1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 Intel Corporation
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
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20 * General Public License for more details.
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30 * Contact Information:
31 * Intel Linux Wireless <linuxwifi@intel.com>
32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
36 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
37 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
38 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
39 * Copyright(c) 2018 Intel Corporation
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66 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 *****************************************************************************/
69 #include <net/mac80211.h>
76 * New version of ADD_STA_sta command added new fields at the end of the
77 * structure, so sending the size of the relevant API's structure is enough to
78 * support both API versions.
80 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
82 if (iwl_mvm_has_new_rx_api(mvm) ||
83 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
84 return sizeof(struct iwl_mvm_add_sta_cmd);
86 return sizeof(struct iwl_mvm_add_sta_cmd_v7);
89 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm,
90 enum nl80211_iftype iftype)
95 BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32);
96 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
98 lockdep_assert_held(&mvm->mutex);
100 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
101 if (iftype != NL80211_IFTYPE_STATION)
102 reserved_ids = BIT(0);
104 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
105 for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); sta_id++) {
106 if (BIT(sta_id) & reserved_ids)
109 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
110 lockdep_is_held(&mvm->mutex)))
113 return IWL_MVM_INVALID_STA;
116 /* send station add/update command to firmware */
117 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
118 bool update, unsigned int flags)
120 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
121 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
122 .sta_id = mvm_sta->sta_id,
123 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
124 .add_modify = update ? 1 : 0,
125 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
126 STA_FLG_MIMO_EN_MSK |
127 STA_FLG_RTS_MIMO_PROT),
128 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
132 u32 agg_size = 0, mpdu_dens = 0;
134 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
135 add_sta_cmd.station_type = mvm_sta->sta_type;
137 if (!update || (flags & STA_MODIFY_QUEUES)) {
138 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
140 if (!iwl_mvm_has_new_tx_api(mvm)) {
141 add_sta_cmd.tfd_queue_msk =
142 cpu_to_le32(mvm_sta->tfd_queue_msk);
144 if (flags & STA_MODIFY_QUEUES)
145 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
147 WARN_ON(flags & STA_MODIFY_QUEUES);
151 switch (sta->bandwidth) {
152 case IEEE80211_STA_RX_BW_160:
153 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
155 case IEEE80211_STA_RX_BW_80:
156 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
158 case IEEE80211_STA_RX_BW_40:
159 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
161 case IEEE80211_STA_RX_BW_20:
162 if (sta->ht_cap.ht_supported)
163 add_sta_cmd.station_flags |=
164 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
168 switch (sta->rx_nss) {
170 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
173 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
176 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
180 switch (sta->smps_mode) {
181 case IEEE80211_SMPS_AUTOMATIC:
182 case IEEE80211_SMPS_NUM_MODES:
185 case IEEE80211_SMPS_STATIC:
187 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
188 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
190 case IEEE80211_SMPS_DYNAMIC:
191 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
193 case IEEE80211_SMPS_OFF:
198 if (sta->ht_cap.ht_supported) {
199 add_sta_cmd.station_flags_msk |=
200 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
201 STA_FLG_AGG_MPDU_DENS_MSK);
203 mpdu_dens = sta->ht_cap.ampdu_density;
206 if (sta->vht_cap.vht_supported) {
207 agg_size = sta->vht_cap.cap &
208 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
210 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
211 } else if (sta->ht_cap.ht_supported) {
212 agg_size = sta->ht_cap.ampdu_factor;
215 add_sta_cmd.station_flags |=
216 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
217 add_sta_cmd.station_flags |=
218 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
219 if (mvm_sta->associated)
220 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);
223 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;
225 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
226 add_sta_cmd.uapsd_acs |= BIT(AC_BK);
227 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
228 add_sta_cmd.uapsd_acs |= BIT(AC_BE);
229 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
230 add_sta_cmd.uapsd_acs |= BIT(AC_VI);
231 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
232 add_sta_cmd.uapsd_acs |= BIT(AC_VO);
233 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4;
234 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;
237 status = ADD_STA_SUCCESS;
238 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
239 iwl_mvm_add_sta_cmd_size(mvm),
240 &add_sta_cmd, &status);
244 switch (status & IWL_ADD_STA_STATUS_MASK) {
245 case ADD_STA_SUCCESS:
246 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
250 IWL_ERR(mvm, "ADD_STA failed\n");
257 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)
259 struct iwl_mvm_baid_data *data =
260 from_timer(data, t, session_timer);
261 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;
262 struct iwl_mvm_baid_data *ba_data;
263 struct ieee80211_sta *sta;
264 struct iwl_mvm_sta *mvm_sta;
265 unsigned long timeout;
269 ba_data = rcu_dereference(*rcu_ptr);
271 if (WARN_ON(!ba_data))
274 if (!ba_data->timeout)
277 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
278 if (time_is_after_jiffies(timeout)) {
279 mod_timer(&ba_data->session_timer, timeout);
284 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]);
287 * sta should be valid unless the following happens:
288 * The firmware asserts which triggers a reconfig flow, but
289 * the reconfig fails before we set the pointer to sta into
290 * the fw_id_to_mac_id pointer table. Mac80211 can't stop
291 * A-MDPU and hence the timer continues to run. Then, the
292 * timer expires and sta is NULL.
297 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
298 ieee80211_rx_ba_timer_expired(mvm_sta->vif,
299 sta->addr, ba_data->tid);
304 /* Disable aggregations for a bitmap of TIDs for a given station */
305 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
306 unsigned long disable_agg_tids,
309 struct iwl_mvm_add_sta_cmd cmd = {};
310 struct ieee80211_sta *sta;
311 struct iwl_mvm_sta *mvmsta;
316 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
319 spin_lock_bh(&mvm->queue_info_lock);
320 sta_id = mvm->queue_info[queue].ra_sta_id;
321 spin_unlock_bh(&mvm->queue_info_lock);
325 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
327 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
332 mvmsta = iwl_mvm_sta_from_mac80211(sta);
334 mvmsta->tid_disable_agg |= disable_agg_tids;
336 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
337 cmd.sta_id = mvmsta->sta_id;
338 cmd.add_modify = STA_MODE_MODIFY;
339 cmd.modify_mask = STA_MODIFY_QUEUES;
340 if (disable_agg_tids)
341 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
343 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
344 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
345 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
349 /* Notify FW of queue removal from the STA queues */
350 status = ADD_STA_SUCCESS;
351 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
352 iwl_mvm_add_sta_cmd_size(mvm),
358 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
360 struct ieee80211_sta *sta;
361 struct iwl_mvm_sta *mvmsta;
362 unsigned long tid_bitmap;
363 unsigned long agg_tids = 0;
367 lockdep_assert_held(&mvm->mutex);
369 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
372 spin_lock_bh(&mvm->queue_info_lock);
373 sta_id = mvm->queue_info[queue].ra_sta_id;
374 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
375 spin_unlock_bh(&mvm->queue_info_lock);
377 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
378 lockdep_is_held(&mvm->mutex));
380 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
383 mvmsta = iwl_mvm_sta_from_mac80211(sta);
385 spin_lock_bh(&mvmsta->lock);
386 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
387 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
388 agg_tids |= BIT(tid);
390 spin_unlock_bh(&mvmsta->lock);
396 * Remove a queue from a station's resources.
397 * Note that this only marks as free. It DOESN'T delete a BA agreement, and
398 * doesn't disable the queue
400 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
402 struct ieee80211_sta *sta;
403 struct iwl_mvm_sta *mvmsta;
404 unsigned long tid_bitmap;
405 unsigned long disable_agg_tids = 0;
409 lockdep_assert_held(&mvm->mutex);
411 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
414 spin_lock_bh(&mvm->queue_info_lock);
415 sta_id = mvm->queue_info[queue].ra_sta_id;
416 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
417 spin_unlock_bh(&mvm->queue_info_lock);
421 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
423 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
428 mvmsta = iwl_mvm_sta_from_mac80211(sta);
430 spin_lock_bh(&mvmsta->lock);
431 /* Unmap MAC queues and TIDs from this queue */
432 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
433 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
434 disable_agg_tids |= BIT(tid);
435 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
438 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
439 spin_unlock_bh(&mvmsta->lock);
443 return disable_agg_tids;
446 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,
449 struct iwl_mvm_sta *mvmsta;
450 u8 txq_curr_ac, sta_id, tid;
451 unsigned long disable_agg_tids = 0;
454 lockdep_assert_held(&mvm->mutex);
456 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
459 spin_lock_bh(&mvm->queue_info_lock);
460 txq_curr_ac = mvm->queue_info[queue].mac80211_ac;
461 sta_id = mvm->queue_info[queue].ra_sta_id;
462 tid = mvm->queue_info[queue].txq_tid;
463 spin_unlock_bh(&mvm->queue_info_lock);
465 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
466 if (WARN_ON(!mvmsta))
469 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
470 /* Disable the queue */
471 if (disable_agg_tids)
472 iwl_mvm_invalidate_sta_queue(mvm, queue,
473 disable_agg_tids, false);
475 ret = iwl_mvm_disable_txq(mvm, queue,
476 mvmsta->vif->hw_queue[txq_curr_ac],
479 /* Re-mark the inactive queue as inactive */
480 spin_lock_bh(&mvm->queue_info_lock);
481 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
482 spin_unlock_bh(&mvm->queue_info_lock);
484 "Failed to free inactive queue %d (ret=%d)\n",
490 /* If TXQ is allocated to another STA, update removal in FW */
492 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
497 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
498 unsigned long tfd_queue_mask, u8 ac)
501 u8 ac_to_queue[IEEE80211_NUM_ACS];
504 lockdep_assert_held(&mvm->queue_info_lock);
505 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
508 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
510 /* See what ACs the existing queues for this STA have */
511 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
512 /* Only DATA queues can be shared */
513 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
514 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
517 /* Don't try and take queues being reconfigured */
518 if (mvm->queue_info[queue].status ==
519 IWL_MVM_QUEUE_RECONFIGURING)
522 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
526 * The queue to share is chosen only from DATA queues as follows (in
527 * descending priority):
530 * 3. Highest AC queue that is lower than new AC
531 * 4. Any existing AC (there always is at least 1 DATA queue)
534 /* Priority 1: An AC_BE queue */
535 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
536 queue = ac_to_queue[IEEE80211_AC_BE];
537 /* Priority 2: Same AC queue */
538 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
539 queue = ac_to_queue[ac];
540 /* Priority 3a: If new AC is VO and VI exists - use VI */
541 else if (ac == IEEE80211_AC_VO &&
542 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
543 queue = ac_to_queue[IEEE80211_AC_VI];
544 /* Priority 3b: No BE so only AC less than the new one is BK */
545 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
546 queue = ac_to_queue[IEEE80211_AC_BK];
547 /* Priority 4a: No BE nor BK - use VI if exists */
548 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
549 queue = ac_to_queue[IEEE80211_AC_VI];
550 /* Priority 4b: No BE, BK nor VI - use VO if exists */
551 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
552 queue = ac_to_queue[IEEE80211_AC_VO];
554 /* Make sure queue found (or not) is legal */
555 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
556 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
557 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
558 IWL_ERR(mvm, "No DATA queues available to share\n");
562 /* Make sure the queue isn't in the middle of being reconfigured */
563 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) {
565 "TXQ %d is in the middle of re-config - try again\n",
574 * If a given queue has a higher AC than the TID stream that is being compared
575 * to, the queue needs to be redirected to the lower AC. This function does that
576 * in such a case, otherwise - if no redirection required - it does nothing,
577 * unless the %force param is true.
579 int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid,
580 int ac, int ssn, unsigned int wdg_timeout,
583 struct iwl_scd_txq_cfg_cmd cmd = {
585 .action = SCD_CFG_DISABLE_QUEUE,
591 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
595 * If the AC is lower than current one - FIFO needs to be redirected to
596 * the lowest one of the streams in the queue. Check if this is needed
598 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
599 * value 3 and VO with value 0, so to check if ac X is lower than ac Y
600 * we need to check if the numerical value of X is LARGER than of Y.
602 spin_lock_bh(&mvm->queue_info_lock);
603 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
604 spin_unlock_bh(&mvm->queue_info_lock);
606 IWL_DEBUG_TX_QUEUES(mvm,
607 "No redirection needed on TXQ #%d\n",
612 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
613 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
614 cmd.tid = mvm->queue_info[queue].txq_tid;
615 mq = mvm->hw_queue_to_mac80211[queue];
616 shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1);
617 spin_unlock_bh(&mvm->queue_info_lock);
619 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
620 queue, iwl_mvm_ac_to_tx_fifo[ac]);
622 /* Stop MAC queues and wait for this queue to empty */
623 iwl_mvm_stop_mac_queues(mvm, mq);
624 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));
626 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
632 /* Before redirecting the queue we need to de-activate it */
633 iwl_trans_txq_disable(mvm->trans, queue, false);
634 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
636 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
639 /* Make sure the SCD wrptr is correctly set before reconfiguring */
640 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
642 /* Update the TID "owner" of the queue */
643 spin_lock_bh(&mvm->queue_info_lock);
644 mvm->queue_info[queue].txq_tid = tid;
645 spin_unlock_bh(&mvm->queue_info_lock);
647 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
649 /* Redirect to lower AC */
650 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
651 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);
653 /* Update AC marking of the queue */
654 spin_lock_bh(&mvm->queue_info_lock);
655 mvm->queue_info[queue].mac80211_ac = ac;
656 spin_unlock_bh(&mvm->queue_info_lock);
659 * Mark queue as shared in transport if shared
660 * Note this has to be done after queue enablement because enablement
661 * can also set this value, and there is no indication there to shared
665 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
668 /* Continue using the MAC queues */
669 iwl_mvm_start_mac_queues(mvm, mq);
674 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,
675 struct ieee80211_sta *sta, u8 ac,
678 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
679 unsigned int wdg_timeout =
680 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
681 u8 mac_queue = mvmsta->vif->hw_queue[ac];
684 lockdep_assert_held(&mvm->mutex);
686 IWL_DEBUG_TX_QUEUES(mvm,
687 "Allocating queue for sta %d on tid %d\n",
688 mvmsta->sta_id, tid);
689 queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid,
694 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);
696 spin_lock_bh(&mvmsta->lock);
697 mvmsta->tid_data[tid].txq_id = queue;
698 mvmsta->tid_data[tid].is_tid_active = true;
699 spin_unlock_bh(&mvmsta->lock);
704 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
705 struct ieee80211_sta *sta, u8 ac, int tid,
706 struct ieee80211_hdr *hdr)
708 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
709 struct iwl_trans_txq_scd_cfg cfg = {
710 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),
711 .sta_id = mvmsta->sta_id,
713 .frame_limit = IWL_FRAME_LIMIT,
715 unsigned int wdg_timeout =
716 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
717 u8 mac_queue = mvmsta->vif->hw_queue[ac];
719 bool using_inactive_queue = false, same_sta = false;
720 unsigned long disable_agg_tids = 0;
721 enum iwl_mvm_agg_state queue_state;
722 bool shared_queue = false, inc_ssn;
724 unsigned long tfd_queue_mask;
727 lockdep_assert_held(&mvm->mutex);
729 if (iwl_mvm_has_new_tx_api(mvm))
730 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
732 spin_lock_bh(&mvmsta->lock);
733 tfd_queue_mask = mvmsta->tfd_queue_msk;
734 spin_unlock_bh(&mvmsta->lock);
736 spin_lock_bh(&mvm->queue_info_lock);
739 * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one
742 if (!ieee80211_is_data_qos(hdr->frame_control) ||
743 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
744 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
745 IWL_MVM_DQA_MIN_MGMT_QUEUE,
746 IWL_MVM_DQA_MAX_MGMT_QUEUE);
747 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
748 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
751 /* If no such queue is found, we'll use a DATA queue instead */
754 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
755 (mvm->queue_info[mvmsta->reserved_queue].status ==
756 IWL_MVM_QUEUE_RESERVED ||
757 mvm->queue_info[mvmsta->reserved_queue].status ==
758 IWL_MVM_QUEUE_INACTIVE)) {
759 queue = mvmsta->reserved_queue;
760 mvm->queue_info[queue].reserved = true;
761 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
765 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
766 IWL_MVM_DQA_MIN_DATA_QUEUE,
767 IWL_MVM_DQA_MAX_DATA_QUEUE);
770 * Check if this queue is already allocated but inactive.
771 * In such a case, we'll need to first free this queue before enabling
772 * it again, so we'll mark it as reserved to make sure no new traffic
776 mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) {
777 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
778 using_inactive_queue = true;
779 same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id;
780 IWL_DEBUG_TX_QUEUES(mvm,
781 "Re-assigning TXQ %d: sta_id=%d, tid=%d\n",
782 queue, mvmsta->sta_id, tid);
785 /* No free queue - we'll have to share */
787 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
790 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
795 * Mark TXQ as ready, even though it hasn't been fully configured yet,
796 * to make sure no one else takes it.
797 * This will allow avoiding re-acquiring the lock at the end of the
798 * configuration. On error we'll mark it back as free.
800 if ((queue > 0) && !shared_queue)
801 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
803 spin_unlock_bh(&mvm->queue_info_lock);
805 /* This shouldn't happen - out of queues */
806 if (WARN_ON(queue <= 0)) {
807 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
813 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
814 * but for configuring the SCD to send A-MPDUs we need to mark the queue
816 * Mark all DATA queues as allowing to be aggregated at some point
818 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
819 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
822 * If this queue was previously inactive (idle) - we need to free it
825 if (using_inactive_queue) {
826 ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta);
831 IWL_DEBUG_TX_QUEUES(mvm,
832 "Allocating %squeue #%d to sta %d on tid %d\n",
833 shared_queue ? "shared " : "", queue,
834 mvmsta->sta_id, tid);
837 /* Disable any open aggs on this queue */
838 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
840 if (disable_agg_tids) {
841 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
843 iwl_mvm_invalidate_sta_queue(mvm, queue,
844 disable_agg_tids, false);
848 ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
849 inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue,
850 ssn, &cfg, wdg_timeout);
852 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;
853 le16_add_cpu(&hdr->seq_ctrl, 0x10);
857 * Mark queue as shared in transport if shared
858 * Note this has to be done after queue enablement because enablement
859 * can also set this value, and there is no indication there to shared
863 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
865 spin_lock_bh(&mvmsta->lock);
867 * This looks racy, but it is not. We have only one packet for
868 * this ra/tid in our Tx path since we stop the Qdisc when we
869 * need to allocate a new TFD queue.
872 mvmsta->tid_data[tid].seq_number += 0x10;
873 mvmsta->tid_data[tid].txq_id = queue;
874 mvmsta->tid_data[tid].is_tid_active = true;
875 mvmsta->tfd_queue_msk |= BIT(queue);
876 queue_state = mvmsta->tid_data[tid].state;
878 if (mvmsta->reserved_queue == queue)
879 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
880 spin_unlock_bh(&mvmsta->lock);
883 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
887 /* If we need to re-enable aggregations... */
888 if (queue_state == IWL_AGG_ON) {
889 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
894 /* Redirect queue, if needed */
895 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn,
904 iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0);
909 static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue)
911 struct iwl_scd_txq_cfg_cmd cmd = {
913 .action = SCD_CFG_UPDATE_QUEUE_TID,
916 unsigned long tid_bitmap;
919 lockdep_assert_held(&mvm->mutex);
921 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
924 spin_lock_bh(&mvm->queue_info_lock);
925 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
926 spin_unlock_bh(&mvm->queue_info_lock);
928 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
931 /* Find any TID for queue */
932 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
934 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
936 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
938 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
943 spin_lock_bh(&mvm->queue_info_lock);
944 mvm->queue_info[queue].txq_tid = tid;
945 spin_unlock_bh(&mvm->queue_info_lock);
946 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
950 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
952 struct ieee80211_sta *sta;
953 struct iwl_mvm_sta *mvmsta;
956 unsigned long tid_bitmap;
957 unsigned int wdg_timeout;
961 /* queue sharing is disabled on new TX path */
962 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
965 lockdep_assert_held(&mvm->mutex);
967 spin_lock_bh(&mvm->queue_info_lock);
968 sta_id = mvm->queue_info[queue].ra_sta_id;
969 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
970 spin_unlock_bh(&mvm->queue_info_lock);
972 /* Find TID for queue, and make sure it is the only one on the queue */
973 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
974 if (tid_bitmap != BIT(tid)) {
975 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
980 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
983 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
984 lockdep_is_held(&mvm->mutex));
986 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
989 mvmsta = iwl_mvm_sta_from_mac80211(sta);
990 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
992 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
994 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid,
995 tid_to_mac80211_ac[tid], ssn,
998 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
1002 /* If aggs should be turned back on - do it */
1003 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
1004 struct iwl_mvm_add_sta_cmd cmd = {0};
1006 mvmsta->tid_disable_agg &= ~BIT(tid);
1008 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1009 cmd.sta_id = mvmsta->sta_id;
1010 cmd.add_modify = STA_MODE_MODIFY;
1011 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1012 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
1013 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
1015 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1016 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
1018 IWL_DEBUG_TX_QUEUES(mvm,
1019 "TXQ #%d is now aggregated again\n",
1022 /* Mark queue intenally as aggregating again */
1023 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
1027 spin_lock_bh(&mvm->queue_info_lock);
1028 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
1029 spin_unlock_bh(&mvm->queue_info_lock);
1032 static inline u8 iwl_mvm_tid_to_ac_queue(int tid)
1034 if (tid == IWL_MAX_TID_COUNT)
1035 return IEEE80211_AC_VO; /* MGMT */
1037 return tid_to_mac80211_ac[tid];
1040 static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm,
1041 struct ieee80211_sta *sta, int tid)
1043 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1044 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1045 struct sk_buff *skb;
1046 struct ieee80211_hdr *hdr;
1047 struct sk_buff_head deferred_tx;
1049 bool no_queue = false; /* Marks if there is a problem with the queue */
1052 lockdep_assert_held(&mvm->mutex);
1054 skb = skb_peek(&tid_data->deferred_tx_frames);
1057 hdr = (void *)skb->data;
1059 ac = iwl_mvm_tid_to_ac_queue(tid);
1060 mac_queue = IEEE80211_SKB_CB(skb)->hw_queue;
1062 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE &&
1063 iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) {
1065 "Can't alloc TXQ for sta %d tid %d - dropping frame\n",
1066 mvmsta->sta_id, tid);
1069 * Mark queue as problematic so later the deferred traffic is
1070 * freed, as we can do nothing with it
1075 __skb_queue_head_init(&deferred_tx);
1077 /* Disable bottom-halves when entering TX path */
1079 spin_lock(&mvmsta->lock);
1080 skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx);
1081 mvmsta->deferred_traffic_tid_map &= ~BIT(tid);
1082 spin_unlock(&mvmsta->lock);
1084 while ((skb = __skb_dequeue(&deferred_tx)))
1085 if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta))
1086 ieee80211_free_txskb(mvm->hw, skb);
1090 iwl_mvm_start_mac_queues(mvm, BIT(mac_queue));
1093 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1095 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1097 struct ieee80211_sta *sta;
1098 struct iwl_mvm_sta *mvmsta;
1099 unsigned long deferred_tid_traffic;
1100 int queue, sta_id, tid;
1102 /* Check inactivity of queues */
1103 iwl_mvm_inactivity_check(mvm);
1105 mutex_lock(&mvm->mutex);
1107 /* No queue reconfiguration in TVQM mode */
1108 if (iwl_mvm_has_new_tx_api(mvm))
1111 /* Reconfigure queues requiring reconfiguation */
1112 for (queue = 0; queue < ARRAY_SIZE(mvm->queue_info); queue++) {
1116 spin_lock_bh(&mvm->queue_info_lock);
1117 reconfig = (mvm->queue_info[queue].status ==
1118 IWL_MVM_QUEUE_RECONFIGURING);
1121 * We need to take into account a situation in which a TXQ was
1122 * allocated to TID x, and then turned shared by adding TIDs y
1123 * and z. If TID x becomes inactive and is removed from the TXQ,
1124 * ownership must be given to one of the remaining TIDs.
1125 * This is mainly because if TID x continues - a new queue can't
1126 * be allocated for it as long as it is an owner of another TXQ.
1128 change_owner = !(mvm->queue_info[queue].tid_bitmap &
1129 BIT(mvm->queue_info[queue].txq_tid)) &&
1130 (mvm->queue_info[queue].status ==
1131 IWL_MVM_QUEUE_SHARED);
1132 spin_unlock_bh(&mvm->queue_info_lock);
1135 iwl_mvm_unshare_queue(mvm, queue);
1136 else if (change_owner)
1137 iwl_mvm_change_queue_owner(mvm, queue);
1141 /* Go over all stations with deferred traffic */
1142 for_each_set_bit(sta_id, mvm->sta_deferred_frames,
1143 IWL_MVM_STATION_COUNT) {
1144 clear_bit(sta_id, mvm->sta_deferred_frames);
1145 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1146 lockdep_is_held(&mvm->mutex));
1147 if (IS_ERR_OR_NULL(sta))
1150 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1151 deferred_tid_traffic = mvmsta->deferred_traffic_tid_map;
1153 for_each_set_bit(tid, &deferred_tid_traffic,
1154 IWL_MAX_TID_COUNT + 1)
1155 iwl_mvm_tx_deferred_stream(mvm, sta, tid);
1158 mutex_unlock(&mvm->mutex);
1161 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1162 struct ieee80211_sta *sta,
1163 enum nl80211_iftype vif_type)
1165 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1167 bool using_inactive_queue = false, same_sta = false;
1169 /* queue reserving is disabled on new TX path */
1170 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1174 * Check for inactive queues, so we don't reach a situation where we
1175 * can't add a STA due to a shortage in queues that doesn't really exist
1177 iwl_mvm_inactivity_check(mvm);
1179 spin_lock_bh(&mvm->queue_info_lock);
1181 /* Make sure we have free resources for this STA */
1182 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1183 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount &&
1184 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1185 IWL_MVM_QUEUE_FREE))
1186 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1188 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
1189 IWL_MVM_DQA_MIN_DATA_QUEUE,
1190 IWL_MVM_DQA_MAX_DATA_QUEUE);
1192 spin_unlock_bh(&mvm->queue_info_lock);
1193 IWL_ERR(mvm, "No available queues for new station\n");
1195 } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) {
1197 * If this queue is already allocated but inactive we'll need to
1198 * first free this queue before enabling it again, we'll mark
1199 * it as reserved to make sure no new traffic arrives on it
1201 using_inactive_queue = true;
1202 same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id;
1204 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1206 spin_unlock_bh(&mvm->queue_info_lock);
1208 mvmsta->reserved_queue = queue;
1210 if (using_inactive_queue)
1211 iwl_mvm_free_inactive_queue(mvm, queue, same_sta);
1213 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1214 queue, mvmsta->sta_id);
1220 * In DQA mode, after a HW restart the queues should be allocated as before, in
1221 * order to avoid race conditions when there are shared queues. This function
1222 * does the re-mapping and queue allocation.
1224 * Note that re-enabling aggregations isn't done in this function.
1226 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1227 struct iwl_mvm_sta *mvm_sta)
1229 unsigned int wdg_timeout =
1230 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1232 struct iwl_trans_txq_scd_cfg cfg = {
1233 .sta_id = mvm_sta->sta_id,
1234 .frame_limit = IWL_FRAME_LIMIT,
1237 /* Make sure reserved queue is still marked as such (if allocated) */
1238 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1239 mvm->queue_info[mvm_sta->reserved_queue].status =
1240 IWL_MVM_QUEUE_RESERVED;
1242 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1243 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1244 int txq_id = tid_data->txq_id;
1248 if (txq_id == IWL_MVM_INVALID_QUEUE)
1251 skb_queue_head_init(&tid_data->deferred_tx_frames);
1253 ac = tid_to_mac80211_ac[i];
1254 mac_queue = mvm_sta->vif->hw_queue[ac];
1256 if (iwl_mvm_has_new_tx_api(mvm)) {
1257 IWL_DEBUG_TX_QUEUES(mvm,
1258 "Re-mapping sta %d tid %d\n",
1259 mvm_sta->sta_id, i);
1260 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue,
1263 tid_data->txq_id = txq_id;
1266 * Since we don't set the seq number after reset, and HW
1267 * sets it now, FW reset will cause the seq num to start
1268 * at 0 again, so driver will need to update it
1269 * internally as well, so it keeps in sync with real val
1271 tid_data->seq_number = 0;
1273 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1276 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
1277 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1279 IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1281 IWL_DEBUG_TX_QUEUES(mvm,
1282 "Re-mapping sta %d tid %d to queue %d\n",
1283 mvm_sta->sta_id, i, txq_id);
1285 iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg,
1287 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1292 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1293 struct iwl_mvm_int_sta *sta,
1295 u16 mac_id, u16 color)
1297 struct iwl_mvm_add_sta_cmd cmd;
1299 u32 status = ADD_STA_SUCCESS;
1301 lockdep_assert_held(&mvm->mutex);
1303 memset(&cmd, 0, sizeof(cmd));
1304 cmd.sta_id = sta->sta_id;
1305 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1307 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
1308 cmd.station_type = sta->type;
1310 if (!iwl_mvm_has_new_tx_api(mvm))
1311 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1312 cmd.tid_disable_tx = cpu_to_le16(0xffff);
1315 memcpy(cmd.addr, addr, ETH_ALEN);
1317 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1318 iwl_mvm_add_sta_cmd_size(mvm),
1323 switch (status & IWL_ADD_STA_STATUS_MASK) {
1324 case ADD_STA_SUCCESS:
1325 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1329 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1336 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1337 struct ieee80211_vif *vif,
1338 struct ieee80211_sta *sta)
1340 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1341 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1342 struct iwl_mvm_rxq_dup_data *dup_data;
1344 bool sta_update = false;
1345 unsigned int sta_flags = 0;
1347 lockdep_assert_held(&mvm->mutex);
1349 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1350 sta_id = iwl_mvm_find_free_sta_id(mvm,
1351 ieee80211_vif_type_p2p(vif));
1353 sta_id = mvm_sta->sta_id;
1355 if (sta_id == IWL_MVM_INVALID_STA)
1358 spin_lock_init(&mvm_sta->lock);
1360 /* if this is a HW restart re-alloc existing queues */
1361 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1362 struct iwl_mvm_int_sta tmp_sta = {
1364 .type = mvm_sta->sta_type,
1368 * First add an empty station since allocating
1369 * a queue requires a valid station
1371 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,
1372 mvmvif->id, mvmvif->color);
1376 iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta);
1378 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;
1382 mvm_sta->sta_id = sta_id;
1383 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1386 if (!mvm->trans->cfg->gen2)
1387 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1389 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;
1390 mvm_sta->tx_protection = 0;
1391 mvm_sta->tt_tx_protection = false;
1392 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK;
1394 /* HW restart, don't assume the memory has been zeroed */
1395 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1396 mvm_sta->tfd_queue_msk = 0;
1398 /* for HW restart - reset everything but the sequence number */
1399 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1400 u16 seq = mvm_sta->tid_data[i].seq_number;
1401 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
1402 mvm_sta->tid_data[i].seq_number = seq;
1405 * Mark all queues for this STA as unallocated and defer TX
1406 * frames until the queue is allocated
1408 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1409 skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames);
1411 mvm_sta->deferred_traffic_tid_map = 0;
1412 mvm_sta->agg_tids = 0;
1414 if (iwl_mvm_has_new_rx_api(mvm) &&
1415 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1418 dup_data = kcalloc(mvm->trans->num_rx_queues,
1419 sizeof(*dup_data), GFP_KERNEL);
1423 * Initialize all the last_seq values to 0xffff which can never
1424 * compare equal to the frame's seq_ctrl in the check in
1425 * iwl_mvm_is_dup() since the lower 4 bits are the fragment
1426 * number and fragmented packets don't reach that function.
1428 * This thus allows receiving a packet with seqno 0 and the
1429 * retry bit set as the very first packet on a new TID.
1431 for (q = 0; q < mvm->trans->num_rx_queues; q++)
1432 memset(dup_data[q].last_seq, 0xff,
1433 sizeof(dup_data[q].last_seq));
1434 mvm_sta->dup_data = dup_data;
1437 if (!iwl_mvm_has_new_tx_api(mvm)) {
1438 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1439 ieee80211_vif_type_p2p(vif));
1445 * if rs is registered with mac80211, then "add station" will be handled
1446 * via the corresponding ops, otherwise need to notify rate scaling here
1448 if (iwl_mvm_has_tlc_offload(mvm))
1449 iwl_mvm_rs_add_sta(mvm, mvm_sta);
1452 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);
1456 if (vif->type == NL80211_IFTYPE_STATION) {
1458 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA);
1459 mvmvif->ap_sta_id = sta_id;
1461 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA);
1465 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1473 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1476 struct iwl_mvm_add_sta_cmd cmd = {};
1480 lockdep_assert_held(&mvm->mutex);
1482 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1483 cmd.sta_id = mvmsta->sta_id;
1484 cmd.add_modify = STA_MODE_MODIFY;
1485 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1486 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1488 status = ADD_STA_SUCCESS;
1489 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1490 iwl_mvm_add_sta_cmd_size(mvm),
1495 switch (status & IWL_ADD_STA_STATUS_MASK) {
1496 case ADD_STA_SUCCESS:
1497 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
1502 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1511 * Remove a station from the FW table. Before sending the command to remove
1512 * the station validate that the station is indeed known to the driver (sanity
1515 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1517 struct ieee80211_sta *sta;
1518 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1523 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1524 lockdep_is_held(&mvm->mutex));
1526 /* Note: internal stations are marked as error values */
1528 IWL_ERR(mvm, "Invalid station id\n");
1532 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1533 sizeof(rm_sta_cmd), &rm_sta_cmd);
1535 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1542 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1543 struct ieee80211_vif *vif,
1544 struct iwl_mvm_sta *mvm_sta)
1549 lockdep_assert_held(&mvm->mutex);
1551 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1552 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
1555 ac = iwl_mvm_tid_to_ac_queue(i);
1556 iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id,
1557 vif->hw_queue[ac], i, 0);
1558 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
1562 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,
1563 struct iwl_mvm_sta *mvm_sta)
1567 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1571 spin_lock_bh(&mvm_sta->lock);
1572 txq_id = mvm_sta->tid_data[i].txq_id;
1573 spin_unlock_bh(&mvm_sta->lock);
1575 if (txq_id == IWL_MVM_INVALID_QUEUE)
1578 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);
1586 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
1587 struct ieee80211_vif *vif,
1588 struct ieee80211_sta *sta)
1590 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1591 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1592 u8 sta_id = mvm_sta->sta_id;
1595 lockdep_assert_held(&mvm->mutex);
1597 if (iwl_mvm_has_new_rx_api(mvm))
1598 kfree(mvm_sta->dup_data);
1600 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
1604 /* flush its queues here since we are freeing mvm_sta */
1605 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0);
1608 if (iwl_mvm_has_new_tx_api(mvm)) {
1609 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
1611 u32 q_mask = mvm_sta->tfd_queue_msk;
1613 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
1619 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
1621 iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta);
1623 /* If there is a TXQ still marked as reserved - free it */
1624 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {
1625 u8 reserved_txq = mvm_sta->reserved_queue;
1626 enum iwl_mvm_queue_status *status;
1629 * If no traffic has gone through the reserved TXQ - it
1630 * is still marked as IWL_MVM_QUEUE_RESERVED, and
1631 * should be manually marked as free again
1633 spin_lock_bh(&mvm->queue_info_lock);
1634 status = &mvm->queue_info[reserved_txq].status;
1635 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
1636 (*status != IWL_MVM_QUEUE_FREE),
1637 "sta_id %d reserved txq %d status %d",
1638 sta_id, reserved_txq, *status)) {
1639 spin_unlock_bh(&mvm->queue_info_lock);
1643 *status = IWL_MVM_QUEUE_FREE;
1644 spin_unlock_bh(&mvm->queue_info_lock);
1647 if (vif->type == NL80211_IFTYPE_STATION &&
1648 mvmvif->ap_sta_id == sta_id) {
1649 /* if associated - we can't remove the AP STA now */
1650 if (vif->bss_conf.assoc)
1653 /* unassoc - go ahead - remove the AP STA now */
1654 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1656 /* clear d0i3_ap_sta_id if no longer relevant */
1657 if (mvm->d0i3_ap_sta_id == sta_id)
1658 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1662 * This shouldn't happen - the TDLS channel switch should be canceled
1663 * before the STA is removed.
1665 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
1666 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;
1667 cancel_delayed_work(&mvm->tdls_cs.dwork);
1671 * Make sure that the tx response code sees the station as -EBUSY and
1672 * calls the drain worker.
1674 spin_lock_bh(&mvm_sta->lock);
1675 spin_unlock_bh(&mvm_sta->lock);
1677 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
1678 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
1683 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
1684 struct ieee80211_vif *vif,
1687 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1689 lockdep_assert_held(&mvm->mutex);
1691 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
1695 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
1696 struct iwl_mvm_int_sta *sta,
1697 u32 qmask, enum nl80211_iftype iftype,
1698 enum iwl_sta_type type)
1700 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1701 sta->sta_id == IWL_MVM_INVALID_STA) {
1702 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
1703 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
1707 sta->tfd_queue_msk = qmask;
1710 /* put a non-NULL value so iterating over the stations won't stop */
1711 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
1715 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
1717 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
1718 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
1719 sta->sta_id = IWL_MVM_INVALID_STA;
1722 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue,
1725 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
1726 mvm->cfg->base_params->wd_timeout :
1727 IWL_WATCHDOG_DISABLED;
1729 if (iwl_mvm_has_new_tx_api(mvm)) {
1731 iwl_mvm_tvqm_enable_txq(mvm, *queue, sta_id,
1734 *queue = tvqm_queue;
1736 struct iwl_trans_txq_scd_cfg cfg = {
1739 .tid = IWL_MAX_TID_COUNT,
1741 .frame_limit = IWL_FRAME_LIMIT,
1744 iwl_mvm_enable_txq(mvm, *queue, *queue, 0, &cfg, wdg_timeout);
1748 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
1752 lockdep_assert_held(&mvm->mutex);
1754 /* Allocate aux station and assign to it the aux queue */
1755 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
1756 NL80211_IFTYPE_UNSPECIFIED,
1757 IWL_STA_AUX_ACTIVITY);
1761 /* Map Aux queue to fifo - needs to happen before adding Aux station */
1762 if (!iwl_mvm_has_new_tx_api(mvm))
1763 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue,
1764 mvm->aux_sta.sta_id,
1765 IWL_MVM_TX_FIFO_MCAST);
1767 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
1770 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1775 * For 22000 firmware and on we cannot add queue to a station unknown
1776 * to firmware so enable queue here - after the station was added
1778 if (iwl_mvm_has_new_tx_api(mvm))
1779 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue,
1780 mvm->aux_sta.sta_id,
1781 IWL_MVM_TX_FIFO_MCAST);
1786 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1788 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1791 lockdep_assert_held(&mvm->mutex);
1793 /* Map snif queue to fifo - must happen before adding snif station */
1794 if (!iwl_mvm_has_new_tx_api(mvm))
1795 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue,
1796 mvm->snif_sta.sta_id,
1797 IWL_MVM_TX_FIFO_BE);
1799 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr,
1805 * For 22000 firmware and on we cannot add queue to a station unknown
1806 * to firmware so enable queue here - after the station was added
1808 if (iwl_mvm_has_new_tx_api(mvm))
1809 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue,
1810 mvm->snif_sta.sta_id,
1811 IWL_MVM_TX_FIFO_BE);
1816 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1820 lockdep_assert_held(&mvm->mutex);
1822 iwl_mvm_disable_txq(mvm, mvm->snif_queue, mvm->snif_queue,
1823 IWL_MAX_TID_COUNT, 0);
1824 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
1826 IWL_WARN(mvm, "Failed sending remove station\n");
1831 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
1833 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
1836 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
1838 lockdep_assert_held(&mvm->mutex);
1840 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1844 * Send the add station command for the vif's broadcast station.
1845 * Assumes that the station was already allocated.
1847 * @mvm: the mvm component
1848 * @vif: the interface to which the broadcast station is added
1849 * @bsta: the broadcast station to add.
1851 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1853 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1854 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
1855 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1856 const u8 *baddr = _baddr;
1859 unsigned int wdg_timeout =
1860 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
1861 struct iwl_trans_txq_scd_cfg cfg = {
1862 .fifo = IWL_MVM_TX_FIFO_VO,
1863 .sta_id = mvmvif->bcast_sta.sta_id,
1864 .tid = IWL_MAX_TID_COUNT,
1866 .frame_limit = IWL_FRAME_LIMIT,
1869 lockdep_assert_held(&mvm->mutex);
1871 if (!iwl_mvm_has_new_tx_api(mvm)) {
1872 if (vif->type == NL80211_IFTYPE_AP ||
1873 vif->type == NL80211_IFTYPE_ADHOC)
1874 queue = mvm->probe_queue;
1875 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
1876 queue = mvm->p2p_dev_queue;
1877 else if (WARN(1, "Missing required TXQ for adding bcast STA\n"))
1880 bsta->tfd_queue_msk |= BIT(queue);
1882 iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0,
1886 if (vif->type == NL80211_IFTYPE_ADHOC)
1887 baddr = vif->bss_conf.bssid;
1889 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))
1892 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
1893 mvmvif->id, mvmvif->color);
1898 * For 22000 firmware and on we cannot add queue to a station unknown
1899 * to firmware so enable queue here - after the station was added
1901 if (iwl_mvm_has_new_tx_api(mvm)) {
1902 queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0],
1907 if (vif->type == NL80211_IFTYPE_AP ||
1908 vif->type == NL80211_IFTYPE_ADHOC)
1909 mvm->probe_queue = queue;
1910 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
1911 mvm->p2p_dev_queue = queue;
1917 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,
1918 struct ieee80211_vif *vif)
1920 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1923 lockdep_assert_held(&mvm->mutex);
1925 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0);
1927 switch (vif->type) {
1928 case NL80211_IFTYPE_AP:
1929 case NL80211_IFTYPE_ADHOC:
1930 queue = mvm->probe_queue;
1932 case NL80211_IFTYPE_P2P_DEVICE:
1933 queue = mvm->p2p_dev_queue;
1936 WARN(1, "Can't free bcast queue on vif type %d\n",
1941 iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0);
1942 if (iwl_mvm_has_new_tx_api(mvm))
1945 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue)));
1946 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue);
1949 /* Send the FW a request to remove the station from it's internal data
1950 * structures, but DO NOT remove the entry from the local data structures. */
1951 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1953 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1956 lockdep_assert_held(&mvm->mutex);
1958 iwl_mvm_free_bcast_sta_queues(mvm, vif);
1960 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
1962 IWL_WARN(mvm, "Failed sending remove station\n");
1966 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1968 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1970 lockdep_assert_held(&mvm->mutex);
1972 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0,
1973 ieee80211_vif_type_p2p(vif),
1974 IWL_STA_GENERAL_PURPOSE);
1977 /* Allocate a new station entry for the broadcast station to the given vif,
1978 * and send it to the FW.
1979 * Note that each P2P mac should have its own broadcast station.
1981 * @mvm: the mvm component
1982 * @vif: the interface to which the broadcast station is added
1983 * @bsta: the broadcast station to add. */
1984 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1986 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1987 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
1990 lockdep_assert_held(&mvm->mutex);
1992 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1996 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1999 iwl_mvm_dealloc_int_sta(mvm, bsta);
2004 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2006 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2008 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
2012 * Send the FW a request to remove the station from it's internal data
2013 * structures, and in addition remove it from the local data structure.
2015 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2019 lockdep_assert_held(&mvm->mutex);
2021 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
2023 iwl_mvm_dealloc_bcast_sta(mvm, vif);
2029 * Allocate a new station entry for the multicast station to the given vif,
2030 * and send it to the FW.
2031 * Note that each AP/GO mac should have its own multicast station.
2033 * @mvm: the mvm component
2034 * @vif: the interface to which the multicast station is added
2036 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2038 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2039 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta;
2040 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
2041 const u8 *maddr = _maddr;
2042 struct iwl_trans_txq_scd_cfg cfg = {
2043 .fifo = IWL_MVM_TX_FIFO_MCAST,
2044 .sta_id = msta->sta_id,
2047 .frame_limit = IWL_FRAME_LIMIT,
2049 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
2052 lockdep_assert_held(&mvm->mutex);
2054 if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
2055 vif->type != NL80211_IFTYPE_ADHOC))
2059 * In IBSS, ieee80211_check_queues() sets the cab_queue to be
2060 * invalid, so make sure we use the queue we want.
2061 * Note that this is done here as we want to avoid making DQA
2062 * changes in mac80211 layer.
2064 if (vif->type == NL80211_IFTYPE_ADHOC) {
2065 vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
2066 mvmvif->cab_queue = vif->cab_queue;
2070 * While in previous FWs we had to exclude cab queue from TFD queue
2071 * mask, now it is needed as any other queue.
2073 if (!iwl_mvm_has_new_tx_api(mvm) &&
2074 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2075 iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0,
2077 msta->tfd_queue_msk |= BIT(vif->cab_queue);
2079 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
2080 mvmvif->id, mvmvif->color);
2082 iwl_mvm_dealloc_int_sta(mvm, msta);
2087 * Enable cab queue after the ADD_STA command is sent.
2088 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG
2089 * command with unknown station id, and for FW that doesn't support
2090 * station API since the cab queue is not included in the
2093 if (iwl_mvm_has_new_tx_api(mvm)) {
2094 int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue,
2098 mvmvif->cab_queue = queue;
2099 } else if (!fw_has_api(&mvm->fw->ucode_capa,
2100 IWL_UCODE_TLV_API_STA_TYPE))
2101 iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0,
2108 * Send the FW a request to remove the station from it's internal data
2109 * structures, and in addition remove it from the local data structure.
2111 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
2113 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2116 lockdep_assert_held(&mvm->mutex);
2118 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0);
2120 iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue,
2123 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id);
2125 IWL_WARN(mvm, "Failed sending remove station\n");
2130 #define IWL_MAX_RX_BA_SESSIONS 16
2132 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
2134 struct iwl_mvm_delba_notif notif = {
2135 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA,
2139 iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif));
2142 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
2143 struct iwl_mvm_baid_data *data)
2147 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
2149 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2151 struct iwl_mvm_reorder_buffer *reorder_buf =
2152 &data->reorder_buf[i];
2153 struct iwl_mvm_reorder_buf_entry *entries =
2154 &data->entries[i * data->entries_per_queue];
2156 spin_lock_bh(&reorder_buf->lock);
2157 if (likely(!reorder_buf->num_stored)) {
2158 spin_unlock_bh(&reorder_buf->lock);
2163 * This shouldn't happen in regular DELBA since the internal
2164 * delBA notification should trigger a release of all frames in
2165 * the reorder buffer.
2169 for (j = 0; j < reorder_buf->buf_size; j++)
2170 __skb_queue_purge(&entries[j].e.frames);
2172 * Prevent timer re-arm. This prevents a very far fetched case
2173 * where we timed out on the notification. There may be prior
2174 * RX frames pending in the RX queue before the notification
2175 * that might get processed between now and the actual deletion
2176 * and we would re-arm the timer although we are deleting the
2179 reorder_buf->removed = true;
2180 spin_unlock_bh(&reorder_buf->lock);
2181 del_timer_sync(&reorder_buf->reorder_timer);
2185 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
2186 struct iwl_mvm_baid_data *data,
2187 u16 ssn, u8 buf_size)
2191 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
2192 struct iwl_mvm_reorder_buffer *reorder_buf =
2193 &data->reorder_buf[i];
2194 struct iwl_mvm_reorder_buf_entry *entries =
2195 &data->entries[i * data->entries_per_queue];
2198 reorder_buf->num_stored = 0;
2199 reorder_buf->head_sn = ssn;
2200 reorder_buf->buf_size = buf_size;
2201 /* rx reorder timer */
2202 timer_setup(&reorder_buf->reorder_timer,
2203 iwl_mvm_reorder_timer_expired, 0);
2204 spin_lock_init(&reorder_buf->lock);
2205 reorder_buf->mvm = mvm;
2206 reorder_buf->queue = i;
2207 reorder_buf->valid = false;
2208 for (j = 0; j < reorder_buf->buf_size; j++)
2209 __skb_queue_head_init(&entries[j].e.frames);
2213 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2214 int tid, u16 ssn, bool start, u8 buf_size, u16 timeout)
2216 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2217 struct iwl_mvm_add_sta_cmd cmd = {};
2218 struct iwl_mvm_baid_data *baid_data = NULL;
2222 lockdep_assert_held(&mvm->mutex);
2224 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
2225 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
2229 if (iwl_mvm_has_new_rx_api(mvm) && start) {
2230 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);
2232 /* sparse doesn't like the __align() so don't check */
2235 * The division below will be OK if either the cache line size
2236 * can be divided by the entry size (ALIGN will round up) or if
2237 * if the entry size can be divided by the cache line size, in
2238 * which case the ALIGN() will do nothing.
2240 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&
2241 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);
2245 * Upward align the reorder buffer size to fill an entire cache
2246 * line for each queue, to avoid sharing cache lines between
2249 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);
2252 * Allocate here so if allocation fails we can bail out early
2253 * before starting the BA session in the firmware
2255 baid_data = kzalloc(sizeof(*baid_data) +
2256 mvm->trans->num_rx_queues *
2263 * This division is why we need the above BUILD_BUG_ON(),
2264 * if that doesn't hold then this will not be right.
2266 baid_data->entries_per_queue =
2267 reorder_buf_size / sizeof(baid_data->entries[0]);
2270 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
2271 cmd.sta_id = mvm_sta->sta_id;
2272 cmd.add_modify = STA_MODE_MODIFY;
2274 cmd.add_immediate_ba_tid = (u8) tid;
2275 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2276 cmd.rx_ba_window = cpu_to_le16((u16)buf_size);
2278 cmd.remove_immediate_ba_tid = (u8) tid;
2280 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
2281 STA_MODIFY_REMOVE_BA_TID;
2283 status = ADD_STA_SUCCESS;
2284 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2285 iwl_mvm_add_sta_cmd_size(mvm),
2290 switch (status & IWL_ADD_STA_STATUS_MASK) {
2291 case ADD_STA_SUCCESS:
2292 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2293 start ? "start" : "stopp");
2295 case ADD_STA_IMMEDIATE_BA_FAILURE:
2296 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2301 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2302 start ? "start" : "stopp", status);
2312 mvm->rx_ba_sessions++;
2314 if (!iwl_mvm_has_new_rx_api(mvm))
2317 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) {
2321 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >>
2322 IWL_ADD_STA_BAID_SHIFT);
2323 baid_data->baid = baid;
2324 baid_data->timeout = timeout;
2325 baid_data->last_rx = jiffies;
2326 baid_data->rcu_ptr = &mvm->baid_map[baid];
2327 timer_setup(&baid_data->session_timer,
2328 iwl_mvm_rx_agg_session_expired, 0);
2329 baid_data->mvm = mvm;
2330 baid_data->tid = tid;
2331 baid_data->sta_id = mvm_sta->sta_id;
2333 mvm_sta->tid_to_baid[tid] = baid;
2335 mod_timer(&baid_data->session_timer,
2336 TU_TO_EXP_TIME(timeout * 2));
2338 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size);
2340 * protect the BA data with RCU to cover a case where our
2341 * internal RX sync mechanism will timeout (not that it's
2342 * supposed to happen) and we will free the session data while
2343 * RX is being processed in parallel
2345 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2346 mvm_sta->sta_id, tid, baid);
2347 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2348 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2350 u8 baid = mvm_sta->tid_to_baid[tid];
2352 if (mvm->rx_ba_sessions > 0)
2353 /* check that restart flow didn't zero the counter */
2354 mvm->rx_ba_sessions--;
2355 if (!iwl_mvm_has_new_rx_api(mvm))
2358 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2361 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2362 if (WARN_ON(!baid_data))
2365 /* synchronize all rx queues so we can safely delete */
2366 iwl_mvm_free_reorder(mvm, baid_data);
2367 del_timer_sync(&baid_data->session_timer);
2368 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2369 kfree_rcu(baid_data, rcu_head);
2370 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
2379 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2380 int tid, u8 queue, bool start)
2382 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2383 struct iwl_mvm_add_sta_cmd cmd = {};
2387 lockdep_assert_held(&mvm->mutex);
2390 mvm_sta->tfd_queue_msk |= BIT(queue);
2391 mvm_sta->tid_disable_agg &= ~BIT(tid);
2393 /* In DQA-mode the queue isn't removed on agg termination */
2394 mvm_sta->tid_disable_agg |= BIT(tid);
2397 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
2398 cmd.sta_id = mvm_sta->sta_id;
2399 cmd.add_modify = STA_MODE_MODIFY;
2400 if (!iwl_mvm_has_new_tx_api(mvm))
2401 cmd.modify_mask = STA_MODIFY_QUEUES;
2402 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
2403 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
2404 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
2406 status = ADD_STA_SUCCESS;
2407 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2408 iwl_mvm_add_sta_cmd_size(mvm),
2413 switch (status & IWL_ADD_STA_STATUS_MASK) {
2414 case ADD_STA_SUCCESS:
2418 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
2419 start ? "start" : "stopp", status);
2426 const u8 tid_to_mac80211_ac[] = {
2435 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
2438 static const u8 tid_to_ucode_ac[] = {
2449 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2450 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2452 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2453 struct iwl_mvm_tid_data *tid_data;
2458 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
2461 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&
2462 mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
2464 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",
2465 mvmsta->tid_data[tid].state);
2469 lockdep_assert_held(&mvm->mutex);
2471 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&
2472 iwl_mvm_has_new_tx_api(mvm)) {
2473 u8 ac = tid_to_mac80211_ac[tid];
2475 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);
2480 spin_lock_bh(&mvmsta->lock);
2482 /* possible race condition - we entered D0i3 while starting agg */
2483 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
2484 spin_unlock_bh(&mvmsta->lock);
2485 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
2489 spin_lock(&mvm->queue_info_lock);
2492 * Note the possible cases:
2493 * 1. An enabled TXQ - TXQ needs to become agg'ed
2494 * 2. The TXQ hasn't yet been enabled, so find a free one and mark
2497 txq_id = mvmsta->tid_data[tid].txq_id;
2498 if (txq_id == IWL_MVM_INVALID_QUEUE) {
2499 txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
2500 IWL_MVM_DQA_MIN_DATA_QUEUE,
2501 IWL_MVM_DQA_MAX_DATA_QUEUE);
2504 IWL_ERR(mvm, "Failed to allocate agg queue\n");
2508 /* TXQ hasn't yet been enabled, so mark it only as reserved */
2509 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
2510 } else if (unlikely(mvm->queue_info[txq_id].status ==
2511 IWL_MVM_QUEUE_SHARED)) {
2513 IWL_DEBUG_TX_QUEUES(mvm,
2514 "Can't start tid %d agg on shared queue!\n",
2519 spin_unlock(&mvm->queue_info_lock);
2521 IWL_DEBUG_TX_QUEUES(mvm,
2522 "AGG for tid %d will be on queue #%d\n",
2525 tid_data = &mvmsta->tid_data[tid];
2526 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
2527 tid_data->txq_id = txq_id;
2528 *ssn = tid_data->ssn;
2530 IWL_DEBUG_TX_QUEUES(mvm,
2531 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
2532 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
2533 tid_data->next_reclaimed);
2536 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
2537 * to align the wrap around of ssn so we compare relevant values.
2539 normalized_ssn = tid_data->ssn;
2540 if (mvm->trans->cfg->gen2)
2541 normalized_ssn &= 0xff;
2543 if (normalized_ssn == tid_data->next_reclaimed) {
2544 tid_data->state = IWL_AGG_STARTING;
2545 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2547 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
2554 spin_unlock(&mvm->queue_info_lock);
2556 spin_unlock_bh(&mvmsta->lock);
2561 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2562 struct ieee80211_sta *sta, u16 tid, u8 buf_size,
2565 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2566 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2567 unsigned int wdg_timeout =
2568 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
2570 bool alloc_queue = true;
2571 enum iwl_mvm_queue_status queue_status;
2574 struct iwl_trans_txq_scd_cfg cfg = {
2575 .sta_id = mvmsta->sta_id,
2577 .frame_limit = buf_size,
2582 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation
2583 * manager, so this function should never be called in this case.
2585 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))
2588 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
2589 != IWL_MAX_TID_COUNT);
2591 spin_lock_bh(&mvmsta->lock);
2592 ssn = tid_data->ssn;
2593 queue = tid_data->txq_id;
2594 tid_data->state = IWL_AGG_ON;
2595 mvmsta->agg_tids |= BIT(tid);
2596 tid_data->ssn = 0xffff;
2597 tid_data->amsdu_in_ampdu_allowed = amsdu;
2598 spin_unlock_bh(&mvmsta->lock);
2600 if (iwl_mvm_has_new_tx_api(mvm)) {
2602 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()
2603 * would have failed, so if we are here there is no need to
2605 * However, if aggregation size is different than the default
2606 * size, the scheduler should be reconfigured.
2607 * We cannot do this with the new TX API, so return unsupported
2608 * for now, until it will be offloaded to firmware..
2609 * Note that if SCD default value changes - this condition
2610 * should be updated as well.
2612 if (buf_size < IWL_FRAME_LIMIT)
2615 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
2621 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
2623 spin_lock_bh(&mvm->queue_info_lock);
2624 queue_status = mvm->queue_info[queue].status;
2625 spin_unlock_bh(&mvm->queue_info_lock);
2627 /* Maybe there is no need to even alloc a queue... */
2628 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
2629 alloc_queue = false;
2632 * Only reconfig the SCD for the queue if the window size has
2633 * changed from current (become smaller)
2635 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {
2637 * If reconfiguring an existing queue, it first must be
2640 ret = iwl_trans_wait_tx_queues_empty(mvm->trans,
2644 "Error draining queue before reconfig\n");
2648 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
2649 mvmsta->sta_id, tid,
2653 "Error reconfiguring TXQ #%d\n", queue);
2659 iwl_mvm_enable_txq(mvm, queue,
2660 vif->hw_queue[tid_to_mac80211_ac[tid]], ssn,
2663 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
2664 if (queue_status != IWL_MVM_QUEUE_SHARED) {
2665 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
2670 /* No need to mark as reserved */
2671 spin_lock_bh(&mvm->queue_info_lock);
2672 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
2673 spin_unlock_bh(&mvm->queue_info_lock);
2677 * Even though in theory the peer could have different
2678 * aggregation reorder buffer sizes for different sessions,
2679 * our ucode doesn't allow for that and has a global limit
2680 * for each station. Therefore, use the minimum of all the
2681 * aggregation sessions and our default value.
2683 mvmsta->max_agg_bufsize =
2684 min(mvmsta->max_agg_bufsize, buf_size);
2685 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
2687 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
2690 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false);
2693 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
2694 struct iwl_mvm_sta *mvmsta,
2695 struct iwl_mvm_tid_data *tid_data)
2697 u16 txq_id = tid_data->txq_id;
2699 if (iwl_mvm_has_new_tx_api(mvm))
2702 spin_lock_bh(&mvm->queue_info_lock);
2704 * The TXQ is marked as reserved only if no traffic came through yet
2705 * This means no traffic has been sent on this TID (agg'd or not), so
2706 * we no longer have use for the queue. Since it hasn't even been
2707 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2710 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
2711 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
2712 tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
2715 spin_unlock_bh(&mvm->queue_info_lock);
2718 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2719 struct ieee80211_sta *sta, u16 tid)
2721 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2722 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2727 * If mac80211 is cleaning its state, then say that we finished since
2728 * our state has been cleared anyway.
2730 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2731 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2735 spin_lock_bh(&mvmsta->lock);
2737 txq_id = tid_data->txq_id;
2739 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
2740 mvmsta->sta_id, tid, txq_id, tid_data->state);
2742 mvmsta->agg_tids &= ~BIT(tid);
2744 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
2746 switch (tid_data->state) {
2748 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
2750 IWL_DEBUG_TX_QUEUES(mvm,
2751 "ssn = %d, next_recl = %d\n",
2752 tid_data->ssn, tid_data->next_reclaimed);
2754 tid_data->ssn = 0xffff;
2755 tid_data->state = IWL_AGG_OFF;
2756 spin_unlock_bh(&mvmsta->lock);
2758 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2760 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2762 case IWL_AGG_STARTING:
2763 case IWL_EMPTYING_HW_QUEUE_ADDBA:
2765 * The agg session has been stopped before it was set up. This
2766 * can happen when the AddBA timer times out for example.
2769 /* No barriers since we are under mutex */
2770 lockdep_assert_held(&mvm->mutex);
2772 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2773 tid_data->state = IWL_AGG_OFF;
2778 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
2779 mvmsta->sta_id, tid, tid_data->state);
2781 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
2785 spin_unlock_bh(&mvmsta->lock);
2790 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2791 struct ieee80211_sta *sta, u16 tid)
2793 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2794 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2796 enum iwl_mvm_agg_state old_state;
2799 * First set the agg state to OFF to avoid calling
2800 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
2802 spin_lock_bh(&mvmsta->lock);
2803 txq_id = tid_data->txq_id;
2804 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
2805 mvmsta->sta_id, tid, txq_id, tid_data->state);
2806 old_state = tid_data->state;
2807 tid_data->state = IWL_AGG_OFF;
2808 mvmsta->agg_tids &= ~BIT(tid);
2809 spin_unlock_bh(&mvmsta->lock);
2811 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
2813 if (old_state >= IWL_AGG_ON) {
2814 iwl_mvm_drain_sta(mvm, mvmsta, true);
2816 if (iwl_mvm_has_new_tx_api(mvm)) {
2817 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id,
2819 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
2820 iwl_trans_wait_txq_empty(mvm->trans, txq_id);
2822 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0))
2823 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
2824 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));
2827 iwl_mvm_drain_sta(mvm, mvmsta, false);
2829 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2835 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
2837 int i, max = -1, max_offs = -1;
2839 lockdep_assert_held(&mvm->mutex);
2841 /* Pick the unused key offset with the highest 'deleted'
2842 * counter. Every time a key is deleted, all the counters
2843 * are incremented and the one that was just deleted is
2844 * reset to zero. Thus, the highest counter is the one
2845 * that was deleted longest ago. Pick that one.
2847 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2848 if (test_bit(i, mvm->fw_key_table))
2850 if (mvm->fw_key_deleted[i] > max) {
2851 max = mvm->fw_key_deleted[i];
2857 return STA_KEY_IDX_INVALID;
2862 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
2863 struct ieee80211_vif *vif,
2864 struct ieee80211_sta *sta)
2866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2869 return iwl_mvm_sta_from_mac80211(sta);
2872 * The device expects GTKs for station interfaces to be
2873 * installed as GTKs for the AP station. If we have no
2874 * station ID, then use AP's station ID.
2876 if (vif->type == NL80211_IFTYPE_STATION &&
2877 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2878 u8 sta_id = mvmvif->ap_sta_id;
2880 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
2881 lockdep_is_held(&mvm->mutex));
2884 * It is possible that the 'sta' parameter is NULL,
2885 * for example when a GTK is removed - the sta_id will then
2886 * be the AP ID, and no station was passed by mac80211.
2888 if (IS_ERR_OR_NULL(sta))
2891 return iwl_mvm_sta_from_mac80211(sta);
2897 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
2899 struct ieee80211_key_conf *key, bool mcast,
2900 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
2901 u8 key_offset, bool mfp)
2904 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
2905 struct iwl_mvm_add_sta_key_cmd cmd;
2913 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
2914 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
2916 if (sta_id == IWL_MVM_INVALID_STA)
2919 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &
2920 STA_KEY_FLG_KEYID_MSK;
2921 key_flags = cpu_to_le16(keyidx);
2922 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
2924 switch (key->cipher) {
2925 case WLAN_CIPHER_SUITE_TKIP:
2926 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
2928 memcpy((void *)&u.cmd.tx_mic_key,
2929 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2932 memcpy((void *)&u.cmd.rx_mic_key,
2933 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2935 pn = atomic64_read(&key->tx_pn);
2938 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;
2939 for (i = 0; i < 5; i++)
2940 u.cmd_v1.tkip_rx_ttak[i] =
2941 cpu_to_le16(tkip_p1k[i]);
2943 memcpy(u.cmd.common.key, key->key, key->keylen);
2945 case WLAN_CIPHER_SUITE_CCMP:
2946 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
2947 memcpy(u.cmd.common.key, key->key, key->keylen);
2949 pn = atomic64_read(&key->tx_pn);
2951 case WLAN_CIPHER_SUITE_WEP104:
2952 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
2954 case WLAN_CIPHER_SUITE_WEP40:
2955 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
2956 memcpy(u.cmd.common.key + 3, key->key, key->keylen);
2958 case WLAN_CIPHER_SUITE_GCMP_256:
2959 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
2961 case WLAN_CIPHER_SUITE_GCMP:
2962 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
2963 memcpy(u.cmd.common.key, key->key, key->keylen);
2965 pn = atomic64_read(&key->tx_pn);
2968 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
2969 memcpy(u.cmd.common.key, key->key, key->keylen);
2973 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2975 key_flags |= cpu_to_le16(STA_KEY_MFP);
2977 u.cmd.common.key_offset = key_offset;
2978 u.cmd.common.key_flags = key_flags;
2979 u.cmd.common.sta_id = sta_id;
2982 u.cmd.transmit_seq_cnt = cpu_to_le64(pn);
2983 size = sizeof(u.cmd);
2985 size = sizeof(u.cmd_v1);
2988 status = ADD_STA_SUCCESS;
2989 if (cmd_flags & CMD_ASYNC)
2990 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,
2993 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,
2997 case ADD_STA_SUCCESS:
2998 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
3002 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
3009 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
3010 struct ieee80211_key_conf *keyconf,
3011 u8 sta_id, bool remove_key)
3013 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
3015 /* verify the key details match the required command's expectations */
3016 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
3017 (keyconf->keyidx != 4 && keyconf->keyidx != 5) ||
3018 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
3019 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
3020 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
3023 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
3024 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
3027 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
3028 igtk_cmd.sta_id = cpu_to_le32(sta_id);
3031 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
3033 struct ieee80211_key_seq seq;
3036 switch (keyconf->cipher) {
3037 case WLAN_CIPHER_SUITE_AES_CMAC:
3038 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
3040 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3041 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3042 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
3048 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
3049 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3050 igtk_cmd.ctrl_flags |=
3051 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
3052 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3053 pn = seq.aes_cmac.pn;
3054 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
3055 ((u64) pn[4] << 8) |
3056 ((u64) pn[3] << 16) |
3057 ((u64) pn[2] << 24) |
3058 ((u64) pn[1] << 32) |
3059 ((u64) pn[0] << 40));
3062 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
3063 remove_key ? "removing" : "installing",
3066 if (!iwl_mvm_has_new_rx_api(mvm)) {
3067 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
3068 .ctrl_flags = igtk_cmd.ctrl_flags,
3069 .key_id = igtk_cmd.key_id,
3070 .sta_id = igtk_cmd.sta_id,
3071 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
3074 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
3075 ARRAY_SIZE(igtk_cmd_v1.igtk));
3076 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3077 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
3079 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
3080 sizeof(igtk_cmd), &igtk_cmd);
3084 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
3085 struct ieee80211_vif *vif,
3086 struct ieee80211_sta *sta)
3088 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3093 if (vif->type == NL80211_IFTYPE_STATION &&
3094 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
3095 u8 sta_id = mvmvif->ap_sta_id;
3096 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
3097 lockdep_is_held(&mvm->mutex));
3105 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3106 struct ieee80211_vif *vif,
3107 struct ieee80211_sta *sta,
3108 struct ieee80211_key_conf *keyconf,
3114 struct ieee80211_key_seq seq;
3120 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3122 sta_id = mvm_sta->sta_id;
3124 } else if (vif->type == NL80211_IFTYPE_AP &&
3125 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
3126 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3128 sta_id = mvmvif->mcast_sta.sta_id;
3130 IWL_ERR(mvm, "Failed to find station id\n");
3134 switch (keyconf->cipher) {
3135 case WLAN_CIPHER_SUITE_TKIP:
3136 if (vif->type == NL80211_IFTYPE_AP) {
3140 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
3141 /* get phase 1 key from mac80211 */
3142 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
3143 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
3144 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3145 seq.tkip.iv32, p1k, 0, key_offset,
3148 case WLAN_CIPHER_SUITE_CCMP:
3149 case WLAN_CIPHER_SUITE_WEP40:
3150 case WLAN_CIPHER_SUITE_WEP104:
3151 case WLAN_CIPHER_SUITE_GCMP:
3152 case WLAN_CIPHER_SUITE_GCMP_256:
3153 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3154 0, NULL, 0, key_offset, mfp);
3157 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,
3158 0, NULL, 0, key_offset, mfp);
3164 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
3165 struct ieee80211_key_conf *keyconf,
3169 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;
3170 struct iwl_mvm_add_sta_key_cmd cmd;
3172 bool new_api = fw_has_api(&mvm->fw->ucode_capa,
3173 IWL_UCODE_TLV_API_TKIP_MIC_KEYS);
3178 /* This is a valid situation for GTK removal */
3179 if (sta_id == IWL_MVM_INVALID_STA)
3182 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
3183 STA_KEY_FLG_KEYID_MSK);
3184 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
3185 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
3188 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
3191 * The fields assigned here are in the same location at the start
3192 * of the command, so we can do this union trick.
3194 u.cmd.common.key_flags = key_flags;
3195 u.cmd.common.key_offset = keyconf->hw_key_idx;
3196 u.cmd.common.sta_id = sta_id;
3198 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);
3200 status = ADD_STA_SUCCESS;
3201 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,
3205 case ADD_STA_SUCCESS:
3206 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
3210 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
3217 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
3218 struct ieee80211_vif *vif,
3219 struct ieee80211_sta *sta,
3220 struct ieee80211_key_conf *keyconf,
3223 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3224 struct iwl_mvm_sta *mvm_sta;
3225 u8 sta_id = IWL_MVM_INVALID_STA;
3227 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
3229 lockdep_assert_held(&mvm->mutex);
3231 if (vif->type != NL80211_IFTYPE_AP ||
3232 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
3233 /* Get the station id from the mvm local station table */
3234 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3236 IWL_ERR(mvm, "Failed to find station\n");
3239 sta_id = mvm_sta->sta_id;
3242 * It is possible that the 'sta' parameter is NULL, and thus
3243 * there is a need to retrieve the sta from the local station
3247 sta = rcu_dereference_protected(
3248 mvm->fw_id_to_mac_id[sta_id],
3249 lockdep_is_held(&mvm->mutex));
3250 if (IS_ERR_OR_NULL(sta)) {
3251 IWL_ERR(mvm, "Invalid station id\n");
3256 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
3259 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3261 sta_id = mvmvif->mcast_sta.sta_id;
3264 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3265 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3266 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3267 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
3271 /* If the key_offset is not pre-assigned, we need to find a
3272 * new offset to use. In normal cases, the offset is not
3273 * pre-assigned, but during HW_RESTART we want to reuse the
3274 * same indices, so we pass them when this function is called.
3276 * In D3 entry, we need to hardcoded the indices (because the
3277 * firmware hardcodes the PTK offset to 0). In this case, we
3278 * need to make sure we don't overwrite the hw_key_idx in the
3279 * keyconf structure, because otherwise we cannot configure
3280 * the original ones back when resuming.
3282 if (key_offset == STA_KEY_IDX_INVALID) {
3283 key_offset = iwl_mvm_set_fw_key_idx(mvm);
3284 if (key_offset == STA_KEY_IDX_INVALID)
3286 keyconf->hw_key_idx = key_offset;
3289 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
3294 * For WEP, the same key is used for multicast and unicast. Upload it
3295 * again, using the same key offset, and now pointing the other one
3296 * to the same key slot (offset).
3297 * If this fails, remove the original as well.
3299 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3300 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3302 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
3303 key_offset, !mcast);
3305 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3310 __set_bit(key_offset, mvm->fw_key_table);
3313 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
3314 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
3315 sta ? sta->addr : zero_addr, ret);
3319 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
3320 struct ieee80211_vif *vif,
3321 struct ieee80211_sta *sta,
3322 struct ieee80211_key_conf *keyconf)
3324 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3325 struct iwl_mvm_sta *mvm_sta;
3326 u8 sta_id = IWL_MVM_INVALID_STA;
3329 lockdep_assert_held(&mvm->mutex);
3331 /* Get the station from the mvm local station table */
3332 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3334 sta_id = mvm_sta->sta_id;
3335 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)
3336 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id;
3339 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
3340 keyconf->keyidx, sta_id);
3342 if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3343 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3344 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256))
3345 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
3347 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
3348 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
3349 keyconf->hw_key_idx);
3353 /* track which key was deleted last */
3354 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
3355 if (mvm->fw_key_deleted[i] < U8_MAX)
3356 mvm->fw_key_deleted[i]++;
3358 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
3360 if (sta && !mvm_sta) {
3361 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
3365 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
3369 /* delete WEP key twice to get rid of (now useless) offset */
3370 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3371 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
3372 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
3377 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
3378 struct ieee80211_vif *vif,
3379 struct ieee80211_key_conf *keyconf,
3380 struct ieee80211_sta *sta, u32 iv32,
3383 struct iwl_mvm_sta *mvm_sta;
3384 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3385 bool mfp = sta ? sta->mfp : false;
3389 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3390 if (WARN_ON_ONCE(!mvm_sta))
3392 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast,
3393 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,
3400 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
3401 struct ieee80211_sta *sta)
3403 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3404 struct iwl_mvm_add_sta_cmd cmd = {
3405 .add_modify = STA_MODE_MODIFY,
3406 .sta_id = mvmsta->sta_id,
3407 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
3408 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3412 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3413 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3415 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3418 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
3419 struct ieee80211_sta *sta,
3420 enum ieee80211_frame_release_type reason,
3421 u16 cnt, u16 tids, bool more_data,
3422 bool single_sta_queue)
3424 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3425 struct iwl_mvm_add_sta_cmd cmd = {
3426 .add_modify = STA_MODE_MODIFY,
3427 .sta_id = mvmsta->sta_id,
3428 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
3429 .sleep_tx_count = cpu_to_le16(cnt),
3430 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3433 unsigned long _tids = tids;
3435 /* convert TIDs to ACs - we don't support TSPEC so that's OK
3436 * Note that this field is reserved and unused by firmware not
3437 * supporting GO uAPSD, so it's safe to always do this.
3439 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
3440 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
3442 /* If we're releasing frames from aggregation or dqa queues then check
3443 * if all the queues that we're releasing frames from, combined, have:
3444 * - more frames than the service period, in which case more_data
3446 * - fewer than 'cnt' frames, in which case we need to adjust the
3447 * firmware command (but do that unconditionally)
3449 if (single_sta_queue) {
3450 int remaining = cnt;
3453 spin_lock_bh(&mvmsta->lock);
3454 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
3455 struct iwl_mvm_tid_data *tid_data;
3458 tid_data = &mvmsta->tid_data[tid];
3460 n_queued = iwl_mvm_tid_queued(mvm, tid_data);
3461 if (n_queued > remaining) {
3466 remaining -= n_queued;
3468 sleep_tx_count = cnt - remaining;
3469 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
3470 mvmsta->sleep_tx_count = sleep_tx_count;
3471 spin_unlock_bh(&mvmsta->lock);
3473 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
3474 if (WARN_ON(cnt - remaining == 0)) {
3475 ieee80211_sta_eosp(sta);
3480 /* Note: this is ignored by firmware not supporting GO uAPSD */
3482 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;
3484 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
3485 mvmsta->next_status_eosp = true;
3486 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;
3488 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;
3491 /* block the Tx queues until the FW updated the sleep Tx count */
3492 iwl_trans_block_txq_ptrs(mvm->trans, true);
3494 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
3495 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
3496 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3498 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3501 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
3502 struct iwl_rx_cmd_buffer *rxb)
3504 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3505 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
3506 struct ieee80211_sta *sta;
3507 u32 sta_id = le32_to_cpu(notif->sta_id);
3509 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
3513 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
3514 if (!IS_ERR_OR_NULL(sta))
3515 ieee80211_sta_eosp(sta);
3519 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
3520 struct iwl_mvm_sta *mvmsta, bool disable)
3522 struct iwl_mvm_add_sta_cmd cmd = {
3523 .add_modify = STA_MODE_MODIFY,
3524 .sta_id = mvmsta->sta_id,
3525 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
3526 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
3527 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3531 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3532 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3534 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3537 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
3538 struct ieee80211_sta *sta,
3541 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3543 spin_lock_bh(&mvm_sta->lock);
3545 if (mvm_sta->disable_tx == disable) {
3546 spin_unlock_bh(&mvm_sta->lock);
3550 mvm_sta->disable_tx = disable;
3552 /* Tell mac80211 to start/stop queuing tx for this station */
3553 ieee80211_sta_block_awake(mvm->hw, sta, disable);
3555 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
3557 spin_unlock_bh(&mvm_sta->lock);
3560 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,
3561 struct iwl_mvm_vif *mvmvif,
3562 struct iwl_mvm_int_sta *sta,
3565 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
3566 struct iwl_mvm_add_sta_cmd cmd = {
3567 .add_modify = STA_MODE_MODIFY,
3568 .sta_id = sta->sta_id,
3569 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
3570 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
3571 .mac_id_n_color = cpu_to_le32(id),
3575 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0,
3576 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3578 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3581 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
3582 struct iwl_mvm_vif *mvmvif,
3585 struct ieee80211_sta *sta;
3586 struct iwl_mvm_sta *mvm_sta;
3589 lockdep_assert_held(&mvm->mutex);
3591 /* Block/unblock all the stations of the given mvmvif */
3592 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
3593 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3594 lockdep_is_held(&mvm->mutex));
3595 if (IS_ERR_OR_NULL(sta))
3598 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3599 if (mvm_sta->mac_id_n_color !=
3600 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
3603 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
3606 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
3609 /* Need to block/unblock also multicast station */
3610 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA)
3611 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
3612 &mvmvif->mcast_sta, disable);
3615 * Only unblock the broadcast station (FW blocks it for immediate
3616 * quiet, not the driver)
3618 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA)
3619 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,
3620 &mvmvif->bcast_sta, disable);
3623 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
3625 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3626 struct iwl_mvm_sta *mvmsta;
3630 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
3632 if (!WARN_ON(!mvmsta))
3633 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
3638 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)
3640 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
3643 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
3644 * to align the wrap around of ssn so we compare relevant values.
3646 if (mvm->trans->cfg->gen2)
3649 return ieee80211_sn_sub(sn, tid_data->next_reclaimed);