1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
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)];
86 enum iwl_tsf_id preferred_tsf;
90 struct iwl_mvm_hw_queues_iface_iterator_data {
91 struct ieee80211_vif *exclude_vif;
92 unsigned long used_hw_queues;
95 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
96 struct ieee80211_vif *vif)
98 struct iwl_mvm_mac_iface_iterator_data *data = _data;
99 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
102 /* Skip the interface for which we are trying to assign a tsf_id */
103 if (vif == data->vif)
107 * The TSF is a hardware/firmware resource, there are 4 and
108 * the driver should assign and free them as needed. However,
109 * there are cases where 2 MACs should share the same TSF ID
110 * for the purpose of clock sync, an optimization to avoid
111 * clock drift causing overlapping TBTTs/DTIMs for a GO and
112 * client in the system.
114 * The firmware will decide according to the MAC type which
115 * will be the master and slave. Clients that need to sync
116 * with a remote station will be the master, and an AP or GO
119 * Depending on the new interface type it can be slaved to
120 * or become the master of an existing interface.
122 switch (data->vif->type) {
123 case NL80211_IFTYPE_STATION:
125 * The new interface is a client, so if the one we're iterating
126 * is an AP, and the beacon interval of the AP is a multiple or
127 * divisor of the beacon interval of the client, the same TSF
128 * should be used to avoid drift between the new client and
129 * existing AP. The existing AP will get drift updates from the
130 * new client context in this case.
132 if (vif->type != NL80211_IFTYPE_AP ||
133 data->preferred_tsf != NUM_TSF_IDS ||
134 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
137 min_bi = min(data->vif->bss_conf.beacon_int,
138 vif->bss_conf.beacon_int);
143 if ((data->vif->bss_conf.beacon_int -
144 vif->bss_conf.beacon_int) % min_bi == 0) {
145 data->preferred_tsf = mvmvif->tsf_id;
150 case NL80211_IFTYPE_AP:
152 * The new interface is AP/GO, so if its beacon interval is a
153 * multiple or a divisor of the beacon interval of an existing
154 * interface, it should get drift updates from an existing
155 * client or use the same TSF as an existing GO. There's no
156 * drift between TSFs internally but if they used different
157 * TSFs then a new client MAC could update one of them and
158 * cause drift that way.
160 if ((vif->type != NL80211_IFTYPE_AP &&
161 vif->type != NL80211_IFTYPE_STATION) ||
162 data->preferred_tsf != NUM_TSF_IDS ||
163 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
166 min_bi = min(data->vif->bss_conf.beacon_int,
167 vif->bss_conf.beacon_int);
172 if ((data->vif->bss_conf.beacon_int -
173 vif->bss_conf.beacon_int) % min_bi == 0) {
174 data->preferred_tsf = mvmvif->tsf_id;
180 * For all other interface types there's no need to
181 * take drift into account. Either they're exclusive
182 * like IBSS and monitor, or we don't care much about
183 * their TSF (like P2P Device), but we won't be able
184 * to share the TSF resource.
190 * Unless we exited above, we can't share the TSF resource
191 * that the virtual interface we're iterating over is using
192 * with the new one, so clear the available bit and if this
193 * was the preferred one, reset that as well.
195 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
197 if (data->preferred_tsf == mvmvif->tsf_id)
198 data->preferred_tsf = NUM_TSF_IDS;
202 * Get the mask of the queues used by the vif
204 u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif)
208 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
209 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
211 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
212 qmask |= BIT(vif->hw_queue[ac]);
214 if (vif->type == NL80211_IFTYPE_AP)
215 qmask |= BIT(vif->cab_queue);
220 static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac,
221 struct ieee80211_vif *vif)
223 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
225 /* exclude the given vif */
226 if (vif == data->exclude_vif)
229 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif);
232 static void iwl_mvm_mac_sta_hw_queues_iter(void *_data,
233 struct ieee80211_sta *sta)
235 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
236 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
238 /* Mark the queues used by the sta */
239 data->used_hw_queues |= mvmsta->tfd_queue_msk;
242 unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm,
243 struct ieee80211_vif *exclude_vif)
245 struct iwl_mvm_hw_queues_iface_iterator_data data = {
246 .exclude_vif = exclude_vif,
248 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
249 BIT(mvm->aux_queue) |
250 BIT(IWL_MVM_CMD_QUEUE),
253 lockdep_assert_held(&mvm->mutex);
255 /* mark all VIF used hw queues */
256 ieee80211_iterate_active_interfaces_atomic(
257 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
258 iwl_mvm_iface_hw_queues_iter, &data);
260 /* don't assign the same hw queues as TDLS stations */
261 ieee80211_iterate_stations_atomic(mvm->hw,
262 iwl_mvm_mac_sta_hw_queues_iter,
265 return data.used_hw_queues;
268 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
269 struct ieee80211_vif *vif)
271 struct iwl_mvm_mac_iface_iterator_data *data = _data;
272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
274 /* Iterator may already find the interface being added -- skip it */
275 if (vif == data->vif) {
276 data->found_vif = true;
280 /* Mark MAC IDs as used by clearing the available bit, and
281 * (below) mark TSFs as used if their existing use is not
282 * compatible with the new interface type.
283 * No locking or atomic bit operations are needed since the
284 * data is on the stack of the caller function.
286 __clear_bit(mvmvif->id, data->available_mac_ids);
288 /* find a suitable tsf_id */
289 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
292 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
293 struct ieee80211_vif *vif)
295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
296 struct iwl_mvm_mac_iface_iterator_data data = {
299 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
300 /* no preference yet */
301 .preferred_tsf = NUM_TSF_IDS,
304 ieee80211_iterate_active_interfaces_atomic(
305 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
306 iwl_mvm_mac_tsf_id_iter, &data);
308 if (data.preferred_tsf != NUM_TSF_IDS)
309 mvmvif->tsf_id = data.preferred_tsf;
310 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
311 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
315 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
316 struct ieee80211_vif *vif)
318 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
319 struct iwl_mvm_mac_iface_iterator_data data = {
322 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
323 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
324 /* no preference yet */
325 .preferred_tsf = NUM_TSF_IDS,
330 unsigned long used_hw_queues;
333 * Allocate a MAC ID and a TSF for this MAC, along with the queues
334 * and other resources.
338 * Before the iterator, we start with all MAC IDs and TSFs available.
340 * During iteration, all MAC IDs are cleared that are in use by other
341 * virtual interfaces, and all TSF IDs are cleared that can't be used
342 * by this new virtual interface because they're used by an interface
343 * that can't share it with the new one.
344 * At the same time, we check if there's a preferred TSF in the case
345 * that we should share it with another interface.
348 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
350 case NL80211_IFTYPE_ADHOC:
352 case NL80211_IFTYPE_STATION:
357 __clear_bit(0, data.available_mac_ids);
360 ieee80211_iterate_active_interfaces_atomic(
361 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
362 iwl_mvm_mac_iface_iterator, &data);
364 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif);
367 * In the case we're getting here during resume, it's similar to
368 * firmware restart, and with RESUME_ALL the iterator will find
369 * the vif being added already.
370 * We don't want to reassign any IDs in either case since doing
371 * so would probably assign different IDs (as interfaces aren't
372 * necessarily added in the same order), but the old IDs were
373 * preserved anyway, so skip ID assignment for both resume and
379 /* Therefore, in recovery, we can't get here */
380 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
383 mvmvif->id = find_first_bit(data.available_mac_ids,
384 NUM_MAC_INDEX_DRIVER);
385 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
386 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
391 if (data.preferred_tsf != NUM_TSF_IDS)
392 mvmvif->tsf_id = data.preferred_tsf;
394 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
396 if (mvmvif->tsf_id == NUM_TSF_IDS) {
397 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
404 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
405 mvmvif->time_event_data.id = TE_MAX;
407 /* No need to allocate data queues to P2P Device MAC.*/
408 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
409 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
410 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
415 /* Find available queues, and allocate them to the ACs */
416 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
417 u8 queue = find_first_zero_bit(&used_hw_queues,
418 mvm->first_agg_queue);
420 if (queue >= mvm->first_agg_queue) {
421 IWL_ERR(mvm, "Failed to allocate queue\n");
426 __set_bit(queue, &used_hw_queues);
427 vif->hw_queue[ac] = queue;
430 /* Allocate the CAB queue for softAP and GO interfaces */
431 if (vif->type == NL80211_IFTYPE_AP) {
432 u8 queue = find_first_zero_bit(&used_hw_queues,
433 mvm->first_agg_queue);
435 if (queue >= mvm->first_agg_queue) {
436 IWL_ERR(mvm, "Failed to allocate cab queue\n");
441 vif->cab_queue = queue;
443 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
446 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
447 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
449 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
450 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
455 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
456 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
457 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
461 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
466 lockdep_assert_held(&mvm->mutex);
468 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
473 case NL80211_IFTYPE_P2P_DEVICE:
474 iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
477 case NL80211_IFTYPE_AP:
478 iwl_mvm_enable_ac_txq(mvm, vif->cab_queue,
479 IWL_MVM_TX_FIFO_MCAST);
482 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
483 iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
484 iwl_mvm_ac_to_tx_fifo[ac]);
491 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
495 lockdep_assert_held(&mvm->mutex);
498 case NL80211_IFTYPE_P2P_DEVICE:
499 iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE);
501 case NL80211_IFTYPE_AP:
502 iwl_mvm_disable_txq(mvm, vif->cab_queue);
505 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
506 iwl_mvm_disable_txq(mvm, vif->hw_queue[ac]);
510 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
511 struct ieee80211_vif *vif,
512 enum ieee80211_band band,
513 u8 *cck_rates, u8 *ofdm_rates)
515 struct ieee80211_supported_band *sband;
516 unsigned long basic = vif->bss_conf.basic_rates;
517 int lowest_present_ofdm = 100;
518 int lowest_present_cck = 100;
523 sband = mvm->hw->wiphy->bands[band];
525 for_each_set_bit(i, &basic, BITS_PER_LONG) {
526 int hw = sband->bitrates[i].hw_value;
527 if (hw >= IWL_FIRST_OFDM_RATE) {
528 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
529 if (lowest_present_ofdm > hw)
530 lowest_present_ofdm = hw;
532 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
535 if (lowest_present_cck > hw)
536 lowest_present_cck = hw;
541 * Now we've got the basic rates as bitmaps in the ofdm and cck
542 * variables. This isn't sufficient though, as there might not
543 * be all the right rates in the bitmap. E.g. if the only basic
544 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
545 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
547 * [...] a STA responding to a received frame shall transmit
548 * its Control Response frame [...] at the highest rate in the
549 * BSSBasicRateSet parameter that is less than or equal to the
550 * rate of the immediately previous frame in the frame exchange
551 * sequence ([...]) and that is of the same modulation class
552 * ([...]) as the received frame. If no rate contained in the
553 * BSSBasicRateSet parameter meets these conditions, then the
554 * control frame sent in response to a received frame shall be
555 * transmitted at the highest mandatory rate of the PHY that is
556 * less than or equal to the rate of the received frame, and
557 * that is of the same modulation class as the received frame.
559 * As a consequence, we need to add all mandatory rates that are
560 * lower than all of the basic rates to these bitmaps.
563 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
564 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
565 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
566 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
567 /* 6M already there or needed so always add */
568 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
571 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
573 * - if no CCK rates are basic, it must be ERP since there must
574 * be some basic rates at all, so they're OFDM => ERP PHY
575 * (or we're in 5 GHz, and the cck bitmap will never be used)
576 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
577 * - if 5.5M is basic, 1M and 2M are mandatory
578 * - if 2M is basic, 1M is mandatory
579 * - if 1M is basic, that's the only valid ACK rate.
580 * As a consequence, it's not as complicated as it sounds, just add
581 * any lower rates to the ACK rate bitmap.
583 if (IWL_RATE_11M_INDEX < lowest_present_cck)
584 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
585 if (IWL_RATE_5M_INDEX < lowest_present_cck)
586 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
587 if (IWL_RATE_2M_INDEX < lowest_present_cck)
588 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
589 /* 1M already there or needed so always add */
590 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
596 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
597 struct ieee80211_vif *vif,
598 struct iwl_mac_ctx_cmd *cmd)
600 /* for both sta and ap, ht_operation_mode hold the protection_mode */
601 u8 protection_mode = vif->bss_conf.ht_operation_mode &
602 IEEE80211_HT_OP_MODE_PROTECTION;
603 /* The fw does not distinguish between ht and fat */
604 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
606 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
608 * See section 9.23.3.1 of IEEE 80211-2012.
609 * Nongreenfield HT STAs Present is not supported.
611 switch (protection_mode) {
612 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
614 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
615 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
616 cmd->protection_flags |= cpu_to_le32(ht_flag);
618 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
619 /* Protect when channel wider than 20MHz */
620 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
621 cmd->protection_flags |= cpu_to_le32(ht_flag);
624 IWL_ERR(mvm, "Illegal protection mode %d\n",
630 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
631 struct ieee80211_vif *vif,
632 struct iwl_mac_ctx_cmd *cmd,
633 const u8 *bssid_override,
636 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
637 struct ieee80211_chanctx_conf *chanctx;
638 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
639 IEEE80211_HT_OP_MODE_PROTECTION);
640 u8 cck_ack_rates, ofdm_ack_rates;
641 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
644 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
646 cmd->action = cpu_to_le32(action);
649 case NL80211_IFTYPE_STATION:
651 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
653 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
655 case NL80211_IFTYPE_AP:
656 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
658 case NL80211_IFTYPE_MONITOR:
659 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
661 case NL80211_IFTYPE_P2P_DEVICE:
662 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
664 case NL80211_IFTYPE_ADHOC:
665 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
671 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
673 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
676 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
678 eth_broadcast_addr(cmd->bssid_addr);
681 chanctx = rcu_dereference(vif->chanctx_conf);
682 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
683 : IEEE80211_BAND_2GHZ,
684 &cck_ack_rates, &ofdm_ack_rates);
687 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
688 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
690 cmd->cck_short_preamble =
691 cpu_to_le32(vif->bss_conf.use_short_preamble ?
692 MAC_FLG_SHORT_PREAMBLE : 0);
694 cpu_to_le32(vif->bss_conf.use_short_slot ?
695 MAC_FLG_SHORT_SLOT : 0);
697 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
698 u8 txf = iwl_mvm_ac_to_tx_fifo[i];
700 cmd->ac[txf].cw_min =
701 cpu_to_le16(mvmvif->queue_params[i].cw_min);
702 cmd->ac[txf].cw_max =
703 cpu_to_le16(mvmvif->queue_params[i].cw_max);
704 cmd->ac[txf].edca_txop =
705 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
706 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
707 cmd->ac[txf].fifos_mask = BIT(txf);
710 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
711 if (vif->type == NL80211_IFTYPE_AP)
712 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
713 BIT(IWL_MVM_TX_FIFO_MCAST);
715 if (vif->bss_conf.qos)
716 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
718 if (vif->bss_conf.use_cts_prot)
719 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
721 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
722 vif->bss_conf.use_cts_prot,
723 vif->bss_conf.ht_operation_mode);
724 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
725 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
727 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
729 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
732 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
733 struct iwl_mac_ctx_cmd *cmd)
735 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
738 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
739 le32_to_cpu(cmd->action), ret);
743 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
744 struct ieee80211_vif *vif,
745 u32 action, bool force_assoc_off,
746 const u8 *bssid_override)
748 struct iwl_mac_ctx_cmd cmd = {};
749 struct iwl_mac_data_sta *ctxt_sta;
751 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
753 /* Fill the common data for all mac context types */
754 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
757 struct ieee80211_p2p_noa_attr *noa =
758 &vif->bss_conf.p2p_noa_attr;
760 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
761 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
762 ctxt_sta = &cmd.p2p_sta.sta;
767 /* We need the dtim_period to set the MAC as associated */
768 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
773 * The DTIM count counts down, so when it is N that means N
774 * more beacon intervals happen until the DTIM TBTT. Therefore
775 * add this to the current time. If that ends up being in the
776 * future, the firmware will handle it.
778 * Also note that the system_timestamp (which we get here as
779 * "sync_device_ts") and TSF timestamp aren't at exactly the
780 * same offset in the frame -- the TSF is at the first symbol
781 * of the TSF, the system timestamp is at signal acquisition
782 * time. This means there's an offset between them of at most
783 * a few hundred microseconds (24 * 8 bits + PLCP time gives
784 * 384us in the longest case), this is currently not relevant
785 * as the firmware wakes up around 2ms before the TBTT.
787 dtim_offs = vif->bss_conf.sync_dtim_count *
788 vif->bss_conf.beacon_int;
789 /* convert TU to usecs */
793 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
794 ctxt_sta->dtim_time =
795 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
797 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
798 le64_to_cpu(ctxt_sta->dtim_tsf),
799 le32_to_cpu(ctxt_sta->dtim_time),
802 ctxt_sta->is_assoc = cpu_to_le32(1);
804 ctxt_sta->is_assoc = cpu_to_le32(0);
806 /* Allow beacons to pass through as long as we are not
807 * associated, or we do not have dtim period information.
809 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
812 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
813 ctxt_sta->bi_reciprocal =
814 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
815 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
816 vif->bss_conf.dtim_period);
817 ctxt_sta->dtim_reciprocal =
818 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
819 vif->bss_conf.dtim_period));
821 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
822 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
824 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
827 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
828 struct ieee80211_vif *vif,
831 struct iwl_mac_ctx_cmd cmd = {};
833 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
835 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
837 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
838 MAC_FILTER_IN_CONTROL_AND_MGMT |
839 MAC_FILTER_IN_BEACON |
840 MAC_FILTER_IN_PROBE_REQUEST |
841 MAC_FILTER_IN_CRC32);
842 mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
844 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
847 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
848 struct ieee80211_vif *vif,
851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
852 struct iwl_mac_ctx_cmd cmd = {};
854 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
856 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
858 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
859 MAC_FILTER_IN_PROBE_REQUEST);
861 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
862 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
863 cmd.ibss.bi_reciprocal =
864 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
866 /* TODO: Assumes that the beacon id == mac context id */
867 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
869 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
872 struct iwl_mvm_go_iterator_data {
876 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
878 struct iwl_mvm_go_iterator_data *data = _data;
879 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
881 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
882 mvmvif->ap_ibss_active)
883 data->go_active = true;
886 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
887 struct ieee80211_vif *vif,
890 struct iwl_mac_ctx_cmd cmd = {};
891 struct iwl_mvm_go_iterator_data data = {};
893 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
895 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
897 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
899 /* Override the filter flags to accept only probe requests */
900 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
903 * This flag should be set to true when the P2P Device is
904 * discoverable and there is at least another active P2P GO. Settings
905 * this flag will allow the P2P Device to be discoverable on other
906 * channels in addition to its listen channel.
907 * Note that this flag should not be set in other cases as it opens the
908 * Rx filters on all MAC and increases the number of interrupts.
910 ieee80211_iterate_active_interfaces_atomic(
911 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
912 iwl_mvm_go_iterator, &data);
914 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
915 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
918 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
919 struct iwl_mac_beacon_cmd *beacon_cmd,
920 u8 *beacon, u32 frame_size)
923 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
925 /* The index is relative to frame start but we start looking at the
926 * variable-length part of the beacon. */
927 tim_idx = mgmt->u.beacon.variable - beacon;
929 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
930 while ((tim_idx < (frame_size - 2)) &&
931 (beacon[tim_idx] != WLAN_EID_TIM))
932 tim_idx += beacon[tim_idx+1] + 2;
934 /* If TIM field was found, set variables */
935 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
936 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
937 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
939 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
943 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
944 struct ieee80211_vif *vif,
945 struct sk_buff *beacon)
947 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
948 struct iwl_host_cmd cmd = {
949 .id = BEACON_TEMPLATE_CMD,
952 struct iwl_mac_beacon_cmd beacon_cmd = {};
953 struct ieee80211_tx_info *info;
957 if (WARN_ON(!beacon))
960 beacon_skb_len = beacon->len;
962 /* TODO: for now the beacon template id is set to be the mac context id.
963 * Might be better to handle it as another resource ... */
964 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
965 info = IEEE80211_SKB_CB(beacon);
967 /* Set up TX command fields */
968 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
969 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
970 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
971 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
973 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
974 TX_CMD_FLG_BT_PRIO_POS;
975 beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
977 mvm->mgmt_last_antenna_idx =
978 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
979 mvm->mgmt_last_antenna_idx);
981 beacon_cmd.tx.rate_n_flags =
982 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
985 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
986 rate = IWL_FIRST_OFDM_RATE;
988 rate = IWL_FIRST_CCK_RATE;
989 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
991 beacon_cmd.tx.rate_n_flags |=
992 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
994 /* Set up TX beacon command fields */
995 if (vif->type == NL80211_IFTYPE_AP)
996 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
1000 /* Submit command */
1001 cmd.len[0] = sizeof(beacon_cmd);
1002 cmd.data[0] = &beacon_cmd;
1003 cmd.dataflags[0] = 0;
1004 cmd.len[1] = beacon_skb_len;
1005 cmd.data[1] = beacon->data;
1006 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1008 return iwl_mvm_send_cmd(mvm, &cmd);
1011 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1012 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1013 struct ieee80211_vif *vif)
1015 struct sk_buff *beacon;
1018 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1019 vif->type != NL80211_IFTYPE_ADHOC);
1021 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1025 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1026 dev_kfree_skb(beacon);
1030 struct iwl_mvm_mac_ap_iterator_data {
1031 struct iwl_mvm *mvm;
1032 struct ieee80211_vif *vif;
1033 u32 beacon_device_ts;
1037 /* Find the beacon_device_ts and beacon_int for a managed interface */
1038 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1039 struct ieee80211_vif *vif)
1041 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1043 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1046 /* Station client has higher priority over P2P client*/
1047 if (vif->p2p && data->beacon_device_ts)
1050 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1051 data->beacon_int = vif->bss_conf.beacon_int;
1055 * Fill the specific data for mac context of type AP of P2P GO
1057 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1058 struct ieee80211_vif *vif,
1059 struct iwl_mac_data_ap *ctxt_ap,
1062 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1063 struct iwl_mvm_mac_ap_iterator_data data = {
1066 .beacon_device_ts = 0
1069 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1070 ctxt_ap->bi_reciprocal =
1071 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1072 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1073 vif->bss_conf.dtim_period);
1074 ctxt_ap->dtim_reciprocal =
1075 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1076 vif->bss_conf.dtim_period));
1078 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
1081 * Only set the beacon time when the MAC is being added, when we
1082 * just modify the MAC then we should keep the time -- the firmware
1083 * can otherwise have a "jumping" TBTT.
1087 * If there is a station/P2P client interface which is
1088 * associated, set the AP's TBTT far enough from the station's
1089 * TBTT. Otherwise, set it to the current system time
1091 ieee80211_iterate_active_interfaces_atomic(
1092 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1093 iwl_mvm_mac_ap_iterator, &data);
1095 if (data.beacon_device_ts) {
1096 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1097 mvmvif->ap_beacon_time = data.beacon_device_ts +
1098 ieee80211_tu_to_usec(data.beacon_int * rand /
1101 mvmvif->ap_beacon_time =
1102 iwl_read_prph(mvm->trans,
1103 DEVICE_SYSTEM_TIME_REG);
1107 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1108 ctxt_ap->beacon_tsf = 0; /* unused */
1110 /* TODO: Assume that the beacon id == mac context id */
1111 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1114 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1115 struct ieee80211_vif *vif,
1118 struct iwl_mac_ctx_cmd cmd = {};
1120 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1122 /* Fill the common data for all mac context types */
1123 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1126 * pass probe requests and beacons from other APs (needed
1127 * for ht protection)
1129 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1130 MAC_FILTER_IN_BEACON);
1132 /* Fill the data specific for ap mode */
1133 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
1134 action == FW_CTXT_ACTION_ADD);
1136 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1139 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1140 struct ieee80211_vif *vif,
1143 struct iwl_mac_ctx_cmd cmd = {};
1144 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1146 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1148 /* Fill the common data for all mac context types */
1149 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1152 * pass probe requests and beacons from other APs (needed
1153 * for ht protection)
1155 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1156 MAC_FILTER_IN_BEACON);
1158 /* Fill the data specific for GO mode */
1159 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
1160 action == FW_CTXT_ACTION_ADD);
1162 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1163 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1164 cmd.go.opp_ps_enabled =
1165 cpu_to_le32(!!(noa->oppps_ctwindow &
1166 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1168 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1171 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1172 u32 action, bool force_assoc_off,
1173 const u8 *bssid_override)
1175 switch (vif->type) {
1176 case NL80211_IFTYPE_STATION:
1177 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1181 case NL80211_IFTYPE_AP:
1183 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1185 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1187 case NL80211_IFTYPE_MONITOR:
1188 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1189 case NL80211_IFTYPE_P2P_DEVICE:
1190 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1191 case NL80211_IFTYPE_ADHOC:
1192 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1200 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1202 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1205 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1206 vif->addr, ieee80211_vif_type_p2p(vif)))
1209 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1214 /* will only do anything at resume from D3 time */
1215 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1217 mvmvif->uploaded = true;
1221 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1222 bool force_assoc_off, const u8 *bssid_override)
1224 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1226 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1227 vif->addr, ieee80211_vif_type_p2p(vif)))
1230 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1231 force_assoc_off, bssid_override);
1234 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1236 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1237 struct iwl_mac_ctx_cmd cmd;
1240 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1241 vif->addr, ieee80211_vif_type_p2p(vif)))
1244 memset(&cmd, 0, sizeof(cmd));
1246 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1248 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1250 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1253 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1257 mvmvif->uploaded = false;
1259 if (vif->type == NL80211_IFTYPE_MONITOR)
1260 mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1265 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1266 struct ieee80211_vif *csa_vif, u32 gp2,
1269 struct iwl_mvm_vif *mvmvif =
1270 iwl_mvm_vif_from_mac80211(csa_vif);
1272 /* Don't start to countdown from a failed beacon */
1273 if (!tx_success && !mvmvif->csa_countdown)
1276 mvmvif->csa_countdown = true;
1278 if (!ieee80211_csa_is_complete(csa_vif)) {
1279 int c = ieee80211_csa_update_counter(csa_vif);
1281 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1283 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1285 u32 rel_time = (c + 1) *
1286 csa_vif->bss_conf.beacon_int -
1287 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1288 u32 apply_time = gp2 + rel_time * 1024;
1290 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1291 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1292 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1295 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1296 /* we don't have CSA NoA scheduled yet, switch now */
1297 ieee80211_csa_finish(csa_vif);
1298 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1302 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1303 struct iwl_rx_cmd_buffer *rxb,
1304 struct iwl_device_cmd *cmd)
1306 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1307 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1308 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1309 struct ieee80211_vif *csa_vif;
1310 struct ieee80211_vif *tx_blocked_vif;
1313 lockdep_assert_held(&mvm->mutex);
1315 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1316 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1318 status = le16_to_cpu(beacon_notify_hdr->status.status) & TX_STATUS_MSK;
1320 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1321 status, beacon_notify_hdr->failure_frame,
1322 le64_to_cpu(beacon->tsf),
1323 mvm->ap_last_beacon_gp2,
1324 le32_to_cpu(beacon_notify_hdr->initial_rate));
1326 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1327 lockdep_is_held(&mvm->mutex));
1328 if (unlikely(csa_vif && csa_vif->csa_active))
1329 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1330 (status == TX_STATUS_SUCCESS));
1332 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1333 lockdep_is_held(&mvm->mutex));
1334 if (unlikely(tx_blocked_vif)) {
1335 struct iwl_mvm_vif *mvmvif =
1336 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1339 * The channel switch is started and we have blocked the
1340 * stations. If this is the first beacon (the timeout wasn't
1341 * set), set the unblock timeout, otherwise countdown
1343 if (!mvm->csa_tx_block_bcn_timeout)
1344 mvm->csa_tx_block_bcn_timeout =
1345 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1347 mvm->csa_tx_block_bcn_timeout--;
1349 /* Check if the timeout is expired, and unblock tx */
1350 if (mvm->csa_tx_block_bcn_timeout == 0) {
1351 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1352 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1359 static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1360 struct ieee80211_vif *vif)
1362 struct iwl_missed_beacons_notif *missed_beacons = _data;
1363 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1365 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1369 * TODO: the threshold should be adjusted based on latency conditions,
1370 * and/or in case of a CS flow on one of the other AP vifs.
1372 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1373 IWL_MVM_MISSED_BEACONS_THRESHOLD)
1374 ieee80211_beacon_loss(vif);
1377 int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1378 struct iwl_rx_cmd_buffer *rxb,
1379 struct iwl_device_cmd *cmd)
1381 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1382 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1385 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1386 le32_to_cpu(mb->mac_id),
1387 le32_to_cpu(mb->consec_missed_beacons),
1388 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1389 le32_to_cpu(mb->num_recvd_beacons),
1390 le32_to_cpu(mb->num_expected_beacons));
1392 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1393 IEEE80211_IFACE_ITER_NORMAL,
1394 iwl_mvm_beacon_loss_iterator,