net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  *
   8  * This file is GPLv2 as found in COPYING.
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/if_ether.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "driver-ops.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  26                                          struct vif_params *params)
  27 {
  28         bool mu_mimo_groups = false;
  29         bool mu_mimo_follow = false;
  30
  31         if (params->vht_mumimo_groups) {
  32                 u64 membership;
  33
  34                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  35
  36                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  37                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  38                 memcpy(sdata->vif.bss_conf.mu_group.position,
  39                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  40                        WLAN_USER_POSITION_LEN);
  41                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  42                 /* don't care about endianness - just check for 0 */
  43                 memcpy(&membership, params->vht_mumimo_groups,
  44                        WLAN_MEMBERSHIP_LEN);
  45                 mu_mimo_groups = membership != 0;
  46         }
  47
  48         if (params->vht_mumimo_follow_addr) {
  49                 mu_mimo_follow =
  50                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  51                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  52                                 params->vht_mumimo_follow_addr);
  53         }
  54
  55         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  56 }
  57
  58 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  59                                      struct vif_params *params)
  60 {
  61         struct ieee80211_local *local = sdata->local;
  62         struct ieee80211_sub_if_data *monitor_sdata;
  63
  64         /* check flags first */
  65         if (params->flags && ieee80211_sdata_running(sdata)) {
  66                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  67
  68                 /*
  69                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  70                  * MONITOR_FLAG_ACTIVE to be changed while the
  71                  * interface is up.
  72                  * Else we would need to add a lot of cruft
  73                  * to update everything:
  74                  *      cooked_mntrs, monitor and all fif_* counters
  75                  *      reconfigure hardware
  76                  */
  77                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  78                         return -EBUSY;
  79         }
  80
  81         /* also validate MU-MIMO change */
  82         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83
  84         if (!monitor_sdata &&
  85             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  86                 return -EOPNOTSUPP;
  87
  88         /* apply all changes now - no failures allowed */
  89
  90         if (monitor_sdata)
  91                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  92
  93         if (params->flags) {
  94                 if (ieee80211_sdata_running(sdata)) {
  95                         ieee80211_adjust_monitor_flags(sdata, -1);
  96                         sdata->u.mntr.flags = params->flags;
  97                         ieee80211_adjust_monitor_flags(sdata, 1);
  98
  99                         ieee80211_configure_filter(local);
 100                 } else {
 101                         /*
 102                          * Because the interface is down, ieee80211_do_stop
 103                          * and ieee80211_do_open take care of "everything"
 104                          * mentioned in the comment above.
 105                          */
 106                         sdata->u.mntr.flags = params->flags;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 114                                                 const char *name,
 115                                                 unsigned char name_assign_type,
 116                                                 enum nl80211_iftype type,
 117                                                 struct vif_params *params)
 118 {
 119         struct ieee80211_local *local = wiphy_priv(wiphy);
 120         struct wireless_dev *wdev;
 121         struct ieee80211_sub_if_data *sdata;
 122         int err;
 123
 124         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 125         if (err)
 126                 return ERR_PTR(err);
 127
 128         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 129
 130         if (type == NL80211_IFTYPE_MONITOR) {
 131                 err = ieee80211_set_mon_options(sdata, params);
 132                 if (err) {
 133                         ieee80211_if_remove(sdata);
 134                         return NULL;
 135                 }
 136         }
 137
 138         return wdev;
 139 }
 140
 141 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 142 {
 143         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 144
 145         return 0;
 146 }
 147
 148 static int ieee80211_change_iface(struct wiphy *wiphy,
 149                                   struct net_device *dev,
 150                                   enum nl80211_iftype type,
 151                                   struct vif_params *params)
 152 {
 153         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 154         int ret;
 155
 156         ret = ieee80211_if_change_type(sdata, type);
 157         if (ret)
 158                 return ret;
 159
 160         if (type == NL80211_IFTYPE_AP_VLAN &&
 161             params && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION &&
 165                    params && params->use_4addr >= 0) {
 166                 sdata->u.mgd.use_4addr = params->use_4addr;
 167         }
 168
 169         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 170                 ret = ieee80211_set_mon_options(sdata, params);
 171                 if (ret)
 172                         return ret;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 179                                       struct wireless_dev *wdev)
 180 {
 181         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 182         int ret;
 183
 184         mutex_lock(&sdata->local->chanctx_mtx);
 185         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 186         mutex_unlock(&sdata->local->chanctx_mtx);
 187         if (ret < 0)
 188                 return ret;
 189
 190         return ieee80211_do_open(wdev, true);
 191 }
 192
 193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 194                                       struct wireless_dev *wdev)
 195 {
 196         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 197 }
 198
 199 static int ieee80211_start_nan(struct wiphy *wiphy,
 200                                struct wireless_dev *wdev,
 201                                struct cfg80211_nan_conf *conf)
 202 {
 203         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 204         int ret;
 205
 206         mutex_lock(&sdata->local->chanctx_mtx);
 207         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 208         mutex_unlock(&sdata->local->chanctx_mtx);
 209         if (ret < 0)
 210                 return ret;
 211
 212         ret = ieee80211_do_open(wdev, true);
 213         if (ret)
 214                 return ret;
 215
 216         ret = drv_start_nan(sdata->local, sdata, conf);
 217         if (ret)
 218                 ieee80211_sdata_stop(sdata);
 219
 220         sdata->u.nan.conf = *conf;
 221
 222         return ret;
 223 }
 224
 225 static void ieee80211_stop_nan(struct wiphy *wiphy,
 226                                struct wireless_dev *wdev)
 227 {
 228         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 229
 230         drv_stop_nan(sdata->local, sdata);
 231         ieee80211_sdata_stop(sdata);
 232 }
 233
 234 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 235                                      struct wireless_dev *wdev,
 236                                      struct cfg80211_nan_conf *conf,
 237                                      u32 changes)
 238 {
 239         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 240         struct cfg80211_nan_conf new_conf;
 241         int ret = 0;
 242
 243         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 244                 return -EOPNOTSUPP;
 245
 246         if (!ieee80211_sdata_running(sdata))
 247                 return -ENETDOWN;
 248
 249         new_conf = sdata->u.nan.conf;
 250
 251         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 252                 new_conf.master_pref = conf->master_pref;
 253
 254         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 255                 new_conf.bands = conf->bands;
 256
 257         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 258         if (!ret)
 259                 sdata->u.nan.conf = new_conf;
 260
 261         return ret;
 262 }
 263
 264 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 265                                   struct wireless_dev *wdev,
 266                                   struct cfg80211_nan_func *nan_func)
 267 {
 268         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 269         int ret;
 270
 271         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 272                 return -EOPNOTSUPP;
 273
 274         if (!ieee80211_sdata_running(sdata))
 275                 return -ENETDOWN;
 276
 277         spin_lock_bh(&sdata->u.nan.func_lock);
 278
 279         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 280                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 281                         GFP_ATOMIC);
 282         spin_unlock_bh(&sdata->u.nan.func_lock);
 283
 284         if (ret < 0)
 285                 return ret;
 286
 287         nan_func->instance_id = ret;
 288
 289         WARN_ON(nan_func->instance_id == 0);
 290
 291         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 292         if (ret) {
 293                 spin_lock_bh(&sdata->u.nan.func_lock);
 294                 idr_remove(&sdata->u.nan.function_inst_ids,
 295                            nan_func->instance_id);
 296                 spin_unlock_bh(&sdata->u.nan.func_lock);
 297         }
 298
 299         return ret;
 300 }
 301
 302 static struct cfg80211_nan_func *
 303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 304                                   u64 cookie)
 305 {
 306         struct cfg80211_nan_func *func;
 307         int id;
 308
 309         lockdep_assert_held(&sdata->u.nan.func_lock);
 310
 311         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 312                 if (func->cookie == cookie)
 313                         return func;
 314         }
 315
 316         return NULL;
 317 }
 318
 319 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 320                                   struct wireless_dev *wdev, u64 cookie)
 321 {
 322         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 323         struct cfg80211_nan_func *func;
 324         u8 instance_id = 0;
 325
 326         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 327             !ieee80211_sdata_running(sdata))
 328                 return;
 329
 330         spin_lock_bh(&sdata->u.nan.func_lock);
 331
 332         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 333         if (func)
 334                 instance_id = func->instance_id;
 335
 336         spin_unlock_bh(&sdata->u.nan.func_lock);
 337
 338         if (instance_id)
 339                 drv_del_nan_func(sdata->local, sdata, instance_id);
 340 }
 341
 342 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 343                                   struct net_device *dev,
 344                                   u16 noack_map)
 345 {
 346         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 347
 348         sdata->noack_map = noack_map;
 349
 350         ieee80211_check_fast_xmit_iface(sdata);
 351
 352         return 0;
 353 }
 354
 355 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 356                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 357                              struct key_params *params)
 358 {
 359         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 360         struct ieee80211_local *local = sdata->local;
 361         struct sta_info *sta = NULL;
 362         const struct ieee80211_cipher_scheme *cs = NULL;
 363         struct ieee80211_key *key;
 364         int err;
 365
 366         if (!ieee80211_sdata_running(sdata))
 367                 return -ENETDOWN;
 368
 369         /* reject WEP and TKIP keys if WEP failed to initialize */
 370         switch (params->cipher) {
 371         case WLAN_CIPHER_SUITE_WEP40:
 372         case WLAN_CIPHER_SUITE_TKIP:
 373         case WLAN_CIPHER_SUITE_WEP104:
 374                 if (IS_ERR(local->wep_tx_tfm))
 375                         return -EINVAL;
 376                 break;
 377         case WLAN_CIPHER_SUITE_CCMP:
 378         case WLAN_CIPHER_SUITE_CCMP_256:
 379         case WLAN_CIPHER_SUITE_AES_CMAC:
 380         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 383         case WLAN_CIPHER_SUITE_GCMP:
 384         case WLAN_CIPHER_SUITE_GCMP_256:
 385                 break;
 386         default:
 387                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 388                 break;
 389         }
 390
 391         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 392                                   params->key, params->seq_len, params->seq,
 393                                   cs);
 394         if (IS_ERR(key))
 395                 return PTR_ERR(key);
 396
 397         if (pairwise)
 398                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 399
 400         mutex_lock(&local->sta_mtx);
 401
 402         if (mac_addr) {
 403                 sta = sta_info_get_bss(sdata, mac_addr);
 404                 /*
 405                  * The ASSOC test makes sure the driver is ready to
 406                  * receive the key. When wpa_supplicant has roamed
 407                  * using FT, it attempts to set the key before
 408                  * association has completed, this rejects that attempt
 409                  * so it will set the key again after association.
 410                  *
 411                  * TODO: accept the key if we have a station entry and
 412                  *       add it to the device after the station.
 413                  */
 414                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 415                         ieee80211_key_free_unused(key);
 416                         err = -ENOENT;
 417                         goto out_unlock;
 418                 }
 419         }
 420
 421         switch (sdata->vif.type) {
 422         case NL80211_IFTYPE_STATION:
 423                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 424                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 425                 break;
 426         case NL80211_IFTYPE_AP:
 427         case NL80211_IFTYPE_AP_VLAN:
 428                 /* Keys without a station are used for TX only */
 429                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 430                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 431                 break;
 432         case NL80211_IFTYPE_ADHOC:
 433                 /* no MFP (yet) */
 434                 break;
 435         case NL80211_IFTYPE_MESH_POINT:
 436 #ifdef CONFIG_MAC80211_MESH
 437                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 438                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 439                 break;
 440 #endif
 441         case NL80211_IFTYPE_WDS:
 442         case NL80211_IFTYPE_MONITOR:
 443         case NL80211_IFTYPE_P2P_DEVICE:
 444         case NL80211_IFTYPE_NAN:
 445         case NL80211_IFTYPE_UNSPECIFIED:
 446         case NUM_NL80211_IFTYPES:
 447         case NL80211_IFTYPE_P2P_CLIENT:
 448         case NL80211_IFTYPE_P2P_GO:
 449         case NL80211_IFTYPE_OCB:
 450                 /* shouldn't happen */
 451                 WARN_ON_ONCE(1);
 452                 break;
 453         }
 454
 455         if (sta)
 456                 sta->cipher_scheme = cs;
 457
 458         err = ieee80211_key_link(key, sdata, sta);
 459
 460  out_unlock:
 461         mutex_unlock(&local->sta_mtx);
 462
 463         return err;
 464 }
 465
 466 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 467                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 468 {
 469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470         struct ieee80211_local *local = sdata->local;
 471         struct sta_info *sta;
 472         struct ieee80211_key *key = NULL;
 473         int ret;
 474
 475         mutex_lock(&local->sta_mtx);
 476         mutex_lock(&local->key_mtx);
 477
 478         if (mac_addr) {
 479                 ret = -ENOENT;
 480
 481                 sta = sta_info_get_bss(sdata, mac_addr);
 482                 if (!sta)
 483                         goto out_unlock;
 484
 485                 if (pairwise)
 486                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 487                 else
 488                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 489         } else
 490                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 491
 492         if (!key) {
 493                 ret = -ENOENT;
 494                 goto out_unlock;
 495         }
 496
 497         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 498
 499         ret = 0;
 500  out_unlock:
 501         mutex_unlock(&local->key_mtx);
 502         mutex_unlock(&local->sta_mtx);
 503
 504         return ret;
 505 }
 506
 507 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 508                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 509                              void *cookie,
 510                              void (*callback)(void *cookie,
 511                                               struct key_params *params))
 512 {
 513         struct ieee80211_sub_if_data *sdata;
 514         struct sta_info *sta = NULL;
 515         u8 seq[6] = {0};
 516         struct key_params params;
 517         struct ieee80211_key *key = NULL;
 518         u64 pn64;
 519         u32 iv32;
 520         u16 iv16;
 521         int err = -ENOENT;
 522         struct ieee80211_key_seq kseq = {};
 523
 524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 525
 526         rcu_read_lock();
 527
 528         if (mac_addr) {
 529                 sta = sta_info_get_bss(sdata, mac_addr);
 530                 if (!sta)
 531                         goto out;
 532
 533                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 534                         key = rcu_dereference(sta->ptk[key_idx]);
 535                 else if (!pairwise &&
 536                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 537                         key = rcu_dereference(sta->gtk[key_idx]);
 538         } else
 539                 key = rcu_dereference(sdata->keys[key_idx]);
 540
 541         if (!key)
 542                 goto out;
 543
 544         memset(&params, 0, sizeof(params));
 545
 546         params.cipher = key->conf.cipher;
 547
 548         switch (key->conf.cipher) {
 549         case WLAN_CIPHER_SUITE_TKIP:
 550                 pn64 = atomic64_read(&key->conf.tx_pn);
 551                 iv32 = TKIP_PN_TO_IV32(pn64);
 552                 iv16 = TKIP_PN_TO_IV16(pn64);
 553
 554                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 555                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 556                         drv_get_key_seq(sdata->local, key, &kseq);
 557                         iv32 = kseq.tkip.iv32;
 558                         iv16 = kseq.tkip.iv16;
 559                 }
 560
 561                 seq[0] = iv16 & 0xff;
 562                 seq[1] = (iv16 >> 8) & 0xff;
 563                 seq[2] = iv32 & 0xff;
 564                 seq[3] = (iv32 >> 8) & 0xff;
 565                 seq[4] = (iv32 >> 16) & 0xff;
 566                 seq[5] = (iv32 >> 24) & 0xff;
 567                 params.seq = seq;
 568                 params.seq_len = 6;
 569                 break;
 570         case WLAN_CIPHER_SUITE_CCMP:
 571         case WLAN_CIPHER_SUITE_CCMP_256:
 572         case WLAN_CIPHER_SUITE_AES_CMAC:
 573         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 574                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 575                              offsetof(typeof(kseq), aes_cmac));
 576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 579                              offsetof(typeof(kseq), aes_gmac));
 580         case WLAN_CIPHER_SUITE_GCMP:
 581         case WLAN_CIPHER_SUITE_GCMP_256:
 582                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 583                              offsetof(typeof(kseq), gcmp));
 584
 585                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 586                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 587                         drv_get_key_seq(sdata->local, key, &kseq);
 588                         memcpy(seq, kseq.ccmp.pn, 6);
 589                 } else {
 590                         pn64 = atomic64_read(&key->conf.tx_pn);
 591                         seq[0] = pn64;
 592                         seq[1] = pn64 >> 8;
 593                         seq[2] = pn64 >> 16;
 594                         seq[3] = pn64 >> 24;
 595                         seq[4] = pn64 >> 32;
 596                         seq[5] = pn64 >> 40;
 597                 }
 598                 params.seq = seq;
 599                 params.seq_len = 6;
 600                 break;
 601         default:
 602                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 603                         break;
 604                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 605                         break;
 606                 drv_get_key_seq(sdata->local, key, &kseq);
 607                 params.seq = kseq.hw.seq;
 608                 params.seq_len = kseq.hw.seq_len;
 609                 break;
 610         }
 611
 612         params.key = key->conf.key;
 613         params.key_len = key->conf.keylen;
 614
 615         callback(cookie, &params);
 616         err = 0;
 617
 618  out:
 619         rcu_read_unlock();
 620         return err;
 621 }
 622
 623 static int ieee80211_config_default_key(struct wiphy *wiphy,
 624                                         struct net_device *dev,
 625                                         u8 key_idx, bool uni,
 626                                         bool multi)
 627 {
 628         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 629
 630         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 631
 632         return 0;
 633 }
 634
 635 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 636                                              struct net_device *dev,
 637                                              u8 key_idx)
 638 {
 639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 640
 641         ieee80211_set_default_mgmt_key(sdata, key_idx);
 642
 643         return 0;
 644 }
 645
 646 void sta_set_rate_info_tx(struct sta_info *sta,
 647                           const struct ieee80211_tx_rate *rate,
 648                           struct rate_info *rinfo)
 649 {
 650         rinfo->flags = 0;
 651         if (rate->flags & IEEE80211_TX_RC_MCS) {
 652                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 653                 rinfo->mcs = rate->idx;
 654         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 655                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 656                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 657                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 658         } else {
 659                 struct ieee80211_supported_band *sband;
 660                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 661                 u16 brate;
 662
 663                 sband = ieee80211_get_sband(sta->sdata);
 664                 WARN_ON_ONCE(sband && !sband->bitrates);
 665                 if (sband && sband->bitrates) {
 666                         brate = sband->bitrates[rate->idx].bitrate;
 667                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 668                 }
 669         }
 670         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 671                 rinfo->bw = RATE_INFO_BW_40;
 672         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 673                 rinfo->bw = RATE_INFO_BW_80;
 674         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 675                 rinfo->bw = RATE_INFO_BW_160;
 676         else
 677                 rinfo->bw = RATE_INFO_BW_20;
 678         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 679                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 680 }
 681
 682 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 683                                   int idx, u8 *mac, struct station_info *sinfo)
 684 {
 685         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 686         struct ieee80211_local *local = sdata->local;
 687         struct sta_info *sta;
 688         int ret = -ENOENT;
 689
 690         mutex_lock(&local->sta_mtx);
 691
 692         sta = sta_info_get_by_idx(sdata, idx);
 693         if (sta) {
 694                 ret = 0;
 695                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 696                 sta_set_sinfo(sta, sinfo);
 697         }
 698
 699         mutex_unlock(&local->sta_mtx);
 700
 701         return ret;
 702 }
 703
 704 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 705                                  int idx, struct survey_info *survey)
 706 {
 707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 708
 709         return drv_get_survey(local, idx, survey);
 710 }
 711
 712 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 713                                  const u8 *mac, struct station_info *sinfo)
 714 {
 715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 716         struct ieee80211_local *local = sdata->local;
 717         struct sta_info *sta;
 718         int ret = -ENOENT;
 719
 720         mutex_lock(&local->sta_mtx);
 721
 722         sta = sta_info_get_bss(sdata, mac);
 723         if (sta) {
 724                 ret = 0;
 725                 sta_set_sinfo(sta, sinfo);
 726         }
 727
 728         mutex_unlock(&local->sta_mtx);
 729
 730         return ret;
 731 }
 732
 733 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 734                                          struct cfg80211_chan_def *chandef)
 735 {
 736         struct ieee80211_local *local = wiphy_priv(wiphy);
 737         struct ieee80211_sub_if_data *sdata;
 738         int ret = 0;
 739
 740         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 741                 return 0;
 742
 743         mutex_lock(&local->mtx);
 744         if (local->use_chanctx) {
 745                 sdata = rtnl_dereference(local->monitor_sdata);
 746                 if (sdata) {
 747                         ieee80211_vif_release_channel(sdata);
 748                         ret = ieee80211_vif_use_channel(sdata, chandef,
 749                                         IEEE80211_CHANCTX_EXCLUSIVE);
 750                 }
 751         } else if (local->open_count == local->monitors) {
 752                 local->_oper_chandef = *chandef;
 753                 ieee80211_hw_config(local, 0);
 754         }
 755
 756         if (ret == 0)
 757                 local->monitor_chandef = *chandef;
 758         mutex_unlock(&local->mtx);
 759
 760         return ret;
 761 }
 762
 763 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 764                                     const u8 *resp, size_t resp_len,
 765                                     const struct ieee80211_csa_settings *csa)
 766 {
 767         struct probe_resp *new, *old;
 768
 769         if (!resp || !resp_len)
 770                 return 1;
 771
 772         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 773
 774         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 775         if (!new)
 776                 return -ENOMEM;
 777
 778         new->len = resp_len;
 779         memcpy(new->data, resp, resp_len);
 780
 781         if (csa)
 782                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 783                        csa->n_counter_offsets_presp *
 784                        sizeof(new->csa_counter_offsets[0]));
 785
 786         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 787         if (old)
 788                 kfree_rcu(old, rcu_head);
 789
 790         return 0;
 791 }
 792
 793 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 794                                    struct cfg80211_beacon_data *params,
 795                                    const struct ieee80211_csa_settings *csa)
 796 {
 797         struct beacon_data *new, *old;
 798         int new_head_len, new_tail_len;
 799         int size, err;
 800         u32 changed = BSS_CHANGED_BEACON;
 801
 802         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 803
 804
 805         /* Need to have a beacon head if we don't have one yet */
 806         if (!params->head && !old)
 807                 return -EINVAL;
 808
 809         /* new or old head? */
 810         if (params->head)
 811                 new_head_len = params->head_len;
 812         else
 813                 new_head_len = old->head_len;
 814
 815         /* new or old tail? */
 816         if (params->tail || !old)
 817                 /* params->tail_len will be zero for !params->tail */
 818                 new_tail_len = params->tail_len;
 819         else
 820                 new_tail_len = old->tail_len;
 821
 822         size = sizeof(*new) + new_head_len + new_tail_len;
 823
 824         new = kzalloc(size, GFP_KERNEL);
 825         if (!new)
 826                 return -ENOMEM;
 827
 828         /* start filling the new info now */
 829
 830         /*
 831          * pointers go into the block we allocated,
 832          * memory is | beacon_data | head | tail |
 833          */
 834         new->head = ((u8 *) new) + sizeof(*new);
 835         new->tail = new->head + new_head_len;
 836         new->head_len = new_head_len;
 837         new->tail_len = new_tail_len;
 838
 839         if (csa) {
 840                 new->csa_current_counter = csa->count;
 841                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 842                        csa->n_counter_offsets_beacon *
 843                        sizeof(new->csa_counter_offsets[0]));
 844         }
 845
 846         /* copy in head */
 847         if (params->head)
 848                 memcpy(new->head, params->head, new_head_len);
 849         else
 850                 memcpy(new->head, old->head, new_head_len);
 851
 852         /* copy in optional tail */
 853         if (params->tail)
 854                 memcpy(new->tail, params->tail, new_tail_len);
 855         else
 856                 if (old)
 857                         memcpy(new->tail, old->tail, new_tail_len);
 858
 859         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 860                                        params->probe_resp_len, csa);
 861         if (err < 0)
 862                 return err;
 863         if (err == 0)
 864                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 865
 866         rcu_assign_pointer(sdata->u.ap.beacon, new);
 867
 868         if (old)
 869                 kfree_rcu(old, rcu_head);
 870
 871         return changed;
 872 }
 873
 874 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 875                               struct cfg80211_ap_settings *params)
 876 {
 877         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 878         struct ieee80211_local *local = sdata->local;
 879         struct beacon_data *old;
 880         struct ieee80211_sub_if_data *vlan;
 881         u32 changed = BSS_CHANGED_BEACON_INT |
 882                       BSS_CHANGED_BEACON_ENABLED |
 883                       BSS_CHANGED_BEACON |
 884                       BSS_CHANGED_SSID |
 885                       BSS_CHANGED_P2P_PS |
 886                       BSS_CHANGED_TXPOWER;
 887         int err;
 888         int prev_beacon_int;
 889
 890         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 891         if (old)
 892                 return -EALREADY;
 893
 894         switch (params->smps_mode) {
 895         case NL80211_SMPS_OFF:
 896                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 897                 break;
 898         case NL80211_SMPS_STATIC:
 899                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 900                 break;
 901         case NL80211_SMPS_DYNAMIC:
 902                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 903                 break;
 904         default:
 905                 return -EINVAL;
 906         }
 907         sdata->u.ap.req_smps = sdata->smps_mode;
 908
 909         sdata->needed_rx_chains = sdata->local->rx_chains;
 910
 911         prev_beacon_int = sdata->vif.bss_conf.beacon_int;
 912         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 913
 914         mutex_lock(&local->mtx);
 915         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 916                                         IEEE80211_CHANCTX_SHARED);
 917         if (!err)
 918                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 919         mutex_unlock(&local->mtx);
 920         if (err) {
 921                 sdata->vif.bss_conf.beacon_int = prev_beacon_int;
 922                 return err;
 923         }
 924
 925         /*
 926          * Apply control port protocol, this allows us to
 927          * not encrypt dynamic WEP control frames.
 928          */
 929         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 930         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 931         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 932                                                         &params->crypto,
 933                                                         sdata->vif.type);
 934
 935         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 936                 vlan->control_port_protocol =
 937                         params->crypto.control_port_ethertype;
 938                 vlan->control_port_no_encrypt =
 939                         params->crypto.control_port_no_encrypt;
 940                 vlan->encrypt_headroom =
 941                         ieee80211_cs_headroom(sdata->local,
 942                                               &params->crypto,
 943                                               vlan->vif.type);
 944         }
 945
 946         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 947         sdata->vif.bss_conf.enable_beacon = true;
 948         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 949
 950         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 951         if (params->ssid_len)
 952                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 953                        params->ssid_len);
 954         sdata->vif.bss_conf.hidden_ssid =
 955                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 956
 957         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 958                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 959         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 960                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 961         if (params->p2p_opp_ps)
 962                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 963                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 964
 965         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 966         if (err < 0) {
 967                 ieee80211_vif_release_channel(sdata);
 968                 return err;
 969         }
 970         changed |= err;
 971
 972         err = drv_start_ap(sdata->local, sdata);
 973         if (err) {
 974                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 975
 976                 if (old)
 977                         kfree_rcu(old, rcu_head);
 978                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 979                 ieee80211_vif_release_channel(sdata);
 980                 return err;
 981         }
 982
 983         ieee80211_recalc_dtim(local, sdata);
 984         ieee80211_bss_info_change_notify(sdata, changed);
 985
 986         netif_carrier_on(dev);
 987         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 988                 netif_carrier_on(vlan->dev);
 989
 990         return 0;
 991 }
 992
 993 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 994                                    struct cfg80211_beacon_data *params)
 995 {
 996         struct ieee80211_sub_if_data *sdata;
 997         struct beacon_data *old;
 998         int err;
 999
1000         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001         sdata_assert_lock(sdata);
1002
1003         /* don't allow changing the beacon while CSA is in place - offset
1004          * of channel switch counter may change
1005          */
1006         if (sdata->vif.csa_active)
1007                 return -EBUSY;
1008
1009         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1010         if (!old)
1011                 return -ENOENT;
1012
1013         err = ieee80211_assign_beacon(sdata, params, NULL);
1014         if (err < 0)
1015                 return err;
1016         ieee80211_bss_info_change_notify(sdata, err);
1017         return 0;
1018 }
1019
1020 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1021 {
1022         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1023         struct ieee80211_sub_if_data *vlan;
1024         struct ieee80211_local *local = sdata->local;
1025         struct beacon_data *old_beacon;
1026         struct probe_resp *old_probe_resp;
1027         struct cfg80211_chan_def chandef;
1028
1029         sdata_assert_lock(sdata);
1030
1031         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1032         if (!old_beacon)
1033                 return -ENOENT;
1034         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1035
1036         /* abort any running channel switch */
1037         mutex_lock(&local->mtx);
1038         sdata->vif.csa_active = false;
1039         if (sdata->csa_block_tx) {
1040                 ieee80211_wake_vif_queues(local, sdata,
1041                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1042                 sdata->csa_block_tx = false;
1043         }
1044
1045         mutex_unlock(&local->mtx);
1046
1047         kfree(sdata->u.ap.next_beacon);
1048         sdata->u.ap.next_beacon = NULL;
1049
1050         /* turn off carrier for this interface and dependent VLANs */
1051         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1052                 netif_carrier_off(vlan->dev);
1053         netif_carrier_off(dev);
1054
1055         /* remove beacon and probe response */
1056         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1057         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1058         kfree_rcu(old_beacon, rcu_head);
1059         if (old_probe_resp)
1060                 kfree_rcu(old_probe_resp, rcu_head);
1061         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1062
1063         __sta_info_flush(sdata, true);
1064         ieee80211_free_keys(sdata, true);
1065
1066         sdata->vif.bss_conf.enable_beacon = false;
1067         sdata->vif.bss_conf.ssid_len = 0;
1068         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1069         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1070
1071         if (sdata->wdev.cac_started) {
1072                 chandef = sdata->vif.bss_conf.chandef;
1073                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1074                 cfg80211_cac_event(sdata->dev, &chandef,
1075                                    NL80211_RADAR_CAC_ABORTED,
1076                                    GFP_KERNEL);
1077         }
1078
1079         drv_stop_ap(sdata->local, sdata);
1080
1081         /* free all potentially still buffered bcast frames */
1082         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1083         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1084
1085         mutex_lock(&local->mtx);
1086         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1087         ieee80211_vif_release_channel(sdata);
1088         mutex_unlock(&local->mtx);
1089
1090         return 0;
1091 }
1092
1093 static int sta_apply_auth_flags(struct ieee80211_local *local,
1094                                 struct sta_info *sta,
1095                                 u32 mask, u32 set)
1096 {
1097         int ret;
1098
1099         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1100             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1101             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1102                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1103                 if (ret)
1104                         return ret;
1105         }
1106
1107         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1108             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1109             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1110                 /*
1111                  * When peer becomes associated, init rate control as
1112                  * well. Some drivers require rate control initialized
1113                  * before drv_sta_state() is called.
1114                  */
1115                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1116                         rate_control_rate_init(sta);
1117
1118                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1119                 if (ret)
1120                         return ret;
1121         }
1122
1123         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1124                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1125                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1126                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1127                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1128                 else
1129                         ret = 0;
1130                 if (ret)
1131                         return ret;
1132         }
1133
1134         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1135             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1136             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1137                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1138                 if (ret)
1139                         return ret;
1140         }
1141
1142         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1143             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1144             test_sta_flag(sta, WLAN_STA_AUTH)) {
1145                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1146                 if (ret)
1147                         return ret;
1148         }
1149
1150         return 0;
1151 }
1152
1153 static void sta_apply_mesh_params(struct ieee80211_local *local,
1154                                   struct sta_info *sta,
1155                                   struct station_parameters *params)
1156 {
1157 #ifdef CONFIG_MAC80211_MESH
1158         struct ieee80211_sub_if_data *sdata = sta->sdata;
1159         u32 changed = 0;
1160
1161         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1162                 switch (params->plink_state) {
1163                 case NL80211_PLINK_ESTAB:
1164                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1165                                 changed = mesh_plink_inc_estab_count(sdata);
1166                         sta->mesh->plink_state = params->plink_state;
1167                         sta->mesh->aid = params->peer_aid;
1168
1169                         ieee80211_mps_sta_status_update(sta);
1170                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1171                                       sdata->u.mesh.mshcfg.power_mode);
1172                         break;
1173                 case NL80211_PLINK_LISTEN:
1174                 case NL80211_PLINK_BLOCKED:
1175                 case NL80211_PLINK_OPN_SNT:
1176                 case NL80211_PLINK_OPN_RCVD:
1177                 case NL80211_PLINK_CNF_RCVD:
1178                 case NL80211_PLINK_HOLDING:
1179                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1180                                 changed = mesh_plink_dec_estab_count(sdata);
1181                         sta->mesh->plink_state = params->plink_state;
1182
1183                         ieee80211_mps_sta_status_update(sta);
1184                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1185                                         NL80211_MESH_POWER_UNKNOWN);
1186                         break;
1187                 default:
1188                         /*  nothing  */
1189                         break;
1190                 }
1191         }
1192
1193         switch (params->plink_action) {
1194         case NL80211_PLINK_ACTION_NO_ACTION:
1195                 /* nothing */
1196                 break;
1197         case NL80211_PLINK_ACTION_OPEN:
1198                 changed |= mesh_plink_open(sta);
1199                 break;
1200         case NL80211_PLINK_ACTION_BLOCK:
1201                 changed |= mesh_plink_block(sta);
1202                 break;
1203         }
1204
1205         if (params->local_pm)
1206                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1207                                                           params->local_pm);
1208
1209         ieee80211_mbss_info_change_notify(sdata, changed);
1210 #endif
1211 }
1212
1213 static int sta_apply_parameters(struct ieee80211_local *local,
1214                                 struct sta_info *sta,
1215                                 struct station_parameters *params)
1216 {
1217         int ret = 0;
1218         struct ieee80211_supported_band *sband;
1219         struct ieee80211_sub_if_data *sdata = sta->sdata;
1220         u32 mask, set;
1221
1222         sband = ieee80211_get_sband(sdata);
1223         if (!sband)
1224                 return -EINVAL;
1225
1226         mask = params->sta_flags_mask;
1227         set = params->sta_flags_set;
1228
1229         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1230                 /*
1231                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1232                  * API but must follow AUTHENTICATED for driver state.
1233                  */
1234                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1235                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1236                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1237                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1238         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1239                 /*
1240                  * TDLS -- everything follows authorized, but
1241                  * only becoming authorized is possible, not
1242                  * going back
1243                  */
1244                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1245                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1246                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1247                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1248                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1249                 }
1250         }
1251
1252         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1253             local->hw.queues >= IEEE80211_NUM_ACS)
1254                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1255
1256         /* auth flags will be set later for TDLS,
1257          * and for unassociated stations that move to assocaited */
1258         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1259             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1260               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1261                 ret = sta_apply_auth_flags(local, sta, mask, set);
1262                 if (ret)
1263                         return ret;
1264         }
1265
1266         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1267                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1268                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1269                 else
1270                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1274                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1275                 if (set & BIT(NL80211_STA_FLAG_MFP))
1276                         set_sta_flag(sta, WLAN_STA_MFP);
1277                 else
1278                         clear_sta_flag(sta, WLAN_STA_MFP);
1279         }
1280
1281         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1282                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1283                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1284                 else
1285                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1286         }
1287
1288         /* mark TDLS channel switch support, if the AP allows it */
1289         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1290             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1291             params->ext_capab_len >= 4 &&
1292             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1293                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1294
1295         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1296             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1297             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1298             params->ext_capab_len >= 8 &&
1299             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1300                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1301
1302         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1303                 sta->sta.uapsd_queues = params->uapsd_queues;
1304                 sta->sta.max_sp = params->max_sp;
1305         }
1306
1307         /* The sender might not have sent the last bit, consider it to be 0 */
1308         if (params->ext_capab_len >= 8) {
1309                 u8 val = (params->ext_capab[7] &
1310                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1311
1312                 /* we did get all the bits, take the MSB as well */
1313                 if (params->ext_capab_len >= 9) {
1314                         u8 val_msb = params->ext_capab[8] &
1315                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1316                         val_msb <<= 1;
1317                         val |= val_msb;
1318                 }
1319
1320                 switch (val) {
1321                 case 1:
1322                         sta->sta.max_amsdu_subframes = 32;
1323                         break;
1324                 case 2:
1325                         sta->sta.max_amsdu_subframes = 16;
1326                         break;
1327                 case 3:
1328                         sta->sta.max_amsdu_subframes = 8;
1329                         break;
1330                 default:
1331                         sta->sta.max_amsdu_subframes = 0;
1332                 }
1333         }
1334
1335         /*
1336          * cfg80211 validates this (1-2007) and allows setting the AID
1337          * only when creating a new station entry
1338          */
1339         if (params->aid)
1340                 sta->sta.aid = params->aid;
1341
1342         /*
1343          * Some of the following updates would be racy if called on an
1344          * existing station, via ieee80211_change_station(). However,
1345          * all such changes are rejected by cfg80211 except for updates
1346          * changing the supported rates on an existing but not yet used
1347          * TDLS peer.
1348          */
1349
1350         if (params->listen_interval >= 0)
1351                 sta->listen_interval = params->listen_interval;
1352
1353         if (params->supported_rates) {
1354                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1355                                          sband, params->supported_rates,
1356                                          params->supported_rates_len,
1357                                          &sta->sta.supp_rates[sband->band]);
1358         }
1359
1360         if (params->ht_capa)
1361                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1362                                                   params->ht_capa, sta);
1363
1364         /* VHT can override some HT caps such as the A-MSDU max length */
1365         if (params->vht_capa)
1366                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1367                                                     params->vht_capa, sta);
1368
1369         if (params->opmode_notif_used) {
1370                 /* returned value is only needed for rc update, but the
1371                  * rc isn't initialized here yet, so ignore it
1372                  */
1373                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1374                                               sband->band);
1375         }
1376
1377         if (params->support_p2p_ps >= 0)
1378                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1379
1380         if (ieee80211_vif_is_mesh(&sdata->vif))
1381                 sta_apply_mesh_params(local, sta, params);
1382
1383         /* set the STA state after all sta info from usermode has been set */
1384         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1385             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1386                 ret = sta_apply_auth_flags(local, sta, mask, set);
1387                 if (ret)
1388                         return ret;
1389         }
1390
1391         return 0;
1392 }
1393
1394 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1395                                  const u8 *mac,
1396                                  struct station_parameters *params)
1397 {
1398         struct ieee80211_local *local = wiphy_priv(wiphy);
1399         struct sta_info *sta;
1400         struct ieee80211_sub_if_data *sdata;
1401         int err;
1402
1403         if (params->vlan) {
1404                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1405
1406                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1407                     sdata->vif.type != NL80211_IFTYPE_AP)
1408                         return -EINVAL;
1409         } else
1410                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1411
1412         if (ether_addr_equal(mac, sdata->vif.addr))
1413                 return -EINVAL;
1414
1415         if (is_multicast_ether_addr(mac))
1416                 return -EINVAL;
1417
1418         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1419             sdata->vif.type == NL80211_IFTYPE_STATION &&
1420             !sdata->u.mgd.associated)
1421                 return -EINVAL;
1422
1423         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1424         if (!sta)
1425                 return -ENOMEM;
1426
1427         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1428                 sta->sta.tdls = true;
1429
1430         err = sta_apply_parameters(local, sta, params);
1431         if (err) {
1432                 sta_info_free(local, sta);
1433                 return err;
1434         }
1435
1436         /*
1437          * for TDLS and for unassociated station, rate control should be
1438          * initialized only when rates are known and station is marked
1439          * authorized/associated
1440          */
1441         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1442             test_sta_flag(sta, WLAN_STA_ASSOC))
1443                 rate_control_rate_init(sta);
1444
1445         err = sta_info_insert_rcu(sta);
1446         if (err) {
1447                 rcu_read_unlock();
1448                 return err;
1449         }
1450
1451         rcu_read_unlock();
1452
1453         return 0;
1454 }
1455
1456 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1457                                  struct station_del_parameters *params)
1458 {
1459         struct ieee80211_sub_if_data *sdata;
1460
1461         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1462
1463         if (params->mac)
1464                 return sta_info_destroy_addr_bss(sdata, params->mac);
1465
1466         sta_info_flush(sdata);
1467         return 0;
1468 }
1469
1470 static int ieee80211_change_station(struct wiphy *wiphy,
1471                                     struct net_device *dev, const u8 *mac,
1472                                     struct station_parameters *params)
1473 {
1474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475         struct ieee80211_local *local = wiphy_priv(wiphy);
1476         struct sta_info *sta;
1477         struct ieee80211_sub_if_data *vlansdata;
1478         enum cfg80211_station_type statype;
1479         int err;
1480
1481         mutex_lock(&local->sta_mtx);
1482
1483         sta = sta_info_get_bss(sdata, mac);
1484         if (!sta) {
1485                 err = -ENOENT;
1486                 goto out_err;
1487         }
1488
1489         switch (sdata->vif.type) {
1490         case NL80211_IFTYPE_MESH_POINT:
1491                 if (sdata->u.mesh.user_mpm)
1492                         statype = CFG80211_STA_MESH_PEER_USER;
1493                 else
1494                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1495                 break;
1496         case NL80211_IFTYPE_ADHOC:
1497                 statype = CFG80211_STA_IBSS;
1498                 break;
1499         case NL80211_IFTYPE_STATION:
1500                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1501                         statype = CFG80211_STA_AP_STA;
1502                         break;
1503                 }
1504                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1505                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1506                 else
1507                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1508                 break;
1509         case NL80211_IFTYPE_AP:
1510         case NL80211_IFTYPE_AP_VLAN:
1511                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1512                         statype = CFG80211_STA_AP_CLIENT;
1513                 else
1514                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1515                 break;
1516         default:
1517                 err = -EOPNOTSUPP;
1518                 goto out_err;
1519         }
1520
1521         err = cfg80211_check_station_change(wiphy, params, statype);
1522         if (err)
1523                 goto out_err;
1524
1525         if (params->vlan && params->vlan != sta->sdata->dev) {
1526                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1527
1528                 if (params->vlan->ieee80211_ptr->use_4addr) {
1529                         if (vlansdata->u.vlan.sta) {
1530                                 err = -EBUSY;
1531                                 goto out_err;
1532                         }
1533
1534                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1535                         __ieee80211_check_fast_rx_iface(vlansdata);
1536                 }
1537
1538                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1539                     sta->sdata->u.vlan.sta) {
1540                         ieee80211_clear_fast_rx(sta);
1541                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1542                 }
1543
1544                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1545                         ieee80211_vif_dec_num_mcast(sta->sdata);
1546
1547                 sta->sdata = vlansdata;
1548                 ieee80211_check_fast_xmit(sta);
1549
1550                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
1551                         ieee80211_vif_inc_num_mcast(sta->sdata);
1552                         cfg80211_send_layer2_update(sta->sdata->dev,
1553                                                     sta->sta.addr);
1554                 }
1555         }
1556
1557         err = sta_apply_parameters(local, sta, params);
1558         if (err)
1559                 goto out_err;
1560
1561         mutex_unlock(&local->sta_mtx);
1562
1563         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1564              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1565             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1566             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1567             sta_info_tx_streams(sta) != 1) {
1568                 ht_dbg(sta->sdata,
1569                        "%pM just authorized and MIMO capable - update SMPS\n",
1570                        sta->sta.addr);
1571                 ieee80211_send_smps_action(sta->sdata,
1572                         sta->sdata->bss->req_smps,
1573                         sta->sta.addr,
1574                         sta->sdata->vif.bss_conf.bssid);
1575         }
1576
1577         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1578             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1579                 ieee80211_recalc_ps(local);
1580                 ieee80211_recalc_ps_vif(sdata);
1581         }
1582
1583         return 0;
1584 out_err:
1585         mutex_unlock(&local->sta_mtx);
1586         return err;
1587 }
1588
1589 #ifdef CONFIG_MAC80211_MESH
1590 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1591                                const u8 *dst, const u8 *next_hop)
1592 {
1593         struct ieee80211_sub_if_data *sdata;
1594         struct mesh_path *mpath;
1595         struct sta_info *sta;
1596
1597         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1598
1599         rcu_read_lock();
1600         sta = sta_info_get(sdata, next_hop);
1601         if (!sta) {
1602                 rcu_read_unlock();
1603                 return -ENOENT;
1604         }
1605
1606         mpath = mesh_path_add(sdata, dst);
1607         if (IS_ERR(mpath)) {
1608                 rcu_read_unlock();
1609                 return PTR_ERR(mpath);
1610         }
1611
1612         mesh_path_fix_nexthop(mpath, sta);
1613
1614         rcu_read_unlock();
1615         return 0;
1616 }
1617
1618 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1619                                const u8 *dst)
1620 {
1621         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1622
1623         if (dst)
1624                 return mesh_path_del(sdata, dst);
1625
1626         mesh_path_flush_by_iface(sdata);
1627         return 0;
1628 }
1629
1630 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1631                                   const u8 *dst, const u8 *next_hop)
1632 {
1633         struct ieee80211_sub_if_data *sdata;
1634         struct mesh_path *mpath;
1635         struct sta_info *sta;
1636
1637         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1638
1639         rcu_read_lock();
1640
1641         sta = sta_info_get(sdata, next_hop);
1642         if (!sta) {
1643                 rcu_read_unlock();
1644                 return -ENOENT;
1645         }
1646
1647         mpath = mesh_path_lookup(sdata, dst);
1648         if (!mpath) {
1649                 rcu_read_unlock();
1650                 return -ENOENT;
1651         }
1652
1653         mesh_path_fix_nexthop(mpath, sta);
1654
1655         rcu_read_unlock();
1656         return 0;
1657 }
1658
1659 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1660                             struct mpath_info *pinfo)
1661 {
1662         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1663
1664         if (next_hop_sta)
1665                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1666         else
1667                 eth_zero_addr(next_hop);
1668
1669         memset(pinfo, 0, sizeof(*pinfo));
1670
1671         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1672
1673         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1674                         MPATH_INFO_SN |
1675                         MPATH_INFO_METRIC |
1676                         MPATH_INFO_EXPTIME |
1677                         MPATH_INFO_DISCOVERY_TIMEOUT |
1678                         MPATH_INFO_DISCOVERY_RETRIES |
1679                         MPATH_INFO_FLAGS;
1680
1681         pinfo->frame_qlen = mpath->frame_queue.qlen;
1682         pinfo->sn = mpath->sn;
1683         pinfo->metric = mpath->metric;
1684         if (time_before(jiffies, mpath->exp_time))
1685                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1686         pinfo->discovery_timeout =
1687                         jiffies_to_msecs(mpath->discovery_timeout);
1688         pinfo->discovery_retries = mpath->discovery_retries;
1689         if (mpath->flags & MESH_PATH_ACTIVE)
1690                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1691         if (mpath->flags & MESH_PATH_RESOLVING)
1692                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1693         if (mpath->flags & MESH_PATH_SN_VALID)
1694                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1695         if (mpath->flags & MESH_PATH_FIXED)
1696                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1697         if (mpath->flags & MESH_PATH_RESOLVED)
1698                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1699 }
1700
1701 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1702                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1703
1704 {
1705         struct ieee80211_sub_if_data *sdata;
1706         struct mesh_path *mpath;
1707
1708         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1709
1710         rcu_read_lock();
1711         mpath = mesh_path_lookup(sdata, dst);
1712         if (!mpath) {
1713                 rcu_read_unlock();
1714                 return -ENOENT;
1715         }
1716         memcpy(dst, mpath->dst, ETH_ALEN);
1717         mpath_set_pinfo(mpath, next_hop, pinfo);
1718         rcu_read_unlock();
1719         return 0;
1720 }
1721
1722 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1723                                 int idx, u8 *dst, u8 *next_hop,
1724                                 struct mpath_info *pinfo)
1725 {
1726         struct ieee80211_sub_if_data *sdata;
1727         struct mesh_path *mpath;
1728
1729         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731         rcu_read_lock();
1732         mpath = mesh_path_lookup_by_idx(sdata, idx);
1733         if (!mpath) {
1734                 rcu_read_unlock();
1735                 return -ENOENT;
1736         }
1737         memcpy(dst, mpath->dst, ETH_ALEN);
1738         mpath_set_pinfo(mpath, next_hop, pinfo);
1739         rcu_read_unlock();
1740         return 0;
1741 }
1742
1743 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1744                           struct mpath_info *pinfo)
1745 {
1746         memset(pinfo, 0, sizeof(*pinfo));
1747         memcpy(mpp, mpath->mpp, ETH_ALEN);
1748
1749         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1750 }
1751
1752 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1753                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1754
1755 {
1756         struct ieee80211_sub_if_data *sdata;
1757         struct mesh_path *mpath;
1758
1759         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1760
1761         rcu_read_lock();
1762         mpath = mpp_path_lookup(sdata, dst);
1763         if (!mpath) {
1764                 rcu_read_unlock();
1765                 return -ENOENT;
1766         }
1767         memcpy(dst, mpath->dst, ETH_ALEN);
1768         mpp_set_pinfo(mpath, mpp, pinfo);
1769         rcu_read_unlock();
1770         return 0;
1771 }
1772
1773 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1774                               int idx, u8 *dst, u8 *mpp,
1775                               struct mpath_info *pinfo)
1776 {
1777         struct ieee80211_sub_if_data *sdata;
1778         struct mesh_path *mpath;
1779
1780         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1781
1782         rcu_read_lock();
1783         mpath = mpp_path_lookup_by_idx(sdata, idx);
1784         if (!mpath) {
1785                 rcu_read_unlock();
1786                 return -ENOENT;
1787         }
1788         memcpy(dst, mpath->dst, ETH_ALEN);
1789         mpp_set_pinfo(mpath, mpp, pinfo);
1790         rcu_read_unlock();
1791         return 0;
1792 }
1793
1794 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1795                                 struct net_device *dev,
1796                                 struct mesh_config *conf)
1797 {
1798         struct ieee80211_sub_if_data *sdata;
1799         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800
1801         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1802         return 0;
1803 }
1804
1805 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1806 {
1807         return (mask >> (parm-1)) & 0x1;
1808 }
1809
1810 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1811                 const struct mesh_setup *setup)
1812 {
1813         u8 *new_ie;
1814         const u8 *old_ie;
1815         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1816                                         struct ieee80211_sub_if_data, u.mesh);
1817
1818         /* allocate information elements */
1819         new_ie = NULL;
1820         old_ie = ifmsh->ie;
1821
1822         if (setup->ie_len) {
1823                 new_ie = kmemdup(setup->ie, setup->ie_len,
1824                                 GFP_KERNEL);
1825                 if (!new_ie)
1826                         return -ENOMEM;
1827         }
1828         ifmsh->ie_len = setup->ie_len;
1829         ifmsh->ie = new_ie;
1830         kfree(old_ie);
1831
1832         /* now copy the rest of the setup parameters */
1833         ifmsh->mesh_id_len = setup->mesh_id_len;
1834         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1835         ifmsh->mesh_sp_id = setup->sync_method;
1836         ifmsh->mesh_pp_id = setup->path_sel_proto;
1837         ifmsh->mesh_pm_id = setup->path_metric;
1838         ifmsh->user_mpm = setup->user_mpm;
1839         ifmsh->mesh_auth_id = setup->auth_id;
1840         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1841         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1842         if (setup->is_authenticated)
1843                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1844         if (setup->is_secure)
1845                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1846
1847         /* mcast rate setting in Mesh Node */
1848         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1849                                                 sizeof(setup->mcast_rate));
1850         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1851
1852         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1853         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1854
1855         return 0;
1856 }
1857
1858 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1859                                         struct net_device *dev, u32 mask,
1860                                         const struct mesh_config *nconf)
1861 {
1862         struct mesh_config *conf;
1863         struct ieee80211_sub_if_data *sdata;
1864         struct ieee80211_if_mesh *ifmsh;
1865
1866         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1867         ifmsh = &sdata->u.mesh;
1868
1869         /* Set the config options which we are interested in setting */
1870         conf = &(sdata->u.mesh.mshcfg);
1871         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1872                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1873         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1874                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1875         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1876                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1878                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1879         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1880                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1881         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1882                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1883         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1884                 conf->element_ttl = nconf->element_ttl;
1885         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1886                 if (ifmsh->user_mpm)
1887                         return -EBUSY;
1888                 conf->auto_open_plinks = nconf->auto_open_plinks;
1889         }
1890         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1891                 conf->dot11MeshNbrOffsetMaxNeighbor =
1892                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1893         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1894                 conf->dot11MeshHWMPmaxPREQretries =
1895                         nconf->dot11MeshHWMPmaxPREQretries;
1896         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1897                 conf->path_refresh_time = nconf->path_refresh_time;
1898         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1899                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1900         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1901                 conf->dot11MeshHWMPactivePathTimeout =
1902                         nconf->dot11MeshHWMPactivePathTimeout;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1904                 conf->dot11MeshHWMPpreqMinInterval =
1905                         nconf->dot11MeshHWMPpreqMinInterval;
1906         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1907                 conf->dot11MeshHWMPperrMinInterval =
1908                         nconf->dot11MeshHWMPperrMinInterval;
1909         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1910                            mask))
1911                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1912                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1913         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1914                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1915                 ieee80211_mesh_root_setup(ifmsh);
1916         }
1917         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1918                 /* our current gate announcement implementation rides on root
1919                  * announcements, so require this ifmsh to also be a root node
1920                  * */
1921                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1922                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1923                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1924                         ieee80211_mesh_root_setup(ifmsh);
1925                 }
1926                 conf->dot11MeshGateAnnouncementProtocol =
1927                         nconf->dot11MeshGateAnnouncementProtocol;
1928         }
1929         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1930                 conf->dot11MeshHWMPRannInterval =
1931                         nconf->dot11MeshHWMPRannInterval;
1932         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1933                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1934         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1935                 /* our RSSI threshold implementation is supported only for
1936                  * devices that report signal in dBm.
1937                  */
1938                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1939                         return -ENOTSUPP;
1940                 conf->rssi_threshold = nconf->rssi_threshold;
1941         }
1942         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1943                 conf->ht_opmode = nconf->ht_opmode;
1944                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1945                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1946         }
1947         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1948                 conf->dot11MeshHWMPactivePathToRootTimeout =
1949                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1950         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1951                 conf->dot11MeshHWMProotInterval =
1952                         nconf->dot11MeshHWMProotInterval;
1953         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1954                 conf->dot11MeshHWMPconfirmationInterval =
1955                         nconf->dot11MeshHWMPconfirmationInterval;
1956         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1957                 conf->power_mode = nconf->power_mode;
1958                 ieee80211_mps_local_status_update(sdata);
1959         }
1960         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1961                 conf->dot11MeshAwakeWindowDuration =
1962                         nconf->dot11MeshAwakeWindowDuration;
1963         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1964                 conf->plink_timeout = nconf->plink_timeout;
1965         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1966         return 0;
1967 }
1968
1969 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1970                                const struct mesh_config *conf,
1971                                const struct mesh_setup *setup)
1972 {
1973         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1974         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1975         int err;
1976
1977         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1978         err = copy_mesh_setup(ifmsh, setup);
1979         if (err)
1980                 return err;
1981
1982         /* can mesh use other SMPS modes? */
1983         sdata->smps_mode = IEEE80211_SMPS_OFF;
1984         sdata->needed_rx_chains = sdata->local->rx_chains;
1985
1986         mutex_lock(&sdata->local->mtx);
1987         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1988                                         IEEE80211_CHANCTX_SHARED);
1989         mutex_unlock(&sdata->local->mtx);
1990         if (err)
1991                 return err;
1992
1993         return ieee80211_start_mesh(sdata);
1994 }
1995
1996 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1997 {
1998         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1999
2000         ieee80211_stop_mesh(sdata);
2001         mutex_lock(&sdata->local->mtx);
2002         ieee80211_vif_release_channel(sdata);
2003         kfree(sdata->u.mesh.ie);
2004         mutex_unlock(&sdata->local->mtx);
2005
2006         return 0;
2007 }
2008 #endif
2009
2010 static int ieee80211_change_bss(struct wiphy *wiphy,
2011                                 struct net_device *dev,
2012                                 struct bss_parameters *params)
2013 {
2014         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2015         struct ieee80211_supported_band *sband;
2016         u32 changed = 0;
2017
2018         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2019                 return -ENOENT;
2020
2021         sband = ieee80211_get_sband(sdata);
2022         if (!sband)
2023                 return -EINVAL;
2024
2025         if (params->use_cts_prot >= 0) {
2026                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2027                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2028         }
2029         if (params->use_short_preamble >= 0) {
2030                 sdata->vif.bss_conf.use_short_preamble =
2031                         params->use_short_preamble;
2032                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2033         }
2034
2035         if (!sdata->vif.bss_conf.use_short_slot &&
2036             sband->band == NL80211_BAND_5GHZ) {
2037                 sdata->vif.bss_conf.use_short_slot = true;
2038                 changed |= BSS_CHANGED_ERP_SLOT;
2039         }
2040
2041         if (params->use_short_slot_time >= 0) {
2042                 sdata->vif.bss_conf.use_short_slot =
2043                         params->use_short_slot_time;
2044                 changed |= BSS_CHANGED_ERP_SLOT;
2045         }
2046
2047         if (params->basic_rates) {
2048                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2049                                          wiphy->bands[sband->band],
2050                                          params->basic_rates,
2051                                          params->basic_rates_len,
2052                                          &sdata->vif.bss_conf.basic_rates);
2053                 changed |= BSS_CHANGED_BASIC_RATES;
2054                 ieee80211_check_rate_mask(sdata);
2055         }
2056
2057         if (params->ap_isolate >= 0) {
2058                 if (params->ap_isolate)
2059                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2060                 else
2061                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2062                 ieee80211_check_fast_rx_iface(sdata);
2063         }
2064
2065         if (params->ht_opmode >= 0) {
2066                 sdata->vif.bss_conf.ht_operation_mode =
2067                         (u16) params->ht_opmode;
2068                 changed |= BSS_CHANGED_HT;
2069         }
2070
2071         if (params->p2p_ctwindow >= 0) {
2072                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2073                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2074                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2075                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2076                 changed |= BSS_CHANGED_P2P_PS;
2077         }
2078
2079         if (params->p2p_opp_ps > 0) {
2080                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2081                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2082                 changed |= BSS_CHANGED_P2P_PS;
2083         } else if (params->p2p_opp_ps == 0) {
2084                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2085                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2086                 changed |= BSS_CHANGED_P2P_PS;
2087         }
2088
2089         ieee80211_bss_info_change_notify(sdata, changed);
2090
2091         return 0;
2092 }
2093
2094 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2095                                     struct net_device *dev,
2096                                     struct ieee80211_txq_params *params)
2097 {
2098         struct ieee80211_local *local = wiphy_priv(wiphy);
2099         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2100         struct ieee80211_tx_queue_params p;
2101
2102         if (!local->ops->conf_tx)
2103                 return -EOPNOTSUPP;
2104
2105         if (local->hw.queues < IEEE80211_NUM_ACS)
2106                 return -EOPNOTSUPP;
2107
2108         memset(&p, 0, sizeof(p));
2109         p.aifs = params->aifs;
2110         p.cw_max = params->cwmax;
2111         p.cw_min = params->cwmin;
2112         p.txop = params->txop;
2113
2114         /*
2115          * Setting tx queue params disables u-apsd because it's only
2116          * called in master mode.
2117          */
2118         p.uapsd = false;
2119
2120         sdata->tx_conf[params->ac] = p;
2121         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2122                 wiphy_debug(local->hw.wiphy,
2123                             "failed to set TX queue parameters for AC %d\n",
2124                             params->ac);
2125                 return -EINVAL;
2126         }
2127
2128         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2129
2130         return 0;
2131 }
2132
2133 #ifdef CONFIG_PM
2134 static int ieee80211_suspend(struct wiphy *wiphy,
2135                              struct cfg80211_wowlan *wowlan)
2136 {
2137         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2138 }
2139
2140 static int ieee80211_resume(struct wiphy *wiphy)
2141 {
2142         return __ieee80211_resume(wiphy_priv(wiphy));
2143 }
2144 #else
2145 #define ieee80211_suspend NULL
2146 #define ieee80211_resume NULL
2147 #endif
2148
2149 static int ieee80211_scan(struct wiphy *wiphy,
2150                           struct cfg80211_scan_request *req)
2151 {
2152         struct ieee80211_sub_if_data *sdata;
2153
2154         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2155
2156         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2157         case NL80211_IFTYPE_STATION:
2158         case NL80211_IFTYPE_ADHOC:
2159         case NL80211_IFTYPE_MESH_POINT:
2160         case NL80211_IFTYPE_P2P_CLIENT:
2161         case NL80211_IFTYPE_P2P_DEVICE:
2162                 break;
2163         case NL80211_IFTYPE_P2P_GO:
2164                 if (sdata->local->ops->hw_scan)
2165                         break;
2166                 /*
2167                  * FIXME: implement NoA while scanning in software,
2168                  * for now fall through to allow scanning only when
2169                  * beaconing hasn't been configured yet
2170                  */
2171         case NL80211_IFTYPE_AP:
2172                 /*
2173                  * If the scan has been forced (and the driver supports
2174                  * forcing), don't care about being beaconing already.
2175                  * This will create problems to the attached stations (e.g. all
2176                  * the  frames sent while scanning on other channel will be
2177                  * lost)
2178                  */
2179                 if (sdata->u.ap.beacon &&
2180                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2181                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2182                         return -EOPNOTSUPP;
2183                 break;
2184         case NL80211_IFTYPE_NAN:
2185         default:
2186                 return -EOPNOTSUPP;
2187         }
2188
2189         return ieee80211_request_scan(sdata, req);
2190 }
2191
2192 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2193 {
2194         ieee80211_scan_cancel(wiphy_priv(wiphy));
2195 }
2196
2197 static int
2198 ieee80211_sched_scan_start(struct wiphy *wiphy,
2199                            struct net_device *dev,
2200                            struct cfg80211_sched_scan_request *req)
2201 {
2202         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2203
2204         if (!sdata->local->ops->sched_scan_start)
2205                 return -EOPNOTSUPP;
2206
2207         return ieee80211_request_sched_scan_start(sdata, req);
2208 }
2209
2210 static int
2211 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2212                           u64 reqid)
2213 {
2214         struct ieee80211_local *local = wiphy_priv(wiphy);
2215
2216         if (!local->ops->sched_scan_stop)
2217                 return -EOPNOTSUPP;
2218
2219         return ieee80211_request_sched_scan_stop(local);
2220 }
2221
2222 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2223                           struct cfg80211_auth_request *req)
2224 {
2225         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2226 }
2227
2228 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2229                            struct cfg80211_assoc_request *req)
2230 {
2231         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2232 }
2233
2234 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2235                             struct cfg80211_deauth_request *req)
2236 {
2237         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2238 }
2239
2240 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2241                               struct cfg80211_disassoc_request *req)
2242 {
2243         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2244 }
2245
2246 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2247                                struct cfg80211_ibss_params *params)
2248 {
2249         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2250 }
2251
2252 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2253 {
2254         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2255 }
2256
2257 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2258                               struct ocb_setup *setup)
2259 {
2260         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2261 }
2262
2263 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2264 {
2265         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2266 }
2267
2268 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2269                                     int rate[NUM_NL80211_BANDS])
2270 {
2271         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2272
2273         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2274                sizeof(int) * NUM_NL80211_BANDS);
2275
2276         return 0;
2277 }
2278
2279 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2280 {
2281         struct ieee80211_local *local = wiphy_priv(wiphy);
2282         int err;
2283
2284         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2285                 ieee80211_check_fast_xmit_all(local);
2286
2287                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2288
2289                 if (err) {
2290                         ieee80211_check_fast_xmit_all(local);
2291                         return err;
2292                 }
2293         }
2294
2295         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2296             (changed & WIPHY_PARAM_DYN_ACK)) {
2297                 s16 coverage_class;
2298
2299                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2300                                         wiphy->coverage_class : -1;
2301                 err = drv_set_coverage_class(local, coverage_class);
2302
2303                 if (err)
2304                         return err;
2305         }
2306
2307         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2308                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2309
2310                 if (err)
2311                         return err;
2312         }
2313
2314         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2315                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2316                         return -EINVAL;
2317                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2318         }
2319         if (changed & WIPHY_PARAM_RETRY_LONG) {
2320                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2321                         return -EINVAL;
2322                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2323         }
2324         if (changed &
2325             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2326                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2327
2328         return 0;
2329 }
2330
2331 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2332                                   struct wireless_dev *wdev,
2333                                   enum nl80211_tx_power_setting type, int mbm)
2334 {
2335         struct ieee80211_local *local = wiphy_priv(wiphy);
2336         struct ieee80211_sub_if_data *sdata;
2337         enum nl80211_tx_power_setting txp_type = type;
2338         bool update_txp_type = false;
2339         bool has_monitor = false;
2340
2341         if (wdev) {
2342                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2343
2344                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2345                         sdata = rtnl_dereference(local->monitor_sdata);
2346                         if (!sdata)
2347                                 return -EOPNOTSUPP;
2348                 }
2349
2350                 switch (type) {
2351                 case NL80211_TX_POWER_AUTOMATIC:
2352                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2353                         txp_type = NL80211_TX_POWER_LIMITED;
2354                         break;
2355                 case NL80211_TX_POWER_LIMITED:
2356                 case NL80211_TX_POWER_FIXED:
2357                         if (mbm < 0 || (mbm % 100))
2358                                 return -EOPNOTSUPP;
2359                         sdata->user_power_level = MBM_TO_DBM(mbm);
2360                         break;
2361                 }
2362
2363                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2364                         update_txp_type = true;
2365                         sdata->vif.bss_conf.txpower_type = txp_type;
2366                 }
2367
2368                 ieee80211_recalc_txpower(sdata, update_txp_type);
2369
2370                 return 0;
2371         }
2372
2373         switch (type) {
2374         case NL80211_TX_POWER_AUTOMATIC:
2375                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2376                 txp_type = NL80211_TX_POWER_LIMITED;
2377                 break;
2378         case NL80211_TX_POWER_LIMITED:
2379         case NL80211_TX_POWER_FIXED:
2380                 if (mbm < 0 || (mbm % 100))
2381                         return -EOPNOTSUPP;
2382                 local->user_power_level = MBM_TO_DBM(mbm);
2383                 break;
2384         }
2385
2386         mutex_lock(&local->iflist_mtx);
2387         list_for_each_entry(sdata, &local->interfaces, list) {
2388                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2389                         has_monitor = true;
2390                         continue;
2391                 }
2392                 sdata->user_power_level = local->user_power_level;
2393                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2394                         update_txp_type = true;
2395                 sdata->vif.bss_conf.txpower_type = txp_type;
2396         }
2397         list_for_each_entry(sdata, &local->interfaces, list) {
2398                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2399                         continue;
2400                 ieee80211_recalc_txpower(sdata, update_txp_type);
2401         }
2402         mutex_unlock(&local->iflist_mtx);
2403
2404         if (has_monitor) {
2405                 sdata = rtnl_dereference(local->monitor_sdata);
2406                 if (sdata) {
2407                         sdata->user_power_level = local->user_power_level;
2408                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2409                                 update_txp_type = true;
2410                         sdata->vif.bss_conf.txpower_type = txp_type;
2411
2412                         ieee80211_recalc_txpower(sdata, update_txp_type);
2413                 }
2414         }
2415
2416         return 0;
2417 }
2418
2419 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2420                                   struct wireless_dev *wdev,
2421                                   int *dbm)
2422 {
2423         struct ieee80211_local *local = wiphy_priv(wiphy);
2424         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2425
2426         if (local->ops->get_txpower)
2427                 return drv_get_txpower(local, sdata, dbm);
2428
2429         if (!local->use_chanctx)
2430                 *dbm = local->hw.conf.power_level;
2431         else
2432                 *dbm = sdata->vif.bss_conf.txpower;
2433
2434         return 0;
2435 }
2436
2437 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2438                                   const u8 *addr)
2439 {
2440         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2441
2442         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2443
2444         return 0;
2445 }
2446
2447 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2448 {
2449         struct ieee80211_local *local = wiphy_priv(wiphy);
2450
2451         drv_rfkill_poll(local);
2452 }
2453
2454 #ifdef CONFIG_NL80211_TESTMODE
2455 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2456                                   struct wireless_dev *wdev,
2457                                   void *data, int len)
2458 {
2459         struct ieee80211_local *local = wiphy_priv(wiphy);
2460         struct ieee80211_vif *vif = NULL;
2461
2462         if (!local->ops->testmode_cmd)
2463                 return -EOPNOTSUPP;
2464
2465         if (wdev) {
2466                 struct ieee80211_sub_if_data *sdata;
2467
2468                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2469                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2470                         vif = &sdata->vif;
2471         }
2472
2473         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2474 }
2475
2476 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2477                                    struct sk_buff *skb,
2478                                    struct netlink_callback *cb,
2479                                    void *data, int len)
2480 {
2481         struct ieee80211_local *local = wiphy_priv(wiphy);
2482
2483         if (!local->ops->testmode_dump)
2484                 return -EOPNOTSUPP;
2485
2486         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2487 }
2488 #endif
2489
2490 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2491                                 enum ieee80211_smps_mode smps_mode)
2492 {
2493         struct sta_info *sta;
2494         enum ieee80211_smps_mode old_req;
2495
2496         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2497                 return -EINVAL;
2498
2499         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2500                 return 0;
2501
2502         old_req = sdata->u.ap.req_smps;
2503         sdata->u.ap.req_smps = smps_mode;
2504
2505         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2506         if (old_req == smps_mode ||
2507             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2508                 return 0;
2509
2510         ht_dbg(sdata,
2511                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2512                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2513
2514         mutex_lock(&sdata->local->sta_mtx);
2515         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2516                 /*
2517                  * Only stations associated to our AP and
2518                  * associated VLANs
2519                  */
2520                 if (sta->sdata->bss != &sdata->u.ap)
2521                         continue;
2522
2523                 /* This station doesn't support MIMO - skip it */
2524                 if (sta_info_tx_streams(sta) == 1)
2525                         continue;
2526
2527                 /*
2528                  * Don't wake up a STA just to send the action frame
2529                  * unless we are getting more restrictive.
2530                  */
2531                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2532                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2533                                                    smps_mode)) {
2534                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2535                                sta->sta.addr);
2536                         continue;
2537                 }
2538
2539                 /*
2540                  * If the STA is not authorized, wait until it gets
2541                  * authorized and the action frame will be sent then.
2542                  */
2543                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2544                         continue;
2545
2546                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2547                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2548                                            sdata->vif.bss_conf.bssid);
2549         }
2550         mutex_unlock(&sdata->local->sta_mtx);
2551
2552         sdata->smps_mode = smps_mode;
2553         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2554
2555         return 0;
2556 }
2557
2558 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2559                                  enum ieee80211_smps_mode smps_mode)
2560 {
2561         const u8 *ap;
2562         enum ieee80211_smps_mode old_req;
2563         int err;
2564         struct sta_info *sta;
2565         bool tdls_peer_found = false;
2566
2567         lockdep_assert_held(&sdata->wdev.mtx);
2568
2569         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2570                 return -EINVAL;
2571
2572         old_req = sdata->u.mgd.req_smps;
2573         sdata->u.mgd.req_smps = smps_mode;
2574
2575         if (old_req == smps_mode &&
2576             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2577                 return 0;
2578
2579         /*
2580          * If not associated, or current association is not an HT
2581          * association, there's no need to do anything, just store
2582          * the new value until we associate.
2583          */
2584         if (!sdata->u.mgd.associated ||
2585             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2586                 return 0;
2587
2588         ap = sdata->u.mgd.associated->bssid;
2589
2590         rcu_read_lock();
2591         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2592                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2593                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2594                         continue;
2595
2596                 tdls_peer_found = true;
2597                 break;
2598         }
2599         rcu_read_unlock();
2600
2601         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2602                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2603                         smps_mode = IEEE80211_SMPS_OFF;
2604                 else
2605                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2606         }
2607
2608         /* send SM PS frame to AP */
2609         err = ieee80211_send_smps_action(sdata, smps_mode,
2610                                          ap, ap);
2611         if (err)
2612                 sdata->u.mgd.req_smps = old_req;
2613         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2614                 ieee80211_teardown_tdls_peers(sdata);
2615
2616         return err;
2617 }
2618
2619 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2620                                     bool enabled, int timeout)
2621 {
2622         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2623         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2624
2625         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2626                 return -EOPNOTSUPP;
2627
2628         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2629                 return -EOPNOTSUPP;
2630
2631         if (enabled == sdata->u.mgd.powersave &&
2632             timeout == local->dynamic_ps_forced_timeout)
2633                 return 0;
2634
2635         sdata->u.mgd.powersave = enabled;
2636         local->dynamic_ps_forced_timeout = timeout;
2637
2638         /* no change, but if automatic follow powersave */
2639         sdata_lock(sdata);
2640         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2641         sdata_unlock(sdata);
2642
2643         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2644                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2645
2646         ieee80211_recalc_ps(local);
2647         ieee80211_recalc_ps_vif(sdata);
2648
2649         return 0;
2650 }
2651
2652 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2653                                          struct net_device *dev,
2654                                          s32 rssi_thold, u32 rssi_hyst)
2655 {
2656         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2657         struct ieee80211_vif *vif = &sdata->vif;
2658         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2659
2660         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2661             rssi_hyst == bss_conf->cqm_rssi_hyst)
2662                 return 0;
2663
2664         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2665             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2666                 return -EOPNOTSUPP;
2667
2668         bss_conf->cqm_rssi_thold = rssi_thold;
2669         bss_conf->cqm_rssi_hyst = rssi_hyst;
2670         bss_conf->cqm_rssi_low = 0;
2671         bss_conf->cqm_rssi_high = 0;
2672         sdata->u.mgd.last_cqm_event_signal = 0;
2673
2674         /* tell the driver upon association, unless already associated */
2675         if (sdata->u.mgd.associated &&
2676             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2677                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2678
2679         return 0;
2680 }
2681
2682 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2683                                                struct net_device *dev,
2684                                                s32 rssi_low, s32 rssi_high)
2685 {
2686         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2687         struct ieee80211_vif *vif = &sdata->vif;
2688         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2689
2690         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2691                 return -EOPNOTSUPP;
2692
2693         bss_conf->cqm_rssi_low = rssi_low;
2694         bss_conf->cqm_rssi_high = rssi_high;
2695         bss_conf->cqm_rssi_thold = 0;
2696         bss_conf->cqm_rssi_hyst = 0;
2697         sdata->u.mgd.last_cqm_event_signal = 0;
2698
2699         /* tell the driver upon association, unless already associated */
2700         if (sdata->u.mgd.associated &&
2701             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2702                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2703
2704         return 0;
2705 }
2706
2707 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2708                                       struct net_device *dev,
2709                                       const u8 *addr,
2710                                       const struct cfg80211_bitrate_mask *mask)
2711 {
2712         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2713         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2714         int i, ret;
2715
2716         if (!ieee80211_sdata_running(sdata))
2717                 return -ENETDOWN;
2718
2719         /*
2720          * If active validate the setting and reject it if it doesn't leave
2721          * at least one basic rate usable, since we really have to be able
2722          * to send something, and if we're an AP we have to be able to do
2723          * so at a basic rate so that all clients can receive it.
2724          */
2725         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2726             sdata->vif.bss_conf.chandef.chan) {
2727                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2728                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2729
2730                 if (!(mask->control[band].legacy & basic_rates))
2731                         return -EINVAL;
2732         }
2733
2734         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2735                 ret = drv_set_bitrate_mask(local, sdata, mask);
2736                 if (ret)
2737                         return ret;
2738         }
2739
2740         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2741                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2742                 int j;
2743
2744                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2745                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2746                        sizeof(mask->control[i].ht_mcs));
2747                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2748                        mask->control[i].vht_mcs,
2749                        sizeof(mask->control[i].vht_mcs));
2750
2751                 sdata->rc_has_mcs_mask[i] = false;
2752                 sdata->rc_has_vht_mcs_mask[i] = false;
2753                 if (!sband)
2754                         continue;
2755
2756                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2757                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
2758                                 sdata->rc_has_mcs_mask[i] = true;
2759                                 break;
2760                         }
2761                 }
2762
2763                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2764                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
2765                                 sdata->rc_has_vht_mcs_mask[i] = true;
2766                                 break;
2767                         }
2768                 }
2769         }
2770
2771         return 0;
2772 }
2773
2774 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2775                                            struct net_device *dev,
2776                                            struct cfg80211_chan_def *chandef,
2777                                            u32 cac_time_ms)
2778 {
2779         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2780         struct ieee80211_local *local = sdata->local;
2781         int err;
2782
2783         mutex_lock(&local->mtx);
2784         if (!list_empty(&local->roc_list) || local->scanning) {
2785                 err = -EBUSY;
2786                 goto out_unlock;
2787         }
2788
2789         /* whatever, but channel contexts should not complain about that one */
2790         sdata->smps_mode = IEEE80211_SMPS_OFF;
2791         sdata->needed_rx_chains = local->rx_chains;
2792
2793         err = ieee80211_vif_use_channel(sdata, chandef,
2794                                         IEEE80211_CHANCTX_SHARED);
2795         if (err)
2796                 goto out_unlock;
2797
2798         ieee80211_queue_delayed_work(&sdata->local->hw,
2799                                      &sdata->dfs_cac_timer_work,
2800                                      msecs_to_jiffies(cac_time_ms));
2801
2802  out_unlock:
2803         mutex_unlock(&local->mtx);
2804         return err;
2805 }
2806
2807 static void ieee80211_end_cac(struct wiphy *wiphy,
2808                               struct net_device *dev)
2809 {
2810         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2811         struct ieee80211_local *local = sdata->local;
2812
2813         mutex_lock(&local->mtx);
2814         list_for_each_entry(sdata, &local->interfaces, list) {
2815                 /* it might be waiting for the local->mtx, but then
2816                  * by the time it gets it, sdata->wdev.cac_started
2817                  * will no longer be true
2818                  */
2819                 cancel_delayed_work(&sdata->dfs_cac_timer_work);
2820
2821                 if (sdata->wdev.cac_started) {
2822                         ieee80211_vif_release_channel(sdata);
2823                         sdata->wdev.cac_started = false;
2824                 }
2825         }
2826         mutex_unlock(&local->mtx);
2827 }
2828
2829 static struct cfg80211_beacon_data *
2830 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2831 {
2832         struct cfg80211_beacon_data *new_beacon;
2833         u8 *pos;
2834         int len;
2835
2836         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2837               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2838               beacon->probe_resp_len;
2839
2840         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2841         if (!new_beacon)
2842                 return NULL;
2843
2844         pos = (u8 *)(new_beacon + 1);
2845         if (beacon->head_len) {
2846                 new_beacon->head_len = beacon->head_len;
2847                 new_beacon->head = pos;
2848                 memcpy(pos, beacon->head, beacon->head_len);
2849                 pos += beacon->head_len;
2850         }
2851         if (beacon->tail_len) {
2852                 new_beacon->tail_len = beacon->tail_len;
2853                 new_beacon->tail = pos;
2854                 memcpy(pos, beacon->tail, beacon->tail_len);
2855                 pos += beacon->tail_len;
2856         }
2857         if (beacon->beacon_ies_len) {
2858                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2859                 new_beacon->beacon_ies = pos;
2860                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2861                 pos += beacon->beacon_ies_len;
2862         }
2863         if (beacon->proberesp_ies_len) {
2864                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2865                 new_beacon->proberesp_ies = pos;
2866                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2867                 pos += beacon->proberesp_ies_len;
2868         }
2869         if (beacon->assocresp_ies_len) {
2870                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2871                 new_beacon->assocresp_ies = pos;
2872                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2873                 pos += beacon->assocresp_ies_len;
2874         }
2875         if (beacon->probe_resp_len) {
2876                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2877                 new_beacon->probe_resp = pos;
2878                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2879                 pos += beacon->probe_resp_len;
2880         }
2881
2882         return new_beacon;
2883 }
2884
2885 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2886 {
2887         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2888
2889         ieee80211_queue_work(&sdata->local->hw,
2890                              &sdata->csa_finalize_work);
2891 }
2892 EXPORT_SYMBOL(ieee80211_csa_finish);
2893
2894 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2895                                           u32 *changed)
2896 {
2897         int err;
2898
2899         switch (sdata->vif.type) {
2900         case NL80211_IFTYPE_AP:
2901                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2902                                               NULL);
2903                 kfree(sdata->u.ap.next_beacon);
2904                 sdata->u.ap.next_beacon = NULL;
2905
2906                 if (err < 0)
2907                         return err;
2908                 *changed |= err;
2909                 break;
2910         case NL80211_IFTYPE_ADHOC:
2911                 err = ieee80211_ibss_finish_csa(sdata);
2912                 if (err < 0)
2913                         return err;
2914                 *changed |= err;
2915                 break;
2916 #ifdef CONFIG_MAC80211_MESH
2917         case NL80211_IFTYPE_MESH_POINT:
2918                 err = ieee80211_mesh_finish_csa(sdata);
2919                 if (err < 0)
2920                         return err;
2921                 *changed |= err;
2922                 break;
2923 #endif
2924         default:
2925                 WARN_ON(1);
2926                 return -EINVAL;
2927         }
2928
2929         return 0;
2930 }
2931
2932 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2933 {
2934         struct ieee80211_local *local = sdata->local;
2935         u32 changed = 0;
2936         int err;
2937
2938         sdata_assert_lock(sdata);
2939         lockdep_assert_held(&local->mtx);
2940         lockdep_assert_held(&local->chanctx_mtx);
2941
2942         /*
2943          * using reservation isn't immediate as it may be deferred until later
2944          * with multi-vif. once reservation is complete it will re-schedule the
2945          * work with no reserved_chanctx so verify chandef to check if it
2946          * completed successfully
2947          */
2948
2949         if (sdata->reserved_chanctx) {
2950                 /*
2951                  * with multi-vif csa driver may call ieee80211_csa_finish()
2952                  * many times while waiting for other interfaces to use their
2953                  * reservations
2954                  */
2955                 if (sdata->reserved_ready)
2956                         return 0;
2957
2958                 return ieee80211_vif_use_reserved_context(sdata);
2959         }
2960
2961         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2962                                         &sdata->csa_chandef))
2963                 return -EINVAL;
2964
2965         sdata->vif.csa_active = false;
2966
2967         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2968         if (err)
2969                 return err;
2970
2971         ieee80211_bss_info_change_notify(sdata, changed);
2972
2973         if (sdata->csa_block_tx) {
2974                 ieee80211_wake_vif_queues(local, sdata,
2975                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2976                 sdata->csa_block_tx = false;
2977         }
2978
2979         err = drv_post_channel_switch(sdata);
2980         if (err)
2981                 return err;
2982
2983         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2984
2985         return 0;
2986 }
2987
2988 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2989 {
2990         if (__ieee80211_csa_finalize(sdata)) {
2991                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2992                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2993                                     GFP_KERNEL);
2994         }
2995 }
2996
2997 void ieee80211_csa_finalize_work(struct work_struct *work)
2998 {
2999         struct ieee80211_sub_if_data *sdata =
3000                 container_of(work, struct ieee80211_sub_if_data,
3001                              csa_finalize_work);
3002         struct ieee80211_local *local = sdata->local;
3003
3004         sdata_lock(sdata);
3005         mutex_lock(&local->mtx);
3006         mutex_lock(&local->chanctx_mtx);
3007
3008         /* AP might have been stopped while waiting for the lock. */
3009         if (!sdata->vif.csa_active)
3010                 goto unlock;
3011
3012         if (!ieee80211_sdata_running(sdata))
3013                 goto unlock;
3014
3015         ieee80211_csa_finalize(sdata);
3016
3017 unlock:
3018         mutex_unlock(&local->chanctx_mtx);
3019         mutex_unlock(&local->mtx);
3020         sdata_unlock(sdata);
3021 }
3022
3023 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3024                                     struct cfg80211_csa_settings *params,
3025                                     u32 *changed)
3026 {
3027         struct ieee80211_csa_settings csa = {};
3028         int err;
3029
3030         switch (sdata->vif.type) {
3031         case NL80211_IFTYPE_AP:
3032                 sdata->u.ap.next_beacon =
3033                         cfg80211_beacon_dup(&params->beacon_after);
3034                 if (!sdata->u.ap.next_beacon)
3035                         return -ENOMEM;
3036
3037                 /*
3038                  * With a count of 0, we don't have to wait for any
3039                  * TBTT before switching, so complete the CSA
3040                  * immediately.  In theory, with a count == 1 we
3041                  * should delay the switch until just before the next
3042                  * TBTT, but that would complicate things so we switch
3043                  * immediately too.  If we would delay the switch
3044                  * until the next TBTT, we would have to set the probe
3045                  * response here.
3046                  *
3047                  * TODO: A channel switch with count <= 1 without
3048                  * sending a CSA action frame is kind of useless,
3049                  * because the clients won't know we're changing
3050                  * channels.  The action frame must be implemented
3051                  * either here or in the userspace.
3052                  */
3053                 if (params->count <= 1)
3054                         break;
3055
3056                 if ((params->n_counter_offsets_beacon >
3057                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3058                     (params->n_counter_offsets_presp >
3059                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3060                         return -EINVAL;
3061
3062                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3063                 csa.counter_offsets_presp = params->counter_offsets_presp;
3064                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3065                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3066                 csa.count = params->count;
3067
3068                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3069                 if (err < 0) {
3070                         kfree(sdata->u.ap.next_beacon);
3071                         return err;
3072                 }
3073                 *changed |= err;
3074
3075                 break;
3076         case NL80211_IFTYPE_ADHOC:
3077                 if (!sdata->vif.bss_conf.ibss_joined)
3078                         return -EINVAL;
3079
3080                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3081                         return -EINVAL;
3082
3083                 switch (params->chandef.width) {
3084                 case NL80211_CHAN_WIDTH_40:
3085                         if (cfg80211_get_chandef_type(&params->chandef) !=
3086                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3087                                 return -EINVAL;
3088                 case NL80211_CHAN_WIDTH_5:
3089                 case NL80211_CHAN_WIDTH_10:
3090                 case NL80211_CHAN_WIDTH_20_NOHT:
3091                 case NL80211_CHAN_WIDTH_20:
3092                         break;
3093                 default:
3094                         return -EINVAL;
3095                 }
3096
3097                 /* changes into another band are not supported */
3098                 if (sdata->u.ibss.chandef.chan->band !=
3099                     params->chandef.chan->band)
3100                         return -EINVAL;
3101
3102                 /* see comments in the NL80211_IFTYPE_AP block */
3103                 if (params->count > 1) {
3104                         err = ieee80211_ibss_csa_beacon(sdata, params);
3105                         if (err < 0)
3106                                 return err;
3107                         *changed |= err;
3108                 }
3109
3110                 ieee80211_send_action_csa(sdata, params);
3111
3112                 break;
3113 #ifdef CONFIG_MAC80211_MESH
3114         case NL80211_IFTYPE_MESH_POINT: {
3115                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3116
3117                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3118                         return -EINVAL;
3119
3120                 /* changes into another band are not supported */
3121                 if (sdata->vif.bss_conf.chandef.chan->band !=
3122                     params->chandef.chan->band)
3123                         return -EINVAL;
3124
3125                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3126                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3127                         if (!ifmsh->pre_value)
3128                                 ifmsh->pre_value = 1;
3129                         else
3130                                 ifmsh->pre_value++;
3131                 }
3132
3133                 /* see comments in the NL80211_IFTYPE_AP block */
3134                 if (params->count > 1) {
3135                         err = ieee80211_mesh_csa_beacon(sdata, params);
3136                         if (err < 0) {
3137                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3138                                 return err;
3139                         }
3140                         *changed |= err;
3141                 }
3142
3143                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3144                         ieee80211_send_action_csa(sdata, params);
3145
3146                 break;
3147                 }
3148 #endif
3149         default:
3150                 return -EOPNOTSUPP;
3151         }
3152
3153         return 0;
3154 }
3155
3156 static int
3157 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3158                            struct cfg80211_csa_settings *params)
3159 {
3160         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3161         struct ieee80211_local *local = sdata->local;
3162         struct ieee80211_channel_switch ch_switch;
3163         struct ieee80211_chanctx_conf *conf;
3164         struct ieee80211_chanctx *chanctx;
3165         u32 changed = 0;
3166         int err;
3167
3168         sdata_assert_lock(sdata);
3169         lockdep_assert_held(&local->mtx);
3170
3171         if (!list_empty(&local->roc_list) || local->scanning)
3172                 return -EBUSY;
3173
3174         if (sdata->wdev.cac_started)
3175                 return -EBUSY;
3176
3177         if (cfg80211_chandef_identical(&params->chandef,
3178                                        &sdata->vif.bss_conf.chandef))
3179                 return -EINVAL;
3180
3181         /* don't allow another channel switch if one is already active. */
3182         if (sdata->vif.csa_active)
3183                 return -EBUSY;
3184
3185         mutex_lock(&local->chanctx_mtx);
3186         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3187                                          lockdep_is_held(&local->chanctx_mtx));
3188         if (!conf) {
3189                 err = -EBUSY;
3190                 goto out;
3191         }
3192
3193         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3194
3195         ch_switch.timestamp = 0;
3196         ch_switch.device_timestamp = 0;
3197         ch_switch.block_tx = params->block_tx;
3198         ch_switch.chandef = params->chandef;
3199         ch_switch.count = params->count;
3200
3201         err = drv_pre_channel_switch(sdata, &ch_switch);
3202         if (err)
3203                 goto out;
3204
3205         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3206                                             chanctx->mode,
3207                                             params->radar_required);
3208         if (err)
3209                 goto out;
3210
3211         /* if reservation is invalid then this will fail */
3212         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3213         if (err) {
3214                 ieee80211_vif_unreserve_chanctx(sdata);
3215                 goto out;
3216         }
3217
3218         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3219         if (err) {
3220                 ieee80211_vif_unreserve_chanctx(sdata);
3221                 goto out;
3222         }
3223
3224         sdata->csa_chandef = params->chandef;
3225         sdata->csa_block_tx = params->block_tx;
3226         sdata->vif.csa_active = true;
3227
3228         if (sdata->csa_block_tx)
3229                 ieee80211_stop_vif_queues(local, sdata,
3230                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3231
3232         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3233                                           params->count);
3234
3235         if (changed) {
3236                 ieee80211_bss_info_change_notify(sdata, changed);
3237                 drv_channel_switch_beacon(sdata, &params->chandef);
3238         } else {
3239                 /* if the beacon didn't change, we can finalize immediately */
3240                 ieee80211_csa_finalize(sdata);
3241         }
3242
3243 out:
3244         mutex_unlock(&local->chanctx_mtx);
3245         return err;
3246 }
3247
3248 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3249                              struct cfg80211_csa_settings *params)
3250 {
3251         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3252         struct ieee80211_local *local = sdata->local;
3253         int err;
3254
3255         mutex_lock(&local->mtx);
3256         err = __ieee80211_channel_switch(wiphy, dev, params);
3257         mutex_unlock(&local->mtx);
3258
3259         return err;
3260 }
3261
3262 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3263 {
3264         lockdep_assert_held(&local->mtx);
3265
3266         local->roc_cookie_counter++;
3267
3268         /* wow, you wrapped 64 bits ... more likely a bug */
3269         if (WARN_ON(local->roc_cookie_counter == 0))
3270                 local->roc_cookie_counter++;
3271
3272         return local->roc_cookie_counter;
3273 }
3274
3275 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3276                              u64 *cookie, gfp_t gfp)
3277 {
3278         unsigned long spin_flags;
3279         struct sk_buff *ack_skb;
3280         int id;
3281
3282         ack_skb = skb_copy(skb, gfp);
3283         if (!ack_skb)
3284                 return -ENOMEM;
3285
3286         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3287         id = idr_alloc(&local->ack_status_frames, ack_skb,
3288                        1, 0x10000, GFP_ATOMIC);
3289         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3290
3291         if (id < 0) {
3292                 kfree_skb(ack_skb);
3293                 return -ENOMEM;
3294         }
3295
3296         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3297
3298         *cookie = ieee80211_mgmt_tx_cookie(local);
3299         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3300
3301         return 0;
3302 }
3303
3304 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3305                                           struct wireless_dev *wdev,
3306                                           u16 frame_type, bool reg)
3307 {
3308         struct ieee80211_local *local = wiphy_priv(wiphy);
3309         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3310
3311         switch (frame_type) {
3312         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3313                 if (reg) {
3314                         local->probe_req_reg++;
3315                         sdata->vif.probe_req_reg++;
3316                 } else {
3317                         if (local->probe_req_reg)
3318                                 local->probe_req_reg--;
3319
3320                         if (sdata->vif.probe_req_reg)
3321                                 sdata->vif.probe_req_reg--;
3322                 }
3323
3324                 if (!local->open_count)
3325                         break;
3326
3327                 if (sdata->vif.probe_req_reg == 1)
3328                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3329                                                 FIF_PROBE_REQ);
3330                 else if (sdata->vif.probe_req_reg == 0)
3331                         drv_config_iface_filter(local, sdata, 0,
3332                                                 FIF_PROBE_REQ);
3333
3334                 ieee80211_configure_filter(local);
3335                 break;
3336         default:
3337                 break;
3338         }
3339 }
3340
3341 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3342 {
3343         struct ieee80211_local *local = wiphy_priv(wiphy);
3344
3345         if (local->started)
3346                 return -EOPNOTSUPP;
3347
3348         return drv_set_antenna(local, tx_ant, rx_ant);
3349 }
3350
3351 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3352 {
3353         struct ieee80211_local *local = wiphy_priv(wiphy);
3354
3355         return drv_get_antenna(local, tx_ant, rx_ant);
3356 }
3357
3358 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3359                                     struct net_device *dev,
3360                                     struct cfg80211_gtk_rekey_data *data)
3361 {
3362         struct ieee80211_local *local = wiphy_priv(wiphy);
3363         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3364
3365         if (!local->ops->set_rekey_data)
3366                 return -EOPNOTSUPP;
3367
3368         drv_set_rekey_data(local, sdata, data);
3369
3370         return 0;
3371 }
3372
3373 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3374                                   const u8 *peer, u64 *cookie)
3375 {
3376         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3377         struct ieee80211_local *local = sdata->local;
3378         struct ieee80211_qos_hdr *nullfunc;
3379         struct sk_buff *skb;
3380         int size = sizeof(*nullfunc);
3381         __le16 fc;
3382         bool qos;
3383         struct ieee80211_tx_info *info;
3384         struct sta_info *sta;
3385         struct ieee80211_chanctx_conf *chanctx_conf;
3386         enum nl80211_band band;
3387         int ret;
3388
3389         /* the lock is needed to assign the cookie later */
3390         mutex_lock(&local->mtx);
3391
3392         rcu_read_lock();
3393         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3394         if (WARN_ON(!chanctx_conf)) {
3395                 ret = -EINVAL;
3396                 goto unlock;
3397         }
3398         band = chanctx_conf->def.chan->band;
3399         sta = sta_info_get_bss(sdata, peer);
3400         if (sta) {
3401                 qos = sta->sta.wme;
3402         } else {
3403                 ret = -ENOLINK;
3404                 goto unlock;
3405         }
3406
3407         if (qos) {
3408                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3409                                  IEEE80211_STYPE_QOS_NULLFUNC |
3410                                  IEEE80211_FCTL_FROMDS);
3411         } else {
3412                 size -= 2;
3413                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3414                                  IEEE80211_STYPE_NULLFUNC |
3415                                  IEEE80211_FCTL_FROMDS);
3416         }
3417
3418         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3419         if (!skb) {
3420                 ret = -ENOMEM;
3421                 goto unlock;
3422         }
3423
3424         skb->dev = dev;
3425
3426         skb_reserve(skb, local->hw.extra_tx_headroom);
3427
3428         nullfunc = skb_put(skb, size);
3429         nullfunc->frame_control = fc;
3430         nullfunc->duration_id = 0;
3431         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3432         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3433         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3434         nullfunc->seq_ctrl = 0;
3435
3436         info = IEEE80211_SKB_CB(skb);
3437
3438         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3439                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3440         info->band = band;
3441
3442         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3443         skb->priority = 7;
3444         if (qos)
3445                 nullfunc->qos_ctrl = cpu_to_le16(7);
3446
3447         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3448         if (ret) {
3449                 kfree_skb(skb);
3450                 goto unlock;
3451         }
3452
3453         local_bh_disable();
3454         ieee80211_xmit(sdata, sta, skb);
3455         local_bh_enable();
3456
3457         ret = 0;
3458 unlock:
3459         rcu_read_unlock();
3460         mutex_unlock(&local->mtx);
3461
3462         return ret;
3463 }
3464
3465 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3466                                      struct wireless_dev *wdev,
3467                                      struct cfg80211_chan_def *chandef)
3468 {
3469         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3470         struct ieee80211_local *local = wiphy_priv(wiphy);
3471         struct ieee80211_chanctx_conf *chanctx_conf;
3472         int ret = -ENODATA;
3473
3474         rcu_read_lock();
3475         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3476         if (chanctx_conf) {
3477                 *chandef = sdata->vif.bss_conf.chandef;
3478                 ret = 0;
3479         } else if (local->open_count > 0 &&
3480                    local->open_count == local->monitors &&
3481                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3482                 if (local->use_chanctx)
3483                         *chandef = local->monitor_chandef;
3484                 else
3485                         *chandef = local->_oper_chandef;
3486                 ret = 0;
3487         }
3488         rcu_read_unlock();
3489
3490         return ret;
3491 }
3492
3493 #ifdef CONFIG_PM
3494 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3495 {
3496         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3497 }
3498 #endif
3499
3500 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3501                                  struct net_device *dev,
3502                                  struct cfg80211_qos_map *qos_map)
3503 {
3504         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3505         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3506
3507         if (qos_map) {
3508                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3509                 if (!new_qos_map)
3510                         return -ENOMEM;
3511                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3512         } else {
3513                 /* A NULL qos_map was passed to disable QoS mapping */
3514                 new_qos_map = NULL;
3515         }
3516
3517         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3518         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3519         if (old_qos_map)
3520                 kfree_rcu(old_qos_map, rcu_head);
3521
3522         return 0;
3523 }
3524
3525 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3526                                       struct net_device *dev,
3527                                       struct cfg80211_chan_def *chandef)
3528 {
3529         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3530         int ret;
3531         u32 changed = 0;
3532
3533         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3534         if (ret == 0)
3535                 ieee80211_bss_info_change_notify(sdata, changed);
3536
3537         return ret;
3538 }
3539
3540 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3541                                u8 tsid, const u8 *peer, u8 up,
3542                                u16 admitted_time)
3543 {
3544         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3545         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3546         int ac = ieee802_1d_to_ac[up];
3547
3548         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3549                 return -EOPNOTSUPP;
3550
3551         if (!(sdata->wmm_acm & BIT(up)))
3552                 return -EINVAL;
3553
3554         if (ifmgd->tx_tspec[ac].admitted_time)
3555                 return -EBUSY;
3556
3557         if (admitted_time) {
3558                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3559                 ifmgd->tx_tspec[ac].tsid = tsid;
3560                 ifmgd->tx_tspec[ac].up = up;
3561         }
3562
3563         return 0;
3564 }
3565
3566 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3567                                u8 tsid, const u8 *peer)
3568 {
3569         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3570         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3571         struct ieee80211_local *local = wiphy_priv(wiphy);
3572         int ac;
3573
3574         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3575                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3576
3577                 /* skip unused entries */
3578                 if (!tx_tspec->admitted_time)
3579                         continue;
3580
3581                 if (tx_tspec->tsid != tsid)
3582                         continue;
3583
3584                 /* due to this new packets will be reassigned to non-ACM ACs */
3585                 tx_tspec->up = -1;
3586
3587                 /* Make sure that all packets have been sent to avoid to
3588                  * restore the QoS params on packets that are still on the
3589                  * queues.
3590                  */
3591                 synchronize_net();
3592                 ieee80211_flush_queues(local, sdata, false);
3593
3594                 /* restore the normal QoS parameters
3595                  * (unconditionally to avoid races)
3596                  */
3597                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3598                 tx_tspec->downgraded = false;
3599                 ieee80211_sta_handle_tspec_ac_params(sdata);
3600
3601                 /* finally clear all the data */
3602                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3603
3604                 return 0;
3605         }
3606
3607         return -ENOENT;
3608 }
3609
3610 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3611                                    u8 inst_id,
3612                                    enum nl80211_nan_func_term_reason reason,
3613                                    gfp_t gfp)
3614 {
3615         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3616         struct cfg80211_nan_func *func;
3617         u64 cookie;
3618
3619         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3620                 return;
3621
3622         spin_lock_bh(&sdata->u.nan.func_lock);
3623
3624         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3625         if (WARN_ON(!func)) {
3626                 spin_unlock_bh(&sdata->u.nan.func_lock);
3627                 return;
3628         }
3629
3630         cookie = func->cookie;
3631         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3632
3633         spin_unlock_bh(&sdata->u.nan.func_lock);
3634
3635         cfg80211_free_nan_func(func);
3636
3637         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3638                                      reason, cookie, gfp);
3639 }
3640 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3641
3642 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3643                               struct cfg80211_nan_match_params *match,
3644                               gfp_t gfp)
3645 {
3646         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3647         struct cfg80211_nan_func *func;
3648
3649         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3650                 return;
3651
3652         spin_lock_bh(&sdata->u.nan.func_lock);
3653
3654         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3655         if (WARN_ON(!func)) {
3656                 spin_unlock_bh(&sdata->u.nan.func_lock);
3657                 return;
3658         }
3659         match->cookie = func->cookie;
3660
3661         spin_unlock_bh(&sdata->u.nan.func_lock);
3662
3663         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3664 }
3665 EXPORT_SYMBOL(ieee80211_nan_func_match);
3666
3667 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3668                                               struct net_device *dev,
3669                                               const bool enabled)
3670 {
3671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3672
3673         sdata->u.ap.multicast_to_unicast = enabled;
3674
3675         return 0;
3676 }
3677
3678 const struct cfg80211_ops mac80211_config_ops = {
3679         .add_virtual_intf = ieee80211_add_iface,
3680         .del_virtual_intf = ieee80211_del_iface,
3681         .change_virtual_intf = ieee80211_change_iface,
3682         .start_p2p_device = ieee80211_start_p2p_device,
3683         .stop_p2p_device = ieee80211_stop_p2p_device,
3684         .add_key = ieee80211_add_key,
3685         .del_key = ieee80211_del_key,
3686         .get_key = ieee80211_get_key,
3687         .set_default_key = ieee80211_config_default_key,
3688         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3689         .start_ap = ieee80211_start_ap,
3690         .change_beacon = ieee80211_change_beacon,
3691         .stop_ap = ieee80211_stop_ap,
3692         .add_station = ieee80211_add_station,
3693         .del_station = ieee80211_del_station,
3694         .change_station = ieee80211_change_station,
3695         .get_station = ieee80211_get_station,
3696         .dump_station = ieee80211_dump_station,
3697         .dump_survey = ieee80211_dump_survey,
3698 #ifdef CONFIG_MAC80211_MESH
3699         .add_mpath = ieee80211_add_mpath,
3700         .del_mpath = ieee80211_del_mpath,
3701         .change_mpath = ieee80211_change_mpath,
3702         .get_mpath = ieee80211_get_mpath,
3703         .dump_mpath = ieee80211_dump_mpath,
3704         .get_mpp = ieee80211_get_mpp,
3705         .dump_mpp = ieee80211_dump_mpp,
3706         .update_mesh_config = ieee80211_update_mesh_config,
3707         .get_mesh_config = ieee80211_get_mesh_config,
3708         .join_mesh = ieee80211_join_mesh,
3709         .leave_mesh = ieee80211_leave_mesh,
3710 #endif
3711         .join_ocb = ieee80211_join_ocb,
3712         .leave_ocb = ieee80211_leave_ocb,
3713         .change_bss = ieee80211_change_bss,
3714         .set_txq_params = ieee80211_set_txq_params,
3715         .set_monitor_channel = ieee80211_set_monitor_channel,
3716         .suspend = ieee80211_suspend,
3717         .resume = ieee80211_resume,
3718         .scan = ieee80211_scan,
3719         .abort_scan = ieee80211_abort_scan,
3720         .sched_scan_start = ieee80211_sched_scan_start,
3721         .sched_scan_stop = ieee80211_sched_scan_stop,
3722         .auth = ieee80211_auth,
3723         .assoc = ieee80211_assoc,
3724         .deauth = ieee80211_deauth,
3725         .disassoc = ieee80211_disassoc,
3726         .join_ibss = ieee80211_join_ibss,
3727         .leave_ibss = ieee80211_leave_ibss,
3728         .set_mcast_rate = ieee80211_set_mcast_rate,
3729         .set_wiphy_params = ieee80211_set_wiphy_params,
3730         .set_tx_power = ieee80211_set_tx_power,
3731         .get_tx_power = ieee80211_get_tx_power,
3732         .set_wds_peer = ieee80211_set_wds_peer,
3733         .rfkill_poll = ieee80211_rfkill_poll,
3734         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3735         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3736         .set_power_mgmt = ieee80211_set_power_mgmt,
3737         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3738         .remain_on_channel = ieee80211_remain_on_channel,
3739         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3740         .mgmt_tx = ieee80211_mgmt_tx,
3741         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3742         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3743         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3744         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3745         .set_antenna = ieee80211_set_antenna,
3746         .get_antenna = ieee80211_get_antenna,
3747         .set_rekey_data = ieee80211_set_rekey_data,
3748         .tdls_oper = ieee80211_tdls_oper,
3749         .tdls_mgmt = ieee80211_tdls_mgmt,
3750         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3751         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3752         .probe_client = ieee80211_probe_client,
3753         .set_noack_map = ieee80211_set_noack_map,
3754 #ifdef CONFIG_PM
3755         .set_wakeup = ieee80211_set_wakeup,
3756 #endif
3757         .get_channel = ieee80211_cfg_get_channel,
3758         .start_radar_detection = ieee80211_start_radar_detection,
3759         .end_cac = ieee80211_end_cac,
3760         .channel_switch = ieee80211_channel_switch,
3761         .set_qos_map = ieee80211_set_qos_map,
3762         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3763         .add_tx_ts = ieee80211_add_tx_ts,
3764         .del_tx_ts = ieee80211_del_tx_ts,
3765         .start_nan = ieee80211_start_nan,
3766         .stop_nan = ieee80211_stop_nan,
3767         .nan_change_conf = ieee80211_nan_change_conf,
3768         .add_nan_func = ieee80211_add_nan_func,
3769         .del_nan_func = ieee80211_del_nan_func,
3770         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3771 };