1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
66 #include <linux/etherdevice.h>
67 #include <net/mac80211.h>
72 #include "time-event.h"
74 const u8 iwl_mvm_ac_to_tx_fifo
[] = {
81 struct iwl_mvm_mac_iface_iterator_data
{
83 struct ieee80211_vif
*vif
;
84 unsigned long available_mac_ids
[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER
)];
85 unsigned long available_tsf_ids
[BITS_TO_LONGS(NUM_TSF_IDS
)];
87 enum iwl_tsf_id preferred_tsf
;
91 static void iwl_mvm_mac_tsf_id_iter(void *_data
, u8
*mac
,
92 struct ieee80211_vif
*vif
)
94 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
95 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
98 /* Skip the interface for which we are trying to assign a tsf_id */
103 * The TSF is a hardware/firmware resource, there are 4 and
104 * the driver should assign and free them as needed. However,
105 * there are cases where 2 MACs should share the same TSF ID
106 * for the purpose of clock sync, an optimization to avoid
107 * clock drift causing overlapping TBTTs/DTIMs for a GO and
108 * client in the system.
110 * The firmware will decide according to the MAC type which
111 * will be the master and slave. Clients that need to sync
112 * with a remote station will be the master, and an AP or GO
115 * Depending on the new interface type it can be slaved to
116 * or become the master of an existing interface.
118 switch (data
->vif
->type
) {
119 case NL80211_IFTYPE_STATION
:
121 * The new interface is a client, so if the one we're iterating
122 * is an AP, and the beacon interval of the AP is a multiple or
123 * divisor of the beacon interval of the client, the same TSF
124 * should be used to avoid drift between the new client and
125 * existing AP. The existing AP will get drift updates from the
126 * new client context in this case.
128 if (vif
->type
!= NL80211_IFTYPE_AP
||
129 data
->preferred_tsf
!= NUM_TSF_IDS
||
130 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
133 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
134 vif
->bss_conf
.beacon_int
);
139 if ((data
->vif
->bss_conf
.beacon_int
-
140 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
141 data
->preferred_tsf
= mvmvif
->tsf_id
;
146 case NL80211_IFTYPE_AP
:
148 * The new interface is AP/GO, so if its beacon interval is a
149 * multiple or a divisor of the beacon interval of an existing
150 * interface, it should get drift updates from an existing
151 * client or use the same TSF as an existing GO. There's no
152 * drift between TSFs internally but if they used different
153 * TSFs then a new client MAC could update one of them and
154 * cause drift that way.
156 if ((vif
->type
!= NL80211_IFTYPE_AP
&&
157 vif
->type
!= NL80211_IFTYPE_STATION
) ||
158 data
->preferred_tsf
!= NUM_TSF_IDS
||
159 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
162 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
163 vif
->bss_conf
.beacon_int
);
168 if ((data
->vif
->bss_conf
.beacon_int
-
169 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
170 data
->preferred_tsf
= mvmvif
->tsf_id
;
176 * For all other interface types there's no need to
177 * take drift into account. Either they're exclusive
178 * like IBSS and monitor, or we don't care much about
179 * their TSF (like P2P Device), but we won't be able
180 * to share the TSF resource.
186 * Unless we exited above, we can't share the TSF resource
187 * that the virtual interface we're iterating over is using
188 * with the new one, so clear the available bit and if this
189 * was the preferred one, reset that as well.
191 __clear_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
);
193 if (data
->preferred_tsf
== mvmvif
->tsf_id
)
194 data
->preferred_tsf
= NUM_TSF_IDS
;
198 * Get the mask of the queues used by the vif
200 u32
iwl_mvm_mac_get_queues_mask(struct iwl_mvm
*mvm
,
201 struct ieee80211_vif
*vif
)
205 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
)
206 return BIT(IWL_MVM_OFFCHANNEL_QUEUE
);
208 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
209 qmask
|= BIT(vif
->hw_queue
[ac
]);
211 if (vif
->type
== NL80211_IFTYPE_AP
)
212 qmask
|= BIT(vif
->cab_queue
);
217 static void iwl_mvm_mac_iface_iterator(void *_data
, u8
*mac
,
218 struct ieee80211_vif
*vif
)
220 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
221 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
223 /* Iterator may already find the interface being added -- skip it */
224 if (vif
== data
->vif
) {
225 data
->found_vif
= true;
229 /* Mark the queues used by the vif */
230 data
->used_hw_queues
|= iwl_mvm_mac_get_queues_mask(data
->mvm
, vif
);
232 /* Mark MAC IDs as used by clearing the available bit, and
233 * (below) mark TSFs as used if their existing use is not
234 * compatible with the new interface type.
235 * No locking or atomic bit operations are needed since the
236 * data is on the stack of the caller function.
238 __clear_bit(mvmvif
->id
, data
->available_mac_ids
);
240 /* find a suitable tsf_id */
241 iwl_mvm_mac_tsf_id_iter(_data
, mac
, vif
);
244 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm
*mvm
,
245 struct ieee80211_vif
*vif
)
247 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
248 struct iwl_mvm_mac_iface_iterator_data data
= {
251 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
252 /* no preference yet */
253 .preferred_tsf
= NUM_TSF_IDS
,
256 ieee80211_iterate_active_interfaces_atomic(
257 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
258 iwl_mvm_mac_tsf_id_iter
, &data
);
260 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
261 mvmvif
->tsf_id
= data
.preferred_tsf
;
262 else if (!test_bit(mvmvif
->tsf_id
, data
.available_tsf_ids
))
263 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
267 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm
*mvm
,
268 struct ieee80211_vif
*vif
)
270 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
271 struct iwl_mvm_mac_iface_iterator_data data
= {
274 .available_mac_ids
= { (1 << NUM_MAC_INDEX_DRIVER
) - 1 },
275 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
276 /* no preference yet */
277 .preferred_tsf
= NUM_TSF_IDS
,
279 BIT(IWL_MVM_OFFCHANNEL_QUEUE
) |
280 BIT(mvm
->aux_queue
) |
281 BIT(IWL_MVM_CMD_QUEUE
),
286 unsigned long used_hw_queues
;
289 * Allocate a MAC ID and a TSF for this MAC, along with the queues
290 * and other resources.
294 * Before the iterator, we start with all MAC IDs and TSFs available.
296 * During iteration, all MAC IDs are cleared that are in use by other
297 * virtual interfaces, and all TSF IDs are cleared that can't be used
298 * by this new virtual interface because they're used by an interface
299 * that can't share it with the new one.
300 * At the same time, we check if there's a preferred TSF in the case
301 * that we should share it with another interface.
304 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
306 case NL80211_IFTYPE_ADHOC
:
308 case NL80211_IFTYPE_STATION
:
313 __clear_bit(0, data
.available_mac_ids
);
316 ieee80211_iterate_active_interfaces_atomic(
317 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
318 iwl_mvm_mac_iface_iterator
, &data
);
321 * In the case we're getting here during resume, it's similar to
322 * firmware restart, and with RESUME_ALL the iterator will find
323 * the vif being added already.
324 * We don't want to reassign any IDs in either case since doing
325 * so would probably assign different IDs (as interfaces aren't
326 * necessarily added in the same order), but the old IDs were
327 * preserved anyway, so skip ID assignment for both resume and
333 /* Therefore, in recovery, we can't get here */
334 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)))
337 mvmvif
->id
= find_first_bit(data
.available_mac_ids
,
338 NUM_MAC_INDEX_DRIVER
);
339 if (mvmvif
->id
== NUM_MAC_INDEX_DRIVER
) {
340 IWL_ERR(mvm
, "Failed to init MAC context - no free ID!\n");
345 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
346 mvmvif
->tsf_id
= data
.preferred_tsf
;
348 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
350 if (mvmvif
->tsf_id
== NUM_TSF_IDS
) {
351 IWL_ERR(mvm
, "Failed to init MAC context - no free TSF!\n");
358 INIT_LIST_HEAD(&mvmvif
->time_event_data
.list
);
359 mvmvif
->time_event_data
.id
= TE_MAX
;
361 /* No need to allocate data queues to P2P Device MAC.*/
362 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
) {
363 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
364 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
369 used_hw_queues
= data
.used_hw_queues
;
371 /* Find available queues, and allocate them to the ACs */
372 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
373 u8 queue
= find_first_zero_bit(&used_hw_queues
,
374 mvm
->first_agg_queue
);
376 if (queue
>= mvm
->first_agg_queue
) {
377 IWL_ERR(mvm
, "Failed to allocate queue\n");
382 __set_bit(queue
, &used_hw_queues
);
383 vif
->hw_queue
[ac
] = queue
;
386 /* Allocate the CAB queue for softAP and GO interfaces */
387 if (vif
->type
== NL80211_IFTYPE_AP
) {
388 u8 queue
= find_first_zero_bit(&used_hw_queues
,
389 mvm
->first_agg_queue
);
391 if (queue
>= mvm
->first_agg_queue
) {
392 IWL_ERR(mvm
, "Failed to allocate cab queue\n");
397 vif
->cab_queue
= queue
;
399 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
402 mvmvif
->bcast_sta
.sta_id
= IWL_MVM_STATION_COUNT
;
403 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
405 for (i
= 0; i
< NUM_IWL_MVM_SMPS_REQ
; i
++)
406 mvmvif
->smps_requests
[i
] = IEEE80211_SMPS_AUTOMATIC
;
411 memset(mvmvif
, 0, sizeof(struct iwl_mvm_vif
));
412 memset(vif
->hw_queue
, IEEE80211_INVAL_HW_QUEUE
, sizeof(vif
->hw_queue
));
413 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
417 int iwl_mvm_mac_ctxt_init(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
422 lockdep_assert_held(&mvm
->mutex
);
424 ret
= iwl_mvm_mac_ctxt_allocate_resources(mvm
, vif
);
429 case NL80211_IFTYPE_P2P_DEVICE
:
430 iwl_trans_ac_txq_enable(mvm
->trans
, IWL_MVM_OFFCHANNEL_QUEUE
,
433 case NL80211_IFTYPE_AP
:
434 iwl_trans_ac_txq_enable(mvm
->trans
, vif
->cab_queue
,
435 IWL_MVM_TX_FIFO_MCAST
);
438 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
439 iwl_trans_ac_txq_enable(mvm
->trans
, vif
->hw_queue
[ac
],
440 iwl_mvm_ac_to_tx_fifo
[ac
]);
447 void iwl_mvm_mac_ctxt_release(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
451 lockdep_assert_held(&mvm
->mutex
);
454 case NL80211_IFTYPE_P2P_DEVICE
:
455 iwl_trans_txq_disable(mvm
->trans
, IWL_MVM_OFFCHANNEL_QUEUE
,
458 case NL80211_IFTYPE_AP
:
459 iwl_trans_txq_disable(mvm
->trans
, vif
->cab_queue
, true);
462 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
463 iwl_trans_txq_disable(mvm
->trans
, vif
->hw_queue
[ac
],
468 static void iwl_mvm_ack_rates(struct iwl_mvm
*mvm
,
469 struct ieee80211_vif
*vif
,
470 enum ieee80211_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
641 : IEEE80211_BAND_2GHZ
,
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 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
656 u8 txf
= iwl_mvm_ac_to_tx_fifo
[i
];
658 cmd
->ac
[txf
].cw_min
=
659 cpu_to_le16(mvmvif
->queue_params
[i
].cw_min
);
660 cmd
->ac
[txf
].cw_max
=
661 cpu_to_le16(mvmvif
->queue_params
[i
].cw_max
);
662 cmd
->ac
[txf
].edca_txop
=
663 cpu_to_le16(mvmvif
->queue_params
[i
].txop
* 32);
664 cmd
->ac
[txf
].aifsn
= mvmvif
->queue_params
[i
].aifs
;
665 cmd
->ac
[txf
].fifos_mask
= BIT(txf
);
668 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
669 if (vif
->type
== NL80211_IFTYPE_AP
)
670 cmd
->ac
[IWL_MVM_TX_FIFO_VO
].fifos_mask
|=
671 BIT(IWL_MVM_TX_FIFO_MCAST
);
673 if (vif
->bss_conf
.qos
)
674 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA
);
676 if (vif
->bss_conf
.use_cts_prot
)
677 cmd
->protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
679 IWL_DEBUG_RATE(mvm
, "use_cts_prot %d, ht_operation_mode %d\n",
680 vif
->bss_conf
.use_cts_prot
,
681 vif
->bss_conf
.ht_operation_mode
);
682 if (vif
->bss_conf
.chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
)
683 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_TGN
);
685 iwl_mvm_mac_ctxt_set_ht_flags(mvm
, vif
, cmd
);
687 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
);
690 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm
*mvm
,
691 struct iwl_mac_ctx_cmd
*cmd
)
693 int ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
696 IWL_ERR(mvm
, "Failed to send MAC context (action:%d): %d\n",
697 le32_to_cpu(cmd
->action
), ret
);
701 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm
*mvm
,
702 struct ieee80211_vif
*vif
,
703 u32 action
, bool force_assoc_off
,
704 const u8
*bssid_override
)
706 struct iwl_mac_ctx_cmd cmd
= {};
707 struct iwl_mac_data_sta
*ctxt_sta
;
709 WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
);
711 /* Fill the common data for all mac context types */
712 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, bssid_override
, action
);
715 struct ieee80211_p2p_noa_attr
*noa
=
716 &vif
->bss_conf
.p2p_noa_attr
;
718 cmd
.p2p_sta
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
719 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
720 ctxt_sta
= &cmd
.p2p_sta
.sta
;
725 /* We need the dtim_period to set the MAC as associated */
726 if (vif
->bss_conf
.assoc
&& vif
->bss_conf
.dtim_period
&&
731 * The DTIM count counts down, so when it is N that means N
732 * more beacon intervals happen until the DTIM TBTT. Therefore
733 * add this to the current time. If that ends up being in the
734 * future, the firmware will handle it.
736 * Also note that the system_timestamp (which we get here as
737 * "sync_device_ts") and TSF timestamp aren't at exactly the
738 * same offset in the frame -- the TSF is at the first symbol
739 * of the TSF, the system timestamp is at signal acquisition
740 * time. This means there's an offset between them of at most
741 * a few hundred microseconds (24 * 8 bits + PLCP time gives
742 * 384us in the longest case), this is currently not relevant
743 * as the firmware wakes up around 2ms before the TBTT.
745 dtim_offs
= vif
->bss_conf
.sync_dtim_count
*
746 vif
->bss_conf
.beacon_int
;
747 /* convert TU to usecs */
751 cpu_to_le64(vif
->bss_conf
.sync_tsf
+ dtim_offs
);
752 ctxt_sta
->dtim_time
=
753 cpu_to_le32(vif
->bss_conf
.sync_device_ts
+ dtim_offs
);
755 IWL_DEBUG_INFO(mvm
, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
756 le64_to_cpu(ctxt_sta
->dtim_tsf
),
757 le32_to_cpu(ctxt_sta
->dtim_time
),
760 ctxt_sta
->is_assoc
= cpu_to_le32(1);
762 ctxt_sta
->is_assoc
= cpu_to_le32(0);
764 /* Allow beacons to pass through as long as we are not
765 * associated, or we do not have dtim period information.
767 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
770 ctxt_sta
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
771 ctxt_sta
->bi_reciprocal
=
772 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
773 ctxt_sta
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
774 vif
->bss_conf
.dtim_period
);
775 ctxt_sta
->dtim_reciprocal
=
776 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
777 vif
->bss_conf
.dtim_period
));
779 ctxt_sta
->listen_interval
= cpu_to_le32(mvm
->hw
->conf
.listen_interval
);
780 ctxt_sta
->assoc_id
= cpu_to_le32(vif
->bss_conf
.aid
);
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
= {};
791 WARN_ON(vif
->type
!= NL80211_IFTYPE_MONITOR
);
793 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
795 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROMISC
|
796 MAC_FILTER_IN_CONTROL_AND_MGMT
|
797 MAC_FILTER_IN_BEACON
|
798 MAC_FILTER_IN_PROBE_REQUEST
|
799 MAC_FILTER_IN_CRC32
);
800 mvm
->hw
->flags
|= IEEE80211_HW_RX_INCLUDES_FCS
;
802 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
805 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm
*mvm
,
806 struct ieee80211_vif
*vif
,
809 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
810 struct iwl_mac_ctx_cmd cmd
= {};
812 WARN_ON(vif
->type
!= NL80211_IFTYPE_ADHOC
);
814 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
816 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_BEACON
|
817 MAC_FILTER_IN_PROBE_REQUEST
);
819 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
820 cmd
.ibss
.bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
821 cmd
.ibss
.bi_reciprocal
=
822 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
824 /* TODO: Assumes that the beacon id == mac context id */
825 cmd
.ibss
.beacon_template
= cpu_to_le32(mvmvif
->id
);
827 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
830 struct iwl_mvm_go_iterator_data
{
834 static void iwl_mvm_go_iterator(void *_data
, u8
*mac
, struct ieee80211_vif
*vif
)
836 struct iwl_mvm_go_iterator_data
*data
= _data
;
837 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
839 if (vif
->type
== NL80211_IFTYPE_AP
&& vif
->p2p
&&
840 mvmvif
->ap_ibss_active
)
841 data
->go_active
= true;
844 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm
*mvm
,
845 struct ieee80211_vif
*vif
,
848 struct iwl_mac_ctx_cmd cmd
= {};
849 struct iwl_mvm_go_iterator_data data
= {};
851 WARN_ON(vif
->type
!= NL80211_IFTYPE_P2P_DEVICE
);
853 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
855 cmd
.protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
857 /* Override the filter flags to accept only probe requests */
858 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
861 * This flag should be set to true when the P2P Device is
862 * discoverable and there is at least another active P2P GO. Settings
863 * this flag will allow the P2P Device to be discoverable on other
864 * channels in addition to its listen channel.
865 * Note that this flag should not be set in other cases as it opens the
866 * Rx filters on all MAC and increases the number of interrupts.
868 ieee80211_iterate_active_interfaces_atomic(
869 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
870 iwl_mvm_go_iterator
, &data
);
872 cmd
.p2p_dev
.is_disc_extended
= cpu_to_le32(data
.go_active
? 1 : 0);
873 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
876 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm
*mvm
,
877 struct iwl_mac_beacon_cmd
*beacon_cmd
,
878 u8
*beacon
, u32 frame_size
)
881 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
883 /* The index is relative to frame start but we start looking at the
884 * variable-length part of the beacon. */
885 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
887 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
888 while ((tim_idx
< (frame_size
- 2)) &&
889 (beacon
[tim_idx
] != WLAN_EID_TIM
))
890 tim_idx
+= beacon
[tim_idx
+1] + 2;
892 /* If TIM field was found, set variables */
893 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
894 beacon_cmd
->tim_idx
= cpu_to_le32(tim_idx
);
895 beacon_cmd
->tim_size
= cpu_to_le32((u32
)beacon
[tim_idx
+1]);
897 IWL_WARN(mvm
, "Unable to find TIM Element in beacon\n");
901 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm
*mvm
,
902 struct ieee80211_vif
*vif
,
903 struct sk_buff
*beacon
)
905 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
906 struct iwl_host_cmd cmd
= {
907 .id
= BEACON_TEMPLATE_CMD
,
910 struct iwl_mac_beacon_cmd beacon_cmd
= {};
911 struct ieee80211_tx_info
*info
;
915 if (WARN_ON(!beacon
))
918 beacon_skb_len
= beacon
->len
;
920 /* TODO: for now the beacon template id is set to be the mac context id.
921 * Might be better to handle it as another resource ... */
922 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
923 info
= IEEE80211_SKB_CB(beacon
);
925 /* Set up TX command fields */
926 beacon_cmd
.tx
.len
= cpu_to_le16((u16
)beacon_skb_len
);
927 beacon_cmd
.tx
.sta_id
= mvmvif
->bcast_sta
.sta_id
;
928 beacon_cmd
.tx
.life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
929 tx_flags
= TX_CMD_FLG_SEQ_CTL
| TX_CMD_FLG_TSF
;
931 iwl_mvm_bt_coex_tx_prio(mvm
, (void *)beacon
->data
, info
, 0) <<
932 TX_CMD_FLG_BT_PRIO_POS
;
933 beacon_cmd
.tx
.tx_flags
= cpu_to_le32(tx_flags
);
935 mvm
->mgmt_last_antenna_idx
=
936 iwl_mvm_next_antenna(mvm
, mvm
->fw
->valid_tx_ant
,
937 mvm
->mgmt_last_antenna_idx
);
939 beacon_cmd
.tx
.rate_n_flags
=
940 cpu_to_le32(BIT(mvm
->mgmt_last_antenna_idx
) <<
943 if (info
->band
== IEEE80211_BAND_5GHZ
|| vif
->p2p
) {
944 rate
= IWL_FIRST_OFDM_RATE
;
946 rate
= IWL_FIRST_CCK_RATE
;
947 beacon_cmd
.tx
.rate_n_flags
|= cpu_to_le32(RATE_MCS_CCK_MSK
);
949 beacon_cmd
.tx
.rate_n_flags
|=
950 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate
));
952 /* Set up TX beacon command fields */
953 if (vif
->type
== NL80211_IFTYPE_AP
)
954 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
,
959 cmd
.len
[0] = sizeof(beacon_cmd
);
960 cmd
.data
[0] = &beacon_cmd
;
961 cmd
.dataflags
[0] = 0;
962 cmd
.len
[1] = beacon_skb_len
;
963 cmd
.data
[1] = beacon
->data
;
964 cmd
.dataflags
[1] = IWL_HCMD_DFL_DUP
;
966 return iwl_mvm_send_cmd(mvm
, &cmd
);
969 /* The beacon template for the AP/GO/IBSS has changed and needs update */
970 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm
*mvm
,
971 struct ieee80211_vif
*vif
)
973 struct sk_buff
*beacon
;
976 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
&&
977 vif
->type
!= NL80211_IFTYPE_ADHOC
);
979 beacon
= ieee80211_beacon_get_template(mvm
->hw
, vif
, NULL
);
983 ret
= iwl_mvm_mac_ctxt_send_beacon(mvm
, vif
, beacon
);
984 dev_kfree_skb(beacon
);
988 struct iwl_mvm_mac_ap_iterator_data
{
990 struct ieee80211_vif
*vif
;
991 u32 beacon_device_ts
;
995 /* Find the beacon_device_ts and beacon_int for a managed interface */
996 static void iwl_mvm_mac_ap_iterator(void *_data
, u8
*mac
,
997 struct ieee80211_vif
*vif
)
999 struct iwl_mvm_mac_ap_iterator_data
*data
= _data
;
1001 if (vif
->type
!= NL80211_IFTYPE_STATION
|| !vif
->bss_conf
.assoc
)
1004 /* Station client has higher priority over P2P client*/
1005 if (vif
->p2p
&& data
->beacon_device_ts
)
1008 data
->beacon_device_ts
= vif
->bss_conf
.sync_device_ts
;
1009 data
->beacon_int
= vif
->bss_conf
.beacon_int
;
1013 * Fill the specific data for mac context of type AP of P2P GO
1015 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm
*mvm
,
1016 struct ieee80211_vif
*vif
,
1017 struct iwl_mac_data_ap
*ctxt_ap
,
1020 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1021 struct iwl_mvm_mac_ap_iterator_data data
= {
1024 .beacon_device_ts
= 0
1027 ctxt_ap
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
1028 ctxt_ap
->bi_reciprocal
=
1029 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
1030 ctxt_ap
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
1031 vif
->bss_conf
.dtim_period
);
1032 ctxt_ap
->dtim_reciprocal
=
1033 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
1034 vif
->bss_conf
.dtim_period
));
1036 ctxt_ap
->mcast_qid
= cpu_to_le32(vif
->cab_queue
);
1039 * Only set the beacon time when the MAC is being added, when we
1040 * just modify the MAC then we should keep the time -- the firmware
1041 * can otherwise have a "jumping" TBTT.
1045 * If there is a station/P2P client interface which is
1046 * associated, set the AP's TBTT far enough from the station's
1047 * TBTT. Otherwise, set it to the current system time
1049 ieee80211_iterate_active_interfaces_atomic(
1050 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1051 iwl_mvm_mac_ap_iterator
, &data
);
1053 if (data
.beacon_device_ts
) {
1054 u32 rand
= (prandom_u32() % (64 - 36)) + 36;
1055 mvmvif
->ap_beacon_time
= data
.beacon_device_ts
+
1056 ieee80211_tu_to_usec(data
.beacon_int
* rand
/
1059 mvmvif
->ap_beacon_time
=
1060 iwl_read_prph(mvm
->trans
,
1061 DEVICE_SYSTEM_TIME_REG
);
1065 ctxt_ap
->beacon_time
= cpu_to_le32(mvmvif
->ap_beacon_time
);
1066 ctxt_ap
->beacon_tsf
= 0; /* unused */
1068 /* TODO: Assume that the beacon id == mac context id */
1069 ctxt_ap
->beacon_template
= cpu_to_le32(mvmvif
->id
);
1072 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm
*mvm
,
1073 struct ieee80211_vif
*vif
,
1076 struct iwl_mac_ctx_cmd cmd
= {};
1078 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| vif
->p2p
);
1080 /* Fill the common data for all mac context types */
1081 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1084 * pass probe requests and beacons from other APs (needed
1085 * for ht protection)
1087 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
|
1088 MAC_FILTER_IN_BEACON
);
1090 /* Fill the data specific for ap mode */
1091 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.ap
,
1092 action
== FW_CTXT_ACTION_ADD
);
1094 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1097 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm
*mvm
,
1098 struct ieee80211_vif
*vif
,
1101 struct iwl_mac_ctx_cmd cmd
= {};
1102 struct ieee80211_p2p_noa_attr
*noa
= &vif
->bss_conf
.p2p_noa_attr
;
1104 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| !vif
->p2p
);
1106 /* Fill the common data for all mac context types */
1107 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, NULL
, action
);
1110 * pass probe requests and beacons from other APs (needed
1111 * for ht protection)
1113 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
|
1114 MAC_FILTER_IN_BEACON
);
1116 /* Fill the data specific for GO mode */
1117 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.go
.ap
,
1118 action
== FW_CTXT_ACTION_ADD
);
1120 cmd
.go
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
1121 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
1122 cmd
.go
.opp_ps_enabled
=
1123 cpu_to_le32(!!(noa
->oppps_ctwindow
&
1124 IEEE80211_P2P_OPPPS_ENABLE_BIT
));
1126 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1129 static int iwl_mvm_mac_ctx_send(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1130 u32 action
, bool force_assoc_off
,
1131 const u8
*bssid_override
)
1133 switch (vif
->type
) {
1134 case NL80211_IFTYPE_STATION
:
1135 return iwl_mvm_mac_ctxt_cmd_sta(mvm
, vif
, action
,
1139 case NL80211_IFTYPE_AP
:
1141 return iwl_mvm_mac_ctxt_cmd_ap(mvm
, vif
, action
);
1143 return iwl_mvm_mac_ctxt_cmd_go(mvm
, vif
, action
);
1145 case NL80211_IFTYPE_MONITOR
:
1146 return iwl_mvm_mac_ctxt_cmd_listener(mvm
, vif
, action
);
1147 case NL80211_IFTYPE_P2P_DEVICE
:
1148 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm
, vif
, action
);
1149 case NL80211_IFTYPE_ADHOC
:
1150 return iwl_mvm_mac_ctxt_cmd_ibss(mvm
, vif
, action
);
1158 int iwl_mvm_mac_ctxt_add(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1160 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1163 if (WARN_ONCE(mvmvif
->uploaded
, "Adding active MAC %pM/%d\n",
1164 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1167 ret
= iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_ADD
,
1172 /* will only do anything at resume from D3 time */
1173 iwl_mvm_set_last_nonqos_seq(mvm
, vif
);
1175 mvmvif
->uploaded
= true;
1179 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1180 bool force_assoc_off
, const u8
*bssid_override
)
1182 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1184 if (WARN_ONCE(!mvmvif
->uploaded
, "Changing inactive MAC %pM/%d\n",
1185 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1188 return iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_MODIFY
,
1189 force_assoc_off
, bssid_override
);
1192 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1194 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1195 struct iwl_mac_ctx_cmd cmd
;
1198 if (WARN_ONCE(!mvmvif
->uploaded
, "Removing inactive MAC %pM/%d\n",
1199 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1202 memset(&cmd
, 0, sizeof(cmd
));
1204 cmd
.id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
1206 cmd
.action
= cpu_to_le32(FW_CTXT_ACTION_REMOVE
);
1208 ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
1211 IWL_ERR(mvm
, "Failed to remove MAC context: %d\n", ret
);
1215 mvmvif
->uploaded
= false;
1217 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1218 mvm
->hw
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
1223 static void iwl_mvm_csa_count_down(struct iwl_mvm
*mvm
,
1224 struct ieee80211_vif
*csa_vif
, u32 gp2
)
1226 struct iwl_mvm_vif
*mvmvif
=
1227 iwl_mvm_vif_from_mac80211(csa_vif
);
1229 if (!ieee80211_csa_is_complete(csa_vif
)) {
1230 int c
= ieee80211_csa_update_counter(csa_vif
);
1232 iwl_mvm_mac_ctxt_beacon_changed(mvm
, csa_vif
);
1234 !iwl_mvm_te_scheduled(&mvmvif
->time_event_data
) && gp2
) {
1235 u32 rel_time
= (c
+ 1) *
1236 csa_vif
->bss_conf
.beacon_int
-
1237 IWL_MVM_CHANNEL_SWITCH_TIME_GO
;
1238 u32 apply_time
= gp2
+ rel_time
* 1024;
1240 iwl_mvm_schedule_csa_period(mvm
, csa_vif
,
1241 IWL_MVM_CHANNEL_SWITCH_TIME_GO
-
1242 IWL_MVM_CHANNEL_SWITCH_MARGIN
,
1245 } else if (!iwl_mvm_te_scheduled(&mvmvif
->time_event_data
)) {
1246 /* we don't have CSA NoA scheduled yet, switch now */
1247 ieee80211_csa_finish(csa_vif
);
1248 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);
1252 int iwl_mvm_rx_beacon_notif(struct iwl_mvm
*mvm
,
1253 struct iwl_rx_cmd_buffer
*rxb
,
1254 struct iwl_device_cmd
*cmd
)
1256 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1257 struct iwl_mvm_tx_resp
*beacon_notify_hdr
;
1258 struct ieee80211_vif
*csa_vif
;
1259 struct ieee80211_vif
*tx_blocked_vif
;
1262 lockdep_assert_held(&mvm
->mutex
);
1264 if (mvm
->fw
->ucode_capa
.api
[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON
) {
1265 struct iwl_extended_beacon_notif
*beacon
= (void *)pkt
->data
;
1267 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1268 tsf
= le64_to_cpu(beacon
->tsf
);
1269 mvm
->ap_last_beacon_gp2
= le32_to_cpu(beacon
->gp2
);
1271 struct iwl_beacon_notif
*beacon
= (void *)pkt
->data
;
1273 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1274 tsf
= le64_to_cpu(beacon
->tsf
);
1278 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1279 le16_to_cpu(beacon_notify_hdr
->status
.status
) &
1281 beacon_notify_hdr
->failure_frame
, tsf
,
1282 mvm
->ap_last_beacon_gp2
,
1283 le32_to_cpu(beacon_notify_hdr
->initial_rate
));
1285 csa_vif
= rcu_dereference_protected(mvm
->csa_vif
,
1286 lockdep_is_held(&mvm
->mutex
));
1287 if (unlikely(csa_vif
&& csa_vif
->csa_active
))
1288 iwl_mvm_csa_count_down(mvm
, csa_vif
, mvm
->ap_last_beacon_gp2
);
1290 tx_blocked_vif
= rcu_dereference_protected(mvm
->csa_tx_blocked_vif
,
1291 lockdep_is_held(&mvm
->mutex
));
1292 if (unlikely(tx_blocked_vif
)) {
1293 struct iwl_mvm_vif
*mvmvif
=
1294 iwl_mvm_vif_from_mac80211(tx_blocked_vif
);
1297 * The channel switch is started and we have blocked the
1298 * stations. If this is the first beacon (the timeout wasn't
1299 * set), set the unblock timeout, otherwise countdown
1301 if (!mvm
->csa_tx_block_bcn_timeout
)
1302 mvm
->csa_tx_block_bcn_timeout
=
1303 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
;
1305 mvm
->csa_tx_block_bcn_timeout
--;
1307 /* Check if the timeout is expired, and unblock tx */
1308 if (mvm
->csa_tx_block_bcn_timeout
== 0) {
1309 iwl_mvm_modify_all_sta_disable_tx(mvm
, mvmvif
, false);
1310 RCU_INIT_POINTER(mvm
->csa_tx_blocked_vif
, NULL
);
1317 static void iwl_mvm_beacon_loss_iterator(void *_data
, u8
*mac
,
1318 struct ieee80211_vif
*vif
)
1320 struct iwl_missed_beacons_notif
*missed_beacons
= _data
;
1321 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1323 if (mvmvif
->id
!= (u16
)le32_to_cpu(missed_beacons
->mac_id
))
1327 * TODO: the threshold should be adjusted based on latency conditions,
1328 * and/or in case of a CS flow on one of the other AP vifs.
1330 if (le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
) >
1331 IWL_MVM_MISSED_BEACONS_THRESHOLD
)
1332 ieee80211_beacon_loss(vif
);
1335 int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm
*mvm
,
1336 struct iwl_rx_cmd_buffer
*rxb
,
1337 struct iwl_device_cmd
*cmd
)
1339 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1340 struct iwl_missed_beacons_notif
*mb
= (void *)pkt
->data
;
1343 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1344 le32_to_cpu(mb
->mac_id
),
1345 le32_to_cpu(mb
->consec_missed_beacons
),
1346 le32_to_cpu(mb
->consec_missed_beacons_since_last_rx
),
1347 le32_to_cpu(mb
->num_recvd_beacons
),
1348 le32_to_cpu(mb
->num_expected_beacons
));
1350 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1351 IEEE80211_IFACE_ITER_NORMAL
,
1352 iwl_mvm_beacon_loss_iterator
,