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_unused(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); 217 218 out_unlock: 219 mutex_unlock(&sdata->local->sta_mtx); 220 221 return err; 222 } 223 224 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 225 u8 key_idx, bool pairwise, const u8 *mac_addr) 226 { 227 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 228 struct ieee80211_local *local = sdata->local; 229 struct sta_info *sta; 230 struct ieee80211_key *key = NULL; 231 int ret; 232 233 mutex_lock(&local->sta_mtx); 234 mutex_lock(&local->key_mtx); 235 236 if (mac_addr) { 237 ret = -ENOENT; 238 239 sta = sta_info_get_bss(sdata, mac_addr); 240 if (!sta) 241 goto out_unlock; 242 243 if (pairwise) 244 key = key_mtx_dereference(local, sta->ptk); 245 else 246 key = key_mtx_dereference(local, sta->gtk[key_idx]); 247 } else 248 key = key_mtx_dereference(local, sdata->keys[key_idx]); 249 250 if (!key) { 251 ret = -ENOENT; 252 goto out_unlock; 253 } 254 255 ieee80211_key_free(key, true); 256 257 ret = 0; 258 out_unlock: 259 mutex_unlock(&local->key_mtx); 260 mutex_unlock(&local->sta_mtx); 261 262 return ret; 263 } 264 265 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 266 u8 key_idx, bool pairwise, const u8 *mac_addr, 267 void *cookie, 268 void (*callback)(void *cookie, 269 struct key_params *params)) 270 { 271 struct ieee80211_sub_if_data *sdata; 272 struct sta_info *sta = NULL; 273 u8 seq[6] = {0}; 274 struct key_params params; 275 struct ieee80211_key *key = NULL; 276 u64 pn64; 277 u32 iv32; 278 u16 iv16; 279 int err = -ENOENT; 280 281 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 282 283 rcu_read_lock(); 284 285 if (mac_addr) { 286 sta = sta_info_get_bss(sdata, mac_addr); 287 if (!sta) 288 goto out; 289 290 if (pairwise) 291 key = rcu_dereference(sta->ptk); 292 else if (key_idx < NUM_DEFAULT_KEYS) 293 key = rcu_dereference(sta->gtk[key_idx]); 294 } else 295 key = rcu_dereference(sdata->keys[key_idx]); 296 297 if (!key) 298 goto out; 299 300 memset(¶ms, 0, sizeof(params)); 301 302 params.cipher = key->conf.cipher; 303 304 switch (key->conf.cipher) { 305 case WLAN_CIPHER_SUITE_TKIP: 306 iv32 = key->u.tkip.tx.iv32; 307 iv16 = key->u.tkip.tx.iv16; 308 309 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 310 drv_get_tkip_seq(sdata->local, 311 key->conf.hw_key_idx, 312 &iv32, &iv16); 313 314 seq[0] = iv16 & 0xff; 315 seq[1] = (iv16 >> 8) & 0xff; 316 seq[2] = iv32 & 0xff; 317 seq[3] = (iv32 >> 8) & 0xff; 318 seq[4] = (iv32 >> 16) & 0xff; 319 seq[5] = (iv32 >> 24) & 0xff; 320 params.seq = seq; 321 params.seq_len = 6; 322 break; 323 case WLAN_CIPHER_SUITE_CCMP: 324 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 325 seq[0] = pn64; 326 seq[1] = pn64 >> 8; 327 seq[2] = pn64 >> 16; 328 seq[3] = pn64 >> 24; 329 seq[4] = pn64 >> 32; 330 seq[5] = pn64 >> 40; 331 params.seq = seq; 332 params.seq_len = 6; 333 break; 334 case WLAN_CIPHER_SUITE_AES_CMAC: 335 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 336 seq[0] = pn64; 337 seq[1] = pn64 >> 8; 338 seq[2] = pn64 >> 16; 339 seq[3] = pn64 >> 24; 340 seq[4] = pn64 >> 32; 341 seq[5] = pn64 >> 40; 342 params.seq = seq; 343 params.seq_len = 6; 344 break; 345 } 346 347 params.key = key->conf.key; 348 params.key_len = key->conf.keylen; 349 350 callback(cookie, ¶ms); 351 err = 0; 352 353 out: 354 rcu_read_unlock(); 355 return err; 356 } 357 358 static int ieee80211_config_default_key(struct wiphy *wiphy, 359 struct net_device *dev, 360 u8 key_idx, bool uni, 361 bool multi) 362 { 363 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 364 365 ieee80211_set_default_key(sdata, key_idx, uni, multi); 366 367 return 0; 368 } 369 370 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 371 struct net_device *dev, 372 u8 key_idx) 373 { 374 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 375 376 ieee80211_set_default_mgmt_key(sdata, key_idx); 377 378 return 0; 379 } 380 381 void sta_set_rate_info_tx(struct sta_info *sta, 382 const struct ieee80211_tx_rate *rate, 383 struct rate_info *rinfo) 384 { 385 rinfo->flags = 0; 386 if (rate->flags & IEEE80211_TX_RC_MCS) { 387 rinfo->flags |= RATE_INFO_FLAGS_MCS; 388 rinfo->mcs = rate->idx; 389 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 390 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 391 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 392 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 393 } else { 394 struct ieee80211_supported_band *sband; 395 sband = sta->local->hw.wiphy->bands[ 396 ieee80211_get_sdata_band(sta->sdata)]; 397 rinfo->legacy = sband->bitrates[rate->idx].bitrate; 398 } 399 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 400 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 401 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 402 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 403 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 404 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 405 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 406 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 407 } 408 409 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 410 { 411 rinfo->flags = 0; 412 413 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 414 rinfo->flags |= RATE_INFO_FLAGS_MCS; 415 rinfo->mcs = sta->last_rx_rate_idx; 416 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 417 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 418 rinfo->nss = sta->last_rx_rate_vht_nss; 419 rinfo->mcs = sta->last_rx_rate_idx; 420 } else { 421 struct ieee80211_supported_band *sband; 422 423 sband = sta->local->hw.wiphy->bands[ 424 ieee80211_get_sdata_band(sta->sdata)]; 425 rinfo->legacy = 426 sband->bitrates[sta->last_rx_rate_idx].bitrate; 427 } 428 429 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 430 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 431 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 432 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 433 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ) 434 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH; 435 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ) 436 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH; 437 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ) 438 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH; 439 } 440 441 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 442 { 443 struct ieee80211_sub_if_data *sdata = sta->sdata; 444 struct ieee80211_local *local = sdata->local; 445 struct timespec uptime; 446 u64 packets = 0; 447 int ac; 448 449 sinfo->generation = sdata->local->sta_generation; 450 451 sinfo->filled = STATION_INFO_INACTIVE_TIME | 452 STATION_INFO_RX_BYTES64 | 453 STATION_INFO_TX_BYTES64 | 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->tx_bytes = 0; 471 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 472 sinfo->tx_bytes += sta->tx_bytes[ac]; 473 packets += sta->tx_packets[ac]; 474 } 475 sinfo->tx_packets = packets; 476 sinfo->rx_bytes = sta->rx_bytes; 477 sinfo->rx_packets = sta->rx_packets; 478 sinfo->tx_retries = sta->tx_retry_count; 479 sinfo->tx_failed = sta->tx_retry_failed; 480 sinfo->rx_dropped_misc = sta->rx_dropped; 481 sinfo->beacon_loss_count = sta->beacon_loss_count; 482 483 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 484 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 485 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 486 if (!local->ops->get_rssi || 487 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal)) 488 sinfo->signal = (s8)sta->last_signal; 489 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 490 } 491 492 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); 493 sta_set_rate_info_rx(sta, &sinfo->rxrate); 494 495 if (ieee80211_vif_is_mesh(&sdata->vif)) { 496 #ifdef CONFIG_MAC80211_MESH 497 sinfo->filled |= STATION_INFO_LLID | 498 STATION_INFO_PLID | 499 STATION_INFO_PLINK_STATE | 500 STATION_INFO_LOCAL_PM | 501 STATION_INFO_PEER_PM | 502 STATION_INFO_NONPEER_PM; 503 504 sinfo->llid = le16_to_cpu(sta->llid); 505 sinfo->plid = le16_to_cpu(sta->plid); 506 sinfo->plink_state = sta->plink_state; 507 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { 508 sinfo->filled |= STATION_INFO_T_OFFSET; 509 sinfo->t_offset = sta->t_offset; 510 } 511 sinfo->local_pm = sta->local_pm; 512 sinfo->peer_pm = sta->peer_pm; 513 sinfo->nonpeer_pm = sta->nonpeer_pm; 514 #endif 515 } 516 517 sinfo->bss_param.flags = 0; 518 if (sdata->vif.bss_conf.use_cts_prot) 519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 520 if (sdata->vif.bss_conf.use_short_preamble) 521 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 522 if (sdata->vif.bss_conf.use_short_slot) 523 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 524 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 525 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 526 527 sinfo->sta_flags.set = 0; 528 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 529 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 530 BIT(NL80211_STA_FLAG_WME) | 531 BIT(NL80211_STA_FLAG_MFP) | 532 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 533 BIT(NL80211_STA_FLAG_ASSOCIATED) | 534 BIT(NL80211_STA_FLAG_TDLS_PEER); 535 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 537 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 539 if (test_sta_flag(sta, WLAN_STA_WME)) 540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 541 if (test_sta_flag(sta, WLAN_STA_MFP)) 542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 543 if (test_sta_flag(sta, WLAN_STA_AUTH)) 544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 545 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 546 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 547 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 548 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 549 } 550 551 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 552 "rx_packets", "rx_bytes", "wep_weak_iv_count", 553 "rx_duplicates", "rx_fragments", "rx_dropped", 554 "tx_packets", "tx_bytes", "tx_fragments", 555 "tx_filtered", "tx_retry_failed", "tx_retries", 556 "beacon_loss", "sta_state", "txrate", "rxrate", "signal", 557 "channel", "noise", "ch_time", "ch_time_busy", 558 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 559 }; 560 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 561 562 static int ieee80211_get_et_sset_count(struct wiphy *wiphy, 563 struct net_device *dev, 564 int sset) 565 { 566 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 567 int rv = 0; 568 569 if (sset == ETH_SS_STATS) 570 rv += STA_STATS_LEN; 571 572 rv += drv_get_et_sset_count(sdata, sset); 573 574 if (rv == 0) 575 return -EOPNOTSUPP; 576 return rv; 577 } 578 579 static void ieee80211_get_et_stats(struct wiphy *wiphy, 580 struct net_device *dev, 581 struct ethtool_stats *stats, 582 u64 *data) 583 { 584 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 585 struct ieee80211_chanctx_conf *chanctx_conf; 586 struct ieee80211_channel *channel; 587 struct sta_info *sta; 588 struct ieee80211_local *local = sdata->local; 589 struct station_info sinfo; 590 struct survey_info survey; 591 int i, q; 592 #define STA_STATS_SURVEY_LEN 7 593 594 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 595 596 #define ADD_STA_STATS(sta) \ 597 do { \ 598 data[i++] += sta->rx_packets; \ 599 data[i++] += sta->rx_bytes; \ 600 data[i++] += sta->wep_weak_iv_count; \ 601 data[i++] += sta->num_duplicates; \ 602 data[i++] += sta->rx_fragments; \ 603 data[i++] += sta->rx_dropped; \ 604 \ 605 data[i++] += sinfo.tx_packets; \ 606 data[i++] += sinfo.tx_bytes; \ 607 data[i++] += sta->tx_fragments; \ 608 data[i++] += sta->tx_filtered_count; \ 609 data[i++] += sta->tx_retry_failed; \ 610 data[i++] += sta->tx_retry_count; \ 611 data[i++] += sta->beacon_loss_count; \ 612 } while (0) 613 614 /* For Managed stations, find the single station based on BSSID 615 * and use that. For interface types, iterate through all available 616 * stations and add stats for any station that is assigned to this 617 * network device. 618 */ 619 620 mutex_lock(&local->sta_mtx); 621 622 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 623 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 624 625 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 626 goto do_survey; 627 628 sinfo.filled = 0; 629 sta_set_sinfo(sta, &sinfo); 630 631 i = 0; 632 ADD_STA_STATS(sta); 633 634 data[i++] = sta->sta_state; 635 636 637 if (sinfo.filled & STATION_INFO_TX_BITRATE) 638 data[i] = 100000 * 639 cfg80211_calculate_bitrate(&sinfo.txrate); 640 i++; 641 if (sinfo.filled & STATION_INFO_RX_BITRATE) 642 data[i] = 100000 * 643 cfg80211_calculate_bitrate(&sinfo.rxrate); 644 i++; 645 646 if (sinfo.filled & STATION_INFO_SIGNAL_AVG) 647 data[i] = (u8)sinfo.signal_avg; 648 i++; 649 } else { 650 list_for_each_entry(sta, &local->sta_list, list) { 651 /* Make sure this station belongs to the proper dev */ 652 if (sta->sdata->dev != dev) 653 continue; 654 655 i = 0; 656 ADD_STA_STATS(sta); 657 } 658 } 659 660 do_survey: 661 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 662 /* Get survey stats for current channel */ 663 survey.filled = 0; 664 665 rcu_read_lock(); 666 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 667 if (chanctx_conf) 668 channel = chanctx_conf->def.chan; 669 else 670 channel = NULL; 671 rcu_read_unlock(); 672 673 if (channel) { 674 q = 0; 675 do { 676 survey.filled = 0; 677 if (drv_get_survey(local, q, &survey) != 0) { 678 survey.filled = 0; 679 break; 680 } 681 q++; 682 } while (channel != survey.channel); 683 } 684 685 if (survey.filled) 686 data[i++] = survey.channel->center_freq; 687 else 688 data[i++] = 0; 689 if (survey.filled & SURVEY_INFO_NOISE_DBM) 690 data[i++] = (u8)survey.noise; 691 else 692 data[i++] = -1LL; 693 if (survey.filled & SURVEY_INFO_CHANNEL_TIME) 694 data[i++] = survey.channel_time; 695 else 696 data[i++] = -1LL; 697 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY) 698 data[i++] = survey.channel_time_busy; 699 else 700 data[i++] = -1LL; 701 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) 702 data[i++] = survey.channel_time_ext_busy; 703 else 704 data[i++] = -1LL; 705 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX) 706 data[i++] = survey.channel_time_rx; 707 else 708 data[i++] = -1LL; 709 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX) 710 data[i++] = survey.channel_time_tx; 711 else 712 data[i++] = -1LL; 713 714 mutex_unlock(&local->sta_mtx); 715 716 if (WARN_ON(i != STA_STATS_LEN)) 717 return; 718 719 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 720 } 721 722 static void ieee80211_get_et_strings(struct wiphy *wiphy, 723 struct net_device *dev, 724 u32 sset, u8 *data) 725 { 726 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 727 int sz_sta_stats = 0; 728 729 if (sset == ETH_SS_STATS) { 730 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 731 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats); 732 } 733 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 734 } 735 736 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 737 int idx, u8 *mac, struct station_info *sinfo) 738 { 739 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 740 struct ieee80211_local *local = sdata->local; 741 struct sta_info *sta; 742 int ret = -ENOENT; 743 744 mutex_lock(&local->sta_mtx); 745 746 sta = sta_info_get_by_idx(sdata, idx); 747 if (sta) { 748 ret = 0; 749 memcpy(mac, sta->sta.addr, ETH_ALEN); 750 sta_set_sinfo(sta, sinfo); 751 } 752 753 mutex_unlock(&local->sta_mtx); 754 755 return ret; 756 } 757 758 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 759 int idx, struct survey_info *survey) 760 { 761 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 762 763 return drv_get_survey(local, idx, survey); 764 } 765 766 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 767 u8 *mac, struct station_info *sinfo) 768 { 769 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 770 struct ieee80211_local *local = sdata->local; 771 struct sta_info *sta; 772 int ret = -ENOENT; 773 774 mutex_lock(&local->sta_mtx); 775 776 sta = sta_info_get_bss(sdata, mac); 777 if (sta) { 778 ret = 0; 779 sta_set_sinfo(sta, sinfo); 780 } 781 782 mutex_unlock(&local->sta_mtx); 783 784 return ret; 785 } 786 787 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 788 struct cfg80211_chan_def *chandef) 789 { 790 struct ieee80211_local *local = wiphy_priv(wiphy); 791 struct ieee80211_sub_if_data *sdata; 792 int ret = 0; 793 794 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 795 return 0; 796 797 mutex_lock(&local->iflist_mtx); 798 if (local->use_chanctx) { 799 sdata = rcu_dereference_protected( 800 local->monitor_sdata, 801 lockdep_is_held(&local->iflist_mtx)); 802 if (sdata) { 803 ieee80211_vif_release_channel(sdata); 804 ret = ieee80211_vif_use_channel(sdata, chandef, 805 IEEE80211_CHANCTX_EXCLUSIVE); 806 } 807 } else if (local->open_count == local->monitors) { 808 local->_oper_chandef = *chandef; 809 ieee80211_hw_config(local, 0); 810 } 811 812 if (ret == 0) 813 local->monitor_chandef = *chandef; 814 mutex_unlock(&local->iflist_mtx); 815 816 return ret; 817 } 818 819 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 820 const u8 *resp, size_t resp_len) 821 { 822 struct probe_resp *new, *old; 823 824 if (!resp || !resp_len) 825 return 1; 826 827 old = rtnl_dereference(sdata->u.ap.probe_resp); 828 829 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 830 if (!new) 831 return -ENOMEM; 832 833 new->len = resp_len; 834 memcpy(new->data, resp, resp_len); 835 836 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 837 if (old) 838 kfree_rcu(old, rcu_head); 839 840 return 0; 841 } 842 843 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 844 struct cfg80211_beacon_data *params) 845 { 846 struct beacon_data *new, *old; 847 int new_head_len, new_tail_len; 848 int size, err; 849 u32 changed = BSS_CHANGED_BEACON; 850 851 old = rtnl_dereference(sdata->u.ap.beacon); 852 853 /* Need to have a beacon head if we don't have one yet */ 854 if (!params->head && !old) 855 return -EINVAL; 856 857 /* new or old head? */ 858 if (params->head) 859 new_head_len = params->head_len; 860 else 861 new_head_len = old->head_len; 862 863 /* new or old tail? */ 864 if (params->tail || !old) 865 /* params->tail_len will be zero for !params->tail */ 866 new_tail_len = params->tail_len; 867 else 868 new_tail_len = old->tail_len; 869 870 size = sizeof(*new) + new_head_len + new_tail_len; 871 872 new = kzalloc(size, GFP_KERNEL); 873 if (!new) 874 return -ENOMEM; 875 876 /* start filling the new info now */ 877 878 /* 879 * pointers go into the block we allocated, 880 * memory is | beacon_data | head | tail | 881 */ 882 new->head = ((u8 *) new) + sizeof(*new); 883 new->tail = new->head + new_head_len; 884 new->head_len = new_head_len; 885 new->tail_len = new_tail_len; 886 887 /* copy in head */ 888 if (params->head) 889 memcpy(new->head, params->head, new_head_len); 890 else 891 memcpy(new->head, old->head, new_head_len); 892 893 /* copy in optional tail */ 894 if (params->tail) 895 memcpy(new->tail, params->tail, new_tail_len); 896 else 897 if (old) 898 memcpy(new->tail, old->tail, new_tail_len); 899 900 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 901 params->probe_resp_len); 902 if (err < 0) 903 return err; 904 if (err == 0) 905 changed |= BSS_CHANGED_AP_PROBE_RESP; 906 907 rcu_assign_pointer(sdata->u.ap.beacon, new); 908 909 if (old) 910 kfree_rcu(old, rcu_head); 911 912 return changed; 913 } 914 915 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 916 struct cfg80211_ap_settings *params) 917 { 918 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 919 struct beacon_data *old; 920 struct ieee80211_sub_if_data *vlan; 921 u32 changed = BSS_CHANGED_BEACON_INT | 922 BSS_CHANGED_BEACON_ENABLED | 923 BSS_CHANGED_BEACON | 924 BSS_CHANGED_SSID | 925 BSS_CHANGED_P2P_PS; 926 int err; 927 928 old = rtnl_dereference(sdata->u.ap.beacon); 929 if (old) 930 return -EALREADY; 931 932 /* TODO: make hostapd tell us what it wants */ 933 sdata->smps_mode = IEEE80211_SMPS_OFF; 934 sdata->needed_rx_chains = sdata->local->rx_chains; 935 sdata->radar_required = params->radar_required; 936 937 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 938 IEEE80211_CHANCTX_SHARED); 939 if (err) 940 return err; 941 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 942 943 /* 944 * Apply control port protocol, this allows us to 945 * not encrypt dynamic WEP control frames. 946 */ 947 sdata->control_port_protocol = params->crypto.control_port_ethertype; 948 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 949 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 950 vlan->control_port_protocol = 951 params->crypto.control_port_ethertype; 952 vlan->control_port_no_encrypt = 953 params->crypto.control_port_no_encrypt; 954 } 955 956 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 957 sdata->vif.bss_conf.dtim_period = params->dtim_period; 958 sdata->vif.bss_conf.enable_beacon = true; 959 960 sdata->vif.bss_conf.ssid_len = params->ssid_len; 961 if (params->ssid_len) 962 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 963 params->ssid_len); 964 sdata->vif.bss_conf.hidden_ssid = 965 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 966 967 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 968 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 969 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 970 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 971 if (params->p2p_opp_ps) 972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 973 IEEE80211_P2P_OPPPS_ENABLE_BIT; 974 975 err = ieee80211_assign_beacon(sdata, ¶ms->beacon); 976 if (err < 0) 977 return err; 978 changed |= err; 979 980 err = drv_start_ap(sdata->local, sdata); 981 if (err) { 982 old = rtnl_dereference(sdata->u.ap.beacon); 983 if (old) 984 kfree_rcu(old, rcu_head); 985 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 986 return err; 987 } 988 989 ieee80211_bss_info_change_notify(sdata, changed); 990 991 netif_carrier_on(dev); 992 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 993 netif_carrier_on(vlan->dev); 994 995 return 0; 996 } 997 998 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 999 struct cfg80211_beacon_data *params) 1000 { 1001 struct ieee80211_sub_if_data *sdata; 1002 struct beacon_data *old; 1003 int err; 1004 1005 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1006 1007 old = rtnl_dereference(sdata->u.ap.beacon); 1008 if (!old) 1009 return -ENOENT; 1010 1011 err = ieee80211_assign_beacon(sdata, params); 1012 if (err < 0) 1013 return err; 1014 ieee80211_bss_info_change_notify(sdata, err); 1015 return 0; 1016 } 1017 1018 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1019 { 1020 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1021 struct ieee80211_sub_if_data *vlan; 1022 struct ieee80211_local *local = sdata->local; 1023 struct beacon_data *old_beacon; 1024 struct probe_resp *old_probe_resp; 1025 1026 old_beacon = rtnl_dereference(sdata->u.ap.beacon); 1027 if (!old_beacon) 1028 return -ENOENT; 1029 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); 1030 1031 /* turn off carrier for this interface and dependent VLANs */ 1032 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1033 netif_carrier_off(vlan->dev); 1034 netif_carrier_off(dev); 1035 1036 /* remove beacon and probe response */ 1037 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1038 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1039 kfree_rcu(old_beacon, rcu_head); 1040 if (old_probe_resp) 1041 kfree_rcu(old_probe_resp, rcu_head); 1042 1043 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1044 sta_info_flush_defer(vlan); 1045 sta_info_flush_defer(sdata); 1046 synchronize_net(); 1047 rcu_barrier(); 1048 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1049 sta_info_flush_cleanup(vlan); 1050 ieee80211_free_keys(vlan); 1051 } 1052 sta_info_flush_cleanup(sdata); 1053 ieee80211_free_keys(sdata); 1054 1055 sdata->vif.bss_conf.enable_beacon = false; 1056 sdata->vif.bss_conf.ssid_len = 0; 1057 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1058 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1059 1060 drv_stop_ap(sdata->local, sdata); 1061 1062 /* free all potentially still buffered bcast frames */ 1063 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1064 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 1065 1066 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1067 ieee80211_vif_release_channel(sdata); 1068 1069 return 0; 1070 } 1071 1072 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 1073 struct iapp_layer2_update { 1074 u8 da[ETH_ALEN]; /* broadcast */ 1075 u8 sa[ETH_ALEN]; /* STA addr */ 1076 __be16 len; /* 6 */ 1077 u8 dsap; /* 0 */ 1078 u8 ssap; /* 0 */ 1079 u8 control; 1080 u8 xid_info[3]; 1081 } __packed; 1082 1083 static void ieee80211_send_layer2_update(struct sta_info *sta) 1084 { 1085 struct iapp_layer2_update *msg; 1086 struct sk_buff *skb; 1087 1088 /* Send Level 2 Update Frame to update forwarding tables in layer 2 1089 * bridge devices */ 1090 1091 skb = dev_alloc_skb(sizeof(*msg)); 1092 if (!skb) 1093 return; 1094 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 1095 1096 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 1097 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 1098 1099 eth_broadcast_addr(msg->da); 1100 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 1101 msg->len = htons(6); 1102 msg->dsap = 0; 1103 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 1104 msg->control = 0xaf; /* XID response lsb.1111F101. 1105 * F=0 (no poll command; unsolicited frame) */ 1106 msg->xid_info[0] = 0x81; /* XID format identifier */ 1107 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 1108 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 1109 1110 skb->dev = sta->sdata->dev; 1111 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 1112 memset(skb->cb, 0, sizeof(skb->cb)); 1113 netif_rx_ni(skb); 1114 } 1115 1116 static int sta_apply_auth_flags(struct ieee80211_local *local, 1117 struct sta_info *sta, 1118 u32 mask, u32 set) 1119 { 1120 int ret; 1121 1122 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1123 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1124 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1125 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1126 if (ret) 1127 return ret; 1128 } 1129 1130 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1131 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1132 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1133 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1134 if (ret) 1135 return ret; 1136 } 1137 1138 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1139 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1140 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1141 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1142 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1143 else 1144 ret = 0; 1145 if (ret) 1146 return ret; 1147 } 1148 1149 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1150 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1151 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1152 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1153 if (ret) 1154 return ret; 1155 } 1156 1157 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1158 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1159 test_sta_flag(sta, WLAN_STA_AUTH)) { 1160 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1161 if (ret) 1162 return ret; 1163 } 1164 1165 return 0; 1166 } 1167 1168 static int sta_apply_parameters(struct ieee80211_local *local, 1169 struct sta_info *sta, 1170 struct station_parameters *params) 1171 { 1172 int ret = 0; 1173 u32 rates; 1174 int i, j; 1175 struct ieee80211_supported_band *sband; 1176 struct ieee80211_sub_if_data *sdata = sta->sdata; 1177 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1178 u32 mask, set; 1179 1180 sband = local->hw.wiphy->bands[band]; 1181 1182 mask = params->sta_flags_mask; 1183 set = params->sta_flags_set; 1184 1185 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1186 /* 1187 * In mesh mode, ASSOCIATED isn't part of the nl80211 1188 * API but must follow AUTHENTICATED for driver state. 1189 */ 1190 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1191 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1192 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1193 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1194 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1195 /* 1196 * TDLS -- everything follows authorized, but 1197 * only becoming authorized is possible, not 1198 * going back 1199 */ 1200 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1201 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1202 BIT(NL80211_STA_FLAG_ASSOCIATED); 1203 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1204 BIT(NL80211_STA_FLAG_ASSOCIATED); 1205 } 1206 } 1207 1208 ret = sta_apply_auth_flags(local, sta, mask, set); 1209 if (ret) 1210 return ret; 1211 1212 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1213 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1214 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1215 else 1216 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1217 } 1218 1219 if (mask & BIT(NL80211_STA_FLAG_WME)) { 1220 if (set & BIT(NL80211_STA_FLAG_WME)) { 1221 set_sta_flag(sta, WLAN_STA_WME); 1222 sta->sta.wme = true; 1223 } else { 1224 clear_sta_flag(sta, WLAN_STA_WME); 1225 sta->sta.wme = false; 1226 } 1227 } 1228 1229 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1230 if (set & BIT(NL80211_STA_FLAG_MFP)) 1231 set_sta_flag(sta, WLAN_STA_MFP); 1232 else 1233 clear_sta_flag(sta, WLAN_STA_MFP); 1234 } 1235 1236 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1237 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1238 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1239 else 1240 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1241 } 1242 1243 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1244 sta->sta.uapsd_queues = params->uapsd_queues; 1245 sta->sta.max_sp = params->max_sp; 1246 } 1247 1248 /* 1249 * cfg80211 validates this (1-2007) and allows setting the AID 1250 * only when creating a new station entry 1251 */ 1252 if (params->aid) 1253 sta->sta.aid = params->aid; 1254 1255 /* 1256 * Some of the following updates would be racy if called on an 1257 * existing station, via ieee80211_change_station(). However, 1258 * all such changes are rejected by cfg80211 except for updates 1259 * changing the supported rates on an existing but not yet used 1260 * TDLS peer. 1261 */ 1262 1263 if (params->listen_interval >= 0) 1264 sta->listen_interval = params->listen_interval; 1265 1266 if (params->supported_rates) { 1267 rates = 0; 1268 1269 for (i = 0; i < params->supported_rates_len; i++) { 1270 int rate = (params->supported_rates[i] & 0x7f) * 5; 1271 for (j = 0; j < sband->n_bitrates; j++) { 1272 if (sband->bitrates[j].bitrate == rate) 1273 rates |= BIT(j); 1274 } 1275 } 1276 sta->sta.supp_rates[band] = rates; 1277 } 1278 1279 if (params->ht_capa) 1280 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1281 params->ht_capa, sta); 1282 1283 if (params->vht_capa) 1284 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1285 params->vht_capa, sta); 1286 1287 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1288 #ifdef CONFIG_MAC80211_MESH 1289 u32 changed = 0; 1290 1291 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1292 switch (params->plink_state) { 1293 case NL80211_PLINK_ESTAB: 1294 if (sta->plink_state != NL80211_PLINK_ESTAB) 1295 changed = mesh_plink_inc_estab_count( 1296 sdata); 1297 sta->plink_state = params->plink_state; 1298 1299 ieee80211_mps_sta_status_update(sta); 1300 changed |= ieee80211_mps_set_sta_local_pm(sta, 1301 sdata->u.mesh.mshcfg.power_mode); 1302 break; 1303 case NL80211_PLINK_LISTEN: 1304 case NL80211_PLINK_BLOCKED: 1305 case NL80211_PLINK_OPN_SNT: 1306 case NL80211_PLINK_OPN_RCVD: 1307 case NL80211_PLINK_CNF_RCVD: 1308 case NL80211_PLINK_HOLDING: 1309 if (sta->plink_state == NL80211_PLINK_ESTAB) 1310 changed = mesh_plink_dec_estab_count( 1311 sdata); 1312 sta->plink_state = params->plink_state; 1313 1314 ieee80211_mps_sta_status_update(sta); 1315 changed |= 1316 ieee80211_mps_local_status_update(sdata); 1317 break; 1318 default: 1319 /* nothing */ 1320 break; 1321 } 1322 } 1323 1324 switch (params->plink_action) { 1325 case NL80211_PLINK_ACTION_NO_ACTION: 1326 /* nothing */ 1327 break; 1328 case NL80211_PLINK_ACTION_OPEN: 1329 changed |= mesh_plink_open(sta); 1330 break; 1331 case NL80211_PLINK_ACTION_BLOCK: 1332 changed |= mesh_plink_block(sta); 1333 break; 1334 } 1335 1336 if (params->local_pm) 1337 changed |= 1338 ieee80211_mps_set_sta_local_pm(sta, 1339 params->local_pm); 1340 ieee80211_bss_info_change_notify(sdata, changed); 1341 #endif 1342 } 1343 1344 return 0; 1345 } 1346 1347 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1348 u8 *mac, struct station_parameters *params) 1349 { 1350 struct ieee80211_local *local = wiphy_priv(wiphy); 1351 struct sta_info *sta; 1352 struct ieee80211_sub_if_data *sdata; 1353 int err; 1354 int layer2_update; 1355 1356 if (params->vlan) { 1357 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1358 1359 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1360 sdata->vif.type != NL80211_IFTYPE_AP) 1361 return -EINVAL; 1362 } else 1363 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1364 1365 if (ether_addr_equal(mac, sdata->vif.addr)) 1366 return -EINVAL; 1367 1368 if (is_multicast_ether_addr(mac)) 1369 return -EINVAL; 1370 1371 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1372 if (!sta) 1373 return -ENOMEM; 1374 1375 /* 1376 * defaults -- if userspace wants something else we'll 1377 * change it accordingly in sta_apply_parameters() 1378 */ 1379 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1380 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1381 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1382 } 1383 1384 err = sta_apply_parameters(local, sta, params); 1385 if (err) { 1386 sta_info_free(local, sta); 1387 return err; 1388 } 1389 1390 /* 1391 * for TDLS, rate control should be initialized only when 1392 * rates are known and station is marked authorized 1393 */ 1394 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1395 rate_control_rate_init(sta); 1396 1397 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1398 sdata->vif.type == NL80211_IFTYPE_AP; 1399 1400 err = sta_info_insert_rcu(sta); 1401 if (err) { 1402 rcu_read_unlock(); 1403 return err; 1404 } 1405 1406 if (layer2_update) 1407 ieee80211_send_layer2_update(sta); 1408 1409 rcu_read_unlock(); 1410 1411 return 0; 1412 } 1413 1414 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1415 u8 *mac) 1416 { 1417 struct ieee80211_sub_if_data *sdata; 1418 1419 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1420 1421 if (mac) 1422 return sta_info_destroy_addr_bss(sdata, mac); 1423 1424 sta_info_flush(sdata); 1425 return 0; 1426 } 1427 1428 static int ieee80211_change_station(struct wiphy *wiphy, 1429 struct net_device *dev, u8 *mac, 1430 struct station_parameters *params) 1431 { 1432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1433 struct ieee80211_local *local = wiphy_priv(wiphy); 1434 struct sta_info *sta; 1435 struct ieee80211_sub_if_data *vlansdata; 1436 enum cfg80211_station_type statype; 1437 int err; 1438 1439 mutex_lock(&local->sta_mtx); 1440 1441 sta = sta_info_get_bss(sdata, mac); 1442 if (!sta) { 1443 err = -ENOENT; 1444 goto out_err; 1445 } 1446 1447 switch (sdata->vif.type) { 1448 case NL80211_IFTYPE_MESH_POINT: 1449 if (sdata->u.mesh.user_mpm) 1450 statype = CFG80211_STA_MESH_PEER_USER; 1451 else 1452 statype = CFG80211_STA_MESH_PEER_KERNEL; 1453 break; 1454 case NL80211_IFTYPE_ADHOC: 1455 statype = CFG80211_STA_IBSS; 1456 break; 1457 case NL80211_IFTYPE_STATION: 1458 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1459 statype = CFG80211_STA_AP_STA; 1460 break; 1461 } 1462 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1463 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1464 else 1465 statype = CFG80211_STA_TDLS_PEER_SETUP; 1466 break; 1467 case NL80211_IFTYPE_AP: 1468 case NL80211_IFTYPE_AP_VLAN: 1469 statype = CFG80211_STA_AP_CLIENT; 1470 break; 1471 default: 1472 err = -EOPNOTSUPP; 1473 goto out_err; 1474 } 1475 1476 err = cfg80211_check_station_change(wiphy, params, statype); 1477 if (err) 1478 goto out_err; 1479 1480 if (params->vlan && params->vlan != sta->sdata->dev) { 1481 bool prev_4addr = false; 1482 bool new_4addr = false; 1483 1484 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1485 1486 if (params->vlan->ieee80211_ptr->use_4addr) { 1487 if (vlansdata->u.vlan.sta) { 1488 err = -EBUSY; 1489 goto out_err; 1490 } 1491 1492 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1493 new_4addr = true; 1494 } 1495 1496 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1497 sta->sdata->u.vlan.sta) { 1498 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL); 1499 prev_4addr = true; 1500 } 1501 1502 sta->sdata = vlansdata; 1503 1504 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1505 prev_4addr != new_4addr) { 1506 if (new_4addr) 1507 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1508 else 1509 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1510 } 1511 1512 ieee80211_send_layer2_update(sta); 1513 } 1514 1515 err = sta_apply_parameters(local, sta, params); 1516 if (err) 1517 goto out_err; 1518 1519 /* When peer becomes authorized, init rate control as well */ 1520 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1521 test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1522 rate_control_rate_init(sta); 1523 1524 mutex_unlock(&local->sta_mtx); 1525 1526 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1527 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1528 ieee80211_recalc_ps(local, -1); 1529 ieee80211_recalc_ps_vif(sdata); 1530 } 1531 1532 return 0; 1533 out_err: 1534 mutex_unlock(&local->sta_mtx); 1535 return err; 1536 } 1537 1538 #ifdef CONFIG_MAC80211_MESH 1539 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1540 u8 *dst, u8 *next_hop) 1541 { 1542 struct ieee80211_sub_if_data *sdata; 1543 struct mesh_path *mpath; 1544 struct sta_info *sta; 1545 1546 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1547 1548 rcu_read_lock(); 1549 sta = sta_info_get(sdata, next_hop); 1550 if (!sta) { 1551 rcu_read_unlock(); 1552 return -ENOENT; 1553 } 1554 1555 mpath = mesh_path_add(sdata, dst); 1556 if (IS_ERR(mpath)) { 1557 rcu_read_unlock(); 1558 return PTR_ERR(mpath); 1559 } 1560 1561 mesh_path_fix_nexthop(mpath, sta); 1562 1563 rcu_read_unlock(); 1564 return 0; 1565 } 1566 1567 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1568 u8 *dst) 1569 { 1570 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1571 1572 if (dst) 1573 return mesh_path_del(sdata, dst); 1574 1575 mesh_path_flush_by_iface(sdata); 1576 return 0; 1577 } 1578 1579 static int ieee80211_change_mpath(struct wiphy *wiphy, 1580 struct net_device *dev, 1581 u8 *dst, u8 *next_hop) 1582 { 1583 struct ieee80211_sub_if_data *sdata; 1584 struct mesh_path *mpath; 1585 struct sta_info *sta; 1586 1587 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1588 1589 rcu_read_lock(); 1590 1591 sta = sta_info_get(sdata, next_hop); 1592 if (!sta) { 1593 rcu_read_unlock(); 1594 return -ENOENT; 1595 } 1596 1597 mpath = mesh_path_lookup(sdata, dst); 1598 if (!mpath) { 1599 rcu_read_unlock(); 1600 return -ENOENT; 1601 } 1602 1603 mesh_path_fix_nexthop(mpath, sta); 1604 1605 rcu_read_unlock(); 1606 return 0; 1607 } 1608 1609 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1610 struct mpath_info *pinfo) 1611 { 1612 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1613 1614 if (next_hop_sta) 1615 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1616 else 1617 memset(next_hop, 0, ETH_ALEN); 1618 1619 memset(pinfo, 0, sizeof(*pinfo)); 1620 1621 pinfo->generation = mesh_paths_generation; 1622 1623 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1624 MPATH_INFO_SN | 1625 MPATH_INFO_METRIC | 1626 MPATH_INFO_EXPTIME | 1627 MPATH_INFO_DISCOVERY_TIMEOUT | 1628 MPATH_INFO_DISCOVERY_RETRIES | 1629 MPATH_INFO_FLAGS; 1630 1631 pinfo->frame_qlen = mpath->frame_queue.qlen; 1632 pinfo->sn = mpath->sn; 1633 pinfo->metric = mpath->metric; 1634 if (time_before(jiffies, mpath->exp_time)) 1635 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1636 pinfo->discovery_timeout = 1637 jiffies_to_msecs(mpath->discovery_timeout); 1638 pinfo->discovery_retries = mpath->discovery_retries; 1639 if (mpath->flags & MESH_PATH_ACTIVE) 1640 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1641 if (mpath->flags & MESH_PATH_RESOLVING) 1642 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1643 if (mpath->flags & MESH_PATH_SN_VALID) 1644 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1645 if (mpath->flags & MESH_PATH_FIXED) 1646 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1647 if (mpath->flags & MESH_PATH_RESOLVED) 1648 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1649 } 1650 1651 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1652 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1653 1654 { 1655 struct ieee80211_sub_if_data *sdata; 1656 struct mesh_path *mpath; 1657 1658 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1659 1660 rcu_read_lock(); 1661 mpath = mesh_path_lookup(sdata, dst); 1662 if (!mpath) { 1663 rcu_read_unlock(); 1664 return -ENOENT; 1665 } 1666 memcpy(dst, mpath->dst, ETH_ALEN); 1667 mpath_set_pinfo(mpath, next_hop, pinfo); 1668 rcu_read_unlock(); 1669 return 0; 1670 } 1671 1672 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1673 int idx, u8 *dst, u8 *next_hop, 1674 struct mpath_info *pinfo) 1675 { 1676 struct ieee80211_sub_if_data *sdata; 1677 struct mesh_path *mpath; 1678 1679 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1680 1681 rcu_read_lock(); 1682 mpath = mesh_path_lookup_by_idx(sdata, idx); 1683 if (!mpath) { 1684 rcu_read_unlock(); 1685 return -ENOENT; 1686 } 1687 memcpy(dst, mpath->dst, ETH_ALEN); 1688 mpath_set_pinfo(mpath, next_hop, pinfo); 1689 rcu_read_unlock(); 1690 return 0; 1691 } 1692 1693 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1694 struct net_device *dev, 1695 struct mesh_config *conf) 1696 { 1697 struct ieee80211_sub_if_data *sdata; 1698 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1699 1700 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1701 return 0; 1702 } 1703 1704 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1705 { 1706 return (mask >> (parm-1)) & 0x1; 1707 } 1708 1709 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1710 const struct mesh_setup *setup) 1711 { 1712 u8 *new_ie; 1713 const u8 *old_ie; 1714 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1715 struct ieee80211_sub_if_data, u.mesh); 1716 1717 /* allocate information elements */ 1718 new_ie = NULL; 1719 old_ie = ifmsh->ie; 1720 1721 if (setup->ie_len) { 1722 new_ie = kmemdup(setup->ie, setup->ie_len, 1723 GFP_KERNEL); 1724 if (!new_ie) 1725 return -ENOMEM; 1726 } 1727 ifmsh->ie_len = setup->ie_len; 1728 ifmsh->ie = new_ie; 1729 kfree(old_ie); 1730 1731 /* now copy the rest of the setup parameters */ 1732 ifmsh->mesh_id_len = setup->mesh_id_len; 1733 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1734 ifmsh->mesh_sp_id = setup->sync_method; 1735 ifmsh->mesh_pp_id = setup->path_sel_proto; 1736 ifmsh->mesh_pm_id = setup->path_metric; 1737 ifmsh->user_mpm = setup->user_mpm; 1738 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1739 if (setup->is_authenticated) 1740 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1741 if (setup->is_secure) 1742 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1743 1744 /* mcast rate setting in Mesh Node */ 1745 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1746 sizeof(setup->mcast_rate)); 1747 1748 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1749 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1750 1751 return 0; 1752 } 1753 1754 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1755 struct net_device *dev, u32 mask, 1756 const struct mesh_config *nconf) 1757 { 1758 struct mesh_config *conf; 1759 struct ieee80211_sub_if_data *sdata; 1760 struct ieee80211_if_mesh *ifmsh; 1761 1762 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1763 ifmsh = &sdata->u.mesh; 1764 1765 /* Set the config options which we are interested in setting */ 1766 conf = &(sdata->u.mesh.mshcfg); 1767 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1768 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1769 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1770 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1771 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1772 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1773 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1774 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1775 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1776 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1777 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1778 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1779 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1780 conf->element_ttl = nconf->element_ttl; 1781 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1782 if (ifmsh->user_mpm) 1783 return -EBUSY; 1784 conf->auto_open_plinks = nconf->auto_open_plinks; 1785 } 1786 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1787 conf->dot11MeshNbrOffsetMaxNeighbor = 1788 nconf->dot11MeshNbrOffsetMaxNeighbor; 1789 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1790 conf->dot11MeshHWMPmaxPREQretries = 1791 nconf->dot11MeshHWMPmaxPREQretries; 1792 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1793 conf->path_refresh_time = nconf->path_refresh_time; 1794 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1795 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1796 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1797 conf->dot11MeshHWMPactivePathTimeout = 1798 nconf->dot11MeshHWMPactivePathTimeout; 1799 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1800 conf->dot11MeshHWMPpreqMinInterval = 1801 nconf->dot11MeshHWMPpreqMinInterval; 1802 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1803 conf->dot11MeshHWMPperrMinInterval = 1804 nconf->dot11MeshHWMPperrMinInterval; 1805 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1806 mask)) 1807 conf->dot11MeshHWMPnetDiameterTraversalTime = 1808 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1809 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1810 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1811 ieee80211_mesh_root_setup(ifmsh); 1812 } 1813 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1814 /* our current gate announcement implementation rides on root 1815 * announcements, so require this ifmsh to also be a root node 1816 * */ 1817 if (nconf->dot11MeshGateAnnouncementProtocol && 1818 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1819 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1820 ieee80211_mesh_root_setup(ifmsh); 1821 } 1822 conf->dot11MeshGateAnnouncementProtocol = 1823 nconf->dot11MeshGateAnnouncementProtocol; 1824 } 1825 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1826 conf->dot11MeshHWMPRannInterval = 1827 nconf->dot11MeshHWMPRannInterval; 1828 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1829 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1830 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1831 /* our RSSI threshold implementation is supported only for 1832 * devices that report signal in dBm. 1833 */ 1834 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1835 return -ENOTSUPP; 1836 conf->rssi_threshold = nconf->rssi_threshold; 1837 } 1838 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1839 conf->ht_opmode = nconf->ht_opmode; 1840 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1841 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1842 } 1843 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1844 conf->dot11MeshHWMPactivePathToRootTimeout = 1845 nconf->dot11MeshHWMPactivePathToRootTimeout; 1846 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1847 conf->dot11MeshHWMProotInterval = 1848 nconf->dot11MeshHWMProotInterval; 1849 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1850 conf->dot11MeshHWMPconfirmationInterval = 1851 nconf->dot11MeshHWMPconfirmationInterval; 1852 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1853 conf->power_mode = nconf->power_mode; 1854 ieee80211_mps_local_status_update(sdata); 1855 } 1856 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1857 conf->dot11MeshAwakeWindowDuration = 1858 nconf->dot11MeshAwakeWindowDuration; 1859 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1860 return 0; 1861 } 1862 1863 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1864 const struct mesh_config *conf, 1865 const struct mesh_setup *setup) 1866 { 1867 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1868 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1869 int err; 1870 1871 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1872 err = copy_mesh_setup(ifmsh, setup); 1873 if (err) 1874 return err; 1875 1876 /* can mesh use other SMPS modes? */ 1877 sdata->smps_mode = IEEE80211_SMPS_OFF; 1878 sdata->needed_rx_chains = sdata->local->rx_chains; 1879 1880 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1881 IEEE80211_CHANCTX_SHARED); 1882 if (err) 1883 return err; 1884 1885 return ieee80211_start_mesh(sdata); 1886 } 1887 1888 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1889 { 1890 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1891 1892 ieee80211_stop_mesh(sdata); 1893 ieee80211_vif_release_channel(sdata); 1894 1895 return 0; 1896 } 1897 #endif 1898 1899 static int ieee80211_change_bss(struct wiphy *wiphy, 1900 struct net_device *dev, 1901 struct bss_parameters *params) 1902 { 1903 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1904 enum ieee80211_band band; 1905 u32 changed = 0; 1906 1907 if (!rtnl_dereference(sdata->u.ap.beacon)) 1908 return -ENOENT; 1909 1910 band = ieee80211_get_sdata_band(sdata); 1911 1912 if (params->use_cts_prot >= 0) { 1913 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1914 changed |= BSS_CHANGED_ERP_CTS_PROT; 1915 } 1916 if (params->use_short_preamble >= 0) { 1917 sdata->vif.bss_conf.use_short_preamble = 1918 params->use_short_preamble; 1919 changed |= BSS_CHANGED_ERP_PREAMBLE; 1920 } 1921 1922 if (!sdata->vif.bss_conf.use_short_slot && 1923 band == IEEE80211_BAND_5GHZ) { 1924 sdata->vif.bss_conf.use_short_slot = true; 1925 changed |= BSS_CHANGED_ERP_SLOT; 1926 } 1927 1928 if (params->use_short_slot_time >= 0) { 1929 sdata->vif.bss_conf.use_short_slot = 1930 params->use_short_slot_time; 1931 changed |= BSS_CHANGED_ERP_SLOT; 1932 } 1933 1934 if (params->basic_rates) { 1935 int i, j; 1936 u32 rates = 0; 1937 struct ieee80211_supported_band *sband = wiphy->bands[band]; 1938 1939 for (i = 0; i < params->basic_rates_len; i++) { 1940 int rate = (params->basic_rates[i] & 0x7f) * 5; 1941 for (j = 0; j < sband->n_bitrates; j++) { 1942 if (sband->bitrates[j].bitrate == rate) 1943 rates |= BIT(j); 1944 } 1945 } 1946 sdata->vif.bss_conf.basic_rates = rates; 1947 changed |= BSS_CHANGED_BASIC_RATES; 1948 } 1949 1950 if (params->ap_isolate >= 0) { 1951 if (params->ap_isolate) 1952 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1953 else 1954 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1955 } 1956 1957 if (params->ht_opmode >= 0) { 1958 sdata->vif.bss_conf.ht_operation_mode = 1959 (u16) params->ht_opmode; 1960 changed |= BSS_CHANGED_HT; 1961 } 1962 1963 if (params->p2p_ctwindow >= 0) { 1964 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1965 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1966 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1967 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1968 changed |= BSS_CHANGED_P2P_PS; 1969 } 1970 1971 if (params->p2p_opp_ps > 0) { 1972 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1973 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1974 changed |= BSS_CHANGED_P2P_PS; 1975 } else if (params->p2p_opp_ps == 0) { 1976 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1977 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1978 changed |= BSS_CHANGED_P2P_PS; 1979 } 1980 1981 ieee80211_bss_info_change_notify(sdata, changed); 1982 1983 return 0; 1984 } 1985 1986 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1987 struct net_device *dev, 1988 struct ieee80211_txq_params *params) 1989 { 1990 struct ieee80211_local *local = wiphy_priv(wiphy); 1991 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1992 struct ieee80211_tx_queue_params p; 1993 1994 if (!local->ops->conf_tx) 1995 return -EOPNOTSUPP; 1996 1997 if (local->hw.queues < IEEE80211_NUM_ACS) 1998 return -EOPNOTSUPP; 1999 2000 memset(&p, 0, sizeof(p)); 2001 p.aifs = params->aifs; 2002 p.cw_max = params->cwmax; 2003 p.cw_min = params->cwmin; 2004 p.txop = params->txop; 2005 2006 /* 2007 * Setting tx queue params disables u-apsd because it's only 2008 * called in master mode. 2009 */ 2010 p.uapsd = false; 2011 2012 sdata->tx_conf[params->ac] = p; 2013 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2014 wiphy_debug(local->hw.wiphy, 2015 "failed to set TX queue parameters for AC %d\n", 2016 params->ac); 2017 return -EINVAL; 2018 } 2019 2020 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2021 2022 return 0; 2023 } 2024 2025 #ifdef CONFIG_PM 2026 static int ieee80211_suspend(struct wiphy *wiphy, 2027 struct cfg80211_wowlan *wowlan) 2028 { 2029 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2030 } 2031 2032 static int ieee80211_resume(struct wiphy *wiphy) 2033 { 2034 return __ieee80211_resume(wiphy_priv(wiphy)); 2035 } 2036 #else 2037 #define ieee80211_suspend NULL 2038 #define ieee80211_resume NULL 2039 #endif 2040 2041 static int ieee80211_scan(struct wiphy *wiphy, 2042 struct cfg80211_scan_request *req) 2043 { 2044 struct ieee80211_sub_if_data *sdata; 2045 2046 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2047 2048 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2049 case NL80211_IFTYPE_STATION: 2050 case NL80211_IFTYPE_ADHOC: 2051 case NL80211_IFTYPE_MESH_POINT: 2052 case NL80211_IFTYPE_P2P_CLIENT: 2053 case NL80211_IFTYPE_P2P_DEVICE: 2054 break; 2055 case NL80211_IFTYPE_P2P_GO: 2056 if (sdata->local->ops->hw_scan) 2057 break; 2058 /* 2059 * FIXME: implement NoA while scanning in software, 2060 * for now fall through to allow scanning only when 2061 * beaconing hasn't been configured yet 2062 */ 2063 case NL80211_IFTYPE_AP: 2064 /* 2065 * If the scan has been forced (and the driver supports 2066 * forcing), don't care about being beaconing already. 2067 * This will create problems to the attached stations (e.g. all 2068 * the frames sent while scanning on other channel will be 2069 * lost) 2070 */ 2071 if (sdata->u.ap.beacon && 2072 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2073 !(req->flags & NL80211_SCAN_FLAG_AP))) 2074 return -EOPNOTSUPP; 2075 break; 2076 default: 2077 return -EOPNOTSUPP; 2078 } 2079 2080 return ieee80211_request_scan(sdata, req); 2081 } 2082 2083 static int 2084 ieee80211_sched_scan_start(struct wiphy *wiphy, 2085 struct net_device *dev, 2086 struct cfg80211_sched_scan_request *req) 2087 { 2088 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2089 2090 if (!sdata->local->ops->sched_scan_start) 2091 return -EOPNOTSUPP; 2092 2093 return ieee80211_request_sched_scan_start(sdata, req); 2094 } 2095 2096 static int 2097 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2098 { 2099 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2100 2101 if (!sdata->local->ops->sched_scan_stop) 2102 return -EOPNOTSUPP; 2103 2104 return ieee80211_request_sched_scan_stop(sdata); 2105 } 2106 2107 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2108 struct cfg80211_auth_request *req) 2109 { 2110 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2111 } 2112 2113 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2114 struct cfg80211_assoc_request *req) 2115 { 2116 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2117 } 2118 2119 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2120 struct cfg80211_deauth_request *req) 2121 { 2122 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2123 } 2124 2125 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2126 struct cfg80211_disassoc_request *req) 2127 { 2128 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2129 } 2130 2131 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2132 struct cfg80211_ibss_params *params) 2133 { 2134 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2135 } 2136 2137 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2138 { 2139 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2140 } 2141 2142 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2143 int rate[IEEE80211_NUM_BANDS]) 2144 { 2145 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2146 2147 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2148 sizeof(int) * IEEE80211_NUM_BANDS); 2149 2150 return 0; 2151 } 2152 2153 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2154 { 2155 struct ieee80211_local *local = wiphy_priv(wiphy); 2156 int err; 2157 2158 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2159 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2160 2161 if (err) 2162 return err; 2163 } 2164 2165 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 2166 err = drv_set_coverage_class(local, wiphy->coverage_class); 2167 2168 if (err) 2169 return err; 2170 } 2171 2172 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2173 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2174 2175 if (err) 2176 return err; 2177 } 2178 2179 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2180 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2181 return -EINVAL; 2182 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2183 } 2184 if (changed & WIPHY_PARAM_RETRY_LONG) { 2185 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2186 return -EINVAL; 2187 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2188 } 2189 if (changed & 2190 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2191 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2192 2193 return 0; 2194 } 2195 2196 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2197 struct wireless_dev *wdev, 2198 enum nl80211_tx_power_setting type, int mbm) 2199 { 2200 struct ieee80211_local *local = wiphy_priv(wiphy); 2201 struct ieee80211_sub_if_data *sdata; 2202 2203 if (wdev) { 2204 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2205 2206 switch (type) { 2207 case NL80211_TX_POWER_AUTOMATIC: 2208 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2209 break; 2210 case NL80211_TX_POWER_LIMITED: 2211 case NL80211_TX_POWER_FIXED: 2212 if (mbm < 0 || (mbm % 100)) 2213 return -EOPNOTSUPP; 2214 sdata->user_power_level = MBM_TO_DBM(mbm); 2215 break; 2216 } 2217 2218 ieee80211_recalc_txpower(sdata); 2219 2220 return 0; 2221 } 2222 2223 switch (type) { 2224 case NL80211_TX_POWER_AUTOMATIC: 2225 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2226 break; 2227 case NL80211_TX_POWER_LIMITED: 2228 case NL80211_TX_POWER_FIXED: 2229 if (mbm < 0 || (mbm % 100)) 2230 return -EOPNOTSUPP; 2231 local->user_power_level = MBM_TO_DBM(mbm); 2232 break; 2233 } 2234 2235 mutex_lock(&local->iflist_mtx); 2236 list_for_each_entry(sdata, &local->interfaces, list) 2237 sdata->user_power_level = local->user_power_level; 2238 list_for_each_entry(sdata, &local->interfaces, list) 2239 ieee80211_recalc_txpower(sdata); 2240 mutex_unlock(&local->iflist_mtx); 2241 2242 return 0; 2243 } 2244 2245 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2246 struct wireless_dev *wdev, 2247 int *dbm) 2248 { 2249 struct ieee80211_local *local = wiphy_priv(wiphy); 2250 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2251 2252 if (!local->use_chanctx) 2253 *dbm = local->hw.conf.power_level; 2254 else 2255 *dbm = sdata->vif.bss_conf.txpower; 2256 2257 return 0; 2258 } 2259 2260 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2261 const u8 *addr) 2262 { 2263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2264 2265 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2266 2267 return 0; 2268 } 2269 2270 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2271 { 2272 struct ieee80211_local *local = wiphy_priv(wiphy); 2273 2274 drv_rfkill_poll(local); 2275 } 2276 2277 #ifdef CONFIG_NL80211_TESTMODE 2278 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 2279 { 2280 struct ieee80211_local *local = wiphy_priv(wiphy); 2281 2282 if (!local->ops->testmode_cmd) 2283 return -EOPNOTSUPP; 2284 2285 return local->ops->testmode_cmd(&local->hw, data, len); 2286 } 2287 2288 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2289 struct sk_buff *skb, 2290 struct netlink_callback *cb, 2291 void *data, int len) 2292 { 2293 struct ieee80211_local *local = wiphy_priv(wiphy); 2294 2295 if (!local->ops->testmode_dump) 2296 return -EOPNOTSUPP; 2297 2298 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2299 } 2300 #endif 2301 2302 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 2303 enum ieee80211_smps_mode smps_mode) 2304 { 2305 const u8 *ap; 2306 enum ieee80211_smps_mode old_req; 2307 int err; 2308 2309 lockdep_assert_held(&sdata->u.mgd.mtx); 2310 2311 old_req = sdata->u.mgd.req_smps; 2312 sdata->u.mgd.req_smps = smps_mode; 2313 2314 if (old_req == smps_mode && 2315 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2316 return 0; 2317 2318 /* 2319 * If not associated, or current association is not an HT 2320 * association, there's no need to do anything, just store 2321 * the new value until we associate. 2322 */ 2323 if (!sdata->u.mgd.associated || 2324 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2325 return 0; 2326 2327 ap = sdata->u.mgd.associated->bssid; 2328 2329 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2330 if (sdata->u.mgd.powersave) 2331 smps_mode = IEEE80211_SMPS_DYNAMIC; 2332 else 2333 smps_mode = IEEE80211_SMPS_OFF; 2334 } 2335 2336 /* send SM PS frame to AP */ 2337 err = ieee80211_send_smps_action(sdata, smps_mode, 2338 ap, ap); 2339 if (err) 2340 sdata->u.mgd.req_smps = old_req; 2341 2342 return err; 2343 } 2344 2345 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2346 bool enabled, int timeout) 2347 { 2348 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2349 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2350 2351 if (sdata->vif.type != NL80211_IFTYPE_STATION && 2352 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 2353 return -EOPNOTSUPP; 2354 2355 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2356 return -EOPNOTSUPP; 2357 2358 if (enabled == sdata->u.mgd.powersave && 2359 timeout == local->dynamic_ps_forced_timeout) 2360 return 0; 2361 2362 sdata->u.mgd.powersave = enabled; 2363 local->dynamic_ps_forced_timeout = timeout; 2364 2365 /* no change, but if automatic follow powersave */ 2366 mutex_lock(&sdata->u.mgd.mtx); 2367 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 2368 mutex_unlock(&sdata->u.mgd.mtx); 2369 2370 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2371 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2372 2373 ieee80211_recalc_ps(local, -1); 2374 ieee80211_recalc_ps_vif(sdata); 2375 2376 return 0; 2377 } 2378 2379 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2380 struct net_device *dev, 2381 s32 rssi_thold, u32 rssi_hyst) 2382 { 2383 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2384 struct ieee80211_vif *vif = &sdata->vif; 2385 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2386 2387 if (rssi_thold == bss_conf->cqm_rssi_thold && 2388 rssi_hyst == bss_conf->cqm_rssi_hyst) 2389 return 0; 2390 2391 bss_conf->cqm_rssi_thold = rssi_thold; 2392 bss_conf->cqm_rssi_hyst = rssi_hyst; 2393 2394 /* tell the driver upon association, unless already associated */ 2395 if (sdata->u.mgd.associated && 2396 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2397 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2398 2399 return 0; 2400 } 2401 2402 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2403 struct net_device *dev, 2404 const u8 *addr, 2405 const struct cfg80211_bitrate_mask *mask) 2406 { 2407 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2408 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2409 int i, ret; 2410 2411 if (!ieee80211_sdata_running(sdata)) 2412 return -ENETDOWN; 2413 2414 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2415 ret = drv_set_bitrate_mask(local, sdata, mask); 2416 if (ret) 2417 return ret; 2418 } 2419 2420 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2421 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2422 int j; 2423 2424 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2425 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 2426 sizeof(mask->control[i].mcs)); 2427 2428 sdata->rc_has_mcs_mask[i] = false; 2429 if (!sband) 2430 continue; 2431 2432 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2433 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2434 sdata->rc_has_mcs_mask[i] = true; 2435 break; 2436 } 2437 } 2438 2439 return 0; 2440 } 2441 2442 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2443 struct ieee80211_sub_if_data *sdata, 2444 struct ieee80211_channel *channel, 2445 unsigned int duration, u64 *cookie, 2446 struct sk_buff *txskb, 2447 enum ieee80211_roc_type type) 2448 { 2449 struct ieee80211_roc_work *roc, *tmp; 2450 bool queued = false; 2451 int ret; 2452 2453 lockdep_assert_held(&local->mtx); 2454 2455 if (local->use_chanctx && !local->ops->remain_on_channel) 2456 return -EOPNOTSUPP; 2457 2458 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2459 if (!roc) 2460 return -ENOMEM; 2461 2462 roc->chan = channel; 2463 roc->duration = duration; 2464 roc->req_duration = duration; 2465 roc->frame = txskb; 2466 roc->type = type; 2467 roc->mgmt_tx_cookie = (unsigned long)txskb; 2468 roc->sdata = sdata; 2469 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2470 INIT_LIST_HEAD(&roc->dependents); 2471 2472 /* if there's one pending or we're scanning, queue this one */ 2473 if (!list_empty(&local->roc_list) || 2474 local->scanning || local->radar_detect_enabled) 2475 goto out_check_combine; 2476 2477 /* if not HW assist, just queue & schedule work */ 2478 if (!local->ops->remain_on_channel) { 2479 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2480 goto out_queue; 2481 } 2482 2483 /* otherwise actually kick it off here (for error handling) */ 2484 2485 /* 2486 * If the duration is zero, then the driver 2487 * wouldn't actually do anything. Set it to 2488 * 10 for now. 2489 * 2490 * TODO: cancel the off-channel operation 2491 * when we get the SKB's TX status and 2492 * the wait time was zero before. 2493 */ 2494 if (!duration) 2495 duration = 10; 2496 2497 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2498 if (ret) { 2499 kfree(roc); 2500 return ret; 2501 } 2502 2503 roc->started = true; 2504 goto out_queue; 2505 2506 out_check_combine: 2507 list_for_each_entry(tmp, &local->roc_list, list) { 2508 if (tmp->chan != channel || tmp->sdata != sdata) 2509 continue; 2510 2511 /* 2512 * Extend this ROC if possible: 2513 * 2514 * If it hasn't started yet, just increase the duration 2515 * and add the new one to the list of dependents. 2516 * If the type of the new ROC has higher priority, modify the 2517 * type of the previous one to match that of the new one. 2518 */ 2519 if (!tmp->started) { 2520 list_add_tail(&roc->list, &tmp->dependents); 2521 tmp->duration = max(tmp->duration, roc->duration); 2522 tmp->type = max(tmp->type, roc->type); 2523 queued = true; 2524 break; 2525 } 2526 2527 /* If it has already started, it's more difficult ... */ 2528 if (local->ops->remain_on_channel) { 2529 unsigned long j = jiffies; 2530 2531 /* 2532 * In the offloaded ROC case, if it hasn't begun, add 2533 * this new one to the dependent list to be handled 2534 * when the master one begins. If it has begun, 2535 * check that there's still a minimum time left and 2536 * if so, start this one, transmitting the frame, but 2537 * add it to the list directly after this one with 2538 * a reduced time so we'll ask the driver to execute 2539 * it right after finishing the previous one, in the 2540 * hope that it'll also be executed right afterwards, 2541 * effectively extending the old one. 2542 * If there's no minimum time left, just add it to the 2543 * normal list. 2544 * TODO: the ROC type is ignored here, assuming that it 2545 * is better to immediately use the current ROC. 2546 */ 2547 if (!tmp->hw_begun) { 2548 list_add_tail(&roc->list, &tmp->dependents); 2549 queued = true; 2550 break; 2551 } 2552 2553 if (time_before(j + IEEE80211_ROC_MIN_LEFT, 2554 tmp->hw_start_time + 2555 msecs_to_jiffies(tmp->duration))) { 2556 int new_dur; 2557 2558 ieee80211_handle_roc_started(roc); 2559 2560 new_dur = roc->duration - 2561 jiffies_to_msecs(tmp->hw_start_time + 2562 msecs_to_jiffies( 2563 tmp->duration) - 2564 j); 2565 2566 if (new_dur > 0) { 2567 /* add right after tmp */ 2568 list_add(&roc->list, &tmp->list); 2569 } else { 2570 list_add_tail(&roc->list, 2571 &tmp->dependents); 2572 } 2573 queued = true; 2574 } 2575 } else if (del_timer_sync(&tmp->work.timer)) { 2576 unsigned long new_end; 2577 2578 /* 2579 * In the software ROC case, cancel the timer, if 2580 * that fails then the finish work is already 2581 * queued/pending and thus we queue the new ROC 2582 * normally, if that succeeds then we can extend 2583 * the timer duration and TX the frame (if any.) 2584 */ 2585 2586 list_add_tail(&roc->list, &tmp->dependents); 2587 queued = true; 2588 2589 new_end = jiffies + msecs_to_jiffies(roc->duration); 2590 2591 /* ok, it was started & we canceled timer */ 2592 if (time_after(new_end, tmp->work.timer.expires)) 2593 mod_timer(&tmp->work.timer, new_end); 2594 else 2595 add_timer(&tmp->work.timer); 2596 2597 ieee80211_handle_roc_started(roc); 2598 } 2599 break; 2600 } 2601 2602 out_queue: 2603 if (!queued) 2604 list_add_tail(&roc->list, &local->roc_list); 2605 2606 /* 2607 * cookie is either the roc cookie (for normal roc) 2608 * or the SKB (for mgmt TX) 2609 */ 2610 if (!txskb) { 2611 /* local->mtx protects this */ 2612 local->roc_cookie_counter++; 2613 roc->cookie = local->roc_cookie_counter; 2614 /* wow, you wrapped 64 bits ... more likely a bug */ 2615 if (WARN_ON(roc->cookie == 0)) { 2616 roc->cookie = 1; 2617 local->roc_cookie_counter++; 2618 } 2619 *cookie = roc->cookie; 2620 } else { 2621 *cookie = (unsigned long)txskb; 2622 } 2623 2624 return 0; 2625 } 2626 2627 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2628 struct wireless_dev *wdev, 2629 struct ieee80211_channel *chan, 2630 unsigned int duration, 2631 u64 *cookie) 2632 { 2633 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2634 struct ieee80211_local *local = sdata->local; 2635 int ret; 2636 2637 mutex_lock(&local->mtx); 2638 ret = ieee80211_start_roc_work(local, sdata, chan, 2639 duration, cookie, NULL, 2640 IEEE80211_ROC_TYPE_NORMAL); 2641 mutex_unlock(&local->mtx); 2642 2643 return ret; 2644 } 2645 2646 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2647 u64 cookie, bool mgmt_tx) 2648 { 2649 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2650 int ret; 2651 2652 mutex_lock(&local->mtx); 2653 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2654 struct ieee80211_roc_work *dep, *tmp2; 2655 2656 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2657 if (!mgmt_tx && dep->cookie != cookie) 2658 continue; 2659 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2660 continue; 2661 /* found dependent item -- just remove it */ 2662 list_del(&dep->list); 2663 mutex_unlock(&local->mtx); 2664 2665 ieee80211_roc_notify_destroy(dep, true); 2666 return 0; 2667 } 2668 2669 if (!mgmt_tx && roc->cookie != cookie) 2670 continue; 2671 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2672 continue; 2673 2674 found = roc; 2675 break; 2676 } 2677 2678 if (!found) { 2679 mutex_unlock(&local->mtx); 2680 return -ENOENT; 2681 } 2682 2683 /* 2684 * We found the item to cancel, so do that. Note that it 2685 * may have dependents, which we also cancel (and send 2686 * the expired signal for.) Not doing so would be quite 2687 * tricky here, but we may need to fix it later. 2688 */ 2689 2690 if (local->ops->remain_on_channel) { 2691 if (found->started) { 2692 ret = drv_cancel_remain_on_channel(local); 2693 if (WARN_ON_ONCE(ret)) { 2694 mutex_unlock(&local->mtx); 2695 return ret; 2696 } 2697 } 2698 2699 list_del(&found->list); 2700 2701 if (found->started) 2702 ieee80211_start_next_roc(local); 2703 mutex_unlock(&local->mtx); 2704 2705 ieee80211_roc_notify_destroy(found, true); 2706 } else { 2707 /* work may be pending so use it all the time */ 2708 found->abort = true; 2709 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2710 2711 mutex_unlock(&local->mtx); 2712 2713 /* work will clean up etc */ 2714 flush_delayed_work(&found->work); 2715 WARN_ON(!found->to_be_freed); 2716 kfree(found); 2717 } 2718 2719 return 0; 2720 } 2721 2722 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2723 struct wireless_dev *wdev, 2724 u64 cookie) 2725 { 2726 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2727 struct ieee80211_local *local = sdata->local; 2728 2729 return ieee80211_cancel_roc(local, cookie, false); 2730 } 2731 2732 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2733 struct net_device *dev, 2734 struct cfg80211_chan_def *chandef) 2735 { 2736 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2737 struct ieee80211_local *local = sdata->local; 2738 unsigned long timeout; 2739 int err; 2740 2741 if (!list_empty(&local->roc_list) || local->scanning) 2742 return -EBUSY; 2743 2744 /* whatever, but channel contexts should not complain about that one */ 2745 sdata->smps_mode = IEEE80211_SMPS_OFF; 2746 sdata->needed_rx_chains = local->rx_chains; 2747 sdata->radar_required = true; 2748 2749 mutex_lock(&local->iflist_mtx); 2750 err = ieee80211_vif_use_channel(sdata, chandef, 2751 IEEE80211_CHANCTX_SHARED); 2752 mutex_unlock(&local->iflist_mtx); 2753 if (err) 2754 return err; 2755 2756 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS); 2757 ieee80211_queue_delayed_work(&sdata->local->hw, 2758 &sdata->dfs_cac_timer_work, timeout); 2759 2760 return 0; 2761 } 2762 2763 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 2764 struct ieee80211_channel *chan, bool offchan, 2765 unsigned int wait, const u8 *buf, size_t len, 2766 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 2767 { 2768 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2769 struct ieee80211_local *local = sdata->local; 2770 struct sk_buff *skb; 2771 struct sta_info *sta; 2772 const struct ieee80211_mgmt *mgmt = (void *)buf; 2773 bool need_offchan = false; 2774 u32 flags; 2775 int ret; 2776 2777 if (dont_wait_for_ack) 2778 flags = IEEE80211_TX_CTL_NO_ACK; 2779 else 2780 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2781 IEEE80211_TX_CTL_REQ_TX_STATUS; 2782 2783 if (no_cck) 2784 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2785 2786 switch (sdata->vif.type) { 2787 case NL80211_IFTYPE_ADHOC: 2788 if (!sdata->vif.bss_conf.ibss_joined) 2789 need_offchan = true; 2790 /* fall through */ 2791 #ifdef CONFIG_MAC80211_MESH 2792 case NL80211_IFTYPE_MESH_POINT: 2793 if (ieee80211_vif_is_mesh(&sdata->vif) && 2794 !sdata->u.mesh.mesh_id_len) 2795 need_offchan = true; 2796 /* fall through */ 2797 #endif 2798 case NL80211_IFTYPE_AP: 2799 case NL80211_IFTYPE_AP_VLAN: 2800 case NL80211_IFTYPE_P2P_GO: 2801 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 2802 !ieee80211_vif_is_mesh(&sdata->vif) && 2803 !rcu_access_pointer(sdata->bss->beacon)) 2804 need_offchan = true; 2805 if (!ieee80211_is_action(mgmt->frame_control) || 2806 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2807 break; 2808 rcu_read_lock(); 2809 sta = sta_info_get(sdata, mgmt->da); 2810 rcu_read_unlock(); 2811 if (!sta) 2812 return -ENOLINK; 2813 break; 2814 case NL80211_IFTYPE_STATION: 2815 case NL80211_IFTYPE_P2P_CLIENT: 2816 if (!sdata->u.mgd.associated) 2817 need_offchan = true; 2818 break; 2819 case NL80211_IFTYPE_P2P_DEVICE: 2820 need_offchan = true; 2821 break; 2822 default: 2823 return -EOPNOTSUPP; 2824 } 2825 2826 mutex_lock(&local->mtx); 2827 2828 /* Check if the operating channel is the requested channel */ 2829 if (!need_offchan) { 2830 struct ieee80211_chanctx_conf *chanctx_conf; 2831 2832 rcu_read_lock(); 2833 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2834 2835 if (chanctx_conf) 2836 need_offchan = chan != chanctx_conf->def.chan; 2837 else 2838 need_offchan = true; 2839 rcu_read_unlock(); 2840 } 2841 2842 if (need_offchan && !offchan) { 2843 ret = -EBUSY; 2844 goto out_unlock; 2845 } 2846 2847 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2848 if (!skb) { 2849 ret = -ENOMEM; 2850 goto out_unlock; 2851 } 2852 skb_reserve(skb, local->hw.extra_tx_headroom); 2853 2854 memcpy(skb_put(skb, len), buf, len); 2855 2856 IEEE80211_SKB_CB(skb)->flags = flags; 2857 2858 skb->dev = sdata->dev; 2859 2860 if (!need_offchan) { 2861 *cookie = (unsigned long) skb; 2862 ieee80211_tx_skb(sdata, skb); 2863 ret = 0; 2864 goto out_unlock; 2865 } 2866 2867 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 2868 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 2869 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 2870 IEEE80211_SKB_CB(skb)->hw_queue = 2871 local->hw.offchannel_tx_hw_queue; 2872 2873 /* This will handle all kinds of coalescing and immediate TX */ 2874 ret = ieee80211_start_roc_work(local, sdata, chan, 2875 wait, cookie, skb, 2876 IEEE80211_ROC_TYPE_MGMT_TX); 2877 if (ret) 2878 kfree_skb(skb); 2879 out_unlock: 2880 mutex_unlock(&local->mtx); 2881 return ret; 2882 } 2883 2884 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2885 struct wireless_dev *wdev, 2886 u64 cookie) 2887 { 2888 struct ieee80211_local *local = wiphy_priv(wiphy); 2889 2890 return ieee80211_cancel_roc(local, cookie, true); 2891 } 2892 2893 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2894 struct wireless_dev *wdev, 2895 u16 frame_type, bool reg) 2896 { 2897 struct ieee80211_local *local = wiphy_priv(wiphy); 2898 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2899 2900 switch (frame_type) { 2901 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH: 2902 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { 2903 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 2904 2905 if (reg) 2906 ifibss->auth_frame_registrations++; 2907 else 2908 ifibss->auth_frame_registrations--; 2909 } 2910 break; 2911 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 2912 if (reg) 2913 local->probe_req_reg++; 2914 else 2915 local->probe_req_reg--; 2916 2917 if (!local->open_count) 2918 break; 2919 2920 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2921 break; 2922 default: 2923 break; 2924 } 2925 } 2926 2927 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2928 { 2929 struct ieee80211_local *local = wiphy_priv(wiphy); 2930 2931 if (local->started) 2932 return -EOPNOTSUPP; 2933 2934 return drv_set_antenna(local, tx_ant, rx_ant); 2935 } 2936 2937 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2938 { 2939 struct ieee80211_local *local = wiphy_priv(wiphy); 2940 2941 return drv_get_antenna(local, tx_ant, rx_ant); 2942 } 2943 2944 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2945 { 2946 struct ieee80211_local *local = wiphy_priv(wiphy); 2947 2948 return drv_set_ringparam(local, tx, rx); 2949 } 2950 2951 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2952 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2953 { 2954 struct ieee80211_local *local = wiphy_priv(wiphy); 2955 2956 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2957 } 2958 2959 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2960 struct net_device *dev, 2961 struct cfg80211_gtk_rekey_data *data) 2962 { 2963 struct ieee80211_local *local = wiphy_priv(wiphy); 2964 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2965 2966 if (!local->ops->set_rekey_data) 2967 return -EOPNOTSUPP; 2968 2969 drv_set_rekey_data(local, sdata, data); 2970 2971 return 0; 2972 } 2973 2974 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2975 { 2976 u8 *pos = (void *)skb_put(skb, 7); 2977 2978 *pos++ = WLAN_EID_EXT_CAPABILITY; 2979 *pos++ = 5; /* len */ 2980 *pos++ = 0x0; 2981 *pos++ = 0x0; 2982 *pos++ = 0x0; 2983 *pos++ = 0x0; 2984 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2985 } 2986 2987 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2988 { 2989 struct ieee80211_local *local = sdata->local; 2990 u16 capab; 2991 2992 capab = 0; 2993 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) 2994 return capab; 2995 2996 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2997 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2998 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2999 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 3000 3001 return capab; 3002 } 3003 3004 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 3005 u8 *peer, u8 *bssid) 3006 { 3007 struct ieee80211_tdls_lnkie *lnkid; 3008 3009 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 3010 3011 lnkid->ie_type = WLAN_EID_LINK_ID; 3012 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 3013 3014 memcpy(lnkid->bssid, bssid, ETH_ALEN); 3015 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 3016 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 3017 } 3018 3019 static int 3020 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 3021 u8 *peer, u8 action_code, u8 dialog_token, 3022 u16 status_code, struct sk_buff *skb) 3023 { 3024 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3025 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3026 struct ieee80211_tdls_data *tf; 3027 3028 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 3029 3030 memcpy(tf->da, peer, ETH_ALEN); 3031 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 3032 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 3033 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 3034 3035 switch (action_code) { 3036 case WLAN_TDLS_SETUP_REQUEST: 3037 tf->category = WLAN_CATEGORY_TDLS; 3038 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 3039 3040 skb_put(skb, sizeof(tf->u.setup_req)); 3041 tf->u.setup_req.dialog_token = dialog_token; 3042 tf->u.setup_req.capability = 3043 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3044 3045 ieee80211_add_srates_ie(sdata, skb, false, band); 3046 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3047 ieee80211_tdls_add_ext_capab(skb); 3048 break; 3049 case WLAN_TDLS_SETUP_RESPONSE: 3050 tf->category = WLAN_CATEGORY_TDLS; 3051 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 3052 3053 skb_put(skb, sizeof(tf->u.setup_resp)); 3054 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 3055 tf->u.setup_resp.dialog_token = dialog_token; 3056 tf->u.setup_resp.capability = 3057 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3058 3059 ieee80211_add_srates_ie(sdata, skb, false, band); 3060 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3061 ieee80211_tdls_add_ext_capab(skb); 3062 break; 3063 case WLAN_TDLS_SETUP_CONFIRM: 3064 tf->category = WLAN_CATEGORY_TDLS; 3065 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 3066 3067 skb_put(skb, sizeof(tf->u.setup_cfm)); 3068 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 3069 tf->u.setup_cfm.dialog_token = dialog_token; 3070 break; 3071 case WLAN_TDLS_TEARDOWN: 3072 tf->category = WLAN_CATEGORY_TDLS; 3073 tf->action_code = WLAN_TDLS_TEARDOWN; 3074 3075 skb_put(skb, sizeof(tf->u.teardown)); 3076 tf->u.teardown.reason_code = cpu_to_le16(status_code); 3077 break; 3078 case WLAN_TDLS_DISCOVERY_REQUEST: 3079 tf->category = WLAN_CATEGORY_TDLS; 3080 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 3081 3082 skb_put(skb, sizeof(tf->u.discover_req)); 3083 tf->u.discover_req.dialog_token = dialog_token; 3084 break; 3085 default: 3086 return -EINVAL; 3087 } 3088 3089 return 0; 3090 } 3091 3092 static int 3093 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 3094 u8 *peer, u8 action_code, u8 dialog_token, 3095 u16 status_code, struct sk_buff *skb) 3096 { 3097 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3098 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 3099 struct ieee80211_mgmt *mgmt; 3100 3101 mgmt = (void *)skb_put(skb, 24); 3102 memset(mgmt, 0, 24); 3103 memcpy(mgmt->da, peer, ETH_ALEN); 3104 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3105 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 3106 3107 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3108 IEEE80211_STYPE_ACTION); 3109 3110 switch (action_code) { 3111 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3112 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 3113 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 3114 mgmt->u.action.u.tdls_discover_resp.action_code = 3115 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 3116 mgmt->u.action.u.tdls_discover_resp.dialog_token = 3117 dialog_token; 3118 mgmt->u.action.u.tdls_discover_resp.capability = 3119 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 3120 3121 ieee80211_add_srates_ie(sdata, skb, false, band); 3122 ieee80211_add_ext_srates_ie(sdata, skb, false, band); 3123 ieee80211_tdls_add_ext_capab(skb); 3124 break; 3125 default: 3126 return -EINVAL; 3127 } 3128 3129 return 0; 3130 } 3131 3132 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 3133 u8 *peer, u8 action_code, u8 dialog_token, 3134 u16 status_code, const u8 *extra_ies, 3135 size_t extra_ies_len) 3136 { 3137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3138 struct ieee80211_local *local = sdata->local; 3139 struct sk_buff *skb = NULL; 3140 bool send_direct; 3141 int ret; 3142 3143 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3144 return -ENOTSUPP; 3145 3146 /* make sure we are in managed mode, and associated */ 3147 if (sdata->vif.type != NL80211_IFTYPE_STATION || 3148 !sdata->u.mgd.associated) 3149 return -EINVAL; 3150 3151 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n", 3152 action_code, peer); 3153 3154 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 3155 max(sizeof(struct ieee80211_mgmt), 3156 sizeof(struct ieee80211_tdls_data)) + 3157 50 + /* supported rates */ 3158 7 + /* ext capab */ 3159 extra_ies_len + 3160 sizeof(struct ieee80211_tdls_lnkie)); 3161 if (!skb) 3162 return -ENOMEM; 3163 3164 skb_reserve(skb, local->hw.extra_tx_headroom); 3165 3166 switch (action_code) { 3167 case WLAN_TDLS_SETUP_REQUEST: 3168 case WLAN_TDLS_SETUP_RESPONSE: 3169 case WLAN_TDLS_SETUP_CONFIRM: 3170 case WLAN_TDLS_TEARDOWN: 3171 case WLAN_TDLS_DISCOVERY_REQUEST: 3172 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 3173 action_code, dialog_token, 3174 status_code, skb); 3175 send_direct = false; 3176 break; 3177 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3178 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 3179 dialog_token, status_code, 3180 skb); 3181 send_direct = true; 3182 break; 3183 default: 3184 ret = -ENOTSUPP; 3185 break; 3186 } 3187 3188 if (ret < 0) 3189 goto fail; 3190 3191 if (extra_ies_len) 3192 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 3193 3194 /* the TDLS link IE is always added last */ 3195 switch (action_code) { 3196 case WLAN_TDLS_SETUP_REQUEST: 3197 case WLAN_TDLS_SETUP_CONFIRM: 3198 case WLAN_TDLS_TEARDOWN: 3199 case WLAN_TDLS_DISCOVERY_REQUEST: 3200 /* we are the initiator */ 3201 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 3202 sdata->u.mgd.bssid); 3203 break; 3204 case WLAN_TDLS_SETUP_RESPONSE: 3205 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 3206 /* we are the responder */ 3207 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 3208 sdata->u.mgd.bssid); 3209 break; 3210 default: 3211 ret = -ENOTSUPP; 3212 goto fail; 3213 } 3214 3215 if (send_direct) { 3216 ieee80211_tx_skb(sdata, skb); 3217 return 0; 3218 } 3219 3220 /* 3221 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 3222 * we should default to AC_VI. 3223 */ 3224 switch (action_code) { 3225 case WLAN_TDLS_SETUP_REQUEST: 3226 case WLAN_TDLS_SETUP_RESPONSE: 3227 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 3228 skb->priority = 2; 3229 break; 3230 default: 3231 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 3232 skb->priority = 5; 3233 break; 3234 } 3235 3236 /* disable bottom halves when entering the Tx path */ 3237 local_bh_disable(); 3238 ret = ieee80211_subif_start_xmit(skb, dev); 3239 local_bh_enable(); 3240 3241 return ret; 3242 3243 fail: 3244 dev_kfree_skb(skb); 3245 return ret; 3246 } 3247 3248 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 3249 u8 *peer, enum nl80211_tdls_operation oper) 3250 { 3251 struct sta_info *sta; 3252 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3253 3254 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 3255 return -ENOTSUPP; 3256 3257 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3258 return -EINVAL; 3259 3260 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); 3261 3262 switch (oper) { 3263 case NL80211_TDLS_ENABLE_LINK: 3264 rcu_read_lock(); 3265 sta = sta_info_get(sdata, peer); 3266 if (!sta) { 3267 rcu_read_unlock(); 3268 return -ENOLINK; 3269 } 3270 3271 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 3272 rcu_read_unlock(); 3273 break; 3274 case NL80211_TDLS_DISABLE_LINK: 3275 return sta_info_destroy_addr(sdata, peer); 3276 case NL80211_TDLS_TEARDOWN: 3277 case NL80211_TDLS_SETUP: 3278 case NL80211_TDLS_DISCOVERY_REQ: 3279 /* We don't support in-driver setup/teardown/discovery */ 3280 return -ENOTSUPP; 3281 default: 3282 return -ENOTSUPP; 3283 } 3284 3285 return 0; 3286 } 3287 3288 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3289 const u8 *peer, u64 *cookie) 3290 { 3291 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3292 struct ieee80211_local *local = sdata->local; 3293 struct ieee80211_qos_hdr *nullfunc; 3294 struct sk_buff *skb; 3295 int size = sizeof(*nullfunc); 3296 __le16 fc; 3297 bool qos; 3298 struct ieee80211_tx_info *info; 3299 struct sta_info *sta; 3300 struct ieee80211_chanctx_conf *chanctx_conf; 3301 enum ieee80211_band band; 3302 3303 rcu_read_lock(); 3304 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3305 if (WARN_ON(!chanctx_conf)) { 3306 rcu_read_unlock(); 3307 return -EINVAL; 3308 } 3309 band = chanctx_conf->def.chan->band; 3310 sta = sta_info_get(sdata, peer); 3311 if (sta) { 3312 qos = test_sta_flag(sta, WLAN_STA_WME); 3313 } else { 3314 rcu_read_unlock(); 3315 return -ENOLINK; 3316 } 3317 3318 if (qos) { 3319 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3320 IEEE80211_STYPE_QOS_NULLFUNC | 3321 IEEE80211_FCTL_FROMDS); 3322 } else { 3323 size -= 2; 3324 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3325 IEEE80211_STYPE_NULLFUNC | 3326 IEEE80211_FCTL_FROMDS); 3327 } 3328 3329 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3330 if (!skb) { 3331 rcu_read_unlock(); 3332 return -ENOMEM; 3333 } 3334 3335 skb->dev = dev; 3336 3337 skb_reserve(skb, local->hw.extra_tx_headroom); 3338 3339 nullfunc = (void *) skb_put(skb, size); 3340 nullfunc->frame_control = fc; 3341 nullfunc->duration_id = 0; 3342 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3343 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3344 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3345 nullfunc->seq_ctrl = 0; 3346 3347 info = IEEE80211_SKB_CB(skb); 3348 3349 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3350 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3351 3352 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3353 skb->priority = 7; 3354 if (qos) 3355 nullfunc->qos_ctrl = cpu_to_le16(7); 3356 3357 local_bh_disable(); 3358 ieee80211_xmit(sdata, skb, band); 3359 local_bh_enable(); 3360 rcu_read_unlock(); 3361 3362 *cookie = (unsigned long) skb; 3363 return 0; 3364 } 3365 3366 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3367 struct wireless_dev *wdev, 3368 struct cfg80211_chan_def *chandef) 3369 { 3370 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3371 struct ieee80211_local *local = wiphy_priv(wiphy); 3372 struct ieee80211_chanctx_conf *chanctx_conf; 3373 int ret = -ENODATA; 3374 3375 rcu_read_lock(); 3376 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3377 if (chanctx_conf) { 3378 *chandef = chanctx_conf->def; 3379 ret = 0; 3380 } else if (local->open_count > 0 && 3381 local->open_count == local->monitors && 3382 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3383 if (local->use_chanctx) 3384 *chandef = local->monitor_chandef; 3385 else 3386 *chandef = local->_oper_chandef; 3387 ret = 0; 3388 } 3389 rcu_read_unlock(); 3390 3391 return ret; 3392 } 3393 3394 #ifdef CONFIG_PM 3395 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3396 { 3397 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3398 } 3399 #endif 3400 3401 struct cfg80211_ops mac80211_config_ops = { 3402 .add_virtual_intf = ieee80211_add_iface, 3403 .del_virtual_intf = ieee80211_del_iface, 3404 .change_virtual_intf = ieee80211_change_iface, 3405 .start_p2p_device = ieee80211_start_p2p_device, 3406 .stop_p2p_device = ieee80211_stop_p2p_device, 3407 .add_key = ieee80211_add_key, 3408 .del_key = ieee80211_del_key, 3409 .get_key = ieee80211_get_key, 3410 .set_default_key = ieee80211_config_default_key, 3411 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3412 .start_ap = ieee80211_start_ap, 3413 .change_beacon = ieee80211_change_beacon, 3414 .stop_ap = ieee80211_stop_ap, 3415 .add_station = ieee80211_add_station, 3416 .del_station = ieee80211_del_station, 3417 .change_station = ieee80211_change_station, 3418 .get_station = ieee80211_get_station, 3419 .dump_station = ieee80211_dump_station, 3420 .dump_survey = ieee80211_dump_survey, 3421 #ifdef CONFIG_MAC80211_MESH 3422 .add_mpath = ieee80211_add_mpath, 3423 .del_mpath = ieee80211_del_mpath, 3424 .change_mpath = ieee80211_change_mpath, 3425 .get_mpath = ieee80211_get_mpath, 3426 .dump_mpath = ieee80211_dump_mpath, 3427 .update_mesh_config = ieee80211_update_mesh_config, 3428 .get_mesh_config = ieee80211_get_mesh_config, 3429 .join_mesh = ieee80211_join_mesh, 3430 .leave_mesh = ieee80211_leave_mesh, 3431 #endif 3432 .change_bss = ieee80211_change_bss, 3433 .set_txq_params = ieee80211_set_txq_params, 3434 .set_monitor_channel = ieee80211_set_monitor_channel, 3435 .suspend = ieee80211_suspend, 3436 .resume = ieee80211_resume, 3437 .scan = ieee80211_scan, 3438 .sched_scan_start = ieee80211_sched_scan_start, 3439 .sched_scan_stop = ieee80211_sched_scan_stop, 3440 .auth = ieee80211_auth, 3441 .assoc = ieee80211_assoc, 3442 .deauth = ieee80211_deauth, 3443 .disassoc = ieee80211_disassoc, 3444 .join_ibss = ieee80211_join_ibss, 3445 .leave_ibss = ieee80211_leave_ibss, 3446 .set_mcast_rate = ieee80211_set_mcast_rate, 3447 .set_wiphy_params = ieee80211_set_wiphy_params, 3448 .set_tx_power = ieee80211_set_tx_power, 3449 .get_tx_power = ieee80211_get_tx_power, 3450 .set_wds_peer = ieee80211_set_wds_peer, 3451 .rfkill_poll = ieee80211_rfkill_poll, 3452 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3453 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3454 .set_power_mgmt = ieee80211_set_power_mgmt, 3455 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3456 .remain_on_channel = ieee80211_remain_on_channel, 3457 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3458 .mgmt_tx = ieee80211_mgmt_tx, 3459 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3460 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3461 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3462 .set_antenna = ieee80211_set_antenna, 3463 .get_antenna = ieee80211_get_antenna, 3464 .set_ringparam = ieee80211_set_ringparam, 3465 .get_ringparam = ieee80211_get_ringparam, 3466 .set_rekey_data = ieee80211_set_rekey_data, 3467 .tdls_oper = ieee80211_tdls_oper, 3468 .tdls_mgmt = ieee80211_tdls_mgmt, 3469 .probe_client = ieee80211_probe_client, 3470 .set_noack_map = ieee80211_set_noack_map, 3471 #ifdef CONFIG_PM 3472 .set_wakeup = ieee80211_set_wakeup, 3473 #endif 3474 .get_et_sset_count = ieee80211_get_et_sset_count, 3475 .get_et_stats = ieee80211_get_et_stats, 3476 .get_et_strings = ieee80211_get_et_strings, 3477 .get_channel = ieee80211_cfg_get_channel, 3478 .start_radar_detection = ieee80211_start_radar_detection, 3479 }; 3480