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
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49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
66 #include <linux/etherdevice.h>
67 #include <net/mac80211.h>
72 #include "time-event.h"
74 const u8 iwl_mvm_ac_to_tx_fifo[] = {
81 struct iwl_mvm_mac_iface_iterator_data {
83 struct ieee80211_vif *vif;
84 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
85 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
87 enum iwl_tsf_id preferred_tsf;
91 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
92 struct ieee80211_vif *vif)
94 struct iwl_mvm_mac_iface_iterator_data *data = _data;
95 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
98 /* Skip the interface for which we are trying to assign a tsf_id */
103 * The TSF is a hardware/firmware resource, there are 4 and
104 * the driver should assign and free them as needed. However,
105 * there are cases where 2 MACs should share the same TSF ID
106 * for the purpose of clock sync, an optimization to avoid
107 * clock drift causing overlapping TBTTs/DTIMs for a GO and
108 * client in the system.
110 * The firmware will decide according to the MAC type which
111 * will be the master and slave. Clients that need to sync
112 * with a remote station will be the master, and an AP or GO
115 * Depending on the new interface type it can be slaved to
116 * or become the master of an existing interface.
118 switch (data->vif->type) {
119 case NL80211_IFTYPE_STATION:
121 * The new interface is a client, so if the one we're iterating
122 * is an AP, and the beacon interval of the AP is a multiple or
123 * divisor of the beacon interval of the client, the same TSF
124 * should be used to avoid drift between the new client and
125 * existing AP. The existing AP will get drift updates from the
126 * new client context in this case.
128 if (vif->type != NL80211_IFTYPE_AP ||
129 data->preferred_tsf != NUM_TSF_IDS ||
130 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
133 min_bi = min(data->vif->bss_conf.beacon_int,
134 vif->bss_conf.beacon_int);
139 if ((data->vif->bss_conf.beacon_int -
140 vif->bss_conf.beacon_int) % min_bi == 0) {
141 data->preferred_tsf = mvmvif->tsf_id;
146 case NL80211_IFTYPE_AP:
148 * The new interface is AP/GO, so if its beacon interval is a
149 * multiple or a divisor of the beacon interval of an existing
150 * interface, it should get drift updates from an existing
151 * client or use the same TSF as an existing GO. There's no
152 * drift between TSFs internally but if they used different
153 * TSFs then a new client MAC could update one of them and
154 * cause drift that way.
156 if ((vif->type != NL80211_IFTYPE_AP &&
157 vif->type != NL80211_IFTYPE_STATION) ||
158 data->preferred_tsf != NUM_TSF_IDS ||
159 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
162 min_bi = min(data->vif->bss_conf.beacon_int,
163 vif->bss_conf.beacon_int);
168 if ((data->vif->bss_conf.beacon_int -
169 vif->bss_conf.beacon_int) % min_bi == 0) {
170 data->preferred_tsf = mvmvif->tsf_id;
176 * For all other interface types there's no need to
177 * take drift into account. Either they're exclusive
178 * like IBSS and monitor, or we don't care much about
179 * their TSF (like P2P Device), but we won't be able
180 * to share the TSF resource.
186 * Unless we exited above, we can't share the TSF resource
187 * that the virtual interface we're iterating over is using
188 * with the new one, so clear the available bit and if this
189 * was the preferred one, reset that as well.
191 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
193 if (data->preferred_tsf == mvmvif->tsf_id)
194 data->preferred_tsf = NUM_TSF_IDS;
198 * Get the mask of the queues used by the vif
200 u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
201 struct ieee80211_vif *vif)
205 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
206 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
208 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
209 qmask |= BIT(vif->hw_queue[ac]);
211 if (vif->type == NL80211_IFTYPE_AP)
212 qmask |= BIT(vif->cab_queue);
217 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
218 struct ieee80211_vif *vif)
220 struct iwl_mvm_mac_iface_iterator_data *data = _data;
221 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
223 /* Iterator may already find the interface being added -- skip it */
224 if (vif == data->vif) {
225 data->found_vif = true;
229 /* Mark the queues used by the vif */
230 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(data->mvm, vif);
232 /* Mark MAC IDs as used by clearing the available bit, and
233 * (below) mark TSFs as used if their existing use is not
234 * compatible with the new interface type.
235 * No locking or atomic bit operations are needed since the
236 * data is on the stack of the caller function.
238 __clear_bit(mvmvif->id, data->available_mac_ids);
240 /* find a suitable tsf_id */
241 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
244 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
245 struct ieee80211_vif *vif)
247 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
248 struct iwl_mvm_mac_iface_iterator_data data = {
251 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
252 /* no preference yet */
253 .preferred_tsf = NUM_TSF_IDS,
256 ieee80211_iterate_active_interfaces_atomic(
257 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
258 iwl_mvm_mac_tsf_id_iter, &data);
260 if (data.preferred_tsf != NUM_TSF_IDS)
261 mvmvif->tsf_id = data.preferred_tsf;
262 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
263 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
267 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
268 struct ieee80211_vif *vif)
270 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
271 struct iwl_mvm_mac_iface_iterator_data data = {
274 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
275 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
276 /* no preference yet */
277 .preferred_tsf = NUM_TSF_IDS,
279 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
280 BIT(mvm->aux_queue) |
281 BIT(IWL_MVM_CMD_QUEUE),
286 unsigned long used_hw_queues;
289 * Allocate a MAC ID and a TSF for this MAC, along with the queues
290 * and other resources.
294 * Before the iterator, we start with all MAC IDs and TSFs available.
296 * During iteration, all MAC IDs are cleared that are in use by other
297 * virtual interfaces, and all TSF IDs are cleared that can't be used
298 * by this new virtual interface because they're used by an interface
299 * that can't share it with the new one.
300 * At the same time, we check if there's a preferred TSF in the case
301 * that we should share it with another interface.
304 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
306 case NL80211_IFTYPE_ADHOC:
308 case NL80211_IFTYPE_STATION:
313 __clear_bit(0, data.available_mac_ids);
316 ieee80211_iterate_active_interfaces_atomic(
317 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
318 iwl_mvm_mac_iface_iterator, &data);
321 * In the case we're getting here during resume, it's similar to
322 * firmware restart, and with RESUME_ALL the iterator will find
323 * the vif being added already.
324 * We don't want to reassign any IDs in either case since doing
325 * so would probably assign different IDs (as interfaces aren't
326 * necessarily added in the same order), but the old IDs were
327 * preserved anyway, so skip ID assignment for both resume and
333 /* Therefore, in recovery, we can't get here */
334 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
337 mvmvif->id = find_first_bit(data.available_mac_ids,
338 NUM_MAC_INDEX_DRIVER);
339 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
340 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
345 if (data.preferred_tsf != NUM_TSF_IDS)
346 mvmvif->tsf_id = data.preferred_tsf;
348 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
350 if (mvmvif->tsf_id == NUM_TSF_IDS) {
351 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
358 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
359 mvmvif->time_event_data.id = TE_MAX;
361 /* No need to allocate data queues to P2P Device MAC.*/
362 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
363 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
364 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
369 used_hw_queues = data.used_hw_queues;
371 /* Find available queues, and allocate them to the ACs */
372 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
373 u8 queue = find_first_zero_bit(&used_hw_queues,
374 mvm->first_agg_queue);
376 if (queue >= mvm->first_agg_queue) {
377 IWL_ERR(mvm, "Failed to allocate queue\n");
382 __set_bit(queue, &used_hw_queues);
383 vif->hw_queue[ac] = queue;
386 /* Allocate the CAB queue for softAP and GO interfaces */
387 if (vif->type == NL80211_IFTYPE_AP) {
388 u8 queue = find_first_zero_bit(&used_hw_queues,
389 mvm->first_agg_queue);
391 if (queue >= mvm->first_agg_queue) {
392 IWL_ERR(mvm, "Failed to allocate cab queue\n");
397 vif->cab_queue = queue;
399 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
402 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
403 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
405 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
406 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
411 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
412 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
413 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
417 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
422 lockdep_assert_held(&mvm->mutex);
424 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
429 case NL80211_IFTYPE_P2P_DEVICE:
430 iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
433 case NL80211_IFTYPE_AP:
434 iwl_mvm_enable_ac_txq(mvm, vif->cab_queue,
435 IWL_MVM_TX_FIFO_MCAST);
438 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
439 iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
440 iwl_mvm_ac_to_tx_fifo[ac]);
447 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
451 lockdep_assert_held(&mvm->mutex);
454 case NL80211_IFTYPE_P2P_DEVICE:
455 iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE);
457 case NL80211_IFTYPE_AP:
458 iwl_mvm_disable_txq(mvm, vif->cab_queue);
461 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
462 iwl_mvm_disable_txq(mvm, vif->hw_queue[ac]);
466 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
467 struct ieee80211_vif *vif,
468 enum ieee80211_band band,
469 u8 *cck_rates, u8 *ofdm_rates)
471 struct ieee80211_supported_band *sband;
472 unsigned long basic = vif->bss_conf.basic_rates;
473 int lowest_present_ofdm = 100;
474 int lowest_present_cck = 100;
479 sband = mvm->hw->wiphy->bands[band];
481 for_each_set_bit(i, &basic, BITS_PER_LONG) {
482 int hw = sband->bitrates[i].hw_value;
483 if (hw >= IWL_FIRST_OFDM_RATE) {
484 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
485 if (lowest_present_ofdm > hw)
486 lowest_present_ofdm = hw;
488 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
491 if (lowest_present_cck > hw)
492 lowest_present_cck = hw;
497 * Now we've got the basic rates as bitmaps in the ofdm and cck
498 * variables. This isn't sufficient though, as there might not
499 * be all the right rates in the bitmap. E.g. if the only basic
500 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
501 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
503 * [...] a STA responding to a received frame shall transmit
504 * its Control Response frame [...] at the highest rate in the
505 * BSSBasicRateSet parameter that is less than or equal to the
506 * rate of the immediately previous frame in the frame exchange
507 * sequence ([...]) and that is of the same modulation class
508 * ([...]) as the received frame. If no rate contained in the
509 * BSSBasicRateSet parameter meets these conditions, then the
510 * control frame sent in response to a received frame shall be
511 * transmitted at the highest mandatory rate of the PHY that is
512 * less than or equal to the rate of the received frame, and
513 * that is of the same modulation class as the received frame.
515 * As a consequence, we need to add all mandatory rates that are
516 * lower than all of the basic rates to these bitmaps.
519 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
520 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
521 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
522 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
523 /* 6M already there or needed so always add */
524 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
527 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
529 * - if no CCK rates are basic, it must be ERP since there must
530 * be some basic rates at all, so they're OFDM => ERP PHY
531 * (or we're in 5 GHz, and the cck bitmap will never be used)
532 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
533 * - if 5.5M is basic, 1M and 2M are mandatory
534 * - if 2M is basic, 1M is mandatory
535 * - if 1M is basic, that's the only valid ACK rate.
536 * As a consequence, it's not as complicated as it sounds, just add
537 * any lower rates to the ACK rate bitmap.
539 if (IWL_RATE_11M_INDEX < lowest_present_cck)
540 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
541 if (IWL_RATE_5M_INDEX < lowest_present_cck)
542 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
543 if (IWL_RATE_2M_INDEX < lowest_present_cck)
544 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
545 /* 1M already there or needed so always add */
546 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
552 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
553 struct ieee80211_vif *vif,
554 struct iwl_mac_ctx_cmd *cmd)
556 /* for both sta and ap, ht_operation_mode hold the protection_mode */
557 u8 protection_mode = vif->bss_conf.ht_operation_mode &
558 IEEE80211_HT_OP_MODE_PROTECTION;
559 /* The fw does not distinguish between ht and fat */
560 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
562 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
564 * See section 9.23.3.1 of IEEE 80211-2012.
565 * Nongreenfield HT STAs Present is not supported.
567 switch (protection_mode) {
568 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
570 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
571 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
572 cmd->protection_flags |= cpu_to_le32(ht_flag);
574 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
575 /* Protect when channel wider than 20MHz */
576 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
577 cmd->protection_flags |= cpu_to_le32(ht_flag);
580 IWL_ERR(mvm, "Illegal protection mode %d\n",
586 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
587 struct ieee80211_vif *vif,
588 struct iwl_mac_ctx_cmd *cmd,
589 const u8 *bssid_override,
592 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
593 struct ieee80211_chanctx_conf *chanctx;
594 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
595 IEEE80211_HT_OP_MODE_PROTECTION);
596 u8 cck_ack_rates, ofdm_ack_rates;
597 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
600 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
602 cmd->action = cpu_to_le32(action);
605 case NL80211_IFTYPE_STATION:
607 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
609 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
611 case NL80211_IFTYPE_AP:
612 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
614 case NL80211_IFTYPE_MONITOR:
615 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
617 case NL80211_IFTYPE_P2P_DEVICE:
618 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
620 case NL80211_IFTYPE_ADHOC:
621 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
627 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
629 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
632 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
634 eth_broadcast_addr(cmd->bssid_addr);
637 chanctx = rcu_dereference(vif->chanctx_conf);
638 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
639 : IEEE80211_BAND_2GHZ,
640 &cck_ack_rates, &ofdm_ack_rates);
643 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
644 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
646 cmd->cck_short_preamble =
647 cpu_to_le32(vif->bss_conf.use_short_preamble ?
648 MAC_FLG_SHORT_PREAMBLE : 0);
650 cpu_to_le32(vif->bss_conf.use_short_slot ?
651 MAC_FLG_SHORT_SLOT : 0);
653 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
654 u8 txf = iwl_mvm_ac_to_tx_fifo[i];
656 cmd->ac[txf].cw_min =
657 cpu_to_le16(mvmvif->queue_params[i].cw_min);
658 cmd->ac[txf].cw_max =
659 cpu_to_le16(mvmvif->queue_params[i].cw_max);
660 cmd->ac[txf].edca_txop =
661 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
662 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
663 cmd->ac[txf].fifos_mask = BIT(txf);
666 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
667 if (vif->type == NL80211_IFTYPE_AP)
668 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
669 BIT(IWL_MVM_TX_FIFO_MCAST);
671 if (vif->bss_conf.qos)
672 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
674 if (vif->bss_conf.use_cts_prot)
675 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
677 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
678 vif->bss_conf.use_cts_prot,
679 vif->bss_conf.ht_operation_mode);
680 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
681 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
683 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
685 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
688 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
689 struct iwl_mac_ctx_cmd *cmd)
691 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
694 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
695 le32_to_cpu(cmd->action), ret);
699 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
700 struct ieee80211_vif *vif,
701 u32 action, bool force_assoc_off,
702 const u8 *bssid_override)
704 struct iwl_mac_ctx_cmd cmd = {};
705 struct iwl_mac_data_sta *ctxt_sta;
707 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
709 /* Fill the common data for all mac context types */
710 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
713 struct ieee80211_p2p_noa_attr *noa =
714 &vif->bss_conf.p2p_noa_attr;
716 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
717 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
718 ctxt_sta = &cmd.p2p_sta.sta;
723 /* We need the dtim_period to set the MAC as associated */
724 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
729 * The DTIM count counts down, so when it is N that means N
730 * more beacon intervals happen until the DTIM TBTT. Therefore
731 * add this to the current time. If that ends up being in the
732 * future, the firmware will handle it.
734 * Also note that the system_timestamp (which we get here as
735 * "sync_device_ts") and TSF timestamp aren't at exactly the
736 * same offset in the frame -- the TSF is at the first symbol
737 * of the TSF, the system timestamp is at signal acquisition
738 * time. This means there's an offset between them of at most
739 * a few hundred microseconds (24 * 8 bits + PLCP time gives
740 * 384us in the longest case), this is currently not relevant
741 * as the firmware wakes up around 2ms before the TBTT.
743 dtim_offs = vif->bss_conf.sync_dtim_count *
744 vif->bss_conf.beacon_int;
745 /* convert TU to usecs */
749 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
750 ctxt_sta->dtim_time =
751 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
753 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
754 le64_to_cpu(ctxt_sta->dtim_tsf),
755 le32_to_cpu(ctxt_sta->dtim_time),
758 ctxt_sta->is_assoc = cpu_to_le32(1);
760 ctxt_sta->is_assoc = cpu_to_le32(0);
762 /* Allow beacons to pass through as long as we are not
763 * associated, or we do not have dtim period information.
765 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
768 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
769 ctxt_sta->bi_reciprocal =
770 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
771 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
772 vif->bss_conf.dtim_period);
773 ctxt_sta->dtim_reciprocal =
774 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
775 vif->bss_conf.dtim_period));
777 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
778 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
780 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
783 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
784 struct ieee80211_vif *vif,
787 struct iwl_mac_ctx_cmd cmd = {};
789 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
791 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
793 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
794 MAC_FILTER_IN_CONTROL_AND_MGMT |
795 MAC_FILTER_IN_BEACON |
796 MAC_FILTER_IN_PROBE_REQUEST |
797 MAC_FILTER_IN_CRC32);
798 mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
800 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
803 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
804 struct ieee80211_vif *vif,
807 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
808 struct iwl_mac_ctx_cmd cmd = {};
810 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
812 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
814 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
815 MAC_FILTER_IN_PROBE_REQUEST);
817 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
818 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
819 cmd.ibss.bi_reciprocal =
820 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
822 /* TODO: Assumes that the beacon id == mac context id */
823 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
825 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
828 struct iwl_mvm_go_iterator_data {
832 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
834 struct iwl_mvm_go_iterator_data *data = _data;
835 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
837 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
838 mvmvif->ap_ibss_active)
839 data->go_active = true;
842 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
843 struct ieee80211_vif *vif,
846 struct iwl_mac_ctx_cmd cmd = {};
847 struct iwl_mvm_go_iterator_data data = {};
849 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
851 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
853 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
855 /* Override the filter flags to accept only probe requests */
856 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
859 * This flag should be set to true when the P2P Device is
860 * discoverable and there is at least another active P2P GO. Settings
861 * this flag will allow the P2P Device to be discoverable on other
862 * channels in addition to its listen channel.
863 * Note that this flag should not be set in other cases as it opens the
864 * Rx filters on all MAC and increases the number of interrupts.
866 ieee80211_iterate_active_interfaces_atomic(
867 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
868 iwl_mvm_go_iterator, &data);
870 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
871 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
874 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
875 struct iwl_mac_beacon_cmd *beacon_cmd,
876 u8 *beacon, u32 frame_size)
879 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
881 /* The index is relative to frame start but we start looking at the
882 * variable-length part of the beacon. */
883 tim_idx = mgmt->u.beacon.variable - beacon;
885 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
886 while ((tim_idx < (frame_size - 2)) &&
887 (beacon[tim_idx] != WLAN_EID_TIM))
888 tim_idx += beacon[tim_idx+1] + 2;
890 /* If TIM field was found, set variables */
891 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
892 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
893 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
895 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
899 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
900 struct ieee80211_vif *vif,
901 struct sk_buff *beacon)
903 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
904 struct iwl_host_cmd cmd = {
905 .id = BEACON_TEMPLATE_CMD,
908 struct iwl_mac_beacon_cmd beacon_cmd = {};
909 struct ieee80211_tx_info *info;
913 if (WARN_ON(!beacon))
916 beacon_skb_len = beacon->len;
918 /* TODO: for now the beacon template id is set to be the mac context id.
919 * Might be better to handle it as another resource ... */
920 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
921 info = IEEE80211_SKB_CB(beacon);
923 /* Set up TX command fields */
924 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
925 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
926 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
927 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
929 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
930 TX_CMD_FLG_BT_PRIO_POS;
931 beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
933 mvm->mgmt_last_antenna_idx =
934 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
935 mvm->mgmt_last_antenna_idx);
937 beacon_cmd.tx.rate_n_flags =
938 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
941 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
942 rate = IWL_FIRST_OFDM_RATE;
944 rate = IWL_FIRST_CCK_RATE;
945 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
947 beacon_cmd.tx.rate_n_flags |=
948 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
950 /* Set up TX beacon command fields */
951 if (vif->type == NL80211_IFTYPE_AP)
952 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
957 cmd.len[0] = sizeof(beacon_cmd);
958 cmd.data[0] = &beacon_cmd;
959 cmd.dataflags[0] = 0;
960 cmd.len[1] = beacon_skb_len;
961 cmd.data[1] = beacon->data;
962 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
964 return iwl_mvm_send_cmd(mvm, &cmd);
967 /* The beacon template for the AP/GO/IBSS has changed and needs update */
968 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
969 struct ieee80211_vif *vif)
971 struct sk_buff *beacon;
974 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
975 vif->type != NL80211_IFTYPE_ADHOC);
977 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
981 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
982 dev_kfree_skb(beacon);
986 struct iwl_mvm_mac_ap_iterator_data {
988 struct ieee80211_vif *vif;
989 u32 beacon_device_ts;
993 /* Find the beacon_device_ts and beacon_int for a managed interface */
994 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
995 struct ieee80211_vif *vif)
997 struct iwl_mvm_mac_ap_iterator_data *data = _data;
999 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1002 /* Station client has higher priority over P2P client*/
1003 if (vif->p2p && data->beacon_device_ts)
1006 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1007 data->beacon_int = vif->bss_conf.beacon_int;
1011 * Fill the specific data for mac context of type AP of P2P GO
1013 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1014 struct ieee80211_vif *vif,
1015 struct iwl_mac_data_ap *ctxt_ap,
1018 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1019 struct iwl_mvm_mac_ap_iterator_data data = {
1022 .beacon_device_ts = 0
1025 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1026 ctxt_ap->bi_reciprocal =
1027 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1028 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1029 vif->bss_conf.dtim_period);
1030 ctxt_ap->dtim_reciprocal =
1031 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1032 vif->bss_conf.dtim_period));
1034 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
1037 * Only set the beacon time when the MAC is being added, when we
1038 * just modify the MAC then we should keep the time -- the firmware
1039 * can otherwise have a "jumping" TBTT.
1043 * If there is a station/P2P client interface which is
1044 * associated, set the AP's TBTT far enough from the station's
1045 * TBTT. Otherwise, set it to the current system time
1047 ieee80211_iterate_active_interfaces_atomic(
1048 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1049 iwl_mvm_mac_ap_iterator, &data);
1051 if (data.beacon_device_ts) {
1052 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1053 mvmvif->ap_beacon_time = data.beacon_device_ts +
1054 ieee80211_tu_to_usec(data.beacon_int * rand /
1057 mvmvif->ap_beacon_time =
1058 iwl_read_prph(mvm->trans,
1059 DEVICE_SYSTEM_TIME_REG);
1063 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1064 ctxt_ap->beacon_tsf = 0; /* unused */
1066 /* TODO: Assume that the beacon id == mac context id */
1067 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1070 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1071 struct ieee80211_vif *vif,
1074 struct iwl_mac_ctx_cmd cmd = {};
1076 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1078 /* Fill the common data for all mac context types */
1079 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1082 * pass probe requests and beacons from other APs (needed
1083 * for ht protection)
1085 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1086 MAC_FILTER_IN_BEACON);
1088 /* Fill the data specific for ap mode */
1089 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
1090 action == FW_CTXT_ACTION_ADD);
1092 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1095 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1096 struct ieee80211_vif *vif,
1099 struct iwl_mac_ctx_cmd cmd = {};
1100 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1102 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1104 /* Fill the common data for all mac context types */
1105 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1108 * pass probe requests and beacons from other APs (needed
1109 * for ht protection)
1111 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1112 MAC_FILTER_IN_BEACON);
1114 /* Fill the data specific for GO mode */
1115 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
1116 action == FW_CTXT_ACTION_ADD);
1118 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1119 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1120 cmd.go.opp_ps_enabled =
1121 cpu_to_le32(!!(noa->oppps_ctwindow &
1122 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1124 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1127 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1128 u32 action, bool force_assoc_off,
1129 const u8 *bssid_override)
1131 switch (vif->type) {
1132 case NL80211_IFTYPE_STATION:
1133 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1137 case NL80211_IFTYPE_AP:
1139 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1141 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1143 case NL80211_IFTYPE_MONITOR:
1144 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1145 case NL80211_IFTYPE_P2P_DEVICE:
1146 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1147 case NL80211_IFTYPE_ADHOC:
1148 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1156 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1158 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1161 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1162 vif->addr, ieee80211_vif_type_p2p(vif)))
1165 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1170 /* will only do anything at resume from D3 time */
1171 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1173 mvmvif->uploaded = true;
1177 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1178 bool force_assoc_off, const u8 *bssid_override)
1180 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1182 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1183 vif->addr, ieee80211_vif_type_p2p(vif)))
1186 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1187 force_assoc_off, bssid_override);
1190 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1192 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1193 struct iwl_mac_ctx_cmd cmd;
1196 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1197 vif->addr, ieee80211_vif_type_p2p(vif)))
1200 memset(&cmd, 0, sizeof(cmd));
1202 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1204 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1206 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1209 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1213 mvmvif->uploaded = false;
1215 if (vif->type == NL80211_IFTYPE_MONITOR)
1216 mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1221 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1222 struct ieee80211_vif *csa_vif, u32 gp2)
1224 struct iwl_mvm_vif *mvmvif =
1225 iwl_mvm_vif_from_mac80211(csa_vif);
1227 if (!ieee80211_csa_is_complete(csa_vif)) {
1228 int c = ieee80211_csa_update_counter(csa_vif);
1230 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1232 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2) {
1233 u32 rel_time = (c + 1) *
1234 csa_vif->bss_conf.beacon_int -
1235 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1236 u32 apply_time = gp2 + rel_time * 1024;
1238 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1239 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1240 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1243 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1244 /* we don't have CSA NoA scheduled yet, switch now */
1245 ieee80211_csa_finish(csa_vif);
1246 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1250 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1251 struct iwl_rx_cmd_buffer *rxb,
1252 struct iwl_device_cmd *cmd)
1254 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1255 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1256 struct ieee80211_vif *csa_vif;
1257 struct ieee80211_vif *tx_blocked_vif;
1260 lockdep_assert_held(&mvm->mutex);
1262 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON) {
1263 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1265 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1266 tsf = le64_to_cpu(beacon->tsf);
1267 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1269 struct iwl_beacon_notif *beacon = (void *)pkt->data;
1271 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1272 tsf = le64_to_cpu(beacon->tsf);
1276 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1277 le16_to_cpu(beacon_notify_hdr->status.status) &
1279 beacon_notify_hdr->failure_frame, tsf,
1280 mvm->ap_last_beacon_gp2,
1281 le32_to_cpu(beacon_notify_hdr->initial_rate));
1283 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1284 lockdep_is_held(&mvm->mutex));
1285 if (unlikely(csa_vif && csa_vif->csa_active))
1286 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2);
1288 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1289 lockdep_is_held(&mvm->mutex));
1290 if (unlikely(tx_blocked_vif)) {
1291 struct iwl_mvm_vif *mvmvif =
1292 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1295 * The channel switch is started and we have blocked the
1296 * stations. If this is the first beacon (the timeout wasn't
1297 * set), set the unblock timeout, otherwise countdown
1299 if (!mvm->csa_tx_block_bcn_timeout)
1300 mvm->csa_tx_block_bcn_timeout =
1301 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1303 mvm->csa_tx_block_bcn_timeout--;
1305 /* Check if the timeout is expired, and unblock tx */
1306 if (mvm->csa_tx_block_bcn_timeout == 0) {
1307 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1308 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1315 static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1316 struct ieee80211_vif *vif)
1318 struct iwl_missed_beacons_notif *missed_beacons = _data;
1319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1321 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1325 * TODO: the threshold should be adjusted based on latency conditions,
1326 * and/or in case of a CS flow on one of the other AP vifs.
1328 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1329 IWL_MVM_MISSED_BEACONS_THRESHOLD)
1330 ieee80211_beacon_loss(vif);
1333 int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1334 struct iwl_rx_cmd_buffer *rxb,
1335 struct iwl_device_cmd *cmd)
1337 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1338 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1341 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1342 le32_to_cpu(mb->mac_id),
1343 le32_to_cpu(mb->consec_missed_beacons),
1344 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1345 le32_to_cpu(mb->num_recvd_beacons),
1346 le32_to_cpu(mb->num_expected_beacons));
1348 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1349 IEEE80211_IFACE_ITER_NORMAL,
1350 iwl_mvm_beacon_loss_iterator,