net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  *
   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 void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  26                                          struct vif_params *params)
  27 {
  28         bool mu_mimo_groups = false;
  29         bool mu_mimo_follow = false;
  30
  31         if (params->vht_mumimo_groups) {
  32                 u64 membership;
  33
  34                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  35
  36                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  37                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  38                 memcpy(sdata->vif.bss_conf.mu_group.position,
  39                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  40                        WLAN_USER_POSITION_LEN);
  41                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  42                 /* don't care about endianness - just check for 0 */
  43                 memcpy(&membership, params->vht_mumimo_groups,
  44                        WLAN_MEMBERSHIP_LEN);
  45                 mu_mimo_groups = membership != 0;
  46         }
  47
  48         if (params->vht_mumimo_follow_addr) {
  49                 mu_mimo_follow =
  50                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  51                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  52                                 params->vht_mumimo_follow_addr);
  53         }
  54
  55         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  56 }
  57
  58 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  59                                      struct vif_params *params)
  60 {
  61         struct ieee80211_local *local = sdata->local;
  62         struct ieee80211_sub_if_data *monitor_sdata;
  63
  64         /* check flags first */
  65         if (params->flags && ieee80211_sdata_running(sdata)) {
  66                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  67
  68                 /*
  69                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  70                  * MONITOR_FLAG_ACTIVE to be changed while the
  71                  * interface is up.
  72                  * Else we would need to add a lot of cruft
  73                  * to update everything:
  74                  *      cooked_mntrs, monitor and all fif_* counters
  75                  *      reconfigure hardware
  76                  */
  77                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  78                         return -EBUSY;
  79         }
  80
  81         /* also validate MU-MIMO change */
  82         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83
  84         if (!monitor_sdata &&
  85             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  86                 return -EOPNOTSUPP;
  87
  88         /* apply all changes now - no failures allowed */
  89
  90         if (monitor_sdata)
  91                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  92
  93         if (params->flags) {
  94                 if (ieee80211_sdata_running(sdata)) {
  95                         ieee80211_adjust_monitor_flags(sdata, -1);
  96                         sdata->u.mntr.flags = params->flags;
  97                         ieee80211_adjust_monitor_flags(sdata, 1);
  98
  99                         ieee80211_configure_filter(local);
 100                 } else {
 101                         /*
 102                          * Because the interface is down, ieee80211_do_stop
 103                          * and ieee80211_do_open take care of "everything"
 104                          * mentioned in the comment above.
 105                          */
 106                         sdata->u.mntr.flags = params->flags;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 114                                                 const char *name,
 115                                                 unsigned char name_assign_type,
 116                                                 enum nl80211_iftype type,
 117                                                 struct vif_params *params)
 118 {
 119         struct ieee80211_local *local = wiphy_priv(wiphy);
 120         struct wireless_dev *wdev;
 121         struct ieee80211_sub_if_data *sdata;
 122         int err;
 123
 124         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 125         if (err)
 126                 return ERR_PTR(err);
 127
 128         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 129
 130         if (type == NL80211_IFTYPE_MONITOR) {
 131                 err = ieee80211_set_mon_options(sdata, params);
 132                 if (err) {
 133                         ieee80211_if_remove(sdata);
 134                         return NULL;
 135                 }
 136         }
 137
 138         return wdev;
 139 }
 140
 141 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 142 {
 143         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 144
 145         return 0;
 146 }
 147
 148 static int ieee80211_change_iface(struct wiphy *wiphy,
 149                                   struct net_device *dev,
 150                                   enum nl80211_iftype type,
 151                                   struct vif_params *params)
 152 {
 153         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 154         int ret;
 155
 156         ret = ieee80211_if_change_type(sdata, type);
 157         if (ret)
 158                 return ret;
 159
 160         if (type == NL80211_IFTYPE_AP_VLAN &&
 161             params && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION &&
 165                    params && params->use_4addr >= 0) {
 166                 sdata->u.mgd.use_4addr = params->use_4addr;
 167         }
 168
 169         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 170                 ret = ieee80211_set_mon_options(sdata, params);
 171                 if (ret)
 172                         return ret;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 179                                       struct wireless_dev *wdev)
 180 {
 181         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 182         int ret;
 183
 184         mutex_lock(&sdata->local->chanctx_mtx);
 185         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 186         mutex_unlock(&sdata->local->chanctx_mtx);
 187         if (ret < 0)
 188                 return ret;
 189
 190         return ieee80211_do_open(wdev, true);
 191 }
 192
 193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 194                                       struct wireless_dev *wdev)
 195 {
 196         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 197 }
 198
 199 static int ieee80211_start_nan(struct wiphy *wiphy,
 200                                struct wireless_dev *wdev,
 201                                struct cfg80211_nan_conf *conf)
 202 {
 203         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 204         int ret;
 205
 206         mutex_lock(&sdata->local->chanctx_mtx);
 207         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 208         mutex_unlock(&sdata->local->chanctx_mtx);
 209         if (ret < 0)
 210                 return ret;
 211
 212         ret = ieee80211_do_open(wdev, true);
 213         if (ret)
 214                 return ret;
 215
 216         ret = drv_start_nan(sdata->local, sdata, conf);
 217         if (ret)
 218                 ieee80211_sdata_stop(sdata);
 219
 220         sdata->u.nan.conf = *conf;
 221
 222         return ret;
 223 }
 224
 225 static void ieee80211_stop_nan(struct wiphy *wiphy,
 226                                struct wireless_dev *wdev)
 227 {
 228         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 229
 230         drv_stop_nan(sdata->local, sdata);
 231         ieee80211_sdata_stop(sdata);
 232 }
 233
 234 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 235                                      struct wireless_dev *wdev,
 236                                      struct cfg80211_nan_conf *conf,
 237                                      u32 changes)
 238 {
 239         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 240         struct cfg80211_nan_conf new_conf;
 241         int ret = 0;
 242
 243         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 244                 return -EOPNOTSUPP;
 245
 246         if (!ieee80211_sdata_running(sdata))
 247                 return -ENETDOWN;
 248
 249         new_conf = sdata->u.nan.conf;
 250
 251         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 252                 new_conf.master_pref = conf->master_pref;
 253
 254         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 255                 new_conf.bands = conf->bands;
 256
 257         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 258         if (!ret)
 259                 sdata->u.nan.conf = new_conf;
 260
 261         return ret;
 262 }
 263
 264 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 265                                   struct wireless_dev *wdev,
 266                                   struct cfg80211_nan_func *nan_func)
 267 {
 268         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 269         int ret;
 270
 271         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 272                 return -EOPNOTSUPP;
 273
 274         if (!ieee80211_sdata_running(sdata))
 275                 return -ENETDOWN;
 276
 277         spin_lock_bh(&sdata->u.nan.func_lock);
 278
 279         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 280                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 281                         GFP_ATOMIC);
 282         spin_unlock_bh(&sdata->u.nan.func_lock);
 283
 284         if (ret < 0)
 285                 return ret;
 286
 287         nan_func->instance_id = ret;
 288
 289         WARN_ON(nan_func->instance_id == 0);
 290
 291         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 292         if (ret) {
 293                 spin_lock_bh(&sdata->u.nan.func_lock);
 294                 idr_remove(&sdata->u.nan.function_inst_ids,
 295                            nan_func->instance_id);
 296                 spin_unlock_bh(&sdata->u.nan.func_lock);
 297         }
 298
 299         return ret;
 300 }
 301
 302 static struct cfg80211_nan_func *
 303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 304                                   u64 cookie)
 305 {
 306         struct cfg80211_nan_func *func;
 307         int id;
 308
 309         lockdep_assert_held(&sdata->u.nan.func_lock);
 310
 311         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 312                 if (func->cookie == cookie)
 313                         return func;
 314         }
 315
 316         return NULL;
 317 }
 318
 319 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 320                                   struct wireless_dev *wdev, u64 cookie)
 321 {
 322         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 323         struct cfg80211_nan_func *func;
 324         u8 instance_id = 0;
 325
 326         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 327             !ieee80211_sdata_running(sdata))
 328                 return;
 329
 330         spin_lock_bh(&sdata->u.nan.func_lock);
 331
 332         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 333         if (func)
 334                 instance_id = func->instance_id;
 335
 336         spin_unlock_bh(&sdata->u.nan.func_lock);
 337
 338         if (instance_id)
 339                 drv_del_nan_func(sdata->local, sdata, instance_id);
 340 }
 341
 342 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 343                                   struct net_device *dev,
 344                                   u16 noack_map)
 345 {
 346         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 347
 348         sdata->noack_map = noack_map;
 349
 350         ieee80211_check_fast_xmit_iface(sdata);
 351
 352         return 0;
 353 }
 354
 355 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 356                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 357                              struct key_params *params)
 358 {
 359         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 360         struct ieee80211_local *local = sdata->local;
 361         struct sta_info *sta = NULL;
 362         const struct ieee80211_cipher_scheme *cs = NULL;
 363         struct ieee80211_key *key;
 364         int err;
 365
 366         if (!ieee80211_sdata_running(sdata))
 367                 return -ENETDOWN;
 368
 369         /* reject WEP and TKIP keys if WEP failed to initialize */
 370         switch (params->cipher) {
 371         case WLAN_CIPHER_SUITE_WEP40:
 372         case WLAN_CIPHER_SUITE_TKIP:
 373         case WLAN_CIPHER_SUITE_WEP104:
 374                 if (IS_ERR(local->wep_tx_tfm))
 375                         return -EINVAL;
 376                 break;
 377         case WLAN_CIPHER_SUITE_CCMP:
 378         case WLAN_CIPHER_SUITE_CCMP_256:
 379         case WLAN_CIPHER_SUITE_AES_CMAC:
 380         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 383         case WLAN_CIPHER_SUITE_GCMP:
 384         case WLAN_CIPHER_SUITE_GCMP_256:
 385                 break;
 386         default:
 387                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 388                 break;
 389         }
 390
 391         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 392                                   params->key, params->seq_len, params->seq,
 393                                   cs);
 394         if (IS_ERR(key))
 395                 return PTR_ERR(key);
 396
 397         if (pairwise)
 398                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 399
 400         mutex_lock(&local->sta_mtx);
 401
 402         if (mac_addr) {
 403                 sta = sta_info_get_bss(sdata, mac_addr);
 404                 /*
 405                  * The ASSOC test makes sure the driver is ready to
 406                  * receive the key. When wpa_supplicant has roamed
 407                  * using FT, it attempts to set the key before
 408                  * association has completed, this rejects that attempt
 409                  * so it will set the key again after association.
 410                  *
 411                  * TODO: accept the key if we have a station entry and
 412                  *       add it to the device after the station.
 413                  */
 414                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 415                         ieee80211_key_free_unused(key);
 416                         err = -ENOENT;
 417                         goto out_unlock;
 418                 }
 419         }
 420
 421         switch (sdata->vif.type) {
 422         case NL80211_IFTYPE_STATION:
 423                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 424                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 425                 break;
 426         case NL80211_IFTYPE_AP:
 427         case NL80211_IFTYPE_AP_VLAN:
 428                 /* Keys without a station are used for TX only */
 429                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 430                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 431                 break;
 432         case NL80211_IFTYPE_ADHOC:
 433                 /* no MFP (yet) */
 434                 break;
 435         case NL80211_IFTYPE_MESH_POINT:
 436 #ifdef CONFIG_MAC80211_MESH
 437                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 438                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 439                 break;
 440 #endif
 441         case NL80211_IFTYPE_WDS:
 442         case NL80211_IFTYPE_MONITOR:
 443         case NL80211_IFTYPE_P2P_DEVICE:
 444         case NL80211_IFTYPE_NAN:
 445         case NL80211_IFTYPE_UNSPECIFIED:
 446         case NUM_NL80211_IFTYPES:
 447         case NL80211_IFTYPE_P2P_CLIENT:
 448         case NL80211_IFTYPE_P2P_GO:
 449         case NL80211_IFTYPE_OCB:
 450                 /* shouldn't happen */
 451                 WARN_ON_ONCE(1);
 452                 break;
 453         }
 454
 455         if (sta)
 456                 sta->cipher_scheme = cs;
 457
 458         err = ieee80211_key_link(key, sdata, sta);
 459
 460  out_unlock:
 461         mutex_unlock(&local->sta_mtx);
 462
 463         return err;
 464 }
 465
 466 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 467                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 468 {
 469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470         struct ieee80211_local *local = sdata->local;
 471         struct sta_info *sta;
 472         struct ieee80211_key *key = NULL;
 473         int ret;
 474
 475         mutex_lock(&local->sta_mtx);
 476         mutex_lock(&local->key_mtx);
 477
 478         if (mac_addr) {
 479                 ret = -ENOENT;
 480
 481                 sta = sta_info_get_bss(sdata, mac_addr);
 482                 if (!sta)
 483                         goto out_unlock;
 484
 485                 if (pairwise)
 486                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 487                 else
 488                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 489         } else
 490                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 491
 492         if (!key) {
 493                 ret = -ENOENT;
 494                 goto out_unlock;
 495         }
 496
 497         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 498
 499         ret = 0;
 500  out_unlock:
 501         mutex_unlock(&local->key_mtx);
 502         mutex_unlock(&local->sta_mtx);
 503
 504         return ret;
 505 }
 506
 507 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 508                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 509                              void *cookie,
 510                              void (*callback)(void *cookie,
 511                                               struct key_params *params))
 512 {
 513         struct ieee80211_sub_if_data *sdata;
 514         struct sta_info *sta = NULL;
 515         u8 seq[6] = {0};
 516         struct key_params params;
 517         struct ieee80211_key *key = NULL;
 518         u64 pn64;
 519         u32 iv32;
 520         u16 iv16;
 521         int err = -ENOENT;
 522         struct ieee80211_key_seq kseq = {};
 523
 524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 525
 526         rcu_read_lock();
 527
 528         if (mac_addr) {
 529                 sta = sta_info_get_bss(sdata, mac_addr);
 530                 if (!sta)
 531                         goto out;
 532
 533                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 534                         key = rcu_dereference(sta->ptk[key_idx]);
 535                 else if (!pairwise &&
 536                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 537                         key = rcu_dereference(sta->gtk[key_idx]);
 538         } else
 539                 key = rcu_dereference(sdata->keys[key_idx]);
 540
 541         if (!key)
 542                 goto out;
 543
 544         memset(&params, 0, sizeof(params));
 545
 546         params.cipher = key->conf.cipher;
 547
 548         switch (key->conf.cipher) {
 549         case WLAN_CIPHER_SUITE_TKIP:
 550                 pn64 = atomic64_read(&key->conf.tx_pn);
 551                 iv32 = TKIP_PN_TO_IV32(pn64);
 552                 iv16 = TKIP_PN_TO_IV16(pn64);
 553
 554                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 555                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 556                         drv_get_key_seq(sdata->local, key, &kseq);
 557                         iv32 = kseq.tkip.iv32;
 558                         iv16 = kseq.tkip.iv16;
 559                 }
 560
 561                 seq[0] = iv16 & 0xff;
 562                 seq[1] = (iv16 >> 8) & 0xff;
 563                 seq[2] = iv32 & 0xff;
 564                 seq[3] = (iv32 >> 8) & 0xff;
 565                 seq[4] = (iv32 >> 16) & 0xff;
 566                 seq[5] = (iv32 >> 24) & 0xff;
 567                 params.seq = seq;
 568                 params.seq_len = 6;
 569                 break;
 570         case WLAN_CIPHER_SUITE_CCMP:
 571         case WLAN_CIPHER_SUITE_CCMP_256:
 572         case WLAN_CIPHER_SUITE_AES_CMAC:
 573         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 574                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 575                              offsetof(typeof(kseq), aes_cmac));
 576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 579                              offsetof(typeof(kseq), aes_gmac));
 580         case WLAN_CIPHER_SUITE_GCMP:
 581         case WLAN_CIPHER_SUITE_GCMP_256:
 582                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 583                              offsetof(typeof(kseq), gcmp));
 584
 585                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 586                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 587                         drv_get_key_seq(sdata->local, key, &kseq);
 588                         memcpy(seq, kseq.ccmp.pn, 6);
 589                 } else {
 590                         pn64 = atomic64_read(&key->conf.tx_pn);
 591                         seq[0] = pn64;
 592                         seq[1] = pn64 >> 8;
 593                         seq[2] = pn64 >> 16;
 594                         seq[3] = pn64 >> 24;
 595                         seq[4] = pn64 >> 32;
 596                         seq[5] = pn64 >> 40;
 597                 }
 598                 params.seq = seq;
 599                 params.seq_len = 6;
 600                 break;
 601         default:
 602                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 603                         break;
 604                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 605                         break;
 606                 drv_get_key_seq(sdata->local, key, &kseq);
 607                 params.seq = kseq.hw.seq;
 608                 params.seq_len = kseq.hw.seq_len;
 609                 break;
 610         }
 611
 612         params.key = key->conf.key;
 613         params.key_len = key->conf.keylen;
 614
 615         callback(cookie, &params);
 616         err = 0;
 617
 618  out:
 619         rcu_read_unlock();
 620         return err;
 621 }
 622
 623 static int ieee80211_config_default_key(struct wiphy *wiphy,
 624                                         struct net_device *dev,
 625                                         u8 key_idx, bool uni,
 626                                         bool multi)
 627 {
 628         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 629
 630         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 631
 632         return 0;
 633 }
 634
 635 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 636                                              struct net_device *dev,
 637                                              u8 key_idx)
 638 {
 639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 640
 641         ieee80211_set_default_mgmt_key(sdata, key_idx);
 642
 643         return 0;
 644 }
 645
 646 void sta_set_rate_info_tx(struct sta_info *sta,
 647                           const struct ieee80211_tx_rate *rate,
 648                           struct rate_info *rinfo)
 649 {
 650         rinfo->flags = 0;
 651         if (rate->flags & IEEE80211_TX_RC_MCS) {
 652                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 653                 rinfo->mcs = rate->idx;
 654         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 655                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 656                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 657                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 658         } else {
 659                 struct ieee80211_supported_band *sband;
 660                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 661                 u16 brate;
 662
 663                 sband = ieee80211_get_sband(sta->sdata);
 664                 WARN_ON_ONCE(sband && !sband->bitrates);
 665                 if (sband && sband->bitrates) {
 666                         brate = sband->bitrates[rate->idx].bitrate;
 667                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 668                 }
 669         }
 670         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 671                 rinfo->bw = RATE_INFO_BW_40;
 672         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 673                 rinfo->bw = RATE_INFO_BW_80;
 674         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 675                 rinfo->bw = RATE_INFO_BW_160;
 676         else
 677                 rinfo->bw = RATE_INFO_BW_20;
 678         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 679                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 680 }
 681
 682 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 683                                   int idx, u8 *mac, struct station_info *sinfo)
 684 {
 685         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 686         struct ieee80211_local *local = sdata->local;
 687         struct sta_info *sta;
 688         int ret = -ENOENT;
 689
 690         mutex_lock(&local->sta_mtx);
 691
 692         sta = sta_info_get_by_idx(sdata, idx);
 693         if (sta) {
 694                 ret = 0;
 695                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 696                 sta_set_sinfo(sta, sinfo);
 697         }
 698
 699         mutex_unlock(&local->sta_mtx);
 700
 701         return ret;
 702 }
 703
 704 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 705                                  int idx, struct survey_info *survey)
 706 {
 707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 708
 709         return drv_get_survey(local, idx, survey);
 710 }
 711
 712 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 713                                  const u8 *mac, struct station_info *sinfo)
 714 {
 715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 716         struct ieee80211_local *local = sdata->local;
 717         struct sta_info *sta;
 718         int ret = -ENOENT;
 719
 720         mutex_lock(&local->sta_mtx);
 721
 722         sta = sta_info_get_bss(sdata, mac);
 723         if (sta) {
 724                 ret = 0;
 725                 sta_set_sinfo(sta, sinfo);
 726         }
 727
 728         mutex_unlock(&local->sta_mtx);
 729
 730         return ret;
 731 }
 732
 733 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 734                                          struct cfg80211_chan_def *chandef)
 735 {
 736         struct ieee80211_local *local = wiphy_priv(wiphy);
 737         struct ieee80211_sub_if_data *sdata;
 738         int ret = 0;
 739
 740         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 741                 return 0;
 742
 743         mutex_lock(&local->mtx);
 744         if (local->use_chanctx) {
 745                 sdata = rtnl_dereference(local->monitor_sdata);
 746                 if (sdata) {
 747                         ieee80211_vif_release_channel(sdata);
 748                         ret = ieee80211_vif_use_channel(sdata, chandef,
 749                                         IEEE80211_CHANCTX_EXCLUSIVE);
 750                 }
 751         } else if (local->open_count == local->monitors) {
 752                 local->_oper_chandef = *chandef;
 753                 ieee80211_hw_config(local, 0);
 754         }
 755
 756         if (ret == 0)
 757                 local->monitor_chandef = *chandef;
 758         mutex_unlock(&local->mtx);
 759
 760         return ret;
 761 }
 762
 763 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 764                                     const u8 *resp, size_t resp_len,
 765                                     const struct ieee80211_csa_settings *csa)
 766 {
 767         struct probe_resp *new, *old;
 768
 769         if (!resp || !resp_len)
 770                 return 1;
 771
 772         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 773
 774         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 775         if (!new)
 776                 return -ENOMEM;
 777
 778         new->len = resp_len;
 779         memcpy(new->data, resp, resp_len);
 780
 781         if (csa)
 782                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 783                        csa->n_counter_offsets_presp *
 784                        sizeof(new->csa_counter_offsets[0]));
 785
 786         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 787         if (old)
 788                 kfree_rcu(old, rcu_head);
 789
 790         return 0;
 791 }
 792
 793 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 794                                    struct cfg80211_beacon_data *params,
 795                                    const struct ieee80211_csa_settings *csa)
 796 {
 797         struct beacon_data *new, *old;
 798         int new_head_len, new_tail_len;
 799         int size, err;
 800         u32 changed = BSS_CHANGED_BEACON;
 801
 802         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 803
 804
 805         /* Need to have a beacon head if we don't have one yet */
 806         if (!params->head && !old)
 807                 return -EINVAL;
 808
 809         /* new or old head? */
 810         if (params->head)
 811                 new_head_len = params->head_len;
 812         else
 813                 new_head_len = old->head_len;
 814
 815         /* new or old tail? */
 816         if (params->tail || !old)
 817                 /* params->tail_len will be zero for !params->tail */
 818                 new_tail_len = params->tail_len;
 819         else
 820                 new_tail_len = old->tail_len;
 821
 822         size = sizeof(*new) + new_head_len + new_tail_len;
 823
 824         new = kzalloc(size, GFP_KERNEL);
 825         if (!new)
 826                 return -ENOMEM;
 827
 828         /* start filling the new info now */
 829
 830         /*
 831          * pointers go into the block we allocated,
 832          * memory is | beacon_data | head | tail |
 833          */
 834         new->head = ((u8 *) new) + sizeof(*new);
 835         new->tail = new->head + new_head_len;
 836         new->head_len = new_head_len;
 837         new->tail_len = new_tail_len;
 838
 839         if (csa) {
 840                 new->csa_current_counter = csa->count;
 841                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 842                        csa->n_counter_offsets_beacon *
 843                        sizeof(new->csa_counter_offsets[0]));
 844         }
 845
 846         /* copy in head */
 847         if (params->head)
 848                 memcpy(new->head, params->head, new_head_len);
 849         else
 850                 memcpy(new->head, old->head, new_head_len);
 851
 852         /* copy in optional tail */
 853         if (params->tail)
 854                 memcpy(new->tail, params->tail, new_tail_len);
 855         else
 856                 if (old)
 857                         memcpy(new->tail, old->tail, new_tail_len);
 858
 859         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 860                                        params->probe_resp_len, csa);
 861         if (err < 0)
 862                 return err;
 863         if (err == 0)
 864                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 865
 866         rcu_assign_pointer(sdata->u.ap.beacon, new);
 867
 868         if (old)
 869                 kfree_rcu(old, rcu_head);
 870
 871         return changed;
 872 }
 873
 874 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 875                               struct cfg80211_ap_settings *params)
 876 {
 877         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 878         struct ieee80211_local *local = sdata->local;
 879         struct beacon_data *old;
 880         struct ieee80211_sub_if_data *vlan;
 881         u32 changed = BSS_CHANGED_BEACON_INT |
 882                       BSS_CHANGED_BEACON_ENABLED |
 883                       BSS_CHANGED_BEACON |
 884                       BSS_CHANGED_SSID |
 885                       BSS_CHANGED_P2P_PS |
 886                       BSS_CHANGED_TXPOWER;
 887         int err;
 888         int prev_beacon_int;
 889
 890         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 891         if (old)
 892                 return -EALREADY;
 893
 894         switch (params->smps_mode) {
 895         case NL80211_SMPS_OFF:
 896                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 897                 break;
 898         case NL80211_SMPS_STATIC:
 899                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 900                 break;
 901         case NL80211_SMPS_DYNAMIC:
 902                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 903                 break;
 904         default:
 905                 return -EINVAL;
 906         }
 907         sdata->u.ap.req_smps = sdata->smps_mode;
 908
 909         sdata->needed_rx_chains = sdata->local->rx_chains;
 910
 911         prev_beacon_int = sdata->vif.bss_conf.beacon_int;
 912         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 913
 914         mutex_lock(&local->mtx);
 915         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 916                                         IEEE80211_CHANCTX_SHARED);
 917         if (!err)
 918                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 919         mutex_unlock(&local->mtx);
 920         if (err) {
 921                 sdata->vif.bss_conf.beacon_int = prev_beacon_int;
 922                 return err;
 923         }
 924
 925         /*
 926          * Apply control port protocol, this allows us to
 927          * not encrypt dynamic WEP control frames.
 928          */
 929         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 930         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 931         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 932                                                         &params->crypto,
 933                                                         sdata->vif.type);
 934
 935         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 936                 vlan->control_port_protocol =
 937                         params->crypto.control_port_ethertype;
 938                 vlan->control_port_no_encrypt =
 939                         params->crypto.control_port_no_encrypt;
 940                 vlan->encrypt_headroom =
 941                         ieee80211_cs_headroom(sdata->local,
 942                                               &params->crypto,
 943                                               vlan->vif.type);
 944         }
 945
 946         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 947         sdata->vif.bss_conf.enable_beacon = true;
 948         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 949
 950         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 951         if (params->ssid_len)
 952                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 953                        params->ssid_len);
 954         sdata->vif.bss_conf.hidden_ssid =
 955                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 956
 957         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 958                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 959         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 960                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 961         if (params->p2p_opp_ps)
 962                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 963                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 964
 965         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 966         if (err < 0) {
 967                 ieee80211_vif_release_channel(sdata);
 968                 return err;
 969         }
 970         changed |= err;
 971
 972         err = drv_start_ap(sdata->local, sdata);
 973         if (err) {
 974                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 975
 976                 if (old)
 977                         kfree_rcu(old, rcu_head);
 978                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 979                 ieee80211_vif_release_channel(sdata);
 980                 return err;
 981         }
 982
 983         ieee80211_recalc_dtim(local, sdata);
 984         ieee80211_bss_info_change_notify(sdata, changed);
 985
 986         netif_carrier_on(dev);
 987         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 988                 netif_carrier_on(vlan->dev);
 989
 990         return 0;
 991 }
 992
 993 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 994                                    struct cfg80211_beacon_data *params)
 995 {
 996         struct ieee80211_sub_if_data *sdata;
 997         struct beacon_data *old;
 998         int err;
 999
1000         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001         sdata_assert_lock(sdata);
1002
1003         /* don't allow changing the beacon while CSA is in place - offset
1004          * of channel switch counter may change
1005          */
1006         if (sdata->vif.csa_active)
1007                 return -EBUSY;
1008
1009         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1010         if (!old)
1011                 return -ENOENT;
1012
1013         err = ieee80211_assign_beacon(sdata, params, NULL);
1014         if (err < 0)
1015                 return err;
1016         ieee80211_bss_info_change_notify(sdata, err);
1017         return 0;
1018 }
1019
1020 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1021 {
1022         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1023         struct ieee80211_sub_if_data *vlan;
1024         struct ieee80211_local *local = sdata->local;
1025         struct beacon_data *old_beacon;
1026         struct probe_resp *old_probe_resp;
1027         struct cfg80211_chan_def chandef;
1028
1029         sdata_assert_lock(sdata);
1030
1031         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1032         if (!old_beacon)
1033                 return -ENOENT;
1034         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1035
1036         /* abort any running channel switch */
1037         mutex_lock(&local->mtx);
1038         sdata->vif.csa_active = false;
1039         if (sdata->csa_block_tx) {
1040                 ieee80211_wake_vif_queues(local, sdata,
1041                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1042                 sdata->csa_block_tx = false;
1043         }
1044
1045         mutex_unlock(&local->mtx);
1046
1047         kfree(sdata->u.ap.next_beacon);
1048         sdata->u.ap.next_beacon = NULL;
1049
1050         /* turn off carrier for this interface and dependent VLANs */
1051         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1052                 netif_carrier_off(vlan->dev);
1053         netif_carrier_off(dev);
1054
1055         /* remove beacon and probe response */
1056         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1057         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1058         kfree_rcu(old_beacon, rcu_head);
1059         if (old_probe_resp)
1060                 kfree_rcu(old_probe_resp, rcu_head);
1061         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1062
1063         __sta_info_flush(sdata, true);
1064         ieee80211_free_keys(sdata, true);
1065
1066         sdata->vif.bss_conf.enable_beacon = false;
1067         sdata->vif.bss_conf.ssid_len = 0;
1068         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1069         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1070
1071         if (sdata->wdev.cac_started) {
1072                 chandef = sdata->vif.bss_conf.chandef;
1073                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1074                 cfg80211_cac_event(sdata->dev, &chandef,
1075                                    NL80211_RADAR_CAC_ABORTED,
1076                                    GFP_KERNEL);
1077         }
1078
1079         drv_stop_ap(sdata->local, sdata);
1080
1081         /* free all potentially still buffered bcast frames */
1082         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1083         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1084
1085         mutex_lock(&local->mtx);
1086         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1087         ieee80211_vif_release_channel(sdata);
1088         mutex_unlock(&local->mtx);
1089
1090         return 0;
1091 }
1092
1093 static int sta_apply_auth_flags(struct ieee80211_local *local,
1094                                 struct sta_info *sta,
1095                                 u32 mask, u32 set)
1096 {
1097         int ret;
1098
1099         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1100             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1101             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1102                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1103                 if (ret)
1104                         return ret;
1105         }
1106
1107         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1108             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1109             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1110                 /*
1111                  * When peer becomes associated, init rate control as
1112                  * well. Some drivers require rate control initialized
1113                  * before drv_sta_state() is called.
1114                  */
1115                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1116                         rate_control_rate_init(sta);
1117
1118                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1119                 if (ret)
1120                         return ret;
1121         }
1122
1123         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1124                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1125                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1126                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1127                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1128                 else
1129                         ret = 0;
1130                 if (ret)
1131                         return ret;
1132         }
1133
1134         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1135             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1136             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1137                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1138                 if (ret)
1139                         return ret;
1140         }
1141
1142         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1143             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1144             test_sta_flag(sta, WLAN_STA_AUTH)) {
1145                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1146                 if (ret)
1147                         return ret;
1148         }
1149
1150         return 0;
1151 }
1152
1153 static void sta_apply_mesh_params(struct ieee80211_local *local,
1154                                   struct sta_info *sta,
1155                                   struct station_parameters *params)
1156 {
1157 #ifdef CONFIG_MAC80211_MESH
1158         struct ieee80211_sub_if_data *sdata = sta->sdata;
1159         u32 changed = 0;
1160
1161         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1162                 switch (params->plink_state) {
1163                 case NL80211_PLINK_ESTAB:
1164                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1165                                 changed = mesh_plink_inc_estab_count(sdata);
1166                         sta->mesh->plink_state = params->plink_state;
1167                         sta->mesh->aid = params->peer_aid;
1168
1169                         ieee80211_mps_sta_status_update(sta);
1170                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1171                                       sdata->u.mesh.mshcfg.power_mode);
1172                         break;
1173                 case NL80211_PLINK_LISTEN:
1174                 case NL80211_PLINK_BLOCKED:
1175                 case NL80211_PLINK_OPN_SNT:
1176                 case NL80211_PLINK_OPN_RCVD:
1177                 case NL80211_PLINK_CNF_RCVD:
1178                 case NL80211_PLINK_HOLDING:
1179                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1180                                 changed = mesh_plink_dec_estab_count(sdata);
1181                         sta->mesh->plink_state = params->plink_state;
1182
1183                         ieee80211_mps_sta_status_update(sta);
1184                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1185                                         NL80211_MESH_POWER_UNKNOWN);
1186                         break;
1187                 default:
1188                         /*  nothing  */
1189                         break;
1190                 }
1191         }
1192
1193         switch (params->plink_action) {
1194         case NL80211_PLINK_ACTION_NO_ACTION:
1195                 /* nothing */
1196                 break;
1197         case NL80211_PLINK_ACTION_OPEN:
1198                 changed |= mesh_plink_open(sta);
1199                 break;
1200         case NL80211_PLINK_ACTION_BLOCK:
1201                 changed |= mesh_plink_block(sta);
1202                 break;
1203         }
1204
1205         if (params->local_pm)
1206                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1207                                                           params->local_pm);
1208
1209         ieee80211_mbss_info_change_notify(sdata, changed);
1210 #endif
1211 }
1212
1213 static int sta_apply_parameters(struct ieee80211_local *local,
1214                                 struct sta_info *sta,
1215                                 struct station_parameters *params)
1216 {
1217         int ret = 0;
1218         struct ieee80211_supported_band *sband;
1219         struct ieee80211_sub_if_data *sdata = sta->sdata;
1220         u32 mask, set;
1221
1222         sband = ieee80211_get_sband(sdata);
1223         if (!sband)
1224                 return -EINVAL;
1225
1226         mask = params->sta_flags_mask;
1227         set = params->sta_flags_set;
1228
1229         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1230                 /*
1231                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1232                  * API but must follow AUTHENTICATED for driver state.
1233                  */
1234                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1235                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1236                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1237                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1238         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1239                 /*
1240                  * TDLS -- everything follows authorized, but
1241                  * only becoming authorized is possible, not
1242                  * going back
1243                  */
1244                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1245                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1246                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1247                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1248                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1249                 }
1250         }
1251
1252         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1253             local->hw.queues >= IEEE80211_NUM_ACS)
1254                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1255
1256         /* auth flags will be set later for TDLS,
1257          * and for unassociated stations that move to assocaited */
1258         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1259             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1260               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1261                 ret = sta_apply_auth_flags(local, sta, mask, set);
1262                 if (ret)
1263                         return ret;
1264         }
1265
1266         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1267                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1268                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1269                 else
1270                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1274                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1275                 if (set & BIT(NL80211_STA_FLAG_MFP))
1276                         set_sta_flag(sta, WLAN_STA_MFP);
1277                 else
1278                         clear_sta_flag(sta, WLAN_STA_MFP);
1279         }
1280
1281         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1282                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1283                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1284                 else
1285                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1286         }
1287
1288         /* mark TDLS channel switch support, if the AP allows it */
1289         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1290             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1291             params->ext_capab_len >= 4 &&
1292             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1293                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1294
1295         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1296             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1297             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1298             params->ext_capab_len >= 8 &&
1299             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1300                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1301
1302         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1303                 sta->sta.uapsd_queues = params->uapsd_queues;
1304                 sta->sta.max_sp = params->max_sp;
1305         }
1306
1307         /* The sender might not have sent the last bit, consider it to be 0 */
1308         if (params->ext_capab_len >= 8) {
1309                 u8 val = (params->ext_capab[7] &
1310                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1311
1312                 /* we did get all the bits, take the MSB as well */
1313                 if (params->ext_capab_len >= 9) {
1314                         u8 val_msb = params->ext_capab[8] &
1315                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1316                         val_msb <<= 1;
1317                         val |= val_msb;
1318                 }
1319
1320                 switch (val) {
1321                 case 1:
1322                         sta->sta.max_amsdu_subframes = 32;
1323                         break;
1324                 case 2:
1325                         sta->sta.max_amsdu_subframes = 16;
1326                         break;
1327                 case 3:
1328                         sta->sta.max_amsdu_subframes = 8;
1329                         break;
1330                 default:
1331                         sta->sta.max_amsdu_subframes = 0;
1332                 }
1333         }
1334
1335         /*
1336          * cfg80211 validates this (1-2007) and allows setting the AID
1337          * only when creating a new station entry
1338          */
1339         if (params->aid)
1340                 sta->sta.aid = params->aid;
1341
1342         /*
1343          * Some of the following updates would be racy if called on an
1344          * existing station, via ieee80211_change_station(). However,
1345          * all such changes are rejected by cfg80211 except for updates
1346          * changing the supported rates on an existing but not yet used
1347          * TDLS peer.
1348          */
1349
1350         if (params->listen_interval >= 0)
1351                 sta->listen_interval = params->listen_interval;
1352
1353         if (params->supported_rates) {
1354                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1355                                          sband, params->supported_rates,
1356                                          params->supported_rates_len,
1357                                          &sta->sta.supp_rates[sband->band]);
1358         }
1359
1360         if (params->ht_capa)
1361                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1362                                                   params->ht_capa, sta);
1363
1364         /* VHT can override some HT caps such as the A-MSDU max length */
1365         if (params->vht_capa)
1366                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1367                                                     params->vht_capa, sta);
1368
1369         if (params->opmode_notif_used) {
1370                 /* returned value is only needed for rc update, but the
1371                  * rc isn't initialized here yet, so ignore it
1372                  */
1373                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1374                                               sband->band);
1375         }
1376
1377         if (params->support_p2p_ps >= 0)
1378                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1379
1380         if (ieee80211_vif_is_mesh(&sdata->vif))
1381                 sta_apply_mesh_params(local, sta, params);
1382
1383         /* set the STA state after all sta info from usermode has been set */
1384         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1385             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1386                 ret = sta_apply_auth_flags(local, sta, mask, set);
1387                 if (ret)
1388                         return ret;
1389         }
1390
1391         return 0;
1392 }
1393
1394 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1395                                  const u8 *mac,
1396                                  struct station_parameters *params)
1397 {
1398         struct ieee80211_local *local = wiphy_priv(wiphy);
1399         struct sta_info *sta;
1400         struct ieee80211_sub_if_data *sdata;
1401         int err;
1402
1403         if (params->vlan) {
1404                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1405
1406                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1407                     sdata->vif.type != NL80211_IFTYPE_AP)
1408                         return -EINVAL;
1409         } else
1410                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1411
1412         if (ether_addr_equal(mac, sdata->vif.addr))
1413                 return -EINVAL;
1414
1415         if (is_multicast_ether_addr(mac))
1416                 return -EINVAL;
1417
1418         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1419             sdata->vif.type == NL80211_IFTYPE_STATION &&
1420             !sdata->u.mgd.associated)
1421                 return -EINVAL;
1422
1423         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1424         if (!sta)
1425                 return -ENOMEM;
1426
1427         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1428                 sta->sta.tdls = true;
1429
1430         err = sta_apply_parameters(local, sta, params);
1431         if (err) {
1432                 sta_info_free(local, sta);
1433                 return err;
1434         }
1435
1436         /*
1437          * for TDLS and for unassociated station, rate control should be
1438          * initialized only when rates are known and station is marked
1439          * authorized/associated
1440          */
1441         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1442             test_sta_flag(sta, WLAN_STA_ASSOC))
1443                 rate_control_rate_init(sta);
1444
1445         err = sta_info_insert_rcu(sta);
1446         if (err) {
1447                 rcu_read_unlock();
1448                 return err;
1449         }
1450
1451         rcu_read_unlock();
1452
1453         return 0;
1454 }
1455
1456 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1457                                  struct station_del_parameters *params)
1458 {
1459         struct ieee80211_sub_if_data *sdata;
1460
1461         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1462
1463         if (params->mac)
1464                 return sta_info_destroy_addr_bss(sdata, params->mac);
1465
1466         sta_info_flush(sdata);
1467         return 0;
1468 }
1469
1470 static int ieee80211_change_station(struct wiphy *wiphy,
1471                                     struct net_device *dev, const u8 *mac,
1472                                     struct station_parameters *params)
1473 {
1474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475         struct ieee80211_local *local = wiphy_priv(wiphy);
1476         struct sta_info *sta;
1477         struct ieee80211_sub_if_data *vlansdata;
1478         enum cfg80211_station_type statype;
1479         int err;
1480
1481         mutex_lock(&local->sta_mtx);
1482
1483         sta = sta_info_get_bss(sdata, mac);
1484         if (!sta) {
1485                 err = -ENOENT;
1486                 goto out_err;
1487         }
1488
1489         switch (sdata->vif.type) {
1490         case NL80211_IFTYPE_MESH_POINT:
1491                 if (sdata->u.mesh.user_mpm)
1492                         statype = CFG80211_STA_MESH_PEER_USER;
1493                 else
1494                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1495                 break;
1496         case NL80211_IFTYPE_ADHOC:
1497                 statype = CFG80211_STA_IBSS;
1498                 break;
1499         case NL80211_IFTYPE_STATION:
1500                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1501                         statype = CFG80211_STA_AP_STA;
1502                         break;
1503                 }
1504                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1505                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1506                 else
1507                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1508                 break;
1509         case NL80211_IFTYPE_AP:
1510         case NL80211_IFTYPE_AP_VLAN:
1511                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1512                         statype = CFG80211_STA_AP_CLIENT;
1513                 else
1514                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1515                 break;
1516         default:
1517                 err = -EOPNOTSUPP;
1518                 goto out_err;
1519         }
1520
1521         err = cfg80211_check_station_change(wiphy, params, statype);
1522         if (err)
1523                 goto out_err;
1524
1525         if (params->vlan && params->vlan != sta->sdata->dev) {
1526                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1527
1528                 if (params->vlan->ieee80211_ptr->use_4addr) {
1529                         if (vlansdata->u.vlan.sta) {
1530                                 err = -EBUSY;
1531                                 goto out_err;
1532                         }
1533
1534                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1535                         __ieee80211_check_fast_rx_iface(vlansdata);
1536                 }
1537
1538                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1539                     sta->sdata->u.vlan.sta) {
1540                         ieee80211_clear_fast_rx(sta);
1541                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1542                 }
1543
1544                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1545                         ieee80211_vif_dec_num_mcast(sta->sdata);
1546
1547                 sta->sdata = vlansdata;
1548                 ieee80211_check_fast_xmit(sta);
1549
1550                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
1551                         ieee80211_vif_inc_num_mcast(sta->sdata);
1552                         cfg80211_send_layer2_update(sta->sdata->dev,
1553                                                     sta->sta.addr);
1554                 }
1555         }
1556
1557         err = sta_apply_parameters(local, sta, params);
1558         if (err)
1559                 goto out_err;
1560
1561         mutex_unlock(&local->sta_mtx);
1562
1563         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1564              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1565             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1566             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1567             sta_info_tx_streams(sta) != 1) {
1568                 ht_dbg(sta->sdata,
1569                        "%pM just authorized and MIMO capable - update SMPS\n",
1570                        sta->sta.addr);
1571                 ieee80211_send_smps_action(sta->sdata,
1572                         sta->sdata->bss->req_smps,
1573                         sta->sta.addr,
1574                         sta->sdata->vif.bss_conf.bssid);
1575         }
1576
1577         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1578             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1579                 ieee80211_recalc_ps(local);
1580                 ieee80211_recalc_ps_vif(sdata);
1581         }
1582
1583         return 0;
1584 out_err:
1585         mutex_unlock(&local->sta_mtx);
1586         return err;
1587 }
1588
1589 #ifdef CONFIG_MAC80211_MESH
1590 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1591                                const u8 *dst, const u8 *next_hop)
1592 {
1593         struct ieee80211_sub_if_data *sdata;
1594         struct mesh_path *mpath;
1595         struct sta_info *sta;
1596
1597         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1598
1599         rcu_read_lock();
1600         sta = sta_info_get(sdata, next_hop);
1601         if (!sta) {
1602                 rcu_read_unlock();
1603                 return -ENOENT;
1604         }
1605
1606         mpath = mesh_path_add(sdata, dst);
1607         if (IS_ERR(mpath)) {
1608                 rcu_read_unlock();
1609                 return PTR_ERR(mpath);
1610         }
1611
1612         mesh_path_fix_nexthop(mpath, sta);
1613
1614         rcu_read_unlock();
1615         return 0;
1616 }
1617
1618 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1619                                const u8 *dst)
1620 {
1621         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1622
1623         if (dst)
1624                 return mesh_path_del(sdata, dst);
1625
1626         mesh_path_flush_by_iface(sdata);
1627         return 0;
1628 }
1629
1630 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1631                                   const u8 *dst, const u8 *next_hop)
1632 {
1633         struct ieee80211_sub_if_data *sdata;
1634         struct mesh_path *mpath;
1635         struct sta_info *sta;
1636
1637         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1638
1639         rcu_read_lock();
1640
1641         sta = sta_info_get(sdata, next_hop);
1642         if (!sta) {
1643                 rcu_read_unlock();
1644                 return -ENOENT;
1645         }
1646
1647         mpath = mesh_path_lookup(sdata, dst);
1648         if (!mpath) {
1649                 rcu_read_unlock();
1650                 return -ENOENT;
1651         }
1652
1653         mesh_path_fix_nexthop(mpath, sta);
1654
1655         rcu_read_unlock();
1656         return 0;
1657 }
1658
1659 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1660                             struct mpath_info *pinfo)
1661 {
1662         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1663
1664         if (next_hop_sta)
1665                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1666         else
1667                 eth_zero_addr(next_hop);
1668
1669         memset(pinfo, 0, sizeof(*pinfo));
1670
1671         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1672
1673         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1674                         MPATH_INFO_SN |
1675                         MPATH_INFO_METRIC |
1676                         MPATH_INFO_EXPTIME |
1677                         MPATH_INFO_DISCOVERY_TIMEOUT |
1678                         MPATH_INFO_DISCOVERY_RETRIES |
1679                         MPATH_INFO_FLAGS;
1680
1681         pinfo->frame_qlen = mpath->frame_queue.qlen;
1682         pinfo->sn = mpath->sn;
1683         pinfo->metric = mpath->metric;
1684         if (time_before(jiffies, mpath->exp_time))
1685                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1686         pinfo->discovery_timeout =
1687                         jiffies_to_msecs(mpath->discovery_timeout);
1688         pinfo->discovery_retries = mpath->discovery_retries;
1689         if (mpath->flags & MESH_PATH_ACTIVE)
1690                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1691         if (mpath->flags & MESH_PATH_RESOLVING)
1692                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1693         if (mpath->flags & MESH_PATH_SN_VALID)
1694                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1695         if (mpath->flags & MESH_PATH_FIXED)
1696                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1697         if (mpath->flags & MESH_PATH_RESOLVED)
1698                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1699 }
1700
1701 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1702                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1703
1704 {
1705         struct ieee80211_sub_if_data *sdata;
1706         struct mesh_path *mpath;
1707
1708         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1709
1710         rcu_read_lock();
1711         mpath = mesh_path_lookup(sdata, dst);
1712         if (!mpath) {
1713                 rcu_read_unlock();
1714                 return -ENOENT;
1715         }
1716         memcpy(dst, mpath->dst, ETH_ALEN);
1717         mpath_set_pinfo(mpath, next_hop, pinfo);
1718         rcu_read_unlock();
1719         return 0;
1720 }
1721
1722 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1723                                 int idx, u8 *dst, u8 *next_hop,
1724                                 struct mpath_info *pinfo)
1725 {
1726         struct ieee80211_sub_if_data *sdata;
1727         struct mesh_path *mpath;
1728
1729         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731         rcu_read_lock();
1732         mpath = mesh_path_lookup_by_idx(sdata, idx);
1733         if (!mpath) {
1734                 rcu_read_unlock();
1735                 return -ENOENT;
1736         }
1737         memcpy(dst, mpath->dst, ETH_ALEN);
1738         mpath_set_pinfo(mpath, next_hop, pinfo);
1739         rcu_read_unlock();
1740         return 0;
1741 }
1742
1743 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1744                           struct mpath_info *pinfo)
1745 {
1746         memset(pinfo, 0, sizeof(*pinfo));
1747         memcpy(mpp, mpath->mpp, ETH_ALEN);
1748
1749         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1750 }
1751
1752 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1753                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1754
1755 {
1756         struct ieee80211_sub_if_data *sdata;
1757         struct mesh_path *mpath;
1758
1759         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1760
1761         rcu_read_lock();
1762         mpath = mpp_path_lookup(sdata, dst);
1763         if (!mpath) {
1764                 rcu_read_unlock();
1765                 return -ENOENT;
1766         }
1767         memcpy(dst, mpath->dst, ETH_ALEN);
1768         mpp_set_pinfo(mpath, mpp, pinfo);
1769         rcu_read_unlock();
1770         return 0;
1771 }
1772
1773 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1774                               int idx, u8 *dst, u8 *mpp,
1775                               struct mpath_info *pinfo)
1776 {
1777         struct ieee80211_sub_if_data *sdata;
1778         struct mesh_path *mpath;
1779
1780         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1781
1782         rcu_read_lock();
1783         mpath = mpp_path_lookup_by_idx(sdata, idx);
1784         if (!mpath) {
1785                 rcu_read_unlock();
1786                 return -ENOENT;
1787         }
1788         memcpy(dst, mpath->dst, ETH_ALEN);
1789         mpp_set_pinfo(mpath, mpp, pinfo);
1790         rcu_read_unlock();
1791         return 0;
1792 }
1793
1794 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1795                                 struct net_device *dev,
1796                                 struct mesh_config *conf)
1797 {
1798         struct ieee80211_sub_if_data *sdata;
1799         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800
1801         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1802         return 0;
1803 }
1804
1805 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1806 {
1807         return (mask >> (parm-1)) & 0x1;
1808 }
1809
1810 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1811                 const struct mesh_setup *setup)
1812 {
1813         u8 *new_ie;
1814         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1815                                         struct ieee80211_sub_if_data, u.mesh);
1816
1817         /* allocate information elements */
1818         new_ie = NULL;
1819
1820         if (setup->ie_len) {
1821                 new_ie = kmemdup(setup->ie, setup->ie_len,
1822                                 GFP_KERNEL);
1823                 if (!new_ie)
1824                         return -ENOMEM;
1825         }
1826         ifmsh->ie_len = setup->ie_len;
1827         ifmsh->ie = new_ie;
1828
1829         /* now copy the rest of the setup parameters */
1830         ifmsh->mesh_id_len = setup->mesh_id_len;
1831         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1832         ifmsh->mesh_sp_id = setup->sync_method;
1833         ifmsh->mesh_pp_id = setup->path_sel_proto;
1834         ifmsh->mesh_pm_id = setup->path_metric;
1835         ifmsh->user_mpm = setup->user_mpm;
1836         ifmsh->mesh_auth_id = setup->auth_id;
1837         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1838         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1839         if (setup->is_authenticated)
1840                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1841         if (setup->is_secure)
1842                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1843
1844         /* mcast rate setting in Mesh Node */
1845         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1846                                                 sizeof(setup->mcast_rate));
1847         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1848
1849         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1850         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1851
1852         return 0;
1853 }
1854
1855 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1856                                         struct net_device *dev, u32 mask,
1857                                         const struct mesh_config *nconf)
1858 {
1859         struct mesh_config *conf;
1860         struct ieee80211_sub_if_data *sdata;
1861         struct ieee80211_if_mesh *ifmsh;
1862
1863         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1864         ifmsh = &sdata->u.mesh;
1865
1866         /* Set the config options which we are interested in setting */
1867         conf = &(sdata->u.mesh.mshcfg);
1868         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1869                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1870         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1871                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1872         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1873                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1874         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1875                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1876         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1877                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1878         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1879                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1880         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1881                 conf->element_ttl = nconf->element_ttl;
1882         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1883                 if (ifmsh->user_mpm)
1884                         return -EBUSY;
1885                 conf->auto_open_plinks = nconf->auto_open_plinks;
1886         }
1887         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1888                 conf->dot11MeshNbrOffsetMaxNeighbor =
1889                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1890         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1891                 conf->dot11MeshHWMPmaxPREQretries =
1892                         nconf->dot11MeshHWMPmaxPREQretries;
1893         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1894                 conf->path_refresh_time = nconf->path_refresh_time;
1895         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1896                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1897         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1898                 conf->dot11MeshHWMPactivePathTimeout =
1899                         nconf->dot11MeshHWMPactivePathTimeout;
1900         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1901                 conf->dot11MeshHWMPpreqMinInterval =
1902                         nconf->dot11MeshHWMPpreqMinInterval;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1904                 conf->dot11MeshHWMPperrMinInterval =
1905                         nconf->dot11MeshHWMPperrMinInterval;
1906         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1907                            mask))
1908                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1909                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1910         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1911                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1912                 ieee80211_mesh_root_setup(ifmsh);
1913         }
1914         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1915                 /* our current gate announcement implementation rides on root
1916                  * announcements, so require this ifmsh to also be a root node
1917                  * */
1918                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1919                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1920                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1921                         ieee80211_mesh_root_setup(ifmsh);
1922                 }
1923                 conf->dot11MeshGateAnnouncementProtocol =
1924                         nconf->dot11MeshGateAnnouncementProtocol;
1925         }
1926         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1927                 conf->dot11MeshHWMPRannInterval =
1928                         nconf->dot11MeshHWMPRannInterval;
1929         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1930                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1931         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1932                 /* our RSSI threshold implementation is supported only for
1933                  * devices that report signal in dBm.
1934                  */
1935                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1936                         return -ENOTSUPP;
1937                 conf->rssi_threshold = nconf->rssi_threshold;
1938         }
1939         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1940                 conf->ht_opmode = nconf->ht_opmode;
1941                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1942                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1943         }
1944         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1945                 conf->dot11MeshHWMPactivePathToRootTimeout =
1946                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1947         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1948                 conf->dot11MeshHWMProotInterval =
1949                         nconf->dot11MeshHWMProotInterval;
1950         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1951                 conf->dot11MeshHWMPconfirmationInterval =
1952                         nconf->dot11MeshHWMPconfirmationInterval;
1953         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1954                 conf->power_mode = nconf->power_mode;
1955                 ieee80211_mps_local_status_update(sdata);
1956         }
1957         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1958                 conf->dot11MeshAwakeWindowDuration =
1959                         nconf->dot11MeshAwakeWindowDuration;
1960         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1961                 conf->plink_timeout = nconf->plink_timeout;
1962         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1963         return 0;
1964 }
1965
1966 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1967                                const struct mesh_config *conf,
1968                                const struct mesh_setup *setup)
1969 {
1970         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1971         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1972         int err;
1973
1974         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1975         err = copy_mesh_setup(ifmsh, setup);
1976         if (err)
1977                 return err;
1978
1979         /* can mesh use other SMPS modes? */
1980         sdata->smps_mode = IEEE80211_SMPS_OFF;
1981         sdata->needed_rx_chains = sdata->local->rx_chains;
1982
1983         mutex_lock(&sdata->local->mtx);
1984         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1985                                         IEEE80211_CHANCTX_SHARED);
1986         mutex_unlock(&sdata->local->mtx);
1987         if (err)
1988                 return err;
1989
1990         return ieee80211_start_mesh(sdata);
1991 }
1992
1993 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1994 {
1995         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1996
1997         ieee80211_stop_mesh(sdata);
1998         mutex_lock(&sdata->local->mtx);
1999         ieee80211_vif_release_channel(sdata);
2000         kfree(sdata->u.mesh.ie);
2001         mutex_unlock(&sdata->local->mtx);
2002
2003         return 0;
2004 }
2005 #endif
2006
2007 static int ieee80211_change_bss(struct wiphy *wiphy,
2008                                 struct net_device *dev,
2009                                 struct bss_parameters *params)
2010 {
2011         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2012         struct ieee80211_supported_band *sband;
2013         u32 changed = 0;
2014
2015         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2016                 return -ENOENT;
2017
2018         sband = ieee80211_get_sband(sdata);
2019         if (!sband)
2020                 return -EINVAL;
2021
2022         if (params->use_cts_prot >= 0) {
2023                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2024                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2025         }
2026         if (params->use_short_preamble >= 0) {
2027                 sdata->vif.bss_conf.use_short_preamble =
2028                         params->use_short_preamble;
2029                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2030         }
2031
2032         if (!sdata->vif.bss_conf.use_short_slot &&
2033             sband->band == NL80211_BAND_5GHZ) {
2034                 sdata->vif.bss_conf.use_short_slot = true;
2035                 changed |= BSS_CHANGED_ERP_SLOT;
2036         }
2037
2038         if (params->use_short_slot_time >= 0) {
2039                 sdata->vif.bss_conf.use_short_slot =
2040                         params->use_short_slot_time;
2041                 changed |= BSS_CHANGED_ERP_SLOT;
2042         }
2043
2044         if (params->basic_rates) {
2045                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2046                                          wiphy->bands[sband->band],
2047                                          params->basic_rates,
2048                                          params->basic_rates_len,
2049                                          &sdata->vif.bss_conf.basic_rates);
2050                 changed |= BSS_CHANGED_BASIC_RATES;
2051                 ieee80211_check_rate_mask(sdata);
2052         }
2053
2054         if (params->ap_isolate >= 0) {
2055                 if (params->ap_isolate)
2056                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2057                 else
2058                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2059                 ieee80211_check_fast_rx_iface(sdata);
2060         }
2061
2062         if (params->ht_opmode >= 0) {
2063                 sdata->vif.bss_conf.ht_operation_mode =
2064                         (u16) params->ht_opmode;
2065                 changed |= BSS_CHANGED_HT;
2066         }
2067
2068         if (params->p2p_ctwindow >= 0) {
2069                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2070                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2071                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2072                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2073                 changed |= BSS_CHANGED_P2P_PS;
2074         }
2075
2076         if (params->p2p_opp_ps > 0) {
2077                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2078                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2079                 changed |= BSS_CHANGED_P2P_PS;
2080         } else if (params->p2p_opp_ps == 0) {
2081                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2082                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2083                 changed |= BSS_CHANGED_P2P_PS;
2084         }
2085
2086         ieee80211_bss_info_change_notify(sdata, changed);
2087
2088         return 0;
2089 }
2090
2091 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2092                                     struct net_device *dev,
2093                                     struct ieee80211_txq_params *params)
2094 {
2095         struct ieee80211_local *local = wiphy_priv(wiphy);
2096         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2097         struct ieee80211_tx_queue_params p;
2098
2099         if (!local->ops->conf_tx)
2100                 return -EOPNOTSUPP;
2101
2102         if (local->hw.queues < IEEE80211_NUM_ACS)
2103                 return -EOPNOTSUPP;
2104
2105         memset(&p, 0, sizeof(p));
2106         p.aifs = params->aifs;
2107         p.cw_max = params->cwmax;
2108         p.cw_min = params->cwmin;
2109         p.txop = params->txop;
2110
2111         /*
2112          * Setting tx queue params disables u-apsd because it's only
2113          * called in master mode.
2114          */
2115         p.uapsd = false;
2116
2117         sdata->tx_conf[params->ac] = p;
2118         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2119                 wiphy_debug(local->hw.wiphy,
2120                             "failed to set TX queue parameters for AC %d\n",
2121                             params->ac);
2122                 return -EINVAL;
2123         }
2124
2125         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2126
2127         return 0;
2128 }
2129
2130 #ifdef CONFIG_PM
2131 static int ieee80211_suspend(struct wiphy *wiphy,
2132                              struct cfg80211_wowlan *wowlan)
2133 {
2134         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2135 }
2136
2137 static int ieee80211_resume(struct wiphy *wiphy)
2138 {
2139         return __ieee80211_resume(wiphy_priv(wiphy));
2140 }
2141 #else
2142 #define ieee80211_suspend NULL
2143 #define ieee80211_resume NULL
2144 #endif
2145
2146 static int ieee80211_scan(struct wiphy *wiphy,
2147                           struct cfg80211_scan_request *req)
2148 {
2149         struct ieee80211_sub_if_data *sdata;
2150
2151         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2152
2153         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2154         case NL80211_IFTYPE_STATION:
2155         case NL80211_IFTYPE_ADHOC:
2156         case NL80211_IFTYPE_MESH_POINT:
2157         case NL80211_IFTYPE_P2P_CLIENT:
2158         case NL80211_IFTYPE_P2P_DEVICE:
2159                 break;
2160         case NL80211_IFTYPE_P2P_GO:
2161                 if (sdata->local->ops->hw_scan)
2162                         break;
2163                 /*
2164                  * FIXME: implement NoA while scanning in software,
2165                  * for now fall through to allow scanning only when
2166                  * beaconing hasn't been configured yet
2167                  */
2168         case NL80211_IFTYPE_AP:
2169                 /*
2170                  * If the scan has been forced (and the driver supports
2171                  * forcing), don't care about being beaconing already.
2172                  * This will create problems to the attached stations (e.g. all
2173                  * the  frames sent while scanning on other channel will be
2174                  * lost)
2175                  */
2176                 if (sdata->u.ap.beacon &&
2177                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2178                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2179                         return -EOPNOTSUPP;
2180                 break;
2181         case NL80211_IFTYPE_NAN:
2182         default:
2183                 return -EOPNOTSUPP;
2184         }
2185
2186         return ieee80211_request_scan(sdata, req);
2187 }
2188
2189 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2190 {
2191         ieee80211_scan_cancel(wiphy_priv(wiphy));
2192 }
2193
2194 static int
2195 ieee80211_sched_scan_start(struct wiphy *wiphy,
2196                            struct net_device *dev,
2197                            struct cfg80211_sched_scan_request *req)
2198 {
2199         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2200
2201         if (!sdata->local->ops->sched_scan_start)
2202                 return -EOPNOTSUPP;
2203
2204         return ieee80211_request_sched_scan_start(sdata, req);
2205 }
2206
2207 static int
2208 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2209                           u64 reqid)
2210 {
2211         struct ieee80211_local *local = wiphy_priv(wiphy);
2212
2213         if (!local->ops->sched_scan_stop)
2214                 return -EOPNOTSUPP;
2215
2216         return ieee80211_request_sched_scan_stop(local);
2217 }
2218
2219 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2220                           struct cfg80211_auth_request *req)
2221 {
2222         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2223 }
2224
2225 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2226                            struct cfg80211_assoc_request *req)
2227 {
2228         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2229 }
2230
2231 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2232                             struct cfg80211_deauth_request *req)
2233 {
2234         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2235 }
2236
2237 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2238                               struct cfg80211_disassoc_request *req)
2239 {
2240         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2241 }
2242
2243 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2244                                struct cfg80211_ibss_params *params)
2245 {
2246         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2247 }
2248
2249 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2250 {
2251         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2252 }
2253
2254 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2255                               struct ocb_setup *setup)
2256 {
2257         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2258 }
2259
2260 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2261 {
2262         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2263 }
2264
2265 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2266                                     int rate[NUM_NL80211_BANDS])
2267 {
2268         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2269
2270         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2271                sizeof(int) * NUM_NL80211_BANDS);
2272
2273         return 0;
2274 }
2275
2276 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2277 {
2278         struct ieee80211_local *local = wiphy_priv(wiphy);
2279         int err;
2280
2281         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2282                 ieee80211_check_fast_xmit_all(local);
2283
2284                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2285
2286                 if (err) {
2287                         ieee80211_check_fast_xmit_all(local);
2288                         return err;
2289                 }
2290         }
2291
2292         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2293             (changed & WIPHY_PARAM_DYN_ACK)) {
2294                 s16 coverage_class;
2295
2296                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2297                                         wiphy->coverage_class : -1;
2298                 err = drv_set_coverage_class(local, coverage_class);
2299
2300                 if (err)
2301                         return err;
2302         }
2303
2304         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2305                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2306
2307                 if (err)
2308                         return err;
2309         }
2310
2311         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2312                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2313                         return -EINVAL;
2314                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2315         }
2316         if (changed & WIPHY_PARAM_RETRY_LONG) {
2317                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2318                         return -EINVAL;
2319                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2320         }
2321         if (changed &
2322             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2323                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2324
2325         return 0;
2326 }
2327
2328 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2329                                   struct wireless_dev *wdev,
2330                                   enum nl80211_tx_power_setting type, int mbm)
2331 {
2332         struct ieee80211_local *local = wiphy_priv(wiphy);
2333         struct ieee80211_sub_if_data *sdata;
2334         enum nl80211_tx_power_setting txp_type = type;
2335         bool update_txp_type = false;
2336         bool has_monitor = false;
2337
2338         if (wdev) {
2339                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2340
2341                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2342                         sdata = rtnl_dereference(local->monitor_sdata);
2343                         if (!sdata)
2344                                 return -EOPNOTSUPP;
2345                 }
2346
2347                 switch (type) {
2348                 case NL80211_TX_POWER_AUTOMATIC:
2349                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2350                         txp_type = NL80211_TX_POWER_LIMITED;
2351                         break;
2352                 case NL80211_TX_POWER_LIMITED:
2353                 case NL80211_TX_POWER_FIXED:
2354                         if (mbm < 0 || (mbm % 100))
2355                                 return -EOPNOTSUPP;
2356                         sdata->user_power_level = MBM_TO_DBM(mbm);
2357                         break;
2358                 }
2359
2360                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2361                         update_txp_type = true;
2362                         sdata->vif.bss_conf.txpower_type = txp_type;
2363                 }
2364
2365                 ieee80211_recalc_txpower(sdata, update_txp_type);
2366
2367                 return 0;
2368         }
2369
2370         switch (type) {
2371         case NL80211_TX_POWER_AUTOMATIC:
2372                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2373                 txp_type = NL80211_TX_POWER_LIMITED;
2374                 break;
2375         case NL80211_TX_POWER_LIMITED:
2376         case NL80211_TX_POWER_FIXED:
2377                 if (mbm < 0 || (mbm % 100))
2378                         return -EOPNOTSUPP;
2379                 local->user_power_level = MBM_TO_DBM(mbm);
2380                 break;
2381         }
2382
2383         mutex_lock(&local->iflist_mtx);
2384         list_for_each_entry(sdata, &local->interfaces, list) {
2385                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2386                         has_monitor = true;
2387                         continue;
2388                 }
2389                 sdata->user_power_level = local->user_power_level;
2390                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2391                         update_txp_type = true;
2392                 sdata->vif.bss_conf.txpower_type = txp_type;
2393         }
2394         list_for_each_entry(sdata, &local->interfaces, list) {
2395                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2396                         continue;
2397                 ieee80211_recalc_txpower(sdata, update_txp_type);
2398         }
2399         mutex_unlock(&local->iflist_mtx);
2400
2401         if (has_monitor) {
2402                 sdata = rtnl_dereference(local->monitor_sdata);
2403                 if (sdata) {
2404                         sdata->user_power_level = local->user_power_level;
2405                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2406                                 update_txp_type = true;
2407                         sdata->vif.bss_conf.txpower_type = txp_type;
2408
2409                         ieee80211_recalc_txpower(sdata, update_txp_type);
2410                 }
2411         }
2412
2413         return 0;
2414 }
2415
2416 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2417                                   struct wireless_dev *wdev,
2418                                   int *dbm)
2419 {
2420         struct ieee80211_local *local = wiphy_priv(wiphy);
2421         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2422
2423         if (local->ops->get_txpower)
2424                 return drv_get_txpower(local, sdata, dbm);
2425
2426         if (!local->use_chanctx)
2427                 *dbm = local->hw.conf.power_level;
2428         else
2429                 *dbm = sdata->vif.bss_conf.txpower;
2430
2431         /* INT_MIN indicates no power level was set yet */
2432         if (*dbm == INT_MIN)
2433                 return -EINVAL;
2434
2435         return 0;
2436 }
2437
2438 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2439                                   const u8 *addr)
2440 {
2441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2442
2443         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2444
2445         return 0;
2446 }
2447
2448 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2449 {
2450         struct ieee80211_local *local = wiphy_priv(wiphy);
2451
2452         drv_rfkill_poll(local);
2453 }
2454
2455 #ifdef CONFIG_NL80211_TESTMODE
2456 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2457                                   struct wireless_dev *wdev,
2458                                   void *data, int len)
2459 {
2460         struct ieee80211_local *local = wiphy_priv(wiphy);
2461         struct ieee80211_vif *vif = NULL;
2462
2463         if (!local->ops->testmode_cmd)
2464                 return -EOPNOTSUPP;
2465
2466         if (wdev) {
2467                 struct ieee80211_sub_if_data *sdata;
2468
2469                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2470                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2471                         vif = &sdata->vif;
2472         }
2473
2474         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2475 }
2476
2477 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2478                                    struct sk_buff *skb,
2479                                    struct netlink_callback *cb,
2480                                    void *data, int len)
2481 {
2482         struct ieee80211_local *local = wiphy_priv(wiphy);
2483
2484         if (!local->ops->testmode_dump)
2485                 return -EOPNOTSUPP;
2486
2487         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2488 }
2489 #endif
2490
2491 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2492                                 enum ieee80211_smps_mode smps_mode)
2493 {
2494         struct sta_info *sta;
2495         enum ieee80211_smps_mode old_req;
2496
2497         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2498                 return -EINVAL;
2499
2500         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2501                 return 0;
2502
2503         old_req = sdata->u.ap.req_smps;
2504         sdata->u.ap.req_smps = smps_mode;
2505
2506         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2507         if (old_req == smps_mode ||
2508             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2509                 return 0;
2510
2511         ht_dbg(sdata,
2512                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2513                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2514
2515         mutex_lock(&sdata->local->sta_mtx);
2516         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2517                 /*
2518                  * Only stations associated to our AP and
2519                  * associated VLANs
2520                  */
2521                 if (sta->sdata->bss != &sdata->u.ap)
2522                         continue;
2523
2524                 /* This station doesn't support MIMO - skip it */
2525                 if (sta_info_tx_streams(sta) == 1)
2526                         continue;
2527
2528                 /*
2529                  * Don't wake up a STA just to send the action frame
2530                  * unless we are getting more restrictive.
2531                  */
2532                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2533                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2534                                                    smps_mode)) {
2535                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2536                                sta->sta.addr);
2537                         continue;
2538                 }
2539
2540                 /*
2541                  * If the STA is not authorized, wait until it gets
2542                  * authorized and the action frame will be sent then.
2543                  */
2544                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2545                         continue;
2546
2547                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2548                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2549                                            sdata->vif.bss_conf.bssid);
2550         }
2551         mutex_unlock(&sdata->local->sta_mtx);
2552
2553         sdata->smps_mode = smps_mode;
2554         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2555
2556         return 0;
2557 }
2558
2559 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2560                                  enum ieee80211_smps_mode smps_mode)
2561 {
2562         const u8 *ap;
2563         enum ieee80211_smps_mode old_req;
2564         int err;
2565         struct sta_info *sta;
2566         bool tdls_peer_found = false;
2567
2568         lockdep_assert_held(&sdata->wdev.mtx);
2569
2570         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2571                 return -EINVAL;
2572
2573         old_req = sdata->u.mgd.req_smps;
2574         sdata->u.mgd.req_smps = smps_mode;
2575
2576         if (old_req == smps_mode &&
2577             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2578                 return 0;
2579
2580         /*
2581          * If not associated, or current association is not an HT
2582          * association, there's no need to do anything, just store
2583          * the new value until we associate.
2584          */
2585         if (!sdata->u.mgd.associated ||
2586             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2587                 return 0;
2588
2589         ap = sdata->u.mgd.associated->bssid;
2590
2591         rcu_read_lock();
2592         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2593                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2594                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2595                         continue;
2596
2597                 tdls_peer_found = true;
2598                 break;
2599         }
2600         rcu_read_unlock();
2601
2602         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2603                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2604                         smps_mode = IEEE80211_SMPS_OFF;
2605                 else
2606                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2607         }
2608
2609         /* send SM PS frame to AP */
2610         err = ieee80211_send_smps_action(sdata, smps_mode,
2611                                          ap, ap);
2612         if (err)
2613                 sdata->u.mgd.req_smps = old_req;
2614         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2615                 ieee80211_teardown_tdls_peers(sdata);
2616
2617         return err;
2618 }
2619
2620 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2621                                     bool enabled, int timeout)
2622 {
2623         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2624         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2625
2626         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2627                 return -EOPNOTSUPP;
2628
2629         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2630                 return -EOPNOTSUPP;
2631
2632         if (enabled == sdata->u.mgd.powersave &&
2633             timeout == local->dynamic_ps_forced_timeout)
2634                 return 0;
2635
2636         sdata->u.mgd.powersave = enabled;
2637         local->dynamic_ps_forced_timeout = timeout;
2638
2639         /* no change, but if automatic follow powersave */
2640         sdata_lock(sdata);
2641         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2642         sdata_unlock(sdata);
2643
2644         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2645                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2646
2647         ieee80211_recalc_ps(local);
2648         ieee80211_recalc_ps_vif(sdata);
2649
2650         return 0;
2651 }
2652
2653 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2654                                          struct net_device *dev,
2655                                          s32 rssi_thold, u32 rssi_hyst)
2656 {
2657         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2658         struct ieee80211_vif *vif = &sdata->vif;
2659         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2660
2661         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2662             rssi_hyst == bss_conf->cqm_rssi_hyst)
2663                 return 0;
2664
2665         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2666             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2667                 return -EOPNOTSUPP;
2668
2669         bss_conf->cqm_rssi_thold = rssi_thold;
2670         bss_conf->cqm_rssi_hyst = rssi_hyst;
2671         bss_conf->cqm_rssi_low = 0;
2672         bss_conf->cqm_rssi_high = 0;
2673         sdata->u.mgd.last_cqm_event_signal = 0;
2674
2675         /* tell the driver upon association, unless already associated */
2676         if (sdata->u.mgd.associated &&
2677             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2678                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2679
2680         return 0;
2681 }
2682
2683 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2684                                                struct net_device *dev,
2685                                                s32 rssi_low, s32 rssi_high)
2686 {
2687         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2688         struct ieee80211_vif *vif = &sdata->vif;
2689         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2690
2691         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2692                 return -EOPNOTSUPP;
2693
2694         bss_conf->cqm_rssi_low = rssi_low;
2695         bss_conf->cqm_rssi_high = rssi_high;
2696         bss_conf->cqm_rssi_thold = 0;
2697         bss_conf->cqm_rssi_hyst = 0;
2698         sdata->u.mgd.last_cqm_event_signal = 0;
2699
2700         /* tell the driver upon association, unless already associated */
2701         if (sdata->u.mgd.associated &&
2702             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2703                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2704
2705         return 0;
2706 }
2707
2708 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2709                                       struct net_device *dev,
2710                                       const u8 *addr,
2711                                       const struct cfg80211_bitrate_mask *mask)
2712 {
2713         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2714         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2715         int i, ret;
2716
2717         if (!ieee80211_sdata_running(sdata))
2718                 return -ENETDOWN;
2719
2720         /*
2721          * If active validate the setting and reject it if it doesn't leave
2722          * at least one basic rate usable, since we really have to be able
2723          * to send something, and if we're an AP we have to be able to do
2724          * so at a basic rate so that all clients can receive it.
2725          */
2726         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2727             sdata->vif.bss_conf.chandef.chan) {
2728                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2729                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2730
2731                 if (!(mask->control[band].legacy & basic_rates))
2732                         return -EINVAL;
2733         }
2734
2735         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2736                 ret = drv_set_bitrate_mask(local, sdata, mask);
2737                 if (ret)
2738                         return ret;
2739         }
2740
2741         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2742                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2743                 int j;
2744
2745                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2746                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2747                        sizeof(mask->control[i].ht_mcs));
2748                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2749                        mask->control[i].vht_mcs,
2750                        sizeof(mask->control[i].vht_mcs));
2751
2752                 sdata->rc_has_mcs_mask[i] = false;
2753                 sdata->rc_has_vht_mcs_mask[i] = false;
2754                 if (!sband)
2755                         continue;
2756
2757                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2758                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
2759                                 sdata->rc_has_mcs_mask[i] = true;
2760                                 break;
2761                         }
2762                 }
2763
2764                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2765                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
2766                                 sdata->rc_has_vht_mcs_mask[i] = true;
2767                                 break;
2768                         }
2769                 }
2770         }
2771
2772         return 0;
2773 }
2774
2775 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2776                                            struct net_device *dev,
2777                                            struct cfg80211_chan_def *chandef,
2778                                            u32 cac_time_ms)
2779 {
2780         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2781         struct ieee80211_local *local = sdata->local;
2782         int err;
2783
2784         mutex_lock(&local->mtx);
2785         if (!list_empty(&local->roc_list) || local->scanning) {
2786                 err = -EBUSY;
2787                 goto out_unlock;
2788         }
2789
2790         /* whatever, but channel contexts should not complain about that one */
2791         sdata->smps_mode = IEEE80211_SMPS_OFF;
2792         sdata->needed_rx_chains = local->rx_chains;
2793
2794         err = ieee80211_vif_use_channel(sdata, chandef,
2795                                         IEEE80211_CHANCTX_SHARED);
2796         if (err)
2797                 goto out_unlock;
2798
2799         ieee80211_queue_delayed_work(&sdata->local->hw,
2800                                      &sdata->dfs_cac_timer_work,
2801                                      msecs_to_jiffies(cac_time_ms));
2802
2803  out_unlock:
2804         mutex_unlock(&local->mtx);
2805         return err;
2806 }
2807
2808 static void ieee80211_end_cac(struct wiphy *wiphy,
2809                               struct net_device *dev)
2810 {
2811         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2812         struct ieee80211_local *local = sdata->local;
2813
2814         mutex_lock(&local->mtx);
2815         list_for_each_entry(sdata, &local->interfaces, list) {
2816                 /* it might be waiting for the local->mtx, but then
2817                  * by the time it gets it, sdata->wdev.cac_started
2818                  * will no longer be true
2819                  */
2820                 cancel_delayed_work(&sdata->dfs_cac_timer_work);
2821
2822                 if (sdata->wdev.cac_started) {
2823                         ieee80211_vif_release_channel(sdata);
2824                         sdata->wdev.cac_started = false;
2825                 }
2826         }
2827         mutex_unlock(&local->mtx);
2828 }
2829
2830 static struct cfg80211_beacon_data *
2831 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2832 {
2833         struct cfg80211_beacon_data *new_beacon;
2834         u8 *pos;
2835         int len;
2836
2837         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2838               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2839               beacon->probe_resp_len;
2840
2841         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2842         if (!new_beacon)
2843                 return NULL;
2844
2845         pos = (u8 *)(new_beacon + 1);
2846         if (beacon->head_len) {
2847                 new_beacon->head_len = beacon->head_len;
2848                 new_beacon->head = pos;
2849                 memcpy(pos, beacon->head, beacon->head_len);
2850                 pos += beacon->head_len;
2851         }
2852         if (beacon->tail_len) {
2853                 new_beacon->tail_len = beacon->tail_len;
2854                 new_beacon->tail = pos;
2855                 memcpy(pos, beacon->tail, beacon->tail_len);
2856                 pos += beacon->tail_len;
2857         }
2858         if (beacon->beacon_ies_len) {
2859                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2860                 new_beacon->beacon_ies = pos;
2861                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2862                 pos += beacon->beacon_ies_len;
2863         }
2864         if (beacon->proberesp_ies_len) {
2865                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2866                 new_beacon->proberesp_ies = pos;
2867                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2868                 pos += beacon->proberesp_ies_len;
2869         }
2870         if (beacon->assocresp_ies_len) {
2871                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2872                 new_beacon->assocresp_ies = pos;
2873                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2874                 pos += beacon->assocresp_ies_len;
2875         }
2876         if (beacon->probe_resp_len) {
2877                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2878                 new_beacon->probe_resp = pos;
2879                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2880                 pos += beacon->probe_resp_len;
2881         }
2882
2883         return new_beacon;
2884 }
2885
2886 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2887 {
2888         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2889
2890         ieee80211_queue_work(&sdata->local->hw,
2891                              &sdata->csa_finalize_work);
2892 }
2893 EXPORT_SYMBOL(ieee80211_csa_finish);
2894
2895 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2896                                           u32 *changed)
2897 {
2898         int err;
2899
2900         switch (sdata->vif.type) {
2901         case NL80211_IFTYPE_AP:
2902                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2903                                               NULL);
2904                 kfree(sdata->u.ap.next_beacon);
2905                 sdata->u.ap.next_beacon = NULL;
2906
2907                 if (err < 0)
2908                         return err;
2909                 *changed |= err;
2910                 break;
2911         case NL80211_IFTYPE_ADHOC:
2912                 err = ieee80211_ibss_finish_csa(sdata);
2913                 if (err < 0)
2914                         return err;
2915                 *changed |= err;
2916                 break;
2917 #ifdef CONFIG_MAC80211_MESH
2918         case NL80211_IFTYPE_MESH_POINT:
2919                 err = ieee80211_mesh_finish_csa(sdata);
2920                 if (err < 0)
2921                         return err;
2922                 *changed |= err;
2923                 break;
2924 #endif
2925         default:
2926                 WARN_ON(1);
2927                 return -EINVAL;
2928         }
2929
2930         return 0;
2931 }
2932
2933 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2934 {
2935         struct ieee80211_local *local = sdata->local;
2936         u32 changed = 0;
2937         int err;
2938
2939         sdata_assert_lock(sdata);
2940         lockdep_assert_held(&local->mtx);
2941         lockdep_assert_held(&local->chanctx_mtx);
2942
2943         /*
2944          * using reservation isn't immediate as it may be deferred until later
2945          * with multi-vif. once reservation is complete it will re-schedule the
2946          * work with no reserved_chanctx so verify chandef to check if it
2947          * completed successfully
2948          */
2949
2950         if (sdata->reserved_chanctx) {
2951                 /*
2952                  * with multi-vif csa driver may call ieee80211_csa_finish()
2953                  * many times while waiting for other interfaces to use their
2954                  * reservations
2955                  */
2956                 if (sdata->reserved_ready)
2957                         return 0;
2958
2959                 return ieee80211_vif_use_reserved_context(sdata);
2960         }
2961
2962         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2963                                         &sdata->csa_chandef))
2964                 return -EINVAL;
2965
2966         sdata->vif.csa_active = false;
2967
2968         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2969         if (err)
2970                 return err;
2971
2972         ieee80211_bss_info_change_notify(sdata, changed);
2973
2974         if (sdata->csa_block_tx) {
2975                 ieee80211_wake_vif_queues(local, sdata,
2976                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2977                 sdata->csa_block_tx = false;
2978         }
2979
2980         err = drv_post_channel_switch(sdata);
2981         if (err)
2982                 return err;
2983
2984         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2985
2986         return 0;
2987 }
2988
2989 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2990 {
2991         if (__ieee80211_csa_finalize(sdata)) {
2992                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2993                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2994                                     GFP_KERNEL);
2995         }
2996 }
2997
2998 void ieee80211_csa_finalize_work(struct work_struct *work)
2999 {
3000         struct ieee80211_sub_if_data *sdata =
3001                 container_of(work, struct ieee80211_sub_if_data,
3002                              csa_finalize_work);
3003         struct ieee80211_local *local = sdata->local;
3004
3005         sdata_lock(sdata);
3006         mutex_lock(&local->mtx);
3007         mutex_lock(&local->chanctx_mtx);
3008
3009         /* AP might have been stopped while waiting for the lock. */
3010         if (!sdata->vif.csa_active)
3011                 goto unlock;
3012
3013         if (!ieee80211_sdata_running(sdata))
3014                 goto unlock;
3015
3016         ieee80211_csa_finalize(sdata);
3017
3018 unlock:
3019         mutex_unlock(&local->chanctx_mtx);
3020         mutex_unlock(&local->mtx);
3021         sdata_unlock(sdata);
3022 }
3023
3024 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3025                                     struct cfg80211_csa_settings *params,
3026                                     u32 *changed)
3027 {
3028         struct ieee80211_csa_settings csa = {};
3029         int err;
3030
3031         switch (sdata->vif.type) {
3032         case NL80211_IFTYPE_AP:
3033                 sdata->u.ap.next_beacon =
3034                         cfg80211_beacon_dup(&params->beacon_after);
3035                 if (!sdata->u.ap.next_beacon)
3036                         return -ENOMEM;
3037
3038                 /*
3039                  * With a count of 0, we don't have to wait for any
3040                  * TBTT before switching, so complete the CSA
3041                  * immediately.  In theory, with a count == 1 we
3042                  * should delay the switch until just before the next
3043                  * TBTT, but that would complicate things so we switch
3044                  * immediately too.  If we would delay the switch
3045                  * until the next TBTT, we would have to set the probe
3046                  * response here.
3047                  *
3048                  * TODO: A channel switch with count <= 1 without
3049                  * sending a CSA action frame is kind of useless,
3050                  * because the clients won't know we're changing
3051                  * channels.  The action frame must be implemented
3052                  * either here or in the userspace.
3053                  */
3054                 if (params->count <= 1)
3055                         break;
3056
3057                 if ((params->n_counter_offsets_beacon >
3058                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3059                     (params->n_counter_offsets_presp >
3060                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3061                         return -EINVAL;
3062
3063                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3064                 csa.counter_offsets_presp = params->counter_offsets_presp;
3065                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3066                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3067                 csa.count = params->count;
3068
3069                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3070                 if (err < 0) {
3071                         kfree(sdata->u.ap.next_beacon);
3072                         return err;
3073                 }
3074                 *changed |= err;
3075
3076                 break;
3077         case NL80211_IFTYPE_ADHOC:
3078                 if (!sdata->vif.bss_conf.ibss_joined)
3079                         return -EINVAL;
3080
3081                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3082                         return -EINVAL;
3083
3084                 switch (params->chandef.width) {
3085                 case NL80211_CHAN_WIDTH_40:
3086                         if (cfg80211_get_chandef_type(&params->chandef) !=
3087                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3088                                 return -EINVAL;
3089                 case NL80211_CHAN_WIDTH_5:
3090                 case NL80211_CHAN_WIDTH_10:
3091                 case NL80211_CHAN_WIDTH_20_NOHT:
3092                 case NL80211_CHAN_WIDTH_20:
3093                         break;
3094                 default:
3095                         return -EINVAL;
3096                 }
3097
3098                 /* changes into another band are not supported */
3099                 if (sdata->u.ibss.chandef.chan->band !=
3100                     params->chandef.chan->band)
3101                         return -EINVAL;
3102
3103                 /* see comments in the NL80211_IFTYPE_AP block */
3104                 if (params->count > 1) {
3105                         err = ieee80211_ibss_csa_beacon(sdata, params);
3106                         if (err < 0)
3107                                 return err;
3108                         *changed |= err;
3109                 }
3110
3111                 ieee80211_send_action_csa(sdata, params);
3112
3113                 break;
3114 #ifdef CONFIG_MAC80211_MESH
3115         case NL80211_IFTYPE_MESH_POINT: {
3116                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3117
3118                 /* changes into another band are not supported */
3119                 if (sdata->vif.bss_conf.chandef.chan->band !=
3120                     params->chandef.chan->band)
3121                         return -EINVAL;
3122
3123                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3124                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3125                         if (!ifmsh->pre_value)
3126                                 ifmsh->pre_value = 1;
3127                         else
3128                                 ifmsh->pre_value++;
3129                 }
3130
3131                 /* see comments in the NL80211_IFTYPE_AP block */
3132                 if (params->count > 1) {
3133                         err = ieee80211_mesh_csa_beacon(sdata, params);
3134                         if (err < 0) {
3135                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3136                                 return err;
3137                         }
3138                         *changed |= err;
3139                 }
3140
3141                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3142                         ieee80211_send_action_csa(sdata, params);
3143
3144                 break;
3145                 }
3146 #endif
3147         default:
3148                 return -EOPNOTSUPP;
3149         }
3150
3151         return 0;
3152 }
3153
3154 static int
3155 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3156                            struct cfg80211_csa_settings *params)
3157 {
3158         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3159         struct ieee80211_local *local = sdata->local;
3160         struct ieee80211_channel_switch ch_switch;
3161         struct ieee80211_chanctx_conf *conf;
3162         struct ieee80211_chanctx *chanctx;
3163         u32 changed = 0;
3164         int err;
3165
3166         sdata_assert_lock(sdata);
3167         lockdep_assert_held(&local->mtx);
3168
3169         if (!list_empty(&local->roc_list) || local->scanning)
3170                 return -EBUSY;
3171
3172         if (sdata->wdev.cac_started)
3173                 return -EBUSY;
3174
3175         if (cfg80211_chandef_identical(&params->chandef,
3176                                        &sdata->vif.bss_conf.chandef))
3177                 return -EINVAL;
3178
3179         /* don't allow another channel switch if one is already active. */
3180         if (sdata->vif.csa_active)
3181                 return -EBUSY;
3182
3183         mutex_lock(&local->chanctx_mtx);
3184         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3185                                          lockdep_is_held(&local->chanctx_mtx));
3186         if (!conf) {
3187                 err = -EBUSY;
3188                 goto out;
3189         }
3190
3191         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3192
3193         ch_switch.timestamp = 0;
3194         ch_switch.device_timestamp = 0;
3195         ch_switch.block_tx = params->block_tx;
3196         ch_switch.chandef = params->chandef;
3197         ch_switch.count = params->count;
3198
3199         err = drv_pre_channel_switch(sdata, &ch_switch);
3200         if (err)
3201                 goto out;
3202
3203         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3204                                             chanctx->mode,
3205                                             params->radar_required);
3206         if (err)
3207                 goto out;
3208
3209         /* if reservation is invalid then this will fail */
3210         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3211         if (err) {
3212                 ieee80211_vif_unreserve_chanctx(sdata);
3213                 goto out;
3214         }
3215
3216         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3217         if (err) {
3218                 ieee80211_vif_unreserve_chanctx(sdata);
3219                 goto out;
3220         }
3221
3222         sdata->csa_chandef = params->chandef;
3223         sdata->csa_block_tx = params->block_tx;
3224         sdata->vif.csa_active = true;
3225
3226         if (sdata->csa_block_tx)
3227                 ieee80211_stop_vif_queues(local, sdata,
3228                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3229
3230         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3231                                           params->count);
3232
3233         if (changed) {
3234                 ieee80211_bss_info_change_notify(sdata, changed);
3235                 drv_channel_switch_beacon(sdata, &params->chandef);
3236         } else {
3237                 /* if the beacon didn't change, we can finalize immediately */
3238                 ieee80211_csa_finalize(sdata);
3239         }
3240
3241 out:
3242         mutex_unlock(&local->chanctx_mtx);
3243         return err;
3244 }
3245
3246 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3247                              struct cfg80211_csa_settings *params)
3248 {
3249         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3250         struct ieee80211_local *local = sdata->local;
3251         int err;
3252
3253         mutex_lock(&local->mtx);
3254         err = __ieee80211_channel_switch(wiphy, dev, params);
3255         mutex_unlock(&local->mtx);
3256
3257         return err;
3258 }
3259
3260 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3261 {
3262         lockdep_assert_held(&local->mtx);
3263
3264         local->roc_cookie_counter++;
3265
3266         /* wow, you wrapped 64 bits ... more likely a bug */
3267         if (WARN_ON(local->roc_cookie_counter == 0))
3268                 local->roc_cookie_counter++;
3269
3270         return local->roc_cookie_counter;
3271 }
3272
3273 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3274                              u64 *cookie, gfp_t gfp)
3275 {
3276         unsigned long spin_flags;
3277         struct sk_buff *ack_skb;
3278         int id;
3279
3280         ack_skb = skb_copy(skb, gfp);
3281         if (!ack_skb)
3282                 return -ENOMEM;
3283
3284         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3285         id = idr_alloc(&local->ack_status_frames, ack_skb,
3286                        1, 0x10000, GFP_ATOMIC);
3287         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3288
3289         if (id < 0) {
3290                 kfree_skb(ack_skb);
3291                 return -ENOMEM;
3292         }
3293
3294         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3295
3296         *cookie = ieee80211_mgmt_tx_cookie(local);
3297         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3298
3299         return 0;
3300 }
3301
3302 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3303                                           struct wireless_dev *wdev,
3304                                           u16 frame_type, bool reg)
3305 {
3306         struct ieee80211_local *local = wiphy_priv(wiphy);
3307         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3308
3309         switch (frame_type) {
3310         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3311                 if (reg) {
3312                         local->probe_req_reg++;
3313                         sdata->vif.probe_req_reg++;
3314                 } else {
3315                         if (local->probe_req_reg)
3316                                 local->probe_req_reg--;
3317
3318                         if (sdata->vif.probe_req_reg)
3319                                 sdata->vif.probe_req_reg--;
3320                 }
3321
3322                 if (!local->open_count)
3323                         break;
3324
3325                 if (sdata->vif.probe_req_reg == 1)
3326                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3327                                                 FIF_PROBE_REQ);
3328                 else if (sdata->vif.probe_req_reg == 0)
3329                         drv_config_iface_filter(local, sdata, 0,
3330                                                 FIF_PROBE_REQ);
3331
3332                 ieee80211_configure_filter(local);
3333                 break;
3334         default:
3335                 break;
3336         }
3337 }
3338
3339 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3340 {
3341         struct ieee80211_local *local = wiphy_priv(wiphy);
3342
3343         if (local->started)
3344                 return -EOPNOTSUPP;
3345
3346         return drv_set_antenna(local, tx_ant, rx_ant);
3347 }
3348
3349 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3350 {
3351         struct ieee80211_local *local = wiphy_priv(wiphy);
3352
3353         return drv_get_antenna(local, tx_ant, rx_ant);
3354 }
3355
3356 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3357                                     struct net_device *dev,
3358                                     struct cfg80211_gtk_rekey_data *data)
3359 {
3360         struct ieee80211_local *local = wiphy_priv(wiphy);
3361         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3362
3363         if (!local->ops->set_rekey_data)
3364                 return -EOPNOTSUPP;
3365
3366         drv_set_rekey_data(local, sdata, data);
3367
3368         return 0;
3369 }
3370
3371 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3372                                   const u8 *peer, u64 *cookie)
3373 {
3374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3375         struct ieee80211_local *local = sdata->local;
3376         struct ieee80211_qos_hdr *nullfunc;
3377         struct sk_buff *skb;
3378         int size = sizeof(*nullfunc);
3379         __le16 fc;
3380         bool qos;
3381         struct ieee80211_tx_info *info;
3382         struct sta_info *sta;
3383         struct ieee80211_chanctx_conf *chanctx_conf;
3384         enum nl80211_band band;
3385         int ret;
3386
3387         /* the lock is needed to assign the cookie later */
3388         mutex_lock(&local->mtx);
3389
3390         rcu_read_lock();
3391         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3392         if (WARN_ON(!chanctx_conf)) {
3393                 ret = -EINVAL;
3394                 goto unlock;
3395         }
3396         band = chanctx_conf->def.chan->band;
3397         sta = sta_info_get_bss(sdata, peer);
3398         if (sta) {
3399                 qos = sta->sta.wme;
3400         } else {
3401                 ret = -ENOLINK;
3402                 goto unlock;
3403         }
3404
3405         if (qos) {
3406                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3407                                  IEEE80211_STYPE_QOS_NULLFUNC |
3408                                  IEEE80211_FCTL_FROMDS);
3409         } else {
3410                 size -= 2;
3411                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3412                                  IEEE80211_STYPE_NULLFUNC |
3413                                  IEEE80211_FCTL_FROMDS);
3414         }
3415
3416         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3417         if (!skb) {
3418                 ret = -ENOMEM;
3419                 goto unlock;
3420         }
3421
3422         skb->dev = dev;
3423
3424         skb_reserve(skb, local->hw.extra_tx_headroom);
3425
3426         nullfunc = skb_put(skb, size);
3427         nullfunc->frame_control = fc;
3428         nullfunc->duration_id = 0;
3429         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3430         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3431         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3432         nullfunc->seq_ctrl = 0;
3433
3434         info = IEEE80211_SKB_CB(skb);
3435
3436         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3437                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3438         info->band = band;
3439
3440         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3441         skb->priority = 7;
3442         if (qos)
3443                 nullfunc->qos_ctrl = cpu_to_le16(7);
3444
3445         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3446         if (ret) {
3447                 kfree_skb(skb);
3448                 goto unlock;
3449         }
3450
3451         local_bh_disable();
3452         ieee80211_xmit(sdata, sta, skb);
3453         local_bh_enable();
3454
3455         ret = 0;
3456 unlock:
3457         rcu_read_unlock();
3458         mutex_unlock(&local->mtx);
3459
3460         return ret;
3461 }
3462
3463 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3464                                      struct wireless_dev *wdev,
3465                                      struct cfg80211_chan_def *chandef)
3466 {
3467         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3468         struct ieee80211_local *local = wiphy_priv(wiphy);
3469         struct ieee80211_chanctx_conf *chanctx_conf;
3470         int ret = -ENODATA;
3471
3472         rcu_read_lock();
3473         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3474         if (chanctx_conf) {
3475                 *chandef = sdata->vif.bss_conf.chandef;
3476                 ret = 0;
3477         } else if (local->open_count > 0 &&
3478                    local->open_count == local->monitors &&
3479                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3480                 if (local->use_chanctx)
3481                         *chandef = local->monitor_chandef;
3482                 else
3483                         *chandef = local->_oper_chandef;
3484                 ret = 0;
3485         }
3486         rcu_read_unlock();
3487
3488         return ret;
3489 }
3490
3491 #ifdef CONFIG_PM
3492 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3493 {
3494         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3495 }
3496 #endif
3497
3498 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3499                                  struct net_device *dev,
3500                                  struct cfg80211_qos_map *qos_map)
3501 {
3502         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3503         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3504
3505         if (qos_map) {
3506                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3507                 if (!new_qos_map)
3508                         return -ENOMEM;
3509                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3510         } else {
3511                 /* A NULL qos_map was passed to disable QoS mapping */
3512                 new_qos_map = NULL;
3513         }
3514
3515         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3516         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3517         if (old_qos_map)
3518                 kfree_rcu(old_qos_map, rcu_head);
3519
3520         return 0;
3521 }
3522
3523 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3524                                       struct net_device *dev,
3525                                       struct cfg80211_chan_def *chandef)
3526 {
3527         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3528         int ret;
3529         u32 changed = 0;
3530
3531         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3532         if (ret == 0)
3533                 ieee80211_bss_info_change_notify(sdata, changed);
3534
3535         return ret;
3536 }
3537
3538 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3539                                u8 tsid, const u8 *peer, u8 up,
3540                                u16 admitted_time)
3541 {
3542         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3543         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3544         int ac = ieee802_1d_to_ac[up];
3545
3546         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3547                 return -EOPNOTSUPP;
3548
3549         if (!(sdata->wmm_acm & BIT(up)))
3550                 return -EINVAL;
3551
3552         if (ifmgd->tx_tspec[ac].admitted_time)
3553                 return -EBUSY;
3554
3555         if (admitted_time) {
3556                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3557                 ifmgd->tx_tspec[ac].tsid = tsid;
3558                 ifmgd->tx_tspec[ac].up = up;
3559         }
3560
3561         return 0;
3562 }
3563
3564 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3565                                u8 tsid, const u8 *peer)
3566 {
3567         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3568         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3569         struct ieee80211_local *local = wiphy_priv(wiphy);
3570         int ac;
3571
3572         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3573                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3574
3575                 /* skip unused entries */
3576                 if (!tx_tspec->admitted_time)
3577                         continue;
3578
3579                 if (tx_tspec->tsid != tsid)
3580                         continue;
3581
3582                 /* due to this new packets will be reassigned to non-ACM ACs */
3583                 tx_tspec->up = -1;
3584
3585                 /* Make sure that all packets have been sent to avoid to
3586                  * restore the QoS params on packets that are still on the
3587                  * queues.
3588                  */
3589                 synchronize_net();
3590                 ieee80211_flush_queues(local, sdata, false);
3591
3592                 /* restore the normal QoS parameters
3593                  * (unconditionally to avoid races)
3594                  */
3595                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3596                 tx_tspec->downgraded = false;
3597                 ieee80211_sta_handle_tspec_ac_params(sdata);
3598
3599                 /* finally clear all the data */
3600                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3601
3602                 return 0;
3603         }
3604
3605         return -ENOENT;
3606 }
3607
3608 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3609                                    u8 inst_id,
3610                                    enum nl80211_nan_func_term_reason reason,
3611                                    gfp_t gfp)
3612 {
3613         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3614         struct cfg80211_nan_func *func;
3615         u64 cookie;
3616
3617         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3618                 return;
3619
3620         spin_lock_bh(&sdata->u.nan.func_lock);
3621
3622         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3623         if (WARN_ON(!func)) {
3624                 spin_unlock_bh(&sdata->u.nan.func_lock);
3625                 return;
3626         }
3627
3628         cookie = func->cookie;
3629         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3630
3631         spin_unlock_bh(&sdata->u.nan.func_lock);
3632
3633         cfg80211_free_nan_func(func);
3634
3635         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3636                                      reason, cookie, gfp);
3637 }
3638 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3639
3640 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3641                               struct cfg80211_nan_match_params *match,
3642                               gfp_t gfp)
3643 {
3644         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3645         struct cfg80211_nan_func *func;
3646
3647         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3648                 return;
3649
3650         spin_lock_bh(&sdata->u.nan.func_lock);
3651
3652         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3653         if (WARN_ON(!func)) {
3654                 spin_unlock_bh(&sdata->u.nan.func_lock);
3655                 return;
3656         }
3657         match->cookie = func->cookie;
3658
3659         spin_unlock_bh(&sdata->u.nan.func_lock);
3660
3661         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3662 }
3663 EXPORT_SYMBOL(ieee80211_nan_func_match);
3664
3665 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3666                                               struct net_device *dev,
3667                                               const bool enabled)
3668 {
3669         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3670
3671         sdata->u.ap.multicast_to_unicast = enabled;
3672
3673         return 0;
3674 }
3675
3676 const struct cfg80211_ops mac80211_config_ops = {
3677         .add_virtual_intf = ieee80211_add_iface,
3678         .del_virtual_intf = ieee80211_del_iface,
3679         .change_virtual_intf = ieee80211_change_iface,
3680         .start_p2p_device = ieee80211_start_p2p_device,
3681         .stop_p2p_device = ieee80211_stop_p2p_device,
3682         .add_key = ieee80211_add_key,
3683         .del_key = ieee80211_del_key,
3684         .get_key = ieee80211_get_key,
3685         .set_default_key = ieee80211_config_default_key,
3686         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3687         .start_ap = ieee80211_start_ap,
3688         .change_beacon = ieee80211_change_beacon,
3689         .stop_ap = ieee80211_stop_ap,
3690         .add_station = ieee80211_add_station,
3691         .del_station = ieee80211_del_station,
3692         .change_station = ieee80211_change_station,
3693         .get_station = ieee80211_get_station,
3694         .dump_station = ieee80211_dump_station,
3695         .dump_survey = ieee80211_dump_survey,
3696 #ifdef CONFIG_MAC80211_MESH
3697         .add_mpath = ieee80211_add_mpath,
3698         .del_mpath = ieee80211_del_mpath,
3699         .change_mpath = ieee80211_change_mpath,
3700         .get_mpath = ieee80211_get_mpath,
3701         .dump_mpath = ieee80211_dump_mpath,
3702         .get_mpp = ieee80211_get_mpp,
3703         .dump_mpp = ieee80211_dump_mpp,
3704         .update_mesh_config = ieee80211_update_mesh_config,
3705         .get_mesh_config = ieee80211_get_mesh_config,
3706         .join_mesh = ieee80211_join_mesh,
3707         .leave_mesh = ieee80211_leave_mesh,
3708 #endif
3709         .join_ocb = ieee80211_join_ocb,
3710         .leave_ocb = ieee80211_leave_ocb,
3711         .change_bss = ieee80211_change_bss,
3712         .set_txq_params = ieee80211_set_txq_params,
3713         .set_monitor_channel = ieee80211_set_monitor_channel,
3714         .suspend = ieee80211_suspend,
3715         .resume = ieee80211_resume,
3716         .scan = ieee80211_scan,
3717         .abort_scan = ieee80211_abort_scan,
3718         .sched_scan_start = ieee80211_sched_scan_start,
3719         .sched_scan_stop = ieee80211_sched_scan_stop,
3720         .auth = ieee80211_auth,
3721         .assoc = ieee80211_assoc,
3722         .deauth = ieee80211_deauth,
3723         .disassoc = ieee80211_disassoc,
3724         .join_ibss = ieee80211_join_ibss,
3725         .leave_ibss = ieee80211_leave_ibss,
3726         .set_mcast_rate = ieee80211_set_mcast_rate,
3727         .set_wiphy_params = ieee80211_set_wiphy_params,
3728         .set_tx_power = ieee80211_set_tx_power,
3729         .get_tx_power = ieee80211_get_tx_power,
3730         .set_wds_peer = ieee80211_set_wds_peer,
3731         .rfkill_poll = ieee80211_rfkill_poll,
3732         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3733         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3734         .set_power_mgmt = ieee80211_set_power_mgmt,
3735         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3736         .remain_on_channel = ieee80211_remain_on_channel,
3737         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3738         .mgmt_tx = ieee80211_mgmt_tx,
3739         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3740         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3741         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3742         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3743         .set_antenna = ieee80211_set_antenna,
3744         .get_antenna = ieee80211_get_antenna,
3745         .set_rekey_data = ieee80211_set_rekey_data,
3746         .tdls_oper = ieee80211_tdls_oper,
3747         .tdls_mgmt = ieee80211_tdls_mgmt,
3748         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3749         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3750         .probe_client = ieee80211_probe_client,
3751         .set_noack_map = ieee80211_set_noack_map,
3752 #ifdef CONFIG_PM
3753         .set_wakeup = ieee80211_set_wakeup,
3754 #endif
3755         .get_channel = ieee80211_cfg_get_channel,
3756         .start_radar_detection = ieee80211_start_radar_detection,
3757         .end_cac = ieee80211_end_cac,
3758         .channel_switch = ieee80211_channel_switch,
3759         .set_qos_map = ieee80211_set_qos_map,
3760         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3761         .add_tx_ts = ieee80211_add_tx_ts,
3762         .del_tx_ts = ieee80211_del_tx_ts,
3763         .start_nan = ieee80211_start_nan,
3764         .stop_nan = ieee80211_stop_nan,
3765         .nan_change_conf = ieee80211_nan_change_conf,
3766         .add_nan_func = ieee80211_add_nan_func,
3767         .del_nan_func = ieee80211_del_nan_func,
3768         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3769 };