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 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
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22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
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30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 Intel Deutschland GmbH
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41 * modification, are permitted provided that the following conditions
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64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
67 #include <net/mac80211.h>
74 * New version of ADD_STA_sta command added new fields at the end of the
75 * structure, so sending the size of the relevant API's structure is enough to
76 * support both API versions.
78 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)
80 return iwl_mvm_has_new_rx_api(mvm) ?
81 sizeof(struct iwl_mvm_add_sta_cmd) :
82 sizeof(struct iwl_mvm_add_sta_cmd_v7);
85 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm,
86 enum nl80211_iftype iftype)
91 BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32);
92 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
94 lockdep_assert_held(&mvm->mutex);
96 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
97 if (iftype != NL80211_IFTYPE_STATION)
98 reserved_ids = BIT(0);
100 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
101 for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) {
102 if (BIT(sta_id) & reserved_ids)
105 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
106 lockdep_is_held(&mvm->mutex)))
109 return IWL_MVM_STATION_COUNT;
112 /* send station add/update command to firmware */
113 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
114 bool update, unsigned int flags)
116 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
117 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
118 .sta_id = mvm_sta->sta_id,
119 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
120 .add_modify = update ? 1 : 0,
121 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
122 STA_FLG_MIMO_EN_MSK),
123 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),
127 u32 agg_size = 0, mpdu_dens = 0;
129 if (!update || (flags & STA_MODIFY_QUEUES)) {
130 add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
131 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
133 if (flags & STA_MODIFY_QUEUES)
134 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;
137 switch (sta->bandwidth) {
138 case IEEE80211_STA_RX_BW_160:
139 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
141 case IEEE80211_STA_RX_BW_80:
142 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
144 case IEEE80211_STA_RX_BW_40:
145 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
147 case IEEE80211_STA_RX_BW_20:
148 if (sta->ht_cap.ht_supported)
149 add_sta_cmd.station_flags |=
150 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
154 switch (sta->rx_nss) {
156 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
159 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
162 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
166 switch (sta->smps_mode) {
167 case IEEE80211_SMPS_AUTOMATIC:
168 case IEEE80211_SMPS_NUM_MODES:
171 case IEEE80211_SMPS_STATIC:
173 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
176 case IEEE80211_SMPS_DYNAMIC:
177 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
179 case IEEE80211_SMPS_OFF:
184 if (sta->ht_cap.ht_supported) {
185 add_sta_cmd.station_flags_msk |=
186 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
187 STA_FLG_AGG_MPDU_DENS_MSK);
189 mpdu_dens = sta->ht_cap.ampdu_density;
192 if (sta->vht_cap.vht_supported) {
193 agg_size = sta->vht_cap.cap &
194 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
196 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
197 } else if (sta->ht_cap.ht_supported) {
198 agg_size = sta->ht_cap.ampdu_factor;
201 add_sta_cmd.station_flags |=
202 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
203 add_sta_cmd.station_flags |=
204 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
206 status = ADD_STA_SUCCESS;
207 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
208 iwl_mvm_add_sta_cmd_size(mvm),
209 &add_sta_cmd, &status);
213 switch (status & IWL_ADD_STA_STATUS_MASK) {
214 case ADD_STA_SUCCESS:
215 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
219 IWL_ERR(mvm, "ADD_STA failed\n");
226 static void iwl_mvm_rx_agg_session_expired(unsigned long data)
228 struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data;
229 struct iwl_mvm_baid_data *ba_data;
230 struct ieee80211_sta *sta;
231 struct iwl_mvm_sta *mvm_sta;
232 unsigned long timeout;
236 ba_data = rcu_dereference(*rcu_ptr);
238 if (WARN_ON(!ba_data))
241 if (!ba_data->timeout)
244 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
245 if (time_is_after_jiffies(timeout)) {
246 mod_timer(&ba_data->session_timer, timeout);
251 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]);
252 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
253 ieee80211_stop_rx_ba_session_offl(mvm_sta->vif,
254 sta->addr, ba_data->tid);
259 static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
260 struct ieee80211_sta *sta)
262 unsigned long used_hw_queues;
263 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
264 unsigned int wdg_timeout =
265 iwl_mvm_get_wd_timeout(mvm, NULL, true, false);
268 lockdep_assert_held(&mvm->mutex);
270 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
272 /* Find available queues, and allocate them to the ACs */
273 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
274 u8 queue = find_first_zero_bit(&used_hw_queues,
275 mvm->first_agg_queue);
277 if (queue >= mvm->first_agg_queue) {
278 IWL_ERR(mvm, "Failed to allocate STA queue\n");
282 __set_bit(queue, &used_hw_queues);
283 mvmsta->hw_queue[ac] = queue;
286 /* Found a place for all queues - enable them */
287 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
288 iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
289 mvmsta->hw_queue[ac],
290 iwl_mvm_ac_to_tx_fifo[ac], 0,
292 mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
298 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
299 struct ieee80211_sta *sta)
301 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
302 unsigned long sta_msk;
305 lockdep_assert_held(&mvm->mutex);
307 /* disable the TDLS STA-specific queues */
308 sta_msk = mvmsta->tfd_queue_msk;
309 for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE)
310 iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0);
313 /* Disable aggregations for a bitmap of TIDs for a given station */
314 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,
315 unsigned long disable_agg_tids,
318 struct iwl_mvm_add_sta_cmd cmd = {};
319 struct ieee80211_sta *sta;
320 struct iwl_mvm_sta *mvmsta;
325 spin_lock_bh(&mvm->queue_info_lock);
326 sta_id = mvm->queue_info[queue].ra_sta_id;
327 spin_unlock_bh(&mvm->queue_info_lock);
331 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
333 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
338 mvmsta = iwl_mvm_sta_from_mac80211(sta);
340 mvmsta->tid_disable_agg |= disable_agg_tids;
342 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
343 cmd.sta_id = mvmsta->sta_id;
344 cmd.add_modify = STA_MODE_MODIFY;
345 cmd.modify_mask = STA_MODIFY_QUEUES;
346 if (disable_agg_tids)
347 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;
349 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;
350 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
351 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
355 /* Notify FW of queue removal from the STA queues */
356 status = ADD_STA_SUCCESS;
357 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
358 iwl_mvm_add_sta_cmd_size(mvm),
364 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)
366 struct ieee80211_sta *sta;
367 struct iwl_mvm_sta *mvmsta;
368 unsigned long tid_bitmap;
369 unsigned long agg_tids = 0;
373 lockdep_assert_held(&mvm->mutex);
375 spin_lock_bh(&mvm->queue_info_lock);
376 sta_id = mvm->queue_info[queue].ra_sta_id;
377 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
378 spin_unlock_bh(&mvm->queue_info_lock);
380 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
381 lockdep_is_held(&mvm->mutex));
383 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
386 mvmsta = iwl_mvm_sta_from_mac80211(sta);
388 spin_lock_bh(&mvmsta->lock);
389 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
390 if (mvmsta->tid_data[tid].state == IWL_AGG_ON)
391 agg_tids |= BIT(tid);
393 spin_unlock_bh(&mvmsta->lock);
399 * Remove a queue from a station's resources.
400 * Note that this only marks as free. It DOESN'T delete a BA agreement, and
401 * doesn't disable the queue
403 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)
405 struct ieee80211_sta *sta;
406 struct iwl_mvm_sta *mvmsta;
407 unsigned long tid_bitmap;
408 unsigned long disable_agg_tids = 0;
412 lockdep_assert_held(&mvm->mutex);
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 = IEEE80211_INVAL_HW_QUEUE;
438 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */
439 spin_unlock_bh(&mvmsta->lock);
443 spin_lock_bh(&mvm->queue_info_lock);
444 /* Unmap MAC queues and TIDs from this queue */
445 mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
446 mvm->queue_info[queue].hw_queue_refcount = 0;
447 mvm->queue_info[queue].tid_bitmap = 0;
448 spin_unlock_bh(&mvm->queue_info_lock);
450 return disable_agg_tids;
453 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,
454 unsigned long tfd_queue_mask, u8 ac)
457 u8 ac_to_queue[IEEE80211_NUM_ACS];
460 lockdep_assert_held(&mvm->queue_info_lock);
462 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));
464 /* See what ACs the existing queues for this STA have */
465 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {
466 /* Only DATA queues can be shared */
467 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&
468 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)
471 /* Don't try and take queues being reconfigured */
472 if (mvm->queue_info[queue].status ==
473 IWL_MVM_QUEUE_RECONFIGURING)
476 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;
480 * The queue to share is chosen only from DATA queues as follows (in
481 * descending priority):
484 * 3. Highest AC queue that is lower than new AC
485 * 4. Any existing AC (there always is at least 1 DATA queue)
488 /* Priority 1: An AC_BE queue */
489 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)
490 queue = ac_to_queue[IEEE80211_AC_BE];
491 /* Priority 2: Same AC queue */
492 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
493 queue = ac_to_queue[ac];
494 /* Priority 3a: If new AC is VO and VI exists - use VI */
495 else if (ac == IEEE80211_AC_VO &&
496 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
497 queue = ac_to_queue[IEEE80211_AC_VI];
498 /* Priority 3b: No BE so only AC less than the new one is BK */
499 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)
500 queue = ac_to_queue[IEEE80211_AC_BK];
501 /* Priority 4a: No BE nor BK - use VI if exists */
502 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)
503 queue = ac_to_queue[IEEE80211_AC_VI];
504 /* Priority 4b: No BE, BK nor VI - use VO if exists */
505 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)
506 queue = ac_to_queue[IEEE80211_AC_VO];
508 /* Make sure queue found (or not) is legal */
509 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&
510 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&
511 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {
512 IWL_ERR(mvm, "No DATA queues available to share\n");
516 /* Make sure the queue isn't in the middle of being reconfigured */
517 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) {
519 "TXQ %d is in the middle of re-config - try again\n",
528 * If a given queue has a higher AC than the TID stream that is being compared
529 * to, the queue needs to be redirected to the lower AC. This function does that
530 * in such a case, otherwise - if no redirection required - it does nothing,
531 * unless the %force param is true.
533 int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid,
534 int ac, int ssn, unsigned int wdg_timeout,
537 struct iwl_scd_txq_cfg_cmd cmd = {
539 .action = SCD_CFG_DISABLE_QUEUE,
546 * If the AC is lower than current one - FIFO needs to be redirected to
547 * the lowest one of the streams in the queue. Check if this is needed
549 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with
550 * value 3 and VO with value 0, so to check if ac X is lower than ac Y
551 * we need to check if the numerical value of X is LARGER than of Y.
553 spin_lock_bh(&mvm->queue_info_lock);
554 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {
555 spin_unlock_bh(&mvm->queue_info_lock);
557 IWL_DEBUG_TX_QUEUES(mvm,
558 "No redirection needed on TXQ #%d\n",
563 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
564 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
565 cmd.tid = mvm->queue_info[queue].txq_tid;
566 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
567 shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1);
568 spin_unlock_bh(&mvm->queue_info_lock);
570 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",
571 queue, iwl_mvm_ac_to_tx_fifo[ac]);
573 /* Stop MAC queues and wait for this queue to empty */
574 iwl_mvm_stop_mac_queues(mvm, mq);
575 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue));
577 IWL_ERR(mvm, "Error draining queue %d before reconfig\n",
583 /* Before redirecting the queue we need to de-activate it */
584 iwl_trans_txq_disable(mvm->trans, queue, false);
585 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
587 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,
590 /* Make sure the SCD wrptr is correctly set before reconfiguring */
591 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
593 /* Update the TID "owner" of the queue */
594 spin_lock_bh(&mvm->queue_info_lock);
595 mvm->queue_info[queue].txq_tid = tid;
596 spin_unlock_bh(&mvm->queue_info_lock);
598 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
600 /* Redirect to lower AC */
601 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],
602 cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
605 /* Update AC marking of the queue */
606 spin_lock_bh(&mvm->queue_info_lock);
607 mvm->queue_info[queue].mac80211_ac = ac;
608 spin_unlock_bh(&mvm->queue_info_lock);
611 * Mark queue as shared in transport if shared
612 * Note this has to be done after queue enablement because enablement
613 * can also set this value, and there is no indication there to shared
617 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
620 /* Continue using the MAC queues */
621 iwl_mvm_start_mac_queues(mvm, mq);
626 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
627 struct ieee80211_sta *sta, u8 ac, int tid,
628 struct ieee80211_hdr *hdr)
630 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
631 struct iwl_trans_txq_scd_cfg cfg = {
632 .fifo = iwl_mvm_ac_to_tx_fifo[ac],
633 .sta_id = mvmsta->sta_id,
635 .frame_limit = IWL_FRAME_LIMIT,
637 unsigned int wdg_timeout =
638 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
639 u8 mac_queue = mvmsta->vif->hw_queue[ac];
641 bool using_inactive_queue = false;
642 unsigned long disable_agg_tids = 0;
643 enum iwl_mvm_agg_state queue_state;
644 bool shared_queue = false;
646 unsigned long tfd_queue_mask;
649 lockdep_assert_held(&mvm->mutex);
651 spin_lock_bh(&mvmsta->lock);
652 tfd_queue_mask = mvmsta->tfd_queue_msk;
653 spin_unlock_bh(&mvmsta->lock);
655 spin_lock_bh(&mvm->queue_info_lock);
658 * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one
661 if (!ieee80211_is_data_qos(hdr->frame_control) ||
662 ieee80211_is_qos_nullfunc(hdr->frame_control)) {
663 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
664 IWL_MVM_DQA_MIN_MGMT_QUEUE,
665 IWL_MVM_DQA_MAX_MGMT_QUEUE);
666 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)
667 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",
670 /* If no such queue is found, we'll use a DATA queue instead */
673 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&
674 (mvm->queue_info[mvmsta->reserved_queue].status ==
675 IWL_MVM_QUEUE_RESERVED ||
676 mvm->queue_info[mvmsta->reserved_queue].status ==
677 IWL_MVM_QUEUE_INACTIVE)) {
678 queue = mvmsta->reserved_queue;
679 mvm->queue_info[queue].reserved = true;
680 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);
684 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
685 IWL_MVM_DQA_MIN_DATA_QUEUE,
686 IWL_MVM_DQA_MAX_DATA_QUEUE);
689 * Check if this queue is already allocated but inactive.
690 * In such a case, we'll need to first free this queue before enabling
691 * it again, so we'll mark it as reserved to make sure no new traffic
695 mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) {
696 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
697 using_inactive_queue = true;
698 IWL_DEBUG_TX_QUEUES(mvm,
699 "Re-assigning TXQ %d: sta_id=%d, tid=%d\n",
700 queue, mvmsta->sta_id, tid);
703 /* No free queue - we'll have to share */
705 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);
708 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;
713 * Mark TXQ as ready, even though it hasn't been fully configured yet,
714 * to make sure no one else takes it.
715 * This will allow avoiding re-acquiring the lock at the end of the
716 * configuration. On error we'll mark it back as free.
718 if ((queue > 0) && !shared_queue)
719 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
721 spin_unlock_bh(&mvm->queue_info_lock);
723 /* This shouldn't happen - out of queues */
724 if (WARN_ON(queue <= 0)) {
725 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",
731 * Actual en/disablement of aggregations is through the ADD_STA HCMD,
732 * but for configuring the SCD to send A-MPDUs we need to mark the queue
734 * Mark all DATA queues as allowing to be aggregated at some point
736 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
737 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
740 * If this queue was previously inactive (idle) - we need to free it
743 if (using_inactive_queue) {
744 struct iwl_scd_txq_cfg_cmd cmd = {
746 .action = SCD_CFG_DISABLE_QUEUE,
750 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);
752 spin_lock_bh(&mvm->queue_info_lock);
753 txq_curr_ac = mvm->queue_info[queue].mac80211_ac;
754 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
755 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[txq_curr_ac];
756 cmd.tid = mvm->queue_info[queue].txq_tid;
757 spin_unlock_bh(&mvm->queue_info_lock);
759 /* Disable the queue */
760 if (disable_agg_tids)
761 iwl_mvm_invalidate_sta_queue(mvm, queue,
762 disable_agg_tids, false);
763 iwl_trans_txq_disable(mvm->trans, queue, false);
764 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
768 "Failed to free inactive queue %d (ret=%d)\n",
771 /* Re-mark the inactive queue as inactive */
772 spin_lock_bh(&mvm->queue_info_lock);
773 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
774 spin_unlock_bh(&mvm->queue_info_lock);
779 /* If TXQ is allocated to another STA, update removal in FW */
780 if (cmd.sta_id != mvmsta->sta_id)
781 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);
784 IWL_DEBUG_TX_QUEUES(mvm,
785 "Allocating %squeue #%d to sta %d on tid %d\n",
786 shared_queue ? "shared " : "", queue,
787 mvmsta->sta_id, tid);
790 /* Disable any open aggs on this queue */
791 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);
793 if (disable_agg_tids) {
794 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",
796 iwl_mvm_invalidate_sta_queue(mvm, queue,
797 disable_agg_tids, false);
801 ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
802 iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg,
806 * Mark queue as shared in transport if shared
807 * Note this has to be done after queue enablement because enablement
808 * can also set this value, and there is no indication there to shared
812 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);
814 spin_lock_bh(&mvmsta->lock);
815 mvmsta->tid_data[tid].txq_id = queue;
816 mvmsta->tid_data[tid].is_tid_active = true;
817 mvmsta->tfd_queue_msk |= BIT(queue);
818 queue_state = mvmsta->tid_data[tid].state;
820 if (mvmsta->reserved_queue == queue)
821 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;
822 spin_unlock_bh(&mvmsta->lock);
825 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);
829 /* If we need to re-enable aggregations... */
830 if (queue_state == IWL_AGG_ON) {
831 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
836 /* Redirect queue, if needed */
837 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn,
846 iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0);
851 static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue)
853 struct iwl_scd_txq_cfg_cmd cmd = {
855 .action = SCD_CFG_UPDATE_QUEUE_TID,
859 unsigned long tid_bitmap;
862 lockdep_assert_held(&mvm->mutex);
864 spin_lock_bh(&mvm->queue_info_lock);
865 sta_id = mvm->queue_info[queue].ra_sta_id;
866 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
867 spin_unlock_bh(&mvm->queue_info_lock);
869 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))
872 /* Find any TID for queue */
873 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
875 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
877 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
879 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",
882 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",
886 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
888 struct ieee80211_sta *sta;
889 struct iwl_mvm_sta *mvmsta;
892 unsigned long tid_bitmap;
893 unsigned int wdg_timeout;
897 lockdep_assert_held(&mvm->mutex);
899 spin_lock_bh(&mvm->queue_info_lock);
900 sta_id = mvm->queue_info[queue].ra_sta_id;
901 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
902 spin_unlock_bh(&mvm->queue_info_lock);
904 /* Find TID for queue, and make sure it is the only one on the queue */
905 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);
906 if (tid_bitmap != BIT(tid)) {
907 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",
912 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,
915 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
916 lockdep_is_held(&mvm->mutex));
918 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
921 mvmsta = iwl_mvm_sta_from_mac80211(sta);
922 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false);
924 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);
926 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid,
927 tid_to_mac80211_ac[tid], ssn,
930 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);
934 /* If aggs should be turned back on - do it */
935 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
936 struct iwl_mvm_add_sta_cmd cmd = {0};
938 mvmsta->tid_disable_agg &= ~BIT(tid);
940 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
941 cmd.sta_id = mvmsta->sta_id;
942 cmd.add_modify = STA_MODE_MODIFY;
943 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;
944 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);
945 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);
947 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
948 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
950 IWL_DEBUG_TX_QUEUES(mvm,
951 "TXQ #%d is now aggregated again\n",
954 /* Mark queue intenally as aggregating again */
955 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);
959 spin_lock_bh(&mvm->queue_info_lock);
960 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
961 spin_unlock_bh(&mvm->queue_info_lock);
964 static inline u8 iwl_mvm_tid_to_ac_queue(int tid)
966 if (tid == IWL_MAX_TID_COUNT)
967 return IEEE80211_AC_VO; /* MGMT */
969 return tid_to_mac80211_ac[tid];
972 static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm,
973 struct ieee80211_sta *sta, int tid)
975 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
976 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
978 struct ieee80211_hdr *hdr;
979 struct sk_buff_head deferred_tx;
981 bool no_queue = false; /* Marks if there is a problem with the queue */
984 lockdep_assert_held(&mvm->mutex);
986 skb = skb_peek(&tid_data->deferred_tx_frames);
989 hdr = (void *)skb->data;
991 ac = iwl_mvm_tid_to_ac_queue(tid);
992 mac_queue = IEEE80211_SKB_CB(skb)->hw_queue;
994 if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE &&
995 iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) {
997 "Can't alloc TXQ for sta %d tid %d - dropping frame\n",
998 mvmsta->sta_id, tid);
1001 * Mark queue as problematic so later the deferred traffic is
1002 * freed, as we can do nothing with it
1007 __skb_queue_head_init(&deferred_tx);
1009 /* Disable bottom-halves when entering TX path */
1011 spin_lock(&mvmsta->lock);
1012 skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx);
1013 spin_unlock(&mvmsta->lock);
1015 while ((skb = __skb_dequeue(&deferred_tx)))
1016 if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta))
1017 ieee80211_free_txskb(mvm->hw, skb);
1021 iwl_mvm_start_mac_queues(mvm, BIT(mac_queue));
1024 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
1026 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
1028 struct ieee80211_sta *sta;
1029 struct iwl_mvm_sta *mvmsta;
1030 unsigned long deferred_tid_traffic;
1031 int queue, sta_id, tid;
1033 /* Check inactivity of queues */
1034 iwl_mvm_inactivity_check(mvm);
1036 mutex_lock(&mvm->mutex);
1038 /* Reconfigure queues requiring reconfiguation */
1039 for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) {
1043 spin_lock_bh(&mvm->queue_info_lock);
1044 reconfig = (mvm->queue_info[queue].status ==
1045 IWL_MVM_QUEUE_RECONFIGURING);
1048 * We need to take into account a situation in which a TXQ was
1049 * allocated to TID x, and then turned shared by adding TIDs y
1050 * and z. If TID x becomes inactive and is removed from the TXQ,
1051 * ownership must be given to one of the remaining TIDs.
1052 * This is mainly because if TID x continues - a new queue can't
1053 * be allocated for it as long as it is an owner of another TXQ.
1055 change_owner = !(mvm->queue_info[queue].tid_bitmap &
1056 BIT(mvm->queue_info[queue].txq_tid)) &&
1057 (mvm->queue_info[queue].status ==
1058 IWL_MVM_QUEUE_SHARED);
1059 spin_unlock_bh(&mvm->queue_info_lock);
1062 iwl_mvm_unshare_queue(mvm, queue);
1063 else if (change_owner)
1064 iwl_mvm_change_queue_owner(mvm, queue);
1067 /* Go over all stations with deferred traffic */
1068 for_each_set_bit(sta_id, mvm->sta_deferred_frames,
1069 IWL_MVM_STATION_COUNT) {
1070 clear_bit(sta_id, mvm->sta_deferred_frames);
1071 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1072 lockdep_is_held(&mvm->mutex));
1073 if (IS_ERR_OR_NULL(sta))
1076 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1077 deferred_tid_traffic = mvmsta->deferred_traffic_tid_map;
1079 for_each_set_bit(tid, &deferred_tid_traffic,
1080 IWL_MAX_TID_COUNT + 1)
1081 iwl_mvm_tx_deferred_stream(mvm, sta, tid);
1084 mutex_unlock(&mvm->mutex);
1087 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,
1088 struct ieee80211_sta *sta,
1089 enum nl80211_iftype vif_type)
1091 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1095 * Check for inactive queues, so we don't reach a situation where we
1096 * can't add a STA due to a shortage in queues that doesn't really exist
1098 iwl_mvm_inactivity_check(mvm);
1100 spin_lock_bh(&mvm->queue_info_lock);
1102 /* Make sure we have free resources for this STA */
1103 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&
1104 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount &&
1105 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==
1106 IWL_MVM_QUEUE_FREE))
1107 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
1109 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
1110 IWL_MVM_DQA_MIN_DATA_QUEUE,
1111 IWL_MVM_DQA_MAX_DATA_QUEUE);
1113 spin_unlock_bh(&mvm->queue_info_lock);
1114 IWL_ERR(mvm, "No available queues for new station\n");
1117 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;
1119 spin_unlock_bh(&mvm->queue_info_lock);
1121 mvmsta->reserved_queue = queue;
1123 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",
1124 queue, mvmsta->sta_id);
1130 * In DQA mode, after a HW restart the queues should be allocated as before, in
1131 * order to avoid race conditions when there are shared queues. This function
1132 * does the re-mapping and queue allocation.
1134 * Note that re-enabling aggregations isn't done in this function.
1136 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
1137 struct iwl_mvm_sta *mvm_sta)
1139 unsigned int wdg_timeout =
1140 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false);
1142 struct iwl_trans_txq_scd_cfg cfg = {
1143 .sta_id = mvm_sta->sta_id,
1144 .frame_limit = IWL_FRAME_LIMIT,
1147 /* Make sure reserved queue is still marked as such (if allocated) */
1148 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)
1149 mvm->queue_info[mvm_sta->reserved_queue].status =
1150 IWL_MVM_QUEUE_RESERVED;
1152 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1153 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];
1154 int txq_id = tid_data->txq_id;
1158 if (txq_id == IEEE80211_INVAL_HW_QUEUE)
1161 skb_queue_head_init(&tid_data->deferred_tx_frames);
1163 ac = tid_to_mac80211_ac[i];
1164 mac_queue = mvm_sta->vif->hw_queue[ac];
1167 cfg.fifo = iwl_mvm_ac_to_tx_fifo[ac];
1168 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
1169 txq_id == IWL_MVM_DQA_BSS_CLIENT_QUEUE);
1171 IWL_DEBUG_TX_QUEUES(mvm,
1172 "Re-mapping sta %d tid %d to queue %d\n",
1173 mvm_sta->sta_id, i, txq_id);
1175 iwl_mvm_enable_txq(mvm, txq_id, mac_queue,
1176 IEEE80211_SEQ_TO_SN(tid_data->seq_number),
1179 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
1182 atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0);
1185 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
1186 struct ieee80211_vif *vif,
1187 struct ieee80211_sta *sta)
1189 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1190 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1191 struct iwl_mvm_rxq_dup_data *dup_data;
1194 lockdep_assert_held(&mvm->mutex);
1196 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1197 sta_id = iwl_mvm_find_free_sta_id(mvm,
1198 ieee80211_vif_type_p2p(vif));
1200 sta_id = mvm_sta->sta_id;
1202 if (sta_id == IWL_MVM_STATION_COUNT)
1205 spin_lock_init(&mvm_sta->lock);
1207 /* In DQA mode, if this is a HW restart, re-alloc existing queues */
1208 if (iwl_mvm_is_dqa_supported(mvm) &&
1209 test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1210 iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta);
1214 mvm_sta->sta_id = sta_id;
1215 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
1218 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1219 mvm_sta->tx_protection = 0;
1220 mvm_sta->tt_tx_protection = false;
1222 /* HW restart, don't assume the memory has been zeroed */
1223 atomic_set(&mvm->pending_frames[sta_id], 0);
1224 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
1225 mvm_sta->tfd_queue_msk = 0;
1228 * Allocate new queues for a TDLS station, unless we're in DQA mode,
1229 * and then they'll be allocated dynamically
1231 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) {
1232 ret = iwl_mvm_tdls_sta_init(mvm, sta);
1235 } else if (!iwl_mvm_is_dqa_supported(mvm)) {
1236 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1237 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
1238 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
1241 /* for HW restart - reset everything but the sequence number */
1242 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
1243 u16 seq = mvm_sta->tid_data[i].seq_number;
1244 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
1245 mvm_sta->tid_data[i].seq_number = seq;
1247 if (!iwl_mvm_is_dqa_supported(mvm))
1251 * Mark all queues for this STA as unallocated and defer TX
1252 * frames until the queue is allocated
1254 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1255 skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames);
1257 mvm_sta->deferred_traffic_tid_map = 0;
1258 mvm_sta->agg_tids = 0;
1260 if (iwl_mvm_has_new_rx_api(mvm) &&
1261 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1262 dup_data = kcalloc(mvm->trans->num_rx_queues,
1267 mvm_sta->dup_data = dup_data;
1270 if (iwl_mvm_is_dqa_supported(mvm)) {
1271 ret = iwl_mvm_reserve_sta_stream(mvm, sta,
1272 ieee80211_vif_type_p2p(vif));
1278 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0);
1282 if (vif->type == NL80211_IFTYPE_STATION) {
1284 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
1285 mvmvif->ap_sta_id = sta_id;
1287 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
1291 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
1296 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
1297 iwl_mvm_tdls_sta_deinit(mvm, sta);
1301 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
1304 struct iwl_mvm_add_sta_cmd cmd = {};
1308 lockdep_assert_held(&mvm->mutex);
1310 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
1311 cmd.sta_id = mvmsta->sta_id;
1312 cmd.add_modify = STA_MODE_MODIFY;
1313 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
1314 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
1316 status = ADD_STA_SUCCESS;
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, "Frames for staid %d will drained in fw\n",
1330 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
1339 * Remove a station from the FW table. Before sending the command to remove
1340 * the station validate that the station is indeed known to the driver (sanity
1343 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
1345 struct ieee80211_sta *sta;
1346 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
1351 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1352 lockdep_is_held(&mvm->mutex));
1354 /* Note: internal stations are marked as error values */
1356 IWL_ERR(mvm, "Invalid station id\n");
1360 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
1361 sizeof(rm_sta_cmd), &rm_sta_cmd);
1363 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
1370 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
1372 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
1376 * The mutex is needed because of the SYNC cmd, but not only: if the
1377 * work would run concurrently with iwl_mvm_rm_sta, it would run before
1378 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
1379 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
1382 mutex_lock(&mvm->mutex);
1384 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
1386 struct ieee80211_sta *sta =
1387 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1388 lockdep_is_held(&mvm->mutex));
1391 * This station is in use or RCU-removed; the latter happens in
1392 * managed mode, where mac80211 removes the station before we
1393 * can remove it from firmware (we can only do that after the
1394 * MAC is marked unassociated), and possibly while the deauth
1395 * frame to disconnect from the AP is still queued. Then, the
1396 * station pointer is -ENOENT when the last skb is reclaimed.
1398 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
1401 if (PTR_ERR(sta) == -EINVAL) {
1402 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
1408 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
1413 WARN_ON(PTR_ERR(sta) != -EBUSY);
1414 /* This station was removed and we waited until it got drained,
1415 * we can now proceed and remove it.
1417 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1420 "Couldn't remove sta %d after it was drained\n",
1424 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
1425 clear_bit(sta_id, mvm->sta_drained);
1427 if (mvm->tfd_drained[sta_id]) {
1428 unsigned long i, msk = mvm->tfd_drained[sta_id];
1430 for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
1431 iwl_mvm_disable_txq(mvm, i, i,
1432 IWL_MAX_TID_COUNT, 0);
1434 mvm->tfd_drained[sta_id] = 0;
1435 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
1440 mutex_unlock(&mvm->mutex);
1443 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,
1444 struct ieee80211_vif *vif,
1445 struct iwl_mvm_sta *mvm_sta)
1450 lockdep_assert_held(&mvm->mutex);
1452 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
1453 if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE)
1456 ac = iwl_mvm_tid_to_ac_queue(i);
1457 iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id,
1458 vif->hw_queue[ac], i, 0);
1459 mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE;
1463 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
1464 struct ieee80211_vif *vif,
1465 struct ieee80211_sta *sta)
1467 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1468 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1469 u8 sta_id = mvm_sta->sta_id;
1472 lockdep_assert_held(&mvm->mutex);
1474 if (iwl_mvm_has_new_rx_api(mvm))
1475 kfree(mvm_sta->dup_data);
1477 if ((vif->type == NL80211_IFTYPE_STATION &&
1478 mvmvif->ap_sta_id == sta_id) ||
1479 iwl_mvm_is_dqa_supported(mvm)){
1480 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
1483 /* flush its queues here since we are freeing mvm_sta */
1484 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0);
1487 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
1488 mvm_sta->tfd_queue_msk);
1491 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
1493 /* If DQA is supported - the queues can be disabled now */
1494 if (iwl_mvm_is_dqa_supported(mvm)) {
1495 u8 reserved_txq = mvm_sta->reserved_queue;
1496 enum iwl_mvm_queue_status *status;
1498 iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta);
1501 * If pending_frames is set at this point - it must be
1502 * driver internal logic error, since queues are empty
1503 * and removed successuly.
1504 * warn on it but set it to 0 anyway to avoid station
1505 * not being removed later in the function
1507 WARN_ON(atomic_xchg(&mvm->pending_frames[sta_id], 0));
1510 * If no traffic has gone through the reserved TXQ - it
1511 * is still marked as IWL_MVM_QUEUE_RESERVED, and
1512 * should be manually marked as free again
1514 spin_lock_bh(&mvm->queue_info_lock);
1515 status = &mvm->queue_info[reserved_txq].status;
1516 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&
1517 (*status != IWL_MVM_QUEUE_FREE),
1518 "sta_id %d reserved txq %d status %d",
1519 sta_id, reserved_txq, *status)) {
1520 spin_unlock_bh(&mvm->queue_info_lock);
1524 *status = IWL_MVM_QUEUE_FREE;
1525 spin_unlock_bh(&mvm->queue_info_lock);
1528 if (vif->type == NL80211_IFTYPE_STATION &&
1529 mvmvif->ap_sta_id == sta_id) {
1530 /* if associated - we can't remove the AP STA now */
1531 if (vif->bss_conf.assoc)
1534 /* unassoc - go ahead - remove the AP STA now */
1535 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1537 /* clear d0i3_ap_sta_id if no longer relevant */
1538 if (mvm->d0i3_ap_sta_id == sta_id)
1539 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1544 * This shouldn't happen - the TDLS channel switch should be canceled
1545 * before the STA is removed.
1547 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {
1548 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
1549 cancel_delayed_work(&mvm->tdls_cs.dwork);
1553 * Make sure that the tx response code sees the station as -EBUSY and
1554 * calls the drain worker.
1556 spin_lock_bh(&mvm_sta->lock);
1559 * There are frames pending on the AC queues for this station.
1560 * We need to wait until all the frames are drained...
1562 if (atomic_read(&mvm->pending_frames[sta_id])) {
1563 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id],
1565 spin_unlock_bh(&mvm_sta->lock);
1567 /* disable TDLS sta queues on drain complete */
1569 mvm->tfd_drained[sta_id] = mvm_sta->tfd_queue_msk;
1570 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", sta_id);
1573 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
1575 spin_unlock_bh(&mvm_sta->lock);
1577 if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls)
1578 iwl_mvm_tdls_sta_deinit(mvm, sta);
1580 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
1581 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
1587 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
1588 struct ieee80211_vif *vif,
1591 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
1593 lockdep_assert_held(&mvm->mutex);
1595 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
1599 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
1600 struct iwl_mvm_int_sta *sta,
1601 u32 qmask, enum nl80211_iftype iftype)
1603 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1604 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
1605 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
1609 sta->tfd_queue_msk = qmask;
1611 /* put a non-NULL value so iterating over the stations won't stop */
1612 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
1616 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
1617 struct iwl_mvm_int_sta *sta)
1619 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
1620 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
1621 sta->sta_id = IWL_MVM_STATION_COUNT;
1624 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
1625 struct iwl_mvm_int_sta *sta,
1627 u16 mac_id, u16 color)
1629 struct iwl_mvm_add_sta_cmd cmd;
1633 lockdep_assert_held(&mvm->mutex);
1635 memset(&cmd, 0, sizeof(cmd));
1636 cmd.sta_id = sta->sta_id;
1637 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
1640 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
1641 cmd.tid_disable_tx = cpu_to_le16(0xffff);
1644 memcpy(cmd.addr, addr, ETH_ALEN);
1646 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
1647 iwl_mvm_add_sta_cmd_size(mvm),
1652 switch (status & IWL_ADD_STA_STATUS_MASK) {
1653 case ADD_STA_SUCCESS:
1654 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
1658 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
1665 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
1667 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
1668 mvm->cfg->base_params->wd_timeout :
1669 IWL_WATCHDOG_DISABLED;
1672 lockdep_assert_held(&mvm->mutex);
1674 /* Map Aux queue to fifo - needs to happen before adding Aux station */
1675 if (!iwl_mvm_is_dqa_supported(mvm))
1676 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue,
1677 IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
1679 /* Allocate aux station and assign to it the aux queue */
1680 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
1681 NL80211_IFTYPE_UNSPECIFIED);
1685 if (iwl_mvm_is_dqa_supported(mvm)) {
1686 struct iwl_trans_txq_scd_cfg cfg = {
1687 .fifo = IWL_MVM_TX_FIFO_MCAST,
1688 .sta_id = mvm->aux_sta.sta_id,
1689 .tid = IWL_MAX_TID_COUNT,
1691 .frame_limit = IWL_FRAME_LIMIT,
1694 iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg,
1698 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
1702 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1706 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1708 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1710 lockdep_assert_held(&mvm->mutex);
1711 return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr,
1715 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1719 lockdep_assert_held(&mvm->mutex);
1721 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);
1723 IWL_WARN(mvm, "Failed sending remove station\n");
1728 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)
1730 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);
1733 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
1735 lockdep_assert_held(&mvm->mutex);
1737 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
1741 * Send the add station command for the vif's broadcast station.
1742 * Assumes that the station was already allocated.
1744 * @mvm: the mvm component
1745 * @vif: the interface to which the broadcast station is added
1746 * @bsta: the broadcast station to add.
1748 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1751 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
1752 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1753 const u8 *baddr = _baddr;
1755 lockdep_assert_held(&mvm->mutex);
1757 if (iwl_mvm_is_dqa_supported(mvm)) {
1758 struct iwl_trans_txq_scd_cfg cfg = {
1759 .fifo = IWL_MVM_TX_FIFO_VO,
1760 .sta_id = mvmvif->bcast_sta.sta_id,
1761 .tid = IWL_MAX_TID_COUNT,
1763 .frame_limit = IWL_FRAME_LIMIT,
1765 unsigned int wdg_timeout =
1766 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
1769 if ((vif->type == NL80211_IFTYPE_AP) &&
1770 (mvmvif->bcast_sta.tfd_queue_msk &
1771 BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE)))
1772 queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
1773 else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) &&
1774 (mvmvif->bcast_sta.tfd_queue_msk &
1775 BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE)))
1776 queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
1777 else if (WARN(1, "Missed required TXQ for adding bcast STA\n"))
1780 iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg,
1784 if (vif->type == NL80211_IFTYPE_ADHOC)
1785 baddr = vif->bss_conf.bssid;
1787 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
1790 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
1791 mvmvif->id, mvmvif->color);
1794 /* Send the FW a request to remove the station from it's internal data
1795 * structures, but DO NOT remove the entry from the local data structures. */
1796 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1798 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1801 lockdep_assert_held(&mvm->mutex);
1803 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
1805 IWL_WARN(mvm, "Failed sending remove station\n");
1809 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1811 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1814 lockdep_assert_held(&mvm->mutex);
1816 if (!iwl_mvm_is_dqa_supported(mvm))
1817 qmask = iwl_mvm_mac_get_queues_mask(vif);
1819 if (vif->type == NL80211_IFTYPE_AP) {
1821 * The firmware defines the TFD queue mask to only be relevant
1822 * for *unicast* queues, so the multicast (CAB) queue shouldn't
1825 qmask &= ~BIT(vif->cab_queue);
1827 if (iwl_mvm_is_dqa_supported(mvm))
1828 qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE);
1829 } else if (iwl_mvm_is_dqa_supported(mvm) &&
1830 vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1831 qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE);
1834 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
1835 ieee80211_vif_type_p2p(vif));
1838 /* Allocate a new station entry for the broadcast station to the given vif,
1839 * and send it to the FW.
1840 * Note that each P2P mac should have its own broadcast station.
1842 * @mvm: the mvm component
1843 * @vif: the interface to which the broadcast station is added
1844 * @bsta: the broadcast station to add. */
1845 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1847 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1848 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
1851 lockdep_assert_held(&mvm->mutex);
1853 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1857 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1860 iwl_mvm_dealloc_int_sta(mvm, bsta);
1865 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1867 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1869 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1873 * Send the FW a request to remove the station from it's internal data
1874 * structures, and in addition remove it from the local data structure.
1876 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1880 lockdep_assert_held(&mvm->mutex);
1882 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
1884 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1889 #define IWL_MAX_RX_BA_SESSIONS 16
1891 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)
1893 struct iwl_mvm_delba_notif notif = {
1894 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA,
1898 iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif));
1901 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,
1902 struct iwl_mvm_baid_data *data)
1906 iwl_mvm_sync_rxq_del_ba(mvm, data->baid);
1908 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1910 struct iwl_mvm_reorder_buffer *reorder_buf =
1911 &data->reorder_buf[i];
1913 spin_lock_bh(&reorder_buf->lock);
1914 if (likely(!reorder_buf->num_stored)) {
1915 spin_unlock_bh(&reorder_buf->lock);
1920 * This shouldn't happen in regular DELBA since the internal
1921 * delBA notification should trigger a release of all frames in
1922 * the reorder buffer.
1926 for (j = 0; j < reorder_buf->buf_size; j++)
1927 __skb_queue_purge(&reorder_buf->entries[j]);
1929 * Prevent timer re-arm. This prevents a very far fetched case
1930 * where we timed out on the notification. There may be prior
1931 * RX frames pending in the RX queue before the notification
1932 * that might get processed between now and the actual deletion
1933 * and we would re-arm the timer although we are deleting the
1936 reorder_buf->removed = true;
1937 spin_unlock_bh(&reorder_buf->lock);
1938 del_timer_sync(&reorder_buf->reorder_timer);
1942 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,
1944 struct iwl_mvm_baid_data *data,
1945 u16 ssn, u8 buf_size)
1949 for (i = 0; i < mvm->trans->num_rx_queues; i++) {
1950 struct iwl_mvm_reorder_buffer *reorder_buf =
1951 &data->reorder_buf[i];
1954 reorder_buf->num_stored = 0;
1955 reorder_buf->head_sn = ssn;
1956 reorder_buf->buf_size = buf_size;
1957 /* rx reorder timer */
1958 reorder_buf->reorder_timer.function =
1959 iwl_mvm_reorder_timer_expired;
1960 reorder_buf->reorder_timer.data = (unsigned long)reorder_buf;
1961 init_timer(&reorder_buf->reorder_timer);
1962 spin_lock_init(&reorder_buf->lock);
1963 reorder_buf->mvm = mvm;
1964 reorder_buf->queue = i;
1965 reorder_buf->sta_id = sta_id;
1966 for (j = 0; j < reorder_buf->buf_size; j++)
1967 __skb_queue_head_init(&reorder_buf->entries[j]);
1971 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
1972 int tid, u16 ssn, bool start, u8 buf_size, u16 timeout)
1974 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1975 struct iwl_mvm_add_sta_cmd cmd = {};
1976 struct iwl_mvm_baid_data *baid_data = NULL;
1980 lockdep_assert_held(&mvm->mutex);
1982 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
1983 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
1987 if (iwl_mvm_has_new_rx_api(mvm) && start) {
1989 * Allocate here so if allocation fails we can bail out early
1990 * before starting the BA session in the firmware
1992 baid_data = kzalloc(sizeof(*baid_data) +
1993 mvm->trans->num_rx_queues *
1994 sizeof(baid_data->reorder_buf[0]),
2000 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
2001 cmd.sta_id = mvm_sta->sta_id;
2002 cmd.add_modify = STA_MODE_MODIFY;
2004 cmd.add_immediate_ba_tid = (u8) tid;
2005 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
2006 cmd.rx_ba_window = cpu_to_le16((u16)buf_size);
2008 cmd.remove_immediate_ba_tid = (u8) tid;
2010 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
2011 STA_MODIFY_REMOVE_BA_TID;
2013 status = ADD_STA_SUCCESS;
2014 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2015 iwl_mvm_add_sta_cmd_size(mvm),
2020 switch (status & IWL_ADD_STA_STATUS_MASK) {
2021 case ADD_STA_SUCCESS:
2022 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",
2023 start ? "start" : "stopp");
2025 case ADD_STA_IMMEDIATE_BA_FAILURE:
2026 IWL_WARN(mvm, "RX BA Session refused by fw\n");
2031 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
2032 start ? "start" : "stopp", status);
2042 mvm->rx_ba_sessions++;
2044 if (!iwl_mvm_has_new_rx_api(mvm))
2047 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) {
2051 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >>
2052 IWL_ADD_STA_BAID_SHIFT);
2053 baid_data->baid = baid;
2054 baid_data->timeout = timeout;
2055 baid_data->last_rx = jiffies;
2056 setup_timer(&baid_data->session_timer,
2057 iwl_mvm_rx_agg_session_expired,
2058 (unsigned long)&mvm->baid_map[baid]);
2059 baid_data->mvm = mvm;
2060 baid_data->tid = tid;
2061 baid_data->sta_id = mvm_sta->sta_id;
2063 mvm_sta->tid_to_baid[tid] = baid;
2065 mod_timer(&baid_data->session_timer,
2066 TU_TO_EXP_TIME(timeout * 2));
2068 iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id,
2069 baid_data, ssn, buf_size);
2071 * protect the BA data with RCU to cover a case where our
2072 * internal RX sync mechanism will timeout (not that it's
2073 * supposed to happen) and we will free the session data while
2074 * RX is being processed in parallel
2076 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",
2077 mvm_sta->sta_id, tid, baid);
2078 WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
2079 rcu_assign_pointer(mvm->baid_map[baid], baid_data);
2081 u8 baid = mvm_sta->tid_to_baid[tid];
2083 if (mvm->rx_ba_sessions > 0)
2084 /* check that restart flow didn't zero the counter */
2085 mvm->rx_ba_sessions--;
2086 if (!iwl_mvm_has_new_rx_api(mvm))
2089 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
2092 baid_data = rcu_access_pointer(mvm->baid_map[baid]);
2093 if (WARN_ON(!baid_data))
2096 /* synchronize all rx queues so we can safely delete */
2097 iwl_mvm_free_reorder(mvm, baid_data);
2098 del_timer_sync(&baid_data->session_timer);
2099 RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
2100 kfree_rcu(baid_data, rcu_head);
2101 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);
2110 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
2111 int tid, u8 queue, bool start)
2113 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2114 struct iwl_mvm_add_sta_cmd cmd = {};
2118 lockdep_assert_held(&mvm->mutex);
2121 mvm_sta->tfd_queue_msk |= BIT(queue);
2122 mvm_sta->tid_disable_agg &= ~BIT(tid);
2124 /* In DQA-mode the queue isn't removed on agg termination */
2125 if (!iwl_mvm_is_dqa_supported(mvm))
2126 mvm_sta->tfd_queue_msk &= ~BIT(queue);
2127 mvm_sta->tid_disable_agg |= BIT(tid);
2130 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
2131 cmd.sta_id = mvm_sta->sta_id;
2132 cmd.add_modify = STA_MODE_MODIFY;
2133 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
2134 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
2135 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
2137 status = ADD_STA_SUCCESS;
2138 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,
2139 iwl_mvm_add_sta_cmd_size(mvm),
2144 switch (status & IWL_ADD_STA_STATUS_MASK) {
2145 case ADD_STA_SUCCESS:
2149 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
2150 start ? "start" : "stopp", status);
2157 const u8 tid_to_mac80211_ac[] = {
2166 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
2169 static const u8 tid_to_ucode_ac[] = {
2180 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2181 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2183 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2184 struct iwl_mvm_tid_data *tid_data;
2188 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
2191 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
2192 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
2193 mvmsta->tid_data[tid].state);
2197 lockdep_assert_held(&mvm->mutex);
2199 spin_lock_bh(&mvmsta->lock);
2201 /* possible race condition - we entered D0i3 while starting agg */
2202 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
2203 spin_unlock_bh(&mvmsta->lock);
2204 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
2208 spin_lock(&mvm->queue_info_lock);
2211 * Note the possible cases:
2212 * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed
2213 * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free
2214 * one and mark it as reserved
2215 * 3. In DQA mode, but no traffic yet on this TID: same treatment as in
2216 * non-DQA mode, since the TXQ hasn't yet been allocated
2218 txq_id = mvmsta->tid_data[tid].txq_id;
2219 if (iwl_mvm_is_dqa_supported(mvm) &&
2220 unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) {
2222 IWL_DEBUG_TX_QUEUES(mvm,
2223 "Can't start tid %d agg on shared queue!\n",
2226 } else if (!iwl_mvm_is_dqa_supported(mvm) ||
2227 mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) {
2228 txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id,
2229 mvm->first_agg_queue,
2230 mvm->last_agg_queue);
2233 IWL_ERR(mvm, "Failed to allocate agg queue\n");
2237 /* TXQ hasn't yet been enabled, so mark it only as reserved */
2238 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;
2241 spin_unlock(&mvm->queue_info_lock);
2243 IWL_DEBUG_TX_QUEUES(mvm,
2244 "AGG for tid %d will be on queue #%d\n",
2247 tid_data = &mvmsta->tid_data[tid];
2248 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
2249 tid_data->txq_id = txq_id;
2250 *ssn = tid_data->ssn;
2252 IWL_DEBUG_TX_QUEUES(mvm,
2253 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
2254 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
2255 tid_data->next_reclaimed);
2257 if (tid_data->ssn == tid_data->next_reclaimed) {
2258 tid_data->state = IWL_AGG_STARTING;
2259 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2261 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
2268 spin_unlock(&mvm->queue_info_lock);
2270 spin_unlock_bh(&mvmsta->lock);
2275 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2276 struct ieee80211_sta *sta, u16 tid, u8 buf_size,
2279 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2280 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2281 unsigned int wdg_timeout =
2282 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
2284 bool alloc_queue = true;
2285 enum iwl_mvm_queue_status queue_status;
2288 struct iwl_trans_txq_scd_cfg cfg = {
2289 .sta_id = mvmsta->sta_id,
2291 .frame_limit = buf_size,
2295 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
2296 != IWL_MAX_TID_COUNT);
2298 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2300 spin_lock_bh(&mvmsta->lock);
2301 ssn = tid_data->ssn;
2302 queue = tid_data->txq_id;
2303 tid_data->state = IWL_AGG_ON;
2304 mvmsta->agg_tids |= BIT(tid);
2305 tid_data->ssn = 0xffff;
2306 tid_data->amsdu_in_ampdu_allowed = amsdu;
2307 spin_unlock_bh(&mvmsta->lock);
2309 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
2311 spin_lock_bh(&mvm->queue_info_lock);
2312 queue_status = mvm->queue_info[queue].status;
2313 spin_unlock_bh(&mvm->queue_info_lock);
2315 /* In DQA mode, the existing queue might need to be reconfigured */
2316 if (iwl_mvm_is_dqa_supported(mvm)) {
2317 /* Maybe there is no need to even alloc a queue... */
2318 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)
2319 alloc_queue = false;
2322 * Only reconfig the SCD for the queue if the window size has
2323 * changed from current (become smaller)
2325 if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) {
2327 * If reconfiguring an existing queue, it first must be
2330 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
2334 "Error draining queue before reconfig\n");
2338 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,
2339 mvmsta->sta_id, tid,
2343 "Error reconfiguring TXQ #%d\n", queue);
2350 iwl_mvm_enable_txq(mvm, queue,
2351 vif->hw_queue[tid_to_mac80211_ac[tid]], ssn,
2354 /* Send ADD_STA command to enable aggs only if the queue isn't shared */
2355 if (queue_status != IWL_MVM_QUEUE_SHARED) {
2356 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
2361 /* No need to mark as reserved */
2362 spin_lock_bh(&mvm->queue_info_lock);
2363 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;
2364 spin_unlock_bh(&mvm->queue_info_lock);
2367 * Even though in theory the peer could have different
2368 * aggregation reorder buffer sizes for different sessions,
2369 * our ucode doesn't allow for that and has a global limit
2370 * for each station. Therefore, use the minimum of all the
2371 * aggregation sessions and our default value.
2373 mvmsta->max_agg_bufsize =
2374 min(mvmsta->max_agg_bufsize, buf_size);
2375 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
2377 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
2380 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
2383 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2384 struct ieee80211_sta *sta, u16 tid)
2386 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2387 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2392 * If mac80211 is cleaning its state, then say that we finished since
2393 * our state has been cleared anyway.
2395 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2396 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2400 spin_lock_bh(&mvmsta->lock);
2402 txq_id = tid_data->txq_id;
2404 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
2405 mvmsta->sta_id, tid, txq_id, tid_data->state);
2407 mvmsta->agg_tids &= ~BIT(tid);
2409 spin_lock_bh(&mvm->queue_info_lock);
2411 * The TXQ is marked as reserved only if no traffic came through yet
2412 * This means no traffic has been sent on this TID (agg'd or not), so
2413 * we no longer have use for the queue. Since it hasn't even been
2414 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2417 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2418 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
2420 spin_unlock_bh(&mvm->queue_info_lock);
2422 switch (tid_data->state) {
2424 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
2426 IWL_DEBUG_TX_QUEUES(mvm,
2427 "ssn = %d, next_recl = %d\n",
2428 tid_data->ssn, tid_data->next_reclaimed);
2430 /* There are still packets for this RA / TID in the HW */
2431 if (tid_data->ssn != tid_data->next_reclaimed) {
2432 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
2437 tid_data->ssn = 0xffff;
2438 tid_data->state = IWL_AGG_OFF;
2439 spin_unlock_bh(&mvmsta->lock);
2441 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2443 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2445 if (!iwl_mvm_is_dqa_supported(mvm)) {
2446 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2448 iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0);
2451 case IWL_AGG_STARTING:
2452 case IWL_EMPTYING_HW_QUEUE_ADDBA:
2454 * The agg session has been stopped before it was set up. This
2455 * can happen when the AddBA timer times out for example.
2458 /* No barriers since we are under mutex */
2459 lockdep_assert_held(&mvm->mutex);
2461 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2462 tid_data->state = IWL_AGG_OFF;
2467 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
2468 mvmsta->sta_id, tid, tid_data->state);
2470 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
2474 spin_unlock_bh(&mvmsta->lock);
2479 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2480 struct ieee80211_sta *sta, u16 tid)
2482 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2483 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2485 enum iwl_mvm_agg_state old_state;
2488 * First set the agg state to OFF to avoid calling
2489 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
2491 spin_lock_bh(&mvmsta->lock);
2492 txq_id = tid_data->txq_id;
2493 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
2494 mvmsta->sta_id, tid, txq_id, tid_data->state);
2495 old_state = tid_data->state;
2496 tid_data->state = IWL_AGG_OFF;
2497 mvmsta->agg_tids &= ~BIT(tid);
2498 spin_unlock_bh(&mvmsta->lock);
2500 spin_lock_bh(&mvm->queue_info_lock);
2502 * The TXQ is marked as reserved only if no traffic came through yet
2503 * This means no traffic has been sent on this TID (agg'd or not), so
2504 * we no longer have use for the queue. Since it hasn't even been
2505 * allocated through iwl_mvm_enable_txq, so we can just mark it back as
2508 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
2509 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
2510 spin_unlock_bh(&mvm->queue_info_lock);
2512 if (old_state >= IWL_AGG_ON) {
2513 iwl_mvm_drain_sta(mvm, mvmsta, true);
2514 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0))
2515 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
2516 iwl_trans_wait_tx_queue_empty(mvm->trans,
2517 mvmsta->tfd_queue_msk);
2518 iwl_mvm_drain_sta(mvm, mvmsta, false);
2520 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
2522 if (!iwl_mvm_is_dqa_supported(mvm)) {
2523 int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]];
2525 iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue,
2533 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
2535 int i, max = -1, max_offs = -1;
2537 lockdep_assert_held(&mvm->mutex);
2539 /* Pick the unused key offset with the highest 'deleted'
2540 * counter. Every time a key is deleted, all the counters
2541 * are incremented and the one that was just deleted is
2542 * reset to zero. Thus, the highest counter is the one
2543 * that was deleted longest ago. Pick that one.
2545 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2546 if (test_bit(i, mvm->fw_key_table))
2548 if (mvm->fw_key_deleted[i] > max) {
2549 max = mvm->fw_key_deleted[i];
2555 return STA_KEY_IDX_INVALID;
2560 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,
2561 struct ieee80211_vif *vif,
2562 struct ieee80211_sta *sta)
2564 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2567 return iwl_mvm_sta_from_mac80211(sta);
2570 * The device expects GTKs for station interfaces to be
2571 * installed as GTKs for the AP station. If we have no
2572 * station ID, then use AP's station ID.
2574 if (vif->type == NL80211_IFTYPE_STATION &&
2575 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2576 u8 sta_id = mvmvif->ap_sta_id;
2578 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
2579 lockdep_is_held(&mvm->mutex));
2582 * It is possible that the 'sta' parameter is NULL,
2583 * for example when a GTK is removed - the sta_id will then
2584 * be the AP ID, and no station was passed by mac80211.
2586 if (IS_ERR_OR_NULL(sta))
2589 return iwl_mvm_sta_from_mac80211(sta);
2595 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
2596 struct iwl_mvm_sta *mvm_sta,
2597 struct ieee80211_key_conf *keyconf, bool mcast,
2598 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,
2601 struct iwl_mvm_add_sta_key_cmd cmd = {};
2607 u8 sta_id = mvm_sta->sta_id;
2609 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2610 STA_KEY_FLG_KEYID_MSK;
2611 key_flags = cpu_to_le16(keyidx);
2612 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
2614 switch (keyconf->cipher) {
2615 case WLAN_CIPHER_SUITE_TKIP:
2616 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
2617 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
2618 for (i = 0; i < 5; i++)
2619 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
2620 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2622 case WLAN_CIPHER_SUITE_CCMP:
2623 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
2624 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2626 case WLAN_CIPHER_SUITE_WEP104:
2627 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
2629 case WLAN_CIPHER_SUITE_WEP40:
2630 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
2631 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
2633 case WLAN_CIPHER_SUITE_GCMP_256:
2634 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);
2636 case WLAN_CIPHER_SUITE_GCMP:
2637 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);
2638 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2641 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
2642 memcpy(cmd.key, keyconf->key, keyconf->keylen);
2646 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2648 cmd.key_offset = key_offset;
2649 cmd.key_flags = key_flags;
2650 cmd.sta_id = sta_id;
2652 status = ADD_STA_SUCCESS;
2653 if (cmd_flags & CMD_ASYNC)
2654 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
2657 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2661 case ADD_STA_SUCCESS:
2662 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
2666 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
2673 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
2674 struct ieee80211_key_conf *keyconf,
2675 u8 sta_id, bool remove_key)
2677 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
2679 /* verify the key details match the required command's expectations */
2680 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
2681 (keyconf->keyidx != 4 && keyconf->keyidx != 5) ||
2682 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
2683 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&
2684 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))
2687 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&
2688 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))
2691 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
2692 igtk_cmd.sta_id = cpu_to_le32(sta_id);
2695 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
2697 struct ieee80211_key_seq seq;
2700 switch (keyconf->cipher) {
2701 case WLAN_CIPHER_SUITE_AES_CMAC:
2702 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);
2704 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2705 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2706 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);
2712 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);
2713 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2714 igtk_cmd.ctrl_flags |=
2715 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);
2716 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2717 pn = seq.aes_cmac.pn;
2718 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
2719 ((u64) pn[4] << 8) |
2720 ((u64) pn[3] << 16) |
2721 ((u64) pn[2] << 24) |
2722 ((u64) pn[1] << 32) |
2723 ((u64) pn[0] << 40));
2726 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
2727 remove_key ? "removing" : "installing",
2730 if (!iwl_mvm_has_new_rx_api(mvm)) {
2731 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {
2732 .ctrl_flags = igtk_cmd.ctrl_flags,
2733 .key_id = igtk_cmd.key_id,
2734 .sta_id = igtk_cmd.sta_id,
2735 .receive_seq_cnt = igtk_cmd.receive_seq_cnt
2738 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,
2739 ARRAY_SIZE(igtk_cmd_v1.igtk));
2740 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
2741 sizeof(igtk_cmd_v1), &igtk_cmd_v1);
2743 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
2744 sizeof(igtk_cmd), &igtk_cmd);
2748 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
2749 struct ieee80211_vif *vif,
2750 struct ieee80211_sta *sta)
2752 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2757 if (vif->type == NL80211_IFTYPE_STATION &&
2758 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2759 u8 sta_id = mvmvif->ap_sta_id;
2760 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2761 lockdep_is_held(&mvm->mutex));
2769 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2770 struct ieee80211_vif *vif,
2771 struct ieee80211_sta *sta,
2772 struct ieee80211_key_conf *keyconf,
2776 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2779 struct ieee80211_key_seq seq;
2782 switch (keyconf->cipher) {
2783 case WLAN_CIPHER_SUITE_TKIP:
2784 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
2785 /* get phase 1 key from mac80211 */
2786 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
2787 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
2788 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
2789 seq.tkip.iv32, p1k, 0, key_offset);
2791 case WLAN_CIPHER_SUITE_CCMP:
2792 case WLAN_CIPHER_SUITE_WEP40:
2793 case WLAN_CIPHER_SUITE_WEP104:
2794 case WLAN_CIPHER_SUITE_GCMP:
2795 case WLAN_CIPHER_SUITE_GCMP_256:
2796 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
2797 0, NULL, 0, key_offset);
2800 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
2801 0, NULL, 0, key_offset);
2807 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
2808 struct ieee80211_key_conf *keyconf,
2811 struct iwl_mvm_add_sta_key_cmd cmd = {};
2816 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
2817 STA_KEY_FLG_KEYID_MSK);
2818 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
2819 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
2822 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
2824 cmd.key_flags = key_flags;
2825 cmd.key_offset = keyconf->hw_key_idx;
2826 cmd.sta_id = sta_id;
2828 status = ADD_STA_SUCCESS;
2829 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
2833 case ADD_STA_SUCCESS:
2834 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
2838 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
2845 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
2846 struct ieee80211_vif *vif,
2847 struct ieee80211_sta *sta,
2848 struct ieee80211_key_conf *keyconf,
2851 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
2852 struct iwl_mvm_sta *mvm_sta;
2855 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
2857 lockdep_assert_held(&mvm->mutex);
2859 /* Get the station id from the mvm local station table */
2860 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2862 IWL_ERR(mvm, "Failed to find station\n");
2865 sta_id = mvm_sta->sta_id;
2867 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2868 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2869 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
2870 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
2875 * It is possible that the 'sta' parameter is NULL, and thus
2876 * there is a need to retrieve the sta from the local station table.
2879 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
2880 lockdep_is_held(&mvm->mutex));
2881 if (IS_ERR_OR_NULL(sta)) {
2882 IWL_ERR(mvm, "Invalid station id\n");
2887 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
2890 /* If the key_offset is not pre-assigned, we need to find a
2891 * new offset to use. In normal cases, the offset is not
2892 * pre-assigned, but during HW_RESTART we want to reuse the
2893 * same indices, so we pass them when this function is called.
2895 * In D3 entry, we need to hardcoded the indices (because the
2896 * firmware hardcodes the PTK offset to 0). In this case, we
2897 * need to make sure we don't overwrite the hw_key_idx in the
2898 * keyconf structure, because otherwise we cannot configure
2899 * the original ones back when resuming.
2901 if (key_offset == STA_KEY_IDX_INVALID) {
2902 key_offset = iwl_mvm_set_fw_key_idx(mvm);
2903 if (key_offset == STA_KEY_IDX_INVALID)
2905 keyconf->hw_key_idx = key_offset;
2908 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
2913 * For WEP, the same key is used for multicast and unicast. Upload it
2914 * again, using the same key offset, and now pointing the other one
2915 * to the same key slot (offset).
2916 * If this fails, remove the original as well.
2918 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2919 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
2920 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
2921 key_offset, !mcast);
2923 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
2928 __set_bit(key_offset, mvm->fw_key_table);
2931 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
2932 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
2933 sta ? sta->addr : zero_addr, ret);
2937 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
2938 struct ieee80211_vif *vif,
2939 struct ieee80211_sta *sta,
2940 struct ieee80211_key_conf *keyconf)
2942 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
2943 struct iwl_mvm_sta *mvm_sta;
2944 u8 sta_id = IWL_MVM_STATION_COUNT;
2947 lockdep_assert_held(&mvm->mutex);
2949 /* Get the station from the mvm local station table */
2950 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
2952 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
2953 keyconf->keyidx, sta_id);
2955 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2956 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2957 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2958 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
2960 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
2961 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
2962 keyconf->hw_key_idx);
2966 /* track which key was deleted last */
2967 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
2968 if (mvm->fw_key_deleted[i] < U8_MAX)
2969 mvm->fw_key_deleted[i]++;
2971 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
2974 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
2978 sta_id = mvm_sta->sta_id;
2980 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
2984 /* delete WEP key twice to get rid of (now useless) offset */
2985 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2986 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
2987 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
2992 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
2993 struct ieee80211_vif *vif,
2994 struct ieee80211_key_conf *keyconf,
2995 struct ieee80211_sta *sta, u32 iv32,
2998 struct iwl_mvm_sta *mvm_sta;
2999 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
3003 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
3004 if (WARN_ON_ONCE(!mvm_sta))
3006 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
3007 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx);
3013 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
3014 struct ieee80211_sta *sta)
3016 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3017 struct iwl_mvm_add_sta_cmd cmd = {
3018 .add_modify = STA_MODE_MODIFY,
3019 .sta_id = mvmsta->sta_id,
3020 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
3021 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3025 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3026 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3028 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3031 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
3032 struct ieee80211_sta *sta,
3033 enum ieee80211_frame_release_type reason,
3034 u16 cnt, u16 tids, bool more_data,
3035 bool single_sta_queue)
3037 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3038 struct iwl_mvm_add_sta_cmd cmd = {
3039 .add_modify = STA_MODE_MODIFY,
3040 .sta_id = mvmsta->sta_id,
3041 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
3042 .sleep_tx_count = cpu_to_le16(cnt),
3043 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3046 unsigned long _tids = tids;
3048 /* convert TIDs to ACs - we don't support TSPEC so that's OK
3049 * Note that this field is reserved and unused by firmware not
3050 * supporting GO uAPSD, so it's safe to always do this.
3052 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
3053 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
3055 /* If we're releasing frames from aggregation or dqa queues then check
3056 * if all the queues that we're releasing frames from, combined, have:
3057 * - more frames than the service period, in which case more_data
3059 * - fewer than 'cnt' frames, in which case we need to adjust the
3060 * firmware command (but do that unconditionally)
3062 if (single_sta_queue) {
3063 int remaining = cnt;
3066 spin_lock_bh(&mvmsta->lock);
3067 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
3068 struct iwl_mvm_tid_data *tid_data;
3071 tid_data = &mvmsta->tid_data[tid];
3072 if (WARN(!iwl_mvm_is_dqa_supported(mvm) &&
3073 tid_data->state != IWL_AGG_ON &&
3074 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
3075 "TID %d state is %d\n",
3076 tid, tid_data->state)) {
3077 spin_unlock_bh(&mvmsta->lock);
3078 ieee80211_sta_eosp(sta);
3082 n_queued = iwl_mvm_tid_queued(tid_data);
3083 if (n_queued > remaining) {
3088 remaining -= n_queued;
3090 sleep_tx_count = cnt - remaining;
3091 if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
3092 mvmsta->sleep_tx_count = sleep_tx_count;
3093 spin_unlock_bh(&mvmsta->lock);
3095 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);
3096 if (WARN_ON(cnt - remaining == 0)) {
3097 ieee80211_sta_eosp(sta);
3102 /* Note: this is ignored by firmware not supporting GO uAPSD */
3104 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
3106 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
3107 mvmsta->next_status_eosp = true;
3108 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
3110 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
3113 /* block the Tx queues until the FW updated the sleep Tx count */
3114 iwl_trans_block_txq_ptrs(mvm->trans, true);
3116 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,
3117 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK,
3118 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3120 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3123 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
3124 struct iwl_rx_cmd_buffer *rxb)
3126 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3127 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
3128 struct ieee80211_sta *sta;
3129 u32 sta_id = le32_to_cpu(notif->sta_id);
3131 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
3135 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
3136 if (!IS_ERR_OR_NULL(sta))
3137 ieee80211_sta_eosp(sta);
3141 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
3142 struct iwl_mvm_sta *mvmsta, bool disable)
3144 struct iwl_mvm_add_sta_cmd cmd = {
3145 .add_modify = STA_MODE_MODIFY,
3146 .sta_id = mvmsta->sta_id,
3147 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
3148 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
3149 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
3153 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
3154 iwl_mvm_add_sta_cmd_size(mvm), &cmd);
3156 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
3159 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
3160 struct ieee80211_sta *sta,
3163 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3165 spin_lock_bh(&mvm_sta->lock);
3167 if (mvm_sta->disable_tx == disable) {
3168 spin_unlock_bh(&mvm_sta->lock);
3172 mvm_sta->disable_tx = disable;
3175 * Tell mac80211 to start/stop queuing tx for this station,
3176 * but don't stop queuing if there are still pending frames
3179 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
3180 ieee80211_sta_block_awake(mvm->hw, sta, disable);
3182 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
3184 spin_unlock_bh(&mvm_sta->lock);
3187 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
3188 struct iwl_mvm_vif *mvmvif,
3191 struct ieee80211_sta *sta;
3192 struct iwl_mvm_sta *mvm_sta;
3195 lockdep_assert_held(&mvm->mutex);
3197 /* Block/unblock all the stations of the given mvmvif */
3198 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3199 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3200 lockdep_is_held(&mvm->mutex));
3201 if (IS_ERR_OR_NULL(sta))
3204 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3205 if (mvm_sta->mac_id_n_color !=
3206 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
3209 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
3213 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
3215 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3216 struct iwl_mvm_sta *mvmsta;
3220 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
3222 if (!WARN_ON(!mvmsta))
3223 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);