summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/quantenna/qtnfmac/event.c
blob: c775c177933b2a8b597507a945f93b4dbead9397 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
// SPDX-License-Identifier: GPL-2.0+
/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/nospec.h>

#include "cfg80211.h"
#include "core.h"
#include "qlink.h"
#include "bus.h"
#include "trans.h"
#include "util.h"
#include "event.h"
#include "qlink_util.h"

static int
qtnf_event_handle_sta_assoc(struct qtnf_wmac *mac, struct qtnf_vif *vif,
			    const struct qlink_event_sta_assoc *sta_assoc,
			    u16 len)
{
	const u8 *sta_addr;
	u16 frame_control;
	struct station_info *sinfo;
	size_t payload_len;
	u16 tlv_type;
	u16 tlv_value_len;
	const struct qlink_tlv_hdr *tlv;
	int ret = 0;

	if (unlikely(len < sizeof(*sta_assoc))) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       mac->macid, vif->vifid, len, sizeof(*sta_assoc));
		return -EINVAL;
	}

	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
		pr_err("VIF%u.%u: STA_ASSOC event when not in AP mode\n",
		       mac->macid, vif->vifid);
		return -EPROTO;
	}

	sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
	if (!sinfo)
		return -ENOMEM;

	sta_addr = sta_assoc->sta_addr;
	frame_control = le16_to_cpu(sta_assoc->frame_control);

	pr_debug("VIF%u.%u: MAC:%pM FC:%x\n", mac->macid, vif->vifid, sta_addr,
		 frame_control);

	qtnf_sta_list_add(vif, sta_addr);

	sinfo->assoc_req_ies = NULL;
	sinfo->assoc_req_ies_len = 0;
	sinfo->generation = vif->generation;

	payload_len = len - sizeof(*sta_assoc);

	qlink_for_each_tlv(tlv, sta_assoc->ies, payload_len) {
		tlv_type = le16_to_cpu(tlv->type);
		tlv_value_len = le16_to_cpu(tlv->len);

		if (tlv_type == QTN_TLV_ID_IE_SET) {
			const struct qlink_tlv_ie_set *ie_set;
			unsigned int ie_len;

			if (tlv_value_len <
			    (sizeof(*ie_set) - sizeof(ie_set->hdr))) {
				ret = -EINVAL;
				goto out;
			}

			ie_set = (const struct qlink_tlv_ie_set *)tlv;
			ie_len = tlv_value_len -
				(sizeof(*ie_set) - sizeof(ie_set->hdr));

			if (ie_set->type == QLINK_IE_SET_ASSOC_REQ && ie_len) {
				sinfo->assoc_req_ies = ie_set->ie_data;
				sinfo->assoc_req_ies_len = ie_len;
			}
		}
	}

	if (!qlink_tlv_parsing_ok(tlv, sta_assoc->ies, payload_len)) {
		pr_err("Malformed TLV buffer\n");
		ret = -EINVAL;
		goto out;
	}

	cfg80211_new_sta(vif->netdev, sta_assoc->sta_addr, sinfo,
			 GFP_KERNEL);

out:
	kfree(sinfo);
	return ret;
}

static int
qtnf_event_handle_sta_deauth(struct qtnf_wmac *mac, struct qtnf_vif *vif,
			     const struct qlink_event_sta_deauth *sta_deauth,
			     u16 len)
{
	const u8 *sta_addr;
	u16 reason;

	if (unlikely(len < sizeof(*sta_deauth))) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       mac->macid, vif->vifid, len,
		       sizeof(struct qlink_event_sta_deauth));
		return -EINVAL;
	}

	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
		pr_err("VIF%u.%u: STA_DEAUTH event when not in AP mode\n",
		       mac->macid, vif->vifid);
		return -EPROTO;
	}

	sta_addr = sta_deauth->sta_addr;
	reason = le16_to_cpu(sta_deauth->reason);

	pr_debug("VIF%u.%u: MAC:%pM reason:%x\n", mac->macid, vif->vifid,
		 sta_addr, reason);

	if (qtnf_sta_list_del(vif, sta_addr))
		cfg80211_del_sta(vif->netdev, sta_deauth->sta_addr,
				 GFP_KERNEL);

	return 0;
}

static int
qtnf_event_handle_bss_join(struct qtnf_vif *vif,
			   const struct qlink_event_bss_join *join_info,
			   u16 len)
{
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	enum ieee80211_statuscode status = le16_to_cpu(join_info->status);
	struct cfg80211_chan_def chandef;
	struct cfg80211_bss *bss = NULL;
	u8 *ie = NULL;
	size_t payload_len;
	u16 tlv_type;
	u16 tlv_value_len;
	const struct qlink_tlv_hdr *tlv;
	const u8 *rsp_ies = NULL;
	size_t rsp_ies_len = 0;

	if (unlikely(len < sizeof(*join_info))) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       vif->mac->macid, vif->vifid, len,
		       sizeof(struct qlink_event_bss_join));
		return -EINVAL;
	}

	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
		pr_err("VIF%u.%u: BSS_JOIN event when not in STA mode\n",
		       vif->mac->macid, vif->vifid);
		return -EPROTO;
	}

	pr_debug("VIF%u.%u: BSSID:%pM chan:%u status:%u\n",
		 vif->mac->macid, vif->vifid, join_info->bssid,
		 le16_to_cpu(join_info->chan.chan.center_freq), status);

	if (status != WLAN_STATUS_SUCCESS)
		goto done;

	qlink_chandef_q2cfg(wiphy, &join_info->chan, &chandef);
	if (!cfg80211_chandef_valid(&chandef)) {
		pr_warn("MAC%u.%u: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
			vif->mac->macid, vif->vifid,
			chandef.chan ? chandef.chan->center_freq : 0,
			chandef.center_freq1,
			chandef.center_freq2,
			chandef.width);
		status = WLAN_STATUS_UNSPECIFIED_FAILURE;
		goto done;
	}

	bss = cfg80211_get_bss(wiphy, chandef.chan, join_info->bssid,
			       NULL, 0, IEEE80211_BSS_TYPE_ESS,
			       IEEE80211_PRIVACY_ANY);
	if (!bss) {
		pr_warn("VIF%u.%u: add missing BSS:%pM chan:%u\n",
			vif->mac->macid, vif->vifid,
			join_info->bssid, chandef.chan->hw_value);

		if (!vif->wdev.ssid_len) {
			pr_warn("VIF%u.%u: SSID unknown for BSS:%pM\n",
				vif->mac->macid, vif->vifid,
				join_info->bssid);
			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
			goto done;
		}

		ie = kzalloc(2 + vif->wdev.ssid_len, GFP_KERNEL);
		if (!ie) {
			pr_warn("VIF%u.%u: IE alloc failed for BSS:%pM\n",
				vif->mac->macid, vif->vifid,
				join_info->bssid);
			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
			goto done;
		}

		ie[0] = WLAN_EID_SSID;
		ie[1] = vif->wdev.ssid_len;
		memcpy(ie + 2, vif->wdev.ssid, vif->wdev.ssid_len);

		bss = cfg80211_inform_bss(wiphy, chandef.chan,
					  CFG80211_BSS_FTYPE_UNKNOWN,
					  join_info->bssid, 0,
					  WLAN_CAPABILITY_ESS, 100,
					  ie, 2 + vif->wdev.ssid_len,
					  0, GFP_KERNEL);
		if (!bss) {
			pr_warn("VIF%u.%u: can't connect to unknown BSS: %pM\n",
				vif->mac->macid, vif->vifid,
				join_info->bssid);
			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
			goto done;
		}
	}

	payload_len = len - sizeof(*join_info);

	qlink_for_each_tlv(tlv, join_info->ies, payload_len) {
		tlv_type = le16_to_cpu(tlv->type);
		tlv_value_len = le16_to_cpu(tlv->len);

		if (tlv_type == QTN_TLV_ID_IE_SET) {
			const struct qlink_tlv_ie_set *ie_set;
			unsigned int ie_len;

			if (tlv_value_len <
			    (sizeof(*ie_set) - sizeof(ie_set->hdr))) {
				pr_warn("invalid IE_SET TLV\n");
				status = WLAN_STATUS_UNSPECIFIED_FAILURE;
				goto done;
			}

			ie_set = (const struct qlink_tlv_ie_set *)tlv;
			ie_len = tlv_value_len -
				(sizeof(*ie_set) - sizeof(ie_set->hdr));

			switch (ie_set->type) {
			case QLINK_IE_SET_ASSOC_RESP:
				if (ie_len) {
					rsp_ies = ie_set->ie_data;
					rsp_ies_len = ie_len;
				}
				break;
			default:
				pr_warn("unexpected IE type: %u\n",
					ie_set->type);
				break;
			}
		}
	}

	if (!qlink_tlv_parsing_ok(tlv, join_info->ies, payload_len))
		pr_warn("Malformed TLV buffer\n");
done:
	cfg80211_connect_result(vif->netdev, join_info->bssid, NULL, 0, rsp_ies,
				rsp_ies_len, status, GFP_KERNEL);
	if (bss) {
		if (!ether_addr_equal(vif->bssid, join_info->bssid))
			ether_addr_copy(vif->bssid, join_info->bssid);
		cfg80211_put_bss(wiphy, bss);
	}

	if (status == WLAN_STATUS_SUCCESS)
		netif_carrier_on(vif->netdev);

	kfree(ie);
	return 0;
}

static int
qtnf_event_handle_bss_leave(struct qtnf_vif *vif,
			    const struct qlink_event_bss_leave *leave_info,
			    u16 len)
{
	if (unlikely(len < sizeof(*leave_info))) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       vif->mac->macid, vif->vifid, len,
		       sizeof(struct qlink_event_bss_leave));
		return -EINVAL;
	}

	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
		pr_err("VIF%u.%u: BSS_LEAVE event when not in STA mode\n",
		       vif->mac->macid, vif->vifid);
		return -EPROTO;
	}

	pr_debug("VIF%u.%u: disconnected\n", vif->mac->macid, vif->vifid);

	cfg80211_disconnected(vif->netdev, le16_to_cpu(leave_info->reason),
			      NULL, 0, 0, GFP_KERNEL);
	netif_carrier_off(vif->netdev);

	return 0;
}

static int
qtnf_event_handle_mgmt_received(struct qtnf_vif *vif,
				const struct qlink_event_rxmgmt *rxmgmt,
				u16 len)
{
	const size_t min_len = sizeof(*rxmgmt) +
			       sizeof(struct ieee80211_hdr_3addr);
	const struct ieee80211_hdr_3addr *frame = (void *)rxmgmt->frame_data;
	const u16 frame_len = len - sizeof(*rxmgmt);
	enum nl80211_rxmgmt_flags flags = 0;

	if (unlikely(len < min_len)) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       vif->mac->macid, vif->vifid, len, min_len);
		return -EINVAL;
	}

	if (le32_to_cpu(rxmgmt->flags) & QLINK_RXMGMT_FLAG_ANSWERED)
		flags |= NL80211_RXMGMT_FLAG_ANSWERED;

	pr_debug("%s LEN:%u FC:%.4X SA:%pM\n", vif->netdev->name, frame_len,
		 le16_to_cpu(frame->frame_control), frame->addr2);

	cfg80211_rx_mgmt(&vif->wdev, le32_to_cpu(rxmgmt->freq), rxmgmt->sig_dbm,
			 rxmgmt->frame_data, frame_len, flags);

	return 0;
}

static int
qtnf_event_handle_scan_results(struct qtnf_vif *vif,
			       const struct qlink_event_scan_result *sr,
			       u16 len)
{
	struct cfg80211_bss *bss;
	struct ieee80211_channel *channel;
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	enum cfg80211_bss_frame_type frame_type = CFG80211_BSS_FTYPE_UNKNOWN;
	size_t payload_len;
	u16 tlv_type;
	u16 tlv_value_len;
	const struct qlink_tlv_hdr *tlv;
	const u8 *ies = NULL;
	size_t ies_len = 0;

	if (len < sizeof(*sr)) {
		pr_err("VIF%u.%u: payload is too short\n", vif->mac->macid,
		       vif->vifid);
		return -EINVAL;
	}

	channel = ieee80211_get_channel(wiphy, le16_to_cpu(sr->freq));
	if (!channel) {
		pr_err("VIF%u.%u: channel at %u MHz not found\n",
		       vif->mac->macid, vif->vifid, le16_to_cpu(sr->freq));
		return -EINVAL;
	}

	payload_len = len - sizeof(*sr);

	qlink_for_each_tlv(tlv, sr->payload, payload_len) {
		tlv_type = le16_to_cpu(tlv->type);
		tlv_value_len = le16_to_cpu(tlv->len);

		if (tlv_type == QTN_TLV_ID_IE_SET) {
			const struct qlink_tlv_ie_set *ie_set;
			unsigned int ie_len;

			if (tlv_value_len <
			    (sizeof(*ie_set) - sizeof(ie_set->hdr)))
				return -EINVAL;

			ie_set = (const struct qlink_tlv_ie_set *)tlv;
			ie_len = tlv_value_len -
				(sizeof(*ie_set) - sizeof(ie_set->hdr));

			switch (ie_set->type) {
			case QLINK_IE_SET_BEACON_IES:
				frame_type = CFG80211_BSS_FTYPE_BEACON;
				break;
			case QLINK_IE_SET_PROBE_RESP_IES:
				frame_type = CFG80211_BSS_FTYPE_PRESP;
				break;
			default:
				frame_type = CFG80211_BSS_FTYPE_UNKNOWN;
			}

			if (ie_len) {
				ies = ie_set->ie_data;
				ies_len = ie_len;
			}
		}
	}

	if (!qlink_tlv_parsing_ok(tlv, sr->payload, payload_len))
		return -EINVAL;

	bss = cfg80211_inform_bss(wiphy, channel, frame_type,
				  sr->bssid, get_unaligned_le64(&sr->tsf),
				  le16_to_cpu(sr->capab),
				  le16_to_cpu(sr->bintval), ies, ies_len,
				  DBM_TO_MBM(sr->sig_dbm), GFP_KERNEL);
	if (!bss)
		return -ENOMEM;

	cfg80211_put_bss(wiphy, bss);

	return 0;
}

static int
qtnf_event_handle_scan_complete(struct qtnf_wmac *mac,
				const struct qlink_event_scan_complete *status,
				u16 len)
{
	if (len < sizeof(*status)) {
		pr_err("MAC%u: payload is too short\n", mac->macid);
		return -EINVAL;
	}

	qtnf_scan_done(mac, le32_to_cpu(status->flags) & QLINK_SCAN_ABORTED);

	return 0;
}

static int
qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
			      const struct qlink_event_freq_change *data,
			      u16 len)
{
	struct wiphy *wiphy = priv_to_wiphy(mac);
	struct cfg80211_chan_def chandef;
	struct qtnf_vif *vif;
	int i;

	if (len < sizeof(*data)) {
		pr_err("MAC%u: payload is too short\n", mac->macid);
		return -EINVAL;
	}

	if (!wiphy->registered)
		return 0;

	qlink_chandef_q2cfg(wiphy, &data->chan, &chandef);

	if (!cfg80211_chandef_valid(&chandef)) {
		pr_err("MAC%u: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
		       mac->macid, chandef.chan->center_freq,
		       chandef.center_freq1, chandef.center_freq2,
		       chandef.width);
		return -EINVAL;
	}

	pr_debug("MAC%d: new channel ieee=%u freq1=%u freq2=%u bw=%u\n",
		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
		 chandef.center_freq2, chandef.width);

	for (i = 0; i < QTNF_MAX_INTF; i++) {
		vif = &mac->iflist[i];

		if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
			continue;

		if (vif->wdev.iftype == NL80211_IFTYPE_STATION &&
		    !vif->wdev.current_bss)
			continue;

		if (!vif->netdev)
			continue;

		mutex_lock(&vif->wdev.mtx);
		cfg80211_ch_switch_notify(vif->netdev, &chandef);
		mutex_unlock(&vif->wdev.mtx);
	}

	return 0;
}

static int qtnf_event_handle_radar(struct qtnf_vif *vif,
				   const struct qlink_event_radar *ev,
				   u16 len)
{
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	struct cfg80211_chan_def chandef;

	if (len < sizeof(*ev)) {
		pr_err("MAC%u: payload is too short\n", vif->mac->macid);
		return -EINVAL;
	}

	if (!wiphy->registered || !vif->netdev)
		return 0;

	qlink_chandef_q2cfg(wiphy, &ev->chan, &chandef);

	if (!cfg80211_chandef_valid(&chandef)) {
		pr_err("MAC%u: bad channel f1=%u f2=%u bw=%u\n",
		       vif->mac->macid,
		       chandef.center_freq1, chandef.center_freq2,
		       chandef.width);
		return -EINVAL;
	}

	pr_info("%s: radar event=%u f1=%u f2=%u bw=%u\n",
		vif->netdev->name, ev->event,
		chandef.center_freq1, chandef.center_freq2,
		chandef.width);

	switch (ev->event) {
	case QLINK_RADAR_DETECTED:
		cfg80211_radar_event(wiphy, &chandef, GFP_KERNEL);
		break;
	case QLINK_RADAR_CAC_FINISHED:
		if (!vif->wdev.cac_started)
			break;

		cfg80211_cac_event(vif->netdev, &chandef,
				   NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
		break;
	case QLINK_RADAR_CAC_ABORTED:
		if (!vif->wdev.cac_started)
			break;

		cfg80211_cac_event(vif->netdev, &chandef,
				   NL80211_RADAR_CAC_ABORTED, GFP_KERNEL);
		break;
	case QLINK_RADAR_CAC_STARTED:
		if (vif->wdev.cac_started)
			break;

		if (!wiphy_ext_feature_isset(wiphy,
					     NL80211_EXT_FEATURE_DFS_OFFLOAD))
			break;

		cfg80211_cac_event(vif->netdev, &chandef,
				   NL80211_RADAR_CAC_STARTED, GFP_KERNEL);
		break;
	default:
		pr_warn("%s: unhandled radar event %u\n",
			vif->netdev->name, ev->event);
		break;
	}

	return 0;
}

static int
qtnf_event_handle_external_auth(struct qtnf_vif *vif,
				const struct qlink_event_external_auth *ev,
				u16 len)
{
	struct cfg80211_external_auth_params auth = {0};
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	int ret;

	if (len < sizeof(*ev)) {
		pr_err("MAC%u: payload is too short\n", vif->mac->macid);
		return -EINVAL;
	}

	if (!wiphy->registered || !vif->netdev)
		return 0;

	if (ev->ssid_len) {
		memcpy(auth.ssid.ssid, ev->ssid, ev->ssid_len);
		auth.ssid.ssid_len = ev->ssid_len;
	}

	auth.key_mgmt_suite = le32_to_cpu(ev->akm_suite);
	ether_addr_copy(auth.bssid, ev->bssid);
	auth.action = ev->action;

	pr_debug("%s: external SAE processing: bss=%pM action=%u akm=%u\n",
		 vif->netdev->name, auth.bssid, auth.action,
		 auth.key_mgmt_suite);

	ret = cfg80211_external_auth_request(vif->netdev, &auth, GFP_KERNEL);
	if (ret)
		pr_warn("failed to offload external auth request\n");

	return ret;
}

static int
qtnf_event_handle_mic_failure(struct qtnf_vif *vif,
			      const struct qlink_event_mic_failure *mic_ev,
			      u16 len)
{
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	u8 pairwise;

	if (len < sizeof(*mic_ev)) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       vif->mac->macid, vif->vifid, len,
		       sizeof(struct qlink_event_mic_failure));
		return -EINVAL;
	}

	if (!wiphy->registered || !vif->netdev)
		return 0;

	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
		pr_err("VIF%u.%u: MIC_FAILURE event when not in STA mode\n",
		       vif->mac->macid, vif->vifid);
		return -EPROTO;
	}

	pairwise = mic_ev->pairwise ?
		NL80211_KEYTYPE_PAIRWISE : NL80211_KEYTYPE_GROUP;

	pr_info("%s: MIC error: src=%pM key_index=%u pairwise=%u\n",
		vif->netdev->name, mic_ev->src, mic_ev->key_index, pairwise);

	cfg80211_michael_mic_failure(vif->netdev, mic_ev->src, pairwise,
				     mic_ev->key_index, NULL, GFP_KERNEL);

	return 0;
}

static int
qtnf_event_handle_update_owe(struct qtnf_vif *vif,
			     const struct qlink_event_update_owe *owe_ev,
			     u16 len)
{
	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
	struct cfg80211_update_owe_info owe_info = {};
	const u16 ie_len = len - sizeof(*owe_ev);
	u8 *ie;

	if (len < sizeof(*owe_ev)) {
		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
		       vif->mac->macid, vif->vifid, len,
		       sizeof(struct qlink_event_update_owe));
		return -EINVAL;
	}

	if (!wiphy->registered || !vif->netdev)
		return 0;

	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
		pr_err("VIF%u.%u: UPDATE_OWE event when not in AP mode\n",
		       vif->mac->macid, vif->vifid);
		return -EPROTO;
	}

	ie = kzalloc(ie_len, GFP_KERNEL);
	if (!ie)
		return -ENOMEM;

	memcpy(owe_info.peer, owe_ev->peer, ETH_ALEN);
	memcpy(ie, owe_ev->ies, ie_len);
	owe_info.ie_len = ie_len;
	owe_info.ie = ie;

	pr_info("%s: external OWE processing: peer=%pM\n",
		vif->netdev->name, owe_ev->peer);

	cfg80211_update_owe_info_event(vif->netdev, &owe_info, GFP_KERNEL);
	kfree(ie);

	return 0;
}

static int qtnf_event_parse(struct qtnf_wmac *mac,
			    const struct sk_buff *event_skb)
{
	const struct qlink_event *event;
	struct qtnf_vif *vif = NULL;
	int ret = -1;
	u16 event_id;
	u16 event_len;
	u8 vifid;

	event = (const struct qlink_event *)event_skb->data;
	event_id = le16_to_cpu(event->event_id);
	event_len = le16_to_cpu(event->mhdr.len);

	if (event->vifid >= QTNF_MAX_INTF) {
		pr_err("invalid vif(%u)\n", event->vifid);
		return -EINVAL;
	}

	vifid = array_index_nospec(event->vifid, QTNF_MAX_INTF);
	vif = &mac->iflist[vifid];

	switch (event_id) {
	case QLINK_EVENT_STA_ASSOCIATED:
		ret = qtnf_event_handle_sta_assoc(mac, vif, (const void *)event,
						  event_len);
		break;
	case QLINK_EVENT_STA_DEAUTH:
		ret = qtnf_event_handle_sta_deauth(mac, vif,
						   (const void *)event,
						   event_len);
		break;
	case QLINK_EVENT_MGMT_RECEIVED:
		ret = qtnf_event_handle_mgmt_received(vif, (const void *)event,
						      event_len);
		break;
	case QLINK_EVENT_SCAN_RESULTS:
		ret = qtnf_event_handle_scan_results(vif, (const void *)event,
						     event_len);
		break;
	case QLINK_EVENT_SCAN_COMPLETE:
		ret = qtnf_event_handle_scan_complete(mac, (const void *)event,
						      event_len);
		break;
	case QLINK_EVENT_BSS_JOIN:
		ret = qtnf_event_handle_bss_join(vif, (const void *)event,
						 event_len);
		break;
	case QLINK_EVENT_BSS_LEAVE:
		ret = qtnf_event_handle_bss_leave(vif, (const void *)event,
						  event_len);
		break;
	case QLINK_EVENT_FREQ_CHANGE:
		ret = qtnf_event_handle_freq_change(mac, (const void *)event,
						    event_len);
		break;
	case QLINK_EVENT_RADAR:
		ret = qtnf_event_handle_radar(vif, (const void *)event,
					      event_len);
		break;
	case QLINK_EVENT_EXTERNAL_AUTH:
		ret = qtnf_event_handle_external_auth(vif, (const void *)event,
						      event_len);
		break;
	case QLINK_EVENT_MIC_FAILURE:
		ret = qtnf_event_handle_mic_failure(vif, (const void *)event,
						    event_len);
		break;
	case QLINK_EVENT_UPDATE_OWE:
		ret = qtnf_event_handle_update_owe(vif, (const void *)event,
						   event_len);
		break;
	default:
		pr_warn("unknown event type: %x\n", event_id);
		break;
	}

	return ret;
}

static int qtnf_event_process_skb(struct qtnf_bus *bus,
				  const struct sk_buff *skb)
{
	const struct qlink_event *event;
	struct qtnf_wmac *mac;
	int res;

	if (unlikely(!skb || skb->len < sizeof(*event))) {
		pr_err("invalid event buffer\n");
		return -EINVAL;
	}

	event = (struct qlink_event *)skb->data;

	mac = qtnf_core_get_mac(bus, event->macid);

	pr_debug("new event id:%x len:%u mac:%u vif:%u\n",
		 le16_to_cpu(event->event_id), le16_to_cpu(event->mhdr.len),
		 event->macid, event->vifid);

	if (unlikely(!mac))
		return -ENXIO;

	rtnl_lock();
	res = qtnf_event_parse(mac, skb);
	rtnl_unlock();

	return res;
}

void qtnf_event_work_handler(struct work_struct *work)
{
	struct qtnf_bus *bus = container_of(work, struct qtnf_bus, event_work);
	struct sk_buff_head *event_queue = &bus->trans.event_queue;
	struct sk_buff *current_event_skb = skb_dequeue(event_queue);

	while (current_event_skb) {
		qtnf_event_process_skb(bus, current_event_skb);
		dev_kfree_skb_any(current_event_skb);
		current_event_skb = skb_dequeue(event_queue);
	}
}