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 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 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
) |
255 BIT(mvm
->aux_queue
) |
256 BIT(IWL_MVM_CMD_QUEUE
),
259 lockdep_assert_held(&mvm
->mutex
);
261 /* mark all VIF used hw queues */
262 ieee80211_iterate_active_interfaces_atomic(
263 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
264 iwl_mvm_iface_hw_queues_iter
, &data
);
266 /* don't assign the same hw queues as TDLS stations */
267 ieee80211_iterate_stations_atomic(mvm
->hw
,
268 iwl_mvm_mac_sta_hw_queues_iter
,
272 * Some TDLS stations may be removed but are in the process of being
273 * drained. Don't touch their queues.
275 for_each_set_bit(sta_id
, mvm
->sta_drained
, IWL_MVM_STATION_COUNT
)
276 data
.used_hw_queues
|= mvm
->tfd_drained
[sta_id
];
278 return data
.used_hw_queues
;
281 static void iwl_mvm_mac_iface_iterator(void *_data
, u8
*mac
,
282 struct ieee80211_vif
*vif
)
284 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
285 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
287 /* Iterator may already find the interface being added -- skip it */
288 if (vif
== data
->vif
) {
289 data
->found_vif
= true;
293 /* Mark MAC IDs as used by clearing the available bit, and
294 * (below) mark TSFs as used if their existing use is not
295 * compatible with the new interface type.
296 * No locking or atomic bit operations are needed since the
297 * data is on the stack of the caller function.
299 __clear_bit(mvmvif
->id
, data
->available_mac_ids
);
301 /* find a suitable tsf_id */
302 iwl_mvm_mac_tsf_id_iter(_data
, mac
, vif
);
305 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm
*mvm
,
306 struct ieee80211_vif
*vif
)
308 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
309 struct iwl_mvm_mac_iface_iterator_data data
= {
312 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
313 /* no preference yet */
314 .preferred_tsf
= NUM_TSF_IDS
,
317 ieee80211_iterate_active_interfaces_atomic(
318 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
319 iwl_mvm_mac_tsf_id_iter
, &data
);
321 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
322 mvmvif
->tsf_id
= data
.preferred_tsf
;
323 else if (!test_bit(mvmvif
->tsf_id
, data
.available_tsf_ids
))
324 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
328 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm
*mvm
,
329 struct ieee80211_vif
*vif
)
331 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
332 struct iwl_mvm_mac_iface_iterator_data data
= {
335 .available_mac_ids
= { (1 << NUM_MAC_INDEX_DRIVER
) - 1 },
336 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
337 /* no preference yet */
338 .preferred_tsf
= NUM_TSF_IDS
,
343 unsigned long used_hw_queues
;
346 * Allocate a MAC ID and a TSF for this MAC, along with the queues
347 * and other resources.
351 * Before the iterator, we start with all MAC IDs and TSFs available.
353 * During iteration, all MAC IDs are cleared that are in use by other
354 * virtual interfaces, and all TSF IDs are cleared that can't be used
355 * by this new virtual interface because they're used by an interface
356 * that can't share it with the new one.
357 * At the same time, we check if there's a preferred TSF in the case
358 * that we should share it with another interface.
361 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
363 case NL80211_IFTYPE_ADHOC
:
365 case NL80211_IFTYPE_STATION
:
370 __clear_bit(0, data
.available_mac_ids
);
373 ieee80211_iterate_active_interfaces_atomic(
374 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
375 iwl_mvm_mac_iface_iterator
, &data
);
377 used_hw_queues
= iwl_mvm_get_used_hw_queues(mvm
, vif
);
380 * In the case we're getting here during resume, it's similar to
381 * firmware restart, and with RESUME_ALL the iterator will find
382 * the vif being added already.
383 * We don't want to reassign any IDs in either case since doing
384 * so would probably assign different IDs (as interfaces aren't
385 * necessarily added in the same order), but the old IDs were
386 * preserved anyway, so skip ID assignment for both resume and
392 /* Therefore, in recovery, we can't get here */
393 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)))
396 mvmvif
->id
= find_first_bit(data
.available_mac_ids
,
397 NUM_MAC_INDEX_DRIVER
);
398 if (mvmvif
->id
== NUM_MAC_INDEX_DRIVER
) {
399 IWL_ERR(mvm
, "Failed to init MAC context - no free ID!\n");
404 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
405 mvmvif
->tsf_id
= data
.preferred_tsf
;
407 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
409 if (mvmvif
->tsf_id
== NUM_TSF_IDS
) {
410 IWL_ERR(mvm
, "Failed to init MAC context - no free TSF!\n");
417 INIT_LIST_HEAD(&mvmvif
->time_event_data
.list
);
418 mvmvif
->time_event_data
.id
= TE_MAX
;
420 /* No need to allocate data queues to P2P Device MAC.*/
421 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
) {
422 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
423 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
428 /* Find available queues, and allocate them to the ACs */
429 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
430 u8 queue
= find_first_zero_bit(&used_hw_queues
,
431 mvm
->first_agg_queue
);
433 if (queue
>= mvm
->first_agg_queue
) {
434 IWL_ERR(mvm
, "Failed to allocate queue\n");
439 __set_bit(queue
, &used_hw_queues
);
440 vif
->hw_queue
[ac
] = queue
;
443 /* Allocate the CAB queue for softAP and GO interfaces */
444 if (vif
->type
== NL80211_IFTYPE_AP
) {
445 u8 queue
= find_first_zero_bit(&used_hw_queues
,
446 mvm
->first_agg_queue
);
448 if (queue
>= mvm
->first_agg_queue
) {
449 IWL_ERR(mvm
, "Failed to allocate cab queue\n");
454 vif
->cab_queue
= queue
;
456 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
459 mvmvif
->bcast_sta
.sta_id
= IWL_MVM_STATION_COUNT
;
460 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
462 for (i
= 0; i
< NUM_IWL_MVM_SMPS_REQ
; i
++)
463 mvmvif
->smps_requests
[i
] = IEEE80211_SMPS_AUTOMATIC
;
468 memset(mvmvif
, 0, sizeof(struct iwl_mvm_vif
));
469 memset(vif
->hw_queue
, IEEE80211_INVAL_HW_QUEUE
, sizeof(vif
->hw_queue
));
470 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
474 int iwl_mvm_mac_ctxt_init(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
476 unsigned int wdg_timeout
=
477 iwl_mvm_get_wd_timeout(mvm
, vif
, false, false);
481 lockdep_assert_held(&mvm
->mutex
);
483 ret
= iwl_mvm_mac_ctxt_allocate_resources(mvm
, vif
);
488 case NL80211_IFTYPE_P2P_DEVICE
:
489 iwl_mvm_enable_ac_txq(mvm
, IWL_MVM_OFFCHANNEL_QUEUE
,
490 IWL_MVM_OFFCHANNEL_QUEUE
,
491 IWL_MVM_TX_FIFO_VO
, 0, wdg_timeout
);
493 case NL80211_IFTYPE_AP
:
494 iwl_mvm_enable_ac_txq(mvm
, vif
->cab_queue
, vif
->cab_queue
,
495 IWL_MVM_TX_FIFO_MCAST
, 0, wdg_timeout
);
498 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
499 iwl_mvm_enable_ac_txq(mvm
, vif
->hw_queue
[ac
],
501 iwl_mvm_ac_to_tx_fifo
[ac
], 0,
509 void iwl_mvm_mac_ctxt_release(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
513 lockdep_assert_held(&mvm
->mutex
);
516 case NL80211_IFTYPE_P2P_DEVICE
:
517 iwl_mvm_disable_txq(mvm
, IWL_MVM_OFFCHANNEL_QUEUE
,
518 IWL_MVM_OFFCHANNEL_QUEUE
, IWL_MAX_TID_COUNT
,
521 case NL80211_IFTYPE_AP
:
522 iwl_mvm_disable_txq(mvm
, vif
->cab_queue
, vif
->cab_queue
,
523 IWL_MAX_TID_COUNT
, 0);
526 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
527 iwl_mvm_disable_txq(mvm
, vif
->hw_queue
[ac
],
529 IWL_MAX_TID_COUNT
, 0);
533 static void iwl_mvm_ack_rates(struct iwl_mvm
*mvm
,
534 struct ieee80211_vif
*vif
,
535 enum ieee80211_band band
,
536 u8
*cck_rates
, u8
*ofdm_rates
)
538 struct ieee80211_supported_band
*sband
;
539 unsigned long basic
= vif
->bss_conf
.basic_rates
;
540 int lowest_present_ofdm
= 100;
541 int lowest_present_cck
= 100;
546 sband
= mvm
->hw
->wiphy
->bands
[band
];
548 for_each_set_bit(i
, &basic
, BITS_PER_LONG
) {
549 int hw
= sband
->bitrates
[i
].hw_value
;
550 if (hw
>= IWL_FIRST_OFDM_RATE
) {
551 ofdm
|= BIT(hw
- IWL_FIRST_OFDM_RATE
);
552 if (lowest_present_ofdm
> hw
)
553 lowest_present_ofdm
= hw
;
555 BUILD_BUG_ON(IWL_FIRST_CCK_RATE
!= 0);
558 if (lowest_present_cck
> hw
)
559 lowest_present_cck
= hw
;
564 * Now we've got the basic rates as bitmaps in the ofdm and cck
565 * variables. This isn't sufficient though, as there might not
566 * be all the right rates in the bitmap. E.g. if the only basic
567 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
568 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
570 * [...] a STA responding to a received frame shall transmit
571 * its Control Response frame [...] at the highest rate in the
572 * BSSBasicRateSet parameter that is less than or equal to the
573 * rate of the immediately previous frame in the frame exchange
574 * sequence ([...]) and that is of the same modulation class
575 * ([...]) as the received frame. If no rate contained in the
576 * BSSBasicRateSet parameter meets these conditions, then the
577 * control frame sent in response to a received frame shall be
578 * transmitted at the highest mandatory rate of the PHY that is
579 * less than or equal to the rate of the received frame, and
580 * that is of the same modulation class as the received frame.
582 * As a consequence, we need to add all mandatory rates that are
583 * lower than all of the basic rates to these bitmaps.
586 if (IWL_RATE_24M_INDEX
< lowest_present_ofdm
)
587 ofdm
|= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE
;
588 if (IWL_RATE_12M_INDEX
< lowest_present_ofdm
)
589 ofdm
|= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE
;
590 /* 6M already there or needed so always add */
591 ofdm
|= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE
;
594 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
596 * - if no CCK rates are basic, it must be ERP since there must
597 * be some basic rates at all, so they're OFDM => ERP PHY
598 * (or we're in 5 GHz, and the cck bitmap will never be used)
599 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
600 * - if 5.5M is basic, 1M and 2M are mandatory
601 * - if 2M is basic, 1M is mandatory
602 * - if 1M is basic, that's the only valid ACK rate.
603 * As a consequence, it's not as complicated as it sounds, just add
604 * any lower rates to the ACK rate bitmap.
606 if (IWL_RATE_11M_INDEX
< lowest_present_cck
)
607 cck
|= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE
;
608 if (IWL_RATE_5M_INDEX
< lowest_present_cck
)
609 cck
|= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE
;
610 if (IWL_RATE_2M_INDEX
< lowest_present_cck
)
611 cck
|= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE
;
612 /* 1M already there or needed so always add */
613 cck
|= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE
;
619 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm
*mvm
,
620 struct ieee80211_vif
*vif
,
621 struct iwl_mac_ctx_cmd
*cmd
)
623 /* for both sta and ap, ht_operation_mode hold the protection_mode */
624 u8 protection_mode
= vif
->bss_conf
.ht_operation_mode
&
625 IEEE80211_HT_OP_MODE_PROTECTION
;
626 /* The fw does not distinguish between ht and fat */
627 u32 ht_flag
= MAC_PROT_FLG_HT_PROT
| MAC_PROT_FLG_FAT_PROT
;
629 IWL_DEBUG_RATE(mvm
, "protection mode set to %d\n", protection_mode
);
631 * See section 9.23.3.1 of IEEE 80211-2012.
632 * Nongreenfield HT STAs Present is not supported.
634 switch (protection_mode
) {
635 case IEEE80211_HT_OP_MODE_PROTECTION_NONE
:
637 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER
:
638 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
639 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
641 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
642 /* Protect when channel wider than 20MHz */
643 if (vif
->bss_conf
.chandef
.width
> NL80211_CHAN_WIDTH_20
)
644 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
647 IWL_ERR(mvm
, "Illegal protection mode %d\n",
653 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm
*mvm
,
654 struct ieee80211_vif
*vif
,
655 struct iwl_mac_ctx_cmd
*cmd
,
656 const u8
*bssid_override
,
659 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
660 struct ieee80211_chanctx_conf
*chanctx
;
661 bool ht_enabled
= !!(vif
->bss_conf
.ht_operation_mode
&
662 IEEE80211_HT_OP_MODE_PROTECTION
);
663 u8 cck_ack_rates
, ofdm_ack_rates
;
664 const u8
*bssid
= bssid_override
?: vif
->bss_conf
.bssid
;
667 cmd
->id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
669 cmd
->action
= cpu_to_le32(action
);
672 case NL80211_IFTYPE_STATION
:
674 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_STA
);
676 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_BSS_STA
);
678 case NL80211_IFTYPE_AP
:
679 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_GO
);
681 case NL80211_IFTYPE_MONITOR
:
682 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_LISTENER
);
684 case NL80211_IFTYPE_P2P_DEVICE
:
685 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE
);
687 case NL80211_IFTYPE_ADHOC
:
688 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_IBSS
);
694 cmd
->tsf_id
= cpu_to_le32(mvmvif
->tsf_id
);
696 memcpy(cmd
->node_addr
, vif
->addr
, ETH_ALEN
);
699 memcpy(cmd
->bssid_addr
, bssid
, ETH_ALEN
);
701 eth_broadcast_addr(cmd
->bssid_addr
);
704 chanctx
= rcu_dereference(vif
->chanctx_conf
);
705 iwl_mvm_ack_rates(mvm
, vif
, chanctx
? chanctx
->def
.chan
->band
706 : IEEE80211_BAND_2GHZ
,
707 &cck_ack_rates
, &ofdm_ack_rates
);
710 cmd
->cck_rates
= cpu_to_le32((u32
)cck_ack_rates
);
711 cmd
->ofdm_rates
= cpu_to_le32((u32
)ofdm_ack_rates
);
713 cmd
->cck_short_preamble
=
714 cpu_to_le32(vif
->bss_conf
.use_short_preamble
?
715 MAC_FLG_SHORT_PREAMBLE
: 0);
717 cpu_to_le32(vif
->bss_conf
.use_short_slot
?
718 MAC_FLG_SHORT_SLOT
: 0);
720 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
);
722 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
723 u8 txf
= iwl_mvm_ac_to_tx_fifo
[i
];
725 cmd
->ac
[txf
].cw_min
=
726 cpu_to_le16(mvmvif
->queue_params
[i
].cw_min
);
727 cmd
->ac
[txf
].cw_max
=
728 cpu_to_le16(mvmvif
->queue_params
[i
].cw_max
);
729 cmd
->ac
[txf
].edca_txop
=
730 cpu_to_le16(mvmvif
->queue_params
[i
].txop
* 32);
731 cmd
->ac
[txf
].aifsn
= mvmvif
->queue_params
[i
].aifs
;
732 cmd
->ac
[txf
].fifos_mask
= BIT(txf
);
735 if (vif
->type
== NL80211_IFTYPE_AP
) {
736 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
737 cmd
->ac
[IWL_MVM_TX_FIFO_VO
].fifos_mask
|=
738 BIT(IWL_MVM_TX_FIFO_MCAST
);
741 * in AP mode, pass probe requests and beacons from other APs
742 * (needed for ht protection); when there're no any associated
743 * station don't ask FW to pass beacons to prevent unnecessary
746 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
747 if (mvmvif
->ap_assoc_sta_count
) {
748 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
749 IWL_DEBUG_HC(mvm
, "Asking FW to pass beacons\n");
751 IWL_DEBUG_HC(mvm
, "No need to receive beacons\n");
755 if (vif
->bss_conf
.qos
)
756 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA
);
758 if (vif
->bss_conf
.use_cts_prot
)
759 cmd
->protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
761 IWL_DEBUG_RATE(mvm
, "use_cts_prot %d, ht_operation_mode %d\n",
762 vif
->bss_conf
.use_cts_prot
,
763 vif
->bss_conf
.ht_operation_mode
);
764 if (vif
->bss_conf
.chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
)
765 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_TGN
);
767 iwl_mvm_mac_ctxt_set_ht_flags(mvm
, vif
, cmd
);
770 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm
*mvm
,
771 struct iwl_mac_ctx_cmd
*cmd
)
773 int ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
776 IWL_ERR(mvm
, "Failed to send MAC context (action:%d): %d\n",
777 le32_to_cpu(cmd
->action
), ret
);
781 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm
*mvm
,
782 struct ieee80211_vif
*vif
,
783 u32 action
, bool force_assoc_off
,
784 const u8
*bssid_override
)
786 struct iwl_mac_ctx_cmd cmd
= {};
787 struct iwl_mac_data_sta
*ctxt_sta
;
789 WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
);
791 /* Fill the common data for all mac context types */
792 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, bssid_override
, action
);
795 struct ieee80211_p2p_noa_attr
*noa
=
796 &vif
->bss_conf
.p2p_noa_attr
;
798 cmd
.p2p_sta
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
799 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
800 ctxt_sta
= &cmd
.p2p_sta
.sta
;
805 /* We need the dtim_period to set the MAC as associated */
806 if (vif
->bss_conf
.assoc
&& vif
->bss_conf
.dtim_period
&&
811 * The DTIM count counts down, so when it is N that means N
812 * more beacon intervals happen until the DTIM TBTT. Therefore
813 * add this to the current time. If that ends up being in the
814 * future, the firmware will handle it.
816 * Also note that the system_timestamp (which we get here as
817 * "sync_device_ts") and TSF timestamp aren't at exactly the
818 * same offset in the frame -- the TSF is at the first symbol
819 * of the TSF, the system timestamp is at signal acquisition
820 * time. This means there's an offset between them of at most
821 * a few hundred microseconds (24 * 8 bits + PLCP time gives
822 * 384us in the longest case), this is currently not relevant
823 * as the firmware wakes up around 2ms before the TBTT.
825 dtim_offs
= vif
->bss_conf
.sync_dtim_count
*
826 vif
->bss_conf
.beacon_int
;
827 /* convert TU to usecs */
831 cpu_to_le64(vif
->bss_conf
.sync_tsf
+ dtim_offs
);
832 ctxt_sta
->dtim_time
=
833 cpu_to_le32(vif
->bss_conf
.sync_device_ts
+ dtim_offs
);
835 IWL_DEBUG_INFO(mvm
, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
836 le64_to_cpu(ctxt_sta
->dtim_tsf
),
837 le32_to_cpu(ctxt_sta
->dtim_time
),
840 ctxt_sta
->is_assoc
= cpu_to_le32(1);
842 ctxt_sta
->is_assoc
= cpu_to_le32(0);
844 /* Allow beacons to pass through as long as we are not
845 * associated, or we do not have dtim period information.
847 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
850 ctxt_sta
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
851 ctxt_sta
->bi_reciprocal
=
852 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
853 ctxt_sta
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
854 vif
->bss_conf
.dtim_period
);
855 ctxt_sta
->dtim_reciprocal
=
856 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
857 vif
->bss_conf
.dtim_period
));
859 ctxt_sta
->listen_interval
= cpu_to_le32(mvm
->hw
->conf
.listen_interval
);
860 ctxt_sta
->assoc_id
= cpu_to_le32(vif
->bss_conf
.aid
);
862 if (vif
->probe_req_reg
&& vif
->bss_conf
.assoc
&& vif
->p2p
)
863 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
865 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
868 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm
*mvm
,
869 struct ieee80211_vif
*vif
,
872 struct iwl_mac_ctx_cmd cmd
= {};
873 u32 tfd_queue_msk
= 0;
876 WARN_ON(vif
->type
!= NL80211_IFTYPE_MONITOR
);
878 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
880 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
881 if (vif
->hw_queue
[i
] != IEEE80211_INVAL_HW_QUEUE
)
882 tfd_queue_msk
|= BIT(vif
->hw_queue
[i
]);
884 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROMISC
|
885 MAC_FILTER_IN_CONTROL_AND_MGMT
|
886 MAC_FILTER_IN_BEACON
|
887 MAC_FILTER_IN_PROBE_REQUEST
|
888 MAC_FILTER_IN_CRC32
);
889 ieee80211_hw_set(mvm
->hw
, RX_INCLUDES_FCS
);
891 /* Allocate sniffer station */
892 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->snif_sta
, tfd_queue_msk
,
897 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
900 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm
*mvm
,
901 struct ieee80211_vif
*vif
,
904 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
905 struct iwl_mac_ctx_cmd cmd
= {};
907 WARN_ON(vif
->type
!= NL80211_IFTYPE_ADHOC
);
909 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
911 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_BEACON
|
912 MAC_FILTER_IN_PROBE_REQUEST
);
914 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
915 cmd
.ibss
.bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
916 cmd
.ibss
.bi_reciprocal
=
917 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
919 /* TODO: Assumes that the beacon id == mac context id */
920 cmd
.ibss
.beacon_template
= cpu_to_le32(mvmvif
->id
);
922 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
925 struct iwl_mvm_go_iterator_data
{
929 static void iwl_mvm_go_iterator(void *_data
, u8
*mac
, struct ieee80211_vif
*vif
)
931 struct iwl_mvm_go_iterator_data
*data
= _data
;
932 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
934 if (vif
->type
== NL80211_IFTYPE_AP
&& vif
->p2p
&&
935 mvmvif
->ap_ibss_active
)
936 data
->go_active
= true;
939 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm
*mvm
,
940 struct ieee80211_vif
*vif
,
943 struct iwl_mac_ctx_cmd cmd
= {};
944 struct iwl_mvm_go_iterator_data data
= {};
946 WARN_ON(vif
->type
!= NL80211_IFTYPE_P2P_DEVICE
);
948 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
950 cmd
.protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
952 /* Override the filter flags to accept only probe requests */
953 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
956 * This flag should be set to true when the P2P Device is
957 * discoverable and there is at least another active P2P GO. Settings
958 * this flag will allow the P2P Device to be discoverable on other
959 * channels in addition to its listen channel.
960 * Note that this flag should not be set in other cases as it opens the
961 * Rx filters on all MAC and increases the number of interrupts.
963 ieee80211_iterate_active_interfaces_atomic(
964 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
965 iwl_mvm_go_iterator
, &data
);
967 cmd
.p2p_dev
.is_disc_extended
= cpu_to_le32(data
.go_active
? 1 : 0);
968 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
971 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm
*mvm
,
972 struct iwl_mac_beacon_cmd
*beacon_cmd
,
973 u8
*beacon
, u32 frame_size
)
976 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
978 /* The index is relative to frame start but we start looking at the
979 * variable-length part of the beacon. */
980 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
982 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
983 while ((tim_idx
< (frame_size
- 2)) &&
984 (beacon
[tim_idx
] != WLAN_EID_TIM
))
985 tim_idx
+= beacon
[tim_idx
+1] + 2;
987 /* If TIM field was found, set variables */
988 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
989 beacon_cmd
->tim_idx
= cpu_to_le32(tim_idx
);
990 beacon_cmd
->tim_size
= cpu_to_le32((u32
)beacon
[tim_idx
+1]);
992 IWL_WARN(mvm
, "Unable to find TIM Element in beacon\n");
996 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm
*mvm
,
997 struct ieee80211_vif
*vif
,
998 struct sk_buff
*beacon
)
1000 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1001 struct iwl_host_cmd cmd
= {
1002 .id
= BEACON_TEMPLATE_CMD
,
1005 struct iwl_mac_beacon_cmd beacon_cmd
= {};
1006 struct ieee80211_tx_info
*info
;
1010 if (WARN_ON(!beacon
))
1013 beacon_skb_len
= beacon
->len
;
1015 /* TODO: for now the beacon template id is set to be the mac context id.
1016 * Might be better to handle it as another resource ... */
1017 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
1018 info
= IEEE80211_SKB_CB(beacon
);
1020 /* Set up TX command fields */
1021 beacon_cmd
.tx
.len
= cpu_to_le16((u16
)beacon_skb_len
);
1022 beacon_cmd
.tx
.sta_id
= mvmvif
->bcast_sta
.sta_id
;
1023 beacon_cmd
.tx
.life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
1024 tx_flags
= TX_CMD_FLG_SEQ_CTL
| TX_CMD_FLG_TSF
;
1026 iwl_mvm_bt_coex_tx_prio(mvm
, (void *)beacon
->data
, info
, 0) <<
1027 TX_CMD_FLG_BT_PRIO_POS
;
1028 beacon_cmd
.tx
.tx_flags
= cpu_to_le32(tx_flags
);
1030 if (!fw_has_capa(&mvm
->fw
->ucode_capa
,
1031 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION
)) {
1032 mvm
->mgmt_last_antenna_idx
=
1033 iwl_mvm_next_antenna(mvm
, iwl_mvm_get_valid_tx_ant(mvm
),
1034 mvm
->mgmt_last_antenna_idx
);
1037 beacon_cmd
.tx
.rate_n_flags
=
1038 cpu_to_le32(BIT(mvm
->mgmt_last_antenna_idx
) <<
1041 if (info
->band
== IEEE80211_BAND_5GHZ
|| vif
->p2p
) {
1042 rate
= IWL_FIRST_OFDM_RATE
;
1044 rate
= IWL_FIRST_CCK_RATE
;
1045 beacon_cmd
.tx
.rate_n_flags
|= cpu_to_le32(RATE_MCS_CCK_MSK
);
1047 beacon_cmd
.tx
.rate_n_flags
|=
1048 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate
));
1050 /* Set up TX beacon command fields */
1051 if (vif
->type
== NL80211_IFTYPE_AP
)
1052 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
,
1056 /* Submit command */
1057 cmd
.len
[0] = sizeof(beacon_cmd
);
1058 cmd
.data
[0] = &beacon_cmd
;
1059 cmd
.dataflags
[0] = 0;
1060 cmd
.len
[1] = beacon_skb_len
;
1061 cmd
.data
[1] = beacon
->data
;
1062 cmd
.dataflags
[1] = IWL_HCMD_DFL_DUP
;
1064 return iwl_mvm_send_cmd(mvm
, &cmd
);
1067 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1068 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm
*mvm
,
1069 struct ieee80211_vif
*vif
)
1071 struct sk_buff
*beacon
;
1074 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
&&
1075 vif
->type
!= NL80211_IFTYPE_ADHOC
);
1077 beacon
= ieee80211_beacon_get_template(mvm
->hw
, vif
, NULL
);
1081 ret
= iwl_mvm_mac_ctxt_send_beacon(mvm
, vif
, beacon
);
1082 dev_kfree_skb(beacon
);
1086 struct iwl_mvm_mac_ap_iterator_data
{
1087 struct iwl_mvm
*mvm
;
1088 struct ieee80211_vif
*vif
;
1089 u32 beacon_device_ts
;
1093 /* Find the beacon_device_ts and beacon_int for a managed interface */
1094 static void iwl_mvm_mac_ap_iterator(void *_data
, u8
*mac
,
1095 struct ieee80211_vif
*vif
)
1097 struct iwl_mvm_mac_ap_iterator_data
*data
= _data
;
1099 if (vif
->type
!= NL80211_IFTYPE_STATION
|| !vif
->bss_conf
.assoc
)
1102 /* Station client has higher priority over P2P client*/
1103 if (vif
->p2p
&& data
->beacon_device_ts
)
1106 data
->beacon_device_ts
= vif
->bss_conf
.sync_device_ts
;
1107 data
->beacon_int
= vif
->bss_conf
.beacon_int
;
1111 * Fill the specific data for mac context of type AP of P2P GO
1113 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm
*mvm
,
1114 struct ieee80211_vif
*vif
,
1115 struct iwl_mac_data_ap
*ctxt_ap
,
1118 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1119 struct iwl_mvm_mac_ap_iterator_data data
= {
1122 .beacon_device_ts
= 0
1125 ctxt_ap
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
1126 ctxt_ap
->bi_reciprocal
=
1127 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
1128 ctxt_ap
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
1129 vif
->bss_conf
.dtim_period
);
1130 ctxt_ap
->dtim_reciprocal
=
1131 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
1132 vif
->bss_conf
.dtim_period
));
1134 ctxt_ap
->mcast_qid
= cpu_to_le32(vif
->cab_queue
);
1137 * Only set the beacon time when the MAC is being added, when we
1138 * just modify the MAC then we should keep the time -- the firmware
1139 * can otherwise have a "jumping" TBTT.
1143 * If there is a station/P2P client interface which is
1144 * associated, set the AP's TBTT far enough from the station's
1145 * TBTT. Otherwise, set it to the current system time
1147 ieee80211_iterate_active_interfaces_atomic(
1148 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1149 iwl_mvm_mac_ap_iterator
, &data
);
1151 if (data
.beacon_device_ts
) {
1152 u32 rand
= (prandom_u32() % (64 - 36)) + 36;
1153 mvmvif
->ap_beacon_time
= data
.beacon_device_ts
+
1154 ieee80211_tu_to_usec(data
.beacon_int
* rand
/
1157 mvmvif
->ap_beacon_time
=
1158 iwl_read_prph(mvm
->trans
,
1159 DEVICE_SYSTEM_TIME_REG
);
1163 ctxt_ap
->beacon_time
= cpu_to_le32(mvmvif
->ap_beacon_time
);
1164 ctxt_ap
->beacon_tsf
= 0; /* unused */
1166 /* TODO: Assume that the beacon id == mac context id */
1167 ctxt_ap
->beacon_template
= cpu_to_le32(mvmvif
->id
);
1170 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm
*mvm
,
1171 struct ieee80211_vif
*vif
,
1174 struct iwl_mac_ctx_cmd cmd
= {};
1176 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| vif
->p2p
);
1178 /* Fill the common data for all mac context types */
1179 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1181 /* Fill the data specific for ap mode */
1182 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.ap
,
1183 action
== FW_CTXT_ACTION_ADD
);
1185 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1188 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm
*mvm
,
1189 struct ieee80211_vif
*vif
,
1192 struct iwl_mac_ctx_cmd cmd
= {};
1193 struct ieee80211_p2p_noa_attr
*noa
= &vif
->bss_conf
.p2p_noa_attr
;
1195 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| !vif
->p2p
);
1197 /* Fill the common data for all mac context types */
1198 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1200 /* Fill the data specific for GO mode */
1201 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.go
.ap
,
1202 action
== FW_CTXT_ACTION_ADD
);
1204 cmd
.go
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
1205 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
1206 cmd
.go
.opp_ps_enabled
=
1207 cpu_to_le32(!!(noa
->oppps_ctwindow
&
1208 IEEE80211_P2P_OPPPS_ENABLE_BIT
));
1210 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1213 static int iwl_mvm_mac_ctx_send(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1214 u32 action
, bool force_assoc_off
,
1215 const u8
*bssid_override
)
1217 switch (vif
->type
) {
1218 case NL80211_IFTYPE_STATION
:
1219 return iwl_mvm_mac_ctxt_cmd_sta(mvm
, vif
, action
,
1223 case NL80211_IFTYPE_AP
:
1225 return iwl_mvm_mac_ctxt_cmd_ap(mvm
, vif
, action
);
1227 return iwl_mvm_mac_ctxt_cmd_go(mvm
, vif
, action
);
1229 case NL80211_IFTYPE_MONITOR
:
1230 return iwl_mvm_mac_ctxt_cmd_listener(mvm
, vif
, action
);
1231 case NL80211_IFTYPE_P2P_DEVICE
:
1232 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm
, vif
, action
);
1233 case NL80211_IFTYPE_ADHOC
:
1234 return iwl_mvm_mac_ctxt_cmd_ibss(mvm
, vif
, action
);
1242 int iwl_mvm_mac_ctxt_add(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1244 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1247 if (WARN_ONCE(mvmvif
->uploaded
, "Adding active MAC %pM/%d\n",
1248 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1251 ret
= iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_ADD
,
1256 /* will only do anything at resume from D3 time */
1257 iwl_mvm_set_last_nonqos_seq(mvm
, vif
);
1259 mvmvif
->uploaded
= true;
1263 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1264 bool force_assoc_off
, const u8
*bssid_override
)
1266 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1268 if (WARN_ONCE(!mvmvif
->uploaded
, "Changing inactive MAC %pM/%d\n",
1269 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1272 return iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_MODIFY
,
1273 force_assoc_off
, bssid_override
);
1276 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1278 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1279 struct iwl_mac_ctx_cmd cmd
;
1282 if (WARN_ONCE(!mvmvif
->uploaded
, "Removing inactive MAC %pM/%d\n",
1283 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1286 memset(&cmd
, 0, sizeof(cmd
));
1288 cmd
.id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
1290 cmd
.action
= cpu_to_le32(FW_CTXT_ACTION_REMOVE
);
1292 ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
1295 IWL_ERR(mvm
, "Failed to remove MAC context: %d\n", ret
);
1299 mvmvif
->uploaded
= false;
1301 if (vif
->type
== NL80211_IFTYPE_MONITOR
) {
1302 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS
, mvm
->hw
->flags
);
1303 iwl_mvm_dealloc_snif_sta(mvm
);
1309 static void iwl_mvm_csa_count_down(struct iwl_mvm
*mvm
,
1310 struct ieee80211_vif
*csa_vif
, u32 gp2
,
1313 struct iwl_mvm_vif
*mvmvif
=
1314 iwl_mvm_vif_from_mac80211(csa_vif
);
1316 /* Don't start to countdown from a failed beacon */
1317 if (!tx_success
&& !mvmvif
->csa_countdown
)
1320 mvmvif
->csa_countdown
= true;
1322 if (!ieee80211_csa_is_complete(csa_vif
)) {
1323 int c
= ieee80211_csa_update_counter(csa_vif
);
1325 iwl_mvm_mac_ctxt_beacon_changed(mvm
, csa_vif
);
1327 !iwl_mvm_te_scheduled(&mvmvif
->time_event_data
) && gp2
&&
1329 u32 rel_time
= (c
+ 1) *
1330 csa_vif
->bss_conf
.beacon_int
-
1331 IWL_MVM_CHANNEL_SWITCH_TIME_GO
;
1332 u32 apply_time
= gp2
+ rel_time
* 1024;
1334 iwl_mvm_schedule_csa_period(mvm
, csa_vif
,
1335 IWL_MVM_CHANNEL_SWITCH_TIME_GO
-
1336 IWL_MVM_CHANNEL_SWITCH_MARGIN
,
1339 } else if (!iwl_mvm_te_scheduled(&mvmvif
->time_event_data
)) {
1340 /* we don't have CSA NoA scheduled yet, switch now */
1341 ieee80211_csa_finish(csa_vif
);
1342 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);
1346 void iwl_mvm_rx_beacon_notif(struct iwl_mvm
*mvm
,
1347 struct iwl_rx_cmd_buffer
*rxb
)
1349 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1350 struct iwl_extended_beacon_notif
*beacon
= (void *)pkt
->data
;
1351 struct iwl_mvm_tx_resp
*beacon_notify_hdr
;
1352 struct ieee80211_vif
*csa_vif
;
1353 struct ieee80211_vif
*tx_blocked_vif
;
1356 lockdep_assert_held(&mvm
->mutex
);
1358 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1359 mvm
->ap_last_beacon_gp2
= le32_to_cpu(beacon
->gp2
);
1361 status
= le16_to_cpu(beacon_notify_hdr
->status
.status
) & TX_STATUS_MSK
;
1363 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1364 status
, beacon_notify_hdr
->failure_frame
,
1365 le64_to_cpu(beacon
->tsf
),
1366 mvm
->ap_last_beacon_gp2
,
1367 le32_to_cpu(beacon_notify_hdr
->initial_rate
));
1369 csa_vif
= rcu_dereference_protected(mvm
->csa_vif
,
1370 lockdep_is_held(&mvm
->mutex
));
1371 if (unlikely(csa_vif
&& csa_vif
->csa_active
))
1372 iwl_mvm_csa_count_down(mvm
, csa_vif
, mvm
->ap_last_beacon_gp2
,
1373 (status
== TX_STATUS_SUCCESS
));
1375 tx_blocked_vif
= rcu_dereference_protected(mvm
->csa_tx_blocked_vif
,
1376 lockdep_is_held(&mvm
->mutex
));
1377 if (unlikely(tx_blocked_vif
)) {
1378 struct iwl_mvm_vif
*mvmvif
=
1379 iwl_mvm_vif_from_mac80211(tx_blocked_vif
);
1382 * The channel switch is started and we have blocked the
1383 * stations. If this is the first beacon (the timeout wasn't
1384 * set), set the unblock timeout, otherwise countdown
1386 if (!mvm
->csa_tx_block_bcn_timeout
)
1387 mvm
->csa_tx_block_bcn_timeout
=
1388 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
;
1390 mvm
->csa_tx_block_bcn_timeout
--;
1392 /* Check if the timeout is expired, and unblock tx */
1393 if (mvm
->csa_tx_block_bcn_timeout
== 0) {
1394 iwl_mvm_modify_all_sta_disable_tx(mvm
, mvmvif
, false);
1395 RCU_INIT_POINTER(mvm
->csa_tx_blocked_vif
, NULL
);
1400 static void iwl_mvm_beacon_loss_iterator(void *_data
, u8
*mac
,
1401 struct ieee80211_vif
*vif
)
1403 struct iwl_missed_beacons_notif
*missed_beacons
= _data
;
1404 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1405 struct iwl_mvm
*mvm
= mvmvif
->mvm
;
1406 struct iwl_fw_dbg_trigger_missed_bcon
*bcon_trig
;
1407 struct iwl_fw_dbg_trigger_tlv
*trigger
;
1408 u32 stop_trig_missed_bcon
, stop_trig_missed_bcon_since_rx
;
1409 u32 rx_missed_bcon
, rx_missed_bcon_since_rx
;
1411 if (mvmvif
->id
!= (u16
)le32_to_cpu(missed_beacons
->mac_id
))
1414 rx_missed_bcon
= le32_to_cpu(missed_beacons
->consec_missed_beacons
);
1415 rx_missed_bcon_since_rx
=
1416 le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
);
1418 * TODO: the threshold should be adjusted based on latency conditions,
1419 * and/or in case of a CS flow on one of the other AP vifs.
1421 if (le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
) >
1422 IWL_MVM_MISSED_BEACONS_THRESHOLD
)
1423 ieee80211_beacon_loss(vif
);
1425 if (!iwl_fw_dbg_trigger_enabled(mvm
->fw
,
1426 FW_DBG_TRIGGER_MISSED_BEACONS
))
1429 trigger
= iwl_fw_dbg_get_trigger(mvm
->fw
,
1430 FW_DBG_TRIGGER_MISSED_BEACONS
);
1431 bcon_trig
= (void *)trigger
->data
;
1432 stop_trig_missed_bcon
= le32_to_cpu(bcon_trig
->stop_consec_missed_bcon
);
1433 stop_trig_missed_bcon_since_rx
=
1434 le32_to_cpu(bcon_trig
->stop_consec_missed_bcon_since_rx
);
1436 /* TODO: implement start trigger */
1438 if (!iwl_fw_dbg_trigger_check_stop(mvm
, vif
, trigger
))
1441 if (rx_missed_bcon_since_rx
>= stop_trig_missed_bcon_since_rx
||
1442 rx_missed_bcon
>= stop_trig_missed_bcon
)
1443 iwl_mvm_fw_dbg_collect_trig(mvm
, trigger
, NULL
);
1446 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm
*mvm
,
1447 struct iwl_rx_cmd_buffer
*rxb
)
1449 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1450 struct iwl_missed_beacons_notif
*mb
= (void *)pkt
->data
;
1453 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1454 le32_to_cpu(mb
->mac_id
),
1455 le32_to_cpu(mb
->consec_missed_beacons
),
1456 le32_to_cpu(mb
->consec_missed_beacons_since_last_rx
),
1457 le32_to_cpu(mb
->num_recvd_beacons
),
1458 le32_to_cpu(mb
->num_expected_beacons
));
1460 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1461 IEEE80211_IFACE_ITER_NORMAL
,
1462 iwl_mvm_beacon_loss_iterator
,