1
2
3
4
5
6
7#include <linux/jiffies.h>
8#include <net/mac80211.h>
9
10#include "fw/notif-wait.h"
11#include "iwl-trans.h"
12#include "fw-api.h"
13#include "time-event.h"
14#include "mvm.h"
15#include "iwl-io.h"
16#include "iwl-prph.h"
17
18
19
20
21
22#define IWL_MVM_ROC_TE_TYPE_NORMAL TE_P2P_DEVICE_DISCOVERABLE
23#define IWL_MVM_ROC_TE_TYPE_MGMT_TX TE_P2P_CLIENT_ASSOC
24
25void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
26 struct iwl_mvm_time_event_data *te_data)
27{
28 lockdep_assert_held(&mvm->time_event_lock);
29
30 if (!te_data || !te_data->vif)
31 return;
32
33 list_del(&te_data->list);
34
35
36
37
38
39 INIT_LIST_HEAD(&te_data->list);
40
41 te_data->running = false;
42 te_data->uid = 0;
43 te_data->id = TE_MAX;
44 te_data->vif = NULL;
45}
46
47void iwl_mvm_roc_done_wk(struct work_struct *wk)
48{
49 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk);
50
51
52
53
54
55
56
57
58 clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
59 clear_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status);
60
61 synchronize_net();
62
63
64
65
66
67
68
69
70 mutex_lock(&mvm->mutex);
71 if (test_and_clear_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status)) {
72 struct iwl_mvm_vif *mvmvif;
73
74
75
76
77
78
79
80
81 if (!WARN_ON(!mvm->p2p_device_vif)) {
82 mvmvif = iwl_mvm_vif_from_mac80211(mvm->p2p_device_vif);
83 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true);
84 }
85 } else {
86
87 iwl_mvm_flush_sta(mvm, &mvm->aux_sta, true);
88
89
90
91 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
92 ADD_STA, 0) >= 12)
93 iwl_mvm_rm_aux_sta(mvm);
94 }
95
96 mutex_unlock(&mvm->mutex);
97}
98
99static void iwl_mvm_roc_finished(struct iwl_mvm *mvm)
100{
101
102
103
104
105
106
107
108 schedule_work(&mvm->roc_done_wk);
109}
110
111static void iwl_mvm_csa_noa_start(struct iwl_mvm *mvm)
112{
113 struct ieee80211_vif *csa_vif;
114
115 rcu_read_lock();
116
117 csa_vif = rcu_dereference(mvm->csa_vif);
118 if (!csa_vif || !csa_vif->csa_active)
119 goto out_unlock;
120
121 IWL_DEBUG_TE(mvm, "CSA NOA started\n");
122
123
124
125
126
127
128
129 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
130 IWL_WARN(mvm, "CSA NOA started too early\n");
131 goto out_unlock;
132 }
133
134 ieee80211_csa_finish(csa_vif);
135
136 rcu_read_unlock();
137
138 RCU_INIT_POINTER(mvm->csa_vif, NULL);
139
140 return;
141
142out_unlock:
143 rcu_read_unlock();
144}
145
146static bool iwl_mvm_te_check_disconnect(struct iwl_mvm *mvm,
147 struct ieee80211_vif *vif,
148 const char *errmsg)
149{
150 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
151
152 if (vif->type != NL80211_IFTYPE_STATION)
153 return false;
154
155 if (!mvmvif->csa_bcn_pending && vif->bss_conf.assoc &&
156 vif->bss_conf.dtim_period)
157 return false;
158 if (errmsg)
159 IWL_ERR(mvm, "%s\n", errmsg);
160
161 if (mvmvif->csa_bcn_pending) {
162 struct iwl_mvm_sta *mvmsta;
163
164 rcu_read_lock();
165 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
166 if (!WARN_ON(!mvmsta))
167 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
168 rcu_read_unlock();
169 }
170
171 iwl_mvm_connection_loss(mvm, vif, errmsg);
172 return true;
173}
174
175static void
176iwl_mvm_te_handle_notify_csa(struct iwl_mvm *mvm,
177 struct iwl_mvm_time_event_data *te_data,
178 struct iwl_time_event_notif *notif)
179{
180 struct ieee80211_vif *vif = te_data->vif;
181 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
182
183 if (!notif->status)
184 IWL_DEBUG_TE(mvm, "CSA time event failed to start\n");
185
186 switch (te_data->vif->type) {
187 case NL80211_IFTYPE_AP:
188 if (!notif->status)
189 mvmvif->csa_failed = true;
190 iwl_mvm_csa_noa_start(mvm);
191 break;
192 case NL80211_IFTYPE_STATION:
193 if (!notif->status) {
194 iwl_mvm_connection_loss(mvm, vif,
195 "CSA TE failed to start");
196 break;
197 }
198 iwl_mvm_csa_client_absent(mvm, te_data->vif);
199 cancel_delayed_work(&mvmvif->csa_work);
200 ieee80211_chswitch_done(te_data->vif, true);
201 break;
202 default:
203
204 WARN_ON_ONCE(1);
205 break;
206 }
207
208
209 iwl_mvm_te_clear_data(mvm, te_data);
210}
211
212static void iwl_mvm_te_check_trigger(struct iwl_mvm *mvm,
213 struct iwl_time_event_notif *notif,
214 struct iwl_mvm_time_event_data *te_data)
215{
216 struct iwl_fw_dbg_trigger_tlv *trig;
217 struct iwl_fw_dbg_trigger_time_event *te_trig;
218 int i;
219
220 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
221 ieee80211_vif_to_wdev(te_data->vif),
222 FW_DBG_TRIGGER_TIME_EVENT);
223 if (!trig)
224 return;
225
226 te_trig = (void *)trig->data;
227
228 for (i = 0; i < ARRAY_SIZE(te_trig->time_events); i++) {
229 u32 trig_te_id = le32_to_cpu(te_trig->time_events[i].id);
230 u32 trig_action_bitmap =
231 le32_to_cpu(te_trig->time_events[i].action_bitmap);
232 u32 trig_status_bitmap =
233 le32_to_cpu(te_trig->time_events[i].status_bitmap);
234
235 if (trig_te_id != te_data->id ||
236 !(trig_action_bitmap & le32_to_cpu(notif->action)) ||
237 !(trig_status_bitmap & BIT(le32_to_cpu(notif->status))))
238 continue;
239
240 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
241 "Time event %d Action 0x%x received status: %d",
242 te_data->id,
243 le32_to_cpu(notif->action),
244 le32_to_cpu(notif->status));
245 break;
246 }
247}
248
249
250
251
252
253
254
255
256static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
257 struct iwl_mvm_time_event_data *te_data,
258 struct iwl_time_event_notif *notif)
259{
260 lockdep_assert_held(&mvm->time_event_lock);
261
262 IWL_DEBUG_TE(mvm, "Handle time event notif - UID = 0x%x action %d\n",
263 le32_to_cpu(notif->unique_id),
264 le32_to_cpu(notif->action));
265
266 iwl_mvm_te_check_trigger(mvm, notif, te_data);
267
268
269
270
271
272
273
274
275
276 if (!le32_to_cpu(notif->status)) {
277 const char *msg;
278
279 if (notif->action & cpu_to_le32(TE_V2_NOTIF_HOST_EVENT_START))
280 msg = "Time Event start notification failure";
281 else
282 msg = "Time Event end notification failure";
283
284 IWL_DEBUG_TE(mvm, "%s\n", msg);
285
286 if (iwl_mvm_te_check_disconnect(mvm, te_data->vif, msg)) {
287 iwl_mvm_te_clear_data(mvm, te_data);
288 return;
289 }
290 }
291
292 if (le32_to_cpu(notif->action) & TE_V2_NOTIF_HOST_EVENT_END) {
293 IWL_DEBUG_TE(mvm,
294 "TE ended - current time %lu, estimated end %lu\n",
295 jiffies, te_data->end_jiffies);
296
297 switch (te_data->vif->type) {
298 case NL80211_IFTYPE_P2P_DEVICE:
299 ieee80211_remain_on_channel_expired(mvm->hw);
300 set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status);
301 iwl_mvm_roc_finished(mvm);
302 break;
303 case NL80211_IFTYPE_STATION:
304
305
306
307
308
309 if (te_data->id == TE_CHANNEL_SWITCH_PERIOD) {
310 IWL_DEBUG_TE(mvm,
311 "No beacon heard and the CS time event is over, don't disconnect\n");
312 break;
313 }
314
315
316
317
318
319 iwl_mvm_te_check_disconnect(mvm, te_data->vif,
320 !te_data->vif->bss_conf.assoc ?
321 "Not associated and the time event is over already..." :
322 "No beacon heard and the time event is over already...");
323 break;
324 default:
325 break;
326 }
327
328 iwl_mvm_te_clear_data(mvm, te_data);
329 } else if (le32_to_cpu(notif->action) & TE_V2_NOTIF_HOST_EVENT_START) {
330 te_data->running = true;
331 te_data->end_jiffies = TU_TO_EXP_TIME(te_data->duration);
332
333 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
334 set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
335 ieee80211_ready_on_channel(mvm->hw);
336 } else if (te_data->id == TE_CHANNEL_SWITCH_PERIOD) {
337 iwl_mvm_te_handle_notify_csa(mvm, te_data, notif);
338 }
339 } else {
340 IWL_WARN(mvm, "Got TE with unknown action\n");
341 }
342}
343
344
345
346
347static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm,
348 struct iwl_time_event_notif *notif)
349{
350 struct iwl_mvm_time_event_data *te_data, *tmp;
351 bool aux_roc_te = false;
352
353 list_for_each_entry_safe(te_data, tmp, &mvm->aux_roc_te_list, list) {
354 if (le32_to_cpu(notif->unique_id) == te_data->uid) {
355 aux_roc_te = true;
356 break;
357 }
358 }
359 if (!aux_roc_te)
360 return -EINVAL;
361
362 iwl_mvm_te_check_trigger(mvm, notif, te_data);
363
364 IWL_DEBUG_TE(mvm,
365 "Aux ROC time event notification - UID = 0x%x action %d (error = %d)\n",
366 le32_to_cpu(notif->unique_id),
367 le32_to_cpu(notif->action), le32_to_cpu(notif->status));
368
369 if (!le32_to_cpu(notif->status) ||
370 le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_END) {
371
372 ieee80211_remain_on_channel_expired(mvm->hw);
373 iwl_mvm_roc_finished(mvm);
374 list_del(&te_data->list);
375 te_data->running = false;
376 te_data->vif = NULL;
377 te_data->uid = 0;
378 te_data->id = TE_MAX;
379 } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) {
380 set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status);
381 te_data->running = true;
382 ieee80211_ready_on_channel(mvm->hw);
383 } else {
384 IWL_DEBUG_TE(mvm,
385 "ERROR: Unknown Aux ROC Time Event (action = %d)\n",
386 le32_to_cpu(notif->action));
387 return -EINVAL;
388 }
389
390 return 0;
391}
392
393
394
395
396void iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm,
397 struct iwl_rx_cmd_buffer *rxb)
398{
399 struct iwl_rx_packet *pkt = rxb_addr(rxb);
400 struct iwl_time_event_notif *notif = (void *)pkt->data;
401 struct iwl_mvm_time_event_data *te_data, *tmp;
402
403 IWL_DEBUG_TE(mvm, "Time event notification - UID = 0x%x action %d\n",
404 le32_to_cpu(notif->unique_id),
405 le32_to_cpu(notif->action));
406
407 spin_lock_bh(&mvm->time_event_lock);
408
409 if (!iwl_mvm_aux_roc_te_handle_notif(mvm, notif))
410 goto unlock;
411
412 list_for_each_entry_safe(te_data, tmp, &mvm->time_event_list, list) {
413 if (le32_to_cpu(notif->unique_id) == te_data->uid)
414 iwl_mvm_te_handle_notif(mvm, te_data, notif);
415 }
416unlock:
417 spin_unlock_bh(&mvm->time_event_lock);
418}
419
420static bool iwl_mvm_te_notif(struct iwl_notif_wait_data *notif_wait,
421 struct iwl_rx_packet *pkt, void *data)
422{
423 struct iwl_mvm *mvm =
424 container_of(notif_wait, struct iwl_mvm, notif_wait);
425 struct iwl_mvm_time_event_data *te_data = data;
426 struct iwl_time_event_notif *resp;
427 int resp_len = iwl_rx_packet_payload_len(pkt);
428
429 if (WARN_ON(pkt->hdr.cmd != TIME_EVENT_NOTIFICATION))
430 return true;
431
432 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
433 IWL_ERR(mvm, "Invalid TIME_EVENT_NOTIFICATION response\n");
434 return true;
435 }
436
437 resp = (void *)pkt->data;
438
439
440 if (le32_to_cpu(resp->unique_id) != te_data->uid)
441 return false;
442
443 IWL_DEBUG_TE(mvm, "TIME_EVENT_NOTIFICATION response - UID = 0x%x\n",
444 te_data->uid);
445 if (!resp->status)
446 IWL_ERR(mvm,
447 "TIME_EVENT_NOTIFICATION received but not executed\n");
448
449 return true;
450}
451
452static bool iwl_mvm_time_event_response(struct iwl_notif_wait_data *notif_wait,
453 struct iwl_rx_packet *pkt, void *data)
454{
455 struct iwl_mvm *mvm =
456 container_of(notif_wait, struct iwl_mvm, notif_wait);
457 struct iwl_mvm_time_event_data *te_data = data;
458 struct iwl_time_event_resp *resp;
459 int resp_len = iwl_rx_packet_payload_len(pkt);
460
461 if (WARN_ON(pkt->hdr.cmd != TIME_EVENT_CMD))
462 return true;
463
464 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
465 IWL_ERR(mvm, "Invalid TIME_EVENT_CMD response\n");
466 return true;
467 }
468
469 resp = (void *)pkt->data;
470
471
472 if (WARN_ON_ONCE(le32_to_cpu(resp->id) != te_data->id))
473 return false;
474
475 te_data->uid = le32_to_cpu(resp->unique_id);
476 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
477 te_data->uid);
478 return true;
479}
480
481static int iwl_mvm_time_event_send_add(struct iwl_mvm *mvm,
482 struct ieee80211_vif *vif,
483 struct iwl_mvm_time_event_data *te_data,
484 struct iwl_time_event_cmd *te_cmd)
485{
486 static const u16 time_event_response[] = { TIME_EVENT_CMD };
487 struct iwl_notification_wait wait_time_event;
488 int ret;
489
490 lockdep_assert_held(&mvm->mutex);
491
492 IWL_DEBUG_TE(mvm, "Add new TE, duration %d TU\n",
493 le32_to_cpu(te_cmd->duration));
494
495 spin_lock_bh(&mvm->time_event_lock);
496 if (WARN_ON(te_data->id != TE_MAX)) {
497 spin_unlock_bh(&mvm->time_event_lock);
498 return -EIO;
499 }
500 te_data->vif = vif;
501 te_data->duration = le32_to_cpu(te_cmd->duration);
502 te_data->id = le32_to_cpu(te_cmd->id);
503 list_add_tail(&te_data->list, &mvm->time_event_list);
504 spin_unlock_bh(&mvm->time_event_lock);
505
506
507
508
509
510
511
512
513
514
515 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
516 time_event_response,
517 ARRAY_SIZE(time_event_response),
518 iwl_mvm_time_event_response, te_data);
519
520 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, 0,
521 sizeof(*te_cmd), te_cmd);
522 if (ret) {
523 IWL_ERR(mvm, "Couldn't send TIME_EVENT_CMD: %d\n", ret);
524 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
525 goto out_clear_te;
526 }
527
528
529 ret = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
530
531 WARN_ON_ONCE(ret);
532
533 if (ret) {
534 out_clear_te:
535 spin_lock_bh(&mvm->time_event_lock);
536 iwl_mvm_te_clear_data(mvm, te_data);
537 spin_unlock_bh(&mvm->time_event_lock);
538 }
539 return ret;
540}
541
542void iwl_mvm_protect_session(struct iwl_mvm *mvm,
543 struct ieee80211_vif *vif,
544 u32 duration, u32 min_duration,
545 u32 max_delay, bool wait_for_notif)
546{
547 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
548 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
549 const u16 te_notif_response[] = { TIME_EVENT_NOTIFICATION };
550 struct iwl_notification_wait wait_te_notif;
551 struct iwl_time_event_cmd time_cmd = {};
552
553 lockdep_assert_held(&mvm->mutex);
554
555 if (te_data->running &&
556 time_after(te_data->end_jiffies, TU_TO_EXP_TIME(min_duration))) {
557 IWL_DEBUG_TE(mvm, "We have enough time in the current TE: %u\n",
558 jiffies_to_msecs(te_data->end_jiffies - jiffies));
559 return;
560 }
561
562 if (te_data->running) {
563 IWL_DEBUG_TE(mvm, "extend 0x%x: only %u ms left\n",
564 te_data->uid,
565 jiffies_to_msecs(te_data->end_jiffies - jiffies));
566
567
568
569
570
571
572
573
574 iwl_mvm_stop_session_protection(mvm, vif);
575 }
576
577 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
578 time_cmd.id_and_color =
579 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
580 time_cmd.id = cpu_to_le32(TE_BSS_STA_AGGRESSIVE_ASSOC);
581
582 time_cmd.apply_time = cpu_to_le32(0);
583
584 time_cmd.max_frags = TE_V2_FRAG_NONE;
585 time_cmd.max_delay = cpu_to_le32(max_delay);
586
587 time_cmd.interval = cpu_to_le32(1);
588 time_cmd.duration = cpu_to_le32(duration);
589 time_cmd.repeat = 1;
590 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
591 TE_V2_NOTIF_HOST_EVENT_END |
592 TE_V2_START_IMMEDIATELY);
593
594 if (!wait_for_notif) {
595 iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
596 return;
597 }
598
599
600
601
602
603 iwl_init_notification_wait(&mvm->notif_wait, &wait_te_notif,
604 te_notif_response,
605 ARRAY_SIZE(te_notif_response),
606 iwl_mvm_te_notif, te_data);
607
608
609 if (iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd)) {
610 IWL_ERR(mvm, "Failed to add TE to protect session\n");
611 iwl_remove_notification(&mvm->notif_wait, &wait_te_notif);
612 } else if (iwl_wait_notification(&mvm->notif_wait, &wait_te_notif,
613 TU_TO_JIFFIES(max_delay))) {
614 IWL_ERR(mvm, "Failed to protect session until TE\n");
615 }
616}
617
618static void iwl_mvm_cancel_session_protection(struct iwl_mvm *mvm,
619 struct iwl_mvm_vif *mvmvif,
620 u32 id)
621{
622 struct iwl_mvm_session_prot_cmd cmd = {
623 .id_and_color =
624 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
625 mvmvif->color)),
626 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
627 .conf_id = cpu_to_le32(id),
628 };
629 int ret;
630
631 ret = iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(SESSION_PROTECTION_CMD,
632 MAC_CONF_GROUP, 0),
633 0, sizeof(cmd), &cmd);
634 if (ret)
635 IWL_ERR(mvm,
636 "Couldn't send the SESSION_PROTECTION_CMD: %d\n", ret);
637}
638
639static bool __iwl_mvm_remove_time_event(struct iwl_mvm *mvm,
640 struct iwl_mvm_time_event_data *te_data,
641 u32 *uid)
642{
643 u32 id;
644 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(te_data->vif);
645 enum nl80211_iftype iftype;
646
647 if (!te_data->vif)
648 return false;
649
650 iftype = te_data->vif->type;
651
652
653
654
655
656 spin_lock_bh(&mvm->time_event_lock);
657
658
659 *uid = te_data->uid;
660 id = te_data->id;
661
662
663
664
665 iwl_mvm_te_clear_data(mvm, te_data);
666 spin_unlock_bh(&mvm->time_event_lock);
667
668
669
670
671 if (fw_has_capa(&mvm->fw->ucode_capa,
672 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
673 if (mvmvif && id < SESSION_PROTECT_CONF_MAX_ID) {
674
675 iwl_mvm_cancel_session_protection(mvm, mvmvif, id);
676 if (iftype == NL80211_IFTYPE_P2P_DEVICE) {
677 set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status);
678 iwl_mvm_roc_finished(mvm);
679 }
680 }
681 return false;
682 } else {
683
684
685
686
687 if (id == TE_MAX) {
688 IWL_DEBUG_TE(mvm, "TE 0x%x has already ended\n", *uid);
689 return false;
690 }
691 }
692
693 return true;
694}
695
696
697
698
699
700
701
702static void iwl_mvm_remove_aux_roc_te(struct iwl_mvm *mvm,
703 struct iwl_mvm_vif *mvmvif,
704 struct iwl_mvm_time_event_data *te_data)
705{
706 struct iwl_hs20_roc_req aux_cmd = {};
707 u16 len = sizeof(aux_cmd) - iwl_mvm_chan_info_padding(mvm);
708
709 u32 uid;
710 int ret;
711
712 if (!__iwl_mvm_remove_time_event(mvm, te_data, &uid))
713 return;
714
715 aux_cmd.event_unique_id = cpu_to_le32(uid);
716 aux_cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
717 aux_cmd.id_and_color =
718 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
719 IWL_DEBUG_TE(mvm, "Removing BSS AUX ROC TE 0x%x\n",
720 le32_to_cpu(aux_cmd.event_unique_id));
721 ret = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0,
722 len, &aux_cmd);
723
724 if (WARN_ON(ret))
725 return;
726}
727
728
729
730
731
732
733void iwl_mvm_remove_time_event(struct iwl_mvm *mvm,
734 struct iwl_mvm_vif *mvmvif,
735 struct iwl_mvm_time_event_data *te_data)
736{
737 struct iwl_time_event_cmd time_cmd = {};
738 u32 uid;
739 int ret;
740
741 if (!__iwl_mvm_remove_time_event(mvm, te_data, &uid))
742 return;
743
744
745 time_cmd.id = cpu_to_le32(uid);
746 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
747 time_cmd.id_and_color =
748 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
749
750 IWL_DEBUG_TE(mvm, "Removing TE 0x%x\n", le32_to_cpu(time_cmd.id));
751 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, 0,
752 sizeof(time_cmd), &time_cmd);
753 if (ret)
754 IWL_ERR(mvm, "Couldn't remove the time event\n");
755}
756
757void iwl_mvm_stop_session_protection(struct iwl_mvm *mvm,
758 struct ieee80211_vif *vif)
759{
760 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
761 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
762 u32 id;
763
764 lockdep_assert_held(&mvm->mutex);
765
766 spin_lock_bh(&mvm->time_event_lock);
767 id = te_data->id;
768 spin_unlock_bh(&mvm->time_event_lock);
769
770 if (fw_has_capa(&mvm->fw->ucode_capa,
771 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
772 if (id != SESSION_PROTECT_CONF_ASSOC) {
773 IWL_DEBUG_TE(mvm,
774 "don't remove session protection id=%u\n",
775 id);
776 return;
777 }
778 } else if (id != TE_BSS_STA_AGGRESSIVE_ASSOC) {
779 IWL_DEBUG_TE(mvm,
780 "don't remove TE with id=%u (not session protection)\n",
781 id);
782 return;
783 }
784
785 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
786}
787
788void iwl_mvm_rx_session_protect_notif(struct iwl_mvm *mvm,
789 struct iwl_rx_cmd_buffer *rxb)
790{
791 struct iwl_rx_packet *pkt = rxb_addr(rxb);
792 struct iwl_mvm_session_prot_notif *notif = (void *)pkt->data;
793 struct ieee80211_vif *vif;
794 struct iwl_mvm_vif *mvmvif;
795
796 rcu_read_lock();
797 vif = iwl_mvm_rcu_dereference_vif_id(mvm, le32_to_cpu(notif->mac_id),
798 true);
799
800 if (!vif)
801 goto out_unlock;
802
803 mvmvif = iwl_mvm_vif_from_mac80211(vif);
804
805
806 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
807 struct iwl_mvm_time_event_data *te_data =
808 &mvmvif->time_event_data;
809
810 if (!le32_to_cpu(notif->status)) {
811 iwl_mvm_te_check_disconnect(mvm, vif,
812 "Session protection failure");
813 spin_lock_bh(&mvm->time_event_lock);
814 iwl_mvm_te_clear_data(mvm, te_data);
815 spin_unlock_bh(&mvm->time_event_lock);
816 }
817
818 if (le32_to_cpu(notif->start)) {
819 spin_lock_bh(&mvm->time_event_lock);
820 te_data->running = le32_to_cpu(notif->start);
821 te_data->end_jiffies =
822 TU_TO_EXP_TIME(te_data->duration);
823 spin_unlock_bh(&mvm->time_event_lock);
824 } else {
825
826
827
828
829 iwl_mvm_te_check_disconnect(mvm, vif,
830 !vif->bss_conf.assoc ?
831 "Not associated and the session protection is over already..." :
832 "No beacon heard and the session protection is over already...");
833 spin_lock_bh(&mvm->time_event_lock);
834 iwl_mvm_te_clear_data(mvm, te_data);
835 spin_unlock_bh(&mvm->time_event_lock);
836 }
837
838 goto out_unlock;
839 }
840
841 if (!le32_to_cpu(notif->status) || !le32_to_cpu(notif->start)) {
842
843 mvmvif->time_event_data.id = SESSION_PROTECT_CONF_MAX_ID;
844 ieee80211_remain_on_channel_expired(mvm->hw);
845 set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status);
846 iwl_mvm_roc_finished(mvm);
847 } else if (le32_to_cpu(notif->start)) {
848 if (WARN_ON(mvmvif->time_event_data.id !=
849 le32_to_cpu(notif->conf_id)))
850 goto out_unlock;
851 set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
852 ieee80211_ready_on_channel(mvm->hw);
853 }
854
855 out_unlock:
856 rcu_read_unlock();
857}
858
859static int
860iwl_mvm_start_p2p_roc_session_protection(struct iwl_mvm *mvm,
861 struct ieee80211_vif *vif,
862 int duration,
863 enum ieee80211_roc_type type)
864{
865 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
866 struct iwl_mvm_session_prot_cmd cmd = {
867 .id_and_color =
868 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
869 mvmvif->color)),
870 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
871 .duration_tu = cpu_to_le32(MSEC_TO_TU(duration)),
872 };
873
874 lockdep_assert_held(&mvm->mutex);
875
876
877
878
879 switch (type) {
880 case IEEE80211_ROC_TYPE_NORMAL:
881 mvmvif->time_event_data.id =
882 SESSION_PROTECT_CONF_P2P_DEVICE_DISCOV;
883 break;
884 case IEEE80211_ROC_TYPE_MGMT_TX:
885 mvmvif->time_event_data.id =
886 SESSION_PROTECT_CONF_P2P_GO_NEGOTIATION;
887 break;
888 default:
889 WARN_ONCE(1, "Got an invalid ROC type\n");
890 return -EINVAL;
891 }
892
893 cmd.conf_id = cpu_to_le32(mvmvif->time_event_data.id);
894 return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(SESSION_PROTECTION_CMD,
895 MAC_CONF_GROUP, 0),
896 0, sizeof(cmd), &cmd);
897}
898
899int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
900 int duration, enum ieee80211_roc_type type)
901{
902 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
903 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
904 struct iwl_time_event_cmd time_cmd = {};
905
906 lockdep_assert_held(&mvm->mutex);
907 if (te_data->running) {
908 IWL_WARN(mvm, "P2P_DEVICE remain on channel already running\n");
909 return -EBUSY;
910 }
911
912 if (fw_has_capa(&mvm->fw->ucode_capa,
913 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
914 return iwl_mvm_start_p2p_roc_session_protection(mvm, vif,
915 duration,
916 type);
917
918 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
919 time_cmd.id_and_color =
920 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
921
922 switch (type) {
923 case IEEE80211_ROC_TYPE_NORMAL:
924 time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_NORMAL);
925 break;
926 case IEEE80211_ROC_TYPE_MGMT_TX:
927 time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_MGMT_TX);
928 break;
929 default:
930 WARN_ONCE(1, "Got an invalid ROC type\n");
931 return -EINVAL;
932 }
933
934 time_cmd.apply_time = cpu_to_le32(0);
935 time_cmd.interval = cpu_to_le32(1);
936
937
938
939
940
941
942
943 time_cmd.max_frags = min(MSEC_TO_TU(duration)/50, TE_V2_FRAG_ENDLESS);
944 time_cmd.max_delay = cpu_to_le32(MSEC_TO_TU(duration/2));
945 time_cmd.duration = cpu_to_le32(MSEC_TO_TU(duration));
946 time_cmd.repeat = 1;
947 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
948 TE_V2_NOTIF_HOST_EVENT_END |
949 TE_V2_START_IMMEDIATELY);
950
951 return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
952}
953
954static struct iwl_mvm_time_event_data *iwl_mvm_get_roc_te(struct iwl_mvm *mvm)
955{
956 struct iwl_mvm_time_event_data *te_data;
957
958 lockdep_assert_held(&mvm->mutex);
959
960 spin_lock_bh(&mvm->time_event_lock);
961
962
963
964
965
966
967
968
969 list_for_each_entry(te_data, &mvm->time_event_list, list) {
970 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE)
971 goto out;
972 }
973
974
975
976
977 te_data = list_first_entry_or_null(&mvm->aux_roc_te_list,
978 struct iwl_mvm_time_event_data,
979 list);
980out:
981 spin_unlock_bh(&mvm->time_event_lock);
982 return te_data;
983}
984
985void iwl_mvm_cleanup_roc_te(struct iwl_mvm *mvm)
986{
987 struct iwl_mvm_time_event_data *te_data;
988 u32 uid;
989
990 te_data = iwl_mvm_get_roc_te(mvm);
991 if (te_data)
992 __iwl_mvm_remove_time_event(mvm, te_data, &uid);
993}
994
995void iwl_mvm_stop_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
996{
997 struct iwl_mvm_vif *mvmvif;
998 struct iwl_mvm_time_event_data *te_data;
999
1000 if (fw_has_capa(&mvm->fw->ucode_capa,
1001 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
1002 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1003
1004 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1005 iwl_mvm_cancel_session_protection(mvm, mvmvif,
1006 mvmvif->time_event_data.id);
1007 set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status);
1008 } else {
1009 iwl_mvm_remove_aux_roc_te(mvm, mvmvif,
1010 &mvmvif->time_event_data);
1011 }
1012
1013 iwl_mvm_roc_finished(mvm);
1014
1015 return;
1016 }
1017
1018 te_data = iwl_mvm_get_roc_te(mvm);
1019 if (!te_data) {
1020 IWL_WARN(mvm, "No remain on channel event\n");
1021 return;
1022 }
1023
1024 mvmvif = iwl_mvm_vif_from_mac80211(te_data->vif);
1025
1026 if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1027 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
1028 set_bit(IWL_MVM_STATUS_NEED_FLUSH_P2P, &mvm->status);
1029 } else {
1030 iwl_mvm_remove_aux_roc_te(mvm, mvmvif, te_data);
1031 }
1032
1033 iwl_mvm_roc_finished(mvm);
1034}
1035
1036void iwl_mvm_remove_csa_period(struct iwl_mvm *mvm,
1037 struct ieee80211_vif *vif)
1038{
1039 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1040 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
1041 u32 id;
1042
1043 lockdep_assert_held(&mvm->mutex);
1044
1045 spin_lock_bh(&mvm->time_event_lock);
1046 id = te_data->id;
1047 spin_unlock_bh(&mvm->time_event_lock);
1048
1049 if (id != TE_CHANNEL_SWITCH_PERIOD)
1050 return;
1051
1052 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
1053}
1054
1055int iwl_mvm_schedule_csa_period(struct iwl_mvm *mvm,
1056 struct ieee80211_vif *vif,
1057 u32 duration, u32 apply_time)
1058{
1059 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1060 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
1061 struct iwl_time_event_cmd time_cmd = {};
1062
1063 lockdep_assert_held(&mvm->mutex);
1064
1065 if (te_data->running) {
1066 u32 id;
1067
1068 spin_lock_bh(&mvm->time_event_lock);
1069 id = te_data->id;
1070 spin_unlock_bh(&mvm->time_event_lock);
1071
1072 if (id == TE_CHANNEL_SWITCH_PERIOD) {
1073 IWL_DEBUG_TE(mvm, "CS period is already scheduled\n");
1074 return -EBUSY;
1075 }
1076
1077
1078
1079
1080
1081
1082 iwl_mvm_remove_time_event(mvm, mvmvif, te_data);
1083 }
1084
1085 time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
1086 time_cmd.id_and_color =
1087 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
1088 time_cmd.id = cpu_to_le32(TE_CHANNEL_SWITCH_PERIOD);
1089 time_cmd.apply_time = cpu_to_le32(apply_time);
1090 time_cmd.max_frags = TE_V2_FRAG_NONE;
1091 time_cmd.duration = cpu_to_le32(duration);
1092 time_cmd.repeat = 1;
1093 time_cmd.interval = cpu_to_le32(1);
1094 time_cmd.policy = cpu_to_le16(TE_V2_NOTIF_HOST_EVENT_START |
1095 TE_V2_ABSENCE);
1096 if (!apply_time)
1097 time_cmd.policy |= cpu_to_le16(TE_V2_START_IMMEDIATELY);
1098
1099 return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
1100}
1101
1102static bool iwl_mvm_session_prot_notif(struct iwl_notif_wait_data *notif_wait,
1103 struct iwl_rx_packet *pkt, void *data)
1104{
1105 struct iwl_mvm *mvm =
1106 container_of(notif_wait, struct iwl_mvm, notif_wait);
1107 struct iwl_mvm_session_prot_notif *resp;
1108 int resp_len = iwl_rx_packet_payload_len(pkt);
1109
1110 if (WARN_ON(pkt->hdr.cmd != SESSION_PROTECTION_NOTIF ||
1111 pkt->hdr.group_id != MAC_CONF_GROUP))
1112 return true;
1113
1114 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
1115 IWL_ERR(mvm, "Invalid SESSION_PROTECTION_NOTIF response\n");
1116 return true;
1117 }
1118
1119 resp = (void *)pkt->data;
1120
1121 if (!resp->status)
1122 IWL_ERR(mvm,
1123 "TIME_EVENT_NOTIFICATION received but not executed\n");
1124
1125 return true;
1126}
1127
1128void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm,
1129 struct ieee80211_vif *vif,
1130 u32 duration, u32 min_duration,
1131 bool wait_for_notif)
1132{
1133 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1134 struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
1135 const u16 notif[] = { iwl_cmd_id(SESSION_PROTECTION_NOTIF,
1136 MAC_CONF_GROUP, 0) };
1137 struct iwl_notification_wait wait_notif;
1138 struct iwl_mvm_session_prot_cmd cmd = {
1139 .id_and_color =
1140 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1141 mvmvif->color)),
1142 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
1143 .duration_tu = cpu_to_le32(MSEC_TO_TU(duration)),
1144 };
1145
1146
1147
1148
1149 mvmvif->time_event_data.id = SESSION_PROTECT_CONF_ASSOC;
1150 cmd.conf_id = cpu_to_le32(mvmvif->time_event_data.id);
1151
1152 lockdep_assert_held(&mvm->mutex);
1153
1154 spin_lock_bh(&mvm->time_event_lock);
1155 if (te_data->running &&
1156 time_after(te_data->end_jiffies, TU_TO_EXP_TIME(min_duration))) {
1157 IWL_DEBUG_TE(mvm, "We have enough time in the current TE: %u\n",
1158 jiffies_to_msecs(te_data->end_jiffies - jiffies));
1159 spin_unlock_bh(&mvm->time_event_lock);
1160
1161 return;
1162 }
1163
1164 iwl_mvm_te_clear_data(mvm, te_data);
1165 te_data->duration = le32_to_cpu(cmd.duration_tu);
1166 te_data->vif = vif;
1167 spin_unlock_bh(&mvm->time_event_lock);
1168
1169 IWL_DEBUG_TE(mvm, "Add new session protection, duration %d TU\n",
1170 le32_to_cpu(cmd.duration_tu));
1171
1172 if (!wait_for_notif) {
1173 if (iwl_mvm_send_cmd_pdu(mvm,
1174 iwl_cmd_id(SESSION_PROTECTION_CMD,
1175 MAC_CONF_GROUP, 0),
1176 0, sizeof(cmd), &cmd)) {
1177 IWL_ERR(mvm,
1178 "Couldn't send the SESSION_PROTECTION_CMD\n");
1179 spin_lock_bh(&mvm->time_event_lock);
1180 iwl_mvm_te_clear_data(mvm, te_data);
1181 spin_unlock_bh(&mvm->time_event_lock);
1182 }
1183
1184 return;
1185 }
1186
1187 iwl_init_notification_wait(&mvm->notif_wait, &wait_notif,
1188 notif, ARRAY_SIZE(notif),
1189 iwl_mvm_session_prot_notif, NULL);
1190
1191 if (iwl_mvm_send_cmd_pdu(mvm,
1192 iwl_cmd_id(SESSION_PROTECTION_CMD,
1193 MAC_CONF_GROUP, 0),
1194 0, sizeof(cmd), &cmd)) {
1195 IWL_ERR(mvm,
1196 "Couldn't send the SESSION_PROTECTION_CMD\n");
1197 iwl_remove_notification(&mvm->notif_wait, &wait_notif);
1198 } else if (iwl_wait_notification(&mvm->notif_wait, &wait_notif,
1199 TU_TO_JIFFIES(100))) {
1200 IWL_ERR(mvm,
1201 "Failed to protect session until session protection\n");
1202 }
1203}
1204