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,
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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 = 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 = iwlmvm_mod_params.tfd_q_hang_detect ?
213 mvm->cfg->base_params->wd_timeout :
214 IWL_WATCHDOG_DISABLED;
217 lockdep_assert_held(&mvm->mutex);
219 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
221 /* Find available queues, and allocate them to the ACs */
222 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
223 u8 queue = find_first_zero_bit(&used_hw_queues,
224 mvm->first_agg_queue);
226 if (queue >= mvm->first_agg_queue) {
227 IWL_ERR(mvm, "Failed to allocate STA queue\n");
231 __set_bit(queue, &used_hw_queues);
232 mvmsta->hw_queue[ac] = queue;
235 /* Found a place for all queues - enable them */
236 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
237 iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
238 iwl_mvm_ac_to_tx_fifo[ac], wdg_timeout);
239 mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
245 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
246 struct ieee80211_sta *sta)
248 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
249 unsigned long sta_msk;
252 lockdep_assert_held(&mvm->mutex);
254 /* disable the TDLS STA-specific queues */
255 sta_msk = mvmsta->tfd_queue_msk;
256 for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE)
257 iwl_mvm_disable_txq(mvm, i, 0);
260 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
261 struct ieee80211_vif *vif,
262 struct ieee80211_sta *sta)
264 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
265 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
268 lockdep_assert_held(&mvm->mutex);
270 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
271 sta_id = iwl_mvm_find_free_sta_id(mvm,
272 ieee80211_vif_type_p2p(vif));
274 sta_id = mvm_sta->sta_id;
276 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
279 spin_lock_init(&mvm_sta->lock);
281 mvm_sta->sta_id = sta_id;
282 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
285 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
286 mvm_sta->tx_protection = 0;
287 mvm_sta->tt_tx_protection = false;
289 /* HW restart, don't assume the memory has been zeroed */
290 atomic_set(&mvm->pending_frames[sta_id], 0);
291 mvm_sta->tid_disable_agg = 0;
292 mvm_sta->tfd_queue_msk = 0;
294 /* allocate new queues for a TDLS station */
296 ret = iwl_mvm_tdls_sta_init(mvm, sta);
300 for (i = 0; i < IEEE80211_NUM_ACS; i++)
301 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
302 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
305 /* for HW restart - reset everything but the sequence number */
306 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
307 u16 seq = mvm_sta->tid_data[i].seq_number;
308 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
309 mvm_sta->tid_data[i].seq_number = seq;
311 mvm_sta->agg_tids = 0;
313 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
317 if (vif->type == NL80211_IFTYPE_STATION) {
319 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
320 mvmvif->ap_sta_id = sta_id;
322 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
326 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
331 iwl_mvm_tdls_sta_deinit(mvm, sta);
335 int iwl_mvm_update_sta(struct iwl_mvm *mvm,
336 struct ieee80211_vif *vif,
337 struct ieee80211_sta *sta)
339 return iwl_mvm_sta_send_to_fw(mvm, sta, true);
342 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
345 struct iwl_mvm_add_sta_cmd cmd = {};
349 lockdep_assert_held(&mvm->mutex);
351 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
352 cmd.sta_id = mvmsta->sta_id;
353 cmd.add_modify = STA_MODE_MODIFY;
354 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
355 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
357 status = ADD_STA_SUCCESS;
358 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
364 case ADD_STA_SUCCESS:
365 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
370 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
379 * Remove a station from the FW table. Before sending the command to remove
380 * the station validate that the station is indeed known to the driver (sanity
383 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
385 struct ieee80211_sta *sta;
386 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
391 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
392 lockdep_is_held(&mvm->mutex));
394 /* Note: internal stations are marked as error values */
396 IWL_ERR(mvm, "Invalid station id\n");
400 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,
401 sizeof(rm_sta_cmd), &rm_sta_cmd);
403 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
410 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
412 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
416 * The mutex is needed because of the SYNC cmd, but not only: if the
417 * work would run concurrently with iwl_mvm_rm_sta, it would run before
418 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
419 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
422 mutex_lock(&mvm->mutex);
424 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
426 struct ieee80211_sta *sta =
427 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
428 lockdep_is_held(&mvm->mutex));
431 * This station is in use or RCU-removed; the latter happens in
432 * managed mode, where mac80211 removes the station before we
433 * can remove it from firmware (we can only do that after the
434 * MAC is marked unassociated), and possibly while the deauth
435 * frame to disconnect from the AP is still queued. Then, the
436 * station pointer is -ENOENT when the last skb is reclaimed.
438 if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
441 if (PTR_ERR(sta) == -EINVAL) {
442 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
448 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
453 WARN_ON(PTR_ERR(sta) != -EBUSY);
454 /* This station was removed and we waited until it got drained,
455 * we can now proceed and remove it.
457 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
460 "Couldn't remove sta %d after it was drained\n",
464 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
465 clear_bit(sta_id, mvm->sta_drained);
467 if (mvm->tfd_drained[sta_id]) {
468 unsigned long i, msk = mvm->tfd_drained[sta_id];
470 for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
471 iwl_mvm_disable_txq(mvm, i, 0);
473 mvm->tfd_drained[sta_id] = 0;
474 IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
479 mutex_unlock(&mvm->mutex);
482 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
483 struct ieee80211_vif *vif,
484 struct ieee80211_sta *sta)
486 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
487 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
490 lockdep_assert_held(&mvm->mutex);
492 if (vif->type == NL80211_IFTYPE_STATION &&
493 mvmvif->ap_sta_id == mvm_sta->sta_id) {
494 /* flush its queues here since we are freeing mvm_sta */
495 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
497 /* if we are associated - we can't remove the AP STA now */
498 if (vif->bss_conf.assoc)
501 /* unassoc - go ahead - remove the AP STA now */
502 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
504 /* clear d0i3_ap_sta_id if no longer relevant */
505 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
506 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
510 * This shouldn't happen - the TDLS channel switch should be canceled
511 * before the STA is removed.
513 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
514 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
515 cancel_delayed_work(&mvm->tdls_cs.dwork);
519 * Make sure that the tx response code sees the station as -EBUSY and
520 * calls the drain worker.
522 spin_lock_bh(&mvm_sta->lock);
524 * There are frames pending on the AC queues for this station.
525 * We need to wait until all the frames are drained...
527 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
528 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
530 spin_unlock_bh(&mvm_sta->lock);
532 /* disable TDLS sta queues on drain complete */
534 mvm->tfd_drained[mvm_sta->sta_id] =
535 mvm_sta->tfd_queue_msk;
536 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
540 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
542 spin_unlock_bh(&mvm_sta->lock);
545 iwl_mvm_tdls_sta_deinit(mvm, sta);
547 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
548 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
554 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
555 struct ieee80211_vif *vif,
558 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
560 lockdep_assert_held(&mvm->mutex);
562 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
566 static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
567 struct iwl_mvm_int_sta *sta,
568 u32 qmask, enum nl80211_iftype iftype)
570 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
571 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
572 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
576 sta->tfd_queue_msk = qmask;
578 /* put a non-NULL value so iterating over the stations won't stop */
579 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
583 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
584 struct iwl_mvm_int_sta *sta)
586 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
587 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
588 sta->sta_id = IWL_MVM_STATION_COUNT;
591 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
592 struct iwl_mvm_int_sta *sta,
594 u16 mac_id, u16 color)
596 struct iwl_mvm_add_sta_cmd cmd;
600 lockdep_assert_held(&mvm->mutex);
602 memset(&cmd, 0, sizeof(cmd));
603 cmd.sta_id = sta->sta_id;
604 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
607 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
610 memcpy(cmd.addr, addr, ETH_ALEN);
612 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
618 case ADD_STA_SUCCESS:
619 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
623 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
630 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
632 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
633 mvm->cfg->base_params->wd_timeout :
634 IWL_WATCHDOG_DISABLED;
637 lockdep_assert_held(&mvm->mutex);
639 /* Map Aux queue to fifo - needs to happen before adding Aux station */
640 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue,
641 IWL_MVM_TX_FIFO_MCAST, wdg_timeout);
643 /* Allocate aux station and assign to it the aux queue */
644 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
645 NL80211_IFTYPE_UNSPECIFIED);
649 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
653 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
657 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
659 lockdep_assert_held(&mvm->mutex);
661 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
665 * Send the add station command for the vif's broadcast station.
666 * Assumes that the station was already allocated.
668 * @mvm: the mvm component
669 * @vif: the interface to which the broadcast station is added
670 * @bsta: the broadcast station to add.
672 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
675 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
676 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
677 const u8 *baddr = _baddr;
679 lockdep_assert_held(&mvm->mutex);
681 if (vif->type == NL80211_IFTYPE_ADHOC)
682 baddr = vif->bss_conf.bssid;
684 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
687 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
688 mvmvif->id, mvmvif->color);
691 /* Send the FW a request to remove the station from it's internal data
692 * structures, but DO NOT remove the entry from the local data structures. */
693 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
698 lockdep_assert_held(&mvm->mutex);
700 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
702 IWL_WARN(mvm, "Failed sending remove station\n");
706 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
708 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
711 lockdep_assert_held(&mvm->mutex);
713 qmask = iwl_mvm_mac_get_queues_mask(vif);
716 * The firmware defines the TFD queue mask to only be relevant
717 * for *unicast* queues, so the multicast (CAB) queue shouldn't
720 if (vif->type == NL80211_IFTYPE_AP)
721 qmask &= ~BIT(vif->cab_queue);
723 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
724 ieee80211_vif_type_p2p(vif));
727 /* Allocate a new station entry for the broadcast station to the given vif,
728 * and send it to the FW.
729 * Note that each P2P mac should have its own broadcast station.
731 * @mvm: the mvm component
732 * @vif: the interface to which the broadcast station is added
733 * @bsta: the broadcast station to add. */
734 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
736 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
737 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
740 lockdep_assert_held(&mvm->mutex);
742 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
746 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
749 iwl_mvm_dealloc_int_sta(mvm, bsta);
754 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
756 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
758 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
762 * Send the FW a request to remove the station from it's internal data
763 * structures, and in addition remove it from the local data structure.
765 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
769 lockdep_assert_held(&mvm->mutex);
771 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
773 iwl_mvm_dealloc_bcast_sta(mvm, vif);
778 #define IWL_MAX_RX_BA_SESSIONS 16
780 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
781 int tid, u16 ssn, bool start)
783 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
784 struct iwl_mvm_add_sta_cmd cmd = {};
788 lockdep_assert_held(&mvm->mutex);
790 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
791 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
795 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
796 cmd.sta_id = mvm_sta->sta_id;
797 cmd.add_modify = STA_MODE_MODIFY;
799 cmd.add_immediate_ba_tid = (u8) tid;
800 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
802 cmd.remove_immediate_ba_tid = (u8) tid;
804 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
805 STA_MODIFY_REMOVE_BA_TID;
807 status = ADD_STA_SUCCESS;
808 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
814 case ADD_STA_SUCCESS:
815 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
816 start ? "start" : "stopp");
818 case ADD_STA_IMMEDIATE_BA_FAILURE:
819 IWL_WARN(mvm, "RX BA Session refused by fw\n");
824 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
825 start ? "start" : "stopp", status);
831 mvm->rx_ba_sessions++;
832 else if (mvm->rx_ba_sessions > 0)
833 /* check that restart flow didn't zero the counter */
834 mvm->rx_ba_sessions--;
840 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
841 int tid, u8 queue, bool start)
843 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
844 struct iwl_mvm_add_sta_cmd cmd = {};
848 lockdep_assert_held(&mvm->mutex);
851 mvm_sta->tfd_queue_msk |= BIT(queue);
852 mvm_sta->tid_disable_agg &= ~BIT(tid);
854 mvm_sta->tfd_queue_msk &= ~BIT(queue);
855 mvm_sta->tid_disable_agg |= BIT(tid);
858 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
859 cmd.sta_id = mvm_sta->sta_id;
860 cmd.add_modify = STA_MODE_MODIFY;
861 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
862 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
863 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
865 status = ADD_STA_SUCCESS;
866 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
872 case ADD_STA_SUCCESS:
876 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
877 start ? "start" : "stopp", status);
884 const u8 tid_to_mac80211_ac[] = {
895 static const u8 tid_to_ucode_ac[] = {
906 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
907 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
909 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
910 struct iwl_mvm_tid_data *tid_data;
913 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
916 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
917 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
918 mvmsta->tid_data[tid].state);
922 lockdep_assert_held(&mvm->mutex);
924 for (txq_id = mvm->first_agg_queue;
925 txq_id <= mvm->last_agg_queue; txq_id++)
926 if (mvm->queue_to_mac80211[txq_id] ==
927 IWL_INVALID_MAC80211_QUEUE)
930 if (txq_id > mvm->last_agg_queue) {
931 IWL_ERR(mvm, "Failed to allocate agg queue\n");
935 spin_lock_bh(&mvmsta->lock);
937 /* possible race condition - we entered D0i3 while starting agg */
938 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
939 spin_unlock_bh(&mvmsta->lock);
940 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
944 /* the new tx queue is still connected to the same mac80211 queue */
945 mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]];
947 tid_data = &mvmsta->tid_data[tid];
948 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
949 tid_data->txq_id = txq_id;
950 *ssn = tid_data->ssn;
952 IWL_DEBUG_TX_QUEUES(mvm,
953 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
954 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
955 tid_data->next_reclaimed);
957 if (tid_data->ssn == tid_data->next_reclaimed) {
958 tid_data->state = IWL_AGG_STARTING;
959 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
961 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
964 spin_unlock_bh(&mvmsta->lock);
969 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
970 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
972 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
973 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
974 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
975 mvm->cfg->base_params->wd_timeout :
976 IWL_WATCHDOG_DISABLED;
977 int queue, fifo, ret;
980 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
981 != IWL_MAX_TID_COUNT);
983 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
985 spin_lock_bh(&mvmsta->lock);
987 queue = tid_data->txq_id;
988 tid_data->state = IWL_AGG_ON;
989 mvmsta->agg_tids |= BIT(tid);
990 tid_data->ssn = 0xffff;
991 spin_unlock_bh(&mvmsta->lock);
993 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
995 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
999 iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid,
1000 buf_size, ssn, wdg_timeout);
1003 * Even though in theory the peer could have different
1004 * aggregation reorder buffer sizes for different sessions,
1005 * our ucode doesn't allow for that and has a global limit
1006 * for each station. Therefore, use the minimum of all the
1007 * aggregation sessions and our default value.
1009 mvmsta->max_agg_bufsize =
1010 min(mvmsta->max_agg_bufsize, buf_size);
1011 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
1013 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
1016 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
1019 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1020 struct ieee80211_sta *sta, u16 tid)
1022 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1023 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1029 * If mac80211 is cleaning its state, then say that we finished since
1030 * our state has been cleared anyway.
1032 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1033 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1037 spin_lock_bh(&mvmsta->lock);
1039 txq_id = tid_data->txq_id;
1041 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
1042 mvmsta->sta_id, tid, txq_id, tid_data->state);
1044 mvmsta->agg_tids &= ~BIT(tid);
1046 switch (tid_data->state) {
1048 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1050 IWL_DEBUG_TX_QUEUES(mvm,
1051 "ssn = %d, next_recl = %d\n",
1052 tid_data->ssn, tid_data->next_reclaimed);
1054 /* There are still packets for this RA / TID in the HW */
1055 if (tid_data->ssn != tid_data->next_reclaimed) {
1056 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
1061 tid_data->ssn = 0xffff;
1062 tid_data->state = IWL_AGG_OFF;
1063 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1064 spin_unlock_bh(&mvmsta->lock);
1066 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1068 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1070 iwl_mvm_disable_txq(mvm, txq_id, 0);
1072 case IWL_AGG_STARTING:
1073 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1075 * The agg session has been stopped before it was set up. This
1076 * can happen when the AddBA timer times out for example.
1079 /* No barriers since we are under mutex */
1080 lockdep_assert_held(&mvm->mutex);
1081 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1083 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1084 tid_data->state = IWL_AGG_OFF;
1089 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1090 mvmsta->sta_id, tid, tid_data->state);
1092 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
1096 spin_unlock_bh(&mvmsta->lock);
1101 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1102 struct ieee80211_sta *sta, u16 tid)
1104 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1105 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1107 enum iwl_mvm_agg_state old_state;
1110 * First set the agg state to OFF to avoid calling
1111 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1113 spin_lock_bh(&mvmsta->lock);
1114 txq_id = tid_data->txq_id;
1115 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
1116 mvmsta->sta_id, tid, txq_id, tid_data->state);
1117 old_state = tid_data->state;
1118 tid_data->state = IWL_AGG_OFF;
1119 mvmsta->agg_tids &= ~BIT(tid);
1120 spin_unlock_bh(&mvmsta->lock);
1122 if (old_state >= IWL_AGG_ON) {
1123 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
1124 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
1126 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1128 iwl_mvm_disable_txq(mvm, tid_data->txq_id, 0);
1131 mvm->queue_to_mac80211[tid_data->txq_id] =
1132 IWL_INVALID_MAC80211_QUEUE;
1137 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
1141 lockdep_assert_held(&mvm->mutex);
1143 i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
1145 if (i == STA_KEY_MAX_NUM)
1146 return STA_KEY_IDX_INVALID;
1148 __set_bit(i, mvm->fw_key_table);
1153 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
1154 struct ieee80211_sta *sta)
1156 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1159 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1161 return mvm_sta->sta_id;
1165 * The device expects GTKs for station interfaces to be
1166 * installed as GTKs for the AP station. If we have no
1167 * station ID, then use AP's station ID.
1169 if (vif->type == NL80211_IFTYPE_STATION &&
1170 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
1171 return mvmvif->ap_sta_id;
1173 return IWL_MVM_STATION_COUNT;
1176 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
1177 struct iwl_mvm_sta *mvm_sta,
1178 struct ieee80211_key_conf *keyconf, bool mcast,
1179 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags)
1181 struct iwl_mvm_add_sta_key_cmd cmd = {};
1187 u8 sta_id = mvm_sta->sta_id;
1189 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1190 STA_KEY_FLG_KEYID_MSK;
1191 key_flags = cpu_to_le16(keyidx);
1192 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
1194 switch (keyconf->cipher) {
1195 case WLAN_CIPHER_SUITE_TKIP:
1196 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
1197 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
1198 for (i = 0; i < 5; i++)
1199 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1200 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1202 case WLAN_CIPHER_SUITE_CCMP:
1203 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
1204 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1206 case WLAN_CIPHER_SUITE_WEP104:
1207 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
1209 case WLAN_CIPHER_SUITE_WEP40:
1210 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
1211 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
1214 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
1215 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1219 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1221 cmd.key_offset = keyconf->hw_key_idx;
1222 cmd.key_flags = key_flags;
1223 cmd.sta_id = sta_id;
1225 status = ADD_STA_SUCCESS;
1226 if (cmd_flags & CMD_ASYNC)
1227 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
1230 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1234 case ADD_STA_SUCCESS:
1235 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1239 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1246 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1247 struct ieee80211_key_conf *keyconf,
1248 u8 sta_id, bool remove_key)
1250 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1252 /* verify the key details match the required command's expectations */
1253 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1254 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1255 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1258 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1259 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1262 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1264 struct ieee80211_key_seq seq;
1267 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1268 ieee80211_aes_cmac_calculate_k1_k2(keyconf,
1269 igtk_cmd.K1, igtk_cmd.K2);
1270 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1271 pn = seq.aes_cmac.pn;
1272 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1273 ((u64) pn[4] << 8) |
1274 ((u64) pn[3] << 16) |
1275 ((u64) pn[2] << 24) |
1276 ((u64) pn[1] << 32) |
1277 ((u64) pn[0] << 40));
1280 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1281 remove_key ? "removing" : "installing",
1284 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
1285 sizeof(igtk_cmd), &igtk_cmd);
1289 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1290 struct ieee80211_vif *vif,
1291 struct ieee80211_sta *sta)
1293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1298 if (vif->type == NL80211_IFTYPE_STATION &&
1299 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1300 u8 sta_id = mvmvif->ap_sta_id;
1301 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1302 lockdep_is_held(&mvm->mutex));
1310 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1311 struct ieee80211_vif *vif,
1312 struct ieee80211_sta *sta,
1313 struct ieee80211_key_conf *keyconf,
1316 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1319 struct ieee80211_key_seq seq;
1322 switch (keyconf->cipher) {
1323 case WLAN_CIPHER_SUITE_TKIP:
1324 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1325 /* get phase 1 key from mac80211 */
1326 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1327 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1328 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1329 seq.tkip.iv32, p1k, 0);
1331 case WLAN_CIPHER_SUITE_CCMP:
1332 case WLAN_CIPHER_SUITE_WEP40:
1333 case WLAN_CIPHER_SUITE_WEP104:
1334 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1338 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1345 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
1346 struct ieee80211_key_conf *keyconf,
1349 struct iwl_mvm_add_sta_key_cmd cmd = {};
1354 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1355 STA_KEY_FLG_KEYID_MSK);
1356 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1357 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1360 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1362 cmd.key_flags = key_flags;
1363 cmd.key_offset = keyconf->hw_key_idx;
1364 cmd.sta_id = sta_id;
1366 status = ADD_STA_SUCCESS;
1367 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1371 case ADD_STA_SUCCESS:
1372 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1376 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1383 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1384 struct ieee80211_vif *vif,
1385 struct ieee80211_sta *sta,
1386 struct ieee80211_key_conf *keyconf,
1387 bool have_key_offset)
1389 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1393 lockdep_assert_held(&mvm->mutex);
1395 /* Get the station id from the mvm local station table */
1396 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1397 if (sta_id == IWL_MVM_STATION_COUNT) {
1398 IWL_ERR(mvm, "Failed to find station id\n");
1402 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1403 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1408 * It is possible that the 'sta' parameter is NULL, and thus
1409 * there is a need to retrieve the sta from the local station table.
1412 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1413 lockdep_is_held(&mvm->mutex));
1414 if (IS_ERR_OR_NULL(sta)) {
1415 IWL_ERR(mvm, "Invalid station id\n");
1420 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1423 if (!have_key_offset) {
1425 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1426 * configure it there. As a result, this workaround exists to
1427 * let the caller set the key offset (hw_key_idx), see d3.c.
1429 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1430 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1434 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast);
1436 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1441 * For WEP, the same key is used for multicast and unicast. Upload it
1442 * again, using the same key offset, and now pointing the other one
1443 * to the same key slot (offset).
1444 * If this fails, remove the original as well.
1446 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1447 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
1448 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast);
1450 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1451 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1456 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1457 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1462 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1463 struct ieee80211_vif *vif,
1464 struct ieee80211_sta *sta,
1465 struct ieee80211_key_conf *keyconf)
1467 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1471 lockdep_assert_held(&mvm->mutex);
1473 /* Get the station id from the mvm local station table */
1474 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1476 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1477 keyconf->keyidx, sta_id);
1479 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1480 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1482 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
1483 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1484 keyconf->hw_key_idx);
1488 if (sta_id == IWL_MVM_STATION_COUNT) {
1489 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1494 * It is possible that the 'sta' parameter is NULL, and thus
1495 * there is a need to retrieve the sta from the local station table,
1496 * for example when a GTK is removed (where the sta_id will then be
1497 * the AP ID, and no station was passed by mac80211.)
1500 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1501 lockdep_is_held(&mvm->mutex));
1503 IWL_ERR(mvm, "Invalid station id\n");
1508 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1511 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1515 /* delete WEP key twice to get rid of (now useless) offset */
1516 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1517 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
1518 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
1523 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1524 struct ieee80211_vif *vif,
1525 struct ieee80211_key_conf *keyconf,
1526 struct ieee80211_sta *sta, u32 iv32,
1529 struct iwl_mvm_sta *mvm_sta;
1530 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1531 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1533 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
1539 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1540 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1546 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1547 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1548 iv32, phase1key, CMD_ASYNC);
1552 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1553 struct ieee80211_sta *sta)
1555 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1556 struct iwl_mvm_add_sta_cmd cmd = {
1557 .add_modify = STA_MODE_MODIFY,
1558 .sta_id = mvmsta->sta_id,
1559 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
1560 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1564 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1566 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1569 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1570 struct ieee80211_sta *sta,
1571 enum ieee80211_frame_release_type reason,
1572 u16 cnt, u16 tids, bool more_data,
1575 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1576 struct iwl_mvm_add_sta_cmd cmd = {
1577 .add_modify = STA_MODE_MODIFY,
1578 .sta_id = mvmsta->sta_id,
1579 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1580 .sleep_tx_count = cpu_to_le16(cnt),
1581 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1584 unsigned long _tids = tids;
1586 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1587 * Note that this field is reserved and unused by firmware not
1588 * supporting GO uAPSD, so it's safe to always do this.
1590 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
1591 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
1593 /* If we're releasing frames from aggregation queues then check if the
1594 * all queues combined that we're releasing frames from have
1595 * - more frames than the service period, in which case more_data
1597 * - fewer than 'cnt' frames, in which case we need to adjust the
1598 * firmware command (but do that unconditionally)
1601 int remaining = cnt;
1603 spin_lock_bh(&mvmsta->lock);
1604 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
1605 struct iwl_mvm_tid_data *tid_data;
1608 tid_data = &mvmsta->tid_data[tid];
1609 if (WARN(tid_data->state != IWL_AGG_ON &&
1610 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
1611 "TID %d state is %d\n",
1612 tid, tid_data->state)) {
1613 spin_unlock_bh(&mvmsta->lock);
1614 ieee80211_sta_eosp(sta);
1618 n_queued = iwl_mvm_tid_queued(tid_data);
1619 if (n_queued > remaining) {
1624 remaining -= n_queued;
1626 spin_unlock_bh(&mvmsta->lock);
1628 cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
1629 if (WARN_ON(cnt - remaining == 0)) {
1630 ieee80211_sta_eosp(sta);
1635 /* Note: this is ignored by firmware not supporting GO uAPSD */
1637 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
1639 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
1640 mvmsta->next_status_eosp = true;
1641 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
1643 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
1646 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1648 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1651 int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
1652 struct iwl_rx_cmd_buffer *rxb,
1653 struct iwl_device_cmd *cmd)
1655 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1656 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
1657 struct ieee80211_sta *sta;
1658 u32 sta_id = le32_to_cpu(notif->sta_id);
1660 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
1664 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1665 if (!IS_ERR_OR_NULL(sta))
1666 ieee80211_sta_eosp(sta);
1672 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
1673 struct iwl_mvm_sta *mvmsta, bool disable)
1675 struct iwl_mvm_add_sta_cmd cmd = {
1676 .add_modify = STA_MODE_MODIFY,
1677 .sta_id = mvmsta->sta_id,
1678 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
1679 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
1680 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1684 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX))
1687 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1689 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1692 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
1693 struct ieee80211_sta *sta,
1696 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1698 spin_lock_bh(&mvm_sta->lock);
1700 if (mvm_sta->disable_tx == disable) {
1701 spin_unlock_bh(&mvm_sta->lock);
1705 mvm_sta->disable_tx = disable;
1708 * Tell mac80211 to start/stop queueing tx for this station,
1709 * but don't stop queueing if there are still pending frames
1712 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
1713 ieee80211_sta_block_awake(mvm->hw, sta, disable);
1715 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
1717 spin_unlock_bh(&mvm_sta->lock);
1720 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
1721 struct iwl_mvm_vif *mvmvif,
1724 struct ieee80211_sta *sta;
1725 struct iwl_mvm_sta *mvm_sta;
1728 lockdep_assert_held(&mvm->mutex);
1730 /* Block/unblock all the stations of the given mvmvif */
1731 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1732 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1733 lockdep_is_held(&mvm->mutex));
1734 if (IS_ERR_OR_NULL(sta))
1737 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1738 if (mvm_sta->mac_id_n_color !=
1739 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
1742 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
1746 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1749 struct iwl_mvm_sta *mvmsta;
1753 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1755 if (!WARN_ON(!mvmsta))
1756 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);