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
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 - 2015 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 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
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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
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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 = iwl_mvm_sta_from_mac80211(sta);
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);
212 unsigned int wdg_timeout =
213 iwl_mvm_get_wd_timeout(mvm, NULL, true, false);
216 lockdep_assert_held(&mvm->mutex);
218 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
220 /* Find available queues, and allocate them to the ACs */
221 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
222 u8 queue = find_first_zero_bit(&used_hw_queues,
223 mvm->first_agg_queue);
225 if (queue >= mvm->first_agg_queue) {
226 IWL_ERR(mvm, "Failed to allocate STA queue\n");
230 __set_bit(queue, &used_hw_queues);
231 mvmsta->hw_queue[ac] = queue;
234 /* Found a place for all queues - enable them */
235 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
236 iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
237 mvmsta->hw_queue[ac],
238 iwl_mvm_ac_to_tx_fifo[ac], 0,
240 mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
246 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
247 struct ieee80211_sta *sta)
249 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
250 unsigned long sta_msk;
253 lockdep_assert_held(&mvm->mutex);
255 /* disable the TDLS STA-specific queues */
256 sta_msk = mvmsta->tfd_queue_msk;
257 for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE)
258 iwl_mvm_disable_txq(mvm, i, i, 0, 0);
261 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
262 struct ieee80211_vif *vif,
263 struct ieee80211_sta *sta)
265 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
266 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
269 lockdep_assert_held(&mvm->mutex);
271 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
272 sta_id = iwl_mvm_find_free_sta_id(mvm,
273 ieee80211_vif_type_p2p(vif));
275 sta_id = mvm_sta->sta_id;
277 if (sta_id == IWL_MVM_STATION_COUNT)
280 if (vif->type == NL80211_IFTYPE_AP) {
281 mvmvif->ap_assoc_sta_count++;
282 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
285 spin_lock_init(&mvm_sta->lock);
287 mvm_sta->sta_id = sta_id;
288 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
291 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
292 mvm_sta->tx_protection = 0;
293 mvm_sta->tt_tx_protection = false;
295 /* HW restart, don't assume the memory has been zeroed */
296 atomic_set(&mvm->pending_frames[sta_id], 0);
297 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */
298 mvm_sta->tfd_queue_msk = 0;
300 /* allocate new queues for a TDLS station */
302 ret = iwl_mvm_tdls_sta_init(mvm, sta);
306 for (i = 0; i < IEEE80211_NUM_ACS; i++)
307 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
308 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
311 /* for HW restart - reset everything but the sequence number */
312 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
313 u16 seq = mvm_sta->tid_data[i].seq_number;
314 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
315 mvm_sta->tid_data[i].seq_number = seq;
317 mvm_sta->agg_tids = 0;
319 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
323 if (vif->type == NL80211_IFTYPE_STATION) {
325 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
326 mvmvif->ap_sta_id = sta_id;
328 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
332 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
337 iwl_mvm_tdls_sta_deinit(mvm, sta);
341 int iwl_mvm_update_sta(struct iwl_mvm *mvm,
342 struct ieee80211_vif *vif,
343 struct ieee80211_sta *sta)
345 return iwl_mvm_sta_send_to_fw(mvm, sta, true);
348 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
351 struct iwl_mvm_add_sta_cmd cmd = {};
355 lockdep_assert_held(&mvm->mutex);
357 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
358 cmd.sta_id = mvmsta->sta_id;
359 cmd.add_modify = STA_MODE_MODIFY;
360 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
361 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
363 status = ADD_STA_SUCCESS;
364 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
370 case ADD_STA_SUCCESS:
371 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
376 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
385 * Remove a station from the FW table. Before sending the command to remove
386 * the station validate that the station is indeed known to the driver (sanity
389 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
391 struct ieee80211_sta *sta;
392 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
397 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
398 lockdep_is_held(&mvm->mutex));
400 /* Note: internal stations are marked as error values */
402 IWL_ERR(mvm, "Invalid station id\n");
406 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
407 sizeof(rm_sta_cmd), &rm_sta_cmd);
409 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
416 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
418 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
422 * The mutex is needed because of the SYNC cmd, but not only: if the
423 * work would run concurrently with iwl_mvm_rm_sta, it would run before
424 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
425 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
428 mutex_lock(&mvm->mutex);
430 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
432 struct ieee80211_sta *sta =
433 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
434 lockdep_is_held(&mvm->mutex));
437 * This station is in use or RCU-removed; the latter happens in
438 * managed mode, where mac80211 removes the station before we
439 * can remove it from firmware (we can only do that after the
440 * MAC is marked unassociated), and possibly while the deauth
441 * frame to disconnect from the AP is still queued. Then, the
442 * station pointer is -ENOENT when the last skb is reclaimed.
444 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
447 if (PTR_ERR(sta) == -EINVAL) {
448 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
454 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
459 WARN_ON(PTR_ERR(sta) != -EBUSY);
460 /* This station was removed and we waited until it got drained,
461 * we can now proceed and remove it.
463 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
466 "Couldn't remove sta %d after it was drained\n",
470 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
471 clear_bit(sta_id, mvm->sta_drained);
473 if (mvm->tfd_drained[sta_id]) {
474 unsigned long i, msk = mvm->tfd_drained[sta_id];
476 for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
477 iwl_mvm_disable_txq(mvm, i, i, 0, 0);
479 mvm->tfd_drained[sta_id] = 0;
480 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
485 mutex_unlock(&mvm->mutex);
488 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
489 struct ieee80211_vif *vif,
490 struct ieee80211_sta *sta)
492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
493 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
496 lockdep_assert_held(&mvm->mutex);
498 if (vif->type == NL80211_IFTYPE_STATION &&
499 mvmvif->ap_sta_id == mvm_sta->sta_id) {
500 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
503 /* flush its queues here since we are freeing mvm_sta */
504 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
507 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
508 mvm_sta->tfd_queue_msk);
511 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
513 /* if we are associated - we can't remove the AP STA now */
514 if (vif->bss_conf.assoc)
517 /* unassoc - go ahead - remove the AP STA now */
518 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
520 /* clear d0i3_ap_sta_id if no longer relevant */
521 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
522 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
526 * This shouldn't happen - the TDLS channel switch should be canceled
527 * before the STA is removed.
529 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
530 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
531 cancel_delayed_work(&mvm->tdls_cs.dwork);
535 * Make sure that the tx response code sees the station as -EBUSY and
536 * calls the drain worker.
538 spin_lock_bh(&mvm_sta->lock);
540 * There are frames pending on the AC queues for this station.
541 * We need to wait until all the frames are drained...
543 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
544 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
546 spin_unlock_bh(&mvm_sta->lock);
548 /* disable TDLS sta queues on drain complete */
550 mvm->tfd_drained[mvm_sta->sta_id] =
551 mvm_sta->tfd_queue_msk;
552 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
556 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
558 spin_unlock_bh(&mvm_sta->lock);
561 iwl_mvm_tdls_sta_deinit(mvm, sta);
563 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
564 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
570 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
571 struct ieee80211_vif *vif,
574 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
576 lockdep_assert_held(&mvm->mutex);
578 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
582 static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
583 struct iwl_mvm_int_sta *sta,
584 u32 qmask, enum nl80211_iftype iftype)
586 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
587 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
588 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
592 sta->tfd_queue_msk = qmask;
594 /* put a non-NULL value so iterating over the stations won't stop */
595 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
599 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
600 struct iwl_mvm_int_sta *sta)
602 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
603 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
604 sta->sta_id = IWL_MVM_STATION_COUNT;
607 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
608 struct iwl_mvm_int_sta *sta,
610 u16 mac_id, u16 color)
612 struct iwl_mvm_add_sta_cmd cmd;
616 lockdep_assert_held(&mvm->mutex);
618 memset(&cmd, 0, sizeof(cmd));
619 cmd.sta_id = sta->sta_id;
620 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
623 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
626 memcpy(cmd.addr, addr, ETH_ALEN);
628 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
634 case ADD_STA_SUCCESS:
635 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
639 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
646 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
648 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
649 mvm->cfg->base_params->wd_timeout :
650 IWL_WATCHDOG_DISABLED;
653 lockdep_assert_held(&mvm->mutex);
655 /* Map Aux queue to fifo - needs to happen before adding Aux station */
656 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue,
657 IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
659 /* Allocate aux station and assign to it the aux queue */
660 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
661 NL80211_IFTYPE_UNSPECIFIED);
665 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
669 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
673 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
675 lockdep_assert_held(&mvm->mutex);
677 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
681 * Send the add station command for the vif's broadcast station.
682 * Assumes that the station was already allocated.
684 * @mvm: the mvm component
685 * @vif: the interface to which the broadcast station is added
686 * @bsta: the broadcast station to add.
688 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
690 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
691 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
692 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
693 const u8 *baddr = _baddr;
695 lockdep_assert_held(&mvm->mutex);
697 if (vif->type == NL80211_IFTYPE_ADHOC)
698 baddr = vif->bss_conf.bssid;
700 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
703 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
704 mvmvif->id, mvmvif->color);
707 /* Send the FW a request to remove the station from it's internal data
708 * structures, but DO NOT remove the entry from the local data structures. */
709 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
711 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
714 lockdep_assert_held(&mvm->mutex);
716 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
718 IWL_WARN(mvm, "Failed sending remove station\n");
722 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
724 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
727 lockdep_assert_held(&mvm->mutex);
729 qmask = iwl_mvm_mac_get_queues_mask(vif);
732 * The firmware defines the TFD queue mask to only be relevant
733 * for *unicast* queues, so the multicast (CAB) queue shouldn't
736 if (vif->type == NL80211_IFTYPE_AP)
737 qmask &= ~BIT(vif->cab_queue);
739 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
740 ieee80211_vif_type_p2p(vif));
743 /* Allocate a new station entry for the broadcast station to the given vif,
744 * and send it to the FW.
745 * Note that each P2P mac should have its own broadcast station.
747 * @mvm: the mvm component
748 * @vif: the interface to which the broadcast station is added
749 * @bsta: the broadcast station to add. */
750 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
752 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
753 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
756 lockdep_assert_held(&mvm->mutex);
758 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
762 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
765 iwl_mvm_dealloc_int_sta(mvm, bsta);
770 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
772 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
774 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
778 * Send the FW a request to remove the station from it's internal data
779 * structures, and in addition remove it from the local data structure.
781 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
785 lockdep_assert_held(&mvm->mutex);
787 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
789 iwl_mvm_dealloc_bcast_sta(mvm, vif);
794 #define IWL_MAX_RX_BA_SESSIONS 16
796 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
797 int tid, u16 ssn, bool start)
799 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
800 struct iwl_mvm_add_sta_cmd cmd = {};
804 lockdep_assert_held(&mvm->mutex);
806 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
807 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
811 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
812 cmd.sta_id = mvm_sta->sta_id;
813 cmd.add_modify = STA_MODE_MODIFY;
815 cmd.add_immediate_ba_tid = (u8) tid;
816 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
818 cmd.remove_immediate_ba_tid = (u8) tid;
820 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
821 STA_MODIFY_REMOVE_BA_TID;
823 status = ADD_STA_SUCCESS;
824 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
830 case ADD_STA_SUCCESS:
831 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
832 start ? "start" : "stopp");
834 case ADD_STA_IMMEDIATE_BA_FAILURE:
835 IWL_WARN(mvm, "RX BA Session refused by fw\n");
840 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
841 start ? "start" : "stopp", status);
847 mvm->rx_ba_sessions++;
848 else if (mvm->rx_ba_sessions > 0)
849 /* check that restart flow didn't zero the counter */
850 mvm->rx_ba_sessions--;
856 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
857 int tid, u8 queue, bool start)
859 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
860 struct iwl_mvm_add_sta_cmd cmd = {};
864 lockdep_assert_held(&mvm->mutex);
867 mvm_sta->tfd_queue_msk |= BIT(queue);
868 mvm_sta->tid_disable_agg &= ~BIT(tid);
870 mvm_sta->tfd_queue_msk &= ~BIT(queue);
871 mvm_sta->tid_disable_agg |= BIT(tid);
874 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
875 cmd.sta_id = mvm_sta->sta_id;
876 cmd.add_modify = STA_MODE_MODIFY;
877 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
878 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
879 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
881 status = ADD_STA_SUCCESS;
882 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
888 case ADD_STA_SUCCESS:
892 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
893 start ? "start" : "stopp", status);
900 const u8 tid_to_mac80211_ac[] = {
911 static const u8 tid_to_ucode_ac[] = {
922 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
923 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
925 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
926 struct iwl_mvm_tid_data *tid_data;
930 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
933 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
934 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
935 mvmsta->tid_data[tid].state);
939 lockdep_assert_held(&mvm->mutex);
941 spin_lock_bh(&mvmsta->lock);
943 /* possible race condition - we entered D0i3 while starting agg */
944 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
945 spin_unlock_bh(&mvmsta->lock);
946 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
950 spin_lock_bh(&mvm->queue_info_lock);
952 txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue,
953 mvm->last_agg_queue);
956 spin_unlock_bh(&mvm->queue_info_lock);
957 IWL_ERR(mvm, "Failed to allocate agg queue\n");
960 mvm->queue_info[txq_id].setup_reserved = true;
961 spin_unlock_bh(&mvm->queue_info_lock);
963 tid_data = &mvmsta->tid_data[tid];
964 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
965 tid_data->txq_id = txq_id;
966 *ssn = tid_data->ssn;
968 IWL_DEBUG_TX_QUEUES(mvm,
969 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
970 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
971 tid_data->next_reclaimed);
973 if (tid_data->ssn == tid_data->next_reclaimed) {
974 tid_data->state = IWL_AGG_STARTING;
975 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
977 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
983 spin_unlock_bh(&mvmsta->lock);
988 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
989 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
991 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
992 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
993 unsigned int wdg_timeout =
994 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
995 int queue, fifo, ret;
998 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
999 != IWL_MAX_TID_COUNT);
1001 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
1003 spin_lock_bh(&mvmsta->lock);
1004 ssn = tid_data->ssn;
1005 queue = tid_data->txq_id;
1006 tid_data->state = IWL_AGG_ON;
1007 mvmsta->agg_tids |= BIT(tid);
1008 tid_data->ssn = 0xffff;
1009 spin_unlock_bh(&mvmsta->lock);
1011 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1013 iwl_mvm_enable_agg_txq(mvm, queue,
1014 vif->hw_queue[tid_to_mac80211_ac[tid]], fifo,
1015 mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout);
1017 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1021 /* No need to mark as reserved */
1022 spin_lock_bh(&mvm->queue_info_lock);
1023 mvm->queue_info[queue].setup_reserved = false;
1024 spin_unlock_bh(&mvm->queue_info_lock);
1027 * Even though in theory the peer could have different
1028 * aggregation reorder buffer sizes for different sessions,
1029 * our ucode doesn't allow for that and has a global limit
1030 * for each station. Therefore, use the minimum of all the
1031 * aggregation sessions and our default value.
1033 mvmsta->max_agg_bufsize =
1034 min(mvmsta->max_agg_bufsize, buf_size);
1035 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
1037 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
1040 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
1043 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1044 struct ieee80211_sta *sta, u16 tid)
1046 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1047 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1053 * If mac80211 is cleaning its state, then say that we finished since
1054 * our state has been cleared anyway.
1056 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1057 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1061 spin_lock_bh(&mvmsta->lock);
1063 txq_id = tid_data->txq_id;
1065 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
1066 mvmsta->sta_id, tid, txq_id, tid_data->state);
1068 mvmsta->agg_tids &= ~BIT(tid);
1070 /* No need to mark as reserved anymore */
1071 spin_lock_bh(&mvm->queue_info_lock);
1072 mvm->queue_info[txq_id].setup_reserved = false;
1073 spin_unlock_bh(&mvm->queue_info_lock);
1075 switch (tid_data->state) {
1077 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1079 IWL_DEBUG_TX_QUEUES(mvm,
1080 "ssn = %d, next_recl = %d\n",
1081 tid_data->ssn, tid_data->next_reclaimed);
1083 /* There are still packets for this RA / TID in the HW */
1084 if (tid_data->ssn != tid_data->next_reclaimed) {
1085 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
1090 tid_data->ssn = 0xffff;
1091 tid_data->state = IWL_AGG_OFF;
1092 spin_unlock_bh(&mvmsta->lock);
1094 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1096 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1098 iwl_mvm_disable_txq(mvm, txq_id,
1099 vif->hw_queue[tid_to_mac80211_ac[tid]], tid,
1102 case IWL_AGG_STARTING:
1103 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1105 * The agg session has been stopped before it was set up. This
1106 * can happen when the AddBA timer times out for example.
1109 /* No barriers since we are under mutex */
1110 lockdep_assert_held(&mvm->mutex);
1112 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1113 tid_data->state = IWL_AGG_OFF;
1118 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1119 mvmsta->sta_id, tid, tid_data->state);
1121 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
1125 spin_unlock_bh(&mvmsta->lock);
1130 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1131 struct ieee80211_sta *sta, u16 tid)
1133 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1134 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1136 enum iwl_mvm_agg_state old_state;
1139 * First set the agg state to OFF to avoid calling
1140 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1142 spin_lock_bh(&mvmsta->lock);
1143 txq_id = tid_data->txq_id;
1144 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
1145 mvmsta->sta_id, tid, txq_id, tid_data->state);
1146 old_state = tid_data->state;
1147 tid_data->state = IWL_AGG_OFF;
1148 mvmsta->agg_tids &= ~BIT(tid);
1149 spin_unlock_bh(&mvmsta->lock);
1151 /* No need to mark as reserved */
1152 spin_lock_bh(&mvm->queue_info_lock);
1153 mvm->queue_info[txq_id].setup_reserved = false;
1154 spin_unlock_bh(&mvm->queue_info_lock);
1156 if (old_state >= IWL_AGG_ON) {
1157 iwl_mvm_drain_sta(mvm, mvmsta, true);
1158 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
1159 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
1160 iwl_trans_wait_tx_queue_empty(mvm->trans,
1161 mvmsta->tfd_queue_msk);
1162 iwl_mvm_drain_sta(mvm, mvmsta, false);
1164 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1166 iwl_mvm_disable_txq(mvm, tid_data->txq_id,
1167 vif->hw_queue[tid_to_mac80211_ac[tid]], tid,
1174 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
1176 int i, max = -1, max_offs = -1;
1178 lockdep_assert_held(&mvm->mutex);
1180 /* Pick the unused key offset with the highest 'deleted'
1181 * counter. Every time a key is deleted, all the counters
1182 * are incremented and the one that was just deleted is
1183 * reset to zero. Thus, the highest counter is the one
1184 * that was deleted longest ago. Pick that one.
1186 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
1187 if (test_bit(i, mvm->fw_key_table))
1189 if (mvm->fw_key_deleted[i] > max) {
1190 max = mvm->fw_key_deleted[i];
1196 return STA_KEY_IDX_INVALID;
1198 __set_bit(max_offs, mvm->fw_key_table);
1203 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
1204 struct ieee80211_sta *sta)
1206 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1209 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1211 return mvm_sta->sta_id;
1215 * The device expects GTKs for station interfaces to be
1216 * installed as GTKs for the AP station. If we have no
1217 * station ID, then use AP's station ID.
1219 if (vif->type == NL80211_IFTYPE_STATION &&
1220 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
1221 return mvmvif->ap_sta_id;
1223 return IWL_MVM_STATION_COUNT;
1226 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
1227 struct iwl_mvm_sta *mvm_sta,
1228 struct ieee80211_key_conf *keyconf, bool mcast,
1229 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags)
1231 struct iwl_mvm_add_sta_key_cmd cmd = {};
1237 u8 sta_id = mvm_sta->sta_id;
1239 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1240 STA_KEY_FLG_KEYID_MSK;
1241 key_flags = cpu_to_le16(keyidx);
1242 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
1244 switch (keyconf->cipher) {
1245 case WLAN_CIPHER_SUITE_TKIP:
1246 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
1247 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
1248 for (i = 0; i < 5; i++)
1249 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1250 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1252 case WLAN_CIPHER_SUITE_CCMP:
1253 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
1254 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1256 case WLAN_CIPHER_SUITE_WEP104:
1257 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
1259 case WLAN_CIPHER_SUITE_WEP40:
1260 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
1261 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
1264 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
1265 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1269 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1271 cmd.key_offset = keyconf->hw_key_idx;
1272 cmd.key_flags = key_flags;
1273 cmd.sta_id = sta_id;
1275 status = ADD_STA_SUCCESS;
1276 if (cmd_flags & CMD_ASYNC)
1277 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
1280 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1284 case ADD_STA_SUCCESS:
1285 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1289 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1296 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1297 struct ieee80211_key_conf *keyconf,
1298 u8 sta_id, bool remove_key)
1300 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1302 /* verify the key details match the required command's expectations */
1303 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1304 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1305 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1308 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1309 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1312 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1314 struct ieee80211_key_seq seq;
1317 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1318 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1319 pn = seq.aes_cmac.pn;
1320 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1321 ((u64) pn[4] << 8) |
1322 ((u64) pn[3] << 16) |
1323 ((u64) pn[2] << 24) |
1324 ((u64) pn[1] << 32) |
1325 ((u64) pn[0] << 40));
1328 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1329 remove_key ? "removing" : "installing",
1332 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
1333 sizeof(igtk_cmd), &igtk_cmd);
1337 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1338 struct ieee80211_vif *vif,
1339 struct ieee80211_sta *sta)
1341 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1346 if (vif->type == NL80211_IFTYPE_STATION &&
1347 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1348 u8 sta_id = mvmvif->ap_sta_id;
1349 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1350 lockdep_is_held(&mvm->mutex));
1358 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1359 struct ieee80211_vif *vif,
1360 struct ieee80211_sta *sta,
1361 struct ieee80211_key_conf *keyconf,
1364 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1367 struct ieee80211_key_seq seq;
1370 switch (keyconf->cipher) {
1371 case WLAN_CIPHER_SUITE_TKIP:
1372 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1373 /* get phase 1 key from mac80211 */
1374 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1375 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1376 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1377 seq.tkip.iv32, p1k, 0);
1379 case WLAN_CIPHER_SUITE_CCMP:
1380 case WLAN_CIPHER_SUITE_WEP40:
1381 case WLAN_CIPHER_SUITE_WEP104:
1382 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1386 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1393 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
1394 struct ieee80211_key_conf *keyconf,
1397 struct iwl_mvm_add_sta_key_cmd cmd = {};
1402 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1403 STA_KEY_FLG_KEYID_MSK);
1404 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1405 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1408 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1410 cmd.key_flags = key_flags;
1411 cmd.key_offset = keyconf->hw_key_idx;
1412 cmd.sta_id = sta_id;
1414 status = ADD_STA_SUCCESS;
1415 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1419 case ADD_STA_SUCCESS:
1420 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1424 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1431 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1432 struct ieee80211_vif *vif,
1433 struct ieee80211_sta *sta,
1434 struct ieee80211_key_conf *keyconf,
1435 bool have_key_offset)
1437 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1440 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
1442 lockdep_assert_held(&mvm->mutex);
1444 /* Get the station id from the mvm local station table */
1445 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1446 if (sta_id == IWL_MVM_STATION_COUNT) {
1447 IWL_ERR(mvm, "Failed to find station id\n");
1451 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1452 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1457 * It is possible that the 'sta' parameter is NULL, and thus
1458 * there is a need to retrieve the sta from the local station table.
1461 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1462 lockdep_is_held(&mvm->mutex));
1463 if (IS_ERR_OR_NULL(sta)) {
1464 IWL_ERR(mvm, "Invalid station id\n");
1469 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1472 if (!have_key_offset) {
1474 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1475 * configure it there. As a result, this workaround exists to
1476 * let the caller set the key offset (hw_key_idx), see d3.c.
1478 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1479 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1483 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast);
1485 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1490 * For WEP, the same key is used for multicast and unicast. Upload it
1491 * again, using the same key offset, and now pointing the other one
1492 * to the same key slot (offset).
1493 * If this fails, remove the original as well.
1495 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1496 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
1497 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast);
1499 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1500 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1505 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1506 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1507 sta ? sta->addr : zero_addr, ret);
1511 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1512 struct ieee80211_vif *vif,
1513 struct ieee80211_sta *sta,
1514 struct ieee80211_key_conf *keyconf)
1516 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1520 lockdep_assert_held(&mvm->mutex);
1522 /* Get the station id from the mvm local station table */
1523 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1525 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1526 keyconf->keyidx, sta_id);
1528 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1529 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1531 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
1532 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1533 keyconf->hw_key_idx);
1537 /* track which key was deleted last */
1538 for (i = 0; i < STA_KEY_MAX_NUM; i++) {
1539 if (mvm->fw_key_deleted[i] < U8_MAX)
1540 mvm->fw_key_deleted[i]++;
1542 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
1544 if (sta_id == IWL_MVM_STATION_COUNT) {
1545 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1550 * It is possible that the 'sta' parameter is NULL, and thus
1551 * there is a need to retrieve the sta from the local station table,
1552 * for example when a GTK is removed (where the sta_id will then be
1553 * the AP ID, and no station was passed by mac80211.)
1556 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1557 lockdep_is_held(&mvm->mutex));
1559 IWL_ERR(mvm, "Invalid station id\n");
1564 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1567 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1571 /* delete WEP key twice to get rid of (now useless) offset */
1572 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1573 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
1574 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
1579 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1580 struct ieee80211_vif *vif,
1581 struct ieee80211_key_conf *keyconf,
1582 struct ieee80211_sta *sta, u32 iv32,
1585 struct iwl_mvm_sta *mvm_sta;
1586 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1587 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1589 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
1595 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1596 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1602 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1603 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1604 iv32, phase1key, CMD_ASYNC);
1608 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1609 struct ieee80211_sta *sta)
1611 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1612 struct iwl_mvm_add_sta_cmd cmd = {
1613 .add_modify = STA_MODE_MODIFY,
1614 .sta_id = mvmsta->sta_id,
1615 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
1616 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1620 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1622 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1625 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1626 struct ieee80211_sta *sta,
1627 enum ieee80211_frame_release_type reason,
1628 u16 cnt, u16 tids, bool more_data,
1631 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1632 struct iwl_mvm_add_sta_cmd cmd = {
1633 .add_modify = STA_MODE_MODIFY,
1634 .sta_id = mvmsta->sta_id,
1635 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1636 .sleep_tx_count = cpu_to_le16(cnt),
1637 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1640 unsigned long _tids = tids;
1642 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1643 * Note that this field is reserved and unused by firmware not
1644 * supporting GO uAPSD, so it's safe to always do this.
1646 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
1647 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
1649 /* If we're releasing frames from aggregation queues then check if the
1650 * all queues combined that we're releasing frames from have
1651 * - more frames than the service period, in which case more_data
1653 * - fewer than 'cnt' frames, in which case we need to adjust the
1654 * firmware command (but do that unconditionally)
1657 int remaining = cnt;
1659 spin_lock_bh(&mvmsta->lock);
1660 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
1661 struct iwl_mvm_tid_data *tid_data;
1664 tid_data = &mvmsta->tid_data[tid];
1665 if (WARN(tid_data->state != IWL_AGG_ON &&
1666 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
1667 "TID %d state is %d\n",
1668 tid, tid_data->state)) {
1669 spin_unlock_bh(&mvmsta->lock);
1670 ieee80211_sta_eosp(sta);
1674 n_queued = iwl_mvm_tid_queued(tid_data);
1675 if (n_queued > remaining) {
1680 remaining -= n_queued;
1682 spin_unlock_bh(&mvmsta->lock);
1684 cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
1685 if (WARN_ON(cnt - remaining == 0)) {
1686 ieee80211_sta_eosp(sta);
1691 /* Note: this is ignored by firmware not supporting GO uAPSD */
1693 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
1695 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
1696 mvmsta->next_status_eosp = true;
1697 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
1699 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
1702 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1704 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1707 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
1708 struct iwl_rx_cmd_buffer *rxb)
1710 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1711 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
1712 struct ieee80211_sta *sta;
1713 u32 sta_id = le32_to_cpu(notif->sta_id);
1715 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
1719 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1720 if (!IS_ERR_OR_NULL(sta))
1721 ieee80211_sta_eosp(sta);
1725 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
1726 struct iwl_mvm_sta *mvmsta, bool disable)
1728 struct iwl_mvm_add_sta_cmd cmd = {
1729 .add_modify = STA_MODE_MODIFY,
1730 .sta_id = mvmsta->sta_id,
1731 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
1732 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
1733 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1737 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1739 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1742 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
1743 struct ieee80211_sta *sta,
1746 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1748 spin_lock_bh(&mvm_sta->lock);
1750 if (mvm_sta->disable_tx == disable) {
1751 spin_unlock_bh(&mvm_sta->lock);
1755 mvm_sta->disable_tx = disable;
1758 * Tell mac80211 to start/stop queuing tx for this station,
1759 * but don't stop queuing if there are still pending frames
1762 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
1763 ieee80211_sta_block_awake(mvm->hw, sta, disable);
1765 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
1767 spin_unlock_bh(&mvm_sta->lock);
1770 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
1771 struct iwl_mvm_vif *mvmvif,
1774 struct ieee80211_sta *sta;
1775 struct iwl_mvm_sta *mvm_sta;
1778 lockdep_assert_held(&mvm->mutex);
1780 /* Block/unblock all the stations of the given mvmvif */
1781 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1782 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1783 lockdep_is_held(&mvm->mutex));
1784 if (IS_ERR_OR_NULL(sta))
1787 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1788 if (mvm_sta->mac_id_n_color !=
1789 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
1792 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
1796 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1798 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1799 struct iwl_mvm_sta *mvmsta;
1803 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1805 if (!WARN_ON(!mvmsta))
1806 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);