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 - 2013 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
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43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #include <net/mac80211.h>
68 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm)
72 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
74 lockdep_assert_held(&mvm->mutex);
76 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
77 for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++)
78 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
79 lockdep_is_held(&mvm->mutex)))
81 return IWL_MVM_STATION_COUNT;
84 /* send station add/update command to firmware */
85 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
88 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
89 struct iwl_mvm_add_sta_cmd add_sta_cmd;
92 u32 agg_size = 0, mpdu_dens = 0;
94 memset(&add_sta_cmd, 0, sizeof(add_sta_cmd));
96 add_sta_cmd.sta_id = mvm_sta->sta_id;
97 add_sta_cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
99 add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
100 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
102 add_sta_cmd.add_modify = update ? 1 : 0;
104 add_sta_cmd.station_flags_msk |= cpu_to_le32(STA_FLG_FAT_EN_MSK |
105 STA_FLG_MIMO_EN_MSK);
107 switch (sta->bandwidth) {
108 case IEEE80211_STA_RX_BW_160:
109 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
111 case IEEE80211_STA_RX_BW_80:
112 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
114 case IEEE80211_STA_RX_BW_40:
115 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
117 case IEEE80211_STA_RX_BW_20:
118 if (sta->ht_cap.ht_supported)
119 add_sta_cmd.station_flags |=
120 cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
124 switch (sta->rx_nss) {
126 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
129 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
132 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
136 switch (sta->smps_mode) {
137 case IEEE80211_SMPS_AUTOMATIC:
138 case IEEE80211_SMPS_NUM_MODES:
141 case IEEE80211_SMPS_STATIC:
143 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
144 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
146 case IEEE80211_SMPS_DYNAMIC:
147 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
149 case IEEE80211_SMPS_OFF:
154 if (sta->ht_cap.ht_supported) {
155 add_sta_cmd.station_flags_msk |=
156 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
157 STA_FLG_AGG_MPDU_DENS_MSK);
159 mpdu_dens = sta->ht_cap.ampdu_density;
162 if (sta->vht_cap.vht_supported) {
163 agg_size = sta->vht_cap.cap &
164 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
166 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
167 } else if (sta->ht_cap.ht_supported) {
168 agg_size = sta->ht_cap.ampdu_factor;
171 add_sta_cmd.station_flags |=
172 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
173 add_sta_cmd.station_flags |=
174 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
176 status = ADD_STA_SUCCESS;
177 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd),
178 &add_sta_cmd, &status);
183 case ADD_STA_SUCCESS:
184 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
188 IWL_ERR(mvm, "ADD_STA failed\n");
195 int iwl_mvm_add_sta(struct iwl_mvm *mvm,
196 struct ieee80211_vif *vif,
197 struct ieee80211_sta *sta)
199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
200 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
203 lockdep_assert_held(&mvm->mutex);
205 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
206 sta_id = iwl_mvm_find_free_sta_id(mvm);
208 sta_id = mvm_sta->sta_id;
210 if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
213 spin_lock_init(&mvm_sta->lock);
215 mvm_sta->sta_id = sta_id;
216 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
219 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
221 /* HW restart, don't assume the memory has been zeroed */
222 atomic_set(&mvm_sta->pending_frames, 0);
223 mvm_sta->tid_disable_agg = 0;
224 mvm_sta->tfd_queue_msk = 0;
225 for (i = 0; i < IEEE80211_NUM_ACS; i++)
226 if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
227 mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
229 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
230 mvm_sta->tfd_queue_msk |= BIT(vif->cab_queue);
232 /* for HW restart - need to reset the seq_number etc... */
233 memset(mvm_sta->tid_data, 0, sizeof(mvm_sta->tid_data));
235 ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
239 /* The first station added is the AP, the others are TDLS STAs */
240 if (vif->type == NL80211_IFTYPE_STATION &&
241 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
242 mvmvif->ap_sta_id = sta_id;
244 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
249 int iwl_mvm_update_sta(struct iwl_mvm *mvm,
250 struct ieee80211_vif *vif,
251 struct ieee80211_sta *sta)
253 return iwl_mvm_sta_send_to_fw(mvm, sta, true);
256 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
259 struct iwl_mvm_add_sta_cmd cmd = {};
263 lockdep_assert_held(&mvm->mutex);
265 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
266 cmd.sta_id = mvmsta->sta_id;
267 cmd.add_modify = STA_MODE_MODIFY;
268 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
269 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
271 status = ADD_STA_SUCCESS;
272 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
278 case ADD_STA_SUCCESS:
279 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
284 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
293 * Remove a station from the FW table. Before sending the command to remove
294 * the station validate that the station is indeed known to the driver (sanity
297 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
299 struct ieee80211_sta *sta;
300 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
305 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
306 lockdep_is_held(&mvm->mutex));
308 /* Note: internal stations are marked as error values */
310 IWL_ERR(mvm, "Invalid station id\n");
314 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, CMD_SYNC,
315 sizeof(rm_sta_cmd), &rm_sta_cmd);
317 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
324 void iwl_mvm_sta_drained_wk(struct work_struct *wk)
326 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
330 * The mutex is needed because of the SYNC cmd, but not only: if the
331 * work would run concurrently with iwl_mvm_rm_sta, it would run before
332 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
333 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
336 mutex_lock(&mvm->mutex);
338 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
340 struct ieee80211_sta *sta =
341 rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
342 lockdep_is_held(&mvm->mutex));
344 /* This station is in use */
348 if (PTR_ERR(sta) == -EINVAL) {
349 IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
355 IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
360 WARN_ON(PTR_ERR(sta) != -EBUSY);
361 /* This station was removed and we waited until it got drained,
362 * we can now proceed and remove it.
364 ret = iwl_mvm_rm_sta_common(mvm, sta_id);
367 "Couldn't remove sta %d after it was drained\n",
371 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL);
372 clear_bit(sta_id, mvm->sta_drained);
375 mutex_unlock(&mvm->mutex);
378 int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
379 struct ieee80211_vif *vif,
380 struct ieee80211_sta *sta)
382 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
383 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
386 lockdep_assert_held(&mvm->mutex);
388 if (vif->type == NL80211_IFTYPE_STATION &&
389 mvmvif->ap_sta_id == mvm_sta->sta_id) {
390 /* flush its queues here since we are freeing mvm_sta */
391 ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
394 * Put a non-NULL since the fw station isn't removed.
395 * It will be removed after the MAC will be set as
398 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
401 /* if we are associated - we can't remove the AP STA now */
402 if (vif->bss_conf.assoc)
405 /* unassoc - go ahead - remove the AP STA now */
406 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
410 * There are frames pending on the AC queues for this station.
411 * We need to wait until all the frames are drained...
413 if (atomic_read(&mvm_sta->pending_frames)) {
414 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
415 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
418 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
419 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
425 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
426 struct ieee80211_vif *vif,
429 int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
431 lockdep_assert_held(&mvm->mutex);
433 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL);
437 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta,
440 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
441 sta->sta_id = iwl_mvm_find_free_sta_id(mvm);
442 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
446 sta->tfd_queue_msk = qmask;
448 /* put a non-NULL value so iterating over the stations won't stop */
449 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
453 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
455 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
456 memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
457 sta->sta_id = IWL_MVM_STATION_COUNT;
460 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
461 struct iwl_mvm_int_sta *sta,
463 u16 mac_id, u16 color)
465 struct iwl_mvm_add_sta_cmd cmd;
469 lockdep_assert_held(&mvm->mutex);
471 memset(&cmd, 0, sizeof(struct iwl_mvm_add_sta_cmd));
472 cmd.sta_id = sta->sta_id;
473 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
476 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
479 memcpy(cmd.addr, addr, ETH_ALEN);
481 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
487 case ADD_STA_SUCCESS:
488 IWL_DEBUG_INFO(mvm, "Internal station added.\n");
492 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
499 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
503 lockdep_assert_held(&mvm->mutex);
505 /* Add the aux station, but without any queues */
506 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, 0);
510 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
514 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
519 * Send the add station command for the vif's broadcast station.
520 * Assumes that the station was already allocated.
522 * @mvm: the mvm component
523 * @vif: the interface to which the broadcast station is added
524 * @bsta: the broadcast station to add.
526 int iwl_mvm_send_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
527 struct iwl_mvm_int_sta *bsta)
529 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
530 static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
532 lockdep_assert_held(&mvm->mutex);
534 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
537 return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
538 mvmvif->id, mvmvif->color);
541 /* Send the FW a request to remove the station from it's internal data
542 * structures, but DO NOT remove the entry from the local data structures. */
543 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm,
544 struct iwl_mvm_int_sta *bsta)
548 lockdep_assert_held(&mvm->mutex);
550 ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
552 IWL_WARN(mvm, "Failed sending remove station\n");
556 /* Allocate a new station entry for the broadcast station to the given vif,
557 * and send it to the FW.
558 * Note that each P2P mac should have its own broadcast station.
560 * @mvm: the mvm component
561 * @vif: the interface to which the broadcast station is added
562 * @bsta: the broadcast station to add. */
563 int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
564 struct iwl_mvm_int_sta *bsta)
566 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
567 static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
571 lockdep_assert_held(&mvm->mutex);
573 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
574 ret = iwl_mvm_allocate_int_sta(mvm, bsta, qmask);
578 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
579 mvmvif->id, mvmvif->color);
582 iwl_mvm_dealloc_int_sta(mvm, bsta);
587 * Send the FW a request to remove the station from it's internal data
588 * structures, and in addition remove it from the local data structure.
590 int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *bsta)
594 lockdep_assert_held(&mvm->mutex);
596 ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
600 iwl_mvm_dealloc_int_sta(mvm, bsta);
604 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
605 int tid, u16 ssn, bool start)
607 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
608 struct iwl_mvm_add_sta_cmd cmd = {};
612 lockdep_assert_held(&mvm->mutex);
614 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
615 cmd.sta_id = mvm_sta->sta_id;
616 cmd.add_modify = STA_MODE_MODIFY;
617 cmd.add_immediate_ba_tid = (u8) tid;
618 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
619 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
620 STA_MODIFY_REMOVE_BA_TID;
622 status = ADD_STA_SUCCESS;
623 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
629 case ADD_STA_SUCCESS:
630 IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
631 start ? "start" : "stopp");
633 case ADD_STA_IMMEDIATE_BA_FAILURE:
634 IWL_WARN(mvm, "RX BA Session refused by fw\n");
639 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
640 start ? "start" : "stopp", status);
647 static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
648 int tid, u8 queue, bool start)
650 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
651 struct iwl_mvm_add_sta_cmd cmd = {};
655 lockdep_assert_held(&mvm->mutex);
658 mvm_sta->tfd_queue_msk |= BIT(queue);
659 mvm_sta->tid_disable_agg &= ~BIT(tid);
661 mvm_sta->tfd_queue_msk &= ~BIT(queue);
662 mvm_sta->tid_disable_agg |= BIT(tid);
665 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
666 cmd.sta_id = mvm_sta->sta_id;
667 cmd.add_modify = STA_MODE_MODIFY;
668 cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
669 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
670 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
672 status = ADD_STA_SUCCESS;
673 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
679 case ADD_STA_SUCCESS:
683 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
684 start ? "start" : "stopp", status);
691 static const u8 tid_to_ac[] = {
702 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
703 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
705 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
706 struct iwl_mvm_tid_data *tid_data;
709 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
712 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
713 IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
714 mvmsta->tid_data[tid].state);
718 lockdep_assert_held(&mvm->mutex);
720 for (txq_id = IWL_MVM_FIRST_AGG_QUEUE;
721 txq_id <= IWL_MVM_LAST_AGG_QUEUE; txq_id++)
722 if (mvm->queue_to_mac80211[txq_id] ==
723 IWL_INVALID_MAC80211_QUEUE)
726 if (txq_id > IWL_MVM_LAST_AGG_QUEUE) {
727 IWL_ERR(mvm, "Failed to allocate agg queue\n");
731 /* the new tx queue is still connected to the same mac80211 queue */
732 mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_ac[tid]];
734 spin_lock_bh(&mvmsta->lock);
735 tid_data = &mvmsta->tid_data[tid];
736 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
737 tid_data->txq_id = txq_id;
738 *ssn = tid_data->ssn;
740 IWL_DEBUG_TX_QUEUES(mvm,
741 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
742 mvmsta->sta_id, tid, txq_id, tid_data->ssn,
743 tid_data->next_reclaimed);
745 if (tid_data->ssn == tid_data->next_reclaimed) {
746 tid_data->state = IWL_AGG_STARTING;
747 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
749 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
752 spin_unlock_bh(&mvmsta->lock);
757 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
758 struct ieee80211_sta *sta, u16 tid, u8 buf_size)
760 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
761 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
762 int queue, fifo, ret;
765 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
767 spin_lock_bh(&mvmsta->lock);
769 queue = tid_data->txq_id;
770 tid_data->state = IWL_AGG_ON;
771 tid_data->ssn = 0xffff;
772 spin_unlock_bh(&mvmsta->lock);
774 fifo = iwl_mvm_ac_to_tx_fifo[tid_to_ac[tid]];
776 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
780 iwl_trans_txq_enable(mvm->trans, queue, fifo, mvmsta->sta_id, tid,
784 * Even though in theory the peer could have different
785 * aggregation reorder buffer sizes for different sessions,
786 * our ucode doesn't allow for that and has a global limit
787 * for each station. Therefore, use the minimum of all the
788 * aggregation sessions and our default value.
790 mvmsta->max_agg_bufsize =
791 min(mvmsta->max_agg_bufsize, buf_size);
792 mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
794 if (mvm->cfg->ht_params->use_rts_for_aggregation) {
796 * switch to RTS/CTS if it is the prefer protection
797 * method for HT traffic
799 mvmsta->lq_sta.lq.flags |= LQ_FLAG_SET_STA_TLC_RTS_MSK;
801 * TODO: remove the TLC_RTS flag when we tear down the last
802 * AGG session (agg_tids_count in DVM)
806 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
809 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, CMD_ASYNC, false);
812 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
813 struct ieee80211_sta *sta, u16 tid)
815 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
816 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
822 * If mac80211 is cleaning its state, then say that we finished since
823 * our state has been cleared anyway.
825 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
826 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
830 spin_lock_bh(&mvmsta->lock);
832 txq_id = tid_data->txq_id;
834 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
835 mvmsta->sta_id, tid, txq_id, tid_data->state);
837 switch (tid_data->state) {
839 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
841 IWL_DEBUG_TX_QUEUES(mvm,
842 "ssn = %d, next_recl = %d\n",
843 tid_data->ssn, tid_data->next_reclaimed);
845 /* There are still packets for this RA / TID in the HW */
846 if (tid_data->ssn != tid_data->next_reclaimed) {
847 tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
852 tid_data->ssn = 0xffff;
853 iwl_trans_txq_disable(mvm->trans, txq_id);
855 case IWL_AGG_STARTING:
856 case IWL_EMPTYING_HW_QUEUE_ADDBA:
858 * The agg session has been stopped before it was set up. This
859 * can happen when the AddBA timer times out for example.
862 /* No barriers since we are under mutex */
863 lockdep_assert_held(&mvm->mutex);
864 mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
866 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
867 tid_data->state = IWL_AGG_OFF;
872 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
873 mvmsta->sta_id, tid, tid_data->state);
875 "\ttid_data->txq_id = %d\n", tid_data->txq_id);
879 spin_unlock_bh(&mvmsta->lock);
884 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
885 struct ieee80211_sta *sta, u16 tid)
887 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
888 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
892 * First set the agg state to OFF to avoid calling
893 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
895 spin_lock_bh(&mvmsta->lock);
896 txq_id = tid_data->txq_id;
897 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
898 mvmsta->sta_id, tid, txq_id, tid_data->state);
899 tid_data->state = IWL_AGG_OFF;
900 spin_unlock_bh(&mvmsta->lock);
902 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
903 IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
905 iwl_trans_txq_disable(mvm->trans, tid_data->txq_id);
906 mvm->queue_to_mac80211[tid_data->txq_id] =
907 IWL_INVALID_MAC80211_QUEUE;
912 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
916 lockdep_assert_held(&mvm->mutex);
918 i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
920 if (i == STA_KEY_MAX_NUM)
921 return STA_KEY_IDX_INVALID;
923 __set_bit(i, mvm->fw_key_table);
928 static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
929 struct ieee80211_sta *sta)
931 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
934 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
936 return mvm_sta->sta_id;
940 * The device expects GTKs for station interfaces to be
941 * installed as GTKs for the AP station. If we have no
942 * station ID, then use AP's station ID.
944 if (vif->type == NL80211_IFTYPE_STATION &&
945 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
946 return mvmvif->ap_sta_id;
948 return IWL_INVALID_STATION;
951 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
952 struct iwl_mvm_sta *mvm_sta,
953 struct ieee80211_key_conf *keyconf,
954 u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
958 struct iwl_mvm_add_sta_cmd cmd = {};
963 keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
964 STA_KEY_FLG_KEYID_MSK;
965 key_flags = cpu_to_le16(keyidx);
966 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
968 switch (keyconf->cipher) {
969 case WLAN_CIPHER_SUITE_TKIP:
970 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
971 cmd.key.tkip_rx_tsc_byte2 = tkip_iv32;
972 for (i = 0; i < 5; i++)
973 cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
974 memcpy(cmd.key.key, keyconf->key, keyconf->keylen);
976 case WLAN_CIPHER_SUITE_CCMP:
977 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
978 memcpy(cmd.key.key, keyconf->key, keyconf->keylen);
985 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
986 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
988 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
989 cmd.key.key_offset = keyconf->hw_key_idx;
990 cmd.key.key_flags = key_flags;
991 cmd.add_modify = STA_MODE_MODIFY;
992 cmd.modify_mask = STA_MODIFY_KEY;
995 status = ADD_STA_SUCCESS;
996 if (cmd_flags == CMD_SYNC)
997 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
1000 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,
1004 case ADD_STA_SUCCESS:
1005 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
1009 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
1016 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
1017 struct ieee80211_key_conf *keyconf,
1018 u8 sta_id, bool remove_key)
1020 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
1022 /* verify the key details match the required command's expectations */
1023 if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
1024 (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
1025 (keyconf->keyidx != 4 && keyconf->keyidx != 5)))
1028 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
1029 igtk_cmd.sta_id = cpu_to_le32(sta_id);
1032 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
1034 struct ieee80211_key_seq seq;
1037 memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
1038 ieee80211_aes_cmac_calculate_k1_k2(keyconf,
1039 igtk_cmd.K1, igtk_cmd.K2);
1040 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1041 pn = seq.aes_cmac.pn;
1042 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
1043 ((u64) pn[4] << 8) |
1044 ((u64) pn[3] << 16) |
1045 ((u64) pn[2] << 24) |
1046 ((u64) pn[1] << 32) |
1047 ((u64) pn[0] << 40));
1050 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
1051 remove_key ? "removing" : "installing",
1054 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, CMD_SYNC,
1055 sizeof(igtk_cmd), &igtk_cmd);
1059 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
1060 struct ieee80211_vif *vif,
1061 struct ieee80211_sta *sta)
1063 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1068 if (vif->type == NL80211_IFTYPE_STATION &&
1069 mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1070 u8 sta_id = mvmvif->ap_sta_id;
1071 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1072 lockdep_is_held(&mvm->mutex));
1080 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
1081 struct ieee80211_vif *vif,
1082 struct ieee80211_sta *sta,
1083 struct ieee80211_key_conf *keyconf,
1084 bool have_key_offset)
1086 struct iwl_mvm_sta *mvm_sta;
1089 struct ieee80211_key_seq seq;
1092 lockdep_assert_held(&mvm->mutex);
1094 /* Get the station id from the mvm local station table */
1095 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1096 if (sta_id == IWL_INVALID_STATION) {
1097 IWL_ERR(mvm, "Failed to find station id\n");
1101 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
1102 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
1107 * It is possible that the 'sta' parameter is NULL, and thus
1108 * there is a need to retrieve the sta from the local station table.
1111 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1112 lockdep_is_held(&mvm->mutex));
1113 if (IS_ERR_OR_NULL(sta)) {
1114 IWL_ERR(mvm, "Invalid station id\n");
1119 mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1120 if (WARN_ON_ONCE(mvm_sta->vif != vif))
1123 if (!have_key_offset) {
1125 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1126 * configure it there. As a result, this workaround exists to
1127 * let the caller set the key offset (hw_key_idx), see d3.c.
1129 keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
1130 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1134 switch (keyconf->cipher) {
1135 case WLAN_CIPHER_SUITE_TKIP:
1136 addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
1137 /* get phase 1 key from mac80211 */
1138 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1139 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1140 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1141 seq.tkip.iv32, p1k, CMD_SYNC);
1143 case WLAN_CIPHER_SUITE_CCMP:
1144 ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1148 IWL_ERR(mvm, "Unknown cipher %x\n", keyconf->cipher);
1153 __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1156 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1157 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1162 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
1163 struct ieee80211_vif *vif,
1164 struct ieee80211_sta *sta,
1165 struct ieee80211_key_conf *keyconf)
1167 struct iwl_mvm_sta *mvm_sta;
1168 struct iwl_mvm_add_sta_cmd cmd = {};
1173 lockdep_assert_held(&mvm->mutex);
1175 /* Get the station id from the mvm local station table */
1176 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1178 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
1179 keyconf->keyidx, sta_id);
1181 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1182 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
1184 ret = __test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
1186 IWL_ERR(mvm, "offset %d not used in fw key table.\n",
1187 keyconf->hw_key_idx);
1191 if (sta_id == IWL_INVALID_STATION) {
1192 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
1197 * It is possible that the 'sta' parameter is NULL, and thus
1198 * there is a need to retrieve the sta from the local station table,
1199 * for example when a GTK is removed (where the sta_id will then be
1200 * the AP ID, and no station was passed by mac80211.)
1203 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
1204 lockdep_is_held(&mvm->mutex));
1206 IWL_ERR(mvm, "Invalid station id\n");
1211 mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1212 if (WARN_ON_ONCE(mvm_sta->vif != vif))
1215 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
1216 STA_KEY_FLG_KEYID_MSK);
1217 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
1218 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
1220 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1221 key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
1223 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
1224 cmd.key.key_flags = key_flags;
1225 cmd.key.key_offset = keyconf->hw_key_idx;
1226 cmd.sta_id = sta_id;
1228 cmd.modify_mask = STA_MODIFY_KEY;
1229 cmd.add_modify = STA_MODE_MODIFY;
1231 status = ADD_STA_SUCCESS;
1232 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd),
1236 case ADD_STA_SUCCESS:
1237 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
1241 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
1248 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
1249 struct ieee80211_vif *vif,
1250 struct ieee80211_key_conf *keyconf,
1251 struct ieee80211_sta *sta, u32 iv32,
1254 struct iwl_mvm_sta *mvm_sta;
1255 u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
1257 if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION))
1263 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1264 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
1270 mvm_sta = (void *)sta->drv_priv;
1271 iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
1272 iv32, phase1key, CMD_ASYNC);
1276 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
1277 struct ieee80211_sta *sta)
1279 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
1280 struct iwl_mvm_add_sta_cmd cmd = {
1281 .add_modify = STA_MODE_MODIFY,
1282 .sta_id = mvmsta->sta_id,
1283 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1284 .sleep_state_flags = cpu_to_le16(STA_SLEEP_STATE_AWAKE),
1285 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1290 * Same modify mask for sleep_tx_count and sleep_state_flags but this
1291 * should be fine since if we set the STA as "awake", then
1292 * sleep_tx_count is not relevant.
1294 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1296 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
1299 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
1300 struct ieee80211_sta *sta,
1301 enum ieee80211_frame_release_type reason,
1304 u16 sleep_state_flags =
1305 (reason == IEEE80211_FRAME_RELEASE_UAPSD) ?
1306 STA_SLEEP_STATE_UAPSD : STA_SLEEP_STATE_PS_POLL;
1307 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
1308 struct iwl_mvm_add_sta_cmd cmd = {
1309 .add_modify = STA_MODE_MODIFY,
1310 .sta_id = mvmsta->sta_id,
1311 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
1312 .sleep_tx_count = cpu_to_le16(cnt),
1313 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
1315 * Same modify mask for sleep_tx_count and sleep_state_flags so
1316 * we must set the sleep_state_flags too.
1318 .sleep_state_flags = cpu_to_le16(sleep_state_flags),
1322 /* TODO: somehow the fw doesn't seem to take PS_POLL into account */
1323 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
1325 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);