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 * 7 * This file is GPLv2 as found in COPYING. 8 */ 9 10 #include <linux/ieee80211.h> 11 #include <linux/nl80211.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/slab.h> 14 #include <net/net_namespace.h> 15 #include <linux/rcupdate.h> 16 #include <linux/if_ether.h> 17 #include <net/cfg80211.h> 18 #include "ieee80211_i.h" 19 #include "driver-ops.h" 20 #include "cfg.h" 21 #include "rate.h" 22 #include "mesh.h" 23 #include "wme.h" 24 25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 26 const char *name, 27 unsigned char name_assign_type, 28 enum nl80211_iftype type, 29 u32 *flags, 30 struct vif_params *params) 31 { 32 struct ieee80211_local *local = wiphy_priv(wiphy); 33 struct wireless_dev *wdev; 34 struct ieee80211_sub_if_data *sdata; 35 int err; 36 37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 38 if (err) 39 return ERR_PTR(err); 40 41 if (type == NL80211_IFTYPE_MONITOR && flags) { 42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 43 sdata->u.mntr_flags = *flags; 44 } 45 46 return wdev; 47 } 48 49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 50 { 51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 52 53 return 0; 54 } 55 56 static int ieee80211_change_iface(struct wiphy *wiphy, 57 struct net_device *dev, 58 enum nl80211_iftype type, u32 *flags, 59 struct vif_params *params) 60 { 61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 62 int ret; 63 64 ret = ieee80211_if_change_type(sdata, type); 65 if (ret) 66 return ret; 67 68 if (type == NL80211_IFTYPE_AP_VLAN && 69 params && params->use_4addr == 0) 70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 71 else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 75 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 76 struct ieee80211_local *local = sdata->local; 77 78 if (ieee80211_sdata_running(sdata)) { 79 u32 mask = MONITOR_FLAG_COOK_FRAMES | 80 MONITOR_FLAG_ACTIVE; 81 82 /* 83 * Prohibit MONITOR_FLAG_COOK_FRAMES and 84 * MONITOR_FLAG_ACTIVE to be changed while the 85 * interface is up. 86 * Else we would need to add a lot of cruft 87 * to update everything: 88 * cooked_mntrs, monitor and all fif_* counters 89 * reconfigure hardware 90 */ 91 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 92 return -EBUSY; 93 94 ieee80211_adjust_monitor_flags(sdata, -1); 95 sdata->u.mntr_flags = *flags; 96 ieee80211_adjust_monitor_flags(sdata, 1); 97 98 ieee80211_configure_filter(local); 99 } else { 100 /* 101 * Because the interface is down, ieee80211_do_stop 102 * and ieee80211_do_open take care of "everything" 103 * mentioned in the comment above. 104 */ 105 sdata->u.mntr_flags = *flags; 106 } 107 } 108 109 return 0; 110 } 111 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 113 struct wireless_dev *wdev) 114 { 115 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 116 int ret; 117 118 mutex_lock(&sdata->local->chanctx_mtx); 119 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 120 mutex_unlock(&sdata->local->chanctx_mtx); 121 if (ret < 0) 122 return ret; 123 124 return ieee80211_do_open(wdev, true); 125 } 126 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 128 struct wireless_dev *wdev) 129 { 130 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 131 } 132 133 static int ieee80211_set_noack_map(struct wiphy *wiphy, 134 struct net_device *dev, 135 u16 noack_map) 136 { 137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 138 139 sdata->noack_map = noack_map; 140 141 ieee80211_check_fast_xmit_iface(sdata); 142 143 return 0; 144 } 145 146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 147 u8 key_idx, bool pairwise, const u8 *mac_addr, 148 struct key_params *params) 149 { 150 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 151 struct ieee80211_local *local = sdata->local; 152 struct sta_info *sta = NULL; 153 const struct ieee80211_cipher_scheme *cs = NULL; 154 struct ieee80211_key *key; 155 int err; 156 157 if (!ieee80211_sdata_running(sdata)) 158 return -ENETDOWN; 159 160 /* reject WEP and TKIP keys if WEP failed to initialize */ 161 switch (params->cipher) { 162 case WLAN_CIPHER_SUITE_WEP40: 163 case WLAN_CIPHER_SUITE_TKIP: 164 case WLAN_CIPHER_SUITE_WEP104: 165 if (IS_ERR(local->wep_tx_tfm)) 166 return -EINVAL; 167 break; 168 case WLAN_CIPHER_SUITE_CCMP: 169 case WLAN_CIPHER_SUITE_CCMP_256: 170 case WLAN_CIPHER_SUITE_AES_CMAC: 171 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 174 case WLAN_CIPHER_SUITE_GCMP: 175 case WLAN_CIPHER_SUITE_GCMP_256: 176 break; 177 default: 178 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 179 break; 180 } 181 182 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 183 params->key, params->seq_len, params->seq, 184 cs); 185 if (IS_ERR(key)) 186 return PTR_ERR(key); 187 188 if (pairwise) 189 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 190 191 mutex_lock(&local->sta_mtx); 192 193 if (mac_addr) { 194 if (ieee80211_vif_is_mesh(&sdata->vif)) 195 sta = sta_info_get(sdata, mac_addr); 196 else 197 sta = sta_info_get_bss(sdata, mac_addr); 198 /* 199 * The ASSOC test makes sure the driver is ready to 200 * receive the key. When wpa_supplicant has roamed 201 * using FT, it attempts to set the key before 202 * association has completed, this rejects that attempt 203 * so it will set the key again after association. 204 * 205 * TODO: accept the key if we have a station entry and 206 * add it to the device after the station. 207 */ 208 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 209 ieee80211_key_free_unused(key); 210 err = -ENOENT; 211 goto out_unlock; 212 } 213 } 214 215 switch (sdata->vif.type) { 216 case NL80211_IFTYPE_STATION: 217 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 218 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 219 break; 220 case NL80211_IFTYPE_AP: 221 case NL80211_IFTYPE_AP_VLAN: 222 /* Keys without a station are used for TX only */ 223 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 224 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 225 break; 226 case NL80211_IFTYPE_ADHOC: 227 /* no MFP (yet) */ 228 break; 229 case NL80211_IFTYPE_MESH_POINT: 230 #ifdef CONFIG_MAC80211_MESH 231 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 232 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 233 break; 234 #endif 235 case NL80211_IFTYPE_WDS: 236 case NL80211_IFTYPE_MONITOR: 237 case NL80211_IFTYPE_P2P_DEVICE: 238 case NL80211_IFTYPE_UNSPECIFIED: 239 case NUM_NL80211_IFTYPES: 240 case NL80211_IFTYPE_P2P_CLIENT: 241 case NL80211_IFTYPE_P2P_GO: 242 case NL80211_IFTYPE_OCB: 243 /* shouldn't happen */ 244 WARN_ON_ONCE(1); 245 break; 246 } 247 248 if (sta) 249 sta->cipher_scheme = cs; 250 251 err = ieee80211_key_link(key, sdata, sta); 252 253 out_unlock: 254 mutex_unlock(&local->sta_mtx); 255 256 return err; 257 } 258 259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 260 u8 key_idx, bool pairwise, const u8 *mac_addr) 261 { 262 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 263 struct ieee80211_local *local = sdata->local; 264 struct sta_info *sta; 265 struct ieee80211_key *key = NULL; 266 int ret; 267 268 mutex_lock(&local->sta_mtx); 269 mutex_lock(&local->key_mtx); 270 271 if (mac_addr) { 272 ret = -ENOENT; 273 274 sta = sta_info_get_bss(sdata, mac_addr); 275 if (!sta) 276 goto out_unlock; 277 278 if (pairwise) 279 key = key_mtx_dereference(local, sta->ptk[key_idx]); 280 else 281 key = key_mtx_dereference(local, sta->gtk[key_idx]); 282 } else 283 key = key_mtx_dereference(local, sdata->keys[key_idx]); 284 285 if (!key) { 286 ret = -ENOENT; 287 goto out_unlock; 288 } 289 290 ieee80211_key_free(key, true); 291 292 ret = 0; 293 out_unlock: 294 mutex_unlock(&local->key_mtx); 295 mutex_unlock(&local->sta_mtx); 296 297 return ret; 298 } 299 300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 301 u8 key_idx, bool pairwise, const u8 *mac_addr, 302 void *cookie, 303 void (*callback)(void *cookie, 304 struct key_params *params)) 305 { 306 struct ieee80211_sub_if_data *sdata; 307 struct sta_info *sta = NULL; 308 u8 seq[6] = {0}; 309 struct key_params params; 310 struct ieee80211_key *key = NULL; 311 u64 pn64; 312 u32 iv32; 313 u16 iv16; 314 int err = -ENOENT; 315 struct ieee80211_key_seq kseq = {}; 316 317 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 318 319 rcu_read_lock(); 320 321 if (mac_addr) { 322 sta = sta_info_get_bss(sdata, mac_addr); 323 if (!sta) 324 goto out; 325 326 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 327 key = rcu_dereference(sta->ptk[key_idx]); 328 else if (!pairwise && 329 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 330 key = rcu_dereference(sta->gtk[key_idx]); 331 } else 332 key = rcu_dereference(sdata->keys[key_idx]); 333 334 if (!key) 335 goto out; 336 337 memset(¶ms, 0, sizeof(params)); 338 339 params.cipher = key->conf.cipher; 340 341 switch (key->conf.cipher) { 342 case WLAN_CIPHER_SUITE_TKIP: 343 iv32 = key->u.tkip.tx.iv32; 344 iv16 = key->u.tkip.tx.iv16; 345 346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 348 drv_get_key_seq(sdata->local, key, &kseq); 349 iv32 = kseq.tkip.iv32; 350 iv16 = kseq.tkip.iv16; 351 } 352 353 seq[0] = iv16 & 0xff; 354 seq[1] = (iv16 >> 8) & 0xff; 355 seq[2] = iv32 & 0xff; 356 seq[3] = (iv32 >> 8) & 0xff; 357 seq[4] = (iv32 >> 16) & 0xff; 358 seq[5] = (iv32 >> 24) & 0xff; 359 params.seq = seq; 360 params.seq_len = 6; 361 break; 362 case WLAN_CIPHER_SUITE_CCMP: 363 case WLAN_CIPHER_SUITE_CCMP_256: 364 case WLAN_CIPHER_SUITE_AES_CMAC: 365 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 367 offsetof(typeof(kseq), aes_cmac)); 368 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 369 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 371 offsetof(typeof(kseq), aes_gmac)); 372 case WLAN_CIPHER_SUITE_GCMP: 373 case WLAN_CIPHER_SUITE_GCMP_256: 374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 375 offsetof(typeof(kseq), gcmp)); 376 377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 379 drv_get_key_seq(sdata->local, key, &kseq); 380 memcpy(seq, kseq.ccmp.pn, 6); 381 } else { 382 pn64 = atomic64_read(&key->conf.tx_pn); 383 seq[0] = pn64; 384 seq[1] = pn64 >> 8; 385 seq[2] = pn64 >> 16; 386 seq[3] = pn64 >> 24; 387 seq[4] = pn64 >> 32; 388 seq[5] = pn64 >> 40; 389 } 390 params.seq = seq; 391 params.seq_len = 6; 392 break; 393 default: 394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 395 break; 396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 397 break; 398 drv_get_key_seq(sdata->local, key, &kseq); 399 params.seq = kseq.hw.seq; 400 params.seq_len = kseq.hw.seq_len; 401 break; 402 } 403 404 params.key = key->conf.key; 405 params.key_len = key->conf.keylen; 406 407 callback(cookie, ¶ms); 408 err = 0; 409 410 out: 411 rcu_read_unlock(); 412 return err; 413 } 414 415 static int ieee80211_config_default_key(struct wiphy *wiphy, 416 struct net_device *dev, 417 u8 key_idx, bool uni, 418 bool multi) 419 { 420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 421 422 ieee80211_set_default_key(sdata, key_idx, uni, multi); 423 424 return 0; 425 } 426 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 428 struct net_device *dev, 429 u8 key_idx) 430 { 431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 432 433 ieee80211_set_default_mgmt_key(sdata, key_idx); 434 435 return 0; 436 } 437 438 void sta_set_rate_info_tx(struct sta_info *sta, 439 const struct ieee80211_tx_rate *rate, 440 struct rate_info *rinfo) 441 { 442 rinfo->flags = 0; 443 if (rate->flags & IEEE80211_TX_RC_MCS) { 444 rinfo->flags |= RATE_INFO_FLAGS_MCS; 445 rinfo->mcs = rate->idx; 446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 449 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 450 } else { 451 struct ieee80211_supported_band *sband; 452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 453 u16 brate; 454 455 sband = sta->local->hw.wiphy->bands[ 456 ieee80211_get_sdata_band(sta->sdata)]; 457 brate = sband->bitrates[rate->idx].bitrate; 458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 459 } 460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 461 rinfo->bw = RATE_INFO_BW_40; 462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_80; 464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_160; 466 else 467 rinfo->bw = RATE_INFO_BW_20; 468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 470 } 471 472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 473 { 474 rinfo->flags = 0; 475 476 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 477 rinfo->flags |= RATE_INFO_FLAGS_MCS; 478 rinfo->mcs = sta->last_rx_rate_idx; 479 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 480 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 481 rinfo->nss = sta->last_rx_rate_vht_nss; 482 rinfo->mcs = sta->last_rx_rate_idx; 483 } else { 484 struct ieee80211_supported_band *sband; 485 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 486 u16 brate; 487 488 sband = sta->local->hw.wiphy->bands[ 489 ieee80211_get_sdata_band(sta->sdata)]; 490 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 491 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 492 } 493 494 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 495 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 496 497 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ) 498 rinfo->bw = RATE_INFO_BW_5; 499 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ) 500 rinfo->bw = RATE_INFO_BW_10; 501 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 502 rinfo->bw = RATE_INFO_BW_40; 503 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) 504 rinfo->bw = RATE_INFO_BW_80; 505 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) 506 rinfo->bw = RATE_INFO_BW_160; 507 else 508 rinfo->bw = RATE_INFO_BW_20; 509 } 510 511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 512 int idx, u8 *mac, struct station_info *sinfo) 513 { 514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 515 struct ieee80211_local *local = sdata->local; 516 struct sta_info *sta; 517 int ret = -ENOENT; 518 519 mutex_lock(&local->sta_mtx); 520 521 sta = sta_info_get_by_idx(sdata, idx); 522 if (sta) { 523 ret = 0; 524 memcpy(mac, sta->sta.addr, ETH_ALEN); 525 sta_set_sinfo(sta, sinfo); 526 } 527 528 mutex_unlock(&local->sta_mtx); 529 530 return ret; 531 } 532 533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 534 int idx, struct survey_info *survey) 535 { 536 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 537 538 return drv_get_survey(local, idx, survey); 539 } 540 541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 542 const u8 *mac, struct station_info *sinfo) 543 { 544 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 545 struct ieee80211_local *local = sdata->local; 546 struct sta_info *sta; 547 int ret = -ENOENT; 548 549 mutex_lock(&local->sta_mtx); 550 551 sta = sta_info_get_bss(sdata, mac); 552 if (sta) { 553 ret = 0; 554 sta_set_sinfo(sta, sinfo); 555 } 556 557 mutex_unlock(&local->sta_mtx); 558 559 return ret; 560 } 561 562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 563 struct cfg80211_chan_def *chandef) 564 { 565 struct ieee80211_local *local = wiphy_priv(wiphy); 566 struct ieee80211_sub_if_data *sdata; 567 int ret = 0; 568 569 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 570 return 0; 571 572 mutex_lock(&local->mtx); 573 mutex_lock(&local->iflist_mtx); 574 if (local->use_chanctx) { 575 sdata = rcu_dereference_protected( 576 local->monitor_sdata, 577 lockdep_is_held(&local->iflist_mtx)); 578 if (sdata) { 579 ieee80211_vif_release_channel(sdata); 580 ret = ieee80211_vif_use_channel(sdata, chandef, 581 IEEE80211_CHANCTX_EXCLUSIVE); 582 } 583 } else if (local->open_count == local->monitors) { 584 local->_oper_chandef = *chandef; 585 ieee80211_hw_config(local, 0); 586 } 587 588 if (ret == 0) 589 local->monitor_chandef = *chandef; 590 mutex_unlock(&local->iflist_mtx); 591 mutex_unlock(&local->mtx); 592 593 return ret; 594 } 595 596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 597 const u8 *resp, size_t resp_len, 598 const struct ieee80211_csa_settings *csa) 599 { 600 struct probe_resp *new, *old; 601 602 if (!resp || !resp_len) 603 return 1; 604 605 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 606 607 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 608 if (!new) 609 return -ENOMEM; 610 611 new->len = resp_len; 612 memcpy(new->data, resp, resp_len); 613 614 if (csa) 615 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 616 csa->n_counter_offsets_presp * 617 sizeof(new->csa_counter_offsets[0])); 618 619 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 620 if (old) 621 kfree_rcu(old, rcu_head); 622 623 return 0; 624 } 625 626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 627 struct cfg80211_beacon_data *params, 628 const struct ieee80211_csa_settings *csa) 629 { 630 struct beacon_data *new, *old; 631 int new_head_len, new_tail_len; 632 int size, err; 633 u32 changed = BSS_CHANGED_BEACON; 634 635 old = sdata_dereference(sdata->u.ap.beacon, sdata); 636 637 638 /* Need to have a beacon head if we don't have one yet */ 639 if (!params->head && !old) 640 return -EINVAL; 641 642 /* new or old head? */ 643 if (params->head) 644 new_head_len = params->head_len; 645 else 646 new_head_len = old->head_len; 647 648 /* new or old tail? */ 649 if (params->tail || !old) 650 /* params->tail_len will be zero for !params->tail */ 651 new_tail_len = params->tail_len; 652 else 653 new_tail_len = old->tail_len; 654 655 size = sizeof(*new) + new_head_len + new_tail_len; 656 657 new = kzalloc(size, GFP_KERNEL); 658 if (!new) 659 return -ENOMEM; 660 661 /* start filling the new info now */ 662 663 /* 664 * pointers go into the block we allocated, 665 * memory is | beacon_data | head | tail | 666 */ 667 new->head = ((u8 *) new) + sizeof(*new); 668 new->tail = new->head + new_head_len; 669 new->head_len = new_head_len; 670 new->tail_len = new_tail_len; 671 672 if (csa) { 673 new->csa_current_counter = csa->count; 674 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 675 csa->n_counter_offsets_beacon * 676 sizeof(new->csa_counter_offsets[0])); 677 } 678 679 /* copy in head */ 680 if (params->head) 681 memcpy(new->head, params->head, new_head_len); 682 else 683 memcpy(new->head, old->head, new_head_len); 684 685 /* copy in optional tail */ 686 if (params->tail) 687 memcpy(new->tail, params->tail, new_tail_len); 688 else 689 if (old) 690 memcpy(new->tail, old->tail, new_tail_len); 691 692 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 693 params->probe_resp_len, csa); 694 if (err < 0) 695 return err; 696 if (err == 0) 697 changed |= BSS_CHANGED_AP_PROBE_RESP; 698 699 rcu_assign_pointer(sdata->u.ap.beacon, new); 700 701 if (old) 702 kfree_rcu(old, rcu_head); 703 704 return changed; 705 } 706 707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 708 struct cfg80211_ap_settings *params) 709 { 710 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 711 struct ieee80211_local *local = sdata->local; 712 struct beacon_data *old; 713 struct ieee80211_sub_if_data *vlan; 714 u32 changed = BSS_CHANGED_BEACON_INT | 715 BSS_CHANGED_BEACON_ENABLED | 716 BSS_CHANGED_BEACON | 717 BSS_CHANGED_SSID | 718 BSS_CHANGED_P2P_PS | 719 BSS_CHANGED_TXPOWER; 720 int err; 721 722 old = sdata_dereference(sdata->u.ap.beacon, sdata); 723 if (old) 724 return -EALREADY; 725 726 switch (params->smps_mode) { 727 case NL80211_SMPS_OFF: 728 sdata->smps_mode = IEEE80211_SMPS_OFF; 729 break; 730 case NL80211_SMPS_STATIC: 731 sdata->smps_mode = IEEE80211_SMPS_STATIC; 732 break; 733 case NL80211_SMPS_DYNAMIC: 734 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 735 break; 736 default: 737 return -EINVAL; 738 } 739 sdata->needed_rx_chains = sdata->local->rx_chains; 740 741 mutex_lock(&local->mtx); 742 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 743 IEEE80211_CHANCTX_SHARED); 744 if (!err) 745 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 746 mutex_unlock(&local->mtx); 747 if (err) 748 return err; 749 750 /* 751 * Apply control port protocol, this allows us to 752 * not encrypt dynamic WEP control frames. 753 */ 754 sdata->control_port_protocol = params->crypto.control_port_ethertype; 755 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 756 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 757 ¶ms->crypto, 758 sdata->vif.type); 759 760 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 761 vlan->control_port_protocol = 762 params->crypto.control_port_ethertype; 763 vlan->control_port_no_encrypt = 764 params->crypto.control_port_no_encrypt; 765 vlan->encrypt_headroom = 766 ieee80211_cs_headroom(sdata->local, 767 ¶ms->crypto, 768 vlan->vif.type); 769 } 770 771 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 772 sdata->vif.bss_conf.dtim_period = params->dtim_period; 773 sdata->vif.bss_conf.enable_beacon = true; 774 775 sdata->vif.bss_conf.ssid_len = params->ssid_len; 776 if (params->ssid_len) 777 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 778 params->ssid_len); 779 sdata->vif.bss_conf.hidden_ssid = 780 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 781 782 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 783 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 784 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 785 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 786 if (params->p2p_opp_ps) 787 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 788 IEEE80211_P2P_OPPPS_ENABLE_BIT; 789 790 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 791 if (err < 0) { 792 ieee80211_vif_release_channel(sdata); 793 return err; 794 } 795 changed |= err; 796 797 err = drv_start_ap(sdata->local, sdata); 798 if (err) { 799 old = sdata_dereference(sdata->u.ap.beacon, sdata); 800 801 if (old) 802 kfree_rcu(old, rcu_head); 803 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 804 ieee80211_vif_release_channel(sdata); 805 return err; 806 } 807 808 ieee80211_recalc_dtim(local, sdata); 809 ieee80211_bss_info_change_notify(sdata, changed); 810 811 netif_carrier_on(dev); 812 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 813 netif_carrier_on(vlan->dev); 814 815 return 0; 816 } 817 818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 819 struct cfg80211_beacon_data *params) 820 { 821 struct ieee80211_sub_if_data *sdata; 822 struct beacon_data *old; 823 int err; 824 825 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 826 sdata_assert_lock(sdata); 827 828 /* don't allow changing the beacon while CSA is in place - offset 829 * of channel switch counter may change 830 */ 831 if (sdata->vif.csa_active) 832 return -EBUSY; 833 834 old = sdata_dereference(sdata->u.ap.beacon, sdata); 835 if (!old) 836 return -ENOENT; 837 838 err = ieee80211_assign_beacon(sdata, params, NULL); 839 if (err < 0) 840 return err; 841 ieee80211_bss_info_change_notify(sdata, err); 842 return 0; 843 } 844 845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 846 { 847 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 848 struct ieee80211_sub_if_data *vlan; 849 struct ieee80211_local *local = sdata->local; 850 struct beacon_data *old_beacon; 851 struct probe_resp *old_probe_resp; 852 struct cfg80211_chan_def chandef; 853 854 sdata_assert_lock(sdata); 855 856 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 857 if (!old_beacon) 858 return -ENOENT; 859 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 860 861 /* abort any running channel switch */ 862 mutex_lock(&local->mtx); 863 sdata->vif.csa_active = false; 864 if (sdata->csa_block_tx) { 865 ieee80211_wake_vif_queues(local, sdata, 866 IEEE80211_QUEUE_STOP_REASON_CSA); 867 sdata->csa_block_tx = false; 868 } 869 870 mutex_unlock(&local->mtx); 871 872 kfree(sdata->u.ap.next_beacon); 873 sdata->u.ap.next_beacon = NULL; 874 875 /* turn off carrier for this interface and dependent VLANs */ 876 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 877 netif_carrier_off(vlan->dev); 878 netif_carrier_off(dev); 879 880 /* remove beacon and probe response */ 881 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 882 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 883 kfree_rcu(old_beacon, rcu_head); 884 if (old_probe_resp) 885 kfree_rcu(old_probe_resp, rcu_head); 886 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 887 888 __sta_info_flush(sdata, true); 889 ieee80211_free_keys(sdata, true); 890 891 sdata->vif.bss_conf.enable_beacon = false; 892 sdata->vif.bss_conf.ssid_len = 0; 893 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 894 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 895 896 if (sdata->wdev.cac_started) { 897 chandef = sdata->vif.bss_conf.chandef; 898 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 899 cfg80211_cac_event(sdata->dev, &chandef, 900 NL80211_RADAR_CAC_ABORTED, 901 GFP_KERNEL); 902 } 903 904 drv_stop_ap(sdata->local, sdata); 905 906 /* free all potentially still buffered bcast frames */ 907 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 908 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 909 910 mutex_lock(&local->mtx); 911 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 912 ieee80211_vif_release_channel(sdata); 913 mutex_unlock(&local->mtx); 914 915 return 0; 916 } 917 918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 919 struct iapp_layer2_update { 920 u8 da[ETH_ALEN]; /* broadcast */ 921 u8 sa[ETH_ALEN]; /* STA addr */ 922 __be16 len; /* 6 */ 923 u8 dsap; /* 0 */ 924 u8 ssap; /* 0 */ 925 u8 control; 926 u8 xid_info[3]; 927 } __packed; 928 929 static void ieee80211_send_layer2_update(struct sta_info *sta) 930 { 931 struct iapp_layer2_update *msg; 932 struct sk_buff *skb; 933 934 /* Send Level 2 Update Frame to update forwarding tables in layer 2 935 * bridge devices */ 936 937 skb = dev_alloc_skb(sizeof(*msg)); 938 if (!skb) 939 return; 940 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 941 942 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 943 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 944 945 eth_broadcast_addr(msg->da); 946 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 947 msg->len = htons(6); 948 msg->dsap = 0; 949 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 950 msg->control = 0xaf; /* XID response lsb.1111F101. 951 * F=0 (no poll command; unsolicited frame) */ 952 msg->xid_info[0] = 0x81; /* XID format identifier */ 953 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 954 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 955 956 skb->dev = sta->sdata->dev; 957 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 958 memset(skb->cb, 0, sizeof(skb->cb)); 959 netif_rx_ni(skb); 960 } 961 962 static int sta_apply_auth_flags(struct ieee80211_local *local, 963 struct sta_info *sta, 964 u32 mask, u32 set) 965 { 966 int ret; 967 968 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 969 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 970 !test_sta_flag(sta, WLAN_STA_AUTH)) { 971 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 972 if (ret) 973 return ret; 974 } 975 976 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 977 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 978 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 979 /* 980 * When peer becomes associated, init rate control as 981 * well. Some drivers require rate control initialized 982 * before drv_sta_state() is called. 983 */ 984 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 985 rate_control_rate_init(sta); 986 987 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 988 if (ret) 989 return ret; 990 } 991 992 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 993 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 994 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 995 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 996 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 997 else 998 ret = 0; 999 if (ret) 1000 return ret; 1001 } 1002 1003 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1004 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1005 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1006 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1007 if (ret) 1008 return ret; 1009 } 1010 1011 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1012 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1013 test_sta_flag(sta, WLAN_STA_AUTH)) { 1014 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1015 if (ret) 1016 return ret; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static void sta_apply_mesh_params(struct ieee80211_local *local, 1023 struct sta_info *sta, 1024 struct station_parameters *params) 1025 { 1026 #ifdef CONFIG_MAC80211_MESH 1027 struct ieee80211_sub_if_data *sdata = sta->sdata; 1028 u32 changed = 0; 1029 1030 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1031 switch (params->plink_state) { 1032 case NL80211_PLINK_ESTAB: 1033 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 1034 changed = mesh_plink_inc_estab_count(sdata); 1035 sta->mesh->plink_state = params->plink_state; 1036 1037 ieee80211_mps_sta_status_update(sta); 1038 changed |= ieee80211_mps_set_sta_local_pm(sta, 1039 sdata->u.mesh.mshcfg.power_mode); 1040 break; 1041 case NL80211_PLINK_LISTEN: 1042 case NL80211_PLINK_BLOCKED: 1043 case NL80211_PLINK_OPN_SNT: 1044 case NL80211_PLINK_OPN_RCVD: 1045 case NL80211_PLINK_CNF_RCVD: 1046 case NL80211_PLINK_HOLDING: 1047 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1048 changed = mesh_plink_dec_estab_count(sdata); 1049 sta->mesh->plink_state = params->plink_state; 1050 1051 ieee80211_mps_sta_status_update(sta); 1052 changed |= ieee80211_mps_set_sta_local_pm(sta, 1053 NL80211_MESH_POWER_UNKNOWN); 1054 break; 1055 default: 1056 /* nothing */ 1057 break; 1058 } 1059 } 1060 1061 switch (params->plink_action) { 1062 case NL80211_PLINK_ACTION_NO_ACTION: 1063 /* nothing */ 1064 break; 1065 case NL80211_PLINK_ACTION_OPEN: 1066 changed |= mesh_plink_open(sta); 1067 break; 1068 case NL80211_PLINK_ACTION_BLOCK: 1069 changed |= mesh_plink_block(sta); 1070 break; 1071 } 1072 1073 if (params->local_pm) 1074 changed |= ieee80211_mps_set_sta_local_pm(sta, 1075 params->local_pm); 1076 1077 ieee80211_mbss_info_change_notify(sdata, changed); 1078 #endif 1079 } 1080 1081 static int sta_apply_parameters(struct ieee80211_local *local, 1082 struct sta_info *sta, 1083 struct station_parameters *params) 1084 { 1085 int ret = 0; 1086 struct ieee80211_supported_band *sband; 1087 struct ieee80211_sub_if_data *sdata = sta->sdata; 1088 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1089 u32 mask, set; 1090 1091 sband = local->hw.wiphy->bands[band]; 1092 1093 mask = params->sta_flags_mask; 1094 set = params->sta_flags_set; 1095 1096 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1097 /* 1098 * In mesh mode, ASSOCIATED isn't part of the nl80211 1099 * API but must follow AUTHENTICATED for driver state. 1100 */ 1101 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1102 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1103 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1104 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1105 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1106 /* 1107 * TDLS -- everything follows authorized, but 1108 * only becoming authorized is possible, not 1109 * going back 1110 */ 1111 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1112 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1113 BIT(NL80211_STA_FLAG_ASSOCIATED); 1114 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1115 BIT(NL80211_STA_FLAG_ASSOCIATED); 1116 } 1117 } 1118 1119 if (mask & BIT(NL80211_STA_FLAG_WME) && 1120 local->hw.queues >= IEEE80211_NUM_ACS) 1121 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1122 1123 /* auth flags will be set later for TDLS stations */ 1124 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1125 ret = sta_apply_auth_flags(local, sta, mask, set); 1126 if (ret) 1127 return ret; 1128 } 1129 1130 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1131 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1132 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1133 else 1134 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1135 } 1136 1137 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1138 if (set & BIT(NL80211_STA_FLAG_MFP)) 1139 set_sta_flag(sta, WLAN_STA_MFP); 1140 else 1141 clear_sta_flag(sta, WLAN_STA_MFP); 1142 } 1143 1144 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1145 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1146 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1147 else 1148 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1149 } 1150 1151 /* mark TDLS channel switch support, if the AP allows it */ 1152 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1153 !sdata->u.mgd.tdls_chan_switch_prohibited && 1154 params->ext_capab_len >= 4 && 1155 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1156 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1157 1158 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1159 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1160 params->ext_capab_len >= 8 && 1161 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1162 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1163 1164 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1165 sta->sta.uapsd_queues = params->uapsd_queues; 1166 sta->sta.max_sp = params->max_sp; 1167 } 1168 1169 /* 1170 * cfg80211 validates this (1-2007) and allows setting the AID 1171 * only when creating a new station entry 1172 */ 1173 if (params->aid) 1174 sta->sta.aid = params->aid; 1175 1176 /* 1177 * Some of the following updates would be racy if called on an 1178 * existing station, via ieee80211_change_station(). However, 1179 * all such changes are rejected by cfg80211 except for updates 1180 * changing the supported rates on an existing but not yet used 1181 * TDLS peer. 1182 */ 1183 1184 if (params->listen_interval >= 0) 1185 sta->listen_interval = params->listen_interval; 1186 1187 if (params->supported_rates) { 1188 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1189 sband, params->supported_rates, 1190 params->supported_rates_len, 1191 &sta->sta.supp_rates[band]); 1192 } 1193 1194 if (params->ht_capa) 1195 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1196 params->ht_capa, sta); 1197 1198 if (params->vht_capa) 1199 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1200 params->vht_capa, sta); 1201 1202 if (params->opmode_notif_used) { 1203 /* returned value is only needed for rc update, but the 1204 * rc isn't initialized here yet, so ignore it 1205 */ 1206 __ieee80211_vht_handle_opmode(sdata, sta, 1207 params->opmode_notif, 1208 band, false); 1209 } 1210 1211 if (ieee80211_vif_is_mesh(&sdata->vif)) 1212 sta_apply_mesh_params(local, sta, params); 1213 1214 /* set the STA state after all sta info from usermode has been set */ 1215 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1216 ret = sta_apply_auth_flags(local, sta, mask, set); 1217 if (ret) 1218 return ret; 1219 } 1220 1221 return 0; 1222 } 1223 1224 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1225 const u8 *mac, 1226 struct station_parameters *params) 1227 { 1228 struct ieee80211_local *local = wiphy_priv(wiphy); 1229 struct sta_info *sta; 1230 struct ieee80211_sub_if_data *sdata; 1231 int err; 1232 int layer2_update; 1233 1234 if (params->vlan) { 1235 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1236 1237 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1238 sdata->vif.type != NL80211_IFTYPE_AP) 1239 return -EINVAL; 1240 } else 1241 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1242 1243 if (ether_addr_equal(mac, sdata->vif.addr)) 1244 return -EINVAL; 1245 1246 if (is_multicast_ether_addr(mac)) 1247 return -EINVAL; 1248 1249 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1250 if (!sta) 1251 return -ENOMEM; 1252 1253 /* 1254 * defaults -- if userspace wants something else we'll 1255 * change it accordingly in sta_apply_parameters() 1256 */ 1257 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1258 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1259 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1260 } else { 1261 sta->sta.tdls = true; 1262 } 1263 1264 err = sta_apply_parameters(local, sta, params); 1265 if (err) { 1266 sta_info_free(local, sta); 1267 return err; 1268 } 1269 1270 /* 1271 * for TDLS, rate control should be initialized only when 1272 * rates are known and station is marked authorized 1273 */ 1274 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1275 rate_control_rate_init(sta); 1276 1277 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1278 sdata->vif.type == NL80211_IFTYPE_AP; 1279 1280 err = sta_info_insert_rcu(sta); 1281 if (err) { 1282 rcu_read_unlock(); 1283 return err; 1284 } 1285 1286 if (layer2_update) 1287 ieee80211_send_layer2_update(sta); 1288 1289 rcu_read_unlock(); 1290 1291 return 0; 1292 } 1293 1294 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1295 struct station_del_parameters *params) 1296 { 1297 struct ieee80211_sub_if_data *sdata; 1298 1299 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1300 1301 if (params->mac) 1302 return sta_info_destroy_addr_bss(sdata, params->mac); 1303 1304 sta_info_flush(sdata); 1305 return 0; 1306 } 1307 1308 static int ieee80211_change_station(struct wiphy *wiphy, 1309 struct net_device *dev, const u8 *mac, 1310 struct station_parameters *params) 1311 { 1312 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1313 struct ieee80211_local *local = wiphy_priv(wiphy); 1314 struct sta_info *sta; 1315 struct ieee80211_sub_if_data *vlansdata; 1316 enum cfg80211_station_type statype; 1317 int err; 1318 1319 mutex_lock(&local->sta_mtx); 1320 1321 sta = sta_info_get_bss(sdata, mac); 1322 if (!sta) { 1323 err = -ENOENT; 1324 goto out_err; 1325 } 1326 1327 switch (sdata->vif.type) { 1328 case NL80211_IFTYPE_MESH_POINT: 1329 if (sdata->u.mesh.user_mpm) 1330 statype = CFG80211_STA_MESH_PEER_USER; 1331 else 1332 statype = CFG80211_STA_MESH_PEER_KERNEL; 1333 break; 1334 case NL80211_IFTYPE_ADHOC: 1335 statype = CFG80211_STA_IBSS; 1336 break; 1337 case NL80211_IFTYPE_STATION: 1338 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1339 statype = CFG80211_STA_AP_STA; 1340 break; 1341 } 1342 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1343 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1344 else 1345 statype = CFG80211_STA_TDLS_PEER_SETUP; 1346 break; 1347 case NL80211_IFTYPE_AP: 1348 case NL80211_IFTYPE_AP_VLAN: 1349 statype = CFG80211_STA_AP_CLIENT; 1350 break; 1351 default: 1352 err = -EOPNOTSUPP; 1353 goto out_err; 1354 } 1355 1356 err = cfg80211_check_station_change(wiphy, params, statype); 1357 if (err) 1358 goto out_err; 1359 1360 if (params->vlan && params->vlan != sta->sdata->dev) { 1361 bool prev_4addr = false; 1362 bool new_4addr = false; 1363 1364 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1365 1366 if (params->vlan->ieee80211_ptr->use_4addr) { 1367 if (vlansdata->u.vlan.sta) { 1368 err = -EBUSY; 1369 goto out_err; 1370 } 1371 1372 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1373 new_4addr = true; 1374 } 1375 1376 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1377 sta->sdata->u.vlan.sta) { 1378 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1379 prev_4addr = true; 1380 } 1381 1382 sta->sdata = vlansdata; 1383 ieee80211_check_fast_xmit(sta); 1384 1385 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1386 prev_4addr != new_4addr) { 1387 if (new_4addr) 1388 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1389 else 1390 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1391 } 1392 1393 ieee80211_send_layer2_update(sta); 1394 } 1395 1396 err = sta_apply_parameters(local, sta, params); 1397 if (err) 1398 goto out_err; 1399 1400 mutex_unlock(&local->sta_mtx); 1401 1402 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1403 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1404 sta->known_smps_mode != sta->sdata->bss->req_smps && 1405 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1406 sta_info_tx_streams(sta) != 1) { 1407 ht_dbg(sta->sdata, 1408 "%pM just authorized and MIMO capable - update SMPS\n", 1409 sta->sta.addr); 1410 ieee80211_send_smps_action(sta->sdata, 1411 sta->sdata->bss->req_smps, 1412 sta->sta.addr, 1413 sta->sdata->vif.bss_conf.bssid); 1414 } 1415 1416 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1417 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1418 ieee80211_recalc_ps(local, -1); 1419 ieee80211_recalc_ps_vif(sdata); 1420 } 1421 1422 return 0; 1423 out_err: 1424 mutex_unlock(&local->sta_mtx); 1425 return err; 1426 } 1427 1428 #ifdef CONFIG_MAC80211_MESH 1429 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1430 const u8 *dst, const u8 *next_hop) 1431 { 1432 struct ieee80211_sub_if_data *sdata; 1433 struct mesh_path *mpath; 1434 struct sta_info *sta; 1435 1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1437 1438 rcu_read_lock(); 1439 sta = sta_info_get(sdata, next_hop); 1440 if (!sta) { 1441 rcu_read_unlock(); 1442 return -ENOENT; 1443 } 1444 1445 mpath = mesh_path_add(sdata, dst); 1446 if (IS_ERR(mpath)) { 1447 rcu_read_unlock(); 1448 return PTR_ERR(mpath); 1449 } 1450 1451 mesh_path_fix_nexthop(mpath, sta); 1452 1453 rcu_read_unlock(); 1454 return 0; 1455 } 1456 1457 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1458 const u8 *dst) 1459 { 1460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1461 1462 if (dst) 1463 return mesh_path_del(sdata, dst); 1464 1465 mesh_path_flush_by_iface(sdata); 1466 return 0; 1467 } 1468 1469 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1470 const u8 *dst, const u8 *next_hop) 1471 { 1472 struct ieee80211_sub_if_data *sdata; 1473 struct mesh_path *mpath; 1474 struct sta_info *sta; 1475 1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1477 1478 rcu_read_lock(); 1479 1480 sta = sta_info_get(sdata, next_hop); 1481 if (!sta) { 1482 rcu_read_unlock(); 1483 return -ENOENT; 1484 } 1485 1486 mpath = mesh_path_lookup(sdata, dst); 1487 if (!mpath) { 1488 rcu_read_unlock(); 1489 return -ENOENT; 1490 } 1491 1492 mesh_path_fix_nexthop(mpath, sta); 1493 1494 rcu_read_unlock(); 1495 return 0; 1496 } 1497 1498 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1499 struct mpath_info *pinfo) 1500 { 1501 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1502 1503 if (next_hop_sta) 1504 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1505 else 1506 eth_zero_addr(next_hop); 1507 1508 memset(pinfo, 0, sizeof(*pinfo)); 1509 1510 pinfo->generation = mesh_paths_generation; 1511 1512 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1513 MPATH_INFO_SN | 1514 MPATH_INFO_METRIC | 1515 MPATH_INFO_EXPTIME | 1516 MPATH_INFO_DISCOVERY_TIMEOUT | 1517 MPATH_INFO_DISCOVERY_RETRIES | 1518 MPATH_INFO_FLAGS; 1519 1520 pinfo->frame_qlen = mpath->frame_queue.qlen; 1521 pinfo->sn = mpath->sn; 1522 pinfo->metric = mpath->metric; 1523 if (time_before(jiffies, mpath->exp_time)) 1524 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1525 pinfo->discovery_timeout = 1526 jiffies_to_msecs(mpath->discovery_timeout); 1527 pinfo->discovery_retries = mpath->discovery_retries; 1528 if (mpath->flags & MESH_PATH_ACTIVE) 1529 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1530 if (mpath->flags & MESH_PATH_RESOLVING) 1531 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1532 if (mpath->flags & MESH_PATH_SN_VALID) 1533 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1534 if (mpath->flags & MESH_PATH_FIXED) 1535 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1536 if (mpath->flags & MESH_PATH_RESOLVED) 1537 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1538 } 1539 1540 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1541 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1542 1543 { 1544 struct ieee80211_sub_if_data *sdata; 1545 struct mesh_path *mpath; 1546 1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1548 1549 rcu_read_lock(); 1550 mpath = mesh_path_lookup(sdata, dst); 1551 if (!mpath) { 1552 rcu_read_unlock(); 1553 return -ENOENT; 1554 } 1555 memcpy(dst, mpath->dst, ETH_ALEN); 1556 mpath_set_pinfo(mpath, next_hop, pinfo); 1557 rcu_read_unlock(); 1558 return 0; 1559 } 1560 1561 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1562 int idx, u8 *dst, u8 *next_hop, 1563 struct mpath_info *pinfo) 1564 { 1565 struct ieee80211_sub_if_data *sdata; 1566 struct mesh_path *mpath; 1567 1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1569 1570 rcu_read_lock(); 1571 mpath = mesh_path_lookup_by_idx(sdata, idx); 1572 if (!mpath) { 1573 rcu_read_unlock(); 1574 return -ENOENT; 1575 } 1576 memcpy(dst, mpath->dst, ETH_ALEN); 1577 mpath_set_pinfo(mpath, next_hop, pinfo); 1578 rcu_read_unlock(); 1579 return 0; 1580 } 1581 1582 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1583 struct mpath_info *pinfo) 1584 { 1585 memset(pinfo, 0, sizeof(*pinfo)); 1586 memcpy(mpp, mpath->mpp, ETH_ALEN); 1587 1588 pinfo->generation = mpp_paths_generation; 1589 } 1590 1591 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1592 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1593 1594 { 1595 struct ieee80211_sub_if_data *sdata; 1596 struct mesh_path *mpath; 1597 1598 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1599 1600 rcu_read_lock(); 1601 mpath = mpp_path_lookup(sdata, dst); 1602 if (!mpath) { 1603 rcu_read_unlock(); 1604 return -ENOENT; 1605 } 1606 memcpy(dst, mpath->dst, ETH_ALEN); 1607 mpp_set_pinfo(mpath, mpp, pinfo); 1608 rcu_read_unlock(); 1609 return 0; 1610 } 1611 1612 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1613 int idx, u8 *dst, u8 *mpp, 1614 struct mpath_info *pinfo) 1615 { 1616 struct ieee80211_sub_if_data *sdata; 1617 struct mesh_path *mpath; 1618 1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1620 1621 rcu_read_lock(); 1622 mpath = mpp_path_lookup_by_idx(sdata, idx); 1623 if (!mpath) { 1624 rcu_read_unlock(); 1625 return -ENOENT; 1626 } 1627 memcpy(dst, mpath->dst, ETH_ALEN); 1628 mpp_set_pinfo(mpath, mpp, pinfo); 1629 rcu_read_unlock(); 1630 return 0; 1631 } 1632 1633 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1634 struct net_device *dev, 1635 struct mesh_config *conf) 1636 { 1637 struct ieee80211_sub_if_data *sdata; 1638 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1639 1640 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1641 return 0; 1642 } 1643 1644 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1645 { 1646 return (mask >> (parm-1)) & 0x1; 1647 } 1648 1649 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1650 const struct mesh_setup *setup) 1651 { 1652 u8 *new_ie; 1653 const u8 *old_ie; 1654 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1655 struct ieee80211_sub_if_data, u.mesh); 1656 1657 /* allocate information elements */ 1658 new_ie = NULL; 1659 old_ie = ifmsh->ie; 1660 1661 if (setup->ie_len) { 1662 new_ie = kmemdup(setup->ie, setup->ie_len, 1663 GFP_KERNEL); 1664 if (!new_ie) 1665 return -ENOMEM; 1666 } 1667 ifmsh->ie_len = setup->ie_len; 1668 ifmsh->ie = new_ie; 1669 kfree(old_ie); 1670 1671 /* now copy the rest of the setup parameters */ 1672 ifmsh->mesh_id_len = setup->mesh_id_len; 1673 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1674 ifmsh->mesh_sp_id = setup->sync_method; 1675 ifmsh->mesh_pp_id = setup->path_sel_proto; 1676 ifmsh->mesh_pm_id = setup->path_metric; 1677 ifmsh->user_mpm = setup->user_mpm; 1678 ifmsh->mesh_auth_id = setup->auth_id; 1679 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1680 if (setup->is_authenticated) 1681 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1682 if (setup->is_secure) 1683 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1684 1685 /* mcast rate setting in Mesh Node */ 1686 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1687 sizeof(setup->mcast_rate)); 1688 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1689 1690 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1691 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1692 1693 return 0; 1694 } 1695 1696 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1697 struct net_device *dev, u32 mask, 1698 const struct mesh_config *nconf) 1699 { 1700 struct mesh_config *conf; 1701 struct ieee80211_sub_if_data *sdata; 1702 struct ieee80211_if_mesh *ifmsh; 1703 1704 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1705 ifmsh = &sdata->u.mesh; 1706 1707 /* Set the config options which we are interested in setting */ 1708 conf = &(sdata->u.mesh.mshcfg); 1709 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1710 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1711 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1712 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1714 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1715 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1716 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1717 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1718 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1719 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1720 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1721 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1722 conf->element_ttl = nconf->element_ttl; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1724 if (ifmsh->user_mpm) 1725 return -EBUSY; 1726 conf->auto_open_plinks = nconf->auto_open_plinks; 1727 } 1728 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1729 conf->dot11MeshNbrOffsetMaxNeighbor = 1730 nconf->dot11MeshNbrOffsetMaxNeighbor; 1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1732 conf->dot11MeshHWMPmaxPREQretries = 1733 nconf->dot11MeshHWMPmaxPREQretries; 1734 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1735 conf->path_refresh_time = nconf->path_refresh_time; 1736 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1737 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1739 conf->dot11MeshHWMPactivePathTimeout = 1740 nconf->dot11MeshHWMPactivePathTimeout; 1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1742 conf->dot11MeshHWMPpreqMinInterval = 1743 nconf->dot11MeshHWMPpreqMinInterval; 1744 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1745 conf->dot11MeshHWMPperrMinInterval = 1746 nconf->dot11MeshHWMPperrMinInterval; 1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1748 mask)) 1749 conf->dot11MeshHWMPnetDiameterTraversalTime = 1750 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1752 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1753 ieee80211_mesh_root_setup(ifmsh); 1754 } 1755 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1756 /* our current gate announcement implementation rides on root 1757 * announcements, so require this ifmsh to also be a root node 1758 * */ 1759 if (nconf->dot11MeshGateAnnouncementProtocol && 1760 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1761 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1762 ieee80211_mesh_root_setup(ifmsh); 1763 } 1764 conf->dot11MeshGateAnnouncementProtocol = 1765 nconf->dot11MeshGateAnnouncementProtocol; 1766 } 1767 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1768 conf->dot11MeshHWMPRannInterval = 1769 nconf->dot11MeshHWMPRannInterval; 1770 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1771 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1772 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1773 /* our RSSI threshold implementation is supported only for 1774 * devices that report signal in dBm. 1775 */ 1776 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1777 return -ENOTSUPP; 1778 conf->rssi_threshold = nconf->rssi_threshold; 1779 } 1780 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1781 conf->ht_opmode = nconf->ht_opmode; 1782 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1783 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1784 } 1785 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1786 conf->dot11MeshHWMPactivePathToRootTimeout = 1787 nconf->dot11MeshHWMPactivePathToRootTimeout; 1788 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1789 conf->dot11MeshHWMProotInterval = 1790 nconf->dot11MeshHWMProotInterval; 1791 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1792 conf->dot11MeshHWMPconfirmationInterval = 1793 nconf->dot11MeshHWMPconfirmationInterval; 1794 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1795 conf->power_mode = nconf->power_mode; 1796 ieee80211_mps_local_status_update(sdata); 1797 } 1798 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1799 conf->dot11MeshAwakeWindowDuration = 1800 nconf->dot11MeshAwakeWindowDuration; 1801 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1802 conf->plink_timeout = nconf->plink_timeout; 1803 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1804 return 0; 1805 } 1806 1807 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1808 const struct mesh_config *conf, 1809 const struct mesh_setup *setup) 1810 { 1811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1812 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1813 int err; 1814 1815 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1816 err = copy_mesh_setup(ifmsh, setup); 1817 if (err) 1818 return err; 1819 1820 /* can mesh use other SMPS modes? */ 1821 sdata->smps_mode = IEEE80211_SMPS_OFF; 1822 sdata->needed_rx_chains = sdata->local->rx_chains; 1823 1824 mutex_lock(&sdata->local->mtx); 1825 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1826 IEEE80211_CHANCTX_SHARED); 1827 mutex_unlock(&sdata->local->mtx); 1828 if (err) 1829 return err; 1830 1831 return ieee80211_start_mesh(sdata); 1832 } 1833 1834 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1835 { 1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1837 1838 ieee80211_stop_mesh(sdata); 1839 mutex_lock(&sdata->local->mtx); 1840 ieee80211_vif_release_channel(sdata); 1841 mutex_unlock(&sdata->local->mtx); 1842 1843 return 0; 1844 } 1845 #endif 1846 1847 static int ieee80211_change_bss(struct wiphy *wiphy, 1848 struct net_device *dev, 1849 struct bss_parameters *params) 1850 { 1851 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1852 enum ieee80211_band band; 1853 u32 changed = 0; 1854 1855 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1856 return -ENOENT; 1857 1858 band = ieee80211_get_sdata_band(sdata); 1859 1860 if (params->use_cts_prot >= 0) { 1861 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1862 changed |= BSS_CHANGED_ERP_CTS_PROT; 1863 } 1864 if (params->use_short_preamble >= 0) { 1865 sdata->vif.bss_conf.use_short_preamble = 1866 params->use_short_preamble; 1867 changed |= BSS_CHANGED_ERP_PREAMBLE; 1868 } 1869 1870 if (!sdata->vif.bss_conf.use_short_slot && 1871 band == IEEE80211_BAND_5GHZ) { 1872 sdata->vif.bss_conf.use_short_slot = true; 1873 changed |= BSS_CHANGED_ERP_SLOT; 1874 } 1875 1876 if (params->use_short_slot_time >= 0) { 1877 sdata->vif.bss_conf.use_short_slot = 1878 params->use_short_slot_time; 1879 changed |= BSS_CHANGED_ERP_SLOT; 1880 } 1881 1882 if (params->basic_rates) { 1883 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1884 wiphy->bands[band], 1885 params->basic_rates, 1886 params->basic_rates_len, 1887 &sdata->vif.bss_conf.basic_rates); 1888 changed |= BSS_CHANGED_BASIC_RATES; 1889 } 1890 1891 if (params->ap_isolate >= 0) { 1892 if (params->ap_isolate) 1893 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1894 else 1895 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1896 } 1897 1898 if (params->ht_opmode >= 0) { 1899 sdata->vif.bss_conf.ht_operation_mode = 1900 (u16) params->ht_opmode; 1901 changed |= BSS_CHANGED_HT; 1902 } 1903 1904 if (params->p2p_ctwindow >= 0) { 1905 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1906 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1907 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1908 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1909 changed |= BSS_CHANGED_P2P_PS; 1910 } 1911 1912 if (params->p2p_opp_ps > 0) { 1913 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1914 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1915 changed |= BSS_CHANGED_P2P_PS; 1916 } else if (params->p2p_opp_ps == 0) { 1917 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1918 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1919 changed |= BSS_CHANGED_P2P_PS; 1920 } 1921 1922 ieee80211_bss_info_change_notify(sdata, changed); 1923 1924 return 0; 1925 } 1926 1927 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1928 struct net_device *dev, 1929 struct ieee80211_txq_params *params) 1930 { 1931 struct ieee80211_local *local = wiphy_priv(wiphy); 1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1933 struct ieee80211_tx_queue_params p; 1934 1935 if (!local->ops->conf_tx) 1936 return -EOPNOTSUPP; 1937 1938 if (local->hw.queues < IEEE80211_NUM_ACS) 1939 return -EOPNOTSUPP; 1940 1941 memset(&p, 0, sizeof(p)); 1942 p.aifs = params->aifs; 1943 p.cw_max = params->cwmax; 1944 p.cw_min = params->cwmin; 1945 p.txop = params->txop; 1946 1947 /* 1948 * Setting tx queue params disables u-apsd because it's only 1949 * called in master mode. 1950 */ 1951 p.uapsd = false; 1952 1953 sdata->tx_conf[params->ac] = p; 1954 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1955 wiphy_debug(local->hw.wiphy, 1956 "failed to set TX queue parameters for AC %d\n", 1957 params->ac); 1958 return -EINVAL; 1959 } 1960 1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1962 1963 return 0; 1964 } 1965 1966 #ifdef CONFIG_PM 1967 static int ieee80211_suspend(struct wiphy *wiphy, 1968 struct cfg80211_wowlan *wowlan) 1969 { 1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1971 } 1972 1973 static int ieee80211_resume(struct wiphy *wiphy) 1974 { 1975 return __ieee80211_resume(wiphy_priv(wiphy)); 1976 } 1977 #else 1978 #define ieee80211_suspend NULL 1979 #define ieee80211_resume NULL 1980 #endif 1981 1982 static int ieee80211_scan(struct wiphy *wiphy, 1983 struct cfg80211_scan_request *req) 1984 { 1985 struct ieee80211_sub_if_data *sdata; 1986 1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1988 1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1990 case NL80211_IFTYPE_STATION: 1991 case NL80211_IFTYPE_ADHOC: 1992 case NL80211_IFTYPE_MESH_POINT: 1993 case NL80211_IFTYPE_P2P_CLIENT: 1994 case NL80211_IFTYPE_P2P_DEVICE: 1995 break; 1996 case NL80211_IFTYPE_P2P_GO: 1997 if (sdata->local->ops->hw_scan) 1998 break; 1999 /* 2000 * FIXME: implement NoA while scanning in software, 2001 * for now fall through to allow scanning only when 2002 * beaconing hasn't been configured yet 2003 */ 2004 case NL80211_IFTYPE_AP: 2005 /* 2006 * If the scan has been forced (and the driver supports 2007 * forcing), don't care about being beaconing already. 2008 * This will create problems to the attached stations (e.g. all 2009 * the frames sent while scanning on other channel will be 2010 * lost) 2011 */ 2012 if (sdata->u.ap.beacon && 2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2014 !(req->flags & NL80211_SCAN_FLAG_AP))) 2015 return -EOPNOTSUPP; 2016 break; 2017 default: 2018 return -EOPNOTSUPP; 2019 } 2020 2021 return ieee80211_request_scan(sdata, req); 2022 } 2023 2024 static int 2025 ieee80211_sched_scan_start(struct wiphy *wiphy, 2026 struct net_device *dev, 2027 struct cfg80211_sched_scan_request *req) 2028 { 2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2030 2031 if (!sdata->local->ops->sched_scan_start) 2032 return -EOPNOTSUPP; 2033 2034 return ieee80211_request_sched_scan_start(sdata, req); 2035 } 2036 2037 static int 2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2039 { 2040 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2041 2042 if (!sdata->local->ops->sched_scan_stop) 2043 return -EOPNOTSUPP; 2044 2045 return ieee80211_request_sched_scan_stop(sdata); 2046 } 2047 2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2049 struct cfg80211_auth_request *req) 2050 { 2051 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2052 } 2053 2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2055 struct cfg80211_assoc_request *req) 2056 { 2057 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2058 } 2059 2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2061 struct cfg80211_deauth_request *req) 2062 { 2063 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2064 } 2065 2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2067 struct cfg80211_disassoc_request *req) 2068 { 2069 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2070 } 2071 2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2073 struct cfg80211_ibss_params *params) 2074 { 2075 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2076 } 2077 2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2079 { 2080 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2081 } 2082 2083 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2084 struct ocb_setup *setup) 2085 { 2086 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2087 } 2088 2089 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2090 { 2091 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2092 } 2093 2094 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2095 int rate[IEEE80211_NUM_BANDS]) 2096 { 2097 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2098 2099 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2100 sizeof(int) * IEEE80211_NUM_BANDS); 2101 2102 return 0; 2103 } 2104 2105 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2106 { 2107 struct ieee80211_local *local = wiphy_priv(wiphy); 2108 int err; 2109 2110 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2111 ieee80211_check_fast_xmit_all(local); 2112 2113 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2114 2115 if (err) { 2116 ieee80211_check_fast_xmit_all(local); 2117 return err; 2118 } 2119 } 2120 2121 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2122 (changed & WIPHY_PARAM_DYN_ACK)) { 2123 s16 coverage_class; 2124 2125 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2126 wiphy->coverage_class : -1; 2127 err = drv_set_coverage_class(local, coverage_class); 2128 2129 if (err) 2130 return err; 2131 } 2132 2133 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2134 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2135 2136 if (err) 2137 return err; 2138 } 2139 2140 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2141 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2142 return -EINVAL; 2143 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2144 } 2145 if (changed & WIPHY_PARAM_RETRY_LONG) { 2146 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2147 return -EINVAL; 2148 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2149 } 2150 if (changed & 2151 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2152 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2153 2154 return 0; 2155 } 2156 2157 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2158 struct wireless_dev *wdev, 2159 enum nl80211_tx_power_setting type, int mbm) 2160 { 2161 struct ieee80211_local *local = wiphy_priv(wiphy); 2162 struct ieee80211_sub_if_data *sdata; 2163 enum nl80211_tx_power_setting txp_type = type; 2164 bool update_txp_type = false; 2165 2166 if (wdev) { 2167 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2168 2169 switch (type) { 2170 case NL80211_TX_POWER_AUTOMATIC: 2171 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2172 txp_type = NL80211_TX_POWER_LIMITED; 2173 break; 2174 case NL80211_TX_POWER_LIMITED: 2175 case NL80211_TX_POWER_FIXED: 2176 if (mbm < 0 || (mbm % 100)) 2177 return -EOPNOTSUPP; 2178 sdata->user_power_level = MBM_TO_DBM(mbm); 2179 break; 2180 } 2181 2182 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2183 update_txp_type = true; 2184 sdata->vif.bss_conf.txpower_type = txp_type; 2185 } 2186 2187 ieee80211_recalc_txpower(sdata, update_txp_type); 2188 2189 return 0; 2190 } 2191 2192 switch (type) { 2193 case NL80211_TX_POWER_AUTOMATIC: 2194 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2195 txp_type = NL80211_TX_POWER_LIMITED; 2196 break; 2197 case NL80211_TX_POWER_LIMITED: 2198 case NL80211_TX_POWER_FIXED: 2199 if (mbm < 0 || (mbm % 100)) 2200 return -EOPNOTSUPP; 2201 local->user_power_level = MBM_TO_DBM(mbm); 2202 break; 2203 } 2204 2205 mutex_lock(&local->iflist_mtx); 2206 list_for_each_entry(sdata, &local->interfaces, list) { 2207 sdata->user_power_level = local->user_power_level; 2208 if (txp_type != sdata->vif.bss_conf.txpower_type) 2209 update_txp_type = true; 2210 sdata->vif.bss_conf.txpower_type = txp_type; 2211 } 2212 list_for_each_entry(sdata, &local->interfaces, list) 2213 ieee80211_recalc_txpower(sdata, update_txp_type); 2214 mutex_unlock(&local->iflist_mtx); 2215 2216 return 0; 2217 } 2218 2219 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2220 struct wireless_dev *wdev, 2221 int *dbm) 2222 { 2223 struct ieee80211_local *local = wiphy_priv(wiphy); 2224 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2225 2226 if (local->ops->get_txpower) 2227 return drv_get_txpower(local, sdata, dbm); 2228 2229 if (!local->use_chanctx) 2230 *dbm = local->hw.conf.power_level; 2231 else 2232 *dbm = sdata->vif.bss_conf.txpower; 2233 2234 return 0; 2235 } 2236 2237 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2238 const u8 *addr) 2239 { 2240 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2241 2242 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2243 2244 return 0; 2245 } 2246 2247 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2248 { 2249 struct ieee80211_local *local = wiphy_priv(wiphy); 2250 2251 drv_rfkill_poll(local); 2252 } 2253 2254 #ifdef CONFIG_NL80211_TESTMODE 2255 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2256 struct wireless_dev *wdev, 2257 void *data, int len) 2258 { 2259 struct ieee80211_local *local = wiphy_priv(wiphy); 2260 struct ieee80211_vif *vif = NULL; 2261 2262 if (!local->ops->testmode_cmd) 2263 return -EOPNOTSUPP; 2264 2265 if (wdev) { 2266 struct ieee80211_sub_if_data *sdata; 2267 2268 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2269 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2270 vif = &sdata->vif; 2271 } 2272 2273 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2274 } 2275 2276 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2277 struct sk_buff *skb, 2278 struct netlink_callback *cb, 2279 void *data, int len) 2280 { 2281 struct ieee80211_local *local = wiphy_priv(wiphy); 2282 2283 if (!local->ops->testmode_dump) 2284 return -EOPNOTSUPP; 2285 2286 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2287 } 2288 #endif 2289 2290 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2291 enum ieee80211_smps_mode smps_mode) 2292 { 2293 struct sta_info *sta; 2294 enum ieee80211_smps_mode old_req; 2295 2296 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2297 return -EINVAL; 2298 2299 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2300 return 0; 2301 2302 old_req = sdata->u.ap.req_smps; 2303 sdata->u.ap.req_smps = smps_mode; 2304 2305 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2306 if (old_req == smps_mode || 2307 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2308 return 0; 2309 2310 /* If no associated stations, there's no need to do anything */ 2311 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2312 sdata->smps_mode = smps_mode; 2313 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2314 return 0; 2315 } 2316 2317 ht_dbg(sdata, 2318 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2319 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2320 2321 mutex_lock(&sdata->local->sta_mtx); 2322 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2323 /* 2324 * Only stations associated to our AP and 2325 * associated VLANs 2326 */ 2327 if (sta->sdata->bss != &sdata->u.ap) 2328 continue; 2329 2330 /* This station doesn't support MIMO - skip it */ 2331 if (sta_info_tx_streams(sta) == 1) 2332 continue; 2333 2334 /* 2335 * Don't wake up a STA just to send the action frame 2336 * unless we are getting more restrictive. 2337 */ 2338 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2339 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2340 smps_mode)) { 2341 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2342 sta->sta.addr); 2343 continue; 2344 } 2345 2346 /* 2347 * If the STA is not authorized, wait until it gets 2348 * authorized and the action frame will be sent then. 2349 */ 2350 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2351 continue; 2352 2353 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2354 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2355 sdata->vif.bss_conf.bssid); 2356 } 2357 mutex_unlock(&sdata->local->sta_mtx); 2358 2359 sdata->smps_mode = smps_mode; 2360 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2361 2362 return 0; 2363 } 2364 2365 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2366 enum ieee80211_smps_mode smps_mode) 2367 { 2368 const u8 *ap; 2369 enum ieee80211_smps_mode old_req; 2370 int err; 2371 struct sta_info *sta; 2372 bool tdls_peer_found = false; 2373 2374 lockdep_assert_held(&sdata->wdev.mtx); 2375 2376 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2377 return -EINVAL; 2378 2379 old_req = sdata->u.mgd.req_smps; 2380 sdata->u.mgd.req_smps = smps_mode; 2381 2382 if (old_req == smps_mode && 2383 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2384 return 0; 2385 2386 /* 2387 * If not associated, or current association is not an HT 2388 * association, there's no need to do anything, just store 2389 * the new value until we associate. 2390 */ 2391 if (!sdata->u.mgd.associated || 2392 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2393 return 0; 2394 2395 ap = sdata->u.mgd.associated->bssid; 2396 2397 rcu_read_lock(); 2398 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2399 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2400 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2401 continue; 2402 2403 tdls_peer_found = true; 2404 break; 2405 } 2406 rcu_read_unlock(); 2407 2408 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2409 if (tdls_peer_found || !sdata->u.mgd.powersave) 2410 smps_mode = IEEE80211_SMPS_OFF; 2411 else 2412 smps_mode = IEEE80211_SMPS_DYNAMIC; 2413 } 2414 2415 /* send SM PS frame to AP */ 2416 err = ieee80211_send_smps_action(sdata, smps_mode, 2417 ap, ap); 2418 if (err) 2419 sdata->u.mgd.req_smps = old_req; 2420 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2421 ieee80211_teardown_tdls_peers(sdata); 2422 2423 return err; 2424 } 2425 2426 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2427 bool enabled, int timeout) 2428 { 2429 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2430 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2431 2432 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2433 return -EOPNOTSUPP; 2434 2435 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2436 return -EOPNOTSUPP; 2437 2438 if (enabled == sdata->u.mgd.powersave && 2439 timeout == local->dynamic_ps_forced_timeout) 2440 return 0; 2441 2442 sdata->u.mgd.powersave = enabled; 2443 local->dynamic_ps_forced_timeout = timeout; 2444 2445 /* no change, but if automatic follow powersave */ 2446 sdata_lock(sdata); 2447 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2448 sdata_unlock(sdata); 2449 2450 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2451 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2452 2453 ieee80211_recalc_ps(local, -1); 2454 ieee80211_recalc_ps_vif(sdata); 2455 2456 return 0; 2457 } 2458 2459 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2460 struct net_device *dev, 2461 s32 rssi_thold, u32 rssi_hyst) 2462 { 2463 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2464 struct ieee80211_vif *vif = &sdata->vif; 2465 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2466 2467 if (rssi_thold == bss_conf->cqm_rssi_thold && 2468 rssi_hyst == bss_conf->cqm_rssi_hyst) 2469 return 0; 2470 2471 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2472 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2473 return -EOPNOTSUPP; 2474 2475 bss_conf->cqm_rssi_thold = rssi_thold; 2476 bss_conf->cqm_rssi_hyst = rssi_hyst; 2477 2478 /* tell the driver upon association, unless already associated */ 2479 if (sdata->u.mgd.associated && 2480 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2481 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2482 2483 return 0; 2484 } 2485 2486 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2487 struct net_device *dev, 2488 const u8 *addr, 2489 const struct cfg80211_bitrate_mask *mask) 2490 { 2491 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2492 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2493 int i, ret; 2494 2495 if (!ieee80211_sdata_running(sdata)) 2496 return -ENETDOWN; 2497 2498 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2499 ret = drv_set_bitrate_mask(local, sdata, mask); 2500 if (ret) 2501 return ret; 2502 } 2503 2504 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2505 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2506 int j; 2507 2508 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2509 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2510 sizeof(mask->control[i].ht_mcs)); 2511 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2512 mask->control[i].vht_mcs, 2513 sizeof(mask->control[i].vht_mcs)); 2514 2515 sdata->rc_has_mcs_mask[i] = false; 2516 sdata->rc_has_vht_mcs_mask[i] = false; 2517 if (!sband) 2518 continue; 2519 2520 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2521 if (~sdata->rc_rateidx_mcs_mask[i][j]) 2522 sdata->rc_has_mcs_mask[i] = true; 2523 2524 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) 2525 sdata->rc_has_vht_mcs_mask[i] = true; 2526 2527 if (sdata->rc_has_mcs_mask[i] && 2528 sdata->rc_has_vht_mcs_mask[i]) 2529 break; 2530 } 2531 } 2532 2533 return 0; 2534 } 2535 2536 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2537 struct ieee80211_roc_work *new_roc, 2538 struct ieee80211_roc_work *cur_roc) 2539 { 2540 unsigned long now = jiffies; 2541 unsigned long remaining = cur_roc->hw_start_time + 2542 msecs_to_jiffies(cur_roc->duration) - 2543 now; 2544 2545 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2546 return false; 2547 2548 /* if it doesn't fit entirely, schedule a new one */ 2549 if (new_roc->duration > jiffies_to_msecs(remaining)) 2550 return false; 2551 2552 ieee80211_handle_roc_started(new_roc); 2553 2554 /* add to dependents so we send the expired event properly */ 2555 list_add_tail(&new_roc->list, &cur_roc->dependents); 2556 return true; 2557 } 2558 2559 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 2560 { 2561 lockdep_assert_held(&local->mtx); 2562 2563 local->roc_cookie_counter++; 2564 2565 /* wow, you wrapped 64 bits ... more likely a bug */ 2566 if (WARN_ON(local->roc_cookie_counter == 0)) 2567 local->roc_cookie_counter++; 2568 2569 return local->roc_cookie_counter; 2570 } 2571 2572 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2573 struct ieee80211_sub_if_data *sdata, 2574 struct ieee80211_channel *channel, 2575 unsigned int duration, u64 *cookie, 2576 struct sk_buff *txskb, 2577 enum ieee80211_roc_type type) 2578 { 2579 struct ieee80211_roc_work *roc, *tmp; 2580 bool queued = false; 2581 int ret; 2582 2583 lockdep_assert_held(&local->mtx); 2584 2585 if (local->use_chanctx && !local->ops->remain_on_channel) 2586 return -EOPNOTSUPP; 2587 2588 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2589 if (!roc) 2590 return -ENOMEM; 2591 2592 /* 2593 * If the duration is zero, then the driver 2594 * wouldn't actually do anything. Set it to 2595 * 10 for now. 2596 * 2597 * TODO: cancel the off-channel operation 2598 * when we get the SKB's TX status and 2599 * the wait time was zero before. 2600 */ 2601 if (!duration) 2602 duration = 10; 2603 2604 roc->chan = channel; 2605 roc->duration = duration; 2606 roc->req_duration = duration; 2607 roc->frame = txskb; 2608 roc->type = type; 2609 roc->sdata = sdata; 2610 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2611 INIT_LIST_HEAD(&roc->dependents); 2612 2613 /* 2614 * cookie is either the roc cookie (for normal roc) 2615 * or the SKB (for mgmt TX) 2616 */ 2617 if (!txskb) { 2618 roc->cookie = ieee80211_mgmt_tx_cookie(local); 2619 *cookie = roc->cookie; 2620 } else { 2621 roc->mgmt_tx_cookie = *cookie; 2622 } 2623 2624 /* if there's one pending or we're scanning, queue this one */ 2625 if (!list_empty(&local->roc_list) || 2626 local->scanning || ieee80211_is_radar_required(local)) 2627 goto out_check_combine; 2628 2629 /* if not HW assist, just queue & schedule work */ 2630 if (!local->ops->remain_on_channel) { 2631 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2632 goto out_queue; 2633 } 2634 2635 /* otherwise actually kick it off here (for error handling) */ 2636 2637 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2638 if (ret) { 2639 kfree(roc); 2640 return ret; 2641 } 2642 2643 roc->started = true; 2644 goto out_queue; 2645 2646 out_check_combine: 2647 list_for_each_entry(tmp, &local->roc_list, list) { 2648 if (tmp->chan != channel || tmp->sdata != sdata) 2649 continue; 2650 2651 /* 2652 * Extend this ROC if possible: 2653 * 2654 * If it hasn't started yet, just increase the duration 2655 * and add the new one to the list of dependents. 2656 * If the type of the new ROC has higher priority, modify the 2657 * type of the previous one to match that of the new one. 2658 */ 2659 if (!tmp->started) { 2660 list_add_tail(&roc->list, &tmp->dependents); 2661 tmp->duration = max(tmp->duration, roc->duration); 2662 tmp->type = max(tmp->type, roc->type); 2663 queued = true; 2664 break; 2665 } 2666 2667 /* If it has already started, it's more difficult ... */ 2668 if (local->ops->remain_on_channel) { 2669 /* 2670 * In the offloaded ROC case, if it hasn't begun, add 2671 * this new one to the dependent list to be handled 2672 * when the master one begins. If it has begun, 2673 * check if it fits entirely within the existing one, 2674 * in which case it will just be dependent as well. 2675 * Otherwise, schedule it by itself. 2676 */ 2677 if (!tmp->hw_begun) { 2678 list_add_tail(&roc->list, &tmp->dependents); 2679 queued = true; 2680 break; 2681 } 2682 2683 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2684 queued = true; 2685 } else if (del_timer_sync(&tmp->work.timer)) { 2686 unsigned long new_end; 2687 2688 /* 2689 * In the software ROC case, cancel the timer, if 2690 * that fails then the finish work is already 2691 * queued/pending and thus we queue the new ROC 2692 * normally, if that succeeds then we can extend 2693 * the timer duration and TX the frame (if any.) 2694 */ 2695 2696 list_add_tail(&roc->list, &tmp->dependents); 2697 queued = true; 2698 2699 new_end = jiffies + msecs_to_jiffies(roc->duration); 2700 2701 /* ok, it was started & we canceled timer */ 2702 if (time_after(new_end, tmp->work.timer.expires)) 2703 mod_timer(&tmp->work.timer, new_end); 2704 else 2705 add_timer(&tmp->work.timer); 2706 2707 ieee80211_handle_roc_started(roc); 2708 } 2709 break; 2710 } 2711 2712 out_queue: 2713 if (!queued) 2714 list_add_tail(&roc->list, &local->roc_list); 2715 2716 return 0; 2717 } 2718 2719 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2720 struct wireless_dev *wdev, 2721 struct ieee80211_channel *chan, 2722 unsigned int duration, 2723 u64 *cookie) 2724 { 2725 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2726 struct ieee80211_local *local = sdata->local; 2727 int ret; 2728 2729 mutex_lock(&local->mtx); 2730 ret = ieee80211_start_roc_work(local, sdata, chan, 2731 duration, cookie, NULL, 2732 IEEE80211_ROC_TYPE_NORMAL); 2733 mutex_unlock(&local->mtx); 2734 2735 return ret; 2736 } 2737 2738 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2739 u64 cookie, bool mgmt_tx) 2740 { 2741 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2742 int ret; 2743 2744 mutex_lock(&local->mtx); 2745 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2746 struct ieee80211_roc_work *dep, *tmp2; 2747 2748 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2749 if (!mgmt_tx && dep->cookie != cookie) 2750 continue; 2751 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2752 continue; 2753 /* found dependent item -- just remove it */ 2754 list_del(&dep->list); 2755 mutex_unlock(&local->mtx); 2756 2757 ieee80211_roc_notify_destroy(dep, true); 2758 return 0; 2759 } 2760 2761 if (!mgmt_tx && roc->cookie != cookie) 2762 continue; 2763 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2764 continue; 2765 2766 found = roc; 2767 break; 2768 } 2769 2770 if (!found) { 2771 mutex_unlock(&local->mtx); 2772 return -ENOENT; 2773 } 2774 2775 /* 2776 * We found the item to cancel, so do that. Note that it 2777 * may have dependents, which we also cancel (and send 2778 * the expired signal for.) Not doing so would be quite 2779 * tricky here, but we may need to fix it later. 2780 */ 2781 2782 if (local->ops->remain_on_channel) { 2783 if (found->started) { 2784 ret = drv_cancel_remain_on_channel(local); 2785 if (WARN_ON_ONCE(ret)) { 2786 mutex_unlock(&local->mtx); 2787 return ret; 2788 } 2789 } 2790 2791 list_del(&found->list); 2792 2793 if (found->started) 2794 ieee80211_start_next_roc(local); 2795 mutex_unlock(&local->mtx); 2796 2797 ieee80211_roc_notify_destroy(found, true); 2798 } else { 2799 /* work may be pending so use it all the time */ 2800 found->abort = true; 2801 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2802 2803 mutex_unlock(&local->mtx); 2804 2805 /* work will clean up etc */ 2806 flush_delayed_work(&found->work); 2807 WARN_ON(!found->to_be_freed); 2808 kfree(found); 2809 } 2810 2811 return 0; 2812 } 2813 2814 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2815 struct wireless_dev *wdev, 2816 u64 cookie) 2817 { 2818 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2819 struct ieee80211_local *local = sdata->local; 2820 2821 return ieee80211_cancel_roc(local, cookie, false); 2822 } 2823 2824 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2825 struct net_device *dev, 2826 struct cfg80211_chan_def *chandef, 2827 u32 cac_time_ms) 2828 { 2829 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2830 struct ieee80211_local *local = sdata->local; 2831 int err; 2832 2833 mutex_lock(&local->mtx); 2834 if (!list_empty(&local->roc_list) || local->scanning) { 2835 err = -EBUSY; 2836 goto out_unlock; 2837 } 2838 2839 /* whatever, but channel contexts should not complain about that one */ 2840 sdata->smps_mode = IEEE80211_SMPS_OFF; 2841 sdata->needed_rx_chains = local->rx_chains; 2842 2843 err = ieee80211_vif_use_channel(sdata, chandef, 2844 IEEE80211_CHANCTX_SHARED); 2845 if (err) 2846 goto out_unlock; 2847 2848 ieee80211_queue_delayed_work(&sdata->local->hw, 2849 &sdata->dfs_cac_timer_work, 2850 msecs_to_jiffies(cac_time_ms)); 2851 2852 out_unlock: 2853 mutex_unlock(&local->mtx); 2854 return err; 2855 } 2856 2857 static struct cfg80211_beacon_data * 2858 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2859 { 2860 struct cfg80211_beacon_data *new_beacon; 2861 u8 *pos; 2862 int len; 2863 2864 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2865 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2866 beacon->probe_resp_len; 2867 2868 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2869 if (!new_beacon) 2870 return NULL; 2871 2872 pos = (u8 *)(new_beacon + 1); 2873 if (beacon->head_len) { 2874 new_beacon->head_len = beacon->head_len; 2875 new_beacon->head = pos; 2876 memcpy(pos, beacon->head, beacon->head_len); 2877 pos += beacon->head_len; 2878 } 2879 if (beacon->tail_len) { 2880 new_beacon->tail_len = beacon->tail_len; 2881 new_beacon->tail = pos; 2882 memcpy(pos, beacon->tail, beacon->tail_len); 2883 pos += beacon->tail_len; 2884 } 2885 if (beacon->beacon_ies_len) { 2886 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2887 new_beacon->beacon_ies = pos; 2888 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2889 pos += beacon->beacon_ies_len; 2890 } 2891 if (beacon->proberesp_ies_len) { 2892 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2893 new_beacon->proberesp_ies = pos; 2894 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2895 pos += beacon->proberesp_ies_len; 2896 } 2897 if (beacon->assocresp_ies_len) { 2898 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2899 new_beacon->assocresp_ies = pos; 2900 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2901 pos += beacon->assocresp_ies_len; 2902 } 2903 if (beacon->probe_resp_len) { 2904 new_beacon->probe_resp_len = beacon->probe_resp_len; 2905 beacon->probe_resp = pos; 2906 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2907 pos += beacon->probe_resp_len; 2908 } 2909 2910 return new_beacon; 2911 } 2912 2913 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2914 { 2915 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2916 2917 ieee80211_queue_work(&sdata->local->hw, 2918 &sdata->csa_finalize_work); 2919 } 2920 EXPORT_SYMBOL(ieee80211_csa_finish); 2921 2922 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2923 u32 *changed) 2924 { 2925 int err; 2926 2927 switch (sdata->vif.type) { 2928 case NL80211_IFTYPE_AP: 2929 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2930 NULL); 2931 kfree(sdata->u.ap.next_beacon); 2932 sdata->u.ap.next_beacon = NULL; 2933 2934 if (err < 0) 2935 return err; 2936 *changed |= err; 2937 break; 2938 case NL80211_IFTYPE_ADHOC: 2939 err = ieee80211_ibss_finish_csa(sdata); 2940 if (err < 0) 2941 return err; 2942 *changed |= err; 2943 break; 2944 #ifdef CONFIG_MAC80211_MESH 2945 case NL80211_IFTYPE_MESH_POINT: 2946 err = ieee80211_mesh_finish_csa(sdata); 2947 if (err < 0) 2948 return err; 2949 *changed |= err; 2950 break; 2951 #endif 2952 default: 2953 WARN_ON(1); 2954 return -EINVAL; 2955 } 2956 2957 return 0; 2958 } 2959 2960 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2961 { 2962 struct ieee80211_local *local = sdata->local; 2963 u32 changed = 0; 2964 int err; 2965 2966 sdata_assert_lock(sdata); 2967 lockdep_assert_held(&local->mtx); 2968 lockdep_assert_held(&local->chanctx_mtx); 2969 2970 /* 2971 * using reservation isn't immediate as it may be deferred until later 2972 * with multi-vif. once reservation is complete it will re-schedule the 2973 * work with no reserved_chanctx so verify chandef to check if it 2974 * completed successfully 2975 */ 2976 2977 if (sdata->reserved_chanctx) { 2978 /* 2979 * with multi-vif csa driver may call ieee80211_csa_finish() 2980 * many times while waiting for other interfaces to use their 2981 * reservations 2982 */ 2983 if (sdata->reserved_ready) 2984 return 0; 2985 2986 return ieee80211_vif_use_reserved_context(sdata); 2987 } 2988 2989 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2990 &sdata->csa_chandef)) 2991 return -EINVAL; 2992 2993 sdata->vif.csa_active = false; 2994 2995 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2996 if (err) 2997 return err; 2998 2999 ieee80211_bss_info_change_notify(sdata, changed); 3000 3001 if (sdata->csa_block_tx) { 3002 ieee80211_wake_vif_queues(local, sdata, 3003 IEEE80211_QUEUE_STOP_REASON_CSA); 3004 sdata->csa_block_tx = false; 3005 } 3006 3007 err = drv_post_channel_switch(sdata); 3008 if (err) 3009 return err; 3010 3011 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3012 3013 return 0; 3014 } 3015 3016 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3017 { 3018 if (__ieee80211_csa_finalize(sdata)) { 3019 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3020 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3021 GFP_KERNEL); 3022 } 3023 } 3024 3025 void ieee80211_csa_finalize_work(struct work_struct *work) 3026 { 3027 struct ieee80211_sub_if_data *sdata = 3028 container_of(work, struct ieee80211_sub_if_data, 3029 csa_finalize_work); 3030 struct ieee80211_local *local = sdata->local; 3031 3032 sdata_lock(sdata); 3033 mutex_lock(&local->mtx); 3034 mutex_lock(&local->chanctx_mtx); 3035 3036 /* AP might have been stopped while waiting for the lock. */ 3037 if (!sdata->vif.csa_active) 3038 goto unlock; 3039 3040 if (!ieee80211_sdata_running(sdata)) 3041 goto unlock; 3042 3043 ieee80211_csa_finalize(sdata); 3044 3045 unlock: 3046 mutex_unlock(&local->chanctx_mtx); 3047 mutex_unlock(&local->mtx); 3048 sdata_unlock(sdata); 3049 } 3050 3051 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3052 struct cfg80211_csa_settings *params, 3053 u32 *changed) 3054 { 3055 struct ieee80211_csa_settings csa = {}; 3056 int err; 3057 3058 switch (sdata->vif.type) { 3059 case NL80211_IFTYPE_AP: 3060 sdata->u.ap.next_beacon = 3061 cfg80211_beacon_dup(¶ms->beacon_after); 3062 if (!sdata->u.ap.next_beacon) 3063 return -ENOMEM; 3064 3065 /* 3066 * With a count of 0, we don't have to wait for any 3067 * TBTT before switching, so complete the CSA 3068 * immediately. In theory, with a count == 1 we 3069 * should delay the switch until just before the next 3070 * TBTT, but that would complicate things so we switch 3071 * immediately too. If we would delay the switch 3072 * until the next TBTT, we would have to set the probe 3073 * response here. 3074 * 3075 * TODO: A channel switch with count <= 1 without 3076 * sending a CSA action frame is kind of useless, 3077 * because the clients won't know we're changing 3078 * channels. The action frame must be implemented 3079 * either here or in the userspace. 3080 */ 3081 if (params->count <= 1) 3082 break; 3083 3084 if ((params->n_counter_offsets_beacon > 3085 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3086 (params->n_counter_offsets_presp > 3087 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3088 return -EINVAL; 3089 3090 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3091 csa.counter_offsets_presp = params->counter_offsets_presp; 3092 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3093 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3094 csa.count = params->count; 3095 3096 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3097 if (err < 0) { 3098 kfree(sdata->u.ap.next_beacon); 3099 return err; 3100 } 3101 *changed |= err; 3102 3103 break; 3104 case NL80211_IFTYPE_ADHOC: 3105 if (!sdata->vif.bss_conf.ibss_joined) 3106 return -EINVAL; 3107 3108 if (params->chandef.width != sdata->u.ibss.chandef.width) 3109 return -EINVAL; 3110 3111 switch (params->chandef.width) { 3112 case NL80211_CHAN_WIDTH_40: 3113 if (cfg80211_get_chandef_type(¶ms->chandef) != 3114 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3115 return -EINVAL; 3116 case NL80211_CHAN_WIDTH_5: 3117 case NL80211_CHAN_WIDTH_10: 3118 case NL80211_CHAN_WIDTH_20_NOHT: 3119 case NL80211_CHAN_WIDTH_20: 3120 break; 3121 default: 3122 return -EINVAL; 3123 } 3124 3125 /* changes into another band are not supported */ 3126 if (sdata->u.ibss.chandef.chan->band != 3127 params->chandef.chan->band) 3128 return -EINVAL; 3129 3130 /* see comments in the NL80211_IFTYPE_AP block */ 3131 if (params->count > 1) { 3132 err = ieee80211_ibss_csa_beacon(sdata, params); 3133 if (err < 0) 3134 return err; 3135 *changed |= err; 3136 } 3137 3138 ieee80211_send_action_csa(sdata, params); 3139 3140 break; 3141 #ifdef CONFIG_MAC80211_MESH 3142 case NL80211_IFTYPE_MESH_POINT: { 3143 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3144 3145 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3146 return -EINVAL; 3147 3148 /* changes into another band are not supported */ 3149 if (sdata->vif.bss_conf.chandef.chan->band != 3150 params->chandef.chan->band) 3151 return -EINVAL; 3152 3153 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3154 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3155 if (!ifmsh->pre_value) 3156 ifmsh->pre_value = 1; 3157 else 3158 ifmsh->pre_value++; 3159 } 3160 3161 /* see comments in the NL80211_IFTYPE_AP block */ 3162 if (params->count > 1) { 3163 err = ieee80211_mesh_csa_beacon(sdata, params); 3164 if (err < 0) { 3165 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3166 return err; 3167 } 3168 *changed |= err; 3169 } 3170 3171 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3172 ieee80211_send_action_csa(sdata, params); 3173 3174 break; 3175 } 3176 #endif 3177 default: 3178 return -EOPNOTSUPP; 3179 } 3180 3181 return 0; 3182 } 3183 3184 static int 3185 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3186 struct cfg80211_csa_settings *params) 3187 { 3188 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3189 struct ieee80211_local *local = sdata->local; 3190 struct ieee80211_channel_switch ch_switch; 3191 struct ieee80211_chanctx_conf *conf; 3192 struct ieee80211_chanctx *chanctx; 3193 u32 changed = 0; 3194 int err; 3195 3196 sdata_assert_lock(sdata); 3197 lockdep_assert_held(&local->mtx); 3198 3199 if (!list_empty(&local->roc_list) || local->scanning) 3200 return -EBUSY; 3201 3202 if (sdata->wdev.cac_started) 3203 return -EBUSY; 3204 3205 if (cfg80211_chandef_identical(¶ms->chandef, 3206 &sdata->vif.bss_conf.chandef)) 3207 return -EINVAL; 3208 3209 /* don't allow another channel switch if one is already active. */ 3210 if (sdata->vif.csa_active) 3211 return -EBUSY; 3212 3213 mutex_lock(&local->chanctx_mtx); 3214 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3215 lockdep_is_held(&local->chanctx_mtx)); 3216 if (!conf) { 3217 err = -EBUSY; 3218 goto out; 3219 } 3220 3221 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3222 if (!chanctx) { 3223 err = -EBUSY; 3224 goto out; 3225 } 3226 3227 ch_switch.timestamp = 0; 3228 ch_switch.device_timestamp = 0; 3229 ch_switch.block_tx = params->block_tx; 3230 ch_switch.chandef = params->chandef; 3231 ch_switch.count = params->count; 3232 3233 err = drv_pre_channel_switch(sdata, &ch_switch); 3234 if (err) 3235 goto out; 3236 3237 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3238 chanctx->mode, 3239 params->radar_required); 3240 if (err) 3241 goto out; 3242 3243 /* if reservation is invalid then this will fail */ 3244 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3245 if (err) { 3246 ieee80211_vif_unreserve_chanctx(sdata); 3247 goto out; 3248 } 3249 3250 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3251 if (err) { 3252 ieee80211_vif_unreserve_chanctx(sdata); 3253 goto out; 3254 } 3255 3256 sdata->csa_chandef = params->chandef; 3257 sdata->csa_block_tx = params->block_tx; 3258 sdata->vif.csa_active = true; 3259 3260 if (sdata->csa_block_tx) 3261 ieee80211_stop_vif_queues(local, sdata, 3262 IEEE80211_QUEUE_STOP_REASON_CSA); 3263 3264 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3265 params->count); 3266 3267 if (changed) { 3268 ieee80211_bss_info_change_notify(sdata, changed); 3269 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3270 } else { 3271 /* if the beacon didn't change, we can finalize immediately */ 3272 ieee80211_csa_finalize(sdata); 3273 } 3274 3275 out: 3276 mutex_unlock(&local->chanctx_mtx); 3277 return err; 3278 } 3279 3280 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3281 struct cfg80211_csa_settings *params) 3282 { 3283 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3284 struct ieee80211_local *local = sdata->local; 3285 int err; 3286 3287 mutex_lock(&local->mtx); 3288 err = __ieee80211_channel_switch(wiphy, dev, params); 3289 mutex_unlock(&local->mtx); 3290 3291 return err; 3292 } 3293 3294 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local, 3295 struct sk_buff *skb, u64 *cookie, 3296 gfp_t gfp) 3297 { 3298 unsigned long spin_flags; 3299 struct sk_buff *ack_skb; 3300 int id; 3301 3302 ack_skb = skb_copy(skb, gfp); 3303 if (!ack_skb) 3304 return ERR_PTR(-ENOMEM); 3305 3306 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3307 id = idr_alloc(&local->ack_status_frames, ack_skb, 3308 1, 0x10000, GFP_ATOMIC); 3309 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3310 3311 if (id < 0) { 3312 kfree_skb(ack_skb); 3313 return ERR_PTR(-ENOMEM); 3314 } 3315 3316 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3317 3318 *cookie = ieee80211_mgmt_tx_cookie(local); 3319 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3320 3321 return ack_skb; 3322 } 3323 3324 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3325 struct cfg80211_mgmt_tx_params *params, 3326 u64 *cookie) 3327 { 3328 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3329 struct ieee80211_local *local = sdata->local; 3330 struct sk_buff *skb, *ack_skb; 3331 struct sta_info *sta; 3332 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3333 bool need_offchan = false; 3334 u32 flags; 3335 int ret; 3336 u8 *data; 3337 3338 if (params->dont_wait_for_ack) 3339 flags = IEEE80211_TX_CTL_NO_ACK; 3340 else 3341 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3342 IEEE80211_TX_CTL_REQ_TX_STATUS; 3343 3344 if (params->no_cck) 3345 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3346 3347 switch (sdata->vif.type) { 3348 case NL80211_IFTYPE_ADHOC: 3349 if (!sdata->vif.bss_conf.ibss_joined) 3350 need_offchan = true; 3351 /* fall through */ 3352 #ifdef CONFIG_MAC80211_MESH 3353 case NL80211_IFTYPE_MESH_POINT: 3354 if (ieee80211_vif_is_mesh(&sdata->vif) && 3355 !sdata->u.mesh.mesh_id_len) 3356 need_offchan = true; 3357 /* fall through */ 3358 #endif 3359 case NL80211_IFTYPE_AP: 3360 case NL80211_IFTYPE_AP_VLAN: 3361 case NL80211_IFTYPE_P2P_GO: 3362 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3363 !ieee80211_vif_is_mesh(&sdata->vif) && 3364 !rcu_access_pointer(sdata->bss->beacon)) 3365 need_offchan = true; 3366 if (!ieee80211_is_action(mgmt->frame_control) || 3367 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3368 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3369 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3370 break; 3371 rcu_read_lock(); 3372 sta = sta_info_get(sdata, mgmt->da); 3373 rcu_read_unlock(); 3374 if (!sta) 3375 return -ENOLINK; 3376 break; 3377 case NL80211_IFTYPE_STATION: 3378 case NL80211_IFTYPE_P2P_CLIENT: 3379 sdata_lock(sdata); 3380 if (!sdata->u.mgd.associated || 3381 (params->offchan && params->wait && 3382 local->ops->remain_on_channel && 3383 memcmp(sdata->u.mgd.associated->bssid, 3384 mgmt->bssid, ETH_ALEN))) 3385 need_offchan = true; 3386 sdata_unlock(sdata); 3387 break; 3388 case NL80211_IFTYPE_P2P_DEVICE: 3389 need_offchan = true; 3390 break; 3391 default: 3392 return -EOPNOTSUPP; 3393 } 3394 3395 /* configurations requiring offchan cannot work if no channel has been 3396 * specified 3397 */ 3398 if (need_offchan && !params->chan) 3399 return -EINVAL; 3400 3401 mutex_lock(&local->mtx); 3402 3403 /* Check if the operating channel is the requested channel */ 3404 if (!need_offchan) { 3405 struct ieee80211_chanctx_conf *chanctx_conf; 3406 3407 rcu_read_lock(); 3408 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3409 3410 if (chanctx_conf) { 3411 need_offchan = params->chan && 3412 (params->chan != 3413 chanctx_conf->def.chan); 3414 } else if (!params->chan) { 3415 ret = -EINVAL; 3416 rcu_read_unlock(); 3417 goto out_unlock; 3418 } else { 3419 need_offchan = true; 3420 } 3421 rcu_read_unlock(); 3422 } 3423 3424 if (need_offchan && !params->offchan) { 3425 ret = -EBUSY; 3426 goto out_unlock; 3427 } 3428 3429 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3430 if (!skb) { 3431 ret = -ENOMEM; 3432 goto out_unlock; 3433 } 3434 skb_reserve(skb, local->hw.extra_tx_headroom); 3435 3436 data = skb_put(skb, params->len); 3437 memcpy(data, params->buf, params->len); 3438 3439 /* Update CSA counters */ 3440 if (sdata->vif.csa_active && 3441 (sdata->vif.type == NL80211_IFTYPE_AP || 3442 sdata->vif.type == NL80211_IFTYPE_MESH_POINT || 3443 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3444 params->n_csa_offsets) { 3445 int i; 3446 struct beacon_data *beacon = NULL; 3447 3448 rcu_read_lock(); 3449 3450 if (sdata->vif.type == NL80211_IFTYPE_AP) 3451 beacon = rcu_dereference(sdata->u.ap.beacon); 3452 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3453 beacon = rcu_dereference(sdata->u.ibss.presp); 3454 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3455 beacon = rcu_dereference(sdata->u.mesh.beacon); 3456 3457 if (beacon) 3458 for (i = 0; i < params->n_csa_offsets; i++) 3459 data[params->csa_offsets[i]] = 3460 beacon->csa_current_counter; 3461 3462 rcu_read_unlock(); 3463 } 3464 3465 IEEE80211_SKB_CB(skb)->flags = flags; 3466 3467 skb->dev = sdata->dev; 3468 3469 if (!params->dont_wait_for_ack) { 3470 /* make a copy to preserve the frame contents 3471 * in case of encryption. 3472 */ 3473 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, 3474 GFP_KERNEL); 3475 if (IS_ERR(ack_skb)) { 3476 ret = PTR_ERR(ack_skb); 3477 kfree_skb(skb); 3478 goto out_unlock; 3479 } 3480 } else { 3481 /* for cookie below */ 3482 ack_skb = skb; 3483 } 3484 3485 if (!need_offchan) { 3486 ieee80211_tx_skb(sdata, skb); 3487 ret = 0; 3488 goto out_unlock; 3489 } 3490 3491 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3492 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3493 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 3494 IEEE80211_SKB_CB(skb)->hw_queue = 3495 local->hw.offchannel_tx_hw_queue; 3496 3497 /* This will handle all kinds of coalescing and immediate TX */ 3498 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3499 params->wait, cookie, skb, 3500 IEEE80211_ROC_TYPE_MGMT_TX); 3501 if (ret) 3502 kfree_skb(skb); 3503 out_unlock: 3504 mutex_unlock(&local->mtx); 3505 return ret; 3506 } 3507 3508 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3509 struct wireless_dev *wdev, 3510 u64 cookie) 3511 { 3512 struct ieee80211_local *local = wiphy_priv(wiphy); 3513 3514 return ieee80211_cancel_roc(local, cookie, true); 3515 } 3516 3517 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3518 struct wireless_dev *wdev, 3519 u16 frame_type, bool reg) 3520 { 3521 struct ieee80211_local *local = wiphy_priv(wiphy); 3522 3523 switch (frame_type) { 3524 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3525 if (reg) 3526 local->probe_req_reg++; 3527 else 3528 local->probe_req_reg--; 3529 3530 if (!local->open_count) 3531 break; 3532 3533 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3534 break; 3535 default: 3536 break; 3537 } 3538 } 3539 3540 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3541 { 3542 struct ieee80211_local *local = wiphy_priv(wiphy); 3543 3544 if (local->started) 3545 return -EOPNOTSUPP; 3546 3547 return drv_set_antenna(local, tx_ant, rx_ant); 3548 } 3549 3550 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3551 { 3552 struct ieee80211_local *local = wiphy_priv(wiphy); 3553 3554 return drv_get_antenna(local, tx_ant, rx_ant); 3555 } 3556 3557 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3558 struct net_device *dev, 3559 struct cfg80211_gtk_rekey_data *data) 3560 { 3561 struct ieee80211_local *local = wiphy_priv(wiphy); 3562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3563 3564 if (!local->ops->set_rekey_data) 3565 return -EOPNOTSUPP; 3566 3567 drv_set_rekey_data(local, sdata, data); 3568 3569 return 0; 3570 } 3571 3572 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3573 const u8 *peer, u64 *cookie) 3574 { 3575 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3576 struct ieee80211_local *local = sdata->local; 3577 struct ieee80211_qos_hdr *nullfunc; 3578 struct sk_buff *skb, *ack_skb; 3579 int size = sizeof(*nullfunc); 3580 __le16 fc; 3581 bool qos; 3582 struct ieee80211_tx_info *info; 3583 struct sta_info *sta; 3584 struct ieee80211_chanctx_conf *chanctx_conf; 3585 enum ieee80211_band band; 3586 int ret; 3587 3588 /* the lock is needed to assign the cookie later */ 3589 mutex_lock(&local->mtx); 3590 3591 rcu_read_lock(); 3592 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3593 if (WARN_ON(!chanctx_conf)) { 3594 ret = -EINVAL; 3595 goto unlock; 3596 } 3597 band = chanctx_conf->def.chan->band; 3598 sta = sta_info_get_bss(sdata, peer); 3599 if (sta) { 3600 qos = sta->sta.wme; 3601 } else { 3602 ret = -ENOLINK; 3603 goto unlock; 3604 } 3605 3606 if (qos) { 3607 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3608 IEEE80211_STYPE_QOS_NULLFUNC | 3609 IEEE80211_FCTL_FROMDS); 3610 } else { 3611 size -= 2; 3612 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3613 IEEE80211_STYPE_NULLFUNC | 3614 IEEE80211_FCTL_FROMDS); 3615 } 3616 3617 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3618 if (!skb) { 3619 ret = -ENOMEM; 3620 goto unlock; 3621 } 3622 3623 skb->dev = dev; 3624 3625 skb_reserve(skb, local->hw.extra_tx_headroom); 3626 3627 nullfunc = (void *) skb_put(skb, size); 3628 nullfunc->frame_control = fc; 3629 nullfunc->duration_id = 0; 3630 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3631 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3632 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3633 nullfunc->seq_ctrl = 0; 3634 3635 info = IEEE80211_SKB_CB(skb); 3636 3637 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3638 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3639 info->band = band; 3640 3641 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3642 skb->priority = 7; 3643 if (qos) 3644 nullfunc->qos_ctrl = cpu_to_le16(7); 3645 3646 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC); 3647 if (IS_ERR(ack_skb)) { 3648 kfree_skb(skb); 3649 ret = PTR_ERR(ack_skb); 3650 goto unlock; 3651 } 3652 3653 local_bh_disable(); 3654 ieee80211_xmit(sdata, sta, skb); 3655 local_bh_enable(); 3656 3657 ret = 0; 3658 unlock: 3659 rcu_read_unlock(); 3660 mutex_unlock(&local->mtx); 3661 3662 return ret; 3663 } 3664 3665 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3666 struct wireless_dev *wdev, 3667 struct cfg80211_chan_def *chandef) 3668 { 3669 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3670 struct ieee80211_local *local = wiphy_priv(wiphy); 3671 struct ieee80211_chanctx_conf *chanctx_conf; 3672 int ret = -ENODATA; 3673 3674 rcu_read_lock(); 3675 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3676 if (chanctx_conf) { 3677 *chandef = sdata->vif.bss_conf.chandef; 3678 ret = 0; 3679 } else if (local->open_count > 0 && 3680 local->open_count == local->monitors && 3681 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3682 if (local->use_chanctx) 3683 *chandef = local->monitor_chandef; 3684 else 3685 *chandef = local->_oper_chandef; 3686 ret = 0; 3687 } 3688 rcu_read_unlock(); 3689 3690 return ret; 3691 } 3692 3693 #ifdef CONFIG_PM 3694 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3695 { 3696 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3697 } 3698 #endif 3699 3700 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3701 struct net_device *dev, 3702 struct cfg80211_qos_map *qos_map) 3703 { 3704 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3705 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3706 3707 if (qos_map) { 3708 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3709 if (!new_qos_map) 3710 return -ENOMEM; 3711 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3712 } else { 3713 /* A NULL qos_map was passed to disable QoS mapping */ 3714 new_qos_map = NULL; 3715 } 3716 3717 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3718 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3719 if (old_qos_map) 3720 kfree_rcu(old_qos_map, rcu_head); 3721 3722 return 0; 3723 } 3724 3725 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3726 struct net_device *dev, 3727 struct cfg80211_chan_def *chandef) 3728 { 3729 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3730 int ret; 3731 u32 changed = 0; 3732 3733 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3734 if (ret == 0) 3735 ieee80211_bss_info_change_notify(sdata, changed); 3736 3737 return ret; 3738 } 3739 3740 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3741 u8 tsid, const u8 *peer, u8 up, 3742 u16 admitted_time) 3743 { 3744 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3745 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3746 int ac = ieee802_1d_to_ac[up]; 3747 3748 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3749 return -EOPNOTSUPP; 3750 3751 if (!(sdata->wmm_acm & BIT(up))) 3752 return -EINVAL; 3753 3754 if (ifmgd->tx_tspec[ac].admitted_time) 3755 return -EBUSY; 3756 3757 if (admitted_time) { 3758 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3759 ifmgd->tx_tspec[ac].tsid = tsid; 3760 ifmgd->tx_tspec[ac].up = up; 3761 } 3762 3763 return 0; 3764 } 3765 3766 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3767 u8 tsid, const u8 *peer) 3768 { 3769 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3770 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3771 struct ieee80211_local *local = wiphy_priv(wiphy); 3772 int ac; 3773 3774 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3775 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3776 3777 /* skip unused entries */ 3778 if (!tx_tspec->admitted_time) 3779 continue; 3780 3781 if (tx_tspec->tsid != tsid) 3782 continue; 3783 3784 /* due to this new packets will be reassigned to non-ACM ACs */ 3785 tx_tspec->up = -1; 3786 3787 /* Make sure that all packets have been sent to avoid to 3788 * restore the QoS params on packets that are still on the 3789 * queues. 3790 */ 3791 synchronize_net(); 3792 ieee80211_flush_queues(local, sdata, false); 3793 3794 /* restore the normal QoS parameters 3795 * (unconditionally to avoid races) 3796 */ 3797 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3798 tx_tspec->downgraded = false; 3799 ieee80211_sta_handle_tspec_ac_params(sdata); 3800 3801 /* finally clear all the data */ 3802 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3803 3804 return 0; 3805 } 3806 3807 return -ENOENT; 3808 } 3809 3810 const struct cfg80211_ops mac80211_config_ops = { 3811 .add_virtual_intf = ieee80211_add_iface, 3812 .del_virtual_intf = ieee80211_del_iface, 3813 .change_virtual_intf = ieee80211_change_iface, 3814 .start_p2p_device = ieee80211_start_p2p_device, 3815 .stop_p2p_device = ieee80211_stop_p2p_device, 3816 .add_key = ieee80211_add_key, 3817 .del_key = ieee80211_del_key, 3818 .get_key = ieee80211_get_key, 3819 .set_default_key = ieee80211_config_default_key, 3820 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3821 .start_ap = ieee80211_start_ap, 3822 .change_beacon = ieee80211_change_beacon, 3823 .stop_ap = ieee80211_stop_ap, 3824 .add_station = ieee80211_add_station, 3825 .del_station = ieee80211_del_station, 3826 .change_station = ieee80211_change_station, 3827 .get_station = ieee80211_get_station, 3828 .dump_station = ieee80211_dump_station, 3829 .dump_survey = ieee80211_dump_survey, 3830 #ifdef CONFIG_MAC80211_MESH 3831 .add_mpath = ieee80211_add_mpath, 3832 .del_mpath = ieee80211_del_mpath, 3833 .change_mpath = ieee80211_change_mpath, 3834 .get_mpath = ieee80211_get_mpath, 3835 .dump_mpath = ieee80211_dump_mpath, 3836 .get_mpp = ieee80211_get_mpp, 3837 .dump_mpp = ieee80211_dump_mpp, 3838 .update_mesh_config = ieee80211_update_mesh_config, 3839 .get_mesh_config = ieee80211_get_mesh_config, 3840 .join_mesh = ieee80211_join_mesh, 3841 .leave_mesh = ieee80211_leave_mesh, 3842 #endif 3843 .join_ocb = ieee80211_join_ocb, 3844 .leave_ocb = ieee80211_leave_ocb, 3845 .change_bss = ieee80211_change_bss, 3846 .set_txq_params = ieee80211_set_txq_params, 3847 .set_monitor_channel = ieee80211_set_monitor_channel, 3848 .suspend = ieee80211_suspend, 3849 .resume = ieee80211_resume, 3850 .scan = ieee80211_scan, 3851 .sched_scan_start = ieee80211_sched_scan_start, 3852 .sched_scan_stop = ieee80211_sched_scan_stop, 3853 .auth = ieee80211_auth, 3854 .assoc = ieee80211_assoc, 3855 .deauth = ieee80211_deauth, 3856 .disassoc = ieee80211_disassoc, 3857 .join_ibss = ieee80211_join_ibss, 3858 .leave_ibss = ieee80211_leave_ibss, 3859 .set_mcast_rate = ieee80211_set_mcast_rate, 3860 .set_wiphy_params = ieee80211_set_wiphy_params, 3861 .set_tx_power = ieee80211_set_tx_power, 3862 .get_tx_power = ieee80211_get_tx_power, 3863 .set_wds_peer = ieee80211_set_wds_peer, 3864 .rfkill_poll = ieee80211_rfkill_poll, 3865 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3866 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3867 .set_power_mgmt = ieee80211_set_power_mgmt, 3868 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3869 .remain_on_channel = ieee80211_remain_on_channel, 3870 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3871 .mgmt_tx = ieee80211_mgmt_tx, 3872 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3873 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3874 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3875 .set_antenna = ieee80211_set_antenna, 3876 .get_antenna = ieee80211_get_antenna, 3877 .set_rekey_data = ieee80211_set_rekey_data, 3878 .tdls_oper = ieee80211_tdls_oper, 3879 .tdls_mgmt = ieee80211_tdls_mgmt, 3880 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3881 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3882 .probe_client = ieee80211_probe_client, 3883 .set_noack_map = ieee80211_set_noack_map, 3884 #ifdef CONFIG_PM 3885 .set_wakeup = ieee80211_set_wakeup, 3886 #endif 3887 .get_channel = ieee80211_cfg_get_channel, 3888 .start_radar_detection = ieee80211_start_radar_detection, 3889 .channel_switch = ieee80211_channel_switch, 3890 .set_qos_map = ieee80211_set_qos_map, 3891 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3892 .add_tx_ts = ieee80211_add_tx_ts, 3893 .del_tx_ts = ieee80211_del_tx_ts, 3894 }; 3895