1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 28 { 29 int sta_id; 30 u32 reserved_ids = 0; 31 32 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 33 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 34 35 lockdep_assert_held(&mvm->mutex); 36 37 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 38 if (iftype != NL80211_IFTYPE_STATION) 39 reserved_ids = BIT(0); 40 41 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 42 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 43 if (BIT(sta_id) & reserved_ids) 44 continue; 45 46 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 47 lockdep_is_held(&mvm->mutex))) 48 return sta_id; 49 } 50 return IWL_MVM_INVALID_STA; 51 } 52 53 /* Calculate the ampdu density and max size */ 54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 55 struct ieee80211_bss_conf *link_conf, 56 u32 *_agg_size) 57 { 58 u32 agg_size = 0, mpdu_dens = 0; 59 60 if (WARN_ON(!link_sta)) 61 return 0; 62 63 /* Note that we always use only legacy & highest supported PPDUs, so 64 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating 65 * the maximum A-MPDU size of various PPDU types in different bands, 66 * we only need to worry about the highest supported PPDU type here. 67 */ 68 69 if (link_sta->ht_cap.ht_supported) { 70 agg_size = link_sta->ht_cap.ampdu_factor; 71 mpdu_dens = link_sta->ht_cap.ampdu_density; 72 } 73 74 if (link_conf->chandef.chan->band == NL80211_BAND_6GHZ) { 75 /* overwrite HT values on 6 GHz */ 76 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 77 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 78 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 79 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 80 } else if (link_sta->vht_cap.vht_supported) { 81 /* if VHT supported overwrite HT value */ 82 agg_size = u32_get_bits(link_sta->vht_cap.cap, 83 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK); 84 } 85 86 /* D6.0 10.12.2 A-MPDU length limit rules 87 * A STA indicates the maximum length of the A-MPDU preEOF padding 88 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 89 * Exponent field in its HT Capabilities, VHT Capabilities, 90 * and HE 6 GHz Band Capabilities elements (if present) and the 91 * Maximum AMPDU Length Exponent Extension field in its HE 92 * Capabilities element 93 */ 94 if (link_sta->he_cap.has_he) 95 agg_size += 96 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 97 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 98 99 if (link_sta->eht_cap.has_eht) 100 agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1], 101 IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK); 102 103 /* Limit to max A-MPDU supported by FW */ 104 agg_size = min_t(u32, agg_size, 105 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT); 106 107 *_agg_size = agg_size; 108 return mpdu_dens; 109 } 110 111 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 112 { 113 u8 uapsd_acs = 0; 114 115 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 116 uapsd_acs |= BIT(AC_BK); 117 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 118 uapsd_acs |= BIT(AC_BE); 119 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 120 uapsd_acs |= BIT(AC_VI); 121 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 122 uapsd_acs |= BIT(AC_VO); 123 124 return uapsd_acs | uapsd_acs << 4; 125 } 126 127 /* send station add/update command to firmware */ 128 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 129 bool update, unsigned int flags) 130 { 131 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 132 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 133 .sta_id = mvm_sta->deflink.sta_id, 134 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 135 .add_modify = update ? 1 : 0, 136 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 137 STA_FLG_MIMO_EN_MSK | 138 STA_FLG_RTS_MIMO_PROT), 139 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 140 }; 141 int ret; 142 u32 status; 143 u32 agg_size = 0, mpdu_dens = 0; 144 145 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 146 add_sta_cmd.station_type = mvm_sta->sta_type; 147 148 if (!update || (flags & STA_MODIFY_QUEUES)) { 149 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 150 151 if (!iwl_mvm_has_new_tx_api(mvm)) { 152 add_sta_cmd.tfd_queue_msk = 153 cpu_to_le32(mvm_sta->tfd_queue_msk); 154 155 if (flags & STA_MODIFY_QUEUES) 156 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 157 } else { 158 WARN_ON(flags & STA_MODIFY_QUEUES); 159 } 160 } 161 162 switch (sta->deflink.bandwidth) { 163 case IEEE80211_STA_RX_BW_320: 164 case IEEE80211_STA_RX_BW_160: 165 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 166 fallthrough; 167 case IEEE80211_STA_RX_BW_80: 168 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 169 fallthrough; 170 case IEEE80211_STA_RX_BW_40: 171 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 172 fallthrough; 173 case IEEE80211_STA_RX_BW_20: 174 if (sta->deflink.ht_cap.ht_supported) 175 add_sta_cmd.station_flags |= 176 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 177 break; 178 } 179 180 switch (sta->deflink.rx_nss) { 181 case 1: 182 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 183 break; 184 case 2: 185 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 186 break; 187 case 3 ... 8: 188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 189 break; 190 } 191 192 switch (sta->deflink.smps_mode) { 193 case IEEE80211_SMPS_AUTOMATIC: 194 case IEEE80211_SMPS_NUM_MODES: 195 WARN_ON(1); 196 break; 197 case IEEE80211_SMPS_STATIC: 198 /* override NSS */ 199 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 200 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 201 break; 202 case IEEE80211_SMPS_DYNAMIC: 203 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 204 break; 205 case IEEE80211_SMPS_OFF: 206 /* nothing */ 207 break; 208 } 209 210 if (sta->deflink.ht_cap.ht_supported || 211 mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) 212 add_sta_cmd.station_flags_msk |= 213 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 214 STA_FLG_AGG_MPDU_DENS_MSK); 215 216 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 217 &mvm_sta->vif->bss_conf, 218 &agg_size); 219 add_sta_cmd.station_flags |= 220 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 221 add_sta_cmd.station_flags |= 222 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 223 224 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 225 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 226 227 if (sta->wme) { 228 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 229 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 230 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 231 } 232 233 status = ADD_STA_SUCCESS; 234 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 235 iwl_mvm_add_sta_cmd_size(mvm), 236 &add_sta_cmd, &status); 237 if (ret) 238 return ret; 239 240 switch (status & IWL_ADD_STA_STATUS_MASK) { 241 case ADD_STA_SUCCESS: 242 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 243 break; 244 default: 245 ret = -EIO; 246 IWL_ERR(mvm, "ADD_STA failed\n"); 247 break; 248 } 249 250 return ret; 251 } 252 253 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 254 { 255 struct iwl_mvm_baid_data *data = 256 from_timer(data, t, session_timer); 257 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 258 struct iwl_mvm_baid_data *ba_data; 259 struct ieee80211_sta *sta; 260 struct iwl_mvm_sta *mvm_sta; 261 unsigned long timeout; 262 unsigned int sta_id; 263 264 rcu_read_lock(); 265 266 ba_data = rcu_dereference(*rcu_ptr); 267 268 if (WARN_ON(!ba_data)) 269 goto unlock; 270 271 if (!ba_data->timeout) 272 goto unlock; 273 274 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 275 if (time_is_after_jiffies(timeout)) { 276 mod_timer(&ba_data->session_timer, timeout); 277 goto unlock; 278 } 279 280 /* Timer expired */ 281 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 282 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 283 284 /* 285 * sta should be valid unless the following happens: 286 * The firmware asserts which triggers a reconfig flow, but 287 * the reconfig fails before we set the pointer to sta into 288 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 289 * A-MDPU and hence the timer continues to run. Then, the 290 * timer expires and sta is NULL. 291 */ 292 if (IS_ERR_OR_NULL(sta)) 293 goto unlock; 294 295 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 296 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 297 sta->addr, ba_data->tid); 298 unlock: 299 rcu_read_unlock(); 300 } 301 302 /* Disable aggregations for a bitmap of TIDs for a given station */ 303 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 304 unsigned long disable_agg_tids, 305 bool remove_queue) 306 { 307 struct iwl_mvm_add_sta_cmd cmd = {}; 308 struct ieee80211_sta *sta; 309 struct iwl_mvm_sta *mvmsta; 310 u32 status; 311 u8 sta_id; 312 313 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 314 return -EINVAL; 315 316 sta_id = mvm->queue_info[queue].ra_sta_id; 317 318 rcu_read_lock(); 319 320 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 321 322 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 323 rcu_read_unlock(); 324 return -EINVAL; 325 } 326 327 mvmsta = iwl_mvm_sta_from_mac80211(sta); 328 329 mvmsta->tid_disable_agg |= disable_agg_tids; 330 331 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 332 cmd.sta_id = mvmsta->deflink.sta_id; 333 cmd.add_modify = STA_MODE_MODIFY; 334 cmd.modify_mask = STA_MODIFY_QUEUES; 335 if (disable_agg_tids) 336 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 337 if (remove_queue) 338 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 339 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 340 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 341 342 rcu_read_unlock(); 343 344 /* Notify FW of queue removal from the STA queues */ 345 status = ADD_STA_SUCCESS; 346 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 347 iwl_mvm_add_sta_cmd_size(mvm), 348 &cmd, &status); 349 } 350 351 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 352 int sta_id, u16 *queueptr, u8 tid) 353 { 354 int queue = *queueptr; 355 struct iwl_scd_txq_cfg_cmd cmd = { 356 .scd_queue = queue, 357 .action = SCD_CFG_DISABLE_QUEUE, 358 }; 359 int ret; 360 361 lockdep_assert_held(&mvm->mutex); 362 363 if (iwl_mvm_has_new_tx_api(mvm)) { 364 if (mvm->sta_remove_requires_queue_remove) { 365 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 366 SCD_QUEUE_CONFIG_CMD); 367 struct iwl_scd_queue_cfg_cmd remove_cmd = { 368 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 369 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 370 }; 371 372 if (tid == IWL_MAX_TID_COUNT) 373 tid = IWL_MGMT_TID; 374 375 remove_cmd.u.remove.tid = cpu_to_le32(tid); 376 377 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 378 sizeof(remove_cmd), 379 &remove_cmd); 380 } else { 381 ret = 0; 382 } 383 384 iwl_trans_txq_free(mvm->trans, queue); 385 *queueptr = IWL_MVM_INVALID_QUEUE; 386 387 return ret; 388 } 389 390 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 391 return 0; 392 393 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 394 395 cmd.action = mvm->queue_info[queue].tid_bitmap ? 396 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 397 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 398 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 399 400 IWL_DEBUG_TX_QUEUES(mvm, 401 "Disabling TXQ #%d tids=0x%x\n", 402 queue, 403 mvm->queue_info[queue].tid_bitmap); 404 405 /* If the queue is still enabled - nothing left to do in this func */ 406 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 407 return 0; 408 409 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 410 cmd.tid = mvm->queue_info[queue].txq_tid; 411 412 /* Make sure queue info is correct even though we overwrite it */ 413 WARN(mvm->queue_info[queue].tid_bitmap, 414 "TXQ #%d info out-of-sync - tids=0x%x\n", 415 queue, mvm->queue_info[queue].tid_bitmap); 416 417 /* If we are here - the queue is freed and we can zero out these vals */ 418 mvm->queue_info[queue].tid_bitmap = 0; 419 420 if (sta) { 421 struct iwl_mvm_txq *mvmtxq = 422 iwl_mvm_txq_from_tid(sta, tid); 423 424 spin_lock_bh(&mvm->add_stream_lock); 425 list_del_init(&mvmtxq->list); 426 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 427 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 428 spin_unlock_bh(&mvm->add_stream_lock); 429 } 430 431 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 432 mvm->queue_info[queue].reserved = false; 433 434 iwl_trans_txq_disable(mvm->trans, queue, false); 435 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 436 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 437 438 if (ret) 439 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 440 queue, ret); 441 return ret; 442 } 443 444 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 445 { 446 struct ieee80211_sta *sta; 447 struct iwl_mvm_sta *mvmsta; 448 unsigned long tid_bitmap; 449 unsigned long agg_tids = 0; 450 u8 sta_id; 451 int tid; 452 453 lockdep_assert_held(&mvm->mutex); 454 455 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 456 return -EINVAL; 457 458 sta_id = mvm->queue_info[queue].ra_sta_id; 459 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 460 461 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 462 lockdep_is_held(&mvm->mutex)); 463 464 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 465 return -EINVAL; 466 467 mvmsta = iwl_mvm_sta_from_mac80211(sta); 468 469 spin_lock_bh(&mvmsta->lock); 470 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 471 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 472 agg_tids |= BIT(tid); 473 } 474 spin_unlock_bh(&mvmsta->lock); 475 476 return agg_tids; 477 } 478 479 /* 480 * Remove a queue from a station's resources. 481 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 482 * doesn't disable the queue 483 */ 484 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 485 { 486 struct ieee80211_sta *sta; 487 struct iwl_mvm_sta *mvmsta; 488 unsigned long tid_bitmap; 489 unsigned long disable_agg_tids = 0; 490 u8 sta_id; 491 int tid; 492 493 lockdep_assert_held(&mvm->mutex); 494 495 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 496 return -EINVAL; 497 498 sta_id = mvm->queue_info[queue].ra_sta_id; 499 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 500 501 rcu_read_lock(); 502 503 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 504 505 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 506 rcu_read_unlock(); 507 return 0; 508 } 509 510 mvmsta = iwl_mvm_sta_from_mac80211(sta); 511 512 spin_lock_bh(&mvmsta->lock); 513 /* Unmap MAC queues and TIDs from this queue */ 514 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 515 struct iwl_mvm_txq *mvmtxq = 516 iwl_mvm_txq_from_tid(sta, tid); 517 518 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 519 disable_agg_tids |= BIT(tid); 520 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 521 522 spin_lock_bh(&mvm->add_stream_lock); 523 list_del_init(&mvmtxq->list); 524 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 525 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 526 spin_unlock_bh(&mvm->add_stream_lock); 527 } 528 529 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 530 spin_unlock_bh(&mvmsta->lock); 531 532 rcu_read_unlock(); 533 534 /* 535 * The TX path may have been using this TXQ_ID from the tid_data, 536 * so make sure it's no longer running so that we can safely reuse 537 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 538 * above, but nothing guarantees we've stopped using them. Thus, 539 * without this, we could get to iwl_mvm_disable_txq() and remove 540 * the queue while still sending frames to it. 541 */ 542 synchronize_net(); 543 544 return disable_agg_tids; 545 } 546 547 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 548 struct ieee80211_sta *old_sta, 549 u8 new_sta_id) 550 { 551 struct iwl_mvm_sta *mvmsta; 552 u8 sta_id, tid; 553 unsigned long disable_agg_tids = 0; 554 bool same_sta; 555 u16 queue_tmp = queue; 556 int ret; 557 558 lockdep_assert_held(&mvm->mutex); 559 560 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 561 return -EINVAL; 562 563 sta_id = mvm->queue_info[queue].ra_sta_id; 564 tid = mvm->queue_info[queue].txq_tid; 565 566 same_sta = sta_id == new_sta_id; 567 568 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 569 if (WARN_ON(!mvmsta)) 570 return -EINVAL; 571 572 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 573 /* Disable the queue */ 574 if (disable_agg_tids) 575 iwl_mvm_invalidate_sta_queue(mvm, queue, 576 disable_agg_tids, false); 577 578 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 579 if (ret) { 580 IWL_ERR(mvm, 581 "Failed to free inactive queue %d (ret=%d)\n", 582 queue, ret); 583 584 return ret; 585 } 586 587 /* If TXQ is allocated to another STA, update removal in FW */ 588 if (!same_sta) 589 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 590 591 return 0; 592 } 593 594 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 595 unsigned long tfd_queue_mask, u8 ac) 596 { 597 int queue = 0; 598 u8 ac_to_queue[IEEE80211_NUM_ACS]; 599 int i; 600 601 /* 602 * This protects us against grabbing a queue that's being reconfigured 603 * by the inactivity checker. 604 */ 605 lockdep_assert_held(&mvm->mutex); 606 607 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 608 return -EINVAL; 609 610 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 611 612 /* See what ACs the existing queues for this STA have */ 613 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 614 /* Only DATA queues can be shared */ 615 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 616 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 617 continue; 618 619 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 620 } 621 622 /* 623 * The queue to share is chosen only from DATA queues as follows (in 624 * descending priority): 625 * 1. An AC_BE queue 626 * 2. Same AC queue 627 * 3. Highest AC queue that is lower than new AC 628 * 4. Any existing AC (there always is at least 1 DATA queue) 629 */ 630 631 /* Priority 1: An AC_BE queue */ 632 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 633 queue = ac_to_queue[IEEE80211_AC_BE]; 634 /* Priority 2: Same AC queue */ 635 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 636 queue = ac_to_queue[ac]; 637 /* Priority 3a: If new AC is VO and VI exists - use VI */ 638 else if (ac == IEEE80211_AC_VO && 639 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 640 queue = ac_to_queue[IEEE80211_AC_VI]; 641 /* Priority 3b: No BE so only AC less than the new one is BK */ 642 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 643 queue = ac_to_queue[IEEE80211_AC_BK]; 644 /* Priority 4a: No BE nor BK - use VI if exists */ 645 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 646 queue = ac_to_queue[IEEE80211_AC_VI]; 647 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 648 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 649 queue = ac_to_queue[IEEE80211_AC_VO]; 650 651 /* Make sure queue found (or not) is legal */ 652 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 653 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 654 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 655 IWL_ERR(mvm, "No DATA queues available to share\n"); 656 return -ENOSPC; 657 } 658 659 return queue; 660 } 661 662 /* Re-configure the SCD for a queue that has already been configured */ 663 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 664 int sta_id, int tid, int frame_limit, u16 ssn) 665 { 666 struct iwl_scd_txq_cfg_cmd cmd = { 667 .scd_queue = queue, 668 .action = SCD_CFG_ENABLE_QUEUE, 669 .window = frame_limit, 670 .sta_id = sta_id, 671 .ssn = cpu_to_le16(ssn), 672 .tx_fifo = fifo, 673 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 674 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 675 .tid = tid, 676 }; 677 int ret; 678 679 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 680 return -EINVAL; 681 682 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 683 "Trying to reconfig unallocated queue %d\n", queue)) 684 return -ENXIO; 685 686 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 687 688 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 689 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 690 queue, fifo, ret); 691 692 return ret; 693 } 694 695 /* 696 * If a given queue has a higher AC than the TID stream that is being compared 697 * to, the queue needs to be redirected to the lower AC. This function does that 698 * in such a case, otherwise - if no redirection required - it does nothing, 699 * unless the %force param is true. 700 */ 701 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 702 int ac, int ssn, unsigned int wdg_timeout, 703 bool force, struct iwl_mvm_txq *txq) 704 { 705 struct iwl_scd_txq_cfg_cmd cmd = { 706 .scd_queue = queue, 707 .action = SCD_CFG_DISABLE_QUEUE, 708 }; 709 bool shared_queue; 710 int ret; 711 712 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 713 return -EINVAL; 714 715 /* 716 * If the AC is lower than current one - FIFO needs to be redirected to 717 * the lowest one of the streams in the queue. Check if this is needed 718 * here. 719 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 720 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 721 * we need to check if the numerical value of X is LARGER than of Y. 722 */ 723 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 724 IWL_DEBUG_TX_QUEUES(mvm, 725 "No redirection needed on TXQ #%d\n", 726 queue); 727 return 0; 728 } 729 730 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 731 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 732 cmd.tid = mvm->queue_info[queue].txq_tid; 733 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 734 735 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 736 queue, iwl_mvm_ac_to_tx_fifo[ac]); 737 738 /* Stop the queue and wait for it to empty */ 739 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 740 741 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 742 if (ret) { 743 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 744 queue); 745 ret = -EIO; 746 goto out; 747 } 748 749 /* Before redirecting the queue we need to de-activate it */ 750 iwl_trans_txq_disable(mvm->trans, queue, false); 751 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 752 if (ret) 753 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 754 ret); 755 756 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 757 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 758 759 /* Update the TID "owner" of the queue */ 760 mvm->queue_info[queue].txq_tid = tid; 761 762 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 763 764 /* Redirect to lower AC */ 765 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 766 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 767 768 /* Update AC marking of the queue */ 769 mvm->queue_info[queue].mac80211_ac = ac; 770 771 /* 772 * Mark queue as shared in transport if shared 773 * Note this has to be done after queue enablement because enablement 774 * can also set this value, and there is no indication there to shared 775 * queues 776 */ 777 if (shared_queue) 778 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 779 780 out: 781 /* Continue using the queue */ 782 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 783 784 return ret; 785 } 786 787 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 788 u8 minq, u8 maxq) 789 { 790 int i; 791 792 lockdep_assert_held(&mvm->mutex); 793 794 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 795 "max queue %d >= num_of_queues (%d)", maxq, 796 mvm->trans->trans_cfg->base_params->num_of_queues)) 797 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 798 799 /* This should not be hit with new TX path */ 800 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 801 return -ENOSPC; 802 803 /* Start by looking for a free queue */ 804 for (i = minq; i <= maxq; i++) 805 if (mvm->queue_info[i].tid_bitmap == 0 && 806 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 807 return i; 808 809 return -ENOSPC; 810 } 811 812 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 813 { 814 int max_size = IWL_DEFAULT_QUEUE_SIZE; 815 unsigned int link_id; 816 817 /* this queue isn't used for traffic (cab_queue) */ 818 if (!sta) 819 return IWL_MGMT_QUEUE_SIZE; 820 821 rcu_read_lock(); 822 823 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 824 struct ieee80211_link_sta *link = 825 rcu_dereference(sta->link[link_id]); 826 827 if (!link) 828 continue; 829 830 /* support for 512 ba size */ 831 if (link->eht_cap.has_eht && 832 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 833 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 834 835 /* support for 256 ba size */ 836 if (link->he_cap.has_he && 837 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 838 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 839 } 840 841 rcu_read_unlock(); 842 return max_size; 843 } 844 845 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 846 struct ieee80211_sta *sta, 847 u8 sta_id, u8 tid, unsigned int timeout) 848 { 849 int queue, size; 850 u32 sta_mask = 0; 851 852 if (tid == IWL_MAX_TID_COUNT) { 853 tid = IWL_MGMT_TID; 854 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 855 mvm->trans->cfg->min_txq_size); 856 } else { 857 size = iwl_mvm_get_queue_size(sta); 858 } 859 860 /* take the min with bc tbl entries allowed */ 861 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 862 863 /* size needs to be power of 2 values for calculating read/write pointers */ 864 size = rounddown_pow_of_two(size); 865 866 if (sta) { 867 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 868 struct ieee80211_link_sta *link_sta; 869 unsigned int link_id; 870 871 rcu_read_lock(); 872 for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) { 873 struct iwl_mvm_link_sta *link = 874 rcu_dereference_protected(mvmsta->link[link_id], 875 lockdep_is_held(&mvm->mutex)); 876 877 if (!link) 878 continue; 879 880 sta_mask |= BIT(link->sta_id); 881 } 882 rcu_read_unlock(); 883 } else { 884 sta_mask |= BIT(sta_id); 885 } 886 887 if (!sta_mask) 888 return -EINVAL; 889 890 do { 891 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 892 tid, size, timeout); 893 894 if (queue < 0) 895 IWL_DEBUG_TX_QUEUES(mvm, 896 "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n", 897 size, sta_mask, tid, queue); 898 size /= 2; 899 } while (queue < 0 && size >= 16); 900 901 if (queue < 0) 902 return queue; 903 904 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 905 queue, sta_mask, tid); 906 907 return queue; 908 } 909 910 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 911 struct ieee80211_sta *sta, u8 ac, 912 int tid) 913 { 914 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 915 struct iwl_mvm_txq *mvmtxq = 916 iwl_mvm_txq_from_tid(sta, tid); 917 unsigned int wdg_timeout = 918 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 919 int queue = -1; 920 921 lockdep_assert_held(&mvm->mutex); 922 923 IWL_DEBUG_TX_QUEUES(mvm, 924 "Allocating queue for sta %d on tid %d\n", 925 mvmsta->deflink.sta_id, tid); 926 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 927 tid, wdg_timeout); 928 if (queue < 0) 929 return queue; 930 931 mvmtxq->txq_id = queue; 932 mvm->tvqm_info[queue].txq_tid = tid; 933 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 934 935 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 936 937 spin_lock_bh(&mvmsta->lock); 938 mvmsta->tid_data[tid].txq_id = queue; 939 spin_unlock_bh(&mvmsta->lock); 940 941 return 0; 942 } 943 944 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 945 struct ieee80211_sta *sta, 946 int queue, u8 sta_id, u8 tid) 947 { 948 bool enable_queue = true; 949 950 /* Make sure this TID isn't already enabled */ 951 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 952 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 953 queue, tid); 954 return false; 955 } 956 957 /* Update mappings and refcounts */ 958 if (mvm->queue_info[queue].tid_bitmap) 959 enable_queue = false; 960 961 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 962 mvm->queue_info[queue].ra_sta_id = sta_id; 963 964 if (enable_queue) { 965 if (tid != IWL_MAX_TID_COUNT) 966 mvm->queue_info[queue].mac80211_ac = 967 tid_to_mac80211_ac[tid]; 968 else 969 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 970 971 mvm->queue_info[queue].txq_tid = tid; 972 } 973 974 if (sta) { 975 struct iwl_mvm_txq *mvmtxq = 976 iwl_mvm_txq_from_tid(sta, tid); 977 978 mvmtxq->txq_id = queue; 979 } 980 981 IWL_DEBUG_TX_QUEUES(mvm, 982 "Enabling TXQ #%d tids=0x%x\n", 983 queue, mvm->queue_info[queue].tid_bitmap); 984 985 return enable_queue; 986 } 987 988 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 989 int queue, u16 ssn, 990 const struct iwl_trans_txq_scd_cfg *cfg, 991 unsigned int wdg_timeout) 992 { 993 struct iwl_scd_txq_cfg_cmd cmd = { 994 .scd_queue = queue, 995 .action = SCD_CFG_ENABLE_QUEUE, 996 .window = cfg->frame_limit, 997 .sta_id = cfg->sta_id, 998 .ssn = cpu_to_le16(ssn), 999 .tx_fifo = cfg->fifo, 1000 .aggregate = cfg->aggregate, 1001 .tid = cfg->tid, 1002 }; 1003 bool inc_ssn; 1004 1005 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1006 return false; 1007 1008 /* Send the enabling command if we need to */ 1009 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 1010 return false; 1011 1012 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 1013 NULL, wdg_timeout); 1014 if (inc_ssn) 1015 le16_add_cpu(&cmd.ssn, 1); 1016 1017 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1018 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1019 1020 return inc_ssn; 1021 } 1022 1023 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1024 { 1025 struct iwl_scd_txq_cfg_cmd cmd = { 1026 .scd_queue = queue, 1027 .action = SCD_CFG_UPDATE_QUEUE_TID, 1028 }; 1029 int tid; 1030 unsigned long tid_bitmap; 1031 int ret; 1032 1033 lockdep_assert_held(&mvm->mutex); 1034 1035 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1036 return; 1037 1038 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1039 1040 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1041 return; 1042 1043 /* Find any TID for queue */ 1044 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1045 cmd.tid = tid; 1046 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1047 1048 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1049 if (ret) { 1050 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1051 queue, ret); 1052 return; 1053 } 1054 1055 mvm->queue_info[queue].txq_tid = tid; 1056 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1057 queue, tid); 1058 } 1059 1060 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1061 { 1062 struct ieee80211_sta *sta; 1063 struct iwl_mvm_sta *mvmsta; 1064 u8 sta_id; 1065 int tid = -1; 1066 unsigned long tid_bitmap; 1067 unsigned int wdg_timeout; 1068 int ssn; 1069 int ret = true; 1070 1071 /* queue sharing is disabled on new TX path */ 1072 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1073 return; 1074 1075 lockdep_assert_held(&mvm->mutex); 1076 1077 sta_id = mvm->queue_info[queue].ra_sta_id; 1078 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1079 1080 /* Find TID for queue, and make sure it is the only one on the queue */ 1081 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1082 if (tid_bitmap != BIT(tid)) { 1083 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1084 queue, tid_bitmap); 1085 return; 1086 } 1087 1088 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1089 tid); 1090 1091 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1092 lockdep_is_held(&mvm->mutex)); 1093 1094 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1095 return; 1096 1097 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1098 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1099 1100 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1101 1102 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1103 tid_to_mac80211_ac[tid], ssn, 1104 wdg_timeout, true, 1105 iwl_mvm_txq_from_tid(sta, tid)); 1106 if (ret) { 1107 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1108 return; 1109 } 1110 1111 /* If aggs should be turned back on - do it */ 1112 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1113 struct iwl_mvm_add_sta_cmd cmd = {0}; 1114 1115 mvmsta->tid_disable_agg &= ~BIT(tid); 1116 1117 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1118 cmd.sta_id = mvmsta->deflink.sta_id; 1119 cmd.add_modify = STA_MODE_MODIFY; 1120 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1121 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1122 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1123 1124 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1125 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1126 if (!ret) { 1127 IWL_DEBUG_TX_QUEUES(mvm, 1128 "TXQ #%d is now aggregated again\n", 1129 queue); 1130 1131 /* Mark queue intenally as aggregating again */ 1132 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1133 } 1134 } 1135 1136 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1137 } 1138 1139 /* 1140 * Remove inactive TIDs of a given queue. 1141 * If all queue TIDs are inactive - mark the queue as inactive 1142 * If only some the queue TIDs are inactive - unmap them from the queue 1143 * 1144 * Returns %true if all TIDs were removed and the queue could be reused. 1145 */ 1146 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1147 struct iwl_mvm_sta *mvmsta, int queue, 1148 unsigned long tid_bitmap, 1149 unsigned long *unshare_queues, 1150 unsigned long *changetid_queues) 1151 { 1152 unsigned int tid; 1153 1154 lockdep_assert_held(&mvmsta->lock); 1155 lockdep_assert_held(&mvm->mutex); 1156 1157 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1158 return false; 1159 1160 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1161 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1162 /* If some TFDs are still queued - don't mark TID as inactive */ 1163 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1164 tid_bitmap &= ~BIT(tid); 1165 1166 /* Don't mark as inactive any TID that has an active BA */ 1167 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1168 tid_bitmap &= ~BIT(tid); 1169 } 1170 1171 /* If all TIDs in the queue are inactive - return it can be reused */ 1172 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1173 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1174 return true; 1175 } 1176 1177 /* 1178 * If we are here, this is a shared queue and not all TIDs timed-out. 1179 * Remove the ones that did. 1180 */ 1181 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1182 u16 q_tid_bitmap; 1183 1184 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1185 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1186 1187 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1188 1189 /* 1190 * We need to take into account a situation in which a TXQ was 1191 * allocated to TID x, and then turned shared by adding TIDs y 1192 * and z. If TID x becomes inactive and is removed from the TXQ, 1193 * ownership must be given to one of the remaining TIDs. 1194 * This is mainly because if TID x continues - a new queue can't 1195 * be allocated for it as long as it is an owner of another TXQ. 1196 * 1197 * Mark this queue in the right bitmap, we'll send the command 1198 * to the firmware later. 1199 */ 1200 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1201 set_bit(queue, changetid_queues); 1202 1203 IWL_DEBUG_TX_QUEUES(mvm, 1204 "Removing inactive TID %d from shared Q:%d\n", 1205 tid, queue); 1206 } 1207 1208 IWL_DEBUG_TX_QUEUES(mvm, 1209 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1210 mvm->queue_info[queue].tid_bitmap); 1211 1212 /* 1213 * There may be different TIDs with the same mac queues, so make 1214 * sure all TIDs have existing corresponding mac queues enabled 1215 */ 1216 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1217 1218 /* If the queue is marked as shared - "unshare" it */ 1219 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1220 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1221 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1222 queue); 1223 set_bit(queue, unshare_queues); 1224 } 1225 1226 return false; 1227 } 1228 1229 /* 1230 * Check for inactivity - this includes checking if any queue 1231 * can be unshared and finding one (and only one) that can be 1232 * reused. 1233 * This function is also invoked as a sort of clean-up task, 1234 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1235 * 1236 * Returns the queue number, or -ENOSPC. 1237 */ 1238 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1239 { 1240 unsigned long now = jiffies; 1241 unsigned long unshare_queues = 0; 1242 unsigned long changetid_queues = 0; 1243 int i, ret, free_queue = -ENOSPC; 1244 struct ieee80211_sta *queue_owner = NULL; 1245 1246 lockdep_assert_held(&mvm->mutex); 1247 1248 if (iwl_mvm_has_new_tx_api(mvm)) 1249 return -ENOSPC; 1250 1251 rcu_read_lock(); 1252 1253 /* we skip the CMD queue below by starting at 1 */ 1254 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1255 1256 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1257 struct ieee80211_sta *sta; 1258 struct iwl_mvm_sta *mvmsta; 1259 u8 sta_id; 1260 int tid; 1261 unsigned long inactive_tid_bitmap = 0; 1262 unsigned long queue_tid_bitmap; 1263 1264 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1265 if (!queue_tid_bitmap) 1266 continue; 1267 1268 /* If TXQ isn't in active use anyway - nothing to do here... */ 1269 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1270 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1271 continue; 1272 1273 /* Check to see if there are inactive TIDs on this queue */ 1274 for_each_set_bit(tid, &queue_tid_bitmap, 1275 IWL_MAX_TID_COUNT + 1) { 1276 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1277 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1278 continue; 1279 1280 inactive_tid_bitmap |= BIT(tid); 1281 } 1282 1283 /* If all TIDs are active - finish check on this queue */ 1284 if (!inactive_tid_bitmap) 1285 continue; 1286 1287 /* 1288 * If we are here - the queue hadn't been served recently and is 1289 * in use 1290 */ 1291 1292 sta_id = mvm->queue_info[i].ra_sta_id; 1293 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1294 1295 /* 1296 * If the STA doesn't exist anymore, it isn't an error. It could 1297 * be that it was removed since getting the queues, and in this 1298 * case it should've inactivated its queues anyway. 1299 */ 1300 if (IS_ERR_OR_NULL(sta)) 1301 continue; 1302 1303 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1304 1305 spin_lock_bh(&mvmsta->lock); 1306 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1307 inactive_tid_bitmap, 1308 &unshare_queues, 1309 &changetid_queues); 1310 if (ret && free_queue < 0) { 1311 queue_owner = sta; 1312 free_queue = i; 1313 } 1314 /* only unlock sta lock - we still need the queue info lock */ 1315 spin_unlock_bh(&mvmsta->lock); 1316 } 1317 1318 1319 /* Reconfigure queues requiring reconfiguation */ 1320 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1321 iwl_mvm_unshare_queue(mvm, i); 1322 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1323 iwl_mvm_change_queue_tid(mvm, i); 1324 1325 rcu_read_unlock(); 1326 1327 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1328 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1329 alloc_for_sta); 1330 if (ret) 1331 return ret; 1332 } 1333 1334 return free_queue; 1335 } 1336 1337 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1338 struct ieee80211_sta *sta, u8 ac, int tid) 1339 { 1340 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1341 struct iwl_trans_txq_scd_cfg cfg = { 1342 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1343 .sta_id = mvmsta->deflink.sta_id, 1344 .tid = tid, 1345 .frame_limit = IWL_FRAME_LIMIT, 1346 }; 1347 unsigned int wdg_timeout = 1348 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1349 int queue = -1; 1350 u16 queue_tmp; 1351 unsigned long disable_agg_tids = 0; 1352 enum iwl_mvm_agg_state queue_state; 1353 bool shared_queue = false, inc_ssn; 1354 int ssn; 1355 unsigned long tfd_queue_mask; 1356 int ret; 1357 1358 lockdep_assert_held(&mvm->mutex); 1359 1360 if (iwl_mvm_has_new_tx_api(mvm)) 1361 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1362 1363 spin_lock_bh(&mvmsta->lock); 1364 tfd_queue_mask = mvmsta->tfd_queue_msk; 1365 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1366 spin_unlock_bh(&mvmsta->lock); 1367 1368 if (tid == IWL_MAX_TID_COUNT) { 1369 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1370 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1371 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1372 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1373 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1374 queue); 1375 1376 /* If no such queue is found, we'll use a DATA queue instead */ 1377 } 1378 1379 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1380 (mvm->queue_info[mvmsta->reserved_queue].status == 1381 IWL_MVM_QUEUE_RESERVED)) { 1382 queue = mvmsta->reserved_queue; 1383 mvm->queue_info[queue].reserved = true; 1384 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1385 } 1386 1387 if (queue < 0) 1388 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1389 IWL_MVM_DQA_MIN_DATA_QUEUE, 1390 IWL_MVM_DQA_MAX_DATA_QUEUE); 1391 if (queue < 0) { 1392 /* try harder - perhaps kill an inactive queue */ 1393 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1394 } 1395 1396 /* No free queue - we'll have to share */ 1397 if (queue <= 0) { 1398 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1399 if (queue > 0) { 1400 shared_queue = true; 1401 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1402 } 1403 } 1404 1405 /* 1406 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1407 * to make sure no one else takes it. 1408 * This will allow avoiding re-acquiring the lock at the end of the 1409 * configuration. On error we'll mark it back as free. 1410 */ 1411 if (queue > 0 && !shared_queue) 1412 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1413 1414 /* This shouldn't happen - out of queues */ 1415 if (WARN_ON(queue <= 0)) { 1416 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1417 tid, cfg.sta_id); 1418 return queue; 1419 } 1420 1421 /* 1422 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1423 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1424 * as aggregatable. 1425 * Mark all DATA queues as allowing to be aggregated at some point 1426 */ 1427 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1428 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1429 1430 IWL_DEBUG_TX_QUEUES(mvm, 1431 "Allocating %squeue #%d to sta %d on tid %d\n", 1432 shared_queue ? "shared " : "", queue, 1433 mvmsta->deflink.sta_id, tid); 1434 1435 if (shared_queue) { 1436 /* Disable any open aggs on this queue */ 1437 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1438 1439 if (disable_agg_tids) { 1440 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1441 queue); 1442 iwl_mvm_invalidate_sta_queue(mvm, queue, 1443 disable_agg_tids, false); 1444 } 1445 } 1446 1447 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1448 1449 /* 1450 * Mark queue as shared in transport if shared 1451 * Note this has to be done after queue enablement because enablement 1452 * can also set this value, and there is no indication there to shared 1453 * queues 1454 */ 1455 if (shared_queue) 1456 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1457 1458 spin_lock_bh(&mvmsta->lock); 1459 /* 1460 * This looks racy, but it is not. We have only one packet for 1461 * this ra/tid in our Tx path since we stop the Qdisc when we 1462 * need to allocate a new TFD queue. 1463 */ 1464 if (inc_ssn) { 1465 mvmsta->tid_data[tid].seq_number += 0x10; 1466 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1467 } 1468 mvmsta->tid_data[tid].txq_id = queue; 1469 mvmsta->tfd_queue_msk |= BIT(queue); 1470 queue_state = mvmsta->tid_data[tid].state; 1471 1472 if (mvmsta->reserved_queue == queue) 1473 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1474 spin_unlock_bh(&mvmsta->lock); 1475 1476 if (!shared_queue) { 1477 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1478 if (ret) 1479 goto out_err; 1480 1481 /* If we need to re-enable aggregations... */ 1482 if (queue_state == IWL_AGG_ON) { 1483 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1484 if (ret) 1485 goto out_err; 1486 } 1487 } else { 1488 /* Redirect queue, if needed */ 1489 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1490 wdg_timeout, false, 1491 iwl_mvm_txq_from_tid(sta, tid)); 1492 if (ret) 1493 goto out_err; 1494 } 1495 1496 return 0; 1497 1498 out_err: 1499 queue_tmp = queue; 1500 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1501 1502 return ret; 1503 } 1504 1505 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1506 { 1507 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1508 add_stream_wk); 1509 1510 mutex_lock(&mvm->mutex); 1511 1512 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1513 1514 while (!list_empty(&mvm->add_stream_txqs)) { 1515 struct iwl_mvm_txq *mvmtxq; 1516 struct ieee80211_txq *txq; 1517 u8 tid; 1518 1519 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1520 struct iwl_mvm_txq, list); 1521 1522 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1523 drv_priv); 1524 tid = txq->tid; 1525 if (tid == IEEE80211_NUM_TIDS) 1526 tid = IWL_MAX_TID_COUNT; 1527 1528 /* 1529 * We can't really do much here, but if this fails we can't 1530 * transmit anyway - so just don't transmit the frame etc. 1531 * and let them back up ... we've tried our best to allocate 1532 * a queue in the function itself. 1533 */ 1534 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1535 spin_lock_bh(&mvm->add_stream_lock); 1536 list_del_init(&mvmtxq->list); 1537 spin_unlock_bh(&mvm->add_stream_lock); 1538 continue; 1539 } 1540 1541 /* now we're ready, any remaining races/concurrency will be 1542 * handled in iwl_mvm_mac_itxq_xmit() 1543 */ 1544 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1545 1546 local_bh_disable(); 1547 spin_lock(&mvm->add_stream_lock); 1548 list_del_init(&mvmtxq->list); 1549 spin_unlock(&mvm->add_stream_lock); 1550 1551 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1552 local_bh_enable(); 1553 } 1554 1555 mutex_unlock(&mvm->mutex); 1556 } 1557 1558 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1559 struct ieee80211_sta *sta, 1560 enum nl80211_iftype vif_type) 1561 { 1562 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1563 int queue; 1564 1565 /* queue reserving is disabled on new TX path */ 1566 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1567 return 0; 1568 1569 /* run the general cleanup/unsharing of queues */ 1570 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1571 1572 /* Make sure we have free resources for this STA */ 1573 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1574 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1575 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1576 IWL_MVM_QUEUE_FREE)) 1577 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1578 else 1579 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1580 IWL_MVM_DQA_MIN_DATA_QUEUE, 1581 IWL_MVM_DQA_MAX_DATA_QUEUE); 1582 if (queue < 0) { 1583 /* try again - this time kick out a queue if needed */ 1584 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1585 if (queue < 0) { 1586 IWL_ERR(mvm, "No available queues for new station\n"); 1587 return -ENOSPC; 1588 } 1589 } 1590 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1591 1592 mvmsta->reserved_queue = queue; 1593 1594 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1595 queue, mvmsta->deflink.sta_id); 1596 1597 return 0; 1598 } 1599 1600 /* 1601 * In DQA mode, after a HW restart the queues should be allocated as before, in 1602 * order to avoid race conditions when there are shared queues. This function 1603 * does the re-mapping and queue allocation. 1604 * 1605 * Note that re-enabling aggregations isn't done in this function. 1606 */ 1607 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1608 struct ieee80211_sta *sta) 1609 { 1610 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1611 unsigned int wdg = 1612 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1613 int i; 1614 struct iwl_trans_txq_scd_cfg cfg = { 1615 .sta_id = mvm_sta->deflink.sta_id, 1616 .frame_limit = IWL_FRAME_LIMIT, 1617 }; 1618 1619 /* Make sure reserved queue is still marked as such (if allocated) */ 1620 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1621 mvm->queue_info[mvm_sta->reserved_queue].status = 1622 IWL_MVM_QUEUE_RESERVED; 1623 1624 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1625 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1626 int txq_id = tid_data->txq_id; 1627 int ac; 1628 1629 if (txq_id == IWL_MVM_INVALID_QUEUE) 1630 continue; 1631 1632 ac = tid_to_mac80211_ac[i]; 1633 1634 if (iwl_mvm_has_new_tx_api(mvm)) { 1635 IWL_DEBUG_TX_QUEUES(mvm, 1636 "Re-mapping sta %d tid %d\n", 1637 mvm_sta->deflink.sta_id, i); 1638 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1639 mvm_sta->deflink.sta_id, 1640 i, wdg); 1641 /* 1642 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1643 * to try again later, we have no other good way of 1644 * failing here 1645 */ 1646 if (txq_id < 0) 1647 txq_id = IWL_MVM_INVALID_QUEUE; 1648 tid_data->txq_id = txq_id; 1649 1650 /* 1651 * Since we don't set the seq number after reset, and HW 1652 * sets it now, FW reset will cause the seq num to start 1653 * at 0 again, so driver will need to update it 1654 * internally as well, so it keeps in sync with real val 1655 */ 1656 tid_data->seq_number = 0; 1657 } else { 1658 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1659 1660 cfg.tid = i; 1661 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1662 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1663 txq_id == 1664 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1665 1666 IWL_DEBUG_TX_QUEUES(mvm, 1667 "Re-mapping sta %d tid %d to queue %d\n", 1668 mvm_sta->deflink.sta_id, i, 1669 txq_id); 1670 1671 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1672 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1673 } 1674 } 1675 } 1676 1677 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1678 struct iwl_mvm_int_sta *sta, 1679 const u8 *addr, 1680 u16 mac_id, u16 color) 1681 { 1682 struct iwl_mvm_add_sta_cmd cmd; 1683 int ret; 1684 u32 status = ADD_STA_SUCCESS; 1685 1686 lockdep_assert_held(&mvm->mutex); 1687 1688 memset(&cmd, 0, sizeof(cmd)); 1689 cmd.sta_id = sta->sta_id; 1690 1691 if (iwl_mvm_has_new_station_api(mvm->fw) && 1692 sta->type == IWL_STA_AUX_ACTIVITY) 1693 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1694 else 1695 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1696 color)); 1697 1698 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1699 cmd.station_type = sta->type; 1700 1701 if (!iwl_mvm_has_new_tx_api(mvm)) 1702 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1703 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1704 1705 if (addr) 1706 memcpy(cmd.addr, addr, ETH_ALEN); 1707 1708 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1709 iwl_mvm_add_sta_cmd_size(mvm), 1710 &cmd, &status); 1711 if (ret) 1712 return ret; 1713 1714 switch (status & IWL_ADD_STA_STATUS_MASK) { 1715 case ADD_STA_SUCCESS: 1716 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1717 return 0; 1718 default: 1719 ret = -EIO; 1720 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1721 status); 1722 break; 1723 } 1724 return ret; 1725 } 1726 1727 /* Initialize driver data of a new sta */ 1728 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1729 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1730 { 1731 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1732 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1733 struct iwl_mvm_rxq_dup_data *dup_data; 1734 int i, ret = 0; 1735 1736 lockdep_assert_held(&mvm->mutex); 1737 1738 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1739 mvmvif->color); 1740 mvm_sta->vif = vif; 1741 1742 /* for MLD sta_id(s) should be allocated for each link before calling 1743 * this function 1744 */ 1745 if (!mvm->mld_api_is_used) { 1746 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1747 return -EINVAL; 1748 1749 mvm_sta->deflink.sta_id = sta_id; 1750 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1751 1752 if (!mvm->trans->trans_cfg->gen2) 1753 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1754 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1755 else 1756 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1757 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1758 } 1759 1760 mvm_sta->tt_tx_protection = false; 1761 mvm_sta->sta_type = sta_type; 1762 1763 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1764 1765 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1766 /* 1767 * Mark all queues for this STA as unallocated and defer TX 1768 * frames until the queue is allocated 1769 */ 1770 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1771 } 1772 1773 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1774 struct iwl_mvm_txq *mvmtxq = 1775 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1776 1777 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1778 INIT_LIST_HEAD(&mvmtxq->list); 1779 atomic_set(&mvmtxq->tx_request, 0); 1780 } 1781 1782 if (iwl_mvm_has_new_rx_api(mvm)) { 1783 int q; 1784 1785 dup_data = kcalloc(mvm->trans->num_rx_queues, 1786 sizeof(*dup_data), GFP_KERNEL); 1787 if (!dup_data) 1788 return -ENOMEM; 1789 /* 1790 * Initialize all the last_seq values to 0xffff which can never 1791 * compare equal to the frame's seq_ctrl in the check in 1792 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1793 * number and fragmented packets don't reach that function. 1794 * 1795 * This thus allows receiving a packet with seqno 0 and the 1796 * retry bit set as the very first packet on a new TID. 1797 */ 1798 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1799 memset(dup_data[q].last_seq, 0xff, 1800 sizeof(dup_data[q].last_seq)); 1801 mvm_sta->dup_data = dup_data; 1802 } 1803 1804 if (!iwl_mvm_has_new_tx_api(mvm)) { 1805 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1806 ieee80211_vif_type_p2p(vif)); 1807 if (ret) 1808 return ret; 1809 } 1810 1811 /* 1812 * if rs is registered with mac80211, then "add station" will be handled 1813 * via the corresponding ops, otherwise need to notify rate scaling here 1814 */ 1815 if (iwl_mvm_has_tlc_offload(mvm)) 1816 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1817 else 1818 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1819 1820 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1821 1822 return 0; 1823 } 1824 1825 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1826 struct ieee80211_vif *vif, 1827 struct ieee80211_sta *sta) 1828 { 1829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1830 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1831 int ret, sta_id; 1832 bool sta_update = false; 1833 unsigned int sta_flags = 0; 1834 1835 lockdep_assert_held(&mvm->mutex); 1836 1837 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1838 sta_id = iwl_mvm_find_free_sta_id(mvm, 1839 ieee80211_vif_type_p2p(vif)); 1840 else 1841 sta_id = mvm_sta->deflink.sta_id; 1842 1843 if (sta_id == IWL_MVM_INVALID_STA) 1844 return -ENOSPC; 1845 1846 spin_lock_init(&mvm_sta->lock); 1847 1848 /* if this is a HW restart re-alloc existing queues */ 1849 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1850 struct iwl_mvm_int_sta tmp_sta = { 1851 .sta_id = sta_id, 1852 .type = mvm_sta->sta_type, 1853 }; 1854 1855 /* First add an empty station since allocating 1856 * a queue requires a valid station 1857 */ 1858 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1859 mvmvif->id, mvmvif->color); 1860 if (ret) 1861 goto err; 1862 1863 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1864 sta_update = true; 1865 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1866 goto update_fw; 1867 } 1868 1869 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1870 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1871 if (ret) 1872 goto err; 1873 1874 update_fw: 1875 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1876 if (ret) 1877 goto err; 1878 1879 if (vif->type == NL80211_IFTYPE_STATION) { 1880 if (!sta->tdls) { 1881 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1882 mvmvif->deflink.ap_sta_id = sta_id; 1883 } else { 1884 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1885 } 1886 } 1887 1888 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1889 1890 return 0; 1891 1892 err: 1893 return ret; 1894 } 1895 1896 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1897 bool drain) 1898 { 1899 struct iwl_mvm_add_sta_cmd cmd = {}; 1900 int ret; 1901 u32 status; 1902 1903 lockdep_assert_held(&mvm->mutex); 1904 1905 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1906 cmd.sta_id = mvmsta->deflink.sta_id; 1907 cmd.add_modify = STA_MODE_MODIFY; 1908 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1909 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1910 1911 status = ADD_STA_SUCCESS; 1912 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1913 iwl_mvm_add_sta_cmd_size(mvm), 1914 &cmd, &status); 1915 if (ret) 1916 return ret; 1917 1918 switch (status & IWL_ADD_STA_STATUS_MASK) { 1919 case ADD_STA_SUCCESS: 1920 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1921 mvmsta->deflink.sta_id); 1922 break; 1923 default: 1924 ret = -EIO; 1925 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1926 mvmsta->deflink.sta_id); 1927 break; 1928 } 1929 1930 return ret; 1931 } 1932 1933 /* 1934 * Remove a station from the FW table. Before sending the command to remove 1935 * the station validate that the station is indeed known to the driver (sanity 1936 * only). 1937 */ 1938 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1939 { 1940 struct ieee80211_sta *sta; 1941 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1942 .sta_id = sta_id, 1943 }; 1944 int ret; 1945 1946 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1947 lockdep_is_held(&mvm->mutex)); 1948 1949 /* Note: internal stations are marked as error values */ 1950 if (!sta) { 1951 IWL_ERR(mvm, "Invalid station id\n"); 1952 return -EINVAL; 1953 } 1954 1955 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1956 sizeof(rm_sta_cmd), &rm_sta_cmd); 1957 if (ret) { 1958 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1959 return ret; 1960 } 1961 1962 return 0; 1963 } 1964 1965 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1966 struct ieee80211_vif *vif, 1967 struct ieee80211_sta *sta) 1968 { 1969 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1970 int i; 1971 1972 lockdep_assert_held(&mvm->mutex); 1973 1974 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1975 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1976 continue; 1977 1978 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 1979 &mvm_sta->tid_data[i].txq_id, i); 1980 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1981 } 1982 1983 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1984 struct iwl_mvm_txq *mvmtxq = 1985 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1986 1987 spin_lock_bh(&mvm->add_stream_lock); 1988 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1989 list_del_init(&mvmtxq->list); 1990 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1991 spin_unlock_bh(&mvm->add_stream_lock); 1992 } 1993 } 1994 1995 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1996 struct iwl_mvm_sta *mvm_sta) 1997 { 1998 int i; 1999 2000 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 2001 u16 txq_id; 2002 int ret; 2003 2004 spin_lock_bh(&mvm_sta->lock); 2005 txq_id = mvm_sta->tid_data[i].txq_id; 2006 spin_unlock_bh(&mvm_sta->lock); 2007 2008 if (txq_id == IWL_MVM_INVALID_QUEUE) 2009 continue; 2010 2011 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2012 if (ret) 2013 return ret; 2014 } 2015 2016 return 0; 2017 } 2018 2019 /* Execute the common part for both MLD and non-MLD modes. 2020 * Returns if we're done with removing the station, either 2021 * with error or success 2022 */ 2023 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2024 struct ieee80211_sta *sta, 2025 struct ieee80211_link_sta *link_sta, int *ret) 2026 { 2027 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2028 struct iwl_mvm_vif_link_info *mvm_link = 2029 mvmvif->link[link_sta->link_id]; 2030 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2031 struct iwl_mvm_link_sta *mvm_link_sta; 2032 u8 sta_id; 2033 2034 lockdep_assert_held(&mvm->mutex); 2035 2036 mvm_link_sta = 2037 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2038 lockdep_is_held(&mvm->mutex)); 2039 sta_id = mvm_link_sta->sta_id; 2040 2041 /* If there is a TXQ still marked as reserved - free it */ 2042 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2043 u8 reserved_txq = mvm_sta->reserved_queue; 2044 enum iwl_mvm_queue_status *status; 2045 2046 /* 2047 * If no traffic has gone through the reserved TXQ - it 2048 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2049 * should be manually marked as free again 2050 */ 2051 status = &mvm->queue_info[reserved_txq].status; 2052 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2053 (*status != IWL_MVM_QUEUE_FREE), 2054 "sta_id %d reserved txq %d status %d", 2055 sta_id, reserved_txq, *status)) { 2056 *ret = -EINVAL; 2057 return true; 2058 } 2059 2060 *status = IWL_MVM_QUEUE_FREE; 2061 } 2062 2063 if (vif->type == NL80211_IFTYPE_STATION && 2064 mvm_link->ap_sta_id == sta_id) { 2065 /* if associated - we can't remove the AP STA now */ 2066 if (vif->cfg.assoc) 2067 return true; 2068 2069 /* first remove remaining keys */ 2070 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2071 2072 /* unassoc - go ahead - remove the AP STA now */ 2073 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2074 } 2075 2076 /* 2077 * This shouldn't happen - the TDLS channel switch should be canceled 2078 * before the STA is removed. 2079 */ 2080 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2081 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2082 cancel_delayed_work(&mvm->tdls_cs.dwork); 2083 } 2084 2085 return false; 2086 } 2087 2088 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2089 struct ieee80211_vif *vif, 2090 struct ieee80211_sta *sta) 2091 { 2092 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2093 int ret; 2094 2095 lockdep_assert_held(&mvm->mutex); 2096 2097 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2098 if (ret) 2099 return ret; 2100 2101 /* flush its queues here since we are freeing mvm_sta */ 2102 ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id, 2103 mvm_sta->tfd_queue_msk); 2104 if (ret) 2105 return ret; 2106 if (iwl_mvm_has_new_tx_api(mvm)) { 2107 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2108 } else { 2109 u32 q_mask = mvm_sta->tfd_queue_msk; 2110 2111 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2112 q_mask); 2113 } 2114 if (ret) 2115 return ret; 2116 2117 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2118 2119 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2120 2121 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2122 return ret; 2123 2124 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2125 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2126 2127 return ret; 2128 } 2129 2130 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2131 struct ieee80211_vif *vif, 2132 u8 sta_id) 2133 { 2134 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2135 2136 lockdep_assert_held(&mvm->mutex); 2137 2138 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2139 return ret; 2140 } 2141 2142 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2143 struct iwl_mvm_int_sta *sta, 2144 u32 qmask, enum nl80211_iftype iftype, 2145 u8 type) 2146 { 2147 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2148 sta->sta_id == IWL_MVM_INVALID_STA) { 2149 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2150 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2151 return -ENOSPC; 2152 } 2153 2154 sta->tfd_queue_msk = qmask; 2155 sta->type = type; 2156 2157 /* put a non-NULL value so iterating over the stations won't stop */ 2158 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2159 return 0; 2160 } 2161 2162 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2163 { 2164 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2165 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2166 sta->sta_id = IWL_MVM_INVALID_STA; 2167 } 2168 2169 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2170 u8 sta_id, u8 fifo) 2171 { 2172 unsigned int wdg_timeout = 2173 mvm->trans->trans_cfg->base_params->wd_timeout; 2174 struct iwl_trans_txq_scd_cfg cfg = { 2175 .fifo = fifo, 2176 .sta_id = sta_id, 2177 .tid = IWL_MAX_TID_COUNT, 2178 .aggregate = false, 2179 .frame_limit = IWL_FRAME_LIMIT, 2180 }; 2181 2182 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2183 2184 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2185 } 2186 2187 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2188 { 2189 unsigned int wdg_timeout = 2190 mvm->trans->trans_cfg->base_params->wd_timeout; 2191 2192 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2193 2194 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2195 wdg_timeout); 2196 } 2197 2198 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2199 int maccolor, u8 *addr, 2200 struct iwl_mvm_int_sta *sta, 2201 u16 *queue, int fifo) 2202 { 2203 int ret; 2204 2205 /* Map queue to fifo - needs to happen before adding station */ 2206 if (!iwl_mvm_has_new_tx_api(mvm)) 2207 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2208 2209 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2210 if (ret) { 2211 if (!iwl_mvm_has_new_tx_api(mvm)) 2212 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2213 IWL_MAX_TID_COUNT); 2214 return ret; 2215 } 2216 2217 /* 2218 * For 22000 firmware and on we cannot add queue to a station unknown 2219 * to firmware so enable queue here - after the station was added 2220 */ 2221 if (iwl_mvm_has_new_tx_api(mvm)) { 2222 int txq; 2223 2224 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2225 if (txq < 0) { 2226 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2227 return txq; 2228 } 2229 2230 *queue = txq; 2231 } 2232 2233 return 0; 2234 } 2235 2236 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2237 { 2238 int ret; 2239 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2240 BIT(mvm->aux_queue); 2241 2242 lockdep_assert_held(&mvm->mutex); 2243 2244 /* Allocate aux station and assign to it the aux queue */ 2245 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2246 NL80211_IFTYPE_UNSPECIFIED, 2247 IWL_STA_AUX_ACTIVITY); 2248 if (ret) 2249 return ret; 2250 2251 /* 2252 * In CDB NICs we need to specify which lmac to use for aux activity 2253 * using the mac_id argument place to send lmac_id to the function 2254 */ 2255 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2256 &mvm->aux_sta, &mvm->aux_queue, 2257 IWL_MVM_TX_FIFO_MCAST); 2258 if (ret) { 2259 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2260 return ret; 2261 } 2262 2263 return 0; 2264 } 2265 2266 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2267 { 2268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2269 2270 lockdep_assert_held(&mvm->mutex); 2271 2272 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2273 NULL, &mvm->snif_sta, 2274 &mvm->snif_queue, 2275 IWL_MVM_TX_FIFO_BE); 2276 } 2277 2278 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2279 { 2280 int ret; 2281 2282 lockdep_assert_held(&mvm->mutex); 2283 2284 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2285 return -EINVAL; 2286 2287 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2288 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2289 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2290 if (ret) 2291 IWL_WARN(mvm, "Failed sending remove station\n"); 2292 2293 return ret; 2294 } 2295 2296 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2297 { 2298 int ret; 2299 2300 lockdep_assert_held(&mvm->mutex); 2301 2302 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2303 return -EINVAL; 2304 2305 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2306 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2307 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2308 if (ret) 2309 IWL_WARN(mvm, "Failed sending remove station\n"); 2310 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2311 2312 return ret; 2313 } 2314 2315 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2316 { 2317 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2318 } 2319 2320 /* 2321 * Send the add station command for the vif's broadcast station. 2322 * Assumes that the station was already allocated. 2323 * 2324 * @mvm: the mvm component 2325 * @vif: the interface to which the broadcast station is added 2326 * @bsta: the broadcast station to add. 2327 */ 2328 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2329 { 2330 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2331 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2332 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2333 const u8 *baddr = _baddr; 2334 int queue; 2335 int ret; 2336 unsigned int wdg_timeout = 2337 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2338 struct iwl_trans_txq_scd_cfg cfg = { 2339 .fifo = IWL_MVM_TX_FIFO_VO, 2340 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2341 .tid = IWL_MAX_TID_COUNT, 2342 .aggregate = false, 2343 .frame_limit = IWL_FRAME_LIMIT, 2344 }; 2345 2346 lockdep_assert_held(&mvm->mutex); 2347 2348 if (!iwl_mvm_has_new_tx_api(mvm)) { 2349 if (vif->type == NL80211_IFTYPE_AP || 2350 vif->type == NL80211_IFTYPE_ADHOC) { 2351 queue = mvm->probe_queue; 2352 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2353 queue = mvm->p2p_dev_queue; 2354 } else { 2355 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2356 return -EINVAL; 2357 } 2358 2359 bsta->tfd_queue_msk |= BIT(queue); 2360 2361 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2362 } 2363 2364 if (vif->type == NL80211_IFTYPE_ADHOC) 2365 baddr = vif->bss_conf.bssid; 2366 2367 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2368 return -ENOSPC; 2369 2370 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2371 mvmvif->id, mvmvif->color); 2372 if (ret) 2373 return ret; 2374 2375 /* 2376 * For 22000 firmware and on we cannot add queue to a station unknown 2377 * to firmware so enable queue here - after the station was added 2378 */ 2379 if (iwl_mvm_has_new_tx_api(mvm)) { 2380 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2381 IWL_MAX_TID_COUNT, 2382 wdg_timeout); 2383 if (queue < 0) { 2384 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2385 return queue; 2386 } 2387 2388 if (vif->type == NL80211_IFTYPE_AP || 2389 vif->type == NL80211_IFTYPE_ADHOC) { 2390 /* for queue management */ 2391 mvm->probe_queue = queue; 2392 /* for use in TX */ 2393 mvmvif->deflink.mgmt_queue = queue; 2394 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2395 mvm->p2p_dev_queue = queue; 2396 } 2397 } else if (vif->type == NL80211_IFTYPE_AP || 2398 vif->type == NL80211_IFTYPE_ADHOC) { 2399 /* set it for use in TX */ 2400 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2401 } 2402 2403 return 0; 2404 } 2405 2406 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2407 struct ieee80211_vif *vif) 2408 { 2409 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2410 u16 *queueptr, queue; 2411 2412 lockdep_assert_held(&mvm->mutex); 2413 2414 iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id, 2415 mvmvif->deflink.bcast_sta.tfd_queue_msk); 2416 2417 switch (vif->type) { 2418 case NL80211_IFTYPE_AP: 2419 case NL80211_IFTYPE_ADHOC: 2420 queueptr = &mvm->probe_queue; 2421 break; 2422 case NL80211_IFTYPE_P2P_DEVICE: 2423 queueptr = &mvm->p2p_dev_queue; 2424 break; 2425 default: 2426 WARN(1, "Can't free bcast queue on vif type %d\n", 2427 vif->type); 2428 return; 2429 } 2430 2431 queue = *queueptr; 2432 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2433 queueptr, IWL_MAX_TID_COUNT); 2434 2435 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2436 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2437 2438 if (iwl_mvm_has_new_tx_api(mvm)) 2439 return; 2440 2441 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2442 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2443 } 2444 2445 /* Send the FW a request to remove the station from it's internal data 2446 * structures, but DO NOT remove the entry from the local data structures. */ 2447 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2448 { 2449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2450 int ret; 2451 2452 lockdep_assert_held(&mvm->mutex); 2453 2454 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2455 2456 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2457 if (ret) 2458 IWL_WARN(mvm, "Failed sending remove station\n"); 2459 return ret; 2460 } 2461 2462 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2463 { 2464 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2465 2466 lockdep_assert_held(&mvm->mutex); 2467 2468 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2469 ieee80211_vif_type_p2p(vif), 2470 IWL_STA_GENERAL_PURPOSE); 2471 } 2472 2473 /* Allocate a new station entry for the broadcast station to the given vif, 2474 * and send it to the FW. 2475 * Note that each P2P mac should have its own broadcast station. 2476 * 2477 * @mvm: the mvm component 2478 * @vif: the interface to which the broadcast station is added 2479 * @bsta: the broadcast station to add. */ 2480 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2481 { 2482 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2483 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2484 int ret; 2485 2486 lockdep_assert_held(&mvm->mutex); 2487 2488 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2489 if (ret) 2490 return ret; 2491 2492 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2493 2494 if (ret) 2495 iwl_mvm_dealloc_int_sta(mvm, bsta); 2496 2497 return ret; 2498 } 2499 2500 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2501 { 2502 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2503 2504 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2505 } 2506 2507 /* 2508 * Send the FW a request to remove the station from it's internal data 2509 * structures, and in addition remove it from the local data structure. 2510 */ 2511 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2512 { 2513 int ret; 2514 2515 lockdep_assert_held(&mvm->mutex); 2516 2517 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2518 2519 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2520 2521 return ret; 2522 } 2523 2524 /* 2525 * Allocate a new station entry for the multicast station to the given vif, 2526 * and send it to the FW. 2527 * Note that each AP/GO mac should have its own multicast station. 2528 * 2529 * @mvm: the mvm component 2530 * @vif: the interface to which the multicast station is added 2531 */ 2532 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2533 { 2534 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2535 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2536 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2537 const u8 *maddr = _maddr; 2538 struct iwl_trans_txq_scd_cfg cfg = { 2539 .fifo = vif->type == NL80211_IFTYPE_AP ? 2540 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2541 .sta_id = msta->sta_id, 2542 .tid = 0, 2543 .aggregate = false, 2544 .frame_limit = IWL_FRAME_LIMIT, 2545 }; 2546 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2547 int ret; 2548 2549 lockdep_assert_held(&mvm->mutex); 2550 2551 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2552 vif->type != NL80211_IFTYPE_ADHOC)) 2553 return -EOPNOTSUPP; 2554 2555 /* 2556 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2557 * invalid, so make sure we use the queue we want. 2558 * Note that this is done here as we want to avoid making DQA 2559 * changes in mac80211 layer. 2560 */ 2561 if (vif->type == NL80211_IFTYPE_ADHOC) 2562 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2563 2564 /* 2565 * While in previous FWs we had to exclude cab queue from TFD queue 2566 * mask, now it is needed as any other queue. 2567 */ 2568 if (!iwl_mvm_has_new_tx_api(mvm) && 2569 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2570 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2571 &cfg, 2572 timeout); 2573 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2574 } 2575 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2576 mvmvif->id, mvmvif->color); 2577 if (ret) 2578 goto err; 2579 2580 /* 2581 * Enable cab queue after the ADD_STA command is sent. 2582 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2583 * command with unknown station id, and for FW that doesn't support 2584 * station API since the cab queue is not included in the 2585 * tfd_queue_mask. 2586 */ 2587 if (iwl_mvm_has_new_tx_api(mvm)) { 2588 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2589 0, timeout); 2590 if (queue < 0) { 2591 ret = queue; 2592 goto err; 2593 } 2594 mvmvif->deflink.cab_queue = queue; 2595 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2596 IWL_UCODE_TLV_API_STA_TYPE)) 2597 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2598 &cfg, 2599 timeout); 2600 2601 return 0; 2602 err: 2603 iwl_mvm_dealloc_int_sta(mvm, msta); 2604 return ret; 2605 } 2606 2607 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2608 struct ieee80211_key_conf *keyconf, 2609 bool mcast) 2610 { 2611 union { 2612 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2613 struct iwl_mvm_add_sta_key_cmd cmd; 2614 } u = {}; 2615 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2616 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2617 __le16 key_flags; 2618 int ret, size; 2619 u32 status; 2620 2621 /* This is a valid situation for GTK removal */ 2622 if (sta_id == IWL_MVM_INVALID_STA) 2623 return 0; 2624 2625 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2626 STA_KEY_FLG_KEYID_MSK); 2627 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2628 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2629 2630 if (mcast) 2631 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2632 2633 /* 2634 * The fields assigned here are in the same location at the start 2635 * of the command, so we can do this union trick. 2636 */ 2637 u.cmd.common.key_flags = key_flags; 2638 u.cmd.common.key_offset = keyconf->hw_key_idx; 2639 u.cmd.common.sta_id = sta_id; 2640 2641 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2642 2643 status = ADD_STA_SUCCESS; 2644 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2645 &status); 2646 2647 switch (status) { 2648 case ADD_STA_SUCCESS: 2649 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2650 break; 2651 default: 2652 ret = -EIO; 2653 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2654 break; 2655 } 2656 2657 return ret; 2658 } 2659 2660 /* 2661 * Send the FW a request to remove the station from it's internal data 2662 * structures, and in addition remove it from the local data structure. 2663 */ 2664 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2665 { 2666 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2667 int ret; 2668 2669 lockdep_assert_held(&mvm->mutex); 2670 2671 iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id, 2672 mvmvif->deflink.mcast_sta.tfd_queue_msk); 2673 2674 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2675 &mvmvif->deflink.cab_queue, 0); 2676 2677 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2678 if (ret) 2679 IWL_WARN(mvm, "Failed sending remove station\n"); 2680 2681 return ret; 2682 } 2683 2684 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2685 { 2686 struct iwl_mvm_delba_data notif = { 2687 .baid = baid, 2688 }; 2689 2690 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2691 ¬if, sizeof(notif)); 2692 }; 2693 2694 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2695 struct iwl_mvm_baid_data *data) 2696 { 2697 int i; 2698 2699 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2700 2701 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2702 int j; 2703 struct iwl_mvm_reorder_buffer *reorder_buf = 2704 &data->reorder_buf[i]; 2705 struct iwl_mvm_reorder_buf_entry *entries = 2706 &data->entries[i * data->entries_per_queue]; 2707 2708 spin_lock_bh(&reorder_buf->lock); 2709 if (likely(!reorder_buf->num_stored)) { 2710 spin_unlock_bh(&reorder_buf->lock); 2711 continue; 2712 } 2713 2714 /* 2715 * This shouldn't happen in regular DELBA since the internal 2716 * delBA notification should trigger a release of all frames in 2717 * the reorder buffer. 2718 */ 2719 WARN_ON(1); 2720 2721 for (j = 0; j < reorder_buf->buf_size; j++) 2722 __skb_queue_purge(&entries[j].frames); 2723 2724 spin_unlock_bh(&reorder_buf->lock); 2725 } 2726 } 2727 2728 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2729 struct iwl_mvm_baid_data *data, 2730 u16 ssn, u16 buf_size) 2731 { 2732 int i; 2733 2734 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2735 struct iwl_mvm_reorder_buffer *reorder_buf = 2736 &data->reorder_buf[i]; 2737 struct iwl_mvm_reorder_buf_entry *entries = 2738 &data->entries[i * data->entries_per_queue]; 2739 int j; 2740 2741 reorder_buf->num_stored = 0; 2742 reorder_buf->head_sn = ssn; 2743 reorder_buf->buf_size = buf_size; 2744 spin_lock_init(&reorder_buf->lock); 2745 reorder_buf->mvm = mvm; 2746 reorder_buf->queue = i; 2747 reorder_buf->valid = false; 2748 for (j = 0; j < reorder_buf->buf_size; j++) 2749 __skb_queue_head_init(&entries[j].frames); 2750 } 2751 } 2752 2753 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2754 struct ieee80211_sta *sta, 2755 bool start, int tid, u16 ssn, 2756 u16 buf_size) 2757 { 2758 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2759 struct iwl_mvm_add_sta_cmd cmd = { 2760 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2761 .sta_id = mvm_sta->deflink.sta_id, 2762 .add_modify = STA_MODE_MODIFY, 2763 }; 2764 u32 status; 2765 int ret; 2766 2767 if (start) { 2768 cmd.add_immediate_ba_tid = tid; 2769 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2770 cmd.rx_ba_window = cpu_to_le16(buf_size); 2771 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2772 } else { 2773 cmd.remove_immediate_ba_tid = tid; 2774 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2775 } 2776 2777 status = ADD_STA_SUCCESS; 2778 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2779 iwl_mvm_add_sta_cmd_size(mvm), 2780 &cmd, &status); 2781 if (ret) 2782 return ret; 2783 2784 switch (status & IWL_ADD_STA_STATUS_MASK) { 2785 case ADD_STA_SUCCESS: 2786 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2787 start ? "start" : "stopp"); 2788 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2789 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2790 return -EINVAL; 2791 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2792 case ADD_STA_IMMEDIATE_BA_FAILURE: 2793 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2794 return -ENOSPC; 2795 default: 2796 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2797 start ? "start" : "stopp", status); 2798 return -EIO; 2799 } 2800 } 2801 2802 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2803 struct ieee80211_sta *sta, 2804 bool start, int tid, u16 ssn, 2805 u16 buf_size, int baid) 2806 { 2807 struct iwl_rx_baid_cfg_cmd cmd = { 2808 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2809 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2810 }; 2811 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2812 int ret; 2813 2814 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2815 2816 if (start) { 2817 cmd.alloc.sta_id_mask = 2818 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2819 cmd.alloc.tid = tid; 2820 cmd.alloc.ssn = cpu_to_le16(ssn); 2821 cmd.alloc.win_size = cpu_to_le16(buf_size); 2822 baid = -EIO; 2823 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2824 cmd.remove_v1.baid = cpu_to_le32(baid); 2825 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2826 } else { 2827 cmd.remove.sta_id_mask = 2828 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2829 cmd.remove.tid = cpu_to_le32(tid); 2830 } 2831 2832 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2833 &cmd, &baid); 2834 if (ret) 2835 return ret; 2836 2837 if (!start) { 2838 /* ignore firmware baid on remove */ 2839 baid = 0; 2840 } 2841 2842 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2843 start ? "start" : "stopp"); 2844 2845 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2846 return -EINVAL; 2847 2848 return baid; 2849 } 2850 2851 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2852 bool start, int tid, u16 ssn, u16 buf_size, 2853 int baid) 2854 { 2855 if (fw_has_capa(&mvm->fw->ucode_capa, 2856 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2857 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2858 tid, ssn, buf_size, baid); 2859 2860 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2861 tid, ssn, buf_size); 2862 } 2863 2864 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2865 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2866 { 2867 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2868 struct iwl_mvm_baid_data *baid_data = NULL; 2869 int ret, baid; 2870 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2871 IWL_MAX_BAID_OLD; 2872 2873 lockdep_assert_held(&mvm->mutex); 2874 2875 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2876 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2877 return -ENOSPC; 2878 } 2879 2880 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2881 u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2882 2883 /* sparse doesn't like the __align() so don't check */ 2884 #ifndef __CHECKER__ 2885 /* 2886 * The division below will be OK if either the cache line size 2887 * can be divided by the entry size (ALIGN will round up) or if 2888 * if the entry size can be divided by the cache line size, in 2889 * which case the ALIGN() will do nothing. 2890 */ 2891 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2892 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2893 #endif 2894 2895 /* 2896 * Upward align the reorder buffer size to fill an entire cache 2897 * line for each queue, to avoid sharing cache lines between 2898 * different queues. 2899 */ 2900 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2901 2902 /* 2903 * Allocate here so if allocation fails we can bail out early 2904 * before starting the BA session in the firmware 2905 */ 2906 baid_data = kzalloc(sizeof(*baid_data) + 2907 mvm->trans->num_rx_queues * 2908 reorder_buf_size, 2909 GFP_KERNEL); 2910 if (!baid_data) 2911 return -ENOMEM; 2912 2913 /* 2914 * This division is why we need the above BUILD_BUG_ON(), 2915 * if that doesn't hold then this will not be right. 2916 */ 2917 baid_data->entries_per_queue = 2918 reorder_buf_size / sizeof(baid_data->entries[0]); 2919 } 2920 2921 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2922 baid = mvm_sta->tid_to_baid[tid]; 2923 } else { 2924 /* we don't really need it in this case */ 2925 baid = -1; 2926 } 2927 2928 /* Don't send command to remove (start=0) BAID during restart */ 2929 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2930 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2931 baid); 2932 2933 if (baid < 0) { 2934 ret = baid; 2935 goto out_free; 2936 } 2937 2938 if (start) { 2939 mvm->rx_ba_sessions++; 2940 2941 if (!iwl_mvm_has_new_rx_api(mvm)) 2942 return 0; 2943 2944 baid_data->baid = baid; 2945 baid_data->timeout = timeout; 2946 baid_data->last_rx = jiffies; 2947 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2948 timer_setup(&baid_data->session_timer, 2949 iwl_mvm_rx_agg_session_expired, 0); 2950 baid_data->mvm = mvm; 2951 baid_data->tid = tid; 2952 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2953 2954 mvm_sta->tid_to_baid[tid] = baid; 2955 if (timeout) 2956 mod_timer(&baid_data->session_timer, 2957 TU_TO_EXP_TIME(timeout * 2)); 2958 2959 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2960 /* 2961 * protect the BA data with RCU to cover a case where our 2962 * internal RX sync mechanism will timeout (not that it's 2963 * supposed to happen) and we will free the session data while 2964 * RX is being processed in parallel 2965 */ 2966 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2967 mvm_sta->deflink.sta_id, tid, baid); 2968 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2969 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2970 } else { 2971 baid = mvm_sta->tid_to_baid[tid]; 2972 2973 if (mvm->rx_ba_sessions > 0) 2974 /* check that restart flow didn't zero the counter */ 2975 mvm->rx_ba_sessions--; 2976 if (!iwl_mvm_has_new_rx_api(mvm)) 2977 return 0; 2978 2979 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2980 return -EINVAL; 2981 2982 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2983 if (WARN_ON(!baid_data)) 2984 return -EINVAL; 2985 2986 /* synchronize all rx queues so we can safely delete */ 2987 iwl_mvm_free_reorder(mvm, baid_data); 2988 timer_shutdown_sync(&baid_data->session_timer); 2989 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2990 kfree_rcu(baid_data, rcu_head); 2991 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2992 2993 /* 2994 * After we've deleted it, do another queue sync 2995 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2996 * running it won't find a new session in the old 2997 * BAID. It can find the NULL pointer for the BAID, 2998 * but we must not have it find a different session. 2999 */ 3000 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 3001 true, NULL, 0); 3002 } 3003 return 0; 3004 3005 out_free: 3006 kfree(baid_data); 3007 return ret; 3008 } 3009 3010 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3011 int tid, u8 queue, bool start) 3012 { 3013 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3014 struct iwl_mvm_add_sta_cmd cmd = {}; 3015 int ret; 3016 u32 status; 3017 3018 lockdep_assert_held(&mvm->mutex); 3019 3020 if (start) { 3021 mvm_sta->tfd_queue_msk |= BIT(queue); 3022 mvm_sta->tid_disable_agg &= ~BIT(tid); 3023 } else { 3024 /* In DQA-mode the queue isn't removed on agg termination */ 3025 mvm_sta->tid_disable_agg |= BIT(tid); 3026 } 3027 3028 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3029 cmd.sta_id = mvm_sta->deflink.sta_id; 3030 cmd.add_modify = STA_MODE_MODIFY; 3031 if (!iwl_mvm_has_new_tx_api(mvm)) 3032 cmd.modify_mask = STA_MODIFY_QUEUES; 3033 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3034 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3035 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3036 3037 status = ADD_STA_SUCCESS; 3038 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3039 iwl_mvm_add_sta_cmd_size(mvm), 3040 &cmd, &status); 3041 if (ret) 3042 return ret; 3043 3044 switch (status & IWL_ADD_STA_STATUS_MASK) { 3045 case ADD_STA_SUCCESS: 3046 break; 3047 default: 3048 ret = -EIO; 3049 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3050 start ? "start" : "stopp", status); 3051 break; 3052 } 3053 3054 return ret; 3055 } 3056 3057 const u8 tid_to_mac80211_ac[] = { 3058 IEEE80211_AC_BE, 3059 IEEE80211_AC_BK, 3060 IEEE80211_AC_BK, 3061 IEEE80211_AC_BE, 3062 IEEE80211_AC_VI, 3063 IEEE80211_AC_VI, 3064 IEEE80211_AC_VO, 3065 IEEE80211_AC_VO, 3066 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3067 }; 3068 3069 static const u8 tid_to_ucode_ac[] = { 3070 AC_BE, 3071 AC_BK, 3072 AC_BK, 3073 AC_BE, 3074 AC_VI, 3075 AC_VI, 3076 AC_VO, 3077 AC_VO, 3078 }; 3079 3080 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3081 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3082 { 3083 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3084 struct iwl_mvm_tid_data *tid_data; 3085 u16 normalized_ssn; 3086 u16 txq_id; 3087 int ret; 3088 3089 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3090 return -EINVAL; 3091 3092 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3093 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3094 IWL_ERR(mvm, 3095 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3096 mvmsta->tid_data[tid].state); 3097 return -ENXIO; 3098 } 3099 3100 lockdep_assert_held(&mvm->mutex); 3101 3102 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3103 iwl_mvm_has_new_tx_api(mvm)) { 3104 u8 ac = tid_to_mac80211_ac[tid]; 3105 3106 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3107 if (ret) 3108 return ret; 3109 } 3110 3111 spin_lock_bh(&mvmsta->lock); 3112 3113 /* 3114 * Note the possible cases: 3115 * 1. An enabled TXQ - TXQ needs to become agg'ed 3116 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3117 * it as reserved 3118 */ 3119 txq_id = mvmsta->tid_data[tid].txq_id; 3120 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3121 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3122 IWL_MVM_DQA_MIN_DATA_QUEUE, 3123 IWL_MVM_DQA_MAX_DATA_QUEUE); 3124 if (ret < 0) { 3125 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3126 goto out; 3127 } 3128 3129 txq_id = ret; 3130 3131 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3132 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3133 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3134 ret = -ENXIO; 3135 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3136 tid, IWL_MAX_HW_QUEUES - 1); 3137 goto out; 3138 3139 } else if (unlikely(mvm->queue_info[txq_id].status == 3140 IWL_MVM_QUEUE_SHARED)) { 3141 ret = -ENXIO; 3142 IWL_DEBUG_TX_QUEUES(mvm, 3143 "Can't start tid %d agg on shared queue!\n", 3144 tid); 3145 goto out; 3146 } 3147 3148 IWL_DEBUG_TX_QUEUES(mvm, 3149 "AGG for tid %d will be on queue #%d\n", 3150 tid, txq_id); 3151 3152 tid_data = &mvmsta->tid_data[tid]; 3153 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3154 tid_data->txq_id = txq_id; 3155 *ssn = tid_data->ssn; 3156 3157 IWL_DEBUG_TX_QUEUES(mvm, 3158 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3159 mvmsta->deflink.sta_id, tid, txq_id, 3160 tid_data->ssn, 3161 tid_data->next_reclaimed); 3162 3163 /* 3164 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3165 * to align the wrap around of ssn so we compare relevant values. 3166 */ 3167 normalized_ssn = tid_data->ssn; 3168 if (mvm->trans->trans_cfg->gen2) 3169 normalized_ssn &= 0xff; 3170 3171 if (normalized_ssn == tid_data->next_reclaimed) { 3172 tid_data->state = IWL_AGG_STARTING; 3173 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3174 } else { 3175 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3176 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3177 } 3178 3179 out: 3180 spin_unlock_bh(&mvmsta->lock); 3181 3182 return ret; 3183 } 3184 3185 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3186 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3187 bool amsdu) 3188 { 3189 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3190 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3191 unsigned int wdg_timeout = 3192 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3193 int queue, ret; 3194 bool alloc_queue = true; 3195 enum iwl_mvm_queue_status queue_status; 3196 u16 ssn; 3197 3198 struct iwl_trans_txq_scd_cfg cfg = { 3199 .sta_id = mvmsta->deflink.sta_id, 3200 .tid = tid, 3201 .frame_limit = buf_size, 3202 .aggregate = true, 3203 }; 3204 3205 /* 3206 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3207 * manager, so this function should never be called in this case. 3208 */ 3209 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3210 return -EINVAL; 3211 3212 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3213 != IWL_MAX_TID_COUNT); 3214 3215 spin_lock_bh(&mvmsta->lock); 3216 ssn = tid_data->ssn; 3217 queue = tid_data->txq_id; 3218 tid_data->state = IWL_AGG_ON; 3219 mvmsta->agg_tids |= BIT(tid); 3220 tid_data->ssn = 0xffff; 3221 tid_data->amsdu_in_ampdu_allowed = amsdu; 3222 spin_unlock_bh(&mvmsta->lock); 3223 3224 if (iwl_mvm_has_new_tx_api(mvm)) { 3225 /* 3226 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3227 * would have failed, so if we are here there is no need to 3228 * allocate a queue. 3229 * However, if aggregation size is different than the default 3230 * size, the scheduler should be reconfigured. 3231 * We cannot do this with the new TX API, so return unsupported 3232 * for now, until it will be offloaded to firmware.. 3233 * Note that if SCD default value changes - this condition 3234 * should be updated as well. 3235 */ 3236 if (buf_size < IWL_FRAME_LIMIT) 3237 return -EOPNOTSUPP; 3238 3239 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3240 if (ret) 3241 return -EIO; 3242 goto out; 3243 } 3244 3245 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3246 3247 queue_status = mvm->queue_info[queue].status; 3248 3249 /* Maybe there is no need to even alloc a queue... */ 3250 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3251 alloc_queue = false; 3252 3253 /* 3254 * Only reconfig the SCD for the queue if the window size has 3255 * changed from current (become smaller) 3256 */ 3257 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3258 /* 3259 * If reconfiguring an existing queue, it first must be 3260 * drained 3261 */ 3262 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3263 BIT(queue)); 3264 if (ret) { 3265 IWL_ERR(mvm, 3266 "Error draining queue before reconfig\n"); 3267 return ret; 3268 } 3269 3270 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3271 mvmsta->deflink.sta_id, tid, 3272 buf_size, ssn); 3273 if (ret) { 3274 IWL_ERR(mvm, 3275 "Error reconfiguring TXQ #%d\n", queue); 3276 return ret; 3277 } 3278 } 3279 3280 if (alloc_queue) 3281 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3282 &cfg, wdg_timeout); 3283 3284 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3285 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3286 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3287 if (ret) 3288 return -EIO; 3289 } 3290 3291 /* No need to mark as reserved */ 3292 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3293 3294 out: 3295 /* 3296 * Even though in theory the peer could have different 3297 * aggregation reorder buffer sizes for different sessions, 3298 * our ucode doesn't allow for that and has a global limit 3299 * for each station. Therefore, use the minimum of all the 3300 * aggregation sessions and our default value. 3301 */ 3302 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3303 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3304 buf_size); 3305 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3306 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3307 3308 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3309 sta->addr, tid); 3310 3311 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3312 } 3313 3314 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3315 struct iwl_mvm_sta *mvmsta, 3316 struct iwl_mvm_tid_data *tid_data) 3317 { 3318 u16 txq_id = tid_data->txq_id; 3319 3320 lockdep_assert_held(&mvm->mutex); 3321 3322 if (iwl_mvm_has_new_tx_api(mvm)) 3323 return; 3324 3325 /* 3326 * The TXQ is marked as reserved only if no traffic came through yet 3327 * This means no traffic has been sent on this TID (agg'd or not), so 3328 * we no longer have use for the queue. Since it hasn't even been 3329 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3330 * free. 3331 */ 3332 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3333 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3334 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3335 } 3336 } 3337 3338 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3339 struct ieee80211_sta *sta, u16 tid) 3340 { 3341 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3342 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3343 u16 txq_id; 3344 int err; 3345 3346 /* 3347 * If mac80211 is cleaning its state, then say that we finished since 3348 * our state has been cleared anyway. 3349 */ 3350 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3351 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3352 return 0; 3353 } 3354 3355 spin_lock_bh(&mvmsta->lock); 3356 3357 txq_id = tid_data->txq_id; 3358 3359 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3360 mvmsta->deflink.sta_id, tid, txq_id, 3361 tid_data->state); 3362 3363 mvmsta->agg_tids &= ~BIT(tid); 3364 3365 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3366 3367 switch (tid_data->state) { 3368 case IWL_AGG_ON: 3369 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3370 3371 IWL_DEBUG_TX_QUEUES(mvm, 3372 "ssn = %d, next_recl = %d\n", 3373 tid_data->ssn, tid_data->next_reclaimed); 3374 3375 tid_data->ssn = 0xffff; 3376 tid_data->state = IWL_AGG_OFF; 3377 spin_unlock_bh(&mvmsta->lock); 3378 3379 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3380 3381 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3382 return 0; 3383 case IWL_AGG_STARTING: 3384 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3385 /* 3386 * The agg session has been stopped before it was set up. This 3387 * can happen when the AddBA timer times out for example. 3388 */ 3389 3390 /* No barriers since we are under mutex */ 3391 lockdep_assert_held(&mvm->mutex); 3392 3393 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3394 tid_data->state = IWL_AGG_OFF; 3395 err = 0; 3396 break; 3397 default: 3398 IWL_ERR(mvm, 3399 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3400 mvmsta->deflink.sta_id, tid, tid_data->state); 3401 IWL_ERR(mvm, 3402 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3403 err = -EINVAL; 3404 } 3405 3406 spin_unlock_bh(&mvmsta->lock); 3407 3408 return err; 3409 } 3410 3411 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3412 struct ieee80211_sta *sta, u16 tid) 3413 { 3414 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3415 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3416 u16 txq_id; 3417 enum iwl_mvm_agg_state old_state; 3418 3419 /* 3420 * First set the agg state to OFF to avoid calling 3421 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3422 */ 3423 spin_lock_bh(&mvmsta->lock); 3424 txq_id = tid_data->txq_id; 3425 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3426 mvmsta->deflink.sta_id, tid, txq_id, 3427 tid_data->state); 3428 old_state = tid_data->state; 3429 tid_data->state = IWL_AGG_OFF; 3430 mvmsta->agg_tids &= ~BIT(tid); 3431 spin_unlock_bh(&mvmsta->lock); 3432 3433 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3434 3435 if (old_state >= IWL_AGG_ON) { 3436 iwl_mvm_drain_sta(mvm, mvmsta, true); 3437 3438 if (iwl_mvm_has_new_tx_api(mvm)) { 3439 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3440 BIT(tid))) 3441 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3442 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3443 } else { 3444 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3445 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3446 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3447 } 3448 3449 iwl_mvm_drain_sta(mvm, mvmsta, false); 3450 3451 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3452 } 3453 3454 return 0; 3455 } 3456 3457 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3458 { 3459 int i, max = -1, max_offs = -1; 3460 3461 lockdep_assert_held(&mvm->mutex); 3462 3463 /* Pick the unused key offset with the highest 'deleted' 3464 * counter. Every time a key is deleted, all the counters 3465 * are incremented and the one that was just deleted is 3466 * reset to zero. Thus, the highest counter is the one 3467 * that was deleted longest ago. Pick that one. 3468 */ 3469 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3470 if (test_bit(i, mvm->fw_key_table)) 3471 continue; 3472 if (mvm->fw_key_deleted[i] > max) { 3473 max = mvm->fw_key_deleted[i]; 3474 max_offs = i; 3475 } 3476 } 3477 3478 if (max_offs < 0) 3479 return STA_KEY_IDX_INVALID; 3480 3481 return max_offs; 3482 } 3483 3484 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3485 struct ieee80211_vif *vif, 3486 struct ieee80211_sta *sta) 3487 { 3488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3489 3490 if (sta) 3491 return iwl_mvm_sta_from_mac80211(sta); 3492 3493 /* 3494 * The device expects GTKs for station interfaces to be 3495 * installed as GTKs for the AP station. If we have no 3496 * station ID, then use AP's station ID. 3497 */ 3498 if (vif->type == NL80211_IFTYPE_STATION && 3499 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3500 u8 sta_id = mvmvif->deflink.ap_sta_id; 3501 3502 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3503 lockdep_is_held(&mvm->mutex)); 3504 3505 /* 3506 * It is possible that the 'sta' parameter is NULL, 3507 * for example when a GTK is removed - the sta_id will then 3508 * be the AP ID, and no station was passed by mac80211. 3509 */ 3510 if (IS_ERR_OR_NULL(sta)) 3511 return NULL; 3512 3513 return iwl_mvm_sta_from_mac80211(sta); 3514 } 3515 3516 return NULL; 3517 } 3518 3519 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3520 { 3521 int i; 3522 3523 for (i = len - 1; i >= 0; i--) { 3524 if (pn1[i] > pn2[i]) 3525 return 1; 3526 if (pn1[i] < pn2[i]) 3527 return -1; 3528 } 3529 3530 return 0; 3531 } 3532 3533 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3534 u32 sta_id, 3535 struct ieee80211_key_conf *key, bool mcast, 3536 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3537 u8 key_offset, bool mfp) 3538 { 3539 union { 3540 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3541 struct iwl_mvm_add_sta_key_cmd cmd; 3542 } u = {}; 3543 __le16 key_flags; 3544 int ret; 3545 u32 status; 3546 u16 keyidx; 3547 u64 pn = 0; 3548 int i, size; 3549 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3550 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3551 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3552 new_api ? 2 : 1); 3553 3554 if (sta_id == IWL_MVM_INVALID_STA) 3555 return -EINVAL; 3556 3557 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3558 STA_KEY_FLG_KEYID_MSK; 3559 key_flags = cpu_to_le16(keyidx); 3560 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3561 3562 switch (key->cipher) { 3563 case WLAN_CIPHER_SUITE_TKIP: 3564 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3565 if (api_ver >= 2) { 3566 memcpy((void *)&u.cmd.tx_mic_key, 3567 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3568 IWL_MIC_KEY_SIZE); 3569 3570 memcpy((void *)&u.cmd.rx_mic_key, 3571 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3572 IWL_MIC_KEY_SIZE); 3573 pn = atomic64_read(&key->tx_pn); 3574 3575 } else { 3576 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3577 for (i = 0; i < 5; i++) 3578 u.cmd_v1.tkip_rx_ttak[i] = 3579 cpu_to_le16(tkip_p1k[i]); 3580 } 3581 memcpy(u.cmd.common.key, key->key, key->keylen); 3582 break; 3583 case WLAN_CIPHER_SUITE_CCMP: 3584 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3585 memcpy(u.cmd.common.key, key->key, key->keylen); 3586 if (api_ver >= 2) 3587 pn = atomic64_read(&key->tx_pn); 3588 break; 3589 case WLAN_CIPHER_SUITE_WEP104: 3590 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3591 fallthrough; 3592 case WLAN_CIPHER_SUITE_WEP40: 3593 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3594 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3595 break; 3596 case WLAN_CIPHER_SUITE_GCMP_256: 3597 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3598 fallthrough; 3599 case WLAN_CIPHER_SUITE_GCMP: 3600 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3601 memcpy(u.cmd.common.key, key->key, key->keylen); 3602 if (api_ver >= 2) 3603 pn = atomic64_read(&key->tx_pn); 3604 break; 3605 default: 3606 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3607 memcpy(u.cmd.common.key, key->key, key->keylen); 3608 } 3609 3610 if (mcast) 3611 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3612 if (mfp) 3613 key_flags |= cpu_to_le16(STA_KEY_MFP); 3614 3615 u.cmd.common.key_offset = key_offset; 3616 u.cmd.common.key_flags = key_flags; 3617 u.cmd.common.sta_id = sta_id; 3618 3619 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3620 i = 0; 3621 else 3622 i = -1; 3623 3624 for (; i < IEEE80211_NUM_TIDS; i++) { 3625 struct ieee80211_key_seq seq = {}; 3626 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3627 int rx_pn_len = 8; 3628 /* there's a hole at 2/3 in FW format depending on version */ 3629 int hole = api_ver >= 3 ? 0 : 2; 3630 3631 ieee80211_get_key_rx_seq(key, i, &seq); 3632 3633 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3634 rx_pn[0] = seq.tkip.iv16; 3635 rx_pn[1] = seq.tkip.iv16 >> 8; 3636 rx_pn[2 + hole] = seq.tkip.iv32; 3637 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3638 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3639 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3640 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3641 rx_pn = seq.hw.seq; 3642 rx_pn_len = seq.hw.seq_len; 3643 } else { 3644 rx_pn[0] = seq.ccmp.pn[0]; 3645 rx_pn[1] = seq.ccmp.pn[1]; 3646 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3647 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3648 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3649 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3650 } 3651 3652 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3653 rx_pn_len) > 0) 3654 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3655 rx_pn_len); 3656 } 3657 3658 if (api_ver >= 2) { 3659 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3660 size = sizeof(u.cmd); 3661 } else { 3662 size = sizeof(u.cmd_v1); 3663 } 3664 3665 status = ADD_STA_SUCCESS; 3666 if (cmd_flags & CMD_ASYNC) 3667 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3668 &u.cmd); 3669 else 3670 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3671 &u.cmd, &status); 3672 3673 switch (status) { 3674 case ADD_STA_SUCCESS: 3675 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3676 break; 3677 default: 3678 ret = -EIO; 3679 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3680 break; 3681 } 3682 3683 return ret; 3684 } 3685 3686 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3687 struct ieee80211_key_conf *keyconf, 3688 u8 sta_id, bool remove_key) 3689 { 3690 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3691 3692 /* verify the key details match the required command's expectations */ 3693 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3694 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3695 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3696 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3697 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3698 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3699 return -EINVAL; 3700 3701 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3702 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3703 return -EINVAL; 3704 3705 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3706 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3707 3708 if (remove_key) { 3709 /* This is a valid situation for IGTK */ 3710 if (sta_id == IWL_MVM_INVALID_STA) 3711 return 0; 3712 3713 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3714 } else { 3715 struct ieee80211_key_seq seq; 3716 const u8 *pn; 3717 3718 switch (keyconf->cipher) { 3719 case WLAN_CIPHER_SUITE_AES_CMAC: 3720 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3721 break; 3722 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3723 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3724 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3725 break; 3726 default: 3727 return -EINVAL; 3728 } 3729 3730 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3731 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3732 igtk_cmd.ctrl_flags |= 3733 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3734 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3735 pn = seq.aes_cmac.pn; 3736 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3737 ((u64) pn[4] << 8) | 3738 ((u64) pn[3] << 16) | 3739 ((u64) pn[2] << 24) | 3740 ((u64) pn[1] << 32) | 3741 ((u64) pn[0] << 40)); 3742 } 3743 3744 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3745 remove_key ? "removing" : "installing", 3746 keyconf->keyidx >= 6 ? "B" : "", 3747 keyconf->keyidx, igtk_cmd.sta_id); 3748 3749 if (!iwl_mvm_has_new_rx_api(mvm)) { 3750 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3751 .ctrl_flags = igtk_cmd.ctrl_flags, 3752 .key_id = igtk_cmd.key_id, 3753 .sta_id = igtk_cmd.sta_id, 3754 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3755 }; 3756 3757 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3758 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3759 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3760 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3761 } 3762 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3763 sizeof(igtk_cmd), &igtk_cmd); 3764 } 3765 3766 3767 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3768 struct ieee80211_vif *vif, 3769 struct ieee80211_sta *sta) 3770 { 3771 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3772 3773 if (sta) 3774 return sta->addr; 3775 3776 if (vif->type == NL80211_IFTYPE_STATION && 3777 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3778 u8 sta_id = mvmvif->deflink.ap_sta_id; 3779 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3780 lockdep_is_held(&mvm->mutex)); 3781 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3782 return NULL; 3783 3784 return sta->addr; 3785 } 3786 3787 3788 return NULL; 3789 } 3790 3791 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3792 struct ieee80211_vif *vif, 3793 struct ieee80211_sta *sta, 3794 struct ieee80211_key_conf *keyconf, 3795 u8 key_offset, 3796 bool mcast) 3797 { 3798 const u8 *addr; 3799 struct ieee80211_key_seq seq; 3800 u16 p1k[5]; 3801 u32 sta_id; 3802 bool mfp = false; 3803 3804 if (sta) { 3805 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3806 3807 sta_id = mvm_sta->deflink.sta_id; 3808 mfp = sta->mfp; 3809 } else if (vif->type == NL80211_IFTYPE_AP && 3810 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3811 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3812 3813 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3814 } else { 3815 IWL_ERR(mvm, "Failed to find station id\n"); 3816 return -EINVAL; 3817 } 3818 3819 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3820 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3821 if (!addr) { 3822 IWL_ERR(mvm, "Failed to find mac address\n"); 3823 return -EINVAL; 3824 } 3825 3826 /* get phase 1 key from mac80211 */ 3827 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3828 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3829 3830 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3831 seq.tkip.iv32, p1k, 0, key_offset, 3832 mfp); 3833 } 3834 3835 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3836 0, NULL, 0, key_offset, mfp); 3837 } 3838 3839 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3840 struct ieee80211_vif *vif, 3841 struct ieee80211_sta *sta, 3842 struct ieee80211_key_conf *keyconf, 3843 u8 key_offset) 3844 { 3845 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3846 struct iwl_mvm_sta *mvm_sta; 3847 u8 sta_id = IWL_MVM_INVALID_STA; 3848 int ret; 3849 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3850 3851 lockdep_assert_held(&mvm->mutex); 3852 3853 if (vif->type != NL80211_IFTYPE_AP || 3854 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3855 /* Get the station id from the mvm local station table */ 3856 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3857 if (!mvm_sta) { 3858 IWL_ERR(mvm, "Failed to find station\n"); 3859 return -EINVAL; 3860 } 3861 sta_id = mvm_sta->deflink.sta_id; 3862 3863 /* 3864 * It is possible that the 'sta' parameter is NULL, and thus 3865 * there is a need to retrieve the sta from the local station 3866 * table. 3867 */ 3868 if (!sta) { 3869 sta = rcu_dereference_protected( 3870 mvm->fw_id_to_mac_id[sta_id], 3871 lockdep_is_held(&mvm->mutex)); 3872 if (IS_ERR_OR_NULL(sta)) { 3873 IWL_ERR(mvm, "Invalid station id\n"); 3874 return -EINVAL; 3875 } 3876 } 3877 3878 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3879 return -EINVAL; 3880 } else { 3881 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3882 3883 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3884 } 3885 3886 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3887 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3888 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3889 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3890 goto end; 3891 } 3892 3893 /* If the key_offset is not pre-assigned, we need to find a 3894 * new offset to use. In normal cases, the offset is not 3895 * pre-assigned, but during HW_RESTART we want to reuse the 3896 * same indices, so we pass them when this function is called. 3897 * 3898 * In D3 entry, we need to hardcoded the indices (because the 3899 * firmware hardcodes the PTK offset to 0). In this case, we 3900 * need to make sure we don't overwrite the hw_key_idx in the 3901 * keyconf structure, because otherwise we cannot configure 3902 * the original ones back when resuming. 3903 */ 3904 if (key_offset == STA_KEY_IDX_INVALID) { 3905 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3906 if (key_offset == STA_KEY_IDX_INVALID) 3907 return -ENOSPC; 3908 keyconf->hw_key_idx = key_offset; 3909 } 3910 3911 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3912 if (ret) 3913 goto end; 3914 3915 /* 3916 * For WEP, the same key is used for multicast and unicast. Upload it 3917 * again, using the same key offset, and now pointing the other one 3918 * to the same key slot (offset). 3919 * If this fails, remove the original as well. 3920 */ 3921 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3922 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3923 sta) { 3924 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3925 key_offset, !mcast); 3926 if (ret) { 3927 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3928 goto end; 3929 } 3930 } 3931 3932 __set_bit(key_offset, mvm->fw_key_table); 3933 3934 end: 3935 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3936 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3937 sta ? sta->addr : zero_addr, ret); 3938 return ret; 3939 } 3940 3941 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3942 struct ieee80211_vif *vif, 3943 struct ieee80211_sta *sta, 3944 struct ieee80211_key_conf *keyconf) 3945 { 3946 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3947 struct iwl_mvm_sta *mvm_sta; 3948 u8 sta_id = IWL_MVM_INVALID_STA; 3949 int ret, i; 3950 3951 lockdep_assert_held(&mvm->mutex); 3952 3953 /* Get the station from the mvm local station table */ 3954 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3955 if (mvm_sta) 3956 sta_id = mvm_sta->deflink.sta_id; 3957 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3958 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3959 3960 3961 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3962 keyconf->keyidx, sta_id); 3963 3964 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3965 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3966 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3967 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3968 3969 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3970 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3971 keyconf->hw_key_idx); 3972 return -ENOENT; 3973 } 3974 3975 /* track which key was deleted last */ 3976 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3977 if (mvm->fw_key_deleted[i] < U8_MAX) 3978 mvm->fw_key_deleted[i]++; 3979 } 3980 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3981 3982 if (sta && !mvm_sta) { 3983 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3984 return 0; 3985 } 3986 3987 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3988 if (ret) 3989 return ret; 3990 3991 /* delete WEP key twice to get rid of (now useless) offset */ 3992 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3993 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3994 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3995 3996 return ret; 3997 } 3998 3999 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 4000 struct ieee80211_vif *vif, 4001 struct ieee80211_key_conf *keyconf, 4002 struct ieee80211_sta *sta, u32 iv32, 4003 u16 *phase1key) 4004 { 4005 struct iwl_mvm_sta *mvm_sta; 4006 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4007 bool mfp = sta ? sta->mfp : false; 4008 4009 rcu_read_lock(); 4010 4011 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4012 if (WARN_ON_ONCE(!mvm_sta)) 4013 goto unlock; 4014 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4015 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4016 mfp); 4017 4018 unlock: 4019 rcu_read_unlock(); 4020 } 4021 4022 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4023 struct ieee80211_sta *sta) 4024 { 4025 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4026 struct iwl_mvm_add_sta_cmd cmd = { 4027 .add_modify = STA_MODE_MODIFY, 4028 .sta_id = mvmsta->deflink.sta_id, 4029 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4030 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4031 }; 4032 int ret; 4033 4034 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4035 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4036 if (ret) 4037 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4038 } 4039 4040 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4041 struct ieee80211_sta *sta, 4042 enum ieee80211_frame_release_type reason, 4043 u16 cnt, u16 tids, bool more_data, 4044 bool single_sta_queue) 4045 { 4046 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4047 struct iwl_mvm_add_sta_cmd cmd = { 4048 .add_modify = STA_MODE_MODIFY, 4049 .sta_id = mvmsta->deflink.sta_id, 4050 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4051 .sleep_tx_count = cpu_to_le16(cnt), 4052 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4053 }; 4054 int tid, ret; 4055 unsigned long _tids = tids; 4056 4057 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4058 * Note that this field is reserved and unused by firmware not 4059 * supporting GO uAPSD, so it's safe to always do this. 4060 */ 4061 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4062 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4063 4064 /* If we're releasing frames from aggregation or dqa queues then check 4065 * if all the queues that we're releasing frames from, combined, have: 4066 * - more frames than the service period, in which case more_data 4067 * needs to be set 4068 * - fewer than 'cnt' frames, in which case we need to adjust the 4069 * firmware command (but do that unconditionally) 4070 */ 4071 if (single_sta_queue) { 4072 int remaining = cnt; 4073 int sleep_tx_count; 4074 4075 spin_lock_bh(&mvmsta->lock); 4076 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4077 struct iwl_mvm_tid_data *tid_data; 4078 u16 n_queued; 4079 4080 tid_data = &mvmsta->tid_data[tid]; 4081 4082 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4083 if (n_queued > remaining) { 4084 more_data = true; 4085 remaining = 0; 4086 break; 4087 } 4088 remaining -= n_queued; 4089 } 4090 sleep_tx_count = cnt - remaining; 4091 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4092 mvmsta->sleep_tx_count = sleep_tx_count; 4093 spin_unlock_bh(&mvmsta->lock); 4094 4095 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4096 if (WARN_ON(cnt - remaining == 0)) { 4097 ieee80211_sta_eosp(sta); 4098 return; 4099 } 4100 } 4101 4102 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4103 if (more_data) 4104 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4105 4106 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4107 mvmsta->next_status_eosp = true; 4108 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4109 } else { 4110 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4111 } 4112 4113 /* block the Tx queues until the FW updated the sleep Tx count */ 4114 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4115 CMD_ASYNC | CMD_BLOCK_TXQS, 4116 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4117 if (ret) 4118 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4119 } 4120 4121 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4122 struct iwl_rx_cmd_buffer *rxb) 4123 { 4124 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4125 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4126 struct ieee80211_sta *sta; 4127 u32 sta_id = le32_to_cpu(notif->sta_id); 4128 4129 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4130 return; 4131 4132 rcu_read_lock(); 4133 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4134 if (!IS_ERR_OR_NULL(sta)) 4135 ieee80211_sta_eosp(sta); 4136 rcu_read_unlock(); 4137 } 4138 4139 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4140 struct iwl_mvm_sta *mvmsta, 4141 bool disable) 4142 { 4143 struct iwl_mvm_add_sta_cmd cmd = { 4144 .add_modify = STA_MODE_MODIFY, 4145 .sta_id = mvmsta->deflink.sta_id, 4146 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4147 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4148 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4149 }; 4150 int ret; 4151 4152 if (mvm->mld_api_is_used) { 4153 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4154 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4155 return; 4156 } 4157 4158 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4159 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4160 if (ret) 4161 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4162 } 4163 4164 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4165 struct ieee80211_sta *sta, 4166 bool disable) 4167 { 4168 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4169 4170 if (mvm->mld_api_is_used) { 4171 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4172 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4173 return; 4174 } 4175 4176 spin_lock_bh(&mvm_sta->lock); 4177 4178 if (mvm_sta->disable_tx == disable) { 4179 spin_unlock_bh(&mvm_sta->lock); 4180 return; 4181 } 4182 4183 mvm_sta->disable_tx = disable; 4184 4185 /* 4186 * If sta PS state is handled by mac80211, tell it to start/stop 4187 * queuing tx for this station. 4188 */ 4189 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4190 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4191 4192 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4193 4194 spin_unlock_bh(&mvm_sta->lock); 4195 } 4196 4197 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4198 struct iwl_mvm_vif *mvmvif, 4199 struct iwl_mvm_int_sta *sta, 4200 bool disable) 4201 { 4202 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4203 struct iwl_mvm_add_sta_cmd cmd = { 4204 .add_modify = STA_MODE_MODIFY, 4205 .sta_id = sta->sta_id, 4206 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4207 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4208 .mac_id_n_color = cpu_to_le32(id), 4209 }; 4210 int ret; 4211 4212 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4213 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4214 if (ret) 4215 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4216 } 4217 4218 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4219 struct iwl_mvm_vif *mvmvif, 4220 bool disable) 4221 { 4222 struct ieee80211_sta *sta; 4223 struct iwl_mvm_sta *mvm_sta; 4224 int i; 4225 4226 if (mvm->mld_api_is_used) { 4227 if (!iwl_mvm_has_no_host_disable_tx(mvm)) 4228 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, 4229 disable); 4230 return; 4231 } 4232 4233 rcu_read_lock(); 4234 4235 /* Block/unblock all the stations of the given mvmvif */ 4236 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4237 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4238 if (IS_ERR_OR_NULL(sta)) 4239 continue; 4240 4241 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4242 if (mvm_sta->mac_id_n_color != 4243 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4244 continue; 4245 4246 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4247 } 4248 4249 rcu_read_unlock(); 4250 4251 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4252 return; 4253 4254 /* Need to block/unblock also multicast station */ 4255 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4256 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4257 &mvmvif->deflink.mcast_sta, 4258 disable); 4259 4260 /* 4261 * Only unblock the broadcast station (FW blocks it for immediate 4262 * quiet, not the driver) 4263 */ 4264 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4265 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4266 &mvmvif->deflink.bcast_sta, 4267 disable); 4268 } 4269 4270 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4271 { 4272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4273 struct iwl_mvm_sta *mvmsta; 4274 4275 rcu_read_lock(); 4276 4277 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4278 4279 if (mvmsta) 4280 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4281 4282 rcu_read_unlock(); 4283 } 4284 4285 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4286 { 4287 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4288 4289 /* 4290 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4291 * to align the wrap around of ssn so we compare relevant values. 4292 */ 4293 if (mvm->trans->trans_cfg->gen2) 4294 sn &= 0xff; 4295 4296 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4297 } 4298 4299 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4300 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4301 u8 *key, u32 key_len) 4302 { 4303 int ret; 4304 u16 queue; 4305 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4306 struct ieee80211_key_conf *keyconf; 4307 unsigned int wdg_timeout = 4308 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 4309 bool mld = iwl_mvm_has_mld_api(mvm->fw); 4310 u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK; 4311 4312 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4313 NL80211_IFTYPE_UNSPECIFIED, type); 4314 if (ret) 4315 return ret; 4316 4317 if (mld) 4318 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr, 4319 mvmvif->deflink.fw_link_id, 4320 &queue, 4321 IWL_MAX_TID_COUNT, 4322 &wdg_timeout); 4323 else 4324 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, 4325 mvmvif->color, addr, sta, 4326 &queue, 4327 IWL_MVM_TX_FIFO_BE); 4328 if (ret) 4329 goto out; 4330 4331 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4332 if (!keyconf) { 4333 ret = -ENOBUFS; 4334 goto out; 4335 } 4336 4337 keyconf->cipher = cipher; 4338 memcpy(keyconf->key, key, key_len); 4339 keyconf->keylen = key_len; 4340 keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE; 4341 4342 if (mld) { 4343 /* The MFP flag is set according to the station mfp field. Since 4344 * we don't have a station, set it manually. 4345 */ 4346 u32 key_flags = 4347 iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) | 4348 IWL_SEC_KEY_FLAG_MFP; 4349 u32 sta_mask = BIT(sta->sta_id); 4350 4351 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf); 4352 } else { 4353 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4354 0, NULL, 0, 0, true); 4355 } 4356 4357 kfree(keyconf); 4358 return 0; 4359 out: 4360 iwl_mvm_dealloc_int_sta(mvm, sta); 4361 return ret; 4362 } 4363 4364 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4365 struct ieee80211_vif *vif, 4366 u32 id) 4367 { 4368 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4369 .id = cpu_to_le32(id), 4370 }; 4371 int ret; 4372 4373 ret = iwl_mvm_send_cmd_pdu(mvm, 4374 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4375 CMD_ASYNC, 4376 sizeof(cancel_channel_switch_cmd), 4377 &cancel_channel_switch_cmd); 4378 if (ret) 4379 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4380 } 4381