mac.c 171 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/*
 * Copyright (c) 2005-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "mac.h"

#include <net/mac80211.h>
#include <linux/etherdevice.h>

Michal Kazior's avatar
Michal Kazior committed
23
#include "hif.h"
24
25
26
27
28
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
Kalle Valo's avatar
Kalle Valo committed
29
#include "testmode.h"
Michal Kazior's avatar
Michal Kazior committed
30
#include "wmi.h"
31
#include "wmi-tlv.h"
Michal Kazior's avatar
Michal Kazior committed
32
#include "wmi-ops.h"
33
#include "wow.h"
34

35
36
37
38
39
/*********/
/* Rates */
/*********/

static struct ieee80211_rate ath10k_rates[] = {
40
41
42
43
44
45
46
47
48
49
50
51
52
53
	{ .bitrate = 10,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_1M },
	{ .bitrate = 20,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_2M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_2M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_5_5M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_5_5M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_11M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_11M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
54
55
56
57
58
59
60
61
62

	{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
	{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
	{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
	{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
	{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
	{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
	{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
	{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
63
64
};

65
66
67
68
69
#define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4

#define ath10k_a_rates (ath10k_rates + ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - \
			     ATH10K_MAC_FIRST_OFDM_RATE_IDX)
70
71
72
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
static bool ath10k_mac_bitrate_is_cck(int bitrate)
{
	switch (bitrate) {
	case 10:
	case 20:
	case 55:
	case 110:
		return true;
	}

	return false;
}

static u8 ath10k_mac_bitrate_to_rate(int bitrate)
{
	return DIV_ROUND_UP(bitrate, 5) |
	       (ath10k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0);
}

92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
			     u8 hw_rate)
{
	const struct ieee80211_rate *rate;
	int i;

	for (i = 0; i < sband->n_bitrates; i++) {
		rate = &sband->bitrates[i];

		if (rate->hw_value == hw_rate)
			return i;
		else if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE &&
			 rate->hw_value_short == hw_rate)
			return i;
	}

	return 0;
}

111
112
113
114
115
116
117
118
119
120
121
122
u8 ath10k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
			     u32 bitrate)
{
	int i;

	for (i = 0; i < sband->n_bitrates; i++)
		if (sband->bitrates[i].bitrate == bitrate)
			return i;

	return 0;
}

123
124
125
126
127
128
129
130
131
132
static int ath10k_mac_get_max_vht_mcs_map(u16 mcs_map, int nss)
{
	switch ((mcs_map >> (2 * nss)) & 0x3) {
	case IEEE80211_VHT_MCS_SUPPORT_0_7: return BIT(8) - 1;
	case IEEE80211_VHT_MCS_SUPPORT_0_8: return BIT(9) - 1;
	case IEEE80211_VHT_MCS_SUPPORT_0_9: return BIT(10) - 1;
	}
	return 0;
}

133
134
135
136
137
138
139
/**********/
/* Crypto */
/**********/

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
140
			   const u8 *macaddr, u32 flags)
141
{
142
	struct ath10k *ar = arvif->ar;
143
144
145
146
147
	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
148
		.key_flags = flags,
149
150
151
		.macaddr = macaddr,
	};

Michal Kazior's avatar
Michal Kazior committed
152
153
	lockdep_assert_held(&arvif->ar->conf_mutex);

154
155
156
	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
157
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
158
159
160
161
162
163
164
165
166
167
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		arg.key_cipher = WMI_CIPHER_TKIP;
		arg.key_txmic_len = 8;
		arg.key_rxmic_len = 8;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		arg.key_cipher = WMI_CIPHER_WEP;
		break;
168
	case WLAN_CIPHER_SUITE_AES_CMAC:
169
170
		WARN_ON(1);
		return -EINVAL;
171
	default:
172
		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
173
174
175
176
177
178
179
180
181
182
183
184
185
186
		return -EOPNOTSUPP;
	}

	if (cmd == DISABLE_KEY) {
		arg.key_cipher = WMI_CIPHER_NONE;
		arg.key_data = NULL;
	}

	return ath10k_wmi_vdev_install_key(arvif->ar, &arg);
}

static int ath10k_install_key(struct ath10k_vif *arvif,
			      struct ieee80211_key_conf *key,
			      enum set_key_cmd cmd,
187
			      const u8 *macaddr, u32 flags)
188
189
190
{
	struct ath10k *ar = arvif->ar;
	int ret;
191
	unsigned long time_left;
192

Michal Kazior's avatar
Michal Kazior committed
193
194
	lockdep_assert_held(&ar->conf_mutex);

195
	reinit_completion(&ar->install_key_done);
196

197
	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
198
199
200
	if (ret)
		return ret;

201
202
	time_left = wait_for_completion_timeout(&ar->install_key_done, 3 * HZ);
	if (time_left == 0)
203
204
205
206
207
208
209
210
211
212
213
214
		return -ETIMEDOUT;

	return 0;
}

static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
					const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;
	int i;
215
	u32 flags;
216
217
218
219
220
221
222
223
224
225
226
227
228

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
		if (arvif->wep_keys[i] == NULL)
			continue;
229
230
231
232

		flags = 0;
		flags |= WMI_KEY_PAIRWISE;

233
234
235
236
237
238
239
		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
					 addr, flags);
		if (ret)
			return ret;

		flags = 0;
		flags |= WMI_KEY_GROUP;
240
241

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
242
					 addr, flags);
243
244
245
		if (ret)
			return ret;

246
		spin_lock_bh(&ar->data_lock);
247
		peer->keys[i] = arvif->wep_keys[i];
248
		spin_unlock_bh(&ar->data_lock);
249
250
	}

251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
	/* In some cases (notably with static WEP IBSS with multiple keys)
	 * multicast Tx becomes broken. Both pairwise and groupwise keys are
	 * installed already. Using WMI_KEY_TX_USAGE in different combinations
	 * didn't seem help. Using def_keyid vdev parameter seems to be
	 * effective so use that.
	 *
	 * FIXME: Revisit. Perhaps this can be done in a less hacky way.
	 */
	if (arvif->def_wep_key_idx == -1)
		return 0;

	ret = ath10k_wmi_vdev_set_param(arvif->ar,
					arvif->vdev_id,
					arvif->ar->wmi.vdev_param->def_keyid,
					arvif->def_wep_key_idx);
	if (ret) {
		ath10k_warn(ar, "failed to re-set def wpa key idxon vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

272
273
274
275
276
277
278
279
280
281
282
	return 0;
}

static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
				  const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int first_errno = 0;
	int ret;
	int i;
283
	u32 flags = 0;
284
285
286
287
288
289
290
291
292
293
294
295
296
297

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
		if (peer->keys[i] == NULL)
			continue;

298
		/* key flags are not required to delete the key */
299
		ret = ath10k_install_key(arvif, peer->keys[i],
300
					 DISABLE_KEY, addr, flags);
301
302
303
304
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
305
			ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
306
307
				    i, ret);

308
		spin_lock_bh(&ar->data_lock);
309
		peer->keys[i] = NULL;
310
		spin_unlock_bh(&ar->data_lock);
311
312
313
314
315
	}

	return first_errno;
}

Sujith Manoharan's avatar
Sujith Manoharan committed
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
bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
				    u8 keyidx)
{
	struct ath10k_peer *peer;
	int i;

	lockdep_assert_held(&ar->data_lock);

	/* We don't know which vdev this peer belongs to,
	 * since WMI doesn't give us that information.
	 *
	 * FIXME: multi-bss needs to be handled.
	 */
	peer = ath10k_peer_find(ar, 0, addr);
	if (!peer)
		return false;

	for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
		if (peer->keys[i] && peer->keys[i]->keyidx == keyidx)
			return true;
	}

	return false;
}

341
342
343
344
345
346
347
348
349
static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
				 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	u8 addr[ETH_ALEN];
	int first_errno = 0;
	int ret;
	int i;
350
	u32 flags = 0;
351
352
353
354
355
356
357
358
359
360
361

	lockdep_assert_held(&ar->conf_mutex);

	for (;;) {
		/* since ath10k_install_key we can't hold data_lock all the
		 * time, so we try to remove the keys incrementally */
		spin_lock_bh(&ar->data_lock);
		i = 0;
		list_for_each_entry(peer, &ar->peers, list) {
			for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
				if (peer->keys[i] == key) {
Kalle Valo's avatar
Kalle Valo committed
362
					ether_addr_copy(addr, peer->addr);
363
364
365
366
367
368
369
370
371
372
373
374
					peer->keys[i] = NULL;
					break;
				}
			}

			if (i < ARRAY_SIZE(peer->keys))
				break;
		}
		spin_unlock_bh(&ar->data_lock);

		if (i == ARRAY_SIZE(peer->keys))
			break;
375
		/* key flags are not required to delete the key */
376
		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
377
378
379
380
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
381
			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
382
				    addr, ret);
383
384
385
386
387
	}

	return first_errno;
}

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
static int ath10k_mac_vif_update_wep_key(struct ath10k_vif *arvif,
					 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(peer, &ar->peers, list) {
		if (!memcmp(peer->addr, arvif->vif->addr, ETH_ALEN))
			continue;

		if (!memcmp(peer->addr, arvif->bssid, ETH_ALEN))
			continue;

		if (peer->keys[key->keyidx] == key)
			continue;

		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vif vdev %i update key %i needs update\n",
			   arvif->vdev_id, key->keyidx);

		ret = ath10k_install_peer_wep_keys(arvif, peer->addr);
		if (ret) {
			ath10k_warn(ar, "failed to update wep keys on vdev %i for peer %pM: %d\n",
				    arvif->vdev_id, peer->addr, ret);
			return ret;
		}
	}

	return 0;
}

421
422
423
424
425
426
427
428
429
430
431
432
433
/*********************/
/* General utilities */
/*********************/

static inline enum wmi_phy_mode
chan_to_phymode(const struct cfg80211_chan_def *chandef)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (chandef->chan->band) {
	case IEEE80211_BAND_2GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
434
435
436
437
			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
				phymode = MODE_11B;
			else
				phymode = MODE_11G;
438
439
440
441
442
443
444
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
445
446
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
		case NL80211_CHAN_WIDTH_80:
		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	case IEEE80211_BAND_5GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
			phymode = MODE_11A;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NA_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NA_HT40;
			break;
		case NL80211_CHAN_WIDTH_80:
			phymode = MODE_11AC_VHT80;
			break;
468
469
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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
		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	default:
		break;
	}

	WARN_ON(phymode == MODE_UNKNOWN);
	return phymode;
}

static u8 ath10k_parse_mpdudensity(u8 mpdudensity)
{
/*
 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 *   0 for no restriction
 *   1 for 1/4 us
 *   2 for 1/2 us
 *   3 for 1 us
 *   4 for 2 us
 *   5 for 4 us
 *   6 for 8 us
 *   7 for 16 us
 */
	switch (mpdudensity) {
	case 0:
		return 0;
	case 1:
	case 2:
	case 3:
	/* Our lower layer calculations limit our precision to
	   1 microsecond */
		return 1;
	case 4:
		return 2;
	case 5:
		return 4;
	case 6:
		return 8;
	case 7:
		return 16;
	default:
		return 0;
	}
}

Michal Kazior's avatar
Michal Kazior committed
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
int ath10k_mac_vif_chan(struct ieee80211_vif *vif,
			struct cfg80211_chan_def *def)
{
	struct ieee80211_chanctx_conf *conf;

	rcu_read_lock();
	conf = rcu_dereference(vif->chanctx_conf);
	if (!conf) {
		rcu_read_unlock();
		return -ENOENT;
	}

	*def = conf->def;
	rcu_read_unlock();

	return 0;
}

static void ath10k_mac_num_chanctxs_iter(struct ieee80211_hw *hw,
					 struct ieee80211_chanctx_conf *conf,
					 void *data)
{
	int *num = data;

	(*num)++;
}

static int ath10k_mac_num_chanctxs(struct ath10k *ar)
{
	int num = 0;

	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_num_chanctxs_iter,
					    &num);

	return num;
}

static void
ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
				struct ieee80211_chanctx_conf *conf,
				void *data)
{
	struct cfg80211_chan_def **def = data;

	*def = &conf->def;
}

567
568
static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
			      enum wmi_peer_type peer_type)
569
570
571
572
573
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

574
575
576
	if (ar->num_peers >= ar->max_num_peers)
		return -ENOBUFS;

577
	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
578
	if (ret) {
579
		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
580
			    addr, vdev_id, ret);
581
		return ret;
582
	}
583
584

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
585
	if (ret) {
586
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
587
			    addr, vdev_id, ret);
588
		return ret;
589
	}
590

591
	ar->num_peers++;
592
593
594
595

	return 0;
}

596
597
598
599
600
601
602
603
604
605
static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	int ret;

	param = ar->wmi.pdev_param->sta_kickout_th;
	ret = ath10k_wmi_pdev_set_param(ar, param,
					ATH10K_KICKOUT_THRESHOLD);
	if (ret) {
606
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
607
			    arvif->vdev_id, ret);
608
609
610
611
612
613
614
		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MIN_IDLE);
	if (ret) {
615
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
616
			    arvif->vdev_id, ret);
617
618
619
620
621
622
623
		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MAX_IDLE);
	if (ret) {
624
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
625
			    arvif->vdev_id, ret);
626
627
628
629
630
631
632
		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
	if (ret) {
633
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
634
			    arvif->vdev_id, ret);
635
636
637
638
639
640
		return ret;
	}

	return 0;
}

641
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
642
{
643
644
645
646
647
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

	vdev_param = ar->wmi.vdev_param->rts_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
648
649
650
651
}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
652
653
654
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

655
656
657
658
659
	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

660
661
	vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
662
663
}

664
665
666
667
668
669
670
671
672
673
674
675
676
677
static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
	if (ret)
		return ret;

	ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
	if (ret)
		return ret;

678
679
	ar->num_peers--;

680
681
682
683
684
685
686
687
688
689
690
691
692
693
	return 0;
}

static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		if (peer->vdev_id != vdev_id)
			continue;

694
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
695
696
697
698
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
699
		ar->num_peers--;
700
701
702
703
	}
	spin_unlock_bh(&ar->data_lock);
}

704
705
706
707
708
709
710
711
712
713
714
715
static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
716
717

	ar->num_peers = 0;
718
	ar->num_stations = 0;
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
static int ath10k_mac_tdls_peer_update(struct ath10k *ar, u32 vdev_id,
				       struct ieee80211_sta *sta,
				       enum wmi_tdls_peer_state state)
{
	int ret;
	struct wmi_tdls_peer_update_cmd_arg arg = {};
	struct wmi_tdls_peer_capab_arg cap = {};
	struct wmi_channel_arg chan_arg = {};

	lockdep_assert_held(&ar->conf_mutex);

	arg.vdev_id = vdev_id;
	arg.peer_state = state;
	ether_addr_copy(arg.addr, sta->addr);

	cap.peer_max_sp = sta->max_sp;
	cap.peer_uapsd_queues = sta->uapsd_queues;

	if (state == WMI_TDLS_PEER_STATE_CONNECTED &&
	    !sta->tdls_initiator)
		cap.is_peer_responder = 1;

	ret = ath10k_wmi_tdls_peer_update(ar, &arg, &cap, &chan_arg);
	if (ret) {
		ath10k_warn(ar, "failed to update tdls peer %pM on vdev %i: %i\n",
			    arg.addr, vdev_id, ret);
		return ret;
	}

	return 0;
}

753
754
755
756
/************************/
/* Interface management */
/************************/

757
758
759
760
761
762
763
764
765
766
767
768
769
void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	if (!arvif->beacon)
		return;

	if (!arvif->beacon_buf)
		dma_unmap_single(ar->dev, ATH10K_SKB_CB(arvif->beacon)->paddr,
				 arvif->beacon->len, DMA_TO_DEVICE);

Michal Kazior's avatar
Michal Kazior committed
770
771
772
773
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

774
775
776
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
Michal Kazior's avatar
Michal Kazior committed
777
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
}

static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	ath10k_mac_vif_beacon_free(arvif);

	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}
}

795
796
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
797
	unsigned long time_left;
798

Michal Kazior's avatar
Michal Kazior committed
799
800
	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
801
802
803
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

804
805
806
	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
807
808
809
810
811
		return -ETIMEDOUT;

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
812
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
813
{
Michal Kazior's avatar
Michal Kazior committed
814
	struct cfg80211_chan_def *chandef = NULL;
815
	struct ieee80211_channel *channel = chandef->chan;
816
817
818
819
820
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
821
822
823
824
825
826
827
828
	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

829
830
	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
831
	arg.channel.band_center_freq1 = chandef->center_freq1;
832
833
834

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
835
	arg.channel.mode = chan_to_phymode(chandef);
836
837
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
838

839
	arg.channel.min_power = 0;
840
841
842
	arg.channel.max_power = channel->max_power * 2;
	arg.channel.max_reg_power = channel->max_reg_power * 2;
	arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
843

Michal Kazior's avatar
Michal Kazior committed
844
845
	reinit_completion(&ar->vdev_setup_done);

846
847
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
848
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
849
			    vdev_id, ret);
850
851
852
853
854
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
855
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
856
			    vdev_id, ret);
857
858
859
860
861
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
862
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
863
			    vdev_id, ret);
864
865
866
867
868
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

869
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
Michal Kazior's avatar
Michal Kazior committed
870
		   ar->monitor_vdev_id);
871
872
873
874
875
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
876
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
877
			    ar->monitor_vdev_id, ret);
878
879
880
881

	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
882
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
883
884
885
886
887
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

888
889
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
890
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
891
			    ar->monitor_vdev_id, ret);
892

Michal Kazior's avatar
Michal Kazior committed
893
894
	reinit_completion(&ar->vdev_setup_done);

895
896
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
897
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
898
			    ar->monitor_vdev_id, ret);
899
900
901

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
902
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
903
			    ar->monitor_vdev_id, ret);
904

905
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
Michal Kazior's avatar
Michal Kazior committed
906
		   ar->monitor_vdev_id);
907
908
909
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
910
static int ath10k_monitor_vdev_create(struct ath10k *ar)
911
912
913
914
915
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

Ben Greear's avatar
Ben Greear committed
916
	if (ar->free_vdev_map == 0) {
917
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
918
919
920
		return -ENOMEM;
	}

Ben Greear's avatar
Ben Greear committed
921
	bit = __ffs64(ar->free_vdev_map);
Ben Greear's avatar
Ben Greear committed
922

Ben Greear's avatar
Ben Greear committed
923
	ar->monitor_vdev_id = bit;
924
925
926
927
928

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
929
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
930
			    ar->monitor_vdev_id, ret);
Ben Greear's avatar
Ben Greear committed
931
		return ret;
932
933
	}

Ben Greear's avatar
Ben Greear committed
934
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
935
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
936
937
938
939
940
		   ar->monitor_vdev_id);

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
941
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
942
943
944
945
946
947
948
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
949
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
950
			    ar->monitor_vdev_id, ret);
951
952
953
		return ret;
	}

Ben Greear's avatar
Ben Greear committed
954
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
955

956
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
957
958
959
960
		   ar->monitor_vdev_id);
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
961
962
963
964
965
966
967
968
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
969
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
Michal Kazior's avatar
Michal Kazior committed
970
971
972
973
974
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
975
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
Michal Kazior's avatar
Michal Kazior committed
976
977
978
979
980
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
981
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
Michal Kazior's avatar
Michal Kazior committed
982
983
984
985

	return 0;
}

986
static int ath10k_monitor_stop(struct ath10k *ar)
Michal Kazior's avatar
Michal Kazior committed
987
988
989
990
991
992
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
993
	if (ret) {
994
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
995
996
		return ret;
	}
Michal Kazior's avatar
Michal Kazior committed
997
998

	ret = ath10k_monitor_vdev_delete(ar);
999
	if (ret) {
1000
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
1001
1002
		return ret;
	}
Michal Kazior's avatar
Michal Kazior committed
1003
1004

	ar->monitor_started = false;
1005
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
1006
1007
1008
1009

	return 0;
}

1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
static bool ath10k_mac_should_disable_promisc(struct ath10k *ar)
{
	struct ath10k_vif *arvif;

	if (!(ar->filter_flags & FIF_PROMISC_IN_BSS))
		return true;

	if (!ar->num_started_vdevs)
		return false;

	list_for_each_entry(arvif, &ar->arvifs, list)
		if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
			return false;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac disabling promiscuous mode because vdev is started\n");
	return true;
}

Michal Kazior's avatar
Michal Kazior committed
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
{
	int num_ctx;

	/* At least one chanctx is required to derive a channel to start
	 * monitor vdev on.
	 */
	num_ctx = ath10k_mac_num_chanctxs(ar);
	if (num_ctx == 0)
		return false;

	/* If there's already an existing special monitor interface then don't
	 * bother creating another monitor vdev.
	 */
	if (ar->monitor_arvif)
		return false;

	return ar->monitor ||
	       !ath10k_mac_should_disable_promisc(ar) ||
	       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
}

static bool ath10k_mac_monitor_vdev_is_allowed(struct ath10k *ar)
{
	int num_ctx;

	num_ctx = ath10k_mac_num_chanctxs(ar);

	/* FIXME: Current interface combinations and cfg80211/mac80211 code
	 * shouldn't allow this but make sure to prevent handling the following
	 * case anyway since multi-channel DFS hasn't been tested at all.
	 */
	if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags) && num_ctx > 1)
		return false;

	return true;
}

1067
1068
static int ath10k_monitor_recalc(struct ath10k *ar)
{
Michal Kazior's avatar
Michal Kazior committed
1069
1070
1071
	bool needed;
	bool allowed;
	int ret;
1072
1073
1074

	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
1075
1076
	needed = ath10k_mac_monitor_vdev_is_needed(ar);
	allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
1077
1078

	ath10k_dbg(ar, ATH10K_DBG_MAC,
Michal Kazior's avatar
Michal Kazior committed
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
		   "mac monitor recalc started? %d needed? %d allowed? %d\n",
		   ar->monitor_started, needed, allowed);

	if (WARN_ON(needed && !allowed)) {
		if (ar->monitor_started) {
			ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopping disallowed monitor\n");

			ret = ath10k_monitor_stop(ar);
			if (ret)
				ath10k_warn(ar, "failed to stop disallowed monitor: %d\n", ret);
				/* not serious */
		}
1091

Michal Kazior's avatar
Michal Kazior committed
1092
1093
1094
1095
		return -EPERM;
	}

	if (needed == ar->monitor_started)
1096
1097
		return 0;

Michal Kazior's avatar
Michal Kazior committed
1098
	if (needed)
1099
		return ath10k_monitor_start(ar);
Michal Kazior's avatar
Michal Kazior committed
1100
1101
	else
		return ath10k_monitor_stop(ar);
Michal Kazior's avatar
Michal Kazior committed
1102
1103
}

1104
1105
1106
1107
1108
1109
1110
1111
1112
static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param, rts_cts = 0;

	lockdep_assert_held(&ar->conf_mutex);

	vdev_param = ar->wmi.vdev_param->enable_rtscts;

1113
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1114
1115
1116
1117

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1118
1119
1120
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1121
1122
1123
1124
1125

	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					 rts_cts);
}

1126
1127
1128
1129
1130
1131
1132
1133
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1134
	ret = ath10k_monitor_recalc(ar);
1135
	if (ret) {
1136
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1137
1138
1139
1140
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1141
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
		   ar->monitor_vdev_id);

	return 0;
}

static int ath10k_stop_cac(struct ath10k *ar)
{
	lockdep_assert_held(&ar->conf_mutex);

	/* CAC is not running - do nothing */
	if (!test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags))
		return 0;

	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
Michal Kazior's avatar
Michal Kazior committed
1156
	ath10k_monitor_stop(ar);
1157

1158
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1159
1160
1161
1162

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
static void ath10k_mac_has_radar_iter(struct ieee80211_hw *hw,
				      struct ieee80211_chanctx_conf *conf,
				      void *data)
{
	bool *ret = data;

	if (!*ret && conf->radar_enabled)
		*ret = true;
}

static bool ath10k_mac_has_radar_enabled(struct ath10k *ar)
{
	bool has_radar = false;

	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_has_radar_iter,
					    &has_radar);

	return has_radar;
}

1184
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1185
1186
1187
1188
1189
1190
1191
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

Michal Kazior's avatar
Michal Kazior committed
1192
	if (!ath10k_mac_has_radar_enabled(ar))
1193
1194
		return;

1195
	if (ar->num_started_vdevs > 0)
1196
1197
1198
1199
1200
1201
1202
1203
1204
		return;

	ret = ath10k_start_cac(ar);
	if (ret) {
		/*
		 * Not possible to start CAC on current channel so starting
		 * radiation is not allowed, make this channel DFS_UNAVAILABLE
		 * by indicating that radar was detected.
		 */
1205
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1206
1207
1208
1209
		ieee80211_radar_detected(ar->hw);
	}
}

1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

	ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
	if (ret) {
		ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	WARN_ON(ar->num_started_vdevs == 0);

	if (ar->num_started_vdevs != 0) {
		ar->num_started_vdevs--;
		ath10k_recalc_radar_detection(ar);
	}

	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
1243
1244
1245
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif,
				     const struct cfg80211_chan_def *chandef,
				     bool restart)
Michal Kazior's avatar
Michal Kazior committed
1246
1247
1248
{
	struct ath10k *ar = arvif->ar;
	struct wmi_vdev_start_request_arg arg = {};
1249
	int ret = 0, ret2;
Michal Kazior's avatar
Michal Kazior committed
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

	arg.vdev_id = arvif->vdev_id;
	arg.dtim_period = arvif->dtim_period;
	arg.bcn_intval = arvif->beacon_interval;

	arg.channel.freq = chandef->chan->center_freq;
	arg.channel.band_center_freq1 = chandef->center_freq1;
	arg.channel.mode = chan_to_phymode(chandef);

	arg.channel.min_power = 0;
	arg.channel.max_power = chandef->chan->max_power * 2;
	arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
	arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain * 2;

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		arg.ssid = arvif->u.ap.ssid;
		arg.ssid_len = arvif->u.ap.ssid_len;
		arg.hidden_ssid = arvif->u.ap.hidden_ssid;

		/* For now allow DFS for AP mode */
		arg.channel.chan_radar =
			!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
	} else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
		arg.ssid = arvif->vif->bss_conf.ssid;
		arg.ssid_len = arvif->vif->bss_conf.ssid_len;
	}

1281
	ath10k_dbg(ar, ATH10K_DBG_MAC,
Michal Kazior's avatar
Michal Kazior committed
1282
1283
1284
1285
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

1286
1287
1288
1289
1290
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

Michal Kazior's avatar
Michal Kazior committed
1291
	if (ret) {
1292
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
Michal Kazior's avatar
Michal Kazior committed
1293
1294
1295
1296
1297
1298
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1299
1300
1301
		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
Michal Kazior's avatar
Michal Kazior committed
1302
1303
1304
		return ret;
	}

1305
1306
1307
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
	ret = ath10k_monitor_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "mac failed to recalc monitor for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
		ret2 = ath10k_vdev_stop(arvif);
		if (ret2)
			ath10k_warn(ar, "mac failed to stop vdev %i restart %d: %d\n",
				    arg.vdev_id, restart, ret2);
	}

Michal Kazior's avatar
Michal Kazior committed
1318
1319
1320
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
1321
1322
static int ath10k_vdev_start(struct ath10k_vif *arvif,
			     const struct cfg80211_chan_def *def)
1323
{
Michal Kazior's avatar
Michal Kazior committed
1324
	return ath10k_vdev_start_restart(arvif, def, false);
1325
1326
}

Michal Kazior's avatar
Michal Kazior committed
1327
1328
static int ath10k_vdev_restart(struct ath10k_vif *arvif,
			       const struct cfg80211_chan_def *def)
1329
{
Michal Kazior's avatar
Michal Kazior committed
1330
	return ath10k_vdev_start_restart(arvif, def, true);
1331
1332
}

1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif,
				       struct sk_buff *bcn)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_mgmt *mgmt;
	const u8 *p2p_ie;
	int ret;

	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

	if (arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
		return 0;

	mgmt = (void *)bcn->data;
	p2p_ie = cfg80211_find_vendor_ie(WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
					 mgmt->u.beacon.variable,
					 bcn->len - (mgmt->u.beacon.variable -
						     bcn->data));
	if (!p2p_ie)
		return -ENOENT;

	ret = ath10k_wmi_p2p_go_bcn_ie(ar, arvif->vdev_id, p2p_ie);
	if (ret) {
		ath10k_warn(ar, "failed to submit p2p go bcn ie for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_remove_vendor_ie(struct sk_buff *skb, unsigned int oui,
				       u8 oui_type, size_t ie_offset)
{
	size_t len;
	const u8 *next;
	const u8 *end;
	u8 *ie;

	if (WARN_ON(skb->len < ie_offset))
		return -EINVAL;

	ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
					   skb->data + ie_offset,
					   skb->len - ie_offset);
	if (!ie)
		return -ENOENT;

	len = ie[1] + 2;
	end = skb->data + skb->len;
	next = ie + len;

	if (WARN_ON(next > end))
		return -EINVAL;

	memmove(ie, next, end - next);
	skb_trim(skb, skb->len - len);

	return 0;
}

static int ath10k_mac_setup_bcn_tmpl(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_vif *vif = arvif->vif;
	struct ieee80211_mutable_offsets offs = {};
	struct sk_buff *bcn;
	int ret;

	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

1407
1408
1409
1410
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
	bcn = ieee80211_beacon_get_template(hw, vif, &offs);
	if (!bcn) {
		ath10k_warn(ar, "failed to get beacon template from mac80211\n");
		return -EPERM;
	}

	ret = ath10k_mac_setup_bcn_p2p_ie(arvif, bcn);
	if (ret) {
		ath10k_warn(ar, "failed to setup p2p go bcn ie: %d\n", ret);
		kfree_skb(bcn);
		return ret;
	}

	/* P2P IE is inserted by firmware automatically (as configured above)
	 * so remove it from the base beacon template to avoid duplicate P2P
	 * IEs in beacon frames.
	 */
	ath10k_mac_remove_vendor_ie(bcn, WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
				    offsetof(struct ieee80211_mgmt,
					     u.beacon.variable));

	ret = ath10k_wmi_bcn_tmpl(ar, arvif->vdev_id, offs.tim_offset, bcn, 0,
				  0, NULL, 0);
	kfree_skb(bcn);

	if (ret) {
		ath10k_warn(ar, "failed to submit beacon template command: %d\n",
			    ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_setup_prb_tmpl(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_vif *vif = arvif->vif;
	struct sk_buff *prb;
	int ret;

	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

1456
1457
1458
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
	prb = ieee80211_proberesp_get(hw, vif);
	if (!prb) {
		ath10k_warn(ar, "failed to get probe resp template from mac80211\n");
		return -EPERM;
	}

	ret = ath10k_wmi_prb_tmpl(ar, arvif->vdev_id, prb);
	kfree_skb(prb);

	if (ret) {
		ath10k_warn(ar, "failed to submit probe resp template command: %d\n",
			    ret);
		return ret;
	}

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
static int ath10k_mac_vif_fix_hidden_ssid(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def def;
	int ret;

	/* When originally vdev is started during assign_vif_chanctx() some
	 * information is missing, notably SSID. Firmware revisions with beacon
	 * offloading require the SSID to be provided during vdev (re)start to
	 * handle hidden SSID properly.
	 *
	 * Vdev restart must be done after vdev has been both started and
	 * upped. Otherwise some firmware revisions (at least 10.2) fail to
	 * deliver vdev restart response event causing timeouts during vdev
	 * syncing in ath10k.
	 *
	 * Note: The vdev down/up and template reinstallation could be skipped
	 * since only wmi-tlv firmware are known to have beacon offload and
	 * wmi-tlv doesn't seem to misbehave like 10.2 wrt vdev restart
	 * response delivery. It's probably more robust to keep it as is.
	 */
	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

	if (WARN_ON(!arvif->is_started))
		return -EINVAL;

	if (WARN_ON(!arvif->is_up))
		return -EINVAL;

	if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
		return -EINVAL;

	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
	if (ret) {
		ath10k_warn(ar, "failed to bring down ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	/* Vdev down reset beacon & presp templates. Reinstall them. Otherwise
	 * firmware will crash upon vdev up.
	 */

	ret = ath10k_mac_setup_bcn_tmpl(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to update beacon template: %d\n", ret);
		return ret;
	}

	ret = ath10k_mac_setup_prb_tmpl(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to update presp template: %d\n", ret);
		return ret;
	}

	ret = ath10k_vdev_restart(arvif, &def);
	if (ret) {
		ath10k_warn(ar, "failed to restart ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
	if (ret) {
		ath10k_warn(ar, "failed to bring up ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

1551
static void ath10k_control_beaconing(struct ath10k_vif *arvif,