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 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <net/mac80211.h>
71 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm,
72 enum nl80211_iftype iftype)
77 BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32);
78 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
80 lockdep_assert_held(&mvm->mutex);
82 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
83 if (iftype != NL80211_IFTYPE_STATION)
84 reserved_ids = BIT(0);
86 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
87 for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) {
88 if (BIT(sta_id) & reserved_ids)
91 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
92 lockdep_is_held(&mvm->mutex)))
95 return IWL_MVM_STATION_COUNT;
98 /* send station add/update command to firmware */
99 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
102 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
103 struct iwl_mvm_add_sta_cmd add_sta_cmd = {
104 .sta_id = mvm_sta->sta_id,
105 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
106 .add_modify = update ? 1 : 0,
107 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
108 STA_FLG_MIMO_EN_MSK),
112 u32 agg_size = 0, mpdu_dens = 0;
115 add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
116 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
119 switch (sta->bandwidth) {
120 case IEEE80211_STA_RX_BW_160:
121 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
123 case IEEE80211_STA_RX_BW_80:
124 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
126 case IEEE80211_STA_RX_BW_40:
127 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
129 case IEEE80211_STA_RX_BW_20:
130 if (sta->ht_cap.ht_supported)
131 add_sta_cmd.station_flags |=
132 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
136 switch (sta->rx_nss) {
138 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
141 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
144 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
148 switch (sta->smps_mode) {
149 case IEEE80211_SMPS_AUTOMATIC:
150 case IEEE80211_SMPS_NUM_MODES:
153 case IEEE80211_SMPS_STATIC:
155 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
156 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
158 case IEEE80211_SMPS_DYNAMIC:
159 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
161 case IEEE80211_SMPS_OFF:
166 if (sta->ht_cap.ht_supported) {
167 add_sta_cmd.station_flags_msk |=
168 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
169 STA_FLG_AGG_MPDU_DENS_MSK);
171 mpdu_dens = sta->ht_cap.ampdu_density;
174 if (sta->vht_cap.vht_supported) {
175 agg_size = sta->vht_cap.cap &
176 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
178 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
179 } else if (sta->ht_cap.ht_supported) {
180 agg_size = sta->ht_cap.ampdu_factor;
183 add_sta_cmd.station_flags |=
184 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
185 add_sta_cmd.station_flags |=
186 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
188 status = ADD_STA_SUCCESS;
189 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd),
190 &add_sta_cmd, &status);
195 case ADD_STA_SUCCESS:
196 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
200 IWL_ERR(mvm, "ADD_STA failed\n");
207 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
208 struct ieee80211_vif *vif,
209 struct ieee80211_sta *sta)
211 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
212 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
215 lockdep_assert_held(&mvm->mutex);
217 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
218 sta_id = iwl_mvm_find_free_sta_id(mvm,
219 ieee80211_vif_type_p2p(vif));
221 sta_id = mvm_sta->sta_id;
223 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
226 spin_lock_init(&mvm_sta->lock);
228 mvm_sta->sta_id = sta_id;
229 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
232 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
233 mvm_sta->tx_protection = 0;
234 mvm_sta->tt_tx_protection = false;
236 /* HW restart, don't assume the memory has been zeroed */
237 atomic_set(&mvm->pending_frames[sta_id], 0);
238 mvm_sta->tid_disable_agg = 0;
239 mvm_sta->tfd_queue_msk = 0;
240 for (i = 0; i < IEEE80211_NUM_ACS; i++)
241 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
242 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
244 /* for HW restart - reset everything but the sequence number */
245 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
246 u16 seq = mvm_sta->tid_data[i].seq_number;
247 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
248 mvm_sta->tid_data[i].seq_number = seq;
251 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
255 if (vif->type == NL80211_IFTYPE_STATION) {
257 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
258 mvmvif->ap_sta_id = sta_id;
260 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
264 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
269 int iwl_mvm_update_sta(struct iwl_mvm *mvm,
270 struct ieee80211_vif *vif,
271 struct ieee80211_sta *sta)
273 return iwl_mvm_sta_send_to_fw(mvm, sta, true);
276 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
279 struct iwl_mvm_add_sta_cmd cmd = {};
283 lockdep_assert_held(&mvm->mutex);
285 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
286 cmd.sta_id = mvmsta->sta_id;
287 cmd.add_modify = STA_MODE_MODIFY;
288 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
289 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
291 status = ADD_STA_SUCCESS;
292 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
298 case ADD_STA_SUCCESS:
299 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
304 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
313 * Remove a station from the FW table. Before sending the command to remove
314 * the station validate that the station is indeed known to the driver (sanity
317 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
319 struct ieee80211_sta *sta;
320 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
325 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
326 lockdep_is_held(&mvm->mutex));
328 /* Note: internal stations are marked as error values */
330 IWL_ERR(mvm, "Invalid station id\n");
334 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
335 sizeof(rm_sta_cmd), &rm_sta_cmd);
337 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
344 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
346 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
350 * The mutex is needed because of the SYNC cmd, but not only: if the
351 * work would run concurrently with iwl_mvm_rm_sta, it would run before
352 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
353 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
356 mutex_lock(&mvm->mutex);
358 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
360 struct ieee80211_sta *sta =
361 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
362 lockdep_is_held(&mvm->mutex));
365 * This station is in use or RCU-removed; the latter happens in
366 * managed mode, where mac80211 removes the station before we
367 * can remove it from firmware (we can only do that after the
368 * MAC is marked unassociated), and possibly while the deauth
369 * frame to disconnect from the AP is still queued. Then, the
370 * station pointer is -ENOENT when the last skb is reclaimed.
372 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
375 if (PTR_ERR(sta) == -EINVAL) {
376 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
382 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
387 WARN_ON(PTR_ERR(sta) != -EBUSY);
388 /* This station was removed and we waited until it got drained,
389 * we can now proceed and remove it.
391 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
394 "Couldn't remove sta %d after it was drained\n",
398 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
399 clear_bit(sta_id, mvm->sta_drained);
402 mutex_unlock(&mvm->mutex);
405 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
406 struct ieee80211_vif *vif,
407 struct ieee80211_sta *sta)
409 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
410 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
413 lockdep_assert_held(&mvm->mutex);
415 if (vif->type == NL80211_IFTYPE_STATION &&
416 mvmvif->ap_sta_id == mvm_sta->sta_id) {
417 /* flush its queues here since we are freeing mvm_sta */
418 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
420 /* if we are associated - we can't remove the AP STA now */
421 if (vif->bss_conf.assoc)
424 /* unassoc - go ahead - remove the AP STA now */
425 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
427 /* clear d0i3_ap_sta_id if no longer relevant */
428 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
429 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
433 * Make sure that the tx response code sees the station as -EBUSY and
434 * calls the drain worker.
436 spin_lock_bh(&mvm_sta->lock);
438 * There are frames pending on the AC queues for this station.
439 * We need to wait until all the frames are drained...
441 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
442 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
444 spin_unlock_bh(&mvm_sta->lock);
445 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
447 spin_unlock_bh(&mvm_sta->lock);
448 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
449 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
455 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
456 struct ieee80211_vif *vif,
459 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
461 lockdep_assert_held(&mvm->mutex);
463 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
467 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta,
468 u32 qmask, enum nl80211_iftype iftype)
470 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
471 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
472 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
476 sta->tfd_queue_msk = qmask;
478 /* put a non-NULL value so iterating over the stations won't stop */
479 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
483 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
485 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
486 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
487 sta->sta_id = IWL_MVM_STATION_COUNT;
490 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
491 struct iwl_mvm_int_sta *sta,
493 u16 mac_id, u16 color)
495 struct iwl_mvm_add_sta_cmd cmd;
499 lockdep_assert_held(&mvm->mutex);
501 memset(&cmd, 0, sizeof(cmd));
502 cmd.sta_id = sta->sta_id;
503 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
506 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
509 memcpy(cmd.addr, addr, ETH_ALEN);
511 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
517 case ADD_STA_SUCCESS:
518 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
522 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
529 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
533 lockdep_assert_held(&mvm->mutex);
535 /* Map Aux queue to fifo - needs to happen before adding Aux station */
536 iwl_trans_ac_txq_enable(mvm->trans, mvm->aux_queue,
537 IWL_MVM_TX_FIFO_MCAST);
539 /* Allocate aux station and assign to it the aux queue */
540 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
541 NL80211_IFTYPE_UNSPECIFIED);
545 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
549 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
554 * Send the add station command for the vif's broadcast station.
555 * Assumes that the station was already allocated.
557 * @mvm: the mvm component
558 * @vif: the interface to which the broadcast station is added
559 * @bsta: the broadcast station to add.
561 int iwl_mvm_send_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
562 struct iwl_mvm_int_sta *bsta)
564 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
565 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
566 const u8 *baddr = _baddr;
568 lockdep_assert_held(&mvm->mutex);
570 if (vif->type == NL80211_IFTYPE_ADHOC)
571 baddr = vif->bss_conf.bssid;
573 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
576 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
577 mvmvif->id, mvmvif->color);
580 /* Send the FW a request to remove the station from it's internal data
581 * structures, but DO NOT remove the entry from the local data structures. */
582 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm,
583 struct iwl_mvm_int_sta *bsta)
587 lockdep_assert_held(&mvm->mutex);
589 ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
591 IWL_WARN(mvm, "Failed sending remove station\n");
595 /* Allocate a new station entry for the broadcast station to the given vif,
596 * and send it to the FW.
597 * Note that each P2P mac should have its own broadcast station.
599 * @mvm: the mvm component
600 * @vif: the interface to which the broadcast station is added
601 * @bsta: the broadcast station to add. */
602 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
603 struct iwl_mvm_int_sta *bsta)
605 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
606 static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
610 lockdep_assert_held(&mvm->mutex);
612 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
613 ret = iwl_mvm_allocate_int_sta(mvm, bsta, qmask,
614 ieee80211_vif_type_p2p(vif));
618 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
619 mvmvif->id, mvmvif->color);
622 iwl_mvm_dealloc_int_sta(mvm, bsta);
627 * Send the FW a request to remove the station from it's internal data
628 * structures, and in addition remove it from the local data structure.
630 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *bsta)
634 lockdep_assert_held(&mvm->mutex);
636 ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
640 iwl_mvm_dealloc_int_sta(mvm, bsta);
644 #define IWL_MAX_RX_BA_SESSIONS 16
646 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
647 int tid, u16 ssn, bool start)
649 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
650 struct iwl_mvm_add_sta_cmd cmd = {};
654 lockdep_assert_held(&mvm->mutex);
656 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
657 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
661 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
662 cmd.sta_id = mvm_sta->sta_id;
663 cmd.add_modify = STA_MODE_MODIFY;
665 cmd.add_immediate_ba_tid = (u8) tid;
666 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
668 cmd.remove_immediate_ba_tid = (u8) tid;
670 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
671 STA_MODIFY_REMOVE_BA_TID;
673 status = ADD_STA_SUCCESS;
674 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
680 case ADD_STA_SUCCESS:
681 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
682 start ? "start" : "stopp");
684 case ADD_STA_IMMEDIATE_BA_FAILURE:
685 IWL_WARN(mvm, "RX BA Session refused by fw\n");
690 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
691 start ? "start" : "stopp", status);
697 mvm->rx_ba_sessions++;
698 else if (mvm->rx_ba_sessions > 0)
699 /* check that restart flow didn't zero the counter */
700 mvm->rx_ba_sessions--;
706 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
707 int tid, u8 queue, bool start)
709 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
710 struct iwl_mvm_add_sta_cmd cmd = {};
714 lockdep_assert_held(&mvm->mutex);
717 mvm_sta->tfd_queue_msk |= BIT(queue);
718 mvm_sta->tid_disable_agg &= ~BIT(tid);
720 mvm_sta->tfd_queue_msk &= ~BIT(queue);
721 mvm_sta->tid_disable_agg |= BIT(tid);
724 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
725 cmd.sta_id = mvm_sta->sta_id;
726 cmd.add_modify = STA_MODE_MODIFY;
727 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
728 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
729 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
731 status = ADD_STA_SUCCESS;
732 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
738 case ADD_STA_SUCCESS:
742 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
743 start ? "start" : "stopp", status);
750 const u8 tid_to_mac80211_ac[] = {
761 static const u8 tid_to_ucode_ac[] = {
772 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
773 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
775 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
776 struct iwl_mvm_tid_data *tid_data;
779 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
782 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
783 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
784 mvmsta->tid_data[tid].state);
788 lockdep_assert_held(&mvm->mutex);
790 for (txq_id = mvm->first_agg_queue;
791 txq_id <= mvm->last_agg_queue; txq_id++)
792 if (mvm->queue_to_mac80211[txq_id] ==
793 IWL_INVALID_MAC80211_QUEUE)
796 if (txq_id > mvm->last_agg_queue) {
797 IWL_ERR(mvm, "Failed to allocate agg queue\n");
801 spin_lock_bh(&mvmsta->lock);
803 /* possible race condition - we entered D0i3 while starting agg */
804 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
805 spin_unlock_bh(&mvmsta->lock);
806 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
810 /* the new tx queue is still connected to the same mac80211 queue */
811 mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]];
813 tid_data = &mvmsta->tid_data[tid];
814 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
815 tid_data->txq_id = txq_id;
816 *ssn = tid_data->ssn;
818 IWL_DEBUG_TX_QUEUES(mvm,
819 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
820 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
821 tid_data->next_reclaimed);
823 if (tid_data->ssn == tid_data->next_reclaimed) {
824 tid_data->state = IWL_AGG_STARTING;
825 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
827 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
830 spin_unlock_bh(&mvmsta->lock);
835 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
836 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
838 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
839 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
840 int queue, fifo, ret;
843 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
845 spin_lock_bh(&mvmsta->lock);
847 queue = tid_data->txq_id;
848 tid_data->state = IWL_AGG_ON;
849 tid_data->ssn = 0xffff;
850 spin_unlock_bh(&mvmsta->lock);
852 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
854 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
858 iwl_trans_txq_enable(mvm->trans, queue, fifo, mvmsta->sta_id, tid,
862 * Even though in theory the peer could have different
863 * aggregation reorder buffer sizes for different sessions,
864 * our ucode doesn't allow for that and has a global limit
865 * for each station. Therefore, use the minimum of all the
866 * aggregation sessions and our default value.
868 mvmsta->max_agg_bufsize =
869 min(mvmsta->max_agg_bufsize, buf_size);
870 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
872 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
875 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
878 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
879 struct ieee80211_sta *sta, u16 tid)
881 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
882 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
888 * If mac80211 is cleaning its state, then say that we finished since
889 * our state has been cleared anyway.
891 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
892 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
896 spin_lock_bh(&mvmsta->lock);
898 txq_id = tid_data->txq_id;
900 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
901 mvmsta->sta_id, tid, txq_id, tid_data->state);
903 switch (tid_data->state) {
905 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
907 IWL_DEBUG_TX_QUEUES(mvm,
908 "ssn = %d, next_recl = %d\n",
909 tid_data->ssn, tid_data->next_reclaimed);
911 /* There are still packets for this RA / TID in the HW */
912 if (tid_data->ssn != tid_data->next_reclaimed) {
913 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
918 tid_data->ssn = 0xffff;
919 iwl_trans_txq_disable(mvm->trans, txq_id, true);
921 case IWL_AGG_STARTING:
922 case IWL_EMPTYING_HW_QUEUE_ADDBA:
924 * The agg session has been stopped before it was set up. This
925 * can happen when the AddBA timer times out for example.
928 /* No barriers since we are under mutex */
929 lockdep_assert_held(&mvm->mutex);
930 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
932 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
933 tid_data->state = IWL_AGG_OFF;
938 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
939 mvmsta->sta_id, tid, tid_data->state);
941 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
945 spin_unlock_bh(&mvmsta->lock);
950 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
951 struct ieee80211_sta *sta, u16 tid)
953 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
954 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
956 enum iwl_mvm_agg_state old_state;
959 * First set the agg state to OFF to avoid calling
960 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
962 spin_lock_bh(&mvmsta->lock);
963 txq_id = tid_data->txq_id;
964 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
965 mvmsta->sta_id, tid, txq_id, tid_data->state);
966 old_state = tid_data->state;
967 tid_data->state = IWL_AGG_OFF;
968 spin_unlock_bh(&mvmsta->lock);
970 if (old_state >= IWL_AGG_ON) {
971 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
972 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
974 iwl_trans_txq_disable(mvm->trans, tid_data->txq_id, true);
977 mvm->queue_to_mac80211[tid_data->txq_id] =
978 IWL_INVALID_MAC80211_QUEUE;
983 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
987 lockdep_assert_held(&mvm->mutex);
989 i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
991 if (i == STA_KEY_MAX_NUM)
992 return STA_KEY_IDX_INVALID;
994 __set_bit(i, mvm->fw_key_table);
999 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
1000 struct ieee80211_sta *sta)
1002 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1005 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1007 return mvm_sta->sta_id;
1011 * The device expects GTKs for station interfaces to be
1012 * installed as GTKs for the AP station. If we have no
1013 * station ID, then use AP's station ID.
1015 if (vif->type == NL80211_IFTYPE_STATION &&
1016 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
1017 return mvmvif->ap_sta_id;
1019 return IWL_MVM_STATION_COUNT;
1022 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
1023 struct iwl_mvm_sta *mvm_sta,
1024 struct ieee80211_key_conf *keyconf,
1025 u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
1028 struct iwl_mvm_add_sta_key_cmd cmd = {};
1034 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1035 STA_KEY_FLG_KEYID_MSK;
1036 key_flags = cpu_to_le16(keyidx);
1037 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
1039 switch (keyconf->cipher) {
1040 case WLAN_CIPHER_SUITE_TKIP:
1041 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
1042 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
1043 for (i = 0; i < 5; i++)
1044 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1045 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1047 case WLAN_CIPHER_SUITE_CCMP:
1048 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
1049 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1052 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
1053 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1056 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1057 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1059 cmd.key_offset = keyconf->hw_key_idx;
1060 cmd.key_flags = key_flags;
1061 cmd.sta_id = sta_id;
1063 status = ADD_STA_SUCCESS;
1064 if (cmd_flags & CMD_ASYNC)
1065 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
1068 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1072 case ADD_STA_SUCCESS:
1073 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1077 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1084 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1085 struct ieee80211_key_conf *keyconf,
1086 u8 sta_id, bool remove_key)
1088 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1090 /* verify the key details match the required command's expectations */
1091 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1092 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1093 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1096 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1097 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1100 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1102 struct ieee80211_key_seq seq;
1105 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1106 ieee80211_aes_cmac_calculate_k1_k2(keyconf,
1107 igtk_cmd.K1, igtk_cmd.K2);
1108 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1109 pn = seq.aes_cmac.pn;
1110 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1111 ((u64) pn[4] << 8) |
1112 ((u64) pn[3] << 16) |
1113 ((u64) pn[2] << 24) |
1114 ((u64) pn[1] << 32) |
1115 ((u64) pn[0] << 40));
1118 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1119 remove_key ? "removing" : "installing",
1122 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
1123 sizeof(igtk_cmd), &igtk_cmd);
1127 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1128 struct ieee80211_vif *vif,
1129 struct ieee80211_sta *sta)
1131 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1136 if (vif->type == NL80211_IFTYPE_STATION &&
1137 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1138 u8 sta_id = mvmvif->ap_sta_id;
1139 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1140 lockdep_is_held(&mvm->mutex));
1148 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1149 struct ieee80211_vif *vif,
1150 struct ieee80211_sta *sta,
1151 struct ieee80211_key_conf *keyconf,
1152 bool have_key_offset)
1154 struct iwl_mvm_sta *mvm_sta;
1157 struct ieee80211_key_seq seq;
1160 lockdep_assert_held(&mvm->mutex);
1162 /* Get the station id from the mvm local station table */
1163 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1164 if (sta_id == IWL_MVM_STATION_COUNT) {
1165 IWL_ERR(mvm, "Failed to find station id\n");
1169 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1170 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1175 * It is possible that the 'sta' parameter is NULL, and thus
1176 * there is a need to retrieve the sta from the local station table.
1179 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1180 lockdep_is_held(&mvm->mutex));
1181 if (IS_ERR_OR_NULL(sta)) {
1182 IWL_ERR(mvm, "Invalid station id\n");
1187 mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1188 if (WARN_ON_ONCE(mvm_sta->vif != vif))
1191 if (!have_key_offset) {
1193 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1194 * configure it there. As a result, this workaround exists to
1195 * let the caller set the key offset (hw_key_idx), see d3.c.
1197 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1198 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1202 switch (keyconf->cipher) {
1203 case WLAN_CIPHER_SUITE_TKIP:
1204 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1205 /* get phase 1 key from mac80211 */
1206 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1207 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1208 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1209 seq.tkip.iv32, p1k, 0);
1211 case WLAN_CIPHER_SUITE_CCMP:
1212 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1216 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf,
1217 sta_id, 0, NULL, 0);
1221 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1224 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1225 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1230 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1231 struct ieee80211_vif *vif,
1232 struct ieee80211_sta *sta,
1233 struct ieee80211_key_conf *keyconf)
1235 struct iwl_mvm_sta *mvm_sta;
1236 struct iwl_mvm_add_sta_key_cmd cmd = {};
1241 lockdep_assert_held(&mvm->mutex);
1243 /* Get the station id from the mvm local station table */
1244 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1246 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1247 keyconf->keyidx, sta_id);
1249 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1250 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1252 ret = __test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1254 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1255 keyconf->hw_key_idx);
1259 if (sta_id == IWL_MVM_STATION_COUNT) {
1260 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1265 * It is possible that the 'sta' parameter is NULL, and thus
1266 * there is a need to retrieve the sta from the local station table,
1267 * for example when a GTK is removed (where the sta_id will then be
1268 * the AP ID, and no station was passed by mac80211.)
1271 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1272 lockdep_is_held(&mvm->mutex));
1274 IWL_ERR(mvm, "Invalid station id\n");
1279 mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1280 if (WARN_ON_ONCE(mvm_sta->vif != vif))
1283 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1284 STA_KEY_FLG_KEYID_MSK);
1285 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1286 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1288 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1289 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1291 cmd.key_flags = key_flags;
1292 cmd.key_offset = keyconf->hw_key_idx;
1293 cmd.sta_id = sta_id;
1295 status = ADD_STA_SUCCESS;
1296 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1300 case ADD_STA_SUCCESS:
1301 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1305 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1312 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1313 struct ieee80211_vif *vif,
1314 struct ieee80211_key_conf *keyconf,
1315 struct ieee80211_sta *sta, u32 iv32,
1318 struct iwl_mvm_sta *mvm_sta;
1319 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1321 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
1327 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1328 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1334 mvm_sta = (void *)sta->drv_priv;
1335 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1336 iv32, phase1key, CMD_ASYNC);
1340 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1341 struct ieee80211_sta *sta)
1343 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1344 struct iwl_mvm_add_sta_cmd cmd = {
1345 .add_modify = STA_MODE_MODIFY,
1346 .sta_id = mvmsta->sta_id,
1347 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
1348 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1352 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1354 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1357 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1358 struct ieee80211_sta *sta,
1359 enum ieee80211_frame_release_type reason,
1360 u16 cnt, u16 tids, bool more_data,
1363 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1364 struct iwl_mvm_add_sta_cmd cmd = {
1365 .add_modify = STA_MODE_MODIFY,
1366 .sta_id = mvmsta->sta_id,
1367 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1368 .sleep_tx_count = cpu_to_le16(cnt),
1369 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1372 unsigned long _tids = tids;
1374 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1375 * Note that this field is reserved and unused by firmware not
1376 * supporting GO uAPSD, so it's safe to always do this.
1378 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
1379 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
1381 /* If we're releasing frames from aggregation queues then check if the
1382 * all queues combined that we're releasing frames from have
1383 * - more frames than the service period, in which case more_data
1385 * - fewer than 'cnt' frames, in which case we need to adjust the
1386 * firmware command (but do that unconditionally)
1389 int remaining = cnt;
1391 spin_lock_bh(&mvmsta->lock);
1392 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
1393 struct iwl_mvm_tid_data *tid_data;
1396 tid_data = &mvmsta->tid_data[tid];
1397 if (WARN(tid_data->state != IWL_AGG_ON &&
1398 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
1399 "TID %d state is %d\n",
1400 tid, tid_data->state)) {
1401 spin_unlock_bh(&mvmsta->lock);
1402 ieee80211_sta_eosp(sta);
1406 n_queued = iwl_mvm_tid_queued(tid_data);
1407 if (n_queued > remaining) {
1412 remaining -= n_queued;
1414 spin_unlock_bh(&mvmsta->lock);
1416 cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
1417 if (WARN_ON(cnt - remaining == 0)) {
1418 ieee80211_sta_eosp(sta);
1423 /* Note: this is ignored by firmware not supporting GO uAPSD */
1425 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
1427 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
1428 mvmsta->next_status_eosp = true;
1429 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
1431 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
1434 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1436 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1439 int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
1440 struct iwl_rx_cmd_buffer *rxb,
1441 struct iwl_device_cmd *cmd)
1443 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1444 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
1445 struct ieee80211_sta *sta;
1446 u32 sta_id = le32_to_cpu(notif->sta_id);
1448 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
1452 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1453 if (!IS_ERR_OR_NULL(sta))
1454 ieee80211_sta_eosp(sta);
1460 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
1461 struct iwl_mvm_sta *mvmsta, bool disable)
1463 struct iwl_mvm_add_sta_cmd cmd = {
1464 .add_modify = STA_MODE_MODIFY,
1465 .sta_id = mvmsta->sta_id,
1466 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
1467 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
1468 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1472 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX))
1475 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1477 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1480 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
1481 struct ieee80211_sta *sta,
1484 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1486 spin_lock_bh(&mvm_sta->lock);
1488 if (mvm_sta->disable_tx == disable) {
1489 spin_unlock_bh(&mvm_sta->lock);
1493 mvm_sta->disable_tx = disable;
1496 * Tell mac80211 to start/stop queueing tx for this station,
1497 * but don't stop queueing if there are still pending frames
1500 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
1501 ieee80211_sta_block_awake(mvm->hw, sta, disable);
1503 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
1505 spin_unlock_bh(&mvm_sta->lock);
1508 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
1509 struct iwl_mvm_vif *mvmvif,
1512 struct ieee80211_sta *sta;
1513 struct iwl_mvm_sta *mvm_sta;
1516 lockdep_assert_held(&mvm->mutex);
1518 /* Block/unblock all the stations of the given mvmvif */
1519 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1520 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1521 lockdep_is_held(&mvm->mutex));
1522 if (IS_ERR_OR_NULL(sta))
1525 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1526 if (mvm_sta->mac_id_n_color !=
1527 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
1530 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);