                  * With a count of 0, we don't have to wait for any
2938                  * TBTT before switching, so complete the CSA
2939                  * immediately.  In theory, with a count == 1 we
2940                  * should delay the switch until just before the next
2941                  * TBTT, but that would complicate things so we switch
2942                  * immediately too.  If we would delay the switch
2943                  * until the next TBTT, we would have to set the probe
2944                  * response here.
2945                  *
2946                  * TODO: A channel switch with count <= 1 without
2947                  * sending a CSA action frame is kind of useless,
2948                  * because the clients won't know we're changing
2949                  * channels.  The action frame must be implemented
2950                  * either here or in the userspace.
2951                  */
2952                 if (params->count <= 1)
2953                         break;
2954
2955                 if ((params->n_counter_offsets_beacon >
2956                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2957                     (params->n_counter_offsets_presp >
2958                      IEEE80211_MAX_CSA_COUNTERS_NUM))
2959                         return -EINVAL;
2960
2961                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2962                 csa.counter_offsets_presp = params->counter_offsets_presp;
2963                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2964                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2965                 csa.count = params->count;
2966
2967                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2968                 if (err < 0) {
2969                         kfree(sdata->u.ap.next_beacon);
2970                         return err;
2971                 }
2972                 *changed |= err;
2973
2974                 break;
2975         case NL80211_IFTYPE_ADHOC:
2976                 if (!sdata->vif.bss_conf.ibss_joined)
2977                         return -EINVAL;
2978
2979                 if (params->chandef.width != sdata->u.ibss.chandef.width)
2980                         return -EINVAL;
2981
2982                 switch (params->chandef.width) {
2983                 case NL80211_CHAN_WIDTH_40:
2984                         if (cfg80211_get_chandef_type(&params->chandef) !=
2985                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2986                                 return -EINVAL;
2987                 case NL80211_CHAN_WIDTH_5:
2988                 case NL80211_CHAN_WIDTH_10:
2989                 case NL80211_CHAN_WIDTH_20_NOHT:
2990                 case NL80211_CHAN_WIDTH_20:
2991                         break;
2992                 default:
2993                         return -EINVAL;
2994                 }
2995
2996                 /* changes into another band are not supported */
2997                 if (sdata->u.ibss.chandef.chan->band !=
2998                     params->chandef.chan->band)
2999                         return -EINVAL;
3000
3001                 /* see comments in the NL80211_IFTYPE_AP block */
3002                 if (params->count > 1) {
3003                         err = ieee80211_ibss_csa_beacon(sdata, params);
3004                         if (err < 0)
3005                                 return err;
3006                         *changed |= err;
3007                 }
3008
3009                 ieee80211_send_action_csa(sdata, params);
3010
3011                 break;
3012 #ifdef CONFIG_MAC80211_MESH
3013         case NL80211_IFTYPE_MESH_POINT: {
3014                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3015
3016                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3017                         return -EINVAL;
3018
3019                 /* changes into another band are not supported */
3020                 if (sdata->vif.bss_conf.chandef.chan->band !=
3021                     params->chandef.chan->band)
3022                         return -EINVAL;
3023
3024                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3025                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3026                         if (!ifmsh->pre_value)
3027                                 ifmsh->pre_value = 1;
3028                         else
3029                                 ifmsh->pre_value++;
3030                 }
3031
3032                 /* see comments in the NL80211_IFTYPE_AP block */
3033                 if (params->count > 1) {
3034                         err = ieee80211_mesh_csa_beacon(sdata, params);
3035                         if (err < 0) {
3036                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3037                                 return err;
3038                         }
3039                         *changed |= err;
3040                 }
3041
3042                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3043                         ieee80211_send_action_csa(sdata, params);
3044
3045                 break;
3046                 }
3047 #endif
3048         default:
3049                 return -EOPNOTSUPP;
3050         }
3051
3052         return 0;
3053 }
3054
3055 static int
3056 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3057                            struct cfg80211_csa_settings *params)
3058 {
3059         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3060         struct ieee80211_local *local = sdata->local;
3061         struct ieee80211_channel_switch ch_switch;
3062         struct ieee80211_chanctx_conf *conf;
3063         struct ieee80211_chanctx *chanctx;
3064         u32 changed = 0;
3065         int err;
3066
3067         sdata_assert_lock(sdata);
3068         lockdep_assert_held(&local->mtx);
3069
3070         if (!list_empty(&local->roc_list) || local->scanning)
3071                 return -EBUSY;
3072
3073         if (sdata->wdev.cac_started)
3074                 return -EBUSY;
3075
3076         if (cfg80211_chandef_identical(&params->chandef,
3077                                        &sdata->vif.bss_conf.chandef))
3078                 return -EINVAL;
3079
3080         /* don't allow another channel switch if one is already active. */
3081         if (sdata->vif.csa_active)
3082                 return -EBUSY;
3083
3084         mutex_lock(&local->chanctx_mtx);
3085         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3086                                          lockdep_is_held(&local->chanctx_mtx));
3087         if (!conf) {
3088                 err = -EBUSY;
3089                 goto out;
3090         }
3091
3092         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3093
3094         ch_switch.timestamp = 0;
3095         ch_switch.device_timestamp = 0;
3096         ch_switch.block_tx = params->block_tx;
3097         ch_switch.chandef = params->chandef;
3098         ch_switch.count = params->count;
3099
3100         err = drv_pre_channel_switch(sdata, &ch_switch);
3101         if (err)
3102                 goto out;
3103
3104         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3105                                             chanctx->mode,
3106                                             params->radar_required);
3107         if (err)
3108                 goto out;
3109
3110         /* if reservation is invalid then this will fail */
3111         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3112         if (err) {
3113                 ieee80211_vif_unreserve_chanctx(sdata);
3114                 goto out;
3115         }
3116
3117         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3118         if (err) {
3119                 ieee80211_vif_unreserve_chanctx(sdata);
3120                 goto out;
3121         }
3122
3123         sdata->csa_chandef = params->chandef;
3124         sdata->csa_block_tx = params->block_tx;
3125         sdata->vif.csa_active = true;
3126
3127         if (sdata->csa_block_tx)
3128                 ieee80211_stop_vif_queues(local, sdata,
3129                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3130
3131         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3132                                           params->count);
3133
3134         if (changed) {
3135                 ieee80211_bss_info_change_notify(sdata, changed);
3136                 drv_channel_switch_beacon(sdata, &params->chandef);
3137         } else {
3138                 /* if the beacon didn't change, we can finalize immediately */
3139                 ieee80211_csa_finalize(sdata);
3140         }
3141
3142 out:
3143         mutex_unlock(&local->chanctx_mtx);
3144         return err;
3145 }
3146
3147 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3148                              struct cfg80211_csa_settings *params)
3149 {
3150         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3151         struct ieee80211_local *local = sdata->local;
3152         int err;
3153
3154         mutex_lock(&local->mtx);
3155         err = __ieee80211_channel_switch(wiphy, dev, params);
3156         mutex_unlock(&local->mtx);
3157
3158         return err;
3159 }
3160
3161 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3162 {
3163         lockdep_assert_held(&local->mtx);
3164
3165         local->roc_cookie_counter++;
3166
3167         /* wow, you wrapped 64 bits ... more likely a bug */
3168         if (WARN_ON(local->roc_cookie_counter == 0))
3169                 local->roc_cookie_counter++;
3170
3171         return local->roc_cookie_counter;
3172 }
3173
3174 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3175                              u64 *cookie, gfp_t gfp)
3176 {
3177         unsigned long spin_flags;
3178         struct sk_buff *ack_skb;
3179         int id;
3180
3181         ack_skb = skb_copy(skb, gfp);
3182         if (!ack_skb)
3183                 return -ENOMEM;
3184
3185         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3186         id = idr_alloc(&local->ack_status_frames, ack_skb,
3187                        1, 0x10000, GFP_ATOMIC);
3188         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3189
3190         if (id < 0) {
3191                 kfree_skb(ack_skb);
3192                 return -ENOMEM;
3193         }
3194
3195         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3196
3197         *cookie = ieee80211_mgmt_tx_cookie(local);
3198         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3199
3200         return 0;
3201 }
3202
3203 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3204                                           struct wireless_dev *wdev,
3205                                           u16 frame_type, bool reg)
3206 {
3207         struct ieee80211_local *local = wiphy_priv(wiphy);
3208         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3209
3210         switch (frame_type) {
3211         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3212                 if (reg) {
3213                         local->probe_req_reg++;
3214                         sdata->vif.probe_req_reg++;
3215                 } else {
3216                         if (local->probe_req_reg)
3217                                 local->probe_req_reg--;
3218
3219                         if (sdata->vif.probe_req_reg)
3220                                 sdata->vif.probe_req_reg--;
3221                 }
3222
3223                 if (!local->open_count)
3224                         break;
3225
3226                 if (sdata->vif.probe_req_reg == 1)
3227                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3228                                                 FIF_PROBE_REQ);
3229                 else if (sdata->vif.probe_req_reg == 0)
3230                         drv_config_iface_filter(local, sdata, 0,
3231                                                 FIF_PROBE_REQ);
3232
3233                 ieee80211_configure_filter(local);
3234                 break;
3235         default:
3236                 break;
3237         }
3238 }
3239
3240 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3241 {
3242         struct ieee80211_local *local = wiphy_priv(wiphy);
3243
3244         if (local->started)
3245                 return -EOPNOTSUPP;
3246
3247         return drv_set_antenna(local, tx_ant, rx_ant);
3248 }
3249
3250 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3251 {
3252         struct ieee80211_local *local = wiphy_priv(wiphy);
3253
3254         return drv_get_antenna(local, tx_ant, rx_ant);
3255 }
3256
3257 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3258                                     struct net_device *dev,
3259                                     struct cfg80211_gtk_rekey_data *data)
3260 {
3261         struct ieee80211_local *local = wiphy_priv(wiphy);
3262         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3263
3264         if (!local->ops->set_rekey_data)
3265                 return -EOPNOTSUPP;
3266
3267         drv_set_rekey_data(local, sdata, data);
3268
3269         return 0;
3270 }
3271
3272 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3273                                   const u8 *peer, u64 *cookie)
3274 {
3275         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3276         struct ieee80211_local *local = sdata->local;
3277         struct ieee80211_qos_hdr *nullfunc;
3278         struct sk_buff *skb;
3279         int size = sizeof(*nullfunc);
3280         __le16 fc;
3281         bool qos;
3282         struct ieee80211_tx_info *info;
3283         struct sta_info *sta;
3284         struct ieee80211_chanctx_conf *chanctx_conf;
3285         enum nl80211_band band;
3286         int ret;
3287
3288         /* the lock is needed to assign the cookie later */
3289         mutex_lock(&local->mtx);
3290
3291         rcu_read_lock();
3292         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3293         if (WARN_ON(!chanctx_conf)) {
3294                 ret = -EINVAL;
3295                 goto unlock;
3296         }
3297         band = chanctx_conf->def.chan->band;
3298         sta = sta_info_get_bss(sdata, peer);
3299         if (sta) {
3300                 qos = sta->sta.wme;
3301         } else {
3302                 ret = -ENOLINK;
3303                 goto unlock;
3304         }
3305
3306         if (qos) {
3307                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3308                                  IEEE80211_STYPE_QOS_NULLFUNC |
3309                                  IEEE80211_FCTL_FROMDS);
3310         } else {
3311                 size -= 2;
3312                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3313                                  IEEE80211_STYPE_NULLFUNC |
3314                                  IEEE80211_FCTL_FROMDS);
3315         }
3316
3317         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3318         if (!skb) {
3319                 ret = -ENOMEM;
3320                 goto unlock;
3321         }
3322
3323         skb->dev = dev;
3324
3325         skb_reserve(skb, local->hw.extra_tx_headroom);
3326
3327         nullfunc = (void *) skb_put(skb, size);
3328         nullfunc->frame_control = fc;
3329         nullfunc->duration_id = 0;
3330         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3331         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3332         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3333         nullfunc->seq_ctrl = 0;
3334
3335         info = IEEE80211_SKB_CB(skb);
3336
3337         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3338                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3339         info->band = band;
3340
3341         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3342         skb->priority = 7;
3343         if (qos)
3344                 nullfunc->qos_ctrl = cpu_to_le16(7);
3345
3346         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3347         if (ret) {
3348                 kfree_skb(skb);
3349                 goto unlock;
3350         }
3351
3352         local_bh_disable();
3353         ieee80211_xmit(sdata, sta, skb);
3354         local_bh_enable();
3355
3356         ret = 0;
3357 unlock:
3358         rcu_read_unlock();
3359         mutex_unlock(&local->mtx);
3360
3361         return ret;
3362 }
3363
3364 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3365                                      struct wireless_dev *wdev,
3366                                      struct cfg80211_chan_def *chandef)
3367 {
3368         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3369         struct ieee80211_local *local = wiphy_priv(wiphy);
3370         struct ieee80211_chanctx_conf *chanctx_conf;
3371         int ret = -ENODATA;
3372
3373         rcu_read_lock();
3374         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3375         if (chanctx_conf) {
3376                 *chandef = sdata->vif.bss_conf.chandef;
3377                 ret = 0;
3378         } else if (local->open_count > 0 &&
3379                    local->open_count == local->monitors &&
3380                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3381                 if (local->use_chanctx)
3382                         *chandef = local->monitor_chandef;
3383                 else
3384                         *chandef = local->_oper_chandef;
3385                 ret = 0;
3386         }
3387         rcu_read_unlock();
3388
3389         return ret;
3390 }
3391
3392 #ifdef CONFIG_PM
3393 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3394 {
3395         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3396 }
3397 #endif
3398
3399 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3400                                  struct net_device *dev,
3401                                  struct cfg80211_qos_map *qos_map)
3402 {
3403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3404         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3405
3406         if (qos_map) {
3407                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3408                 if (!new_qos_map)
3409                         return -ENOMEM;
3410                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3411         } else {
3412                 /* A NULL qos_map was passed to disable QoS mapping */
3413                 new_qos_map = NULL;
3414         }
3415
3416         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3417         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3418         if (old_qos_map)
3419                 kfree_rcu(old_qos_map, rcu_head);
3420
3421         return 0;
3422 }
3423
3424 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3425                                       struct net_device *dev,
3426                                       struct cfg80211_chan_def *chandef)
3427 {
3428         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3429         int ret;
3430         u32 changed = 0;
3431
3432         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3433         if (ret == 0)
3434                 ieee80211_bss_info_change_notify(sdata, changed);
3435
3436         return ret;
3437 }
3438
3439 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3440                                u8 tsid, const u8 *peer, u8 up,
3441                                u16 admitted_time)
3442 {
3443         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3444         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3445         int ac = ieee802_1d_to_ac[up];
3446
3447         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3448                 return -EOPNOTSUPP;
3449
3450         if (!(sdata->wmm_acm & BIT(up)))
3451                 return -EINVAL;
3452
3453         if (ifmgd->tx_tspec[ac].admitted_time)
3454                 return -EBUSY;
3455
3456         if (admitted_time) {
3457                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3458                 ifmgd->tx_tspec[ac].tsid = tsid;
3459                 ifmgd->tx_tspec[ac].up = up;
3460         }
3461
3462         return 0;
3463 }
3464
3465 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3466                                u8 tsid, const u8 *peer)
3467 {
3468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3469         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3470         struct ieee80211_local *local = wiphy_priv(wiphy);
3471         int ac;
3472
3473         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3474                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3475
3476                 /* skip unused entries */
3477                 if (!tx_tspec->admitted_time)
3478                         continue;
3479
3480                 if (tx_tspec->tsid != tsid)
3481                         continue;
3482
3483                 /* due to this new packets will be reassigned to non-ACM ACs */
3484                 tx_tspec->up = -1;
3485
3486                 /* Make sure that all packets have been sent to avoid to
3487                  * restore the QoS params on packets that are still on the
3488                  * queues.
3489                  */
3490                 synchronize_net();
3491                 ieee80211_flush_queues(local, sdata, false);
3492
3493                 /* restore the normal QoS parameters
3494                  * (unconditionally to avoid races)
3495                  */
3496                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3497                 tx_tspec->downgraded = false;
3498                 ieee80211_sta_handle_tspec_ac_params(sdata);
3499
3500                 /* finally clear all the data */
3501                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3502
3503                 return 0;
3504         }
3505
3506         return -ENOENT;
3507 }
3508
3509 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3510                                    u8 inst_id,
3511                                    enum nl80211_nan_func_term_reason reason,
3512                                    gfp_t gfp)
3513 {
3514         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3515         struct cfg80211_nan_func *func;
3516         u64 cookie;
3517
3518         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3519                 return;
3520
3521         spin_lock_bh(&sdata->u.nan.func_lock);
3522
3523         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3524         if (WARN_ON(!func)) {
3525                 spin_unlock_bh(&sdata->u.nan.func_lock);
3526                 return;
3527         }
3528
3529         cookie = func->cookie;
3530         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3531
3532         spin_unlock_bh(&sdata->u.nan.func_lock);
3533
3534         cfg80211_free_nan_func(func);
3535
3536         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3537                                      reason, cookie, gfp);
3538 }
3539 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3540
3541 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3542                               struct cfg80211_nan_match_params *match,
3543                               gfp_t gfp)
3544 {
3545         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3546         struct cfg80211_nan_func *func;
3547
3548         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3549                 return;
3550
3551         spin_lock_bh(&sdata->u.nan.func_lock);
3552
3553         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3554         if (WARN_ON(!func)) {
3555                 spin_unlock_bh(&sdata->u.nan.func_lock);
3556                 return;
3557         }
3558         match->cookie = func->cookie;
3559
3560         spin_unlock_bh(&sdata->u.nan.func_lock);
3561
3562         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3563 }
3564 EXPORT_SYMBOL(ieee80211_nan_func_match);
3565
3566 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3567                                               struct net_device *dev,
3568                                               const bool enabled)
3569 {
3570         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3571
3572         sdata->u.ap.multicast_to_unicast = enabled;
3573
3574         return 0;
3575 }
3576
3577 const struct cfg80211_ops mac80211_config_ops = {
3578         .add_virtual_intf = ieee80211_add_iface,
3579         .del_virtual_intf = ieee80211_del_iface,
3580         .change_virtual_intf = ieee80211_change_iface,
3581         .start_p2p_device = ieee80211_start_p2p_device,
3582         .stop_p2p_device = ieee80211_stop_p2p_device,
3583         .add_key = ieee80211_add_key,
3584         .del_key = ieee80211_del_key,
3585         .get_key = ieee80211_get_key,
3586         .set_default_key = ieee80211_config_default_key,
3587         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3588         .start_ap = ieee80211_start_ap,
3589         .change_beacon = ieee80211_change_beacon,
3590         .stop_ap = ieee80211_stop_ap,
3591         .add_station = ieee80211_add_station,
3592         .del_station = ieee80211_del_station,
3593         .change_station = ieee80211_change_station,
3594         .get_station = ieee80211_get_station,
3595         .dump_station = ieee80211_dump_station,
3596         .dump_survey = ieee80211_dump_survey,
3597 #ifdef CONFIG_MAC80211_MESH
3598         .add_mpath = ieee80211_add_mpath,
3599         .del_mpath = ieee80211_del_mpath,
3600         .change_mpath = ieee80211_change_mpath,
3601         .get_mpath = ieee80211_get_mpath,
3602         .dump_mpath = ieee80211_dump_mpath,
3603         .get_mpp = ieee80211_get_mpp,
3604         .dump_mpp = ieee80211_dump_mpp,
3605         .update_mesh_config = ieee80211_update_mesh_config,
3606         .get_mesh_config = ieee80211_get_mesh_config,
3607         .join_mesh = ieee80211_join_mesh,
3608         .leave_mesh = ieee80211_leave_mesh,
3609 #endif
3610         .join_ocb = ieee80211_join_ocb,
3611         .leave_ocb = ieee80211_leave_ocb,
3612         .change_bss = ieee80211_change_bss,
3613         .set_txq_params = ieee80211_set_txq_params,
3614         .set_monitor_channel = ieee80211_set_monitor_channel,
3615         .suspend = ieee80211_suspend,
3616         .resume = ieee80211_resume,
3617         .scan = ieee80211_scan,
3618         .abort_scan = ieee80211_abort_scan,
3619         .sched_scan_start = ieee80211_sched_scan_start,
3620         .sched_scan_stop = ieee80211_sched_scan_stop,
3621         .auth = ieee80211_auth,
3622         .assoc = ieee80211_assoc,
3623         .deauth = ieee80211_deauth,
3624         .disassoc = ieee80211_disassoc,
3625         .join_ibss = ieee80211_join_ibss,
3626         .leave_ibss = ieee80211_leave_ibss,
3627         .set_mcast_rate = ieee80211_set_mcast_rate,
3628         .set_wiphy_params = ieee80211_set_wiphy_params,
3629         .set_tx_power = ieee80211_set_tx_power,
3630         .get_tx_power = ieee80211_get_tx_power,
3631         .set_wds_peer = ieee80211_set_wds_peer,
3632         .rfkill_poll = ieee80211_rfkill_poll,
3633         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3634         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3635         .set_power_mgmt = ieee80211_set_power_mgmt,
3636         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3637         .remain_on_channel = ieee80211_remain_on_channel,
3638         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3639         .mgmt_tx = ieee80211_mgmt_tx,
3640         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3641         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3642         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3643         .set_antenna = ieee80211_set_antenna,
3644         .get_antenna = ieee80211_get_antenna,
3645         .set_rekey_data = ieee80211_set_rekey_data,
3646         .tdls_oper = ieee80211_tdls_oper,
3647         .tdls_mgmt = ieee80211_tdls_mgmt,
3648         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3649         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3650         .probe_client = ieee80211_probe_client,
3651         .set_noack_map = ieee80211_set_noack_map,
3652 #ifdef CONFIG_PM
3653         .set_wakeup = ieee80211_set_wakeup,
3654 #endif
3655         .get_channel = ieee80211_cfg_get_channel,
3656         .start_radar_detection = ieee80211_start_radar_detection,
3657         .channel_switch = ieee80211_channel_switch,
3658         .set_qos_map = ieee80211_set_qos_map,
3659         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3660         .add_tx_ts = ieee80211_add_tx_ts,
3661         .del_tx_ts = ieee80211_del_tx_ts,
3662         .start_nan = ieee80211_start_nan,
3663         .stop_nan = ieee80211_stop_nan,
3664         .nan_change_conf = ieee80211_nan_change_conf,
3665         .add_nan_func = ieee80211_add_nan_func,
3666         .del_nan_func = ieee80211_del_nan_func,
3667         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3668 };