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, true); 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 STATION_INFO_LOCAL_PM | 497 STATION_INFO_PEER_PM | 498 STATION_INFO_NONPEER_PM; 499 500 sinfo->llid = le16_to_cpu(sta->llid); 501 sinfo->plid = le16_to_cpu(sta->plid); 502 sinfo->plink_state = sta->plink_state; 503 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 504 sinfo->filled |= STATION_INFO_T_OFFSET; 505 sinfo->t_offset = sta->t_offset; 506 } 507 sinfo->local_pm = sta->local_pm; 508 sinfo->peer_pm = sta->peer_pm; 509 sinfo->nonpeer_pm = sta->nonpeer_pm; 510 #endif 511 } 512 513 sinfo->bss_param.flags = 0; 514 if (sdata->vif.bss_conf.use_cts_prot) 515 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 516 if (sdata->vif.bss_conf.use_short_preamble) 517 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 518 if (sdata->vif.bss_conf.use_short_slot) 519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 520 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 521 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 522 523 sinfo->sta_flags.set = 0; 524 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 525 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 526 BIT(NL80211_STA_FLAG_WME) | 527 BIT(NL80211_STA_FLAG_MFP) | 528 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 529 BIT(NL80211_STA_FLAG_ASSOCIATED) | 530 BIT(NL80211_STA_FLAG_TDLS_PEER); 531 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 532 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 533 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 534 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 535 if (test_sta_flag(sta, WLAN_STA_WME)) 536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 537 if (test_sta_flag(sta, WLAN_STA_MFP)) 538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 539 if (test_sta_flag(sta, WLAN_STA_AUTH)) 540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 541 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 543 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 545 } 546 547 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 548 "rx_packets", "rx_bytes", "wep_weak_iv_count", 549 "rx_duplicates", "rx_fragments", "rx_dropped", 550 "tx_packets", "tx_bytes", "tx_fragments", 551 "tx_filtered", "tx_retry_failed", "tx_retries", 552 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 553 "channel", "noise", "ch_time", "ch_time_busy", 554 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 555 }; 556 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 557 558 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 559 struct net_device *dev, 560 int sset) 561 { 562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 563 int rv = 0; 564 565 if (sset == ETH_SS_STATS) 566 rv += STA_STATS_LEN; 567 568 rv += drv_get_et_sset_count(sdata, sset); 569 570 if (rv == 0) 571 return -EOPNOTSUPP; 572 return rv; 573 } 574 575 static void ieee80211_get_et_stats(struct wiphy *wiphy, 576 struct net_device *dev, 577 struct ethtool_stats *stats, 578 u64 *data) 579 { 580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 581 struct ieee80211_chanctx_conf *chanctx_conf; 582 struct ieee80211_channel *channel; 583 struct sta_info *sta; 584 struct ieee80211_local *local = sdata->local; 585 struct station_info sinfo; 586 struct survey_info survey; 587 int i, q; 588 #define STA_STATS_SURVEY_LEN 7 589 590 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 591 592 #define ADD_STA_STATS(sta) \ 593 do { \ 594 data[i++] += sta->rx_packets; \ 595 data[i++] += sta->rx_bytes; \ 596 data[i++] += sta->wep_weak_iv_count; \ 597 data[i++] += sta->num_duplicates; \ 598 data[i++] += sta->rx_fragments; \ 599 data[i++] += sta->rx_dropped; \ 600 \ 601 data[i++] += sta->tx_packets; \ 602 data[i++] += sta->tx_bytes; \ 603 data[i++] += sta->tx_fragments; \ 604 data[i++] += sta->tx_filtered_count; \ 605 data[i++] += sta->tx_retry_failed; \ 606 data[i++] += sta->tx_retry_count; \ 607 data[i++] += sta->beacon_loss_count; \ 608 } while (0) 609 610 /* For Managed stations, find the single station based on BSSID 611 * and use that. For interface types, iterate through all available 612 * stations and add stats for any station that is assigned to this 613 * network device. 614 */ 615 616 mutex_lock(&local->sta_mtx); 617 618 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 619 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 620 621 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 622 goto do_survey; 623 624 i = 0; 625 ADD_STA_STATS(sta); 626 627 data[i++] = sta->sta_state; 628 629 sinfo.filled = 0; 630 sta_set_sinfo(sta, &sinfo); 631 632 if (sinfo.filled & STATION_INFO_TX_BITRATE) 633 data[i] = 100000 * 634 cfg80211_calculate_bitrate(&sinfo.txrate); 635 i++; 636 if (sinfo.filled & STATION_INFO_RX_BITRATE) 637 data[i] = 100000 * 638 cfg80211_calculate_bitrate(&sinfo.rxrate); 639 i++; 640 641 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 642 data[i] = (u8)sinfo.signal_avg; 643 i++; 644 } else { 645 list_for_each_entry(sta, &local->sta_list, list) { 646 /* Make sure this station belongs to the proper dev */ 647 if (sta->sdata->dev != dev) 648 continue; 649 650 i = 0; 651 ADD_STA_STATS(sta); 652 } 653 } 654 655 do_survey: 656 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 657 /* Get survey stats for current channel */ 658 survey.filled = 0; 659 660 rcu_read_lock(); 661 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 662 if (chanctx_conf) 663 channel = chanctx_conf->def.chan; 664 else 665 channel = NULL; 666 rcu_read_unlock(); 667 668 if (channel) { 669 q = 0; 670 do { 671 survey.filled = 0; 672 if (drv_get_survey(local, q, &survey) != 0) { 673 survey.filled = 0; 674 break; 675 } 676 q++; 677 } while (channel != survey.channel); 678 } 679 680 if (survey.filled) 681 data[i++] = survey.channel->center_freq; 682 else 683 data[i++] = 0; 684 if (survey.filled & SURVEY_INFO_NOISE_DBM) 685 data[i++] = (u8)survey.noise; 686 else 687 data[i++] = -1LL; 688 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 689 data[i++] = survey.channel_time; 690 else 691 data[i++] = -1LL; 692 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 693 data[i++] = survey.channel_time_busy; 694 else 695 data[i++] = -1LL; 696 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 697 data[i++] = survey.channel_time_ext_busy; 698 else 699 data[i++] = -1LL; 700 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 701 data[i++] = survey.channel_time_rx; 702 else 703 data[i++] = -1LL; 704 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 705 data[i++] = survey.channel_time_tx; 706 else 707 data[i++] = -1LL; 708 709 mutex_unlock(&local->sta_mtx); 710 711 if (WARN_ON(i != STA_STATS_LEN)) 712 return; 713 714 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 715 } 716 717 static void ieee80211_get_et_strings(struct wiphy *wiphy, 718 struct net_device *dev, 719 u32 sset, u8 *data) 720 { 721 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 722 int sz_sta_stats = 0; 723 724 if (sset == ETH_SS_STATS) { 725 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 726 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); 727 } 728 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 729 } 730 731 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 732 int idx, u8 *mac, struct station_info *sinfo) 733 { 734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 735 struct ieee80211_local *local = sdata->local; 736 struct sta_info *sta; 737 int ret = -ENOENT; 738 739 mutex_lock(&local->sta_mtx); 740 741 sta = sta_info_get_by_idx(sdata, idx); 742 if (sta) { 743 ret = 0; 744 memcpy(mac, sta->sta.addr, ETH_ALEN); 745 sta_set_sinfo(sta, sinfo); 746 } 747 748 mutex_unlock(&local->sta_mtx); 749 750 return ret; 751 } 752 753 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 754 int idx, struct survey_info *survey) 755 { 756 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 757 758 return drv_get_survey(local, idx, survey); 759 } 760 761 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 762 u8 *mac, struct station_info *sinfo) 763 { 764 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 765 struct ieee80211_local *local = sdata->local; 766 struct sta_info *sta; 767 int ret = -ENOENT; 768 769 mutex_lock(&local->sta_mtx); 770 771 sta = sta_info_get_bss(sdata, mac); 772 if (sta) { 773 ret = 0; 774 sta_set_sinfo(sta, sinfo); 775 } 776 777 mutex_unlock(&local->sta_mtx); 778 779 return ret; 780 } 781 782 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 783 struct cfg80211_chan_def *chandef) 784 { 785 struct ieee80211_local *local = wiphy_priv(wiphy); 786 struct ieee80211_sub_if_data *sdata; 787 int ret = 0; 788 789 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 790 return 0; 791 792 mutex_lock(&local->iflist_mtx); 793 if (local->use_chanctx) { 794 sdata = rcu_dereference_protected( 795 local->monitor_sdata, 796 lockdep_is_held(&local->iflist_mtx)); 797 if (sdata) { 798 ieee80211_vif_release_channel(sdata); 799 ret = ieee80211_vif_use_channel(sdata, chandef, 800 IEEE80211_CHANCTX_EXCLUSIVE); 801 } 802 } else if (local->open_count == local->monitors) { 803 local->_oper_channel = chandef->chan; 804 local->_oper_channel_type = cfg80211_get_chandef_type(chandef); 805 ieee80211_hw_config(local, 0); 806 } 807 808 if (ret == 0) 809 local->monitor_chandef = *chandef; 810 mutex_unlock(&local->iflist_mtx); 811 812 return ret; 813 } 814 815 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 816 const u8 *resp, size_t resp_len) 817 { 818 struct probe_resp *new, *old; 819 820 if (!resp || !resp_len) 821 return 1; 822 823 old = rtnl_dereference(sdata->u.ap.probe_resp); 824 825 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 826 if (!new) 827 return -ENOMEM; 828 829 new->len = resp_len; 830 memcpy(new->data, resp, resp_len); 831 832 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 833 if (old) 834 kfree_rcu(old, rcu_head); 835 836 return 0; 837 } 838 839 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 840 struct cfg80211_beacon_data *params) 841 { 842 struct beacon_data *new, *old; 843 int new_head_len, new_tail_len; 844 int size, err; 845 u32 changed = BSS_CHANGED_BEACON; 846 847 old = rtnl_dereference(sdata->u.ap.beacon); 848 849 /* Need to have a beacon head if we don't have one yet */ 850 if (!params->head && !old) 851 return -EINVAL; 852 853 /* new or old head? */ 854 if (params->head) 855 new_head_len = params->head_len; 856 else 857 new_head_len = old->head_len; 858 859 /* new or old tail? */ 860 if (params->tail || !old) 861 /* params->tail_len will be zero for !params->tail */ 862 new_tail_len = params->tail_len; 863 else 864 new_tail_len = old->tail_len; 865 866 size = sizeof(*new) + new_head_len + new_tail_len; 867 868 new = kzalloc(size, GFP_KERNEL); 869 if (!new) 870 return -ENOMEM; 871 872 /* start filling the new info now */ 873 874 /* 875 * pointers go into the block we allocated, 876 * memory is | beacon_data | head | tail | 877 */ 878 new->head = ((u8 *) new) + sizeof(*new); 879 new->tail = new->head + new_head_len; 880 new->head_len = new_head_len; 881 new->tail_len = new_tail_len; 882 883 /* copy in head */ 884 if (params->head) 885 memcpy(new->head, params->head, new_head_len); 886 else 887 memcpy(new->head, old->head, new_head_len); 888 889 /* copy in optional tail */ 890 if (params->tail) 891 memcpy(new->tail, params->tail, new_tail_len); 892 else 893 if (old) 894 memcpy(new->tail, old->tail, new_tail_len); 895 896 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 897 params->probe_resp_len); 898 if (err < 0) 899 return err; 900 if (err == 0) 901 changed |= BSS_CHANGED_AP_PROBE_RESP; 902 903 rcu_assign_pointer(sdata->u.ap.beacon, new); 904 905 if (old) 906 kfree_rcu(old, rcu_head); 907 908 return changed; 909 } 910 911 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 912 struct cfg80211_ap_settings *params) 913 { 914 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 915 struct beacon_data *old; 916 struct ieee80211_sub_if_data *vlan; 917 u32 changed = BSS_CHANGED_BEACON_INT | 918 BSS_CHANGED_BEACON_ENABLED | 919 BSS_CHANGED_BEACON | 920 BSS_CHANGED_SSID | 921 BSS_CHANGED_P2P_PS; 922 int err; 923 924 old = rtnl_dereference(sdata->u.ap.beacon); 925 if (old) 926 return -EALREADY; 927 928 /* TODO: make hostapd tell us what it wants */ 929 sdata->smps_mode = IEEE80211_SMPS_OFF; 930 sdata->needed_rx_chains = sdata->local->rx_chains; 931 sdata->radar_required = params->radar_required; 932 933 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 934 IEEE80211_CHANCTX_SHARED); 935 if (err) 936 return err; 937 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 938 939 /* 940 * Apply control port protocol, this allows us to 941 * not encrypt dynamic WEP control frames. 942 */ 943 sdata->control_port_protocol = params->crypto.control_port_ethertype; 944 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 945 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 946 vlan->control_port_protocol = 947 params->crypto.control_port_ethertype; 948 vlan->control_port_no_encrypt = 949 params->crypto.control_port_no_encrypt; 950 } 951 952 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 953 sdata->vif.bss_conf.dtim_period = params->dtim_period; 954 sdata->vif.bss_conf.enable_beacon = true; 955 956 sdata->vif.bss_conf.ssid_len = params->ssid_len; 957 if (params->ssid_len) 958 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 959 params->ssid_len); 960 sdata->vif.bss_conf.hidden_ssid = 961 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 962 963 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 964 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 965 966 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 967 if (err < 0) 968 return err; 969 changed |= err; 970 971 err = drv_start_ap(sdata->local, sdata); 972 if (err) { 973 old = rtnl_dereference(sdata->u.ap.beacon); 974 if (old) 975 kfree_rcu(old, rcu_head); 976 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 977 return err; 978 } 979 980 ieee80211_bss_info_change_notify(sdata, changed); 981 982 netif_carrier_on(dev); 983 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 984 netif_carrier_on(vlan->dev); 985 986 return 0; 987 } 988 989 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 990 struct cfg80211_beacon_data *params) 991 { 992 struct ieee80211_sub_if_data *sdata; 993 struct beacon_data *old; 994 int err; 995 996 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 997 998 old = rtnl_dereference(sdata->u.ap.beacon); 999 if (!old) 1000 return -ENOENT; 1001 1002 err = ieee80211_assign_beacon(sdata, params); 1003 if (err < 0) 1004 return err; 1005 ieee80211_bss_info_change_notify(sdata, err); 1006 return 0; 1007 } 1008 1009 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1010 { 1011 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1012 struct ieee80211_sub_if_data *vlan; 1013 struct ieee80211_local *local = sdata->local; 1014 struct beacon_data *old_beacon; 1015 struct probe_resp *old_probe_resp; 1016 1017 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1018 if (!old_beacon) 1019 return -ENOENT; 1020 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1021 1022 /* turn off carrier for this interface and dependent VLANs */ 1023 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1024 netif_carrier_off(vlan->dev); 1025 netif_carrier_off(dev); 1026 1027 /* remove beacon and probe response */ 1028 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1029 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1030 kfree_rcu(old_beacon, rcu_head); 1031 if (old_probe_resp) 1032 kfree_rcu(old_probe_resp, rcu_head); 1033 1034 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1035 sta_info_flush_defer(vlan); 1036 sta_info_flush_defer(sdata); 1037 rcu_barrier(); 1038 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1039 sta_info_flush_cleanup(vlan); 1040 ieee80211_free_keys(vlan); 1041 } 1042 sta_info_flush_cleanup(sdata); 1043 ieee80211_free_keys(sdata); 1044 1045 sdata->vif.bss_conf.enable_beacon = false; 1046 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1047 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1048 1049 drv_stop_ap(sdata->local, sdata); 1050 1051 /* free all potentially still buffered bcast frames */ 1052 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1053 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1054 1055 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1056 ieee80211_vif_release_channel(sdata); 1057 1058 return 0; 1059 } 1060 1061 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1062 struct iapp_layer2_update { 1063 u8 da[ETH_ALEN]; /* broadcast */ 1064 u8 sa[ETH_ALEN]; /* STA addr */ 1065 __be16 len; /* 6 */ 1066 u8 dsap; /* 0 */ 1067 u8 ssap; /* 0 */ 1068 u8 control; 1069 u8 xid_info[3]; 1070 } __packed; 1071 1072 static void ieee80211_send_layer2_update(struct sta_info *sta) 1073 { 1074 struct iapp_layer2_update *msg; 1075 struct sk_buff *skb; 1076 1077 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1078 * bridge devices */ 1079 1080 skb = dev_alloc_skb(sizeof(*msg)); 1081 if (!skb) 1082 return; 1083 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1084 1085 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1086 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1087 1088 eth_broadcast_addr(msg->da); 1089 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1090 msg->len = htons(6); 1091 msg->dsap = 0; 1092 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1093 msg->control = 0xaf; /* XID response lsb.1111F101. 1094 * F=0 (no poll command; unsolicited frame) */ 1095 msg->xid_info[0] = 0x81; /* XID format identifier */ 1096 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1097 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1098 1099 skb->dev = sta->sdata->dev; 1100 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1101 memset(skb->cb, 0, sizeof(skb->cb)); 1102 netif_rx_ni(skb); 1103 } 1104 1105 static int sta_apply_auth_flags(struct ieee80211_local *local, 1106 struct sta_info *sta, 1107 u32 mask, u32 set) 1108 { 1109 int ret; 1110 1111 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1112 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1113 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1114 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1115 if (ret) 1116 return ret; 1117 } 1118 1119 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1120 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1121 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1122 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1123 if (ret) 1124 return ret; 1125 } 1126 1127 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1128 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1129 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1130 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1131 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1132 else 1133 ret = 0; 1134 if (ret) 1135 return ret; 1136 } 1137 1138 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1139 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1140 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1141 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1142 if (ret) 1143 return ret; 1144 } 1145 1146 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1147 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1148 test_sta_flag(sta, WLAN_STA_AUTH)) { 1149 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1150 if (ret) 1151 return ret; 1152 } 1153 1154 return 0; 1155 } 1156 1157 static int sta_apply_parameters(struct ieee80211_local *local, 1158 struct sta_info *sta, 1159 struct station_parameters *params) 1160 { 1161 int ret = 0; 1162 u32 rates; 1163 int i, j; 1164 struct ieee80211_supported_band *sband; 1165 struct ieee80211_sub_if_data *sdata = sta->sdata; 1166 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1167 u32 mask, set; 1168 1169 sband = local->hw.wiphy->bands[band]; 1170 1171 mask = params->sta_flags_mask; 1172 set = params->sta_flags_set; 1173 1174 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1175 /* 1176 * In mesh mode, ASSOCIATED isn't part of the nl80211 1177 * API but must follow AUTHENTICATED for driver state. 1178 */ 1179 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1180 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1181 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1182 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1183 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1184 /* 1185 * TDLS -- everything follows authorized, but 1186 * only becoming authorized is possible, not 1187 * going back 1188 */ 1189 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1190 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1191 BIT(NL80211_STA_FLAG_ASSOCIATED); 1192 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1193 BIT(NL80211_STA_FLAG_ASSOCIATED); 1194 } 1195 } 1196 1197 ret = sta_apply_auth_flags(local, sta, mask, set); 1198 if (ret) 1199 return ret; 1200 1201 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1202 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1203 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1204 else 1205 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1206 } 1207 1208 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1209 if (set & BIT(NL80211_STA_FLAG_WME)) { 1210 set_sta_flag(sta, WLAN_STA_WME); 1211 sta->sta.wme = true; 1212 } else { 1213 clear_sta_flag(sta, WLAN_STA_WME); 1214 sta->sta.wme = false; 1215 } 1216 } 1217 1218 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1219 if (set & BIT(NL80211_STA_FLAG_MFP)) 1220 set_sta_flag(sta, WLAN_STA_MFP); 1221 else 1222 clear_sta_flag(sta, WLAN_STA_MFP); 1223 } 1224 1225 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1226 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1227 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1228 else 1229 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1230 } 1231 1232 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1233 sta->sta.uapsd_queues = params->uapsd_queues; 1234 sta->sta.max_sp = params->max_sp; 1235 } 1236 1237 /* 1238 * cfg80211 validates this (1-2007) and allows setting the AID 1239 * only when creating a new station entry 1240 */ 1241 if (params->aid) 1242 sta->sta.aid = params->aid; 1243 1244 /* 1245 * Some of the following updates would be racy if called on an 1246 * existing station, via ieee80211_change_station(). However, 1247 * all such changes are rejected by cfg80211 except for updates 1248 * changing the supported rates on an existing but not yet used 1249 * TDLS peer. 1250 */ 1251 1252 if (params->listen_interval >= 0) 1253 sta->listen_interval = params->listen_interval; 1254 1255 if (params->supported_rates) { 1256 rates = 0; 1257 1258 for (i = 0; i < params->supported_rates_len; i++) { 1259 int rate = (params->supported_rates[i] & 0x7f) * 5; 1260 for (j = 0; j < sband->n_bitrates; j++) { 1261 if (sband->bitrates[j].bitrate == rate) 1262 rates |= BIT(j); 1263 } 1264 } 1265 sta->sta.supp_rates[band] = rates; 1266 } 1267 1268 if (params->ht_capa) 1269 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1270 params->ht_capa, sta); 1271 1272 if (params->vht_capa) 1273 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1274 params->vht_capa, sta); 1275 1276 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1277 #ifdef CONFIG_MAC80211_MESH 1278 u32 changed = 0; 1279 1280 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1281 switch (params->plink_state) { 1282 case NL80211_PLINK_ESTAB: 1283 if (sta->plink_state != NL80211_PLINK_ESTAB) 1284 changed = mesh_plink_inc_estab_count( 1285 sdata); 1286 sta->plink_state = params->plink_state; 1287 1288 ieee80211_mps_sta_status_update(sta); 1289 changed |= ieee80211_mps_set_sta_local_pm(sta, 1290 sdata->u.mesh.mshcfg.power_mode); 1291 break; 1292 case NL80211_PLINK_LISTEN: 1293 case NL80211_PLINK_BLOCKED: 1294 case NL80211_PLINK_OPN_SNT: 1295 case NL80211_PLINK_OPN_RCVD: 1296 case NL80211_PLINK_CNF_RCVD: 1297 case NL80211_PLINK_HOLDING: 1298 if (sta->plink_state == NL80211_PLINK_ESTAB) 1299 changed = mesh_plink_dec_estab_count( 1300 sdata); 1301 sta->plink_state = params->plink_state; 1302 1303 ieee80211_mps_sta_status_update(sta); 1304 changed |= 1305 ieee80211_mps_local_status_update(sdata); 1306 break; 1307 default: 1308 /* nothing */ 1309 break; 1310 } 1311 } 1312 1313 switch (params->plink_action) { 1314 case NL80211_PLINK_ACTION_NO_ACTION: 1315 /* nothing */ 1316 break; 1317 case NL80211_PLINK_ACTION_OPEN: 1318 changed |= mesh_plink_open(sta); 1319 break; 1320 case NL80211_PLINK_ACTION_BLOCK: 1321 changed |= mesh_plink_block(sta); 1322 break; 1323 } 1324 1325 if (params->local_pm) 1326 changed |= 1327 ieee80211_mps_set_sta_local_pm(sta, 1328 params->local_pm); 1329 ieee80211_bss_info_change_notify(sdata, changed); 1330 #endif 1331 } 1332 1333 return 0; 1334 } 1335 1336 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1337 u8 *mac, struct station_parameters *params) 1338 { 1339 struct ieee80211_local *local = wiphy_priv(wiphy); 1340 struct sta_info *sta; 1341 struct ieee80211_sub_if_data *sdata; 1342 int err; 1343 int layer2_update; 1344 1345 if (params->vlan) { 1346 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1347 1348 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1349 sdata->vif.type != NL80211_IFTYPE_AP) 1350 return -EINVAL; 1351 } else 1352 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1353 1354 if (ether_addr_equal(mac, sdata->vif.addr)) 1355 return -EINVAL; 1356 1357 if (is_multicast_ether_addr(mac)) 1358 return -EINVAL; 1359 1360 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1361 if (!sta) 1362 return -ENOMEM; 1363 1364 /* 1365 * defaults -- if userspace wants something else we'll 1366 * change it accordingly in sta_apply_parameters() 1367 */ 1368 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1369 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1370 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1371 } 1372 1373 err = sta_apply_parameters(local, sta, params); 1374 if (err) { 1375 sta_info_free(local, sta); 1376 return err; 1377 } 1378 1379 /* 1380 * for TDLS, rate control should be initialized only when 1381 * rates are known and station is marked authorized 1382 */ 1383 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1384 rate_control_rate_init(sta); 1385 1386 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1387 sdata->vif.type == NL80211_IFTYPE_AP; 1388 1389 err = sta_info_insert_rcu(sta); 1390 if (err) { 1391 rcu_read_unlock(); 1392 return err; 1393 } 1394 1395 if (layer2_update) 1396 ieee80211_send_layer2_update(sta); 1397 1398 rcu_read_unlock(); 1399 1400 return 0; 1401 } 1402 1403 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1404 u8 *mac) 1405 { 1406 struct ieee80211_sub_if_data *sdata; 1407 1408 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1409 1410 if (mac) 1411 return sta_info_destroy_addr_bss(sdata, mac); 1412 1413 sta_info_flush(sdata); 1414 return 0; 1415 } 1416 1417 static int ieee80211_change_station(struct wiphy *wiphy, 1418 struct net_device *dev, u8 *mac, 1419 struct station_parameters *params) 1420 { 1421 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1422 struct ieee80211_local *local = wiphy_priv(wiphy); 1423 struct sta_info *sta; 1424 struct ieee80211_sub_if_data *vlansdata; 1425 enum cfg80211_station_type statype; 1426 int err; 1427 1428 mutex_lock(&local->sta_mtx); 1429 1430 sta = sta_info_get_bss(sdata, mac); 1431 if (!sta) { 1432 err = -ENOENT; 1433 goto out_err; 1434 } 1435 1436 switch (sdata->vif.type) { 1437 case NL80211_IFTYPE_MESH_POINT: 1438 if (sdata->u.mesh.user_mpm) 1439 statype = CFG80211_STA_MESH_PEER_USER; 1440 else 1441 statype = CFG80211_STA_MESH_PEER_KERNEL; 1442 break; 1443 case NL80211_IFTYPE_ADHOC: 1444 statype = CFG80211_STA_IBSS; 1445 break; 1446 case NL80211_IFTYPE_STATION: 1447 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1448 statype = CFG80211_STA_AP_STA; 1449 break; 1450 } 1451 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1452 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1453 else 1454 statype = CFG80211_STA_TDLS_PEER_SETUP; 1455 break; 1456 case NL80211_IFTYPE_AP: 1457 case NL80211_IFTYPE_AP_VLAN: 1458 statype = CFG80211_STA_AP_CLIENT; 1459 break; 1460 default: 1461 err = -EOPNOTSUPP; 1462 goto out_err; 1463 } 1464 1465 err = cfg80211_check_station_change(wiphy, params, statype); 1466 if (err) 1467 goto out_err; 1468 1469 if (params->vlan && params->vlan != sta->sdata->dev) { 1470 bool prev_4addr = false; 1471 bool new_4addr = false; 1472 1473 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1474 1475 if (params->vlan->ieee80211_ptr->use_4addr) { 1476 if (vlansdata->u.vlan.sta) { 1477 err = -EBUSY; 1478 goto out_err; 1479 } 1480 1481 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1482 new_4addr = true; 1483 } 1484 1485 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1486 sta->sdata->u.vlan.sta) { 1487 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1488 prev_4addr = true; 1489 } 1490 1491 sta->sdata = vlansdata; 1492 1493 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1494 prev_4addr != new_4addr) { 1495 if (new_4addr) 1496 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1497 else 1498 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1499 } 1500 1501 ieee80211_send_layer2_update(sta); 1502 } 1503 1504 err = sta_apply_parameters(local, sta, params); 1505 if (err) 1506 goto out_err; 1507 1508 /* When peer becomes authorized, init rate control as well */ 1509 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1510 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1511 rate_control_rate_init(sta); 1512 1513 mutex_unlock(&local->sta_mtx); 1514 1515 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1516 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1517 ieee80211_recalc_ps(local, -1); 1518 ieee80211_recalc_ps_vif(sdata); 1519 } 1520 1521 return 0; 1522 out_err: 1523 mutex_unlock(&local->sta_mtx); 1524 return err; 1525 } 1526 1527 #ifdef CONFIG_MAC80211_MESH 1528 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1529 u8 *dst, u8 *next_hop) 1530 { 1531 struct ieee80211_sub_if_data *sdata; 1532 struct mesh_path *mpath; 1533 struct sta_info *sta; 1534 int err; 1535 1536 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1537 1538 rcu_read_lock(); 1539 sta = sta_info_get(sdata, next_hop); 1540 if (!sta) { 1541 rcu_read_unlock(); 1542 return -ENOENT; 1543 } 1544 1545 err = mesh_path_add(sdata, dst); 1546 if (err) { 1547 rcu_read_unlock(); 1548 return err; 1549 } 1550 1551 mpath = mesh_path_lookup(sdata, dst); 1552 if (!mpath) { 1553 rcu_read_unlock(); 1554 return -ENXIO; 1555 } 1556 mesh_path_fix_nexthop(mpath, sta); 1557 1558 rcu_read_unlock(); 1559 return 0; 1560 } 1561 1562 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1563 u8 *dst) 1564 { 1565 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1566 1567 if (dst) 1568 return mesh_path_del(sdata, dst); 1569 1570 mesh_path_flush_by_iface(sdata); 1571 return 0; 1572 } 1573 1574 static int ieee80211_change_mpath(struct wiphy *wiphy, 1575 struct net_device *dev, 1576 u8 *dst, u8 *next_hop) 1577 { 1578 struct ieee80211_sub_if_data *sdata; 1579 struct mesh_path *mpath; 1580 struct sta_info *sta; 1581 1582 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1583 1584 rcu_read_lock(); 1585 1586 sta = sta_info_get(sdata, next_hop); 1587 if (!sta) { 1588 rcu_read_unlock(); 1589 return -ENOENT; 1590 } 1591 1592 mpath = mesh_path_lookup(sdata, dst); 1593 if (!mpath) { 1594 rcu_read_unlock(); 1595 return -ENOENT; 1596 } 1597 1598 mesh_path_fix_nexthop(mpath, sta); 1599 1600 rcu_read_unlock(); 1601 return 0; 1602 } 1603 1604 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1605 struct mpath_info *pinfo) 1606 { 1607 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1608 1609 if (next_hop_sta) 1610 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1611 else 1612 memset(next_hop, 0, ETH_ALEN); 1613 1614 memset(pinfo, 0, sizeof(*pinfo)); 1615 1616 pinfo->generation = mesh_paths_generation; 1617 1618 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1619 MPATH_INFO_SN | 1620 MPATH_INFO_METRIC | 1621 MPATH_INFO_EXPTIME | 1622 MPATH_INFO_DISCOVERY_TIMEOUT | 1623 MPATH_INFO_DISCOVERY_RETRIES | 1624 MPATH_INFO_FLAGS; 1625 1626 pinfo->frame_qlen = mpath->frame_queue.qlen; 1627 pinfo->sn = mpath->sn; 1628 pinfo->metric = mpath->metric; 1629 if (time_before(jiffies, mpath->exp_time)) 1630 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1631 pinfo->discovery_timeout = 1632 jiffies_to_msecs(mpath->discovery_timeout); 1633 pinfo->discovery_retries = mpath->discovery_retries; 1634 if (mpath->flags & MESH_PATH_ACTIVE) 1635 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1636 if (mpath->flags & MESH_PATH_RESOLVING) 1637 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1638 if (mpath->flags & MESH_PATH_SN_VALID) 1639 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1640 if (mpath->flags & MESH_PATH_FIXED) 1641 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1642 if (mpath->flags & MESH_PATH_RESOLVED) 1643 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1644 } 1645 1646 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1647 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1648 1649 { 1650 struct ieee80211_sub_if_data *sdata; 1651 struct mesh_path *mpath; 1652 1653 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1654 1655 rcu_read_lock(); 1656 mpath = mesh_path_lookup(sdata, dst); 1657 if (!mpath) { 1658 rcu_read_unlock(); 1659 return -ENOENT; 1660 } 1661 memcpy(dst, mpath->dst, ETH_ALEN); 1662 mpath_set_pinfo(mpath, next_hop, pinfo); 1663 rcu_read_unlock(); 1664 return 0; 1665 } 1666 1667 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1668 int idx, u8 *dst, u8 *next_hop, 1669 struct mpath_info *pinfo) 1670 { 1671 struct ieee80211_sub_if_data *sdata; 1672 struct mesh_path *mpath; 1673 1674 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1675 1676 rcu_read_lock(); 1677 mpath = mesh_path_lookup_by_idx(sdata, idx); 1678 if (!mpath) { 1679 rcu_read_unlock(); 1680 return -ENOENT; 1681 } 1682 memcpy(dst, mpath->dst, ETH_ALEN); 1683 mpath_set_pinfo(mpath, next_hop, pinfo); 1684 rcu_read_unlock(); 1685 return 0; 1686 } 1687 1688 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1689 struct net_device *dev, 1690 struct mesh_config *conf) 1691 { 1692 struct ieee80211_sub_if_data *sdata; 1693 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1694 1695 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1696 return 0; 1697 } 1698 1699 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1700 { 1701 return (mask >> (parm-1)) & 0x1; 1702 } 1703 1704 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1705 const struct mesh_setup *setup) 1706 { 1707 u8 *new_ie; 1708 const u8 *old_ie; 1709 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1710 struct ieee80211_sub_if_data, u.mesh); 1711 1712 /* allocate information elements */ 1713 new_ie = NULL; 1714 old_ie = ifmsh->ie; 1715 1716 if (setup->ie_len) { 1717 new_ie = kmemdup(setup->ie, setup->ie_len, 1718 GFP_KERNEL); 1719 if (!new_ie) 1720 return -ENOMEM; 1721 } 1722 ifmsh->ie_len = setup->ie_len; 1723 ifmsh->ie = new_ie; 1724 kfree(old_ie); 1725 1726 /* now copy the rest of the setup parameters */ 1727 ifmsh->mesh_id_len = setup->mesh_id_len; 1728 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1729 ifmsh->mesh_sp_id = setup->sync_method; 1730 ifmsh->mesh_pp_id = setup->path_sel_proto; 1731 ifmsh->mesh_pm_id = setup->path_metric; 1732 ifmsh->user_mpm = setup->user_mpm; 1733 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1734 if (setup->is_authenticated) 1735 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1736 if (setup->is_secure) 1737 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1738 1739 /* mcast rate setting in Mesh Node */ 1740 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1741 sizeof(setup->mcast_rate)); 1742 1743 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1744 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1745 1746 return 0; 1747 } 1748 1749 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1750 struct net_device *dev, u32 mask, 1751 const struct mesh_config *nconf) 1752 { 1753 struct mesh_config *conf; 1754 struct ieee80211_sub_if_data *sdata; 1755 struct ieee80211_if_mesh *ifmsh; 1756 1757 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1758 ifmsh = &sdata->u.mesh; 1759 1760 /* Set the config options which we are interested in setting */ 1761 conf = &(sdata->u.mesh.mshcfg); 1762 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1763 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1764 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1765 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1766 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1767 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1768 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1769 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1770 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1771 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1772 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1773 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1774 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1775 conf->element_ttl = nconf->element_ttl; 1776 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1777 if (ifmsh->user_mpm) 1778 return -EBUSY; 1779 conf->auto_open_plinks = nconf->auto_open_plinks; 1780 } 1781 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1782 conf->dot11MeshNbrOffsetMaxNeighbor = 1783 nconf->dot11MeshNbrOffsetMaxNeighbor; 1784 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1785 conf->dot11MeshHWMPmaxPREQretries = 1786 nconf->dot11MeshHWMPmaxPREQretries; 1787 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1788 conf->path_refresh_time = nconf->path_refresh_time; 1789 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1790 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1791 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1792 conf->dot11MeshHWMPactivePathTimeout = 1793 nconf->dot11MeshHWMPactivePathTimeout; 1794 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1795 conf->dot11MeshHWMPpreqMinInterval = 1796 nconf->dot11MeshHWMPpreqMinInterval; 1797 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1798 conf->dot11MeshHWMPperrMinInterval = 1799 nconf->dot11MeshHWMPperrMinInterval; 1800 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1801 mask)) 1802 conf->dot11MeshHWMPnetDiameterTraversalTime = 1803 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1804 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1805 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1806 ieee80211_mesh_root_setup(ifmsh); 1807 } 1808 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1809 /* our current gate announcement implementation rides on root 1810 * announcements, so require this ifmsh to also be a root node 1811 * */ 1812 if (nconf->dot11MeshGateAnnouncementProtocol && 1813 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1814 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1815 ieee80211_mesh_root_setup(ifmsh); 1816 } 1817 conf->dot11MeshGateAnnouncementProtocol = 1818 nconf->dot11MeshGateAnnouncementProtocol; 1819 } 1820 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1821 conf->dot11MeshHWMPRannInterval = 1822 nconf->dot11MeshHWMPRannInterval; 1823 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1824 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1825 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1826 /* our RSSI threshold implementation is supported only for 1827 * devices that report signal in dBm. 1828 */ 1829 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1830 return -ENOTSUPP; 1831 conf->rssi_threshold = nconf->rssi_threshold; 1832 } 1833 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1834 conf->ht_opmode = nconf->ht_opmode; 1835 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1836 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1837 } 1838 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1839 conf->dot11MeshHWMPactivePathToRootTimeout = 1840 nconf->dot11MeshHWMPactivePathToRootTimeout; 1841 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1842 conf->dot11MeshHWMProotInterval = 1843 nconf->dot11MeshHWMProotInterval; 1844 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1845 conf->dot11MeshHWMPconfirmationInterval = 1846 nconf->dot11MeshHWMPconfirmationInterval; 1847 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1848 conf->power_mode = nconf->power_mode; 1849 ieee80211_mps_local_status_update(sdata); 1850 } 1851 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1852 conf->dot11MeshAwakeWindowDuration = 1853 nconf->dot11MeshAwakeWindowDuration; 1854 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1855 return 0; 1856 } 1857 1858 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1859 const struct mesh_config *conf, 1860 const struct mesh_setup *setup) 1861 { 1862 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1863 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1864 int err; 1865 1866 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1867 err = copy_mesh_setup(ifmsh, setup); 1868 if (err) 1869 return err; 1870 1871 /* can mesh use other SMPS modes? */ 1872 sdata->smps_mode = IEEE80211_SMPS_OFF; 1873 sdata->needed_rx_chains = sdata->local->rx_chains; 1874 1875 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1876 IEEE80211_CHANCTX_SHARED); 1877 if (err) 1878 return err; 1879 1880 return ieee80211_start_mesh(sdata); 1881 } 1882 1883 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1884 { 1885 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1886 1887 ieee80211_stop_mesh(sdata); 1888 ieee80211_vif_release_channel(sdata); 1889 1890 return 0; 1891 } 1892 #endif 1893 1894 static int ieee80211_change_bss(struct wiphy *wiphy, 1895 struct net_device *dev, 1896 struct bss_parameters *params) 1897 { 1898 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1899 enum ieee80211_band band; 1900 u32 changed = 0; 1901 1902 if (!rtnl_dereference(sdata->u.ap.beacon)) 1903 return -ENOENT; 1904 1905 band = ieee80211_get_sdata_band(sdata); 1906 1907 if (params->use_cts_prot >= 0) { 1908 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1909 changed |= BSS_CHANGED_ERP_CTS_PROT; 1910 } 1911 if (params->use_short_preamble >= 0) { 1912 sdata->vif.bss_conf.use_short_preamble = 1913 params->use_short_preamble; 1914 changed |= BSS_CHANGED_ERP_PREAMBLE; 1915 } 1916 1917 if (!sdata->vif.bss_conf.use_short_slot && 1918 band == IEEE80211_BAND_5GHZ) { 1919 sdata->vif.bss_conf.use_short_slot = true; 1920 changed |= BSS_CHANGED_ERP_SLOT; 1921 } 1922 1923 if (params->use_short_slot_time >= 0) { 1924 sdata->vif.bss_conf.use_short_slot = 1925 params->use_short_slot_time; 1926 changed |= BSS_CHANGED_ERP_SLOT; 1927 } 1928 1929 if (params->basic_rates) { 1930 int i, j; 1931 u32 rates = 0; 1932 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1933 1934 for (i = 0; i < params->basic_rates_len; i++) { 1935 int rate = (params->basic_rates[i] & 0x7f) * 5; 1936 for (j = 0; j < sband->n_bitrates; j++) { 1937 if (sband->bitrates[j].bitrate == rate) 1938 rates |= BIT(j); 1939 } 1940 } 1941 sdata->vif.bss_conf.basic_rates = rates; 1942 changed |= BSS_CHANGED_BASIC_RATES; 1943 } 1944 1945 if (params->ap_isolate >= 0) { 1946 if (params->ap_isolate) 1947 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1948 else 1949 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1950 } 1951 1952 if (params->ht_opmode >= 0) { 1953 sdata->vif.bss_conf.ht_operation_mode = 1954 (u16) params->ht_opmode; 1955 changed |= BSS_CHANGED_HT; 1956 } 1957 1958 if (params->p2p_ctwindow >= 0) { 1959 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow; 1960 changed |= BSS_CHANGED_P2P_PS; 1961 } 1962 1963 if (params->p2p_opp_ps >= 0) { 1964 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps; 1965 changed |= BSS_CHANGED_P2P_PS; 1966 } 1967 1968 ieee80211_bss_info_change_notify(sdata, changed); 1969 1970 return 0; 1971 } 1972 1973 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1974 struct net_device *dev, 1975 struct ieee80211_txq_params *params) 1976 { 1977 struct ieee80211_local *local = wiphy_priv(wiphy); 1978 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1979 struct ieee80211_tx_queue_params p; 1980 1981 if (!local->ops->conf_tx) 1982 return -EOPNOTSUPP; 1983 1984 if (local->hw.queues < IEEE80211_NUM_ACS) 1985 return -EOPNOTSUPP; 1986 1987 memset(&p, 0, sizeof(p)); 1988 p.aifs = params->aifs; 1989 p.cw_max = params->cwmax; 1990 p.cw_min = params->cwmin; 1991 p.txop = params->txop; 1992 1993 /* 1994 * Setting tx queue params disables u-apsd because it's only 1995 * called in master mode. 1996 */ 1997 p.uapsd = false; 1998 1999 sdata->tx_conf[params->ac] = p; 2000 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2001 wiphy_debug(local->hw.wiphy, 2002 "failed to set TX queue parameters for AC %d\n", 2003 params->ac); 2004 return -EINVAL; 2005 } 2006 2007 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2008 2009 return 0; 2010 } 2011 2012 #ifdef CONFIG_PM 2013 static int ieee80211_suspend(struct wiphy *wiphy, 2014 struct cfg80211_wowlan *wowlan) 2015 { 2016 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2017 } 2018 2019 static int ieee80211_resume(struct wiphy *wiphy) 2020 { 2021 return __ieee80211_resume(wiphy_priv(wiphy)); 2022 } 2023 #else 2024 #define ieee80211_suspend NULL 2025 #define ieee80211_resume NULL 2026 #endif 2027 2028 static int ieee80211_scan(struct wiphy *wiphy, 2029 struct cfg80211_scan_request *req) 2030 { 2031 struct ieee80211_sub_if_data *sdata; 2032 2033 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2034 2035 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2036 case NL80211_IFTYPE_STATION: 2037 case NL80211_IFTYPE_ADHOC: 2038 case NL80211_IFTYPE_MESH_POINT: 2039 case NL80211_IFTYPE_P2P_CLIENT: 2040 case NL80211_IFTYPE_P2P_DEVICE: 2041 break; 2042 case NL80211_IFTYPE_P2P_GO: 2043 if (sdata->local->ops->hw_scan) 2044 break; 2045 /* 2046 * FIXME: implement NoA while scanning in software, 2047 * for now fall through to allow scanning only when 2048 * beaconing hasn't been configured yet 2049 */ 2050 case NL80211_IFTYPE_AP: 2051 /* 2052 * If the scan has been forced (and the driver supports 2053 * forcing), don't care about being beaconing already. 2054 * This will create problems to the attached stations (e.g. all 2055 * the frames sent while scanning on other channel will be 2056 * lost) 2057 */ 2058 if (sdata->u.ap.beacon && 2059 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2060 !(req->flags & NL80211_SCAN_FLAG_AP))) 2061 return -EOPNOTSUPP; 2062 break; 2063 default: 2064 return -EOPNOTSUPP; 2065 } 2066 2067 return ieee80211_request_scan(sdata, req); 2068 } 2069 2070 static int 2071 ieee80211_sched_scan_start(struct wiphy *wiphy, 2072 struct net_device *dev, 2073 struct cfg80211_sched_scan_request *req) 2074 { 2075 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2076 2077 if (!sdata->local->ops->sched_scan_start) 2078 return -EOPNOTSUPP; 2079 2080 return ieee80211_request_sched_scan_start(sdata, req); 2081 } 2082 2083 static int 2084 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2085 { 2086 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2087 2088 if (!sdata->local->ops->sched_scan_stop) 2089 return -EOPNOTSUPP; 2090 2091 return ieee80211_request_sched_scan_stop(sdata); 2092 } 2093 2094 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2095 struct cfg80211_auth_request *req) 2096 { 2097 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2098 } 2099 2100 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2101 struct cfg80211_assoc_request *req) 2102 { 2103 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2104 } 2105 2106 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2107 struct cfg80211_deauth_request *req) 2108 { 2109 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2110 } 2111 2112 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2113 struct cfg80211_disassoc_request *req) 2114 { 2115 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2116 } 2117 2118 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2119 struct cfg80211_ibss_params *params) 2120 { 2121 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2122 } 2123 2124 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2125 { 2126 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2127 } 2128 2129 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2130 int rate[IEEE80211_NUM_BANDS]) 2131 { 2132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2133 2134 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2135 sizeof(int) * IEEE80211_NUM_BANDS); 2136 2137 return 0; 2138 } 2139 2140 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2141 { 2142 struct ieee80211_local *local = wiphy_priv(wiphy); 2143 int err; 2144 2145 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2146 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2147 2148 if (err) 2149 return err; 2150 } 2151 2152 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2153 err = drv_set_coverage_class(local, wiphy->coverage_class); 2154 2155 if (err) 2156 return err; 2157 } 2158 2159 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2160 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2161 2162 if (err) 2163 return err; 2164 } 2165 2166 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2167 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2168 return -EINVAL; 2169 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2170 } 2171 if (changed & WIPHY_PARAM_RETRY_LONG) { 2172 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2173 return -EINVAL; 2174 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2175 } 2176 if (changed & 2177 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2178 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2179 2180 return 0; 2181 } 2182 2183 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2184 struct wireless_dev *wdev, 2185 enum nl80211_tx_power_setting type, int mbm) 2186 { 2187 struct ieee80211_local *local = wiphy_priv(wiphy); 2188 struct ieee80211_sub_if_data *sdata; 2189 2190 if (wdev) { 2191 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2192 2193 switch (type) { 2194 case NL80211_TX_POWER_AUTOMATIC: 2195 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2196 break; 2197 case NL80211_TX_POWER_LIMITED: 2198 case NL80211_TX_POWER_FIXED: 2199 if (mbm < 0 || (mbm % 100)) 2200 return -EOPNOTSUPP; 2201 sdata->user_power_level = MBM_TO_DBM(mbm); 2202 break; 2203 } 2204 2205 ieee80211_recalc_txpower(sdata); 2206 2207 return 0; 2208 } 2209 2210 switch (type) { 2211 case NL80211_TX_POWER_AUTOMATIC: 2212 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2213 break; 2214 case NL80211_TX_POWER_LIMITED: 2215 case NL80211_TX_POWER_FIXED: 2216 if (mbm < 0 || (mbm % 100)) 2217 return -EOPNOTSUPP; 2218 local->user_power_level = MBM_TO_DBM(mbm); 2219 break; 2220 } 2221 2222 mutex_lock(&local->iflist_mtx); 2223 list_for_each_entry(sdata, &local->interfaces, list) 2224 sdata->user_power_level = local->user_power_level; 2225 list_for_each_entry(sdata, &local->interfaces, list) 2226 ieee80211_recalc_txpower(sdata); 2227 mutex_unlock(&local->iflist_mtx); 2228 2229 return 0; 2230 } 2231 2232 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2233 struct wireless_dev *wdev, 2234 int *dbm) 2235 { 2236 struct ieee80211_local *local = wiphy_priv(wiphy); 2237 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2238 2239 if (!local->use_chanctx) 2240 *dbm = local->hw.conf.power_level; 2241 else 2242 *dbm = sdata->vif.bss_conf.txpower; 2243 2244 return 0; 2245 } 2246 2247 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2248 const u8 *addr) 2249 { 2250 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2251 2252 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2253 2254 return 0; 2255 } 2256 2257 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2258 { 2259 struct ieee80211_local *local = wiphy_priv(wiphy); 2260 2261 drv_rfkill_poll(local); 2262 } 2263 2264 #ifdef CONFIG_NL80211_TESTMODE 2265 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2266 { 2267 struct ieee80211_local *local = wiphy_priv(wiphy); 2268 2269 if (!local->ops->testmode_cmd) 2270 return -EOPNOTSUPP; 2271 2272 return local->ops->testmode_cmd(&local->hw, data, len); 2273 } 2274 2275 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2276 struct sk_buff *skb, 2277 struct netlink_callback *cb, 2278 void *data, int len) 2279 { 2280 struct ieee80211_local *local = wiphy_priv(wiphy); 2281 2282 if (!local->ops->testmode_dump) 2283 return -EOPNOTSUPP; 2284 2285 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2286 } 2287 #endif 2288 2289 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2290 enum ieee80211_smps_mode smps_mode) 2291 { 2292 const u8 *ap; 2293 enum ieee80211_smps_mode old_req; 2294 int err; 2295 2296 lockdep_assert_held(&sdata->u.mgd.mtx); 2297 2298 old_req = sdata->u.mgd.req_smps; 2299 sdata->u.mgd.req_smps = smps_mode; 2300 2301 if (old_req == smps_mode && 2302 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2303 return 0; 2304 2305 /* 2306 * If not associated, or current association is not an HT 2307 * association, there's no need to do anything, just store 2308 * the new value until we associate. 2309 */ 2310 if (!sdata->u.mgd.associated || 2311 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2312 return 0; 2313 2314 ap = sdata->u.mgd.associated->bssid; 2315 2316 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2317 if (sdata->u.mgd.powersave) 2318 smps_mode = IEEE80211_SMPS_DYNAMIC; 2319 else 2320 smps_mode = IEEE80211_SMPS_OFF; 2321 } 2322 2323 /* send SM PS frame to AP */ 2324 err = ieee80211_send_smps_action(sdata, smps_mode, 2325 ap, ap); 2326 if (err) 2327 sdata->u.mgd.req_smps = old_req; 2328 2329 return err; 2330 } 2331 2332 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2333 bool enabled, int timeout) 2334 { 2335 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2336 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2337 2338 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2339 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2340 return -EOPNOTSUPP; 2341 2342 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2343 return -EOPNOTSUPP; 2344 2345 if (enabled == sdata->u.mgd.powersave && 2346 timeout == local->dynamic_ps_forced_timeout) 2347 return 0; 2348 2349 sdata->u.mgd.powersave = enabled; 2350 local->dynamic_ps_forced_timeout = timeout; 2351 2352 /* no change, but if automatic follow powersave */ 2353 mutex_lock(&sdata->u.mgd.mtx); 2354 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2355 mutex_unlock(&sdata->u.mgd.mtx); 2356 2357 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2358 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2359 2360 ieee80211_recalc_ps(local, -1); 2361 ieee80211_recalc_ps_vif(sdata); 2362 2363 return 0; 2364 } 2365 2366 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2367 struct net_device *dev, 2368 s32 rssi_thold, u32 rssi_hyst) 2369 { 2370 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2371 struct ieee80211_vif *vif = &sdata->vif; 2372 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2373 2374 if (rssi_thold == bss_conf->cqm_rssi_thold && 2375 rssi_hyst == bss_conf->cqm_rssi_hyst) 2376 return 0; 2377 2378 bss_conf->cqm_rssi_thold = rssi_thold; 2379 bss_conf->cqm_rssi_hyst = rssi_hyst; 2380 2381 /* tell the driver upon association, unless already associated */ 2382 if (sdata->u.mgd.associated && 2383 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2384 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2385 2386 return 0; 2387 } 2388 2389 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2390 struct net_device *dev, 2391 const u8 *addr, 2392 const struct cfg80211_bitrate_mask *mask) 2393 { 2394 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2395 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2396 int i, ret; 2397 2398 if (!ieee80211_sdata_running(sdata)) 2399 return -ENETDOWN; 2400 2401 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2402 ret = drv_set_bitrate_mask(local, sdata, mask); 2403 if (ret) 2404 return ret; 2405 } 2406 2407 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2408 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2409 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2410 sizeof(mask->control[i].mcs)); 2411 } 2412 2413 return 0; 2414 } 2415 2416 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2417 struct ieee80211_sub_if_data *sdata, 2418 struct ieee80211_channel *channel, 2419 unsigned int duration, u64 *cookie, 2420 struct sk_buff *txskb, 2421 enum ieee80211_roc_type type) 2422 { 2423 struct ieee80211_roc_work *roc, *tmp; 2424 bool queued = false; 2425 int ret; 2426 2427 lockdep_assert_held(&local->mtx); 2428 2429 if (local->use_chanctx && !local->ops->remain_on_channel) 2430 return -EOPNOTSUPP; 2431 2432 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2433 if (!roc) 2434 return -ENOMEM; 2435 2436 roc->chan = channel; 2437 roc->duration = duration; 2438 roc->req_duration = duration; 2439 roc->frame = txskb; 2440 roc->type = type; 2441 roc->mgmt_tx_cookie = (unsigned long)txskb; 2442 roc->sdata = sdata; 2443 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2444 INIT_LIST_HEAD(&roc->dependents); 2445 2446 /* if there's one pending or we're scanning, queue this one */ 2447 if (!list_empty(&local->roc_list) || 2448 local->scanning || local->radar_detect_enabled) 2449 goto out_check_combine; 2450 2451 /* if not HW assist, just queue & schedule work */ 2452 if (!local->ops->remain_on_channel) { 2453 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2454 goto out_queue; 2455 } 2456 2457 /* otherwise actually kick it off here (for error handling) */ 2458 2459 /* 2460 * If the duration is zero, then the driver 2461 * wouldn't actually do anything. Set it to 2462 * 10 for now. 2463 * 2464 * TODO: cancel the off-channel operation 2465 * when we get the SKB's TX status and 2466 * the wait time was zero before. 2467 */ 2468 if (!duration) 2469 duration = 10; 2470 2471 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2472 if (ret) { 2473 kfree(roc); 2474 return ret; 2475 } 2476 2477 roc->started = true; 2478 goto out_queue; 2479 2480 out_check_combine: 2481 list_for_each_entry(tmp, &local->roc_list, list) { 2482 if (tmp->chan != channel || tmp->sdata != sdata) 2483 continue; 2484 2485 /* 2486 * Extend this ROC if possible: 2487 * 2488 * If it hasn't started yet, just increase the duration 2489 * and add the new one to the list of dependents. 2490 * If the type of the new ROC has higher priority, modify the 2491 * type of the previous one to match that of the new one. 2492 */ 2493 if (!tmp->started) { 2494 list_add_tail(&roc->list, &tmp->dependents); 2495 tmp->duration = max(tmp->duration, roc->duration); 2496 tmp->type = max(tmp->type, roc->type); 2497 queued = true; 2498 break; 2499 } 2500 2501 /* If it has already started, it's more difficult ... */ 2502 if (local->ops->remain_on_channel) { 2503 unsigned long j = jiffies; 2504 2505 /* 2506 * In the offloaded ROC case, if it hasn't begun, add 2507 * this new one to the dependent list to be handled 2508 * when the master one begins. If it has begun, 2509 * check that there's still a minimum time left and 2510 * if so, start this one, transmitting the frame, but 2511 * add it to the list directly after this one with 2512 * a reduced time so we'll ask the driver to execute 2513 * it right after finishing the previous one, in the 2514 * hope that it'll also be executed right afterwards, 2515 * effectively extending the old one. 2516 * If there's no minimum time left, just add it to the 2517 * normal list. 2518 * TODO: the ROC type is ignored here, assuming that it 2519 * is better to immediately use the current ROC. 2520 */ 2521 if (!tmp->hw_begun) { 2522 list_add_tail(&roc->list, &tmp->dependents); 2523 queued = true; 2524 break; 2525 } 2526 2527 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2528 tmp->hw_start_time + 2529 msecs_to_jiffies(tmp->duration))) { 2530 int new_dur; 2531 2532 ieee80211_handle_roc_started(roc); 2533 2534 new_dur = roc->duration - 2535 jiffies_to_msecs(tmp->hw_start_time + 2536 msecs_to_jiffies( 2537 tmp->duration) - 2538 j); 2539 2540 if (new_dur > 0) { 2541 /* add right after tmp */ 2542 list_add(&roc->list, &tmp->list); 2543 } else { 2544 list_add_tail(&roc->list, 2545 &tmp->dependents); 2546 } 2547 queued = true; 2548 } 2549 } else if (del_timer_sync(&tmp->work.timer)) { 2550 unsigned long new_end; 2551 2552 /* 2553 * In the software ROC case, cancel the timer, if 2554 * that fails then the finish work is already 2555 * queued/pending and thus we queue the new ROC 2556 * normally, if that succeeds then we can extend 2557 * the timer duration and TX the frame (if any.) 2558 */ 2559 2560 list_add_tail(&roc->list, &tmp->dependents); 2561 queued = true; 2562 2563 new_end = jiffies + msecs_to_jiffies(roc->duration); 2564 2565 /* ok, it was started & we canceled timer */ 2566 if (time_after(new_end, tmp->work.timer.expires)) 2567 mod_timer(&tmp->work.timer, new_end); 2568 else 2569 add_timer(&tmp->work.timer); 2570 2571 ieee80211_handle_roc_started(roc); 2572 } 2573 break; 2574 } 2575 2576 out_queue: 2577 if (!queued) 2578 list_add_tail(&roc->list, &local->roc_list); 2579 2580 /* 2581 * cookie is either the roc cookie (for normal roc) 2582 * or the SKB (for mgmt TX) 2583 */ 2584 if (!txskb) { 2585 /* local->mtx protects this */ 2586 local->roc_cookie_counter++; 2587 roc->cookie = local->roc_cookie_counter; 2588 /* wow, you wrapped 64 bits ... more likely a bug */ 2589 if (WARN_ON(roc->cookie == 0)) { 2590 roc->cookie = 1; 2591 local->roc_cookie_counter++; 2592 } 2593 *cookie = roc->cookie; 2594 } else { 2595 *cookie = (unsigned long)txskb; 2596 } 2597 2598 return 0; 2599 } 2600 2601 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2602 struct wireless_dev *wdev, 2603 struct ieee80211_channel *chan, 2604 unsigned int duration, 2605 u64 *cookie) 2606 { 2607 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2608 struct ieee80211_local *local = sdata->local; 2609 int ret; 2610 2611 mutex_lock(&local->mtx); 2612 ret = ieee80211_start_roc_work(local, sdata, chan, 2613 duration, cookie, NULL, 2614 IEEE80211_ROC_TYPE_NORMAL); 2615 mutex_unlock(&local->mtx); 2616 2617 return ret; 2618 } 2619 2620 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2621 u64 cookie, bool mgmt_tx) 2622 { 2623 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2624 int ret; 2625 2626 mutex_lock(&local->mtx); 2627 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2628 struct ieee80211_roc_work *dep, *tmp2; 2629 2630 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2631 if (!mgmt_tx && dep->cookie != cookie) 2632 continue; 2633 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2634 continue; 2635 /* found dependent item -- just remove it */ 2636 list_del(&dep->list); 2637 mutex_unlock(&local->mtx); 2638 2639 ieee80211_roc_notify_destroy(dep); 2640 return 0; 2641 } 2642 2643 if (!mgmt_tx && roc->cookie != cookie) 2644 continue; 2645 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2646 continue; 2647 2648 found = roc; 2649 break; 2650 } 2651 2652 if (!found) { 2653 mutex_unlock(&local->mtx); 2654 return -ENOENT; 2655 } 2656 2657 /* 2658 * We found the item to cancel, so do that. Note that it 2659 * may have dependents, which we also cancel (and send 2660 * the expired signal for.) Not doing so would be quite 2661 * tricky here, but we may need to fix it later. 2662 */ 2663 2664 if (local->ops->remain_on_channel) { 2665 if (found->started) { 2666 ret = drv_cancel_remain_on_channel(local); 2667 if (WARN_ON_ONCE(ret)) { 2668 mutex_unlock(&local->mtx); 2669 return ret; 2670 } 2671 } 2672 2673 list_del(&found->list); 2674 2675 if (found->started) 2676 ieee80211_start_next_roc(local); 2677 mutex_unlock(&local->mtx); 2678 2679 ieee80211_roc_notify_destroy(found); 2680 } else { 2681 /* work may be pending so use it all the time */ 2682 found->abort = true; 2683 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2684 2685 mutex_unlock(&local->mtx); 2686 2687 /* work will clean up etc */ 2688 flush_delayed_work(&found->work); 2689 } 2690 2691 return 0; 2692 } 2693 2694 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2695 struct wireless_dev *wdev, 2696 u64 cookie) 2697 { 2698 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2699 struct ieee80211_local *local = sdata->local; 2700 2701 return ieee80211_cancel_roc(local, cookie, false); 2702 } 2703 2704 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2705 struct net_device *dev, 2706 struct cfg80211_chan_def *chandef) 2707 { 2708 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2709 struct ieee80211_local *local = sdata->local; 2710 unsigned long timeout; 2711 int err; 2712 2713 if (!list_empty(&local->roc_list) || local->scanning) 2714 return -EBUSY; 2715 2716 /* whatever, but channel contexts should not complain about that one */ 2717 sdata->smps_mode = IEEE80211_SMPS_OFF; 2718 sdata->needed_rx_chains = local->rx_chains; 2719 sdata->radar_required = true; 2720 2721 mutex_lock(&local->iflist_mtx); 2722 err = ieee80211_vif_use_channel(sdata, chandef, 2723 IEEE80211_CHANCTX_SHARED); 2724 mutex_unlock(&local->iflist_mtx); 2725 if (err) 2726 return err; 2727 2728 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2729 ieee80211_queue_delayed_work(&sdata->local->hw, 2730 &sdata->dfs_cac_timer_work, timeout); 2731 2732 return 0; 2733 } 2734 2735 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2736 struct ieee80211_channel *chan, bool offchan, 2737 unsigned int wait, const u8 *buf, size_t len, 2738 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2739 { 2740 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2741 struct ieee80211_local *local = sdata->local; 2742 struct sk_buff *skb; 2743 struct sta_info *sta; 2744 const struct ieee80211_mgmt *mgmt = (void *)buf; 2745 bool need_offchan = false; 2746 u32 flags; 2747 int ret; 2748 2749 if (dont_wait_for_ack) 2750 flags = IEEE80211_TX_CTL_NO_ACK; 2751 else 2752 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2753 IEEE80211_TX_CTL_REQ_TX_STATUS; 2754 2755 if (no_cck) 2756 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2757 2758 switch (sdata->vif.type) { 2759 case NL80211_IFTYPE_ADHOC: 2760 if (!sdata->vif.bss_conf.ibss_joined) 2761 need_offchan = true; 2762 /* fall through */ 2763 #ifdef CONFIG_MAC80211_MESH 2764 case NL80211_IFTYPE_MESH_POINT: 2765 if (ieee80211_vif_is_mesh(&sdata->vif) && 2766 !sdata->u.mesh.mesh_id_len) 2767 need_offchan = true; 2768 /* fall through */ 2769 #endif 2770 case NL80211_IFTYPE_AP: 2771 case NL80211_IFTYPE_AP_VLAN: 2772 case NL80211_IFTYPE_P2P_GO: 2773 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2774 !ieee80211_vif_is_mesh(&sdata->vif) && 2775 !rcu_access_pointer(sdata->bss->beacon)) 2776 need_offchan = true; 2777 if (!ieee80211_is_action(mgmt->frame_control) || 2778 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2779 break; 2780 rcu_read_lock(); 2781 sta = sta_info_get(sdata, mgmt->da); 2782 rcu_read_unlock(); 2783 if (!sta) 2784 return -ENOLINK; 2785 break; 2786 case NL80211_IFTYPE_STATION: 2787 case NL80211_IFTYPE_P2P_CLIENT: 2788 if (!sdata->u.mgd.associated) 2789 need_offchan = true; 2790 break; 2791 case NL80211_IFTYPE_P2P_DEVICE: 2792 need_offchan = true; 2793 break; 2794 default: 2795 return -EOPNOTSUPP; 2796 } 2797 2798 mutex_lock(&local->mtx); 2799 2800 /* Check if the operating channel is the requested channel */ 2801 if (!need_offchan) { 2802 struct ieee80211_chanctx_conf *chanctx_conf; 2803 2804 rcu_read_lock(); 2805 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2806 2807 if (chanctx_conf) 2808 need_offchan = chan != chanctx_conf->def.chan; 2809 else 2810 need_offchan = true; 2811 rcu_read_unlock(); 2812 } 2813 2814 if (need_offchan && !offchan) { 2815 ret = -EBUSY; 2816 goto out_unlock; 2817 } 2818 2819 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2820 if (!skb) { 2821 ret = -ENOMEM; 2822 goto out_unlock; 2823 } 2824 skb_reserve(skb, local->hw.extra_tx_headroom); 2825 2826 memcpy(skb_put(skb, len), buf, len); 2827 2828 IEEE80211_SKB_CB(skb)->flags = flags; 2829 2830 skb->dev = sdata->dev; 2831 2832 if (!need_offchan) { 2833 *cookie = (unsigned long) skb; 2834 ieee80211_tx_skb(sdata, skb); 2835 ret = 0; 2836 goto out_unlock; 2837 } 2838 2839 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 2840 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2841 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2842 IEEE80211_SKB_CB(skb)->hw_queue = 2843 local->hw.offchannel_tx_hw_queue; 2844 2845 /* This will handle all kinds of coalescing and immediate TX */ 2846 ret = ieee80211_start_roc_work(local, sdata, chan, 2847 wait, cookie, skb, 2848 IEEE80211_ROC_TYPE_MGMT_TX); 2849 if (ret) 2850 kfree_skb(skb); 2851 out_unlock: 2852 mutex_unlock(&local->mtx); 2853 return ret; 2854 } 2855 2856 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2857 struct wireless_dev *wdev, 2858 u64 cookie) 2859 { 2860 struct ieee80211_local *local = wiphy_priv(wiphy); 2861 2862 return ieee80211_cancel_roc(local, cookie, true); 2863 } 2864 2865 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2866 struct wireless_dev *wdev, 2867 u16 frame_type, bool reg) 2868 { 2869 struct ieee80211_local *local = wiphy_priv(wiphy); 2870 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2871 2872 switch (frame_type) { 2873 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: 2874 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 2875 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2876 2877 if (reg) 2878 ifibss->auth_frame_registrations++; 2879 else 2880 ifibss->auth_frame_registrations--; 2881 } 2882 break; 2883 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2884 if (reg) 2885 local->probe_req_reg++; 2886 else 2887 local->probe_req_reg--; 2888 2889 if (!local->open_count) 2890 break; 2891 2892 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2893 break; 2894 default: 2895 break; 2896 } 2897 } 2898 2899 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2900 { 2901 struct ieee80211_local *local = wiphy_priv(wiphy); 2902 2903 if (local->started) 2904 return -EOPNOTSUPP; 2905 2906 return drv_set_antenna(local, tx_ant, rx_ant); 2907 } 2908 2909 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2910 { 2911 struct ieee80211_local *local = wiphy_priv(wiphy); 2912 2913 return drv_get_antenna(local, tx_ant, rx_ant); 2914 } 2915 2916 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2917 { 2918 struct ieee80211_local *local = wiphy_priv(wiphy); 2919 2920 return drv_set_ringparam(local, tx, rx); 2921 } 2922 2923 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2924 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2925 { 2926 struct ieee80211_local *local = wiphy_priv(wiphy); 2927 2928 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2929 } 2930 2931 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2932 struct net_device *dev, 2933 struct cfg80211_gtk_rekey_data *data) 2934 { 2935 struct ieee80211_local *local = wiphy_priv(wiphy); 2936 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2937 2938 if (!local->ops->set_rekey_data) 2939 return -EOPNOTSUPP; 2940 2941 drv_set_rekey_data(local, sdata, data); 2942 2943 return 0; 2944 } 2945 2946 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2947 { 2948 u8 *pos = (void *)skb_put(skb, 7); 2949 2950 *pos++ = WLAN_EID_EXT_CAPABILITY; 2951 *pos++ = 5; /* len */ 2952 *pos++ = 0x0; 2953 *pos++ = 0x0; 2954 *pos++ = 0x0; 2955 *pos++ = 0x0; 2956 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2957 } 2958 2959 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2960 { 2961 struct ieee80211_local *local = sdata->local; 2962 u16 capab; 2963 2964 capab = 0; 2965 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 2966 return capab; 2967 2968 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2969 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2970 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2971 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2972 2973 return capab; 2974 } 2975 2976 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2977 u8 *peer, u8 *bssid) 2978 { 2979 struct ieee80211_tdls_lnkie *lnkid; 2980 2981 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2982 2983 lnkid->ie_type = WLAN_EID_LINK_ID; 2984 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2985 2986 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2987 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2988 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2989 } 2990 2991 static int 2992 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2993 u8 *peer, u8 action_code, u8 dialog_token, 2994 u16 status_code, struct sk_buff *skb) 2995 { 2996 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2997 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 2998 struct ieee80211_tdls_data *tf; 2999 3000 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3001 3002 memcpy(tf->da, peer, ETH_ALEN); 3003 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3004 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3005 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3006 3007 switch (action_code) { 3008 case WLAN_TDLS_SETUP_REQUEST: 3009 tf->category = WLAN_CATEGORY_TDLS; 3010 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3011 3012 skb_put(skb, sizeof(tf->u.setup_req)); 3013 tf->u.setup_req.dialog_token = dialog_token; 3014 tf->u.setup_req.capability = 3015 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3016 3017 ieee80211_add_srates_ie(sdata, skb, false, band); 3018 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3019 ieee80211_tdls_add_ext_capab(skb); 3020 break; 3021 case WLAN_TDLS_SETUP_RESPONSE: 3022 tf->category = WLAN_CATEGORY_TDLS; 3023 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3024 3025 skb_put(skb, sizeof(tf->u.setup_resp)); 3026 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3027 tf->u.setup_resp.dialog_token = dialog_token; 3028 tf->u.setup_resp.capability = 3029 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3030 3031 ieee80211_add_srates_ie(sdata, skb, false, band); 3032 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3033 ieee80211_tdls_add_ext_capab(skb); 3034 break; 3035 case WLAN_TDLS_SETUP_CONFIRM: 3036 tf->category = WLAN_CATEGORY_TDLS; 3037 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3038 3039 skb_put(skb, sizeof(tf->u.setup_cfm)); 3040 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3041 tf->u.setup_cfm.dialog_token = dialog_token; 3042 break; 3043 case WLAN_TDLS_TEARDOWN: 3044 tf->category = WLAN_CATEGORY_TDLS; 3045 tf->action_code = WLAN_TDLS_TEARDOWN; 3046 3047 skb_put(skb, sizeof(tf->u.teardown)); 3048 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3049 break; 3050 case WLAN_TDLS_DISCOVERY_REQUEST: 3051 tf->category = WLAN_CATEGORY_TDLS; 3052 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3053 3054 skb_put(skb, sizeof(tf->u.discover_req)); 3055 tf->u.discover_req.dialog_token = dialog_token; 3056 break; 3057 default: 3058 return -EINVAL; 3059 } 3060 3061 return 0; 3062 } 3063 3064 static int 3065 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3066 u8 *peer, u8 action_code, u8 dialog_token, 3067 u16 status_code, struct sk_buff *skb) 3068 { 3069 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3070 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3071 struct ieee80211_mgmt *mgmt; 3072 3073 mgmt = (void *)skb_put(skb, 24); 3074 memset(mgmt, 0, 24); 3075 memcpy(mgmt->da, peer, ETH_ALEN); 3076 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3077 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3078 3079 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3080 IEEE80211_STYPE_ACTION); 3081 3082 switch (action_code) { 3083 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3084 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3085 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3086 mgmt->u.action.u.tdls_discover_resp.action_code = 3087 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3088 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3089 dialog_token; 3090 mgmt->u.action.u.tdls_discover_resp.capability = 3091 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3092 3093 ieee80211_add_srates_ie(sdata, skb, false, band); 3094 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3095 ieee80211_tdls_add_ext_capab(skb); 3096 break; 3097 default: 3098 return -EINVAL; 3099 } 3100 3101 return 0; 3102 } 3103 3104 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3105 u8 *peer, u8 action_code, u8 dialog_token, 3106 u16 status_code, const u8 *extra_ies, 3107 size_t extra_ies_len) 3108 { 3109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3110 struct ieee80211_local *local = sdata->local; 3111 struct sk_buff *skb = NULL; 3112 bool send_direct; 3113 int ret; 3114 3115 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3116 return -ENOTSUPP; 3117 3118 /* make sure we are in managed mode, and associated */ 3119 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3120 !sdata->u.mgd.associated) 3121 return -EINVAL; 3122 3123 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3124 action_code, peer); 3125 3126 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3127 max(sizeof(struct ieee80211_mgmt), 3128 sizeof(struct ieee80211_tdls_data)) + 3129 50 + /* supported rates */ 3130 7 + /* ext capab */ 3131 extra_ies_len + 3132 sizeof(struct ieee80211_tdls_lnkie)); 3133 if (!skb) 3134 return -ENOMEM; 3135 3136 skb_reserve(skb, local->hw.extra_tx_headroom); 3137 3138 switch (action_code) { 3139 case WLAN_TDLS_SETUP_REQUEST: 3140 case WLAN_TDLS_SETUP_RESPONSE: 3141 case WLAN_TDLS_SETUP_CONFIRM: 3142 case WLAN_TDLS_TEARDOWN: 3143 case WLAN_TDLS_DISCOVERY_REQUEST: 3144 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3145 action_code, dialog_token, 3146 status_code, skb); 3147 send_direct = false; 3148 break; 3149 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3150 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3151 dialog_token, status_code, 3152 skb); 3153 send_direct = true; 3154 break; 3155 default: 3156 ret = -ENOTSUPP; 3157 break; 3158 } 3159 3160 if (ret < 0) 3161 goto fail; 3162 3163 if (extra_ies_len) 3164 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3165 3166 /* the TDLS link IE is always added last */ 3167 switch (action_code) { 3168 case WLAN_TDLS_SETUP_REQUEST: 3169 case WLAN_TDLS_SETUP_CONFIRM: 3170 case WLAN_TDLS_TEARDOWN: 3171 case WLAN_TDLS_DISCOVERY_REQUEST: 3172 /* we are the initiator */ 3173 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3174 sdata->u.mgd.bssid); 3175 break; 3176 case WLAN_TDLS_SETUP_RESPONSE: 3177 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3178 /* we are the responder */ 3179 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3180 sdata->u.mgd.bssid); 3181 break; 3182 default: 3183 ret = -ENOTSUPP; 3184 goto fail; 3185 } 3186 3187 if (send_direct) { 3188 ieee80211_tx_skb(sdata, skb); 3189 return 0; 3190 } 3191 3192 /* 3193 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3194 * we should default to AC_VI. 3195 */ 3196 switch (action_code) { 3197 case WLAN_TDLS_SETUP_REQUEST: 3198 case WLAN_TDLS_SETUP_RESPONSE: 3199 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3200 skb->priority = 2; 3201 break; 3202 default: 3203 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3204 skb->priority = 5; 3205 break; 3206 } 3207 3208 /* disable bottom halves when entering the Tx path */ 3209 local_bh_disable(); 3210 ret = ieee80211_subif_start_xmit(skb, dev); 3211 local_bh_enable(); 3212 3213 return ret; 3214 3215 fail: 3216 dev_kfree_skb(skb); 3217 return ret; 3218 } 3219 3220 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3221 u8 *peer, enum nl80211_tdls_operation oper) 3222 { 3223 struct sta_info *sta; 3224 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3225 3226 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3227 return -ENOTSUPP; 3228 3229 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3230 return -EINVAL; 3231 3232 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3233 3234 switch (oper) { 3235 case NL80211_TDLS_ENABLE_LINK: 3236 rcu_read_lock(); 3237 sta = sta_info_get(sdata, peer); 3238 if (!sta) { 3239 rcu_read_unlock(); 3240 return -ENOLINK; 3241 } 3242 3243 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3244 rcu_read_unlock(); 3245 break; 3246 case NL80211_TDLS_DISABLE_LINK: 3247 return sta_info_destroy_addr(sdata, peer); 3248 case NL80211_TDLS_TEARDOWN: 3249 case NL80211_TDLS_SETUP: 3250 case NL80211_TDLS_DISCOVERY_REQ: 3251 /* We don't support in-driver setup/teardown/discovery */ 3252 return -ENOTSUPP; 3253 default: 3254 return -ENOTSUPP; 3255 } 3256 3257 return 0; 3258 } 3259 3260 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3261 const u8 *peer, u64 *cookie) 3262 { 3263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3264 struct ieee80211_local *local = sdata->local; 3265 struct ieee80211_qos_hdr *nullfunc; 3266 struct sk_buff *skb; 3267 int size = sizeof(*nullfunc); 3268 __le16 fc; 3269 bool qos; 3270 struct ieee80211_tx_info *info; 3271 struct sta_info *sta; 3272 struct ieee80211_chanctx_conf *chanctx_conf; 3273 enum ieee80211_band band; 3274 3275 rcu_read_lock(); 3276 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3277 if (WARN_ON(!chanctx_conf)) { 3278 rcu_read_unlock(); 3279 return -EINVAL; 3280 } 3281 band = chanctx_conf->def.chan->band; 3282 sta = sta_info_get(sdata, peer); 3283 if (sta) { 3284 qos = test_sta_flag(sta, WLAN_STA_WME); 3285 } else { 3286 rcu_read_unlock(); 3287 return -ENOLINK; 3288 } 3289 3290 if (qos) { 3291 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3292 IEEE80211_STYPE_QOS_NULLFUNC | 3293 IEEE80211_FCTL_FROMDS); 3294 } else { 3295 size -= 2; 3296 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3297 IEEE80211_STYPE_NULLFUNC | 3298 IEEE80211_FCTL_FROMDS); 3299 } 3300 3301 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3302 if (!skb) { 3303 rcu_read_unlock(); 3304 return -ENOMEM; 3305 } 3306 3307 skb->dev = dev; 3308 3309 skb_reserve(skb, local->hw.extra_tx_headroom); 3310 3311 nullfunc = (void *) skb_put(skb, size); 3312 nullfunc->frame_control = fc; 3313 nullfunc->duration_id = 0; 3314 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3315 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3316 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3317 nullfunc->seq_ctrl = 0; 3318 3319 info = IEEE80211_SKB_CB(skb); 3320 3321 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3322 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3323 3324 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3325 skb->priority = 7; 3326 if (qos) 3327 nullfunc->qos_ctrl = cpu_to_le16(7); 3328 3329 local_bh_disable(); 3330 ieee80211_xmit(sdata, skb, band); 3331 local_bh_enable(); 3332 rcu_read_unlock(); 3333 3334 *cookie = (unsigned long) skb; 3335 return 0; 3336 } 3337 3338 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3339 struct wireless_dev *wdev, 3340 struct cfg80211_chan_def *chandef) 3341 { 3342 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3343 struct ieee80211_local *local = wiphy_priv(wiphy); 3344 struct ieee80211_chanctx_conf *chanctx_conf; 3345 int ret = -ENODATA; 3346 3347 rcu_read_lock(); 3348 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3349 if (chanctx_conf) { 3350 *chandef = chanctx_conf->def; 3351 ret = 0; 3352 } else if (local->open_count > 0 && 3353 local->open_count == local->monitors && 3354 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3355 if (local->use_chanctx) 3356 *chandef = local->monitor_chandef; 3357 else 3358 cfg80211_chandef_create(chandef, 3359 local->_oper_channel, 3360 local->_oper_channel_type); 3361 ret = 0; 3362 } 3363 rcu_read_unlock(); 3364 3365 return ret; 3366 } 3367 3368 #ifdef CONFIG_PM 3369 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3370 { 3371 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3372 } 3373 #endif 3374 3375 struct cfg80211_ops mac80211_config_ops = { 3376 .add_virtual_intf = ieee80211_add_iface, 3377 .del_virtual_intf = ieee80211_del_iface, 3378 .change_virtual_intf = ieee80211_change_iface, 3379 .start_p2p_device = ieee80211_start_p2p_device, 3380 .stop_p2p_device = ieee80211_stop_p2p_device, 3381 .add_key = ieee80211_add_key, 3382 .del_key = ieee80211_del_key, 3383 .get_key = ieee80211_get_key, 3384 .set_default_key = ieee80211_config_default_key, 3385 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3386 .start_ap = ieee80211_start_ap, 3387 .change_beacon = ieee80211_change_beacon, 3388 .stop_ap = ieee80211_stop_ap, 3389 .add_station = ieee80211_add_station, 3390 .del_station = ieee80211_del_station, 3391 .change_station = ieee80211_change_station, 3392 .get_station = ieee80211_get_station, 3393 .dump_station = ieee80211_dump_station, 3394 .dump_survey = ieee80211_dump_survey, 3395 #ifdef CONFIG_MAC80211_MESH 3396 .add_mpath = ieee80211_add_mpath, 3397 .del_mpath = ieee80211_del_mpath, 3398 .change_mpath = ieee80211_change_mpath, 3399 .get_mpath = ieee80211_get_mpath, 3400 .dump_mpath = ieee80211_dump_mpath, 3401 .update_mesh_config = ieee80211_update_mesh_config, 3402 .get_mesh_config = ieee80211_get_mesh_config, 3403 .join_mesh = ieee80211_join_mesh, 3404 .leave_mesh = ieee80211_leave_mesh, 3405 #endif 3406 .change_bss = ieee80211_change_bss, 3407 .set_txq_params = ieee80211_set_txq_params, 3408 .set_monitor_channel = ieee80211_set_monitor_channel, 3409 .suspend = ieee80211_suspend, 3410 .resume = ieee80211_resume, 3411 .scan = ieee80211_scan, 3412 .sched_scan_start = ieee80211_sched_scan_start, 3413 .sched_scan_stop = ieee80211_sched_scan_stop, 3414 .auth = ieee80211_auth, 3415 .assoc = ieee80211_assoc, 3416 .deauth = ieee80211_deauth, 3417 .disassoc = ieee80211_disassoc, 3418 .join_ibss = ieee80211_join_ibss, 3419 .leave_ibss = ieee80211_leave_ibss, 3420 .set_mcast_rate = ieee80211_set_mcast_rate, 3421 .set_wiphy_params = ieee80211_set_wiphy_params, 3422 .set_tx_power = ieee80211_set_tx_power, 3423 .get_tx_power = ieee80211_get_tx_power, 3424 .set_wds_peer = ieee80211_set_wds_peer, 3425 .rfkill_poll = ieee80211_rfkill_poll, 3426 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3427 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3428 .set_power_mgmt = ieee80211_set_power_mgmt, 3429 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3430 .remain_on_channel = ieee80211_remain_on_channel, 3431 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3432 .mgmt_tx = ieee80211_mgmt_tx, 3433 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3434 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3435 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3436 .set_antenna = ieee80211_set_antenna, 3437 .get_antenna = ieee80211_get_antenna, 3438 .set_ringparam = ieee80211_set_ringparam, 3439 .get_ringparam = ieee80211_get_ringparam, 3440 .set_rekey_data = ieee80211_set_rekey_data, 3441 .tdls_oper = ieee80211_tdls_oper, 3442 .tdls_mgmt = ieee80211_tdls_mgmt, 3443 .probe_client = ieee80211_probe_client, 3444 .set_noack_map = ieee80211_set_noack_map, 3445 #ifdef CONFIG_PM 3446 .set_wakeup = ieee80211_set_wakeup, 3447 #endif 3448 .get_et_sset_count = ieee80211_get_et_sset_count, 3449 .get_et_stats = ieee80211_get_et_stats, 3450 .get_et_strings = ieee80211_get_et_strings, 3451 .get_channel = ieee80211_cfg_get_channel, 3452 .start_radar_detection = ieee80211_start_radar_detection, 3453 }; 3454