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 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO 229 * FW API 230 */ 231 if (!mvm->mld_api_is_used) { 232 switch (vif->type) { 233 case NL80211_IFTYPE_ADHOC: 234 break; 235 case NL80211_IFTYPE_STATION: 236 if (!vif->p2p) 237 break; 238 fallthrough; 239 default: 240 __clear_bit(0, data.available_mac_ids); 241 } 242 } 243 244 ieee80211_iterate_active_interfaces_atomic( 245 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 246 iwl_mvm_mac_iface_iterator, &data); 247 248 /* 249 * In the case we're getting here during resume, it's similar to 250 * firmware restart, and with RESUME_ALL the iterator will find 251 * the vif being added already. 252 * We don't want to reassign any IDs in either case since doing 253 * so would probably assign different IDs (as interfaces aren't 254 * necessarily added in the same order), but the old IDs were 255 * preserved anyway, so skip ID assignment for both resume and 256 * recovery. 257 */ 258 if (data.found_vif) 259 return 0; 260 261 /* Therefore, in recovery, we can't get here */ 262 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 263 return -EBUSY; 264 265 mvmvif->id = find_first_bit(data.available_mac_ids, 266 NUM_MAC_INDEX_DRIVER); 267 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 268 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 269 ret = -EIO; 270 goto exit_fail; 271 } 272 273 if (data.preferred_tsf != NUM_TSF_IDS) 274 mvmvif->tsf_id = data.preferred_tsf; 275 else 276 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 277 NUM_TSF_IDS); 278 if (mvmvif->tsf_id == NUM_TSF_IDS) { 279 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 280 ret = -EIO; 281 goto exit_fail; 282 } 283 284 mvmvif->color = 0; 285 286 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 287 mvmvif->time_event_data.id = TE_MAX; 288 289 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 290 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 291 return 0; 292 293 /* Allocate the CAB queue for softAP and GO interfaces */ 294 if (vif->type == NL80211_IFTYPE_AP || 295 vif->type == NL80211_IFTYPE_ADHOC) { 296 /* 297 * For TVQM this will be overwritten later with the FW assigned 298 * queue value (when queue is enabled). 299 */ 300 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 301 } 302 303 mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA; 304 mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA; 305 mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA; 306 307 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 308 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 309 310 return 0; 311 312 exit_fail: 313 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 314 return ret; 315 } 316 317 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 318 struct ieee80211_vif *vif, 319 enum nl80211_band band, 320 u8 *cck_rates, u8 *ofdm_rates) 321 { 322 struct ieee80211_supported_band *sband; 323 unsigned long basic = vif->bss_conf.basic_rates; 324 int lowest_present_ofdm = 100; 325 int lowest_present_cck = 100; 326 u8 cck = 0; 327 u8 ofdm = 0; 328 int i; 329 330 sband = mvm->hw->wiphy->bands[band]; 331 332 for_each_set_bit(i, &basic, BITS_PER_LONG) { 333 int hw = sband->bitrates[i].hw_value; 334 if (hw >= IWL_FIRST_OFDM_RATE) { 335 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 336 if (lowest_present_ofdm > hw) 337 lowest_present_ofdm = hw; 338 } else { 339 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 340 341 cck |= BIT(hw); 342 if (lowest_present_cck > hw) 343 lowest_present_cck = hw; 344 } 345 } 346 347 /* 348 * Now we've got the basic rates as bitmaps in the ofdm and cck 349 * variables. This isn't sufficient though, as there might not 350 * be all the right rates in the bitmap. E.g. if the only basic 351 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 352 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 353 * 354 * [...] a STA responding to a received frame shall transmit 355 * its Control Response frame [...] at the highest rate in the 356 * BSSBasicRateSet parameter that is less than or equal to the 357 * rate of the immediately previous frame in the frame exchange 358 * sequence ([...]) and that is of the same modulation class 359 * ([...]) as the received frame. If no rate contained in the 360 * BSSBasicRateSet parameter meets these conditions, then the 361 * control frame sent in response to a received frame shall be 362 * transmitted at the highest mandatory rate of the PHY that is 363 * less than or equal to the rate of the received frame, and 364 * that is of the same modulation class as the received frame. 365 * 366 * As a consequence, we need to add all mandatory rates that are 367 * lower than all of the basic rates to these bitmaps. 368 */ 369 370 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 371 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 372 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 373 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 374 /* 6M already there or needed so always add */ 375 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 376 377 /* 378 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 379 * Note, however: 380 * - if no CCK rates are basic, it must be ERP since there must 381 * be some basic rates at all, so they're OFDM => ERP PHY 382 * (or we're in 5 GHz, and the cck bitmap will never be used) 383 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 384 * - if 5.5M is basic, 1M and 2M are mandatory 385 * - if 2M is basic, 1M is mandatory 386 * - if 1M is basic, that's the only valid ACK rate. 387 * As a consequence, it's not as complicated as it sounds, just add 388 * any lower rates to the ACK rate bitmap. 389 */ 390 if (IWL_RATE_11M_INDEX < lowest_present_cck) 391 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 392 if (IWL_RATE_5M_INDEX < lowest_present_cck) 393 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 394 if (IWL_RATE_2M_INDEX < lowest_present_cck) 395 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 396 /* 1M already there or needed so always add */ 397 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 398 399 *cck_rates = cck; 400 *ofdm_rates = ofdm; 401 } 402 403 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 404 struct ieee80211_bss_conf *link_conf, 405 __le32 *cck_rates, __le32 *ofdm_rates) 406 { 407 struct ieee80211_chanctx_conf *chanctx; 408 u8 cck_ack_rates = 0, ofdm_ack_rates = 0; 409 410 rcu_read_lock(); 411 chanctx = rcu_dereference(link_conf->chanctx_conf); 412 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 413 : NL80211_BAND_2GHZ, 414 &cck_ack_rates, &ofdm_ack_rates); 415 416 rcu_read_unlock(); 417 418 *cck_rates = cpu_to_le32((u32)cck_ack_rates); 419 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 420 } 421 422 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm, 423 struct ieee80211_vif *vif, 424 struct ieee80211_bss_conf *link_conf, 425 __le32 *protection_flags, u32 ht_flag, 426 u32 tgg_flag) 427 { 428 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 429 u8 protection_mode = link_conf->ht_operation_mode & 430 IEEE80211_HT_OP_MODE_PROTECTION; 431 bool ht_enabled = !!(link_conf->ht_operation_mode & 432 IEEE80211_HT_OP_MODE_PROTECTION); 433 434 if (link_conf->use_cts_prot) 435 *protection_flags |= cpu_to_le32(tgg_flag); 436 437 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 438 link_conf->use_cts_prot, 439 link_conf->ht_operation_mode); 440 441 if (!ht_enabled) 442 return; 443 444 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 445 /* 446 * See section 9.23.3.1 of IEEE 80211-2012. 447 * Nongreenfield HT STAs Present is not supported. 448 */ 449 switch (protection_mode) { 450 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 451 break; 452 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 453 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 454 *protection_flags |= cpu_to_le32(ht_flag); 455 break; 456 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 457 /* Protect when channel wider than 20MHz */ 458 if (link_conf->chandef.width > NL80211_CHAN_WIDTH_20) 459 *protection_flags |= cpu_to_le32(ht_flag); 460 break; 461 default: 462 IWL_ERR(mvm, "Illegal protection mode %d\n", 463 protection_mode); 464 break; 465 } 466 } 467 468 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 469 struct ieee80211_bss_conf *link_conf, 470 struct iwl_ac_qos *ac, __le32 *qos_flags) 471 { 472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 473 int i; 474 475 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 476 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 477 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 478 479 ac[ucode_ac].cw_min = 480 cpu_to_le16(mvmvif->deflink.queue_params[i].cw_min); 481 ac[ucode_ac].cw_max = 482 cpu_to_le16(mvmvif->deflink.queue_params[i].cw_max); 483 ac[ucode_ac].edca_txop = 484 cpu_to_le16(mvmvif->deflink.queue_params[i].txop * 32); 485 ac[ucode_ac].aifsn = mvmvif->deflink.queue_params[i].aifs; 486 ac[ucode_ac].fifos_mask = BIT(txf); 487 } 488 489 if (link_conf->qos) 490 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 491 492 if (link_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 493 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 494 } 495 496 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif) 497 { 498 u32 mac_type = FW_MAC_TYPE_BSS_STA; 499 500 switch (vif->type) { 501 case NL80211_IFTYPE_STATION: 502 if (vif->p2p) 503 mac_type = FW_MAC_TYPE_P2P_STA; 504 else 505 mac_type = FW_MAC_TYPE_BSS_STA; 506 break; 507 case NL80211_IFTYPE_AP: 508 mac_type = FW_MAC_TYPE_GO; 509 break; 510 case NL80211_IFTYPE_MONITOR: 511 mac_type = FW_MAC_TYPE_LISTENER; 512 break; 513 case NL80211_IFTYPE_P2P_DEVICE: 514 mac_type = FW_MAC_TYPE_P2P_DEVICE; 515 break; 516 case NL80211_IFTYPE_ADHOC: 517 mac_type = FW_MAC_TYPE_IBSS; 518 break; 519 default: 520 WARN_ON_ONCE(1); 521 } 522 return mac_type; 523 } 524 525 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 526 struct ieee80211_vif *vif, 527 struct iwl_mac_ctx_cmd *cmd, 528 const u8 *bssid_override, 529 u32 action) 530 { 531 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 532 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 533 u32 ht_flag; 534 535 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 536 mvmvif->color)); 537 cmd->action = cpu_to_le32(action); 538 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif)); 539 540 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 541 542 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 543 544 if (bssid) 545 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 546 else 547 eth_broadcast_addr(cmd->bssid_addr); 548 549 iwl_mvm_set_fw_basic_rates(mvm, vif, &vif->bss_conf, &cmd->cck_rates, 550 &cmd->ofdm_rates); 551 552 cmd->cck_short_preamble = 553 cpu_to_le32(vif->bss_conf.use_short_preamble ? 554 MAC_FLG_SHORT_PREAMBLE : 0); 555 cmd->short_slot = 556 cpu_to_le32(vif->bss_conf.use_short_slot ? 557 MAC_FLG_SHORT_SLOT : 0); 558 559 cmd->filter_flags = 0; 560 561 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, &cmd->ac[0], 562 &cmd->qos_flags); 563 564 /* The fw does not distinguish between ht and fat */ 565 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 566 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf, 567 &cmd->protection_flags, 568 ht_flag, MAC_PROT_FLG_TGG_PROTECT); 569 } 570 571 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 572 struct iwl_mac_ctx_cmd *cmd) 573 { 574 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 575 sizeof(*cmd), cmd); 576 if (ret) 577 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n", 578 le32_to_cpu(cmd->action), ret); 579 return ret; 580 } 581 582 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 583 struct ieee80211_bss_conf *link_conf, 584 __le64 *dtim_tsf, __le32 *dtim_time, 585 __le32 *assoc_beacon_arrive_time) 586 { 587 u32 dtim_offs; 588 589 /* 590 * The DTIM count counts down, so when it is N that means N 591 * more beacon intervals happen until the DTIM TBTT. Therefore 592 * add this to the current time. If that ends up being in the 593 * future, the firmware will handle it. 594 * 595 * Also note that the system_timestamp (which we get here as 596 * "sync_device_ts") and TSF timestamp aren't at exactly the 597 * same offset in the frame -- the TSF is at the first symbol 598 * of the TSF, the system timestamp is at signal acquisition 599 * time. This means there's an offset between them of at most 600 * a few hundred microseconds (24 * 8 bits + PLCP time gives 601 * 384us in the longest case), this is currently not relevant 602 * as the firmware wakes up around 2ms before the TBTT. 603 */ 604 dtim_offs = link_conf->sync_dtim_count * 605 link_conf->beacon_int; 606 /* convert TU to usecs */ 607 dtim_offs *= 1024; 608 609 *dtim_tsf = 610 cpu_to_le64(link_conf->sync_tsf + dtim_offs); 611 *dtim_time = 612 cpu_to_le32(link_conf->sync_device_ts + dtim_offs); 613 *assoc_beacon_arrive_time = 614 cpu_to_le32(link_conf->sync_device_ts); 615 616 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 617 le64_to_cpu(*dtim_tsf), 618 le32_to_cpu(*dtim_time), 619 dtim_offs); 620 } 621 622 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm, 623 struct ieee80211_vif *vif) 624 { 625 struct ieee80211_p2p_noa_attr *noa = 626 &vif->bss_conf.p2p_noa_attr; 627 628 return cpu_to_le32(noa->oppps_ctwindow & 629 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 630 } 631 632 __le32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm, 633 struct ieee80211_vif *vif) 634 { 635 __le32 twt_policy = cpu_to_le32(0); 636 637 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) 638 twt_policy |= cpu_to_le32(TWT_SUPPORTED); 639 if (vif->bss_conf.twt_protected) 640 twt_policy |= cpu_to_le32(PROTECTED_TWT_SUPPORTED); 641 if (vif->bss_conf.twt_broadcast) 642 twt_policy |= cpu_to_le32(BROADCAST_TWT_SUPPORTED); 643 644 return twt_policy; 645 } 646 647 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 648 struct ieee80211_vif *vif, 649 u32 action, bool force_assoc_off, 650 const u8 *bssid_override) 651 { 652 struct iwl_mac_ctx_cmd cmd = {}; 653 struct iwl_mac_data_sta *ctxt_sta; 654 655 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 656 657 /* Fill the common data for all mac context types */ 658 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 659 660 /* 661 * We always want to hear MCAST frames, if we're not authorized yet, 662 * we'll drop them. 663 */ 664 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 665 666 if (vif->p2p) { 667 cmd.p2p_sta.ctwin = 668 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif); 669 670 ctxt_sta = &cmd.p2p_sta.sta; 671 } else { 672 ctxt_sta = &cmd.sta; 673 } 674 675 /* We need the dtim_period to set the MAC as associated */ 676 if (vif->cfg.assoc && vif->bss_conf.dtim_period && 677 !force_assoc_off) { 678 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 679 680 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf, 681 &ctxt_sta->dtim_tsf, 682 &ctxt_sta->dtim_time, 683 &ctxt_sta->assoc_beacon_arrive_time); 684 685 ctxt_sta->is_assoc = cpu_to_le32(1); 686 687 if (!mvmvif->authorized && 688 fw_has_capa(&mvm->fw->ucode_capa, 689 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO)) 690 ctxt_sta->data_policy |= 691 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE); 692 } else { 693 ctxt_sta->is_assoc = cpu_to_le32(0); 694 695 /* Allow beacons to pass through as long as we are not 696 * associated, or we do not have dtim period information. 697 */ 698 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 699 } 700 701 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 702 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 703 vif->bss_conf.dtim_period); 704 705 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 706 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid); 707 708 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p) 709 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 710 711 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 712 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 713 ctxt_sta->data_policy |= 714 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif); 715 } 716 717 718 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 719 } 720 721 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 722 struct ieee80211_vif *vif, 723 u32 action) 724 { 725 struct iwl_mac_ctx_cmd cmd = {}; 726 u32 tfd_queue_msk = 0; 727 int ret; 728 729 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 730 731 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 732 733 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 734 MAC_FILTER_IN_CONTROL_AND_MGMT | 735 MAC_FILTER_IN_BEACON | 736 MAC_FILTER_IN_PROBE_REQUEST | 737 MAC_FILTER_IN_CRC32 | 738 MAC_FILTER_ACCEPT_GRP); 739 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 740 741 /* 742 * the queue mask is only relevant for old TX API, and 743 * mvm->snif_queue isn't set here (it's still set to 744 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB) 745 */ 746 if (!iwl_mvm_has_new_tx_api(mvm)) 747 tfd_queue_msk = BIT(mvm->snif_queue); 748 749 /* Allocate sniffer station */ 750 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 751 vif->type, IWL_STA_GENERAL_PURPOSE); 752 if (ret) 753 return ret; 754 755 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 756 } 757 758 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 759 struct ieee80211_vif *vif, 760 u32 action) 761 { 762 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 763 struct iwl_mac_ctx_cmd cmd = {}; 764 765 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 766 767 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 768 769 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 770 MAC_FILTER_IN_PROBE_REQUEST | 771 MAC_FILTER_ACCEPT_GRP); 772 773 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 774 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 775 776 /* TODO: Assumes that the beacon id == mac context id */ 777 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 778 779 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 780 } 781 782 struct iwl_mvm_go_iterator_data { 783 bool go_active; 784 }; 785 786 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 787 { 788 struct iwl_mvm_go_iterator_data *data = _data; 789 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 790 791 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 792 mvmvif->ap_ibss_active) 793 data->go_active = true; 794 } 795 796 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm, 797 struct ieee80211_vif *vif) 798 { 799 struct iwl_mvm_go_iterator_data data = {}; 800 801 /* 802 * This flag should be set to true when the P2P Device is 803 * discoverable and there is at least another active P2P GO. Settings 804 * this flag will allow the P2P Device to be discoverable on other 805 * channels in addition to its listen channel. 806 * Note that this flag should not be set in other cases as it opens the 807 * Rx filters on all MAC and increases the number of interrupts. 808 */ 809 ieee80211_iterate_active_interfaces_atomic( 810 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 811 iwl_mvm_go_iterator, &data); 812 813 return cpu_to_le32(data.go_active ? 1 : 0); 814 } 815 816 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 817 struct ieee80211_vif *vif, 818 u32 action) 819 { 820 struct iwl_mac_ctx_cmd cmd = {}; 821 822 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 823 824 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 825 826 cmd.p2p_dev.is_disc_extended = 827 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif); 828 829 /* Override the filter flags to accept only probe requests */ 830 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 831 832 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 833 } 834 835 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 836 __le32 *tim_index, __le32 *tim_size, 837 u8 *beacon, u32 frame_size) 838 { 839 u32 tim_idx; 840 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 841 842 /* The index is relative to frame start but we start looking at the 843 * variable-length part of the beacon. */ 844 tim_idx = mgmt->u.beacon.variable - beacon; 845 846 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 847 while ((tim_idx < (frame_size - 2)) && 848 (beacon[tim_idx] != WLAN_EID_TIM)) 849 tim_idx += beacon[tim_idx+1] + 2; 850 851 /* If TIM field was found, set variables */ 852 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 853 *tim_index = cpu_to_le32(tim_idx); 854 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 855 } else { 856 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 857 } 858 } 859 860 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 861 { 862 struct ieee80211_mgmt *mgmt = (void *)beacon; 863 const u8 *ie; 864 865 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 866 return 0; 867 868 frame_size -= mgmt->u.beacon.variable - beacon; 869 870 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 871 if (!ie) 872 return 0; 873 874 return ie - beacon; 875 } 876 877 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, 878 struct ieee80211_tx_info *info, 879 struct ieee80211_vif *vif) 880 { 881 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 882 struct ieee80211_supported_band *sband; 883 unsigned long basic = vif->bss_conf.basic_rates; 884 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT; 885 u32 link_id = u32_get_bits(info->control.flags, 886 IEEE80211_TX_CTRL_MLO_LINK); 887 u8 band = info->band; 888 u8 rate; 889 u32 i; 890 891 if (link_id == IEEE80211_LINK_UNSPECIFIED && vif->valid_links) { 892 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) { 893 if (!mvmvif->link[i]) 894 continue; 895 /* shouldn't do this when >1 link is active */ 896 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED); 897 link_id = i; 898 } 899 } 900 901 if (link_id < IEEE80211_LINK_UNSPECIFIED) { 902 struct ieee80211_bss_conf *link_conf; 903 904 rcu_read_lock(); 905 link_conf = rcu_dereference(vif->link_conf[link_id]); 906 if (link_conf) { 907 basic = link_conf->basic_rates; 908 if (link_conf->chandef.chan) 909 band = link_conf->chandef.chan->band; 910 } 911 rcu_read_unlock(); 912 } 913 914 sband = mvm->hw->wiphy->bands[band]; 915 for_each_set_bit(i, &basic, BITS_PER_LONG) { 916 u16 hw = sband->bitrates[i].hw_value; 917 918 if (hw >= IWL_FIRST_OFDM_RATE) { 919 if (lowest_ofdm > hw) 920 lowest_ofdm = hw; 921 } else if (lowest_cck > hw) { 922 lowest_cck = hw; 923 } 924 } 925 926 if (band == NL80211_BAND_2GHZ && !vif->p2p && 927 vif->type != NL80211_IFTYPE_P2P_DEVICE && 928 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) { 929 if (lowest_cck != IWL_RATE_COUNT) 930 rate = lowest_cck; 931 else if (lowest_ofdm != IWL_RATE_COUNT) 932 rate = lowest_ofdm; 933 else 934 rate = IWL_RATE_1M_INDEX; 935 } else if (lowest_ofdm != IWL_RATE_COUNT) { 936 rate = lowest_ofdm; 937 } else { 938 rate = IWL_RATE_6M_INDEX; 939 } 940 941 return rate; 942 } 943 944 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx) 945 { 946 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx); 947 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10; 948 949 if (rate_idx <= IWL_FIRST_CCK_RATE) 950 flags |= is_new_rate ? IWL_MAC_BEACON_CCK 951 : IWL_MAC_BEACON_CCK_V1; 952 953 return flags; 954 } 955 956 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm, 957 struct ieee80211_tx_info *info, 958 struct ieee80211_vif *vif) 959 { 960 struct ieee80211_supported_band *sband = 961 mvm->hw->wiphy->bands[info->band]; 962 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy; 963 964 /* if beacon rate was configured try using it */ 965 if (hweight32(legacy) == 1) { 966 u32 rate = ffs(legacy) - 1; 967 968 return sband->bitrates[rate].hw_value; 969 } 970 971 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif); 972 } 973 974 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 975 struct ieee80211_vif *vif, 976 struct sk_buff *beacon, 977 struct iwl_tx_cmd *tx) 978 { 979 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 980 struct ieee80211_tx_info *info; 981 u8 rate; 982 u32 tx_flags; 983 984 info = IEEE80211_SKB_CB(beacon); 985 986 /* Set up TX command fields */ 987 tx->len = cpu_to_le16((u16)beacon->len); 988 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id; 989 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 990 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 991 tx_flags |= 992 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 993 TX_CMD_FLG_BT_PRIO_POS; 994 tx->tx_flags = cpu_to_le32(tx_flags); 995 996 if (!fw_has_capa(&mvm->fw->ucode_capa, 997 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 998 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 999 1000 tx->rate_n_flags = 1001 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 1002 RATE_MCS_ANT_POS); 1003 1004 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1005 1006 tx->rate_n_flags |= 1007 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate)); 1008 if (rate == IWL_FIRST_CCK_RATE) 1009 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1); 1010 1011 } 1012 1013 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 1014 struct sk_buff *beacon, 1015 void *data, int len) 1016 { 1017 struct iwl_host_cmd cmd = { 1018 .id = BEACON_TEMPLATE_CMD, 1019 .flags = CMD_ASYNC, 1020 }; 1021 1022 cmd.len[0] = len; 1023 cmd.data[0] = data; 1024 cmd.dataflags[0] = 0; 1025 cmd.len[1] = beacon->len; 1026 cmd.data[1] = beacon->data; 1027 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 1028 1029 return iwl_mvm_send_cmd(mvm, &cmd); 1030 } 1031 1032 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 1033 struct ieee80211_vif *vif, 1034 struct sk_buff *beacon) 1035 { 1036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1037 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 1038 1039 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1040 1041 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1042 1043 if (vif->type == NL80211_IFTYPE_AP) 1044 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1045 &beacon_cmd.tim_size, 1046 beacon->data, beacon->len); 1047 1048 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1049 sizeof(beacon_cmd)); 1050 } 1051 1052 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 1053 struct ieee80211_vif *vif, 1054 struct sk_buff *beacon) 1055 { 1056 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1057 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 1058 1059 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1060 1061 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1062 1063 if (vif->type == NL80211_IFTYPE_AP) 1064 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1065 &beacon_cmd.tim_size, 1066 beacon->data, beacon->len); 1067 1068 beacon_cmd.csa_offset = 1069 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1070 WLAN_EID_CHANNEL_SWITCH, 1071 beacon->len)); 1072 beacon_cmd.ecsa_offset = 1073 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1074 WLAN_EID_EXT_CHANSWITCH_ANN, 1075 beacon->len)); 1076 1077 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1078 sizeof(beacon_cmd)); 1079 } 1080 1081 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 1082 struct ieee80211_vif *vif, 1083 struct sk_buff *beacon, 1084 struct ieee80211_bss_conf *link_conf) 1085 { 1086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1087 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 1088 struct iwl_mac_beacon_cmd beacon_cmd = {}; 1089 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1090 u16 flags; 1091 struct ieee80211_chanctx_conf *ctx; 1092 int channel; 1093 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate); 1094 1095 /* Enable FILS on PSC channels only */ 1096 rcu_read_lock(); 1097 ctx = rcu_dereference(link_conf->chanctx_conf); 1098 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); 1099 WARN_ON(channel == 0); 1100 if (cfg80211_channel_is_psc(ctx->def.chan) && 1101 !IWL_MVM_DISABLE_AP_FILS) { 1102 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 1103 0) > 10 ? 1104 IWL_MAC_BEACON_FILS : 1105 IWL_MAC_BEACON_FILS_V1; 1106 beacon_cmd.short_ssid = 1107 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid, 1108 vif->cfg.ssid_len)); 1109 } 1110 rcu_read_unlock(); 1111 1112 beacon_cmd.flags = cpu_to_le16(flags); 1113 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 1114 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12) 1115 beacon_cmd.link_id = 1116 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id); 1117 else 1118 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id); 1119 1120 if (vif->type == NL80211_IFTYPE_AP) 1121 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1122 &beacon_cmd.tim_size, 1123 beacon->data, beacon->len); 1124 1125 beacon_cmd.csa_offset = 1126 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1127 WLAN_EID_CHANNEL_SWITCH, 1128 beacon->len)); 1129 beacon_cmd.ecsa_offset = 1130 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1131 WLAN_EID_EXT_CHANSWITCH_ANN, 1132 beacon->len)); 1133 1134 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1135 sizeof(beacon_cmd)); 1136 } 1137 1138 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1139 struct ieee80211_vif *vif, 1140 struct sk_buff *beacon, 1141 struct ieee80211_bss_conf *link_conf) 1142 { 1143 if (WARN_ON(!beacon)) 1144 return -EINVAL; 1145 1146 if (IWL_MVM_NON_TRANSMITTING_AP) 1147 return 0; 1148 1149 if (!fw_has_capa(&mvm->fw->ucode_capa, 1150 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1151 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1152 1153 if (fw_has_api(&mvm->fw->ucode_capa, 1154 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1155 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon, 1156 link_conf); 1157 1158 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1159 } 1160 1161 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1162 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1163 struct ieee80211_vif *vif, 1164 struct ieee80211_bss_conf *link_conf) 1165 { 1166 struct sk_buff *beacon; 1167 int ret; 1168 1169 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1170 vif->type != NL80211_IFTYPE_ADHOC); 1171 1172 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 1173 link_conf->link_id); 1174 if (!beacon) 1175 return -ENOMEM; 1176 1177 #ifdef CONFIG_IWLWIFI_DEBUGFS 1178 if (mvm->beacon_inject_active) { 1179 dev_kfree_skb(beacon); 1180 return -EBUSY; 1181 } 1182 #endif 1183 1184 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf); 1185 dev_kfree_skb(beacon); 1186 return ret; 1187 } 1188 1189 struct iwl_mvm_mac_ap_iterator_data { 1190 struct iwl_mvm *mvm; 1191 struct ieee80211_vif *vif; 1192 u32 beacon_device_ts; 1193 u16 beacon_int; 1194 }; 1195 1196 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1197 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1198 struct ieee80211_vif *vif) 1199 { 1200 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1201 1202 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 1203 return; 1204 1205 /* Station client has higher priority over P2P client*/ 1206 if (vif->p2p && data->beacon_device_ts) 1207 return; 1208 1209 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1210 data->beacon_int = vif->bss_conf.beacon_int; 1211 } 1212 1213 /* 1214 * Fill the filter flags for mac context of type AP or P2P GO. 1215 */ 1216 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm, 1217 struct iwl_mvm_vif *mvmvif, 1218 __le32 *filter_flags, 1219 int accept_probe_req_flag, 1220 int accept_beacon_flag) 1221 { 1222 /* 1223 * in AP mode, pass probe requests and beacons from other APs 1224 * (needed for ht protection); when there're no any associated 1225 * station don't ask FW to pass beacons to prevent unnecessary 1226 * wake-ups. 1227 */ 1228 *filter_flags |= cpu_to_le32(accept_probe_req_flag); 1229 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1230 *filter_flags |= cpu_to_le32(accept_beacon_flag); 1231 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1232 } else { 1233 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1234 } 1235 } 1236 1237 /* 1238 * Fill the specific data for mac context of type AP of P2P GO 1239 */ 1240 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1241 struct ieee80211_vif *vif, 1242 struct iwl_mac_ctx_cmd *cmd, 1243 struct iwl_mac_data_ap *ctxt_ap, 1244 bool add) 1245 { 1246 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1247 struct iwl_mvm_mac_ap_iterator_data data = { 1248 .mvm = mvm, 1249 .vif = vif, 1250 .beacon_device_ts = 0 1251 }; 1252 1253 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1254 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1255 1256 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif, 1257 &cmd->filter_flags, 1258 MAC_FILTER_IN_PROBE_REQUEST, 1259 MAC_FILTER_IN_BEACON); 1260 1261 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1262 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1263 vif->bss_conf.dtim_period); 1264 1265 if (!fw_has_api(&mvm->fw->ucode_capa, 1266 IWL_UCODE_TLV_API_STA_TYPE)) 1267 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue); 1268 1269 /* 1270 * Only set the beacon time when the MAC is being added, when we 1271 * just modify the MAC then we should keep the time -- the firmware 1272 * can otherwise have a "jumping" TBTT. 1273 */ 1274 if (add) { 1275 /* 1276 * If there is a station/P2P client interface which is 1277 * associated, set the AP's TBTT far enough from the station's 1278 * TBTT. Otherwise, set it to the current system time 1279 */ 1280 ieee80211_iterate_active_interfaces_atomic( 1281 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1282 iwl_mvm_mac_ap_iterator, &data); 1283 1284 if (data.beacon_device_ts) { 1285 u32 rand = get_random_u32_inclusive(36, 63); 1286 mvmvif->ap_beacon_time = data.beacon_device_ts + 1287 ieee80211_tu_to_usec(data.beacon_int * rand / 1288 100); 1289 } else { 1290 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1291 } 1292 } 1293 1294 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1295 ctxt_ap->beacon_tsf = 0; /* unused */ 1296 1297 /* TODO: Assume that the beacon id == mac context id */ 1298 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1299 } 1300 1301 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1302 struct ieee80211_vif *vif, 1303 u32 action) 1304 { 1305 struct iwl_mac_ctx_cmd cmd = {}; 1306 1307 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1308 1309 /* Fill the common data for all mac context types */ 1310 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1311 1312 /* Fill the data specific for ap mode */ 1313 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1314 action == FW_CTXT_ACTION_ADD); 1315 1316 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1317 } 1318 1319 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1320 struct ieee80211_vif *vif, 1321 u32 action) 1322 { 1323 struct iwl_mac_ctx_cmd cmd = {}; 1324 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1325 1326 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1327 1328 /* Fill the common data for all mac context types */ 1329 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1330 1331 /* Fill the data specific for GO mode */ 1332 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1333 action == FW_CTXT_ACTION_ADD); 1334 1335 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1336 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1337 cmd.go.opp_ps_enabled = 1338 cpu_to_le32(!!(noa->oppps_ctwindow & 1339 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1340 1341 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1342 } 1343 1344 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1345 u32 action, bool force_assoc_off, 1346 const u8 *bssid_override) 1347 { 1348 switch (vif->type) { 1349 case NL80211_IFTYPE_STATION: 1350 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1351 force_assoc_off, 1352 bssid_override); 1353 case NL80211_IFTYPE_AP: 1354 if (!vif->p2p) 1355 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1356 else 1357 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1358 case NL80211_IFTYPE_MONITOR: 1359 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1360 case NL80211_IFTYPE_P2P_DEVICE: 1361 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1362 case NL80211_IFTYPE_ADHOC: 1363 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1364 default: 1365 break; 1366 } 1367 1368 return -EOPNOTSUPP; 1369 } 1370 1371 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1372 { 1373 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1374 int ret; 1375 1376 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1377 vif->addr, ieee80211_vif_type_p2p(vif))) 1378 return -EIO; 1379 1380 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1381 true, NULL); 1382 if (ret) 1383 return ret; 1384 1385 /* will only do anything at resume from D3 time */ 1386 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1387 1388 mvmvif->uploaded = true; 1389 return 0; 1390 } 1391 1392 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1393 bool force_assoc_off, const u8 *bssid_override) 1394 { 1395 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1396 1397 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1398 vif->addr, ieee80211_vif_type_p2p(vif))) 1399 return -EIO; 1400 1401 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1402 force_assoc_off, bssid_override); 1403 } 1404 1405 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1406 { 1407 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1408 struct iwl_mac_ctx_cmd cmd; 1409 int ret; 1410 1411 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1412 vif->addr, ieee80211_vif_type_p2p(vif))) 1413 return -EIO; 1414 1415 memset(&cmd, 0, sizeof(cmd)); 1416 1417 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1418 mvmvif->color)); 1419 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1420 1421 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1422 if (ret) 1423 return ret; 1424 1425 mvmvif->uploaded = false; 1426 1427 if (vif->type == NL80211_IFTYPE_MONITOR) { 1428 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1429 iwl_mvm_dealloc_snif_sta(mvm); 1430 } 1431 1432 return 0; 1433 } 1434 1435 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1436 struct ieee80211_vif *csa_vif, u32 gp2, 1437 bool tx_success) 1438 { 1439 struct iwl_mvm_vif *mvmvif = 1440 iwl_mvm_vif_from_mac80211(csa_vif); 1441 1442 /* Don't start to countdown from a failed beacon */ 1443 if (!tx_success && !mvmvif->csa_countdown) 1444 return; 1445 1446 mvmvif->csa_countdown = true; 1447 1448 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) { 1449 int c = ieee80211_beacon_update_cntdwn(csa_vif); 1450 1451 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif, 1452 &csa_vif->bss_conf); 1453 if (csa_vif->p2p && 1454 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1455 tx_success) { 1456 u32 rel_time = (c + 1) * 1457 csa_vif->bss_conf.beacon_int - 1458 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1459 u32 apply_time = gp2 + rel_time * 1024; 1460 1461 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1462 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1463 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1464 apply_time); 1465 } 1466 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1467 /* we don't have CSA NoA scheduled yet, switch now */ 1468 ieee80211_csa_finish(csa_vif); 1469 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1470 } 1471 } 1472 1473 void iwl_mvm_rx_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_extended_beacon_notif *beacon = (void *)pkt->data; 1479 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1480 struct ieee80211_vif *csa_vif; 1481 struct ieee80211_vif *tx_blocked_vif; 1482 struct agg_tx_status *agg_status; 1483 u16 status; 1484 1485 lockdep_assert_held(&mvm->mutex); 1486 1487 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1488 1489 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1490 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1491 &beacon_v5->beacon_notify_hdr; 1492 1493 if (unlikely(pkt_len < sizeof(*beacon_v5))) 1494 return; 1495 1496 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1497 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1498 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1499 IWL_DEBUG_RX(mvm, 1500 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1501 status, beacon_notify_hdr->failure_frame, 1502 le64_to_cpu(beacon->tsf), 1503 mvm->ap_last_beacon_gp2, 1504 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1505 } else { 1506 if (unlikely(pkt_len < sizeof(*beacon))) 1507 return; 1508 1509 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1510 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1511 IWL_DEBUG_RX(mvm, 1512 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1513 status, le64_to_cpu(beacon->tsf), 1514 mvm->ap_last_beacon_gp2); 1515 } 1516 1517 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1518 lockdep_is_held(&mvm->mutex)); 1519 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active)) 1520 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1521 (status == TX_STATUS_SUCCESS)); 1522 1523 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1524 lockdep_is_held(&mvm->mutex)); 1525 if (unlikely(tx_blocked_vif)) { 1526 struct iwl_mvm_vif *mvmvif = 1527 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1528 1529 /* 1530 * The channel switch is started and we have blocked the 1531 * stations. If this is the first beacon (the timeout wasn't 1532 * set), set the unblock timeout, otherwise countdown 1533 */ 1534 if (!mvm->csa_tx_block_bcn_timeout) 1535 mvm->csa_tx_block_bcn_timeout = 1536 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1537 else 1538 mvm->csa_tx_block_bcn_timeout--; 1539 1540 /* Check if the timeout is expired, and unblock tx */ 1541 if (mvm->csa_tx_block_bcn_timeout == 0) { 1542 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1543 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1544 } 1545 } 1546 } 1547 1548 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1549 struct iwl_rx_cmd_buffer *rxb) 1550 { 1551 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1552 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1553 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1554 struct iwl_fw_dbg_trigger_tlv *trigger; 1555 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1556 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1557 struct ieee80211_vif *vif; 1558 u32 id = le32_to_cpu(mb->mac_id); 1559 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1560 u32 mac_type; 1561 1562 IWL_DEBUG_INFO(mvm, 1563 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1564 le32_to_cpu(mb->mac_id), 1565 le32_to_cpu(mb->consec_missed_beacons), 1566 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1567 le32_to_cpu(mb->num_recvd_beacons), 1568 le32_to_cpu(mb->num_expected_beacons)); 1569 1570 rcu_read_lock(); 1571 1572 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1573 if (!vif) 1574 goto out; 1575 1576 mac_type = iwl_mvm_get_mac_type(vif); 1577 1578 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type); 1579 1580 mvm->trans->dbg.dump_file_name_ext_valid = true; 1581 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME, 1582 "MacId_%d_MacType_%d", id, mac_type); 1583 1584 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1585 rx_missed_bcon_since_rx = 1586 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1587 /* 1588 * TODO: the threshold should be adjusted based on latency conditions, 1589 * and/or in case of a CS flow on one of the other AP vifs. 1590 */ 1591 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1592 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1593 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1594 ieee80211_beacon_loss(vif); 1595 1596 iwl_dbg_tlv_time_point(&mvm->fwrt, 1597 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1598 1599 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1600 FW_DBG_TRIGGER_MISSED_BEACONS); 1601 if (!trigger) 1602 goto out; 1603 1604 bcon_trig = (void *)trigger->data; 1605 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1606 stop_trig_missed_bcon_since_rx = 1607 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1608 1609 /* TODO: implement start trigger */ 1610 1611 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1612 rx_missed_bcon >= stop_trig_missed_bcon) 1613 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1614 1615 out: 1616 rcu_read_unlock(); 1617 } 1618 1619 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1620 struct iwl_rx_cmd_buffer *rxb) 1621 { 1622 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1623 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1624 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data; 1625 struct ieee80211_rx_status rx_status; 1626 struct sk_buff *skb; 1627 u8 *data; 1628 u32 size = le32_to_cpu(sb->byte_count); 1629 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1630 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF), 1631 0); 1632 1633 if (size == 0) 1634 return; 1635 1636 /* handle per-version differences */ 1637 if (ver <= 2) { 1638 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data; 1639 1640 if (pkt_len < struct_size(sb_v2, data, size)) 1641 return; 1642 1643 data = sb_v2->data; 1644 } else { 1645 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data; 1646 1647 if (pkt_len < struct_size(sb_v3, data, size)) 1648 return; 1649 1650 data = sb_v3->data; 1651 } 1652 1653 skb = alloc_skb(size, GFP_ATOMIC); 1654 if (!skb) { 1655 IWL_ERR(mvm, "alloc_skb failed\n"); 1656 return; 1657 } 1658 1659 /* update rx_status according to the notification's metadata */ 1660 memset(&rx_status, 0, sizeof(rx_status)); 1661 rx_status.mactime = le64_to_cpu(sb->tsf); 1662 /* TSF as indicated by the firmware is at INA time */ 1663 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1664 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1665 rx_status.band = 1666 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1667 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1668 rx_status.freq = 1669 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1670 rx_status.band); 1671 1672 /* copy the data */ 1673 skb_put_data(skb, data, size); 1674 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1675 1676 /* pass it as regular rx to mac80211 */ 1677 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1678 } 1679 1680 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1681 struct iwl_rx_cmd_buffer *rxb) 1682 { 1683 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1684 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1685 struct iwl_probe_resp_data *old_data, *new_data; 1686 u32 id = le32_to_cpu(notif->mac_id); 1687 struct ieee80211_vif *vif; 1688 struct iwl_mvm_vif *mvmvif; 1689 1690 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1691 notif->noa_active, notif->csa_counter); 1692 1693 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1694 if (!vif) 1695 return; 1696 1697 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1698 1699 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1700 if (!new_data) 1701 return; 1702 1703 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1704 1705 /* noa_attr contains 1 reserved byte, need to substruct it */ 1706 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1707 sizeof(new_data->notif.noa_attr) - 1; 1708 1709 /* 1710 * If it's a one time NoA, only one descriptor is needed, 1711 * adjust the length according to len_low. 1712 */ 1713 if (new_data->notif.noa_attr.len_low == 1714 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1715 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1716 1717 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data, 1718 lockdep_is_held(&mvmvif->mvm->mutex)); 1719 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data); 1720 1721 if (old_data) 1722 kfree_rcu(old_data, rcu_head); 1723 1724 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1725 notif->csa_counter >= 1) 1726 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1727 } 1728 1729 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm, 1730 struct iwl_rx_cmd_buffer *rxb) 1731 { 1732 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1733 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data; 1734 struct ieee80211_vif *csa_vif, *vif; 1735 struct iwl_mvm_vif *mvmvif; 1736 u32 id_n_color, csa_id, mac_id; 1737 1738 id_n_color = le32_to_cpu(notif->id_and_color); 1739 mac_id = id_n_color & FW_CTXT_ID_MSK; 1740 1741 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER)) 1742 return; 1743 1744 rcu_read_lock(); 1745 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]); 1746 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1747 1748 switch (vif->type) { 1749 case NL80211_IFTYPE_AP: 1750 csa_vif = rcu_dereference(mvm->csa_vif); 1751 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active || 1752 csa_vif != vif)) 1753 goto out_unlock; 1754 1755 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1756 if (WARN(csa_id != id_n_color, 1757 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1758 csa_id, id_n_color)) 1759 goto out_unlock; 1760 1761 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1762 1763 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1764 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1765 csa_vif->bss_conf.beacon_int)); 1766 1767 ieee80211_csa_finish(csa_vif); 1768 1769 rcu_read_unlock(); 1770 1771 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1772 return; 1773 case NL80211_IFTYPE_STATION: 1774 /* 1775 * if we don't know about an ongoing channel switch, 1776 * make sure FW cancels it 1777 */ 1778 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1779 CHANNEL_SWITCH_ERROR_NOTIF, 1780 0) && !vif->bss_conf.csa_active) { 1781 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n"); 1782 iwl_mvm_cancel_channel_switch(mvm, vif, mac_id); 1783 break; 1784 } 1785 1786 iwl_mvm_csa_client_absent(mvm, vif); 1787 cancel_delayed_work(&mvmvif->csa_work); 1788 ieee80211_chswitch_done(vif, true); 1789 break; 1790 default: 1791 /* should never happen */ 1792 WARN_ON_ONCE(1); 1793 break; 1794 } 1795 out_unlock: 1796 rcu_read_unlock(); 1797 } 1798 1799 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm, 1800 struct iwl_rx_cmd_buffer *rxb) 1801 { 1802 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1803 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; 1804 struct ieee80211_vif *vif; 1805 u32 id = le32_to_cpu(notif->mac_id); 1806 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); 1807 1808 rcu_read_lock(); 1809 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1810 if (!vif) { 1811 rcu_read_unlock(); 1812 return; 1813 } 1814 1815 IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n", 1816 id, csa_err_mask); 1817 if (csa_err_mask & (CS_ERR_COUNT_ERROR | 1818 CS_ERR_LONG_DELAY_AFTER_CS | 1819 CS_ERR_TX_BLOCK_TIMER_EXPIRED)) 1820 ieee80211_channel_switch_disconnect(vif, true); 1821 rcu_read_unlock(); 1822 } 1823 1824 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1825 struct iwl_rx_cmd_buffer *rxb) 1826 { 1827 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1828 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1829 struct ieee80211_vif *vif; 1830 u32 id = le32_to_cpu(mb->mac_id); 1831 1832 IWL_DEBUG_INFO(mvm, 1833 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1834 le32_to_cpu(mb->mac_id), 1835 mb->num_beacon_intervals_elapsed, 1836 mb->profile_periodicity); 1837 1838 rcu_read_lock(); 1839 1840 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1841 if (vif) 1842 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1843 1844 rcu_read_unlock(); 1845 } 1846