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 - 2017 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 - 2017 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"
76 const u8 iwl_mvm_ac_to_tx_fifo
[] = {
83 const u8 iwl_mvm_ac_to_gen2_tx_fifo
[] = {
84 IWL_GEN2_EDCA_TX_FIFO_VO
,
85 IWL_GEN2_EDCA_TX_FIFO_VI
,
86 IWL_GEN2_EDCA_TX_FIFO_BE
,
87 IWL_GEN2_EDCA_TX_FIFO_BK
,
90 struct iwl_mvm_mac_iface_iterator_data
{
92 struct ieee80211_vif
*vif
;
93 unsigned long available_mac_ids
[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER
)];
94 unsigned long available_tsf_ids
[BITS_TO_LONGS(NUM_TSF_IDS
)];
95 enum iwl_tsf_id preferred_tsf
;
99 struct iwl_mvm_hw_queues_iface_iterator_data
{
100 struct ieee80211_vif
*exclude_vif
;
101 unsigned long used_hw_queues
;
104 static void iwl_mvm_mac_tsf_id_iter(void *_data
, u8
*mac
,
105 struct ieee80211_vif
*vif
)
107 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
108 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
111 /* Skip the interface for which we are trying to assign a tsf_id */
112 if (vif
== data
->vif
)
116 * The TSF is a hardware/firmware resource, there are 4 and
117 * the driver should assign and free them as needed. However,
118 * there are cases where 2 MACs should share the same TSF ID
119 * for the purpose of clock sync, an optimization to avoid
120 * clock drift causing overlapping TBTTs/DTIMs for a GO and
121 * client in the system.
123 * The firmware will decide according to the MAC type which
124 * will be the master and slave. Clients that need to sync
125 * with a remote station will be the master, and an AP or GO
128 * Depending on the new interface type it can be slaved to
129 * or become the master of an existing interface.
131 switch (data
->vif
->type
) {
132 case NL80211_IFTYPE_STATION
:
134 * The new interface is a client, so if the one we're iterating
135 * is an AP, and the beacon interval of the AP is a multiple or
136 * divisor of the beacon interval of the client, the same TSF
137 * should be used to avoid drift between the new client and
138 * existing AP. The existing AP will get drift updates from the
139 * new client context in this case.
141 if (vif
->type
!= NL80211_IFTYPE_AP
||
142 data
->preferred_tsf
!= NUM_TSF_IDS
||
143 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
146 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
147 vif
->bss_conf
.beacon_int
);
152 if ((data
->vif
->bss_conf
.beacon_int
-
153 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
154 data
->preferred_tsf
= mvmvif
->tsf_id
;
159 case NL80211_IFTYPE_AP
:
161 * The new interface is AP/GO, so if its beacon interval is a
162 * multiple or a divisor of the beacon interval of an existing
163 * interface, it should get drift updates from an existing
164 * client or use the same TSF as an existing GO. There's no
165 * drift between TSFs internally but if they used different
166 * TSFs then a new client MAC could update one of them and
167 * cause drift that way.
169 if ((vif
->type
!= NL80211_IFTYPE_AP
&&
170 vif
->type
!= NL80211_IFTYPE_STATION
) ||
171 data
->preferred_tsf
!= NUM_TSF_IDS
||
172 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
175 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
176 vif
->bss_conf
.beacon_int
);
181 if ((data
->vif
->bss_conf
.beacon_int
-
182 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
183 data
->preferred_tsf
= mvmvif
->tsf_id
;
189 * For all other interface types there's no need to
190 * take drift into account. Either they're exclusive
191 * like IBSS and monitor, or we don't care much about
192 * their TSF (like P2P Device), but we won't be able
193 * to share the TSF resource.
199 * Unless we exited above, we can't share the TSF resource
200 * that the virtual interface we're iterating over is using
201 * with the new one, so clear the available bit and if this
202 * was the preferred one, reset that as well.
204 __clear_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
);
206 if (data
->preferred_tsf
== mvmvif
->tsf_id
)
207 data
->preferred_tsf
= NUM_TSF_IDS
;
211 * Get the mask of the queues used by the vif
213 u32
iwl_mvm_mac_get_queues_mask(struct ieee80211_vif
*vif
)
217 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
)
218 return BIT(IWL_MVM_OFFCHANNEL_QUEUE
);
220 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
221 if (vif
->hw_queue
[ac
] != IEEE80211_INVAL_HW_QUEUE
)
222 qmask
|= BIT(vif
->hw_queue
[ac
]);
225 if (vif
->type
== NL80211_IFTYPE_AP
||
226 vif
->type
== NL80211_IFTYPE_ADHOC
)
227 qmask
|= BIT(vif
->cab_queue
);
232 static void iwl_mvm_iface_hw_queues_iter(void *_data
, u8
*mac
,
233 struct ieee80211_vif
*vif
)
235 struct iwl_mvm_hw_queues_iface_iterator_data
*data
= _data
;
237 /* exclude the given vif */
238 if (vif
== data
->exclude_vif
)
241 data
->used_hw_queues
|= iwl_mvm_mac_get_queues_mask(vif
);
244 unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm
*mvm
,
245 struct ieee80211_vif
*exclude_vif
)
247 struct iwl_mvm_hw_queues_iface_iterator_data data
= {
248 .exclude_vif
= exclude_vif
,
250 BIT(IWL_MVM_OFFCHANNEL_QUEUE
) |
251 BIT(mvm
->aux_queue
) |
252 BIT(IWL_MVM_DQA_GCAST_QUEUE
),
255 lockdep_assert_held(&mvm
->mutex
);
257 /* mark all VIF used hw queues */
258 ieee80211_iterate_active_interfaces_atomic(
259 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
260 iwl_mvm_iface_hw_queues_iter
, &data
);
262 return data
.used_hw_queues
;
265 static void iwl_mvm_mac_iface_iterator(void *_data
, u8
*mac
,
266 struct ieee80211_vif
*vif
)
268 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
269 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
271 /* Iterator may already find the interface being added -- skip it */
272 if (vif
== data
->vif
) {
273 data
->found_vif
= true;
277 /* Mark MAC IDs as used by clearing the available bit, and
278 * (below) mark TSFs as used if their existing use is not
279 * compatible with the new interface type.
280 * No locking or atomic bit operations are needed since the
281 * data is on the stack of the caller function.
283 __clear_bit(mvmvif
->id
, data
->available_mac_ids
);
285 /* find a suitable tsf_id */
286 iwl_mvm_mac_tsf_id_iter(_data
, mac
, vif
);
289 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm
*mvm
,
290 struct ieee80211_vif
*vif
)
292 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
293 struct iwl_mvm_mac_iface_iterator_data data
= {
296 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
297 /* no preference yet */
298 .preferred_tsf
= NUM_TSF_IDS
,
301 ieee80211_iterate_active_interfaces_atomic(
302 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
303 iwl_mvm_mac_tsf_id_iter
, &data
);
305 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
306 mvmvif
->tsf_id
= data
.preferred_tsf
;
307 else if (!test_bit(mvmvif
->tsf_id
, data
.available_tsf_ids
))
308 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
312 int iwl_mvm_mac_ctxt_init(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
314 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
315 struct iwl_mvm_mac_iface_iterator_data data
= {
318 .available_mac_ids
= { (1 << NUM_MAC_INDEX_DRIVER
) - 1 },
319 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
320 /* no preference yet */
321 .preferred_tsf
= NUM_TSF_IDS
,
325 int ret
, i
, queue_limit
;
326 unsigned long used_hw_queues
;
328 lockdep_assert_held(&mvm
->mutex
);
331 * Allocate a MAC ID and a TSF for this MAC, along with the queues
332 * and other resources.
336 * Before the iterator, we start with all MAC IDs and TSFs available.
338 * During iteration, all MAC IDs are cleared that are in use by other
339 * virtual interfaces, and all TSF IDs are cleared that can't be used
340 * by this new virtual interface because they're used by an interface
341 * that can't share it with the new one.
342 * At the same time, we check if there's a preferred TSF in the case
343 * that we should share it with another interface.
346 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
348 case NL80211_IFTYPE_ADHOC
:
350 case NL80211_IFTYPE_STATION
:
355 __clear_bit(0, data
.available_mac_ids
);
358 ieee80211_iterate_active_interfaces_atomic(
359 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
360 iwl_mvm_mac_iface_iterator
, &data
);
362 used_hw_queues
= iwl_mvm_get_used_hw_queues(mvm
, vif
);
365 * In the case we're getting here during resume, it's similar to
366 * firmware restart, and with RESUME_ALL the iterator will find
367 * the vif being added already.
368 * We don't want to reassign any IDs in either case since doing
369 * so would probably assign different IDs (as interfaces aren't
370 * necessarily added in the same order), but the old IDs were
371 * preserved anyway, so skip ID assignment for both resume and
377 /* Therefore, in recovery, we can't get here */
378 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)))
381 mvmvif
->id
= find_first_bit(data
.available_mac_ids
,
382 NUM_MAC_INDEX_DRIVER
);
383 if (mvmvif
->id
== NUM_MAC_INDEX_DRIVER
) {
384 IWL_ERR(mvm
, "Failed to init MAC context - no free ID!\n");
389 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
390 mvmvif
->tsf_id
= data
.preferred_tsf
;
392 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
394 if (mvmvif
->tsf_id
== NUM_TSF_IDS
) {
395 IWL_ERR(mvm
, "Failed to init MAC context - no free TSF!\n");
402 INIT_LIST_HEAD(&mvmvif
->time_event_data
.list
);
403 mvmvif
->time_event_data
.id
= TE_MAX
;
405 /* No need to allocate data queues to P2P Device MAC.*/
406 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
) {
407 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
408 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
414 * queues in mac80211 almost entirely independent of
415 * the ones here - no real limit
417 queue_limit
= IEEE80211_MAX_QUEUES
;
418 BUILD_BUG_ON(IEEE80211_MAX_QUEUES
>
420 sizeof(mvm
->hw_queue_to_mac80211
[0]));
423 * Find available queues, and allocate them to the ACs. When in
424 * DQA-mode they aren't really used, and this is done only so the
425 * mac80211 ieee80211_check_queues() function won't fail
427 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
428 u8 queue
= find_first_zero_bit(&used_hw_queues
, queue_limit
);
430 if (queue
>= queue_limit
) {
431 IWL_ERR(mvm
, "Failed to allocate queue\n");
436 __set_bit(queue
, &used_hw_queues
);
437 vif
->hw_queue
[ac
] = queue
;
440 /* Allocate the CAB queue for softAP and GO interfaces */
441 if (vif
->type
== NL80211_IFTYPE_AP
) {
443 * For TVQM this will be overwritten later with the FW assigned
444 * queue value (when queue is enabled).
446 mvmvif
->cab_queue
= IWL_MVM_DQA_GCAST_QUEUE
;
447 vif
->cab_queue
= IWL_MVM_DQA_GCAST_QUEUE
;
449 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
452 mvmvif
->bcast_sta
.sta_id
= IWL_MVM_INVALID_STA
;
453 mvmvif
->mcast_sta
.sta_id
= IWL_MVM_INVALID_STA
;
454 mvmvif
->ap_sta_id
= IWL_MVM_INVALID_STA
;
456 for (i
= 0; i
< NUM_IWL_MVM_SMPS_REQ
; i
++)
457 mvmvif
->smps_requests
[i
] = IEEE80211_SMPS_AUTOMATIC
;
462 memset(mvmvif
, 0, sizeof(struct iwl_mvm_vif
));
463 memset(vif
->hw_queue
, IEEE80211_INVAL_HW_QUEUE
, sizeof(vif
->hw_queue
));
464 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
468 static void iwl_mvm_ack_rates(struct iwl_mvm
*mvm
,
469 struct ieee80211_vif
*vif
,
470 enum nl80211_band band
,
471 u8
*cck_rates
, u8
*ofdm_rates
)
473 struct ieee80211_supported_band
*sband
;
474 unsigned long basic
= vif
->bss_conf
.basic_rates
;
475 int lowest_present_ofdm
= 100;
476 int lowest_present_cck
= 100;
481 sband
= mvm
->hw
->wiphy
->bands
[band
];
483 for_each_set_bit(i
, &basic
, BITS_PER_LONG
) {
484 int hw
= sband
->bitrates
[i
].hw_value
;
485 if (hw
>= IWL_FIRST_OFDM_RATE
) {
486 ofdm
|= BIT(hw
- IWL_FIRST_OFDM_RATE
);
487 if (lowest_present_ofdm
> hw
)
488 lowest_present_ofdm
= hw
;
490 BUILD_BUG_ON(IWL_FIRST_CCK_RATE
!= 0);
493 if (lowest_present_cck
> hw
)
494 lowest_present_cck
= hw
;
499 * Now we've got the basic rates as bitmaps in the ofdm and cck
500 * variables. This isn't sufficient though, as there might not
501 * be all the right rates in the bitmap. E.g. if the only basic
502 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
503 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
505 * [...] a STA responding to a received frame shall transmit
506 * its Control Response frame [...] at the highest rate in the
507 * BSSBasicRateSet parameter that is less than or equal to the
508 * rate of the immediately previous frame in the frame exchange
509 * sequence ([...]) and that is of the same modulation class
510 * ([...]) as the received frame. If no rate contained in the
511 * BSSBasicRateSet parameter meets these conditions, then the
512 * control frame sent in response to a received frame shall be
513 * transmitted at the highest mandatory rate of the PHY that is
514 * less than or equal to the rate of the received frame, and
515 * that is of the same modulation class as the received frame.
517 * As a consequence, we need to add all mandatory rates that are
518 * lower than all of the basic rates to these bitmaps.
521 if (IWL_RATE_24M_INDEX
< lowest_present_ofdm
)
522 ofdm
|= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE
;
523 if (IWL_RATE_12M_INDEX
< lowest_present_ofdm
)
524 ofdm
|= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE
;
525 /* 6M already there or needed so always add */
526 ofdm
|= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE
;
529 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
531 * - if no CCK rates are basic, it must be ERP since there must
532 * be some basic rates at all, so they're OFDM => ERP PHY
533 * (or we're in 5 GHz, and the cck bitmap will never be used)
534 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
535 * - if 5.5M is basic, 1M and 2M are mandatory
536 * - if 2M is basic, 1M is mandatory
537 * - if 1M is basic, that's the only valid ACK rate.
538 * As a consequence, it's not as complicated as it sounds, just add
539 * any lower rates to the ACK rate bitmap.
541 if (IWL_RATE_11M_INDEX
< lowest_present_cck
)
542 cck
|= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE
;
543 if (IWL_RATE_5M_INDEX
< lowest_present_cck
)
544 cck
|= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE
;
545 if (IWL_RATE_2M_INDEX
< lowest_present_cck
)
546 cck
|= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE
;
547 /* 1M already there or needed so always add */
548 cck
|= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE
;
554 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm
*mvm
,
555 struct ieee80211_vif
*vif
,
556 struct iwl_mac_ctx_cmd
*cmd
)
558 /* for both sta and ap, ht_operation_mode hold the protection_mode */
559 u8 protection_mode
= vif
->bss_conf
.ht_operation_mode
&
560 IEEE80211_HT_OP_MODE_PROTECTION
;
561 /* The fw does not distinguish between ht and fat */
562 u32 ht_flag
= MAC_PROT_FLG_HT_PROT
| MAC_PROT_FLG_FAT_PROT
;
564 IWL_DEBUG_RATE(mvm
, "protection mode set to %d\n", protection_mode
);
566 * See section 9.23.3.1 of IEEE 80211-2012.
567 * Nongreenfield HT STAs Present is not supported.
569 switch (protection_mode
) {
570 case IEEE80211_HT_OP_MODE_PROTECTION_NONE
:
572 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER
:
573 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
574 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
576 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
577 /* Protect when channel wider than 20MHz */
578 if (vif
->bss_conf
.chandef
.width
> NL80211_CHAN_WIDTH_20
)
579 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
582 IWL_ERR(mvm
, "Illegal protection mode %d\n",
588 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm
*mvm
,
589 struct ieee80211_vif
*vif
,
590 struct iwl_mac_ctx_cmd
*cmd
,
591 const u8
*bssid_override
,
594 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
595 struct ieee80211_chanctx_conf
*chanctx
;
596 bool ht_enabled
= !!(vif
->bss_conf
.ht_operation_mode
&
597 IEEE80211_HT_OP_MODE_PROTECTION
);
598 u8 cck_ack_rates
, ofdm_ack_rates
;
599 const u8
*bssid
= bssid_override
?: vif
->bss_conf
.bssid
;
602 cmd
->id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
604 cmd
->action
= cpu_to_le32(action
);
607 case NL80211_IFTYPE_STATION
:
609 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_STA
);
611 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_BSS_STA
);
613 case NL80211_IFTYPE_AP
:
614 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_GO
);
616 case NL80211_IFTYPE_MONITOR
:
617 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_LISTENER
);
619 case NL80211_IFTYPE_P2P_DEVICE
:
620 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE
);
622 case NL80211_IFTYPE_ADHOC
:
623 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_IBSS
);
629 cmd
->tsf_id
= cpu_to_le32(mvmvif
->tsf_id
);
631 memcpy(cmd
->node_addr
, vif
->addr
, ETH_ALEN
);
634 memcpy(cmd
->bssid_addr
, bssid
, ETH_ALEN
);
636 eth_broadcast_addr(cmd
->bssid_addr
);
639 chanctx
= rcu_dereference(vif
->chanctx_conf
);
640 iwl_mvm_ack_rates(mvm
, vif
, chanctx
? chanctx
->def
.chan
->band
642 &cck_ack_rates
, &ofdm_ack_rates
);
645 cmd
->cck_rates
= cpu_to_le32((u32
)cck_ack_rates
);
646 cmd
->ofdm_rates
= cpu_to_le32((u32
)ofdm_ack_rates
);
648 cmd
->cck_short_preamble
=
649 cpu_to_le32(vif
->bss_conf
.use_short_preamble
?
650 MAC_FLG_SHORT_PREAMBLE
: 0);
652 cpu_to_le32(vif
->bss_conf
.use_short_slot
?
653 MAC_FLG_SHORT_SLOT
: 0);
655 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
);
657 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
658 u8 txf
= iwl_mvm_mac_ac_to_tx_fifo(mvm
, i
);
660 cmd
->ac
[txf
].cw_min
=
661 cpu_to_le16(mvmvif
->queue_params
[i
].cw_min
);
662 cmd
->ac
[txf
].cw_max
=
663 cpu_to_le16(mvmvif
->queue_params
[i
].cw_max
);
664 cmd
->ac
[txf
].edca_txop
=
665 cpu_to_le16(mvmvif
->queue_params
[i
].txop
* 32);
666 cmd
->ac
[txf
].aifsn
= mvmvif
->queue_params
[i
].aifs
;
667 cmd
->ac
[txf
].fifos_mask
= BIT(txf
);
670 if (vif
->bss_conf
.qos
)
671 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA
);
673 if (vif
->bss_conf
.use_cts_prot
)
674 cmd
->protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
676 IWL_DEBUG_RATE(mvm
, "use_cts_prot %d, ht_operation_mode %d\n",
677 vif
->bss_conf
.use_cts_prot
,
678 vif
->bss_conf
.ht_operation_mode
);
679 if (vif
->bss_conf
.chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
)
680 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_TGN
);
682 iwl_mvm_mac_ctxt_set_ht_flags(mvm
, vif
, cmd
);
685 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm
*mvm
,
686 struct iwl_mac_ctx_cmd
*cmd
)
688 int ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
691 IWL_ERR(mvm
, "Failed to send MAC context (action:%d): %d\n",
692 le32_to_cpu(cmd
->action
), ret
);
696 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm
*mvm
,
697 struct ieee80211_vif
*vif
,
698 u32 action
, bool force_assoc_off
,
699 const u8
*bssid_override
)
701 struct iwl_mac_ctx_cmd cmd
= {};
702 struct iwl_mac_data_sta
*ctxt_sta
;
704 WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
);
706 /* Fill the common data for all mac context types */
707 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, bssid_override
, action
);
710 struct ieee80211_p2p_noa_attr
*noa
=
711 &vif
->bss_conf
.p2p_noa_attr
;
713 cmd
.p2p_sta
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
714 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
715 ctxt_sta
= &cmd
.p2p_sta
.sta
;
720 /* We need the dtim_period to set the MAC as associated */
721 if (vif
->bss_conf
.assoc
&& vif
->bss_conf
.dtim_period
&&
726 * The DTIM count counts down, so when it is N that means N
727 * more beacon intervals happen until the DTIM TBTT. Therefore
728 * add this to the current time. If that ends up being in the
729 * future, the firmware will handle it.
731 * Also note that the system_timestamp (which we get here as
732 * "sync_device_ts") and TSF timestamp aren't at exactly the
733 * same offset in the frame -- the TSF is at the first symbol
734 * of the TSF, the system timestamp is at signal acquisition
735 * time. This means there's an offset between them of at most
736 * a few hundred microseconds (24 * 8 bits + PLCP time gives
737 * 384us in the longest case), this is currently not relevant
738 * as the firmware wakes up around 2ms before the TBTT.
740 dtim_offs
= vif
->bss_conf
.sync_dtim_count
*
741 vif
->bss_conf
.beacon_int
;
742 /* convert TU to usecs */
746 cpu_to_le64(vif
->bss_conf
.sync_tsf
+ dtim_offs
);
747 ctxt_sta
->dtim_time
=
748 cpu_to_le32(vif
->bss_conf
.sync_device_ts
+ dtim_offs
);
749 ctxt_sta
->assoc_beacon_arrive_time
=
750 cpu_to_le32(vif
->bss_conf
.sync_device_ts
);
752 IWL_DEBUG_INFO(mvm
, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
753 le64_to_cpu(ctxt_sta
->dtim_tsf
),
754 le32_to_cpu(ctxt_sta
->dtim_time
),
757 ctxt_sta
->is_assoc
= cpu_to_le32(1);
759 ctxt_sta
->is_assoc
= cpu_to_le32(0);
761 /* Allow beacons to pass through as long as we are not
762 * associated, or we do not have dtim period information.
764 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
767 ctxt_sta
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
768 ctxt_sta
->bi_reciprocal
=
769 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
770 ctxt_sta
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
771 vif
->bss_conf
.dtim_period
);
772 ctxt_sta
->dtim_reciprocal
=
773 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
774 vif
->bss_conf
.dtim_period
));
776 ctxt_sta
->listen_interval
= cpu_to_le32(mvm
->hw
->conf
.listen_interval
);
777 ctxt_sta
->assoc_id
= cpu_to_le32(vif
->bss_conf
.aid
);
779 if (vif
->probe_req_reg
&& vif
->bss_conf
.assoc
&& vif
->p2p
)
780 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
782 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
785 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm
*mvm
,
786 struct ieee80211_vif
*vif
,
789 struct iwl_mac_ctx_cmd cmd
= {};
790 u32 tfd_queue_msk
= BIT(mvm
->snif_queue
);
793 WARN_ON(vif
->type
!= NL80211_IFTYPE_MONITOR
);
795 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
797 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROMISC
|
798 MAC_FILTER_IN_CONTROL_AND_MGMT
|
799 MAC_FILTER_IN_BEACON
|
800 MAC_FILTER_IN_PROBE_REQUEST
|
801 MAC_FILTER_IN_CRC32
);
802 ieee80211_hw_set(mvm
->hw
, RX_INCLUDES_FCS
);
804 /* Allocate sniffer station */
805 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->snif_sta
, tfd_queue_msk
,
806 vif
->type
, IWL_STA_GENERAL_PURPOSE
);
810 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
813 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm
*mvm
,
814 struct ieee80211_vif
*vif
,
817 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
818 struct iwl_mac_ctx_cmd cmd
= {};
820 WARN_ON(vif
->type
!= NL80211_IFTYPE_ADHOC
);
822 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
824 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_BEACON
|
825 MAC_FILTER_IN_PROBE_REQUEST
);
827 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
828 cmd
.ibss
.bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
829 cmd
.ibss
.bi_reciprocal
=
830 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
832 /* TODO: Assumes that the beacon id == mac context id */
833 cmd
.ibss
.beacon_template
= cpu_to_le32(mvmvif
->id
);
835 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
838 struct iwl_mvm_go_iterator_data
{
842 static void iwl_mvm_go_iterator(void *_data
, u8
*mac
, struct ieee80211_vif
*vif
)
844 struct iwl_mvm_go_iterator_data
*data
= _data
;
845 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
847 if (vif
->type
== NL80211_IFTYPE_AP
&& vif
->p2p
&&
848 mvmvif
->ap_ibss_active
)
849 data
->go_active
= true;
852 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm
*mvm
,
853 struct ieee80211_vif
*vif
,
856 struct iwl_mac_ctx_cmd cmd
= {};
857 struct iwl_mvm_go_iterator_data data
= {};
859 WARN_ON(vif
->type
!= NL80211_IFTYPE_P2P_DEVICE
);
861 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
863 cmd
.protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
865 /* Override the filter flags to accept only probe requests */
866 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
869 * This flag should be set to true when the P2P Device is
870 * discoverable and there is at least another active P2P GO. Settings
871 * this flag will allow the P2P Device to be discoverable on other
872 * channels in addition to its listen channel.
873 * Note that this flag should not be set in other cases as it opens the
874 * Rx filters on all MAC and increases the number of interrupts.
876 ieee80211_iterate_active_interfaces_atomic(
877 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
878 iwl_mvm_go_iterator
, &data
);
880 cmd
.p2p_dev
.is_disc_extended
= cpu_to_le32(data
.go_active
? 1 : 0);
881 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
884 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm
*mvm
,
885 __le32
*tim_index
, __le32
*tim_size
,
886 u8
*beacon
, u32 frame_size
)
889 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
891 /* The index is relative to frame start but we start looking at the
892 * variable-length part of the beacon. */
893 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
895 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
896 while ((tim_idx
< (frame_size
- 2)) &&
897 (beacon
[tim_idx
] != WLAN_EID_TIM
))
898 tim_idx
+= beacon
[tim_idx
+1] + 2;
900 /* If TIM field was found, set variables */
901 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
902 *tim_index
= cpu_to_le32(tim_idx
);
903 *tim_size
= cpu_to_le32((u32
)beacon
[tim_idx
+ 1]);
905 IWL_WARN(mvm
, "Unable to find TIM Element in beacon\n");
909 static u32
iwl_mvm_find_ie_offset(u8
*beacon
, u8 eid
, u32 frame_size
)
911 struct ieee80211_mgmt
*mgmt
= (void *)beacon
;
914 if (WARN_ON_ONCE(frame_size
<= (mgmt
->u
.beacon
.variable
- beacon
)))
917 frame_size
-= mgmt
->u
.beacon
.variable
- beacon
;
919 ie
= cfg80211_find_ie(eid
, mgmt
->u
.beacon
.variable
, frame_size
);
926 static u8
iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info
*info
,
927 struct ieee80211_vif
*vif
)
931 if (info
->band
== NL80211_BAND_5GHZ
|| vif
->p2p
)
932 rate
= IWL_FIRST_OFDM_RATE
;
934 rate
= IWL_FIRST_CCK_RATE
;
939 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm
*mvm
,
940 struct ieee80211_vif
*vif
,
941 struct sk_buff
*beacon
,
942 struct iwl_tx_cmd
*tx
)
944 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
945 struct ieee80211_tx_info
*info
;
949 info
= IEEE80211_SKB_CB(beacon
);
951 /* Set up TX command fields */
952 tx
->len
= cpu_to_le16((u16
)beacon
->len
);
953 tx
->sta_id
= mvmvif
->bcast_sta
.sta_id
;
954 tx
->life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
955 tx_flags
= TX_CMD_FLG_SEQ_CTL
| TX_CMD_FLG_TSF
;
957 iwl_mvm_bt_coex_tx_prio(mvm
, (void *)beacon
->data
, info
, 0) <<
958 TX_CMD_FLG_BT_PRIO_POS
;
959 tx
->tx_flags
= cpu_to_le32(tx_flags
);
961 if (!fw_has_capa(&mvm
->fw
->ucode_capa
,
962 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION
)) {
963 mvm
->mgmt_last_antenna_idx
=
964 iwl_mvm_next_antenna(mvm
, iwl_mvm_get_valid_tx_ant(mvm
),
965 mvm
->mgmt_last_antenna_idx
);
969 cpu_to_le32(BIT(mvm
->mgmt_last_antenna_idx
) <<
972 rate
= iwl_mvm_mac_ctxt_get_lowest_rate(info
, vif
);
974 tx
->rate_n_flags
|= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate
));
975 if (rate
== IWL_FIRST_CCK_RATE
)
976 tx
->rate_n_flags
|= cpu_to_le32(RATE_MCS_CCK_MSK
);
980 static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm
*mvm
,
981 struct sk_buff
*beacon
,
984 struct iwl_host_cmd cmd
= {
985 .id
= BEACON_TEMPLATE_CMD
,
991 cmd
.dataflags
[0] = 0;
992 cmd
.len
[1] = beacon
->len
;
993 cmd
.data
[1] = beacon
->data
;
994 cmd
.dataflags
[1] = IWL_HCMD_DFL_DUP
;
996 return iwl_mvm_send_cmd(mvm
, &cmd
);
999 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm
*mvm
,
1000 struct ieee80211_vif
*vif
,
1001 struct sk_buff
*beacon
)
1003 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1004 struct iwl_mac_beacon_cmd_v6 beacon_cmd
= {};
1006 iwl_mvm_mac_ctxt_set_tx(mvm
, vif
, beacon
, &beacon_cmd
.tx
);
1008 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
1010 if (vif
->type
== NL80211_IFTYPE_AP
)
1011 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
.tim_idx
,
1012 &beacon_cmd
.tim_size
,
1013 beacon
->data
, beacon
->len
);
1015 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm
, beacon
, &beacon_cmd
,
1016 sizeof(beacon_cmd
));
1019 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm
*mvm
,
1020 struct ieee80211_vif
*vif
,
1021 struct sk_buff
*beacon
)
1023 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1024 struct iwl_mac_beacon_cmd_v7 beacon_cmd
= {};
1026 iwl_mvm_mac_ctxt_set_tx(mvm
, vif
, beacon
, &beacon_cmd
.tx
);
1028 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
1030 if (vif
->type
== NL80211_IFTYPE_AP
)
1031 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
.tim_idx
,
1032 &beacon_cmd
.tim_size
,
1033 beacon
->data
, beacon
->len
);
1035 beacon_cmd
.csa_offset
=
1036 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1037 WLAN_EID_CHANNEL_SWITCH
,
1039 beacon_cmd
.ecsa_offset
=
1040 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1041 WLAN_EID_EXT_CHANSWITCH_ANN
,
1044 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm
, beacon
, &beacon_cmd
,
1045 sizeof(beacon_cmd
));
1048 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm
*mvm
,
1049 struct ieee80211_vif
*vif
,
1050 struct sk_buff
*beacon
)
1052 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1053 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(beacon
);
1054 struct iwl_mac_beacon_cmd beacon_cmd
= {};
1055 u8 rate
= iwl_mvm_mac_ctxt_get_lowest_rate(info
, vif
);
1058 flags
= iwl_mvm_mac80211_idx_to_hwrate(rate
);
1060 if (rate
== IWL_FIRST_CCK_RATE
)
1061 flags
|= IWL_MAC_BEACON_CCK
;
1063 beacon_cmd
.flags
= cpu_to_le16(flags
);
1064 beacon_cmd
.byte_cnt
= cpu_to_le16((u16
)beacon
->len
);
1065 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
1067 if (vif
->type
== NL80211_IFTYPE_AP
)
1068 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
.tim_idx
,
1069 &beacon_cmd
.tim_size
,
1070 beacon
->data
, beacon
->len
);
1072 beacon_cmd
.csa_offset
=
1073 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1074 WLAN_EID_CHANNEL_SWITCH
,
1076 beacon_cmd
.ecsa_offset
=
1077 cpu_to_le32(iwl_mvm_find_ie_offset(beacon
->data
,
1078 WLAN_EID_EXT_CHANSWITCH_ANN
,
1081 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm
, beacon
, &beacon_cmd
,
1082 sizeof(beacon_cmd
));
1085 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm
*mvm
,
1086 struct ieee80211_vif
*vif
,
1087 struct sk_buff
*beacon
)
1089 if (WARN_ON(!beacon
))
1092 if (!fw_has_capa(&mvm
->fw
->ucode_capa
,
1093 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD
))
1094 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm
, vif
, beacon
);
1096 if (fw_has_api(&mvm
->fw
->ucode_capa
,
1097 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE
))
1098 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm
, vif
, beacon
);
1100 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm
, vif
, beacon
);
1103 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1104 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm
*mvm
,
1105 struct ieee80211_vif
*vif
)
1107 struct sk_buff
*beacon
;
1110 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
&&
1111 vif
->type
!= NL80211_IFTYPE_ADHOC
);
1113 beacon
= ieee80211_beacon_get_template(mvm
->hw
, vif
, NULL
);
1117 ret
= iwl_mvm_mac_ctxt_send_beacon(mvm
, vif
, beacon
);
1118 dev_kfree_skb(beacon
);
1122 struct iwl_mvm_mac_ap_iterator_data
{
1123 struct iwl_mvm
*mvm
;
1124 struct ieee80211_vif
*vif
;
1125 u32 beacon_device_ts
;
1129 /* Find the beacon_device_ts and beacon_int for a managed interface */
1130 static void iwl_mvm_mac_ap_iterator(void *_data
, u8
*mac
,
1131 struct ieee80211_vif
*vif
)
1133 struct iwl_mvm_mac_ap_iterator_data
*data
= _data
;
1135 if (vif
->type
!= NL80211_IFTYPE_STATION
|| !vif
->bss_conf
.assoc
)
1138 /* Station client has higher priority over P2P client*/
1139 if (vif
->p2p
&& data
->beacon_device_ts
)
1142 data
->beacon_device_ts
= vif
->bss_conf
.sync_device_ts
;
1143 data
->beacon_int
= vif
->bss_conf
.beacon_int
;
1147 * Fill the specific data for mac context of type AP of P2P GO
1149 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm
*mvm
,
1150 struct ieee80211_vif
*vif
,
1151 struct iwl_mac_ctx_cmd
*cmd
,
1152 struct iwl_mac_data_ap
*ctxt_ap
,
1155 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1156 struct iwl_mvm_mac_ap_iterator_data data
= {
1159 .beacon_device_ts
= 0
1162 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1163 cmd
->ac
[IWL_MVM_TX_FIFO_VO
].fifos_mask
|= BIT(IWL_MVM_TX_FIFO_MCAST
);
1166 * in AP mode, pass probe requests and beacons from other APs
1167 * (needed for ht protection); when there're no any associated
1168 * station don't ask FW to pass beacons to prevent unnecessary
1171 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
1172 if (mvmvif
->ap_assoc_sta_count
|| !mvm
->drop_bcn_ap_mode
) {
1173 cmd
->filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
1174 IWL_DEBUG_HC(mvm
, "Asking FW to pass beacons\n");
1176 IWL_DEBUG_HC(mvm
, "No need to receive beacons\n");
1179 ctxt_ap
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
1180 ctxt_ap
->bi_reciprocal
=
1181 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
1182 ctxt_ap
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
1183 vif
->bss_conf
.dtim_period
);
1184 ctxt_ap
->dtim_reciprocal
=
1185 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
1186 vif
->bss_conf
.dtim_period
));
1188 if (!fw_has_api(&mvm
->fw
->ucode_capa
,
1189 IWL_UCODE_TLV_API_STA_TYPE
))
1190 ctxt_ap
->mcast_qid
= cpu_to_le32(vif
->cab_queue
);
1193 * Only set the beacon time when the MAC is being added, when we
1194 * just modify the MAC then we should keep the time -- the firmware
1195 * can otherwise have a "jumping" TBTT.
1199 * If there is a station/P2P client interface which is
1200 * associated, set the AP's TBTT far enough from the station's
1201 * TBTT. Otherwise, set it to the current system time
1203 ieee80211_iterate_active_interfaces_atomic(
1204 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1205 iwl_mvm_mac_ap_iterator
, &data
);
1207 if (data
.beacon_device_ts
) {
1208 u32 rand
= (prandom_u32() % (64 - 36)) + 36;
1209 mvmvif
->ap_beacon_time
= data
.beacon_device_ts
+
1210 ieee80211_tu_to_usec(data
.beacon_int
* rand
/
1213 mvmvif
->ap_beacon_time
=
1214 iwl_read_prph(mvm
->trans
,
1215 DEVICE_SYSTEM_TIME_REG
);
1219 ctxt_ap
->beacon_time
= cpu_to_le32(mvmvif
->ap_beacon_time
);
1220 ctxt_ap
->beacon_tsf
= 0; /* unused */
1222 /* TODO: Assume that the beacon id == mac context id */
1223 ctxt_ap
->beacon_template
= cpu_to_le32(mvmvif
->id
);
1226 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm
*mvm
,
1227 struct ieee80211_vif
*vif
,
1230 struct iwl_mac_ctx_cmd cmd
= {};
1232 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| vif
->p2p
);
1234 /* Fill the common data for all mac context types */
1235 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1237 /* Fill the data specific for ap mode */
1238 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
, &cmd
.ap
,
1239 action
== FW_CTXT_ACTION_ADD
);
1241 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1244 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm
*mvm
,
1245 struct ieee80211_vif
*vif
,
1248 struct iwl_mac_ctx_cmd cmd
= {};
1249 struct ieee80211_p2p_noa_attr
*noa
= &vif
->bss_conf
.p2p_noa_attr
;
1251 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| !vif
->p2p
);
1253 /* Fill the common data for all mac context types */
1254 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1256 /* Fill the data specific for GO mode */
1257 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
, &cmd
.go
.ap
,
1258 action
== FW_CTXT_ACTION_ADD
);
1260 cmd
.go
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
1261 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
1262 cmd
.go
.opp_ps_enabled
=
1263 cpu_to_le32(!!(noa
->oppps_ctwindow
&
1264 IEEE80211_P2P_OPPPS_ENABLE_BIT
));
1266 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1269 static int iwl_mvm_mac_ctx_send(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1270 u32 action
, bool force_assoc_off
,
1271 const u8
*bssid_override
)
1273 switch (vif
->type
) {
1274 case NL80211_IFTYPE_STATION
:
1275 return iwl_mvm_mac_ctxt_cmd_sta(mvm
, vif
, action
,
1279 case NL80211_IFTYPE_AP
:
1281 return iwl_mvm_mac_ctxt_cmd_ap(mvm
, vif
, action
);
1283 return iwl_mvm_mac_ctxt_cmd_go(mvm
, vif
, action
);
1285 case NL80211_IFTYPE_MONITOR
:
1286 return iwl_mvm_mac_ctxt_cmd_listener(mvm
, vif
, action
);
1287 case NL80211_IFTYPE_P2P_DEVICE
:
1288 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm
, vif
, action
);
1289 case NL80211_IFTYPE_ADHOC
:
1290 return iwl_mvm_mac_ctxt_cmd_ibss(mvm
, vif
, action
);
1298 int iwl_mvm_mac_ctxt_add(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1300 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1303 if (WARN_ONCE(mvmvif
->uploaded
, "Adding active MAC %pM/%d\n",
1304 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1307 ret
= iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_ADD
,
1312 /* will only do anything at resume from D3 time */
1313 iwl_mvm_set_last_nonqos_seq(mvm
, vif
);
1315 mvmvif
->uploaded
= true;
1319 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1320 bool force_assoc_off
, const u8
*bssid_override
)
1322 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1324 if (WARN_ONCE(!mvmvif
->uploaded
, "Changing inactive MAC %pM/%d\n",
1325 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1328 return iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_MODIFY
,
1329 force_assoc_off
, bssid_override
);
1332 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1334 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1335 struct iwl_mac_ctx_cmd cmd
;
1338 if (WARN_ONCE(!mvmvif
->uploaded
, "Removing inactive MAC %pM/%d\n",
1339 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1342 memset(&cmd
, 0, sizeof(cmd
));
1344 cmd
.id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
1346 cmd
.action
= cpu_to_le32(FW_CTXT_ACTION_REMOVE
);
1348 ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
1351 IWL_ERR(mvm
, "Failed to remove MAC context: %d\n", ret
);
1355 mvmvif
->uploaded
= false;
1357 if (vif
->type
== NL80211_IFTYPE_MONITOR
) {
1358 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS
, mvm
->hw
->flags
);
1359 iwl_mvm_dealloc_snif_sta(mvm
);
1365 static void iwl_mvm_csa_count_down(struct iwl_mvm
*mvm
,
1366 struct ieee80211_vif
*csa_vif
, u32 gp2
,
1369 struct iwl_mvm_vif
*mvmvif
=
1370 iwl_mvm_vif_from_mac80211(csa_vif
);
1372 /* Don't start to countdown from a failed beacon */
1373 if (!tx_success
&& !mvmvif
->csa_countdown
)
1376 mvmvif
->csa_countdown
= true;
1378 if (!ieee80211_csa_is_complete(csa_vif
)) {
1379 int c
= ieee80211_csa_update_counter(csa_vif
);
1381 iwl_mvm_mac_ctxt_beacon_changed(mvm
, csa_vif
);
1383 !iwl_mvm_te_scheduled(&mvmvif
->time_event_data
) && gp2
&&
1385 u32 rel_time
= (c
+ 1) *
1386 csa_vif
->bss_conf
.beacon_int
-
1387 IWL_MVM_CHANNEL_SWITCH_TIME_GO
;
1388 u32 apply_time
= gp2
+ rel_time
* 1024;
1390 iwl_mvm_schedule_csa_period(mvm
, csa_vif
,
1391 IWL_MVM_CHANNEL_SWITCH_TIME_GO
-
1392 IWL_MVM_CHANNEL_SWITCH_MARGIN
,
1395 } else if (!iwl_mvm_te_scheduled(&mvmvif
->time_event_data
)) {
1396 /* we don't have CSA NoA scheduled yet, switch now */
1397 ieee80211_csa_finish(csa_vif
);
1398 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);
1402 void iwl_mvm_rx_beacon_notif(struct iwl_mvm
*mvm
,
1403 struct iwl_rx_cmd_buffer
*rxb
)
1405 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1406 struct iwl_extended_beacon_notif
*beacon
= (void *)pkt
->data
;
1407 struct iwl_mvm_tx_resp
*beacon_notify_hdr
;
1408 struct ieee80211_vif
*csa_vif
;
1409 struct ieee80211_vif
*tx_blocked_vif
;
1410 struct agg_tx_status
*agg_status
;
1413 lockdep_assert_held(&mvm
->mutex
);
1415 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1416 mvm
->ap_last_beacon_gp2
= le32_to_cpu(beacon
->gp2
);
1417 mvm
->ibss_manager
= beacon
->ibss_mgr_status
!= 0;
1419 agg_status
= iwl_mvm_get_agg_status(mvm
, beacon_notify_hdr
);
1420 status
= le16_to_cpu(agg_status
->status
) & TX_STATUS_MSK
;
1422 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1423 status
, beacon_notify_hdr
->failure_frame
,
1424 le64_to_cpu(beacon
->tsf
),
1425 mvm
->ap_last_beacon_gp2
,
1426 le32_to_cpu(beacon_notify_hdr
->initial_rate
));
1428 csa_vif
= rcu_dereference_protected(mvm
->csa_vif
,
1429 lockdep_is_held(&mvm
->mutex
));
1430 if (unlikely(csa_vif
&& csa_vif
->csa_active
))
1431 iwl_mvm_csa_count_down(mvm
, csa_vif
, mvm
->ap_last_beacon_gp2
,
1432 (status
== TX_STATUS_SUCCESS
));
1434 tx_blocked_vif
= rcu_dereference_protected(mvm
->csa_tx_blocked_vif
,
1435 lockdep_is_held(&mvm
->mutex
));
1436 if (unlikely(tx_blocked_vif
)) {
1437 struct iwl_mvm_vif
*mvmvif
=
1438 iwl_mvm_vif_from_mac80211(tx_blocked_vif
);
1441 * The channel switch is started and we have blocked the
1442 * stations. If this is the first beacon (the timeout wasn't
1443 * set), set the unblock timeout, otherwise countdown
1445 if (!mvm
->csa_tx_block_bcn_timeout
)
1446 mvm
->csa_tx_block_bcn_timeout
=
1447 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
;
1449 mvm
->csa_tx_block_bcn_timeout
--;
1451 /* Check if the timeout is expired, and unblock tx */
1452 if (mvm
->csa_tx_block_bcn_timeout
== 0) {
1453 iwl_mvm_modify_all_sta_disable_tx(mvm
, mvmvif
, false);
1454 RCU_INIT_POINTER(mvm
->csa_tx_blocked_vif
, NULL
);
1459 static void iwl_mvm_beacon_loss_iterator(void *_data
, u8
*mac
,
1460 struct ieee80211_vif
*vif
)
1462 struct iwl_missed_beacons_notif
*missed_beacons
= _data
;
1463 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1464 struct iwl_mvm
*mvm
= mvmvif
->mvm
;
1465 struct iwl_fw_dbg_trigger_missed_bcon
*bcon_trig
;
1466 struct iwl_fw_dbg_trigger_tlv
*trigger
;
1467 u32 stop_trig_missed_bcon
, stop_trig_missed_bcon_since_rx
;
1468 u32 rx_missed_bcon
, rx_missed_bcon_since_rx
;
1470 if (mvmvif
->id
!= (u16
)le32_to_cpu(missed_beacons
->mac_id
))
1473 rx_missed_bcon
= le32_to_cpu(missed_beacons
->consec_missed_beacons
);
1474 rx_missed_bcon_since_rx
=
1475 le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
);
1477 * TODO: the threshold should be adjusted based on latency conditions,
1478 * and/or in case of a CS flow on one of the other AP vifs.
1480 if (le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
) >
1481 IWL_MVM_MISSED_BEACONS_THRESHOLD
)
1482 ieee80211_beacon_loss(vif
);
1484 if (!iwl_fw_dbg_trigger_enabled(mvm
->fw
,
1485 FW_DBG_TRIGGER_MISSED_BEACONS
))
1488 trigger
= iwl_fw_dbg_get_trigger(mvm
->fw
,
1489 FW_DBG_TRIGGER_MISSED_BEACONS
);
1490 bcon_trig
= (void *)trigger
->data
;
1491 stop_trig_missed_bcon
= le32_to_cpu(bcon_trig
->stop_consec_missed_bcon
);
1492 stop_trig_missed_bcon_since_rx
=
1493 le32_to_cpu(bcon_trig
->stop_consec_missed_bcon_since_rx
);
1495 /* TODO: implement start trigger */
1497 if (!iwl_fw_dbg_trigger_check_stop(&mvm
->fwrt
,
1498 ieee80211_vif_to_wdev(vif
),
1502 if (rx_missed_bcon_since_rx
>= stop_trig_missed_bcon_since_rx
||
1503 rx_missed_bcon
>= stop_trig_missed_bcon
)
1504 iwl_fw_dbg_collect_trig(&mvm
->fwrt
, trigger
, NULL
);
1507 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm
*mvm
,
1508 struct iwl_rx_cmd_buffer
*rxb
)
1510 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1511 struct iwl_missed_beacons_notif
*mb
= (void *)pkt
->data
;
1514 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1515 le32_to_cpu(mb
->mac_id
),
1516 le32_to_cpu(mb
->consec_missed_beacons
),
1517 le32_to_cpu(mb
->consec_missed_beacons_since_last_rx
),
1518 le32_to_cpu(mb
->num_recvd_beacons
),
1519 le32_to_cpu(mb
->num_expected_beacons
));
1521 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1522 IEEE80211_IFACE_ITER_NORMAL
,
1523 iwl_mvm_beacon_loss_iterator
,
1527 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm
*mvm
,
1528 struct iwl_rx_cmd_buffer
*rxb
)
1530 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1531 struct iwl_stored_beacon_notif
*sb
= (void *)pkt
->data
;
1532 struct ieee80211_rx_status rx_status
;
1533 struct sk_buff
*skb
;
1534 u32 size
= le32_to_cpu(sb
->byte_count
);
1539 skb
= alloc_skb(size
, GFP_ATOMIC
);
1541 IWL_ERR(mvm
, "alloc_skb failed\n");
1545 /* update rx_status according to the notification's metadata */
1546 memset(&rx_status
, 0, sizeof(rx_status
));
1547 rx_status
.mactime
= le64_to_cpu(sb
->tsf
);
1548 /* TSF as indicated by the firmware is at INA time */
1549 rx_status
.flag
|= RX_FLAG_MACTIME_PLCP_START
;
1550 rx_status
.device_timestamp
= le32_to_cpu(sb
->system_time
);
1552 (sb
->band
& cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24
)) ?
1553 NL80211_BAND_2GHZ
: NL80211_BAND_5GHZ
;
1555 ieee80211_channel_to_frequency(le16_to_cpu(sb
->channel
),
1559 skb_put_data(skb
, sb
->data
, size
);
1560 memcpy(IEEE80211_SKB_RXCB(skb
), &rx_status
, sizeof(rx_status
));
1562 /* pass it as regular rx to mac80211 */
1563 ieee80211_rx_napi(mvm
->hw
, NULL
, skb
, NULL
);
1566 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm
*mvm
,
1567 struct iwl_rx_cmd_buffer
*rxb
)
1569 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1570 struct iwl_channel_switch_noa_notif
*notif
= (void *)pkt
->data
;
1571 struct ieee80211_vif
*csa_vif
;
1572 struct iwl_mvm_vif
*mvmvif
;
1573 int len
= iwl_rx_packet_payload_len(pkt
);
1576 if (WARN_ON_ONCE(len
< sizeof(*notif
)))
1581 csa_vif
= rcu_dereference(mvm
->csa_vif
);
1582 if (WARN_ON(!csa_vif
|| !csa_vif
->csa_active
))
1585 id_n_color
= le32_to_cpu(notif
->id_and_color
);
1587 mvmvif
= iwl_mvm_vif_from_mac80211(csa_vif
);
1588 if (WARN(FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
) != id_n_color
,
1589 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1590 FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
), id_n_color
))
1593 IWL_DEBUG_INFO(mvm
, "Channel Switch Started Notification\n");
1595 schedule_delayed_work(&mvm
->cs_tx_unblock_dwork
,
1596 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
*
1597 csa_vif
->bss_conf
.beacon_int
));
1599 ieee80211_csa_finish(csa_vif
);
1603 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);