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 (key->sta && test_sta_flag(key->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, true);
 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                 if (sband) {
 665                         brate = sband->bitrates[rate->idx].bitrate;
 666                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 667                 }
 668         }
 669         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 670                 rinfo->bw = RATE_INFO_BW_40;
 671         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 672                 rinfo->bw = RATE_INFO_BW_80;
 673         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 674                 rinfo->bw = RATE_INFO_BW_160;
 675         else
 676                 rinfo->bw = RATE_INFO_BW_20;
 677         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 678                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 679 }
 680
 681 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 682                                   int idx, u8 *mac, struct station_info *sinfo)
 683 {
 684         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 685         struct ieee80211_local *local = sdata->local;
 686         struct sta_info *sta;
 687         int ret = -ENOENT;
 688
 689         mutex_lock(&local->sta_mtx);
 690
 691         sta = sta_info_get_by_idx(sdata, idx);
 692         if (sta) {
 693                 ret = 0;
 694                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 695                 sta_set_sinfo(sta, sinfo);
 696         }
 697
 698         mutex_unlock(&local->sta_mtx);
 699
 700         return ret;
 701 }
 702
 703 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 704                                  int idx, struct survey_info *survey)
 705 {
 706         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 707
 708         return drv_get_survey(local, idx, survey);
 709 }
 710
 711 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 712                                  const u8 *mac, struct station_info *sinfo)
 713 {
 714         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 715         struct ieee80211_local *local = sdata->local;
 716         struct sta_info *sta;
 717         int ret = -ENOENT;
 718
 719         mutex_lock(&local->sta_mtx);
 720
 721         sta = sta_info_get_bss(sdata, mac);
 722         if (sta) {
 723                 ret = 0;
 724                 sta_set_sinfo(sta, sinfo);
 725         }
 726
 727         mutex_unlock(&local->sta_mtx);
 728
 729         return ret;
 730 }
 731
 732 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 733                                          struct cfg80211_chan_def *chandef)
 734 {
 735         struct ieee80211_local *local = wiphy_priv(wiphy);
 736         struct ieee80211_sub_if_data *sdata;
 737         int ret = 0;
 738
 739         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 740                 return 0;
 741
 742         mutex_lock(&local->mtx);
 743         if (local->use_chanctx) {
 744                 sdata = rtnl_dereference(local->monitor_sdata);
 745                 if (sdata) {
 746                         ieee80211_vif_release_channel(sdata);
 747                         ret = ieee80211_vif_use_channel(sdata, chandef,
 748                                         IEEE80211_CHANCTX_EXCLUSIVE);
 749                 }
 750         } else if (local->open_count == local->monitors) {
 751                 local->_oper_chandef = *chandef;
 752                 ieee80211_hw_config(local, 0);
 753         }
 754
 755         if (ret == 0)
 756                 local->monitor_chandef = *chandef;
 757         mutex_unlock(&local->mtx);
 758
 759         return ret;
 760 }
 761
 762 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 763                                     const u8 *resp, size_t resp_len,
 764                                     const struct ieee80211_csa_settings *csa)
 765 {
 766         struct probe_resp *new, *old;
 767
 768         if (!resp || !resp_len)
 769                 return 1;
 770
 771         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 772
 773         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 774         if (!new)
 775                 return -ENOMEM;
 776
 777         new->len = resp_len;
 778         memcpy(new->data, resp, resp_len);
 779
 780         if (csa)
 781                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 782                        csa->n_counter_offsets_presp *
 783                        sizeof(new->csa_counter_offsets[0]));
 784
 785         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 786         if (old)
 787                 kfree_rcu(old, rcu_head);
 788
 789         return 0;
 790 }
 791
 792 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 793                                    struct cfg80211_beacon_data *params,
 794                                    const struct ieee80211_csa_settings *csa)
 795 {
 796         struct beacon_data *new, *old;
 797         int new_head_len, new_tail_len;
 798         int size, err;
 799         u32 changed = BSS_CHANGED_BEACON;
 800
 801         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 802
 803
 804         /* Need to have a beacon head if we don't have one yet */
 805         if (!params->head && !old)
 806                 return -EINVAL;
 807
 808         /* new or old head? */
 809         if (params->head)
 810                 new_head_len = params->head_len;
 811         else
 812                 new_head_len = old->head_len;
 813
 814         /* new or old tail? */
 815         if (params->tail || !old)
 816                 /* params->tail_len will be zero for !params->tail */
 817                 new_tail_len = params->tail_len;
 818         else
 819                 new_tail_len = old->tail_len;
 820
 821         size = sizeof(*new) + new_head_len + new_tail_len;
 822
 823         new = kzalloc(size, GFP_KERNEL);
 824         if (!new)
 825                 return -ENOMEM;
 826
 827         /* start filling the new info now */
 828
 829         /*
 830          * pointers go into the block we allocated,
 831          * memory is | beacon_data | head | tail |
 832          */
 833         new->head = ((u8 *) new) + sizeof(*new);
 834         new->tail = new->head + new_head_len;
 835         new->head_len = new_head_len;
 836         new->tail_len = new_tail_len;
 837
 838         if (csa) {
 839                 new->csa_current_counter = csa->count;
 840                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 841                        csa->n_counter_offsets_beacon *
 842                        sizeof(new->csa_counter_offsets[0]));
 843         }
 844
 845         /* copy in head */
 846         if (params->head)
 847                 memcpy(new->head, params->head, new_head_len);
 848         else
 849                 memcpy(new->head, old->head, new_head_len);
 850
 851         /* copy in optional tail */
 852         if (params->tail)
 853                 memcpy(new->tail, params->tail, new_tail_len);
 854         else
 855                 if (old)
 856                         memcpy(new->tail, old->tail, new_tail_len);
 857
 858         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 859                                        params->probe_resp_len, csa);
 860         if (err < 0)
 861                 return err;
 862         if (err == 0)
 863                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 864
 865         rcu_assign_pointer(sdata->u.ap.beacon, new);
 866
 867         if (old)
 868                 kfree_rcu(old, rcu_head);
 869
 870         return changed;
 871 }
 872
 873 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 874                               struct cfg80211_ap_settings *params)
 875 {
 876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 877         struct ieee80211_local *local = sdata->local;
 878         struct beacon_data *old;
 879         struct ieee80211_sub_if_data *vlan;
 880         u32 changed = BSS_CHANGED_BEACON_INT |
 881                       BSS_CHANGED_BEACON_ENABLED |
 882                       BSS_CHANGED_BEACON |
 883                       BSS_CHANGED_SSID |
 884                       BSS_CHANGED_P2P_PS |
 885                       BSS_CHANGED_TXPOWER;
 886         int err;
 887
 888         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 889         if (old)
 890                 return -EALREADY;
 891
 892         switch (params->smps_mode) {
 893         case NL80211_SMPS_OFF:
 894                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 895                 break;
 896         case NL80211_SMPS_STATIC:
 897                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 898                 break;
 899         case NL80211_SMPS_DYNAMIC:
 900                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 901                 break;
 902         default:
 903                 return -EINVAL;
 904         }
 905         sdata->needed_rx_chains = sdata->local->rx_chains;
 906
 907         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 908
 909         mutex_lock(&local->mtx);
 910         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 911                                         IEEE80211_CHANCTX_SHARED);
 912         if (!err)
 913                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 914         mutex_unlock(&local->mtx);
 915         if (err)
 916                 return err;
 917
 918         /*
 919          * Apply control port protocol, this allows us to
 920          * not encrypt dynamic WEP control frames.
 921          */
 922         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 923         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 924         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 925                                                         &params->crypto,
 926                                                         sdata->vif.type);
 927
 928         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 929                 vlan->control_port_protocol =
 930                         params->crypto.control_port_ethertype;
 931                 vlan->control_port_no_encrypt =
 932                         params->crypto.control_port_no_encrypt;
 933                 vlan->encrypt_headroom =
 934                         ieee80211_cs_headroom(sdata->local,
 935                                               &params->crypto,
 936                                               vlan->vif.type);
 937         }
 938
 939         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 940         sdata->vif.bss_conf.enable_beacon = true;
 941         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 942
 943         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 944         if (params->ssid_len)
 945                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 946                        params->ssid_len);
 947         sdata->vif.bss_conf.hidden_ssid =
 948                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 949
 950         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 951                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 952         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 953                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 954         if (params->p2p_opp_ps)
 955                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 956                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 957
 958         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 959         if (err < 0) {
 960                 ieee80211_vif_release_channel(sdata);
 961                 return err;
 962         }
 963         changed |= err;
 964
 965         err = drv_start_ap(sdata->local, sdata);
 966         if (err) {
 967                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 968
 969                 if (old)
 970                         kfree_rcu(old, rcu_head);
 971                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 972                 ieee80211_vif_release_channel(sdata);
 973                 return err;
 974         }
 975
 976         ieee80211_recalc_dtim(local, sdata);
 977         ieee80211_bss_info_change_notify(sdata, changed);
 978
 979         netif_carrier_on(dev);
 980         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 981                 netif_carrier_on(vlan->dev);
 982
 983         return 0;
 984 }
 985
 986 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 987                                    struct cfg80211_beacon_data *params)
 988 {
 989         struct ieee80211_sub_if_data *sdata;
 990         struct beacon_data *old;
 991         int err;
 992
 993         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 994         sdata_assert_lock(sdata);
 995
 996         /* don't allow changing the beacon while CSA is in place - offset
 997          * of channel switch counter may change
 998          */
 999         if (sdata->vif.csa_active)
1000                 return -EBUSY;
1001
1002         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1003         if (!old)
1004                 return -ENOENT;
1005
1006         err = ieee80211_assign_beacon(sdata, params, NULL);
1007         if (err < 0)
1008                 return err;
1009         ieee80211_bss_info_change_notify(sdata, err);
1010         return 0;
1011 }
1012
1013 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1014 {
1015         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1016         struct ieee80211_sub_if_data *vlan;
1017         struct ieee80211_local *local = sdata->local;
1018         struct beacon_data *old_beacon;
1019         struct probe_resp *old_probe_resp;
1020         struct cfg80211_chan_def chandef;
1021
1022         sdata_assert_lock(sdata);
1023
1024         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1025         if (!old_beacon)
1026                 return -ENOENT;
1027         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1028
1029         /* abort any running channel switch */
1030         mutex_lock(&local->mtx);
1031         sdata->vif.csa_active = false;
1032         if (sdata->csa_block_tx) {
1033                 ieee80211_wake_vif_queues(local, sdata,
1034                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1035                 sdata->csa_block_tx = false;
1036         }
1037
1038         mutex_unlock(&local->mtx);
1039
1040         kfree(sdata->u.ap.next_beacon);
1041         sdata->u.ap.next_beacon = NULL;
1042
1043         /* turn off carrier for this interface and dependent VLANs */
1044         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1045                 netif_carrier_off(vlan->dev);
1046         netif_carrier_off(dev);
1047
1048         /* remove beacon and probe response */
1049         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1050         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1051         kfree_rcu(old_beacon, rcu_head);
1052         if (old_probe_resp)
1053                 kfree_rcu(old_probe_resp, rcu_head);
1054         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1055
1056         __sta_info_flush(sdata, true);
1057         ieee80211_free_keys(sdata, true);
1058
1059         sdata->vif.bss_conf.enable_beacon = false;
1060         sdata->vif.bss_conf.ssid_len = 0;
1061         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1062         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1063
1064         if (sdata->wdev.cac_started) {
1065                 chandef = sdata->vif.bss_conf.chandef;
1066                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1067                 cfg80211_cac_event(sdata->dev, &chandef,
1068                                    NL80211_RADAR_CAC_ABORTED,
1069                                    GFP_KERNEL);
1070         }
1071
1072         drv_stop_ap(sdata->local, sdata);
1073
1074         /* free all potentially still buffered bcast frames */
1075         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1076         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1077
1078         mutex_lock(&local->mtx);
1079         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1080         ieee80211_vif_release_channel(sdata);
1081         mutex_unlock(&local->mtx);
1082
1083         return 0;
1084 }
1085
1086 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1087 struct iapp_layer2_update {
1088         u8 da[ETH_ALEN];        /* broadcast */
1089         u8 sa[ETH_ALEN];        /* STA addr */
1090         __be16 len;             /* 6 */
1091         u8 dsap;                /* 0 */
1092         u8 ssap;                /* 0 */
1093         u8 control;
1094         u8 xid_info[3];
1095 } __packed;
1096
1097 static void ieee80211_send_layer2_update(struct sta_info *sta)
1098 {
1099         struct iapp_layer2_update *msg;
1100         struct sk_buff *skb;
1101
1102         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1103          * bridge devices */
1104
1105         skb = dev_alloc_skb(sizeof(*msg));
1106         if (!skb)
1107                 return;
1108         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1109
1110         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1111          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1112
1113         eth_broadcast_addr(msg->da);
1114         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1115         msg->len = htons(6);
1116         msg->dsap = 0;
1117         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1118         msg->control = 0xaf;    /* XID response lsb.1111F101.
1119                                  * F=0 (no poll command; unsolicited frame) */
1120         msg->xid_info[0] = 0x81;        /* XID format identifier */
1121         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1122         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1123
1124         skb->dev = sta->sdata->dev;
1125         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1126         memset(skb->cb, 0, sizeof(skb->cb));
1127         netif_rx_ni(skb);
1128 }
1129
1130 static int sta_apply_auth_flags(struct ieee80211_local *local,
1131                                 struct sta_info *sta,
1132                                 u32 mask, u32 set)
1133 {
1134         int ret;
1135
1136         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1137             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1138             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1139                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1140                 if (ret)
1141                         return ret;
1142         }
1143
1144         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1145             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1146             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1147                 /*
1148                  * When peer becomes associated, init rate control as
1149                  * well. Some drivers require rate control initialized
1150                  * before drv_sta_state() is called.
1151                  */
1152                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1153                         rate_control_rate_init(sta);
1154
1155                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1156                 if (ret)
1157                         return ret;
1158         }
1159
1160         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1161                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1162                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1163                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1164                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1165                 else
1166                         ret = 0;
1167                 if (ret)
1168                         return ret;
1169         }
1170
1171         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1172             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1173             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1174                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1175                 if (ret)
1176                         return ret;
1177         }
1178
1179         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1180             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1181             test_sta_flag(sta, WLAN_STA_AUTH)) {
1182                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1183                 if (ret)
1184                         return ret;
1185         }
1186
1187         return 0;
1188 }
1189
1190 static void sta_apply_mesh_params(struct ieee80211_local *local,
1191                                   struct sta_info *sta,
1192                                   struct station_parameters *params)
1193 {
1194 #ifdef CONFIG_MAC80211_MESH
1195         struct ieee80211_sub_if_data *sdata = sta->sdata;
1196         u32 changed = 0;
1197
1198         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1199                 switch (params->plink_state) {
1200                 case NL80211_PLINK_ESTAB:
1201                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1202                                 changed = mesh_plink_inc_estab_count(sdata);
1203                         sta->mesh->plink_state = params->plink_state;
1204                         sta->mesh->aid = params->peer_aid;
1205
1206                         ieee80211_mps_sta_status_update(sta);
1207                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1208                                       sdata->u.mesh.mshcfg.power_mode);
1209                         break;
1210                 case NL80211_PLINK_LISTEN:
1211                 case NL80211_PLINK_BLOCKED:
1212                 case NL80211_PLINK_OPN_SNT:
1213                 case NL80211_PLINK_OPN_RCVD:
1214                 case NL80211_PLINK_CNF_RCVD:
1215                 case NL80211_PLINK_HOLDING:
1216                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1217                                 changed = mesh_plink_dec_estab_count(sdata);
1218                         sta->mesh->plink_state = params->plink_state;
1219
1220                         ieee80211_mps_sta_status_update(sta);
1221                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1222                                         NL80211_MESH_POWER_UNKNOWN);
1223                         break;
1224                 default:
1225                         /*  nothing  */
1226                         break;
1227                 }
1228         }
1229
1230         switch (params->plink_action) {
1231         case NL80211_PLINK_ACTION_NO_ACTION:
1232                 /* nothing */
1233                 break;
1234         case NL80211_PLINK_ACTION_OPEN:
1235                 changed |= mesh_plink_open(sta);
1236                 break;
1237         case NL80211_PLINK_ACTION_BLOCK:
1238                 changed |= mesh_plink_block(sta);
1239                 break;
1240         }
1241
1242         if (params->local_pm)
1243                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1244                                                           params->local_pm);
1245
1246         ieee80211_mbss_info_change_notify(sdata, changed);
1247 #endif
1248 }
1249
1250 static int sta_apply_parameters(struct ieee80211_local *local,
1251                                 struct sta_info *sta,
1252                                 struct station_parameters *params)
1253 {
1254         int ret = 0;
1255         struct ieee80211_supported_band *sband;
1256         struct ieee80211_sub_if_data *sdata = sta->sdata;
1257         u32 mask, set;
1258
1259         sband = ieee80211_get_sband(sdata);
1260         if (!sband)
1261                 return -EINVAL;
1262
1263         mask = params->sta_flags_mask;
1264         set = params->sta_flags_set;
1265
1266         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1267                 /*
1268                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1269                  * API but must follow AUTHENTICATED for driver state.
1270                  */
1271                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1272                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1273                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1274                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1275         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1276                 /*
1277                  * TDLS -- everything follows authorized, but
1278                  * only becoming authorized is possible, not
1279                  * going back
1280                  */
1281                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1282                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1283                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1284                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1285                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1286                 }
1287         }
1288
1289         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1290             local->hw.queues >= IEEE80211_NUM_ACS)
1291                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1292
1293         /* auth flags will be set later for TDLS,
1294          * and for unassociated stations that move to assocaited */
1295         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1296             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1297               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1298                 ret = sta_apply_auth_flags(local, sta, mask, set);
1299                 if (ret)
1300                         return ret;
1301         }
1302
1303         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1304                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1305                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1306                 else
1307                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1308         }
1309
1310         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1311                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1312                 if (set & BIT(NL80211_STA_FLAG_MFP))
1313                         set_sta_flag(sta, WLAN_STA_MFP);
1314                 else
1315                         clear_sta_flag(sta, WLAN_STA_MFP);
1316         }
1317
1318         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1319                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1320                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1321                 else
1322                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1323         }
1324
1325         /* mark TDLS channel switch support, if the AP allows it */
1326         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1327             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1328             params->ext_capab_len >= 4 &&
1329             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1330                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1331
1332         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1333             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1334             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1335             params->ext_capab_len >= 8 &&
1336             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1337                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1338
1339         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1340                 sta->sta.uapsd_queues = params->uapsd_queues;
1341                 sta->sta.max_sp = params->max_sp;
1342         }
1343
1344         /* The sender might not have sent the last bit, consider it to be 0 */
1345         if (params->ext_capab_len >= 8) {
1346                 u8 val = (params->ext_capab[7] &
1347                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1348
1349                 /* we did get all the bits, take the MSB as well */
1350                 if (params->ext_capab_len >= 9) {
1351                         u8 val_msb = params->ext_capab[8] &
1352                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1353                         val_msb <<= 1;
1354                         val |= val_msb;
1355                 }
1356
1357                 switch (val) {
1358                 case 1:
1359                         sta->sta.max_amsdu_subframes = 32;
1360                         break;
1361                 case 2:
1362                         sta->sta.max_amsdu_subframes = 16;
1363                         break;
1364                 case 3:
1365                         sta->sta.max_amsdu_subframes = 8;
1366                         break;
1367                 default:
1368                         sta->sta.max_amsdu_subframes = 0;
1369                 }
1370         }
1371
1372         /*
1373          * cfg80211 validates this (1-2007) and allows setting the AID
1374          * only when creating a new station entry
1375          */
1376         if (params->aid)
1377                 sta->sta.aid = params->aid;
1378
1379         /*
1380          * Some of the following updates would be racy if called on an
1381          * existing station, via ieee80211_change_station(). However,
1382          * all such changes are rejected by cfg80211 except for updates
1383          * changing the supported rates on an existing but not yet used
1384          * TDLS peer.
1385          */
1386
1387         if (params->listen_interval >= 0)
1388                 sta->listen_interval = params->listen_interval;
1389
1390         if (params->supported_rates) {
1391                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1392                                          sband, params->supported_rates,
1393                                          params->supported_rates_len,
1394                                          &sta->sta.supp_rates[sband->band]);
1395         }
1396
1397         if (params->ht_capa)
1398                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1399                                                   params->ht_capa, sta);
1400
1401         /* VHT can override some HT caps such as the A-MSDU max length */
1402         if (params->vht_capa)
1403                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1404                                                     params->vht_capa, sta);
1405
1406         if (params->opmode_notif_used) {
1407                 /* returned value is only needed for rc update, but the
1408                  * rc isn't initialized here yet, so ignore it
1409                  */
1410                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1411                                               sband->band);
1412         }
1413
1414         if (params->support_p2p_ps >= 0)
1415                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1416
1417         if (ieee80211_vif_is_mesh(&sdata->vif))
1418                 sta_apply_mesh_params(local, sta, params);
1419
1420         /* set the STA state after all sta info from usermode has been set */
1421         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1422             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1423                 ret = sta_apply_auth_flags(local, sta, mask, set);
1424                 if (ret)
1425                         return ret;
1426         }
1427
1428         return 0;
1429 }
1430
1431 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1432                                  const u8 *mac,
1433                                  struct station_parameters *params)
1434 {
1435         struct ieee80211_local *local = wiphy_priv(wiphy);
1436         struct sta_info *sta;
1437         struct ieee80211_sub_if_data *sdata;
1438         int err;
1439         int layer2_update;
1440
1441         if (params->vlan) {
1442                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1443
1444                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1445                     sdata->vif.type != NL80211_IFTYPE_AP)
1446                         return -EINVAL;
1447         } else
1448                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449
1450         if (ether_addr_equal(mac, sdata->vif.addr))
1451                 return -EINVAL;
1452
1453         if (is_multicast_ether_addr(mac))
1454                 return -EINVAL;
1455
1456         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1457         if (!sta)
1458                 return -ENOMEM;
1459
1460         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1461                 sta->sta.tdls = true;
1462
1463         err = sta_apply_parameters(local, sta, params);
1464         if (err) {
1465                 sta_info_free(local, sta);
1466                 return err;
1467         }
1468
1469         /*
1470          * for TDLS and for unassociated station, rate control should be
1471          * initialized only when rates are known and station is marked
1472          * authorized/associated
1473          */
1474         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1475             test_sta_flag(sta, WLAN_STA_ASSOC))
1476                 rate_control_rate_init(sta);
1477
1478         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1479                 sdata->vif.type == NL80211_IFTYPE_AP;
1480
1481         err = sta_info_insert_rcu(sta);
1482         if (err) {
1483                 rcu_read_unlock();
1484                 return err;
1485         }
1486
1487         if (layer2_update)
1488                 ieee80211_send_layer2_update(sta);
1489
1490         rcu_read_unlock();
1491
1492         return 0;
1493 }
1494
1495 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1496                                  struct station_del_parameters *params)
1497 {
1498         struct ieee80211_sub_if_data *sdata;
1499
1500         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1501
1502         if (params->mac)
1503                 return sta_info_destroy_addr_bss(sdata, params->mac);
1504
1505         sta_info_flush(sdata);
1506         return 0;
1507 }
1508
1509 static int ieee80211_change_station(struct wiphy *wiphy,
1510                                     struct net_device *dev, const u8 *mac,
1511                                     struct station_parameters *params)
1512 {
1513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1514         struct ieee80211_local *local = wiphy_priv(wiphy);
1515         struct sta_info *sta;
1516         struct ieee80211_sub_if_data *vlansdata;
1517         enum cfg80211_station_type statype;
1518         int err;
1519
1520         mutex_lock(&local->sta_mtx);
1521
1522         sta = sta_info_get_bss(sdata, mac);
1523         if (!sta) {
1524                 err = -ENOENT;
1525                 goto out_err;
1526         }
1527
1528         switch (sdata->vif.type) {
1529         case NL80211_IFTYPE_MESH_POINT:
1530                 if (sdata->u.mesh.user_mpm)
1531                         statype = CFG80211_STA_MESH_PEER_USER;
1532                 else
1533                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1534                 break;
1535         case NL80211_IFTYPE_ADHOC:
1536                 statype = CFG80211_STA_IBSS;
1537                 break;
1538         case NL80211_IFTYPE_STATION:
1539                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1540                         statype = CFG80211_STA_AP_STA;
1541                         break;
1542                 }
1543                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1544                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1545                 else
1546                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1547                 break;
1548         case NL80211_IFTYPE_AP:
1549         case NL80211_IFTYPE_AP_VLAN:
1550                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1551                         statype = CFG80211_STA_AP_CLIENT;
1552                 else
1553                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1554                 break;
1555         default:
1556                 err = -EOPNOTSUPP;
1557                 goto out_err;
1558         }
1559
1560         err = cfg80211_check_station_change(wiphy, params, statype);
1561         if (err)
1562                 goto out_err;
1563
1564         if (params->vlan && params->vlan != sta->sdata->dev) {
1565                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1566
1567                 if (params->vlan->ieee80211_ptr->use_4addr) {
1568                         if (vlansdata->u.vlan.sta) {
1569                                 err = -EBUSY;
1570                                 goto out_err;
1571                         }
1572
1573                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1574                         __ieee80211_check_fast_rx_iface(vlansdata);
1575                 }
1576
1577                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1578                     sta->sdata->u.vlan.sta)
1579                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1580
1581                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1582                         ieee80211_vif_dec_num_mcast(sta->sdata);
1583
1584                 sta->sdata = vlansdata;
1585                 ieee80211_check_fast_xmit(sta);
1586
1587                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1588                         ieee80211_vif_inc_num_mcast(sta->sdata);
1589
1590                 ieee80211_send_layer2_update(sta);
1591         }
1592
1593         err = sta_apply_parameters(local, sta, params);
1594         if (err)
1595                 goto out_err;
1596
1597         mutex_unlock(&local->sta_mtx);
1598
1599         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1600              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1601             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1602             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1603             sta_info_tx_streams(sta) != 1) {
1604                 ht_dbg(sta->sdata,
1605                        "%pM just authorized and MIMO capable - update SMPS\n",
1606                        sta->sta.addr);
1607                 ieee80211_send_smps_action(sta->sdata,
1608                         sta->sdata->bss->req_smps,
1609                         sta->sta.addr,
1610                         sta->sdata->vif.bss_conf.bssid);
1611         }
1612
1613         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1614             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1615                 ieee80211_recalc_ps(local);
1616                 ieee80211_recalc_ps_vif(sdata);
1617         }
1618
1619         return 0;
1620 out_err:
1621         mutex_unlock(&local->sta_mtx);
1622         return err;
1623 }
1624
1625 #ifdef CONFIG_MAC80211_MESH
1626 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1627                                const u8 *dst, const u8 *next_hop)
1628 {
1629         struct ieee80211_sub_if_data *sdata;
1630         struct mesh_path *mpath;
1631         struct sta_info *sta;
1632
1633         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1634
1635         rcu_read_lock();
1636         sta = sta_info_get(sdata, next_hop);
1637         if (!sta) {
1638                 rcu_read_unlock();
1639                 return -ENOENT;
1640         }
1641
1642         mpath = mesh_path_add(sdata, dst);
1643         if (IS_ERR(mpath)) {
1644                 rcu_read_unlock();
1645                 return PTR_ERR(mpath);
1646         }
1647
1648         mesh_path_fix_nexthop(mpath, sta);
1649
1650         rcu_read_unlock();
1651         return 0;
1652 }
1653
1654 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1655                                const u8 *dst)
1656 {
1657         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1658
1659         if (dst)
1660                 return mesh_path_del(sdata, dst);
1661
1662         mesh_path_flush_by_iface(sdata);
1663         return 0;
1664 }
1665
1666 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1667                                   const u8 *dst, const u8 *next_hop)
1668 {
1669         struct ieee80211_sub_if_data *sdata;
1670         struct mesh_path *mpath;
1671         struct sta_info *sta;
1672
1673         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1674
1675         rcu_read_lock();
1676
1677         sta = sta_info_get(sdata, next_hop);
1678         if (!sta) {
1679                 rcu_read_unlock();
1680                 return -ENOENT;
1681         }
1682
1683         mpath = mesh_path_lookup(sdata, dst);
1684         if (!mpath) {
1685                 rcu_read_unlock();
1686                 return -ENOENT;
1687         }
1688
1689         mesh_path_fix_nexthop(mpath, sta);
1690
1691         rcu_read_unlock();
1692         return 0;
1693 }
1694
1695 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1696                             struct mpath_info *pinfo)
1697 {
1698         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1699
1700         if (next_hop_sta)
1701                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1702         else
1703                 eth_zero_addr(next_hop);
1704
1705         memset(pinfo, 0, sizeof(*pinfo));
1706
1707         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1708
1709         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1710                         MPATH_INFO_SN |
1711                         MPATH_INFO_METRIC |
1712                         MPATH_INFO_EXPTIME |
1713                         MPATH_INFO_DISCOVERY_TIMEOUT |
1714                         MPATH_INFO_DISCOVERY_RETRIES |
1715                         MPATH_INFO_FLAGS;
1716
1717         pinfo->frame_qlen = mpath->frame_queue.qlen;
1718         pinfo->sn = mpath->sn;
1719         pinfo->metric = mpath->metric;
1720         if (time_before(jiffies, mpath->exp_time))
1721                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1722         pinfo->discovery_timeout =
1723                         jiffies_to_msecs(mpath->discovery_timeout);
1724         pinfo->discovery_retries = mpath->discovery_retries;
1725         if (mpath->flags & MESH_PATH_ACTIVE)
1726                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1727         if (mpath->flags & MESH_PATH_RESOLVING)
1728                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1729         if (mpath->flags & MESH_PATH_SN_VALID)
1730                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1731         if (mpath->flags & MESH_PATH_FIXED)
1732                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1733         if (mpath->flags & MESH_PATH_RESOLVED)
1734                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1735 }
1736
1737 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1738                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1739
1740 {
1741         struct ieee80211_sub_if_data *sdata;
1742         struct mesh_path *mpath;
1743
1744         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1745
1746         rcu_read_lock();
1747         mpath = mesh_path_lookup(sdata, dst);
1748         if (!mpath) {
1749                 rcu_read_unlock();
1750                 return -ENOENT;
1751         }
1752         memcpy(dst, mpath->dst, ETH_ALEN);
1753         mpath_set_pinfo(mpath, next_hop, pinfo);
1754         rcu_read_unlock();
1755         return 0;
1756 }
1757
1758 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1759                                 int idx, u8 *dst, u8 *next_hop,
1760                                 struct mpath_info *pinfo)
1761 {
1762         struct ieee80211_sub_if_data *sdata;
1763         struct mesh_path *mpath;
1764
1765         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1766
1767         rcu_read_lock();
1768         mpath = mesh_path_lookup_by_idx(sdata, idx);
1769         if (!mpath) {
1770                 rcu_read_unlock();
1771                 return -ENOENT;
1772         }
1773         memcpy(dst, mpath->dst, ETH_ALEN);
1774         mpath_set_pinfo(mpath, next_hop, pinfo);
1775         rcu_read_unlock();
1776         return 0;
1777 }
1778
1779 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1780                           struct mpath_info *pinfo)
1781 {
1782         memset(pinfo, 0, sizeof(*pinfo));
1783         memcpy(mpp, mpath->mpp, ETH_ALEN);
1784
1785         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1786 }
1787
1788 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1789                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1790
1791 {
1792         struct ieee80211_sub_if_data *sdata;
1793         struct mesh_path *mpath;
1794
1795         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1796
1797         rcu_read_lock();
1798         mpath = mpp_path_lookup(sdata, dst);
1799         if (!mpath) {
1800                 rcu_read_unlock();
1801                 return -ENOENT;
1802         }
1803         memcpy(dst, mpath->dst, ETH_ALEN);
1804         mpp_set_pinfo(mpath, mpp, pinfo);
1805         rcu_read_unlock();
1806         return 0;
1807 }
1808
1809 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1810                               int idx, u8 *dst, u8 *mpp,
1811                               struct mpath_info *pinfo)
1812 {
1813         struct ieee80211_sub_if_data *sdata;
1814         struct mesh_path *mpath;
1815
1816         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1817
1818         rcu_read_lock();
1819         mpath = mpp_path_lookup_by_idx(sdata, idx);
1820         if (!mpath) {
1821                 rcu_read_unlock();
1822                 return -ENOENT;
1823         }
1824         memcpy(dst, mpath->dst, ETH_ALEN);
1825         mpp_set_pinfo(mpath, mpp, pinfo);
1826         rcu_read_unlock();
1827         return 0;
1828 }
1829
1830 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1831                                 struct net_device *dev,
1832                                 struct mesh_config *conf)
1833 {
1834         struct ieee80211_sub_if_data *sdata;
1835         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836
1837         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1838         return 0;
1839 }
1840
1841 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1842 {
1843         return (mask >> (parm-1)) & 0x1;
1844 }
1845
1846 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1847                 const struct mesh_setup *setup)
1848 {
1849         u8 *new_ie;
1850         const u8 *old_ie;
1851         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1852                                         struct ieee80211_sub_if_data, u.mesh);
1853
1854         /* allocate information elements */
1855         new_ie = NULL;
1856         old_ie = ifmsh->ie;
1857
1858         if (setup->ie_len) {
1859                 new_ie = kmemdup(setup->ie, setup->ie_len,
1860                                 GFP_KERNEL);
1861                 if (!new_ie)
1862                         return -ENOMEM;
1863         }
1864         ifmsh->ie_len = setup->ie_len;
1865         ifmsh->ie = new_ie;
1866         kfree(old_ie);
1867
1868         /* now copy the rest of the setup parameters */
1869         ifmsh->mesh_id_len = setup->mesh_id_len;
1870         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1871         ifmsh->mesh_sp_id = setup->sync_method;
1872         ifmsh->mesh_pp_id = setup->path_sel_proto;
1873         ifmsh->mesh_pm_id = setup->path_metric;
1874         ifmsh->user_mpm = setup->user_mpm;
1875         ifmsh->mesh_auth_id = setup->auth_id;
1876         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1877         if (setup->is_authenticated)
1878                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1879         if (setup->is_secure)
1880                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1881
1882         /* mcast rate setting in Mesh Node */
1883         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1884                                                 sizeof(setup->mcast_rate));
1885         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1886
1887         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1888         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1889
1890         return 0;
1891 }
1892
1893 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1894                                         struct net_device *dev, u32 mask,
1895                                         const struct mesh_config *nconf)
1896 {
1897         struct mesh_config *conf;
1898         struct ieee80211_sub_if_data *sdata;
1899         struct ieee80211_if_mesh *ifmsh;
1900
1901         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1902         ifmsh = &sdata->u.mesh;
1903
1904         /* Set the config options which we are interested in setting */
1905         conf = &(sdata->u.mesh.mshcfg);
1906         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1907                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1908         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1909                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1910         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1911                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1912         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1913                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1914         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1915                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1916         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1917                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1919                 conf->element_ttl = nconf->element_ttl;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1921                 if (ifmsh->user_mpm)
1922                         return -EBUSY;
1923                 conf->auto_open_plinks = nconf->auto_open_plinks;
1924         }
1925         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1926                 conf->dot11MeshNbrOffsetMaxNeighbor =
1927                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1928         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1929                 conf->dot11MeshHWMPmaxPREQretries =
1930                         nconf->dot11MeshHWMPmaxPREQretries;
1931         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1932                 conf->path_refresh_time = nconf->path_refresh_time;
1933         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1934                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1935         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1936                 conf->dot11MeshHWMPactivePathTimeout =
1937                         nconf->dot11MeshHWMPactivePathTimeout;
1938         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1939                 conf->dot11MeshHWMPpreqMinInterval =
1940                         nconf->dot11MeshHWMPpreqMinInterval;
1941         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1942                 conf->dot11MeshHWMPperrMinInterval =
1943                         nconf->dot11MeshHWMPperrMinInterval;
1944         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1945                            mask))
1946                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1947                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1948         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1949                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1950                 ieee80211_mesh_root_setup(ifmsh);
1951         }
1952         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1953                 /* our current gate announcement implementation rides on root
1954                  * announcements, so require this ifmsh to also be a root node
1955                  * */
1956                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1957                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1958                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1959                         ieee80211_mesh_root_setup(ifmsh);
1960                 }
1961                 conf->dot11MeshGateAnnouncementProtocol =
1962                         nconf->dot11MeshGateAnnouncementProtocol;
1963         }
1964         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1965                 conf->dot11MeshHWMPRannInterval =
1966                         nconf->dot11MeshHWMPRannInterval;
1967         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1968                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1969         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1970                 /* our RSSI threshold implementation is supported only for
1971                  * devices that report signal in dBm.
1972                  */
1973                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1974                         return -ENOTSUPP;
1975                 conf->rssi_threshold = nconf->rssi_threshold;
1976         }
1977         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1978                 conf->ht_opmode = nconf->ht_opmode;
1979                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1980                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1981         }
1982         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1983                 conf->dot11MeshHWMPactivePathToRootTimeout =
1984                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1985         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1986                 conf->dot11MeshHWMProotInterval =
1987                         nconf->dot11MeshHWMProotInterval;
1988         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1989                 conf->dot11MeshHWMPconfirmationInterval =
1990                         nconf->dot11MeshHWMPconfirmationInterval;
1991         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1992                 conf->power_mode = nconf->power_mode;
1993                 ieee80211_mps_local_status_update(sdata);
1994         }
1995         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1996                 conf->dot11MeshAwakeWindowDuration =
1997                         nconf->dot11MeshAwakeWindowDuration;
1998         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1999                 conf->plink_timeout = nconf->plink_timeout;
2000         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2001         return 0;
2002 }
2003
2004 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2005                                const struct mesh_config *conf,
2006                                const struct mesh_setup *setup)
2007 {
2008         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2009         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2010         int err;
2011
2012         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2013         err = copy_mesh_setup(ifmsh, setup);
2014         if (err)
2015                 return err;
2016
2017         /* can mesh use other SMPS modes? */
2018         sdata->smps_mode = IEEE80211_SMPS_OFF;
2019         sdata->needed_rx_chains = sdata->local->rx_chains;
2020
2021         mutex_lock(&sdata->local->mtx);
2022         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2023                                         IEEE80211_CHANCTX_SHARED);
2024         mutex_unlock(&sdata->local->mtx);
2025         if (err)
2026                 return err;
2027
2028         return ieee80211_start_mesh(sdata);
2029 }
2030
2031 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2032 {
2033         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2034
2035         ieee80211_stop_mesh(sdata);
2036         mutex_lock(&sdata->local->mtx);
2037         ieee80211_vif_release_channel(sdata);
2038         mutex_unlock(&sdata->local->mtx);
2039
2040         return 0;
2041 }
2042 #endif
2043
2044 static int ieee80211_change_bss(struct wiphy *wiphy,
2045                                 struct net_device *dev,
2046                                 struct bss_parameters *params)
2047 {
2048         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2049         struct ieee80211_supported_band *sband;
2050         u32 changed = 0;
2051
2052         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2053                 return -ENOENT;
2054
2055         sband = ieee80211_get_sband(sdata);
2056         if (!sband)
2057                 return -EINVAL;
2058
2059         if (params->use_cts_prot >= 0) {
2060                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2061                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2062         }
2063         if (params->use_short_preamble >= 0) {
2064                 sdata->vif.bss_conf.use_short_preamble =
2065                         params->use_short_preamble;
2066                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2067         }
2068
2069         if (!sdata->vif.bss_conf.use_short_slot &&
2070             sband->band == NL80211_BAND_5GHZ) {
2071                 sdata->vif.bss_conf.use_short_slot = true;
2072                 changed |= BSS_CHANGED_ERP_SLOT;
2073         }
2074
2075         if (params->use_short_slot_time >= 0) {
2076                 sdata->vif.bss_conf.use_short_slot =
2077                         params->use_short_slot_time;
2078                 changed |= BSS_CHANGED_ERP_SLOT;
2079         }
2080
2081         if (params->basic_rates) {
2082                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2083                                          wiphy->bands[sband->band],
2084                                          params->basic_rates,
2085                                          params->basic_rates_len,
2086                                          &sdata->vif.bss_conf.basic_rates);
2087                 changed |= BSS_CHANGED_BASIC_RATES;
2088                 ieee80211_check_rate_mask(sdata);
2089         }
2090
2091         if (params->ap_isolate >= 0) {
2092                 if (params->ap_isolate)
2093                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2094                 else
2095                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2096                 ieee80211_check_fast_rx_iface(sdata);
2097         }
2098
2099         if (params->ht_opmode >= 0) {
2100                 sdata->vif.bss_conf.ht_operation_mode =
2101                         (u16) params->ht_opmode;
2102                 changed |= BSS_CHANGED_HT;
2103         }
2104
2105         if (params->p2p_ctwindow >= 0) {
2106                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2107                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2108                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2109                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2110                 changed |= BSS_CHANGED_P2P_PS;
2111         }
2112
2113         if (params->p2p_opp_ps > 0) {
2114                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2115                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2116                 changed |= BSS_CHANGED_P2P_PS;
2117         } else if (params->p2p_opp_ps == 0) {
2118                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2119                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2120                 changed |= BSS_CHANGED_P2P_PS;
2121         }
2122
2123         ieee80211_bss_info_change_notify(sdata, changed);
2124
2125         return 0;
2126 }
2127
2128 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2129                                     struct net_device *dev,
2130                                     struct ieee80211_txq_params *params)
2131 {
2132         struct ieee80211_local *local = wiphy_priv(wiphy);
2133         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2134         struct ieee80211_tx_queue_params p;
2135
2136         if (!local->ops->conf_tx)
2137                 return -EOPNOTSUPP;
2138
2139         if (local->hw.queues < IEEE80211_NUM_ACS)
2140                 return -EOPNOTSUPP;
2141
2142         memset(&p, 0, sizeof(p));
2143         p.aifs = params->aifs;
2144         p.cw_max = params->cwmax;
2145         p.cw_min = params->cwmin;
2146         p.txop = params->txop;
2147
2148         /*
2149          * Setting tx queue params disables u-apsd because it's only
2150          * called in master mode.
2151          */
2152         p.uapsd = false;
2153
2154         sdata->tx_conf[params->ac] = p;
2155         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2156                 wiphy_debug(local->hw.wiphy,
2157                             "failed to set TX queue parameters for AC %d\n",
2158                             params->ac);
2159                 return -EINVAL;
2160         }
2161
2162         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2163
2164         return 0;
2165 }
2166
2167 #ifdef CONFIG_PM
2168 static int ieee80211_suspend(struct wiphy *wiphy,
2169                              struct cfg80211_wowlan *wowlan)
2170 {
2171         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2172 }
2173
2174 static int ieee80211_resume(struct wiphy *wiphy)
2175 {
2176         return __ieee80211_resume(wiphy_priv(wiphy));
2177 }
2178 #else
2179 #define ieee80211_suspend NULL
2180 #define ieee80211_resume NULL
2181 #endif
2182
2183 static int ieee80211_scan(struct wiphy *wiphy,
2184                           struct cfg80211_scan_request *req)
2185 {
2186         struct ieee80211_sub_if_data *sdata;
2187
2188         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2189
2190         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2191         case NL80211_IFTYPE_STATION:
2192         case NL80211_IFTYPE_ADHOC:
2193         case NL80211_IFTYPE_MESH_POINT:
2194         case NL80211_IFTYPE_P2P_CLIENT:
2195         case NL80211_IFTYPE_P2P_DEVICE:
2196                 break;
2197         case NL80211_IFTYPE_P2P_GO:
2198                 if (sdata->local->ops->hw_scan)
2199                         break;
2200                 /*
2201                  * FIXME: implement NoA while scanning in software,
2202                  * for now fall through to allow scanning only when
2203                  * beaconing hasn't been configured yet
2204                  */
2205         case NL80211_IFTYPE_AP:
2206                 /*
2207                  * If the scan has been forced (and the driver supports
2208                  * forcing), don't care about being beaconing already.
2209                  * This will create problems to the attached stations (e.g. all
2210                  * the  frames sent while scanning on other channel will be
2211                  * lost)
2212                  */
2213                 if (sdata->u.ap.beacon &&
2214                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2215                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2216                         return -EOPNOTSUPP;
2217                 break;
2218         case NL80211_IFTYPE_NAN:
2219         default:
2220                 return -EOPNOTSUPP;
2221         }
2222
2223         return ieee80211_request_scan(sdata, req);
2224 }
2225
2226 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2227 {
2228         ieee80211_scan_cancel(wiphy_priv(wiphy));
2229 }
2230
2231 static int
2232 ieee80211_sched_scan_start(struct wiphy *wiphy,
2233                            struct net_device *dev,
2234                            struct cfg80211_sched_scan_request *req)
2235 {
2236         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2237
2238         if (!sdata->local->ops->sched_scan_start)
2239                 return -EOPNOTSUPP;
2240
2241         return ieee80211_request_sched_scan_start(sdata, req);
2242 }
2243
2244 static int
2245 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2246                           u64 reqid)
2247 {
2248         struct ieee80211_local *local = wiphy_priv(wiphy);
2249
2250         if (!local->ops->sched_scan_stop)
2251                 return -EOPNOTSUPP;
2252
2253         return ieee80211_request_sched_scan_stop(local);
2254 }
2255
2256 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2257                           struct cfg80211_auth_request *req)
2258 {
2259         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2260 }
2261
2262 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2263                            struct cfg80211_assoc_request *req)
2264 {
2265         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2266 }
2267
2268 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2269                             struct cfg80211_deauth_request *req)
2270 {
2271         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2272 }
2273
2274 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2275                               struct cfg80211_disassoc_request *req)
2276 {
2277         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2278 }
2279
2280 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2281                                struct cfg80211_ibss_params *params)
2282 {
2283         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2284 }
2285
2286 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2287 {
2288         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2289 }
2290
2291 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2292                               struct ocb_setup *setup)
2293 {
2294         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2295 }
2296
2297 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2298 {
2299         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2300 }
2301
2302 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2303                                     int rate[NUM_NL80211_BANDS])
2304 {
2305         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2306
2307         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2308                sizeof(int) * NUM_NL80211_BANDS);
2309
2310         return 0;
2311 }
2312
2313 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2314 {
2315         struct ieee80211_local *local = wiphy_priv(wiphy);
2316         int err;
2317
2318         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2319                 ieee80211_check_fast_xmit_all(local);
2320
2321                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2322
2323                 if (err) {
2324                         ieee80211_check_fast_xmit_all(local);
2325                         return err;
2326                 }
2327         }
2328
2329         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2330             (changed & WIPHY_PARAM_DYN_ACK)) {
2331                 s16 coverage_class;
2332
2333                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2334                                         wiphy->coverage_class : -1;
2335                 err = drv_set_coverage_class(local, coverage_class);
2336
2337                 if (err)
2338                         return err;
2339         }
2340
2341         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2342                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2343
2344                 if (err)
2345                         return err;
2346         }
2347
2348         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2349                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2350                         return -EINVAL;
2351                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2352         }
2353         if (changed & WIPHY_PARAM_RETRY_LONG) {
2354                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2355                         return -EINVAL;
2356                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2357         }
2358         if (changed &
2359             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2360                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2361
2362         return 0;
2363 }
2364
2365 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2366                                   struct wireless_dev *wdev,
2367                                   enum nl80211_tx_power_setting type, int mbm)
2368 {
2369         struct ieee80211_local *local = wiphy_priv(wiphy);
2370         struct ieee80211_sub_if_data *sdata;
2371         enum nl80211_tx_power_setting txp_type = type;
2372         bool update_txp_type = false;
2373
2374         if (wdev) {
2375                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2376
2377                 switch (type) {
2378                 case NL80211_TX_POWER_AUTOMATIC:
2379                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2380                         txp_type = NL80211_TX_POWER_LIMITED;
2381                         break;
2382                 case NL80211_TX_POWER_LIMITED:
2383                 case NL80211_TX_POWER_FIXED:
2384                         if (mbm < 0 || (mbm % 100))
2385                                 return -EOPNOTSUPP;
2386                         sdata->user_power_level = MBM_TO_DBM(mbm);
2387                         break;
2388                 }
2389
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
2395                 ieee80211_recalc_txpower(sdata, update_txp_type);
2396
2397                 return 0;
2398         }
2399
2400         switch (type) {
2401         case NL80211_TX_POWER_AUTOMATIC:
2402                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2403                 txp_type = NL80211_TX_POWER_LIMITED;
2404                 break;
2405         case NL80211_TX_POWER_LIMITED:
2406         case NL80211_TX_POWER_FIXED:
2407                 if (mbm < 0 || (mbm % 100))
2408                         return -EOPNOTSUPP;
2409                 local->user_power_level = MBM_TO_DBM(mbm);
2410                 break;
2411         }
2412
2413         mutex_lock(&local->iflist_mtx);
2414         list_for_each_entry(sdata, &local->interfaces, list) {
2415                 sdata->user_power_level = local->user_power_level;
2416                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2417                         update_txp_type = true;
2418                 sdata->vif.bss_conf.txpower_type = txp_type;
2419         }
2420         list_for_each_entry(sdata, &local->interfaces, list)
2421                 ieee80211_recalc_txpower(sdata, update_txp_type);
2422         mutex_unlock(&local->iflist_mtx);
2423
2424         return 0;
2425 }
2426
2427 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2428                                   struct wireless_dev *wdev,
2429                                   int *dbm)
2430 {
2431         struct ieee80211_local *local = wiphy_priv(wiphy);
2432         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2433
2434         if (local->ops->get_txpower)
2435                 return drv_get_txpower(local, sdata, dbm);
2436
2437         if (!local->use_chanctx)
2438                 *dbm = local->hw.conf.power_level;
2439         else
2440                 *dbm = sdata->vif.bss_conf.txpower;
2441
2442         return 0;
2443 }
2444
2445 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2446                                   const u8 *addr)
2447 {
2448         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2449
2450         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2451
2452         return 0;
2453 }
2454
2455 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2456 {
2457         struct ieee80211_local *local = wiphy_priv(wiphy);
2458
2459         drv_rfkill_poll(local);
2460 }
2461
2462 #ifdef CONFIG_NL80211_TESTMODE
2463 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2464                                   struct wireless_dev *wdev,
2465                                   void *data, int len)
2466 {
2467         struct ieee80211_local *local = wiphy_priv(wiphy);
2468         struct ieee80211_vif *vif = NULL;
2469
2470         if (!local->ops->testmode_cmd)
2471                 return -EOPNOTSUPP;
2472
2473         if (wdev) {
2474                 struct ieee80211_sub_if_data *sdata;
2475
2476                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2477                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2478                         vif = &sdata->vif;
2479         }
2480
2481         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2482 }
2483
2484 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2485                                    struct sk_buff *skb,
2486                                    struct netlink_callback *cb,
2487                                    void *data, int len)
2488 {
2489         struct ieee80211_local *local = wiphy_priv(wiphy);
2490
2491         if (!local->ops->testmode_dump)
2492                 return -EOPNOTSUPP;
2493
2494         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2495 }
2496 #endif
2497
2498 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2499                                 enum ieee80211_smps_mode smps_mode)
2500 {
2501         struct sta_info *sta;
2502         enum ieee80211_smps_mode old_req;
2503
2504         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2505                 return -EINVAL;
2506
2507         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2508                 return 0;
2509
2510         old_req = sdata->u.ap.req_smps;
2511         sdata->u.ap.req_smps = smps_mode;
2512
2513         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2514         if (old_req == smps_mode ||
2515             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2516                 return 0;
2517
2518         ht_dbg(sdata,
2519                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2520                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2521
2522         mutex_lock(&sdata->local->sta_mtx);
2523         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2524                 /*
2525                  * Only stations associated to our AP and
2526                  * associated VLANs
2527                  */
2528                 if (sta->sdata->bss != &sdata->u.ap)
2529                         continue;
2530
2531                 /* This station doesn't support MIMO - skip it */
2532                 if (sta_info_tx_streams(sta) == 1)
2533                         continue;
2534
2535                 /*
2536                  * Don't wake up a STA just to send the action frame
2537                  * unless we are getting more restrictive.
2538                  */
2539                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2540                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2541                                                    smps_mode)) {
2542                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2543                                sta->sta.addr);
2544                         continue;
2545                 }
2546
2547                 /*
2548                  * If the STA is not authorized, wait until it gets
2549                  * authorized and the action frame will be sent then.
2550                  */
2551                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2552                         continue;
2553
2554                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2555                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2556                                            sdata->vif.bss_conf.bssid);
2557         }
2558         mutex_unlock(&sdata->local->sta_mtx);
2559
2560         sdata->smps_mode = smps_mode;
2561         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2562
2563         return 0;
2564 }
2565
2566 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2567                                  enum ieee80211_smps_mode smps_mode)
2568 {
2569         const u8 *ap;
2570         enum ieee80211_smps_mode old_req;
2571         int err;
2572         struct sta_info *sta;
2573         bool tdls_peer_found = false;
2574
2575         lockdep_assert_held(&sdata->wdev.mtx);
2576
2577         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2578                 return -EINVAL;
2579
2580         old_req = sdata->u.mgd.req_smps;
2581         sdata->u.mgd.req_smps = smps_mode;
2582
2583         if (old_req == smps_mode &&
2584             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2585                 return 0;
2586
2587         /*
2588          * If not associated, or current association is not an HT
2589          * association, there's no need to do anything, just store
2590          * the new value until we associate.
2591          */
2592         if (!sdata->u.mgd.associated ||
2593             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2594                 return 0;
2595
2596         ap = sdata->u.mgd.associated->bssid;
2597
2598         rcu_read_lock();
2599         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2600                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2601                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2602                         continue;
2603
2604                 tdls_peer_found = true;
2605                 break;
2606         }
2607         rcu_read_unlock();
2608
2609         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2610                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2611                         smps_mode = IEEE80211_SMPS_OFF;
2612                 else
2613                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2614         }
2615
2616         /* send SM PS frame to AP */
2617         err = ieee80211_send_smps_action(sdata, smps_mode,
2618                                          ap, ap);
2619         if (err)
2620                 sdata->u.mgd.req_smps = old_req;
2621         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2622                 ieee80211_teardown_tdls_peers(sdata);
2623
2624         return err;
2625 }
2626
2627 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2628                                     bool enabled, int timeout)
2629 {
2630         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2631         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2632
2633         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2634                 return -EOPNOTSUPP;
2635
2636         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2637                 return -EOPNOTSUPP;
2638
2639         if (enabled == sdata->u.mgd.powersave &&
2640             timeout == local->dynamic_ps_forced_timeout)
2641                 return 0;
2642
2643         sdata->u.mgd.powersave = enabled;
2644         local->dynamic_ps_forced_timeout = timeout;
2645
2646         /* no change, but if automatic follow powersave */
2647         sdata_lock(sdata);
2648         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2649         sdata_unlock(sdata);
2650
2651         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2652                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2653
2654         ieee80211_recalc_ps(local);
2655         ieee80211_recalc_ps_vif(sdata);
2656
2657         return 0;
2658 }
2659
2660 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2661                                          struct net_device *dev,
2662                                          s32 rssi_thold, u32 rssi_hyst)
2663 {
2664         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2665         struct ieee80211_vif *vif = &sdata->vif;
2666         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2667
2668         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2669             rssi_hyst == bss_conf->cqm_rssi_hyst)
2670                 return 0;
2671
2672         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2673             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2674                 return -EOPNOTSUPP;
2675
2676         bss_conf->cqm_rssi_thold = rssi_thold;
2677         bss_conf->cqm_rssi_hyst = rssi_hyst;
2678         bss_conf->cqm_rssi_low = 0;
2679         bss_conf->cqm_rssi_high = 0;
2680         sdata->u.mgd.last_cqm_event_signal = 0;
2681
2682         /* tell the driver upon association, unless already associated */
2683         if (sdata->u.mgd.associated &&
2684             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2685                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2686
2687         return 0;
2688 }
2689
2690 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2691                                                struct net_device *dev,
2692                                                s32 rssi_low, s32 rssi_high)
2693 {
2694         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2695         struct ieee80211_vif *vif = &sdata->vif;
2696         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2697
2698         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2699                 return -EOPNOTSUPP;
2700
2701         bss_conf->cqm_rssi_low = rssi_low;
2702         bss_conf->cqm_rssi_high = rssi_high;
2703         bss_conf->cqm_rssi_thold = 0;
2704         bss_conf->cqm_rssi_hyst = 0;
2705         sdata->u.mgd.last_cqm_event_signal = 0;
2706
2707         /* tell the driver upon association, unless already associated */
2708         if (sdata->u.mgd.associated &&
2709             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2710                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2711
2712         return 0;
2713 }
2714
2715 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2716                                       struct net_device *dev,
2717                                       const u8 *addr,
2718                                       const struct cfg80211_bitrate_mask *mask)
2719 {
2720         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2721         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2722         int i, ret;
2723
2724         if (!ieee80211_sdata_running(sdata))
2725                 return -ENETDOWN;
2726
2727         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2728                 ret = drv_set_bitrate_mask(local, sdata, mask);
2729                 if (ret)
2730                         return ret;
2731         }
2732
2733         /*
2734          * If active validate the setting and reject it if it doesn't leave
2735          * at least one basic rate usable, since we really have to be able
2736          * to send something, and if we're an AP we have to be able to do
2737          * so at a basic rate so that all clients can receive it.
2738          */
2739         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2740             sdata->vif.bss_conf.chandef.chan) {
2741                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2742                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2743
2744                 if (!(mask->control[band].legacy & basic_rates))
2745                         return -EINVAL;
2746         }
2747
2748         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2749                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2750                 int j;
2751
2752                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2753                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2754                        sizeof(mask->control[i].ht_mcs));
2755                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2756                        mask->control[i].vht_mcs,
2757                        sizeof(mask->control[i].vht_mcs));
2758
2759                 sdata->rc_has_mcs_mask[i] = false;
2760                 sdata->rc_has_vht_mcs_mask[i] = false;
2761                 if (!sband)
2762                         continue;
2763
2764                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2765                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2766                                 sdata->rc_has_mcs_mask[i] = true;
2767                                 break;
2768                         }
2769                 }
2770
2771                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2772                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2773                                 sdata->rc_has_vht_mcs_mask[i] = true;
2774                                 break;
2775                         }
2776                 }
2777         }
2778
2779         return 0;
2780 }
2781
2782 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2783                                            struct net_device *dev,
2784                                            struct cfg80211_chan_def *chandef,
2785                                            u32 cac_time_ms)
2786 {
2787         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2788         struct ieee80211_local *local = sdata->local;
2789         int err;
2790
2791         mutex_lock(&local->mtx);
2792         if (!list_empty(&local->roc_list) || local->scanning) {
2793                 err = -EBUSY;
2794                 goto out_unlock;
2795         }
2796
2797         /* whatever, but channel contexts should not complain about that one */
2798         sdata->smps_mode = IEEE80211_SMPS_OFF;
2799         sdata->needed_rx_chains = local->rx_chains;
2800
2801         err = ieee80211_vif_use_channel(sdata, chandef,
2802                                         IEEE80211_CHANCTX_SHARED);
2803         if (err)
2804                 goto out_unlock;
2805
2806         ieee80211_queue_delayed_work(&sdata->local->hw,
2807                                      &sdata->dfs_cac_timer_work,
2808                                      msecs_to_jiffies(cac_time_ms));
2809
2810  out_unlock:
2811         mutex_unlock(&local->mtx);
2812         return err;
2813 }
2814
2815 static struct cfg80211_beacon_data *
2816 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2817 {
2818         struct cfg80211_beacon_data *new_beacon;
2819         u8 *pos;
2820         int len;
2821
2822         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2823               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2824               beacon->probe_resp_len;
2825
2826         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2827         if (!new_beacon)
2828                 return NULL;
2829
2830         pos = (u8 *)(new_beacon + 1);
2831         if (beacon->head_len) {
2832                 new_beacon->head_len = beacon->head_len;
2833                 new_beacon->head = pos;
2834                 memcpy(pos, beacon->head, beacon->head_len);
2835                 pos += beacon->head_len;
2836         }
2837         if (beacon->tail_len) {
2838                 new_beacon->tail_len = beacon->tail_len;
2839                 new_beacon->tail = pos;
2840                 memcpy(pos, beacon->tail, beacon->tail_len);
2841                 pos += beacon->tail_len;
2842         }
2843         if (beacon->beacon_ies_len) {
2844                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2845                 new_beacon->beacon_ies = pos;
2846                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2847                 pos += beacon->beacon_ies_len;
2848         }
2849         if (beacon->proberesp_ies_len) {
2850                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2851                 new_beacon->proberesp_ies = pos;
2852                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2853                 pos += beacon->proberesp_ies_len;
2854         }
2855         if (beacon->assocresp_ies_len) {
2856                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2857                 new_beacon->assocresp_ies = pos;
2858                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2859                 pos += beacon->assocresp_ies_len;
2860         }
2861         if (beacon->probe_resp_len) {
2862                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2863                 beacon->probe_resp = pos;
2864                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2865                 pos += beacon->probe_resp_len;
2866         }
2867
2868         return new_beacon;
2869 }
2870
2871 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2872 {
2873         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2874
2875         ieee80211_queue_work(&sdata->local->hw,
2876                              &sdata->csa_finalize_work);
2877 }
2878 EXPORT_SYMBOL(ieee80211_csa_finish);
2879
2880 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2881                                           u32 *changed)
2882 {
2883         int err;
2884
2885         switch (sdata->vif.type) {
2886         case NL80211_IFTYPE_AP:
2887                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2888                                               NULL);
2889                 kfree(sdata->u.ap.next_beacon);
2890                 sdata->u.ap.next_beacon = NULL;
2891
2892                 if (err < 0)
2893                         return err;
2894                 *changed |= err;
2895                 break;
2896         case NL80211_IFTYPE_ADHOC:
2897                 err = ieee80211_ibss_finish_csa(sdata);
2898                 if (err < 0)
2899                         return err;
2900                 *changed |= err;
2901                 break;
2902 #ifdef CONFIG_MAC80211_MESH
2903         case NL80211_IFTYPE_MESH_POINT:
2904                 err = ieee80211_mesh_finish_csa(sdata);
2905                 if (err < 0)
2906                         return err;
2907                 *changed |= err;
2908                 break;
2909 #endif
2910         default:
2911                 WARN_ON(1);
2912                 return -EINVAL;
2913         }
2914
2915         return 0;
2916 }
2917
2918 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2919 {
2920         struct ieee80211_local *local = sdata->local;
2921         u32 changed = 0;
2922         int err;
2923
2924         sdata_assert_lock(sdata);
2925         lockdep_assert_held(&local->mtx);
2926         lockdep_assert_held(&local->chanctx_mtx);
2927
2928         /*
2929          * using reservation isn't immediate as it may be deferred until later
2930          * with multi-vif. once reservation is complete it will re-schedule the
2931          * work with no reserved_chanctx so verify chandef to check if it
2932          * completed successfully
2933          */
2934
2935         if (sdata->reserved_chanctx) {
2936                 /*
2937                  * with multi-vif csa driver may call ieee80211_csa_finish()
2938                  * many times while waiting for other interfaces to use their
2939                  * reservations
2940                  */
2941                 if (sdata->reserved_ready)
2942                         return 0;
2943
2944                 return ieee80211_vif_use_reserved_context(sdata);
2945         }
2946
2947         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2948                                         &sdata->csa_chandef))
2949                 return -EINVAL;
2950
2951         sdata->vif.csa_active = false;
2952
2953         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2954         if (err)
2955                 return err;
2956
2957         ieee80211_bss_info_change_notify(sdata, changed);
2958
2959         if (sdata->csa_block_tx) {
2960                 ieee80211_wake_vif_queues(local, sdata,
2961                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2962                 sdata->csa_block_tx = false;
2963         }
2964
2965         err = drv_post_channel_switch(sdata);
2966         if (err)
2967                 return err;
2968
2969         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2970
2971         return 0;
2972 }
2973
2974 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2975 {
2976         if (__ieee80211_csa_finalize(sdata)) {
2977                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2978                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2979                                     GFP_KERNEL);
2980         }
2981 }
2982
2983 void ieee80211_csa_finalize_work(struct work_struct *work)
2984 {
2985         struct ieee80211_sub_if_data *sdata =
2986                 container_of(work, struct ieee80211_sub_if_data,
2987                              csa_finalize_work);
2988         struct ieee80211_local *local = sdata->local;
2989
2990         sdata_lock(sdata);
2991         mutex_lock(&local->mtx);
2992         mutex_lock(&local->chanctx_mtx);
2993
2994         /* AP might have been stopped while waiting for the lock. */
2995         if (!sdata->vif.csa_active)
2996                 goto unlock;
2997
2998         if (!ieee80211_sdata_running(sdata))
2999                 goto unlock;
3000
3001         ieee80211_csa_finalize(sdata);
3002
3003 unlock:
3004         mutex_unlock(&local->chanctx_mtx);
3005         mutex_unlock(&local->mtx);
3006         sdata_unlock(sdata);
3007 }
3008
3009 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3010                                     struct cfg80211_csa_settings *params,
3011                                     u32 *changed)
3012 {
3013         struct ieee80211_csa_settings csa = {};
3014         int err;
3015
3016         switch (sdata->vif.type) {
3017         case NL80211_IFTYPE_AP:
3018                 sdata->u.ap.next_beacon =
3019                         cfg80211_beacon_dup(&params->beacon_after);
3020                 if (!sdata->u.ap.next_beacon)
3021                         return -ENOMEM;
3022
3023                 /*
3024                  * With a count of 0, we don't have to wait for any
3025                  * TBTT before switching, so complete the CSA
3026                  * immediately.  In theory, with a count == 1 we
3027                  * should delay the switch until just before the next
3028                  * TBTT, but that would complicate things so we switch
3029                  * immediately too.  If we would delay the switch
3030                  * until the next TBTT, we would have to set the probe
3031                  * response here.
3032                  *
3033                  * TODO: A channel switch with count <= 1 without
3034                  * sending a CSA action frame is kind of useless,
3035                  * because the clients won't know we're changing
3036                  * channels.  The action frame must be implemented
3037                  * either here or in the userspace.
3038                  */
3039                 if (params->count <= 1)
3040                         break;
3041
3042                 if ((params->n_counter_offsets_beacon >
3043                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3044                     (params->n_counter_offsets_presp >
3045                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3046                         return -EINVAL;
3047
3048                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3049                 csa.counter_offsets_presp = params->counter_offsets_presp;
3050                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3051                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3052                 csa.count = params->count;
3053
3054                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3055                 if (err < 0) {
3056                         kfree(sdata->u.ap.next_beacon);
3057                         return err;
3058                 }
3059                 *changed |= err;
3060
3061                 break;
3062         case NL80211_IFTYPE_ADHOC:
3063                 if (!sdata->vif.bss_conf.ibss_joined)
3064                         return -EINVAL;
3065
3066                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3067                         return -EINVAL;
3068
3069                 switch (params->chandef.width) {
3070                 case NL80211_CHAN_WIDTH_40:
3071                         if (cfg80211_get_chandef_type(&params->chandef) !=
3072                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3073                                 return -EINVAL;
3074                 case NL80211_CHAN_WIDTH_5:
3075                 case NL80211_CHAN_WIDTH_10:
3076                 case NL80211_CHAN_WIDTH_20_NOHT:
3077                 case NL80211_CHAN_WIDTH_20:
3078                         break;
3079                 default:
3080                         return -EINVAL;
3081                 }
3082
3083                 /* changes into another band are not supported */
3084                 if (sdata->u.ibss.chandef.chan->band !=
3085                     params->chandef.chan->band)
3086                         return -EINVAL;
3087
3088                 /* see comments in the NL80211_IFTYPE_AP block */
3089                 if (params->count > 1) {
3090                         err = ieee80211_ibss_csa_beacon(sdata, params);
3091                         if (err < 0)
3092                                 return err;
3093                         *changed |= err;
3094                 }
3095
3096                 ieee80211_send_action_csa(sdata, params);
3097
3098                 break;
3099 #ifdef CONFIG_MAC80211_MESH
3100         case NL80211_IFTYPE_MESH_POINT: {
3101                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3102
3103                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3104                         return -EINVAL;
3105
3106                 /* changes into another band are not supported */
3107                 if (sdata->vif.bss_conf.chandef.chan->band !=
3108                     params->chandef.chan->band)
3109                         return -EINVAL;
3110
3111                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3112                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3113                         if (!ifmsh->pre_value)
3114                                 ifmsh->pre_value = 1;
3115                         else
3116                                 ifmsh->pre_value++;
3117                 }
3118
3119                 /* see comments in the NL80211_IFTYPE_AP block */
3120                 if (params->count > 1) {
3121                         err = ieee80211_mesh_csa_beacon(sdata, params);
3122                         if (err < 0) {
3123                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3124                                 return err;
3125                         }
3126                         *changed |= err;
3127                 }
3128
3129                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3130                         ieee80211_send_action_csa(sdata, params);
3131
3132                 break;
3133                 }
3134 #endif
3135         default:
3136                 return -EOPNOTSUPP;
3137         }
3138
3139         return 0;
3140 }
3141
3142 static int
3143 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3144                            struct cfg80211_csa_settings *params)
3145 {
3146         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3147         struct ieee80211_local *local = sdata->local;
3148         struct ieee80211_channel_switch ch_switch;
3149         struct ieee80211_chanctx_conf *conf;
3150         struct ieee80211_chanctx *chanctx;
3151         u32 changed = 0;
3152         int err;
3153
3154         sdata_assert_lock(sdata);
3155         lockdep_assert_held(&local->mtx);
3156
3157         if (!list_empty(&local->roc_list) || local->scanning)
3158                 return -EBUSY;
3159
3160         if (sdata->wdev.cac_started)
3161                 return -EBUSY;
3162
3163         if (cfg80211_chandef_identical(&params->chandef,
3164                                        &sdata->vif.bss_conf.chandef))
3165                 return -EINVAL;
3166
3167         /* don't allow another channel switch if one is already active. */
3168         if (sdata->vif.csa_active)
3169                 return -EBUSY;
3170
3171         mutex_lock(&local->chanctx_mtx);
3172         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3173                                          lockdep_is_held(&local->chanctx_mtx));
3174         if (!conf) {
3175                 err = -EBUSY;
3176                 goto out;
3177         }
3178
3179         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3180
3181         ch_switch.timestamp = 0;
3182         ch_switch.device_timestamp = 0;
3183         ch_switch.block_tx = params->block_tx;
3184         ch_switch.chandef = params->chandef;
3185         ch_switch.count = params->count;
3186
3187         err = drv_pre_channel_switch(sdata, &ch_switch);
3188         if (err)
3189                 goto out;
3190
3191         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3192                                             chanctx->mode,
3193                                             params->radar_required);
3194         if (err)
3195                 goto out;
3196
3197         /* if reservation is invalid then this will fail */
3198         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3199         if (err) {
3200                 ieee80211_vif_unreserve_chanctx(sdata);
3201                 goto out;
3202         }
3203
3204         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3205         if (err) {
3206                 ieee80211_vif_unreserve_chanctx(sdata);
3207                 goto out;
3208         }
3209
3210         sdata->csa_chandef = params->chandef;
3211         sdata->csa_block_tx = params->block_tx;
3212         sdata->vif.csa_active = true;
3213
3214         if (sdata->csa_block_tx)
3215                 ieee80211_stop_vif_queues(local, sdata,
3216                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3217
3218         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3219                                           params->count);
3220
3221         if (changed) {
3222                 ieee80211_bss_info_change_notify(sdata, changed);
3223                 drv_channel_switch_beacon(sdata, &params->chandef);
3224         } else {
3225                 /* if the beacon didn't change, we can finalize immediately */
3226                 ieee80211_csa_finalize(sdata);
3227         }
3228
3229 out:
3230         mutex_unlock(&local->chanctx_mtx);
3231         return err;
3232 }
3233
3234 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3235                              struct cfg80211_csa_settings *params)
3236 {
3237         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3238         struct ieee80211_local *local = sdata->local;
3239         int err;
3240
3241         mutex_lock(&local->mtx);
3242         err = __ieee80211_channel_switch(wiphy, dev, params);
3243         mutex_unlock(&local->mtx);
3244
3245         return err;
3246 }
3247
3248 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3249 {
3250         lockdep_assert_held(&local->mtx);
3251
3252         local->roc_cookie_counter++;
3253
3254         /* wow, you wrapped 64 bits ... more likely a bug */
3255         if (WARN_ON(local->roc_cookie_counter == 0))
3256                 local->roc_cookie_counter++;
3257
3258         return local->roc_cookie_counter;
3259 }
3260
3261 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3262                              u64 *cookie, gfp_t gfp)
3263 {
3264         unsigned long spin_flags;
3265         struct sk_buff *ack_skb;
3266         int id;
3267
3268         ack_skb = skb_copy(skb, gfp);
3269         if (!ack_skb)
3270                 return -ENOMEM;
3271
3272         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3273         id = idr_alloc(&local->ack_status_frames, ack_skb,
3274                        1, 0x10000, GFP_ATOMIC);
3275         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3276
3277         if (id < 0) {
3278                 kfree_skb(ack_skb);
3279                 return -ENOMEM;
3280         }
3281
3282         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3283
3284         *cookie = ieee80211_mgmt_tx_cookie(local);
3285         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3286
3287         return 0;
3288 }
3289
3290 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3291                                           struct wireless_dev *wdev,
3292                                           u16 frame_type, bool reg)
3293 {
3294         struct ieee80211_local *local = wiphy_priv(wiphy);
3295         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3296
3297         switch (frame_type) {
3298         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3299                 if (reg) {
3300                         local->probe_req_reg++;
3301                         sdata->vif.probe_req_reg++;
3302                 } else {
3303                         if (local->probe_req_reg)
3304                                 local->probe_req_reg--;
3305
3306                         if (sdata->vif.probe_req_reg)
3307                                 sdata->vif.probe_req_reg--;
3308                 }
3309
3310                 if (!local->open_count)
3311                         break;
3312
3313                 if (sdata->vif.probe_req_reg == 1)
3314                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3315                                                 FIF_PROBE_REQ);
3316                 else if (sdata->vif.probe_req_reg == 0)
3317                         drv_config_iface_filter(local, sdata, 0,
3318                                                 FIF_PROBE_REQ);
3319
3320                 ieee80211_configure_filter(local);
3321                 break;
3322         default:
3323                 break;
3324         }
3325 }
3326
3327 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3328 {
3329         struct ieee80211_local *local = wiphy_priv(wiphy);
3330
3331         if (local->started)
3332                 return -EOPNOTSUPP;
3333
3334         return drv_set_antenna(local, tx_ant, rx_ant);
3335 }
3336
3337 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3338 {
3339         struct ieee80211_local *local = wiphy_priv(wiphy);
3340
3341         return drv_get_antenna(local, tx_ant, rx_ant);
3342 }
3343
3344 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3345                                     struct net_device *dev,
3346                                     struct cfg80211_gtk_rekey_data *data)
3347 {
3348         struct ieee80211_local *local = wiphy_priv(wiphy);
3349         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3350
3351         if (!local->ops->set_rekey_data)
3352                 return -EOPNOTSUPP;
3353
3354         drv_set_rekey_data(local, sdata, data);
3355
3356         return 0;
3357 }
3358
3359 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3360                                   const u8 *peer, u64 *cookie)
3361 {
3362         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3363         struct ieee80211_local *local = sdata->local;
3364         struct ieee80211_qos_hdr *nullfunc;
3365         struct sk_buff *skb;
3366         int size = sizeof(*nullfunc);
3367         __le16 fc;
3368         bool qos;
3369         struct ieee80211_tx_info *info;
3370         struct sta_info *sta;
3371         struct ieee80211_chanctx_conf *chanctx_conf;
3372         enum nl80211_band band;
3373         int ret;
3374
3375         /* the lock is needed to assign the cookie later */
3376         mutex_lock(&local->mtx);
3377
3378         rcu_read_lock();
3379         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3380         if (WARN_ON(!chanctx_conf)) {
3381                 ret = -EINVAL;
3382                 goto unlock;
3383         }
3384         band = chanctx_conf->def.chan->band;
3385         sta = sta_info_get_bss(sdata, peer);
3386         if (sta) {
3387                 qos = sta->sta.wme;
3388         } else {
3389                 ret = -ENOLINK;
3390                 goto unlock;
3391         }
3392
3393         if (qos) {
3394                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3395                                  IEEE80211_STYPE_QOS_NULLFUNC |
3396                                  IEEE80211_FCTL_FROMDS);
3397         } else {
3398                 size -= 2;
3399                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3400                                  IEEE80211_STYPE_NULLFUNC |
3401                                  IEEE80211_FCTL_FROMDS);
3402         }
3403
3404         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3405         if (!skb) {
3406                 ret = -ENOMEM;
3407                 goto unlock;
3408         }
3409
3410         skb->dev = dev;
3411
3412         skb_reserve(skb, local->hw.extra_tx_headroom);
3413
3414         nullfunc = (void *) skb_put(skb, size);
3415         nullfunc->frame_control = fc;
3416         nullfunc->duration_id = 0;
3417         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3418         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3419         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3420         nullfunc->seq_ctrl = 0;
3421
3422         info = IEEE80211_SKB_CB(skb);
3423
3424         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3425                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3426         info->band = band;
3427
3428         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3429         skb->priority = 7;
3430         if (qos)
3431                 nullfunc->qos_ctrl = cpu_to_le16(7);
3432
3433         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3434         if (ret) {
3435                 kfree_skb(skb);
3436                 goto unlock;
3437         }
3438
3439         local_bh_disable();
3440         ieee80211_xmit(sdata, sta, skb);
3441         local_bh_enable();
3442
3443         ret = 0;
3444 unlock:
3445         rcu_read_unlock();
3446         mutex_unlock(&local->mtx);
3447
3448         return ret;
3449 }
3450
3451 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3452                                      struct wireless_dev *wdev,
3453                                      struct cfg80211_chan_def *chandef)
3454 {
3455         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3456         struct ieee80211_local *local = wiphy_priv(wiphy);
3457         struct ieee80211_chanctx_conf *chanctx_conf;
3458         int ret = -ENODATA;
3459
3460         rcu_read_lock();
3461         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3462         if (chanctx_conf) {
3463                 *chandef = sdata->vif.bss_conf.chandef;
3464                 ret = 0;
3465         } else if (local->open_count > 0 &&
3466                    local->open_count == local->monitors &&
3467                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3468                 if (local->use_chanctx)
3469                         *chandef = local->monitor_chandef;
3470                 else
3471                         *chandef = local->_oper_chandef;
3472                 ret = 0;
3473         }
3474         rcu_read_unlock();
3475
3476         return ret;
3477 }
3478
3479 #ifdef CONFIG_PM
3480 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3481 {
3482         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3483 }
3484 #endif
3485
3486 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3487                                  struct net_device *dev,
3488                                  struct cfg80211_qos_map *qos_map)
3489 {
3490         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3491         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3492
3493         if (qos_map) {
3494                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3495                 if (!new_qos_map)
3496                         return -ENOMEM;
3497                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3498         } else {
3499                 /* A NULL qos_map was passed to disable QoS mapping */
3500                 new_qos_map = NULL;
3501         }
3502
3503         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3504         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3505         if (old_qos_map)
3506                 kfree_rcu(old_qos_map, rcu_head);
3507
3508         return 0;
3509 }
3510
3511 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3512                                       struct net_device *dev,
3513                                       struct cfg80211_chan_def *chandef)
3514 {
3515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3516         int ret;
3517         u32 changed = 0;
3518
3519         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3520         if (ret == 0)
3521                 ieee80211_bss_info_change_notify(sdata, changed);
3522
3523         return ret;
3524 }
3525
3526 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3527                                u8 tsid, const u8 *peer, u8 up,
3528                                u16 admitted_time)
3529 {
3530         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3531         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3532         int ac = ieee802_1d_to_ac[up];
3533
3534         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3535                 return -EOPNOTSUPP;
3536
3537         if (!(sdata->wmm_acm & BIT(up)))
3538                 return -EINVAL;
3539
3540         if (ifmgd->tx_tspec[ac].admitted_time)
3541                 return -EBUSY;
3542
3543         if (admitted_time) {
3544                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3545                 ifmgd->tx_tspec[ac].tsid = tsid;
3546                 ifmgd->tx_tspec[ac].up = up;
3547         }
3548
3549         return 0;
3550 }
3551
3552 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3553                                u8 tsid, const u8 *peer)
3554 {
3555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3556         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3557         struct ieee80211_local *local = wiphy_priv(wiphy);
3558         int ac;
3559
3560         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3561                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3562
3563                 /* skip unused entries */
3564                 if (!tx_tspec->admitted_time)
3565                         continue;
3566
3567                 if (tx_tspec->tsid != tsid)
3568                         continue;
3569
3570                 /* due to this new packets will be reassigned to non-ACM ACs */
3571                 tx_tspec->up = -1;
3572
3573                 /* Make sure that all packets have been sent to avoid to
3574                  * restore the QoS params on packets that are still on the
3575                  * queues.
3576                  */
3577                 synchronize_net();
3578                 ieee80211_flush_queues(local, sdata, false);
3579
3580                 /* restore the normal QoS parameters
3581                  * (unconditionally to avoid races)
3582                  */
3583                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3584                 tx_tspec->downgraded = false;
3585                 ieee80211_sta_handle_tspec_ac_params(sdata);
3586
3587                 /* finally clear all the data */
3588                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3589
3590                 return 0;
3591         }
3592
3593         return -ENOENT;
3594 }
3595
3596 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3597                                    u8 inst_id,
3598                                    enum nl80211_nan_func_term_reason reason,
3599                                    gfp_t gfp)
3600 {
3601         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3602         struct cfg80211_nan_func *func;
3603         u64 cookie;
3604
3605         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3606                 return;
3607
3608         spin_lock_bh(&sdata->u.nan.func_lock);
3609
3610         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3611         if (WARN_ON(!func)) {
3612                 spin_unlock_bh(&sdata->u.nan.func_lock);
3613                 return;
3614         }
3615
3616         cookie = func->cookie;
3617         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3618
3619         spin_unlock_bh(&sdata->u.nan.func_lock);
3620
3621         cfg80211_free_nan_func(func);
3622
3623         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3624                                      reason, cookie, gfp);
3625 }
3626 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3627
3628 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3629                               struct cfg80211_nan_match_params *match,
3630                               gfp_t gfp)
3631 {
3632         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3633         struct cfg80211_nan_func *func;
3634
3635         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3636                 return;
3637
3638         spin_lock_bh(&sdata->u.nan.func_lock);
3639
3640         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3641         if (WARN_ON(!func)) {
3642                 spin_unlock_bh(&sdata->u.nan.func_lock);
3643                 return;
3644         }
3645         match->cookie = func->cookie;
3646
3647         spin_unlock_bh(&sdata->u.nan.func_lock);
3648
3649         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3650 }
3651 EXPORT_SYMBOL(ieee80211_nan_func_match);
3652
3653 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3654                                               struct net_device *dev,
3655                                               const bool enabled)
3656 {
3657         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3658
3659         sdata->u.ap.multicast_to_unicast = enabled;
3660
3661         return 0;
3662 }
3663
3664 const struct cfg80211_ops mac80211_config_ops = {
3665         .add_virtual_intf = ieee80211_add_iface,
3666         .del_virtual_intf = ieee80211_del_iface,
3667         .change_virtual_intf = ieee80211_change_iface,
3668         .start_p2p_device = ieee80211_start_p2p_device,
3669         .stop_p2p_device = ieee80211_stop_p2p_device,
3670         .add_key = ieee80211_add_key,
3671         .del_key = ieee80211_del_key,
3672         .get_key = ieee80211_get_key,
3673         .set_default_key = ieee80211_config_default_key,
3674         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3675         .start_ap = ieee80211_start_ap,
3676         .change_beacon = ieee80211_change_beacon,
3677         .stop_ap = ieee80211_stop_ap,
3678         .add_station = ieee80211_add_station,
3679         .del_station = ieee80211_del_station,
3680         .change_station = ieee80211_change_station,
3681         .get_station = ieee80211_get_station,
3682         .dump_station = ieee80211_dump_station,
3683         .dump_survey = ieee80211_dump_survey,
3684 #ifdef CONFIG_MAC80211_MESH
3685         .add_mpath = ieee80211_add_mpath,
3686         .del_mpath = ieee80211_del_mpath,
3687         .change_mpath = ieee80211_change_mpath,
3688         .get_mpath = ieee80211_get_mpath,
3689         .dump_mpath = ieee80211_dump_mpath,
3690         .get_mpp = ieee80211_get_mpp,
3691         .dump_mpp = ieee80211_dump_mpp,
3692         .update_mesh_config = ieee80211_update_mesh_config,
3693         .get_mesh_config = ieee80211_get_mesh_config,
3694         .join_mesh = ieee80211_join_mesh,
3695         .leave_mesh = ieee80211_leave_mesh,
3696 #endif
3697         .join_ocb = ieee80211_join_ocb,
3698         .leave_ocb = ieee80211_leave_ocb,
3699         .change_bss = ieee80211_change_bss,
3700         .set_txq_params = ieee80211_set_txq_params,
3701         .set_monitor_channel = ieee80211_set_monitor_channel,
3702         .suspend = ieee80211_suspend,
3703         .resume = ieee80211_resume,
3704         .scan = ieee80211_scan,
3705         .abort_scan = ieee80211_abort_scan,
3706         .sched_scan_start = ieee80211_sched_scan_start,
3707         .sched_scan_stop = ieee80211_sched_scan_stop,
3708         .auth = ieee80211_auth,
3709         .assoc = ieee80211_assoc,
3710         .deauth = ieee80211_deauth,
3711         .disassoc = ieee80211_disassoc,
3712         .join_ibss = ieee80211_join_ibss,
3713         .leave_ibss = ieee80211_leave_ibss,
3714         .set_mcast_rate = ieee80211_set_mcast_rate,
3715         .set_wiphy_params = ieee80211_set_wiphy_params,
3716         .set_tx_power = ieee80211_set_tx_power,
3717         .get_tx_power = ieee80211_get_tx_power,
3718         .set_wds_peer = ieee80211_set_wds_peer,
3719         .rfkill_poll = ieee80211_rfkill_poll,
3720         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3721         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3722         .set_power_mgmt = ieee80211_set_power_mgmt,
3723         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3724         .remain_on_channel = ieee80211_remain_on_channel,
3725         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3726         .mgmt_tx = ieee80211_mgmt_tx,
3727         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3728         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3729         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3730         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3731         .set_antenna = ieee80211_set_antenna,
3732         .get_antenna = ieee80211_get_antenna,
3733         .set_rekey_data = ieee80211_set_rekey_data,
3734         .tdls_oper = ieee80211_tdls_oper,
3735         .tdls_mgmt = ieee80211_tdls_mgmt,
3736         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3737         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3738         .probe_client = ieee80211_probe_client,
3739         .set_noack_map = ieee80211_set_noack_map,
3740 #ifdef CONFIG_PM
3741         .set_wakeup = ieee80211_set_wakeup,
3742 #endif
3743         .get_channel = ieee80211_cfg_get_channel,
3744         .start_radar_detection = ieee80211_start_radar_detection,
3745         .channel_switch = ieee80211_channel_switch,
3746         .set_qos_map = ieee80211_set_qos_map,
3747         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3748         .add_tx_ts = ieee80211_add_tx_ts,
3749         .del_tx_ts = ieee80211_del_tx_ts,
3750         .start_nan = ieee80211_start_nan,
3751         .stop_nan = ieee80211_stop_nan,
3752         .nan_change_conf = ieee80211_nan_change_conf,
3753         .add_nan_func = ieee80211_add_nan_func,
3754         .del_nan_func = ieee80211_del_nan_func,
3755         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3756 };