1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 24 const char *name, 25 enum nl80211_iftype type, 26 u32 *flags, 27 struct vif_params *params) 28 { 29 struct ieee80211_local *local = wiphy_priv(wiphy); 30 struct wireless_dev *wdev; 31 struct ieee80211_sub_if_data *sdata; 32 int err; 33 34 err = ieee80211_if_add(local, name, &wdev, type, params); 35 if (err) 36 return ERR_PTR(err); 37 38 if (type == NL80211_IFTYPE_MONITOR && flags) { 39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 40 sdata->u.mntr_flags = *flags; 41 } 42 43 return wdev; 44 } 45 46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 47 { 48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 49 50 return 0; 51 } 52 53 static int ieee80211_change_iface(struct wiphy *wiphy, 54 struct net_device *dev, 55 enum nl80211_iftype type, u32 *flags, 56 struct vif_params *params) 57 { 58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 59 int ret; 60 61 ret = ieee80211_if_change_type(sdata, type); 62 if (ret) 63 return ret; 64 65 if (type == NL80211_IFTYPE_AP_VLAN && 66 params && params->use_4addr == 0) 67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 68 else if (type == NL80211_IFTYPE_STATION && 69 params && params->use_4addr >= 0) 70 sdata->u.mgd.use_4addr = params->use_4addr; 71 72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 73 struct ieee80211_local *local = sdata->local; 74 75 if (ieee80211_sdata_running(sdata)) { 76 /* 77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be 78 * changed while the interface is up. 79 * Else we would need to add a lot of cruft 80 * to update everything: 81 * cooked_mntrs, monitor and all fif_* counters 82 * reconfigure hardware 83 */ 84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) != 85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) 86 return -EBUSY; 87 88 ieee80211_adjust_monitor_flags(sdata, -1); 89 sdata->u.mntr_flags = *flags; 90 ieee80211_adjust_monitor_flags(sdata, 1); 91 92 ieee80211_configure_filter(local); 93 } else { 94 /* 95 * Because the interface is down, ieee80211_do_stop 96 * and ieee80211_do_open take care of "everything" 97 * mentioned in the comment above. 98 */ 99 sdata->u.mntr_flags = *flags; 100 } 101 } 102 103 return 0; 104 } 105 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 107 struct wireless_dev *wdev) 108 { 109 return ieee80211_do_open(wdev, true); 110 } 111 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 113 struct wireless_dev *wdev) 114 { 115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 116 } 117 118 static int ieee80211_set_noack_map(struct wiphy *wiphy, 119 struct net_device *dev, 120 u16 noack_map) 121 { 122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 123 124 sdata->noack_map = noack_map; 125 return 0; 126 } 127 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 129 u8 key_idx, bool pairwise, const u8 *mac_addr, 130 struct key_params *params) 131 { 132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 133 struct sta_info *sta = NULL; 134 struct ieee80211_key *key; 135 int err; 136 137 if (!ieee80211_sdata_running(sdata)) 138 return -ENETDOWN; 139 140 /* reject WEP and TKIP keys if WEP failed to initialize */ 141 switch (params->cipher) { 142 case WLAN_CIPHER_SUITE_WEP40: 143 case WLAN_CIPHER_SUITE_TKIP: 144 case WLAN_CIPHER_SUITE_WEP104: 145 if (IS_ERR(sdata->local->wep_tx_tfm)) 146 return -EINVAL; 147 break; 148 default: 149 break; 150 } 151 152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 153 params->key, params->seq_len, params->seq); 154 if (IS_ERR(key)) 155 return PTR_ERR(key); 156 157 if (pairwise) 158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 159 160 mutex_lock(&sdata->local->sta_mtx); 161 162 if (mac_addr) { 163 if (ieee80211_vif_is_mesh(&sdata->vif)) 164 sta = sta_info_get(sdata, mac_addr); 165 else 166 sta = sta_info_get_bss(sdata, mac_addr); 167 /* 168 * The ASSOC test makes sure the driver is ready to 169 * receive the key. When wpa_supplicant has roamed 170 * using FT, it attempts to set the key before 171 * association has completed, this rejects that attempt 172 * so it will set the key again after assocation. 173 * 174 * TODO: accept the key if we have a station entry and 175 * add it to the device after the station. 176 */ 177 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 178 ieee80211_key_free(sdata->local, key); 179 err = -ENOENT; 180 goto out_unlock; 181 } 182 } 183 184 switch (sdata->vif.type) { 185 case NL80211_IFTYPE_STATION: 186 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 187 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 188 break; 189 case NL80211_IFTYPE_AP: 190 case NL80211_IFTYPE_AP_VLAN: 191 /* Keys without a station are used for TX only */ 192 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 193 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 194 break; 195 case NL80211_IFTYPE_ADHOC: 196 /* no MFP (yet) */ 197 break; 198 case NL80211_IFTYPE_MESH_POINT: 199 #ifdef CONFIG_MAC80211_MESH 200 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 201 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 202 break; 203 #endif 204 case NL80211_IFTYPE_WDS: 205 case NL80211_IFTYPE_MONITOR: 206 case NL80211_IFTYPE_P2P_DEVICE: 207 case NL80211_IFTYPE_UNSPECIFIED: 208 case NUM_NL80211_IFTYPES: 209 case NL80211_IFTYPE_P2P_CLIENT: 210 case NL80211_IFTYPE_P2P_GO: 211 /* shouldn't happen */ 212 WARN_ON_ONCE(1); 213 break; 214 } 215 216 err = ieee80211_key_link(key, sdata, sta); 217 if (err) 218 ieee80211_key_free(sdata->local, key); 219 220 out_unlock: 221 mutex_unlock(&sdata->local->sta_mtx); 222 223 return err; 224 } 225 226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 227 u8 key_idx, bool pairwise, const u8 *mac_addr) 228 { 229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 230 struct ieee80211_local *local = sdata->local; 231 struct sta_info *sta; 232 struct ieee80211_key *key = NULL; 233 int ret; 234 235 mutex_lock(&local->sta_mtx); 236 mutex_lock(&local->key_mtx); 237 238 if (mac_addr) { 239 ret = -ENOENT; 240 241 sta = sta_info_get_bss(sdata, mac_addr); 242 if (!sta) 243 goto out_unlock; 244 245 if (pairwise) 246 key = key_mtx_dereference(local, sta->ptk); 247 else 248 key = key_mtx_dereference(local, sta->gtk[key_idx]); 249 } else 250 key = key_mtx_dereference(local, sdata->keys[key_idx]); 251 252 if (!key) { 253 ret = -ENOENT; 254 goto out_unlock; 255 } 256 257 __ieee80211_key_free(key); 258 259 ret = 0; 260 out_unlock: 261 mutex_unlock(&local->key_mtx); 262 mutex_unlock(&local->sta_mtx); 263 264 return ret; 265 } 266 267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 268 u8 key_idx, bool pairwise, const u8 *mac_addr, 269 void *cookie, 270 void (*callback)(void *cookie, 271 struct key_params *params)) 272 { 273 struct ieee80211_sub_if_data *sdata; 274 struct sta_info *sta = NULL; 275 u8 seq[6] = {0}; 276 struct key_params params; 277 struct ieee80211_key *key = NULL; 278 u64 pn64; 279 u32 iv32; 280 u16 iv16; 281 int err = -ENOENT; 282 283 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 284 285 rcu_read_lock(); 286 287 if (mac_addr) { 288 sta = sta_info_get_bss(sdata, mac_addr); 289 if (!sta) 290 goto out; 291 292 if (pairwise) 293 key = rcu_dereference(sta->ptk); 294 else if (key_idx < NUM_DEFAULT_KEYS) 295 key = rcu_dereference(sta->gtk[key_idx]); 296 } else 297 key = rcu_dereference(sdata->keys[key_idx]); 298 299 if (!key) 300 goto out; 301 302 memset(¶ms, 0, sizeof(params)); 303 304 params.cipher = key->conf.cipher; 305 306 switch (key->conf.cipher) { 307 case WLAN_CIPHER_SUITE_TKIP: 308 iv32 = key->u.tkip.tx.iv32; 309 iv16 = key->u.tkip.tx.iv16; 310 311 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 312 drv_get_tkip_seq(sdata->local, 313 key->conf.hw_key_idx, 314 &iv32, &iv16); 315 316 seq[0] = iv16 & 0xff; 317 seq[1] = (iv16 >> 8) & 0xff; 318 seq[2] = iv32 & 0xff; 319 seq[3] = (iv32 >> 8) & 0xff; 320 seq[4] = (iv32 >> 16) & 0xff; 321 seq[5] = (iv32 >> 24) & 0xff; 322 params.seq = seq; 323 params.seq_len = 6; 324 break; 325 case WLAN_CIPHER_SUITE_CCMP: 326 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 327 seq[0] = pn64; 328 seq[1] = pn64 >> 8; 329 seq[2] = pn64 >> 16; 330 seq[3] = pn64 >> 24; 331 seq[4] = pn64 >> 32; 332 seq[5] = pn64 >> 40; 333 params.seq = seq; 334 params.seq_len = 6; 335 break; 336 case WLAN_CIPHER_SUITE_AES_CMAC: 337 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 338 seq[0] = pn64; 339 seq[1] = pn64 >> 8; 340 seq[2] = pn64 >> 16; 341 seq[3] = pn64 >> 24; 342 seq[4] = pn64 >> 32; 343 seq[5] = pn64 >> 40; 344 params.seq = seq; 345 params.seq_len = 6; 346 break; 347 } 348 349 params.key = key->conf.key; 350 params.key_len = key->conf.keylen; 351 352 callback(cookie, ¶ms); 353 err = 0; 354 355 out: 356 rcu_read_unlock(); 357 return err; 358 } 359 360 static int ieee80211_config_default_key(struct wiphy *wiphy, 361 struct net_device *dev, 362 u8 key_idx, bool uni, 363 bool multi) 364 { 365 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 366 367 ieee80211_set_default_key(sdata, key_idx, uni, multi); 368 369 return 0; 370 } 371 372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 373 struct net_device *dev, 374 u8 key_idx) 375 { 376 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 377 378 ieee80211_set_default_mgmt_key(sdata, key_idx); 379 380 return 0; 381 } 382 383 void sta_set_rate_info_tx(struct sta_info *sta, 384 const struct ieee80211_tx_rate *rate, 385 struct rate_info *rinfo) 386 { 387 rinfo->flags = 0; 388 if (rate->flags & IEEE80211_TX_RC_MCS) { 389 rinfo->flags |= RATE_INFO_FLAGS_MCS; 390 rinfo->mcs = rate->idx; 391 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 392 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 393 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 394 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 395 } else { 396 struct ieee80211_supported_band *sband; 397 sband = sta->local->hw.wiphy->bands[ 398 ieee80211_get_sdata_band(sta->sdata)]; 399 rinfo->legacy = sband->bitrates[rate->idx].bitrate; 400 } 401 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 402 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 403 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 404 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 405 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 406 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 407 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 408 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 409 } 410 411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 412 { 413 rinfo->flags = 0; 414 415 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 416 rinfo->flags |= RATE_INFO_FLAGS_MCS; 417 rinfo->mcs = sta->last_rx_rate_idx; 418 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 419 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 420 rinfo->nss = sta->last_rx_rate_vht_nss; 421 rinfo->mcs = sta->last_rx_rate_idx; 422 } else { 423 struct ieee80211_supported_band *sband; 424 425 sband = sta->local->hw.wiphy->bands[ 426 ieee80211_get_sdata_band(sta->sdata)]; 427 rinfo->legacy = 428 sband->bitrates[sta->last_rx_rate_idx].bitrate; 429 } 430 431 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 432 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 433 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 435 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 436 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 437 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 438 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 439 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 440 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 441 } 442 443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 444 { 445 struct ieee80211_sub_if_data *sdata = sta->sdata; 446 struct ieee80211_local *local = sdata->local; 447 struct timespec uptime; 448 449 sinfo->generation = sdata->local->sta_generation; 450 451 sinfo->filled = STATION_INFO_INACTIVE_TIME | 452 STATION_INFO_RX_BYTES | 453 STATION_INFO_TX_BYTES | 454 STATION_INFO_RX_PACKETS | 455 STATION_INFO_TX_PACKETS | 456 STATION_INFO_TX_RETRIES | 457 STATION_INFO_TX_FAILED | 458 STATION_INFO_TX_BITRATE | 459 STATION_INFO_RX_BITRATE | 460 STATION_INFO_RX_DROP_MISC | 461 STATION_INFO_BSS_PARAM | 462 STATION_INFO_CONNECTED_TIME | 463 STATION_INFO_STA_FLAGS | 464 STATION_INFO_BEACON_LOSS_COUNT; 465 466 do_posix_clock_monotonic_gettime(&uptime); 467 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 468 469 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 470 sinfo->rx_bytes = sta->rx_bytes; 471 sinfo->tx_bytes = sta->tx_bytes; 472 sinfo->rx_packets = sta->rx_packets; 473 sinfo->tx_packets = sta->tx_packets; 474 sinfo->tx_retries = sta->tx_retry_count; 475 sinfo->tx_failed = sta->tx_retry_failed; 476 sinfo->rx_dropped_misc = sta->rx_dropped; 477 sinfo->beacon_loss_count = sta->beacon_loss_count; 478 479 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 480 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 481 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 482 if (!local->ops->get_rssi || 483 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 484 sinfo->signal = (s8)sta->last_signal; 485 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 486 } 487 488 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 489 sta_set_rate_info_rx(sta, &sinfo->rxrate); 490 491 if (ieee80211_vif_is_mesh(&sdata->vif)) { 492 #ifdef CONFIG_MAC80211_MESH 493 sinfo->filled |= STATION_INFO_LLID | 494 STATION_INFO_PLID | 495 STATION_INFO_PLINK_STATE; 496 497 sinfo->llid = le16_to_cpu(sta->llid); 498 sinfo->plid = le16_to_cpu(sta->plid); 499 sinfo->plink_state = sta->plink_state; 500 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 501 sinfo->filled |= STATION_INFO_T_OFFSET; 502 sinfo->t_offset = sta->t_offset; 503 } 504 #endif 505 } 506 507 sinfo->bss_param.flags = 0; 508 if (sdata->vif.bss_conf.use_cts_prot) 509 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 510 if (sdata->vif.bss_conf.use_short_preamble) 511 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 512 if (sdata->vif.bss_conf.use_short_slot) 513 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 514 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 515 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 516 517 sinfo->sta_flags.set = 0; 518 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 519 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 520 BIT(NL80211_STA_FLAG_WME) | 521 BIT(NL80211_STA_FLAG_MFP) | 522 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 523 BIT(NL80211_STA_FLAG_TDLS_PEER); 524 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 525 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 526 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 527 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 528 if (test_sta_flag(sta, WLAN_STA_WME)) 529 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 530 if (test_sta_flag(sta, WLAN_STA_MFP)) 531 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 532 if (test_sta_flag(sta, WLAN_STA_AUTH)) 533 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 534 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 535 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 536 } 537 538 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 539 "rx_packets", "rx_bytes", "wep_weak_iv_count", 540 "rx_duplicates", "rx_fragments", "rx_dropped", 541 "tx_packets", "tx_bytes", "tx_fragments", 542 "tx_filtered", "tx_retry_failed", "tx_retries", 543 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 544 "channel", "noise", "ch_time", "ch_time_busy", 545 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 546 }; 547 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 548 549 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 550 struct net_device *dev, 551 int sset) 552 { 553 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 554 int rv = 0; 555 556 if (sset == ETH_SS_STATS) 557 rv += STA_STATS_LEN; 558 559 rv += drv_get_et_sset_count(sdata, sset); 560 561 if (rv == 0) 562 return -EOPNOTSUPP; 563 return rv; 564 } 565 566 static void ieee80211_get_et_stats(struct wiphy *wiphy, 567 struct net_device *dev, 568 struct ethtool_stats *stats, 569 u64 *data) 570 { 571 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 572 struct ieee80211_chanctx_conf *chanctx_conf; 573 struct ieee80211_channel *channel; 574 struct sta_info *sta; 575 struct ieee80211_local *local = sdata->local; 576 struct station_info sinfo; 577 struct survey_info survey; 578 int i, q; 579 #define STA_STATS_SURVEY_LEN 7 580 581 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 582 583 #define ADD_STA_STATS(sta) \ 584 do { \ 585 data[i++] += sta->rx_packets; \ 586 data[i++] += sta->rx_bytes; \ 587 data[i++] += sta->wep_weak_iv_count; \ 588 data[i++] += sta->num_duplicates; \ 589 data[i++] += sta->rx_fragments; \ 590 data[i++] += sta->rx_dropped; \ 591 \ 592 data[i++] += sta->tx_packets; \ 593 data[i++] += sta->tx_bytes; \ 594 data[i++] += sta->tx_fragments; \ 595 data[i++] += sta->tx_filtered_count; \ 596 data[i++] += sta->tx_retry_failed; \ 597 data[i++] += sta->tx_retry_count; \ 598 data[i++] += sta->beacon_loss_count; \ 599 } while (0) 600 601 /* For Managed stations, find the single station based on BSSID 602 * and use that. For interface types, iterate through all available 603 * stations and add stats for any station that is assigned to this 604 * network device. 605 */ 606 607 mutex_lock(&local->sta_mtx); 608 609 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 610 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 611 612 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 613 goto do_survey; 614 615 i = 0; 616 ADD_STA_STATS(sta); 617 618 data[i++] = sta->sta_state; 619 620 sinfo.filled = 0; 621 sta_set_sinfo(sta, &sinfo); 622 623 if (sinfo.filled & STATION_INFO_TX_BITRATE) 624 data[i] = 100000 * 625 cfg80211_calculate_bitrate(&sinfo.txrate); 626 i++; 627 if (sinfo.filled & STATION_INFO_RX_BITRATE) 628 data[i] = 100000 * 629 cfg80211_calculate_bitrate(&sinfo.rxrate); 630 i++; 631 632 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 633 data[i] = (u8)sinfo.signal_avg; 634 i++; 635 } else { 636 list_for_each_entry(sta, &local->sta_list, list) { 637 /* Make sure this station belongs to the proper dev */ 638 if (sta->sdata->dev != dev) 639 continue; 640 641 i = 0; 642 ADD_STA_STATS(sta); 643 } 644 } 645 646 do_survey: 647 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 648 /* Get survey stats for current channel */ 649 survey.filled = 0; 650 651 rcu_read_lock(); 652 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 653 if (chanctx_conf) 654 channel = chanctx_conf->def.chan; 655 else 656 channel = NULL; 657 rcu_read_unlock(); 658 659 if (channel) { 660 q = 0; 661 do { 662 survey.filled = 0; 663 if (drv_get_survey(local, q, &survey) != 0) { 664 survey.filled = 0; 665 break; 666 } 667 q++; 668 } while (channel != survey.channel); 669 } 670 671 if (survey.filled) 672 data[i++] = survey.channel->center_freq; 673 else 674 data[i++] = 0; 675 if (survey.filled & SURVEY_INFO_NOISE_DBM) 676 data[i++] = (u8)survey.noise; 677 else 678 data[i++] = -1LL; 679 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 680 data[i++] = survey.channel_time; 681 else 682 data[i++] = -1LL; 683 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 684 data[i++] = survey.channel_time_busy; 685 else 686 data[i++] = -1LL; 687 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 688 data[i++] = survey.channel_time_ext_busy; 689 else 690 data[i++] = -1LL; 691 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 692 data[i++] = survey.channel_time_rx; 693 else 694 data[i++] = -1LL; 695 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 696 data[i++] = survey.channel_time_tx; 697 else 698 data[i++] = -1LL; 699 700 mutex_unlock(&local->sta_mtx); 701 702 if (WARN_ON(i != STA_STATS_LEN)) 703 return; 704 705 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 706 } 707 708 static void ieee80211_get_et_strings(struct wiphy *wiphy, 709 struct net_device *dev, 710 u32 sset, u8 *data) 711 { 712 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 713 int sz_sta_stats = 0; 714 715 if (sset == ETH_SS_STATS) { 716 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 717 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); 718 } 719 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 720 } 721 722 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 723 int idx, u8 *mac, struct station_info *sinfo) 724 { 725 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 726 struct ieee80211_local *local = sdata->local; 727 struct sta_info *sta; 728 int ret = -ENOENT; 729 730 mutex_lock(&local->sta_mtx); 731 732 sta = sta_info_get_by_idx(sdata, idx); 733 if (sta) { 734 ret = 0; 735 memcpy(mac, sta->sta.addr, ETH_ALEN); 736 sta_set_sinfo(sta, sinfo); 737 } 738 739 mutex_unlock(&local->sta_mtx); 740 741 return ret; 742 } 743 744 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 745 int idx, struct survey_info *survey) 746 { 747 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 748 749 return drv_get_survey(local, idx, survey); 750 } 751 752 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 753 u8 *mac, struct station_info *sinfo) 754 { 755 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 756 struct ieee80211_local *local = sdata->local; 757 struct sta_info *sta; 758 int ret = -ENOENT; 759 760 mutex_lock(&local->sta_mtx); 761 762 sta = sta_info_get_bss(sdata, mac); 763 if (sta) { 764 ret = 0; 765 sta_set_sinfo(sta, sinfo); 766 } 767 768 mutex_unlock(&local->sta_mtx); 769 770 return ret; 771 } 772 773 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 774 struct cfg80211_chan_def *chandef) 775 { 776 struct ieee80211_local *local = wiphy_priv(wiphy); 777 struct ieee80211_sub_if_data *sdata; 778 int ret = 0; 779 780 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 781 return 0; 782 783 mutex_lock(&local->iflist_mtx); 784 if (local->use_chanctx) { 785 sdata = rcu_dereference_protected( 786 local->monitor_sdata, 787 lockdep_is_held(&local->iflist_mtx)); 788 if (sdata) { 789 ieee80211_vif_release_channel(sdata); 790 ret = ieee80211_vif_use_channel(sdata, chandef, 791 IEEE80211_CHANCTX_EXCLUSIVE); 792 } 793 } else if (local->open_count == local->monitors) { 794 local->_oper_channel = chandef->chan; 795 local->_oper_channel_type = cfg80211_get_chandef_type(chandef); 796 ieee80211_hw_config(local, 0); 797 } 798 799 if (ret == 0) 800 local->monitor_chandef = *chandef; 801 mutex_unlock(&local->iflist_mtx); 802 803 return ret; 804 } 805 806 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 807 const u8 *resp, size_t resp_len) 808 { 809 struct probe_resp *new, *old; 810 811 if (!resp || !resp_len) 812 return 1; 813 814 old = rtnl_dereference(sdata->u.ap.probe_resp); 815 816 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 817 if (!new) 818 return -ENOMEM; 819 820 new->len = resp_len; 821 memcpy(new->data, resp, resp_len); 822 823 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 824 if (old) 825 kfree_rcu(old, rcu_head); 826 827 return 0; 828 } 829 830 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 831 struct cfg80211_beacon_data *params) 832 { 833 struct beacon_data *new, *old; 834 int new_head_len, new_tail_len; 835 int size, err; 836 u32 changed = BSS_CHANGED_BEACON; 837 838 old = rtnl_dereference(sdata->u.ap.beacon); 839 840 /* Need to have a beacon head if we don't have one yet */ 841 if (!params->head && !old) 842 return -EINVAL; 843 844 /* new or old head? */ 845 if (params->head) 846 new_head_len = params->head_len; 847 else 848 new_head_len = old->head_len; 849 850 /* new or old tail? */ 851 if (params->tail || !old) 852 /* params->tail_len will be zero for !params->tail */ 853 new_tail_len = params->tail_len; 854 else 855 new_tail_len = old->tail_len; 856 857 size = sizeof(*new) + new_head_len + new_tail_len; 858 859 new = kzalloc(size, GFP_KERNEL); 860 if (!new) 861 return -ENOMEM; 862 863 /* start filling the new info now */ 864 865 /* 866 * pointers go into the block we allocated, 867 * memory is | beacon_data | head | tail | 868 */ 869 new->head = ((u8 *) new) + sizeof(*new); 870 new->tail = new->head + new_head_len; 871 new->head_len = new_head_len; 872 new->tail_len = new_tail_len; 873 874 /* copy in head */ 875 if (params->head) 876 memcpy(new->head, params->head, new_head_len); 877 else 878 memcpy(new->head, old->head, new_head_len); 879 880 /* copy in optional tail */ 881 if (params->tail) 882 memcpy(new->tail, params->tail, new_tail_len); 883 else 884 if (old) 885 memcpy(new->tail, old->tail, new_tail_len); 886 887 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 888 params->probe_resp_len); 889 if (err < 0) 890 return err; 891 if (err == 0) 892 changed |= BSS_CHANGED_AP_PROBE_RESP; 893 894 rcu_assign_pointer(sdata->u.ap.beacon, new); 895 896 if (old) 897 kfree_rcu(old, rcu_head); 898 899 return changed; 900 } 901 902 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 903 struct cfg80211_ap_settings *params) 904 { 905 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 906 struct beacon_data *old; 907 struct ieee80211_sub_if_data *vlan; 908 u32 changed = BSS_CHANGED_BEACON_INT | 909 BSS_CHANGED_BEACON_ENABLED | 910 BSS_CHANGED_BEACON | 911 BSS_CHANGED_SSID | 912 BSS_CHANGED_P2P_PS; 913 int err; 914 915 old = rtnl_dereference(sdata->u.ap.beacon); 916 if (old) 917 return -EALREADY; 918 919 /* TODO: make hostapd tell us what it wants */ 920 sdata->smps_mode = IEEE80211_SMPS_OFF; 921 sdata->needed_rx_chains = sdata->local->rx_chains; 922 923 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 924 IEEE80211_CHANCTX_SHARED); 925 if (err) 926 return err; 927 928 /* 929 * Apply control port protocol, this allows us to 930 * not encrypt dynamic WEP control frames. 931 */ 932 sdata->control_port_protocol = params->crypto.control_port_ethertype; 933 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 934 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 935 vlan->control_port_protocol = 936 params->crypto.control_port_ethertype; 937 vlan->control_port_no_encrypt = 938 params->crypto.control_port_no_encrypt; 939 } 940 941 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 942 sdata->vif.bss_conf.dtim_period = params->dtim_period; 943 944 sdata->vif.bss_conf.ssid_len = params->ssid_len; 945 if (params->ssid_len) 946 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 947 params->ssid_len); 948 sdata->vif.bss_conf.hidden_ssid = 949 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 950 951 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 952 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 953 954 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 955 if (err < 0) 956 return err; 957 changed |= err; 958 959 err = drv_start_ap(sdata->local, sdata); 960 if (err) { 961 old = rtnl_dereference(sdata->u.ap.beacon); 962 if (old) 963 kfree_rcu(old, rcu_head); 964 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 965 return err; 966 } 967 968 ieee80211_bss_info_change_notify(sdata, changed); 969 970 netif_carrier_on(dev); 971 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 972 netif_carrier_on(vlan->dev); 973 974 return 0; 975 } 976 977 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 978 struct cfg80211_beacon_data *params) 979 { 980 struct ieee80211_sub_if_data *sdata; 981 struct beacon_data *old; 982 int err; 983 984 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 985 986 old = rtnl_dereference(sdata->u.ap.beacon); 987 if (!old) 988 return -ENOENT; 989 990 err = ieee80211_assign_beacon(sdata, params); 991 if (err < 0) 992 return err; 993 ieee80211_bss_info_change_notify(sdata, err); 994 return 0; 995 } 996 997 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 998 { 999 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1000 struct ieee80211_sub_if_data *vlan; 1001 struct ieee80211_local *local = sdata->local; 1002 struct beacon_data *old_beacon; 1003 struct probe_resp *old_probe_resp; 1004 1005 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1006 if (!old_beacon) 1007 return -ENOENT; 1008 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1009 1010 /* turn off carrier for this interface and dependent VLANs */ 1011 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1012 netif_carrier_off(vlan->dev); 1013 netif_carrier_off(dev); 1014 1015 /* remove beacon and probe response */ 1016 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1017 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1018 kfree_rcu(old_beacon, rcu_head); 1019 if (old_probe_resp) 1020 kfree_rcu(old_probe_resp, rcu_head); 1021 1022 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1023 sta_info_flush(local, vlan); 1024 sta_info_flush(local, sdata); 1025 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1026 1027 drv_stop_ap(sdata->local, sdata); 1028 1029 /* free all potentially still buffered bcast frames */ 1030 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1031 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1032 1033 ieee80211_vif_release_channel(sdata); 1034 1035 return 0; 1036 } 1037 1038 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1039 struct iapp_layer2_update { 1040 u8 da[ETH_ALEN]; /* broadcast */ 1041 u8 sa[ETH_ALEN]; /* STA addr */ 1042 __be16 len; /* 6 */ 1043 u8 dsap; /* 0 */ 1044 u8 ssap; /* 0 */ 1045 u8 control; 1046 u8 xid_info[3]; 1047 } __packed; 1048 1049 static void ieee80211_send_layer2_update(struct sta_info *sta) 1050 { 1051 struct iapp_layer2_update *msg; 1052 struct sk_buff *skb; 1053 1054 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1055 * bridge devices */ 1056 1057 skb = dev_alloc_skb(sizeof(*msg)); 1058 if (!skb) 1059 return; 1060 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1061 1062 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1063 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1064 1065 eth_broadcast_addr(msg->da); 1066 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1067 msg->len = htons(6); 1068 msg->dsap = 0; 1069 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1070 msg->control = 0xaf; /* XID response lsb.1111F101. 1071 * F=0 (no poll command; unsolicited frame) */ 1072 msg->xid_info[0] = 0x81; /* XID format identifier */ 1073 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1074 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1075 1076 skb->dev = sta->sdata->dev; 1077 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1078 memset(skb->cb, 0, sizeof(skb->cb)); 1079 netif_rx_ni(skb); 1080 } 1081 1082 static int sta_apply_parameters(struct ieee80211_local *local, 1083 struct sta_info *sta, 1084 struct station_parameters *params) 1085 { 1086 int ret = 0; 1087 u32 rates; 1088 int i, j; 1089 struct ieee80211_supported_band *sband; 1090 struct ieee80211_sub_if_data *sdata = sta->sdata; 1091 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1092 u32 mask, set; 1093 1094 sband = local->hw.wiphy->bands[band]; 1095 1096 mask = params->sta_flags_mask; 1097 set = params->sta_flags_set; 1098 1099 /* 1100 * In mesh mode, we can clear AUTHENTICATED flag but must 1101 * also make ASSOCIATED follow appropriately for the driver 1102 * API. See also below, after AUTHORIZED changes. 1103 */ 1104 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 1105 /* cfg80211 should not allow this in non-mesh modes */ 1106 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 1107 return -EINVAL; 1108 1109 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1110 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1111 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1112 if (ret) 1113 return ret; 1114 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1115 if (ret) 1116 return ret; 1117 } 1118 } 1119 1120 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1121 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1122 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1123 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1124 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1125 if (ret) 1126 return ret; 1127 } 1128 1129 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 1130 /* cfg80211 should not allow this in non-mesh modes */ 1131 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 1132 return -EINVAL; 1133 1134 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1135 test_sta_flag(sta, WLAN_STA_AUTH)) { 1136 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1137 if (ret) 1138 return ret; 1139 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1140 if (ret) 1141 return ret; 1142 } 1143 } 1144 1145 1146 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1147 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1148 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1149 else 1150 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1151 } 1152 1153 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1154 if (set & BIT(NL80211_STA_FLAG_WME)) { 1155 set_sta_flag(sta, WLAN_STA_WME); 1156 sta->sta.wme = true; 1157 } else { 1158 clear_sta_flag(sta, WLAN_STA_WME); 1159 sta->sta.wme = false; 1160 } 1161 } 1162 1163 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1164 if (set & BIT(NL80211_STA_FLAG_MFP)) 1165 set_sta_flag(sta, WLAN_STA_MFP); 1166 else 1167 clear_sta_flag(sta, WLAN_STA_MFP); 1168 } 1169 1170 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1171 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1172 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1173 else 1174 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1175 } 1176 1177 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1178 sta->sta.uapsd_queues = params->uapsd_queues; 1179 sta->sta.max_sp = params->max_sp; 1180 } 1181 1182 /* 1183 * cfg80211 validates this (1-2007) and allows setting the AID 1184 * only when creating a new station entry 1185 */ 1186 if (params->aid) 1187 sta->sta.aid = params->aid; 1188 1189 /* 1190 * FIXME: updating the following information is racy when this 1191 * function is called from ieee80211_change_station(). 1192 * However, all this information should be static so 1193 * maybe we should just reject attemps to change it. 1194 */ 1195 1196 if (params->listen_interval >= 0) 1197 sta->listen_interval = params->listen_interval; 1198 1199 if (params->supported_rates) { 1200 rates = 0; 1201 1202 for (i = 0; i < params->supported_rates_len; i++) { 1203 int rate = (params->supported_rates[i] & 0x7f) * 5; 1204 for (j = 0; j < sband->n_bitrates; j++) { 1205 if (sband->bitrates[j].bitrate == rate) 1206 rates |= BIT(j); 1207 } 1208 } 1209 sta->sta.supp_rates[band] = rates; 1210 } 1211 1212 if (params->ht_capa) 1213 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1214 params->ht_capa, 1215 &sta->sta.ht_cap); 1216 1217 if (params->vht_capa) 1218 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1219 params->vht_capa, 1220 &sta->sta.vht_cap); 1221 1222 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1223 #ifdef CONFIG_MAC80211_MESH 1224 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) 1225 switch (params->plink_state) { 1226 case NL80211_PLINK_LISTEN: 1227 case NL80211_PLINK_ESTAB: 1228 case NL80211_PLINK_BLOCKED: 1229 sta->plink_state = params->plink_state; 1230 break; 1231 default: 1232 /* nothing */ 1233 break; 1234 } 1235 else 1236 switch (params->plink_action) { 1237 case PLINK_ACTION_OPEN: 1238 mesh_plink_open(sta); 1239 break; 1240 case PLINK_ACTION_BLOCK: 1241 mesh_plink_block(sta); 1242 break; 1243 } 1244 #endif 1245 } 1246 1247 return 0; 1248 } 1249 1250 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1251 u8 *mac, struct station_parameters *params) 1252 { 1253 struct ieee80211_local *local = wiphy_priv(wiphy); 1254 struct sta_info *sta; 1255 struct ieee80211_sub_if_data *sdata; 1256 int err; 1257 int layer2_update; 1258 1259 if (params->vlan) { 1260 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1261 1262 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1263 sdata->vif.type != NL80211_IFTYPE_AP) 1264 return -EINVAL; 1265 } else 1266 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1267 1268 if (ether_addr_equal(mac, sdata->vif.addr)) 1269 return -EINVAL; 1270 1271 if (is_multicast_ether_addr(mac)) 1272 return -EINVAL; 1273 1274 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1275 if (!sta) 1276 return -ENOMEM; 1277 1278 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1279 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1280 1281 err = sta_apply_parameters(local, sta, params); 1282 if (err) { 1283 sta_info_free(local, sta); 1284 return err; 1285 } 1286 1287 /* 1288 * for TDLS, rate control should be initialized only when supported 1289 * rates are known. 1290 */ 1291 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1292 rate_control_rate_init(sta); 1293 1294 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1295 sdata->vif.type == NL80211_IFTYPE_AP; 1296 1297 err = sta_info_insert_rcu(sta); 1298 if (err) { 1299 rcu_read_unlock(); 1300 return err; 1301 } 1302 1303 if (layer2_update) 1304 ieee80211_send_layer2_update(sta); 1305 1306 rcu_read_unlock(); 1307 1308 return 0; 1309 } 1310 1311 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1312 u8 *mac) 1313 { 1314 struct ieee80211_local *local = wiphy_priv(wiphy); 1315 struct ieee80211_sub_if_data *sdata; 1316 1317 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1318 1319 if (mac) 1320 return sta_info_destroy_addr_bss(sdata, mac); 1321 1322 sta_info_flush(local, sdata); 1323 return 0; 1324 } 1325 1326 static int ieee80211_change_station(struct wiphy *wiphy, 1327 struct net_device *dev, 1328 u8 *mac, 1329 struct station_parameters *params) 1330 { 1331 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1332 struct ieee80211_local *local = wiphy_priv(wiphy); 1333 struct sta_info *sta; 1334 struct ieee80211_sub_if_data *vlansdata; 1335 int err; 1336 1337 mutex_lock(&local->sta_mtx); 1338 1339 sta = sta_info_get_bss(sdata, mac); 1340 if (!sta) { 1341 mutex_unlock(&local->sta_mtx); 1342 return -ENOENT; 1343 } 1344 1345 /* in station mode, supported rates are only valid with TDLS */ 1346 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1347 params->supported_rates && 1348 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1349 mutex_unlock(&local->sta_mtx); 1350 return -EINVAL; 1351 } 1352 1353 if (params->vlan && params->vlan != sta->sdata->dev) { 1354 bool prev_4addr = false; 1355 bool new_4addr = false; 1356 1357 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1358 1359 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1360 vlansdata->vif.type != NL80211_IFTYPE_AP) { 1361 mutex_unlock(&local->sta_mtx); 1362 return -EINVAL; 1363 } 1364 1365 if (params->vlan->ieee80211_ptr->use_4addr) { 1366 if (vlansdata->u.vlan.sta) { 1367 mutex_unlock(&local->sta_mtx); 1368 return -EBUSY; 1369 } 1370 1371 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1372 new_4addr = true; 1373 } 1374 1375 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1376 sta->sdata->u.vlan.sta) { 1377 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1378 prev_4addr = true; 1379 } 1380 1381 sta->sdata = vlansdata; 1382 1383 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1384 prev_4addr != new_4addr) { 1385 if (new_4addr) 1386 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1387 else 1388 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1389 } 1390 1391 ieee80211_send_layer2_update(sta); 1392 } 1393 1394 err = sta_apply_parameters(local, sta, params); 1395 if (err) { 1396 mutex_unlock(&local->sta_mtx); 1397 return err; 1398 } 1399 1400 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) 1401 rate_control_rate_init(sta); 1402 1403 mutex_unlock(&local->sta_mtx); 1404 1405 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1406 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1407 ieee80211_recalc_ps(local, -1); 1408 ieee80211_recalc_ps_vif(sdata); 1409 } 1410 return 0; 1411 } 1412 1413 #ifdef CONFIG_MAC80211_MESH 1414 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1415 u8 *dst, u8 *next_hop) 1416 { 1417 struct ieee80211_sub_if_data *sdata; 1418 struct mesh_path *mpath; 1419 struct sta_info *sta; 1420 int err; 1421 1422 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1423 1424 rcu_read_lock(); 1425 sta = sta_info_get(sdata, next_hop); 1426 if (!sta) { 1427 rcu_read_unlock(); 1428 return -ENOENT; 1429 } 1430 1431 err = mesh_path_add(dst, sdata); 1432 if (err) { 1433 rcu_read_unlock(); 1434 return err; 1435 } 1436 1437 mpath = mesh_path_lookup(dst, sdata); 1438 if (!mpath) { 1439 rcu_read_unlock(); 1440 return -ENXIO; 1441 } 1442 mesh_path_fix_nexthop(mpath, sta); 1443 1444 rcu_read_unlock(); 1445 return 0; 1446 } 1447 1448 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1449 u8 *dst) 1450 { 1451 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1452 1453 if (dst) 1454 return mesh_path_del(dst, sdata); 1455 1456 mesh_path_flush_by_iface(sdata); 1457 return 0; 1458 } 1459 1460 static int ieee80211_change_mpath(struct wiphy *wiphy, 1461 struct net_device *dev, 1462 u8 *dst, u8 *next_hop) 1463 { 1464 struct ieee80211_sub_if_data *sdata; 1465 struct mesh_path *mpath; 1466 struct sta_info *sta; 1467 1468 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1469 1470 rcu_read_lock(); 1471 1472 sta = sta_info_get(sdata, next_hop); 1473 if (!sta) { 1474 rcu_read_unlock(); 1475 return -ENOENT; 1476 } 1477 1478 mpath = mesh_path_lookup(dst, sdata); 1479 if (!mpath) { 1480 rcu_read_unlock(); 1481 return -ENOENT; 1482 } 1483 1484 mesh_path_fix_nexthop(mpath, sta); 1485 1486 rcu_read_unlock(); 1487 return 0; 1488 } 1489 1490 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1491 struct mpath_info *pinfo) 1492 { 1493 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1494 1495 if (next_hop_sta) 1496 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1497 else 1498 memset(next_hop, 0, ETH_ALEN); 1499 1500 memset(pinfo, 0, sizeof(*pinfo)); 1501 1502 pinfo->generation = mesh_paths_generation; 1503 1504 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1505 MPATH_INFO_SN | 1506 MPATH_INFO_METRIC | 1507 MPATH_INFO_EXPTIME | 1508 MPATH_INFO_DISCOVERY_TIMEOUT | 1509 MPATH_INFO_DISCOVERY_RETRIES | 1510 MPATH_INFO_FLAGS; 1511 1512 pinfo->frame_qlen = mpath->frame_queue.qlen; 1513 pinfo->sn = mpath->sn; 1514 pinfo->metric = mpath->metric; 1515 if (time_before(jiffies, mpath->exp_time)) 1516 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1517 pinfo->discovery_timeout = 1518 jiffies_to_msecs(mpath->discovery_timeout); 1519 pinfo->discovery_retries = mpath->discovery_retries; 1520 if (mpath->flags & MESH_PATH_ACTIVE) 1521 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1522 if (mpath->flags & MESH_PATH_RESOLVING) 1523 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1524 if (mpath->flags & MESH_PATH_SN_VALID) 1525 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1526 if (mpath->flags & MESH_PATH_FIXED) 1527 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1528 if (mpath->flags & MESH_PATH_RESOLVED) 1529 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1530 } 1531 1532 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1533 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1534 1535 { 1536 struct ieee80211_sub_if_data *sdata; 1537 struct mesh_path *mpath; 1538 1539 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1540 1541 rcu_read_lock(); 1542 mpath = mesh_path_lookup(dst, sdata); 1543 if (!mpath) { 1544 rcu_read_unlock(); 1545 return -ENOENT; 1546 } 1547 memcpy(dst, mpath->dst, ETH_ALEN); 1548 mpath_set_pinfo(mpath, next_hop, pinfo); 1549 rcu_read_unlock(); 1550 return 0; 1551 } 1552 1553 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1554 int idx, u8 *dst, u8 *next_hop, 1555 struct mpath_info *pinfo) 1556 { 1557 struct ieee80211_sub_if_data *sdata; 1558 struct mesh_path *mpath; 1559 1560 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1561 1562 rcu_read_lock(); 1563 mpath = mesh_path_lookup_by_idx(idx, sdata); 1564 if (!mpath) { 1565 rcu_read_unlock(); 1566 return -ENOENT; 1567 } 1568 memcpy(dst, mpath->dst, ETH_ALEN); 1569 mpath_set_pinfo(mpath, next_hop, pinfo); 1570 rcu_read_unlock(); 1571 return 0; 1572 } 1573 1574 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1575 struct net_device *dev, 1576 struct mesh_config *conf) 1577 { 1578 struct ieee80211_sub_if_data *sdata; 1579 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1580 1581 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1582 return 0; 1583 } 1584 1585 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1586 { 1587 return (mask >> (parm-1)) & 0x1; 1588 } 1589 1590 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1591 const struct mesh_setup *setup) 1592 { 1593 u8 *new_ie; 1594 const u8 *old_ie; 1595 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1596 struct ieee80211_sub_if_data, u.mesh); 1597 1598 /* allocate information elements */ 1599 new_ie = NULL; 1600 old_ie = ifmsh->ie; 1601 1602 if (setup->ie_len) { 1603 new_ie = kmemdup(setup->ie, setup->ie_len, 1604 GFP_KERNEL); 1605 if (!new_ie) 1606 return -ENOMEM; 1607 } 1608 ifmsh->ie_len = setup->ie_len; 1609 ifmsh->ie = new_ie; 1610 kfree(old_ie); 1611 1612 /* now copy the rest of the setup parameters */ 1613 ifmsh->mesh_id_len = setup->mesh_id_len; 1614 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1615 ifmsh->mesh_sp_id = setup->sync_method; 1616 ifmsh->mesh_pp_id = setup->path_sel_proto; 1617 ifmsh->mesh_pm_id = setup->path_metric; 1618 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1619 if (setup->is_authenticated) 1620 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1621 if (setup->is_secure) 1622 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1623 1624 /* mcast rate setting in Mesh Node */ 1625 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1626 sizeof(setup->mcast_rate)); 1627 1628 return 0; 1629 } 1630 1631 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1632 struct net_device *dev, u32 mask, 1633 const struct mesh_config *nconf) 1634 { 1635 struct mesh_config *conf; 1636 struct ieee80211_sub_if_data *sdata; 1637 struct ieee80211_if_mesh *ifmsh; 1638 1639 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1640 ifmsh = &sdata->u.mesh; 1641 1642 /* Set the config options which we are interested in setting */ 1643 conf = &(sdata->u.mesh.mshcfg); 1644 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1645 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1646 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1647 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1648 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1649 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1650 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1651 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1652 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1653 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1654 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1655 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1656 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1657 conf->element_ttl = nconf->element_ttl; 1658 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1659 conf->auto_open_plinks = nconf->auto_open_plinks; 1660 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1661 conf->dot11MeshNbrOffsetMaxNeighbor = 1662 nconf->dot11MeshNbrOffsetMaxNeighbor; 1663 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1664 conf->dot11MeshHWMPmaxPREQretries = 1665 nconf->dot11MeshHWMPmaxPREQretries; 1666 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1667 conf->path_refresh_time = nconf->path_refresh_time; 1668 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1669 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1670 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1671 conf->dot11MeshHWMPactivePathTimeout = 1672 nconf->dot11MeshHWMPactivePathTimeout; 1673 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1674 conf->dot11MeshHWMPpreqMinInterval = 1675 nconf->dot11MeshHWMPpreqMinInterval; 1676 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1677 conf->dot11MeshHWMPperrMinInterval = 1678 nconf->dot11MeshHWMPperrMinInterval; 1679 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1680 mask)) 1681 conf->dot11MeshHWMPnetDiameterTraversalTime = 1682 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1683 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1684 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1685 ieee80211_mesh_root_setup(ifmsh); 1686 } 1687 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1688 /* our current gate announcement implementation rides on root 1689 * announcements, so require this ifmsh to also be a root node 1690 * */ 1691 if (nconf->dot11MeshGateAnnouncementProtocol && 1692 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1693 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1694 ieee80211_mesh_root_setup(ifmsh); 1695 } 1696 conf->dot11MeshGateAnnouncementProtocol = 1697 nconf->dot11MeshGateAnnouncementProtocol; 1698 } 1699 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1700 conf->dot11MeshHWMPRannInterval = 1701 nconf->dot11MeshHWMPRannInterval; 1702 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1703 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1704 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1705 /* our RSSI threshold implementation is supported only for 1706 * devices that report signal in dBm. 1707 */ 1708 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1709 return -ENOTSUPP; 1710 conf->rssi_threshold = nconf->rssi_threshold; 1711 } 1712 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1713 conf->ht_opmode = nconf->ht_opmode; 1714 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1715 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1716 } 1717 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1718 conf->dot11MeshHWMPactivePathToRootTimeout = 1719 nconf->dot11MeshHWMPactivePathToRootTimeout; 1720 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1721 conf->dot11MeshHWMProotInterval = 1722 nconf->dot11MeshHWMProotInterval; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1724 conf->dot11MeshHWMPconfirmationInterval = 1725 nconf->dot11MeshHWMPconfirmationInterval; 1726 return 0; 1727 } 1728 1729 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1730 const struct mesh_config *conf, 1731 const struct mesh_setup *setup) 1732 { 1733 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1734 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1735 int err; 1736 1737 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1738 err = copy_mesh_setup(ifmsh, setup); 1739 if (err) 1740 return err; 1741 1742 /* can mesh use other SMPS modes? */ 1743 sdata->smps_mode = IEEE80211_SMPS_OFF; 1744 sdata->needed_rx_chains = sdata->local->rx_chains; 1745 1746 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1747 IEEE80211_CHANCTX_SHARED); 1748 if (err) 1749 return err; 1750 1751 ieee80211_start_mesh(sdata); 1752 1753 return 0; 1754 } 1755 1756 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1757 { 1758 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1759 1760 ieee80211_stop_mesh(sdata); 1761 ieee80211_vif_release_channel(sdata); 1762 1763 return 0; 1764 } 1765 #endif 1766 1767 static int ieee80211_change_bss(struct wiphy *wiphy, 1768 struct net_device *dev, 1769 struct bss_parameters *params) 1770 { 1771 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1772 enum ieee80211_band band; 1773 u32 changed = 0; 1774 1775 if (!rtnl_dereference(sdata->u.ap.beacon)) 1776 return -ENOENT; 1777 1778 band = ieee80211_get_sdata_band(sdata); 1779 1780 if (params->use_cts_prot >= 0) { 1781 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1782 changed |= BSS_CHANGED_ERP_CTS_PROT; 1783 } 1784 if (params->use_short_preamble >= 0) { 1785 sdata->vif.bss_conf.use_short_preamble = 1786 params->use_short_preamble; 1787 changed |= BSS_CHANGED_ERP_PREAMBLE; 1788 } 1789 1790 if (!sdata->vif.bss_conf.use_short_slot && 1791 band == IEEE80211_BAND_5GHZ) { 1792 sdata->vif.bss_conf.use_short_slot = true; 1793 changed |= BSS_CHANGED_ERP_SLOT; 1794 } 1795 1796 if (params->use_short_slot_time >= 0) { 1797 sdata->vif.bss_conf.use_short_slot = 1798 params->use_short_slot_time; 1799 changed |= BSS_CHANGED_ERP_SLOT; 1800 } 1801 1802 if (params->basic_rates) { 1803 int i, j; 1804 u32 rates = 0; 1805 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1806 1807 for (i = 0; i < params->basic_rates_len; i++) { 1808 int rate = (params->basic_rates[i] & 0x7f) * 5; 1809 for (j = 0; j < sband->n_bitrates; j++) { 1810 if (sband->bitrates[j].bitrate == rate) 1811 rates |= BIT(j); 1812 } 1813 } 1814 sdata->vif.bss_conf.basic_rates = rates; 1815 changed |= BSS_CHANGED_BASIC_RATES; 1816 } 1817 1818 if (params->ap_isolate >= 0) { 1819 if (params->ap_isolate) 1820 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1821 else 1822 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1823 } 1824 1825 if (params->ht_opmode >= 0) { 1826 sdata->vif.bss_conf.ht_operation_mode = 1827 (u16) params->ht_opmode; 1828 changed |= BSS_CHANGED_HT; 1829 } 1830 1831 if (params->p2p_ctwindow >= 0) { 1832 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 1833 changed |= BSS_CHANGED_P2P_PS; 1834 } 1835 1836 if (params->p2p_opp_ps >= 0) { 1837 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 1838 changed |= BSS_CHANGED_P2P_PS; 1839 } 1840 1841 ieee80211_bss_info_change_notify(sdata, changed); 1842 1843 return 0; 1844 } 1845 1846 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1847 struct net_device *dev, 1848 struct ieee80211_txq_params *params) 1849 { 1850 struct ieee80211_local *local = wiphy_priv(wiphy); 1851 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1852 struct ieee80211_tx_queue_params p; 1853 1854 if (!local->ops->conf_tx) 1855 return -EOPNOTSUPP; 1856 1857 if (local->hw.queues < IEEE80211_NUM_ACS) 1858 return -EOPNOTSUPP; 1859 1860 memset(&p, 0, sizeof(p)); 1861 p.aifs = params->aifs; 1862 p.cw_max = params->cwmax; 1863 p.cw_min = params->cwmin; 1864 p.txop = params->txop; 1865 1866 /* 1867 * Setting tx queue params disables u-apsd because it's only 1868 * called in master mode. 1869 */ 1870 p.uapsd = false; 1871 1872 sdata->tx_conf[params->ac] = p; 1873 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1874 wiphy_debug(local->hw.wiphy, 1875 "failed to set TX queue parameters for AC %d\n", 1876 params->ac); 1877 return -EINVAL; 1878 } 1879 1880 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1881 1882 return 0; 1883 } 1884 1885 #ifdef CONFIG_PM 1886 static int ieee80211_suspend(struct wiphy *wiphy, 1887 struct cfg80211_wowlan *wowlan) 1888 { 1889 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1890 } 1891 1892 static int ieee80211_resume(struct wiphy *wiphy) 1893 { 1894 return __ieee80211_resume(wiphy_priv(wiphy)); 1895 } 1896 #else 1897 #define ieee80211_suspend NULL 1898 #define ieee80211_resume NULL 1899 #endif 1900 1901 static int ieee80211_scan(struct wiphy *wiphy, 1902 struct cfg80211_scan_request *req) 1903 { 1904 struct ieee80211_sub_if_data *sdata; 1905 1906 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1907 1908 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1909 case NL80211_IFTYPE_STATION: 1910 case NL80211_IFTYPE_ADHOC: 1911 case NL80211_IFTYPE_MESH_POINT: 1912 case NL80211_IFTYPE_P2P_CLIENT: 1913 case NL80211_IFTYPE_P2P_DEVICE: 1914 break; 1915 case NL80211_IFTYPE_P2P_GO: 1916 if (sdata->local->ops->hw_scan) 1917 break; 1918 /* 1919 * FIXME: implement NoA while scanning in software, 1920 * for now fall through to allow scanning only when 1921 * beaconing hasn't been configured yet 1922 */ 1923 case NL80211_IFTYPE_AP: 1924 /* 1925 * If the scan has been forced (and the driver supports 1926 * forcing), don't care about being beaconing already. 1927 * This will create problems to the attached stations (e.g. all 1928 * the frames sent while scanning on other channel will be 1929 * lost) 1930 */ 1931 if (sdata->u.ap.beacon && 1932 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 1933 !(req->flags & NL80211_SCAN_FLAG_AP))) 1934 return -EOPNOTSUPP; 1935 break; 1936 default: 1937 return -EOPNOTSUPP; 1938 } 1939 1940 return ieee80211_request_scan(sdata, req); 1941 } 1942 1943 static int 1944 ieee80211_sched_scan_start(struct wiphy *wiphy, 1945 struct net_device *dev, 1946 struct cfg80211_sched_scan_request *req) 1947 { 1948 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1949 1950 if (!sdata->local->ops->sched_scan_start) 1951 return -EOPNOTSUPP; 1952 1953 return ieee80211_request_sched_scan_start(sdata, req); 1954 } 1955 1956 static int 1957 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 1958 { 1959 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1960 1961 if (!sdata->local->ops->sched_scan_stop) 1962 return -EOPNOTSUPP; 1963 1964 return ieee80211_request_sched_scan_stop(sdata); 1965 } 1966 1967 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1968 struct cfg80211_auth_request *req) 1969 { 1970 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1971 } 1972 1973 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1974 struct cfg80211_assoc_request *req) 1975 { 1976 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1977 } 1978 1979 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1980 struct cfg80211_deauth_request *req) 1981 { 1982 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1983 } 1984 1985 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1986 struct cfg80211_disassoc_request *req) 1987 { 1988 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1989 } 1990 1991 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1992 struct cfg80211_ibss_params *params) 1993 { 1994 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 1995 } 1996 1997 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1998 { 1999 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2000 } 2001 2002 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2003 int rate[IEEE80211_NUM_BANDS]) 2004 { 2005 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2006 2007 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2008 sizeof(int) * IEEE80211_NUM_BANDS); 2009 2010 return 0; 2011 } 2012 2013 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2014 { 2015 struct ieee80211_local *local = wiphy_priv(wiphy); 2016 int err; 2017 2018 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2019 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2020 2021 if (err) 2022 return err; 2023 } 2024 2025 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2026 err = drv_set_coverage_class(local, wiphy->coverage_class); 2027 2028 if (err) 2029 return err; 2030 } 2031 2032 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2033 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2034 2035 if (err) 2036 return err; 2037 } 2038 2039 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2040 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2041 return -EINVAL; 2042 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2043 } 2044 if (changed & WIPHY_PARAM_RETRY_LONG) { 2045 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2046 return -EINVAL; 2047 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2048 } 2049 if (changed & 2050 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2051 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2052 2053 return 0; 2054 } 2055 2056 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2057 struct wireless_dev *wdev, 2058 enum nl80211_tx_power_setting type, int mbm) 2059 { 2060 struct ieee80211_local *local = wiphy_priv(wiphy); 2061 struct ieee80211_sub_if_data *sdata; 2062 2063 if (wdev) { 2064 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2065 2066 switch (type) { 2067 case NL80211_TX_POWER_AUTOMATIC: 2068 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2069 break; 2070 case NL80211_TX_POWER_LIMITED: 2071 case NL80211_TX_POWER_FIXED: 2072 if (mbm < 0 || (mbm % 100)) 2073 return -EOPNOTSUPP; 2074 sdata->user_power_level = MBM_TO_DBM(mbm); 2075 break; 2076 } 2077 2078 ieee80211_recalc_txpower(sdata); 2079 2080 return 0; 2081 } 2082 2083 switch (type) { 2084 case NL80211_TX_POWER_AUTOMATIC: 2085 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2086 break; 2087 case NL80211_TX_POWER_LIMITED: 2088 case NL80211_TX_POWER_FIXED: 2089 if (mbm < 0 || (mbm % 100)) 2090 return -EOPNOTSUPP; 2091 local->user_power_level = MBM_TO_DBM(mbm); 2092 break; 2093 } 2094 2095 mutex_lock(&local->iflist_mtx); 2096 list_for_each_entry(sdata, &local->interfaces, list) 2097 sdata->user_power_level = local->user_power_level; 2098 list_for_each_entry(sdata, &local->interfaces, list) 2099 ieee80211_recalc_txpower(sdata); 2100 mutex_unlock(&local->iflist_mtx); 2101 2102 return 0; 2103 } 2104 2105 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2106 struct wireless_dev *wdev, 2107 int *dbm) 2108 { 2109 struct ieee80211_local *local = wiphy_priv(wiphy); 2110 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2111 2112 if (!local->use_chanctx) 2113 *dbm = local->hw.conf.power_level; 2114 else 2115 *dbm = sdata->vif.bss_conf.txpower; 2116 2117 return 0; 2118 } 2119 2120 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2121 const u8 *addr) 2122 { 2123 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2124 2125 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2126 2127 return 0; 2128 } 2129 2130 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2131 { 2132 struct ieee80211_local *local = wiphy_priv(wiphy); 2133 2134 drv_rfkill_poll(local); 2135 } 2136 2137 #ifdef CONFIG_NL80211_TESTMODE 2138 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2139 { 2140 struct ieee80211_local *local = wiphy_priv(wiphy); 2141 2142 if (!local->ops->testmode_cmd) 2143 return -EOPNOTSUPP; 2144 2145 return local->ops->testmode_cmd(&local->hw, data, len); 2146 } 2147 2148 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2149 struct sk_buff *skb, 2150 struct netlink_callback *cb, 2151 void *data, int len) 2152 { 2153 struct ieee80211_local *local = wiphy_priv(wiphy); 2154 2155 if (!local->ops->testmode_dump) 2156 return -EOPNOTSUPP; 2157 2158 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2159 } 2160 #endif 2161 2162 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2163 enum ieee80211_smps_mode smps_mode) 2164 { 2165 const u8 *ap; 2166 enum ieee80211_smps_mode old_req; 2167 int err; 2168 2169 lockdep_assert_held(&sdata->u.mgd.mtx); 2170 2171 old_req = sdata->u.mgd.req_smps; 2172 sdata->u.mgd.req_smps = smps_mode; 2173 2174 if (old_req == smps_mode && 2175 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2176 return 0; 2177 2178 /* 2179 * If not associated, or current association is not an HT 2180 * association, there's no need to do anything, just store 2181 * the new value until we associate. 2182 */ 2183 if (!sdata->u.mgd.associated || 2184 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2185 return 0; 2186 2187 ap = sdata->u.mgd.associated->bssid; 2188 2189 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2190 if (sdata->u.mgd.powersave) 2191 smps_mode = IEEE80211_SMPS_DYNAMIC; 2192 else 2193 smps_mode = IEEE80211_SMPS_OFF; 2194 } 2195 2196 /* send SM PS frame to AP */ 2197 err = ieee80211_send_smps_action(sdata, smps_mode, 2198 ap, ap); 2199 if (err) 2200 sdata->u.mgd.req_smps = old_req; 2201 2202 return err; 2203 } 2204 2205 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2206 bool enabled, int timeout) 2207 { 2208 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2209 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2210 2211 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2212 return -EOPNOTSUPP; 2213 2214 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2215 return -EOPNOTSUPP; 2216 2217 if (enabled == sdata->u.mgd.powersave && 2218 timeout == local->dynamic_ps_forced_timeout) 2219 return 0; 2220 2221 sdata->u.mgd.powersave = enabled; 2222 local->dynamic_ps_forced_timeout = timeout; 2223 2224 /* no change, but if automatic follow powersave */ 2225 mutex_lock(&sdata->u.mgd.mtx); 2226 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2227 mutex_unlock(&sdata->u.mgd.mtx); 2228 2229 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2230 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2231 2232 ieee80211_recalc_ps(local, -1); 2233 ieee80211_recalc_ps_vif(sdata); 2234 2235 return 0; 2236 } 2237 2238 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2239 struct net_device *dev, 2240 s32 rssi_thold, u32 rssi_hyst) 2241 { 2242 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2243 struct ieee80211_vif *vif = &sdata->vif; 2244 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2245 2246 if (rssi_thold == bss_conf->cqm_rssi_thold && 2247 rssi_hyst == bss_conf->cqm_rssi_hyst) 2248 return 0; 2249 2250 bss_conf->cqm_rssi_thold = rssi_thold; 2251 bss_conf->cqm_rssi_hyst = rssi_hyst; 2252 2253 /* tell the driver upon association, unless already associated */ 2254 if (sdata->u.mgd.associated && 2255 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2256 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2257 2258 return 0; 2259 } 2260 2261 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2262 struct net_device *dev, 2263 const u8 *addr, 2264 const struct cfg80211_bitrate_mask *mask) 2265 { 2266 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2267 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2268 int i, ret; 2269 2270 if (!ieee80211_sdata_running(sdata)) 2271 return -ENETDOWN; 2272 2273 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2274 ret = drv_set_bitrate_mask(local, sdata, mask); 2275 if (ret) 2276 return ret; 2277 } 2278 2279 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2280 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2281 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2282 sizeof(mask->control[i].mcs)); 2283 } 2284 2285 return 0; 2286 } 2287 2288 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2289 struct ieee80211_sub_if_data *sdata, 2290 struct ieee80211_channel *channel, 2291 unsigned int duration, u64 *cookie, 2292 struct sk_buff *txskb) 2293 { 2294 struct ieee80211_roc_work *roc, *tmp; 2295 bool queued = false; 2296 int ret; 2297 2298 lockdep_assert_held(&local->mtx); 2299 2300 if (local->use_chanctx && !local->ops->remain_on_channel) 2301 return -EOPNOTSUPP; 2302 2303 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2304 if (!roc) 2305 return -ENOMEM; 2306 2307 roc->chan = channel; 2308 roc->duration = duration; 2309 roc->req_duration = duration; 2310 roc->frame = txskb; 2311 roc->mgmt_tx_cookie = (unsigned long)txskb; 2312 roc->sdata = sdata; 2313 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2314 INIT_LIST_HEAD(&roc->dependents); 2315 2316 /* if there's one pending or we're scanning, queue this one */ 2317 if (!list_empty(&local->roc_list) || local->scanning) 2318 goto out_check_combine; 2319 2320 /* if not HW assist, just queue & schedule work */ 2321 if (!local->ops->remain_on_channel) { 2322 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2323 goto out_queue; 2324 } 2325 2326 /* otherwise actually kick it off here (for error handling) */ 2327 2328 /* 2329 * If the duration is zero, then the driver 2330 * wouldn't actually do anything. Set it to 2331 * 10 for now. 2332 * 2333 * TODO: cancel the off-channel operation 2334 * when we get the SKB's TX status and 2335 * the wait time was zero before. 2336 */ 2337 if (!duration) 2338 duration = 10; 2339 2340 ret = drv_remain_on_channel(local, sdata, channel, duration); 2341 if (ret) { 2342 kfree(roc); 2343 return ret; 2344 } 2345 2346 roc->started = true; 2347 goto out_queue; 2348 2349 out_check_combine: 2350 list_for_each_entry(tmp, &local->roc_list, list) { 2351 if (tmp->chan != channel || tmp->sdata != sdata) 2352 continue; 2353 2354 /* 2355 * Extend this ROC if possible: 2356 * 2357 * If it hasn't started yet, just increase the duration 2358 * and add the new one to the list of dependents. 2359 */ 2360 if (!tmp->started) { 2361 list_add_tail(&roc->list, &tmp->dependents); 2362 tmp->duration = max(tmp->duration, roc->duration); 2363 queued = true; 2364 break; 2365 } 2366 2367 /* If it has already started, it's more difficult ... */ 2368 if (local->ops->remain_on_channel) { 2369 unsigned long j = jiffies; 2370 2371 /* 2372 * In the offloaded ROC case, if it hasn't begun, add 2373 * this new one to the dependent list to be handled 2374 * when the the master one begins. If it has begun, 2375 * check that there's still a minimum time left and 2376 * if so, start this one, transmitting the frame, but 2377 * add it to the list directly after this one with a 2378 * a reduced time so we'll ask the driver to execute 2379 * it right after finishing the previous one, in the 2380 * hope that it'll also be executed right afterwards, 2381 * effectively extending the old one. 2382 * If there's no minimum time left, just add it to the 2383 * normal list. 2384 */ 2385 if (!tmp->hw_begun) { 2386 list_add_tail(&roc->list, &tmp->dependents); 2387 queued = true; 2388 break; 2389 } 2390 2391 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2392 tmp->hw_start_time + 2393 msecs_to_jiffies(tmp->duration))) { 2394 int new_dur; 2395 2396 ieee80211_handle_roc_started(roc); 2397 2398 new_dur = roc->duration - 2399 jiffies_to_msecs(tmp->hw_start_time + 2400 msecs_to_jiffies( 2401 tmp->duration) - 2402 j); 2403 2404 if (new_dur > 0) { 2405 /* add right after tmp */ 2406 list_add(&roc->list, &tmp->list); 2407 } else { 2408 list_add_tail(&roc->list, 2409 &tmp->dependents); 2410 } 2411 queued = true; 2412 } 2413 } else if (del_timer_sync(&tmp->work.timer)) { 2414 unsigned long new_end; 2415 2416 /* 2417 * In the software ROC case, cancel the timer, if 2418 * that fails then the finish work is already 2419 * queued/pending and thus we queue the new ROC 2420 * normally, if that succeeds then we can extend 2421 * the timer duration and TX the frame (if any.) 2422 */ 2423 2424 list_add_tail(&roc->list, &tmp->dependents); 2425 queued = true; 2426 2427 new_end = jiffies + msecs_to_jiffies(roc->duration); 2428 2429 /* ok, it was started & we canceled timer */ 2430 if (time_after(new_end, tmp->work.timer.expires)) 2431 mod_timer(&tmp->work.timer, new_end); 2432 else 2433 add_timer(&tmp->work.timer); 2434 2435 ieee80211_handle_roc_started(roc); 2436 } 2437 break; 2438 } 2439 2440 out_queue: 2441 if (!queued) 2442 list_add_tail(&roc->list, &local->roc_list); 2443 2444 /* 2445 * cookie is either the roc cookie (for normal roc) 2446 * or the SKB (for mgmt TX) 2447 */ 2448 if (!txskb) { 2449 /* local->mtx protects this */ 2450 local->roc_cookie_counter++; 2451 roc->cookie = local->roc_cookie_counter; 2452 /* wow, you wrapped 64 bits ... more likely a bug */ 2453 if (WARN_ON(roc->cookie == 0)) { 2454 roc->cookie = 1; 2455 local->roc_cookie_counter++; 2456 } 2457 *cookie = roc->cookie; 2458 } else { 2459 *cookie = (unsigned long)txskb; 2460 } 2461 2462 return 0; 2463 } 2464 2465 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2466 struct wireless_dev *wdev, 2467 struct ieee80211_channel *chan, 2468 unsigned int duration, 2469 u64 *cookie) 2470 { 2471 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2472 struct ieee80211_local *local = sdata->local; 2473 int ret; 2474 2475 mutex_lock(&local->mtx); 2476 ret = ieee80211_start_roc_work(local, sdata, chan, 2477 duration, cookie, NULL); 2478 mutex_unlock(&local->mtx); 2479 2480 return ret; 2481 } 2482 2483 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2484 u64 cookie, bool mgmt_tx) 2485 { 2486 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2487 int ret; 2488 2489 mutex_lock(&local->mtx); 2490 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2491 struct ieee80211_roc_work *dep, *tmp2; 2492 2493 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2494 if (!mgmt_tx && dep->cookie != cookie) 2495 continue; 2496 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2497 continue; 2498 /* found dependent item -- just remove it */ 2499 list_del(&dep->list); 2500 mutex_unlock(&local->mtx); 2501 2502 ieee80211_roc_notify_destroy(dep); 2503 return 0; 2504 } 2505 2506 if (!mgmt_tx && roc->cookie != cookie) 2507 continue; 2508 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2509 continue; 2510 2511 found = roc; 2512 break; 2513 } 2514 2515 if (!found) { 2516 mutex_unlock(&local->mtx); 2517 return -ENOENT; 2518 } 2519 2520 /* 2521 * We found the item to cancel, so do that. Note that it 2522 * may have dependents, which we also cancel (and send 2523 * the expired signal for.) Not doing so would be quite 2524 * tricky here, but we may need to fix it later. 2525 */ 2526 2527 if (local->ops->remain_on_channel) { 2528 if (found->started) { 2529 ret = drv_cancel_remain_on_channel(local); 2530 if (WARN_ON_ONCE(ret)) { 2531 mutex_unlock(&local->mtx); 2532 return ret; 2533 } 2534 } 2535 2536 list_del(&found->list); 2537 2538 if (found->started) 2539 ieee80211_start_next_roc(local); 2540 mutex_unlock(&local->mtx); 2541 2542 ieee80211_roc_notify_destroy(found); 2543 } else { 2544 /* work may be pending so use it all the time */ 2545 found->abort = true; 2546 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2547 2548 mutex_unlock(&local->mtx); 2549 2550 /* work will clean up etc */ 2551 flush_delayed_work(&found->work); 2552 } 2553 2554 return 0; 2555 } 2556 2557 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2558 struct wireless_dev *wdev, 2559 u64 cookie) 2560 { 2561 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2562 struct ieee80211_local *local = sdata->local; 2563 2564 return ieee80211_cancel_roc(local, cookie, false); 2565 } 2566 2567 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2568 struct ieee80211_channel *chan, bool offchan, 2569 unsigned int wait, const u8 *buf, size_t len, 2570 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2571 { 2572 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2573 struct ieee80211_local *local = sdata->local; 2574 struct sk_buff *skb; 2575 struct sta_info *sta; 2576 const struct ieee80211_mgmt *mgmt = (void *)buf; 2577 bool need_offchan = false; 2578 u32 flags; 2579 int ret; 2580 2581 if (dont_wait_for_ack) 2582 flags = IEEE80211_TX_CTL_NO_ACK; 2583 else 2584 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2585 IEEE80211_TX_CTL_REQ_TX_STATUS; 2586 2587 if (no_cck) 2588 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2589 2590 switch (sdata->vif.type) { 2591 case NL80211_IFTYPE_ADHOC: 2592 if (!sdata->vif.bss_conf.ibss_joined) 2593 need_offchan = true; 2594 /* fall through */ 2595 #ifdef CONFIG_MAC80211_MESH 2596 case NL80211_IFTYPE_MESH_POINT: 2597 if (ieee80211_vif_is_mesh(&sdata->vif) && 2598 !sdata->u.mesh.mesh_id_len) 2599 need_offchan = true; 2600 /* fall through */ 2601 #endif 2602 case NL80211_IFTYPE_AP: 2603 case NL80211_IFTYPE_AP_VLAN: 2604 case NL80211_IFTYPE_P2P_GO: 2605 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2606 !ieee80211_vif_is_mesh(&sdata->vif) && 2607 !rcu_access_pointer(sdata->bss->beacon)) 2608 need_offchan = true; 2609 if (!ieee80211_is_action(mgmt->frame_control) || 2610 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2611 break; 2612 rcu_read_lock(); 2613 sta = sta_info_get(sdata, mgmt->da); 2614 rcu_read_unlock(); 2615 if (!sta) 2616 return -ENOLINK; 2617 break; 2618 case NL80211_IFTYPE_STATION: 2619 case NL80211_IFTYPE_P2P_CLIENT: 2620 if (!sdata->u.mgd.associated) 2621 need_offchan = true; 2622 break; 2623 case NL80211_IFTYPE_P2P_DEVICE: 2624 need_offchan = true; 2625 break; 2626 default: 2627 return -EOPNOTSUPP; 2628 } 2629 2630 mutex_lock(&local->mtx); 2631 2632 /* Check if the operating channel is the requested channel */ 2633 if (!need_offchan) { 2634 struct ieee80211_chanctx_conf *chanctx_conf; 2635 2636 rcu_read_lock(); 2637 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2638 2639 if (chanctx_conf) 2640 need_offchan = chan != chanctx_conf->def.chan; 2641 else 2642 need_offchan = true; 2643 rcu_read_unlock(); 2644 } 2645 2646 if (need_offchan && !offchan) { 2647 ret = -EBUSY; 2648 goto out_unlock; 2649 } 2650 2651 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2652 if (!skb) { 2653 ret = -ENOMEM; 2654 goto out_unlock; 2655 } 2656 skb_reserve(skb, local->hw.extra_tx_headroom); 2657 2658 memcpy(skb_put(skb, len), buf, len); 2659 2660 IEEE80211_SKB_CB(skb)->flags = flags; 2661 2662 skb->dev = sdata->dev; 2663 2664 if (!need_offchan) { 2665 *cookie = (unsigned long) skb; 2666 ieee80211_tx_skb(sdata, skb); 2667 ret = 0; 2668 goto out_unlock; 2669 } 2670 2671 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2672 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2673 IEEE80211_SKB_CB(skb)->hw_queue = 2674 local->hw.offchannel_tx_hw_queue; 2675 2676 /* This will handle all kinds of coalescing and immediate TX */ 2677 ret = ieee80211_start_roc_work(local, sdata, chan, 2678 wait, cookie, skb); 2679 if (ret) 2680 kfree_skb(skb); 2681 out_unlock: 2682 mutex_unlock(&local->mtx); 2683 return ret; 2684 } 2685 2686 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2687 struct wireless_dev *wdev, 2688 u64 cookie) 2689 { 2690 struct ieee80211_local *local = wiphy_priv(wiphy); 2691 2692 return ieee80211_cancel_roc(local, cookie, true); 2693 } 2694 2695 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2696 struct wireless_dev *wdev, 2697 u16 frame_type, bool reg) 2698 { 2699 struct ieee80211_local *local = wiphy_priv(wiphy); 2700 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2701 2702 switch (frame_type) { 2703 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: 2704 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 2705 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2706 2707 if (reg) 2708 ifibss->auth_frame_registrations++; 2709 else 2710 ifibss->auth_frame_registrations--; 2711 } 2712 break; 2713 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2714 if (reg) 2715 local->probe_req_reg++; 2716 else 2717 local->probe_req_reg--; 2718 2719 if (!local->open_count) 2720 break; 2721 2722 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2723 break; 2724 default: 2725 break; 2726 } 2727 } 2728 2729 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2730 { 2731 struct ieee80211_local *local = wiphy_priv(wiphy); 2732 2733 if (local->started) 2734 return -EOPNOTSUPP; 2735 2736 return drv_set_antenna(local, tx_ant, rx_ant); 2737 } 2738 2739 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2740 { 2741 struct ieee80211_local *local = wiphy_priv(wiphy); 2742 2743 return drv_get_antenna(local, tx_ant, rx_ant); 2744 } 2745 2746 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2747 { 2748 struct ieee80211_local *local = wiphy_priv(wiphy); 2749 2750 return drv_set_ringparam(local, tx, rx); 2751 } 2752 2753 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2754 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2755 { 2756 struct ieee80211_local *local = wiphy_priv(wiphy); 2757 2758 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2759 } 2760 2761 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2762 struct net_device *dev, 2763 struct cfg80211_gtk_rekey_data *data) 2764 { 2765 struct ieee80211_local *local = wiphy_priv(wiphy); 2766 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2767 2768 if (!local->ops->set_rekey_data) 2769 return -EOPNOTSUPP; 2770 2771 drv_set_rekey_data(local, sdata, data); 2772 2773 return 0; 2774 } 2775 2776 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2777 { 2778 u8 *pos = (void *)skb_put(skb, 7); 2779 2780 *pos++ = WLAN_EID_EXT_CAPABILITY; 2781 *pos++ = 5; /* len */ 2782 *pos++ = 0x0; 2783 *pos++ = 0x0; 2784 *pos++ = 0x0; 2785 *pos++ = 0x0; 2786 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2787 } 2788 2789 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2790 { 2791 struct ieee80211_local *local = sdata->local; 2792 u16 capab; 2793 2794 capab = 0; 2795 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 2796 return capab; 2797 2798 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2799 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2800 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2801 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2802 2803 return capab; 2804 } 2805 2806 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2807 u8 *peer, u8 *bssid) 2808 { 2809 struct ieee80211_tdls_lnkie *lnkid; 2810 2811 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2812 2813 lnkid->ie_type = WLAN_EID_LINK_ID; 2814 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2815 2816 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2817 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2818 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2819 } 2820 2821 static int 2822 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2823 u8 *peer, u8 action_code, u8 dialog_token, 2824 u16 status_code, struct sk_buff *skb) 2825 { 2826 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2827 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 2828 struct ieee80211_tdls_data *tf; 2829 2830 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 2831 2832 memcpy(tf->da, peer, ETH_ALEN); 2833 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 2834 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 2835 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 2836 2837 switch (action_code) { 2838 case WLAN_TDLS_SETUP_REQUEST: 2839 tf->category = WLAN_CATEGORY_TDLS; 2840 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 2841 2842 skb_put(skb, sizeof(tf->u.setup_req)); 2843 tf->u.setup_req.dialog_token = dialog_token; 2844 tf->u.setup_req.capability = 2845 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2846 2847 ieee80211_add_srates_ie(sdata, skb, false, band); 2848 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 2849 ieee80211_tdls_add_ext_capab(skb); 2850 break; 2851 case WLAN_TDLS_SETUP_RESPONSE: 2852 tf->category = WLAN_CATEGORY_TDLS; 2853 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 2854 2855 skb_put(skb, sizeof(tf->u.setup_resp)); 2856 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 2857 tf->u.setup_resp.dialog_token = dialog_token; 2858 tf->u.setup_resp.capability = 2859 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2860 2861 ieee80211_add_srates_ie(sdata, skb, false, band); 2862 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 2863 ieee80211_tdls_add_ext_capab(skb); 2864 break; 2865 case WLAN_TDLS_SETUP_CONFIRM: 2866 tf->category = WLAN_CATEGORY_TDLS; 2867 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 2868 2869 skb_put(skb, sizeof(tf->u.setup_cfm)); 2870 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 2871 tf->u.setup_cfm.dialog_token = dialog_token; 2872 break; 2873 case WLAN_TDLS_TEARDOWN: 2874 tf->category = WLAN_CATEGORY_TDLS; 2875 tf->action_code = WLAN_TDLS_TEARDOWN; 2876 2877 skb_put(skb, sizeof(tf->u.teardown)); 2878 tf->u.teardown.reason_code = cpu_to_le16(status_code); 2879 break; 2880 case WLAN_TDLS_DISCOVERY_REQUEST: 2881 tf->category = WLAN_CATEGORY_TDLS; 2882 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 2883 2884 skb_put(skb, sizeof(tf->u.discover_req)); 2885 tf->u.discover_req.dialog_token = dialog_token; 2886 break; 2887 default: 2888 return -EINVAL; 2889 } 2890 2891 return 0; 2892 } 2893 2894 static int 2895 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 2896 u8 *peer, u8 action_code, u8 dialog_token, 2897 u16 status_code, struct sk_buff *skb) 2898 { 2899 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2900 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 2901 struct ieee80211_mgmt *mgmt; 2902 2903 mgmt = (void *)skb_put(skb, 24); 2904 memset(mgmt, 0, 24); 2905 memcpy(mgmt->da, peer, ETH_ALEN); 2906 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2907 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 2908 2909 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2910 IEEE80211_STYPE_ACTION); 2911 2912 switch (action_code) { 2913 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2914 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 2915 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 2916 mgmt->u.action.u.tdls_discover_resp.action_code = 2917 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 2918 mgmt->u.action.u.tdls_discover_resp.dialog_token = 2919 dialog_token; 2920 mgmt->u.action.u.tdls_discover_resp.capability = 2921 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2922 2923 ieee80211_add_srates_ie(sdata, skb, false, band); 2924 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 2925 ieee80211_tdls_add_ext_capab(skb); 2926 break; 2927 default: 2928 return -EINVAL; 2929 } 2930 2931 return 0; 2932 } 2933 2934 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2935 u8 *peer, u8 action_code, u8 dialog_token, 2936 u16 status_code, const u8 *extra_ies, 2937 size_t extra_ies_len) 2938 { 2939 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2940 struct ieee80211_local *local = sdata->local; 2941 struct sk_buff *skb = NULL; 2942 bool send_direct; 2943 int ret; 2944 2945 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2946 return -ENOTSUPP; 2947 2948 /* make sure we are in managed mode, and associated */ 2949 if (sdata->vif.type != NL80211_IFTYPE_STATION || 2950 !sdata->u.mgd.associated) 2951 return -EINVAL; 2952 2953 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 2954 action_code, peer); 2955 2956 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 2957 max(sizeof(struct ieee80211_mgmt), 2958 sizeof(struct ieee80211_tdls_data)) + 2959 50 + /* supported rates */ 2960 7 + /* ext capab */ 2961 extra_ies_len + 2962 sizeof(struct ieee80211_tdls_lnkie)); 2963 if (!skb) 2964 return -ENOMEM; 2965 2966 skb_reserve(skb, local->hw.extra_tx_headroom); 2967 2968 switch (action_code) { 2969 case WLAN_TDLS_SETUP_REQUEST: 2970 case WLAN_TDLS_SETUP_RESPONSE: 2971 case WLAN_TDLS_SETUP_CONFIRM: 2972 case WLAN_TDLS_TEARDOWN: 2973 case WLAN_TDLS_DISCOVERY_REQUEST: 2974 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 2975 action_code, dialog_token, 2976 status_code, skb); 2977 send_direct = false; 2978 break; 2979 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2980 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 2981 dialog_token, status_code, 2982 skb); 2983 send_direct = true; 2984 break; 2985 default: 2986 ret = -ENOTSUPP; 2987 break; 2988 } 2989 2990 if (ret < 0) 2991 goto fail; 2992 2993 if (extra_ies_len) 2994 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 2995 2996 /* the TDLS link IE is always added last */ 2997 switch (action_code) { 2998 case WLAN_TDLS_SETUP_REQUEST: 2999 case WLAN_TDLS_SETUP_CONFIRM: 3000 case WLAN_TDLS_TEARDOWN: 3001 case WLAN_TDLS_DISCOVERY_REQUEST: 3002 /* we are the initiator */ 3003 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3004 sdata->u.mgd.bssid); 3005 break; 3006 case WLAN_TDLS_SETUP_RESPONSE: 3007 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3008 /* we are the responder */ 3009 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3010 sdata->u.mgd.bssid); 3011 break; 3012 default: 3013 ret = -ENOTSUPP; 3014 goto fail; 3015 } 3016 3017 if (send_direct) { 3018 ieee80211_tx_skb(sdata, skb); 3019 return 0; 3020 } 3021 3022 /* 3023 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3024 * we should default to AC_VI. 3025 */ 3026 switch (action_code) { 3027 case WLAN_TDLS_SETUP_REQUEST: 3028 case WLAN_TDLS_SETUP_RESPONSE: 3029 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3030 skb->priority = 2; 3031 break; 3032 default: 3033 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3034 skb->priority = 5; 3035 break; 3036 } 3037 3038 /* disable bottom halves when entering the Tx path */ 3039 local_bh_disable(); 3040 ret = ieee80211_subif_start_xmit(skb, dev); 3041 local_bh_enable(); 3042 3043 return ret; 3044 3045 fail: 3046 dev_kfree_skb(skb); 3047 return ret; 3048 } 3049 3050 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3051 u8 *peer, enum nl80211_tdls_operation oper) 3052 { 3053 struct sta_info *sta; 3054 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3055 3056 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3057 return -ENOTSUPP; 3058 3059 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3060 return -EINVAL; 3061 3062 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3063 3064 switch (oper) { 3065 case NL80211_TDLS_ENABLE_LINK: 3066 rcu_read_lock(); 3067 sta = sta_info_get(sdata, peer); 3068 if (!sta) { 3069 rcu_read_unlock(); 3070 return -ENOLINK; 3071 } 3072 3073 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3074 rcu_read_unlock(); 3075 break; 3076 case NL80211_TDLS_DISABLE_LINK: 3077 return sta_info_destroy_addr(sdata, peer); 3078 case NL80211_TDLS_TEARDOWN: 3079 case NL80211_TDLS_SETUP: 3080 case NL80211_TDLS_DISCOVERY_REQ: 3081 /* We don't support in-driver setup/teardown/discovery */ 3082 return -ENOTSUPP; 3083 default: 3084 return -ENOTSUPP; 3085 } 3086 3087 return 0; 3088 } 3089 3090 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3091 const u8 *peer, u64 *cookie) 3092 { 3093 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3094 struct ieee80211_local *local = sdata->local; 3095 struct ieee80211_qos_hdr *nullfunc; 3096 struct sk_buff *skb; 3097 int size = sizeof(*nullfunc); 3098 __le16 fc; 3099 bool qos; 3100 struct ieee80211_tx_info *info; 3101 struct sta_info *sta; 3102 struct ieee80211_chanctx_conf *chanctx_conf; 3103 enum ieee80211_band band; 3104 3105 rcu_read_lock(); 3106 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3107 if (WARN_ON(!chanctx_conf)) { 3108 rcu_read_unlock(); 3109 return -EINVAL; 3110 } 3111 band = chanctx_conf->def.chan->band; 3112 sta = sta_info_get(sdata, peer); 3113 if (sta) { 3114 qos = test_sta_flag(sta, WLAN_STA_WME); 3115 } else { 3116 rcu_read_unlock(); 3117 return -ENOLINK; 3118 } 3119 3120 if (qos) { 3121 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3122 IEEE80211_STYPE_QOS_NULLFUNC | 3123 IEEE80211_FCTL_FROMDS); 3124 } else { 3125 size -= 2; 3126 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3127 IEEE80211_STYPE_NULLFUNC | 3128 IEEE80211_FCTL_FROMDS); 3129 } 3130 3131 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3132 if (!skb) { 3133 rcu_read_unlock(); 3134 return -ENOMEM; 3135 } 3136 3137 skb->dev = dev; 3138 3139 skb_reserve(skb, local->hw.extra_tx_headroom); 3140 3141 nullfunc = (void *) skb_put(skb, size); 3142 nullfunc->frame_control = fc; 3143 nullfunc->duration_id = 0; 3144 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3145 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3146 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3147 nullfunc->seq_ctrl = 0; 3148 3149 info = IEEE80211_SKB_CB(skb); 3150 3151 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3152 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3153 3154 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3155 skb->priority = 7; 3156 if (qos) 3157 nullfunc->qos_ctrl = cpu_to_le16(7); 3158 3159 local_bh_disable(); 3160 ieee80211_xmit(sdata, skb, band); 3161 local_bh_enable(); 3162 rcu_read_unlock(); 3163 3164 *cookie = (unsigned long) skb; 3165 return 0; 3166 } 3167 3168 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3169 struct wireless_dev *wdev, 3170 struct cfg80211_chan_def *chandef) 3171 { 3172 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3173 struct ieee80211_chanctx_conf *chanctx_conf; 3174 int ret = -ENODATA; 3175 3176 rcu_read_lock(); 3177 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3178 if (chanctx_conf) { 3179 *chandef = chanctx_conf->def; 3180 ret = 0; 3181 } 3182 rcu_read_unlock(); 3183 3184 return ret; 3185 } 3186 3187 #ifdef CONFIG_PM 3188 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3189 { 3190 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3191 } 3192 #endif 3193 3194 struct cfg80211_ops mac80211_config_ops = { 3195 .add_virtual_intf = ieee80211_add_iface, 3196 .del_virtual_intf = ieee80211_del_iface, 3197 .change_virtual_intf = ieee80211_change_iface, 3198 .start_p2p_device = ieee80211_start_p2p_device, 3199 .stop_p2p_device = ieee80211_stop_p2p_device, 3200 .add_key = ieee80211_add_key, 3201 .del_key = ieee80211_del_key, 3202 .get_key = ieee80211_get_key, 3203 .set_default_key = ieee80211_config_default_key, 3204 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3205 .start_ap = ieee80211_start_ap, 3206 .change_beacon = ieee80211_change_beacon, 3207 .stop_ap = ieee80211_stop_ap, 3208 .add_station = ieee80211_add_station, 3209 .del_station = ieee80211_del_station, 3210 .change_station = ieee80211_change_station, 3211 .get_station = ieee80211_get_station, 3212 .dump_station = ieee80211_dump_station, 3213 .dump_survey = ieee80211_dump_survey, 3214 #ifdef CONFIG_MAC80211_MESH 3215 .add_mpath = ieee80211_add_mpath, 3216 .del_mpath = ieee80211_del_mpath, 3217 .change_mpath = ieee80211_change_mpath, 3218 .get_mpath = ieee80211_get_mpath, 3219 .dump_mpath = ieee80211_dump_mpath, 3220 .update_mesh_config = ieee80211_update_mesh_config, 3221 .get_mesh_config = ieee80211_get_mesh_config, 3222 .join_mesh = ieee80211_join_mesh, 3223 .leave_mesh = ieee80211_leave_mesh, 3224 #endif 3225 .change_bss = ieee80211_change_bss, 3226 .set_txq_params = ieee80211_set_txq_params, 3227 .set_monitor_channel = ieee80211_set_monitor_channel, 3228 .suspend = ieee80211_suspend, 3229 .resume = ieee80211_resume, 3230 .scan = ieee80211_scan, 3231 .sched_scan_start = ieee80211_sched_scan_start, 3232 .sched_scan_stop = ieee80211_sched_scan_stop, 3233 .auth = ieee80211_auth, 3234 .assoc = ieee80211_assoc, 3235 .deauth = ieee80211_deauth, 3236 .disassoc = ieee80211_disassoc, 3237 .join_ibss = ieee80211_join_ibss, 3238 .leave_ibss = ieee80211_leave_ibss, 3239 .set_mcast_rate = ieee80211_set_mcast_rate, 3240 .set_wiphy_params = ieee80211_set_wiphy_params, 3241 .set_tx_power = ieee80211_set_tx_power, 3242 .get_tx_power = ieee80211_get_tx_power, 3243 .set_wds_peer = ieee80211_set_wds_peer, 3244 .rfkill_poll = ieee80211_rfkill_poll, 3245 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3246 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3247 .set_power_mgmt = ieee80211_set_power_mgmt, 3248 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3249 .remain_on_channel = ieee80211_remain_on_channel, 3250 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3251 .mgmt_tx = ieee80211_mgmt_tx, 3252 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3253 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3254 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3255 .set_antenna = ieee80211_set_antenna, 3256 .get_antenna = ieee80211_get_antenna, 3257 .set_ringparam = ieee80211_set_ringparam, 3258 .get_ringparam = ieee80211_get_ringparam, 3259 .set_rekey_data = ieee80211_set_rekey_data, 3260 .tdls_oper = ieee80211_tdls_oper, 3261 .tdls_mgmt = ieee80211_tdls_mgmt, 3262 .probe_client = ieee80211_probe_client, 3263 .set_noack_map = ieee80211_set_noack_map, 3264 #ifdef CONFIG_PM 3265 .set_wakeup = ieee80211_set_wakeup, 3266 #endif 3267 .get_et_sset_count = ieee80211_get_et_sset_count, 3268 .get_et_stats = ieee80211_get_et_stats, 3269 .get_et_strings = ieee80211_get_et_strings, 3270 .get_channel = ieee80211_cfg_get_channel, 3271 }; 3272