net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  *
   8  * This file is GPLv2 as found in COPYING.
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/if_ether.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "driver-ops.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  26                                          struct vif_params *params)
  27 {
  28         bool mu_mimo_groups = false;
  29         bool mu_mimo_follow = false;
  30
  31         if (params->vht_mumimo_groups) {
  32                 u64 membership;
  33
  34                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  35
  36                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  37                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  38                 memcpy(sdata->vif.bss_conf.mu_group.position,
  39                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  40                        WLAN_USER_POSITION_LEN);
  41                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  42                 /* don't care about endianness - just check for 0 */
  43                 memcpy(&membership, params->vht_mumimo_groups,
  44                        WLAN_MEMBERSHIP_LEN);
  45                 mu_mimo_groups = membership != 0;
  46         }
  47
  48         if (params->vht_mumimo_follow_addr) {
  49                 mu_mimo_follow =
  50                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  51                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  52                                 params->vht_mumimo_follow_addr);
  53         }
  54
  55         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  56 }
  57
  58 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  59                                      struct vif_params *params)
  60 {
  61         struct ieee80211_local *local = sdata->local;
  62         struct ieee80211_sub_if_data *monitor_sdata;
  63
  64         /* check flags first */
  65         if (params->flags && ieee80211_sdata_running(sdata)) {
  66                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  67
  68                 /*
  69                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  70                  * MONITOR_FLAG_ACTIVE to be changed while the
  71                  * interface is up.
  72                  * Else we would need to add a lot of cruft
  73                  * to update everything:
  74                  *      cooked_mntrs, monitor and all fif_* counters
  75                  *      reconfigure hardware
  76                  */
  77                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  78                         return -EBUSY;
  79         }
  80
  81         /* also validate MU-MIMO change */
  82         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83
  84         if (!monitor_sdata &&
  85             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  86                 return -EOPNOTSUPP;
  87
  88         /* apply all changes now - no failures allowed */
  89
  90         if (monitor_sdata)
  91                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  92
  93         if (params->flags) {
  94                 if (ieee80211_sdata_running(sdata)) {
  95                         ieee80211_adjust_monitor_flags(sdata, -1);
  96                         sdata->u.mntr.flags = params->flags;
  97                         ieee80211_adjust_monitor_flags(sdata, 1);
  98
  99                         ieee80211_configure_filter(local);
 100                 } else {
 101                         /*
 102                          * Because the interface is down, ieee80211_do_stop
 103                          * and ieee80211_do_open take care of "everything"
 104                          * mentioned in the comment above.
 105                          */
 106                         sdata->u.mntr.flags = params->flags;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 114                                                 const char *name,
 115                                                 unsigned char name_assign_type,
 116                                                 enum nl80211_iftype type,
 117                                                 struct vif_params *params)
 118 {
 119         struct ieee80211_local *local = wiphy_priv(wiphy);
 120         struct wireless_dev *wdev;
 121         struct ieee80211_sub_if_data *sdata;
 122         int err;
 123
 124         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 125         if (err)
 126                 return ERR_PTR(err);
 127
 128         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 129
 130         if (type == NL80211_IFTYPE_MONITOR) {
 131                 err = ieee80211_set_mon_options(sdata, params);
 132                 if (err) {
 133                         ieee80211_if_remove(sdata);
 134                         return NULL;
 135                 }
 136         }
 137
 138         return wdev;
 139 }
 140
 141 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 142 {
 143         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 144
 145         return 0;
 146 }
 147
 148 static int ieee80211_change_iface(struct wiphy *wiphy,
 149                                   struct net_device *dev,
 150                                   enum nl80211_iftype type,
 151                                   struct vif_params *params)
 152 {
 153         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 154         int ret;
 155
 156         ret = ieee80211_if_change_type(sdata, type);
 157         if (ret)
 158                 return ret;
 159
 160         if (type == NL80211_IFTYPE_AP_VLAN &&
 161             params && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION &&
 165                    params && params->use_4addr >= 0) {
 166                 sdata->u.mgd.use_4addr = params->use_4addr;
 167         }
 168
 169         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 170                 ret = ieee80211_set_mon_options(sdata, params);
 171                 if (ret)
 172                         return ret;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 179                                       struct wireless_dev *wdev)
 180 {
 181         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 182         int ret;
 183
 184         mutex_lock(&sdata->local->chanctx_mtx);
 185         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 186         mutex_unlock(&sdata->local->chanctx_mtx);
 187         if (ret < 0)
 188                 return ret;
 189
 190         return ieee80211_do_open(wdev, true);
 191 }
 192
 193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 194                                       struct wireless_dev *wdev)
 195 {
 196         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 197 }
 198
 199 static int ieee80211_start_nan(struct wiphy *wiphy,
 200                                struct wireless_dev *wdev,
 201                                struct cfg80211_nan_conf *conf)
 202 {
 203         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 204         int ret;
 205
 206         mutex_lock(&sdata->local->chanctx_mtx);
 207         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 208         mutex_unlock(&sdata->local->chanctx_mtx);
 209         if (ret < 0)
 210                 return ret;
 211
 212         ret = ieee80211_do_open(wdev, true);
 213         if (ret)
 214                 return ret;
 215
 216         ret = drv_start_nan(sdata->local, sdata, conf);
 217         if (ret)
 218                 ieee80211_sdata_stop(sdata);
 219
 220         sdata->u.nan.conf = *conf;
 221
 222         return ret;
 223 }
 224
 225 static void ieee80211_stop_nan(struct wiphy *wiphy,
 226                                struct wireless_dev *wdev)
 227 {
 228         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 229
 230         drv_stop_nan(sdata->local, sdata);
 231         ieee80211_sdata_stop(sdata);
 232 }
 233
 234 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 235                                      struct wireless_dev *wdev,
 236                                      struct cfg80211_nan_conf *conf,
 237                                      u32 changes)
 238 {
 239         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 240         struct cfg80211_nan_conf new_conf;
 241         int ret = 0;
 242
 243         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 244                 return -EOPNOTSUPP;
 245
 246         if (!ieee80211_sdata_running(sdata))
 247                 return -ENETDOWN;
 248
 249         new_conf = sdata->u.nan.conf;
 250
 251         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 252                 new_conf.master_pref = conf->master_pref;
 253
 254         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 255                 new_conf.bands = conf->bands;
 256
 257         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 258         if (!ret)
 259                 sdata->u.nan.conf = new_conf;
 260
 261         return ret;
 262 }
 263
 264 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 265                                   struct wireless_dev *wdev,
 266                                   struct cfg80211_nan_func *nan_func)
 267 {
 268         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 269         int ret;
 270
 271         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 272                 return -EOPNOTSUPP;
 273
 274         if (!ieee80211_sdata_running(sdata))
 275                 return -ENETDOWN;
 276
 277         spin_lock_bh(&sdata->u.nan.func_lock);
 278
 279         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 280                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 281                         GFP_ATOMIC);
 282         spin_unlock_bh(&sdata->u.nan.func_lock);
 283
 284         if (ret < 0)
 285                 return ret;
 286
 287         nan_func->instance_id = ret;
 288
 289         WARN_ON(nan_func->instance_id == 0);
 290
 291         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 292         if (ret) {
 293                 spin_lock_bh(&sdata->u.nan.func_lock);
 294                 idr_remove(&sdata->u.nan.function_inst_ids,
 295                            nan_func->instance_id);
 296                 spin_unlock_bh(&sdata->u.nan.func_lock);
 297         }
 298
 299         return ret;
 300 }
 301
 302 static struct cfg80211_nan_func *
 303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 304                                   u64 cookie)
 305 {
 306         struct cfg80211_nan_func *func;
 307         int id;
 308
 309         lockdep_assert_held(&sdata->u.nan.func_lock);
 310
 311         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 312                 if (func->cookie == cookie)
 313                         return func;
 314         }
 315
 316         return NULL;
 317 }
 318
 319 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 320                                   struct wireless_dev *wdev, u64 cookie)
 321 {
 322         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 323         struct cfg80211_nan_func *func;
 324         u8 instance_id = 0;
 325
 326         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 327             !ieee80211_sdata_running(sdata))
 328                 return;
 329
 330         spin_lock_bh(&sdata->u.nan.func_lock);
 331
 332         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 333         if (func)
 334                 instance_id = func->instance_id;
 335
 336         spin_unlock_bh(&sdata->u.nan.func_lock);
 337
 338         if (instance_id)
 339                 drv_del_nan_func(sdata->local, sdata, instance_id);
 340 }
 341
 342 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 343                                   struct net_device *dev,
 344                                   u16 noack_map)
 345 {
 346         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 347
 348         sdata->noack_map = noack_map;
 349
 350         ieee80211_check_fast_xmit_iface(sdata);
 351
 352         return 0;
 353 }
 354
 355 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 356                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 357                              struct key_params *params)
 358 {
 359         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 360         struct ieee80211_local *local = sdata->local;
 361         struct sta_info *sta = NULL;
 362         const struct ieee80211_cipher_scheme *cs = NULL;
 363         struct ieee80211_key *key;
 364         int err;
 365
 366         if (!ieee80211_sdata_running(sdata))
 367                 return -ENETDOWN;
 368
 369         /* reject WEP and TKIP keys if WEP failed to initialize */
 370         switch (params->cipher) {
 371         case WLAN_CIPHER_SUITE_WEP40:
 372         case WLAN_CIPHER_SUITE_TKIP:
 373         case WLAN_CIPHER_SUITE_WEP104:
 374                 if (IS_ERR(local->wep_tx_tfm))
 375                         return -EINVAL;
 376                 break;
 377         case WLAN_CIPHER_SUITE_CCMP:
 378         case WLAN_CIPHER_SUITE_CCMP_256:
 379         case WLAN_CIPHER_SUITE_AES_CMAC:
 380         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 383         case WLAN_CIPHER_SUITE_GCMP:
 384         case WLAN_CIPHER_SUITE_GCMP_256:
 385                 break;
 386         default:
 387                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 388                 break;
 389         }
 390
 391         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 392                                   params->key, params->seq_len, params->seq,
 393                                   cs);
 394         if (IS_ERR(key))
 395                 return PTR_ERR(key);
 396
 397         if (pairwise)
 398                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 399
 400         mutex_lock(&local->sta_mtx);
 401
 402         if (mac_addr) {
 403                 sta = sta_info_get_bss(sdata, mac_addr);
 404                 /*
 405                  * The ASSOC test makes sure the driver is ready to
 406                  * receive the key. When wpa_supplicant has roamed
 407                  * using FT, it attempts to set the key before
 408                  * association has completed, this rejects that attempt
 409                  * so it will set the key again after association.
 410                  *
 411                  * TODO: accept the key if we have a station entry and
 412                  *       add it to the device after the station.
 413                  */
 414                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 415                         ieee80211_key_free_unused(key);
 416                         err = -ENOENT;
 417                         goto out_unlock;
 418                 }
 419         }
 420
 421         switch (sdata->vif.type) {
 422         case NL80211_IFTYPE_STATION:
 423                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 424                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 425                 break;
 426         case NL80211_IFTYPE_AP:
 427         case NL80211_IFTYPE_AP_VLAN:
 428                 /* Keys without a station are used for TX only */
 429                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 430                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 431                 break;
 432         case NL80211_IFTYPE_ADHOC:
 433                 /* no MFP (yet) */
 434                 break;
 435         case NL80211_IFTYPE_MESH_POINT:
 436 #ifdef CONFIG_MAC80211_MESH
 437                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 438                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 439                 break;
 440 #endif
 441         case NL80211_IFTYPE_WDS:
 442         case NL80211_IFTYPE_MONITOR:
 443         case NL80211_IFTYPE_P2P_DEVICE:
 444         case NL80211_IFTYPE_NAN:
 445         case NL80211_IFTYPE_UNSPECIFIED:
 446         case NUM_NL80211_IFTYPES:
 447         case NL80211_IFTYPE_P2P_CLIENT:
 448         case NL80211_IFTYPE_P2P_GO:
 449         case NL80211_IFTYPE_OCB:
 450                 /* shouldn't happen */
 451                 WARN_ON_ONCE(1);
 452                 break;
 453         }
 454
 455         if (sta)
 456                 sta->cipher_scheme = cs;
 457
 458         err = ieee80211_key_link(key, sdata, sta);
 459
 460  out_unlock:
 461         mutex_unlock(&local->sta_mtx);
 462
 463         return err;
 464 }
 465
 466 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 467                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 468 {
 469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470         struct ieee80211_local *local = sdata->local;
 471         struct sta_info *sta;
 472         struct ieee80211_key *key = NULL;
 473         int ret;
 474
 475         mutex_lock(&local->sta_mtx);
 476         mutex_lock(&local->key_mtx);
 477
 478         if (mac_addr) {
 479                 ret = -ENOENT;
 480
 481                 sta = sta_info_get_bss(sdata, mac_addr);
 482                 if (!sta)
 483                         goto out_unlock;
 484
 485                 if (pairwise)
 486                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 487                 else
 488                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 489         } else
 490                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 491
 492         if (!key) {
 493                 ret = -ENOENT;
 494                 goto out_unlock;
 495         }
 496
 497         ieee80211_key_free(key, true);
 498
 499         ret = 0;
 500  out_unlock:
 501         mutex_unlock(&local->key_mtx);
 502         mutex_unlock(&local->sta_mtx);
 503
 504         return ret;
 505 }
 506
 507 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 508                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 509                              void *cookie,
 510                              void (*callback)(void *cookie,
 511                                               struct key_params *params))
 512 {
 513         struct ieee80211_sub_if_data *sdata;
 514         struct sta_info *sta = NULL;
 515         u8 seq[6] = {0};
 516         struct key_params params;
 517         struct ieee80211_key *key = NULL;
 518         u64 pn64;
 519         u32 iv32;
 520         u16 iv16;
 521         int err = -ENOENT;
 522         struct ieee80211_key_seq kseq = {};
 523
 524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 525
 526         rcu_read_lock();
 527
 528         if (mac_addr) {
 529                 sta = sta_info_get_bss(sdata, mac_addr);
 530                 if (!sta)
 531                         goto out;
 532
 533                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 534                         key = rcu_dereference(sta->ptk[key_idx]);
 535                 else if (!pairwise &&
 536                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 537                         key = rcu_dereference(sta->gtk[key_idx]);
 538         } else
 539                 key = rcu_dereference(sdata->keys[key_idx]);
 540
 541         if (!key)
 542                 goto out;
 543
 544         memset(&params, 0, sizeof(params));
 545
 546         params.cipher = key->conf.cipher;
 547
 548         switch (key->conf.cipher) {
 549         case WLAN_CIPHER_SUITE_TKIP:
 550                 pn64 = atomic64_read(&key->conf.tx_pn);
 551                 iv32 = TKIP_PN_TO_IV32(pn64);
 552                 iv16 = TKIP_PN_TO_IV16(pn64);
 553
 554                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 555                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 556                         drv_get_key_seq(sdata->local, key, &kseq);
 557                         iv32 = kseq.tkip.iv32;
 558                         iv16 = kseq.tkip.iv16;
 559                 }
 560
 561                 seq[0] = iv16 & 0xff;
 562                 seq[1] = (iv16 >> 8) & 0xff;
 563                 seq[2] = iv32 & 0xff;
 564                 seq[3] = (iv32 >> 8) & 0xff;
 565                 seq[4] = (iv32 >> 16) & 0xff;
 566                 seq[5] = (iv32 >> 24) & 0xff;
 567                 params.seq = seq;
 568                 params.seq_len = 6;
 569                 break;
 570         case WLAN_CIPHER_SUITE_CCMP:
 571         case WLAN_CIPHER_SUITE_CCMP_256:
 572         case WLAN_CIPHER_SUITE_AES_CMAC:
 573         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 574                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 575                              offsetof(typeof(kseq), aes_cmac));
 576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 579                              offsetof(typeof(kseq), aes_gmac));
 580         case WLAN_CIPHER_SUITE_GCMP:
 581         case WLAN_CIPHER_SUITE_GCMP_256:
 582                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 583                              offsetof(typeof(kseq), gcmp));
 584
 585                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 586                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 587                         drv_get_key_seq(sdata->local, key, &kseq);
 588                         memcpy(seq, kseq.ccmp.pn, 6);
 589                 } else {
 590                         pn64 = atomic64_read(&key->conf.tx_pn);
 591                         seq[0] = pn64;
 592                         seq[1] = pn64 >> 8;
 593                         seq[2] = pn64 >> 16;
 594                         seq[3] = pn64 >> 24;
 595                         seq[4] = pn64 >> 32;
 596                         seq[5] = pn64 >> 40;
 597                 }
 598                 params.seq = seq;
 599                 params.seq_len = 6;
 600                 break;
 601         default:
 602                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 603                         break;
 604                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 605                         break;
 606                 drv_get_key_seq(sdata->local, key, &kseq);
 607                 params.seq = kseq.hw.seq;
 608                 params.seq_len = kseq.hw.seq_len;
 609                 break;
 610         }
 611
 612         params.key = key->conf.key;
 613         params.key_len = key->conf.keylen;
 614
 615         callback(cookie, &params);
 616         err = 0;
 617
 618  out:
 619         rcu_read_unlock();
 620         return err;
 621 }
 622
 623 static int ieee80211_config_default_key(struct wiphy *wiphy,
 624                                         struct net_device *dev,
 625                                         u8 key_idx, bool uni,
 626                                         bool multi)
 627 {
 628         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 629
 630         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 631
 632         return 0;
 633 }
 634
 635 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 636                                              struct net_device *dev,
 637                                              u8 key_idx)
 638 {
 639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 640
 641         ieee80211_set_default_mgmt_key(sdata, key_idx);
 642
 643         return 0;
 644 }
 645
 646 void sta_set_rate_info_tx(struct sta_info *sta,
 647                           const struct ieee80211_tx_rate *rate,
 648                           struct rate_info *rinfo)
 649 {
 650         rinfo->flags = 0;
 651         if (rate->flags & IEEE80211_TX_RC_MCS) {
 652                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 653                 rinfo->mcs = rate->idx;
 654         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 655                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 656                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 657                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 658         } else {
 659                 struct ieee80211_supported_band *sband;
 660                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 661                 u16 brate;
 662
 663                 sband = ieee80211_get_sband(sta->sdata);
 664                 if (sband) {
 665                         brate = sband->bitrates[rate->idx].bitrate;
 666                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 667                 }
 668         }
 669         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 670                 rinfo->bw = RATE_INFO_BW_40;
 671         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 672                 rinfo->bw = RATE_INFO_BW_80;
 673         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 674                 rinfo->bw = RATE_INFO_BW_160;
 675         else
 676                 rinfo->bw = RATE_INFO_BW_20;
 677         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 678                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 679 }
 680
 681 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 682                                   int idx, u8 *mac, struct station_info *sinfo)
 683 {
 684         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 685         struct ieee80211_local *local = sdata->local;
 686         struct sta_info *sta;
 687         int ret = -ENOENT;
 688
 689         mutex_lock(&local->sta_mtx);
 690
 691         sta = sta_info_get_by_idx(sdata, idx);
 692         if (sta) {
 693                 ret = 0;
 694                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 695                 sta_set_sinfo(sta, sinfo);
 696         }
 697
 698         mutex_unlock(&local->sta_mtx);
 699
 700         return ret;
 701 }
 702
 703 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 704                                  int idx, struct survey_info *survey)
 705 {
 706         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 707
 708         return drv_get_survey(local, idx, survey);
 709 }
 710
 711 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 712                                  const u8 *mac, struct station_info *sinfo)
 713 {
 714         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 715         struct ieee80211_local *local = sdata->local;
 716         struct sta_info *sta;
 717         int ret = -ENOENT;
 718
 719         mutex_lock(&local->sta_mtx);
 720
 721         sta = sta_info_get_bss(sdata, mac);
 722         if (sta) {
 723                 ret = 0;
 724                 sta_set_sinfo(sta, sinfo);
 725         }
 726
 727         mutex_unlock(&local->sta_mtx);
 728
 729         return ret;
 730 }
 731
 732 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 733                                          struct cfg80211_chan_def *chandef)
 734 {
 735         struct ieee80211_local *local = wiphy_priv(wiphy);
 736         struct ieee80211_sub_if_data *sdata;
 737         int ret = 0;
 738
 739         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 740                 return 0;
 741
 742         mutex_lock(&local->mtx);
 743         if (local->use_chanctx) {
 744                 sdata = rtnl_dereference(local->monitor_sdata);
 745                 if (sdata) {
 746                         ieee80211_vif_release_channel(sdata);
 747                         ret = ieee80211_vif_use_channel(sdata, chandef,
 748                                         IEEE80211_CHANCTX_EXCLUSIVE);
 749                 }
 750         } else if (local->open_count == local->monitors) {
 751                 local->_oper_chandef = *chandef;
 752                 ieee80211_hw_config(local, 0);
 753         }
 754
 755         if (ret == 0)
 756                 local->monitor_chandef = *chandef;
 757         mutex_unlock(&local->mtx);
 758
 759         return ret;
 760 }
 761
 762 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 763                                     const u8 *resp, size_t resp_len,
 764                                     const struct ieee80211_csa_settings *csa)
 765 {
 766         struct probe_resp *new, *old;
 767
 768         if (!resp || !resp_len)
 769                 return 1;
 770
 771         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 772
 773         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 774         if (!new)
 775                 return -ENOMEM;
 776
 777         new->len = resp_len;
 778         memcpy(new->data, resp, resp_len);
 779
 780         if (csa)
 781                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 782                        csa->n_counter_offsets_presp *
 783                        sizeof(new->csa_counter_offsets[0]));
 784
 785         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 786         if (old)
 787                 kfree_rcu(old, rcu_head);
 788
 789         return 0;
 790 }
 791
 792 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 793                                    struct cfg80211_beacon_data *params,
 794                                    const struct ieee80211_csa_settings *csa)
 795 {
 796         struct beacon_data *new, *old;
 797         int new_head_len, new_tail_len;
 798         int size, err;
 799         u32 changed = BSS_CHANGED_BEACON;
 800
 801         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 802
 803
 804         /* Need to have a beacon head if we don't have one yet */
 805         if (!params->head && !old)
 806                 return -EINVAL;
 807
 808         /* new or old head? */
 809         if (params->head)
 810                 new_head_len = params->head_len;
 811         else
 812                 new_head_len = old->head_len;
 813
 814         /* new or old tail? */
 815         if (params->tail || !old)
 816                 /* params->tail_len will be zero for !params->tail */
 817                 new_tail_len = params->tail_len;
 818         else
 819                 new_tail_len = old->tail_len;
 820
 821         size = sizeof(*new) + new_head_len + new_tail_len;
 822
 823         new = kzalloc(size, GFP_KERNEL);
 824         if (!new)
 825                 return -ENOMEM;
 826
 827         /* start filling the new info now */
 828
 829         /*
 830          * pointers go into the block we allocated,
 831          * memory is | beacon_data | head | tail |
 832          */
 833         new->head = ((u8 *) new) + sizeof(*new);
 834         new->tail = new->head + new_head_len;
 835         new->head_len = new_head_len;
 836         new->tail_len = new_tail_len;
 837
 838         if (csa) {
 839                 new->csa_current_counter = csa->count;
 840                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 841                        csa->n_counter_offsets_beacon *
 842                        sizeof(new->csa_counter_offsets[0]));
 843         }
 844
 845         /* copy in head */
 846         if (params->head)
 847                 memcpy(new->head, params->head, new_head_len);
 848         else
 849                 memcpy(new->head, old->head, new_head_len);
 850
 851         /* copy in optional tail */
 852         if (params->tail)
 853                 memcpy(new->tail, params->tail, new_tail_len);
 854         else
 855                 if (old)
 856                         memcpy(new->tail, old->tail, new_tail_len);
 857
 858         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 859                                        params->probe_resp_len, csa);
 860         if (err < 0)
 861                 return err;
 862         if (err == 0)
 863                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 864
 865         rcu_assign_pointer(sdata->u.ap.beacon, new);
 866
 867         if (old)
 868                 kfree_rcu(old, rcu_head);
 869
 870         return changed;
 871 }
 872
 873 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 874                               struct cfg80211_ap_settings *params)
 875 {
 876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 877         struct ieee80211_local *local = sdata->local;
 878         struct beacon_data *old;
 879         struct ieee80211_sub_if_data *vlan;
 880         u32 changed = BSS_CHANGED_BEACON_INT |
 881                       BSS_CHANGED_BEACON_ENABLED |
 882                       BSS_CHANGED_BEACON |
 883                       BSS_CHANGED_SSID |
 884                       BSS_CHANGED_P2P_PS |
 885                       BSS_CHANGED_TXPOWER;
 886         int err;
 887
 888         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 889         if (old)
 890                 return -EALREADY;
 891
 892         switch (params->smps_mode) {
 893         case NL80211_SMPS_OFF:
 894                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 895                 break;
 896         case NL80211_SMPS_STATIC:
 897                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 898                 break;
 899         case NL80211_SMPS_DYNAMIC:
 900                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 901                 break;
 902         default:
 903                 return -EINVAL;
 904         }
 905         sdata->u.ap.req_smps = sdata->smps_mode;
 906
 907         sdata->needed_rx_chains = sdata->local->rx_chains;
 908
 909         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 910
 911         mutex_lock(&local->mtx);
 912         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 913                                         IEEE80211_CHANCTX_SHARED);
 914         if (!err)
 915                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 916         mutex_unlock(&local->mtx);
 917         if (err)
 918                 return err;
 919
 920         /*
 921          * Apply control port protocol, this allows us to
 922          * not encrypt dynamic WEP control frames.
 923          */
 924         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 925         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 926         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 927                                                         &params->crypto,
 928                                                         sdata->vif.type);
 929
 930         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 931                 vlan->control_port_protocol =
 932                         params->crypto.control_port_ethertype;
 933                 vlan->control_port_no_encrypt =
 934                         params->crypto.control_port_no_encrypt;
 935                 vlan->encrypt_headroom =
 936                         ieee80211_cs_headroom(sdata->local,
 937                                               &params->crypto,
 938                                               vlan->vif.type);
 939         }
 940
 941         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 942         sdata->vif.bss_conf.enable_beacon = true;
 943         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 944
 945         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 946         if (params->ssid_len)
 947                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 948                        params->ssid_len);
 949         sdata->vif.bss_conf.hidden_ssid =
 950                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 951
 952         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 953                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 954         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 955                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 956         if (params->p2p_opp_ps)
 957                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 958                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 959
 960         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 961         if (err < 0) {
 962                 ieee80211_vif_release_channel(sdata);
 963                 return err;
 964         }
 965         changed |= err;
 966
 967         err = drv_start_ap(sdata->local, sdata);
 968         if (err) {
 969                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 970
 971                 if (old)
 972                         kfree_rcu(old, rcu_head);
 973                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 974                 ieee80211_vif_release_channel(sdata);
 975                 return err;
 976         }
 977
 978         ieee80211_recalc_dtim(local, sdata);
 979         ieee80211_bss_info_change_notify(sdata, changed);
 980
 981         netif_carrier_on(dev);
 982         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 983                 netif_carrier_on(vlan->dev);
 984
 985         return 0;
 986 }
 987
 988 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 989                                    struct cfg80211_beacon_data *params)
 990 {
 991         struct ieee80211_sub_if_data *sdata;
 992         struct beacon_data *old;
 993         int err;
 994
 995         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 996         sdata_assert_lock(sdata);
 997
 998         /* don't allow changing the beacon while CSA is in place - offset
 999          * of channel switch counter may change
1000          */
1001         if (sdata->vif.csa_active)
1002                 return -EBUSY;
1003
1004         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1005         if (!old)
1006                 return -ENOENT;
1007
1008         err = ieee80211_assign_beacon(sdata, params, NULL);
1009         if (err < 0)
1010                 return err;
1011         ieee80211_bss_info_change_notify(sdata, err);
1012         return 0;
1013 }
1014
1015 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1016 {
1017         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1018         struct ieee80211_sub_if_data *vlan;
1019         struct ieee80211_local *local = sdata->local;
1020         struct beacon_data *old_beacon;
1021         struct probe_resp *old_probe_resp;
1022         struct cfg80211_chan_def chandef;
1023
1024         sdata_assert_lock(sdata);
1025
1026         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1027         if (!old_beacon)
1028                 return -ENOENT;
1029         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1030
1031         /* abort any running channel switch */
1032         mutex_lock(&local->mtx);
1033         sdata->vif.csa_active = false;
1034         if (sdata->csa_block_tx) {
1035                 ieee80211_wake_vif_queues(local, sdata,
1036                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1037                 sdata->csa_block_tx = false;
1038         }
1039
1040         mutex_unlock(&local->mtx);
1041
1042         kfree(sdata->u.ap.next_beacon);
1043         sdata->u.ap.next_beacon = NULL;
1044
1045         /* turn off carrier for this interface and dependent VLANs */
1046         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1047                 netif_carrier_off(vlan->dev);
1048         netif_carrier_off(dev);
1049
1050         /* remove beacon and probe response */
1051         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1052         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1053         kfree_rcu(old_beacon, rcu_head);
1054         if (old_probe_resp)
1055                 kfree_rcu(old_probe_resp, rcu_head);
1056         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1057
1058         __sta_info_flush(sdata, true);
1059         ieee80211_free_keys(sdata, true);
1060
1061         sdata->vif.bss_conf.enable_beacon = false;
1062         sdata->vif.bss_conf.ssid_len = 0;
1063         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1064         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1065
1066         if (sdata->wdev.cac_started) {
1067                 chandef = sdata->vif.bss_conf.chandef;
1068                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1069                 cfg80211_cac_event(sdata->dev, &chandef,
1070                                    NL80211_RADAR_CAC_ABORTED,
1071                                    GFP_KERNEL);
1072         }
1073
1074         drv_stop_ap(sdata->local, sdata);
1075
1076         /* free all potentially still buffered bcast frames */
1077         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1078         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1079
1080         mutex_lock(&local->mtx);
1081         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1082         ieee80211_vif_release_channel(sdata);
1083         mutex_unlock(&local->mtx);
1084
1085         return 0;
1086 }
1087
1088 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1089 struct iapp_layer2_update {
1090         u8 da[ETH_ALEN];        /* broadcast */
1091         u8 sa[ETH_ALEN];        /* STA addr */
1092         __be16 len;             /* 6 */
1093         u8 dsap;                /* 0 */
1094         u8 ssap;                /* 0 */
1095         u8 control;
1096         u8 xid_info[3];
1097 } __packed;
1098
1099 static void ieee80211_send_layer2_update(struct sta_info *sta)
1100 {
1101         struct iapp_layer2_update *msg;
1102         struct sk_buff *skb;
1103
1104         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1105          * bridge devices */
1106
1107         skb = dev_alloc_skb(sizeof(*msg));
1108         if (!skb)
1109                 return;
1110         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1111
1112         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1113          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1114
1115         eth_broadcast_addr(msg->da);
1116         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1117         msg->len = htons(6);
1118         msg->dsap = 0;
1119         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1120         msg->control = 0xaf;    /* XID response lsb.1111F101.
1121                                  * F=0 (no poll command; unsolicited frame) */
1122         msg->xid_info[0] = 0x81;        /* XID format identifier */
1123         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1124         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1125
1126         skb->dev = sta->sdata->dev;
1127         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1128         memset(skb->cb, 0, sizeof(skb->cb));
1129         netif_rx_ni(skb);
1130 }
1131
1132 static int sta_apply_auth_flags(struct ieee80211_local *local,
1133                                 struct sta_info *sta,
1134                                 u32 mask, u32 set)
1135 {
1136         int ret;
1137
1138         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1139             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1140             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1141                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1142                 if (ret)
1143                         return ret;
1144         }
1145
1146         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1147             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1148             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1149                 /*
1150                  * When peer becomes associated, init rate control as
1151                  * well. Some drivers require rate control initialized
1152                  * before drv_sta_state() is called.
1153                  */
1154                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1155                         rate_control_rate_init(sta);
1156
1157                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1158                 if (ret)
1159                         return ret;
1160         }
1161
1162         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1163                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1164                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1165                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1166                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1167                 else
1168                         ret = 0;
1169                 if (ret)
1170                         return ret;
1171         }
1172
1173         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1174             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1175             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1176                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1177                 if (ret)
1178                         return ret;
1179         }
1180
1181         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1182             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1183             test_sta_flag(sta, WLAN_STA_AUTH)) {
1184                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1185                 if (ret)
1186                         return ret;
1187         }
1188
1189         return 0;
1190 }
1191
1192 static void sta_apply_mesh_params(struct ieee80211_local *local,
1193                                   struct sta_info *sta,
1194                                   struct station_parameters *params)
1195 {
1196 #ifdef CONFIG_MAC80211_MESH
1197         struct ieee80211_sub_if_data *sdata = sta->sdata;
1198         u32 changed = 0;
1199
1200         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1201                 switch (params->plink_state) {
1202                 case NL80211_PLINK_ESTAB:
1203                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1204                                 changed = mesh_plink_inc_estab_count(sdata);
1205                         sta->mesh->plink_state = params->plink_state;
1206                         sta->mesh->aid = params->peer_aid;
1207
1208                         ieee80211_mps_sta_status_update(sta);
1209                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1210                                       sdata->u.mesh.mshcfg.power_mode);
1211                         break;
1212                 case NL80211_PLINK_LISTEN:
1213                 case NL80211_PLINK_BLOCKED:
1214                 case NL80211_PLINK_OPN_SNT:
1215                 case NL80211_PLINK_OPN_RCVD:
1216                 case NL80211_PLINK_CNF_RCVD:
1217                 case NL80211_PLINK_HOLDING:
1218                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1219                                 changed = mesh_plink_dec_estab_count(sdata);
1220                         sta->mesh->plink_state = params->plink_state;
1221
1222                         ieee80211_mps_sta_status_update(sta);
1223                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1224                                         NL80211_MESH_POWER_UNKNOWN);
1225                         break;
1226                 default:
1227                         /*  nothing  */
1228                         break;
1229                 }
1230         }
1231
1232         switch (params->plink_action) {
1233         case NL80211_PLINK_ACTION_NO_ACTION:
1234                 /* nothing */
1235                 break;
1236         case NL80211_PLINK_ACTION_OPEN:
1237                 changed |= mesh_plink_open(sta);
1238                 break;
1239         case NL80211_PLINK_ACTION_BLOCK:
1240                 changed |= mesh_plink_block(sta);
1241                 break;
1242         }
1243
1244         if (params->local_pm)
1245                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1246                                                           params->local_pm);
1247
1248         ieee80211_mbss_info_change_notify(sdata, changed);
1249 #endif
1250 }
1251
1252 static int sta_apply_parameters(struct ieee80211_local *local,
1253                                 struct sta_info *sta,
1254                                 struct station_parameters *params)
1255 {
1256         int ret = 0;
1257         struct ieee80211_supported_band *sband;
1258         struct ieee80211_sub_if_data *sdata = sta->sdata;
1259         u32 mask, set;
1260
1261         sband = ieee80211_get_sband(sdata);
1262         if (!sband)
1263                 return -EINVAL;
1264
1265         mask = params->sta_flags_mask;
1266         set = params->sta_flags_set;
1267
1268         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1269                 /*
1270                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1271                  * API but must follow AUTHENTICATED for driver state.
1272                  */
1273                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1274                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1275                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1276                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1277         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1278                 /*
1279                  * TDLS -- everything follows authorized, but
1280                  * only becoming authorized is possible, not
1281                  * going back
1282                  */
1283                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1284                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1285                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1286                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1287                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1288                 }
1289         }
1290
1291         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1292             local->hw.queues >= IEEE80211_NUM_ACS)
1293                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1294
1295         /* auth flags will be set later for TDLS,
1296          * and for unassociated stations that move to assocaited */
1297         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1298             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1299               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1300                 ret = sta_apply_auth_flags(local, sta, mask, set);
1301                 if (ret)
1302                         return ret;
1303         }
1304
1305         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1306                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1307                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1308                 else
1309                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1310         }
1311
1312         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1313                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1314                 if (set & BIT(NL80211_STA_FLAG_MFP))
1315                         set_sta_flag(sta, WLAN_STA_MFP);
1316                 else
1317                         clear_sta_flag(sta, WLAN_STA_MFP);
1318         }
1319
1320         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1321                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1322                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1323                 else
1324                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1325         }
1326
1327         /* mark TDLS channel switch support, if the AP allows it */
1328         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1329             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1330             params->ext_capab_len >= 4 &&
1331             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1332                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1333
1334         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1335             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1336             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1337             params->ext_capab_len >= 8 &&
1338             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1339                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1340
1341         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1342                 sta->sta.uapsd_queues = params->uapsd_queues;
1343                 sta->sta.max_sp = params->max_sp;
1344         }
1345
1346         /* The sender might not have sent the last bit, consider it to be 0 */
1347         if (params->ext_capab_len >= 8) {
1348                 u8 val = (params->ext_capab[7] &
1349                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1350
1351                 /* we did get all the bits, take the MSB as well */
1352                 if (params->ext_capab_len >= 9) {
1353                         u8 val_msb = params->ext_capab[8] &
1354                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1355                         val_msb <<= 1;
1356                         val |= val_msb;
1357                 }
1358
1359                 switch (val) {
1360                 case 1:
1361                         sta->sta.max_amsdu_subframes = 32;
1362                         break;
1363                 case 2:
1364                         sta->sta.max_amsdu_subframes = 16;
1365                         break;
1366                 case 3:
1367                         sta->sta.max_amsdu_subframes = 8;
1368                         break;
1369                 default:
1370                         sta->sta.max_amsdu_subframes = 0;
1371                 }
1372         }
1373
1374         /*
1375          * cfg80211 validates this (1-2007) and allows setting the AID
1376          * only when creating a new station entry
1377          */
1378         if (params->aid)
1379                 sta->sta.aid = params->aid;
1380
1381         /*
1382          * Some of the following updates would be racy if called on an
1383          * existing station, via ieee80211_change_station(). However,
1384          * all such changes are rejected by cfg80211 except for updates
1385          * changing the supported rates on an existing but not yet used
1386          * TDLS peer.
1387          */
1388
1389         if (params->listen_interval >= 0)
1390                 sta->listen_interval = params->listen_interval;
1391
1392         if (params->supported_rates) {
1393                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1394                                          sband, params->supported_rates,
1395                                          params->supported_rates_len,
1396                                          &sta->sta.supp_rates[sband->band]);
1397         }
1398
1399         if (params->ht_capa)
1400                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1401                                                   params->ht_capa, sta);
1402
1403         /* VHT can override some HT caps such as the A-MSDU max length */
1404         if (params->vht_capa)
1405                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1406                                                     params->vht_capa, sta);
1407
1408         if (params->opmode_notif_used) {
1409                 /* returned value is only needed for rc update, but the
1410                  * rc isn't initialized here yet, so ignore it
1411                  */
1412                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1413                                               sband->band);
1414         }
1415
1416         if (params->support_p2p_ps >= 0)
1417                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1418
1419         if (ieee80211_vif_is_mesh(&sdata->vif))
1420                 sta_apply_mesh_params(local, sta, params);
1421
1422         /* set the STA state after all sta info from usermode has been set */
1423         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1424             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1425                 ret = sta_apply_auth_flags(local, sta, mask, set);
1426                 if (ret)
1427                         return ret;
1428         }
1429
1430         return 0;
1431 }
1432
1433 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1434                                  const u8 *mac,
1435                                  struct station_parameters *params)
1436 {
1437         struct ieee80211_local *local = wiphy_priv(wiphy);
1438         struct sta_info *sta;
1439         struct ieee80211_sub_if_data *sdata;
1440         int err;
1441         int layer2_update;
1442
1443         if (params->vlan) {
1444                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1445
1446                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1447                     sdata->vif.type != NL80211_IFTYPE_AP)
1448                         return -EINVAL;
1449         } else
1450                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452         if (ether_addr_equal(mac, sdata->vif.addr))
1453                 return -EINVAL;
1454
1455         if (is_multicast_ether_addr(mac))
1456                 return -EINVAL;
1457
1458         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1459         if (!sta)
1460                 return -ENOMEM;
1461
1462         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1463                 sta->sta.tdls = true;
1464
1465         err = sta_apply_parameters(local, sta, params);
1466         if (err) {
1467                 sta_info_free(local, sta);
1468                 return err;
1469         }
1470
1471         /*
1472          * for TDLS and for unassociated station, rate control should be
1473          * initialized only when rates are known and station is marked
1474          * authorized/associated
1475          */
1476         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1477             test_sta_flag(sta, WLAN_STA_ASSOC))
1478                 rate_control_rate_init(sta);
1479
1480         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1481                 sdata->vif.type == NL80211_IFTYPE_AP;
1482
1483         err = sta_info_insert_rcu(sta);
1484         if (err) {
1485                 rcu_read_unlock();
1486                 return err;
1487         }
1488
1489         if (layer2_update)
1490                 ieee80211_send_layer2_update(sta);
1491
1492         rcu_read_unlock();
1493
1494         return 0;
1495 }
1496
1497 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1498                                  struct station_del_parameters *params)
1499 {
1500         struct ieee80211_sub_if_data *sdata;
1501
1502         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1503
1504         if (params->mac)
1505                 return sta_info_destroy_addr_bss(sdata, params->mac);
1506
1507         sta_info_flush(sdata);
1508         return 0;
1509 }
1510
1511 static int ieee80211_change_station(struct wiphy *wiphy,
1512                                     struct net_device *dev, const u8 *mac,
1513                                     struct station_parameters *params)
1514 {
1515         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1516         struct ieee80211_local *local = wiphy_priv(wiphy);
1517         struct sta_info *sta;
1518         struct ieee80211_sub_if_data *vlansdata;
1519         enum cfg80211_station_type statype;
1520         int err;
1521
1522         mutex_lock(&local->sta_mtx);
1523
1524         sta = sta_info_get_bss(sdata, mac);
1525         if (!sta) {
1526                 err = -ENOENT;
1527                 goto out_err;
1528         }
1529
1530         switch (sdata->vif.type) {
1531         case NL80211_IFTYPE_MESH_POINT:
1532                 if (sdata->u.mesh.user_mpm)
1533                         statype = CFG80211_STA_MESH_PEER_USER;
1534                 else
1535                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1536                 break;
1537         case NL80211_IFTYPE_ADHOC:
1538                 statype = CFG80211_STA_IBSS;
1539                 break;
1540         case NL80211_IFTYPE_STATION:
1541                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1542                         statype = CFG80211_STA_AP_STA;
1543                         break;
1544                 }
1545                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1546                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1547                 else
1548                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1549                 break;
1550         case NL80211_IFTYPE_AP:
1551         case NL80211_IFTYPE_AP_VLAN:
1552                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1553                         statype = CFG80211_STA_AP_CLIENT;
1554                 else
1555                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1556                 break;
1557         default:
1558                 err = -EOPNOTSUPP;
1559                 goto out_err;
1560         }
1561
1562         err = cfg80211_check_station_change(wiphy, params, statype);
1563         if (err)
1564                 goto out_err;
1565
1566         if (params->vlan && params->vlan != sta->sdata->dev) {
1567                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1568
1569                 if (params->vlan->ieee80211_ptr->use_4addr) {
1570                         if (vlansdata->u.vlan.sta) {
1571                                 err = -EBUSY;
1572                                 goto out_err;
1573                         }
1574
1575                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1576                         __ieee80211_check_fast_rx_iface(vlansdata);
1577                 }
1578
1579                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1580                     sta->sdata->u.vlan.sta)
1581                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1582
1583                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1584                         ieee80211_vif_dec_num_mcast(sta->sdata);
1585
1586                 sta->sdata = vlansdata;
1587                 ieee80211_check_fast_xmit(sta);
1588
1589                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1590                         ieee80211_vif_inc_num_mcast(sta->sdata);
1591
1592                 ieee80211_send_layer2_update(sta);
1593         }
1594
1595         err = sta_apply_parameters(local, sta, params);
1596         if (err)
1597                 goto out_err;
1598
1599         mutex_unlock(&local->sta_mtx);
1600
1601         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1602              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1603             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1604             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1605             sta_info_tx_streams(sta) != 1) {
1606                 ht_dbg(sta->sdata,
1607                        "%pM just authorized and MIMO capable - update SMPS\n",
1608                        sta->sta.addr);
1609                 ieee80211_send_smps_action(sta->sdata,
1610                         sta->sdata->bss->req_smps,
1611                         sta->sta.addr,
1612                         sta->sdata->vif.bss_conf.bssid);
1613         }
1614
1615         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1616             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1617                 ieee80211_recalc_ps(local);
1618                 ieee80211_recalc_ps_vif(sdata);
1619         }
1620
1621         return 0;
1622 out_err:
1623         mutex_unlock(&local->sta_mtx);
1624         return err;
1625 }
1626
1627 #ifdef CONFIG_MAC80211_MESH
1628 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1629                                const u8 *dst, const u8 *next_hop)
1630 {
1631         struct ieee80211_sub_if_data *sdata;
1632         struct mesh_path *mpath;
1633         struct sta_info *sta;
1634
1635         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1636
1637         rcu_read_lock();
1638         sta = sta_info_get(sdata, next_hop);
1639         if (!sta) {
1640                 rcu_read_unlock();
1641                 return -ENOENT;
1642         }
1643
1644         mpath = mesh_path_add(sdata, dst);
1645         if (IS_ERR(mpath)) {
1646                 rcu_read_unlock();
1647                 return PTR_ERR(mpath);
1648         }
1649
1650         mesh_path_fix_nexthop(mpath, sta);
1651
1652         rcu_read_unlock();
1653         return 0;
1654 }
1655
1656 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1657                                const u8 *dst)
1658 {
1659         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1660
1661         if (dst)
1662                 return mesh_path_del(sdata, dst);
1663
1664         mesh_path_flush_by_iface(sdata);
1665         return 0;
1666 }
1667
1668 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1669                                   const u8 *dst, const u8 *next_hop)
1670 {
1671         struct ieee80211_sub_if_data *sdata;
1672         struct mesh_path *mpath;
1673         struct sta_info *sta;
1674
1675         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1676
1677         rcu_read_lock();
1678
1679         sta = sta_info_get(sdata, next_hop);
1680         if (!sta) {
1681                 rcu_read_unlock();
1682                 return -ENOENT;
1683         }
1684
1685         mpath = mesh_path_lookup(sdata, dst);
1686         if (!mpath) {
1687                 rcu_read_unlock();
1688                 return -ENOENT;
1689         }
1690
1691         mesh_path_fix_nexthop(mpath, sta);
1692
1693         rcu_read_unlock();
1694         return 0;
1695 }
1696
1697 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1698                             struct mpath_info *pinfo)
1699 {
1700         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1701
1702         if (next_hop_sta)
1703                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1704         else
1705                 eth_zero_addr(next_hop);
1706
1707         memset(pinfo, 0, sizeof(*pinfo));
1708
1709         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1710
1711         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1712                         MPATH_INFO_SN |
1713                         MPATH_INFO_METRIC |
1714                         MPATH_INFO_EXPTIME |
1715                         MPATH_INFO_DISCOVERY_TIMEOUT |
1716                         MPATH_INFO_DISCOVERY_RETRIES |
1717                         MPATH_INFO_FLAGS;
1718
1719         pinfo->frame_qlen = mpath->frame_queue.qlen;
1720         pinfo->sn = mpath->sn;
1721         pinfo->metric = mpath->metric;
1722         if (time_before(jiffies, mpath->exp_time))
1723                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1724         pinfo->discovery_timeout =
1725                         jiffies_to_msecs(mpath->discovery_timeout);
1726         pinfo->discovery_retries = mpath->discovery_retries;
1727         if (mpath->flags & MESH_PATH_ACTIVE)
1728                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1729         if (mpath->flags & MESH_PATH_RESOLVING)
1730                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1731         if (mpath->flags & MESH_PATH_SN_VALID)
1732                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1733         if (mpath->flags & MESH_PATH_FIXED)
1734                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1735         if (mpath->flags & MESH_PATH_RESOLVED)
1736                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1737 }
1738
1739 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1740                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1741
1742 {
1743         struct ieee80211_sub_if_data *sdata;
1744         struct mesh_path *mpath;
1745
1746         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1747
1748         rcu_read_lock();
1749         mpath = mesh_path_lookup(sdata, dst);
1750         if (!mpath) {
1751                 rcu_read_unlock();
1752                 return -ENOENT;
1753         }
1754         memcpy(dst, mpath->dst, ETH_ALEN);
1755         mpath_set_pinfo(mpath, next_hop, pinfo);
1756         rcu_read_unlock();
1757         return 0;
1758 }
1759
1760 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1761                                 int idx, u8 *dst, u8 *next_hop,
1762                                 struct mpath_info *pinfo)
1763 {
1764         struct ieee80211_sub_if_data *sdata;
1765         struct mesh_path *mpath;
1766
1767         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1768
1769         rcu_read_lock();
1770         mpath = mesh_path_lookup_by_idx(sdata, idx);
1771         if (!mpath) {
1772                 rcu_read_unlock();
1773                 return -ENOENT;
1774         }
1775         memcpy(dst, mpath->dst, ETH_ALEN);
1776         mpath_set_pinfo(mpath, next_hop, pinfo);
1777         rcu_read_unlock();
1778         return 0;
1779 }
1780
1781 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1782                           struct mpath_info *pinfo)
1783 {
1784         memset(pinfo, 0, sizeof(*pinfo));
1785         memcpy(mpp, mpath->mpp, ETH_ALEN);
1786
1787         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1788 }
1789
1790 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1791                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1792
1793 {
1794         struct ieee80211_sub_if_data *sdata;
1795         struct mesh_path *mpath;
1796
1797         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1798
1799         rcu_read_lock();
1800         mpath = mpp_path_lookup(sdata, dst);
1801         if (!mpath) {
1802                 rcu_read_unlock();
1803                 return -ENOENT;
1804         }
1805         memcpy(dst, mpath->dst, ETH_ALEN);
1806         mpp_set_pinfo(mpath, mpp, pinfo);
1807         rcu_read_unlock();
1808         return 0;
1809 }
1810
1811 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1812                               int idx, u8 *dst, u8 *mpp,
1813                               struct mpath_info *pinfo)
1814 {
1815         struct ieee80211_sub_if_data *sdata;
1816         struct mesh_path *mpath;
1817
1818         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1819
1820         rcu_read_lock();
1821         mpath = mpp_path_lookup_by_idx(sdata, idx);
1822         if (!mpath) {
1823                 rcu_read_unlock();
1824                 return -ENOENT;
1825         }
1826         memcpy(dst, mpath->dst, ETH_ALEN);
1827         mpp_set_pinfo(mpath, mpp, pinfo);
1828         rcu_read_unlock();
1829         return 0;
1830 }
1831
1832 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1833                                 struct net_device *dev,
1834                                 struct mesh_config *conf)
1835 {
1836         struct ieee80211_sub_if_data *sdata;
1837         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838
1839         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1840         return 0;
1841 }
1842
1843 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1844 {
1845         return (mask >> (parm-1)) & 0x1;
1846 }
1847
1848 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1849                 const struct mesh_setup *setup)
1850 {
1851         u8 *new_ie;
1852         const u8 *old_ie;
1853         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1854                                         struct ieee80211_sub_if_data, u.mesh);
1855
1856         /* allocate information elements */
1857         new_ie = NULL;
1858         old_ie = ifmsh->ie;
1859
1860         if (setup->ie_len) {
1861                 new_ie = kmemdup(setup->ie, setup->ie_len,
1862                                 GFP_KERNEL);
1863                 if (!new_ie)
1864                         return -ENOMEM;
1865         }
1866         ifmsh->ie_len = setup->ie_len;
1867         ifmsh->ie = new_ie;
1868         kfree(old_ie);
1869
1870         /* now copy the rest of the setup parameters */
1871         ifmsh->mesh_id_len = setup->mesh_id_len;
1872         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1873         ifmsh->mesh_sp_id = setup->sync_method;
1874         ifmsh->mesh_pp_id = setup->path_sel_proto;
1875         ifmsh->mesh_pm_id = setup->path_metric;
1876         ifmsh->user_mpm = setup->user_mpm;
1877         ifmsh->mesh_auth_id = setup->auth_id;
1878         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1879         if (setup->is_authenticated)
1880                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1881         if (setup->is_secure)
1882                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1883
1884         /* mcast rate setting in Mesh Node */
1885         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1886                                                 sizeof(setup->mcast_rate));
1887         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1888
1889         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1890         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1891
1892         return 0;
1893 }
1894
1895 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1896                                         struct net_device *dev, u32 mask,
1897                                         const struct mesh_config *nconf)
1898 {
1899         struct mesh_config *conf;
1900         struct ieee80211_sub_if_data *sdata;
1901         struct ieee80211_if_mesh *ifmsh;
1902
1903         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1904         ifmsh = &sdata->u.mesh;
1905
1906         /* Set the config options which we are interested in setting */
1907         conf = &(sdata->u.mesh.mshcfg);
1908         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1909                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1910         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1911                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1912         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1913                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1914         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1915                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1916         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1917                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1919                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1921                 conf->element_ttl = nconf->element_ttl;
1922         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1923                 if (ifmsh->user_mpm)
1924                         return -EBUSY;
1925                 conf->auto_open_plinks = nconf->auto_open_plinks;
1926         }
1927         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1928                 conf->dot11MeshNbrOffsetMaxNeighbor =
1929                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1930         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1931                 conf->dot11MeshHWMPmaxPREQretries =
1932                         nconf->dot11MeshHWMPmaxPREQretries;
1933         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1934                 conf->path_refresh_time = nconf->path_refresh_time;
1935         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1936                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1937         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1938                 conf->dot11MeshHWMPactivePathTimeout =
1939                         nconf->dot11MeshHWMPactivePathTimeout;
1940         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1941                 conf->dot11MeshHWMPpreqMinInterval =
1942                         nconf->dot11MeshHWMPpreqMinInterval;
1943         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1944                 conf->dot11MeshHWMPperrMinInterval =
1945                         nconf->dot11MeshHWMPperrMinInterval;
1946         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1947                            mask))
1948                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1949                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1950         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1951                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1952                 ieee80211_mesh_root_setup(ifmsh);
1953         }
1954         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1955                 /* our current gate announcement implementation rides on root
1956                  * announcements, so require this ifmsh to also be a root node
1957                  * */
1958                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1959                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1960                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1961                         ieee80211_mesh_root_setup(ifmsh);
1962                 }
1963                 conf->dot11MeshGateAnnouncementProtocol =
1964                         nconf->dot11MeshGateAnnouncementProtocol;
1965         }
1966         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1967                 conf->dot11MeshHWMPRannInterval =
1968                         nconf->dot11MeshHWMPRannInterval;
1969         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1970                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1971         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1972                 /* our RSSI threshold implementation is supported only for
1973                  * devices that report signal in dBm.
1974                  */
1975                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1976                         return -ENOTSUPP;
1977                 conf->rssi_threshold = nconf->rssi_threshold;
1978         }
1979         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1980                 conf->ht_opmode = nconf->ht_opmode;
1981                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1982                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1983         }
1984         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1985                 conf->dot11MeshHWMPactivePathToRootTimeout =
1986                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1987         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1988                 conf->dot11MeshHWMProotInterval =
1989                         nconf->dot11MeshHWMProotInterval;
1990         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1991                 conf->dot11MeshHWMPconfirmationInterval =
1992                         nconf->dot11MeshHWMPconfirmationInterval;
1993         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1994                 conf->power_mode = nconf->power_mode;
1995                 ieee80211_mps_local_status_update(sdata);
1996         }
1997         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1998                 conf->dot11MeshAwakeWindowDuration =
1999                         nconf->dot11MeshAwakeWindowDuration;
2000         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2001                 conf->plink_timeout = nconf->plink_timeout;
2002         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2003         return 0;
2004 }
2005
2006 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2007                                const struct mesh_config *conf,
2008                                const struct mesh_setup *setup)
2009 {
2010         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2011         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2012         int err;
2013
2014         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2015         err = copy_mesh_setup(ifmsh, setup);
2016         if (err)
2017                 return err;
2018
2019         /* can mesh use other SMPS modes? */
2020         sdata->smps_mode = IEEE80211_SMPS_OFF;
2021         sdata->needed_rx_chains = sdata->local->rx_chains;
2022
2023         mutex_lock(&sdata->local->mtx);
2024         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2025                                         IEEE80211_CHANCTX_SHARED);
2026         mutex_unlock(&sdata->local->mtx);
2027         if (err)
2028                 return err;
2029
2030         return ieee80211_start_mesh(sdata);
2031 }
2032
2033 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2034 {
2035         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2036
2037         ieee80211_stop_mesh(sdata);
2038         mutex_lock(&sdata->local->mtx);
2039         ieee80211_vif_release_channel(sdata);
2040         mutex_unlock(&sdata->local->mtx);
2041
2042         return 0;
2043 }
2044 #endif
2045
2046 static int ieee80211_change_bss(struct wiphy *wiphy,
2047                                 struct net_device *dev,
2048                                 struct bss_parameters *params)
2049 {
2050         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2051         struct ieee80211_supported_band *sband;
2052         u32 changed = 0;
2053
2054         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2055                 return -ENOENT;
2056
2057         sband = ieee80211_get_sband(sdata);
2058         if (!sband)
2059                 return -EINVAL;
2060
2061         if (params->use_cts_prot >= 0) {
2062                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2063                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2064         }
2065         if (params->use_short_preamble >= 0) {
2066                 sdata->vif.bss_conf.use_short_preamble =
2067                         params->use_short_preamble;
2068                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2069         }
2070
2071         if (!sdata->vif.bss_conf.use_short_slot &&
2072             sband->band == NL80211_BAND_5GHZ) {
2073                 sdata->vif.bss_conf.use_short_slot = true;
2074                 changed |= BSS_CHANGED_ERP_SLOT;
2075         }
2076
2077         if (params->use_short_slot_time >= 0) {
2078                 sdata->vif.bss_conf.use_short_slot =
2079                         params->use_short_slot_time;
2080                 changed |= BSS_CHANGED_ERP_SLOT;
2081         }
2082
2083         if (params->basic_rates) {
2084                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2085                                          wiphy->bands[sband->band],
2086                                          params->basic_rates,
2087                                          params->basic_rates_len,
2088                                          &sdata->vif.bss_conf.basic_rates);
2089                 changed |= BSS_CHANGED_BASIC_RATES;
2090                 ieee80211_check_rate_mask(sdata);
2091         }
2092
2093         if (params->ap_isolate >= 0) {
2094                 if (params->ap_isolate)
2095                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2096                 else
2097                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2098                 ieee80211_check_fast_rx_iface(sdata);
2099         }
2100
2101         if (params->ht_opmode >= 0) {
2102                 sdata->vif.bss_conf.ht_operation_mode =
2103                         (u16) params->ht_opmode;
2104                 changed |= BSS_CHANGED_HT;
2105         }
2106
2107         if (params->p2p_ctwindow >= 0) {
2108                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2109                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2110                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2111                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2112                 changed |= BSS_CHANGED_P2P_PS;
2113         }
2114
2115         if (params->p2p_opp_ps > 0) {
2116                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2117                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2118                 changed |= BSS_CHANGED_P2P_PS;
2119         } else if (params->p2p_opp_ps == 0) {
2120                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2121                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2122                 changed |= BSS_CHANGED_P2P_PS;
2123         }
2124
2125         ieee80211_bss_info_change_notify(sdata, changed);
2126
2127         return 0;
2128 }
2129
2130 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2131                                     struct net_device *dev,
2132                                     struct ieee80211_txq_params *params)
2133 {
2134         struct ieee80211_local *local = wiphy_priv(wiphy);
2135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2136         struct ieee80211_tx_queue_params p;
2137
2138         if (!local->ops->conf_tx)
2139                 return -EOPNOTSUPP;
2140
2141         if (local->hw.queues < IEEE80211_NUM_ACS)
2142                 return -EOPNOTSUPP;
2143
2144         memset(&p, 0, sizeof(p));
2145         p.aifs = params->aifs;
2146         p.cw_max = params->cwmax;
2147         p.cw_min = params->cwmin;
2148         p.txop = params->txop;
2149
2150         /*
2151          * Setting tx queue params disables u-apsd because it's only
2152          * called in master mode.
2153          */
2154         p.uapsd = false;
2155
2156         sdata->tx_conf[params->ac] = p;
2157         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2158                 wiphy_debug(local->hw.wiphy,
2159                             "failed to set TX queue parameters for AC %d\n",
2160                             params->ac);
2161                 return -EINVAL;
2162         }
2163
2164         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2165
2166         return 0;
2167 }
2168
2169 #ifdef CONFIG_PM
2170 static int ieee80211_suspend(struct wiphy *wiphy,
2171                              struct cfg80211_wowlan *wowlan)
2172 {
2173         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2174 }
2175
2176 static int ieee80211_resume(struct wiphy *wiphy)
2177 {
2178         return __ieee80211_resume(wiphy_priv(wiphy));
2179 }
2180 #else
2181 #define ieee80211_suspend NULL
2182 #define ieee80211_resume NULL
2183 #endif
2184
2185 static int ieee80211_scan(struct wiphy *wiphy,
2186                           struct cfg80211_scan_request *req)
2187 {
2188         struct ieee80211_sub_if_data *sdata;
2189
2190         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2191
2192         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2193         case NL80211_IFTYPE_STATION:
2194         case NL80211_IFTYPE_ADHOC:
2195         case NL80211_IFTYPE_MESH_POINT:
2196         case NL80211_IFTYPE_P2P_CLIENT:
2197         case NL80211_IFTYPE_P2P_DEVICE:
2198                 break;
2199         case NL80211_IFTYPE_P2P_GO:
2200                 if (sdata->local->ops->hw_scan)
2201                         break;
2202                 /*
2203                  * FIXME: implement NoA while scanning in software,
2204                  * for now fall through to allow scanning only when
2205                  * beaconing hasn't been configured yet
2206                  */
2207         case NL80211_IFTYPE_AP:
2208                 /*
2209                  * If the scan has been forced (and the driver supports
2210                  * forcing), don't care about being beaconing already.
2211                  * This will create problems to the attached stations (e.g. all
2212                  * the  frames sent while scanning on other channel will be
2213                  * lost)
2214                  */
2215                 if (sdata->u.ap.beacon &&
2216                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2217                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2218                         return -EOPNOTSUPP;
2219                 break;
2220         case NL80211_IFTYPE_NAN:
2221         default:
2222                 return -EOPNOTSUPP;
2223         }
2224
2225         return ieee80211_request_scan(sdata, req);
2226 }
2227
2228 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2229 {
2230         ieee80211_scan_cancel(wiphy_priv(wiphy));
2231 }
2232
2233 static int
2234 ieee80211_sched_scan_start(struct wiphy *wiphy,
2235                            struct net_device *dev,
2236                            struct cfg80211_sched_scan_request *req)
2237 {
2238         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2239
2240         if (!sdata->local->ops->sched_scan_start)
2241                 return -EOPNOTSUPP;
2242
2243         return ieee80211_request_sched_scan_start(sdata, req);
2244 }
2245
2246 static int
2247 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2248                           u64 reqid)
2249 {
2250         struct ieee80211_local *local = wiphy_priv(wiphy);
2251
2252         if (!local->ops->sched_scan_stop)
2253                 return -EOPNOTSUPP;
2254
2255         return ieee80211_request_sched_scan_stop(local);
2256 }
2257
2258 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2259                           struct cfg80211_auth_request *req)
2260 {
2261         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2262 }
2263
2264 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2265                            struct cfg80211_assoc_request *req)
2266 {
2267         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2268 }
2269
2270 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2271                             struct cfg80211_deauth_request *req)
2272 {
2273         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2274 }
2275
2276 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2277                               struct cfg80211_disassoc_request *req)
2278 {
2279         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2280 }
2281
2282 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2283                                struct cfg80211_ibss_params *params)
2284 {
2285         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2286 }
2287
2288 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2289 {
2290         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2291 }
2292
2293 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2294                               struct ocb_setup *setup)
2295 {
2296         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2297 }
2298
2299 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2300 {
2301         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2302 }
2303
2304 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2305                                     int rate[NUM_NL80211_BANDS])
2306 {
2307         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2308
2309         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2310                sizeof(int) * NUM_NL80211_BANDS);
2311
2312         return 0;
2313 }
2314
2315 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2316 {
2317         struct ieee80211_local *local = wiphy_priv(wiphy);
2318         int err;
2319
2320         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2321                 ieee80211_check_fast_xmit_all(local);
2322
2323                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2324
2325                 if (err) {
2326                         ieee80211_check_fast_xmit_all(local);
2327                         return err;
2328                 }
2329         }
2330
2331         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2332             (changed & WIPHY_PARAM_DYN_ACK)) {
2333                 s16 coverage_class;
2334
2335                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2336                                         wiphy->coverage_class : -1;
2337                 err = drv_set_coverage_class(local, coverage_class);
2338
2339                 if (err)
2340                         return err;
2341         }
2342
2343         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2344                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2345
2346                 if (err)
2347                         return err;
2348         }
2349
2350         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2351                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2352                         return -EINVAL;
2353                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2354         }
2355         if (changed & WIPHY_PARAM_RETRY_LONG) {
2356                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2357                         return -EINVAL;
2358                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2359         }
2360         if (changed &
2361             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2362                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2363
2364         return 0;
2365 }
2366
2367 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2368                                   struct wireless_dev *wdev,
2369                                   enum nl80211_tx_power_setting type, int mbm)
2370 {
2371         struct ieee80211_local *local = wiphy_priv(wiphy);
2372         struct ieee80211_sub_if_data *sdata;
2373         enum nl80211_tx_power_setting txp_type = type;
2374         bool update_txp_type = false;
2375
2376         if (wdev) {
2377                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2378
2379                 switch (type) {
2380                 case NL80211_TX_POWER_AUTOMATIC:
2381                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2382                         txp_type = NL80211_TX_POWER_LIMITED;
2383                         break;
2384                 case NL80211_TX_POWER_LIMITED:
2385                 case NL80211_TX_POWER_FIXED:
2386                         if (mbm < 0 || (mbm % 100))
2387                                 return -EOPNOTSUPP;
2388                         sdata->user_power_level = MBM_TO_DBM(mbm);
2389                         break;
2390                 }
2391
2392                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2393                         update_txp_type = true;
2394                         sdata->vif.bss_conf.txpower_type = txp_type;
2395                 }
2396
2397                 ieee80211_recalc_txpower(sdata, update_txp_type);
2398
2399                 return 0;
2400         }
2401
2402         switch (type) {
2403         case NL80211_TX_POWER_AUTOMATIC:
2404                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2405                 txp_type = NL80211_TX_POWER_LIMITED;
2406                 break;
2407         case NL80211_TX_POWER_LIMITED:
2408         case NL80211_TX_POWER_FIXED:
2409                 if (mbm < 0 || (mbm % 100))
2410                         return -EOPNOTSUPP;
2411                 local->user_power_level = MBM_TO_DBM(mbm);
2412                 break;
2413         }
2414
2415         mutex_lock(&local->iflist_mtx);
2416         list_for_each_entry(sdata, &local->interfaces, list) {
2417                 sdata->user_power_level = local->user_power_level;
2418                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2419                         update_txp_type = true;
2420                 sdata->vif.bss_conf.txpower_type = txp_type;
2421         }
2422         list_for_each_entry(sdata, &local->interfaces, list)
2423                 ieee80211_recalc_txpower(sdata, update_txp_type);
2424         mutex_unlock(&local->iflist_mtx);
2425
2426         return 0;
2427 }
2428
2429 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2430                                   struct wireless_dev *wdev,
2431                                   int *dbm)
2432 {
2433         struct ieee80211_local *local = wiphy_priv(wiphy);
2434         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2435
2436         if (local->ops->get_txpower)
2437                 return drv_get_txpower(local, sdata, dbm);
2438
2439         if (!local->use_chanctx)
2440                 *dbm = local->hw.conf.power_level;
2441         else
2442                 *dbm = sdata->vif.bss_conf.txpower;
2443
2444         return 0;
2445 }
2446
2447 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2448                                   const u8 *addr)
2449 {
2450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2451
2452         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2453
2454         return 0;
2455 }
2456
2457 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2458 {
2459         struct ieee80211_local *local = wiphy_priv(wiphy);
2460
2461         drv_rfkill_poll(local);
2462 }
2463
2464 #ifdef CONFIG_NL80211_TESTMODE
2465 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2466                                   struct wireless_dev *wdev,
2467                                   void *data, int len)
2468 {
2469         struct ieee80211_local *local = wiphy_priv(wiphy);
2470         struct ieee80211_vif *vif = NULL;
2471
2472         if (!local->ops->testmode_cmd)
2473                 return -EOPNOTSUPP;
2474
2475         if (wdev) {
2476                 struct ieee80211_sub_if_data *sdata;
2477
2478                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2479                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2480                         vif = &sdata->vif;
2481         }
2482
2483         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2484 }
2485
2486 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2487                                    struct sk_buff *skb,
2488                                    struct netlink_callback *cb,
2489                                    void *data, int len)
2490 {
2491         struct ieee80211_local *local = wiphy_priv(wiphy);
2492
2493         if (!local->ops->testmode_dump)
2494                 return -EOPNOTSUPP;
2495
2496         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2497 }
2498 #endif
2499
2500 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2501                                 enum ieee80211_smps_mode smps_mode)
2502 {
2503         struct sta_info *sta;
2504         enum ieee80211_smps_mode old_req;
2505
2506         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2507                 return -EINVAL;
2508
2509         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2510                 return 0;
2511
2512         old_req = sdata->u.ap.req_smps;
2513         sdata->u.ap.req_smps = smps_mode;
2514
2515         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2516         if (old_req == smps_mode ||
2517             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2518                 return 0;
2519
2520         ht_dbg(sdata,
2521                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2522                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2523
2524         mutex_lock(&sdata->local->sta_mtx);
2525         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2526                 /*
2527                  * Only stations associated to our AP and
2528                  * associated VLANs
2529                  */
2530                 if (sta->sdata->bss != &sdata->u.ap)
2531                         continue;
2532
2533                 /* This station doesn't support MIMO - skip it */
2534                 if (sta_info_tx_streams(sta) == 1)
2535                         continue;
2536
2537                 /*
2538                  * Don't wake up a STA just to send the action frame
2539                  * unless we are getting more restrictive.
2540                  */
2541                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2542                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2543                                                    smps_mode)) {
2544                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2545                                sta->sta.addr);
2546                         continue;
2547                 }
2548
2549                 /*
2550                  * If the STA is not authorized, wait until it gets
2551                  * authorized and the action frame will be sent then.
2552                  */
2553                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2554                         continue;
2555
2556                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2557                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2558                                            sdata->vif.bss_conf.bssid);
2559         }
2560         mutex_unlock(&sdata->local->sta_mtx);
2561
2562         sdata->smps_mode = smps_mode;
2563         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2564
2565         return 0;
2566 }
2567
2568 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2569                                  enum ieee80211_smps_mode smps_mode)
2570 {
2571         const u8 *ap;
2572         enum ieee80211_smps_mode old_req;
2573         int err;
2574         struct sta_info *sta;
2575         bool tdls_peer_found = false;
2576
2577         lockdep_assert_held(&sdata->wdev.mtx);
2578
2579         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2580                 return -EINVAL;
2581
2582         old_req = sdata->u.mgd.req_smps;
2583         sdata->u.mgd.req_smps = smps_mode;
2584
2585         if (old_req == smps_mode &&
2586             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2587                 return 0;
2588
2589         /*
2590          * If not associated, or current association is not an HT
2591          * association, there's no need to do anything, just store
2592          * the new value until we associate.
2593          */
2594         if (!sdata->u.mgd.associated ||
2595             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2596                 return 0;
2597
2598         ap = sdata->u.mgd.associated->bssid;
2599
2600         rcu_read_lock();
2601         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2602                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2603                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2604                         continue;
2605
2606                 tdls_peer_found = true;
2607                 break;
2608         }
2609         rcu_read_unlock();
2610
2611         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2612                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2613                         smps_mode = IEEE80211_SMPS_OFF;
2614                 else
2615                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2616         }
2617
2618         /* send SM PS frame to AP */
2619         err = ieee80211_send_smps_action(sdata, smps_mode,
2620                                          ap, ap);
2621         if (err)
2622                 sdata->u.mgd.req_smps = old_req;
2623         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2624                 ieee80211_teardown_tdls_peers(sdata);
2625
2626         return err;
2627 }
2628
2629 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2630                                     bool enabled, int timeout)
2631 {
2632         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2633         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2634
2635         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2636                 return -EOPNOTSUPP;
2637
2638         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2639                 return -EOPNOTSUPP;
2640
2641         if (enabled == sdata->u.mgd.powersave &&
2642             timeout == local->dynamic_ps_forced_timeout)
2643                 return 0;
2644
2645         sdata->u.mgd.powersave = enabled;
2646         local->dynamic_ps_forced_timeout = timeout;
2647
2648         /* no change, but if automatic follow powersave */
2649         sdata_lock(sdata);
2650         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2651         sdata_unlock(sdata);
2652
2653         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2654                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2655
2656         ieee80211_recalc_ps(local);
2657         ieee80211_recalc_ps_vif(sdata);
2658
2659         return 0;
2660 }
2661
2662 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2663                                          struct net_device *dev,
2664                                          s32 rssi_thold, u32 rssi_hyst)
2665 {
2666         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2667         struct ieee80211_vif *vif = &sdata->vif;
2668         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2669
2670         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2671             rssi_hyst == bss_conf->cqm_rssi_hyst)
2672                 return 0;
2673
2674         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2675             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2676                 return -EOPNOTSUPP;
2677
2678         bss_conf->cqm_rssi_thold = rssi_thold;
2679         bss_conf->cqm_rssi_hyst = rssi_hyst;
2680         bss_conf->cqm_rssi_low = 0;
2681         bss_conf->cqm_rssi_high = 0;
2682         sdata->u.mgd.last_cqm_event_signal = 0;
2683
2684         /* tell the driver upon association, unless already associated */
2685         if (sdata->u.mgd.associated &&
2686             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2687                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2688
2689         return 0;
2690 }
2691
2692 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2693                                                struct net_device *dev,
2694                                                s32 rssi_low, s32 rssi_high)
2695 {
2696         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2697         struct ieee80211_vif *vif = &sdata->vif;
2698         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2699
2700         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2701                 return -EOPNOTSUPP;
2702
2703         bss_conf->cqm_rssi_low = rssi_low;
2704         bss_conf->cqm_rssi_high = rssi_high;
2705         bss_conf->cqm_rssi_thold = 0;
2706         bss_conf->cqm_rssi_hyst = 0;
2707         sdata->u.mgd.last_cqm_event_signal = 0;
2708
2709         /* tell the driver upon association, unless already associated */
2710         if (sdata->u.mgd.associated &&
2711             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2712                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2713
2714         return 0;
2715 }
2716
2717 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2718                                       struct net_device *dev,
2719                                       const u8 *addr,
2720                                       const struct cfg80211_bitrate_mask *mask)
2721 {
2722         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2723         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2724         int i, ret;
2725
2726         if (!ieee80211_sdata_running(sdata))
2727                 return -ENETDOWN;
2728
2729         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2730                 ret = drv_set_bitrate_mask(local, sdata, mask);
2731                 if (ret)
2732                         return ret;
2733         }
2734
2735         /*
2736          * If active validate the setting and reject it if it doesn't leave
2737          * at least one basic rate usable, since we really have to be able
2738          * to send something, and if we're an AP we have to be able to do
2739          * so at a basic rate so that all clients can receive it.
2740          */
2741         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2742             sdata->vif.bss_conf.chandef.chan) {
2743                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2744                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2745
2746                 if (!(mask->control[band].legacy & basic_rates))
2747                         return -EINVAL;
2748         }
2749
2750         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2751                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2752                 int j;
2753
2754                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2755                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2756                        sizeof(mask->control[i].ht_mcs));
2757                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2758                        mask->control[i].vht_mcs,
2759                        sizeof(mask->control[i].vht_mcs));
2760
2761                 sdata->rc_has_mcs_mask[i] = false;
2762                 sdata->rc_has_vht_mcs_mask[i] = false;
2763                 if (!sband)
2764                         continue;
2765
2766                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2767                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2768                                 sdata->rc_has_mcs_mask[i] = true;
2769                                 break;
2770                         }
2771                 }
2772
2773                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2774                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2775                                 sdata->rc_has_vht_mcs_mask[i] = true;
2776                                 break;
2777                         }
2778                 }
2779         }
2780
2781         return 0;
2782 }
2783
2784 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2785                                            struct net_device *dev,
2786                                            struct cfg80211_chan_def *chandef,
2787                                            u32 cac_time_ms)
2788 {
2789         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2790         struct ieee80211_local *local = sdata->local;
2791         int err;
2792
2793         mutex_lock(&local->mtx);
2794         if (!list_empty(&local->roc_list) || local->scanning) {
2795                 err = -EBUSY;
2796                 goto out_unlock;
2797         }
2798
2799         /* whatever, but channel contexts should not complain about that one */
2800         sdata->smps_mode = IEEE80211_SMPS_OFF;
2801         sdata->needed_rx_chains = local->rx_chains;
2802
2803         err = ieee80211_vif_use_channel(sdata, chandef,
2804                                         IEEE80211_CHANCTX_SHARED);
2805         if (err)
2806                 goto out_unlock;
2807
2808         ieee80211_queue_delayed_work(&sdata->local->hw,
2809                                      &sdata->dfs_cac_timer_work,
2810                                      msecs_to_jiffies(cac_time_ms));
2811
2812  out_unlock:
2813         mutex_unlock(&local->mtx);
2814         return err;
2815 }
2816
2817 static struct cfg80211_beacon_data *
2818 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2819 {
2820         struct cfg80211_beacon_data *new_beacon;
2821         u8 *pos;
2822         int len;
2823
2824         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2825               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2826               beacon->probe_resp_len;
2827
2828         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2829         if (!new_beacon)
2830                 return NULL;
2831
2832         pos = (u8 *)(new_beacon + 1);
2833         if (beacon->head_len) {
2834                 new_beacon->head_len = beacon->head_len;
2835                 new_beacon->head = pos;
2836                 memcpy(pos, beacon->head, beacon->head_len);
2837                 pos += beacon->head_len;
2838         }
2839         if (beacon->tail_len) {
2840                 new_beacon->tail_len = beacon->tail_len;
2841                 new_beacon->tail = pos;
2842                 memcpy(pos, beacon->tail, beacon->tail_len);
2843                 pos += beacon->tail_len;
2844         }
2845         if (beacon->beacon_ies_len) {
2846                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2847                 new_beacon->beacon_ies = pos;
2848                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2849                 pos += beacon->beacon_ies_len;
2850         }
2851         if (beacon->proberesp_ies_len) {
2852                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2853                 new_beacon->proberesp_ies = pos;
2854                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2855                 pos += beacon->proberesp_ies_len;
2856         }
2857         if (beacon->assocresp_ies_len) {
2858                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2859                 new_beacon->assocresp_ies = pos;
2860                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2861                 pos += beacon->assocresp_ies_len;
2862         }
2863         if (beacon->probe_resp_len) {
2864                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2865                 beacon->probe_resp = pos;
2866                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2867                 pos += beacon->probe_resp_len;
2868         }
2869
2870         return new_beacon;
2871 }
2872
2873 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2874 {
2875         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2876
2877         ieee80211_queue_work(&sdata->local->hw,
2878                              &sdata->csa_finalize_work);
2879 }
2880 EXPORT_SYMBOL(ieee80211_csa_finish);
2881
2882 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2883                                           u32 *changed)
2884 {
2885         int err;
2886
2887         switch (sdata->vif.type) {
2888         case NL80211_IFTYPE_AP:
2889                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2890                                               NULL);
2891                 kfree(sdata->u.ap.next_beacon);
2892                 sdata->u.ap.next_beacon = NULL;
2893
2894                 if (err < 0)
2895                         return err;
2896                 *changed |= err;
2897                 break;
2898         case NL80211_IFTYPE_ADHOC:
2899                 err = ieee80211_ibss_finish_csa(sdata);
2900                 if (err < 0)
2901                         return err;
2902                 *changed |= err;
2903                 break;
2904 #ifdef CONFIG_MAC80211_MESH
2905         case NL80211_IFTYPE_MESH_POINT:
2906                 err = ieee80211_mesh_finish_csa(sdata);
2907                 if (err < 0)
2908                         return err;
2909                 *changed |= err;
2910                 break;
2911 #endif
2912         default:
2913                 WARN_ON(1);
2914                 return -EINVAL;
2915         }
2916
2917         return 0;
2918 }
2919
2920 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2921 {
2922         struct ieee80211_local *local = sdata->local;
2923         u32 changed = 0;
2924         int err;
2925
2926         sdata_assert_lock(sdata);
2927         lockdep_assert_held(&local->mtx);
2928         lockdep_assert_held(&local->chanctx_mtx);
2929
2930         /*
2931          * using reservation isn't immediate as it may be deferred until later
2932          * with multi-vif. once reservation is complete it will re-schedule the
2933          * work with no reserved_chanctx so verify chandef to check if it
2934          * completed successfully
2935          */
2936
2937         if (sdata->reserved_chanctx) {
2938                 /*
2939                  * with multi-vif csa driver may call ieee80211_csa_finish()
2940                  * many times while waiting for other interfaces to use their
2941                  * reservations
2942                  */
2943                 if (sdata->reserved_ready)
2944                         return 0;
2945
2946                 return ieee80211_vif_use_reserved_context(sdata);
2947         }
2948
2949         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2950                                         &sdata->csa_chandef))
2951                 return -EINVAL;
2952
2953         sdata->vif.csa_active = false;
2954
2955         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2956         if (err)
2957                 return err;
2958
2959         ieee80211_bss_info_change_notify(sdata, changed);
2960
2961         if (sdata->csa_block_tx) {
2962                 ieee80211_wake_vif_queues(local, sdata,
2963                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2964                 sdata->csa_block_tx = false;
2965         }
2966
2967         err = drv_post_channel_switch(sdata);
2968         if (err)
2969                 return err;
2970
2971         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2972
2973         return 0;
2974 }
2975
2976 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2977 {
2978         if (__ieee80211_csa_finalize(sdata)) {
2979                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2980                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2981                                     GFP_KERNEL);
2982         }
2983 }
2984
2985 void ieee80211_csa_finalize_work(struct work_struct *work)
2986 {
2987         struct ieee80211_sub_if_data *sdata =
2988                 container_of(work, struct ieee80211_sub_if_data,
2989                              csa_finalize_work);
2990         struct ieee80211_local *local = sdata->local;
2991
2992         sdata_lock(sdata);
2993         mutex_lock(&local->mtx);
2994         mutex_lock(&local->chanctx_mtx);
2995
2996         /* AP might have been stopped while waiting for the lock. */
2997         if (!sdata->vif.csa_active)
2998                 goto unlock;
2999
3000         if (!ieee80211_sdata_running(sdata))
3001                 goto unlock;
3002
3003         ieee80211_csa_finalize(sdata);
3004
3005 unlock:
3006         mutex_unlock(&local->chanctx_mtx);
3007         mutex_unlock(&local->mtx);
3008         sdata_unlock(sdata);
3009 }
3010
3011 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3012                                     struct cfg80211_csa_settings *params,
3013                                     u32 *changed)
3014 {
3015         struct ieee80211_csa_settings csa = {};
3016         int err;
3017
3018         switch (sdata->vif.type) {
3019         case NL80211_IFTYPE_AP:
3020                 sdata->u.ap.next_beacon =
3021                         cfg80211_beacon_dup(&params->beacon_after);
3022                 if (!sdata->u.ap.next_beacon)
3023                         return -ENOMEM;
3024
3025                 /*
3026                  * With a count of 0, we don't have to wait for any
3027                  * TBTT before switching, so complete the CSA
3028                  * immediately.  In theory, with a count == 1 we
3029                  * should delay the switch until just before the next
3030                  * TBTT, but that would complicate things so we switch
3031                  * immediately too.  If we would delay the switch
3032                  * until the next TBTT, we would have to set the probe
3033                  * response here.
3034                  *
3035                  * TODO: A channel switch with count <= 1 without
3036                  * sending a CSA action frame is kind of useless,
3037                  * because the clients won't know we're changing
3038                  * channels.  The action frame must be implemented
3039                  * either here or in the userspace.
3040                  */
3041                 if (params->count <= 1)
3042                         break;
3043
3044                 if ((params->n_counter_offsets_beacon >
3045                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3046                     (params->n_counter_offsets_presp >
3047                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3048                         return -EINVAL;
3049
3050                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3051                 csa.counter_offsets_presp = params->counter_offsets_presp;
3052                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3053                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3054                 csa.count = params->count;
3055
3056                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3057                 if (err < 0) {
3058                         kfree(sdata->u.ap.next_beacon);
3059                         return err;
3060                 }
3061                 *changed |= err;
3062
3063                 break;
3064         case NL80211_IFTYPE_ADHOC:
3065                 if (!sdata->vif.bss_conf.ibss_joined)
3066                         return -EINVAL;
3067
3068                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3069                         return -EINVAL;
3070
3071                 switch (params->chandef.width) {
3072                 case NL80211_CHAN_WIDTH_40:
3073                         if (cfg80211_get_chandef_type(&params->chandef) !=
3074                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3075                                 return -EINVAL;
3076                 case NL80211_CHAN_WIDTH_5:
3077                 case NL80211_CHAN_WIDTH_10:
3078                 case NL80211_CHAN_WIDTH_20_NOHT:
3079                 case NL80211_CHAN_WIDTH_20:
3080                         break;
3081                 default:
3082                         return -EINVAL;
3083                 }
3084
3085                 /* changes into another band are not supported */
3086                 if (sdata->u.ibss.chandef.chan->band !=
3087                     params->chandef.chan->band)
3088                         return -EINVAL;
3089
3090                 /* see comments in the NL80211_IFTYPE_AP block */
3091                 if (params->count > 1) {
3092                         err = ieee80211_ibss_csa_beacon(sdata, params);
3093                         if (err < 0)
3094                                 return err;
3095                         *changed |= err;
3096                 }
3097
3098                 ieee80211_send_action_csa(sdata, params);
3099
3100                 break;
3101 #ifdef CONFIG_MAC80211_MESH
3102         case NL80211_IFTYPE_MESH_POINT: {
3103                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3104
3105                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3106                         return -EINVAL;
3107
3108                 /* changes into another band are not supported */
3109                 if (sdata->vif.bss_conf.chandef.chan->band !=
3110                     params->chandef.chan->band)
3111                         return -EINVAL;
3112
3113                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3114                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3115                         if (!ifmsh->pre_value)
3116                                 ifmsh->pre_value = 1;
3117                         else
3118                                 ifmsh->pre_value++;
3119                 }
3120
3121                 /* see comments in the NL80211_IFTYPE_AP block */
3122                 if (params->count > 1) {
3123                         err = ieee80211_mesh_csa_beacon(sdata, params);
3124                         if (err < 0) {
3125                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3126                                 return err;
3127                         }
3128                         *changed |= err;
3129                 }
3130
3131                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3132                         ieee80211_send_action_csa(sdata, params);
3133
3134                 break;
3135                 }
3136 #endif
3137         default:
3138                 return -EOPNOTSUPP;
3139         }
3140
3141         return 0;
3142 }
3143
3144 static int
3145 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3146                            struct cfg80211_csa_settings *params)
3147 {
3148         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3149         struct ieee80211_local *local = sdata->local;
3150         struct ieee80211_channel_switch ch_switch;
3151         struct ieee80211_chanctx_conf *conf;
3152         struct ieee80211_chanctx *chanctx;
3153         u32 changed = 0;
3154         int err;
3155
3156         sdata_assert_lock(sdata);
3157         lockdep_assert_held(&local->mtx);
3158
3159         if (!list_empty(&local->roc_list) || local->scanning)
3160                 return -EBUSY;
3161
3162         if (sdata->wdev.cac_started)
3163                 return -EBUSY;
3164
3165         if (cfg80211_chandef_identical(&params->chandef,
3166                                        &sdata->vif.bss_conf.chandef))
3167                 return -EINVAL;
3168
3169         /* don't allow another channel switch if one is already active. */
3170         if (sdata->vif.csa_active)
3171                 return -EBUSY;
3172
3173         mutex_lock(&local->chanctx_mtx);
3174         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3175                                          lockdep_is_held(&local->chanctx_mtx));
3176         if (!conf) {
3177                 err = -EBUSY;
3178                 goto out;
3179         }
3180
3181         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3182
3183         ch_switch.timestamp = 0;
3184         ch_switch.device_timestamp = 0;
3185         ch_switch.block_tx = params->block_tx;
3186         ch_switch.chandef = params->chandef;
3187         ch_switch.count = params->count;
3188
3189         err = drv_pre_channel_switch(sdata, &ch_switch);
3190         if (err)
3191                 goto out;
3192
3193         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3194                                             chanctx->mode,
3195                                             params->radar_required);
3196         if (err)
3197                 goto out;
3198
3199         /* if reservation is invalid then this will fail */
3200         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3201         if (err) {
3202                 ieee80211_vif_unreserve_chanctx(sdata);
3203                 goto out;
3204         }
3205
3206         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3207         if (err) {
3208                 ieee80211_vif_unreserve_chanctx(sdata);
3209                 goto out;
3210         }
3211
3212         sdata->csa_chandef = params->chandef;
3213         sdata->csa_block_tx = params->block_tx;
3214         sdata->vif.csa_active = true;
3215
3216         if (sdata->csa_block_tx)
3217                 ieee80211_stop_vif_queues(local, sdata,
3218                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3219
3220         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3221                                           params->count);
3222
3223         if (changed) {
3224                 ieee80211_bss_info_change_notify(sdata, changed);
3225                 drv_channel_switch_beacon(sdata, &params->chandef);
3226         } else {
3227                 /* if the beacon didn't change, we can finalize immediately */
3228                 ieee80211_csa_finalize(sdata);
3229         }
3230
3231 out:
3232         mutex_unlock(&local->chanctx_mtx);
3233         return err;
3234 }
3235
3236 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3237                              struct cfg80211_csa_settings *params)
3238 {
3239         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3240         struct ieee80211_local *local = sdata->local;
3241         int err;
3242
3243         mutex_lock(&local->mtx);
3244         err = __ieee80211_channel_switch(wiphy, dev, params);
3245         mutex_unlock(&local->mtx);
3246
3247         return err;
3248 }
3249
3250 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3251 {
3252         lockdep_assert_held(&local->mtx);
3253
3254         local->roc_cookie_counter++;
3255
3256         /* wow, you wrapped 64 bits ... more likely a bug */
3257         if (WARN_ON(local->roc_cookie_counter == 0))
3258                 local->roc_cookie_counter++;
3259
3260         return local->roc_cookie_counter;
3261 }
3262
3263 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3264                              u64 *cookie, gfp_t gfp)
3265 {
3266         unsigned long spin_flags;
3267         struct sk_buff *ack_skb;
3268         int id;
3269
3270         ack_skb = skb_copy(skb, gfp);
3271         if (!ack_skb)
3272                 return -ENOMEM;
3273
3274         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3275         id = idr_alloc(&local->ack_status_frames, ack_skb,
3276                        1, 0x10000, GFP_ATOMIC);
3277         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3278
3279         if (id < 0) {
3280                 kfree_skb(ack_skb);
3281                 return -ENOMEM;
3282         }
3283
3284         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3285
3286         *cookie = ieee80211_mgmt_tx_cookie(local);
3287         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3288
3289         return 0;
3290 }
3291
3292 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3293                                           struct wireless_dev *wdev,
3294                                           u16 frame_type, bool reg)
3295 {
3296         struct ieee80211_local *local = wiphy_priv(wiphy);
3297         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3298
3299         switch (frame_type) {
3300         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3301                 if (reg) {
3302                         local->probe_req_reg++;
3303                         sdata->vif.probe_req_reg++;
3304                 } else {
3305                         if (local->probe_req_reg)
3306                                 local->probe_req_reg--;
3307
3308                         if (sdata->vif.probe_req_reg)
3309                                 sdata->vif.probe_req_reg--;
3310                 }
3311
3312                 if (!local->open_count)
3313                         break;
3314
3315                 if (sdata->vif.probe_req_reg == 1)
3316                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3317                                                 FIF_PROBE_REQ);
3318                 else if (sdata->vif.probe_req_reg == 0)
3319                         drv_config_iface_filter(local, sdata, 0,
3320                                                 FIF_PROBE_REQ);
3321
3322                 ieee80211_configure_filter(local);
3323                 break;
3324         default:
3325                 break;
3326         }
3327 }
3328
3329 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3330 {
3331         struct ieee80211_local *local = wiphy_priv(wiphy);
3332
3333         if (local->started)
3334                 return -EOPNOTSUPP;
3335
3336         return drv_set_antenna(local, tx_ant, rx_ant);
3337 }
3338
3339 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3340 {
3341         struct ieee80211_local *local = wiphy_priv(wiphy);
3342
3343         return drv_get_antenna(local, tx_ant, rx_ant);
3344 }
3345
3346 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3347                                     struct net_device *dev,
3348                                     struct cfg80211_gtk_rekey_data *data)
3349 {
3350         struct ieee80211_local *local = wiphy_priv(wiphy);
3351         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3352
3353         if (!local->ops->set_rekey_data)
3354                 return -EOPNOTSUPP;
3355
3356         drv_set_rekey_data(local, sdata, data);
3357
3358         return 0;
3359 }
3360
3361 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3362                                   const u8 *peer, u64 *cookie)
3363 {
3364         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3365         struct ieee80211_local *local = sdata->local;
3366         struct ieee80211_qos_hdr *nullfunc;
3367         struct sk_buff *skb;
3368         int size = sizeof(*nullfunc);
3369         __le16 fc;
3370         bool qos;
3371         struct ieee80211_tx_info *info;
3372         struct sta_info *sta;
3373         struct ieee80211_chanctx_conf *chanctx_conf;
3374         enum nl80211_band band;
3375         int ret;
3376
3377         /* the lock is needed to assign the cookie later */
3378         mutex_lock(&local->mtx);
3379
3380         rcu_read_lock();
3381         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3382         if (WARN_ON(!chanctx_conf)) {
3383                 ret = -EINVAL;
3384                 goto unlock;
3385         }
3386         band = chanctx_conf->def.chan->band;
3387         sta = sta_info_get_bss(sdata, peer);
3388         if (sta) {
3389                 qos = sta->sta.wme;
3390         } else {
3391                 ret = -ENOLINK;
3392                 goto unlock;
3393         }
3394
3395         if (qos) {
3396                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3397                                  IEEE80211_STYPE_QOS_NULLFUNC |
3398                                  IEEE80211_FCTL_FROMDS);
3399         } else {
3400                 size -= 2;
3401                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3402                                  IEEE80211_STYPE_NULLFUNC |
3403                                  IEEE80211_FCTL_FROMDS);
3404         }
3405
3406         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3407         if (!skb) {
3408                 ret = -ENOMEM;
3409                 goto unlock;
3410         }
3411
3412         skb->dev = dev;
3413
3414         skb_reserve(skb, local->hw.extra_tx_headroom);
3415
3416         nullfunc = (void *) skb_put(skb, size);
3417         nullfunc->frame_control = fc;
3418         nullfunc->duration_id = 0;
3419         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3420         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3421         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3422         nullfunc->seq_ctrl = 0;
3423
3424         info = IEEE80211_SKB_CB(skb);
3425
3426         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3427                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3428         info->band = band;
3429
3430         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3431         skb->priority = 7;
3432         if (qos)
3433                 nullfunc->qos_ctrl = cpu_to_le16(7);
3434
3435         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3436         if (ret) {
3437                 kfree_skb(skb);
3438                 goto unlock;
3439         }
3440
3441         local_bh_disable();
3442         ieee80211_xmit(sdata, sta, skb);
3443         local_bh_enable();
3444
3445         ret = 0;
3446 unlock:
3447         rcu_read_unlock();
3448         mutex_unlock(&local->mtx);
3449
3450         return ret;
3451 }
3452
3453 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3454                                      struct wireless_dev *wdev,
3455                                      struct cfg80211_chan_def *chandef)
3456 {
3457         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3458         struct ieee80211_local *local = wiphy_priv(wiphy);
3459         struct ieee80211_chanctx_conf *chanctx_conf;
3460         int ret = -ENODATA;
3461
3462         rcu_read_lock();
3463         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3464         if (chanctx_conf) {
3465                 *chandef = sdata->vif.bss_conf.chandef;
3466                 ret = 0;
3467         } else if (local->open_count > 0 &&
3468                    local->open_count == local->monitors &&
3469                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3470                 if (local->use_chanctx)
3471                         *chandef = local->monitor_chandef;
3472                 else
3473                         *chandef = local->_oper_chandef;
3474                 ret = 0;
3475         }
3476         rcu_read_unlock();
3477
3478         return ret;
3479 }
3480
3481 #ifdef CONFIG_PM
3482 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3483 {
3484         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3485 }
3486 #endif
3487
3488 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3489                                  struct net_device *dev,
3490                                  struct cfg80211_qos_map *qos_map)
3491 {
3492         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3493         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3494
3495         if (qos_map) {
3496                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3497                 if (!new_qos_map)
3498                         return -ENOMEM;
3499                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3500         } else {
3501                 /* A NULL qos_map was passed to disable QoS mapping */
3502                 new_qos_map = NULL;
3503         }
3504
3505         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3506         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3507         if (old_qos_map)
3508                 kfree_rcu(old_qos_map, rcu_head);
3509
3510         return 0;
3511 }
3512
3513 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3514                                       struct net_device *dev,
3515                                       struct cfg80211_chan_def *chandef)
3516 {
3517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3518         int ret;
3519         u32 changed = 0;
3520
3521         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3522         if (ret == 0)
3523                 ieee80211_bss_info_change_notify(sdata, changed);
3524
3525         return ret;
3526 }
3527
3528 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3529                                u8 tsid, const u8 *peer, u8 up,
3530                                u16 admitted_time)
3531 {
3532         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3533         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3534         int ac = ieee802_1d_to_ac[up];
3535
3536         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3537                 return -EOPNOTSUPP;
3538
3539         if (!(sdata->wmm_acm & BIT(up)))
3540                 return -EINVAL;
3541
3542         if (ifmgd->tx_tspec[ac].admitted_time)
3543                 return -EBUSY;
3544
3545         if (admitted_time) {
3546                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3547                 ifmgd->tx_tspec[ac].tsid = tsid;
3548                 ifmgd->tx_tspec[ac].up = up;
3549         }
3550
3551         return 0;
3552 }
3553
3554 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3555                                u8 tsid, const u8 *peer)
3556 {
3557         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3558         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3559         struct ieee80211_local *local = wiphy_priv(wiphy);
3560         int ac;
3561
3562         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3563                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3564
3565                 /* skip unused entries */
3566                 if (!tx_tspec->admitted_time)
3567                         continue;
3568
3569                 if (tx_tspec->tsid != tsid)
3570                         continue;
3571
3572                 /* due to this new packets will be reassigned to non-ACM ACs */
3573                 tx_tspec->up = -1;
3574
3575                 /* Make sure that all packets have been sent to avoid to
3576                  * restore the QoS params on packets that are still on the
3577                  * queues.
3578                  */
3579                 synchronize_net();
3580                 ieee80211_flush_queues(local, sdata, false);
3581
3582                 /* restore the normal QoS parameters
3583                  * (unconditionally to avoid races)
3584                  */
3585                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3586                 tx_tspec->downgraded = false;
3587                 ieee80211_sta_handle_tspec_ac_params(sdata);
3588
3589                 /* finally clear all the data */
3590                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3591
3592                 return 0;
3593         }
3594
3595         return -ENOENT;
3596 }
3597
3598 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3599                                    u8 inst_id,
3600                                    enum nl80211_nan_func_term_reason reason,
3601                                    gfp_t gfp)
3602 {
3603         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3604         struct cfg80211_nan_func *func;
3605         u64 cookie;
3606
3607         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3608                 return;
3609
3610         spin_lock_bh(&sdata->u.nan.func_lock);
3611
3612         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3613         if (WARN_ON(!func)) {
3614                 spin_unlock_bh(&sdata->u.nan.func_lock);
3615                 return;
3616         }
3617
3618         cookie = func->cookie;
3619         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3620
3621         spin_unlock_bh(&sdata->u.nan.func_lock);
3622
3623         cfg80211_free_nan_func(func);
3624
3625         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3626                                      reason, cookie, gfp);
3627 }
3628 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3629
3630 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3631                               struct cfg80211_nan_match_params *match,
3632                               gfp_t gfp)
3633 {
3634         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3635         struct cfg80211_nan_func *func;
3636
3637         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3638                 return;
3639
3640         spin_lock_bh(&sdata->u.nan.func_lock);
3641
3642         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3643         if (WARN_ON(!func)) {
3644                 spin_unlock_bh(&sdata->u.nan.func_lock);
3645                 return;
3646         }
3647         match->cookie = func->cookie;
3648
3649         spin_unlock_bh(&sdata->u.nan.func_lock);
3650
3651         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3652 }
3653 EXPORT_SYMBOL(ieee80211_nan_func_match);
3654
3655 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3656                                               struct net_device *dev,
3657                                               const bool enabled)
3658 {
3659         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3660
3661         sdata->u.ap.multicast_to_unicast = enabled;
3662
3663         return 0;
3664 }
3665
3666 const struct cfg80211_ops mac80211_config_ops = {
3667         .add_virtual_intf = ieee80211_add_iface,
3668         .del_virtual_intf = ieee80211_del_iface,
3669         .change_virtual_intf = ieee80211_change_iface,
3670         .start_p2p_device = ieee80211_start_p2p_device,
3671         .stop_p2p_device = ieee80211_stop_p2p_device,
3672         .add_key = ieee80211_add_key,
3673         .del_key = ieee80211_del_key,
3674         .get_key = ieee80211_get_key,
3675         .set_default_key = ieee80211_config_default_key,
3676         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3677         .start_ap = ieee80211_start_ap,
3678         .change_beacon = ieee80211_change_beacon,
3679         .stop_ap = ieee80211_stop_ap,
3680         .add_station = ieee80211_add_station,
3681         .del_station = ieee80211_del_station,
3682         .change_station = ieee80211_change_station,
3683         .get_station = ieee80211_get_station,
3684         .dump_station = ieee80211_dump_station,
3685         .dump_survey = ieee80211_dump_survey,
3686 #ifdef CONFIG_MAC80211_MESH
3687         .add_mpath = ieee80211_add_mpath,
3688         .del_mpath = ieee80211_del_mpath,
3689         .change_mpath = ieee80211_change_mpath,
3690         .get_mpath = ieee80211_get_mpath,
3691         .dump_mpath = ieee80211_dump_mpath,
3692         .get_mpp = ieee80211_get_mpp,
3693         .dump_mpp = ieee80211_dump_mpp,
3694         .update_mesh_config = ieee80211_update_mesh_config,
3695         .get_mesh_config = ieee80211_get_mesh_config,
3696         .join_mesh = ieee80211_join_mesh,
3697         .leave_mesh = ieee80211_leave_mesh,
3698 #endif
3699         .join_ocb = ieee80211_join_ocb,
3700         .leave_ocb = ieee80211_leave_ocb,
3701         .change_bss = ieee80211_change_bss,
3702         .set_txq_params = ieee80211_set_txq_params,
3703         .set_monitor_channel = ieee80211_set_monitor_channel,
3704         .suspend = ieee80211_suspend,
3705         .resume = ieee80211_resume,
3706         .scan = ieee80211_scan,
3707         .abort_scan = ieee80211_abort_scan,
3708         .sched_scan_start = ieee80211_sched_scan_start,
3709         .sched_scan_stop = ieee80211_sched_scan_stop,
3710         .auth = ieee80211_auth,
3711         .assoc = ieee80211_assoc,
3712         .deauth = ieee80211_deauth,
3713         .disassoc = ieee80211_disassoc,
3714         .join_ibss = ieee80211_join_ibss,
3715         .leave_ibss = ieee80211_leave_ibss,
3716         .set_mcast_rate = ieee80211_set_mcast_rate,
3717         .set_wiphy_params = ieee80211_set_wiphy_params,
3718         .set_tx_power = ieee80211_set_tx_power,
3719         .get_tx_power = ieee80211_get_tx_power,
3720         .set_wds_peer = ieee80211_set_wds_peer,
3721         .rfkill_poll = ieee80211_rfkill_poll,
3722         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3723         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3724         .set_power_mgmt = ieee80211_set_power_mgmt,
3725         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3726         .remain_on_channel = ieee80211_remain_on_channel,
3727         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3728         .mgmt_tx = ieee80211_mgmt_tx,
3729         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3730         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3731         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3732         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3733         .set_antenna = ieee80211_set_antenna,
3734         .get_antenna = ieee80211_get_antenna,
3735         .set_rekey_data = ieee80211_set_rekey_data,
3736         .tdls_oper = ieee80211_tdls_oper,
3737         .tdls_mgmt = ieee80211_tdls_mgmt,
3738         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3739         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3740         .probe_client = ieee80211_probe_client,
3741         .set_noack_map = ieee80211_set_noack_map,
3742 #ifdef CONFIG_PM
3743         .set_wakeup = ieee80211_set_wakeup,
3744 #endif
3745         .get_channel = ieee80211_cfg_get_channel,
3746         .start_radar_detection = ieee80211_start_radar_detection,
3747         .channel_switch = ieee80211_channel_switch,
3748         .set_qos_map = ieee80211_set_qos_map,
3749         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3750         .add_tx_ts = ieee80211_add_tx_ts,
3751         .del_tx_ts = ieee80211_del_tx_ts,
3752         .start_nan = ieee80211_start_nan,
3753         .stop_nan = ieee80211_stop_nan,
3754         .nan_change_conf = ieee80211_nan_change_conf,
3755         .add_nan_func = ieee80211_add_nan_func,
3756         .del_nan_func = ieee80211_del_nan_func,
3757         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3758 };