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
10 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
38 * All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
68 #include <linux/etherdevice.h>
69 #include <net/mac80211.h>
74 #include "time-event.h"
77 const u8 iwl_mvm_ac_to_tx_fifo
[] = {
84 struct iwl_mvm_mac_iface_iterator_data
{
86 struct ieee80211_vif
*vif
;
87 unsigned long available_mac_ids
[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER
)];
88 unsigned long available_tsf_ids
[BITS_TO_LONGS(NUM_TSF_IDS
)];
89 enum iwl_tsf_id preferred_tsf
;
93 struct iwl_mvm_hw_queues_iface_iterator_data
{
94 struct ieee80211_vif
*exclude_vif
;
95 unsigned long used_hw_queues
;
98 static void iwl_mvm_mac_tsf_id_iter(void *_data
, u8
*mac
,
99 struct ieee80211_vif
*vif
)
101 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
102 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
105 /* Skip the interface for which we are trying to assign a tsf_id */
106 if (vif
== data
->vif
)
110 * The TSF is a hardware/firmware resource, there are 4 and
111 * the driver should assign and free them as needed. However,
112 * there are cases where 2 MACs should share the same TSF ID
113 * for the purpose of clock sync, an optimization to avoid
114 * clock drift causing overlapping TBTTs/DTIMs for a GO and
115 * client in the system.
117 * The firmware will decide according to the MAC type which
118 * will be the master and slave. Clients that need to sync
119 * with a remote station will be the master, and an AP or GO
122 * Depending on the new interface type it can be slaved to
123 * or become the master of an existing interface.
125 switch (data
->vif
->type
) {
126 case NL80211_IFTYPE_STATION
:
128 * The new interface is a client, so if the one we're iterating
129 * is an AP, and the beacon interval of the AP is a multiple or
130 * divisor of the beacon interval of the client, the same TSF
131 * should be used to avoid drift between the new client and
132 * existing AP. The existing AP will get drift updates from the
133 * new client context in this case.
135 if (vif
->type
!= NL80211_IFTYPE_AP
||
136 data
->preferred_tsf
!= NUM_TSF_IDS
||
137 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
140 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
141 vif
->bss_conf
.beacon_int
);
146 if ((data
->vif
->bss_conf
.beacon_int
-
147 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
148 data
->preferred_tsf
= mvmvif
->tsf_id
;
153 case NL80211_IFTYPE_AP
:
155 * The new interface is AP/GO, so if its beacon interval is a
156 * multiple or a divisor of the beacon interval of an existing
157 * interface, it should get drift updates from an existing
158 * client or use the same TSF as an existing GO. There's no
159 * drift between TSFs internally but if they used different
160 * TSFs then a new client MAC could update one of them and
161 * cause drift that way.
163 if ((vif
->type
!= NL80211_IFTYPE_AP
&&
164 vif
->type
!= NL80211_IFTYPE_STATION
) ||
165 data
->preferred_tsf
!= NUM_TSF_IDS
||
166 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
169 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
170 vif
->bss_conf
.beacon_int
);
175 if ((data
->vif
->bss_conf
.beacon_int
-
176 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
177 data
->preferred_tsf
= mvmvif
->tsf_id
;
183 * For all other interface types there's no need to
184 * take drift into account. Either they're exclusive
185 * like IBSS and monitor, or we don't care much about
186 * their TSF (like P2P Device), but we won't be able
187 * to share the TSF resource.
193 * Unless we exited above, we can't share the TSF resource
194 * that the virtual interface we're iterating over is using
195 * with the new one, so clear the available bit and if this
196 * was the preferred one, reset that as well.
198 __clear_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
);
200 if (data
->preferred_tsf
== mvmvif
->tsf_id
)
201 data
->preferred_tsf
= NUM_TSF_IDS
;
205 * Get the mask of the queues used by the vif
207 u32
iwl_mvm_mac_get_queues_mask(struct ieee80211_vif
*vif
)
211 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
)
212 return BIT(IWL_MVM_OFFCHANNEL_QUEUE
);
214 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
215 if (vif
->hw_queue
[ac
] != IEEE80211_INVAL_HW_QUEUE
)
216 qmask
|= BIT(vif
->hw_queue
[ac
]);
219 if (vif
->type
== NL80211_IFTYPE_AP
)
220 qmask
|= BIT(vif
->cab_queue
);
225 static void iwl_mvm_iface_hw_queues_iter(void *_data
, u8
*mac
,
226 struct ieee80211_vif
*vif
)
228 struct iwl_mvm_hw_queues_iface_iterator_data
*data
= _data
;
230 /* exclude the given vif */
231 if (vif
== data
->exclude_vif
)
234 data
->used_hw_queues
|= iwl_mvm_mac_get_queues_mask(vif
);
237 static void iwl_mvm_mac_sta_hw_queues_iter(void *_data
,
238 struct ieee80211_sta
*sta
)
240 struct iwl_mvm_hw_queues_iface_iterator_data
*data
= _data
;
241 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
243 /* Mark the queues used by the sta */
244 data
->used_hw_queues
|= mvmsta
->tfd_queue_msk
;
247 unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm
*mvm
,
248 struct ieee80211_vif
*exclude_vif
)
251 struct iwl_mvm_hw_queues_iface_iterator_data data
= {
252 .exclude_vif
= exclude_vif
,
254 BIT(IWL_MVM_OFFCHANNEL_QUEUE
) |
258 if (iwl_mvm_is_dqa_supported(mvm
))
259 data
.used_hw_queues
|= BIT(IWL_MVM_DQA_CMD_QUEUE
);
261 data
.used_hw_queues
|= BIT(IWL_MVM_CMD_QUEUE
);
263 lockdep_assert_held(&mvm
->mutex
);
265 /* mark all VIF used hw queues */
266 ieee80211_iterate_active_interfaces_atomic(
267 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
268 iwl_mvm_iface_hw_queues_iter
, &data
);
270 /* don't assign the same hw queues as TDLS stations */
271 ieee80211_iterate_stations_atomic(mvm
->hw
,
272 iwl_mvm_mac_sta_hw_queues_iter
,
276 * Some TDLS stations may be removed but are in the process of being
277 * drained. Don't touch their queues.
279 for_each_set_bit(sta_id
, mvm
->sta_drained
, IWL_MVM_STATION_COUNT
)
280 data
.used_hw_queues
|= mvm
->tfd_drained
[sta_id
];
282 return data
.used_hw_queues
;
285 static void iwl_mvm_mac_iface_iterator(void *_data
, u8
*mac
,
286 struct ieee80211_vif
*vif
)
288 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
289 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
291 /* Iterator may already find the interface being added -- skip it */
292 if (vif
== data
->vif
) {
293 data
->found_vif
= true;
297 /* Mark MAC IDs as used by clearing the available bit, and
298 * (below) mark TSFs as used if their existing use is not
299 * compatible with the new interface type.
300 * No locking or atomic bit operations are needed since the
301 * data is on the stack of the caller function.
303 __clear_bit(mvmvif
->id
, data
->available_mac_ids
);
305 /* find a suitable tsf_id */
306 iwl_mvm_mac_tsf_id_iter(_data
, mac
, vif
);
309 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm
*mvm
,
310 struct ieee80211_vif
*vif
)
312 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
313 struct iwl_mvm_mac_iface_iterator_data data
= {
316 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
317 /* no preference yet */
318 .preferred_tsf
= NUM_TSF_IDS
,
321 ieee80211_iterate_active_interfaces_atomic(
322 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
323 iwl_mvm_mac_tsf_id_iter
, &data
);
325 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
326 mvmvif
->tsf_id
= data
.preferred_tsf
;
327 else if (!test_bit(mvmvif
->tsf_id
, data
.available_tsf_ids
))
328 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
332 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm
*mvm
,
333 struct ieee80211_vif
*vif
)
335 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
336 struct iwl_mvm_mac_iface_iterator_data data
= {
339 .available_mac_ids
= { (1 << NUM_MAC_INDEX_DRIVER
) - 1 },
340 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
341 /* no preference yet */
342 .preferred_tsf
= NUM_TSF_IDS
,
347 unsigned long used_hw_queues
;
350 * Allocate a MAC ID and a TSF for this MAC, along with the queues
351 * and other resources.
355 * Before the iterator, we start with all MAC IDs and TSFs available.
357 * During iteration, all MAC IDs are cleared that are in use by other
358 * virtual interfaces, and all TSF IDs are cleared that can't be used
359 * by this new virtual interface because they're used by an interface
360 * that can't share it with the new one.
361 * At the same time, we check if there's a preferred TSF in the case
362 * that we should share it with another interface.
365 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
367 case NL80211_IFTYPE_ADHOC
:
369 case NL80211_IFTYPE_STATION
:
374 __clear_bit(0, data
.available_mac_ids
);
377 ieee80211_iterate_active_interfaces_atomic(
378 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
379 iwl_mvm_mac_iface_iterator
, &data
);
381 used_hw_queues
= iwl_mvm_get_used_hw_queues(mvm
, vif
);
384 * In the case we're getting here during resume, it's similar to
385 * firmware restart, and with RESUME_ALL the iterator will find
386 * the vif being added already.
387 * We don't want to reassign any IDs in either case since doing
388 * so would probably assign different IDs (as interfaces aren't
389 * necessarily added in the same order), but the old IDs were
390 * preserved anyway, so skip ID assignment for both resume and
396 /* Therefore, in recovery, we can't get here */
397 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)))
400 mvmvif
->id
= find_first_bit(data
.available_mac_ids
,
401 NUM_MAC_INDEX_DRIVER
);
402 if (mvmvif
->id
== NUM_MAC_INDEX_DRIVER
) {
403 IWL_ERR(mvm
, "Failed to init MAC context - no free ID!\n");
408 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
409 mvmvif
->tsf_id
= data
.preferred_tsf
;
411 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
413 if (mvmvif
->tsf_id
== NUM_TSF_IDS
) {
414 IWL_ERR(mvm
, "Failed to init MAC context - no free TSF!\n");
421 INIT_LIST_HEAD(&mvmvif
->time_event_data
.list
);
422 mvmvif
->time_event_data
.id
= TE_MAX
;
424 /* No need to allocate data queues to P2P Device MAC.*/
425 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
) {
426 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
427 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
433 * Find available queues, and allocate them to the ACs. When in
434 * DQA-mode they aren't really used, and this is done only so the
435 * mac80211 ieee80211_check_queues() function won't fail
437 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
438 u8 queue
= find_first_zero_bit(&used_hw_queues
,
439 mvm
->first_agg_queue
);
441 if (!iwl_mvm_is_dqa_supported(mvm
) &&
442 queue
>= mvm
->first_agg_queue
) {
443 IWL_ERR(mvm
, "Failed to allocate queue\n");
448 __set_bit(queue
, &used_hw_queues
);
449 vif
->hw_queue
[ac
] = queue
;
452 /* Allocate the CAB queue for softAP and GO interfaces */
453 if (vif
->type
== NL80211_IFTYPE_AP
) {
456 if (!iwl_mvm_is_dqa_supported(mvm
)) {
457 queue
= find_first_zero_bit(&used_hw_queues
,
458 mvm
->first_agg_queue
);
460 if (queue
>= mvm
->first_agg_queue
) {
461 IWL_ERR(mvm
, "Failed to allocate cab queue\n");
466 queue
= IWL_MVM_DQA_GCAST_QUEUE
;
469 vif
->cab_queue
= queue
;
471 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
474 mvmvif
->bcast_sta
.sta_id
= IWL_MVM_STATION_COUNT
;
475 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
477 for (i
= 0; i
< NUM_IWL_MVM_SMPS_REQ
; i
++)
478 mvmvif
->smps_requests
[i
] = IEEE80211_SMPS_AUTOMATIC
;
483 memset(mvmvif
, 0, sizeof(struct iwl_mvm_vif
));
484 memset(vif
->hw_queue
, IEEE80211_INVAL_HW_QUEUE
, sizeof(vif
->hw_queue
));
485 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
489 int iwl_mvm_mac_ctxt_init(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
491 unsigned int wdg_timeout
=
492 iwl_mvm_get_wd_timeout(mvm
, vif
, false, false);
496 lockdep_assert_held(&mvm
->mutex
);
498 ret
= iwl_mvm_mac_ctxt_allocate_resources(mvm
, vif
);
503 case NL80211_IFTYPE_P2P_DEVICE
:
504 if (!iwl_mvm_is_dqa_supported(mvm
))
505 iwl_mvm_enable_ac_txq(mvm
, IWL_MVM_OFFCHANNEL_QUEUE
,
506 IWL_MVM_OFFCHANNEL_QUEUE
,
507 IWL_MVM_TX_FIFO_VO
, 0,
510 case NL80211_IFTYPE_AP
:
511 iwl_mvm_enable_ac_txq(mvm
, vif
->cab_queue
, vif
->cab_queue
,
512 IWL_MVM_TX_FIFO_MCAST
, 0, wdg_timeout
);
515 /* If DQA is supported - queues will be enabled when needed */
516 if (iwl_mvm_is_dqa_supported(mvm
))
519 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
520 iwl_mvm_enable_ac_txq(mvm
, vif
->hw_queue
[ac
],
522 iwl_mvm_ac_to_tx_fifo
[ac
], 0,
530 void iwl_mvm_mac_ctxt_release(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
534 lockdep_assert_held(&mvm
->mutex
);
537 case NL80211_IFTYPE_P2P_DEVICE
:
538 if (!iwl_mvm_is_dqa_supported(mvm
))
539 iwl_mvm_disable_txq(mvm
, IWL_MVM_OFFCHANNEL_QUEUE
,
540 IWL_MVM_OFFCHANNEL_QUEUE
,
541 IWL_MAX_TID_COUNT
, 0);
543 iwl_mvm_disable_txq(mvm
,
544 IWL_MVM_DQA_P2P_DEVICE_QUEUE
,
545 vif
->hw_queue
[0], IWL_MAX_TID_COUNT
,
549 case NL80211_IFTYPE_AP
:
550 iwl_mvm_disable_txq(mvm
, vif
->cab_queue
, vif
->cab_queue
,
551 IWL_MAX_TID_COUNT
, 0);
553 if (iwl_mvm_is_dqa_supported(mvm
))
554 iwl_mvm_disable_txq(mvm
,
555 IWL_MVM_DQA_AP_PROBE_RESP_QUEUE
,
556 vif
->hw_queue
[0], IWL_MAX_TID_COUNT
,
561 * If DQA is supported - queues were already disabled, since in
562 * DQA-mode the queues are a property of the STA and not of the
563 * vif, and at this point the STA was already deleted
565 if (iwl_mvm_is_dqa_supported(mvm
))
568 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
569 iwl_mvm_disable_txq(mvm
, vif
->hw_queue
[ac
],
571 IWL_MAX_TID_COUNT
, 0);
575 static void iwl_mvm_ack_rates(struct iwl_mvm
*mvm
,
576 struct ieee80211_vif
*vif
,
577 enum nl80211_band band
,
578 u8
*cck_rates
, u8
*ofdm_rates
)
580 struct ieee80211_supported_band
*sband
;
581 unsigned long basic
= vif
->bss_conf
.basic_rates
;
582 int lowest_present_ofdm
= 100;
583 int lowest_present_cck
= 100;
588 sband
= mvm
->hw
->wiphy
->bands
[band
];
590 for_each_set_bit(i
, &basic
, BITS_PER_LONG
) {
591 int hw
= sband
->bitrates
[i
].hw_value
;
592 if (hw
>= IWL_FIRST_OFDM_RATE
) {
593 ofdm
|= BIT(hw
- IWL_FIRST_OFDM_RATE
);
594 if (lowest_present_ofdm
> hw
)
595 lowest_present_ofdm
= hw
;
597 BUILD_BUG_ON(IWL_FIRST_CCK_RATE
!= 0);
600 if (lowest_present_cck
> hw
)
601 lowest_present_cck
= hw
;
606 * Now we've got the basic rates as bitmaps in the ofdm and cck
607 * variables. This isn't sufficient though, as there might not
608 * be all the right rates in the bitmap. E.g. if the only basic
609 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
610 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
612 * [...] a STA responding to a received frame shall transmit
613 * its Control Response frame [...] at the highest rate in the
614 * BSSBasicRateSet parameter that is less than or equal to the
615 * rate of the immediately previous frame in the frame exchange
616 * sequence ([...]) and that is of the same modulation class
617 * ([...]) as the received frame. If no rate contained in the
618 * BSSBasicRateSet parameter meets these conditions, then the
619 * control frame sent in response to a received frame shall be
620 * transmitted at the highest mandatory rate of the PHY that is
621 * less than or equal to the rate of the received frame, and
622 * that is of the same modulation class as the received frame.
624 * As a consequence, we need to add all mandatory rates that are
625 * lower than all of the basic rates to these bitmaps.
628 if (IWL_RATE_24M_INDEX
< lowest_present_ofdm
)
629 ofdm
|= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE
;
630 if (IWL_RATE_12M_INDEX
< lowest_present_ofdm
)
631 ofdm
|= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE
;
632 /* 6M already there or needed so always add */
633 ofdm
|= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE
;
636 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
638 * - if no CCK rates are basic, it must be ERP since there must
639 * be some basic rates at all, so they're OFDM => ERP PHY
640 * (or we're in 5 GHz, and the cck bitmap will never be used)
641 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
642 * - if 5.5M is basic, 1M and 2M are mandatory
643 * - if 2M is basic, 1M is mandatory
644 * - if 1M is basic, that's the only valid ACK rate.
645 * As a consequence, it's not as complicated as it sounds, just add
646 * any lower rates to the ACK rate bitmap.
648 if (IWL_RATE_11M_INDEX
< lowest_present_cck
)
649 cck
|= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE
;
650 if (IWL_RATE_5M_INDEX
< lowest_present_cck
)
651 cck
|= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE
;
652 if (IWL_RATE_2M_INDEX
< lowest_present_cck
)
653 cck
|= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE
;
654 /* 1M already there or needed so always add */
655 cck
|= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE
;
661 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm
*mvm
,
662 struct ieee80211_vif
*vif
,
663 struct iwl_mac_ctx_cmd
*cmd
)
665 /* for both sta and ap, ht_operation_mode hold the protection_mode */
666 u8 protection_mode
= vif
->bss_conf
.ht_operation_mode
&
667 IEEE80211_HT_OP_MODE_PROTECTION
;
668 /* The fw does not distinguish between ht and fat */
669 u32 ht_flag
= MAC_PROT_FLG_HT_PROT
| MAC_PROT_FLG_FAT_PROT
;
671 IWL_DEBUG_RATE(mvm
, "protection mode set to %d\n", protection_mode
);
673 * See section 9.23.3.1 of IEEE 80211-2012.
674 * Nongreenfield HT STAs Present is not supported.
676 switch (protection_mode
) {
677 case IEEE80211_HT_OP_MODE_PROTECTION_NONE
:
679 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER
:
680 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
681 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
683 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
684 /* Protect when channel wider than 20MHz */
685 if (vif
->bss_conf
.chandef
.width
> NL80211_CHAN_WIDTH_20
)
686 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
689 IWL_ERR(mvm
, "Illegal protection mode %d\n",
695 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm
*mvm
,
696 struct ieee80211_vif
*vif
,
697 struct iwl_mac_ctx_cmd
*cmd
,
698 const u8
*bssid_override
,
701 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
702 struct ieee80211_chanctx_conf
*chanctx
;
703 bool ht_enabled
= !!(vif
->bss_conf
.ht_operation_mode
&
704 IEEE80211_HT_OP_MODE_PROTECTION
);
705 u8 cck_ack_rates
, ofdm_ack_rates
;
706 const u8
*bssid
= bssid_override
?: vif
->bss_conf
.bssid
;
709 cmd
->id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
711 cmd
->action
= cpu_to_le32(action
);
714 case NL80211_IFTYPE_STATION
:
716 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_STA
);
718 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_BSS_STA
);
720 case NL80211_IFTYPE_AP
:
721 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_GO
);
723 case NL80211_IFTYPE_MONITOR
:
724 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_LISTENER
);
726 case NL80211_IFTYPE_P2P_DEVICE
:
727 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE
);
729 case NL80211_IFTYPE_ADHOC
:
730 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_IBSS
);
736 cmd
->tsf_id
= cpu_to_le32(mvmvif
->tsf_id
);
738 memcpy(cmd
->node_addr
, vif
->addr
, ETH_ALEN
);
741 memcpy(cmd
->bssid_addr
, bssid
, ETH_ALEN
);
743 eth_broadcast_addr(cmd
->bssid_addr
);
746 chanctx
= rcu_dereference(vif
->chanctx_conf
);
747 iwl_mvm_ack_rates(mvm
, vif
, chanctx
? chanctx
->def
.chan
->band
749 &cck_ack_rates
, &ofdm_ack_rates
);
752 cmd
->cck_rates
= cpu_to_le32((u32
)cck_ack_rates
);
753 cmd
->ofdm_rates
= cpu_to_le32((u32
)ofdm_ack_rates
);
755 cmd
->cck_short_preamble
=
756 cpu_to_le32(vif
->bss_conf
.use_short_preamble
?
757 MAC_FLG_SHORT_PREAMBLE
: 0);
759 cpu_to_le32(vif
->bss_conf
.use_short_slot
?
760 MAC_FLG_SHORT_SLOT
: 0);
762 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
);
764 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
765 u8 txf
= iwl_mvm_ac_to_tx_fifo
[i
];
767 cmd
->ac
[txf
].cw_min
=
768 cpu_to_le16(mvmvif
->queue_params
[i
].cw_min
);
769 cmd
->ac
[txf
].cw_max
=
770 cpu_to_le16(mvmvif
->queue_params
[i
].cw_max
);
771 cmd
->ac
[txf
].edca_txop
=
772 cpu_to_le16(mvmvif
->queue_params
[i
].txop
* 32);
773 cmd
->ac
[txf
].aifsn
= mvmvif
->queue_params
[i
].aifs
;
774 cmd
->ac
[txf
].fifos_mask
= BIT(txf
);
777 if (vif
->bss_conf
.qos
)
778 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA
);
780 if (vif
->bss_conf
.use_cts_prot
)
781 cmd
->protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
783 IWL_DEBUG_RATE(mvm
, "use_cts_prot %d, ht_operation_mode %d\n",
784 vif
->bss_conf
.use_cts_prot
,
785 vif
->bss_conf
.ht_operation_mode
);
786 if (vif
->bss_conf
.chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
)
787 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_TGN
);
789 iwl_mvm_mac_ctxt_set_ht_flags(mvm
, vif
, cmd
);
792 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm
*mvm
,
793 struct iwl_mac_ctx_cmd
*cmd
)
795 int ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
798 IWL_ERR(mvm
, "Failed to send MAC context (action:%d): %d\n",
799 le32_to_cpu(cmd
->action
), ret
);
803 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm
*mvm
,
804 struct ieee80211_vif
*vif
,
805 u32 action
, bool force_assoc_off
,
806 const u8
*bssid_override
)
808 struct iwl_mac_ctx_cmd cmd
= {};
809 struct iwl_mac_data_sta
*ctxt_sta
;
811 WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
);
813 /* Fill the common data for all mac context types */
814 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, bssid_override
, action
);
817 struct ieee80211_p2p_noa_attr
*noa
=
818 &vif
->bss_conf
.p2p_noa_attr
;
820 cmd
.p2p_sta
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
821 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
822 ctxt_sta
= &cmd
.p2p_sta
.sta
;
827 /* We need the dtim_period to set the MAC as associated */
828 if (vif
->bss_conf
.assoc
&& vif
->bss_conf
.dtim_period
&&
833 * The DTIM count counts down, so when it is N that means N
834 * more beacon intervals happen until the DTIM TBTT. Therefore
835 * add this to the current time. If that ends up being in the
836 * future, the firmware will handle it.
838 * Also note that the system_timestamp (which we get here as
839 * "sync_device_ts") and TSF timestamp aren't at exactly the
840 * same offset in the frame -- the TSF is at the first symbol
841 * of the TSF, the system timestamp is at signal acquisition
842 * time. This means there's an offset between them of at most
843 * a few hundred microseconds (24 * 8 bits + PLCP time gives
844 * 384us in the longest case), this is currently not relevant
845 * as the firmware wakes up around 2ms before the TBTT.
847 dtim_offs
= vif
->bss_conf
.sync_dtim_count
*
848 vif
->bss_conf
.beacon_int
;
849 /* convert TU to usecs */
853 cpu_to_le64(vif
->bss_conf
.sync_tsf
+ dtim_offs
);
854 ctxt_sta
->dtim_time
=
855 cpu_to_le32(vif
->bss_conf
.sync_device_ts
+ dtim_offs
);
857 IWL_DEBUG_INFO(mvm
, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
858 le64_to_cpu(ctxt_sta
->dtim_tsf
),
859 le32_to_cpu(ctxt_sta
->dtim_time
),
862 ctxt_sta
->is_assoc
= cpu_to_le32(1);
864 ctxt_sta
->is_assoc
= cpu_to_le32(0);
866 /* Allow beacons to pass through as long as we are not
867 * associated, or we do not have dtim period information.
869 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
872 ctxt_sta
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
873 ctxt_sta
->bi_reciprocal
=
874 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
875 ctxt_sta
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
876 vif
->bss_conf
.dtim_period
);
877 ctxt_sta
->dtim_reciprocal
=
878 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
879 vif
->bss_conf
.dtim_period
));
881 ctxt_sta
->listen_interval
= cpu_to_le32(mvm
->hw
->conf
.listen_interval
);
882 ctxt_sta
->assoc_id
= cpu_to_le32(vif
->bss_conf
.aid
);
884 if (vif
->probe_req_reg
&& vif
->bss_conf
.assoc
&& vif
->p2p
)
885 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
887 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
890 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm
*mvm
,
891 struct ieee80211_vif
*vif
,
894 struct iwl_mac_ctx_cmd cmd
= {};
895 u32 tfd_queue_msk
= 0;
898 WARN_ON(vif
->type
!= NL80211_IFTYPE_MONITOR
);
900 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
902 if (!iwl_mvm_is_dqa_supported(mvm
)) {
903 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
904 if (vif
->hw_queue
[i
] != IEEE80211_INVAL_HW_QUEUE
)
905 tfd_queue_msk
|= BIT(vif
->hw_queue
[i
]);
908 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROMISC
|
909 MAC_FILTER_IN_CONTROL_AND_MGMT
|
910 MAC_FILTER_IN_BEACON
|
911 MAC_FILTER_IN_PROBE_REQUEST
|
912 MAC_FILTER_IN_CRC32
);
913 ieee80211_hw_set(mvm
->hw
, RX_INCLUDES_FCS
);
915 /* Allocate sniffer station */
916 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->snif_sta
, tfd_queue_msk
,
921 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
924 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm
*mvm
,
925 struct ieee80211_vif
*vif
,
928 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
929 struct iwl_mac_ctx_cmd cmd
= {};
931 WARN_ON(vif
->type
!= NL80211_IFTYPE_ADHOC
);
933 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
935 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_BEACON
|
936 MAC_FILTER_IN_PROBE_REQUEST
);
938 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
939 cmd
.ibss
.bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
940 cmd
.ibss
.bi_reciprocal
=
941 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
943 /* TODO: Assumes that the beacon id == mac context id */
944 cmd
.ibss
.beacon_template
= cpu_to_le32(mvmvif
->id
);
946 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
949 struct iwl_mvm_go_iterator_data
{
953 static void iwl_mvm_go_iterator(void *_data
, u8
*mac
, struct ieee80211_vif
*vif
)
955 struct iwl_mvm_go_iterator_data
*data
= _data
;
956 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
958 if (vif
->type
== NL80211_IFTYPE_AP
&& vif
->p2p
&&
959 mvmvif
->ap_ibss_active
)
960 data
->go_active
= true;
963 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm
*mvm
,
964 struct ieee80211_vif
*vif
,
967 struct iwl_mac_ctx_cmd cmd
= {};
968 struct iwl_mvm_go_iterator_data data
= {};
970 WARN_ON(vif
->type
!= NL80211_IFTYPE_P2P_DEVICE
);
972 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
974 cmd
.protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
976 /* Override the filter flags to accept only probe requests */
977 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
980 * This flag should be set to true when the P2P Device is
981 * discoverable and there is at least another active P2P GO. Settings
982 * this flag will allow the P2P Device to be discoverable on other
983 * channels in addition to its listen channel.
984 * Note that this flag should not be set in other cases as it opens the
985 * Rx filters on all MAC and increases the number of interrupts.
987 ieee80211_iterate_active_interfaces_atomic(
988 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
989 iwl_mvm_go_iterator
, &data
);
991 cmd
.p2p_dev
.is_disc_extended
= cpu_to_le32(data
.go_active
? 1 : 0);
992 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
995 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm
*mvm
,
996 struct iwl_mac_beacon_cmd_v6
*beacon_cmd
,
997 u8
*beacon
, u32 frame_size
)
1000 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
1002 /* The index is relative to frame start but we start looking at the
1003 * variable-length part of the beacon. */
1004 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
1006 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
1007 while ((tim_idx
< (frame_size
- 2)) &&
1008 (beacon
[tim_idx
] != WLAN_EID_TIM
))
1009 tim_idx
+= beacon
[tim_idx
+1] + 2;
1011 /* If TIM field was found, set variables */
1012 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
1013 beacon_cmd
->tim_idx
= cpu_to_le32(tim_idx
);
1014 beacon_cmd
->tim_size
= cpu_to_le32((u32
)beacon
[tim_idx
+1]);
1016 IWL_WARN(mvm
, "Unable to find TIM Element in beacon\n");
1020 static u32
iwl_mvm_find_ie_offset(u8
*beacon
, u8 eid
, u32 frame_size
)
1022 struct ieee80211_mgmt
*mgmt
= (void *)beacon
;
1025 if (WARN_ON_ONCE(frame_size
<= (mgmt
->u
.beacon
.variable
- beacon
)))
1028 frame_size
-= mgmt
->u
.beacon
.variable
- beacon
;
1030 ie
= cfg80211_find_ie(eid
, mgmt
->u
.beacon
.variable
, frame_size
);
1037 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm
*mvm
,
1038 struct ieee80211_vif
*vif
,
1039 struct sk_buff
*beacon
)
1041 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1042 struct iwl_host_cmd cmd
= {
1043 .id
= BEACON_TEMPLATE_CMD
,
1047 struct iwl_mac_beacon_cmd_v6 beacon_cmd_v6
;
1048 struct iwl_mac_beacon_cmd beacon_cmd
;
1050 struct ieee80211_tx_info
*info
;
1054 if (WARN_ON(!beacon
))
1057 beacon_skb_len
= beacon
->len
;
1059 /* TODO: for now the beacon template id is set to be the mac context id.
1060 * Might be better to handle it as another resource ... */
1061 u
.beacon_cmd_v6
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
1062 info
= IEEE80211_SKB_CB(beacon
);
1064 /* Set up TX command fields */
1065 u
.beacon_cmd_v6
.tx
.len
= cpu_to_le16((u16
)beacon_skb_len
);
1066 u
.beacon_cmd_v6
.tx
.sta_id
= mvmvif
->bcast_sta
.sta_id
;
1067 u
.beacon_cmd_v6
.tx
.life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
1068 tx_flags
= TX_CMD_FLG_SEQ_CTL
| TX_CMD_FLG_TSF
;
1070 iwl_mvm_bt_coex_tx_prio(mvm
, (void *)beacon
->data
, info
, 0) <<
1071 TX_CMD_FLG_BT_PRIO_POS
;
1072 u
.beacon_cmd_v6
.tx
.tx_flags
= cpu_to_le32(tx_flags
);
1074 if (!fw_has_capa(&mvm
->fw
->ucode_capa
,
1075 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION
)) {
1076 mvm
->mgmt_last_antenna_idx
=
1077 iwl_mvm_next_antenna(mvm
, iwl_mvm_get_valid_tx_ant(mvm
),
1078 mvm
->mgmt_last_antenna_idx
);
1081 u
.beacon_cmd_v6
.tx
.rate_n_flags
=
1082 cpu_to_le32(BIT(mvm
->mgmt_last_antenna_idx
) <<
1085 if (info
->band
== NL80211_BAND_5GHZ
|| vif
->p2p
) {
1086 rate
= IWL_FIRST_OFDM_RATE
;
1088 rate
= IWL_FIRST_CCK_RATE
;
1089 u
.beacon_cmd_v6
.tx
.rate_n_flags
|=
1090 cpu_to_le32(RATE_MCS_CCK_MSK
);
1092 u
.beacon_cmd_v6
.tx
.rate_n_flags
|=
1093 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate
));
1095 /* Set up TX beacon command fields */
1096 if (vif
->type
== NL80211_IFTYPE_AP
)
1097 iwl_mvm_mac_ctxt_set_tim(mvm
, &u
.beacon_cmd_v6
,
1101 /* Submit command */
1103 if (fw_has_capa(&mvm
->fw
->ucode_capa
,
1104 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD
)) {
1105 u
.beacon_cmd
.csa_offset
=
1106 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1107 WLAN_EID_CHANNEL_SWITCH
,
1109 u
.beacon_cmd
.ecsa_offset
=
1110 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1111 WLAN_EID_EXT_CHANSWITCH_ANN
,
1114 cmd
.len
[0] = sizeof(u
.beacon_cmd
);
1116 cmd
.len
[0] = sizeof(u
.beacon_cmd_v6
);
1120 cmd
.dataflags
[0] = 0;
1121 cmd
.len
[1] = beacon_skb_len
;
1122 cmd
.data
[1] = beacon
->data
;
1123 cmd
.dataflags
[1] = IWL_HCMD_DFL_DUP
;
1125 return iwl_mvm_send_cmd(mvm
, &cmd
);
1128 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1129 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm
*mvm
,
1130 struct ieee80211_vif
*vif
)
1132 struct sk_buff
*beacon
;
1135 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
&&
1136 vif
->type
!= NL80211_IFTYPE_ADHOC
);
1138 beacon
= ieee80211_beacon_get_template(mvm
->hw
, vif
, NULL
);
1142 ret
= iwl_mvm_mac_ctxt_send_beacon(mvm
, vif
, beacon
);
1143 dev_kfree_skb(beacon
);
1147 struct iwl_mvm_mac_ap_iterator_data
{
1148 struct iwl_mvm
*mvm
;
1149 struct ieee80211_vif
*vif
;
1150 u32 beacon_device_ts
;
1154 /* Find the beacon_device_ts and beacon_int for a managed interface */
1155 static void iwl_mvm_mac_ap_iterator(void *_data
, u8
*mac
,
1156 struct ieee80211_vif
*vif
)
1158 struct iwl_mvm_mac_ap_iterator_data
*data
= _data
;
1160 if (vif
->type
!= NL80211_IFTYPE_STATION
|| !vif
->bss_conf
.assoc
)
1163 /* Station client has higher priority over P2P client*/
1164 if (vif
->p2p
&& data
->beacon_device_ts
)
1167 data
->beacon_device_ts
= vif
->bss_conf
.sync_device_ts
;
1168 data
->beacon_int
= vif
->bss_conf
.beacon_int
;
1172 * Fill the specific data for mac context of type AP of P2P GO
1174 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm
*mvm
,
1175 struct ieee80211_vif
*vif
,
1176 struct iwl_mac_ctx_cmd
*cmd
,
1177 struct iwl_mac_data_ap
*ctxt_ap
,
1180 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1181 struct iwl_mvm_mac_ap_iterator_data data
= {
1184 .beacon_device_ts
= 0
1187 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1188 cmd
->ac
[IWL_MVM_TX_FIFO_VO
].fifos_mask
|= BIT(IWL_MVM_TX_FIFO_MCAST
);
1191 * in AP mode, pass probe requests and beacons from other APs
1192 * (needed for ht protection); when there're no any associated
1193 * station don't ask FW to pass beacons to prevent unnecessary
1196 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
1197 if (mvmvif
->ap_assoc_sta_count
|| !mvm
->drop_bcn_ap_mode
) {
1198 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
1199 IWL_DEBUG_HC(mvm
, "Asking FW to pass beacons\n");
1201 IWL_DEBUG_HC(mvm
, "No need to receive beacons\n");
1204 ctxt_ap
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
1205 ctxt_ap
->bi_reciprocal
=
1206 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
1207 ctxt_ap
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
1208 vif
->bss_conf
.dtim_period
);
1209 ctxt_ap
->dtim_reciprocal
=
1210 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
1211 vif
->bss_conf
.dtim_period
));
1213 ctxt_ap
->mcast_qid
= cpu_to_le32(vif
->cab_queue
);
1216 * Only set the beacon time when the MAC is being added, when we
1217 * just modify the MAC then we should keep the time -- the firmware
1218 * can otherwise have a "jumping" TBTT.
1222 * If there is a station/P2P client interface which is
1223 * associated, set the AP's TBTT far enough from the station's
1224 * TBTT. Otherwise, set it to the current system time
1226 ieee80211_iterate_active_interfaces_atomic(
1227 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1228 iwl_mvm_mac_ap_iterator
, &data
);
1230 if (data
.beacon_device_ts
) {
1231 u32 rand
= (prandom_u32() % (64 - 36)) + 36;
1232 mvmvif
->ap_beacon_time
= data
.beacon_device_ts
+
1233 ieee80211_tu_to_usec(data
.beacon_int
* rand
/
1236 mvmvif
->ap_beacon_time
=
1237 iwl_read_prph(mvm
->trans
,
1238 DEVICE_SYSTEM_TIME_REG
);
1242 ctxt_ap
->beacon_time
= cpu_to_le32(mvmvif
->ap_beacon_time
);
1243 ctxt_ap
->beacon_tsf
= 0; /* unused */
1245 /* TODO: Assume that the beacon id == mac context id */
1246 ctxt_ap
->beacon_template
= cpu_to_le32(mvmvif
->id
);
1249 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm
*mvm
,
1250 struct ieee80211_vif
*vif
,
1253 struct iwl_mac_ctx_cmd cmd
= {};
1255 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| vif
->p2p
);
1257 /* Fill the common data for all mac context types */
1258 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1260 /* Fill the data specific for ap mode */
1261 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
, &cmd
.ap
,
1262 action
== FW_CTXT_ACTION_ADD
);
1264 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1267 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm
*mvm
,
1268 struct ieee80211_vif
*vif
,
1271 struct iwl_mac_ctx_cmd cmd
= {};
1272 struct ieee80211_p2p_noa_attr
*noa
= &vif
->bss_conf
.p2p_noa_attr
;
1274 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| !vif
->p2p
);
1276 /* Fill the common data for all mac context types */
1277 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1279 /* Fill the data specific for GO mode */
1280 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
, &cmd
.go
.ap
,
1281 action
== FW_CTXT_ACTION_ADD
);
1283 cmd
.go
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
1284 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
1285 cmd
.go
.opp_ps_enabled
=
1286 cpu_to_le32(!!(noa
->oppps_ctwindow
&
1287 IEEE80211_P2P_OPPPS_ENABLE_BIT
));
1289 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1292 static int iwl_mvm_mac_ctx_send(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1293 u32 action
, bool force_assoc_off
,
1294 const u8
*bssid_override
)
1296 switch (vif
->type
) {
1297 case NL80211_IFTYPE_STATION
:
1298 return iwl_mvm_mac_ctxt_cmd_sta(mvm
, vif
, action
,
1302 case NL80211_IFTYPE_AP
:
1304 return iwl_mvm_mac_ctxt_cmd_ap(mvm
, vif
, action
);
1306 return iwl_mvm_mac_ctxt_cmd_go(mvm
, vif
, action
);
1308 case NL80211_IFTYPE_MONITOR
:
1309 return iwl_mvm_mac_ctxt_cmd_listener(mvm
, vif
, action
);
1310 case NL80211_IFTYPE_P2P_DEVICE
:
1311 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm
, vif
, action
);
1312 case NL80211_IFTYPE_ADHOC
:
1313 return iwl_mvm_mac_ctxt_cmd_ibss(mvm
, vif
, action
);
1321 int iwl_mvm_mac_ctxt_add(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1323 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1326 if (WARN_ONCE(mvmvif
->uploaded
, "Adding active MAC %pM/%d\n",
1327 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1330 ret
= iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_ADD
,
1335 /* will only do anything at resume from D3 time */
1336 iwl_mvm_set_last_nonqos_seq(mvm
, vif
);
1338 mvmvif
->uploaded
= true;
1342 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1343 bool force_assoc_off
, const u8
*bssid_override
)
1345 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1347 if (WARN_ONCE(!mvmvif
->uploaded
, "Changing inactive MAC %pM/%d\n",
1348 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1351 return iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_MODIFY
,
1352 force_assoc_off
, bssid_override
);
1355 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1357 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1358 struct iwl_mac_ctx_cmd cmd
;
1361 if (WARN_ONCE(!mvmvif
->uploaded
, "Removing inactive MAC %pM/%d\n",
1362 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1365 memset(&cmd
, 0, sizeof(cmd
));
1367 cmd
.id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
1369 cmd
.action
= cpu_to_le32(FW_CTXT_ACTION_REMOVE
);
1371 ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
1374 IWL_ERR(mvm
, "Failed to remove MAC context: %d\n", ret
);
1378 mvmvif
->uploaded
= false;
1380 if (vif
->type
== NL80211_IFTYPE_MONITOR
) {
1381 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS
, mvm
->hw
->flags
);
1382 iwl_mvm_dealloc_snif_sta(mvm
);
1388 static void iwl_mvm_csa_count_down(struct iwl_mvm
*mvm
,
1389 struct ieee80211_vif
*csa_vif
, u32 gp2
,
1392 struct iwl_mvm_vif
*mvmvif
=
1393 iwl_mvm_vif_from_mac80211(csa_vif
);
1395 /* Don't start to countdown from a failed beacon */
1396 if (!tx_success
&& !mvmvif
->csa_countdown
)
1399 mvmvif
->csa_countdown
= true;
1401 if (!ieee80211_csa_is_complete(csa_vif
)) {
1402 int c
= ieee80211_csa_update_counter(csa_vif
);
1404 iwl_mvm_mac_ctxt_beacon_changed(mvm
, csa_vif
);
1406 !iwl_mvm_te_scheduled(&mvmvif
->time_event_data
) && gp2
&&
1408 u32 rel_time
= (c
+ 1) *
1409 csa_vif
->bss_conf
.beacon_int
-
1410 IWL_MVM_CHANNEL_SWITCH_TIME_GO
;
1411 u32 apply_time
= gp2
+ rel_time
* 1024;
1413 iwl_mvm_schedule_csa_period(mvm
, csa_vif
,
1414 IWL_MVM_CHANNEL_SWITCH_TIME_GO
-
1415 IWL_MVM_CHANNEL_SWITCH_MARGIN
,
1418 } else if (!iwl_mvm_te_scheduled(&mvmvif
->time_event_data
)) {
1419 /* we don't have CSA NoA scheduled yet, switch now */
1420 ieee80211_csa_finish(csa_vif
);
1421 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);
1425 void iwl_mvm_rx_beacon_notif(struct iwl_mvm
*mvm
,
1426 struct iwl_rx_cmd_buffer
*rxb
)
1428 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1429 struct iwl_extended_beacon_notif
*beacon
= (void *)pkt
->data
;
1430 struct iwl_mvm_tx_resp
*beacon_notify_hdr
;
1431 struct ieee80211_vif
*csa_vif
;
1432 struct ieee80211_vif
*tx_blocked_vif
;
1435 lockdep_assert_held(&mvm
->mutex
);
1437 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1438 mvm
->ap_last_beacon_gp2
= le32_to_cpu(beacon
->gp2
);
1440 status
= le16_to_cpu(beacon_notify_hdr
->status
.status
) & TX_STATUS_MSK
;
1442 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1443 status
, beacon_notify_hdr
->failure_frame
,
1444 le64_to_cpu(beacon
->tsf
),
1445 mvm
->ap_last_beacon_gp2
,
1446 le32_to_cpu(beacon_notify_hdr
->initial_rate
));
1448 csa_vif
= rcu_dereference_protected(mvm
->csa_vif
,
1449 lockdep_is_held(&mvm
->mutex
));
1450 if (unlikely(csa_vif
&& csa_vif
->csa_active
))
1451 iwl_mvm_csa_count_down(mvm
, csa_vif
, mvm
->ap_last_beacon_gp2
,
1452 (status
== TX_STATUS_SUCCESS
));
1454 tx_blocked_vif
= rcu_dereference_protected(mvm
->csa_tx_blocked_vif
,
1455 lockdep_is_held(&mvm
->mutex
));
1456 if (unlikely(tx_blocked_vif
)) {
1457 struct iwl_mvm_vif
*mvmvif
=
1458 iwl_mvm_vif_from_mac80211(tx_blocked_vif
);
1461 * The channel switch is started and we have blocked the
1462 * stations. If this is the first beacon (the timeout wasn't
1463 * set), set the unblock timeout, otherwise countdown
1465 if (!mvm
->csa_tx_block_bcn_timeout
)
1466 mvm
->csa_tx_block_bcn_timeout
=
1467 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
;
1469 mvm
->csa_tx_block_bcn_timeout
--;
1471 /* Check if the timeout is expired, and unblock tx */
1472 if (mvm
->csa_tx_block_bcn_timeout
== 0) {
1473 iwl_mvm_modify_all_sta_disable_tx(mvm
, mvmvif
, false);
1474 RCU_INIT_POINTER(mvm
->csa_tx_blocked_vif
, NULL
);
1479 static void iwl_mvm_beacon_loss_iterator(void *_data
, u8
*mac
,
1480 struct ieee80211_vif
*vif
)
1482 struct iwl_missed_beacons_notif
*missed_beacons
= _data
;
1483 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1484 struct iwl_mvm
*mvm
= mvmvif
->mvm
;
1485 struct iwl_fw_dbg_trigger_missed_bcon
*bcon_trig
;
1486 struct iwl_fw_dbg_trigger_tlv
*trigger
;
1487 u32 stop_trig_missed_bcon
, stop_trig_missed_bcon_since_rx
;
1488 u32 rx_missed_bcon
, rx_missed_bcon_since_rx
;
1490 if (mvmvif
->id
!= (u16
)le32_to_cpu(missed_beacons
->mac_id
))
1493 rx_missed_bcon
= le32_to_cpu(missed_beacons
->consec_missed_beacons
);
1494 rx_missed_bcon_since_rx
=
1495 le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
);
1497 * TODO: the threshold should be adjusted based on latency conditions,
1498 * and/or in case of a CS flow on one of the other AP vifs.
1500 if (le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
) >
1501 IWL_MVM_MISSED_BEACONS_THRESHOLD
)
1502 ieee80211_beacon_loss(vif
);
1504 if (!iwl_fw_dbg_trigger_enabled(mvm
->fw
,
1505 FW_DBG_TRIGGER_MISSED_BEACONS
))
1508 trigger
= iwl_fw_dbg_get_trigger(mvm
->fw
,
1509 FW_DBG_TRIGGER_MISSED_BEACONS
);
1510 bcon_trig
= (void *)trigger
->data
;
1511 stop_trig_missed_bcon
= le32_to_cpu(bcon_trig
->stop_consec_missed_bcon
);
1512 stop_trig_missed_bcon_since_rx
=
1513 le32_to_cpu(bcon_trig
->stop_consec_missed_bcon_since_rx
);
1515 /* TODO: implement start trigger */
1517 if (!iwl_fw_dbg_trigger_check_stop(mvm
, vif
, trigger
))
1520 if (rx_missed_bcon_since_rx
>= stop_trig_missed_bcon_since_rx
||
1521 rx_missed_bcon
>= stop_trig_missed_bcon
)
1522 iwl_mvm_fw_dbg_collect_trig(mvm
, trigger
, NULL
);
1525 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm
*mvm
,
1526 struct iwl_rx_cmd_buffer
*rxb
)
1528 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1529 struct iwl_missed_beacons_notif
*mb
= (void *)pkt
->data
;
1532 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1533 le32_to_cpu(mb
->mac_id
),
1534 le32_to_cpu(mb
->consec_missed_beacons
),
1535 le32_to_cpu(mb
->consec_missed_beacons_since_last_rx
),
1536 le32_to_cpu(mb
->num_recvd_beacons
),
1537 le32_to_cpu(mb
->num_expected_beacons
));
1539 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1540 IEEE80211_IFACE_ITER_NORMAL
,
1541 iwl_mvm_beacon_loss_iterator
,
1545 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm
*mvm
,
1546 struct iwl_rx_cmd_buffer
*rxb
)
1548 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1549 struct iwl_stored_beacon_notif
*sb
= (void *)pkt
->data
;
1550 struct ieee80211_rx_status rx_status
;
1551 struct sk_buff
*skb
;
1552 u32 size
= le32_to_cpu(sb
->byte_count
);
1557 skb
= alloc_skb(size
, GFP_ATOMIC
);
1559 IWL_ERR(mvm
, "alloc_skb failed\n");
1563 /* update rx_status according to the notification's metadata */
1564 memset(&rx_status
, 0, sizeof(rx_status
));
1565 rx_status
.mactime
= le64_to_cpu(sb
->tsf
);
1566 /* TSF as indicated by the firmware is at INA time */
1567 rx_status
.flag
|= RX_FLAG_MACTIME_PLCP_START
;
1568 rx_status
.device_timestamp
= le32_to_cpu(sb
->system_time
);
1570 (sb
->phy_flags
& cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24
)) ?
1571 NL80211_BAND_2GHZ
: NL80211_BAND_5GHZ
;
1573 ieee80211_channel_to_frequency(le16_to_cpu(sb
->channel
),
1577 memcpy(skb_put(skb
, size
), sb
->data
, size
);
1578 memcpy(IEEE80211_SKB_RXCB(skb
), &rx_status
, sizeof(rx_status
));
1580 /* pass it as regular rx to mac80211 */
1581 ieee80211_rx_napi(mvm
->hw
, NULL
, skb
, NULL
);
1584 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm
*mvm
,
1585 struct iwl_rx_cmd_buffer
*rxb
)
1587 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1588 struct iwl_channel_switch_noa_notif
*notif
= (void *)pkt
->data
;
1589 struct ieee80211_vif
*csa_vif
;
1590 struct iwl_mvm_vif
*mvmvif
;
1591 int len
= iwl_rx_packet_payload_len(pkt
);
1594 if (WARN_ON_ONCE(len
< sizeof(*notif
)))
1599 csa_vif
= rcu_dereference(mvm
->csa_vif
);
1600 if (WARN_ON(!csa_vif
|| !csa_vif
->csa_active
))
1603 id_n_color
= le32_to_cpu(notif
->id_and_color
);
1605 mvmvif
= iwl_mvm_vif_from_mac80211(csa_vif
);
1606 if (WARN(FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
) != id_n_color
,
1607 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1608 FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
), id_n_color
))
1611 IWL_DEBUG_INFO(mvm
, "Channel Switch Started Notification\n");
1613 queue_delayed_work(system_wq
, &mvm
->cs_tx_unblock_dwork
,
1614 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
*
1615 csa_vif
->bss_conf
.beacon_int
));
1617 ieee80211_csa_finish(csa_vif
);
1621 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);