mac.c 175 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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
static u32
ath10k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
	int nss;

	for (nss = IEEE80211_HT_MCS_MASK_LEN - 1; nss >= 0; nss--)
		if (ht_mcs_mask[nss])
			return nss + 1;

	return 1;
}

static u32
ath10k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
	int nss;

	for (nss = NL80211_VHT_NSS_MAX - 1; nss >= 0; nss--)
		if (vht_mcs_mask[nss])
			return nss + 1;

	return 1;
}
156
157
158
159
160
161
162
163

/**********/
/* Crypto */
/**********/

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
164
			   const u8 *macaddr, u32 flags)
165
{
166
	struct ath10k *ar = arvif->ar;
167
168
169
170
171
	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
172
		.key_flags = flags,
173
174
175
		.macaddr = macaddr,
	};

Michal Kazior's avatar
Michal Kazior committed
176
177
	lockdep_assert_held(&arvif->ar->conf_mutex);

178
179
180
	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
181
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
182
183
184
185
186
187
188
189
190
191
		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;
192
	case WLAN_CIPHER_SUITE_AES_CMAC:
193
194
		WARN_ON(1);
		return -EINVAL;
195
	default:
196
		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
197
198
199
200
201
202
203
204
205
206
207
208
209
210
		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,
211
			      const u8 *macaddr, u32 flags)
212
213
214
{
	struct ath10k *ar = arvif->ar;
	int ret;
215
	unsigned long time_left;
216

Michal Kazior's avatar
Michal Kazior committed
217
218
	lockdep_assert_held(&ar->conf_mutex);

219
	reinit_completion(&ar->install_key_done);
220

221
	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
222
223
224
	if (ret)
		return ret;

225
226
	time_left = wait_for_completion_timeout(&ar->install_key_done, 3 * HZ);
	if (time_left == 0)
227
228
229
230
231
232
233
234
235
236
237
238
		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;
239
	u32 flags;
240
241
242
243
244
245
246
247
248
249
250
251
252

	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;
253
254
255
256

		flags = 0;
		flags |= WMI_KEY_PAIRWISE;

257
258
259
260
261
262
263
		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
					 addr, flags);
		if (ret)
			return ret;

		flags = 0;
		flags |= WMI_KEY_GROUP;
264
265

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
266
					 addr, flags);
267
268
269
		if (ret)
			return ret;

270
		spin_lock_bh(&ar->data_lock);
271
		peer->keys[i] = arvif->wep_keys[i];
272
		spin_unlock_bh(&ar->data_lock);
273
274
	}

275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
	/* 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;
	}

296
297
298
299
300
301
302
303
304
305
306
	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;
307
	u32 flags = 0;
308
309
310
311
312
313
314
315
316
317
318
319
320
321

	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;

322
		/* key flags are not required to delete the key */
323
		ret = ath10k_install_key(arvif, peer->keys[i],
324
					 DISABLE_KEY, addr, flags);
325
326
327
328
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
329
			ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
330
331
				    i, ret);

332
		spin_lock_bh(&ar->data_lock);
333
		peer->keys[i] = NULL;
334
		spin_unlock_bh(&ar->data_lock);
335
336
337
338
339
	}

	return first_errno;
}

Sujith Manoharan's avatar
Sujith Manoharan committed
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
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;
}

365
366
367
368
369
370
371
372
373
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;
374
	u32 flags = 0;
375
376
377
378
379
380
381
382
383
384
385

	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
386
					ether_addr_copy(addr, peer->addr);
387
388
389
390
391
392
393
394
395
396
397
398
					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;
399
		/* key flags are not required to delete the key */
400
		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
401
402
403
404
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
405
			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
406
				    addr, ret);
407
408
409
410
411
	}

	return first_errno;
}

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
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;
}

445
446
447
448
449
450
451
452
453
454
455
456
457
/*********************/
/* 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:
458
459
460
461
			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
				phymode = MODE_11B;
			else
				phymode = MODE_11G;
462
463
464
465
466
467
468
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
469
470
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
		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;
492
493
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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
		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
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
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;
}

591
592
static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
			      enum wmi_peer_type peer_type)
593
594
595
596
597
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

598
599
600
	if (ar->num_peers >= ar->max_num_peers)
		return -ENOBUFS;

601
	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
602
	if (ret) {
603
		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
604
			    addr, vdev_id, ret);
605
		return ret;
606
	}
607
608

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
609
	if (ret) {
610
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
611
			    addr, vdev_id, ret);
612
		return ret;
613
	}
614

615
	ar->num_peers++;
616
617
618
619

	return 0;
}

620
621
622
623
624
625
626
627
628
629
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) {
630
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
631
			    arvif->vdev_id, ret);
632
633
634
635
636
637
638
		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) {
639
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
640
			    arvif->vdev_id, ret);
641
642
643
644
645
646
647
		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) {
648
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
649
			    arvif->vdev_id, ret);
650
651
652
653
654
655
656
		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) {
657
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
658
			    arvif->vdev_id, ret);
659
660
661
662
663
664
		return ret;
	}

	return 0;
}

665
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
666
{
667
668
669
670
671
	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);
672
673
674
675
}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
676
677
678
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

679
680
681
682
683
	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

684
685
	vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
686
687
}

688
689
690
691
692
693
694
695
696
697
698
699
700
701
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;

702
703
	ar->num_peers--;

704
705
706
707
708
709
710
711
712
713
714
715
716
717
	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;

718
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
719
720
721
722
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
723
		ar->num_peers--;
724
725
726
727
	}
	spin_unlock_bh(&ar->data_lock);
}

728
729
730
731
732
733
734
735
736
737
738
739
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);
740
741

	ar->num_peers = 0;
742
	ar->num_stations = 0;
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
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;
}

777
778
779
780
/************************/
/* Interface management */
/************************/

781
782
783
784
785
786
787
788
789
790
791
792
793
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
794
795
796
797
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

798
799
800
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
Michal Kazior's avatar
Michal Kazior committed
801
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
}

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;
	}
}

819
820
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
821
	unsigned long time_left;
822

Michal Kazior's avatar
Michal Kazior committed
823
824
	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
825
826
827
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

828
829
830
	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
831
832
833
834
835
		return -ETIMEDOUT;

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
836
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
837
{
Michal Kazior's avatar
Michal Kazior committed
838
	struct cfg80211_chan_def *chandef = NULL;
839
	struct ieee80211_channel *channel = chandef->chan;
840
841
842
843
844
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
845
846
847
848
849
850
851
852
	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

853
854
	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
855
	arg.channel.band_center_freq1 = chandef->center_freq1;
856
857
858

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
859
	arg.channel.mode = chan_to_phymode(chandef);
860
861
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
862

863
	arg.channel.min_power = 0;
864
865
866
	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;
867

Michal Kazior's avatar
Michal Kazior committed
868
869
	reinit_completion(&ar->vdev_setup_done);

870
871
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
872
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
873
			    vdev_id, ret);
874
875
876
877
878
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
879
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
880
			    vdev_id, ret);
881
882
883
884
885
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
886
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
887
			    vdev_id, ret);
888
889
890
891
892
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

893
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
Michal Kazior's avatar
Michal Kazior committed
894
		   ar->monitor_vdev_id);
895
896
897
898
899
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
900
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
901
			    ar->monitor_vdev_id, ret);
902
903
904
905

	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
906
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
907
908
909
910
911
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

912
913
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
914
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
915
			    ar->monitor_vdev_id, ret);
916

Michal Kazior's avatar
Michal Kazior committed
917
918
	reinit_completion(&ar->vdev_setup_done);

919
920
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
921
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
922
			    ar->monitor_vdev_id, ret);
923
924
925

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
926
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
927
			    ar->monitor_vdev_id, ret);
928

929
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
Michal Kazior's avatar
Michal Kazior committed
930
		   ar->monitor_vdev_id);
931
932
933
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
934
static int ath10k_monitor_vdev_create(struct ath10k *ar)
935
936
937
938
939
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

Ben Greear's avatar
Ben Greear committed
940
	if (ar->free_vdev_map == 0) {
941
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
942
943
944
		return -ENOMEM;
	}

Ben Greear's avatar
Ben Greear committed
945
	bit = __ffs64(ar->free_vdev_map);
Ben Greear's avatar
Ben Greear committed
946

Ben Greear's avatar
Ben Greear committed
947
	ar->monitor_vdev_id = bit;
948
949
950
951
952

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
953
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
954
			    ar->monitor_vdev_id, ret);
Ben Greear's avatar
Ben Greear committed
955
		return ret;
956
957
	}

Ben Greear's avatar
Ben Greear committed
958
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
959
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
960
961
962
963
964
		   ar->monitor_vdev_id);

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
965
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
966
967
968
969
970
971
972
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
973
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
974
			    ar->monitor_vdev_id, ret);
975
976
977
		return ret;
	}

Ben Greear's avatar
Ben Greear committed
978
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
979

980
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
981
982
983
984
		   ar->monitor_vdev_id);
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
985
986
987
988
989
990
991
992
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
993
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
Michal Kazior's avatar
Michal Kazior committed
994
995
996
997
998
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
999
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
Michal Kazior's avatar
Michal Kazior committed
1000
1001
1002
1003
1004
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
1005
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
Michal Kazior's avatar
Michal Kazior committed
1006
1007
1008
1009

	return 0;
}

1010
static int ath10k_monitor_stop(struct ath10k *ar)
Michal Kazior's avatar
Michal Kazior committed
1011
1012
1013
1014
1015
1016
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
1017
	if (ret) {
1018
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
1019
1020
		return ret;
	}
Michal Kazior's avatar
Michal Kazior committed
1021
1022

	ret = ath10k_monitor_vdev_delete(ar);
1023
	if (ret) {
1024
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
1025
1026
		return ret;
	}
Michal Kazior's avatar
Michal Kazior committed
1027
1028

	ar->monitor_started = false;
1029
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
1030
1031
1032
1033

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
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
1067
1068
1069
1070
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 ||
	       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;
}

1071
1072
static int ath10k_monitor_recalc(struct ath10k *ar)
{
Michal Kazior's avatar
Michal Kazior committed
1073
1074
1075
	bool needed;
	bool allowed;
	int ret;
1076
1077
1078

	lockdep_assert_held(&ar->conf_mutex);

Michal Kazior's avatar
Michal Kazior committed
1079
1080
	needed = ath10k_mac_monitor_vdev_is_needed(ar);
	allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
1081
1082

	ath10k_dbg(ar, ATH10K_DBG_MAC,
Michal Kazior's avatar
Michal Kazior committed
1083
1084
		   "mac monitor recalc started? %d needed? %d allowed? %d\n",
		   ar->monitor_started, needed, allowed);
1085

Michal Kazior's avatar
Michal Kazior committed
1086
1087
1088
1089
1090
1091
1092
1093
1094
	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 */
		}
1095

Michal Kazior's avatar
Michal Kazior committed
1096
1097
		return -EPERM;
	}
1098

Michal Kazior's avatar
Michal Kazior committed
1099
	if (needed == ar->monitor_started)
1100
1101
		return 0;

Michal Kazior's avatar
Michal Kazior committed
1102
	if (needed)
1103
		return ath10k_monitor_start(ar);
Michal Kazior's avatar
Michal Kazior committed
1104
1105
	else
		return ath10k_monitor_stop(ar);
Michal Kazior's avatar
Michal Kazior committed
1106
1107
}

1108
1109
1110
1111
1112
1113
1114
1115
1116
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;

1117
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1118
1119
1120
1121

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1122
1123
1124
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1125
1126
1127
1128
1129

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

1130
1131
1132
1133
1134
1135
1136
1137
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1138
	ret = ath10k_monitor_recalc(ar);
1139
	if (ret) {
1140
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1141
1142
1143
1144
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1145
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
		   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
1160
	ath10k_monitor_stop(ar);
1161

1162
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1163
1164
1165
1166

	return 0;
}

Michal Kazior's avatar
Michal Kazior committed
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
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;
}

1188
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1189
1190
1191
1192
1193
1194
1195
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

Michal Kazior's avatar
Michal Kazior committed
1196
	if (!ath10k_mac_has_radar_enabled(ar))
1197
1198
		return;

1199
	if (ar->num_started_vdevs > 0)
1200
1201
1202
1203
1204
1205
1206
1207
1208
		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.
		 */
1209
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1210
1211
1212
1213
		ieee80211_radar_detected(ar->hw);
	}
}

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
1243
1244
1245
1246
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
1247
1248
1249
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
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
1281
1282
1283
1284
{
	struct ath10k *ar = arvif->ar;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	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;
	}

1285
	ath10k_dbg(ar, ATH10K_DBG_MAC,
Michal Kazior's avatar
Michal Kazior committed
1286
1287
1288
1289
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

1290
1291
1292
1293
1294
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

Michal Kazior's avatar
Michal Kazior committed
1295
	if (ret) {
1296
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
Michal Kazior's avatar
Michal Kazior committed
1297
1298
1299
1300
1301
1302
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1303
1304
1305
		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
1306
1307
1308
		return ret;
	}

1309
1310
1311
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

Michal Kazior's avatar
Michal Kazior committed
1312
1313
1314
	return ret;
}

Michal Kazior's avatar
Michal Kazior committed
1315
1316
static int ath10k_vdev_start(struct ath10k_vif *arvif,
			     const struct cfg80211_chan_def *def)
1317
{
Michal Kazior's avatar
Michal Kazior committed
1318
	return ath10k_vdev_start_restart(arvif, def, false);
1319
1320
}

Michal Kazior's avatar
Michal Kazior committed
1321
1322
static int ath10k_vdev_restart(struct ath10k_vif *arvif,
			       const struct cfg80211_chan_def *def)
Michal Kazior's avatar
Michal Kazior committed
1323
{
Michal Kazior's avatar
Michal Kazior committed
1324
	return ath10k_vdev_start_restart(arvif, def, true);
Michal Kazior's avatar
Michal Kazior committed
1325
1326
}

1327
1328
1329
1330
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
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;

1401
1402
1403
1404
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1405
1406
1407
1408
1409
1410
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
	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;

1450
1451
1452
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
	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
1471
1472
1473
1474
1475
1476
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
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;
}

1545
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1546
				     struct ieee80211_bss_conf *info)
1547
{
1548
	struct ath10k *ar = arvif->ar;
1549
1550
	int ret = 0;

Michal Kazior's avatar
Michal Kazior committed
1551
1552
	lockdep_assert_held(&arvif->ar->conf_mutex);

1553
	if (!info->enable_beacon) {
Michal Kazior's avatar
Michal Kazior committed
1554
1555
1556
1557
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
		if (ret)
			ath10k_warn(ar, "failed to down vdev_id %i: %d\n",
				    arvif->vdev_id, ret);
1558
1559
1560

		arvif->is_up = false;

1561
		spin_lock_bh(&arvif->ar->data_lock);
1562
		ath10k_mac_vif_beacon_free(arvif);
1563
1564
		spin_unlock_bh(&arvif->ar->data_lock);

1565
1566
1567
1568
1569
		return;
	}

	arvif->tx_seq_no = 0x1000;

1570
	arvif->aid = 0;
Kalle Valo's avatar
Kalle Valo committed
1571
	ether_addr_copy(arvif->bssid, info->bssid);
1572
1573
1574

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1575
	if (ret) {
1576
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1577
			    arvif->vdev_id, ret);
1578
1579
		return;
	}
1580
1581
1582

	arvif->is_up = true;

Michal Kazior's avatar
Michal Kazior committed
1583
1584
1585
1586
1587
1588
1589
	ret = ath10k_mac_vif_fix_hidden_ssid(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to fix hidden ssid for vdev %i, expect trouble: %d\n",
			    arvif->vdev_id, ret);
		return;
	}

1590
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1591
1592
1593
1594
1595
1596
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1597
	struct ath10k *ar = arvif->ar;
1598
	u32 vdev_param;
1599
1600
	int ret = 0;

Michal Kazior's avatar
Michal Kazior committed
1601
1602
	lockdep_assert_held(&arvif->ar->conf_mutex);

1603
	if (!info->ibss_joined) {
1604
		if (is_zero_ether_addr(arvif->bssid))
1605
1606
			return;

1607
		eth_zero_addr(arvif->bssid);
1608
1609
1610
1611

		return;
	}

1612
1613
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1614
1615
					ATH10K_DEFAULT_ATIM);
	if (ret)
1616
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1617
1618
1619
			    arvif->vdev_id, ret);
}

Michal Kazior's avatar
Michal Kazior committed
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
static int ath10k_mac_vif_recalc_ps_wake_threshold(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	u32 value;
	int ret;

	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_NEVER;
	else
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;

	param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit ps wake threshold %u on vdev %i: %d\n",
			    value, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_vif_recalc_ps_poll_count(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	u32 value;
	int ret;

	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_PSPOLL_COUNT_UAPSD;
	else
		value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;

	param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit ps poll count %u on vdev %i: %d\n",
			    value, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
static int ath10k_mac_ps_vif_count(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list)
		if (arvif->ps)
			num++;

	return num;
}

1685
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1686
{
1687
	struct ath10k *ar = arvif->ar;
1688
	struct ieee80211_vif *vif = arvif->vif;
1689
	struct ieee80211_conf *conf = &ar->hw->conf;
1690
1691
1692
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1693
	int ps_timeout;
1694
	bool enable_ps;
1695

Michal Kazior's avatar
Michal Kazior committed
1696
1697
	lockdep_assert_held(&arvif->ar->conf_mutex);

1698
1699
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1700

1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
	enable_ps = arvif->ps;

	if (enable_ps && ath10k_mac_ps_vif_count(ar) > 1 &&
	    !test_bit(ATH10K_FW_FEATURE_MULTI_VIF_PS_SUPPORT,
		      ar->fw_features)) {
		ath10k_warn(ar, "refusing to enable ps on vdev %i: not supported by fw\n",
			    arvif->vdev_id);
		enable_ps = false;
	}

1711
1712
1713
1714
1715
1716
1717
1718
	if (!arvif->is_started) {
		/* mac80211 can update vif powersave state while disconnected.
		 * Firmware doesn't behave nicely and consumes more power than
		 * necessary if PS is disabled on a non-started vdev. Hence
		 * force-enable PS for non-running vdevs.
		 */
		psmode = WMI_STA_PS_MODE_ENABLED;
	} else if (enable_ps) {
1719
1720
1721
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1722
1723
1724
1725
1726
1727
1728
		ps_timeout = conf->dynamic_ps_timeout;
		if (ps_timeout == 0) {
			/* Firmware doesn't like 0 */
			ps_timeout = ieee80211_tu_to_usec(
				vif->bss_conf.beacon_int) / 1000;
		}

1729
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1730
						  ps_timeout);
1731
		if (ret) {
1732
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1733
				    arvif->vdev_id, ret);
1734
			return ret;
1735
1736
1737
1738
1739
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1740
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
1741
1742
		   arvif->vdev_id, psmode ? "enable" : "disable");

1743
1744
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1745
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1746
			    psmode, arvif->vdev_id, ret);
1747
1748
1749
1750
		return ret;
	}

	return 0;
1751
1752
}

Michal Kazior's avatar
Michal Kazior committed
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774