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.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
64 #include <linux/etherdevice.h>
65 #include <net/mac80211.h>
70 #include "time-event.h"
72 const u8 iwl_mvm_ac_to_tx_fifo
[] = {
79 struct iwl_mvm_mac_iface_iterator_data
{
81 struct ieee80211_vif
*vif
;
82 unsigned long available_mac_ids
[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER
)];
83 unsigned long available_tsf_ids
[BITS_TO_LONGS(NUM_TSF_IDS
)];
84 unsigned long used_hw_queues
[BITS_TO_LONGS(IWL_MVM_MAX_QUEUES
)];
85 enum iwl_tsf_id preferred_tsf
;
89 static void iwl_mvm_mac_tsf_id_iter(void *_data
, u8
*mac
,
90 struct ieee80211_vif
*vif
)
92 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
93 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
96 /* Skip the interface for which we are trying to assign a tsf_id */
101 * The TSF is a hardware/firmware resource, there are 4 and
102 * the driver should assign and free them as needed. However,
103 * there are cases where 2 MACs should share the same TSF ID
104 * for the purpose of clock sync, an optimization to avoid
105 * clock drift causing overlapping TBTTs/DTIMs for a GO and
106 * client in the system.
108 * The firmware will decide according to the MAC type which
109 * will be the master and slave. Clients that need to sync
110 * with a remote station will be the master, and an AP or GO
113 * Depending on the new interface type it can be slaved to
114 * or become the master of an existing interface.
116 switch (data
->vif
->type
) {
117 case NL80211_IFTYPE_STATION
:
119 * The new interface is a client, so if the one we're iterating
120 * is an AP, and the beacon interval of the AP is a multiple or
121 * divisor of the beacon interval of the client, the same TSF
122 * should be used to avoid drift between the new client and
123 * existing AP. The existing AP will get drift updates from the
124 * new client context in this case.
126 if (vif
->type
!= NL80211_IFTYPE_AP
||
127 data
->preferred_tsf
!= NUM_TSF_IDS
||
128 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
131 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
132 vif
->bss_conf
.beacon_int
);
137 if ((data
->vif
->bss_conf
.beacon_int
-
138 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
139 data
->preferred_tsf
= mvmvif
->tsf_id
;
144 case NL80211_IFTYPE_AP
:
146 * The new interface is AP/GO, so if its beacon interval is a
147 * multiple or a divisor of the beacon interval of an existing
148 * interface, it should get drift updates from an existing
149 * client or use the same TSF as an existing GO. There's no
150 * drift between TSFs internally but if they used different
151 * TSFs then a new client MAC could update one of them and
152 * cause drift that way.
154 if ((vif
->type
!= NL80211_IFTYPE_AP
&&
155 vif
->type
!= NL80211_IFTYPE_STATION
) ||
156 data
->preferred_tsf
!= NUM_TSF_IDS
||
157 !test_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
))
160 min_bi
= min(data
->vif
->bss_conf
.beacon_int
,
161 vif
->bss_conf
.beacon_int
);
166 if ((data
->vif
->bss_conf
.beacon_int
-
167 vif
->bss_conf
.beacon_int
) % min_bi
== 0) {
168 data
->preferred_tsf
= mvmvif
->tsf_id
;
174 * For all other interface types there's no need to
175 * take drift into account. Either they're exclusive
176 * like IBSS and monitor, or we don't care much about
177 * their TSF (like P2P Device), but we won't be able
178 * to share the TSF resource.
184 * Unless we exited above, we can't share the TSF resource
185 * that the virtual interface we're iterating over is using
186 * with the new one, so clear the available bit and if this
187 * was the preferred one, reset that as well.
189 __clear_bit(mvmvif
->tsf_id
, data
->available_tsf_ids
);
191 if (data
->preferred_tsf
== mvmvif
->tsf_id
)
192 data
->preferred_tsf
= NUM_TSF_IDS
;
195 static void iwl_mvm_mac_iface_iterator(void *_data
, u8
*mac
,
196 struct ieee80211_vif
*vif
)
198 struct iwl_mvm_mac_iface_iterator_data
*data
= _data
;
199 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
202 /* Iterator may already find the interface being added -- skip it */
203 if (vif
== data
->vif
) {
204 data
->found_vif
= true;
208 /* Mark the queues used by the vif */
209 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
210 if (vif
->hw_queue
[ac
] != IEEE80211_INVAL_HW_QUEUE
)
211 __set_bit(vif
->hw_queue
[ac
], data
->used_hw_queues
);
213 if (vif
->cab_queue
!= IEEE80211_INVAL_HW_QUEUE
)
214 __set_bit(vif
->cab_queue
, data
->used_hw_queues
);
216 /* Mark MAC IDs as used by clearing the available bit, and
217 * (below) mark TSFs as used if their existing use is not
218 * compatible with the new interface type.
219 * No locking or atomic bit operations are needed since the
220 * data is on the stack of the caller function.
222 __clear_bit(mvmvif
->id
, data
->available_mac_ids
);
224 /* find a suitable tsf_id */
225 iwl_mvm_mac_tsf_id_iter(_data
, mac
, vif
);
229 * Get the mask of the queus used by the vif
231 u32
iwl_mvm_mac_get_queues_mask(struct iwl_mvm
*mvm
,
232 struct ieee80211_vif
*vif
)
236 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
)
237 return BIT(IWL_MVM_OFFCHANNEL_QUEUE
);
239 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
240 if (vif
->hw_queue
[ac
] != IEEE80211_INVAL_HW_QUEUE
)
241 qmask
|= BIT(vif
->hw_queue
[ac
]);
246 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm
*mvm
,
247 struct ieee80211_vif
*vif
)
249 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
250 struct iwl_mvm_mac_iface_iterator_data data
= {
253 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
254 /* no preference yet */
255 .preferred_tsf
= NUM_TSF_IDS
,
258 ieee80211_iterate_active_interfaces_atomic(
259 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
260 iwl_mvm_mac_tsf_id_iter
, &data
);
262 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
263 mvmvif
->tsf_id
= data
.preferred_tsf
;
264 else if (!test_bit(mvmvif
->tsf_id
, data
.available_tsf_ids
))
265 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
269 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm
*mvm
,
270 struct ieee80211_vif
*vif
)
272 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
273 struct iwl_mvm_mac_iface_iterator_data data
= {
276 .available_mac_ids
= { (1 << NUM_MAC_INDEX_DRIVER
) - 1 },
277 .available_tsf_ids
= { (1 << NUM_TSF_IDS
) - 1 },
278 /* no preference yet */
279 .preferred_tsf
= NUM_TSF_IDS
,
281 BIT(IWL_MVM_OFFCHANNEL_QUEUE
) |
282 BIT(mvm
->aux_queue
) |
283 BIT(IWL_MVM_CMD_QUEUE
)
291 * Allocate a MAC ID and a TSF for this MAC, along with the queues
292 * and other resources.
296 * Before the iterator, we start with all MAC IDs and TSFs available.
298 * During iteration, all MAC IDs are cleared that are in use by other
299 * virtual interfaces, and all TSF IDs are cleared that can't be used
300 * by this new virtual interface because they're used by an interface
301 * that can't share it with the new one.
302 * At the same time, we check if there's a preferred TSF in the case
303 * that we should share it with another interface.
306 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
308 case NL80211_IFTYPE_ADHOC
:
310 case NL80211_IFTYPE_STATION
:
315 __clear_bit(0, data
.available_mac_ids
);
318 ieee80211_iterate_active_interfaces_atomic(
319 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
320 iwl_mvm_mac_iface_iterator
, &data
);
323 * In the case we're getting here during resume, it's similar to
324 * firmware restart, and with RESUME_ALL the iterator will find
325 * the vif being added already.
326 * We don't want to reassign any IDs in either case since doing
327 * so would probably assign different IDs (as interfaces aren't
328 * necessarily added in the same order), but the old IDs were
329 * preserved anyway, so skip ID assignment for both resume and
335 /* Therefore, in recovery, we can't get here */
336 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)))
339 mvmvif
->id
= find_first_bit(data
.available_mac_ids
,
340 NUM_MAC_INDEX_DRIVER
);
341 if (mvmvif
->id
== NUM_MAC_INDEX_DRIVER
) {
342 IWL_ERR(mvm
, "Failed to init MAC context - no free ID!\n");
347 if (data
.preferred_tsf
!= NUM_TSF_IDS
)
348 mvmvif
->tsf_id
= data
.preferred_tsf
;
350 mvmvif
->tsf_id
= find_first_bit(data
.available_tsf_ids
,
352 if (mvmvif
->tsf_id
== NUM_TSF_IDS
) {
353 IWL_ERR(mvm
, "Failed to init MAC context - no free TSF!\n");
360 INIT_LIST_HEAD(&mvmvif
->time_event_data
.list
);
361 mvmvif
->time_event_data
.id
= TE_MAX
;
363 /* No need to allocate data queues to P2P Device MAC.*/
364 if (vif
->type
== NL80211_IFTYPE_P2P_DEVICE
) {
365 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
366 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
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(data
.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
, data
.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(data
.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
);
457 case NL80211_IFTYPE_AP
:
458 iwl_trans_txq_disable(mvm
->trans
, vif
->cab_queue
);
461 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
462 iwl_trans_txq_disable(mvm
->trans
, vif
->hw_queue
[ac
]);
466 static void iwl_mvm_ack_rates(struct iwl_mvm
*mvm
,
467 struct ieee80211_vif
*vif
,
468 enum ieee80211_band band
,
469 u8
*cck_rates
, u8
*ofdm_rates
)
471 struct ieee80211_supported_band
*sband
;
472 unsigned long basic
= vif
->bss_conf
.basic_rates
;
473 int lowest_present_ofdm
= 100;
474 int lowest_present_cck
= 100;
479 sband
= mvm
->hw
->wiphy
->bands
[band
];
481 for_each_set_bit(i
, &basic
, BITS_PER_LONG
) {
482 int hw
= sband
->bitrates
[i
].hw_value
;
483 if (hw
>= IWL_FIRST_OFDM_RATE
) {
484 ofdm
|= BIT(hw
- IWL_FIRST_OFDM_RATE
);
485 if (lowest_present_ofdm
> hw
)
486 lowest_present_ofdm
= hw
;
488 BUILD_BUG_ON(IWL_FIRST_CCK_RATE
!= 0);
491 if (lowest_present_cck
> hw
)
492 lowest_present_cck
= hw
;
497 * Now we've got the basic rates as bitmaps in the ofdm and cck
498 * variables. This isn't sufficient though, as there might not
499 * be all the right rates in the bitmap. E.g. if the only basic
500 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
501 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
503 * [...] a STA responding to a received frame shall transmit
504 * its Control Response frame [...] at the highest rate in the
505 * BSSBasicRateSet parameter that is less than or equal to the
506 * rate of the immediately previous frame in the frame exchange
507 * sequence ([...]) and that is of the same modulation class
508 * ([...]) as the received frame. If no rate contained in the
509 * BSSBasicRateSet parameter meets these conditions, then the
510 * control frame sent in response to a received frame shall be
511 * transmitted at the highest mandatory rate of the PHY that is
512 * less than or equal to the rate of the received frame, and
513 * that is of the same modulation class as the received frame.
515 * As a consequence, we need to add all mandatory rates that are
516 * lower than all of the basic rates to these bitmaps.
519 if (IWL_RATE_24M_INDEX
< lowest_present_ofdm
)
520 ofdm
|= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE
;
521 if (IWL_RATE_12M_INDEX
< lowest_present_ofdm
)
522 ofdm
|= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE
;
523 /* 6M already there or needed so always add */
524 ofdm
|= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE
;
527 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
529 * - if no CCK rates are basic, it must be ERP since there must
530 * be some basic rates at all, so they're OFDM => ERP PHY
531 * (or we're in 5 GHz, and the cck bitmap will never be used)
532 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
533 * - if 5.5M is basic, 1M and 2M are mandatory
534 * - if 2M is basic, 1M is mandatory
535 * - if 1M is basic, that's the only valid ACK rate.
536 * As a consequence, it's not as complicated as it sounds, just add
537 * any lower rates to the ACK rate bitmap.
539 if (IWL_RATE_11M_INDEX
< lowest_present_cck
)
540 cck
|= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE
;
541 if (IWL_RATE_5M_INDEX
< lowest_present_cck
)
542 cck
|= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE
;
543 if (IWL_RATE_2M_INDEX
< lowest_present_cck
)
544 cck
|= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE
;
545 /* 1M already there or needed so always add */
546 cck
|= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE
;
552 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm
*mvm
,
553 struct ieee80211_vif
*vif
,
554 struct iwl_mac_ctx_cmd
*cmd
)
556 /* for both sta and ap, ht_operation_mode hold the protection_mode */
557 u8 protection_mode
= vif
->bss_conf
.ht_operation_mode
&
558 IEEE80211_HT_OP_MODE_PROTECTION
;
559 /* The fw does not distinguish between ht and fat */
560 u32 ht_flag
= MAC_PROT_FLG_HT_PROT
| MAC_PROT_FLG_FAT_PROT
;
562 IWL_DEBUG_RATE(mvm
, "protection mode set to %d\n", protection_mode
);
564 * See section 9.23.3.1 of IEEE 80211-2012.
565 * Nongreenfield HT STAs Present is not supported.
567 switch (protection_mode
) {
568 case IEEE80211_HT_OP_MODE_PROTECTION_NONE
:
570 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER
:
571 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
572 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
574 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
575 /* Protect when channel wider than 20MHz */
576 if (vif
->bss_conf
.chandef
.width
> NL80211_CHAN_WIDTH_20
)
577 cmd
->protection_flags
|= cpu_to_le32(ht_flag
);
580 IWL_ERR(mvm
, "Illegal protection mode %d\n",
586 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm
*mvm
,
587 struct ieee80211_vif
*vif
,
588 struct iwl_mac_ctx_cmd
*cmd
,
591 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
592 struct ieee80211_chanctx_conf
*chanctx
;
593 bool ht_enabled
= !!(vif
->bss_conf
.ht_operation_mode
&
594 IEEE80211_HT_OP_MODE_PROTECTION
);
595 u8 cck_ack_rates
, ofdm_ack_rates
;
598 cmd
->id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
600 cmd
->action
= cpu_to_le32(action
);
603 case NL80211_IFTYPE_STATION
:
605 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_STA
);
607 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_BSS_STA
);
609 case NL80211_IFTYPE_AP
:
610 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_GO
);
612 case NL80211_IFTYPE_MONITOR
:
613 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_LISTENER
);
615 case NL80211_IFTYPE_P2P_DEVICE
:
616 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE
);
618 case NL80211_IFTYPE_ADHOC
:
619 cmd
->mac_type
= cpu_to_le32(FW_MAC_TYPE_IBSS
);
625 cmd
->tsf_id
= cpu_to_le32(mvmvif
->tsf_id
);
627 memcpy(cmd
->node_addr
, vif
->addr
, ETH_ALEN
);
628 if (vif
->bss_conf
.bssid
)
629 memcpy(cmd
->bssid_addr
, vif
->bss_conf
.bssid
, ETH_ALEN
);
631 eth_broadcast_addr(cmd
->bssid_addr
);
634 chanctx
= rcu_dereference(vif
->chanctx_conf
);
635 iwl_mvm_ack_rates(mvm
, vif
, chanctx
? chanctx
->def
.chan
->band
636 : IEEE80211_BAND_2GHZ
,
637 &cck_ack_rates
, &ofdm_ack_rates
);
640 cmd
->cck_rates
= cpu_to_le32((u32
)cck_ack_rates
);
641 cmd
->ofdm_rates
= cpu_to_le32((u32
)ofdm_ack_rates
);
643 cmd
->cck_short_preamble
=
644 cpu_to_le32(vif
->bss_conf
.use_short_preamble
?
645 MAC_FLG_SHORT_PREAMBLE
: 0);
647 cpu_to_le32(vif
->bss_conf
.use_short_slot
?
648 MAC_FLG_SHORT_SLOT
: 0);
650 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
651 u8 txf
= iwl_mvm_ac_to_tx_fifo
[i
];
653 cmd
->ac
[txf
].cw_min
=
654 cpu_to_le16(mvmvif
->queue_params
[i
].cw_min
);
655 cmd
->ac
[txf
].cw_max
=
656 cpu_to_le16(mvmvif
->queue_params
[i
].cw_max
);
657 cmd
->ac
[txf
].edca_txop
=
658 cpu_to_le16(mvmvif
->queue_params
[i
].txop
* 32);
659 cmd
->ac
[txf
].aifsn
= mvmvif
->queue_params
[i
].aifs
;
660 cmd
->ac
[txf
].fifos_mask
= BIT(txf
);
663 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
664 if (vif
->type
== NL80211_IFTYPE_AP
)
665 cmd
->ac
[IWL_MVM_TX_FIFO_VO
].fifos_mask
|=
666 BIT(IWL_MVM_TX_FIFO_MCAST
);
668 if (vif
->bss_conf
.qos
)
669 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA
);
671 if (vif
->bss_conf
.use_cts_prot
)
672 cmd
->protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
674 IWL_DEBUG_RATE(mvm
, "use_cts_prot %d, ht_operation_mode %d\n",
675 vif
->bss_conf
.use_cts_prot
,
676 vif
->bss_conf
.ht_operation_mode
);
677 if (vif
->bss_conf
.chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
)
678 cmd
->qos_flags
|= cpu_to_le32(MAC_QOS_FLG_TGN
);
680 iwl_mvm_mac_ctxt_set_ht_flags(mvm
, vif
, cmd
);
682 cmd
->filter_flags
= cpu_to_le32(MAC_FILTER_ACCEPT_GRP
);
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
)
700 struct iwl_mac_ctx_cmd cmd
= {};
701 struct iwl_mac_data_sta
*ctxt_sta
;
703 WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
);
705 /* Fill the common data for all mac context types */
706 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
709 struct ieee80211_p2p_noa_attr
*noa
=
710 &vif
->bss_conf
.p2p_noa_attr
;
712 cmd
.p2p_sta
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
713 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
714 ctxt_sta
= &cmd
.p2p_sta
.sta
;
719 /* We need the dtim_period to set the MAC as associated */
720 if (vif
->bss_conf
.assoc
&& vif
->bss_conf
.dtim_period
&&
725 * The DTIM count counts down, so when it is N that means N
726 * more beacon intervals happen until the DTIM TBTT. Therefore
727 * add this to the current time. If that ends up being in the
728 * future, the firmware will handle it.
730 * Also note that the system_timestamp (which we get here as
731 * "sync_device_ts") and TSF timestamp aren't at exactly the
732 * same offset in the frame -- the TSF is at the first symbol
733 * of the TSF, the system timestamp is at signal acquisition
734 * time. This means there's an offset between them of at most
735 * a few hundred microseconds (24 * 8 bits + PLCP time gives
736 * 384us in the longest case), this is currently not relevant
737 * as the firmware wakes up around 2ms before the TBTT.
739 dtim_offs
= vif
->bss_conf
.sync_dtim_count
*
740 vif
->bss_conf
.beacon_int
;
741 /* convert TU to usecs */
745 cpu_to_le64(vif
->bss_conf
.sync_tsf
+ dtim_offs
);
746 ctxt_sta
->dtim_time
=
747 cpu_to_le32(vif
->bss_conf
.sync_device_ts
+ dtim_offs
);
749 IWL_DEBUG_INFO(mvm
, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
750 le64_to_cpu(ctxt_sta
->dtim_tsf
),
751 le32_to_cpu(ctxt_sta
->dtim_time
),
754 ctxt_sta
->is_assoc
= cpu_to_le32(1);
756 ctxt_sta
->is_assoc
= cpu_to_le32(0);
758 /* Allow beacons to pass through as long as we are not
759 * associated, or we do not have dtim period information.
761 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_BEACON
);
764 ctxt_sta
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
765 ctxt_sta
->bi_reciprocal
=
766 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
767 ctxt_sta
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
768 vif
->bss_conf
.dtim_period
);
769 ctxt_sta
->dtim_reciprocal
=
770 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
771 vif
->bss_conf
.dtim_period
));
773 ctxt_sta
->listen_interval
= cpu_to_le32(mvm
->hw
->conf
.listen_interval
);
774 ctxt_sta
->assoc_id
= cpu_to_le32(vif
->bss_conf
.aid
);
776 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
779 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm
*mvm
,
780 struct ieee80211_vif
*vif
,
783 struct iwl_mac_ctx_cmd cmd
= {};
785 WARN_ON(vif
->type
!= NL80211_IFTYPE_MONITOR
);
787 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
789 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROMISC
|
790 MAC_FILTER_IN_CONTROL_AND_MGMT
|
791 MAC_FILTER_IN_BEACON
|
792 MAC_FILTER_IN_PROBE_REQUEST
|
793 MAC_FILTER_IN_CRC32
);
794 mvm
->hw
->flags
|= IEEE80211_HW_RX_INCLUDES_FCS
;
796 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
799 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm
*mvm
,
800 struct ieee80211_vif
*vif
,
803 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
804 struct iwl_mac_ctx_cmd cmd
= {};
806 WARN_ON(vif
->type
!= NL80211_IFTYPE_ADHOC
);
808 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
810 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_BEACON
|
811 MAC_FILTER_IN_PROBE_REQUEST
);
813 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
814 cmd
.ibss
.bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
815 cmd
.ibss
.bi_reciprocal
=
816 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
818 /* TODO: Assumes that the beacon id == mac context id */
819 cmd
.ibss
.beacon_template
= cpu_to_le32(mvmvif
->id
);
821 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
824 struct iwl_mvm_go_iterator_data
{
828 static void iwl_mvm_go_iterator(void *_data
, u8
*mac
, struct ieee80211_vif
*vif
)
830 struct iwl_mvm_go_iterator_data
*data
= _data
;
831 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
833 if (vif
->type
== NL80211_IFTYPE_AP
&& vif
->p2p
&&
834 mvmvif
->ap_ibss_active
)
835 data
->go_active
= true;
838 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm
*mvm
,
839 struct ieee80211_vif
*vif
,
842 struct iwl_mac_ctx_cmd cmd
= {};
843 struct iwl_mvm_go_iterator_data data
= {};
845 WARN_ON(vif
->type
!= NL80211_IFTYPE_P2P_DEVICE
);
847 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
849 cmd
.protection_flags
|= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT
);
851 /* Override the filter flags to accept only probe requests */
852 cmd
.filter_flags
= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
);
855 * This flag should be set to true when the P2P Device is
856 * discoverable and there is at least another active P2P GO. Settings
857 * this flag will allow the P2P Device to be discoverable on other
858 * channels in addition to its listen channel.
859 * Note that this flag should not be set in other cases as it opens the
860 * Rx filters on all MAC and increases the number of interrupts.
862 ieee80211_iterate_active_interfaces_atomic(
863 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
864 iwl_mvm_go_iterator
, &data
);
866 cmd
.p2p_dev
.is_disc_extended
= cpu_to_le32(data
.go_active
? 1 : 0);
867 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
870 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm
*mvm
,
871 struct iwl_mac_beacon_cmd
*beacon_cmd
,
872 u8
*beacon
, u32 frame_size
)
875 struct ieee80211_mgmt
*mgmt
= (struct ieee80211_mgmt
*)beacon
;
877 /* The index is relative to frame start but we start looking at the
878 * variable-length part of the beacon. */
879 tim_idx
= mgmt
->u
.beacon
.variable
- beacon
;
881 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
882 while ((tim_idx
< (frame_size
- 2)) &&
883 (beacon
[tim_idx
] != WLAN_EID_TIM
))
884 tim_idx
+= beacon
[tim_idx
+1] + 2;
886 /* If TIM field was found, set variables */
887 if ((tim_idx
< (frame_size
- 1)) && (beacon
[tim_idx
] == WLAN_EID_TIM
)) {
888 beacon_cmd
->tim_idx
= cpu_to_le32(tim_idx
);
889 beacon_cmd
->tim_size
= cpu_to_le32((u32
)beacon
[tim_idx
+1]);
891 IWL_WARN(mvm
, "Unable to find TIM Element in beacon\n");
895 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm
*mvm
,
896 struct ieee80211_vif
*vif
,
897 struct sk_buff
*beacon
)
899 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
900 struct iwl_host_cmd cmd
= {
901 .id
= BEACON_TEMPLATE_CMD
,
904 struct iwl_mac_beacon_cmd beacon_cmd
= {};
905 struct ieee80211_tx_info
*info
;
909 if (WARN_ON(!beacon
))
912 beacon_skb_len
= beacon
->len
;
914 /* TODO: for now the beacon template id is set to be the mac context id.
915 * Might be better to handle it as another resource ... */
916 beacon_cmd
.template_id
= cpu_to_le32((u32
)mvmvif
->id
);
917 info
= IEEE80211_SKB_CB(beacon
);
919 /* Set up TX command fields */
920 beacon_cmd
.tx
.len
= cpu_to_le16((u16
)beacon_skb_len
);
921 beacon_cmd
.tx
.sta_id
= mvmvif
->bcast_sta
.sta_id
;
922 beacon_cmd
.tx
.life_time
= cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE
);
923 tx_flags
= TX_CMD_FLG_SEQ_CTL
| TX_CMD_FLG_TSF
;
925 iwl_mvm_bt_coex_tx_prio(mvm
, (void *)beacon
->data
, info
, 0) <<
926 TX_CMD_FLG_BT_PRIO_POS
;
927 beacon_cmd
.tx
.tx_flags
= cpu_to_le32(tx_flags
);
929 mvm
->mgmt_last_antenna_idx
=
930 iwl_mvm_next_antenna(mvm
, mvm
->fw
->valid_tx_ant
,
931 mvm
->mgmt_last_antenna_idx
);
933 beacon_cmd
.tx
.rate_n_flags
=
934 cpu_to_le32(BIT(mvm
->mgmt_last_antenna_idx
) <<
937 if (info
->band
== IEEE80211_BAND_5GHZ
|| vif
->p2p
) {
938 rate
= IWL_FIRST_OFDM_RATE
;
940 rate
= IWL_FIRST_CCK_RATE
;
941 beacon_cmd
.tx
.rate_n_flags
|= cpu_to_le32(RATE_MCS_CCK_MSK
);
943 beacon_cmd
.tx
.rate_n_flags
|=
944 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate
));
946 /* Set up TX beacon command fields */
947 if (vif
->type
== NL80211_IFTYPE_AP
)
948 iwl_mvm_mac_ctxt_set_tim(mvm
, &beacon_cmd
,
953 cmd
.len
[0] = sizeof(beacon_cmd
);
954 cmd
.data
[0] = &beacon_cmd
;
955 cmd
.dataflags
[0] = 0;
956 cmd
.len
[1] = beacon_skb_len
;
957 cmd
.data
[1] = beacon
->data
;
958 cmd
.dataflags
[1] = IWL_HCMD_DFL_DUP
;
960 return iwl_mvm_send_cmd(mvm
, &cmd
);
963 /* The beacon template for the AP/GO/IBSS has changed and needs update */
964 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm
*mvm
,
965 struct ieee80211_vif
*vif
)
967 struct sk_buff
*beacon
;
970 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
&&
971 vif
->type
!= NL80211_IFTYPE_ADHOC
);
973 beacon
= ieee80211_beacon_get_template(mvm
->hw
, vif
, NULL
);
977 ret
= iwl_mvm_mac_ctxt_send_beacon(mvm
, vif
, beacon
);
978 dev_kfree_skb(beacon
);
982 struct iwl_mvm_mac_ap_iterator_data
{
984 struct ieee80211_vif
*vif
;
985 u32 beacon_device_ts
;
989 /* Find the beacon_device_ts and beacon_int for a managed interface */
990 static void iwl_mvm_mac_ap_iterator(void *_data
, u8
*mac
,
991 struct ieee80211_vif
*vif
)
993 struct iwl_mvm_mac_ap_iterator_data
*data
= _data
;
995 if (vif
->type
!= NL80211_IFTYPE_STATION
|| !vif
->bss_conf
.assoc
)
998 /* Station client has higher priority over P2P client*/
999 if (vif
->p2p
&& data
->beacon_device_ts
)
1002 data
->beacon_device_ts
= vif
->bss_conf
.sync_device_ts
;
1003 data
->beacon_int
= vif
->bss_conf
.beacon_int
;
1007 * Fill the specific data for mac context of type AP of P2P GO
1009 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm
*mvm
,
1010 struct ieee80211_vif
*vif
,
1011 struct iwl_mac_data_ap
*ctxt_ap
,
1014 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1015 struct iwl_mvm_mac_ap_iterator_data data
= {
1018 .beacon_device_ts
= 0
1021 ctxt_ap
->bi
= cpu_to_le32(vif
->bss_conf
.beacon_int
);
1022 ctxt_ap
->bi_reciprocal
=
1023 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
));
1024 ctxt_ap
->dtim_interval
= cpu_to_le32(vif
->bss_conf
.beacon_int
*
1025 vif
->bss_conf
.dtim_period
);
1026 ctxt_ap
->dtim_reciprocal
=
1027 cpu_to_le32(iwl_mvm_reciprocal(vif
->bss_conf
.beacon_int
*
1028 vif
->bss_conf
.dtim_period
));
1030 ctxt_ap
->mcast_qid
= cpu_to_le32(vif
->cab_queue
);
1033 * Only set the beacon time when the MAC is being added, when we
1034 * just modify the MAC then we should keep the time -- the firmware
1035 * can otherwise have a "jumping" TBTT.
1039 * If there is a station/P2P client interface which is
1040 * associated, set the AP's TBTT far enough from the station's
1041 * TBTT. Otherwise, set it to the current system time
1043 ieee80211_iterate_active_interfaces_atomic(
1044 mvm
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1045 iwl_mvm_mac_ap_iterator
, &data
);
1047 if (data
.beacon_device_ts
) {
1048 u32 rand
= (prandom_u32() % (64 - 36)) + 36;
1049 mvmvif
->ap_beacon_time
= data
.beacon_device_ts
+
1050 ieee80211_tu_to_usec(data
.beacon_int
* rand
/
1053 mvmvif
->ap_beacon_time
=
1054 iwl_read_prph(mvm
->trans
,
1055 DEVICE_SYSTEM_TIME_REG
);
1059 ctxt_ap
->beacon_time
= cpu_to_le32(mvmvif
->ap_beacon_time
);
1060 ctxt_ap
->beacon_tsf
= 0; /* unused */
1062 /* TODO: Assume that the beacon id == mac context id */
1063 ctxt_ap
->beacon_template
= cpu_to_le32(mvmvif
->id
);
1066 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm
*mvm
,
1067 struct ieee80211_vif
*vif
,
1070 struct iwl_mac_ctx_cmd cmd
= {};
1072 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| vif
->p2p
);
1074 /* Fill the common data for all mac context types */
1075 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
1078 * pass probe requests and beacons from other APs (needed
1079 * for ht protection)
1081 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
|
1082 MAC_FILTER_IN_BEACON
);
1084 /* Fill the data specific for ap mode */
1085 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.ap
,
1086 action
== FW_CTXT_ACTION_ADD
);
1088 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1091 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm
*mvm
,
1092 struct ieee80211_vif
*vif
,
1095 struct iwl_mac_ctx_cmd cmd
= {};
1096 struct ieee80211_p2p_noa_attr
*noa
= &vif
->bss_conf
.p2p_noa_attr
;
1098 WARN_ON(vif
->type
!= NL80211_IFTYPE_AP
|| !vif
->p2p
);
1100 /* Fill the common data for all mac context types */
1101 iwl_mvm_mac_ctxt_cmd_common(mvm
, vif
, &cmd
, action
);
1104 * pass probe requests and beacons from other APs (needed
1105 * for ht protection)
1107 cmd
.filter_flags
|= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST
|
1108 MAC_FILTER_IN_BEACON
);
1110 /* Fill the data specific for GO mode */
1111 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm
, vif
, &cmd
.go
.ap
,
1112 action
== FW_CTXT_ACTION_ADD
);
1114 cmd
.go
.ctwin
= cpu_to_le32(noa
->oppps_ctwindow
&
1115 IEEE80211_P2P_OPPPS_CTWINDOW_MASK
);
1116 cmd
.go
.opp_ps_enabled
=
1117 cpu_to_le32(!!(noa
->oppps_ctwindow
&
1118 IEEE80211_P2P_OPPPS_ENABLE_BIT
));
1120 return iwl_mvm_mac_ctxt_send_cmd(mvm
, &cmd
);
1123 static int iwl_mvm_mac_ctx_send(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1124 u32 action
, bool force_assoc_off
)
1126 switch (vif
->type
) {
1127 case NL80211_IFTYPE_STATION
:
1128 return iwl_mvm_mac_ctxt_cmd_sta(mvm
, vif
, action
,
1131 case NL80211_IFTYPE_AP
:
1133 return iwl_mvm_mac_ctxt_cmd_ap(mvm
, vif
, action
);
1135 return iwl_mvm_mac_ctxt_cmd_go(mvm
, vif
, action
);
1137 case NL80211_IFTYPE_MONITOR
:
1138 return iwl_mvm_mac_ctxt_cmd_listener(mvm
, vif
, action
);
1139 case NL80211_IFTYPE_P2P_DEVICE
:
1140 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm
, vif
, action
);
1141 case NL80211_IFTYPE_ADHOC
:
1142 return iwl_mvm_mac_ctxt_cmd_ibss(mvm
, vif
, action
);
1150 int iwl_mvm_mac_ctxt_add(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1152 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1155 if (WARN_ONCE(mvmvif
->uploaded
, "Adding active MAC %pM/%d\n",
1156 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1159 ret
= iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_ADD
,
1164 /* will only do anything at resume from D3 time */
1165 iwl_mvm_set_last_nonqos_seq(mvm
, vif
);
1167 mvmvif
->uploaded
= true;
1171 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1172 bool force_assoc_off
)
1174 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1176 if (WARN_ONCE(!mvmvif
->uploaded
, "Changing inactive MAC %pM/%d\n",
1177 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1180 return iwl_mvm_mac_ctx_send(mvm
, vif
, FW_CTXT_ACTION_MODIFY
,
1184 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1186 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1187 struct iwl_mac_ctx_cmd cmd
;
1190 if (WARN_ONCE(!mvmvif
->uploaded
, "Removing inactive MAC %pM/%d\n",
1191 vif
->addr
, ieee80211_vif_type_p2p(vif
)))
1194 memset(&cmd
, 0, sizeof(cmd
));
1196 cmd
.id_and_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif
->id
,
1198 cmd
.action
= cpu_to_le32(FW_CTXT_ACTION_REMOVE
);
1200 ret
= iwl_mvm_send_cmd_pdu(mvm
, MAC_CONTEXT_CMD
, 0,
1203 IWL_ERR(mvm
, "Failed to remove MAC context: %d\n", ret
);
1207 mvmvif
->uploaded
= false;
1209 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1210 mvm
->hw
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
1215 static void iwl_mvm_csa_count_down(struct iwl_mvm
*mvm
,
1216 struct ieee80211_vif
*csa_vif
, u32 gp2
)
1218 struct iwl_mvm_vif
*mvmvif
=
1219 iwl_mvm_vif_from_mac80211(csa_vif
);
1221 if (!ieee80211_csa_is_complete(csa_vif
)) {
1222 int c
= ieee80211_csa_update_counter(csa_vif
);
1224 iwl_mvm_mac_ctxt_beacon_changed(mvm
, csa_vif
);
1226 !iwl_mvm_te_scheduled(&mvmvif
->time_event_data
) && gp2
) {
1227 u32 rel_time
= (c
+ 1) *
1228 csa_vif
->bss_conf
.beacon_int
-
1229 IWL_MVM_CHANNEL_SWITCH_TIME
;
1230 u32 apply_time
= gp2
+ rel_time
* 1024;
1232 iwl_mvm_schedule_csa_noa(mvm
, csa_vif
,
1233 IWL_MVM_CHANNEL_SWITCH_TIME
-
1234 IWL_MVM_CHANNEL_SWITCH_MARGIN
,
1237 } else if (!iwl_mvm_te_scheduled(&mvmvif
->time_event_data
)) {
1238 /* we don't have CSA NoA scheduled yet, switch now */
1239 ieee80211_csa_finish(csa_vif
);
1240 RCU_INIT_POINTER(mvm
->csa_vif
, NULL
);
1244 int iwl_mvm_rx_beacon_notif(struct iwl_mvm
*mvm
,
1245 struct iwl_rx_cmd_buffer
*rxb
,
1246 struct iwl_device_cmd
*cmd
)
1248 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1249 struct iwl_mvm_tx_resp
*beacon_notify_hdr
;
1250 struct ieee80211_vif
*csa_vif
;
1251 struct ieee80211_vif
*tx_blocked_vif
;
1254 lockdep_assert_held(&mvm
->mutex
);
1256 if (mvm
->fw
->ucode_capa
.api
[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON
) {
1257 struct iwl_extended_beacon_notif
*beacon
= (void *)pkt
->data
;
1259 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1260 tsf
= le64_to_cpu(beacon
->tsf
);
1261 mvm
->ap_last_beacon_gp2
= le32_to_cpu(beacon
->gp2
);
1263 struct iwl_beacon_notif
*beacon
= (void *)pkt
->data
;
1265 beacon_notify_hdr
= &beacon
->beacon_notify_hdr
;
1266 tsf
= le64_to_cpu(beacon
->tsf
);
1270 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1271 le16_to_cpu(beacon_notify_hdr
->status
.status
) &
1273 beacon_notify_hdr
->failure_frame
, tsf
,
1274 mvm
->ap_last_beacon_gp2
,
1275 le32_to_cpu(beacon_notify_hdr
->initial_rate
));
1277 csa_vif
= rcu_dereference_protected(mvm
->csa_vif
,
1278 lockdep_is_held(&mvm
->mutex
));
1279 if (unlikely(csa_vif
&& csa_vif
->csa_active
))
1280 iwl_mvm_csa_count_down(mvm
, csa_vif
, mvm
->ap_last_beacon_gp2
);
1282 tx_blocked_vif
= rcu_dereference_protected(mvm
->csa_tx_blocked_vif
,
1283 lockdep_is_held(&mvm
->mutex
));
1284 if (unlikely(tx_blocked_vif
)) {
1285 struct iwl_mvm_vif
*mvmvif
=
1286 iwl_mvm_vif_from_mac80211(tx_blocked_vif
);
1289 * The channel switch is started and we have blocked the
1290 * stations. If this is the first beacon (the timeout wasn't
1291 * set), set the unblock timeout, otherwise countdown
1293 if (!mvm
->csa_tx_block_bcn_timeout
)
1294 mvm
->csa_tx_block_bcn_timeout
=
1295 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT
;
1297 mvm
->csa_tx_block_bcn_timeout
--;
1299 /* Check if the timeout is expired, and unblock tx */
1300 if (mvm
->csa_tx_block_bcn_timeout
== 0) {
1301 iwl_mvm_modify_all_sta_disable_tx(mvm
, mvmvif
, false);
1302 RCU_INIT_POINTER(mvm
->csa_tx_blocked_vif
, NULL
);
1309 static void iwl_mvm_beacon_loss_iterator(void *_data
, u8
*mac
,
1310 struct ieee80211_vif
*vif
)
1312 struct iwl_missed_beacons_notif
*missed_beacons
= _data
;
1313 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1315 if (mvmvif
->id
!= (u16
)le32_to_cpu(missed_beacons
->mac_id
))
1319 * TODO: the threshold should be adjusted based on latency conditions,
1320 * and/or in case of a CS flow on one of the other AP vifs.
1322 if (le32_to_cpu(missed_beacons
->consec_missed_beacons_since_last_rx
) >
1323 IWL_MVM_MISSED_BEACONS_THRESHOLD
)
1324 ieee80211_beacon_loss(vif
);
1327 int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm
*mvm
,
1328 struct iwl_rx_cmd_buffer
*rxb
,
1329 struct iwl_device_cmd
*cmd
)
1331 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1332 struct iwl_missed_beacons_notif
*mb
= (void *)pkt
->data
;
1335 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1336 le32_to_cpu(mb
->mac_id
),
1337 le32_to_cpu(mb
->consec_missed_beacons
),
1338 le32_to_cpu(mb
->consec_missed_beacons_since_last_rx
),
1339 le32_to_cpu(mb
->num_recvd_beacons
),
1340 le32_to_cpu(mb
->num_expected_beacons
));
1342 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1343 IEEE80211_IFACE_ITER_NORMAL
,
1344 iwl_mvm_beacon_loss_iterator
,