1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/crc32.h> 9 #include <net/mac80211.h> 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "fw-api.h" 13 #include "mvm.h" 14 #include "time-event.h" 15 16 const u8 iwl_mvm_ac_to_tx_fifo[] = { 17 IWL_MVM_TX_FIFO_VO, 18 IWL_MVM_TX_FIFO_VI, 19 IWL_MVM_TX_FIFO_BE, 20 IWL_MVM_TX_FIFO_BK, 21 }; 22 23 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 24 IWL_GEN2_EDCA_TX_FIFO_VO, 25 IWL_GEN2_EDCA_TX_FIFO_VI, 26 IWL_GEN2_EDCA_TX_FIFO_BE, 27 IWL_GEN2_EDCA_TX_FIFO_BK, 28 IWL_GEN2_TRIG_TX_FIFO_VO, 29 IWL_GEN2_TRIG_TX_FIFO_VI, 30 IWL_GEN2_TRIG_TX_FIFO_BE, 31 IWL_GEN2_TRIG_TX_FIFO_BK, 32 }; 33 34 struct iwl_mvm_mac_iface_iterator_data { 35 struct iwl_mvm *mvm; 36 struct ieee80211_vif *vif; 37 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 38 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 39 enum iwl_tsf_id preferred_tsf; 40 bool found_vif; 41 }; 42 43 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 44 struct ieee80211_vif *vif) 45 { 46 struct iwl_mvm_mac_iface_iterator_data *data = _data; 47 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 48 u16 min_bi; 49 50 /* Skip the interface for which we are trying to assign a tsf_id */ 51 if (vif == data->vif) 52 return; 53 54 /* 55 * The TSF is a hardware/firmware resource, there are 4 and 56 * the driver should assign and free them as needed. However, 57 * there are cases where 2 MACs should share the same TSF ID 58 * for the purpose of clock sync, an optimization to avoid 59 * clock drift causing overlapping TBTTs/DTIMs for a GO and 60 * client in the system. 61 * 62 * The firmware will decide according to the MAC type which 63 * will be the leader and follower. Clients that need to sync 64 * with a remote station will be the leader, and an AP or GO 65 * will be the follower. 66 * 67 * Depending on the new interface type it can be following 68 * or become the leader of an existing interface. 69 */ 70 switch (data->vif->type) { 71 case NL80211_IFTYPE_STATION: 72 /* 73 * The new interface is a client, so if the one we're iterating 74 * is an AP, and the beacon interval of the AP is a multiple or 75 * divisor of the beacon interval of the client, the same TSF 76 * should be used to avoid drift between the new client and 77 * existing AP. The existing AP will get drift updates from the 78 * new client context in this case. 79 */ 80 if (vif->type != NL80211_IFTYPE_AP || 81 data->preferred_tsf != NUM_TSF_IDS || 82 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 83 break; 84 85 min_bi = min(data->vif->bss_conf.beacon_int, 86 vif->bss_conf.beacon_int); 87 88 if (!min_bi) 89 break; 90 91 if ((data->vif->bss_conf.beacon_int - 92 vif->bss_conf.beacon_int) % min_bi == 0) { 93 data->preferred_tsf = mvmvif->tsf_id; 94 return; 95 } 96 break; 97 98 case NL80211_IFTYPE_AP: 99 /* 100 * The new interface is AP/GO, so if its beacon interval is a 101 * multiple or a divisor of the beacon interval of an existing 102 * interface, it should get drift updates from an existing 103 * client or use the same TSF as an existing GO. There's no 104 * drift between TSFs internally but if they used different 105 * TSFs then a new client MAC could update one of them and 106 * cause drift that way. 107 */ 108 if ((vif->type != NL80211_IFTYPE_AP && 109 vif->type != NL80211_IFTYPE_STATION) || 110 data->preferred_tsf != NUM_TSF_IDS || 111 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 112 break; 113 114 min_bi = min(data->vif->bss_conf.beacon_int, 115 vif->bss_conf.beacon_int); 116 117 if (!min_bi) 118 break; 119 120 if ((data->vif->bss_conf.beacon_int - 121 vif->bss_conf.beacon_int) % min_bi == 0) { 122 data->preferred_tsf = mvmvif->tsf_id; 123 return; 124 } 125 break; 126 default: 127 /* 128 * For all other interface types there's no need to 129 * take drift into account. Either they're exclusive 130 * like IBSS and monitor, or we don't care much about 131 * their TSF (like P2P Device), but we won't be able 132 * to share the TSF resource. 133 */ 134 break; 135 } 136 137 /* 138 * Unless we exited above, we can't share the TSF resource 139 * that the virtual interface we're iterating over is using 140 * with the new one, so clear the available bit and if this 141 * was the preferred one, reset that as well. 142 */ 143 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 144 145 if (data->preferred_tsf == mvmvif->tsf_id) 146 data->preferred_tsf = NUM_TSF_IDS; 147 } 148 149 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 150 struct ieee80211_vif *vif) 151 { 152 struct iwl_mvm_mac_iface_iterator_data *data = _data; 153 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 154 155 /* Iterator may already find the interface being added -- skip it */ 156 if (vif == data->vif) { 157 data->found_vif = true; 158 return; 159 } 160 161 /* Mark MAC IDs as used by clearing the available bit, and 162 * (below) mark TSFs as used if their existing use is not 163 * compatible with the new interface type. 164 * No locking or atomic bit operations are needed since the 165 * data is on the stack of the caller function. 166 */ 167 __clear_bit(mvmvif->id, data->available_mac_ids); 168 169 /* find a suitable tsf_id */ 170 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 171 } 172 173 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 174 struct ieee80211_vif *vif) 175 { 176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 177 struct iwl_mvm_mac_iface_iterator_data data = { 178 .mvm = mvm, 179 .vif = vif, 180 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 181 /* no preference yet */ 182 .preferred_tsf = NUM_TSF_IDS, 183 }; 184 185 ieee80211_iterate_active_interfaces_atomic( 186 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 187 iwl_mvm_mac_tsf_id_iter, &data); 188 189 if (data.preferred_tsf != NUM_TSF_IDS) 190 mvmvif->tsf_id = data.preferred_tsf; 191 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 192 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 193 NUM_TSF_IDS); 194 } 195 196 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 197 { 198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 199 struct iwl_mvm_mac_iface_iterator_data data = { 200 .mvm = mvm, 201 .vif = vif, 202 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 203 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 204 /* no preference yet */ 205 .preferred_tsf = NUM_TSF_IDS, 206 .found_vif = false, 207 }; 208 int ret, i; 209 210 lockdep_assert_held(&mvm->mutex); 211 212 /* 213 * Allocate a MAC ID and a TSF for this MAC, along with the queues 214 * and other resources. 215 */ 216 217 /* 218 * Before the iterator, we start with all MAC IDs and TSFs available. 219 * 220 * During iteration, all MAC IDs are cleared that are in use by other 221 * virtual interfaces, and all TSF IDs are cleared that can't be used 222 * by this new virtual interface because they're used by an interface 223 * that can't share it with the new one. 224 * At the same time, we check if there's a preferred TSF in the case 225 * that we should share it with another interface. 226 */ 227 228 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 229 switch (vif->type) { 230 case NL80211_IFTYPE_ADHOC: 231 break; 232 case NL80211_IFTYPE_STATION: 233 if (!vif->p2p) 234 break; 235 fallthrough; 236 default: 237 __clear_bit(0, data.available_mac_ids); 238 } 239 240 ieee80211_iterate_active_interfaces_atomic( 241 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 242 iwl_mvm_mac_iface_iterator, &data); 243 244 /* 245 * In the case we're getting here during resume, it's similar to 246 * firmware restart, and with RESUME_ALL the iterator will find 247 * the vif being added already. 248 * We don't want to reassign any IDs in either case since doing 249 * so would probably assign different IDs (as interfaces aren't 250 * necessarily added in the same order), but the old IDs were 251 * preserved anyway, so skip ID assignment for both resume and 252 * recovery. 253 */ 254 if (data.found_vif) 255 return 0; 256 257 /* Therefore, in recovery, we can't get here */ 258 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 259 return -EBUSY; 260 261 mvmvif->id = find_first_bit(data.available_mac_ids, 262 NUM_MAC_INDEX_DRIVER); 263 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 264 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 265 ret = -EIO; 266 goto exit_fail; 267 } 268 269 if (data.preferred_tsf != NUM_TSF_IDS) 270 mvmvif->tsf_id = data.preferred_tsf; 271 else 272 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 273 NUM_TSF_IDS); 274 if (mvmvif->tsf_id == NUM_TSF_IDS) { 275 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 276 ret = -EIO; 277 goto exit_fail; 278 } 279 280 mvmvif->color = 0; 281 282 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 283 mvmvif->time_event_data.id = TE_MAX; 284 285 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 286 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 287 return 0; 288 289 /* Allocate the CAB queue for softAP and GO interfaces */ 290 if (vif->type == NL80211_IFTYPE_AP || 291 vif->type == NL80211_IFTYPE_ADHOC) { 292 /* 293 * For TVQM this will be overwritten later with the FW assigned 294 * queue value (when queue is enabled). 295 */ 296 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 297 } 298 299 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; 300 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; 301 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 302 303 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 304 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 305 306 return 0; 307 308 exit_fail: 309 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 310 return ret; 311 } 312 313 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 314 struct ieee80211_vif *vif, 315 enum nl80211_band band, 316 u8 *cck_rates, u8 *ofdm_rates) 317 { 318 struct ieee80211_supported_band *sband; 319 unsigned long basic = vif->bss_conf.basic_rates; 320 int lowest_present_ofdm = 100; 321 int lowest_present_cck = 100; 322 u8 cck = 0; 323 u8 ofdm = 0; 324 int i; 325 326 sband = mvm->hw->wiphy->bands[band]; 327 328 for_each_set_bit(i, &basic, BITS_PER_LONG) { 329 int hw = sband->bitrates[i].hw_value; 330 if (hw >= IWL_FIRST_OFDM_RATE) { 331 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 332 if (lowest_present_ofdm > hw) 333 lowest_present_ofdm = hw; 334 } else { 335 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 336 337 cck |= BIT(hw); 338 if (lowest_present_cck > hw) 339 lowest_present_cck = hw; 340 } 341 } 342 343 /* 344 * Now we've got the basic rates as bitmaps in the ofdm and cck 345 * variables. This isn't sufficient though, as there might not 346 * be all the right rates in the bitmap. E.g. if the only basic 347 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 348 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 349 * 350 * [...] a STA responding to a received frame shall transmit 351 * its Control Response frame [...] at the highest rate in the 352 * BSSBasicRateSet parameter that is less than or equal to the 353 * rate of the immediately previous frame in the frame exchange 354 * sequence ([...]) and that is of the same modulation class 355 * ([...]) as the received frame. If no rate contained in the 356 * BSSBasicRateSet parameter meets these conditions, then the 357 * control frame sent in response to a received frame shall be 358 * transmitted at the highest mandatory rate of the PHY that is 359 * less than or equal to the rate of the received frame, and 360 * that is of the same modulation class as the received frame. 361 * 362 * As a consequence, we need to add all mandatory rates that are 363 * lower than all of the basic rates to these bitmaps. 364 */ 365 366 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 367 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 368 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 369 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 370 /* 6M already there or needed so always add */ 371 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 372 373 /* 374 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 375 * Note, however: 376 * - if no CCK rates are basic, it must be ERP since there must 377 * be some basic rates at all, so they're OFDM => ERP PHY 378 * (or we're in 5 GHz, and the cck bitmap will never be used) 379 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 380 * - if 5.5M is basic, 1M and 2M are mandatory 381 * - if 2M is basic, 1M is mandatory 382 * - if 1M is basic, that's the only valid ACK rate. 383 * As a consequence, it's not as complicated as it sounds, just add 384 * any lower rates to the ACK rate bitmap. 385 */ 386 if (IWL_RATE_11M_INDEX < lowest_present_cck) 387 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 388 if (IWL_RATE_5M_INDEX < lowest_present_cck) 389 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 390 if (IWL_RATE_2M_INDEX < lowest_present_cck) 391 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 392 /* 1M already there or needed so always add */ 393 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 394 395 *cck_rates = cck; 396 *ofdm_rates = ofdm; 397 } 398 399 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 400 struct ieee80211_vif *vif, 401 struct iwl_mac_ctx_cmd *cmd) 402 { 403 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 404 u8 protection_mode = vif->bss_conf.ht_operation_mode & 405 IEEE80211_HT_OP_MODE_PROTECTION; 406 /* The fw does not distinguish between ht and fat */ 407 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 408 409 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 410 /* 411 * See section 9.23.3.1 of IEEE 80211-2012. 412 * Nongreenfield HT STAs Present is not supported. 413 */ 414 switch (protection_mode) { 415 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 416 break; 417 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 418 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 419 cmd->protection_flags |= cpu_to_le32(ht_flag); 420 break; 421 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 422 /* Protect when channel wider than 20MHz */ 423 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 424 cmd->protection_flags |= cpu_to_le32(ht_flag); 425 break; 426 default: 427 IWL_ERR(mvm, "Illegal protection mode %d\n", 428 protection_mode); 429 break; 430 } 431 } 432 433 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 434 struct ieee80211_vif *vif, 435 struct iwl_mac_ctx_cmd *cmd, 436 const u8 *bssid_override, 437 u32 action) 438 { 439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 440 struct ieee80211_chanctx_conf *chanctx; 441 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 442 IEEE80211_HT_OP_MODE_PROTECTION); 443 u8 cck_ack_rates, ofdm_ack_rates; 444 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 445 int i; 446 447 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 448 mvmvif->color)); 449 cmd->action = cpu_to_le32(action); 450 451 switch (vif->type) { 452 case NL80211_IFTYPE_STATION: 453 if (vif->p2p) 454 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 455 else 456 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 457 break; 458 case NL80211_IFTYPE_AP: 459 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 460 break; 461 case NL80211_IFTYPE_MONITOR: 462 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 463 break; 464 case NL80211_IFTYPE_P2P_DEVICE: 465 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 466 break; 467 case NL80211_IFTYPE_ADHOC: 468 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 469 break; 470 default: 471 WARN_ON_ONCE(1); 472 } 473 474 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 475 476 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 477 478 if (bssid) 479 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 480 else 481 eth_broadcast_addr(cmd->bssid_addr); 482 483 rcu_read_lock(); 484 chanctx = rcu_dereference(vif->bss_conf.chanctx_conf); 485 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 486 : NL80211_BAND_2GHZ, 487 &cck_ack_rates, &ofdm_ack_rates); 488 rcu_read_unlock(); 489 490 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 491 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 492 493 cmd->cck_short_preamble = 494 cpu_to_le32(vif->bss_conf.use_short_preamble ? 495 MAC_FLG_SHORT_PREAMBLE : 0); 496 cmd->short_slot = 497 cpu_to_le32(vif->bss_conf.use_short_slot ? 498 MAC_FLG_SHORT_SLOT : 0); 499 500 cmd->filter_flags = 0; 501 502 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 503 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 504 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 505 506 cmd->ac[ucode_ac].cw_min = 507 cpu_to_le16(mvmvif->queue_params[i].cw_min); 508 cmd->ac[ucode_ac].cw_max = 509 cpu_to_le16(mvmvif->queue_params[i].cw_max); 510 cmd->ac[ucode_ac].edca_txop = 511 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 512 cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs; 513 cmd->ac[ucode_ac].fifos_mask = BIT(txf); 514 } 515 516 if (vif->bss_conf.qos) 517 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 518 519 if (vif->bss_conf.use_cts_prot) 520 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 521 522 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 523 vif->bss_conf.use_cts_prot, 524 vif->bss_conf.ht_operation_mode); 525 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 526 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 527 if (ht_enabled) 528 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 529 } 530 531 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 532 struct iwl_mac_ctx_cmd *cmd) 533 { 534 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 535 sizeof(*cmd), cmd); 536 if (ret) 537 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 538 le32_to_cpu(cmd->action), ret); 539 return ret; 540 } 541 542 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 543 struct ieee80211_vif *vif, 544 u32 action, bool force_assoc_off, 545 const u8 *bssid_override) 546 { 547 struct iwl_mac_ctx_cmd cmd = {}; 548 struct iwl_mac_data_sta *ctxt_sta; 549 550 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 551 552 /* Fill the common data for all mac context types */ 553 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 554 555 /* 556 * We always want to hear MCAST frames, if we're not authorized yet, 557 * we'll drop them. 558 */ 559 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 560 561 if (vif->p2p) { 562 struct ieee80211_p2p_noa_attr *noa = 563 &vif->bss_conf.p2p_noa_attr; 564 565 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 566 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 567 ctxt_sta = &cmd.p2p_sta.sta; 568 } else { 569 ctxt_sta = &cmd.sta; 570 } 571 572 /* We need the dtim_period to set the MAC as associated */ 573 if (vif->cfg.assoc && vif->bss_conf.dtim_period && 574 !force_assoc_off) { 575 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 576 u32 dtim_offs; 577 578 /* 579 * The DTIM count counts down, so when it is N that means N 580 * more beacon intervals happen until the DTIM TBTT. Therefore 581 * add this to the current time. If that ends up being in the 582 * future, the firmware will handle it. 583 * 584 * Also note that the system_timestamp (which we get here as 585 * "sync_device_ts") and TSF timestamp aren't at exactly the 586 * same offset in the frame -- the TSF is at the first symbol 587 * of the TSF, the system timestamp is at signal acquisition 588 * time. This means there's an offset between them of at most 589 * a few hundred microseconds (24 * 8 bits + PLCP time gives 590 * 384us in the longest case), this is currently not relevant 591 * as the firmware wakes up around 2ms before the TBTT. 592 */ 593 dtim_offs = vif->bss_conf.sync_dtim_count * 594 vif->bss_conf.beacon_int; 595 /* convert TU to usecs */ 596 dtim_offs *= 1024; 597 598 ctxt_sta->dtim_tsf = 599 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 600 ctxt_sta->dtim_time = 601 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 602 ctxt_sta->assoc_beacon_arrive_time = 603 cpu_to_le32(vif->bss_conf.sync_device_ts); 604 605 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 606 le64_to_cpu(ctxt_sta->dtim_tsf), 607 le32_to_cpu(ctxt_sta->dtim_time), 608 dtim_offs); 609 610 ctxt_sta->is_assoc = cpu_to_le32(1); 611 612 if (!mvmvif->authorized && 613 fw_has_capa(&mvm->fw->ucode_capa, 614 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO)) 615 ctxt_sta->data_policy |= 616 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE); 617 } else { 618 ctxt_sta->is_assoc = cpu_to_le32(0); 619 620 /* Allow beacons to pass through as long as we are not 621 * associated, or we do not have dtim period information. 622 */ 623 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 624 } 625 626 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 627 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 628 vif->bss_conf.dtim_period); 629 630 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 631 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid); 632 633 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p) 634 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 635 636 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 637 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 638 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) 639 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED); 640 if (vif->bss_conf.twt_protected) 641 ctxt_sta->data_policy |= 642 cpu_to_le32(PROTECTED_TWT_SUPPORTED); 643 if (vif->bss_conf.twt_broadcast) 644 ctxt_sta->data_policy |= 645 cpu_to_le32(BROADCAST_TWT_SUPPORTED); 646 } 647 648 649 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 650 } 651 652 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 653 struct ieee80211_vif *vif, 654 u32 action) 655 { 656 struct iwl_mac_ctx_cmd cmd = {}; 657 u32 tfd_queue_msk = BIT(mvm->snif_queue); 658 int ret; 659 660 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 661 662 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 663 664 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 665 MAC_FILTER_IN_CONTROL_AND_MGMT | 666 MAC_FILTER_IN_BEACON | 667 MAC_FILTER_IN_PROBE_REQUEST | 668 MAC_FILTER_IN_CRC32 | 669 MAC_FILTER_ACCEPT_GRP); 670 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 671 672 /* Allocate sniffer station */ 673 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 674 vif->type, IWL_STA_GENERAL_PURPOSE); 675 if (ret) 676 return ret; 677 678 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 679 } 680 681 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 682 struct ieee80211_vif *vif, 683 u32 action) 684 { 685 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 686 struct iwl_mac_ctx_cmd cmd = {}; 687 688 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 689 690 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 691 692 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 693 MAC_FILTER_IN_PROBE_REQUEST | 694 MAC_FILTER_ACCEPT_GRP); 695 696 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 697 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 698 699 /* TODO: Assumes that the beacon id == mac context id */ 700 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 701 702 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 703 } 704 705 struct iwl_mvm_go_iterator_data { 706 bool go_active; 707 }; 708 709 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 710 { 711 struct iwl_mvm_go_iterator_data *data = _data; 712 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 713 714 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 715 mvmvif->ap_ibss_active) 716 data->go_active = true; 717 } 718 719 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 720 struct ieee80211_vif *vif, 721 u32 action) 722 { 723 struct iwl_mac_ctx_cmd cmd = {}; 724 struct iwl_mvm_go_iterator_data data = {}; 725 726 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 727 728 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 729 730 /* Override the filter flags to accept only probe requests */ 731 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 732 733 /* 734 * This flag should be set to true when the P2P Device is 735 * discoverable and there is at least another active P2P GO. Settings 736 * this flag will allow the P2P Device to be discoverable on other 737 * channels in addition to its listen channel. 738 * Note that this flag should not be set in other cases as it opens the 739 * Rx filters on all MAC and increases the number of interrupts. 740 */ 741 ieee80211_iterate_active_interfaces_atomic( 742 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 743 iwl_mvm_go_iterator, &data); 744 745 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); 746 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 747 } 748 749 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 750 __le32 *tim_index, __le32 *tim_size, 751 u8 *beacon, u32 frame_size) 752 { 753 u32 tim_idx; 754 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 755 756 /* The index is relative to frame start but we start looking at the 757 * variable-length part of the beacon. */ 758 tim_idx = mgmt->u.beacon.variable - beacon; 759 760 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 761 while ((tim_idx < (frame_size - 2)) && 762 (beacon[tim_idx] != WLAN_EID_TIM)) 763 tim_idx += beacon[tim_idx+1] + 2; 764 765 /* If TIM field was found, set variables */ 766 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 767 *tim_index = cpu_to_le32(tim_idx); 768 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 769 } else { 770 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 771 } 772 } 773 774 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 775 { 776 struct ieee80211_mgmt *mgmt = (void *)beacon; 777 const u8 *ie; 778 779 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 780 return 0; 781 782 frame_size -= mgmt->u.beacon.variable - beacon; 783 784 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 785 if (!ie) 786 return 0; 787 788 return ie - beacon; 789 } 790 791 static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, 792 struct ieee80211_tx_info *info, 793 struct ieee80211_vif *vif) 794 { 795 struct ieee80211_supported_band *sband; 796 unsigned long basic = vif->bss_conf.basic_rates; 797 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT; 798 u8 rate; 799 u32 i; 800 801 sband = mvm->hw->wiphy->bands[info->band]; 802 for_each_set_bit(i, &basic, BITS_PER_LONG) { 803 u16 hw = sband->bitrates[i].hw_value; 804 805 if (hw >= IWL_FIRST_OFDM_RATE) { 806 if (lowest_ofdm > hw) 807 lowest_ofdm = hw; 808 } else if (lowest_cck > hw) { 809 lowest_cck = hw; 810 } 811 } 812 813 if (info->band == NL80211_BAND_2GHZ && !vif->p2p) { 814 if (lowest_cck != IWL_RATE_COUNT) 815 rate = lowest_cck; 816 else if (lowest_ofdm != IWL_RATE_COUNT) 817 rate = lowest_ofdm; 818 else 819 rate = IWL_RATE_1M_INDEX; 820 } else if (lowest_ofdm != IWL_RATE_COUNT) { 821 rate = lowest_ofdm; 822 } else { 823 rate = IWL_RATE_6M_INDEX; 824 } 825 826 return rate; 827 } 828 829 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx) 830 { 831 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx); 832 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10; 833 834 if (rate_idx <= IWL_FIRST_CCK_RATE) 835 flags |= is_new_rate ? IWL_MAC_BEACON_CCK 836 : IWL_MAC_BEACON_CCK_V1; 837 838 return flags; 839 } 840 841 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm, 842 struct ieee80211_tx_info *info, 843 struct ieee80211_vif *vif) 844 { 845 struct ieee80211_supported_band *sband = 846 mvm->hw->wiphy->bands[info->band]; 847 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy; 848 849 /* if beacon rate was configured try using it */ 850 if (hweight32(legacy) == 1) { 851 u32 rate = ffs(legacy) - 1; 852 853 return sband->bitrates[rate].hw_value; 854 } 855 856 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif); 857 } 858 859 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 860 struct ieee80211_vif *vif, 861 struct sk_buff *beacon, 862 struct iwl_tx_cmd *tx) 863 { 864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 865 struct ieee80211_tx_info *info; 866 u8 rate; 867 u32 tx_flags; 868 869 info = IEEE80211_SKB_CB(beacon); 870 871 /* Set up TX command fields */ 872 tx->len = cpu_to_le16((u16)beacon->len); 873 tx->sta_id = mvmvif->bcast_sta.sta_id; 874 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 875 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 876 tx_flags |= 877 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 878 TX_CMD_FLG_BT_PRIO_POS; 879 tx->tx_flags = cpu_to_le32(tx_flags); 880 881 if (!fw_has_capa(&mvm->fw->ucode_capa, 882 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 883 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 884 885 tx->rate_n_flags = 886 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 887 RATE_MCS_ANT_POS); 888 889 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 890 891 tx->rate_n_flags |= 892 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate)); 893 if (rate == IWL_FIRST_CCK_RATE) 894 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1); 895 896 } 897 898 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 899 struct sk_buff *beacon, 900 void *data, int len) 901 { 902 struct iwl_host_cmd cmd = { 903 .id = BEACON_TEMPLATE_CMD, 904 .flags = CMD_ASYNC, 905 }; 906 907 cmd.len[0] = len; 908 cmd.data[0] = data; 909 cmd.dataflags[0] = 0; 910 cmd.len[1] = beacon->len; 911 cmd.data[1] = beacon->data; 912 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 913 914 return iwl_mvm_send_cmd(mvm, &cmd); 915 } 916 917 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 918 struct ieee80211_vif *vif, 919 struct sk_buff *beacon) 920 { 921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 922 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 923 924 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 925 926 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 927 928 if (vif->type == NL80211_IFTYPE_AP) 929 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 930 &beacon_cmd.tim_size, 931 beacon->data, beacon->len); 932 933 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 934 sizeof(beacon_cmd)); 935 } 936 937 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 938 struct ieee80211_vif *vif, 939 struct sk_buff *beacon) 940 { 941 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 942 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 943 944 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 945 946 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 947 948 if (vif->type == NL80211_IFTYPE_AP) 949 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 950 &beacon_cmd.tim_size, 951 beacon->data, beacon->len); 952 953 beacon_cmd.csa_offset = 954 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 955 WLAN_EID_CHANNEL_SWITCH, 956 beacon->len)); 957 beacon_cmd.ecsa_offset = 958 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 959 WLAN_EID_EXT_CHANSWITCH_ANN, 960 beacon->len)); 961 962 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 963 sizeof(beacon_cmd)); 964 } 965 966 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 967 struct ieee80211_vif *vif, 968 struct sk_buff *beacon) 969 { 970 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 971 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 972 struct iwl_mac_beacon_cmd beacon_cmd = {}; 973 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 974 u16 flags; 975 struct ieee80211_chanctx_conf *ctx; 976 int channel; 977 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate); 978 979 /* Enable FILS on PSC channels only */ 980 rcu_read_lock(); 981 ctx = rcu_dereference(vif->bss_conf.chanctx_conf); 982 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); 983 WARN_ON(channel == 0); 984 if (cfg80211_channel_is_psc(ctx->def.chan) && 985 !IWL_MVM_DISABLE_AP_FILS) { 986 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 987 0) > 10 ? 988 IWL_MAC_BEACON_FILS : 989 IWL_MAC_BEACON_FILS_V1; 990 beacon_cmd.short_ssid = 991 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid, 992 vif->cfg.ssid_len)); 993 } 994 rcu_read_unlock(); 995 996 beacon_cmd.flags = cpu_to_le16(flags); 997 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 998 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 999 1000 if (vif->type == NL80211_IFTYPE_AP) 1001 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1002 &beacon_cmd.tim_size, 1003 beacon->data, beacon->len); 1004 1005 beacon_cmd.csa_offset = 1006 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1007 WLAN_EID_CHANNEL_SWITCH, 1008 beacon->len)); 1009 beacon_cmd.ecsa_offset = 1010 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1011 WLAN_EID_EXT_CHANSWITCH_ANN, 1012 beacon->len)); 1013 1014 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1015 sizeof(beacon_cmd)); 1016 } 1017 1018 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1019 struct ieee80211_vif *vif, 1020 struct sk_buff *beacon) 1021 { 1022 if (WARN_ON(!beacon)) 1023 return -EINVAL; 1024 1025 if (IWL_MVM_NON_TRANSMITTING_AP) 1026 return 0; 1027 1028 if (!fw_has_capa(&mvm->fw->ucode_capa, 1029 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1030 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1031 1032 if (fw_has_api(&mvm->fw->ucode_capa, 1033 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1034 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); 1035 1036 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1037 } 1038 1039 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1040 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1041 struct ieee80211_vif *vif) 1042 { 1043 struct sk_buff *beacon; 1044 int ret; 1045 1046 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1047 vif->type != NL80211_IFTYPE_ADHOC); 1048 1049 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 0); 1050 if (!beacon) 1051 return -ENOMEM; 1052 1053 #ifdef CONFIG_IWLWIFI_DEBUGFS 1054 if (mvm->beacon_inject_active) { 1055 dev_kfree_skb(beacon); 1056 return -EBUSY; 1057 } 1058 #endif 1059 1060 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 1061 dev_kfree_skb(beacon); 1062 return ret; 1063 } 1064 1065 struct iwl_mvm_mac_ap_iterator_data { 1066 struct iwl_mvm *mvm; 1067 struct ieee80211_vif *vif; 1068 u32 beacon_device_ts; 1069 u16 beacon_int; 1070 }; 1071 1072 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1073 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1074 struct ieee80211_vif *vif) 1075 { 1076 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1077 1078 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 1079 return; 1080 1081 /* Station client has higher priority over P2P client*/ 1082 if (vif->p2p && data->beacon_device_ts) 1083 return; 1084 1085 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1086 data->beacon_int = vif->bss_conf.beacon_int; 1087 } 1088 1089 /* 1090 * Fill the specific data for mac context of type AP of P2P GO 1091 */ 1092 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1093 struct ieee80211_vif *vif, 1094 struct iwl_mac_ctx_cmd *cmd, 1095 struct iwl_mac_data_ap *ctxt_ap, 1096 bool add) 1097 { 1098 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1099 struct iwl_mvm_mac_ap_iterator_data data = { 1100 .mvm = mvm, 1101 .vif = vif, 1102 .beacon_device_ts = 0 1103 }; 1104 1105 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1106 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1107 1108 /* 1109 * in AP mode, pass probe requests and beacons from other APs 1110 * (needed for ht protection); when there're no any associated 1111 * station don't ask FW to pass beacons to prevent unnecessary 1112 * wake-ups. 1113 */ 1114 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1115 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1116 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 1117 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1118 } else { 1119 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1120 } 1121 1122 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1123 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1124 vif->bss_conf.dtim_period); 1125 1126 if (!fw_has_api(&mvm->fw->ucode_capa, 1127 IWL_UCODE_TLV_API_STA_TYPE)) 1128 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue); 1129 1130 /* 1131 * Only set the beacon time when the MAC is being added, when we 1132 * just modify the MAC then we should keep the time -- the firmware 1133 * can otherwise have a "jumping" TBTT. 1134 */ 1135 if (add) { 1136 /* 1137 * If there is a station/P2P client interface which is 1138 * associated, set the AP's TBTT far enough from the station's 1139 * TBTT. Otherwise, set it to the current system time 1140 */ 1141 ieee80211_iterate_active_interfaces_atomic( 1142 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1143 iwl_mvm_mac_ap_iterator, &data); 1144 1145 if (data.beacon_device_ts) { 1146 u32 rand = get_random_u32_inclusive(36, 63); 1147 mvmvif->ap_beacon_time = data.beacon_device_ts + 1148 ieee80211_tu_to_usec(data.beacon_int * rand / 1149 100); 1150 } else { 1151 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1152 } 1153 } 1154 1155 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1156 ctxt_ap->beacon_tsf = 0; /* unused */ 1157 1158 /* TODO: Assume that the beacon id == mac context id */ 1159 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1160 } 1161 1162 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1163 struct ieee80211_vif *vif, 1164 u32 action) 1165 { 1166 struct iwl_mac_ctx_cmd cmd = {}; 1167 1168 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1169 1170 /* Fill the common data for all mac context types */ 1171 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1172 1173 /* Fill the data specific for ap mode */ 1174 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1175 action == FW_CTXT_ACTION_ADD); 1176 1177 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1178 } 1179 1180 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1181 struct ieee80211_vif *vif, 1182 u32 action) 1183 { 1184 struct iwl_mac_ctx_cmd cmd = {}; 1185 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1186 1187 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1188 1189 /* Fill the common data for all mac context types */ 1190 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1191 1192 /* Fill the data specific for GO mode */ 1193 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1194 action == FW_CTXT_ACTION_ADD); 1195 1196 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1197 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1198 cmd.go.opp_ps_enabled = 1199 cpu_to_le32(!!(noa->oppps_ctwindow & 1200 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1201 1202 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1203 } 1204 1205 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1206 u32 action, bool force_assoc_off, 1207 const u8 *bssid_override) 1208 { 1209 switch (vif->type) { 1210 case NL80211_IFTYPE_STATION: 1211 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1212 force_assoc_off, 1213 bssid_override); 1214 case NL80211_IFTYPE_AP: 1215 if (!vif->p2p) 1216 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1217 else 1218 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1219 case NL80211_IFTYPE_MONITOR: 1220 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1221 case NL80211_IFTYPE_P2P_DEVICE: 1222 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1223 case NL80211_IFTYPE_ADHOC: 1224 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1225 default: 1226 break; 1227 } 1228 1229 return -EOPNOTSUPP; 1230 } 1231 1232 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1233 { 1234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1235 int ret; 1236 1237 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1238 vif->addr, ieee80211_vif_type_p2p(vif))) 1239 return -EIO; 1240 1241 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1242 true, NULL); 1243 if (ret) 1244 return ret; 1245 1246 /* will only do anything at resume from D3 time */ 1247 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1248 1249 mvmvif->uploaded = true; 1250 return 0; 1251 } 1252 1253 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1254 bool force_assoc_off, const u8 *bssid_override) 1255 { 1256 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1257 1258 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1259 vif->addr, ieee80211_vif_type_p2p(vif))) 1260 return -EIO; 1261 1262 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1263 force_assoc_off, bssid_override); 1264 } 1265 1266 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1267 { 1268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1269 struct iwl_mac_ctx_cmd cmd; 1270 int ret; 1271 1272 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1273 vif->addr, ieee80211_vif_type_p2p(vif))) 1274 return -EIO; 1275 1276 memset(&cmd, 0, sizeof(cmd)); 1277 1278 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1279 mvmvif->color)); 1280 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1281 1282 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 1283 sizeof(cmd), &cmd); 1284 if (ret) { 1285 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1286 return ret; 1287 } 1288 1289 mvmvif->uploaded = false; 1290 1291 if (vif->type == NL80211_IFTYPE_MONITOR) { 1292 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1293 iwl_mvm_dealloc_snif_sta(mvm); 1294 } 1295 1296 return 0; 1297 } 1298 1299 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1300 struct ieee80211_vif *csa_vif, u32 gp2, 1301 bool tx_success) 1302 { 1303 struct iwl_mvm_vif *mvmvif = 1304 iwl_mvm_vif_from_mac80211(csa_vif); 1305 1306 /* Don't start to countdown from a failed beacon */ 1307 if (!tx_success && !mvmvif->csa_countdown) 1308 return; 1309 1310 mvmvif->csa_countdown = true; 1311 1312 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) { 1313 int c = ieee80211_beacon_update_cntdwn(csa_vif); 1314 1315 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); 1316 if (csa_vif->p2p && 1317 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1318 tx_success) { 1319 u32 rel_time = (c + 1) * 1320 csa_vif->bss_conf.beacon_int - 1321 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1322 u32 apply_time = gp2 + rel_time * 1024; 1323 1324 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1325 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1326 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1327 apply_time); 1328 } 1329 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1330 /* we don't have CSA NoA scheduled yet, switch now */ 1331 ieee80211_csa_finish(csa_vif); 1332 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1333 } 1334 } 1335 1336 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1337 struct iwl_rx_cmd_buffer *rxb) 1338 { 1339 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1340 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1341 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1342 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1343 struct ieee80211_vif *csa_vif; 1344 struct ieee80211_vif *tx_blocked_vif; 1345 struct agg_tx_status *agg_status; 1346 u16 status; 1347 1348 lockdep_assert_held(&mvm->mutex); 1349 1350 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1351 1352 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1353 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1354 &beacon_v5->beacon_notify_hdr; 1355 1356 if (unlikely(pkt_len < sizeof(*beacon_v5))) 1357 return; 1358 1359 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1360 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1361 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1362 IWL_DEBUG_RX(mvm, 1363 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1364 status, beacon_notify_hdr->failure_frame, 1365 le64_to_cpu(beacon->tsf), 1366 mvm->ap_last_beacon_gp2, 1367 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1368 } else { 1369 if (unlikely(pkt_len < sizeof(*beacon))) 1370 return; 1371 1372 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1373 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1374 IWL_DEBUG_RX(mvm, 1375 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1376 status, le64_to_cpu(beacon->tsf), 1377 mvm->ap_last_beacon_gp2); 1378 } 1379 1380 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1381 lockdep_is_held(&mvm->mutex)); 1382 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active)) 1383 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1384 (status == TX_STATUS_SUCCESS)); 1385 1386 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1387 lockdep_is_held(&mvm->mutex)); 1388 if (unlikely(tx_blocked_vif)) { 1389 struct iwl_mvm_vif *mvmvif = 1390 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1391 1392 /* 1393 * The channel switch is started and we have blocked the 1394 * stations. If this is the first beacon (the timeout wasn't 1395 * set), set the unblock timeout, otherwise countdown 1396 */ 1397 if (!mvm->csa_tx_block_bcn_timeout) 1398 mvm->csa_tx_block_bcn_timeout = 1399 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1400 else 1401 mvm->csa_tx_block_bcn_timeout--; 1402 1403 /* Check if the timeout is expired, and unblock tx */ 1404 if (mvm->csa_tx_block_bcn_timeout == 0) { 1405 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1406 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1407 } 1408 } 1409 } 1410 1411 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1412 struct iwl_rx_cmd_buffer *rxb) 1413 { 1414 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1415 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1416 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1417 struct iwl_fw_dbg_trigger_tlv *trigger; 1418 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1419 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1420 struct ieee80211_vif *vif; 1421 u32 id = le32_to_cpu(mb->mac_id); 1422 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1423 1424 IWL_DEBUG_INFO(mvm, 1425 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1426 le32_to_cpu(mb->mac_id), 1427 le32_to_cpu(mb->consec_missed_beacons), 1428 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1429 le32_to_cpu(mb->num_recvd_beacons), 1430 le32_to_cpu(mb->num_expected_beacons)); 1431 1432 rcu_read_lock(); 1433 1434 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1435 if (!vif) 1436 goto out; 1437 1438 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1439 rx_missed_bcon_since_rx = 1440 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1441 /* 1442 * TODO: the threshold should be adjusted based on latency conditions, 1443 * and/or in case of a CS flow on one of the other AP vifs. 1444 */ 1445 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1446 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1447 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1448 ieee80211_beacon_loss(vif); 1449 1450 iwl_dbg_tlv_time_point(&mvm->fwrt, 1451 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1452 1453 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1454 FW_DBG_TRIGGER_MISSED_BEACONS); 1455 if (!trigger) 1456 goto out; 1457 1458 bcon_trig = (void *)trigger->data; 1459 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1460 stop_trig_missed_bcon_since_rx = 1461 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1462 1463 /* TODO: implement start trigger */ 1464 1465 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1466 rx_missed_bcon >= stop_trig_missed_bcon) 1467 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1468 1469 out: 1470 rcu_read_unlock(); 1471 } 1472 1473 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1474 struct iwl_rx_cmd_buffer *rxb) 1475 { 1476 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1477 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1478 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data; 1479 struct ieee80211_rx_status rx_status; 1480 struct sk_buff *skb; 1481 u8 *data; 1482 u32 size = le32_to_cpu(sb->byte_count); 1483 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1484 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF), 1485 0); 1486 1487 if (size == 0) 1488 return; 1489 1490 /* handle per-version differences */ 1491 if (ver <= 2) { 1492 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data; 1493 1494 if (pkt_len < struct_size(sb_v2, data, size)) 1495 return; 1496 1497 data = sb_v2->data; 1498 } else { 1499 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data; 1500 1501 if (pkt_len < struct_size(sb_v3, data, size)) 1502 return; 1503 1504 data = sb_v3->data; 1505 } 1506 1507 skb = alloc_skb(size, GFP_ATOMIC); 1508 if (!skb) { 1509 IWL_ERR(mvm, "alloc_skb failed\n"); 1510 return; 1511 } 1512 1513 /* update rx_status according to the notification's metadata */ 1514 memset(&rx_status, 0, sizeof(rx_status)); 1515 rx_status.mactime = le64_to_cpu(sb->tsf); 1516 /* TSF as indicated by the firmware is at INA time */ 1517 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1518 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1519 rx_status.band = 1520 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1521 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1522 rx_status.freq = 1523 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1524 rx_status.band); 1525 1526 /* copy the data */ 1527 skb_put_data(skb, data, size); 1528 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1529 1530 /* pass it as regular rx to mac80211 */ 1531 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1532 } 1533 1534 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1535 struct iwl_rx_cmd_buffer *rxb) 1536 { 1537 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1538 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1539 struct iwl_probe_resp_data *old_data, *new_data; 1540 u32 id = le32_to_cpu(notif->mac_id); 1541 struct ieee80211_vif *vif; 1542 struct iwl_mvm_vif *mvmvif; 1543 1544 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1545 notif->noa_active, notif->csa_counter); 1546 1547 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1548 if (!vif) 1549 return; 1550 1551 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1552 1553 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1554 if (!new_data) 1555 return; 1556 1557 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1558 1559 /* noa_attr contains 1 reserved byte, need to substruct it */ 1560 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1561 sizeof(new_data->notif.noa_attr) - 1; 1562 1563 /* 1564 * If it's a one time NoA, only one descriptor is needed, 1565 * adjust the length according to len_low. 1566 */ 1567 if (new_data->notif.noa_attr.len_low == 1568 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1569 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1570 1571 old_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1572 lockdep_is_held(&mvmvif->mvm->mutex)); 1573 rcu_assign_pointer(mvmvif->probe_resp_data, new_data); 1574 1575 if (old_data) 1576 kfree_rcu(old_data, rcu_head); 1577 1578 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1579 notif->csa_counter >= 1) 1580 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1581 } 1582 1583 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm, 1584 struct iwl_rx_cmd_buffer *rxb) 1585 { 1586 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1587 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data; 1588 struct ieee80211_vif *csa_vif, *vif; 1589 struct iwl_mvm_vif *mvmvif; 1590 u32 id_n_color, csa_id, mac_id; 1591 1592 id_n_color = le32_to_cpu(notif->id_and_color); 1593 mac_id = id_n_color & FW_CTXT_ID_MSK; 1594 1595 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER)) 1596 return; 1597 1598 rcu_read_lock(); 1599 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]); 1600 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1601 1602 switch (vif->type) { 1603 case NL80211_IFTYPE_AP: 1604 csa_vif = rcu_dereference(mvm->csa_vif); 1605 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active || 1606 csa_vif != vif)) 1607 goto out_unlock; 1608 1609 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1610 if (WARN(csa_id != id_n_color, 1611 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1612 csa_id, id_n_color)) 1613 goto out_unlock; 1614 1615 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1616 1617 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1618 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1619 csa_vif->bss_conf.beacon_int)); 1620 1621 ieee80211_csa_finish(csa_vif); 1622 1623 rcu_read_unlock(); 1624 1625 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1626 return; 1627 case NL80211_IFTYPE_STATION: 1628 /* 1629 * if we don't know about an ongoing channel switch, 1630 * make sure FW cancels it 1631 */ 1632 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1633 CHANNEL_SWITCH_ERROR_NOTIF, 1634 0) && !vif->bss_conf.csa_active) { 1635 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n"); 1636 iwl_mvm_cancel_channel_switch(mvm, vif, mac_id); 1637 break; 1638 } 1639 1640 iwl_mvm_csa_client_absent(mvm, vif); 1641 cancel_delayed_work(&mvmvif->csa_work); 1642 ieee80211_chswitch_done(vif, true); 1643 break; 1644 default: 1645 /* should never happen */ 1646 WARN_ON_ONCE(1); 1647 break; 1648 } 1649 out_unlock: 1650 rcu_read_unlock(); 1651 } 1652 1653 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm, 1654 struct iwl_rx_cmd_buffer *rxb) 1655 { 1656 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1657 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; 1658 struct ieee80211_vif *vif; 1659 u32 id = le32_to_cpu(notif->mac_id); 1660 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); 1661 1662 rcu_read_lock(); 1663 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1664 if (!vif) { 1665 rcu_read_unlock(); 1666 return; 1667 } 1668 1669 IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n", 1670 id, csa_err_mask); 1671 if (csa_err_mask & (CS_ERR_COUNT_ERROR | 1672 CS_ERR_LONG_DELAY_AFTER_CS | 1673 CS_ERR_TX_BLOCK_TIMER_EXPIRED)) 1674 ieee80211_channel_switch_disconnect(vif, true); 1675 rcu_read_unlock(); 1676 } 1677 1678 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1679 struct iwl_rx_cmd_buffer *rxb) 1680 { 1681 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1682 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1683 struct ieee80211_vif *vif; 1684 u32 id = le32_to_cpu(mb->mac_id); 1685 1686 IWL_DEBUG_INFO(mvm, 1687 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1688 le32_to_cpu(mb->mac_id), 1689 mb->num_beacon_intervals_elapsed, 1690 mb->profile_periodicity); 1691 1692 rcu_read_lock(); 1693 1694 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1695 if (vif) 1696 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1697 1698 rcu_read_unlock(); 1699 } 1700