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
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58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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 static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
208 struct ieee80211_sta *sta)
210 unsigned long used_hw_queues;
211 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
214 lockdep_assert_held(&mvm->mutex);
216 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
218 /* Find available queues, and allocate them to the ACs */
219 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
220 u8 queue = find_first_zero_bit(&used_hw_queues,
221 mvm->first_agg_queue);
223 if (queue >= mvm->first_agg_queue) {
224 IWL_ERR(mvm, "Failed to allocate STA queue\n");
228 __set_bit(queue, &used_hw_queues);
229 mvmsta->hw_queue[ac] = queue;
232 /* Found a place for all queues - enable them */
233 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
234 iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
235 iwl_mvm_ac_to_tx_fifo[ac]);
236 mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
242 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
243 struct ieee80211_sta *sta)
245 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
246 unsigned long sta_msk;
249 lockdep_assert_held(&mvm->mutex);
251 /* disable the TDLS STA-specific queues */
252 sta_msk = mvmsta->tfd_queue_msk;
253 for_each_set_bit(i, &sta_msk, sizeof(sta_msk))
254 iwl_mvm_disable_txq(mvm, i);
257 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
258 struct ieee80211_vif *vif,
259 struct ieee80211_sta *sta)
261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
262 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
265 lockdep_assert_held(&mvm->mutex);
267 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
268 sta_id = iwl_mvm_find_free_sta_id(mvm,
269 ieee80211_vif_type_p2p(vif));
271 sta_id = mvm_sta->sta_id;
273 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
276 spin_lock_init(&mvm_sta->lock);
278 mvm_sta->sta_id = sta_id;
279 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
282 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
283 mvm_sta->tx_protection = 0;
284 mvm_sta->tt_tx_protection = false;
286 /* HW restart, don't assume the memory has been zeroed */
287 atomic_set(&mvm->pending_frames[sta_id], 0);
288 mvm_sta->tid_disable_agg = 0;
289 mvm_sta->tfd_queue_msk = 0;
291 /* allocate new queues for a TDLS station */
293 ret = iwl_mvm_tdls_sta_init(mvm, sta);
297 for (i = 0; i < IEEE80211_NUM_ACS; i++)
298 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
299 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
302 /* for HW restart - reset everything but the sequence number */
303 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
304 u16 seq = mvm_sta->tid_data[i].seq_number;
305 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
306 mvm_sta->tid_data[i].seq_number = seq;
308 mvm_sta->agg_tids = 0;
310 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
314 if (vif->type == NL80211_IFTYPE_STATION) {
316 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
317 mvmvif->ap_sta_id = sta_id;
319 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
323 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
328 iwl_mvm_tdls_sta_deinit(mvm, sta);
332 int iwl_mvm_update_sta(struct iwl_mvm *mvm,
333 struct ieee80211_vif *vif,
334 struct ieee80211_sta *sta)
336 return iwl_mvm_sta_send_to_fw(mvm, sta, true);
339 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
342 struct iwl_mvm_add_sta_cmd cmd = {};
346 lockdep_assert_held(&mvm->mutex);
348 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
349 cmd.sta_id = mvmsta->sta_id;
350 cmd.add_modify = STA_MODE_MODIFY;
351 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
352 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
354 status = ADD_STA_SUCCESS;
355 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
361 case ADD_STA_SUCCESS:
362 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
367 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
376 * Remove a station from the FW table. Before sending the command to remove
377 * the station validate that the station is indeed known to the driver (sanity
380 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
382 struct ieee80211_sta *sta;
383 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
388 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
389 lockdep_is_held(&mvm->mutex));
391 /* Note: internal stations are marked as error values */
393 IWL_ERR(mvm, "Invalid station id\n");
397 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
398 sizeof(rm_sta_cmd), &rm_sta_cmd);
400 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
407 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
409 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
413 * The mutex is needed because of the SYNC cmd, but not only: if the
414 * work would run concurrently with iwl_mvm_rm_sta, it would run before
415 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
416 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
419 mutex_lock(&mvm->mutex);
421 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
423 struct ieee80211_sta *sta =
424 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
425 lockdep_is_held(&mvm->mutex));
428 * This station is in use or RCU-removed; the latter happens in
429 * managed mode, where mac80211 removes the station before we
430 * can remove it from firmware (we can only do that after the
431 * MAC is marked unassociated), and possibly while the deauth
432 * frame to disconnect from the AP is still queued. Then, the
433 * station pointer is -ENOENT when the last skb is reclaimed.
435 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
438 if (PTR_ERR(sta) == -EINVAL) {
439 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
445 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
450 WARN_ON(PTR_ERR(sta) != -EBUSY);
451 /* This station was removed and we waited until it got drained,
452 * we can now proceed and remove it.
454 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
457 "Couldn't remove sta %d after it was drained\n",
461 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
462 clear_bit(sta_id, mvm->sta_drained);
464 if (mvm->tfd_drained[sta_id]) {
465 unsigned long i, msk = mvm->tfd_drained[sta_id];
467 for_each_set_bit(i, &msk, sizeof(msk))
468 iwl_mvm_disable_txq(mvm, i);
470 mvm->tfd_drained[sta_id] = 0;
471 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
476 mutex_unlock(&mvm->mutex);
479 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
480 struct ieee80211_vif *vif,
481 struct ieee80211_sta *sta)
483 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
484 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
487 lockdep_assert_held(&mvm->mutex);
489 if (vif->type == NL80211_IFTYPE_STATION &&
490 mvmvif->ap_sta_id == mvm_sta->sta_id) {
491 /* flush its queues here since we are freeing mvm_sta */
492 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
494 /* if we are associated - we can't remove the AP STA now */
495 if (vif->bss_conf.assoc)
498 /* unassoc - go ahead - remove the AP STA now */
499 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
501 /* clear d0i3_ap_sta_id if no longer relevant */
502 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
503 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
507 * This shouldn't happen - the TDLS channel switch should be canceled
508 * before the STA is removed.
510 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
511 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
512 cancel_delayed_work(&mvm->tdls_cs.dwork);
516 * Make sure that the tx response code sees the station as -EBUSY and
517 * calls the drain worker.
519 spin_lock_bh(&mvm_sta->lock);
521 * There are frames pending on the AC queues for this station.
522 * We need to wait until all the frames are drained...
524 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
525 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
527 spin_unlock_bh(&mvm_sta->lock);
529 /* disable TDLS sta queues on drain complete */
531 mvm->tfd_drained[mvm_sta->sta_id] =
532 mvm_sta->tfd_queue_msk;
533 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
537 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
539 spin_unlock_bh(&mvm_sta->lock);
542 iwl_mvm_tdls_sta_deinit(mvm, sta);
544 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
545 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
551 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
552 struct ieee80211_vif *vif,
555 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
557 lockdep_assert_held(&mvm->mutex);
559 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
563 static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
564 struct iwl_mvm_int_sta *sta,
565 u32 qmask, enum nl80211_iftype iftype)
567 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
568 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
569 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
573 sta->tfd_queue_msk = qmask;
575 /* put a non-NULL value so iterating over the stations won't stop */
576 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
580 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
581 struct iwl_mvm_int_sta *sta)
583 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
584 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
585 sta->sta_id = IWL_MVM_STATION_COUNT;
588 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
589 struct iwl_mvm_int_sta *sta,
591 u16 mac_id, u16 color)
593 struct iwl_mvm_add_sta_cmd cmd;
597 lockdep_assert_held(&mvm->mutex);
599 memset(&cmd, 0, sizeof(cmd));
600 cmd.sta_id = sta->sta_id;
601 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
604 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
607 memcpy(cmd.addr, addr, ETH_ALEN);
609 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
615 case ADD_STA_SUCCESS:
616 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
620 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
627 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
631 lockdep_assert_held(&mvm->mutex);
633 /* Map Aux queue to fifo - needs to happen before adding Aux station */
634 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue,
635 IWL_MVM_TX_FIFO_MCAST);
637 /* Allocate aux station and assign to it the aux queue */
638 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
639 NL80211_IFTYPE_UNSPECIFIED);
643 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
647 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
651 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
653 lockdep_assert_held(&mvm->mutex);
655 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
659 * Send the add station command for the vif's broadcast station.
660 * Assumes that the station was already allocated.
662 * @mvm: the mvm component
663 * @vif: the interface to which the broadcast station is added
664 * @bsta: the broadcast station to add.
666 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
668 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
669 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
670 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
671 const u8 *baddr = _baddr;
673 lockdep_assert_held(&mvm->mutex);
675 if (vif->type == NL80211_IFTYPE_ADHOC)
676 baddr = vif->bss_conf.bssid;
678 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
681 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
682 mvmvif->id, mvmvif->color);
685 /* Send the FW a request to remove the station from it's internal data
686 * structures, but DO NOT remove the entry from the local data structures. */
687 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
692 lockdep_assert_held(&mvm->mutex);
694 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
696 IWL_WARN(mvm, "Failed sending remove station\n");
700 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
702 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
705 lockdep_assert_held(&mvm->mutex);
707 qmask = iwl_mvm_mac_get_queues_mask(vif);
710 * The firmware defines the TFD queue mask to only be relevant
711 * for *unicast* queues, so the multicast (CAB) queue shouldn't
714 if (vif->type == NL80211_IFTYPE_AP)
715 qmask &= ~BIT(vif->cab_queue);
717 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
718 ieee80211_vif_type_p2p(vif));
721 /* Allocate a new station entry for the broadcast station to the given vif,
722 * and send it to the FW.
723 * Note that each P2P mac should have its own broadcast station.
725 * @mvm: the mvm component
726 * @vif: the interface to which the broadcast station is added
727 * @bsta: the broadcast station to add. */
728 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
731 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
734 lockdep_assert_held(&mvm->mutex);
736 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
740 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
743 iwl_mvm_dealloc_int_sta(mvm, bsta);
748 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
752 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
756 * Send the FW a request to remove the station from it's internal data
757 * structures, and in addition remove it from the local data structure.
759 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
763 lockdep_assert_held(&mvm->mutex);
765 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
767 iwl_mvm_dealloc_bcast_sta(mvm, vif);
772 #define IWL_MAX_RX_BA_SESSIONS 16
774 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
775 int tid, u16 ssn, bool start)
777 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
778 struct iwl_mvm_add_sta_cmd cmd = {};
782 lockdep_assert_held(&mvm->mutex);
784 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
785 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
789 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
790 cmd.sta_id = mvm_sta->sta_id;
791 cmd.add_modify = STA_MODE_MODIFY;
793 cmd.add_immediate_ba_tid = (u8) tid;
794 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
796 cmd.remove_immediate_ba_tid = (u8) tid;
798 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
799 STA_MODIFY_REMOVE_BA_TID;
801 status = ADD_STA_SUCCESS;
802 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
808 case ADD_STA_SUCCESS:
809 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
810 start ? "start" : "stopp");
812 case ADD_STA_IMMEDIATE_BA_FAILURE:
813 IWL_WARN(mvm, "RX BA Session refused by fw\n");
818 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
819 start ? "start" : "stopp", status);
825 mvm->rx_ba_sessions++;
826 else if (mvm->rx_ba_sessions > 0)
827 /* check that restart flow didn't zero the counter */
828 mvm->rx_ba_sessions--;
834 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
835 int tid, u8 queue, bool start)
837 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
838 struct iwl_mvm_add_sta_cmd cmd = {};
842 lockdep_assert_held(&mvm->mutex);
845 mvm_sta->tfd_queue_msk |= BIT(queue);
846 mvm_sta->tid_disable_agg &= ~BIT(tid);
848 mvm_sta->tfd_queue_msk &= ~BIT(queue);
849 mvm_sta->tid_disable_agg |= BIT(tid);
852 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
853 cmd.sta_id = mvm_sta->sta_id;
854 cmd.add_modify = STA_MODE_MODIFY;
855 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
856 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
857 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
859 status = ADD_STA_SUCCESS;
860 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
866 case ADD_STA_SUCCESS:
870 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
871 start ? "start" : "stopp", status);
878 const u8 tid_to_mac80211_ac[] = {
889 static const u8 tid_to_ucode_ac[] = {
900 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
901 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
903 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
904 struct iwl_mvm_tid_data *tid_data;
907 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
910 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
911 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
912 mvmsta->tid_data[tid].state);
916 lockdep_assert_held(&mvm->mutex);
918 for (txq_id = mvm->first_agg_queue;
919 txq_id <= mvm->last_agg_queue; txq_id++)
920 if (mvm->queue_to_mac80211[txq_id] ==
921 IWL_INVALID_MAC80211_QUEUE)
924 if (txq_id > mvm->last_agg_queue) {
925 IWL_ERR(mvm, "Failed to allocate agg queue\n");
929 spin_lock_bh(&mvmsta->lock);
931 /* possible race condition - we entered D0i3 while starting agg */
932 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
933 spin_unlock_bh(&mvmsta->lock);
934 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
938 /* the new tx queue is still connected to the same mac80211 queue */
939 mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]];
941 tid_data = &mvmsta->tid_data[tid];
942 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
943 tid_data->txq_id = txq_id;
944 *ssn = tid_data->ssn;
946 IWL_DEBUG_TX_QUEUES(mvm,
947 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
948 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
949 tid_data->next_reclaimed);
951 if (tid_data->ssn == tid_data->next_reclaimed) {
952 tid_data->state = IWL_AGG_STARTING;
953 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
955 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
958 spin_unlock_bh(&mvmsta->lock);
963 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
964 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
966 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
967 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
968 int queue, fifo, ret;
971 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
972 != IWL_MAX_TID_COUNT);
974 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
976 spin_lock_bh(&mvmsta->lock);
978 queue = tid_data->txq_id;
979 tid_data->state = IWL_AGG_ON;
980 mvmsta->agg_tids |= BIT(tid);
981 tid_data->ssn = 0xffff;
982 spin_unlock_bh(&mvmsta->lock);
984 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
986 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
990 iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid,
994 * Even though in theory the peer could have different
995 * aggregation reorder buffer sizes for different sessions,
996 * our ucode doesn't allow for that and has a global limit
997 * for each station. Therefore, use the minimum of all the
998 * aggregation sessions and our default value.
1000 mvmsta->max_agg_bufsize =
1001 min(mvmsta->max_agg_bufsize, buf_size);
1002 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
1004 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
1007 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
1010 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1011 struct ieee80211_sta *sta, u16 tid)
1013 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1014 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1020 * If mac80211 is cleaning its state, then say that we finished since
1021 * our state has been cleared anyway.
1023 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1024 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1028 spin_lock_bh(&mvmsta->lock);
1030 txq_id = tid_data->txq_id;
1032 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
1033 mvmsta->sta_id, tid, txq_id, tid_data->state);
1035 mvmsta->agg_tids &= ~BIT(tid);
1037 switch (tid_data->state) {
1039 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1041 IWL_DEBUG_TX_QUEUES(mvm,
1042 "ssn = %d, next_recl = %d\n",
1043 tid_data->ssn, tid_data->next_reclaimed);
1045 /* There are still packets for this RA / TID in the HW */
1046 if (tid_data->ssn != tid_data->next_reclaimed) {
1047 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
1052 tid_data->ssn = 0xffff;
1053 tid_data->state = IWL_AGG_OFF;
1054 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1055 spin_unlock_bh(&mvmsta->lock);
1057 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1059 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1061 iwl_mvm_disable_txq(mvm, txq_id);
1063 case IWL_AGG_STARTING:
1064 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1066 * The agg session has been stopped before it was set up. This
1067 * can happen when the AddBA timer times out for example.
1070 /* No barriers since we are under mutex */
1071 lockdep_assert_held(&mvm->mutex);
1072 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1074 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1075 tid_data->state = IWL_AGG_OFF;
1080 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1081 mvmsta->sta_id, tid, tid_data->state);
1083 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
1087 spin_unlock_bh(&mvmsta->lock);
1092 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1093 struct ieee80211_sta *sta, u16 tid)
1095 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1096 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1098 enum iwl_mvm_agg_state old_state;
1101 * First set the agg state to OFF to avoid calling
1102 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1104 spin_lock_bh(&mvmsta->lock);
1105 txq_id = tid_data->txq_id;
1106 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
1107 mvmsta->sta_id, tid, txq_id, tid_data->state);
1108 old_state = tid_data->state;
1109 tid_data->state = IWL_AGG_OFF;
1110 mvmsta->agg_tids &= ~BIT(tid);
1111 spin_unlock_bh(&mvmsta->lock);
1113 if (old_state >= IWL_AGG_ON) {
1114 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
1115 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
1117 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1119 iwl_mvm_disable_txq(mvm, tid_data->txq_id);
1122 mvm->queue_to_mac80211[tid_data->txq_id] =
1123 IWL_INVALID_MAC80211_QUEUE;
1128 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
1132 lockdep_assert_held(&mvm->mutex);
1134 i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
1136 if (i == STA_KEY_MAX_NUM)
1137 return STA_KEY_IDX_INVALID;
1139 __set_bit(i, mvm->fw_key_table);
1144 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
1145 struct ieee80211_sta *sta)
1147 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1150 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1152 return mvm_sta->sta_id;
1156 * The device expects GTKs for station interfaces to be
1157 * installed as GTKs for the AP station. If we have no
1158 * station ID, then use AP's station ID.
1160 if (vif->type == NL80211_IFTYPE_STATION &&
1161 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
1162 return mvmvif->ap_sta_id;
1164 return IWL_MVM_STATION_COUNT;
1167 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
1168 struct iwl_mvm_sta *mvm_sta,
1169 struct ieee80211_key_conf *keyconf, bool mcast,
1170 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags)
1172 struct iwl_mvm_add_sta_key_cmd cmd = {};
1178 u8 sta_id = mvm_sta->sta_id;
1180 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1181 STA_KEY_FLG_KEYID_MSK;
1182 key_flags = cpu_to_le16(keyidx);
1183 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
1185 switch (keyconf->cipher) {
1186 case WLAN_CIPHER_SUITE_TKIP:
1187 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
1188 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
1189 for (i = 0; i < 5; i++)
1190 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1191 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1193 case WLAN_CIPHER_SUITE_CCMP:
1194 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
1195 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1197 case WLAN_CIPHER_SUITE_WEP104:
1198 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
1199 case WLAN_CIPHER_SUITE_WEP40:
1200 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
1201 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
1204 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
1205 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1209 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1211 cmd.key_offset = keyconf->hw_key_idx;
1212 cmd.key_flags = key_flags;
1213 cmd.sta_id = sta_id;
1215 status = ADD_STA_SUCCESS;
1216 if (cmd_flags & CMD_ASYNC)
1217 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
1220 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1224 case ADD_STA_SUCCESS:
1225 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1229 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1236 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1237 struct ieee80211_key_conf *keyconf,
1238 u8 sta_id, bool remove_key)
1240 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1242 /* verify the key details match the required command's expectations */
1243 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1244 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1245 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1248 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1249 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1252 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1254 struct ieee80211_key_seq seq;
1257 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1258 ieee80211_aes_cmac_calculate_k1_k2(keyconf,
1259 igtk_cmd.K1, igtk_cmd.K2);
1260 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1261 pn = seq.aes_cmac.pn;
1262 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1263 ((u64) pn[4] << 8) |
1264 ((u64) pn[3] << 16) |
1265 ((u64) pn[2] << 24) |
1266 ((u64) pn[1] << 32) |
1267 ((u64) pn[0] << 40));
1270 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1271 remove_key ? "removing" : "installing",
1274 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
1275 sizeof(igtk_cmd), &igtk_cmd);
1279 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1280 struct ieee80211_vif *vif,
1281 struct ieee80211_sta *sta)
1283 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1288 if (vif->type == NL80211_IFTYPE_STATION &&
1289 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1290 u8 sta_id = mvmvif->ap_sta_id;
1291 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1292 lockdep_is_held(&mvm->mutex));
1300 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1301 struct ieee80211_vif *vif,
1302 struct ieee80211_sta *sta,
1303 struct ieee80211_key_conf *keyconf,
1306 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1309 struct ieee80211_key_seq seq;
1312 switch (keyconf->cipher) {
1313 case WLAN_CIPHER_SUITE_TKIP:
1314 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1315 /* get phase 1 key from mac80211 */
1316 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1317 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1318 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1319 seq.tkip.iv32, p1k, 0);
1321 case WLAN_CIPHER_SUITE_CCMP:
1322 case WLAN_CIPHER_SUITE_WEP40:
1323 case WLAN_CIPHER_SUITE_WEP104:
1324 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1328 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1335 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
1336 struct ieee80211_key_conf *keyconf,
1339 struct iwl_mvm_add_sta_key_cmd cmd = {};
1344 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1345 STA_KEY_FLG_KEYID_MSK);
1346 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1347 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1350 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1352 cmd.key_flags = key_flags;
1353 cmd.key_offset = keyconf->hw_key_idx;
1354 cmd.sta_id = sta_id;
1356 status = ADD_STA_SUCCESS;
1357 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1361 case ADD_STA_SUCCESS:
1362 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1366 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1373 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1374 struct ieee80211_vif *vif,
1375 struct ieee80211_sta *sta,
1376 struct ieee80211_key_conf *keyconf,
1377 bool have_key_offset)
1379 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1383 lockdep_assert_held(&mvm->mutex);
1385 /* Get the station id from the mvm local station table */
1386 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1387 if (sta_id == IWL_MVM_STATION_COUNT) {
1388 IWL_ERR(mvm, "Failed to find station id\n");
1392 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1393 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1398 * It is possible that the 'sta' parameter is NULL, and thus
1399 * there is a need to retrieve the sta from the local station table.
1402 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1403 lockdep_is_held(&mvm->mutex));
1404 if (IS_ERR_OR_NULL(sta)) {
1405 IWL_ERR(mvm, "Invalid station id\n");
1410 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1413 if (!have_key_offset) {
1415 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1416 * configure it there. As a result, this workaround exists to
1417 * let the caller set the key offset (hw_key_idx), see d3.c.
1419 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1420 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1424 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast);
1426 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1431 * For WEP, the same key is used for multicast and unicast. Upload it
1432 * again, using the same key offset, and now pointing the other one
1433 * to the same key slot (offset).
1434 * If this fails, remove the original as well.
1436 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1437 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
1438 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast);
1440 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1441 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1446 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1447 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1452 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1453 struct ieee80211_vif *vif,
1454 struct ieee80211_sta *sta,
1455 struct ieee80211_key_conf *keyconf)
1457 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1461 lockdep_assert_held(&mvm->mutex);
1463 /* Get the station id from the mvm local station table */
1464 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1466 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1467 keyconf->keyidx, sta_id);
1469 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1470 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1472 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
1473 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1474 keyconf->hw_key_idx);
1478 if (sta_id == IWL_MVM_STATION_COUNT) {
1479 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1484 * It is possible that the 'sta' parameter is NULL, and thus
1485 * there is a need to retrieve the sta from the local station table,
1486 * for example when a GTK is removed (where the sta_id will then be
1487 * the AP ID, and no station was passed by mac80211.)
1490 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1491 lockdep_is_held(&mvm->mutex));
1493 IWL_ERR(mvm, "Invalid station id\n");
1498 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1501 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1505 /* delete WEP key twice to get rid of (now useless) offset */
1506 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1507 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
1508 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
1513 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1514 struct ieee80211_vif *vif,
1515 struct ieee80211_key_conf *keyconf,
1516 struct ieee80211_sta *sta, u32 iv32,
1519 struct iwl_mvm_sta *mvm_sta;
1520 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1521 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1523 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
1529 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1530 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1536 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1537 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1538 iv32, phase1key, CMD_ASYNC);
1542 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1543 struct ieee80211_sta *sta)
1545 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1546 struct iwl_mvm_add_sta_cmd cmd = {
1547 .add_modify = STA_MODE_MODIFY,
1548 .sta_id = mvmsta->sta_id,
1549 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
1550 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1554 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1556 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1559 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1560 struct ieee80211_sta *sta,
1561 enum ieee80211_frame_release_type reason,
1562 u16 cnt, u16 tids, bool more_data,
1565 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1566 struct iwl_mvm_add_sta_cmd cmd = {
1567 .add_modify = STA_MODE_MODIFY,
1568 .sta_id = mvmsta->sta_id,
1569 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1570 .sleep_tx_count = cpu_to_le16(cnt),
1571 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1574 unsigned long _tids = tids;
1576 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1577 * Note that this field is reserved and unused by firmware not
1578 * supporting GO uAPSD, so it's safe to always do this.
1580 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
1581 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
1583 /* If we're releasing frames from aggregation queues then check if the
1584 * all queues combined that we're releasing frames from have
1585 * - more frames than the service period, in which case more_data
1587 * - fewer than 'cnt' frames, in which case we need to adjust the
1588 * firmware command (but do that unconditionally)
1591 int remaining = cnt;
1593 spin_lock_bh(&mvmsta->lock);
1594 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
1595 struct iwl_mvm_tid_data *tid_data;
1598 tid_data = &mvmsta->tid_data[tid];
1599 if (WARN(tid_data->state != IWL_AGG_ON &&
1600 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
1601 "TID %d state is %d\n",
1602 tid, tid_data->state)) {
1603 spin_unlock_bh(&mvmsta->lock);
1604 ieee80211_sta_eosp(sta);
1608 n_queued = iwl_mvm_tid_queued(tid_data);
1609 if (n_queued > remaining) {
1614 remaining -= n_queued;
1616 spin_unlock_bh(&mvmsta->lock);
1618 cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
1619 if (WARN_ON(cnt - remaining == 0)) {
1620 ieee80211_sta_eosp(sta);
1625 /* Note: this is ignored by firmware not supporting GO uAPSD */
1627 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
1629 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
1630 mvmsta->next_status_eosp = true;
1631 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
1633 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
1636 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1638 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1641 int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
1642 struct iwl_rx_cmd_buffer *rxb,
1643 struct iwl_device_cmd *cmd)
1645 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1646 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
1647 struct ieee80211_sta *sta;
1648 u32 sta_id = le32_to_cpu(notif->sta_id);
1650 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
1654 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1655 if (!IS_ERR_OR_NULL(sta))
1656 ieee80211_sta_eosp(sta);
1662 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
1663 struct iwl_mvm_sta *mvmsta, bool disable)
1665 struct iwl_mvm_add_sta_cmd cmd = {
1666 .add_modify = STA_MODE_MODIFY,
1667 .sta_id = mvmsta->sta_id,
1668 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
1669 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
1670 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1674 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX))
1677 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1679 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1682 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
1683 struct ieee80211_sta *sta,
1686 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1688 spin_lock_bh(&mvm_sta->lock);
1690 if (mvm_sta->disable_tx == disable) {
1691 spin_unlock_bh(&mvm_sta->lock);
1695 mvm_sta->disable_tx = disable;
1698 * Tell mac80211 to start/stop queueing tx for this station,
1699 * but don't stop queueing if there are still pending frames
1702 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
1703 ieee80211_sta_block_awake(mvm->hw, sta, disable);
1705 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
1707 spin_unlock_bh(&mvm_sta->lock);
1710 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
1711 struct iwl_mvm_vif *mvmvif,
1714 struct ieee80211_sta *sta;
1715 struct iwl_mvm_sta *mvm_sta;
1718 lockdep_assert_held(&mvm->mutex);
1720 /* Block/unblock all the stations of the given mvmvif */
1721 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1722 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1723 lockdep_is_held(&mvm->mutex));
1724 if (IS_ERR_OR_NULL(sta))
1727 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1728 if (mvm_sta->mac_id_n_color !=
1729 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
1732 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
1736 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1738 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1739 struct iwl_mvm_sta *mvmsta;
1743 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1745 if (!WARN_ON(!mvmsta))
1746 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);