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68#include <linux/etherdevice.h>
69#include <net/mac80211.h>
70#include "iwl-io.h"
71#include "iwl-prph.h"
72#include "fw-api.h"
73#include "mvm.h"
74#include "time-event.h"
75
76const u8 iwl_mvm_ac_to_tx_fifo[] = {
77 IWL_MVM_TX_FIFO_VO,
78 IWL_MVM_TX_FIFO_VI,
79 IWL_MVM_TX_FIFO_BE,
80 IWL_MVM_TX_FIFO_BK,
81};
82
83const 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,
88};
89
90struct iwl_mvm_mac_iface_iterator_data {
91 struct iwl_mvm *mvm;
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;
96 bool found_vif;
97};
98
99struct iwl_mvm_hw_queues_iface_iterator_data {
100 struct ieee80211_vif *exclude_vif;
101 unsigned long used_hw_queues;
102};
103
104static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
105 struct ieee80211_vif *vif)
106{
107 struct iwl_mvm_mac_iface_iterator_data *data = _data;
108 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
109 u16 min_bi;
110
111
112 if (vif == data->vif)
113 return;
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131 switch (data->vif->type) {
132 case NL80211_IFTYPE_STATION:
133
134
135
136
137
138
139
140
141 if (vif->type != NL80211_IFTYPE_AP ||
142 data->preferred_tsf != NUM_TSF_IDS ||
143 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
144 break;
145
146 min_bi = min(data->vif->bss_conf.beacon_int,
147 vif->bss_conf.beacon_int);
148
149 if (!min_bi)
150 break;
151
152 if ((data->vif->bss_conf.beacon_int -
153 vif->bss_conf.beacon_int) % min_bi == 0) {
154 data->preferred_tsf = mvmvif->tsf_id;
155 return;
156 }
157 break;
158
159 case NL80211_IFTYPE_AP:
160
161
162
163
164
165
166
167
168
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))
173 break;
174
175 min_bi = min(data->vif->bss_conf.beacon_int,
176 vif->bss_conf.beacon_int);
177
178 if (!min_bi)
179 break;
180
181 if ((data->vif->bss_conf.beacon_int -
182 vif->bss_conf.beacon_int) % min_bi == 0) {
183 data->preferred_tsf = mvmvif->tsf_id;
184 return;
185 }
186 break;
187 default:
188
189
190
191
192
193
194
195 break;
196 }
197
198
199
200
201
202
203
204 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
205
206 if (data->preferred_tsf == mvmvif->tsf_id)
207 data->preferred_tsf = NUM_TSF_IDS;
208}
209
210
211
212
213u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif)
214{
215 u32 qmask = 0, ac;
216
217 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
218 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
219
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]);
223 }
224
225 if (vif->type == NL80211_IFTYPE_AP ||
226 vif->type == NL80211_IFTYPE_ADHOC)
227 qmask |= BIT(vif->cab_queue);
228
229 return qmask;
230}
231
232static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac,
233 struct ieee80211_vif *vif)
234{
235 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
236
237
238 if (vif == data->exclude_vif)
239 return;
240
241 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif);
242}
243
244unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm,
245 struct ieee80211_vif *exclude_vif)
246{
247 struct iwl_mvm_hw_queues_iface_iterator_data data = {
248 .exclude_vif = exclude_vif,
249 .used_hw_queues =
250 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
251 BIT(mvm->aux_queue) |
252 BIT(IWL_MVM_DQA_GCAST_QUEUE),
253 };
254
255 lockdep_assert_held(&mvm->mutex);
256
257
258 ieee80211_iterate_active_interfaces_atomic(
259 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
260 iwl_mvm_iface_hw_queues_iter, &data);
261
262 return data.used_hw_queues;
263}
264
265static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
266 struct ieee80211_vif *vif)
267{
268 struct iwl_mvm_mac_iface_iterator_data *data = _data;
269 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
270
271
272 if (vif == data->vif) {
273 data->found_vif = true;
274 return;
275 }
276
277
278
279
280
281
282
283 __clear_bit(mvmvif->id, data->available_mac_ids);
284
285
286 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
287}
288
289void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
290 struct ieee80211_vif *vif)
291{
292 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
293 struct iwl_mvm_mac_iface_iterator_data data = {
294 .mvm = mvm,
295 .vif = vif,
296 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
297
298 .preferred_tsf = NUM_TSF_IDS,
299 };
300
301 ieee80211_iterate_active_interfaces_atomic(
302 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
303 iwl_mvm_mac_tsf_id_iter, &data);
304
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,
309 NUM_TSF_IDS);
310}
311
312int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
313{
314 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
315 struct iwl_mvm_mac_iface_iterator_data data = {
316 .mvm = mvm,
317 .vif = vif,
318 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
319 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
320
321 .preferred_tsf = NUM_TSF_IDS,
322 .found_vif = false,
323 };
324 u32 ac;
325 int ret, i, queue_limit;
326 unsigned long used_hw_queues;
327
328 lockdep_assert_held(&mvm->mutex);
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347 switch (vif->type) {
348 case NL80211_IFTYPE_ADHOC:
349 break;
350 case NL80211_IFTYPE_STATION:
351 if (!vif->p2p)
352 break;
353
354 default:
355 __clear_bit(0, data.available_mac_ids);
356 }
357
358 ieee80211_iterate_active_interfaces_atomic(
359 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
360 iwl_mvm_mac_iface_iterator, &data);
361
362 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif);
363
364
365
366
367
368
369
370
371
372
373
374 if (data.found_vif)
375 return 0;
376
377
378 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
379 return -EBUSY;
380
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");
385 ret = -EIO;
386 goto exit_fail;
387 }
388
389 if (data.preferred_tsf != NUM_TSF_IDS)
390 mvmvif->tsf_id = data.preferred_tsf;
391 else
392 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
393 NUM_TSF_IDS);
394 if (mvmvif->tsf_id == NUM_TSF_IDS) {
395 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
396 ret = -EIO;
397 goto exit_fail;
398 }
399
400 mvmvif->color = 0;
401
402 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
403 mvmvif->time_event_data.id = TE_MAX;
404
405
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;
409
410 return 0;
411 }
412
413
414
415
416
417 queue_limit = IEEE80211_MAX_QUEUES;
418 BUILD_BUG_ON(IEEE80211_MAX_QUEUES >
419 BITS_PER_BYTE *
420 sizeof(mvm->hw_queue_to_mac80211[0]));
421
422
423
424
425
426
427 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
428 u8 queue = find_first_zero_bit(&used_hw_queues, queue_limit);
429
430 if (queue >= queue_limit) {
431 IWL_ERR(mvm, "Failed to allocate queue\n");
432 ret = -EIO;
433 goto exit_fail;
434 }
435
436 __set_bit(queue, &used_hw_queues);
437 vif->hw_queue[ac] = queue;
438 }
439
440
441 if (vif->type == NL80211_IFTYPE_AP ||
442 vif->type == NL80211_IFTYPE_ADHOC) {
443
444
445
446
447 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
448 vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
449 } else {
450 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
451 }
452
453 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
454 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
455 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
456
457 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
458 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
459
460 return 0;
461
462exit_fail:
463 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
464 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
465 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
466 return ret;
467}
468
469static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
470 struct ieee80211_vif *vif,
471 enum nl80211_band band,
472 u8 *cck_rates, u8 *ofdm_rates)
473{
474 struct ieee80211_supported_band *sband;
475 unsigned long basic = vif->bss_conf.basic_rates;
476 int lowest_present_ofdm = 100;
477 int lowest_present_cck = 100;
478 u8 cck = 0;
479 u8 ofdm = 0;
480 int i;
481
482 sband = mvm->hw->wiphy->bands[band];
483
484 for_each_set_bit(i, &basic, BITS_PER_LONG) {
485 int hw = sband->bitrates[i].hw_value;
486 if (hw >= IWL_FIRST_OFDM_RATE) {
487 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
488 if (lowest_present_ofdm > hw)
489 lowest_present_ofdm = hw;
490 } else {
491 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
492
493 cck |= BIT(hw);
494 if (lowest_present_cck > hw)
495 lowest_present_cck = hw;
496 }
497 }
498
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521
522 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
523 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
524 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
525 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
526
527 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
528
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531
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539
540
541
542 if (IWL_RATE_11M_INDEX < lowest_present_cck)
543 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
544 if (IWL_RATE_5M_INDEX < lowest_present_cck)
545 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
546 if (IWL_RATE_2M_INDEX < lowest_present_cck)
547 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
548
549 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
550
551 *cck_rates = cck;
552 *ofdm_rates = ofdm;
553}
554
555static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
556 struct ieee80211_vif *vif,
557 struct iwl_mac_ctx_cmd *cmd)
558{
559
560 u8 protection_mode = vif->bss_conf.ht_operation_mode &
561 IEEE80211_HT_OP_MODE_PROTECTION;
562
563 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
564
565 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
566
567
568
569
570 switch (protection_mode) {
571 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
572 break;
573 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
574 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
575 cmd->protection_flags |= cpu_to_le32(ht_flag);
576 break;
577 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
578
579 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
580 cmd->protection_flags |= cpu_to_le32(ht_flag);
581 break;
582 default:
583 IWL_ERR(mvm, "Illegal protection mode %d\n",
584 protection_mode);
585 break;
586 }
587}
588
589static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
590 struct ieee80211_vif *vif,
591 struct iwl_mac_ctx_cmd *cmd,
592 const u8 *bssid_override,
593 u32 action)
594{
595 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
596 struct ieee80211_chanctx_conf *chanctx;
597 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
598 IEEE80211_HT_OP_MODE_PROTECTION);
599 u8 cck_ack_rates, ofdm_ack_rates;
600 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
601 int i;
602
603 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
604 mvmvif->color));
605 cmd->action = cpu_to_le32(action);
606
607 switch (vif->type) {
608 case NL80211_IFTYPE_STATION:
609 if (vif->p2p)
610 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
611 else
612 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
613 break;
614 case NL80211_IFTYPE_AP:
615 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
616 break;
617 case NL80211_IFTYPE_MONITOR:
618 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
619 break;
620 case NL80211_IFTYPE_P2P_DEVICE:
621 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
622 break;
623 case NL80211_IFTYPE_ADHOC:
624 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
625 break;
626 default:
627 WARN_ON_ONCE(1);
628 }
629
630 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
631
632 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
633
634 if (bssid)
635 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
636 else
637 eth_broadcast_addr(cmd->bssid_addr);
638
639 rcu_read_lock();
640 chanctx = rcu_dereference(vif->chanctx_conf);
641 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
642 : NL80211_BAND_2GHZ,
643 &cck_ack_rates, &ofdm_ack_rates);
644 rcu_read_unlock();
645
646 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
647 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
648
649 cmd->cck_short_preamble =
650 cpu_to_le32(vif->bss_conf.use_short_preamble ?
651 MAC_FLG_SHORT_PREAMBLE : 0);
652 cmd->short_slot =
653 cpu_to_le32(vif->bss_conf.use_short_slot ?
654 MAC_FLG_SHORT_SLOT : 0);
655
656 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
657
658 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
659 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
660
661 cmd->ac[txf].cw_min =
662 cpu_to_le16(mvmvif->queue_params[i].cw_min);
663 cmd->ac[txf].cw_max =
664 cpu_to_le16(mvmvif->queue_params[i].cw_max);
665 cmd->ac[txf].edca_txop =
666 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
667 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
668 cmd->ac[txf].fifos_mask = BIT(txf);
669 }
670
671 if (vif->bss_conf.qos)
672 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
673
674 if (vif->bss_conf.use_cts_prot)
675 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
676
677 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
678 vif->bss_conf.use_cts_prot,
679 vif->bss_conf.ht_operation_mode);
680 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
681 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
682 if (ht_enabled)
683 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
684}
685
686static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
687 struct iwl_mac_ctx_cmd *cmd)
688{
689 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
690 sizeof(*cmd), cmd);
691 if (ret)
692 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
693 le32_to_cpu(cmd->action), ret);
694 return ret;
695}
696
697static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
698 struct ieee80211_vif *vif,
699 u32 action, bool force_assoc_off,
700 const u8 *bssid_override)
701{
702 struct iwl_mac_ctx_cmd cmd = {};
703 struct iwl_mac_data_sta *ctxt_sta;
704
705 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
706
707
708 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
709
710 if (vif->p2p) {
711 struct ieee80211_p2p_noa_attr *noa =
712 &vif->bss_conf.p2p_noa_attr;
713
714 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
715 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
716 ctxt_sta = &cmd.p2p_sta.sta;
717 } else {
718 ctxt_sta = &cmd.sta;
719 }
720
721
722 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
723 !force_assoc_off) {
724 u32 dtim_offs;
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741 dtim_offs = vif->bss_conf.sync_dtim_count *
742 vif->bss_conf.beacon_int;
743
744 dtim_offs *= 1024;
745
746 ctxt_sta->dtim_tsf =
747 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
748 ctxt_sta->dtim_time =
749 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
750 ctxt_sta->assoc_beacon_arrive_time =
751 cpu_to_le32(vif->bss_conf.sync_device_ts);
752
753 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
754 le64_to_cpu(ctxt_sta->dtim_tsf),
755 le32_to_cpu(ctxt_sta->dtim_time),
756 dtim_offs);
757
758 ctxt_sta->is_assoc = cpu_to_le32(1);
759 } else {
760 ctxt_sta->is_assoc = cpu_to_le32(0);
761
762
763
764
765 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
766 }
767
768 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
769 ctxt_sta->bi_reciprocal =
770 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
771 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
772 vif->bss_conf.dtim_period);
773 ctxt_sta->dtim_reciprocal =
774 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
775 vif->bss_conf.dtim_period));
776
777 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
778 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
779
780 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
781 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
782
783 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
784}
785
786static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
787 struct ieee80211_vif *vif,
788 u32 action)
789{
790 struct iwl_mac_ctx_cmd cmd = {};
791 u32 tfd_queue_msk = BIT(mvm->snif_queue);
792 int ret;
793
794 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
795
796 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
797
798 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
799 MAC_FILTER_IN_CONTROL_AND_MGMT |
800 MAC_FILTER_IN_BEACON |
801 MAC_FILTER_IN_PROBE_REQUEST |
802 MAC_FILTER_IN_CRC32);
803 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
804
805
806 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
807 vif->type, IWL_STA_GENERAL_PURPOSE);
808 if (ret)
809 return ret;
810
811 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
812}
813
814static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
815 struct ieee80211_vif *vif,
816 u32 action)
817{
818 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
819 struct iwl_mac_ctx_cmd cmd = {};
820
821 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
822
823 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
824
825 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
826 MAC_FILTER_IN_PROBE_REQUEST);
827
828
829 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
830 cmd.ibss.bi_reciprocal =
831 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
832
833
834 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
835
836 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
837}
838
839struct iwl_mvm_go_iterator_data {
840 bool go_active;
841};
842
843static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
844{
845 struct iwl_mvm_go_iterator_data *data = _data;
846 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
847
848 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
849 mvmvif->ap_ibss_active)
850 data->go_active = true;
851}
852
853static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
854 struct ieee80211_vif *vif,
855 u32 action)
856{
857 struct iwl_mac_ctx_cmd cmd = {};
858 struct iwl_mvm_go_iterator_data data = {};
859
860 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
861
862 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
863
864 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
865
866
867 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
868
869
870
871
872
873
874
875
876
877 ieee80211_iterate_active_interfaces_atomic(
878 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
879 iwl_mvm_go_iterator, &data);
880
881 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
882 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
883}
884
885static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
886 __le32 *tim_index, __le32 *tim_size,
887 u8 *beacon, u32 frame_size)
888{
889 u32 tim_idx;
890 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
891
892
893
894 tim_idx = mgmt->u.beacon.variable - beacon;
895
896
897 while ((tim_idx < (frame_size - 2)) &&
898 (beacon[tim_idx] != WLAN_EID_TIM))
899 tim_idx += beacon[tim_idx+1] + 2;
900
901
902 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
903 *tim_index = cpu_to_le32(tim_idx);
904 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
905 } else {
906 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
907 }
908}
909
910static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
911{
912 struct ieee80211_mgmt *mgmt = (void *)beacon;
913 const u8 *ie;
914
915 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
916 return 0;
917
918 frame_size -= mgmt->u.beacon.variable - beacon;
919
920 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
921 if (!ie)
922 return 0;
923
924 return ie - beacon;
925}
926
927static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
928 struct ieee80211_vif *vif)
929{
930 u8 rate;
931
932 if (info->band == NL80211_BAND_5GHZ || vif->p2p)
933 rate = IWL_FIRST_OFDM_RATE;
934 else
935 rate = IWL_FIRST_CCK_RATE;
936
937 return rate;
938}
939
940static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
941 struct ieee80211_vif *vif,
942 struct sk_buff *beacon,
943 struct iwl_tx_cmd *tx)
944{
945 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
946 struct ieee80211_tx_info *info;
947 u8 rate;
948 u32 tx_flags;
949
950 info = IEEE80211_SKB_CB(beacon);
951
952
953 tx->len = cpu_to_le16((u16)beacon->len);
954 tx->sta_id = mvmvif->bcast_sta.sta_id;
955 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
956 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
957 tx_flags |=
958 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
959 TX_CMD_FLG_BT_PRIO_POS;
960 tx->tx_flags = cpu_to_le32(tx_flags);
961
962 if (!fw_has_capa(&mvm->fw->ucode_capa,
963 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
964 mvm->mgmt_last_antenna_idx =
965 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
966 mvm->mgmt_last_antenna_idx);
967 }
968
969 tx->rate_n_flags =
970 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
971 RATE_MCS_ANT_POS);
972
973 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
974
975 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
976 if (rate == IWL_FIRST_CCK_RATE)
977 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
978
979}
980
981static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
982 struct sk_buff *beacon,
983 void *data, int len)
984{
985 struct iwl_host_cmd cmd = {
986 .id = BEACON_TEMPLATE_CMD,
987 .flags = CMD_ASYNC,
988 };
989
990 cmd.len[0] = len;
991 cmd.data[0] = data;
992 cmd.dataflags[0] = 0;
993 cmd.len[1] = beacon->len;
994 cmd.data[1] = beacon->data;
995 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
996
997 return iwl_mvm_send_cmd(mvm, &cmd);
998}
999
1000static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1001 struct ieee80211_vif *vif,
1002 struct sk_buff *beacon)
1003{
1004 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1005 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1006
1007 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1008
1009 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1010
1011 if (vif->type == NL80211_IFTYPE_AP)
1012 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1013 &beacon_cmd.tim_size,
1014 beacon->data, beacon->len);
1015
1016 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1017 sizeof(beacon_cmd));
1018}
1019
1020static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1021 struct ieee80211_vif *vif,
1022 struct sk_buff *beacon)
1023{
1024 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1025 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1026
1027 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1028
1029 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1030
1031 if (vif->type == NL80211_IFTYPE_AP)
1032 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1033 &beacon_cmd.tim_size,
1034 beacon->data, beacon->len);
1035
1036 beacon_cmd.csa_offset =
1037 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1038 WLAN_EID_CHANNEL_SWITCH,
1039 beacon->len));
1040 beacon_cmd.ecsa_offset =
1041 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1042 WLAN_EID_EXT_CHANSWITCH_ANN,
1043 beacon->len));
1044
1045 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1046 sizeof(beacon_cmd));
1047}
1048
1049static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1050 struct ieee80211_vif *vif,
1051 struct sk_buff *beacon)
1052{
1053 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1054 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1055 struct iwl_mac_beacon_cmd beacon_cmd = {};
1056 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
1057 u16 flags;
1058
1059 flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
1060
1061 if (rate == IWL_FIRST_CCK_RATE)
1062 flags |= IWL_MAC_BEACON_CCK;
1063
1064 beacon_cmd.flags = cpu_to_le16(flags);
1065 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1066 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1067
1068 if (vif->type == NL80211_IFTYPE_AP)
1069 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1070 &beacon_cmd.tim_size,
1071 beacon->data, beacon->len);
1072
1073 beacon_cmd.csa_offset =
1074 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1075 WLAN_EID_CHANNEL_SWITCH,
1076 beacon->len));
1077 beacon_cmd.ecsa_offset =
1078 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1079 WLAN_EID_EXT_CHANSWITCH_ANN,
1080 beacon->len));
1081
1082 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1083 sizeof(beacon_cmd));
1084}
1085
1086static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1087 struct ieee80211_vif *vif,
1088 struct sk_buff *beacon)
1089{
1090 if (WARN_ON(!beacon))
1091 return -EINVAL;
1092
1093 if (!fw_has_capa(&mvm->fw->ucode_capa,
1094 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1095 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1096
1097 if (fw_has_api(&mvm->fw->ucode_capa,
1098 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1099 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
1100
1101 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1102}
1103
1104
1105int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1106 struct ieee80211_vif *vif)
1107{
1108 struct sk_buff *beacon;
1109 int ret;
1110
1111 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1112 vif->type != NL80211_IFTYPE_ADHOC);
1113
1114 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1115 if (!beacon)
1116 return -ENOMEM;
1117
1118 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1119 dev_kfree_skb(beacon);
1120 return ret;
1121}
1122
1123struct iwl_mvm_mac_ap_iterator_data {
1124 struct iwl_mvm *mvm;
1125 struct ieee80211_vif *vif;
1126 u32 beacon_device_ts;
1127 u16 beacon_int;
1128};
1129
1130
1131static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1132 struct ieee80211_vif *vif)
1133{
1134 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1135
1136 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1137 return;
1138
1139
1140 if (vif->p2p && data->beacon_device_ts)
1141 return;
1142
1143 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1144 data->beacon_int = vif->bss_conf.beacon_int;
1145}
1146
1147
1148
1149
1150static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1151 struct ieee80211_vif *vif,
1152 struct iwl_mac_ctx_cmd *cmd,
1153 struct iwl_mac_data_ap *ctxt_ap,
1154 bool add)
1155{
1156 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1157 struct iwl_mvm_mac_ap_iterator_data data = {
1158 .mvm = mvm,
1159 .vif = vif,
1160 .beacon_device_ts = 0
1161 };
1162
1163
1164 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1165
1166
1167
1168
1169
1170
1171
1172 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1173 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1174 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1175 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1176 } else {
1177 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1178 }
1179
1180 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1181 ctxt_ap->bi_reciprocal =
1182 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1183 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1184 vif->bss_conf.dtim_period);
1185 ctxt_ap->dtim_reciprocal =
1186 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1187 vif->bss_conf.dtim_period));
1188
1189 if (!fw_has_api(&mvm->fw->ucode_capa,
1190 IWL_UCODE_TLV_API_STA_TYPE))
1191 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
1192
1193
1194
1195
1196
1197
1198 if (add) {
1199
1200
1201
1202
1203
1204 ieee80211_iterate_active_interfaces_atomic(
1205 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1206 iwl_mvm_mac_ap_iterator, &data);
1207
1208 if (data.beacon_device_ts) {
1209 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1210 mvmvif->ap_beacon_time = data.beacon_device_ts +
1211 ieee80211_tu_to_usec(data.beacon_int * rand /
1212 100);
1213 } else {
1214 mvmvif->ap_beacon_time =
1215 iwl_read_prph(mvm->trans,
1216 DEVICE_SYSTEM_TIME_REG);
1217 }
1218 }
1219
1220 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1221 ctxt_ap->beacon_tsf = 0;
1222
1223
1224 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1225}
1226
1227static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1228 struct ieee80211_vif *vif,
1229 u32 action)
1230{
1231 struct iwl_mac_ctx_cmd cmd = {};
1232
1233 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1234
1235
1236 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1237
1238
1239 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1240 action == FW_CTXT_ACTION_ADD);
1241
1242 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1243}
1244
1245static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1246 struct ieee80211_vif *vif,
1247 u32 action)
1248{
1249 struct iwl_mac_ctx_cmd cmd = {};
1250 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1251
1252 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1253
1254
1255 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1256
1257
1258 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1259 action == FW_CTXT_ACTION_ADD);
1260
1261 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1262 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1263 cmd.go.opp_ps_enabled =
1264 cpu_to_le32(!!(noa->oppps_ctwindow &
1265 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1266
1267 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1268}
1269
1270static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1271 u32 action, bool force_assoc_off,
1272 const u8 *bssid_override)
1273{
1274 switch (vif->type) {
1275 case NL80211_IFTYPE_STATION:
1276 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1277 force_assoc_off,
1278 bssid_override);
1279 break;
1280 case NL80211_IFTYPE_AP:
1281 if (!vif->p2p)
1282 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1283 else
1284 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1285 break;
1286 case NL80211_IFTYPE_MONITOR:
1287 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1288 case NL80211_IFTYPE_P2P_DEVICE:
1289 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1290 case NL80211_IFTYPE_ADHOC:
1291 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1292 default:
1293 break;
1294 }
1295
1296 return -EOPNOTSUPP;
1297}
1298
1299int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1300{
1301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1302 int ret;
1303
1304 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1305 vif->addr, ieee80211_vif_type_p2p(vif)))
1306 return -EIO;
1307
1308 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1309 true, NULL);
1310 if (ret)
1311 return ret;
1312
1313
1314 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1315
1316 mvmvif->uploaded = true;
1317 return 0;
1318}
1319
1320int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1321 bool force_assoc_off, const u8 *bssid_override)
1322{
1323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1324
1325 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1326 vif->addr, ieee80211_vif_type_p2p(vif)))
1327 return -EIO;
1328
1329 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1330 force_assoc_off, bssid_override);
1331}
1332
1333int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1334{
1335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1336 struct iwl_mac_ctx_cmd cmd;
1337 int ret;
1338
1339 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1340 vif->addr, ieee80211_vif_type_p2p(vif)))
1341 return -EIO;
1342
1343 memset(&cmd, 0, sizeof(cmd));
1344
1345 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1346 mvmvif->color));
1347 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1348
1349 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1350 sizeof(cmd), &cmd);
1351 if (ret) {
1352 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1353 return ret;
1354 }
1355
1356 mvmvif->uploaded = false;
1357
1358 if (vif->type == NL80211_IFTYPE_MONITOR) {
1359 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1360 iwl_mvm_dealloc_snif_sta(mvm);
1361 }
1362
1363 return 0;
1364}
1365
1366static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1367 struct ieee80211_vif *csa_vif, u32 gp2,
1368 bool tx_success)
1369{
1370 struct iwl_mvm_vif *mvmvif =
1371 iwl_mvm_vif_from_mac80211(csa_vif);
1372
1373
1374 if (!tx_success && !mvmvif->csa_countdown)
1375 return;
1376
1377 mvmvif->csa_countdown = true;
1378
1379 if (!ieee80211_csa_is_complete(csa_vif)) {
1380 int c = ieee80211_csa_update_counter(csa_vif);
1381
1382 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1383 if (csa_vif->p2p &&
1384 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1385 tx_success) {
1386 u32 rel_time = (c + 1) *
1387 csa_vif->bss_conf.beacon_int -
1388 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1389 u32 apply_time = gp2 + rel_time * 1024;
1390
1391 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1392 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1393 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1394 apply_time);
1395 }
1396 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1397
1398 ieee80211_csa_finish(csa_vif);
1399 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1400 }
1401}
1402
1403void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1404 struct iwl_rx_cmd_buffer *rxb)
1405{
1406 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1407 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1408 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1409 struct ieee80211_vif *csa_vif;
1410 struct ieee80211_vif *tx_blocked_vif;
1411 struct agg_tx_status *agg_status;
1412 u16 status;
1413
1414 lockdep_assert_held(&mvm->mutex);
1415
1416 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1417 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1418 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1419
1420 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1421 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1422 IWL_DEBUG_RX(mvm,
1423 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1424 status, beacon_notify_hdr->failure_frame,
1425 le64_to_cpu(beacon->tsf),
1426 mvm->ap_last_beacon_gp2,
1427 le32_to_cpu(beacon_notify_hdr->initial_rate));
1428
1429 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1430 lockdep_is_held(&mvm->mutex));
1431 if (unlikely(csa_vif && csa_vif->csa_active))
1432 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1433 (status == TX_STATUS_SUCCESS));
1434
1435 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1436 lockdep_is_held(&mvm->mutex));
1437 if (unlikely(tx_blocked_vif)) {
1438 struct iwl_mvm_vif *mvmvif =
1439 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1440
1441
1442
1443
1444
1445
1446 if (!mvm->csa_tx_block_bcn_timeout)
1447 mvm->csa_tx_block_bcn_timeout =
1448 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1449 else
1450 mvm->csa_tx_block_bcn_timeout--;
1451
1452
1453 if (mvm->csa_tx_block_bcn_timeout == 0) {
1454 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1455 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1456 }
1457 }
1458}
1459
1460static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1461 struct ieee80211_vif *vif)
1462{
1463 struct iwl_missed_beacons_notif *missed_beacons = _data;
1464 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1465 struct iwl_mvm *mvm = mvmvif->mvm;
1466 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1467 struct iwl_fw_dbg_trigger_tlv *trigger;
1468 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1469 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1470
1471 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1472 return;
1473
1474 rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons);
1475 rx_missed_bcon_since_rx =
1476 le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx);
1477
1478
1479
1480
1481 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1482 IWL_MVM_MISSED_BEACONS_THRESHOLD)
1483 ieee80211_beacon_loss(vif);
1484
1485 if (!iwl_fw_dbg_trigger_enabled(mvm->fw,
1486 FW_DBG_TRIGGER_MISSED_BEACONS))
1487 return;
1488
1489 trigger = iwl_fw_dbg_get_trigger(mvm->fw,
1490 FW_DBG_TRIGGER_MISSED_BEACONS);
1491 bcon_trig = (void *)trigger->data;
1492 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1493 stop_trig_missed_bcon_since_rx =
1494 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1495
1496
1497
1498 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
1499 ieee80211_vif_to_wdev(vif),
1500 trigger))
1501 return;
1502
1503 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1504 rx_missed_bcon >= stop_trig_missed_bcon)
1505 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1506}
1507
1508void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1509 struct iwl_rx_cmd_buffer *rxb)
1510{
1511 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1512 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1513
1514 IWL_DEBUG_INFO(mvm,
1515 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1516 le32_to_cpu(mb->mac_id),
1517 le32_to_cpu(mb->consec_missed_beacons),
1518 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1519 le32_to_cpu(mb->num_recvd_beacons),
1520 le32_to_cpu(mb->num_expected_beacons));
1521
1522 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1523 IEEE80211_IFACE_ITER_NORMAL,
1524 iwl_mvm_beacon_loss_iterator,
1525 mb);
1526}
1527
1528void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1529 struct iwl_rx_cmd_buffer *rxb)
1530{
1531 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1532 struct iwl_stored_beacon_notif *sb = (void *)pkt->data;
1533 struct ieee80211_rx_status rx_status;
1534 struct sk_buff *skb;
1535 u32 size = le32_to_cpu(sb->byte_count);
1536
1537 if (size == 0)
1538 return;
1539
1540 skb = alloc_skb(size, GFP_ATOMIC);
1541 if (!skb) {
1542 IWL_ERR(mvm, "alloc_skb failed\n");
1543 return;
1544 }
1545
1546
1547 memset(&rx_status, 0, sizeof(rx_status));
1548 rx_status.mactime = le64_to_cpu(sb->tsf);
1549
1550 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1551 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1552 rx_status.band =
1553 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1554 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1555 rx_status.freq =
1556 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1557 rx_status.band);
1558
1559
1560 skb_put_data(skb, sb->data, size);
1561 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1562
1563
1564 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1565}
1566
1567void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
1568 struct iwl_rx_cmd_buffer *rxb)
1569{
1570 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1571 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data;
1572 struct ieee80211_vif *csa_vif;
1573 struct iwl_mvm_vif *mvmvif;
1574 int len = iwl_rx_packet_payload_len(pkt);
1575 u32 id_n_color;
1576
1577 if (WARN_ON_ONCE(len < sizeof(*notif)))
1578 return;
1579
1580 rcu_read_lock();
1581
1582 csa_vif = rcu_dereference(mvm->csa_vif);
1583 if (WARN_ON(!csa_vif || !csa_vif->csa_active))
1584 goto out_unlock;
1585
1586 id_n_color = le32_to_cpu(notif->id_and_color);
1587
1588 mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1589 if (WARN(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color) != id_n_color,
1590 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1591 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color), id_n_color))
1592 goto out_unlock;
1593
1594 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1595
1596 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1597 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1598 csa_vif->bss_conf.beacon_int));
1599
1600 ieee80211_csa_finish(csa_vif);
1601
1602 rcu_read_unlock();
1603
1604 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1605
1606 return;
1607
1608out_unlock:
1609 rcu_read_unlock();
1610}
1611