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 = 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 (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 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
497 /* flush its queues here since we are freeing mvm_sta */
498 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
501 ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
502 mvm_sta->tfd_queue_msk);
505 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
507 /* if we are associated - we can't remove the AP STA now */
508 if (vif->bss_conf.assoc)
511 /* unassoc - go ahead - remove the AP STA now */
512 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
514 /* clear d0i3_ap_sta_id if no longer relevant */
515 if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
516 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
520 * This shouldn't happen - the TDLS channel switch should be canceled
521 * before the STA is removed.
523 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
524 mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
525 cancel_delayed_work(&mvm->tdls_cs.dwork);
529 * Make sure that the tx response code sees the station as -EBUSY and
530 * calls the drain worker.
532 spin_lock_bh(&mvm_sta->lock);
534 * There are frames pending on the AC queues for this station.
535 * We need to wait until all the frames are drained...
537 if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
538 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
540 spin_unlock_bh(&mvm_sta->lock);
542 /* disable TDLS sta queues on drain complete */
544 mvm->tfd_drained[mvm_sta->sta_id] =
545 mvm_sta->tfd_queue_msk;
546 IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
550 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
552 spin_unlock_bh(&mvm_sta->lock);
555 iwl_mvm_tdls_sta_deinit(mvm, sta);
557 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
558 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
564 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
565 struct ieee80211_vif *vif,
568 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
570 lockdep_assert_held(&mvm->mutex);
572 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
576 static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
577 struct iwl_mvm_int_sta *sta,
578 u32 qmask, enum nl80211_iftype iftype)
580 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
581 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
582 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
586 sta->tfd_queue_msk = qmask;
588 /* put a non-NULL value so iterating over the stations won't stop */
589 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
593 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
594 struct iwl_mvm_int_sta *sta)
596 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
597 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
598 sta->sta_id = IWL_MVM_STATION_COUNT;
601 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
602 struct iwl_mvm_int_sta *sta,
604 u16 mac_id, u16 color)
606 struct iwl_mvm_add_sta_cmd cmd;
610 lockdep_assert_held(&mvm->mutex);
612 memset(&cmd, 0, sizeof(cmd));
613 cmd.sta_id = sta->sta_id;
614 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
617 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
620 memcpy(cmd.addr, addr, ETH_ALEN);
622 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
628 case ADD_STA_SUCCESS:
629 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
633 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
640 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
642 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
643 mvm->cfg->base_params->wd_timeout :
644 IWL_WATCHDOG_DISABLED;
647 lockdep_assert_held(&mvm->mutex);
649 /* Map Aux queue to fifo - needs to happen before adding Aux station */
650 iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue,
651 IWL_MVM_TX_FIFO_MCAST, wdg_timeout);
653 /* Allocate aux station and assign to it the aux queue */
654 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
655 NL80211_IFTYPE_UNSPECIFIED);
659 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
663 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
667 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
669 lockdep_assert_held(&mvm->mutex);
671 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
675 * Send the add station command for the vif's broadcast station.
676 * Assumes that the station was already allocated.
678 * @mvm: the mvm component
679 * @vif: the interface to which the broadcast station is added
680 * @bsta: the broadcast station to add.
682 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
684 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
685 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
686 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
687 const u8 *baddr = _baddr;
689 lockdep_assert_held(&mvm->mutex);
691 if (vif->type == NL80211_IFTYPE_ADHOC)
692 baddr = vif->bss_conf.bssid;
694 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
697 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
698 mvmvif->id, mvmvif->color);
701 /* Send the FW a request to remove the station from it's internal data
702 * structures, but DO NOT remove the entry from the local data structures. */
703 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
705 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
708 lockdep_assert_held(&mvm->mutex);
710 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
712 IWL_WARN(mvm, "Failed sending remove station\n");
716 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
718 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
721 lockdep_assert_held(&mvm->mutex);
723 qmask = iwl_mvm_mac_get_queues_mask(vif);
726 * The firmware defines the TFD queue mask to only be relevant
727 * for *unicast* queues, so the multicast (CAB) queue shouldn't
730 if (vif->type == NL80211_IFTYPE_AP)
731 qmask &= ~BIT(vif->cab_queue);
733 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
734 ieee80211_vif_type_p2p(vif));
737 /* Allocate a new station entry for the broadcast station to the given vif,
738 * and send it to the FW.
739 * Note that each P2P mac should have its own broadcast station.
741 * @mvm: the mvm component
742 * @vif: the interface to which the broadcast station is added
743 * @bsta: the broadcast station to add. */
744 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
747 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
750 lockdep_assert_held(&mvm->mutex);
752 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
756 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
759 iwl_mvm_dealloc_int_sta(mvm, bsta);
764 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
768 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
772 * Send the FW a request to remove the station from it's internal data
773 * structures, and in addition remove it from the local data structure.
775 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
779 lockdep_assert_held(&mvm->mutex);
781 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
783 iwl_mvm_dealloc_bcast_sta(mvm, vif);
788 #define IWL_MAX_RX_BA_SESSIONS 16
790 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
791 int tid, u16 ssn, bool start)
793 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
794 struct iwl_mvm_add_sta_cmd cmd = {};
798 lockdep_assert_held(&mvm->mutex);
800 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
801 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
805 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
806 cmd.sta_id = mvm_sta->sta_id;
807 cmd.add_modify = STA_MODE_MODIFY;
809 cmd.add_immediate_ba_tid = (u8) tid;
810 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
812 cmd.remove_immediate_ba_tid = (u8) tid;
814 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
815 STA_MODIFY_REMOVE_BA_TID;
817 status = ADD_STA_SUCCESS;
818 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
824 case ADD_STA_SUCCESS:
825 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
826 start ? "start" : "stopp");
828 case ADD_STA_IMMEDIATE_BA_FAILURE:
829 IWL_WARN(mvm, "RX BA Session refused by fw\n");
834 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
835 start ? "start" : "stopp", status);
841 mvm->rx_ba_sessions++;
842 else if (mvm->rx_ba_sessions > 0)
843 /* check that restart flow didn't zero the counter */
844 mvm->rx_ba_sessions--;
850 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
851 int tid, u8 queue, bool start)
853 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
854 struct iwl_mvm_add_sta_cmd cmd = {};
858 lockdep_assert_held(&mvm->mutex);
861 mvm_sta->tfd_queue_msk |= BIT(queue);
862 mvm_sta->tid_disable_agg &= ~BIT(tid);
864 mvm_sta->tfd_queue_msk &= ~BIT(queue);
865 mvm_sta->tid_disable_agg |= BIT(tid);
868 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
869 cmd.sta_id = mvm_sta->sta_id;
870 cmd.add_modify = STA_MODE_MODIFY;
871 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
872 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
873 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
875 status = ADD_STA_SUCCESS;
876 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
882 case ADD_STA_SUCCESS:
886 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
887 start ? "start" : "stopp", status);
894 const u8 tid_to_mac80211_ac[] = {
905 static const u8 tid_to_ucode_ac[] = {
916 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
917 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
919 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
920 struct iwl_mvm_tid_data *tid_data;
923 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
926 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
927 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
928 mvmsta->tid_data[tid].state);
932 lockdep_assert_held(&mvm->mutex);
934 for (txq_id = mvm->first_agg_queue;
935 txq_id <= mvm->last_agg_queue; txq_id++)
936 if (mvm->queue_to_mac80211[txq_id] ==
937 IWL_INVALID_MAC80211_QUEUE)
940 if (txq_id > mvm->last_agg_queue) {
941 IWL_ERR(mvm, "Failed to allocate agg queue\n");
945 spin_lock_bh(&mvmsta->lock);
947 /* possible race condition - we entered D0i3 while starting agg */
948 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
949 spin_unlock_bh(&mvmsta->lock);
950 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
954 /* the new tx queue is still connected to the same mac80211 queue */
955 mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]];
957 tid_data = &mvmsta->tid_data[tid];
958 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
959 tid_data->txq_id = txq_id;
960 *ssn = tid_data->ssn;
962 IWL_DEBUG_TX_QUEUES(mvm,
963 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
964 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
965 tid_data->next_reclaimed);
967 if (tid_data->ssn == tid_data->next_reclaimed) {
968 tid_data->state = IWL_AGG_STARTING;
969 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
971 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
974 spin_unlock_bh(&mvmsta->lock);
979 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
980 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
982 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
983 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
984 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
985 mvm->cfg->base_params->wd_timeout :
986 IWL_WATCHDOG_DISABLED;
987 int queue, fifo, ret;
990 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
991 != IWL_MAX_TID_COUNT);
993 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
995 spin_lock_bh(&mvmsta->lock);
997 queue = tid_data->txq_id;
998 tid_data->state = IWL_AGG_ON;
999 mvmsta->agg_tids |= BIT(tid);
1000 tid_data->ssn = 0xffff;
1001 spin_unlock_bh(&mvmsta->lock);
1003 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
1005 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
1009 iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid,
1010 buf_size, ssn, wdg_timeout);
1013 * Even though in theory the peer could have different
1014 * aggregation reorder buffer sizes for different sessions,
1015 * our ucode doesn't allow for that and has a global limit
1016 * for each station. Therefore, use the minimum of all the
1017 * aggregation sessions and our default value.
1019 mvmsta->max_agg_bufsize =
1020 min(mvmsta->max_agg_bufsize, buf_size);
1021 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
1023 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
1026 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
1029 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1030 struct ieee80211_sta *sta, u16 tid)
1032 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1033 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1039 * If mac80211 is cleaning its state, then say that we finished since
1040 * our state has been cleared anyway.
1042 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1043 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1047 spin_lock_bh(&mvmsta->lock);
1049 txq_id = tid_data->txq_id;
1051 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
1052 mvmsta->sta_id, tid, txq_id, tid_data->state);
1054 mvmsta->agg_tids &= ~BIT(tid);
1056 switch (tid_data->state) {
1058 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
1060 IWL_DEBUG_TX_QUEUES(mvm,
1061 "ssn = %d, next_recl = %d\n",
1062 tid_data->ssn, tid_data->next_reclaimed);
1064 /* There are still packets for this RA / TID in the HW */
1065 if (tid_data->ssn != tid_data->next_reclaimed) {
1066 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
1071 tid_data->ssn = 0xffff;
1072 tid_data->state = IWL_AGG_OFF;
1073 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1074 spin_unlock_bh(&mvmsta->lock);
1076 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1078 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1080 iwl_mvm_disable_txq(mvm, txq_id, 0);
1082 case IWL_AGG_STARTING:
1083 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1085 * The agg session has been stopped before it was set up. This
1086 * can happen when the AddBA timer times out for example.
1089 /* No barriers since we are under mutex */
1090 lockdep_assert_held(&mvm->mutex);
1091 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
1093 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1094 tid_data->state = IWL_AGG_OFF;
1099 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1100 mvmsta->sta_id, tid, tid_data->state);
1102 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
1106 spin_unlock_bh(&mvmsta->lock);
1111 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1112 struct ieee80211_sta *sta, u16 tid)
1114 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1115 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1117 enum iwl_mvm_agg_state old_state;
1120 * First set the agg state to OFF to avoid calling
1121 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1123 spin_lock_bh(&mvmsta->lock);
1124 txq_id = tid_data->txq_id;
1125 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
1126 mvmsta->sta_id, tid, txq_id, tid_data->state);
1127 old_state = tid_data->state;
1128 tid_data->state = IWL_AGG_OFF;
1129 mvmsta->agg_tids &= ~BIT(tid);
1130 spin_unlock_bh(&mvmsta->lock);
1132 if (old_state >= IWL_AGG_ON) {
1133 iwl_mvm_drain_sta(mvm, mvmsta, true);
1134 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
1135 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
1136 iwl_trans_wait_tx_queue_empty(mvm->trans,
1137 mvmsta->tfd_queue_msk);
1138 iwl_mvm_drain_sta(mvm, mvmsta, false);
1140 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
1142 iwl_mvm_disable_txq(mvm, tid_data->txq_id, 0);
1145 mvm->queue_to_mac80211[tid_data->txq_id] =
1146 IWL_INVALID_MAC80211_QUEUE;
1151 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
1155 lockdep_assert_held(&mvm->mutex);
1157 i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
1159 if (i == STA_KEY_MAX_NUM)
1160 return STA_KEY_IDX_INVALID;
1162 __set_bit(i, mvm->fw_key_table);
1167 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
1168 struct ieee80211_sta *sta)
1170 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1173 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1175 return mvm_sta->sta_id;
1179 * The device expects GTKs for station interfaces to be
1180 * installed as GTKs for the AP station. If we have no
1181 * station ID, then use AP's station ID.
1183 if (vif->type == NL80211_IFTYPE_STATION &&
1184 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
1185 return mvmvif->ap_sta_id;
1187 return IWL_MVM_STATION_COUNT;
1190 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
1191 struct iwl_mvm_sta *mvm_sta,
1192 struct ieee80211_key_conf *keyconf, bool mcast,
1193 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags)
1195 struct iwl_mvm_add_sta_key_cmd cmd = {};
1201 u8 sta_id = mvm_sta->sta_id;
1203 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1204 STA_KEY_FLG_KEYID_MSK;
1205 key_flags = cpu_to_le16(keyidx);
1206 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
1208 switch (keyconf->cipher) {
1209 case WLAN_CIPHER_SUITE_TKIP:
1210 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
1211 cmd.tkip_rx_tsc_byte2 = tkip_iv32;
1212 for (i = 0; i < 5; i++)
1213 cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1214 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1216 case WLAN_CIPHER_SUITE_CCMP:
1217 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
1218 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1220 case WLAN_CIPHER_SUITE_WEP104:
1221 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
1223 case WLAN_CIPHER_SUITE_WEP40:
1224 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
1225 memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
1228 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
1229 memcpy(cmd.key, keyconf->key, keyconf->keylen);
1233 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1235 cmd.key_offset = keyconf->hw_key_idx;
1236 cmd.key_flags = key_flags;
1237 cmd.sta_id = sta_id;
1239 status = ADD_STA_SUCCESS;
1240 if (cmd_flags & CMD_ASYNC)
1241 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
1244 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1248 case ADD_STA_SUCCESS:
1249 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1253 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1260 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1261 struct ieee80211_key_conf *keyconf,
1262 u8 sta_id, bool remove_key)
1264 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1266 /* verify the key details match the required command's expectations */
1267 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1268 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1269 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1272 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1273 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1276 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1278 struct ieee80211_key_seq seq;
1281 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1282 ieee80211_aes_cmac_calculate_k1_k2(keyconf,
1283 igtk_cmd.K1, igtk_cmd.K2);
1284 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1285 pn = seq.aes_cmac.pn;
1286 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1287 ((u64) pn[4] << 8) |
1288 ((u64) pn[3] << 16) |
1289 ((u64) pn[2] << 24) |
1290 ((u64) pn[1] << 32) |
1291 ((u64) pn[0] << 40));
1294 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1295 remove_key ? "removing" : "installing",
1298 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,
1299 sizeof(igtk_cmd), &igtk_cmd);
1303 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1304 struct ieee80211_vif *vif,
1305 struct ieee80211_sta *sta)
1307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1312 if (vif->type == NL80211_IFTYPE_STATION &&
1313 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1314 u8 sta_id = mvmvif->ap_sta_id;
1315 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1316 lockdep_is_held(&mvm->mutex));
1324 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1325 struct ieee80211_vif *vif,
1326 struct ieee80211_sta *sta,
1327 struct ieee80211_key_conf *keyconf,
1330 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1333 struct ieee80211_key_seq seq;
1336 switch (keyconf->cipher) {
1337 case WLAN_CIPHER_SUITE_TKIP:
1338 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1339 /* get phase 1 key from mac80211 */
1340 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1341 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1342 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1343 seq.tkip.iv32, p1k, 0);
1345 case WLAN_CIPHER_SUITE_CCMP:
1346 case WLAN_CIPHER_SUITE_WEP40:
1347 case WLAN_CIPHER_SUITE_WEP104:
1348 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1352 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1359 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
1360 struct ieee80211_key_conf *keyconf,
1363 struct iwl_mvm_add_sta_key_cmd cmd = {};
1368 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1369 STA_KEY_FLG_KEYID_MSK);
1370 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1371 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1374 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1376 cmd.key_flags = key_flags;
1377 cmd.key_offset = keyconf->hw_key_idx;
1378 cmd.sta_id = sta_id;
1380 status = ADD_STA_SUCCESS;
1381 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
1385 case ADD_STA_SUCCESS:
1386 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1390 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1397 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1398 struct ieee80211_vif *vif,
1399 struct ieee80211_sta *sta,
1400 struct ieee80211_key_conf *keyconf,
1401 bool have_key_offset)
1403 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1407 lockdep_assert_held(&mvm->mutex);
1409 /* Get the station id from the mvm local station table */
1410 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1411 if (sta_id == IWL_MVM_STATION_COUNT) {
1412 IWL_ERR(mvm, "Failed to find station id\n");
1416 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1417 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1422 * It is possible that the 'sta' parameter is NULL, and thus
1423 * there is a need to retrieve the sta from the local station table.
1426 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1427 lockdep_is_held(&mvm->mutex));
1428 if (IS_ERR_OR_NULL(sta)) {
1429 IWL_ERR(mvm, "Invalid station id\n");
1434 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1437 if (!have_key_offset) {
1439 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1440 * configure it there. As a result, this workaround exists to
1441 * let the caller set the key offset (hw_key_idx), see d3.c.
1443 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1444 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1448 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast);
1450 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1455 * For WEP, the same key is used for multicast and unicast. Upload it
1456 * again, using the same key offset, and now pointing the other one
1457 * to the same key slot (offset).
1458 * If this fails, remove the original as well.
1460 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1461 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
1462 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast);
1464 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1465 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1470 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1471 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1476 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1477 struct ieee80211_vif *vif,
1478 struct ieee80211_sta *sta,
1479 struct ieee80211_key_conf *keyconf)
1481 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1485 lockdep_assert_held(&mvm->mutex);
1487 /* Get the station id from the mvm local station table */
1488 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1490 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1491 keyconf->keyidx, sta_id);
1493 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1494 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1496 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
1497 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1498 keyconf->hw_key_idx);
1502 if (sta_id == IWL_MVM_STATION_COUNT) {
1503 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1508 * It is possible that the 'sta' parameter is NULL, and thus
1509 * there is a need to retrieve the sta from the local station table,
1510 * for example when a GTK is removed (where the sta_id will then be
1511 * the AP ID, and no station was passed by mac80211.)
1514 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1515 lockdep_is_held(&mvm->mutex));
1517 IWL_ERR(mvm, "Invalid station id\n");
1522 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
1525 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
1529 /* delete WEP key twice to get rid of (now useless) offset */
1530 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1531 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
1532 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
1537 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1538 struct ieee80211_vif *vif,
1539 struct ieee80211_key_conf *keyconf,
1540 struct ieee80211_sta *sta, u32 iv32,
1543 struct iwl_mvm_sta *mvm_sta;
1544 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1545 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
1547 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
1553 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1554 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1560 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1561 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
1562 iv32, phase1key, CMD_ASYNC);
1566 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1567 struct ieee80211_sta *sta)
1569 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1570 struct iwl_mvm_add_sta_cmd cmd = {
1571 .add_modify = STA_MODE_MODIFY,
1572 .sta_id = mvmsta->sta_id,
1573 .station_flags_msk = cpu_to_le32(STA_FLG_PS),
1574 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1578 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1580 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1583 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1584 struct ieee80211_sta *sta,
1585 enum ieee80211_frame_release_type reason,
1586 u16 cnt, u16 tids, bool more_data,
1589 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1590 struct iwl_mvm_add_sta_cmd cmd = {
1591 .add_modify = STA_MODE_MODIFY,
1592 .sta_id = mvmsta->sta_id,
1593 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1594 .sleep_tx_count = cpu_to_le16(cnt),
1595 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1598 unsigned long _tids = tids;
1600 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1601 * Note that this field is reserved and unused by firmware not
1602 * supporting GO uAPSD, so it's safe to always do this.
1604 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
1605 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
1607 /* If we're releasing frames from aggregation queues then check if the
1608 * all queues combined that we're releasing frames from have
1609 * - more frames than the service period, in which case more_data
1611 * - fewer than 'cnt' frames, in which case we need to adjust the
1612 * firmware command (but do that unconditionally)
1615 int remaining = cnt;
1617 spin_lock_bh(&mvmsta->lock);
1618 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
1619 struct iwl_mvm_tid_data *tid_data;
1622 tid_data = &mvmsta->tid_data[tid];
1623 if (WARN(tid_data->state != IWL_AGG_ON &&
1624 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
1625 "TID %d state is %d\n",
1626 tid, tid_data->state)) {
1627 spin_unlock_bh(&mvmsta->lock);
1628 ieee80211_sta_eosp(sta);
1632 n_queued = iwl_mvm_tid_queued(tid_data);
1633 if (n_queued > remaining) {
1638 remaining -= n_queued;
1640 spin_unlock_bh(&mvmsta->lock);
1642 cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
1643 if (WARN_ON(cnt - remaining == 0)) {
1644 ieee80211_sta_eosp(sta);
1649 /* Note: this is ignored by firmware not supporting GO uAPSD */
1651 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
1653 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
1654 mvmsta->next_status_eosp = true;
1655 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
1657 cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
1660 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1662 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1665 int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
1666 struct iwl_rx_cmd_buffer *rxb,
1667 struct iwl_device_cmd *cmd)
1669 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1670 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
1671 struct ieee80211_sta *sta;
1672 u32 sta_id = le32_to_cpu(notif->sta_id);
1674 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
1678 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1679 if (!IS_ERR_OR_NULL(sta))
1680 ieee80211_sta_eosp(sta);
1686 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
1687 struct iwl_mvm_sta *mvmsta, bool disable)
1689 struct iwl_mvm_add_sta_cmd cmd = {
1690 .add_modify = STA_MODE_MODIFY,
1691 .sta_id = mvmsta->sta_id,
1692 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
1693 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
1694 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1698 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1700 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1703 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
1704 struct ieee80211_sta *sta,
1707 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1709 spin_lock_bh(&mvm_sta->lock);
1711 if (mvm_sta->disable_tx == disable) {
1712 spin_unlock_bh(&mvm_sta->lock);
1716 mvm_sta->disable_tx = disable;
1719 * Tell mac80211 to start/stop queueing tx for this station,
1720 * but don't stop queueing if there are still pending frames
1723 if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
1724 ieee80211_sta_block_awake(mvm->hw, sta, disable);
1726 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
1728 spin_unlock_bh(&mvm_sta->lock);
1731 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
1732 struct iwl_mvm_vif *mvmvif,
1735 struct ieee80211_sta *sta;
1736 struct iwl_mvm_sta *mvm_sta;
1739 lockdep_assert_held(&mvm->mutex);
1741 /* Block/unblock all the stations of the given mvmvif */
1742 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1743 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1744 lockdep_is_held(&mvm->mutex));
1745 if (IS_ERR_OR_NULL(sta))
1748 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1749 if (mvm_sta->mac_id_n_color !=
1750 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
1753 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
1757 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1760 struct iwl_mvm_sta *mvmsta;
1764 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1766 if (!WARN_ON(!mvmsta))
1767 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);