1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 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 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 28 enum nl80211_iftype iftype) 29 { 30 int sta_id; 31 u32 reserved_ids = 0; 32 33 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 34 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 35 36 lockdep_assert_held(&mvm->mutex); 37 38 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 39 if (iftype != NL80211_IFTYPE_STATION) 40 reserved_ids = BIT(0); 41 42 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 43 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 44 if (BIT(sta_id) & reserved_ids) 45 continue; 46 47 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 48 lockdep_is_held(&mvm->mutex))) 49 return sta_id; 50 } 51 return IWL_MVM_INVALID_STA; 52 } 53 54 /* send station add/update command to firmware */ 55 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 56 bool update, unsigned int flags) 57 { 58 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 59 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 60 .sta_id = mvm_sta->sta_id, 61 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 62 .add_modify = update ? 1 : 0, 63 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 64 STA_FLG_MIMO_EN_MSK | 65 STA_FLG_RTS_MIMO_PROT), 66 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 67 }; 68 int ret; 69 u32 status; 70 u32 agg_size = 0, mpdu_dens = 0; 71 72 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 73 add_sta_cmd.station_type = mvm_sta->sta_type; 74 75 if (!update || (flags & STA_MODIFY_QUEUES)) { 76 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 77 78 if (!iwl_mvm_has_new_tx_api(mvm)) { 79 add_sta_cmd.tfd_queue_msk = 80 cpu_to_le32(mvm_sta->tfd_queue_msk); 81 82 if (flags & STA_MODIFY_QUEUES) 83 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 84 } else { 85 WARN_ON(flags & STA_MODIFY_QUEUES); 86 } 87 } 88 89 switch (sta->deflink.bandwidth) { 90 case IEEE80211_STA_RX_BW_320: 91 case IEEE80211_STA_RX_BW_160: 92 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 93 fallthrough; 94 case IEEE80211_STA_RX_BW_80: 95 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 96 fallthrough; 97 case IEEE80211_STA_RX_BW_40: 98 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 99 fallthrough; 100 case IEEE80211_STA_RX_BW_20: 101 if (sta->deflink.ht_cap.ht_supported) 102 add_sta_cmd.station_flags |= 103 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 104 break; 105 } 106 107 switch (sta->deflink.rx_nss) { 108 case 1: 109 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 110 break; 111 case 2: 112 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 113 break; 114 case 3 ... 8: 115 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 116 break; 117 } 118 119 switch (sta->deflink.smps_mode) { 120 case IEEE80211_SMPS_AUTOMATIC: 121 case IEEE80211_SMPS_NUM_MODES: 122 WARN_ON(1); 123 break; 124 case IEEE80211_SMPS_STATIC: 125 /* override NSS */ 126 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 127 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 128 break; 129 case IEEE80211_SMPS_DYNAMIC: 130 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 131 break; 132 case IEEE80211_SMPS_OFF: 133 /* nothing */ 134 break; 135 } 136 137 if (sta->deflink.ht_cap.ht_supported) { 138 add_sta_cmd.station_flags_msk |= 139 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 140 STA_FLG_AGG_MPDU_DENS_MSK); 141 142 mpdu_dens = sta->deflink.ht_cap.ampdu_density; 143 } 144 145 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 146 add_sta_cmd.station_flags_msk |= 147 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 148 STA_FLG_AGG_MPDU_DENS_MSK); 149 150 mpdu_dens = le16_get_bits(sta->deflink.he_6ghz_capa.capa, 151 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 152 agg_size = le16_get_bits(sta->deflink.he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 154 } else if (sta->deflink.vht_cap.vht_supported) { 155 agg_size = sta->deflink.vht_cap.cap & 156 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 157 agg_size >>= 158 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 159 } else if (sta->deflink.ht_cap.ht_supported) { 160 agg_size = sta->deflink.ht_cap.ampdu_factor; 161 } 162 163 /* D6.0 10.12.2 A-MPDU length limit rules 164 * A STA indicates the maximum length of the A-MPDU preEOF padding 165 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 166 * Exponent field in its HT Capabilities, VHT Capabilities, 167 * and HE 6 GHz Band Capabilities elements (if present) and the 168 * Maximum AMPDU Length Exponent Extension field in its HE 169 * Capabilities element 170 */ 171 if (sta->deflink.he_cap.has_he) 172 agg_size += u8_get_bits(sta->deflink.he_cap.he_cap_elem.mac_cap_info[3], 173 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 174 175 /* Limit to max A-MPDU supported by FW */ 176 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 177 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 178 STA_FLG_MAX_AGG_SIZE_SHIFT); 179 180 add_sta_cmd.station_flags |= 181 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 182 add_sta_cmd.station_flags |= 183 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 184 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 185 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 186 187 if (sta->wme) { 188 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 189 190 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 191 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 192 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 193 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 194 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 195 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 196 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 197 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 198 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 199 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 200 } 201 202 status = ADD_STA_SUCCESS; 203 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 204 iwl_mvm_add_sta_cmd_size(mvm), 205 &add_sta_cmd, &status); 206 if (ret) 207 return ret; 208 209 switch (status & IWL_ADD_STA_STATUS_MASK) { 210 case ADD_STA_SUCCESS: 211 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 212 break; 213 default: 214 ret = -EIO; 215 IWL_ERR(mvm, "ADD_STA failed\n"); 216 break; 217 } 218 219 return ret; 220 } 221 222 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 223 { 224 struct iwl_mvm_baid_data *data = 225 from_timer(data, t, session_timer); 226 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 227 struct iwl_mvm_baid_data *ba_data; 228 struct ieee80211_sta *sta; 229 struct iwl_mvm_sta *mvm_sta; 230 unsigned long timeout; 231 232 rcu_read_lock(); 233 234 ba_data = rcu_dereference(*rcu_ptr); 235 236 if (WARN_ON(!ba_data)) 237 goto unlock; 238 239 if (!ba_data->timeout) 240 goto unlock; 241 242 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 243 if (time_is_after_jiffies(timeout)) { 244 mod_timer(&ba_data->session_timer, timeout); 245 goto unlock; 246 } 247 248 /* Timer expired */ 249 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 250 251 /* 252 * sta should be valid unless the following happens: 253 * The firmware asserts which triggers a reconfig flow, but 254 * the reconfig fails before we set the pointer to sta into 255 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 256 * A-MDPU and hence the timer continues to run. Then, the 257 * timer expires and sta is NULL. 258 */ 259 if (!sta) 260 goto unlock; 261 262 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 263 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 264 sta->addr, ba_data->tid); 265 unlock: 266 rcu_read_unlock(); 267 } 268 269 /* Disable aggregations for a bitmap of TIDs for a given station */ 270 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 271 unsigned long disable_agg_tids, 272 bool remove_queue) 273 { 274 struct iwl_mvm_add_sta_cmd cmd = {}; 275 struct ieee80211_sta *sta; 276 struct iwl_mvm_sta *mvmsta; 277 u32 status; 278 u8 sta_id; 279 280 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 281 return -EINVAL; 282 283 sta_id = mvm->queue_info[queue].ra_sta_id; 284 285 rcu_read_lock(); 286 287 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 288 289 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 290 rcu_read_unlock(); 291 return -EINVAL; 292 } 293 294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 295 296 mvmsta->tid_disable_agg |= disable_agg_tids; 297 298 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 299 cmd.sta_id = mvmsta->sta_id; 300 cmd.add_modify = STA_MODE_MODIFY; 301 cmd.modify_mask = STA_MODIFY_QUEUES; 302 if (disable_agg_tids) 303 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 304 if (remove_queue) 305 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 306 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 307 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 308 309 rcu_read_unlock(); 310 311 /* Notify FW of queue removal from the STA queues */ 312 status = ADD_STA_SUCCESS; 313 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 314 iwl_mvm_add_sta_cmd_size(mvm), 315 &cmd, &status); 316 } 317 318 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 319 u16 *queueptr, u8 tid) 320 { 321 int queue = *queueptr; 322 struct iwl_scd_txq_cfg_cmd cmd = { 323 .scd_queue = queue, 324 .action = SCD_CFG_DISABLE_QUEUE, 325 }; 326 int ret; 327 328 lockdep_assert_held(&mvm->mutex); 329 330 if (iwl_mvm_has_new_tx_api(mvm)) { 331 if (mvm->sta_remove_requires_queue_remove) { 332 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 333 SCD_QUEUE_CONFIG_CMD); 334 struct iwl_scd_queue_cfg_cmd remove_cmd = { 335 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 336 .u.remove.queue = cpu_to_le32(queue), 337 }; 338 339 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 340 sizeof(remove_cmd), 341 &remove_cmd); 342 } else { 343 ret = 0; 344 } 345 346 iwl_trans_txq_free(mvm->trans, queue); 347 *queueptr = IWL_MVM_INVALID_QUEUE; 348 349 return ret; 350 } 351 352 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 353 return 0; 354 355 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 356 357 cmd.action = mvm->queue_info[queue].tid_bitmap ? 358 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 359 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 360 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 361 362 IWL_DEBUG_TX_QUEUES(mvm, 363 "Disabling TXQ #%d tids=0x%x\n", 364 queue, 365 mvm->queue_info[queue].tid_bitmap); 366 367 /* If the queue is still enabled - nothing left to do in this func */ 368 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 369 return 0; 370 371 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 372 cmd.tid = mvm->queue_info[queue].txq_tid; 373 374 /* Make sure queue info is correct even though we overwrite it */ 375 WARN(mvm->queue_info[queue].tid_bitmap, 376 "TXQ #%d info out-of-sync - tids=0x%x\n", 377 queue, mvm->queue_info[queue].tid_bitmap); 378 379 /* If we are here - the queue is freed and we can zero out these vals */ 380 mvm->queue_info[queue].tid_bitmap = 0; 381 382 if (sta) { 383 struct iwl_mvm_txq *mvmtxq = 384 iwl_mvm_txq_from_tid(sta, tid); 385 386 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 387 list_del_init(&mvmtxq->list); 388 } 389 390 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 391 mvm->queue_info[queue].reserved = false; 392 393 iwl_trans_txq_disable(mvm->trans, queue, false); 394 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 395 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 396 397 if (ret) 398 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 399 queue, ret); 400 return ret; 401 } 402 403 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 404 { 405 struct ieee80211_sta *sta; 406 struct iwl_mvm_sta *mvmsta; 407 unsigned long tid_bitmap; 408 unsigned long agg_tids = 0; 409 u8 sta_id; 410 int tid; 411 412 lockdep_assert_held(&mvm->mutex); 413 414 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 415 return -EINVAL; 416 417 sta_id = mvm->queue_info[queue].ra_sta_id; 418 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 419 420 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 421 lockdep_is_held(&mvm->mutex)); 422 423 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 424 return -EINVAL; 425 426 mvmsta = iwl_mvm_sta_from_mac80211(sta); 427 428 spin_lock_bh(&mvmsta->lock); 429 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 430 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 431 agg_tids |= BIT(tid); 432 } 433 spin_unlock_bh(&mvmsta->lock); 434 435 return agg_tids; 436 } 437 438 /* 439 * Remove a queue from a station's resources. 440 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 441 * doesn't disable the queue 442 */ 443 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 444 { 445 struct ieee80211_sta *sta; 446 struct iwl_mvm_sta *mvmsta; 447 unsigned long tid_bitmap; 448 unsigned long disable_agg_tids = 0; 449 u8 sta_id; 450 int tid; 451 452 lockdep_assert_held(&mvm->mutex); 453 454 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 455 return -EINVAL; 456 457 sta_id = mvm->queue_info[queue].ra_sta_id; 458 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 459 460 rcu_read_lock(); 461 462 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 463 464 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 465 rcu_read_unlock(); 466 return 0; 467 } 468 469 mvmsta = iwl_mvm_sta_from_mac80211(sta); 470 471 spin_lock_bh(&mvmsta->lock); 472 /* Unmap MAC queues and TIDs from this queue */ 473 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 474 struct iwl_mvm_txq *mvmtxq = 475 iwl_mvm_txq_from_tid(sta, tid); 476 477 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 478 disable_agg_tids |= BIT(tid); 479 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 480 481 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 482 list_del_init(&mvmtxq->list); 483 } 484 485 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 486 spin_unlock_bh(&mvmsta->lock); 487 488 rcu_read_unlock(); 489 490 /* 491 * The TX path may have been using this TXQ_ID from the tid_data, 492 * so make sure it's no longer running so that we can safely reuse 493 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 494 * above, but nothing guarantees we've stopped using them. Thus, 495 * without this, we could get to iwl_mvm_disable_txq() and remove 496 * the queue while still sending frames to it. 497 */ 498 synchronize_net(); 499 500 return disable_agg_tids; 501 } 502 503 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 504 struct ieee80211_sta *old_sta, 505 u8 new_sta_id) 506 { 507 struct iwl_mvm_sta *mvmsta; 508 u8 sta_id, tid; 509 unsigned long disable_agg_tids = 0; 510 bool same_sta; 511 u16 queue_tmp = queue; 512 int ret; 513 514 lockdep_assert_held(&mvm->mutex); 515 516 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 517 return -EINVAL; 518 519 sta_id = mvm->queue_info[queue].ra_sta_id; 520 tid = mvm->queue_info[queue].txq_tid; 521 522 same_sta = sta_id == new_sta_id; 523 524 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 525 if (WARN_ON(!mvmsta)) 526 return -EINVAL; 527 528 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 529 /* Disable the queue */ 530 if (disable_agg_tids) 531 iwl_mvm_invalidate_sta_queue(mvm, queue, 532 disable_agg_tids, false); 533 534 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid); 535 if (ret) { 536 IWL_ERR(mvm, 537 "Failed to free inactive queue %d (ret=%d)\n", 538 queue, ret); 539 540 return ret; 541 } 542 543 /* If TXQ is allocated to another STA, update removal in FW */ 544 if (!same_sta) 545 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 546 547 return 0; 548 } 549 550 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 551 unsigned long tfd_queue_mask, u8 ac) 552 { 553 int queue = 0; 554 u8 ac_to_queue[IEEE80211_NUM_ACS]; 555 int i; 556 557 /* 558 * This protects us against grabbing a queue that's being reconfigured 559 * by the inactivity checker. 560 */ 561 lockdep_assert_held(&mvm->mutex); 562 563 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 564 return -EINVAL; 565 566 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 567 568 /* See what ACs the existing queues for this STA have */ 569 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 570 /* Only DATA queues can be shared */ 571 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 572 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 573 continue; 574 575 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 576 } 577 578 /* 579 * The queue to share is chosen only from DATA queues as follows (in 580 * descending priority): 581 * 1. An AC_BE queue 582 * 2. Same AC queue 583 * 3. Highest AC queue that is lower than new AC 584 * 4. Any existing AC (there always is at least 1 DATA queue) 585 */ 586 587 /* Priority 1: An AC_BE queue */ 588 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 589 queue = ac_to_queue[IEEE80211_AC_BE]; 590 /* Priority 2: Same AC queue */ 591 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 592 queue = ac_to_queue[ac]; 593 /* Priority 3a: If new AC is VO and VI exists - use VI */ 594 else if (ac == IEEE80211_AC_VO && 595 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 596 queue = ac_to_queue[IEEE80211_AC_VI]; 597 /* Priority 3b: No BE so only AC less than the new one is BK */ 598 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 599 queue = ac_to_queue[IEEE80211_AC_BK]; 600 /* Priority 4a: No BE nor BK - use VI if exists */ 601 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 602 queue = ac_to_queue[IEEE80211_AC_VI]; 603 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 604 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 605 queue = ac_to_queue[IEEE80211_AC_VO]; 606 607 /* Make sure queue found (or not) is legal */ 608 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 609 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 610 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 611 IWL_ERR(mvm, "No DATA queues available to share\n"); 612 return -ENOSPC; 613 } 614 615 return queue; 616 } 617 618 /* Re-configure the SCD for a queue that has already been configured */ 619 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 620 int sta_id, int tid, int frame_limit, u16 ssn) 621 { 622 struct iwl_scd_txq_cfg_cmd cmd = { 623 .scd_queue = queue, 624 .action = SCD_CFG_ENABLE_QUEUE, 625 .window = frame_limit, 626 .sta_id = sta_id, 627 .ssn = cpu_to_le16(ssn), 628 .tx_fifo = fifo, 629 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 630 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 631 .tid = tid, 632 }; 633 int ret; 634 635 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 636 return -EINVAL; 637 638 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 639 "Trying to reconfig unallocated queue %d\n", queue)) 640 return -ENXIO; 641 642 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 643 644 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 645 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 646 queue, fifo, ret); 647 648 return ret; 649 } 650 651 /* 652 * If a given queue has a higher AC than the TID stream that is being compared 653 * to, the queue needs to be redirected to the lower AC. This function does that 654 * in such a case, otherwise - if no redirection required - it does nothing, 655 * unless the %force param is true. 656 */ 657 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 658 int ac, int ssn, unsigned int wdg_timeout, 659 bool force, struct iwl_mvm_txq *txq) 660 { 661 struct iwl_scd_txq_cfg_cmd cmd = { 662 .scd_queue = queue, 663 .action = SCD_CFG_DISABLE_QUEUE, 664 }; 665 bool shared_queue; 666 int ret; 667 668 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 669 return -EINVAL; 670 671 /* 672 * If the AC is lower than current one - FIFO needs to be redirected to 673 * the lowest one of the streams in the queue. Check if this is needed 674 * here. 675 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 676 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 677 * we need to check if the numerical value of X is LARGER than of Y. 678 */ 679 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 680 IWL_DEBUG_TX_QUEUES(mvm, 681 "No redirection needed on TXQ #%d\n", 682 queue); 683 return 0; 684 } 685 686 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 687 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 688 cmd.tid = mvm->queue_info[queue].txq_tid; 689 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 690 691 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 692 queue, iwl_mvm_ac_to_tx_fifo[ac]); 693 694 /* Stop the queue and wait for it to empty */ 695 txq->stopped = true; 696 697 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 698 if (ret) { 699 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 700 queue); 701 ret = -EIO; 702 goto out; 703 } 704 705 /* Before redirecting the queue we need to de-activate it */ 706 iwl_trans_txq_disable(mvm->trans, queue, false); 707 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 708 if (ret) 709 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 710 ret); 711 712 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 713 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 714 715 /* Update the TID "owner" of the queue */ 716 mvm->queue_info[queue].txq_tid = tid; 717 718 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 719 720 /* Redirect to lower AC */ 721 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 722 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 723 724 /* Update AC marking of the queue */ 725 mvm->queue_info[queue].mac80211_ac = ac; 726 727 /* 728 * Mark queue as shared in transport if shared 729 * Note this has to be done after queue enablement because enablement 730 * can also set this value, and there is no indication there to shared 731 * queues 732 */ 733 if (shared_queue) 734 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 735 736 out: 737 /* Continue using the queue */ 738 txq->stopped = false; 739 740 return ret; 741 } 742 743 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 744 u8 minq, u8 maxq) 745 { 746 int i; 747 748 lockdep_assert_held(&mvm->mutex); 749 750 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 751 "max queue %d >= num_of_queues (%d)", maxq, 752 mvm->trans->trans_cfg->base_params->num_of_queues)) 753 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 754 755 /* This should not be hit with new TX path */ 756 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 757 return -ENOSPC; 758 759 /* Start by looking for a free queue */ 760 for (i = minq; i <= maxq; i++) 761 if (mvm->queue_info[i].tid_bitmap == 0 && 762 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 763 return i; 764 765 return -ENOSPC; 766 } 767 768 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 769 u8 sta_id, u8 tid, unsigned int timeout) 770 { 771 int queue, size; 772 773 if (tid == IWL_MAX_TID_COUNT) { 774 tid = IWL_MGMT_TID; 775 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 776 mvm->trans->cfg->min_txq_size); 777 } else { 778 struct ieee80211_sta *sta; 779 780 rcu_read_lock(); 781 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 782 783 /* this queue isn't used for traffic (cab_queue) */ 784 if (IS_ERR_OR_NULL(sta)) { 785 size = IWL_MGMT_QUEUE_SIZE; 786 } else if (sta->deflink.he_cap.has_he) { 787 /* support for 256 ba size */ 788 size = IWL_DEFAULT_QUEUE_SIZE_HE; 789 } else { 790 size = IWL_DEFAULT_QUEUE_SIZE; 791 } 792 793 rcu_read_unlock(); 794 } 795 796 /* take the min with bc tbl entries allowed */ 797 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 798 799 /* size needs to be power of 2 values for calculating read/write pointers */ 800 size = rounddown_pow_of_two(size); 801 802 do { 803 queue = iwl_trans_txq_alloc(mvm->trans, 0, BIT(sta_id), 804 tid, size, timeout); 805 806 if (queue < 0) 807 IWL_DEBUG_TX_QUEUES(mvm, 808 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 809 size, sta_id, tid, queue); 810 size /= 2; 811 } while (queue < 0 && size >= 16); 812 813 if (queue < 0) 814 return queue; 815 816 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 817 queue, sta_id, tid); 818 819 return queue; 820 } 821 822 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 823 struct ieee80211_sta *sta, u8 ac, 824 int tid) 825 { 826 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 827 struct iwl_mvm_txq *mvmtxq = 828 iwl_mvm_txq_from_tid(sta, tid); 829 unsigned int wdg_timeout = 830 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 831 int queue = -1; 832 833 lockdep_assert_held(&mvm->mutex); 834 835 IWL_DEBUG_TX_QUEUES(mvm, 836 "Allocating queue for sta %d on tid %d\n", 837 mvmsta->sta_id, tid); 838 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 839 if (queue < 0) 840 return queue; 841 842 mvmtxq->txq_id = queue; 843 mvm->tvqm_info[queue].txq_tid = tid; 844 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 845 846 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 847 848 spin_lock_bh(&mvmsta->lock); 849 mvmsta->tid_data[tid].txq_id = queue; 850 spin_unlock_bh(&mvmsta->lock); 851 852 return 0; 853 } 854 855 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 856 struct ieee80211_sta *sta, 857 int queue, u8 sta_id, u8 tid) 858 { 859 bool enable_queue = true; 860 861 /* Make sure this TID isn't already enabled */ 862 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 863 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 864 queue, tid); 865 return false; 866 } 867 868 /* Update mappings and refcounts */ 869 if (mvm->queue_info[queue].tid_bitmap) 870 enable_queue = false; 871 872 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 873 mvm->queue_info[queue].ra_sta_id = sta_id; 874 875 if (enable_queue) { 876 if (tid != IWL_MAX_TID_COUNT) 877 mvm->queue_info[queue].mac80211_ac = 878 tid_to_mac80211_ac[tid]; 879 else 880 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 881 882 mvm->queue_info[queue].txq_tid = tid; 883 } 884 885 if (sta) { 886 struct iwl_mvm_txq *mvmtxq = 887 iwl_mvm_txq_from_tid(sta, tid); 888 889 mvmtxq->txq_id = queue; 890 } 891 892 IWL_DEBUG_TX_QUEUES(mvm, 893 "Enabling TXQ #%d tids=0x%x\n", 894 queue, mvm->queue_info[queue].tid_bitmap); 895 896 return enable_queue; 897 } 898 899 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 900 int queue, u16 ssn, 901 const struct iwl_trans_txq_scd_cfg *cfg, 902 unsigned int wdg_timeout) 903 { 904 struct iwl_scd_txq_cfg_cmd cmd = { 905 .scd_queue = queue, 906 .action = SCD_CFG_ENABLE_QUEUE, 907 .window = cfg->frame_limit, 908 .sta_id = cfg->sta_id, 909 .ssn = cpu_to_le16(ssn), 910 .tx_fifo = cfg->fifo, 911 .aggregate = cfg->aggregate, 912 .tid = cfg->tid, 913 }; 914 bool inc_ssn; 915 916 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 917 return false; 918 919 /* Send the enabling command if we need to */ 920 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 921 return false; 922 923 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 924 NULL, wdg_timeout); 925 if (inc_ssn) 926 le16_add_cpu(&cmd.ssn, 1); 927 928 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 929 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 930 931 return inc_ssn; 932 } 933 934 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 935 { 936 struct iwl_scd_txq_cfg_cmd cmd = { 937 .scd_queue = queue, 938 .action = SCD_CFG_UPDATE_QUEUE_TID, 939 }; 940 int tid; 941 unsigned long tid_bitmap; 942 int ret; 943 944 lockdep_assert_held(&mvm->mutex); 945 946 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 947 return; 948 949 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 950 951 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 952 return; 953 954 /* Find any TID for queue */ 955 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 956 cmd.tid = tid; 957 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 958 959 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 960 if (ret) { 961 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 962 queue, ret); 963 return; 964 } 965 966 mvm->queue_info[queue].txq_tid = tid; 967 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 968 queue, tid); 969 } 970 971 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 972 { 973 struct ieee80211_sta *sta; 974 struct iwl_mvm_sta *mvmsta; 975 u8 sta_id; 976 int tid = -1; 977 unsigned long tid_bitmap; 978 unsigned int wdg_timeout; 979 int ssn; 980 int ret = true; 981 982 /* queue sharing is disabled on new TX path */ 983 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 984 return; 985 986 lockdep_assert_held(&mvm->mutex); 987 988 sta_id = mvm->queue_info[queue].ra_sta_id; 989 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 990 991 /* Find TID for queue, and make sure it is the only one on the queue */ 992 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 993 if (tid_bitmap != BIT(tid)) { 994 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 995 queue, tid_bitmap); 996 return; 997 } 998 999 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1000 tid); 1001 1002 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1003 lockdep_is_held(&mvm->mutex)); 1004 1005 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1006 return; 1007 1008 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1009 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1010 1011 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1012 1013 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1014 tid_to_mac80211_ac[tid], ssn, 1015 wdg_timeout, true, 1016 iwl_mvm_txq_from_tid(sta, tid)); 1017 if (ret) { 1018 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1019 return; 1020 } 1021 1022 /* If aggs should be turned back on - do it */ 1023 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1024 struct iwl_mvm_add_sta_cmd cmd = {0}; 1025 1026 mvmsta->tid_disable_agg &= ~BIT(tid); 1027 1028 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1029 cmd.sta_id = mvmsta->sta_id; 1030 cmd.add_modify = STA_MODE_MODIFY; 1031 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1032 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1033 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1034 1035 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1036 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1037 if (!ret) { 1038 IWL_DEBUG_TX_QUEUES(mvm, 1039 "TXQ #%d is now aggregated again\n", 1040 queue); 1041 1042 /* Mark queue intenally as aggregating again */ 1043 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1044 } 1045 } 1046 1047 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1048 } 1049 1050 /* 1051 * Remove inactive TIDs of a given queue. 1052 * If all queue TIDs are inactive - mark the queue as inactive 1053 * If only some the queue TIDs are inactive - unmap them from the queue 1054 * 1055 * Returns %true if all TIDs were removed and the queue could be reused. 1056 */ 1057 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1058 struct iwl_mvm_sta *mvmsta, int queue, 1059 unsigned long tid_bitmap, 1060 unsigned long *unshare_queues, 1061 unsigned long *changetid_queues) 1062 { 1063 unsigned int tid; 1064 1065 lockdep_assert_held(&mvmsta->lock); 1066 lockdep_assert_held(&mvm->mutex); 1067 1068 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1069 return false; 1070 1071 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1072 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1073 /* If some TFDs are still queued - don't mark TID as inactive */ 1074 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1075 tid_bitmap &= ~BIT(tid); 1076 1077 /* Don't mark as inactive any TID that has an active BA */ 1078 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1079 tid_bitmap &= ~BIT(tid); 1080 } 1081 1082 /* If all TIDs in the queue are inactive - return it can be reused */ 1083 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1084 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1085 return true; 1086 } 1087 1088 /* 1089 * If we are here, this is a shared queue and not all TIDs timed-out. 1090 * Remove the ones that did. 1091 */ 1092 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1093 u16 q_tid_bitmap; 1094 1095 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1096 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1097 1098 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1099 1100 /* 1101 * We need to take into account a situation in which a TXQ was 1102 * allocated to TID x, and then turned shared by adding TIDs y 1103 * and z. If TID x becomes inactive and is removed from the TXQ, 1104 * ownership must be given to one of the remaining TIDs. 1105 * This is mainly because if TID x continues - a new queue can't 1106 * be allocated for it as long as it is an owner of another TXQ. 1107 * 1108 * Mark this queue in the right bitmap, we'll send the command 1109 * to the firmware later. 1110 */ 1111 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1112 set_bit(queue, changetid_queues); 1113 1114 IWL_DEBUG_TX_QUEUES(mvm, 1115 "Removing inactive TID %d from shared Q:%d\n", 1116 tid, queue); 1117 } 1118 1119 IWL_DEBUG_TX_QUEUES(mvm, 1120 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1121 mvm->queue_info[queue].tid_bitmap); 1122 1123 /* 1124 * There may be different TIDs with the same mac queues, so make 1125 * sure all TIDs have existing corresponding mac queues enabled 1126 */ 1127 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1128 1129 /* If the queue is marked as shared - "unshare" it */ 1130 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1131 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1132 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1133 queue); 1134 set_bit(queue, unshare_queues); 1135 } 1136 1137 return false; 1138 } 1139 1140 /* 1141 * Check for inactivity - this includes checking if any queue 1142 * can be unshared and finding one (and only one) that can be 1143 * reused. 1144 * This function is also invoked as a sort of clean-up task, 1145 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1146 * 1147 * Returns the queue number, or -ENOSPC. 1148 */ 1149 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1150 { 1151 unsigned long now = jiffies; 1152 unsigned long unshare_queues = 0; 1153 unsigned long changetid_queues = 0; 1154 int i, ret, free_queue = -ENOSPC; 1155 struct ieee80211_sta *queue_owner = NULL; 1156 1157 lockdep_assert_held(&mvm->mutex); 1158 1159 if (iwl_mvm_has_new_tx_api(mvm)) 1160 return -ENOSPC; 1161 1162 rcu_read_lock(); 1163 1164 /* we skip the CMD queue below by starting at 1 */ 1165 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1166 1167 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1168 struct ieee80211_sta *sta; 1169 struct iwl_mvm_sta *mvmsta; 1170 u8 sta_id; 1171 int tid; 1172 unsigned long inactive_tid_bitmap = 0; 1173 unsigned long queue_tid_bitmap; 1174 1175 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1176 if (!queue_tid_bitmap) 1177 continue; 1178 1179 /* If TXQ isn't in active use anyway - nothing to do here... */ 1180 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1181 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1182 continue; 1183 1184 /* Check to see if there are inactive TIDs on this queue */ 1185 for_each_set_bit(tid, &queue_tid_bitmap, 1186 IWL_MAX_TID_COUNT + 1) { 1187 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1188 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1189 continue; 1190 1191 inactive_tid_bitmap |= BIT(tid); 1192 } 1193 1194 /* If all TIDs are active - finish check on this queue */ 1195 if (!inactive_tid_bitmap) 1196 continue; 1197 1198 /* 1199 * If we are here - the queue hadn't been served recently and is 1200 * in use 1201 */ 1202 1203 sta_id = mvm->queue_info[i].ra_sta_id; 1204 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1205 1206 /* 1207 * If the STA doesn't exist anymore, it isn't an error. It could 1208 * be that it was removed since getting the queues, and in this 1209 * case it should've inactivated its queues anyway. 1210 */ 1211 if (IS_ERR_OR_NULL(sta)) 1212 continue; 1213 1214 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1215 1216 spin_lock_bh(&mvmsta->lock); 1217 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1218 inactive_tid_bitmap, 1219 &unshare_queues, 1220 &changetid_queues); 1221 if (ret && free_queue < 0) { 1222 queue_owner = sta; 1223 free_queue = i; 1224 } 1225 /* only unlock sta lock - we still need the queue info lock */ 1226 spin_unlock_bh(&mvmsta->lock); 1227 } 1228 1229 1230 /* Reconfigure queues requiring reconfiguation */ 1231 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1232 iwl_mvm_unshare_queue(mvm, i); 1233 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1234 iwl_mvm_change_queue_tid(mvm, i); 1235 1236 rcu_read_unlock(); 1237 1238 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1239 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1240 alloc_for_sta); 1241 if (ret) 1242 return ret; 1243 } 1244 1245 return free_queue; 1246 } 1247 1248 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1249 struct ieee80211_sta *sta, u8 ac, int tid) 1250 { 1251 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1252 struct iwl_trans_txq_scd_cfg cfg = { 1253 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1254 .sta_id = mvmsta->sta_id, 1255 .tid = tid, 1256 .frame_limit = IWL_FRAME_LIMIT, 1257 }; 1258 unsigned int wdg_timeout = 1259 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1260 int queue = -1; 1261 u16 queue_tmp; 1262 unsigned long disable_agg_tids = 0; 1263 enum iwl_mvm_agg_state queue_state; 1264 bool shared_queue = false, inc_ssn; 1265 int ssn; 1266 unsigned long tfd_queue_mask; 1267 int ret; 1268 1269 lockdep_assert_held(&mvm->mutex); 1270 1271 if (iwl_mvm_has_new_tx_api(mvm)) 1272 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1273 1274 spin_lock_bh(&mvmsta->lock); 1275 tfd_queue_mask = mvmsta->tfd_queue_msk; 1276 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1277 spin_unlock_bh(&mvmsta->lock); 1278 1279 if (tid == IWL_MAX_TID_COUNT) { 1280 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1281 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1282 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1283 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1284 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1285 queue); 1286 1287 /* If no such queue is found, we'll use a DATA queue instead */ 1288 } 1289 1290 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1291 (mvm->queue_info[mvmsta->reserved_queue].status == 1292 IWL_MVM_QUEUE_RESERVED)) { 1293 queue = mvmsta->reserved_queue; 1294 mvm->queue_info[queue].reserved = true; 1295 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1296 } 1297 1298 if (queue < 0) 1299 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1300 IWL_MVM_DQA_MIN_DATA_QUEUE, 1301 IWL_MVM_DQA_MAX_DATA_QUEUE); 1302 if (queue < 0) { 1303 /* try harder - perhaps kill an inactive queue */ 1304 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1305 } 1306 1307 /* No free queue - we'll have to share */ 1308 if (queue <= 0) { 1309 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1310 if (queue > 0) { 1311 shared_queue = true; 1312 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1313 } 1314 } 1315 1316 /* 1317 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1318 * to make sure no one else takes it. 1319 * This will allow avoiding re-acquiring the lock at the end of the 1320 * configuration. On error we'll mark it back as free. 1321 */ 1322 if (queue > 0 && !shared_queue) 1323 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1324 1325 /* This shouldn't happen - out of queues */ 1326 if (WARN_ON(queue <= 0)) { 1327 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1328 tid, cfg.sta_id); 1329 return queue; 1330 } 1331 1332 /* 1333 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1334 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1335 * as aggregatable. 1336 * Mark all DATA queues as allowing to be aggregated at some point 1337 */ 1338 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1339 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1340 1341 IWL_DEBUG_TX_QUEUES(mvm, 1342 "Allocating %squeue #%d to sta %d on tid %d\n", 1343 shared_queue ? "shared " : "", queue, 1344 mvmsta->sta_id, tid); 1345 1346 if (shared_queue) { 1347 /* Disable any open aggs on this queue */ 1348 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1349 1350 if (disable_agg_tids) { 1351 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1352 queue); 1353 iwl_mvm_invalidate_sta_queue(mvm, queue, 1354 disable_agg_tids, false); 1355 } 1356 } 1357 1358 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1359 1360 /* 1361 * Mark queue as shared in transport if shared 1362 * Note this has to be done after queue enablement because enablement 1363 * can also set this value, and there is no indication there to shared 1364 * queues 1365 */ 1366 if (shared_queue) 1367 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1368 1369 spin_lock_bh(&mvmsta->lock); 1370 /* 1371 * This looks racy, but it is not. We have only one packet for 1372 * this ra/tid in our Tx path since we stop the Qdisc when we 1373 * need to allocate a new TFD queue. 1374 */ 1375 if (inc_ssn) { 1376 mvmsta->tid_data[tid].seq_number += 0x10; 1377 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1378 } 1379 mvmsta->tid_data[tid].txq_id = queue; 1380 mvmsta->tfd_queue_msk |= BIT(queue); 1381 queue_state = mvmsta->tid_data[tid].state; 1382 1383 if (mvmsta->reserved_queue == queue) 1384 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1385 spin_unlock_bh(&mvmsta->lock); 1386 1387 if (!shared_queue) { 1388 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1389 if (ret) 1390 goto out_err; 1391 1392 /* If we need to re-enable aggregations... */ 1393 if (queue_state == IWL_AGG_ON) { 1394 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1395 if (ret) 1396 goto out_err; 1397 } 1398 } else { 1399 /* Redirect queue, if needed */ 1400 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1401 wdg_timeout, false, 1402 iwl_mvm_txq_from_tid(sta, tid)); 1403 if (ret) 1404 goto out_err; 1405 } 1406 1407 return 0; 1408 1409 out_err: 1410 queue_tmp = queue; 1411 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid); 1412 1413 return ret; 1414 } 1415 1416 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1417 { 1418 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1419 add_stream_wk); 1420 1421 mutex_lock(&mvm->mutex); 1422 1423 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1424 1425 while (!list_empty(&mvm->add_stream_txqs)) { 1426 struct iwl_mvm_txq *mvmtxq; 1427 struct ieee80211_txq *txq; 1428 u8 tid; 1429 1430 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1431 struct iwl_mvm_txq, list); 1432 1433 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1434 drv_priv); 1435 tid = txq->tid; 1436 if (tid == IEEE80211_NUM_TIDS) 1437 tid = IWL_MAX_TID_COUNT; 1438 1439 /* 1440 * We can't really do much here, but if this fails we can't 1441 * transmit anyway - so just don't transmit the frame etc. 1442 * and let them back up ... we've tried our best to allocate 1443 * a queue in the function itself. 1444 */ 1445 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1446 list_del_init(&mvmtxq->list); 1447 continue; 1448 } 1449 1450 list_del_init(&mvmtxq->list); 1451 local_bh_disable(); 1452 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1453 local_bh_enable(); 1454 } 1455 1456 mutex_unlock(&mvm->mutex); 1457 } 1458 1459 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1460 struct ieee80211_sta *sta, 1461 enum nl80211_iftype vif_type) 1462 { 1463 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1464 int queue; 1465 1466 /* queue reserving is disabled on new TX path */ 1467 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1468 return 0; 1469 1470 /* run the general cleanup/unsharing of queues */ 1471 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1472 1473 /* Make sure we have free resources for this STA */ 1474 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1475 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1476 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1477 IWL_MVM_QUEUE_FREE)) 1478 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1479 else 1480 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1481 IWL_MVM_DQA_MIN_DATA_QUEUE, 1482 IWL_MVM_DQA_MAX_DATA_QUEUE); 1483 if (queue < 0) { 1484 /* try again - this time kick out a queue if needed */ 1485 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1486 if (queue < 0) { 1487 IWL_ERR(mvm, "No available queues for new station\n"); 1488 return -ENOSPC; 1489 } 1490 } 1491 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1492 1493 mvmsta->reserved_queue = queue; 1494 1495 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1496 queue, mvmsta->sta_id); 1497 1498 return 0; 1499 } 1500 1501 /* 1502 * In DQA mode, after a HW restart the queues should be allocated as before, in 1503 * order to avoid race conditions when there are shared queues. This function 1504 * does the re-mapping and queue allocation. 1505 * 1506 * Note that re-enabling aggregations isn't done in this function. 1507 */ 1508 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1509 struct ieee80211_sta *sta) 1510 { 1511 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1512 unsigned int wdg = 1513 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1514 int i; 1515 struct iwl_trans_txq_scd_cfg cfg = { 1516 .sta_id = mvm_sta->sta_id, 1517 .frame_limit = IWL_FRAME_LIMIT, 1518 }; 1519 1520 /* Make sure reserved queue is still marked as such (if allocated) */ 1521 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1522 mvm->queue_info[mvm_sta->reserved_queue].status = 1523 IWL_MVM_QUEUE_RESERVED; 1524 1525 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1526 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1527 int txq_id = tid_data->txq_id; 1528 int ac; 1529 1530 if (txq_id == IWL_MVM_INVALID_QUEUE) 1531 continue; 1532 1533 ac = tid_to_mac80211_ac[i]; 1534 1535 if (iwl_mvm_has_new_tx_api(mvm)) { 1536 IWL_DEBUG_TX_QUEUES(mvm, 1537 "Re-mapping sta %d tid %d\n", 1538 mvm_sta->sta_id, i); 1539 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1540 i, wdg); 1541 /* 1542 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1543 * to try again later, we have no other good way of 1544 * failing here 1545 */ 1546 if (txq_id < 0) 1547 txq_id = IWL_MVM_INVALID_QUEUE; 1548 tid_data->txq_id = txq_id; 1549 1550 /* 1551 * Since we don't set the seq number after reset, and HW 1552 * sets it now, FW reset will cause the seq num to start 1553 * at 0 again, so driver will need to update it 1554 * internally as well, so it keeps in sync with real val 1555 */ 1556 tid_data->seq_number = 0; 1557 } else { 1558 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1559 1560 cfg.tid = i; 1561 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1562 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1563 txq_id == 1564 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1565 1566 IWL_DEBUG_TX_QUEUES(mvm, 1567 "Re-mapping sta %d tid %d to queue %d\n", 1568 mvm_sta->sta_id, i, txq_id); 1569 1570 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1571 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1572 } 1573 } 1574 } 1575 1576 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1577 struct iwl_mvm_int_sta *sta, 1578 const u8 *addr, 1579 u16 mac_id, u16 color) 1580 { 1581 struct iwl_mvm_add_sta_cmd cmd; 1582 int ret; 1583 u32 status = ADD_STA_SUCCESS; 1584 1585 lockdep_assert_held(&mvm->mutex); 1586 1587 memset(&cmd, 0, sizeof(cmd)); 1588 cmd.sta_id = sta->sta_id; 1589 1590 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1591 sta->type == IWL_STA_AUX_ACTIVITY) 1592 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1593 else 1594 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1595 color)); 1596 1597 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1598 cmd.station_type = sta->type; 1599 1600 if (!iwl_mvm_has_new_tx_api(mvm)) 1601 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1602 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1603 1604 if (addr) 1605 memcpy(cmd.addr, addr, ETH_ALEN); 1606 1607 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1608 iwl_mvm_add_sta_cmd_size(mvm), 1609 &cmd, &status); 1610 if (ret) 1611 return ret; 1612 1613 switch (status & IWL_ADD_STA_STATUS_MASK) { 1614 case ADD_STA_SUCCESS: 1615 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1616 return 0; 1617 default: 1618 ret = -EIO; 1619 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1620 status); 1621 break; 1622 } 1623 return ret; 1624 } 1625 1626 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1627 struct ieee80211_vif *vif, 1628 struct ieee80211_sta *sta) 1629 { 1630 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1631 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1632 struct iwl_mvm_rxq_dup_data *dup_data; 1633 int i, ret, sta_id; 1634 bool sta_update = false; 1635 unsigned int sta_flags = 0; 1636 1637 lockdep_assert_held(&mvm->mutex); 1638 1639 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1640 sta_id = iwl_mvm_find_free_sta_id(mvm, 1641 ieee80211_vif_type_p2p(vif)); 1642 else 1643 sta_id = mvm_sta->sta_id; 1644 1645 if (sta_id == IWL_MVM_INVALID_STA) 1646 return -ENOSPC; 1647 1648 spin_lock_init(&mvm_sta->lock); 1649 1650 /* if this is a HW restart re-alloc existing queues */ 1651 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1652 struct iwl_mvm_int_sta tmp_sta = { 1653 .sta_id = sta_id, 1654 .type = mvm_sta->sta_type, 1655 }; 1656 1657 /* 1658 * First add an empty station since allocating 1659 * a queue requires a valid station 1660 */ 1661 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1662 mvmvif->id, mvmvif->color); 1663 if (ret) 1664 goto err; 1665 1666 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1667 sta_update = true; 1668 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1669 goto update_fw; 1670 } 1671 1672 mvm_sta->sta_id = sta_id; 1673 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1674 mvmvif->color); 1675 mvm_sta->vif = vif; 1676 if (!mvm->trans->trans_cfg->gen2) 1677 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1678 else 1679 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1680 mvm_sta->tx_protection = 0; 1681 mvm_sta->tt_tx_protection = false; 1682 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1683 1684 /* HW restart, don't assume the memory has been zeroed */ 1685 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1686 mvm_sta->tfd_queue_msk = 0; 1687 1688 /* for HW restart - reset everything but the sequence number */ 1689 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1690 u16 seq = mvm_sta->tid_data[i].seq_number; 1691 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1692 mvm_sta->tid_data[i].seq_number = seq; 1693 1694 /* 1695 * Mark all queues for this STA as unallocated and defer TX 1696 * frames until the queue is allocated 1697 */ 1698 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1699 } 1700 1701 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1702 struct iwl_mvm_txq *mvmtxq = 1703 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1704 1705 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1706 INIT_LIST_HEAD(&mvmtxq->list); 1707 atomic_set(&mvmtxq->tx_request, 0); 1708 } 1709 1710 mvm_sta->agg_tids = 0; 1711 1712 if (iwl_mvm_has_new_rx_api(mvm) && 1713 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1714 int q; 1715 1716 dup_data = kcalloc(mvm->trans->num_rx_queues, 1717 sizeof(*dup_data), GFP_KERNEL); 1718 if (!dup_data) 1719 return -ENOMEM; 1720 /* 1721 * Initialize all the last_seq values to 0xffff which can never 1722 * compare equal to the frame's seq_ctrl in the check in 1723 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1724 * number and fragmented packets don't reach that function. 1725 * 1726 * This thus allows receiving a packet with seqno 0 and the 1727 * retry bit set as the very first packet on a new TID. 1728 */ 1729 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1730 memset(dup_data[q].last_seq, 0xff, 1731 sizeof(dup_data[q].last_seq)); 1732 mvm_sta->dup_data = dup_data; 1733 } 1734 1735 if (!iwl_mvm_has_new_tx_api(mvm)) { 1736 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1737 ieee80211_vif_type_p2p(vif)); 1738 if (ret) 1739 goto err; 1740 } 1741 1742 /* 1743 * if rs is registered with mac80211, then "add station" will be handled 1744 * via the corresponding ops, otherwise need to notify rate scaling here 1745 */ 1746 if (iwl_mvm_has_tlc_offload(mvm)) 1747 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1748 else 1749 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1750 1751 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1752 1753 update_fw: 1754 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1755 if (ret) 1756 goto err; 1757 1758 if (vif->type == NL80211_IFTYPE_STATION) { 1759 if (!sta->tdls) { 1760 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1761 mvmvif->ap_sta_id = sta_id; 1762 } else { 1763 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1764 } 1765 } 1766 1767 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1768 1769 return 0; 1770 1771 err: 1772 return ret; 1773 } 1774 1775 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1776 bool drain) 1777 { 1778 struct iwl_mvm_add_sta_cmd cmd = {}; 1779 int ret; 1780 u32 status; 1781 1782 lockdep_assert_held(&mvm->mutex); 1783 1784 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1785 cmd.sta_id = mvmsta->sta_id; 1786 cmd.add_modify = STA_MODE_MODIFY; 1787 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1788 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1789 1790 status = ADD_STA_SUCCESS; 1791 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1792 iwl_mvm_add_sta_cmd_size(mvm), 1793 &cmd, &status); 1794 if (ret) 1795 return ret; 1796 1797 switch (status & IWL_ADD_STA_STATUS_MASK) { 1798 case ADD_STA_SUCCESS: 1799 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1800 mvmsta->sta_id); 1801 break; 1802 default: 1803 ret = -EIO; 1804 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1805 mvmsta->sta_id); 1806 break; 1807 } 1808 1809 return ret; 1810 } 1811 1812 /* 1813 * Remove a station from the FW table. Before sending the command to remove 1814 * the station validate that the station is indeed known to the driver (sanity 1815 * only). 1816 */ 1817 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1818 { 1819 struct ieee80211_sta *sta; 1820 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1821 .sta_id = sta_id, 1822 }; 1823 int ret; 1824 1825 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1826 lockdep_is_held(&mvm->mutex)); 1827 1828 /* Note: internal stations are marked as error values */ 1829 if (!sta) { 1830 IWL_ERR(mvm, "Invalid station id\n"); 1831 return -EINVAL; 1832 } 1833 1834 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1835 sizeof(rm_sta_cmd), &rm_sta_cmd); 1836 if (ret) { 1837 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1838 return ret; 1839 } 1840 1841 return 0; 1842 } 1843 1844 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1845 struct ieee80211_vif *vif, 1846 struct ieee80211_sta *sta) 1847 { 1848 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1849 int i; 1850 1851 lockdep_assert_held(&mvm->mutex); 1852 1853 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1854 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1855 continue; 1856 1857 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i); 1858 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1859 } 1860 1861 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1862 struct iwl_mvm_txq *mvmtxq = 1863 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1864 1865 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1866 list_del_init(&mvmtxq->list); 1867 } 1868 } 1869 1870 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1871 struct iwl_mvm_sta *mvm_sta) 1872 { 1873 int i; 1874 1875 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1876 u16 txq_id; 1877 int ret; 1878 1879 spin_lock_bh(&mvm_sta->lock); 1880 txq_id = mvm_sta->tid_data[i].txq_id; 1881 spin_unlock_bh(&mvm_sta->lock); 1882 1883 if (txq_id == IWL_MVM_INVALID_QUEUE) 1884 continue; 1885 1886 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1887 if (ret) 1888 return ret; 1889 } 1890 1891 return 0; 1892 } 1893 1894 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1895 struct ieee80211_vif *vif, 1896 struct ieee80211_sta *sta) 1897 { 1898 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1899 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1900 u8 sta_id = mvm_sta->sta_id; 1901 int ret; 1902 1903 lockdep_assert_held(&mvm->mutex); 1904 1905 if (iwl_mvm_has_new_rx_api(mvm)) 1906 kfree(mvm_sta->dup_data); 1907 1908 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1909 if (ret) 1910 return ret; 1911 1912 /* flush its queues here since we are freeing mvm_sta */ 1913 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1914 if (ret) 1915 return ret; 1916 if (iwl_mvm_has_new_tx_api(mvm)) { 1917 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1918 } else { 1919 u32 q_mask = mvm_sta->tfd_queue_msk; 1920 1921 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1922 q_mask); 1923 } 1924 if (ret) 1925 return ret; 1926 1927 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1928 1929 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1930 1931 /* If there is a TXQ still marked as reserved - free it */ 1932 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1933 u8 reserved_txq = mvm_sta->reserved_queue; 1934 enum iwl_mvm_queue_status *status; 1935 1936 /* 1937 * If no traffic has gone through the reserved TXQ - it 1938 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1939 * should be manually marked as free again 1940 */ 1941 status = &mvm->queue_info[reserved_txq].status; 1942 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1943 (*status != IWL_MVM_QUEUE_FREE), 1944 "sta_id %d reserved txq %d status %d", 1945 sta_id, reserved_txq, *status)) 1946 return -EINVAL; 1947 1948 *status = IWL_MVM_QUEUE_FREE; 1949 } 1950 1951 if (vif->type == NL80211_IFTYPE_STATION && 1952 mvmvif->ap_sta_id == sta_id) { 1953 /* if associated - we can't remove the AP STA now */ 1954 if (vif->cfg.assoc) 1955 return ret; 1956 1957 /* unassoc - go ahead - remove the AP STA now */ 1958 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1959 } 1960 1961 /* 1962 * This shouldn't happen - the TDLS channel switch should be canceled 1963 * before the STA is removed. 1964 */ 1965 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1966 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1967 cancel_delayed_work(&mvm->tdls_cs.dwork); 1968 } 1969 1970 /* 1971 * Make sure that the tx response code sees the station as -EBUSY and 1972 * calls the drain worker. 1973 */ 1974 spin_lock_bh(&mvm_sta->lock); 1975 spin_unlock_bh(&mvm_sta->lock); 1976 1977 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1978 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1979 1980 return ret; 1981 } 1982 1983 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1984 struct ieee80211_vif *vif, 1985 u8 sta_id) 1986 { 1987 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1988 1989 lockdep_assert_held(&mvm->mutex); 1990 1991 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1992 return ret; 1993 } 1994 1995 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1996 struct iwl_mvm_int_sta *sta, 1997 u32 qmask, enum nl80211_iftype iftype, 1998 enum iwl_sta_type type) 1999 { 2000 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2001 sta->sta_id == IWL_MVM_INVALID_STA) { 2002 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2003 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2004 return -ENOSPC; 2005 } 2006 2007 sta->tfd_queue_msk = qmask; 2008 sta->type = type; 2009 2010 /* put a non-NULL value so iterating over the stations won't stop */ 2011 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2012 return 0; 2013 } 2014 2015 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2016 { 2017 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2018 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2019 sta->sta_id = IWL_MVM_INVALID_STA; 2020 } 2021 2022 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2023 u8 sta_id, u8 fifo) 2024 { 2025 unsigned int wdg_timeout = 2026 mvm->trans->trans_cfg->base_params->wd_timeout; 2027 struct iwl_trans_txq_scd_cfg cfg = { 2028 .fifo = fifo, 2029 .sta_id = sta_id, 2030 .tid = IWL_MAX_TID_COUNT, 2031 .aggregate = false, 2032 .frame_limit = IWL_FRAME_LIMIT, 2033 }; 2034 2035 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2036 2037 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2038 } 2039 2040 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2041 { 2042 unsigned int wdg_timeout = 2043 mvm->trans->trans_cfg->base_params->wd_timeout; 2044 2045 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2046 2047 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 2048 wdg_timeout); 2049 } 2050 2051 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2052 int maccolor, u8 *addr, 2053 struct iwl_mvm_int_sta *sta, 2054 u16 *queue, int fifo) 2055 { 2056 int ret; 2057 2058 /* Map queue to fifo - needs to happen before adding station */ 2059 if (!iwl_mvm_has_new_tx_api(mvm)) 2060 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2061 2062 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2063 if (ret) { 2064 if (!iwl_mvm_has_new_tx_api(mvm)) 2065 iwl_mvm_disable_txq(mvm, NULL, queue, 2066 IWL_MAX_TID_COUNT); 2067 return ret; 2068 } 2069 2070 /* 2071 * For 22000 firmware and on we cannot add queue to a station unknown 2072 * to firmware so enable queue here - after the station was added 2073 */ 2074 if (iwl_mvm_has_new_tx_api(mvm)) { 2075 int txq; 2076 2077 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2078 if (txq < 0) { 2079 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2080 return txq; 2081 } 2082 2083 *queue = txq; 2084 } 2085 2086 return 0; 2087 } 2088 2089 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2090 { 2091 int ret; 2092 2093 lockdep_assert_held(&mvm->mutex); 2094 2095 /* Allocate aux station and assign to it the aux queue */ 2096 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2097 NL80211_IFTYPE_UNSPECIFIED, 2098 IWL_STA_AUX_ACTIVITY); 2099 if (ret) 2100 return ret; 2101 2102 /* 2103 * In CDB NICs we need to specify which lmac to use for aux activity 2104 * using the mac_id argument place to send lmac_id to the function 2105 */ 2106 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2107 &mvm->aux_sta, &mvm->aux_queue, 2108 IWL_MVM_TX_FIFO_MCAST); 2109 if (ret) { 2110 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2111 return ret; 2112 } 2113 2114 return 0; 2115 } 2116 2117 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2118 { 2119 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2120 2121 lockdep_assert_held(&mvm->mutex); 2122 2123 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2124 NULL, &mvm->snif_sta, 2125 &mvm->snif_queue, 2126 IWL_MVM_TX_FIFO_BE); 2127 } 2128 2129 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2130 { 2131 int ret; 2132 2133 lockdep_assert_held(&mvm->mutex); 2134 2135 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2136 return -EINVAL; 2137 2138 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT); 2139 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2140 if (ret) 2141 IWL_WARN(mvm, "Failed sending remove station\n"); 2142 2143 return ret; 2144 } 2145 2146 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2147 { 2148 int ret; 2149 2150 lockdep_assert_held(&mvm->mutex); 2151 2152 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2153 return -EINVAL; 2154 2155 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT); 2156 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2157 if (ret) 2158 IWL_WARN(mvm, "Failed sending remove station\n"); 2159 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2160 2161 return ret; 2162 } 2163 2164 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2165 { 2166 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2167 } 2168 2169 /* 2170 * Send the add station command for the vif's broadcast station. 2171 * Assumes that the station was already allocated. 2172 * 2173 * @mvm: the mvm component 2174 * @vif: the interface to which the broadcast station is added 2175 * @bsta: the broadcast station to add. 2176 */ 2177 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2178 { 2179 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2180 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2181 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2182 const u8 *baddr = _baddr; 2183 int queue; 2184 int ret; 2185 unsigned int wdg_timeout = 2186 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2187 struct iwl_trans_txq_scd_cfg cfg = { 2188 .fifo = IWL_MVM_TX_FIFO_VO, 2189 .sta_id = mvmvif->bcast_sta.sta_id, 2190 .tid = IWL_MAX_TID_COUNT, 2191 .aggregate = false, 2192 .frame_limit = IWL_FRAME_LIMIT, 2193 }; 2194 2195 lockdep_assert_held(&mvm->mutex); 2196 2197 if (!iwl_mvm_has_new_tx_api(mvm)) { 2198 if (vif->type == NL80211_IFTYPE_AP || 2199 vif->type == NL80211_IFTYPE_ADHOC) { 2200 queue = mvm->probe_queue; 2201 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2202 queue = mvm->p2p_dev_queue; 2203 } else { 2204 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2205 return -EINVAL; 2206 } 2207 2208 bsta->tfd_queue_msk |= BIT(queue); 2209 2210 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2211 } 2212 2213 if (vif->type == NL80211_IFTYPE_ADHOC) 2214 baddr = vif->bss_conf.bssid; 2215 2216 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2217 return -ENOSPC; 2218 2219 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2220 mvmvif->id, mvmvif->color); 2221 if (ret) 2222 return ret; 2223 2224 /* 2225 * For 22000 firmware and on we cannot add queue to a station unknown 2226 * to firmware so enable queue here - after the station was added 2227 */ 2228 if (iwl_mvm_has_new_tx_api(mvm)) { 2229 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2230 IWL_MAX_TID_COUNT, 2231 wdg_timeout); 2232 if (queue < 0) { 2233 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2234 return queue; 2235 } 2236 2237 if (vif->type == NL80211_IFTYPE_AP || 2238 vif->type == NL80211_IFTYPE_ADHOC) 2239 mvm->probe_queue = queue; 2240 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2241 mvm->p2p_dev_queue = queue; 2242 } 2243 2244 return 0; 2245 } 2246 2247 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2248 struct ieee80211_vif *vif) 2249 { 2250 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2251 u16 *queueptr, queue; 2252 2253 lockdep_assert_held(&mvm->mutex); 2254 2255 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2256 2257 switch (vif->type) { 2258 case NL80211_IFTYPE_AP: 2259 case NL80211_IFTYPE_ADHOC: 2260 queueptr = &mvm->probe_queue; 2261 break; 2262 case NL80211_IFTYPE_P2P_DEVICE: 2263 queueptr = &mvm->p2p_dev_queue; 2264 break; 2265 default: 2266 WARN(1, "Can't free bcast queue on vif type %d\n", 2267 vif->type); 2268 return; 2269 } 2270 2271 queue = *queueptr; 2272 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT); 2273 if (iwl_mvm_has_new_tx_api(mvm)) 2274 return; 2275 2276 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2277 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2278 } 2279 2280 /* Send the FW a request to remove the station from it's internal data 2281 * structures, but DO NOT remove the entry from the local data structures. */ 2282 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2283 { 2284 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2285 int ret; 2286 2287 lockdep_assert_held(&mvm->mutex); 2288 2289 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2290 2291 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2292 if (ret) 2293 IWL_WARN(mvm, "Failed sending remove station\n"); 2294 return ret; 2295 } 2296 2297 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2298 { 2299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2300 2301 lockdep_assert_held(&mvm->mutex); 2302 2303 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2304 ieee80211_vif_type_p2p(vif), 2305 IWL_STA_GENERAL_PURPOSE); 2306 } 2307 2308 /* Allocate a new station entry for the broadcast station to the given vif, 2309 * and send it to the FW. 2310 * Note that each P2P mac should have its own broadcast station. 2311 * 2312 * @mvm: the mvm component 2313 * @vif: the interface to which the broadcast station is added 2314 * @bsta: the broadcast station to add. */ 2315 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2316 { 2317 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2318 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2319 int ret; 2320 2321 lockdep_assert_held(&mvm->mutex); 2322 2323 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2324 if (ret) 2325 return ret; 2326 2327 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2328 2329 if (ret) 2330 iwl_mvm_dealloc_int_sta(mvm, bsta); 2331 2332 return ret; 2333 } 2334 2335 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2336 { 2337 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2338 2339 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2340 } 2341 2342 /* 2343 * Send the FW a request to remove the station from it's internal data 2344 * structures, and in addition remove it from the local data structure. 2345 */ 2346 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2347 { 2348 int ret; 2349 2350 lockdep_assert_held(&mvm->mutex); 2351 2352 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2353 2354 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2355 2356 return ret; 2357 } 2358 2359 /* 2360 * Allocate a new station entry for the multicast station to the given vif, 2361 * and send it to the FW. 2362 * Note that each AP/GO mac should have its own multicast station. 2363 * 2364 * @mvm: the mvm component 2365 * @vif: the interface to which the multicast station is added 2366 */ 2367 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2368 { 2369 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2370 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2371 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2372 const u8 *maddr = _maddr; 2373 struct iwl_trans_txq_scd_cfg cfg = { 2374 .fifo = vif->type == NL80211_IFTYPE_AP ? 2375 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2376 .sta_id = msta->sta_id, 2377 .tid = 0, 2378 .aggregate = false, 2379 .frame_limit = IWL_FRAME_LIMIT, 2380 }; 2381 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2382 int ret; 2383 2384 lockdep_assert_held(&mvm->mutex); 2385 2386 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2387 vif->type != NL80211_IFTYPE_ADHOC)) 2388 return -ENOTSUPP; 2389 2390 /* 2391 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2392 * invalid, so make sure we use the queue we want. 2393 * Note that this is done here as we want to avoid making DQA 2394 * changes in mac80211 layer. 2395 */ 2396 if (vif->type == NL80211_IFTYPE_ADHOC) 2397 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2398 2399 /* 2400 * While in previous FWs we had to exclude cab queue from TFD queue 2401 * mask, now it is needed as any other queue. 2402 */ 2403 if (!iwl_mvm_has_new_tx_api(mvm) && 2404 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2405 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2406 timeout); 2407 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2408 } 2409 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2410 mvmvif->id, mvmvif->color); 2411 if (ret) 2412 goto err; 2413 2414 /* 2415 * Enable cab queue after the ADD_STA command is sent. 2416 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2417 * command with unknown station id, and for FW that doesn't support 2418 * station API since the cab queue is not included in the 2419 * tfd_queue_mask. 2420 */ 2421 if (iwl_mvm_has_new_tx_api(mvm)) { 2422 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2423 0, 2424 timeout); 2425 if (queue < 0) { 2426 ret = queue; 2427 goto err; 2428 } 2429 mvmvif->cab_queue = queue; 2430 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2431 IWL_UCODE_TLV_API_STA_TYPE)) 2432 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2433 timeout); 2434 2435 return 0; 2436 err: 2437 iwl_mvm_dealloc_int_sta(mvm, msta); 2438 return ret; 2439 } 2440 2441 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2442 struct ieee80211_key_conf *keyconf, 2443 bool mcast) 2444 { 2445 union { 2446 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2447 struct iwl_mvm_add_sta_key_cmd cmd; 2448 } u = {}; 2449 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2450 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2451 __le16 key_flags; 2452 int ret, size; 2453 u32 status; 2454 2455 /* This is a valid situation for GTK removal */ 2456 if (sta_id == IWL_MVM_INVALID_STA) 2457 return 0; 2458 2459 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2460 STA_KEY_FLG_KEYID_MSK); 2461 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2462 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2463 2464 if (mcast) 2465 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2466 2467 /* 2468 * The fields assigned here are in the same location at the start 2469 * of the command, so we can do this union trick. 2470 */ 2471 u.cmd.common.key_flags = key_flags; 2472 u.cmd.common.key_offset = keyconf->hw_key_idx; 2473 u.cmd.common.sta_id = sta_id; 2474 2475 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2476 2477 status = ADD_STA_SUCCESS; 2478 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2479 &status); 2480 2481 switch (status) { 2482 case ADD_STA_SUCCESS: 2483 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2484 break; 2485 default: 2486 ret = -EIO; 2487 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2488 break; 2489 } 2490 2491 return ret; 2492 } 2493 2494 /* 2495 * Send the FW a request to remove the station from it's internal data 2496 * structures, and in addition remove it from the local data structure. 2497 */ 2498 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2499 { 2500 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2501 int ret; 2502 2503 lockdep_assert_held(&mvm->mutex); 2504 2505 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2506 2507 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0); 2508 2509 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2510 if (ret) 2511 IWL_WARN(mvm, "Failed sending remove station\n"); 2512 2513 return ret; 2514 } 2515 2516 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2517 { 2518 struct iwl_mvm_delba_data notif = { 2519 .baid = baid, 2520 }; 2521 2522 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2523 ¬if, sizeof(notif)); 2524 }; 2525 2526 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2527 struct iwl_mvm_baid_data *data) 2528 { 2529 int i; 2530 2531 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2532 2533 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2534 int j; 2535 struct iwl_mvm_reorder_buffer *reorder_buf = 2536 &data->reorder_buf[i]; 2537 struct iwl_mvm_reorder_buf_entry *entries = 2538 &data->entries[i * data->entries_per_queue]; 2539 2540 spin_lock_bh(&reorder_buf->lock); 2541 if (likely(!reorder_buf->num_stored)) { 2542 spin_unlock_bh(&reorder_buf->lock); 2543 continue; 2544 } 2545 2546 /* 2547 * This shouldn't happen in regular DELBA since the internal 2548 * delBA notification should trigger a release of all frames in 2549 * the reorder buffer. 2550 */ 2551 WARN_ON(1); 2552 2553 for (j = 0; j < reorder_buf->buf_size; j++) 2554 __skb_queue_purge(&entries[j].e.frames); 2555 /* 2556 * Prevent timer re-arm. This prevents a very far fetched case 2557 * where we timed out on the notification. There may be prior 2558 * RX frames pending in the RX queue before the notification 2559 * that might get processed between now and the actual deletion 2560 * and we would re-arm the timer although we are deleting the 2561 * reorder buffer. 2562 */ 2563 reorder_buf->removed = true; 2564 spin_unlock_bh(&reorder_buf->lock); 2565 del_timer_sync(&reorder_buf->reorder_timer); 2566 } 2567 } 2568 2569 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2570 struct iwl_mvm_baid_data *data, 2571 u16 ssn, u16 buf_size) 2572 { 2573 int i; 2574 2575 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2576 struct iwl_mvm_reorder_buffer *reorder_buf = 2577 &data->reorder_buf[i]; 2578 struct iwl_mvm_reorder_buf_entry *entries = 2579 &data->entries[i * data->entries_per_queue]; 2580 int j; 2581 2582 reorder_buf->num_stored = 0; 2583 reorder_buf->head_sn = ssn; 2584 reorder_buf->buf_size = buf_size; 2585 /* rx reorder timer */ 2586 timer_setup(&reorder_buf->reorder_timer, 2587 iwl_mvm_reorder_timer_expired, 0); 2588 spin_lock_init(&reorder_buf->lock); 2589 reorder_buf->mvm = mvm; 2590 reorder_buf->queue = i; 2591 reorder_buf->valid = false; 2592 for (j = 0; j < reorder_buf->buf_size; j++) 2593 __skb_queue_head_init(&entries[j].e.frames); 2594 } 2595 } 2596 2597 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2598 struct iwl_mvm_sta *mvm_sta, 2599 bool start, int tid, u16 ssn, 2600 u16 buf_size) 2601 { 2602 struct iwl_mvm_add_sta_cmd cmd = { 2603 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2604 .sta_id = mvm_sta->sta_id, 2605 .add_modify = STA_MODE_MODIFY, 2606 }; 2607 u32 status; 2608 int ret; 2609 2610 if (start) { 2611 cmd.add_immediate_ba_tid = tid; 2612 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2613 cmd.rx_ba_window = cpu_to_le16(buf_size); 2614 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2615 } else { 2616 cmd.remove_immediate_ba_tid = tid; 2617 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2618 } 2619 2620 status = ADD_STA_SUCCESS; 2621 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2622 iwl_mvm_add_sta_cmd_size(mvm), 2623 &cmd, &status); 2624 if (ret) 2625 return ret; 2626 2627 switch (status & IWL_ADD_STA_STATUS_MASK) { 2628 case ADD_STA_SUCCESS: 2629 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2630 start ? "start" : "stopp"); 2631 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2632 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2633 return -EINVAL; 2634 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2635 case ADD_STA_IMMEDIATE_BA_FAILURE: 2636 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2637 return -ENOSPC; 2638 default: 2639 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2640 start ? "start" : "stopp", status); 2641 return -EIO; 2642 } 2643 } 2644 2645 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2646 struct iwl_mvm_sta *mvm_sta, 2647 bool start, int tid, u16 ssn, 2648 u16 buf_size, int baid) 2649 { 2650 struct iwl_rx_baid_cfg_cmd cmd = { 2651 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2652 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2653 }; 2654 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2655 int ret; 2656 2657 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2658 2659 if (start) { 2660 cmd.alloc.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2661 cmd.alloc.tid = tid; 2662 cmd.alloc.ssn = cpu_to_le16(ssn); 2663 cmd.alloc.win_size = cpu_to_le16(buf_size); 2664 baid = -EIO; 2665 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2666 cmd.remove_v1.baid = cpu_to_le32(baid); 2667 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2668 } else { 2669 cmd.remove.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2670 cmd.remove.tid = cpu_to_le32(tid); 2671 } 2672 2673 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2674 &cmd, &baid); 2675 if (ret) 2676 return ret; 2677 2678 if (!start) { 2679 /* ignore firmware baid on remove */ 2680 baid = 0; 2681 } 2682 2683 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2684 start ? "start" : "stopp"); 2685 2686 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2687 return -EINVAL; 2688 2689 return baid; 2690 } 2691 2692 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta, 2693 bool start, int tid, u16 ssn, u16 buf_size, 2694 int baid) 2695 { 2696 if (fw_has_capa(&mvm->fw->ucode_capa, 2697 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2698 return iwl_mvm_fw_baid_op_cmd(mvm, mvm_sta, start, 2699 tid, ssn, buf_size, baid); 2700 2701 return iwl_mvm_fw_baid_op_sta(mvm, mvm_sta, start, 2702 tid, ssn, buf_size); 2703 } 2704 2705 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2706 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2707 { 2708 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2709 struct iwl_mvm_baid_data *baid_data = NULL; 2710 int ret, baid; 2711 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2712 IWL_MAX_BAID_OLD; 2713 2714 lockdep_assert_held(&mvm->mutex); 2715 2716 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2717 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2718 return -ENOSPC; 2719 } 2720 2721 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2722 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2723 2724 /* sparse doesn't like the __align() so don't check */ 2725 #ifndef __CHECKER__ 2726 /* 2727 * The division below will be OK if either the cache line size 2728 * can be divided by the entry size (ALIGN will round up) or if 2729 * if the entry size can be divided by the cache line size, in 2730 * which case the ALIGN() will do nothing. 2731 */ 2732 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2733 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2734 #endif 2735 2736 /* 2737 * Upward align the reorder buffer size to fill an entire cache 2738 * line for each queue, to avoid sharing cache lines between 2739 * different queues. 2740 */ 2741 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2742 2743 /* 2744 * Allocate here so if allocation fails we can bail out early 2745 * before starting the BA session in the firmware 2746 */ 2747 baid_data = kzalloc(sizeof(*baid_data) + 2748 mvm->trans->num_rx_queues * 2749 reorder_buf_size, 2750 GFP_KERNEL); 2751 if (!baid_data) 2752 return -ENOMEM; 2753 2754 /* 2755 * This division is why we need the above BUILD_BUG_ON(), 2756 * if that doesn't hold then this will not be right. 2757 */ 2758 baid_data->entries_per_queue = 2759 reorder_buf_size / sizeof(baid_data->entries[0]); 2760 } 2761 2762 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2763 baid = mvm_sta->tid_to_baid[tid]; 2764 } else { 2765 /* we don't really need it in this case */ 2766 baid = -1; 2767 } 2768 2769 /* Don't send command to remove (start=0) BAID during restart */ 2770 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2771 baid = iwl_mvm_fw_baid_op(mvm, mvm_sta, start, tid, ssn, buf_size, 2772 baid); 2773 2774 if (baid < 0) { 2775 ret = baid; 2776 goto out_free; 2777 } 2778 2779 if (start) { 2780 mvm->rx_ba_sessions++; 2781 2782 if (!iwl_mvm_has_new_rx_api(mvm)) 2783 return 0; 2784 2785 baid_data->baid = baid; 2786 baid_data->timeout = timeout; 2787 baid_data->last_rx = jiffies; 2788 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2789 timer_setup(&baid_data->session_timer, 2790 iwl_mvm_rx_agg_session_expired, 0); 2791 baid_data->mvm = mvm; 2792 baid_data->tid = tid; 2793 baid_data->sta_id = mvm_sta->sta_id; 2794 2795 mvm_sta->tid_to_baid[tid] = baid; 2796 if (timeout) 2797 mod_timer(&baid_data->session_timer, 2798 TU_TO_EXP_TIME(timeout * 2)); 2799 2800 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2801 /* 2802 * protect the BA data with RCU to cover a case where our 2803 * internal RX sync mechanism will timeout (not that it's 2804 * supposed to happen) and we will free the session data while 2805 * RX is being processed in parallel 2806 */ 2807 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2808 mvm_sta->sta_id, tid, baid); 2809 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2810 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2811 } else { 2812 baid = mvm_sta->tid_to_baid[tid]; 2813 2814 if (mvm->rx_ba_sessions > 0) 2815 /* check that restart flow didn't zero the counter */ 2816 mvm->rx_ba_sessions--; 2817 if (!iwl_mvm_has_new_rx_api(mvm)) 2818 return 0; 2819 2820 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2821 return -EINVAL; 2822 2823 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2824 if (WARN_ON(!baid_data)) 2825 return -EINVAL; 2826 2827 /* synchronize all rx queues so we can safely delete */ 2828 iwl_mvm_free_reorder(mvm, baid_data); 2829 del_timer_sync(&baid_data->session_timer); 2830 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2831 kfree_rcu(baid_data, rcu_head); 2832 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2833 2834 /* 2835 * After we've deleted it, do another queue sync 2836 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2837 * running it won't find a new session in the old 2838 * BAID. It can find the NULL pointer for the BAID, 2839 * but we must not have it find a different session. 2840 */ 2841 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2842 true, NULL, 0); 2843 } 2844 return 0; 2845 2846 out_free: 2847 kfree(baid_data); 2848 return ret; 2849 } 2850 2851 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2852 int tid, u8 queue, bool start) 2853 { 2854 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2855 struct iwl_mvm_add_sta_cmd cmd = {}; 2856 int ret; 2857 u32 status; 2858 2859 lockdep_assert_held(&mvm->mutex); 2860 2861 if (start) { 2862 mvm_sta->tfd_queue_msk |= BIT(queue); 2863 mvm_sta->tid_disable_agg &= ~BIT(tid); 2864 } else { 2865 /* In DQA-mode the queue isn't removed on agg termination */ 2866 mvm_sta->tid_disable_agg |= BIT(tid); 2867 } 2868 2869 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2870 cmd.sta_id = mvm_sta->sta_id; 2871 cmd.add_modify = STA_MODE_MODIFY; 2872 if (!iwl_mvm_has_new_tx_api(mvm)) 2873 cmd.modify_mask = STA_MODIFY_QUEUES; 2874 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2875 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2876 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2877 2878 status = ADD_STA_SUCCESS; 2879 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2880 iwl_mvm_add_sta_cmd_size(mvm), 2881 &cmd, &status); 2882 if (ret) 2883 return ret; 2884 2885 switch (status & IWL_ADD_STA_STATUS_MASK) { 2886 case ADD_STA_SUCCESS: 2887 break; 2888 default: 2889 ret = -EIO; 2890 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2891 start ? "start" : "stopp", status); 2892 break; 2893 } 2894 2895 return ret; 2896 } 2897 2898 const u8 tid_to_mac80211_ac[] = { 2899 IEEE80211_AC_BE, 2900 IEEE80211_AC_BK, 2901 IEEE80211_AC_BK, 2902 IEEE80211_AC_BE, 2903 IEEE80211_AC_VI, 2904 IEEE80211_AC_VI, 2905 IEEE80211_AC_VO, 2906 IEEE80211_AC_VO, 2907 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2908 }; 2909 2910 static const u8 tid_to_ucode_ac[] = { 2911 AC_BE, 2912 AC_BK, 2913 AC_BK, 2914 AC_BE, 2915 AC_VI, 2916 AC_VI, 2917 AC_VO, 2918 AC_VO, 2919 }; 2920 2921 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2922 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2923 { 2924 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2925 struct iwl_mvm_tid_data *tid_data; 2926 u16 normalized_ssn; 2927 u16 txq_id; 2928 int ret; 2929 2930 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2931 return -EINVAL; 2932 2933 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2934 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2935 IWL_ERR(mvm, 2936 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2937 mvmsta->tid_data[tid].state); 2938 return -ENXIO; 2939 } 2940 2941 lockdep_assert_held(&mvm->mutex); 2942 2943 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2944 iwl_mvm_has_new_tx_api(mvm)) { 2945 u8 ac = tid_to_mac80211_ac[tid]; 2946 2947 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2948 if (ret) 2949 return ret; 2950 } 2951 2952 spin_lock_bh(&mvmsta->lock); 2953 2954 /* 2955 * Note the possible cases: 2956 * 1. An enabled TXQ - TXQ needs to become agg'ed 2957 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2958 * it as reserved 2959 */ 2960 txq_id = mvmsta->tid_data[tid].txq_id; 2961 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2962 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2963 IWL_MVM_DQA_MIN_DATA_QUEUE, 2964 IWL_MVM_DQA_MAX_DATA_QUEUE); 2965 if (ret < 0) { 2966 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2967 goto out; 2968 } 2969 2970 txq_id = ret; 2971 2972 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2973 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2974 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2975 ret = -ENXIO; 2976 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2977 tid, IWL_MAX_HW_QUEUES - 1); 2978 goto out; 2979 2980 } else if (unlikely(mvm->queue_info[txq_id].status == 2981 IWL_MVM_QUEUE_SHARED)) { 2982 ret = -ENXIO; 2983 IWL_DEBUG_TX_QUEUES(mvm, 2984 "Can't start tid %d agg on shared queue!\n", 2985 tid); 2986 goto out; 2987 } 2988 2989 IWL_DEBUG_TX_QUEUES(mvm, 2990 "AGG for tid %d will be on queue #%d\n", 2991 tid, txq_id); 2992 2993 tid_data = &mvmsta->tid_data[tid]; 2994 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2995 tid_data->txq_id = txq_id; 2996 *ssn = tid_data->ssn; 2997 2998 IWL_DEBUG_TX_QUEUES(mvm, 2999 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3000 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 3001 tid_data->next_reclaimed); 3002 3003 /* 3004 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3005 * to align the wrap around of ssn so we compare relevant values. 3006 */ 3007 normalized_ssn = tid_data->ssn; 3008 if (mvm->trans->trans_cfg->gen2) 3009 normalized_ssn &= 0xff; 3010 3011 if (normalized_ssn == tid_data->next_reclaimed) { 3012 tid_data->state = IWL_AGG_STARTING; 3013 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3014 } else { 3015 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3016 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3017 } 3018 3019 out: 3020 spin_unlock_bh(&mvmsta->lock); 3021 3022 return ret; 3023 } 3024 3025 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3026 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3027 bool amsdu) 3028 { 3029 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3030 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3031 unsigned int wdg_timeout = 3032 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3033 int queue, ret; 3034 bool alloc_queue = true; 3035 enum iwl_mvm_queue_status queue_status; 3036 u16 ssn; 3037 3038 struct iwl_trans_txq_scd_cfg cfg = { 3039 .sta_id = mvmsta->sta_id, 3040 .tid = tid, 3041 .frame_limit = buf_size, 3042 .aggregate = true, 3043 }; 3044 3045 /* 3046 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3047 * manager, so this function should never be called in this case. 3048 */ 3049 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3050 return -EINVAL; 3051 3052 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3053 != IWL_MAX_TID_COUNT); 3054 3055 spin_lock_bh(&mvmsta->lock); 3056 ssn = tid_data->ssn; 3057 queue = tid_data->txq_id; 3058 tid_data->state = IWL_AGG_ON; 3059 mvmsta->agg_tids |= BIT(tid); 3060 tid_data->ssn = 0xffff; 3061 tid_data->amsdu_in_ampdu_allowed = amsdu; 3062 spin_unlock_bh(&mvmsta->lock); 3063 3064 if (iwl_mvm_has_new_tx_api(mvm)) { 3065 /* 3066 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3067 * would have failed, so if we are here there is no need to 3068 * allocate a queue. 3069 * However, if aggregation size is different than the default 3070 * size, the scheduler should be reconfigured. 3071 * We cannot do this with the new TX API, so return unsupported 3072 * for now, until it will be offloaded to firmware.. 3073 * Note that if SCD default value changes - this condition 3074 * should be updated as well. 3075 */ 3076 if (buf_size < IWL_FRAME_LIMIT) 3077 return -ENOTSUPP; 3078 3079 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3080 if (ret) 3081 return -EIO; 3082 goto out; 3083 } 3084 3085 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3086 3087 queue_status = mvm->queue_info[queue].status; 3088 3089 /* Maybe there is no need to even alloc a queue... */ 3090 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3091 alloc_queue = false; 3092 3093 /* 3094 * Only reconfig the SCD for the queue if the window size has 3095 * changed from current (become smaller) 3096 */ 3097 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3098 /* 3099 * If reconfiguring an existing queue, it first must be 3100 * drained 3101 */ 3102 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3103 BIT(queue)); 3104 if (ret) { 3105 IWL_ERR(mvm, 3106 "Error draining queue before reconfig\n"); 3107 return ret; 3108 } 3109 3110 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3111 mvmsta->sta_id, tid, 3112 buf_size, ssn); 3113 if (ret) { 3114 IWL_ERR(mvm, 3115 "Error reconfiguring TXQ #%d\n", queue); 3116 return ret; 3117 } 3118 } 3119 3120 if (alloc_queue) 3121 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3122 &cfg, wdg_timeout); 3123 3124 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3125 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3126 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3127 if (ret) 3128 return -EIO; 3129 } 3130 3131 /* No need to mark as reserved */ 3132 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3133 3134 out: 3135 /* 3136 * Even though in theory the peer could have different 3137 * aggregation reorder buffer sizes for different sessions, 3138 * our ucode doesn't allow for that and has a global limit 3139 * for each station. Therefore, use the minimum of all the 3140 * aggregation sessions and our default value. 3141 */ 3142 mvmsta->max_agg_bufsize = 3143 min(mvmsta->max_agg_bufsize, buf_size); 3144 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3145 3146 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3147 sta->addr, tid); 3148 3149 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3150 } 3151 3152 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3153 struct iwl_mvm_sta *mvmsta, 3154 struct iwl_mvm_tid_data *tid_data) 3155 { 3156 u16 txq_id = tid_data->txq_id; 3157 3158 lockdep_assert_held(&mvm->mutex); 3159 3160 if (iwl_mvm_has_new_tx_api(mvm)) 3161 return; 3162 3163 /* 3164 * The TXQ is marked as reserved only if no traffic came through yet 3165 * This means no traffic has been sent on this TID (agg'd or not), so 3166 * we no longer have use for the queue. Since it hasn't even been 3167 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3168 * free. 3169 */ 3170 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3171 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3172 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3173 } 3174 } 3175 3176 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3177 struct ieee80211_sta *sta, u16 tid) 3178 { 3179 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3180 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3181 u16 txq_id; 3182 int err; 3183 3184 /* 3185 * If mac80211 is cleaning its state, then say that we finished since 3186 * our state has been cleared anyway. 3187 */ 3188 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3189 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3190 return 0; 3191 } 3192 3193 spin_lock_bh(&mvmsta->lock); 3194 3195 txq_id = tid_data->txq_id; 3196 3197 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3198 mvmsta->sta_id, tid, txq_id, tid_data->state); 3199 3200 mvmsta->agg_tids &= ~BIT(tid); 3201 3202 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3203 3204 switch (tid_data->state) { 3205 case IWL_AGG_ON: 3206 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3207 3208 IWL_DEBUG_TX_QUEUES(mvm, 3209 "ssn = %d, next_recl = %d\n", 3210 tid_data->ssn, tid_data->next_reclaimed); 3211 3212 tid_data->ssn = 0xffff; 3213 tid_data->state = IWL_AGG_OFF; 3214 spin_unlock_bh(&mvmsta->lock); 3215 3216 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3217 3218 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3219 return 0; 3220 case IWL_AGG_STARTING: 3221 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3222 /* 3223 * The agg session has been stopped before it was set up. This 3224 * can happen when the AddBA timer times out for example. 3225 */ 3226 3227 /* No barriers since we are under mutex */ 3228 lockdep_assert_held(&mvm->mutex); 3229 3230 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3231 tid_data->state = IWL_AGG_OFF; 3232 err = 0; 3233 break; 3234 default: 3235 IWL_ERR(mvm, 3236 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3237 mvmsta->sta_id, tid, tid_data->state); 3238 IWL_ERR(mvm, 3239 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3240 err = -EINVAL; 3241 } 3242 3243 spin_unlock_bh(&mvmsta->lock); 3244 3245 return err; 3246 } 3247 3248 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3249 struct ieee80211_sta *sta, u16 tid) 3250 { 3251 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3252 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3253 u16 txq_id; 3254 enum iwl_mvm_agg_state old_state; 3255 3256 /* 3257 * First set the agg state to OFF to avoid calling 3258 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3259 */ 3260 spin_lock_bh(&mvmsta->lock); 3261 txq_id = tid_data->txq_id; 3262 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3263 mvmsta->sta_id, tid, txq_id, tid_data->state); 3264 old_state = tid_data->state; 3265 tid_data->state = IWL_AGG_OFF; 3266 mvmsta->agg_tids &= ~BIT(tid); 3267 spin_unlock_bh(&mvmsta->lock); 3268 3269 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3270 3271 if (old_state >= IWL_AGG_ON) { 3272 iwl_mvm_drain_sta(mvm, mvmsta, true); 3273 3274 if (iwl_mvm_has_new_tx_api(mvm)) { 3275 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3276 BIT(tid))) 3277 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3278 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3279 } else { 3280 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3281 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3282 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3283 } 3284 3285 iwl_mvm_drain_sta(mvm, mvmsta, false); 3286 3287 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3288 } 3289 3290 return 0; 3291 } 3292 3293 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3294 { 3295 int i, max = -1, max_offs = -1; 3296 3297 lockdep_assert_held(&mvm->mutex); 3298 3299 /* Pick the unused key offset with the highest 'deleted' 3300 * counter. Every time a key is deleted, all the counters 3301 * are incremented and the one that was just deleted is 3302 * reset to zero. Thus, the highest counter is the one 3303 * that was deleted longest ago. Pick that one. 3304 */ 3305 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3306 if (test_bit(i, mvm->fw_key_table)) 3307 continue; 3308 if (mvm->fw_key_deleted[i] > max) { 3309 max = mvm->fw_key_deleted[i]; 3310 max_offs = i; 3311 } 3312 } 3313 3314 if (max_offs < 0) 3315 return STA_KEY_IDX_INVALID; 3316 3317 return max_offs; 3318 } 3319 3320 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3321 struct ieee80211_vif *vif, 3322 struct ieee80211_sta *sta) 3323 { 3324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3325 3326 if (sta) 3327 return iwl_mvm_sta_from_mac80211(sta); 3328 3329 /* 3330 * The device expects GTKs for station interfaces to be 3331 * installed as GTKs for the AP station. If we have no 3332 * station ID, then use AP's station ID. 3333 */ 3334 if (vif->type == NL80211_IFTYPE_STATION && 3335 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3336 u8 sta_id = mvmvif->ap_sta_id; 3337 3338 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3339 lockdep_is_held(&mvm->mutex)); 3340 3341 /* 3342 * It is possible that the 'sta' parameter is NULL, 3343 * for example when a GTK is removed - the sta_id will then 3344 * be the AP ID, and no station was passed by mac80211. 3345 */ 3346 if (IS_ERR_OR_NULL(sta)) 3347 return NULL; 3348 3349 return iwl_mvm_sta_from_mac80211(sta); 3350 } 3351 3352 return NULL; 3353 } 3354 3355 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3356 { 3357 int i; 3358 3359 for (i = len - 1; i >= 0; i--) { 3360 if (pn1[i] > pn2[i]) 3361 return 1; 3362 if (pn1[i] < pn2[i]) 3363 return -1; 3364 } 3365 3366 return 0; 3367 } 3368 3369 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3370 u32 sta_id, 3371 struct ieee80211_key_conf *key, bool mcast, 3372 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3373 u8 key_offset, bool mfp) 3374 { 3375 union { 3376 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3377 struct iwl_mvm_add_sta_key_cmd cmd; 3378 } u = {}; 3379 __le16 key_flags; 3380 int ret; 3381 u32 status; 3382 u16 keyidx; 3383 u64 pn = 0; 3384 int i, size; 3385 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3386 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3387 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3388 new_api ? 2 : 1); 3389 3390 if (sta_id == IWL_MVM_INVALID_STA) 3391 return -EINVAL; 3392 3393 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3394 STA_KEY_FLG_KEYID_MSK; 3395 key_flags = cpu_to_le16(keyidx); 3396 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3397 3398 switch (key->cipher) { 3399 case WLAN_CIPHER_SUITE_TKIP: 3400 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3401 if (api_ver >= 2) { 3402 memcpy((void *)&u.cmd.tx_mic_key, 3403 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3404 IWL_MIC_KEY_SIZE); 3405 3406 memcpy((void *)&u.cmd.rx_mic_key, 3407 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3408 IWL_MIC_KEY_SIZE); 3409 pn = atomic64_read(&key->tx_pn); 3410 3411 } else { 3412 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3413 for (i = 0; i < 5; i++) 3414 u.cmd_v1.tkip_rx_ttak[i] = 3415 cpu_to_le16(tkip_p1k[i]); 3416 } 3417 memcpy(u.cmd.common.key, key->key, key->keylen); 3418 break; 3419 case WLAN_CIPHER_SUITE_CCMP: 3420 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3421 memcpy(u.cmd.common.key, key->key, key->keylen); 3422 if (api_ver >= 2) 3423 pn = atomic64_read(&key->tx_pn); 3424 break; 3425 case WLAN_CIPHER_SUITE_WEP104: 3426 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3427 fallthrough; 3428 case WLAN_CIPHER_SUITE_WEP40: 3429 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3430 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3431 break; 3432 case WLAN_CIPHER_SUITE_GCMP_256: 3433 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3434 fallthrough; 3435 case WLAN_CIPHER_SUITE_GCMP: 3436 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3437 memcpy(u.cmd.common.key, key->key, key->keylen); 3438 if (api_ver >= 2) 3439 pn = atomic64_read(&key->tx_pn); 3440 break; 3441 default: 3442 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3443 memcpy(u.cmd.common.key, key->key, key->keylen); 3444 } 3445 3446 if (mcast) 3447 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3448 if (mfp) 3449 key_flags |= cpu_to_le16(STA_KEY_MFP); 3450 3451 u.cmd.common.key_offset = key_offset; 3452 u.cmd.common.key_flags = key_flags; 3453 u.cmd.common.sta_id = sta_id; 3454 3455 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3456 i = 0; 3457 else 3458 i = -1; 3459 3460 for (; i < IEEE80211_NUM_TIDS; i++) { 3461 struct ieee80211_key_seq seq = {}; 3462 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3463 int rx_pn_len = 8; 3464 /* there's a hole at 2/3 in FW format depending on version */ 3465 int hole = api_ver >= 3 ? 0 : 2; 3466 3467 ieee80211_get_key_rx_seq(key, i, &seq); 3468 3469 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3470 rx_pn[0] = seq.tkip.iv16; 3471 rx_pn[1] = seq.tkip.iv16 >> 8; 3472 rx_pn[2 + hole] = seq.tkip.iv32; 3473 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3474 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3475 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3476 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3477 rx_pn = seq.hw.seq; 3478 rx_pn_len = seq.hw.seq_len; 3479 } else { 3480 rx_pn[0] = seq.ccmp.pn[0]; 3481 rx_pn[1] = seq.ccmp.pn[1]; 3482 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3483 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3484 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3485 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3486 } 3487 3488 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3489 rx_pn_len) > 0) 3490 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3491 rx_pn_len); 3492 } 3493 3494 if (api_ver >= 2) { 3495 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3496 size = sizeof(u.cmd); 3497 } else { 3498 size = sizeof(u.cmd_v1); 3499 } 3500 3501 status = ADD_STA_SUCCESS; 3502 if (cmd_flags & CMD_ASYNC) 3503 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3504 &u.cmd); 3505 else 3506 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3507 &u.cmd, &status); 3508 3509 switch (status) { 3510 case ADD_STA_SUCCESS: 3511 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3512 break; 3513 default: 3514 ret = -EIO; 3515 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3516 break; 3517 } 3518 3519 return ret; 3520 } 3521 3522 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3523 struct ieee80211_key_conf *keyconf, 3524 u8 sta_id, bool remove_key) 3525 { 3526 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3527 3528 /* verify the key details match the required command's expectations */ 3529 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3530 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3531 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3532 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3533 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3534 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3535 return -EINVAL; 3536 3537 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3538 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3539 return -EINVAL; 3540 3541 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3542 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3543 3544 if (remove_key) { 3545 /* This is a valid situation for IGTK */ 3546 if (sta_id == IWL_MVM_INVALID_STA) 3547 return 0; 3548 3549 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3550 } else { 3551 struct ieee80211_key_seq seq; 3552 const u8 *pn; 3553 3554 switch (keyconf->cipher) { 3555 case WLAN_CIPHER_SUITE_AES_CMAC: 3556 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3557 break; 3558 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3559 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3560 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3561 break; 3562 default: 3563 return -EINVAL; 3564 } 3565 3566 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3567 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3568 igtk_cmd.ctrl_flags |= 3569 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3570 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3571 pn = seq.aes_cmac.pn; 3572 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3573 ((u64) pn[4] << 8) | 3574 ((u64) pn[3] << 16) | 3575 ((u64) pn[2] << 24) | 3576 ((u64) pn[1] << 32) | 3577 ((u64) pn[0] << 40)); 3578 } 3579 3580 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3581 remove_key ? "removing" : "installing", 3582 keyconf->keyidx >= 6 ? "B" : "", 3583 keyconf->keyidx, igtk_cmd.sta_id); 3584 3585 if (!iwl_mvm_has_new_rx_api(mvm)) { 3586 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3587 .ctrl_flags = igtk_cmd.ctrl_flags, 3588 .key_id = igtk_cmd.key_id, 3589 .sta_id = igtk_cmd.sta_id, 3590 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3591 }; 3592 3593 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3594 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3595 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3596 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3597 } 3598 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3599 sizeof(igtk_cmd), &igtk_cmd); 3600 } 3601 3602 3603 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3604 struct ieee80211_vif *vif, 3605 struct ieee80211_sta *sta) 3606 { 3607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3608 3609 if (sta) 3610 return sta->addr; 3611 3612 if (vif->type == NL80211_IFTYPE_STATION && 3613 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3614 u8 sta_id = mvmvif->ap_sta_id; 3615 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3616 lockdep_is_held(&mvm->mutex)); 3617 return sta->addr; 3618 } 3619 3620 3621 return NULL; 3622 } 3623 3624 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3625 struct ieee80211_vif *vif, 3626 struct ieee80211_sta *sta, 3627 struct ieee80211_key_conf *keyconf, 3628 u8 key_offset, 3629 bool mcast) 3630 { 3631 const u8 *addr; 3632 struct ieee80211_key_seq seq; 3633 u16 p1k[5]; 3634 u32 sta_id; 3635 bool mfp = false; 3636 3637 if (sta) { 3638 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3639 3640 sta_id = mvm_sta->sta_id; 3641 mfp = sta->mfp; 3642 } else if (vif->type == NL80211_IFTYPE_AP && 3643 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3644 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3645 3646 sta_id = mvmvif->mcast_sta.sta_id; 3647 } else { 3648 IWL_ERR(mvm, "Failed to find station id\n"); 3649 return -EINVAL; 3650 } 3651 3652 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3653 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3654 /* get phase 1 key from mac80211 */ 3655 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3656 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3657 3658 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3659 seq.tkip.iv32, p1k, 0, key_offset, 3660 mfp); 3661 } 3662 3663 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3664 0, NULL, 0, key_offset, mfp); 3665 } 3666 3667 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3668 struct ieee80211_vif *vif, 3669 struct ieee80211_sta *sta, 3670 struct ieee80211_key_conf *keyconf, 3671 u8 key_offset) 3672 { 3673 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3674 struct iwl_mvm_sta *mvm_sta; 3675 u8 sta_id = IWL_MVM_INVALID_STA; 3676 int ret; 3677 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3678 3679 lockdep_assert_held(&mvm->mutex); 3680 3681 if (vif->type != NL80211_IFTYPE_AP || 3682 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3683 /* Get the station id from the mvm local station table */ 3684 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3685 if (!mvm_sta) { 3686 IWL_ERR(mvm, "Failed to find station\n"); 3687 return -EINVAL; 3688 } 3689 sta_id = mvm_sta->sta_id; 3690 3691 /* 3692 * It is possible that the 'sta' parameter is NULL, and thus 3693 * there is a need to retrieve the sta from the local station 3694 * table. 3695 */ 3696 if (!sta) { 3697 sta = rcu_dereference_protected( 3698 mvm->fw_id_to_mac_id[sta_id], 3699 lockdep_is_held(&mvm->mutex)); 3700 if (IS_ERR_OR_NULL(sta)) { 3701 IWL_ERR(mvm, "Invalid station id\n"); 3702 return -EINVAL; 3703 } 3704 } 3705 3706 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3707 return -EINVAL; 3708 } else { 3709 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3710 3711 sta_id = mvmvif->mcast_sta.sta_id; 3712 } 3713 3714 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3715 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3716 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3717 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3718 goto end; 3719 } 3720 3721 /* If the key_offset is not pre-assigned, we need to find a 3722 * new offset to use. In normal cases, the offset is not 3723 * pre-assigned, but during HW_RESTART we want to reuse the 3724 * same indices, so we pass them when this function is called. 3725 * 3726 * In D3 entry, we need to hardcoded the indices (because the 3727 * firmware hardcodes the PTK offset to 0). In this case, we 3728 * need to make sure we don't overwrite the hw_key_idx in the 3729 * keyconf structure, because otherwise we cannot configure 3730 * the original ones back when resuming. 3731 */ 3732 if (key_offset == STA_KEY_IDX_INVALID) { 3733 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3734 if (key_offset == STA_KEY_IDX_INVALID) 3735 return -ENOSPC; 3736 keyconf->hw_key_idx = key_offset; 3737 } 3738 3739 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3740 if (ret) 3741 goto end; 3742 3743 /* 3744 * For WEP, the same key is used for multicast and unicast. Upload it 3745 * again, using the same key offset, and now pointing the other one 3746 * to the same key slot (offset). 3747 * If this fails, remove the original as well. 3748 */ 3749 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3750 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3751 sta) { 3752 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3753 key_offset, !mcast); 3754 if (ret) { 3755 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3756 goto end; 3757 } 3758 } 3759 3760 __set_bit(key_offset, mvm->fw_key_table); 3761 3762 end: 3763 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3764 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3765 sta ? sta->addr : zero_addr, ret); 3766 return ret; 3767 } 3768 3769 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3770 struct ieee80211_vif *vif, 3771 struct ieee80211_sta *sta, 3772 struct ieee80211_key_conf *keyconf) 3773 { 3774 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3775 struct iwl_mvm_sta *mvm_sta; 3776 u8 sta_id = IWL_MVM_INVALID_STA; 3777 int ret, i; 3778 3779 lockdep_assert_held(&mvm->mutex); 3780 3781 /* Get the station from the mvm local station table */ 3782 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3783 if (mvm_sta) 3784 sta_id = mvm_sta->sta_id; 3785 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3786 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3787 3788 3789 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3790 keyconf->keyidx, sta_id); 3791 3792 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3793 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3794 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3795 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3796 3797 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3798 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3799 keyconf->hw_key_idx); 3800 return -ENOENT; 3801 } 3802 3803 /* track which key was deleted last */ 3804 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3805 if (mvm->fw_key_deleted[i] < U8_MAX) 3806 mvm->fw_key_deleted[i]++; 3807 } 3808 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3809 3810 if (sta && !mvm_sta) { 3811 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3812 return 0; 3813 } 3814 3815 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3816 if (ret) 3817 return ret; 3818 3819 /* delete WEP key twice to get rid of (now useless) offset */ 3820 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3821 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3822 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3823 3824 return ret; 3825 } 3826 3827 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3828 struct ieee80211_vif *vif, 3829 struct ieee80211_key_conf *keyconf, 3830 struct ieee80211_sta *sta, u32 iv32, 3831 u16 *phase1key) 3832 { 3833 struct iwl_mvm_sta *mvm_sta; 3834 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3835 bool mfp = sta ? sta->mfp : false; 3836 3837 rcu_read_lock(); 3838 3839 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3840 if (WARN_ON_ONCE(!mvm_sta)) 3841 goto unlock; 3842 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3843 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3844 mfp); 3845 3846 unlock: 3847 rcu_read_unlock(); 3848 } 3849 3850 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3851 struct ieee80211_sta *sta) 3852 { 3853 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3854 struct iwl_mvm_add_sta_cmd cmd = { 3855 .add_modify = STA_MODE_MODIFY, 3856 .sta_id = mvmsta->sta_id, 3857 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3858 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3859 }; 3860 int ret; 3861 3862 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3863 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3864 if (ret) 3865 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3866 } 3867 3868 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3869 struct ieee80211_sta *sta, 3870 enum ieee80211_frame_release_type reason, 3871 u16 cnt, u16 tids, bool more_data, 3872 bool single_sta_queue) 3873 { 3874 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3875 struct iwl_mvm_add_sta_cmd cmd = { 3876 .add_modify = STA_MODE_MODIFY, 3877 .sta_id = mvmsta->sta_id, 3878 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3879 .sleep_tx_count = cpu_to_le16(cnt), 3880 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3881 }; 3882 int tid, ret; 3883 unsigned long _tids = tids; 3884 3885 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3886 * Note that this field is reserved and unused by firmware not 3887 * supporting GO uAPSD, so it's safe to always do this. 3888 */ 3889 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3890 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3891 3892 /* If we're releasing frames from aggregation or dqa queues then check 3893 * if all the queues that we're releasing frames from, combined, have: 3894 * - more frames than the service period, in which case more_data 3895 * needs to be set 3896 * - fewer than 'cnt' frames, in which case we need to adjust the 3897 * firmware command (but do that unconditionally) 3898 */ 3899 if (single_sta_queue) { 3900 int remaining = cnt; 3901 int sleep_tx_count; 3902 3903 spin_lock_bh(&mvmsta->lock); 3904 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3905 struct iwl_mvm_tid_data *tid_data; 3906 u16 n_queued; 3907 3908 tid_data = &mvmsta->tid_data[tid]; 3909 3910 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3911 if (n_queued > remaining) { 3912 more_data = true; 3913 remaining = 0; 3914 break; 3915 } 3916 remaining -= n_queued; 3917 } 3918 sleep_tx_count = cnt - remaining; 3919 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3920 mvmsta->sleep_tx_count = sleep_tx_count; 3921 spin_unlock_bh(&mvmsta->lock); 3922 3923 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3924 if (WARN_ON(cnt - remaining == 0)) { 3925 ieee80211_sta_eosp(sta); 3926 return; 3927 } 3928 } 3929 3930 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3931 if (more_data) 3932 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3933 3934 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3935 mvmsta->next_status_eosp = true; 3936 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3937 } else { 3938 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3939 } 3940 3941 /* block the Tx queues until the FW updated the sleep Tx count */ 3942 iwl_trans_block_txq_ptrs(mvm->trans, true); 3943 3944 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3945 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3946 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3947 if (ret) 3948 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3949 } 3950 3951 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3952 struct iwl_rx_cmd_buffer *rxb) 3953 { 3954 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3955 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3956 struct ieee80211_sta *sta; 3957 u32 sta_id = le32_to_cpu(notif->sta_id); 3958 3959 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3960 return; 3961 3962 rcu_read_lock(); 3963 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3964 if (!IS_ERR_OR_NULL(sta)) 3965 ieee80211_sta_eosp(sta); 3966 rcu_read_unlock(); 3967 } 3968 3969 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3970 struct iwl_mvm_sta *mvmsta, bool disable) 3971 { 3972 struct iwl_mvm_add_sta_cmd cmd = { 3973 .add_modify = STA_MODE_MODIFY, 3974 .sta_id = mvmsta->sta_id, 3975 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3976 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3977 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3978 }; 3979 int ret; 3980 3981 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3982 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3983 if (ret) 3984 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3985 } 3986 3987 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3988 struct ieee80211_sta *sta, 3989 bool disable) 3990 { 3991 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3992 3993 spin_lock_bh(&mvm_sta->lock); 3994 3995 if (mvm_sta->disable_tx == disable) { 3996 spin_unlock_bh(&mvm_sta->lock); 3997 return; 3998 } 3999 4000 mvm_sta->disable_tx = disable; 4001 4002 /* 4003 * If sta PS state is handled by mac80211, tell it to start/stop 4004 * queuing tx for this station. 4005 */ 4006 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4007 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4008 4009 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4010 4011 spin_unlock_bh(&mvm_sta->lock); 4012 } 4013 4014 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4015 struct iwl_mvm_vif *mvmvif, 4016 struct iwl_mvm_int_sta *sta, 4017 bool disable) 4018 { 4019 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4020 struct iwl_mvm_add_sta_cmd cmd = { 4021 .add_modify = STA_MODE_MODIFY, 4022 .sta_id = sta->sta_id, 4023 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4024 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4025 .mac_id_n_color = cpu_to_le32(id), 4026 }; 4027 int ret; 4028 4029 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4030 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4031 if (ret) 4032 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4033 } 4034 4035 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4036 struct iwl_mvm_vif *mvmvif, 4037 bool disable) 4038 { 4039 struct ieee80211_sta *sta; 4040 struct iwl_mvm_sta *mvm_sta; 4041 int i; 4042 4043 rcu_read_lock(); 4044 4045 /* Block/unblock all the stations of the given mvmvif */ 4046 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4047 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4048 if (IS_ERR_OR_NULL(sta)) 4049 continue; 4050 4051 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4052 if (mvm_sta->mac_id_n_color != 4053 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4054 continue; 4055 4056 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4057 } 4058 4059 rcu_read_unlock(); 4060 4061 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4062 return; 4063 4064 /* Need to block/unblock also multicast station */ 4065 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4066 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4067 &mvmvif->mcast_sta, disable); 4068 4069 /* 4070 * Only unblock the broadcast station (FW blocks it for immediate 4071 * quiet, not the driver) 4072 */ 4073 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4074 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4075 &mvmvif->bcast_sta, disable); 4076 } 4077 4078 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4079 { 4080 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4081 struct iwl_mvm_sta *mvmsta; 4082 4083 rcu_read_lock(); 4084 4085 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 4086 4087 if (mvmsta) 4088 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4089 4090 rcu_read_unlock(); 4091 } 4092 4093 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4094 { 4095 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4096 4097 /* 4098 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4099 * to align the wrap around of ssn so we compare relevant values. 4100 */ 4101 if (mvm->trans->trans_cfg->gen2) 4102 sn &= 0xff; 4103 4104 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4105 } 4106 4107 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4108 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4109 u8 *key, u32 key_len) 4110 { 4111 int ret; 4112 u16 queue; 4113 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4114 struct ieee80211_key_conf *keyconf; 4115 4116 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4117 NL80211_IFTYPE_UNSPECIFIED, 4118 IWL_STA_LINK); 4119 if (ret) 4120 return ret; 4121 4122 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4123 addr, sta, &queue, 4124 IWL_MVM_TX_FIFO_BE); 4125 if (ret) 4126 goto out; 4127 4128 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4129 if (!keyconf) { 4130 ret = -ENOBUFS; 4131 goto out; 4132 } 4133 4134 keyconf->cipher = cipher; 4135 memcpy(keyconf->key, key, key_len); 4136 keyconf->keylen = key_len; 4137 4138 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4139 0, NULL, 0, 0, true); 4140 kfree(keyconf); 4141 return 0; 4142 out: 4143 iwl_mvm_dealloc_int_sta(mvm, sta); 4144 return ret; 4145 } 4146 4147 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4148 struct ieee80211_vif *vif, 4149 u32 mac_id) 4150 { 4151 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4152 .mac_id = cpu_to_le32(mac_id), 4153 }; 4154 int ret; 4155 4156 ret = iwl_mvm_send_cmd_pdu(mvm, 4157 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4158 CMD_ASYNC, 4159 sizeof(cancel_channel_switch_cmd), 4160 &cancel_channel_switch_cmd); 4161 if (ret) 4162 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4163 } 4164