mac.c 154.0 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>

M
Michal Kazior 已提交
23
#include "hif.h"
24 25 26 27 28
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
K
Kalle Valo 已提交
29
#include "testmode.h"
M
Michal Kazior 已提交
30 31
#include "wmi.h"
#include "wmi-ops.h"
32
#include "wow.h"
33

34 35 36 37 38
/*********/
/* Rates */
/*********/

static struct ieee80211_rate ath10k_rates[] = {
39 40 41 42 43 44 45 46 47 48 49 50 51 52
	{ .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 },
53 54 55 56 57 58 59 60 61

	{ .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 },
62 63
};

64 65 66 67 68
#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)
69 70 71
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

M
Michal Kazior 已提交
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
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);
}

91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
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;
}

110 111 112 113 114 115 116 117 118 119 120 121
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;
}

122 123 124 125 126 127 128
/**********/
/* Crypto */
/**********/

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
129
			   const u8 *macaddr, u32 flags)
130
{
131
	struct ath10k *ar = arvif->ar;
132 133 134 135 136
	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
137
		.key_flags = flags,
138 139 140
		.macaddr = macaddr,
	};

M
Michal Kazior 已提交
141 142
	lockdep_assert_held(&arvif->ar->conf_mutex);

143 144 145
	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
146
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
147 148 149 150 151 152 153 154 155 156
		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;
157
	case WLAN_CIPHER_SUITE_AES_CMAC:
158 159
		WARN_ON(1);
		return -EINVAL;
160
	default:
161
		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
162 163 164 165 166 167 168 169 170 171 172 173 174 175
		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,
176
			      const u8 *macaddr, u32 flags)
177 178 179 180
{
	struct ath10k *ar = arvif->ar;
	int ret;

M
Michal Kazior 已提交
181 182
	lockdep_assert_held(&ar->conf_mutex);

183
	reinit_completion(&ar->install_key_done);
184

185
	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ);
	if (ret == 0)
		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;
203
	u32 flags;
204 205 206 207 208 209 210 211 212 213 214 215 216

	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;
217 218 219 220

		flags = 0;
		flags |= WMI_KEY_PAIRWISE;

221 222
		/* set TX_USAGE flag for default key id */
		if (arvif->def_wep_key_idx == i)
223
			flags |= WMI_KEY_TX_USAGE;
224 225

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
226
					 addr, flags);
227 228 229
		if (ret)
			return ret;

230
		spin_lock_bh(&ar->data_lock);
231
		peer->keys[i] = arvif->wep_keys[i];
232
		spin_unlock_bh(&ar->data_lock);
233 234 235 236 237 238 239 240 241 242 243 244 245
	}

	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;
246
	u32 flags = 0;
247 248 249 250 251 252 253 254 255 256 257 258 259 260

	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;

261
		/* key flags are not required to delete the key */
262
		ret = ath10k_install_key(arvif, peer->keys[i],
263
					 DISABLE_KEY, addr, flags);
264 265 266 267
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
268
			ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
269 270
				    i, ret);

271
		spin_lock_bh(&ar->data_lock);
272
		peer->keys[i] = NULL;
273
		spin_unlock_bh(&ar->data_lock);
274 275 276 277 278
	}

	return first_errno;
}

S
Sujith Manoharan 已提交
279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
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;
}

304 305 306 307 308 309 310 311 312
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;
313
	u32 flags = 0;
314 315 316 317 318 319 320 321 322 323 324

	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) {
K
Kalle Valo 已提交
325
					ether_addr_copy(addr, peer->addr);
326 327 328 329 330 331 332 333 334 335 336 337
					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;
338
		/* key flags are not required to delete the key */
339
		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
340 341 342 343
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
344
			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
345
				    addr, ret);
346 347 348 349 350
	}

	return first_errno;
}

351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
static int ath10k_mac_vif_sta_fix_wep_key(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	enum nl80211_iftype iftype = arvif->vif->type;
	struct ieee80211_key_conf *key;
	u32 flags = 0;
	int num = 0;
	int i;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	if (iftype != NL80211_IFTYPE_STATION)
		return 0;

	for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
		if (arvif->wep_keys[i]) {
			key = arvif->wep_keys[i];
			++num;
		}
	}

	if (num != 1)
		return 0;

	flags |= WMI_KEY_PAIRWISE;
	flags |= WMI_KEY_TX_USAGE;

	ret = ath10k_install_key(arvif, key, SET_KEY, arvif->bssid, flags);
	if (ret) {
		ath10k_warn(ar, "failed to install key %i on vdev %i: %d\n",
			    key->keyidx, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421
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;
}

422 423 424 425 426 427 428 429 430 431 432 433 434
/*********************/
/* 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:
435 436 437 438
			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
				phymode = MODE_11B;
			else
				phymode = MODE_11G;
439 440 441 442 443 444 445
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
446 447
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468
		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;
469 470
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
		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;
	}
}

520 521
static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
			      enum wmi_peer_type peer_type)
522 523 524 525 526
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

527 528 529
	if (ar->num_peers >= ar->max_num_peers)
		return -ENOBUFS;

530
	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
531
	if (ret) {
532
		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
533
			    addr, vdev_id, ret);
534
		return ret;
535
	}
536 537

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
538
	if (ret) {
539
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
540
			    addr, vdev_id, ret);
541
		return ret;
542
	}
M
Michal Kazior 已提交
543

544
	ar->num_peers++;
545 546 547 548

	return 0;
}

549 550 551 552 553 554 555 556 557 558
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) {
559
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
560
			    arvif->vdev_id, ret);
561 562 563 564 565 566 567
		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) {
568
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
569
			    arvif->vdev_id, ret);
570 571 572 573 574 575 576
		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) {
577
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
578
			    arvif->vdev_id, ret);
579 580 581 582 583 584 585
		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) {
586
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
587
			    arvif->vdev_id, ret);
588 589 590 591 592 593
		return ret;
	}

	return 0;
}

594
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
595
{
596 597 598 599 600
	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);
601 602 603 604
}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
605 606 607
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

608 609 610 611 612
	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

613 614
	vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
615 616
}

617 618 619 620 621 622 623 624 625 626 627 628 629 630
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;

631 632
	ar->num_peers--;

633 634 635 636 637 638 639 640 641 642 643 644 645 646
	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;

647
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
648 649 650 651
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
652
		ar->num_peers--;
653 654 655 656
	}
	spin_unlock_bh(&ar->data_lock);
}

657 658 659 660 661 662 663 664 665 666 667 668
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);
M
Michal Kazior 已提交
669 670

	ar->num_peers = 0;
671
	ar->num_stations = 0;
672 673
}

674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
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;
}

706 707 708 709
/************************/
/* Interface management */
/************************/

710 711 712 713 714 715 716 717 718 719 720 721 722
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);

M
Michal Kazior 已提交
723 724 725 726
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

727 728 729
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
M
Michal Kazior 已提交
730
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
}

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;
	}
}

748 749 750 751
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	int ret;

M
Michal Kazior 已提交
752 753
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
754 755 756
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

757 758 759 760 761 762 763 764
	ret = wait_for_completion_timeout(&ar->vdev_setup_done,
					  ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

M
Michal Kazior 已提交
765
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
766
{
767 768
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
769 770 771 772 773 774 775
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
776
	arg.channel.band_center_freq1 = chandef->center_freq1;
777 778 779

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
780
	arg.channel.mode = chan_to_phymode(chandef);
781 782
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
783

784
	arg.channel.min_power = 0;
M
Michal Kazior 已提交
785 786 787
	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;
788

M
Michal Kazior 已提交
789 790
	reinit_completion(&ar->vdev_setup_done);

791 792
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
793
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
794
			    vdev_id, ret);
795 796 797 798 799
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
800
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
801
			    vdev_id, ret);
802 803 804 805 806
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
807
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
808
			    vdev_id, ret);
809 810 811 812 813
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

814
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
M
Michal Kazior 已提交
815
		   ar->monitor_vdev_id);
816 817 818 819 820
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
821
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
822
			    ar->monitor_vdev_id, ret);
823 824 825 826

	return ret;
}

M
Michal Kazior 已提交
827
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
828 829 830 831 832
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

833 834
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
835
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
836
			    ar->monitor_vdev_id, ret);
837

M
Michal Kazior 已提交
838 839
	reinit_completion(&ar->vdev_setup_done);

840 841
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
842
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
843
			    ar->monitor_vdev_id, ret);
844 845 846

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
847
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
848
			    ar->monitor_vdev_id, ret);
849

850
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
M
Michal Kazior 已提交
851
		   ar->monitor_vdev_id);
852 853 854
	return ret;
}

M
Michal Kazior 已提交
855
static int ath10k_monitor_vdev_create(struct ath10k *ar)
856 857 858 859 860
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

B
Ben Greear 已提交
861
	if (ar->free_vdev_map == 0) {
862
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
863 864 865
		return -ENOMEM;
	}

B
Ben Greear 已提交
866
	bit = __ffs64(ar->free_vdev_map);
B
Ben Greear 已提交
867

B
Ben Greear 已提交
868
	ar->monitor_vdev_id = bit;
869 870 871 872 873

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
874
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
875
			    ar->monitor_vdev_id, ret);
B
Ben Greear 已提交
876
		return ret;
877 878
	}

B
Ben Greear 已提交
879
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
880
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
881 882 883 884 885
		   ar->monitor_vdev_id);

	return 0;
}

M
Michal Kazior 已提交
886
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
887 888 889 890 891 892 893
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
894
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
895
			    ar->monitor_vdev_id, ret);
896 897 898
		return ret;
	}

B
Ben Greear 已提交
899
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
900

901
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
902 903 904 905
		   ar->monitor_vdev_id);
	return ret;
}

M
Michal Kazior 已提交
906 907 908 909 910 911 912 913
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
914
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
915 916 917 918 919
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
920
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
921 922 923 924 925
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
926
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
M
Michal Kazior 已提交
927 928 929 930

	return 0;
}

931
static int ath10k_monitor_stop(struct ath10k *ar)
M
Michal Kazior 已提交
932 933 934 935 936 937
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
938
	if (ret) {
939
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
940 941
		return ret;
	}
M
Michal Kazior 已提交
942 943

	ret = ath10k_monitor_vdev_delete(ar);
944
	if (ret) {
945
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
946 947
		return ret;
	}
M
Michal Kazior 已提交
948 949

	ar->monitor_started = false;
950
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
951 952 953 954

	return 0;
}

955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973
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;
}

974 975 976 977 978 979 980
static int ath10k_monitor_recalc(struct ath10k *ar)
{
	bool should_start;

	lockdep_assert_held(&ar->conf_mutex);

	should_start = ar->monitor ||
M
Michal Kazior 已提交
981
		       !ath10k_mac_should_disable_promisc(ar) ||
982 983 984 985 986 987 988 989 990 991 992
		       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac monitor recalc started? %d should? %d\n",
		   ar->monitor_started, should_start);

	if (should_start == ar->monitor_started)
		return 0;

	if (should_start)
		return ath10k_monitor_start(ar);
993 994

	return ath10k_monitor_stop(ar);
M
Michal Kazior 已提交
995 996
}

997 998 999 1000 1001 1002 1003 1004 1005
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;

1006
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1007 1008 1009 1010

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1011 1012 1013
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1014 1015 1016 1017 1018

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

1019 1020 1021 1022 1023 1024 1025 1026
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1027
	ret = ath10k_monitor_recalc(ar);
1028
	if (ret) {
1029
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1030 1031 1032 1033
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1034
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
		   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);
M
Michal Kazior 已提交
1049
	ath10k_monitor_stop(ar);
1050

1051
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1052 1053 1054 1055

	return 0;
}

1056
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1057 1058 1059 1060 1061 1062 1063
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

1064
	if (!ar->radar_enabled)
1065 1066
		return;

1067
	if (ar->num_started_vdevs > 0)
1068 1069 1070 1071 1072 1073 1074 1075 1076
		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.
		 */
1077
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1078 1079 1080 1081
		ieee80211_radar_detected(ar->hw);
	}
}

1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
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;
}

1115
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
M
Michal Kazior 已提交
1116 1117 1118 1119
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
1120
	int ret = 0, ret2;
M
Michal Kazior 已提交
1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151

	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;
	}

1152
	ath10k_dbg(ar, ATH10K_DBG_MAC,
M
Michal Kazior 已提交
1153 1154 1155 1156
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

1157 1158 1159 1160 1161
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

M
Michal Kazior 已提交
1162
	if (ret) {
1163
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
M
Michal Kazior 已提交
1164 1165 1166 1167 1168 1169
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1170 1171 1172
		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
M
Michal Kazior 已提交
1173 1174 1175
		return ret;
	}

1176 1177 1178
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
	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);
	}

M
Michal Kazior 已提交
1189 1190 1191
	return ret;
}

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
static int ath10k_vdev_start(struct ath10k_vif *arvif)
{
	return ath10k_vdev_start_restart(arvif, false);
}

static int ath10k_vdev_restart(struct ath10k_vif *arvif)
{
	return ath10k_vdev_start_restart(arvif, true);
}

1202 1203 1204 1205 1206 1207 1208 1209 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 1243 1244 1245 1246 1247 1248 1249 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
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;

1276 1277 1278 1279
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
	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;

1325 1326 1327
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
	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;
}

1346
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1347
				     struct ieee80211_bss_conf *info)
1348
{
1349
	struct ath10k *ar = arvif->ar;
1350 1351
	int ret = 0;

M
Michal Kazior 已提交
1352 1353
	lockdep_assert_held(&arvif->ar->conf_mutex);

1354 1355
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
1356 1357 1358

		arvif->is_started = false;
		arvif->is_up = false;
1359 1360

		spin_lock_bh(&arvif->ar->data_lock);
1361
		ath10k_mac_vif_beacon_free(arvif);
1362 1363
		spin_unlock_bh(&arvif->ar->data_lock);

1364 1365 1366 1367 1368 1369 1370 1371 1372
		return;
	}

	arvif->tx_seq_no = 0x1000;

	ret = ath10k_vdev_start(arvif);
	if (ret)
		return;

1373
	arvif->aid = 0;
K
Kalle Valo 已提交
1374
	ether_addr_copy(arvif->bssid, info->bssid);
1375 1376 1377

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1378
	if (ret) {
1379
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1380
			    arvif->vdev_id, ret);
1381
		ath10k_vdev_stop(arvif);
1382 1383
		return;
	}
1384 1385 1386 1387

	arvif->is_started = true;
	arvif->is_up = true;

1388
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1389 1390 1391 1392 1393 1394
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1395
	struct ath10k *ar = arvif->ar;
1396
	u32 vdev_param;
1397 1398
	int ret = 0;

M
Michal Kazior 已提交
1399 1400
	lockdep_assert_held(&arvif->ar->conf_mutex);

1401 1402 1403
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
1404
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1405 1406
				    self_peer, arvif->vdev_id, ret);

1407
		if (is_zero_ether_addr(arvif->bssid))
1408 1409
			return;

1410
		memset(arvif->bssid, 0, ETH_ALEN);
1411 1412 1413 1414

		return;
	}

1415 1416
	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer,
				 WMI_PEER_TYPE_DEFAULT);
1417
	if (ret) {
1418
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1419 1420 1421 1422
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1423 1424
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1425 1426
					ATH10K_DEFAULT_ATIM);
	if (ret)
1427
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1428 1429 1430
			    arvif->vdev_id, ret);
}

M
Michal Kazior 已提交
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 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481
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;
}

1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495
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;
}

1496
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1497
{
1498
	struct ath10k *ar = arvif->ar;
1499
	struct ieee80211_vif *vif = arvif->vif;
1500
	struct ieee80211_conf *conf = &ar->hw->conf;
1501 1502 1503
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1504
	int ps_timeout;
1505
	bool enable_ps;
1506

M
Michal Kazior 已提交
1507 1508
	lockdep_assert_held(&arvif->ar->conf_mutex);

1509 1510
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1511

1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522
	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;
	}

	if (enable_ps) {
1523 1524 1525
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1526 1527 1528 1529 1530 1531 1532
		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;
		}

1533
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1534
						  ps_timeout);
1535
		if (ret) {
1536
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1537
				    arvif->vdev_id, ret);
1538
			return ret;
1539 1540 1541 1542 1543
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1544
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
K
Kalle Valo 已提交
1545 1546
		   arvif->vdev_id, psmode ? "enable" : "disable");

1547 1548
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1549
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1550
			    psmode, arvif->vdev_id, ret);
1551 1552 1553 1554
		return ret;
	}

	return 0;
1555 1556
}

M
Michal Kazior 已提交
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588
static int ath10k_mac_vif_disable_keepalive(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct wmi_sta_keepalive_arg arg = {};
	int ret;

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

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

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

	/* Some firmware revisions have a bug and ignore the `enabled` field.
	 * Instead use the interval to disable the keepalive.
	 */
	arg.vdev_id = arvif->vdev_id;
	arg.enabled = 1;
	arg.method = WMI_STA_KEEPALIVE_METHOD_NULL_FRAME;
	arg.interval = WMI_STA_KEEPALIVE_INTERVAL_DISABLE;

	ret = ath10k_wmi_sta_keepalive(ar, &arg);
	if (ret) {
		ath10k_warn(ar, "failed to submit keepalive on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

1589 1590 1591 1592 1593 1594
static void ath10k_mac_vif_ap_csa_count_down(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_vif *vif = arvif->vif;
	int ret;

1595 1596 1597 1598 1599
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return;

	if (!vif->csa_active)
		return;

	if (!arvif->is_up)
		return;

	if (!ieee80211_csa_is_complete(vif)) {
		ieee80211_csa_update_counter(vif);

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
				    ret);

		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
				    ret);
	} else {
		ieee80211_csa_finish(vif);
	}
}

static void ath10k_mac_vif_ap_csa_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						ap_csa_work);
	struct ath10k *ar = arvif->ar;

	mutex_lock(&ar->conf_mutex);
	ath10k_mac_vif_ap_csa_count_down(arvif);
	mutex_unlock(&ar->conf_mutex);
}

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 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705
static void ath10k_mac_handle_beacon_iter(void *data, u8 *mac,
					  struct ieee80211_vif *vif)
{
	struct sk_buff *skb = data;
	struct ieee80211_mgmt *mgmt = (void *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (vif->type != NL80211_IFTYPE_STATION)
		return;

	if (!ether_addr_equal(mgmt->bssid, vif->bss_conf.bssid))
		return;

	cancel_delayed_work(&arvif->connection_loss_work);
}

void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb)
{
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_handle_beacon_iter,
						   skb);
}

static void ath10k_mac_handle_beacon_miss_iter(void *data, u8 *mac,
					       struct ieee80211_vif *vif)
{
	u32 *vdev_id = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;

	if (arvif->vdev_id != *vdev_id)
		return;

	if (!arvif->is_up)
		return;

	ieee80211_beacon_loss(vif);

	/* Firmware doesn't report beacon loss events repeatedly. If AP probe
	 * (done by mac80211) succeeds but beacons do not resume then it
	 * doesn't make sense to continue operation. Queue connection loss work
	 * which can be cancelled when beacon is received.
	 */
	ieee80211_queue_delayed_work(hw, &arvif->connection_loss_work,
				     ATH10K_CONNECTION_LOSS_HZ);
}

void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id)
{
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_handle_beacon_miss_iter,
						   &vdev_id);
}

static void ath10k_mac_vif_sta_connection_loss_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						connection_loss_work.work);
	struct ieee80211_vif *vif = arvif->vif;

	if (!arvif->is_up)
		return;

	ieee80211_connection_loss(vif);
}

1706 1707 1708 1709
/**********************/
/* Station management */
/**********************/

M
Michal Kazior 已提交
1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726
static u32 ath10k_peer_assoc_h_listen_intval(struct ath10k *ar,
					     struct ieee80211_vif *vif)
{
	/* Some firmware revisions have unstable STA powersave when listen
	 * interval is set too high (e.g. 5). The symptoms are firmware doesn't
	 * generate NullFunc frames properly even if buffered frames have been
	 * indicated in Beacon TIM. Firmware would seldom wake up to pull
	 * buffered frames. Often pinging the device from AP would simply fail.
	 *
	 * As a workaround set it to 1.
	 */
	if (vif->type == NL80211_IFTYPE_STATION)
		return 1;

	return ar->hw->conf.listen_interval;
}

1727
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
1728
				      struct ieee80211_vif *vif,
1729 1730 1731
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1732
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1733
	u32 aid;
M
Michal Kazior 已提交
1734

M
Michal Kazior 已提交
1735 1736
	lockdep_assert_held(&ar->conf_mutex);

1737 1738 1739 1740 1741
	if (vif->type == NL80211_IFTYPE_STATION)
		aid = vif->bss_conf.aid;
	else
		aid = sta->aid;

K
Kalle Valo 已提交
1742
	ether_addr_copy(arg->addr, sta->addr);
1743
	arg->vdev_id = arvif->vdev_id;
1744
	arg->peer_aid = aid;
1745
	arg->peer_flags |= WMI_PEER_AUTH;
M
Michal Kazior 已提交
1746
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1747
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
1748
	arg->peer_caps = vif->bss_conf.assoc_capability;
1749 1750 1751
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
1752
				       struct ieee80211_vif *vif,
1753 1754 1755 1756 1757 1758 1759
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

M
Michal Kazior 已提交
1760 1761
	lockdep_assert_held(&ar->conf_mutex);

1762
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
1763 1764
			       info->bssid, NULL, 0, IEEE80211_BSS_TYPE_ANY,
			       IEEE80211_PRIVACY_ANY);
1765 1766 1767 1768 1769 1770 1771 1772 1773
	if (bss) {
		const struct cfg80211_bss_ies *ies;

		rcu_read_lock();
		rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);

		ies = rcu_dereference(bss->ies);

		wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
1774 1775 1776
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1777 1778 1779 1780 1781 1782
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1783
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1784 1785 1786 1787
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
1788
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800
		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
	u32 ratemask;
M
Michal Kazior 已提交
1801
	u8 rate;
1802 1803
	int i;

M
Michal Kazior 已提交
1804 1805
	lockdep_assert_held(&ar->conf_mutex);

1806 1807 1808 1809 1810 1811 1812 1813 1814 1815
	sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
	ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band];
	rates = sband->bitrates;

	rateset->num_rates = 0;

	for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
		if (!(ratemask & 1))
			continue;

M
Michal Kazior 已提交
1816 1817
		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827
		rateset->num_rates++;
	}
}

static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
	int i, n;
1828
	u32 stbc;
1829

M
Michal Kazior 已提交
1830 1831
	lockdep_assert_held(&ar->conf_mutex);

1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880
	if (!ht_cap->ht_supported)
		return;

	arg->peer_flags |= WMI_PEER_HT;
	arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
				    ht_cap->ampdu_factor)) - 1;

	arg->peer_mpdu_density =
		ath10k_parse_mpdudensity(ht_cap->ampdu_density);

	arg->peer_ht_caps = ht_cap->cap;
	arg->peer_rate_caps |= WMI_RC_HT_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING)
		arg->peer_flags |= WMI_PEER_LDPC;

	if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
		arg->peer_flags |= WMI_PEER_40MHZ;
		arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
	}

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) {
		stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC;
		stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc = stbc << WMI_RC_RX_STBC_FLAG_S;
		arg->peer_rate_caps |= stbc;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2])
		arg->peer_rate_caps |= WMI_RC_TS_FLAG;
	else if (ht_cap->mcs.rx_mask[1])
		arg->peer_rate_caps |= WMI_RC_DS_FLAG;

	for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++)
		if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8))
			arg->peer_ht_rates.rates[n++] = i;

1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897
	/*
	 * This is a workaround for HT-enabled STAs which break the spec
	 * and have no HT capabilities RX mask (no HT RX MCS map).
	 *
	 * As per spec, in section 20.3.5 Modulation and coding scheme (MCS),
	 * MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.
	 *
	 * Firmware asserts if such situation occurs.
	 */
	if (n == 0) {
		arg->peer_ht_rates.num_rates = 8;
		for (i = 0; i < arg->peer_ht_rates.num_rates; i++)
			arg->peer_ht_rates.rates[i] = i;
	} else {
		arg->peer_ht_rates.num_rates = n;
		arg->peer_num_spatial_streams = sta->rx_nss;
	}
1898

1899
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
K
Kalle Valo 已提交
1900
		   arg->addr,
1901 1902 1903 1904
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1905 1906 1907
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1908 1909 1910
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1911
	int ret = 0;
1912

M
Michal Kazior 已提交
1913 1914
	lockdep_assert_held(&ar->conf_mutex);

1915
	if (sta->wme && sta->uapsd_queues) {
1916
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934
			   sta->uapsd_queues, sta->max_sp);

		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
			uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC3_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
			uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC2_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
			uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC1_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
			uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC0_TRIGGER_EN;

		if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP)
			max_sp = sta->max_sp;

1935 1936 1937 1938 1939
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1940
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1941
				    arvif->vdev_id, ret);
1942 1943
			return ret;
		}
1944

1945 1946 1947 1948 1949
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1950
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1951
				    arvif->vdev_id, ret);
1952 1953
			return ret;
		}
1954 1955 1956 1957 1958

		/* TODO setup this based on STA listen interval and
		   beacon interval. Currently we don't know
		   sta->listen_interval - mac80211 patch required.
		   Currently use 10 seconds */
1959
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1960 1961
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1962
		if (ret) {
1963
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1964
				    arvif->vdev_id, ret);
1965 1966
			return ret;
		}
1967 1968
	}

1969
	return 0;
1970 1971 1972 1973 1974 1975 1976
}

static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
1977
	u8 ampdu_factor;
1978 1979 1980 1981 1982

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
1983 1984 1985 1986

	if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
		arg->peer_flags |= WMI_PEER_VHT_2G;

1987 1988
	arg->peer_vht_caps = vht_cap->cap;

1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
	ampdu_factor = (vht_cap->cap &
			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
		       IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;

	/* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to
	 * zero in VHT IE. Using it would result in degraded throughput.
	 * arg->peer_max_mpdu at this point contains HT max_mpdu so keep
	 * it if VHT max_mpdu is smaller. */
	arg->peer_max_mpdu = max(arg->peer_max_mpdu,
				 (1U << (IEEE80211_HT_MAX_AMPDU_FACTOR +
					ampdu_factor)) - 1);

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		arg->peer_flags |= WMI_PEER_80MHZ;

	arg->peer_vht_rates.rx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
	arg->peer_vht_rates.rx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
	arg->peer_vht_rates.tx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
	arg->peer_vht_rates.tx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);

2013
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
K
Kalle Valo 已提交
2014
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
2015 2016 2017
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
M
Michal Kazior 已提交
2018
				    struct ieee80211_vif *vif,
2019 2020 2021
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
2022 2023
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

2024 2025
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
2026 2027 2028 2029 2030 2031 2032
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;

		if (sta->wme && sta->uapsd_queues) {
			arg->peer_flags |= WMI_PEER_APSD;
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
2033 2034
		break;
	case WMI_VDEV_TYPE_STA:
M
Michal Kazior 已提交
2035
		if (vif->bss_conf.qos)
2036
			arg->peer_flags |= WMI_PEER_QOS;
2037
		break;
2038 2039 2040 2041
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
2042 2043 2044
	default:
		break;
	}
2045 2046 2047

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
2048 2049
}

2050
static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
M
Michal Kazior 已提交
2051
{
2052 2053
	return sta->supp_rates[IEEE80211_BAND_2GHZ] >>
	       ATH10K_MAC_FIRST_OFDM_RATE_IDX;
M
Michal Kazior 已提交
2054 2055
}

2056
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
2057
					struct ieee80211_vif *vif,
2058 2059 2060 2061 2062 2063 2064
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (ar->hw->conf.chandef.chan->band) {
	case IEEE80211_BAND_2GHZ:
2065 2066 2067 2068 2069 2070
		if (sta->vht_cap.vht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
		} else if (sta->ht_cap.ht_supported) {
2071 2072 2073 2074
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
2075
		} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
2076
			phymode = MODE_11G;
M
Michal Kazior 已提交
2077 2078
		} else {
			phymode = MODE_11B;
2079 2080 2081 2082
		}

		break;
	case IEEE80211_BAND_5GHZ:
2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093
		/*
		 * Check VHT first.
		 */
		if (sta->vht_cap.vht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
				phymode = MODE_11AC_VHT80;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
				phymode = MODE_11AC_VHT20;
		} else if (sta->ht_cap.ht_supported) {
2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2107
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
2108
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
2109

2110 2111 2112 2113
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2114
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
2115
				     struct ieee80211_vif *vif,
2116 2117
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2118
{
M
Michal Kazior 已提交
2119 2120
	lockdep_assert_held(&ar->conf_mutex);

2121
	memset(arg, 0, sizeof(*arg));
2122

M
Michal Kazior 已提交
2123 2124
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
2125 2126 2127
	ath10k_peer_assoc_h_rates(ar, sta, arg);
	ath10k_peer_assoc_h_ht(ar, sta, arg);
	ath10k_peer_assoc_h_vht(ar, sta, arg);
M
Michal Kazior 已提交
2128 2129
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2130

2131
	return 0;
2132 2133
}

M
Michal Kazior 已提交
2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160
static const u32 ath10k_smps_map[] = {
	[WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
	[WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
	[WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
	[WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
};

static int ath10k_setup_peer_smps(struct ath10k *ar, struct ath10k_vif *arvif,
				  const u8 *addr,
				  const struct ieee80211_sta_ht_cap *ht_cap)
{
	int smps;

	if (!ht_cap->ht_supported)
		return 0;

	smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
	smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (smps >= ARRAY_SIZE(ath10k_smps_map))
		return -EINVAL;

	return ath10k_wmi_peer_set_param(ar, arvif->vdev_id, addr,
					 WMI_PEER_SMPS_STATE,
					 ath10k_smps_map[smps]);
}

M
Michal Kazior 已提交
2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222
static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
				      struct ieee80211_vif *vif,
				      struct ieee80211_sta_vht_cap vht_cap)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;
	u32 param;
	u32 value;

	if (!(ar->vht_cap_info &
	      (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
	       IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
	       IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
	       IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
		return 0;

	param = ar->wmi.vdev_param->txbf;
	value = 0;

	if (WARN_ON(param == WMI_VDEV_PARAM_UNSUPPORTED))
		return 0;

	/* The following logic is correct. If a remote STA advertises support
	 * for being a beamformer then we should enable us being a beamformee.
	 */

	if (ar->vht_cap_info &
	    (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
	     IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

		if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFEE;
	}

	if (ar->vht_cap_info &
	    (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
	     IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

		if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFER;
	}

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFEE)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFER)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit vdev param txbf 0x%x: %d\n",
			    value, ret);
		return ret;
	}

	return 0;
}

2223 2224 2225 2226 2227 2228 2229
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2230
	struct ieee80211_sta_ht_cap ht_cap;
M
Michal Kazior 已提交
2231
	struct ieee80211_sta_vht_cap vht_cap;
2232
	struct wmi_peer_assoc_complete_arg peer_arg;
2233 2234 2235
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
2236 2237
	lockdep_assert_held(&ar->conf_mutex);

2238 2239 2240
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2241 2242 2243 2244
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2245
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2246
			    bss_conf->bssid, arvif->vdev_id);
2247 2248 2249 2250
		rcu_read_unlock();
		return;
	}

M
Michal Kazior 已提交
2251 2252 2253
	/* ap_sta must be accessed only within rcu section which must be left
	 * before calling ath10k_setup_peer_smps() which might sleep. */
	ht_cap = ap_sta->ht_cap;
M
Michal Kazior 已提交
2254
	vht_cap = ap_sta->vht_cap;
M
Michal Kazior 已提交
2255

M
Michal Kazior 已提交
2256
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2257
	if (ret) {
2258
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2259
			    bss_conf->bssid, arvif->vdev_id, ret);
2260 2261 2262 2263 2264 2265
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2266 2267
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2268
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2269
			    bss_conf->bssid, arvif->vdev_id, ret);
2270 2271 2272
		return;
	}

M
Michal Kazior 已提交
2273 2274
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2275
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2276
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
2277 2278 2279
		return;
	}

M
Michal Kazior 已提交
2280 2281 2282 2283 2284 2285 2286
	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i on bss %pM: %d\n",
			    arvif->vdev_id, bss_conf->bssid, ret);
		return;
	}

2287
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
2288 2289 2290
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2291 2292
	WARN_ON(arvif->is_up);

2293
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
2294
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2295 2296 2297

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2298
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2299
			    arvif->vdev_id, ret);
2300 2301 2302 2303
		return;
	}

	arvif->is_up = true;
2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315

	/* Workaround: Some firmware revisions (tested with qca6174
	 * WLAN.RM.2.0-00073) have buggy powersave state machine and must be
	 * poked with peer param command.
	 */
	ret = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, arvif->bssid,
					WMI_PEER_DUMMY_VAR, 1);
	if (ret) {
		ath10k_warn(ar, "failed to poke peer %pM param for ps workaround on vdev %i: %d\n",
			    arvif->bssid, arvif->vdev_id, ret);
		return;
	}
2316 2317 2318 2319 2320 2321 2322
}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2323
	struct ieee80211_sta_vht_cap vht_cap = {};
2324 2325
	int ret;

M
Michal Kazior 已提交
2326 2327
	lockdep_assert_held(&ar->conf_mutex);

2328 2329
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2330

2331
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2332 2333 2334
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
2335

2336 2337
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2338 2339 2340 2341 2342 2343 2344
	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return;
	}

2345
	arvif->is_up = false;
2346 2347

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2348 2349
}

M
Michal Kazior 已提交
2350 2351 2352 2353
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2354
{
M
Michal Kazior 已提交
2355
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2356
	struct wmi_peer_assoc_complete_arg peer_arg;
2357 2358
	int ret = 0;

M
Michal Kazior 已提交
2359 2360
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2361
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2362
	if (ret) {
2363
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2364
			    sta->addr, arvif->vdev_id, ret);
2365 2366 2367
		return ret;
	}

2368
	peer_arg.peer_reassoc = reassoc;
2369
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2370
	if (ret) {
2371
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2372
			    sta->addr, arvif->vdev_id, ret);
2373 2374 2375
		return ret;
	}

2376 2377 2378 2379 2380 2381
	/* Re-assoc is run only to update supported rates for given station. It
	 * doesn't make much sense to reconfigure the peer completely.
	 */
	if (!reassoc) {
		ret = ath10k_setup_peer_smps(ar, arvif, sta->addr,
					     &sta->ht_cap);
2382
		if (ret) {
2383
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2384 2385 2386 2387
				    arvif->vdev_id, ret);
			return ret;
		}

2388 2389 2390 2391 2392 2393
		ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
		if (ret) {
			ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
				    sta->addr, arvif->vdev_id, ret);
			return ret;
		}
2394

2395 2396 2397 2398 2399 2400 2401 2402 2403 2404
		if (!sta->wme) {
			arvif->num_legacy_stations++;
			ret  = ath10k_recalc_rtscts_prot(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
		}

2405 2406 2407 2408 2409 2410 2411 2412
		/* Plumb cached keys only for static WEP */
		if (arvif->def_wep_key_idx != -1) {
			ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
			if (ret) {
				ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
2413
		}
2414 2415
	}

2416 2417 2418
	return ret;
}

M
Michal Kazior 已提交
2419 2420
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2421 2422
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2423
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2424 2425
	int ret = 0;

M
Michal Kazior 已提交
2426 2427
	lockdep_assert_held(&ar->conf_mutex);

2428 2429 2430 2431
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2432
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2433 2434 2435 2436 2437
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2438 2439
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2440
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2441
			    arvif->vdev_id, ret);
2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464
		return ret;
	}

	return ret;
}

/**************/
/* Regulatory */
/**************/

static int ath10k_update_channel_list(struct ath10k *ar)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_supported_band **bands;
	enum ieee80211_band band;
	struct ieee80211_channel *channel;
	struct wmi_scan_chan_list_arg arg = {0};
	struct wmi_channel_arg *ch;
	bool passive;
	int len;
	int ret;
	int i;

M
Michal Kazior 已提交
2465 2466
	lockdep_assert_held(&ar->conf_mutex);

2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502
	bands = hw->wiphy->bands;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			if (bands[band]->channels[i].flags &
			    IEEE80211_CHAN_DISABLED)
				continue;

			arg.n_channels++;
		}
	}

	len = sizeof(struct wmi_channel_arg) * arg.n_channels;
	arg.channels = kzalloc(len, GFP_KERNEL);
	if (!arg.channels)
		return -ENOMEM;

	ch = arg.channels;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			channel = &bands[band]->channels[i];

			if (channel->flags & IEEE80211_CHAN_DISABLED)
				continue;

			ch->allow_ht   = true;

			/* FIXME: when should we really allow VHT? */
			ch->allow_vht = true;

			ch->allow_ibss =
2503
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2504 2505 2506 2507

			ch->ht40plus =
				!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS);

2508 2509 2510
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2511
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2512 2513 2514
			ch->passive = passive;

			ch->freq = channel->center_freq;
2515
			ch->band_center_freq1 = channel->center_freq;
2516
			ch->min_power = 0;
M
Michal Kazior 已提交
2517 2518 2519
			ch->max_power = channel->max_power * 2;
			ch->max_reg_power = channel->max_reg_power * 2;
			ch->max_antenna_gain = channel->max_antenna_gain * 2;
2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532
			ch->reg_class_id = 0; /* FIXME */

			/* FIXME: why use only legacy modes, why not any
			 * HT/VHT modes? Would that even make any
			 * difference? */
			if (channel->band == IEEE80211_BAND_2GHZ)
				ch->mode = MODE_11G;
			else
				ch->mode = MODE_11A;

			if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN))
				continue;

2533
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2534 2535
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548
				   ch->freq, ch->max_power, ch->max_reg_power,
				   ch->max_antenna_gain, ch->mode);

			ch++;
		}
	}

	ret = ath10k_wmi_scan_chan_list(ar, &arg);
	kfree(arg.channels);

	return ret;
}

2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564
static enum wmi_dfs_region
ath10k_mac_get_dfs_region(enum nl80211_dfs_regions dfs_region)
{
	switch (dfs_region) {
	case NL80211_DFS_UNSET:
		return WMI_UNINIT_DFS_DOMAIN;
	case NL80211_DFS_FCC:
		return WMI_FCC_DFS_DOMAIN;
	case NL80211_DFS_ETSI:
		return WMI_ETSI_DFS_DOMAIN;
	case NL80211_DFS_JP:
		return WMI_MKK4_DFS_DOMAIN;
	}
	return WMI_UNINIT_DFS_DOMAIN;
}

2565
static void ath10k_regd_update(struct ath10k *ar)
2566 2567 2568
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2569 2570
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2571

2572
	lockdep_assert_held(&ar->conf_mutex);
2573 2574 2575

	ret = ath10k_update_channel_list(ar);
	if (ret)
2576
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2577 2578

	regpair = ar->ath_common.regulatory.regpair;
2579

2580 2581 2582 2583 2584 2585 2586
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
		nl_dfs_reg = ar->dfs_detector->region;
		wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
	} else {
		wmi_dfs_reg = WMI_UNINIT_DFS_DOMAIN;
	}

2587 2588 2589
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2590 2591 2592
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2593
					    regpair->reg_2ghz_ctl,
2594 2595
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2596
	if (ret)
2597
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2598
}
M
Michal Kazior 已提交
2599

2600 2601 2602 2603 2604
static void ath10k_reg_notifier(struct wiphy *wiphy,
				struct regulatory_request *request)
{
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct ath10k *ar = hw->priv;
J
Janusz Dziedzic 已提交
2605
	bool result;
2606 2607 2608

	ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);

J
Janusz Dziedzic 已提交
2609
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2610
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
2611 2612 2613 2614
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
2615
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
2616 2617 2618
				    request->dfs_region);
	}

2619 2620 2621
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
2622
	mutex_unlock(&ar->conf_mutex);
2623 2624 2625 2626 2627 2628
}

/***************/
/* TX handlers */
/***************/

2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642
static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
	if (ieee80211_is_mgmt(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_MGMT;

	if (!ieee80211_is_data_qos(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;

	if (!is_unicast_ether_addr(ieee80211_get_DA(hdr)))
		return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;

	return ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
}

2643
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
2644
{
2645 2646
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
2647

M
Michal Kazior 已提交
2648
	if (ar->monitor_started)
2649 2650
		return ar->monitor_vdev_id;

2651
	ath10k_warn(ar, "failed to resolve vdev id\n");
2652 2653 2654
	return 0;
}

2655 2656
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
2657
		       struct ieee80211_sta *sta, struct sk_buff *skb)
2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688
{
	const struct ieee80211_hdr *hdr = (void *)skb->data;
	__le16 fc = hdr->frame_control;

	if (!vif || vif->type == NL80211_IFTYPE_MONITOR)
		return ATH10K_HW_TXRX_RAW;

	if (ieee80211_is_mgmt(fc))
		return ATH10K_HW_TXRX_MGMT;

	/* Workaround:
	 *
	 * NullFunc frames are mostly used to ping if a client or AP are still
	 * reachable and responsive. This implies tx status reports must be
	 * accurate - otherwise either mac80211 or userspace (e.g. hostapd) can
	 * come to a conclusion that the other end disappeared and tear down
	 * BSS connection or it can never disconnect from BSS/client (which is
	 * the case).
	 *
	 * Firmware with HTT older than 3.0 delivers incorrect tx status for
	 * NullFunc frames to driver. However there's a HTT Mgmt Tx command
	 * which seems to deliver correct tx reports for NullFunc frames. The
	 * downside of using it is it ignores client powersave state so it can
	 * end up disconnecting sleeping clients in AP mode. It should fix STA
	 * mode though because AP don't sleep.
	 */
	if (ar->htt.target_version_major < 3 &&
	    (ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) &&
	    !test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX, ar->fw_features))
		return ATH10K_HW_TXRX_MGMT;

2689 2690 2691 2692 2693 2694 2695 2696 2697
	/* Workaround:
	 *
	 * Some wmi-tlv firmwares for qca6174 have broken Tx key selection for
	 * NativeWifi txmode - it selects AP key instead of peer key. It seems
	 * to work with Ethernet txmode so use it.
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

2698 2699 2700
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

M
Michal Kazior 已提交
2701 2702
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
2703
 */
M
Michal Kazior 已提交
2704
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
2705 2706
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
2707
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
2708 2709 2710 2711 2712 2713
	u8 *qos_ctl;

	if (!ieee80211_is_data_qos(hdr->frame_control))
		return;

	qos_ctl = ieee80211_get_qos_ctl(hdr);
2714 2715 2716
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
2717

2718 2719 2720
	/* Some firmware revisions don't handle sending QoS NullFunc well.
	 * These frames are mainly used for CQM purposes so it doesn't really
	 * matter whether QoS NullFunc or NullFunc are sent.
2721
	 */
M
Michal Kazior 已提交
2722
	hdr = (void *)skb->data;
2723
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
2724
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
2725 2726

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2727 2728
}

2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755
static void ath10k_tx_h_8023(struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct rfc1042_hdr *rfc1042;
	struct ethhdr *eth;
	size_t hdrlen;
	u8 da[ETH_ALEN];
	u8 sa[ETH_ALEN];
	__be16 type;

	hdr = (void *)skb->data;
	hdrlen = ieee80211_hdrlen(hdr->frame_control);
	rfc1042 = (void *)skb->data + hdrlen;

	ether_addr_copy(da, ieee80211_get_DA(hdr));
	ether_addr_copy(sa, ieee80211_get_SA(hdr));
	type = rfc1042->snap_type;

	skb_pull(skb, hdrlen + sizeof(*rfc1042));
	skb_push(skb, sizeof(*eth));

	eth = (void *)skb->data;
	ether_addr_copy(eth->h_dest, da);
	ether_addr_copy(eth->h_source, sa);
	eth->h_proto = type;
}

M
Michal Kazior 已提交
2756 2757 2758
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	/* This is case only for P2P_GO */
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP ||
	    arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
		return;

	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
		spin_lock_bh(&ar->data_lock);
		if (arvif->u.ap.noa_data)
			if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len,
					      GFP_ATOMIC))
				memcpy(skb_put(skb, arvif->u.ap.noa_len),
				       arvif->u.ap.noa_data,
				       arvif->u.ap.noa_len);
		spin_unlock_bh(&ar->data_lock);
	}
}

M
Michal Kazior 已提交
2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791
static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
{
	/* FIXME: Not really sure since when the behaviour changed. At some
	 * point new firmware stopped requiring creation of peer entries for
	 * offchannel tx (and actually creating them causes issues with wmi-htc
	 * tx credit replenishment and reliability). Assuming it's at least 3.4
	 * because that's when the `freq` was introduced to TX_FRM HTT command.
	 */
	return !(ar->htt.target_version_major >= 3 &&
		 ar->htt.target_version_minor >= 4);
}

2792
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
2793
{
2794
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
2795
	int ret = 0;
2796

2797 2798 2799 2800 2801 2802
	spin_lock_bh(&ar->data_lock);

	if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
		ath10k_warn(ar, "wmi mgmt tx queue is full\n");
		ret = -ENOSPC;
		goto unlock;
M
Michal Kazior 已提交
2803 2804
	}

2805 2806
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
2807

2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

static void ath10k_mac_tx(struct ath10k *ar, struct sk_buff *skb)
{
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
	struct ath10k_htt *htt = &ar->htt;
	int ret = 0;

	switch (cb->txmode) {
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
		ret = ath10k_htt_tx(htt, skb);
		break;
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features))
			ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		else if (ar->htt.target_version_major >= 3)
			ret = ath10k_htt_tx(htt, skb);
		else
			ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
2835
	}
2836 2837

	if (ret) {
2838 2839
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880
		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
	struct ath10k_peer *peer;
	struct ieee80211_hdr *hdr;
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;

	/* FW requirement: We must create a peer before FW will send out
	 * an offchannel frame. Otherwise the frame will be stuck and
	 * never transmitted. We delete the peer upon tx completion.
	 * It is unlikely that a peer for offchannel tx will already be
	 * present. However it may be in some rare cases so account for that.
	 * Otherwise we might remove a legitimate peer and break stuff. */

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		mutex_lock(&ar->conf_mutex);

2881
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2882 2883 2884 2885
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2886
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2887 2888 2889 2890 2891 2892

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

		if (peer)
K
Kalle Valo 已提交
2893
			/* FIXME: should this use ath10k_warn()? */
2894
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2895 2896 2897
				   peer_addr, vdev_id);

		if (!peer) {
2898 2899
			ret = ath10k_peer_create(ar, vdev_id, peer_addr,
						 WMI_PEER_TYPE_DEFAULT);
2900
			if (ret)
2901
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2902 2903 2904 2905
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2906
		reinit_completion(&ar->offchan_tx_completed);
2907 2908 2909
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

2910
		ath10k_mac_tx(ar, skb);
2911 2912 2913

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
2914
		if (ret == 0)
2915
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2916 2917 2918 2919 2920
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2921
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2922 2923 2924 2925 2926 2927 2928
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953
void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, wmi_mgmt_tx_work);
	struct sk_buff *skb;
	int ret;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ret = ath10k_wmi_mgmt_tx(ar, skb);
2954
		if (ret) {
2955
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2956
				    ret);
2957 2958
			ieee80211_free_txskb(ar->hw, skb);
		}
2959 2960 2961
	}
}

2962 2963 2964 2965
/************/
/* Scanning */
/************/

2966
void __ath10k_scan_finish(struct ath10k *ar)
2967
{
2968
	lockdep_assert_held(&ar->data_lock);
2969

2970 2971 2972 2973 2974 2975
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
		if (ar->scan.is_roc)
			ieee80211_remain_on_channel_expired(ar->hw);
2976
		/* fall through */
2977 2978
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989
			ieee80211_scan_completed(ar->hw,
						 (ar->scan.state ==
						  ATH10K_SCAN_ABORTING));
		/* fall through */
	case ATH10K_SCAN_STARTING:
		ar->scan.state = ATH10K_SCAN_IDLE;
		ar->scan_channel = NULL;
		ath10k_offchan_tx_purge(ar);
		cancel_delayed_work(&ar->scan.timeout);
		complete_all(&ar->scan.completed);
		break;
2990
	}
2991
}
2992

2993 2994 2995 2996
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2997 2998 2999
	spin_unlock_bh(&ar->data_lock);
}

3000
static int ath10k_scan_stop(struct ath10k *ar)
3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012
{
	struct wmi_stop_scan_arg arg = {
		.req_id = 1, /* FIXME */
		.req_type = WMI_SCAN_STOP_ONE,
		.u.scan_id = ATH10K_SCAN_ID,
	};
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_stop_scan(ar, &arg);
	if (ret) {
3013
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
3014
		goto out;
3015 3016 3017
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
3018
	if (ret == 0) {
3019
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
3020 3021 3022 3023
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
3024

3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045
out:
	/* Scan state should be updated upon scan completion but in case
	 * firmware fails to deliver the event (for whatever reason) it is
	 * desired to clean up scan state anyway. Firmware may have just
	 * dropped the scan completion event delivery due to transport pipe
	 * being overflown with data and/or it can recover on its own before
	 * next scan request is submitted.
	 */
	spin_lock_bh(&ar->data_lock);
	if (ar->scan.state != ATH10K_SCAN_IDLE)
		__ath10k_scan_finish(ar);
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

static void ath10k_scan_abort(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);
3046 3047

	spin_lock_bh(&ar->data_lock);
3048 3049 3050 3051 3052 3053 3054 3055 3056

	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		/* This can happen if timeout worker kicked in and called
		 * abortion while scan completion was being processed.
		 */
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_ABORTING:
3057
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
3058 3059 3060 3061 3062 3063 3064 3065 3066
			    ath10k_scan_state_str(ar->scan.state),
			    ar->scan.state);
		break;
	case ATH10K_SCAN_RUNNING:
		ar->scan.state = ATH10K_SCAN_ABORTING;
		spin_unlock_bh(&ar->data_lock);

		ret = ath10k_scan_stop(ar);
		if (ret)
3067
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
3068 3069 3070

		spin_lock_bh(&ar->data_lock);
		break;
3071
	}
3072

3073
	spin_unlock_bh(&ar->data_lock);
3074
}
3075

3076 3077 3078 3079 3080 3081 3082 3083
void ath10k_scan_timeout_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k,
					 scan.timeout.work);

	mutex_lock(&ar->conf_mutex);
	ath10k_scan_abort(ar);
	mutex_unlock(&ar->conf_mutex);
3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098
}

static int ath10k_start_scan(struct ath10k *ar,
			     const struct wmi_start_scan_arg *arg)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_start_scan(ar, arg);
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ);
	if (ret == 0) {
3099 3100
		ret = ath10k_scan_stop(ar);
		if (ret)
3101
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3102 3103

		return -ETIMEDOUT;
3104 3105
	}

3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116
	/* If we failed to start the scan, return error code at
	 * this point.  This is probably due to some issue in the
	 * firmware, but no need to wedge the driver due to that...
	 */
	spin_lock_bh(&ar->data_lock);
	if (ar->scan.state == ATH10K_SCAN_IDLE) {
		spin_unlock_bh(&ar->data_lock);
		return -EINVAL;
	}
	spin_unlock_bh(&ar->data_lock);

3117 3118 3119
	/* Add a 200ms margin to account for event/command processing */
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(arg->max_scan_time+200));
3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
	return 0;
}

/**********************/
/* mac80211 callbacks */
/**********************/

static void ath10k_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
M
Michal Kazior 已提交
3131
	struct ath10k *ar = hw->priv;
3132
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
3133
	struct ieee80211_vif *vif = info->control.vif;
3134
	struct ieee80211_sta *sta = control->sta;
3135
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3136
	__le16 fc = hdr->frame_control;
3137 3138 3139

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
3140
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
3141

M
Michal Kazior 已提交
3142
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
M
Michal Kazior 已提交
3143
	ATH10K_SKB_CB(skb)->htt.freq = 0;
M
Michal Kazior 已提交
3144
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
3145
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
3146
	ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb);
3147
	ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc);
3148

3149 3150 3151
	switch (ATH10K_SKB_CB(skb)->txmode) {
	case ATH10K_HW_TXRX_MGMT:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
M
Michal Kazior 已提交
3152 3153 3154
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165
		break;
	case ATH10K_HW_TXRX_ETHERNET:
		ath10k_tx_h_8023(skb);
		break;
	case ATH10K_HW_TXRX_RAW:
		/* FIXME: Packet injection isn't implemented. It should be
		 * doable with firmware 10.2 on qca988x.
		 */
		WARN_ON_ONCE(1);
		ieee80211_free_txskb(hw, skb);
		return;
3166
	}
3167 3168 3169

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
3170
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
3171
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
3172 3173
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
3174 3175 3176
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
3177

M
Michal Kazior 已提交
3178 3179 3180 3181 3182 3183 3184
			ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
				   skb);

			skb_queue_tail(&ar->offchan_tx_queue, skb);
			ieee80211_queue_work(hw, &ar->offchan_tx_work);
			return;
		}
3185 3186
	}

3187
	ath10k_mac_tx(ar, skb);
3188 3189
}

3190
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
3191
void ath10k_drain_tx(struct ath10k *ar)
3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202
{
	/* make sure rcu-protected mac80211 tx path itself is drained */
	synchronize_net();

	ath10k_offchan_tx_purge(ar);
	ath10k_mgmt_over_wmi_tx_purge(ar);

	cancel_work_sync(&ar->offchan_tx_work);
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
}

3203
void ath10k_halt(struct ath10k *ar)
3204
{
3205 3206
	struct ath10k_vif *arvif;

3207 3208
	lockdep_assert_held(&ar->conf_mutex);

3209 3210 3211 3212 3213
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
	ar->filter_flags = 0;
	ar->monitor = false;

	if (ar->monitor_started)
M
Michal Kazior 已提交
3214
		ath10k_monitor_stop(ar);
3215 3216

	ar->monitor_started = false;
M
Michal Kazior 已提交
3217

3218
	ath10k_scan_finish(ar);
3219 3220 3221 3222 3223
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
3224 3225
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
3226 3227 3228
	spin_unlock_bh(&ar->data_lock);
}

3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	if (ar->cfg_tx_chainmask) {
		*tx_ant = ar->cfg_tx_chainmask;
		*rx_ant = ar->cfg_rx_chainmask;
	} else {
		*tx_ant = ar->supp_tx_chainmask;
		*rx_ant = ar->supp_rx_chainmask;
	}

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260
static void ath10k_check_chain_mask(struct ath10k *ar, u32 cm, const char *dbg)
{
	/* It is not clear that allowing gaps in chainmask
	 * is helpful.  Probably it will not do what user
	 * is hoping for, so warn in that case.
	 */
	if (cm == 15 || cm == 7 || cm == 3 || cm == 1 || cm == 0)
		return;

	ath10k_warn(ar, "mac %s antenna chainmask may be invalid: 0x%x.  Suggested values: 15, 7, 3, 1 or 0.\n",
		    dbg, cm);
}

3261 3262 3263 3264 3265 3266
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3267 3268 3269
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
	ar->cfg_tx_chainmask = tx_ant;
	ar->cfg_rx_chainmask = rx_ant;

	if ((ar->state != ATH10K_STATE_ON) &&
	    (ar->state != ATH10K_STATE_RESTARTED))
		return 0;

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->tx_chain_mask,
					tx_ant);
	if (ret) {
3280
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
3281 3282 3283 3284 3285 3286 3287
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
3288
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306
			    ret, rx_ant);
		return ret;
	}

	return 0;
}

static int ath10k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);
	ret = __ath10k_set_antenna(ar, tx_ant, rx_ant);
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

3307 3308 3309
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
3310
	int ret = 0;
3311

3312 3313 3314 3315 3316 3317 3318
	/*
	 * This makes sense only when restarting hw. It is harmless to call
	 * uncoditionally. This is necessary to make sure no HTT/WMI tx
	 * commands will be submitted while restarting.
	 */
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
3319 3320
	mutex_lock(&ar->conf_mutex);

3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332
	switch (ar->state) {
	case ATH10K_STATE_OFF:
		ar->state = ATH10K_STATE_ON;
		break;
	case ATH10K_STATE_RESTARTING:
		ath10k_halt(ar);
		ar->state = ATH10K_STATE_RESTARTED;
		break;
	case ATH10K_STATE_ON:
	case ATH10K_STATE_RESTARTED:
	case ATH10K_STATE_WEDGED:
		WARN_ON(1);
3333
		ret = -EINVAL;
3334
		goto err;
K
Kalle Valo 已提交
3335 3336 3337
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
3338 3339 3340 3341
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
3342
		ath10k_err(ar, "Could not init hif: %d\n", ret);
3343
		goto err_off;
3344 3345
	}

K
Kalle Valo 已提交
3346
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
3347
	if (ret) {
3348
		ath10k_err(ar, "Could not init core: %d\n", ret);
3349
		goto err_power_down;
3350 3351
	}

3352
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
3353
	if (ret) {
3354
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
3355 3356
		goto err_core_stop;
	}
3357

3358
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
3359
	if (ret) {
3360
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
3361 3362
		goto err_core_stop;
	}
3363

3364 3365 3366 3367
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379
	/*
	 * By default FW set ARP frames ac to voice (6). In that case ARP
	 * exchange is not working properly for UAPSD enabled AP. ARP requests
	 * which arrives with access category 0 are processed by network stack
	 * and send back with access category 0, but FW changes access category
	 * to 6. Set ARP frames access category to best effort (0) solves
	 * this problem.
	 */

	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->arp_ac_override, 0);
	if (ret) {
3380
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
3381
			    ret);
3382
		goto err_core_stop;
3383 3384
	}

3385 3386 3387 3388 3389 3390 3391 3392
	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->ani_enable, 1);
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

3393 3394
	ar->ani_enabled = true;

3395
	ar->num_started_vdevs = 0;
3396 3397
	ath10k_regd_update(ar);

3398
	ath10k_spectral_start(ar);
3399
	ath10k_thermal_set_throttling(ar);
3400

3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413
	mutex_unlock(&ar->conf_mutex);
	return 0;

err_core_stop:
	ath10k_core_stop(ar);

err_power_down:
	ath10k_hif_power_down(ar);

err_off:
	ar->state = ATH10K_STATE_OFF;

err:
M
Michal Kazior 已提交
3414
	mutex_unlock(&ar->conf_mutex);
3415
	return ret;
3416 3417 3418 3419 3420 3421
}

static void ath10k_stop(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

3422 3423
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
3424
	mutex_lock(&ar->conf_mutex);
3425
	if (ar->state != ATH10K_STATE_OFF) {
3426
		ath10k_halt(ar);
3427 3428
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
3429 3430
	mutex_unlock(&ar->conf_mutex);

3431
	cancel_delayed_work_sync(&ar->scan.timeout);
3432
	cancel_work_sync(&ar->restart_work);
3433 3434
}

3435
static int ath10k_config_ps(struct ath10k *ar)
3436
{
3437 3438
	struct ath10k_vif *arvif;
	int ret = 0;
3439 3440 3441

	lockdep_assert_held(&ar->conf_mutex);

3442 3443 3444
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
3445
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
3446 3447 3448
			break;
		}
	}
3449

3450
	return ret;
3451 3452
}

3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482
static const char *chandef_get_width(enum nl80211_chan_width width)
{
	switch (width) {
	case NL80211_CHAN_WIDTH_20_NOHT:
		return "20 (noht)";
	case NL80211_CHAN_WIDTH_20:
		return "20";
	case NL80211_CHAN_WIDTH_40:
		return "40";
	case NL80211_CHAN_WIDTH_80:
		return "80";
	case NL80211_CHAN_WIDTH_80P80:
		return "80+80";
	case NL80211_CHAN_WIDTH_160:
		return "160";
	case NL80211_CHAN_WIDTH_5:
		return "5";
	case NL80211_CHAN_WIDTH_10:
		return "10";
	}
	return "?";
}

static void ath10k_config_chan(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3483
	ath10k_dbg(ar, ATH10K_DBG_MAC,
3484 3485 3486 3487 3488 3489 3490 3491
		   "mac config channel to %dMHz (cf1 %dMHz cf2 %dMHz width %s)\n",
		   ar->chandef.chan->center_freq,
		   ar->chandef.center_freq1,
		   ar->chandef.center_freq2,
		   chandef_get_width(ar->chandef.width));

	/* First stop monitor interface. Some FW versions crash if there's a
	 * lone monitor interface. */
M
Michal Kazior 已提交
3492
	if (ar->monitor_started)
3493
		ath10k_monitor_stop(ar);
3494 3495 3496 3497 3498

	list_for_each_entry(arvif, &ar->arvifs, list) {
		if (!arvif->is_started)
			continue;

3499 3500 3501
		if (!arvif->is_up)
			continue;

3502 3503 3504
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3505
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
3506
		if (ret) {
3507
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
3508 3509 3510 3511 3512
				    arvif->vdev_id, ret);
			continue;
		}
	}

3513
	/* all vdevs are downed now - attempt to restart and re-up them */
3514 3515 3516 3517 3518 3519 3520 3521

	list_for_each_entry(arvif, &ar->arvifs, list) {
		if (!arvif->is_started)
			continue;

		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3522 3523 3524 3525 3526 3527 3528 3529 3530 3531
		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
				    ret);

		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
				    ret);

3532
		ret = ath10k_vdev_restart(arvif);
3533
		if (ret) {
3534
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
3535 3536 3537 3538 3539 3540 3541 3542 3543 3544
				    arvif->vdev_id, ret);
			continue;
		}

		if (!arvif->is_up)
			continue;

		ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
					 arvif->bssid);
		if (ret) {
3545
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
3546 3547 3548 3549 3550
				    arvif->vdev_id, ret);
			continue;
		}
	}

3551
	ath10k_monitor_recalc(ar);
3552 3553
}

3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610
static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower)
{
	int ret;
	u32 param;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower);

	param = ar->wmi.pdev_param->txpower_limit2g;
	ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
	if (ret) {
		ath10k_warn(ar, "failed to set 2g txpower %d: %d\n",
			    txpower, ret);
		return ret;
	}

	param = ar->wmi.pdev_param->txpower_limit5g;
	ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
	if (ret) {
		ath10k_warn(ar, "failed to set 5g txpower %d: %d\n",
			    txpower, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_txpower_recalc(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int ret, txpower = -1;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list) {
		WARN_ON(arvif->txpower < 0);

		if (txpower == -1)
			txpower = arvif->txpower;
		else
			txpower = min(txpower, arvif->txpower);
	}

	if (WARN_ON(txpower == -1))
		return -EINVAL;

	ret = ath10k_mac_txpower_setup(ar, txpower);
	if (ret) {
		ath10k_warn(ar, "failed to setup tx power %d: %d\n",
			    txpower, ret);
		return ret;
	}

	return 0;
}

3611 3612
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
3613 3614 3615 3616 3617 3618 3619
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
3620
		ath10k_dbg(ar, ATH10K_DBG_MAC,
3621
			   "mac config channel %dMHz flags 0x%x radar %d\n",
3622
			   conf->chandef.chan->center_freq,
3623 3624
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
3625

3626 3627 3628
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
3629

3630 3631
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
3632 3633 3634 3635 3636

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
3637 3638
	}

3639 3640
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
3641 3642

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
3643 3644 3645 3646
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
3647 3648 3649 3650 3651 3652
	}

	mutex_unlock(&ar->conf_mutex);
	return ret;
}

3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663
static u32 get_nss_from_chainmask(u16 chain_mask)
{
	if ((chain_mask & 0x15) == 0x15)
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677
/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
3678
	u32 value;
3679
	int bit;
3680
	u32 vdev_param;
3681

3682 3683
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

3684 3685
	mutex_lock(&ar->conf_mutex);

3686 3687
	memset(arvif, 0, sizeof(*arvif));

3688 3689 3690
	arvif->ar = ar;
	arvif->vif = vif;

3691
	INIT_LIST_HEAD(&arvif->list);
3692
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
3693 3694
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
3695

B
Ben Greear 已提交
3696
	if (ar->free_vdev_map == 0) {
3697
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
3698
		ret = -EBUSY;
3699
		goto err;
3700
	}
B
Ben Greear 已提交
3701
	bit = __ffs64(ar->free_vdev_map);
3702

B
Ben Greear 已提交
3703 3704
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
3705

B
Ben Greear 已提交
3706
	arvif->vdev_id = bit;
3707 3708 3709
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
M
Michal Kazior 已提交
3710 3711 3712 3713
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO;
		break;
	case NL80211_IFTYPE_MONITOR:
		arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
		break;
	default:
		WARN_ON(1);
		break;
	}

3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757
	/* Some firmware revisions don't wait for beacon tx completion before
	 * sending another SWBA event. This could lead to hardware using old
	 * (freed) beacon data in some cases, e.g. tx credit starvation
	 * combined with missed TBTT. This is very very rare.
	 *
	 * On non-IOMMU-enabled hosts this could be a possible security issue
	 * because hw could beacon some random data on the air.  On
	 * IOMMU-enabled hosts DMAR faults would occur in most cases and target
	 * device would crash.
	 *
	 * Since there are no beacon tx completions (implicit nor explicit)
	 * propagated to host the only workaround for this is to allocate a
	 * DMA-coherent buffer for a lifetime of a vif and use it for all
	 * beacon tx commands. Worst case for this approach is some beacons may
	 * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
	 */
	if (vif->type == NL80211_IFTYPE_ADHOC ||
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
3758
							GFP_ATOMIC);
3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n",
		   arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype,
		   arvif->beacon_buf ? "single-buf" : "per-skb");
3770 3771 3772 3773

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
3774
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
3775
			    arvif->vdev_id, ret);
3776
		goto err;
3777 3778
	}

B
Ben Greear 已提交
3779
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
3780
	list_add(&arvif->list, &ar->arvifs);
3781

M
Michal Kazior 已提交
3782 3783 3784 3785
	/* It makes no sense to have firmware do keepalives. mac80211 already
	 * takes care of this with idle connection polling.
	 */
	ret = ath10k_mac_vif_disable_keepalive(arvif);
3786
	if (ret) {
M
Michal Kazior 已提交
3787
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
3788
			    arvif->vdev_id, ret);
3789 3790
		goto err_vdev_delete;
	}
3791

3792
	arvif->def_wep_key_idx = -1;
3793

3794 3795
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3796
					ATH10K_HW_TXRX_NATIVE_WIFI);
3797
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
3798
	if (ret && ret != -EOPNOTSUPP) {
3799
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
3800
			    arvif->vdev_id, ret);
3801 3802
		goto err_vdev_delete;
	}
3803

3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817
	if (ar->cfg_tx_chainmask) {
		u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

		vdev_param = ar->wmi.vdev_param->nss;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						nss);
		if (ret) {
			ath10k_warn(ar, "failed to set vdev %i chainmask 0x%x, nss %i: %d\n",
				    arvif->vdev_id, ar->cfg_tx_chainmask, nss,
				    ret);
			goto err_vdev_delete;
		}
	}

3818
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3819 3820
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
					 WMI_PEER_TYPE_DEFAULT);
3821
		if (ret) {
3822
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3823
				    arvif->vdev_id, ret);
3824
			goto err_vdev_delete;
3825
		}
3826

3827 3828
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
3829
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3830
				    arvif->vdev_id, ret);
3831 3832
			goto err_peer_delete;
		}
3833 3834 3835 3836 3837 3838 3839
	}

	if (arvif->vdev_type == WMI_VDEV_TYPE_STA) {
		param = WMI_STA_PS_PARAM_RX_WAKE_POLICY;
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
3840
		if (ret) {
3841
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3842
				    arvif->vdev_id, ret);
3843 3844
			goto err_peer_delete;
		}
3845

M
Michal Kazior 已提交
3846
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
3847
		if (ret) {
M
Michal Kazior 已提交
3848
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
3849
				    arvif->vdev_id, ret);
3850 3851
			goto err_peer_delete;
		}
3852

M
Michal Kazior 已提交
3853
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
3854
		if (ret) {
M
Michal Kazior 已提交
3855
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
3856
				    arvif->vdev_id, ret);
3857 3858
			goto err_peer_delete;
		}
3859 3860
	}

3861
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3862
	if (ret) {
3863
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3864
			    arvif->vdev_id, ret);
3865 3866
		goto err_peer_delete;
	}
3867

3868
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3869
	if (ret) {
3870
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3871
			    arvif->vdev_id, ret);
3872 3873
		goto err_peer_delete;
	}
3874

3875 3876 3877 3878 3879 3880 3881
	arvif->txpower = vif->bss_conf.txpower;
	ret = ath10k_mac_txpower_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
		goto err_peer_delete;
	}

3882
	mutex_unlock(&ar->conf_mutex);
3883 3884 3885 3886 3887 3888 3889 3890
	return 0;

err_peer_delete:
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
		ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);

err_vdev_delete:
	ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
B
Ben Greear 已提交
3891
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3892
	list_del(&arvif->list);
3893 3894

err:
3895 3896 3897 3898 3899 3900
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

3901 3902
	mutex_unlock(&ar->conf_mutex);

3903 3904 3905 3906 3907 3908 3909 3910 3911 3912
	return ret;
}

static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

3913
	cancel_work_sync(&arvif->ap_csa_work);
3914
	cancel_delayed_work_sync(&arvif->connection_loss_work);
3915

3916 3917
	mutex_lock(&ar->conf_mutex);

3918
	spin_lock_bh(&ar->data_lock);
3919
	ath10k_mac_vif_beacon_cleanup(arvif);
3920 3921
	spin_unlock_bh(&ar->data_lock);

3922 3923
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
3924
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3925 3926
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
3927
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3928
	list_del(&arvif->list);
3929 3930

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3931 3932
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
3933
		if (ret)
3934
			ath10k_warn(ar, "failed to submit AP self-peer removal on vdev %i: %d\n",
3935
				    arvif->vdev_id, ret);
3936 3937 3938 3939

		kfree(arvif->u.ap.noa_data);
	}

3940
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3941 3942
		   arvif->vdev_id);

3943 3944
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3945
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3946
			    arvif->vdev_id, ret);
3947

3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_wait_for_peer_deleted(ar, arvif->vdev_id,
						   vif->addr);
		if (ret)
			ath10k_warn(ar, "failed to remove AP self-peer on vdev %i: %d\n",
				    arvif->vdev_id, ret);

		spin_lock_bh(&ar->data_lock);
		ar->num_peers--;
		spin_unlock_bh(&ar->data_lock);
	}

3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994
	ath10k_peer_cleanup(ar, arvif->vdev_id);

	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
	(FIF_PROMISC_IN_BSS |			\
	FIF_ALLMULTI |				\
	FIF_CONTROL |				\
	FIF_PSPOLL |				\
	FIF_OTHER_BSS |				\
	FIF_BCN_PRBRESP_PROMISC |		\
	FIF_PROBE_REQ |				\
	FIF_FCSFAIL)

static void ath10k_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *total_flags,
				    u64 multicast)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;
	ar->filter_flags = *total_flags;

3995 3996 3997
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009

	mutex_unlock(&ar->conf_mutex);
}

static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *info,
				    u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret = 0;
4010
	u32 vdev_param, pdev_param, slottime, preamble;
4011 4012 4013 4014 4015 4016 4017 4018

	mutex_lock(&ar->conf_mutex);

	if (changed & BSS_CHANGED_IBSS)
		ath10k_control_ibss(arvif, info, vif->addr);

	if (changed & BSS_CHANGED_BEACON_INT) {
		arvif->beacon_interval = info->beacon_int;
4019 4020
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4021
						arvif->beacon_interval);
4022
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4023 4024 4025
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

4026
		if (ret)
4027
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
4028
				    arvif->vdev_id, ret);
4029 4030 4031
	}

	if (changed & BSS_CHANGED_BEACON) {
4032
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4033 4034 4035
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

4036 4037
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
4038 4039
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
4040
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
4041
				    arvif->vdev_id, ret);
4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053

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

	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
				    arvif->vdev_id, ret);
4054 4055
	}

4056
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
4057 4058
		arvif->dtim_period = info->dtim_period;

4059
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4060 4061 4062
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

4063 4064
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4065 4066
						arvif->dtim_period);
		if (ret)
4067
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
4068
				    arvif->vdev_id, ret);
4069 4070 4071 4072 4073 4074 4075 4076 4077 4078
	}

	if (changed & BSS_CHANGED_SSID &&
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->u.ap.ssid_len = info->ssid_len;
		if (info->ssid_len)
			memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len);
		arvif->u.ap.hidden_ssid = info->hidden_ssid;
	}

4079 4080
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
4081 4082 4083 4084 4085

	if (changed & BSS_CHANGED_BEACON_ENABLED)
		ath10k_control_beaconing(arvif, info);

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
4086
		arvif->use_cts_prot = info->use_cts_prot;
4087
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
4088
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
4089

4090
		ret = ath10k_recalc_rtscts_prot(arvif);
4091
		if (ret)
4092
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
4093
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
4094 4095 4096 4097 4098 4099 4100

		vdev_param = ar->wmi.vdev_param->protection_mode;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						info->use_cts_prot ? 1 : 0);
		if (ret)
			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
					info->use_cts_prot, arvif->vdev_id, ret);
4101 4102 4103 4104 4105 4106 4107 4108 4109
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		if (info->use_short_slot)
			slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */

		else
			slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */

4110
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
4111 4112
			   arvif->vdev_id, slottime);

4113 4114
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4115 4116
						slottime);
		if (ret)
4117
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
4118
				    arvif->vdev_id, ret);
4119 4120 4121 4122 4123 4124 4125 4126
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		if (info->use_short_preamble)
			preamble = WMI_VDEV_PREAMBLE_SHORT;
		else
			preamble = WMI_VDEV_PREAMBLE_LONG;

4127
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4128 4129 4130
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

4131 4132
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4133 4134
						preamble);
		if (ret)
4135
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
4136
				    arvif->vdev_id, ret);
4137 4138 4139
	}

	if (changed & BSS_CHANGED_ASSOC) {
4140 4141 4142 4143 4144 4145 4146
		if (info->assoc) {
			/* Workaround: Make sure monitor vdev is not running
			 * when associating to prevent some firmware revisions
			 * (e.g. 10.1 and 10.2) from crashing.
			 */
			if (ar->monitor_started)
				ath10k_monitor_stop(ar);
4147
			ath10k_bss_assoc(hw, vif, info);
4148
			ath10k_monitor_recalc(ar);
4149 4150
		} else {
			ath10k_bss_disassoc(hw, vif);
4151
		}
4152 4153
	}

4154 4155 4156 4157 4158 4159 4160 4161 4162 4163
	if (changed & BSS_CHANGED_TXPOWER) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n",
			   arvif->vdev_id, info->txpower);

		arvif->txpower = info->txpower;
		ret = ath10k_mac_txpower_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
	}

4164
	if (changed & BSS_CHANGED_PS) {
4165 4166 4167
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
4168 4169 4170 4171 4172
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

4173 4174 4175 4176 4177
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
4178
			  struct ieee80211_scan_request *hw_req)
4179 4180 4181
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4182
	struct cfg80211_scan_request *req = &hw_req->req;
4183 4184 4185 4186 4187 4188 4189
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		reinit_completion(&ar->scan.started);
		reinit_completion(&ar->scan.completed);
		ar->scan.state = ATH10K_SCAN_STARTING;
		ar->scan.is_roc = false;
		ar->scan.vdev_id = arvif->vdev_id;
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
4202
		ret = -EBUSY;
4203
		break;
4204 4205 4206
	}
	spin_unlock_bh(&ar->data_lock);

4207 4208 4209
	if (ret)
		goto exit;

4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228
	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;

	if (!req->no_cck)
		arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES;

	if (req->ie_len) {
		arg.ie_len = req->ie_len;
		memcpy(arg.ie, req->ie, arg.ie_len);
	}

	if (req->n_ssids) {
		arg.n_ssids = req->n_ssids;
		for (i = 0; i < arg.n_ssids; i++) {
			arg.ssids[i].len  = req->ssids[i].ssid_len;
			arg.ssids[i].ssid = req->ssids[i].ssid;
		}
4229 4230
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
4231 4232 4233 4234 4235 4236 4237 4238 4239 4240
	}

	if (req->n_channels) {
		arg.n_channels = req->n_channels;
		for (i = 0; i < arg.n_channels; i++)
			arg.channels[i] = req->channels[i]->center_freq;
	}

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
4241
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
4242
		spin_lock_bh(&ar->data_lock);
4243
		ar->scan.state = ATH10K_SCAN_IDLE;
4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257
		spin_unlock_bh(&ar->data_lock);
	}

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);
4258
	ath10k_scan_abort(ar);
4259
	mutex_unlock(&ar->conf_mutex);
4260 4261

	cancel_delayed_work_sync(&ar->scan.timeout);
4262 4263
}

4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297
static void ath10k_set_key_h_def_keyidx(struct ath10k *ar,
					struct ath10k_vif *arvif,
					enum set_key_cmd cmd,
					struct ieee80211_key_conf *key)
{
	u32 vdev_param = arvif->ar->wmi.vdev_param->def_keyid;
	int ret;

	/* 10.1 firmware branch requires default key index to be set to group
	 * key index after installing it. Otherwise FW/HW Txes corrupted
	 * frames with multi-vif APs. This is not required for main firmware
	 * branch (e.g. 636).
	 *
	 * FIXME: This has been tested only in AP. It remains unknown if this
	 * is required for multi-vif STA interfaces on 10.1 */

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

	if (key->cipher == WLAN_CIPHER_SUITE_WEP40)
		return;

	if (key->cipher == WLAN_CIPHER_SUITE_WEP104)
		return;

	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		return;

	if (cmd != SET_KEY)
		return;

	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					key->keyidx);
	if (ret)
4298
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
4299
			    arvif->vdev_id, ret);
4300 4301
}

4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312
static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;
4313
	u32 flags = 0;
4314

4315 4316 4317 4318
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;

4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340
	if (key->keyidx > WMI_MAX_KEY_INDEX)
		return -ENOSPC;

	mutex_lock(&ar->conf_mutex);

	if (sta)
		peer_addr = sta->addr;
	else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
		peer_addr = vif->bss_conf.bssid;
	else
		peer_addr = vif->addr;

	key->hw_key_idx = key->keyidx;

	/* the peer should not disappear in mid-way (unless FW goes awry) since
	 * we already hold conf_mutex. we just make sure its there now. */
	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer) {
		if (cmd == SET_KEY) {
4341
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
4342 4343 4344 4345 4346 4347 4348 4349 4350 4351
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

M
Michal Kazior 已提交
4352 4353 4354 4355 4356
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;

4357 4358 4359 4360 4361 4362 4363 4364
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;

		if (cmd == DISABLE_KEY)
			ath10k_clear_vdev_key(arvif, key);
4365

4366 4367 4368 4369 4370 4371 4372 4373
		/* When WEP keys are uploaded it's possible that there are
		 * stations associated already (e.g. when merging) without any
		 * keys. Static WEP needs an explicit per-peer key upload.
		 */
		if (vif->type == NL80211_IFTYPE_ADHOC &&
		    cmd == SET_KEY)
			ath10k_mac_vif_update_wep_key(arvif, key);

4374 4375 4376 4377 4378 4379 4380 4381
		/* 802.1x never sets the def_wep_key_idx so each set_key()
		 * call changes default tx key.
		 *
		 * Static WEP sets def_wep_key_idx via .set_default_unicast_key
		 * after first set_key().
		 */
		if (cmd == SET_KEY && arvif->def_wep_key_idx == -1)
			flags |= WMI_KEY_TX_USAGE;
4382

M
Michal Kazior 已提交
4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399
		/* mac80211 uploads static WEP keys as groupwise while fw/hw
		 * requires pairwise keys for non-self peers, i.e. BSSID in STA
		 * mode and associated stations in AP/IBSS.
		 *
		 * Static WEP keys for peer_addr=vif->addr and 802.1X WEP keys
		 * work fine when mapped directly from mac80211.
		 *
		 * Note: When installing first static WEP groupwise key (which
		 * should be pairwise) def_wep_key_idx isn't known yet (it's
		 * equal to -1).  Since .set_default_unicast_key is called only
		 * for static WEP it's used to re-upload the key as pairwise.
		 */
		if (arvif->def_wep_key_idx >= 0 &&
		    memcmp(peer_addr, arvif->vif->addr, ETH_ALEN)) {
			flags &= ~WMI_KEY_GROUP;
			flags |= WMI_KEY_PAIRWISE;
		}
4400
	}
4401

4402
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
4403
	if (ret) {
4404
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
4405
			    arvif->vdev_id, peer_addr, ret);
4406 4407 4408
		goto exit;
	}

4409 4410
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

4411 4412 4413 4414 4415 4416 4417 4418
	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	if (peer && cmd == SET_KEY)
		peer->keys[key->keyidx] = key;
	else if (peer && cmd == DISABLE_KEY)
		peer->keys[key->keyidx] = NULL;
	else if (peer == NULL)
		/* impossible unless FW goes crazy */
4419
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
4420 4421 4422 4423 4424 4425 4426
	spin_unlock_bh(&ar->data_lock);

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
					   int keyidx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

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

	if (arvif->ar->state != ATH10K_STATE_ON)
		goto unlock;

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
		   arvif->vdev_id, keyidx);

	ret = ath10k_wmi_vdev_set_param(arvif->ar,
					arvif->vdev_id,
					arvif->ar->wmi.vdev_param->def_keyid,
					keyidx);

	if (ret) {
		ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
			    arvif->vdev_id,
			    ret);
		goto unlock;
	}

	arvif->def_wep_key_idx = keyidx;
4456 4457 4458 4459 4460 4461 4462 4463

	ret = ath10k_mac_vif_sta_fix_wep_key(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to fix sta wep key on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto unlock;
	}

4464 4465 4466 4467
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495
static void ath10k_sta_rc_update_wk(struct work_struct *wk)
{
	struct ath10k *ar;
	struct ath10k_vif *arvif;
	struct ath10k_sta *arsta;
	struct ieee80211_sta *sta;
	u32 changed, bw, nss, smps;
	int err;

	arsta = container_of(wk, struct ath10k_sta, update_wk);
	sta = container_of((void *)arsta, struct ieee80211_sta, drv_priv);
	arvif = arsta->arvif;
	ar = arvif->ar;

	spin_lock_bh(&ar->data_lock);

	changed = arsta->changed;
	arsta->changed = 0;

	bw = arsta->bw;
	nss = arsta->nss;
	smps = arsta->smps;

	spin_unlock_bh(&ar->data_lock);

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_RC_BW_CHANGED) {
4496
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
4497 4498 4499 4500 4501
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
4502
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
4503 4504 4505 4506
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
4507
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
4508 4509 4510 4511 4512
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
4513
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
4514 4515 4516 4517
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
4518
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
4519 4520 4521 4522 4523
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
4524
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
4525 4526 4527
				    sta->addr, smps, err);
	}

4528 4529 4530
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
	    changed & IEEE80211_RC_NSS_CHANGED) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
4531 4532
			   sta->addr);

M
Michal Kazior 已提交
4533
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
4534
		if (err)
4535
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
4536 4537 4538
				    sta->addr);
	}

4539 4540 4541
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
4542 4543
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
4544 4545 4546 4547 4548
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4549
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4550 4551 4552 4553 4554 4555 4556 4557 4558 4559
		return 0;

	if (ar->num_stations >= ar->max_num_stations)
		return -ENOBUFS;

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
4560 4561
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
4562 4563 4564 4565 4566
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4567
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4568 4569 4570 4571 4572
		return;

	ar->num_stations--;
}

4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625
struct ath10k_mac_tdls_iter_data {
	u32 num_tdls_stations;
	struct ieee80211_vif *curr_vif;
};

static void ath10k_mac_tdls_vif_stations_count_iter(void *data,
						    struct ieee80211_sta *sta)
{
	struct ath10k_mac_tdls_iter_data *iter_data = data;
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;

	if (sta->tdls && sta_vif == iter_data->curr_vif)
		iter_data->num_tdls_stations++;
}

static int ath10k_mac_tdls_vif_stations_count(struct ieee80211_hw *hw,
					      struct ieee80211_vif *vif)
{
	struct ath10k_mac_tdls_iter_data data = {};

	data.curr_vif = vif;

	ieee80211_iterate_stations_atomic(hw,
					  ath10k_mac_tdls_vif_stations_count_iter,
					  &data);
	return data.num_tdls_stations;
}

static void ath10k_mac_tdls_vifs_count_iter(void *data, u8 *mac,
					    struct ieee80211_vif *vif)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int *num_tdls_vifs = data;

	if (vif->type != NL80211_IFTYPE_STATION)
		return;

	if (ath10k_mac_tdls_vif_stations_count(arvif->ar->hw, vif) > 0)
		(*num_tdls_vifs)++;
}

static int ath10k_mac_tdls_vifs_count(struct ieee80211_hw *hw)
{
	int num_tdls_vifs = 0;

	ieee80211_iterate_active_interfaces_atomic(hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_tdls_vifs_count_iter,
						   &num_tdls_vifs);
	return num_tdls_vifs;
}

4626 4627 4628 4629 4630 4631 4632 4633
static int ath10k_sta_state(struct ieee80211_hw *hw,
			    struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta,
			    enum ieee80211_sta_state old_state,
			    enum ieee80211_sta_state new_state)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4634
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4635 4636
	int ret = 0;

4637 4638 4639 4640 4641 4642 4643
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
		memset(arsta, 0, sizeof(*arsta));
		arsta->arvif = arvif;
		INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
	}

4644 4645 4646 4647 4648
	/* cancel must be done outside the mutex to avoid deadlock */
	if ((old_state == IEEE80211_STA_NONE &&
	     new_state == IEEE80211_STA_NOTEXIST))
		cancel_work_sync(&arsta->update_wk);

4649 4650 4651
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
4652
	    new_state == IEEE80211_STA_NONE) {
4653 4654 4655
		/*
		 * New station addition.
		 */
4656 4657 4658 4659
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

4660 4661 4662 4663 4664
		ath10k_dbg(ar, ATH10K_DBG_MAC,
			   "mac vdev %d peer create %pM (new sta) sta %d / %d peer %d / %d\n",
			   arvif->vdev_id, sta->addr,
			   ar->num_stations + 1, ar->max_num_stations,
			   ar->num_peers + 1, ar->max_num_peers);
4665

M
Marek Puzyniak 已提交
4666
		ret = ath10k_mac_inc_num_stations(arvif, sta);
4667 4668 4669
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
4670 4671 4672
			goto exit;
		}

4673 4674 4675
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

4676
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
4677
					 peer_type);
M
Michal Kazior 已提交
4678
		if (ret) {
4679
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
4680
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
4681
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
4682 4683
			goto exit;
		}
4684

4685 4686
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4687 4688 4689 4690 4691 4692 4693 4694
			WARN_ON(arvif->is_started);

			ret = ath10k_vdev_start(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to start vdev %i: %d\n",
					    arvif->vdev_id, ret);
				WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
							   sta->addr));
M
Marek Puzyniak 已提交
4695
				ath10k_mac_dec_num_stations(arvif, sta);
4696 4697 4698 4699 4700
				goto exit;
			}

			arvif->is_started = true;
		}
4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747

		if (!sta->tdls)
			goto exit;

		num_tdls_stations = ath10k_mac_tdls_vif_stations_count(hw, vif);
		num_tdls_vifs = ath10k_mac_tdls_vifs_count(hw);

		if (num_tdls_vifs >= ar->max_num_tdls_vdevs &&
		    num_tdls_stations == 0) {
			ath10k_warn(ar, "vdev %i exceeded maximum number of tdls vdevs %i\n",
				    arvif->vdev_id, ar->max_num_tdls_vdevs);
			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
			ath10k_mac_dec_num_stations(arvif, sta);
			ret = -ENOBUFS;
			goto exit;
		}

		if (num_tdls_stations == 0) {
			/* This is the first tdls peer in current vif */
			enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;

			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
			if (ret) {
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
					    arvif->vdev_id, ret);
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
				goto exit;
			}
		}

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_PEERING);
		if (ret) {
			ath10k_warn(ar,
				    "failed to update tdls peer %pM for vdev %d when adding a new sta: %i\n",
				    sta->addr, arvif->vdev_id, ret);
			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
			ath10k_mac_dec_num_stations(arvif, sta);

			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
		}
4748 4749 4750 4751 4752
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
4753
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4754 4755
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
4756

4757 4758
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4759 4760 4761 4762 4763 4764 4765 4766 4767 4768
			WARN_ON(!arvif->is_started);

			ret = ath10k_vdev_stop(arvif);
			if (ret)
				ath10k_warn(ar, "failed to stop vdev %i: %d\n",
					    arvif->vdev_id, ret);

			arvif->is_started = false;
		}

4769 4770
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
4771
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
4772
				    sta->addr, arvif->vdev_id, ret);
4773

M
Marek Puzyniak 已提交
4774
		ath10k_mac_dec_num_stations(arvif, sta);
4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788

		if (!sta->tdls)
			goto exit;

		if (ath10k_mac_tdls_vif_stations_count(hw, vif))
			goto exit;

		/* This was the last tdls peer in current vif */
		ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
						      WMI_TDLS_DISABLE);
		if (ret) {
			ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
				    arvif->vdev_id, ret);
		}
4789 4790 4791 4792 4793 4794 4795
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
4796
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
4797 4798
			   sta->addr);

M
Michal Kazior 已提交
4799
		ret = ath10k_station_assoc(ar, vif, sta, false);
4800
		if (ret)
4801
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
4802
				    sta->addr, arvif->vdev_id, ret);
4803
	} else if (old_state == IEEE80211_STA_ASSOC &&
4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

		ret = ath10k_station_assoc(ar, vif, sta, false);
		if (ret) {
			ath10k_warn(ar, "failed to associate tdls station %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
			goto exit;
		}

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
		     vif->type == NL80211_IFTYPE_ADHOC)) {
4828 4829 4830
		/*
		 * Disassociation.
		 */
4831
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
4832 4833
			   sta->addr);

M
Michal Kazior 已提交
4834
		ret = ath10k_station_disassoc(ar, vif, sta);
4835
		if (ret)
4836
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
4837
				    sta->addr, arvif->vdev_id, ret);
4838
	}
4839
exit:
4840 4841 4842 4843 4844
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
4845
				u16 ac, bool enable)
4846 4847
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4848 4849
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
4850 4851 4852
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
4853 4854
	lockdep_assert_held(&ar->conf_mutex);

4855 4856 4857 4858 4859 4860 4861
	if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
		return 0;

	switch (ac) {
	case IEEE80211_AC_VO:
		value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
4862 4863
		prio = 7;
		acc = 3;
4864 4865 4866 4867
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
4868 4869
		prio = 5;
		acc = 2;
4870 4871 4872 4873
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
4874 4875
		prio = 2;
		acc = 1;
4876 4877 4878 4879
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
4880 4881
		prio = 0;
		acc = 0;
4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893
		break;
	}

	if (enable)
		arvif->u.sta.uapsd |= value;
	else
		arvif->u.sta.uapsd &= ~value;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_UAPSD,
					  arvif->u.sta.uapsd);
	if (ret) {
4894
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906
		goto exit;
	}

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
	else
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_RX_WAKE_POLICY,
					  value);
	if (ret)
4907
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
4908

M
Michal Kazior 已提交
4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922
	ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945
	if (test_bit(WMI_SERVICE_STA_UAPSD_BASIC_AUTO_TRIG, ar->wmi.svc_map) ||
	    test_bit(WMI_SERVICE_STA_UAPSD_VAR_AUTO_TRIG, ar->wmi.svc_map)) {
		/* Only userspace can make an educated decision when to send
		 * trigger frame. The following effectively disables u-UAPSD
		 * autotrigger in firmware (which is enabled by default
		 * provided the autotrigger service is available).
		 */

		arg.wmm_ac = acc;
		arg.user_priority = prio;
		arg.service_interval = 0;
		arg.suspend_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;
		arg.delay_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;

		ret = ath10k_wmi_vdev_sta_uapsd(ar, arvif->vdev_id,
						arvif->bssid, &arg, 1);
		if (ret) {
			ath10k_warn(ar, "failed to set uapsd auto trigger %d\n",
				    ret);
			return ret;
		}
	}

4946 4947 4948 4949 4950 4951 4952 4953 4954
exit:
	return ret;
}

static int ath10k_conf_tx(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif, u16 ac,
			  const struct ieee80211_tx_queue_params *params)
{
	struct ath10k *ar = hw->priv;
4955
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4956 4957 4958 4959 4960 4961 4962
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
4963
		p = &arvif->wmm_params.ac_vo;
4964 4965
		break;
	case IEEE80211_AC_VI:
4966
		p = &arvif->wmm_params.ac_vi;
4967 4968
		break;
	case IEEE80211_AC_BE:
4969
		p = &arvif->wmm_params.ac_be;
4970 4971
		break;
	case IEEE80211_AC_BK:
4972
		p = &arvif->wmm_params.ac_bk;
4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991
		break;
	}

	if (WARN_ON(!p)) {
		ret = -EINVAL;
		goto exit;
	}

	p->cwmin = params->cw_min;
	p->cwmax = params->cw_max;
	p->aifs = params->aifs;

	/*
	 * The channel time duration programmed in the HW is in absolute
	 * microseconds, while mac80211 gives the txop in units of
	 * 32 microseconds.
	 */
	p->txop = params->txop * 32;

4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008
	if (ar->wmi.ops->gen_vdev_wmm_conf) {
		ret = ath10k_wmi_vdev_wmm_conf(ar, arvif->vdev_id,
					       &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set vdev wmm params on vdev %i: %d\n",
				    arvif->vdev_id, ret);
			goto exit;
		}
	} else {
		/* This won't work well with multi-interface cases but it's
		 * better than nothing.
		 */
		ret = ath10k_wmi_pdev_set_wmm_params(ar, &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
			goto exit;
		}
5009 5010 5011 5012
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
5013
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

#define ATH10K_ROC_TIMEOUT_HZ (2*HZ)

static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_channel *chan,
				    int duration,
				    enum ieee80211_roc_type type)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
5031
	int ret = 0;
5032 5033 5034 5035

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		reinit_completion(&ar->scan.started);
		reinit_completion(&ar->scan.completed);
		reinit_completion(&ar->scan.on_channel);
		ar->scan.state = ATH10K_SCAN_STARTING;
		ar->scan.is_roc = true;
		ar->scan.vdev_id = arvif->vdev_id;
		ar->scan.roc_freq = chan->center_freq;
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
5050
		ret = -EBUSY;
5051
		break;
5052 5053 5054
	}
	spin_unlock_bh(&ar->data_lock);

5055 5056 5057
	if (ret)
		goto exit;

M
Michal Kazior 已提交
5058 5059
	duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);

5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073
	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;
	arg.n_channels = 1;
	arg.channels[0] = chan->center_freq;
	arg.dwell_time_active = duration;
	arg.dwell_time_passive = duration;
	arg.max_scan_time = 2 * duration;
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
5074
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
5075
		spin_lock_bh(&ar->data_lock);
5076
		ar->scan.state = ATH10K_SCAN_IDLE;
5077 5078 5079 5080 5081 5082
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
5083
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
5084 5085 5086

		ret = ath10k_scan_stop(ar);
		if (ret)
5087
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
5088

5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103
		ret = -ETIMEDOUT;
		goto exit;
	}

	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);
5104
	ath10k_scan_abort(ar);
5105 5106
	mutex_unlock(&ar->conf_mutex);

5107 5108
	cancel_delayed_work_sync(&ar->scan.timeout);

5109 5110 5111 5112 5113 5114 5115 5116
	return 0;
}

/*
 * Both RTS and Fragmentation threshold are interface-specific
 * in ath10k, but device-specific in mac80211.
 */

5117 5118 5119 5120 5121
static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
M
Michal Kazior 已提交
5122

5123
	mutex_lock(&ar->conf_mutex);
5124
	list_for_each_entry(arvif, &ar->arvifs, list) {
5125
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
5126 5127 5128 5129
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
5130
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5131 5132 5133 5134
				    arvif->vdev_id, ret);
			break;
		}
	}
5135 5136
	mutex_unlock(&ar->conf_mutex);

5137
	return ret;
5138 5139
}

5140 5141
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
5142 5143
{
	struct ath10k *ar = hw->priv;
5144
	bool skip;
5145 5146 5147 5148 5149 5150 5151
	int ret;

	/* mac80211 doesn't care if we really xmit queued frames or not
	 * we'll collect those frames either way if we stop/delete vdevs */
	if (drop)
		return;

M
Michal Kazior 已提交
5152 5153
	mutex_lock(&ar->conf_mutex);

5154 5155 5156
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

5157
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
5158
			bool empty;
5159

5160
			spin_lock_bh(&ar->htt.tx_lock);
5161
			empty = (ar->htt.num_pending_tx == 0);
5162
			spin_unlock_bh(&ar->htt.tx_lock);
5163

M
Michal Kazior 已提交
5164 5165 5166
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
5167 5168

			(empty || skip);
5169
		}), ATH10K_FLUSH_TIMEOUT_HZ);
5170 5171

	if (ret <= 0 || skip)
5172
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
5173
			    skip, ar->state, ret);
M
Michal Kazior 已提交
5174

5175
skip:
M
Michal Kazior 已提交
5176
	mutex_unlock(&ar->conf_mutex);
5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187
}

/* TODO: Implement this function properly
 * For now it is needed to reply to Probe Requests in IBSS mode.
 * Propably we need this information from FW.
 */
static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
{
	return 1;
}

5188 5189
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
5190 5191 5192
{
	struct ath10k *ar = hw->priv;

5193 5194 5195
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

5196 5197 5198 5199 5200
	mutex_lock(&ar->conf_mutex);

	/* If device failed to restart it will be in a different state, e.g.
	 * ATH10K_STATE_WEDGED */
	if (ar->state == ATH10K_STATE_RESTARTED) {
5201
		ath10k_info(ar, "device successfully recovered\n");
5202
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
5203
		ieee80211_wake_queues(ar->hw);
5204 5205 5206 5207 5208
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath10k *ar = hw->priv;
	struct ieee80211_supported_band *sband;
	struct survey_info *ar_survey = &ar->survey[idx];
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
		sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];

	if (!sband || idx >= sband->n_channels) {
		ret = -ENOENT;
		goto exit;
	}

	spin_lock_bh(&ar->data_lock);
	memcpy(survey, ar_survey, sizeof(*survey));
	spin_unlock_bh(&ar->data_lock);

	survey->channel = &sband->channels[idx];

5239 5240 5241
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
5242 5243 5244 5245 5246
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270
/* Check if only one bit set */
static int ath10k_check_single_mask(u32 mask)
{
	int bit;

	bit = ffs(mask);
	if (!bit)
		return 0;

	mask &= ~BIT(bit - 1);
	if (mask)
		return 2;

	return 1;
}

static bool
ath10k_default_bitrate_mask(struct ath10k *ar,
			    enum ieee80211_band band,
			    const struct cfg80211_bitrate_mask *mask)
{
	u32 legacy = 0x00ff;
	u8 ht = 0xff, i;
	u16 vht = 0x3ff;
5271 5272 5273 5274
	u16 nrf = ar->num_rf_chains;

	if (ar->cfg_tx_chainmask)
		nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289

	switch (band) {
	case IEEE80211_BAND_2GHZ:
		legacy = 0x00fff;
		vht = 0;
		break;
	case IEEE80211_BAND_5GHZ:
		break;
	default:
		return false;
	}

	if (mask->control[band].legacy != legacy)
		return false;

5290
	for (i = 0; i < nrf; i++)
5291 5292 5293
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

5294
	for (i = 0; i < nrf; i++)
5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317
		if (mask->control[band].vht_mcs[i] != vht)
			return false;

	return true;
}

static bool
ath10k_bitrate_mask_nss(const struct cfg80211_bitrate_mask *mask,
			enum ieee80211_band band,
			u8 *fixed_nss)
{
	int ht_nss = 0, vht_nss = 0, i;

	/* check legacy */
	if (ath10k_check_single_mask(mask->control[band].legacy))
		return false;

	/* check HT */
	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
		if (mask->control[band].ht_mcs[i] == 0xff)
			continue;
		else if (mask->control[band].ht_mcs[i] == 0x00)
			break;
5318 5319

		return false;
5320 5321 5322 5323 5324 5325 5326 5327 5328 5329
	}

	ht_nss = i;

	/* check VHT */
	for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
		if (mask->control[band].vht_mcs[i] == 0x03ff)
			continue;
		else if (mask->control[band].vht_mcs[i] == 0x0000)
			break;
5330 5331

		return false;
5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387
	}

	vht_nss = i;

	if (ht_nss > 0 && vht_nss > 0)
		return false;

	if (ht_nss)
		*fixed_nss = ht_nss;
	else if (vht_nss)
		*fixed_nss = vht_nss;
	else
		return false;

	return true;
}

static bool
ath10k_bitrate_mask_correct(const struct cfg80211_bitrate_mask *mask,
			    enum ieee80211_band band,
			    enum wmi_rate_preamble *preamble)
{
	int legacy = 0, ht = 0, vht = 0, i;

	*preamble = WMI_RATE_PREAMBLE_OFDM;

	/* check legacy */
	legacy = ath10k_check_single_mask(mask->control[band].legacy);
	if (legacy > 1)
		return false;

	/* check HT */
	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
		ht += ath10k_check_single_mask(mask->control[band].ht_mcs[i]);
	if (ht > 1)
		return false;

	/* check VHT */
	for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
		vht += ath10k_check_single_mask(mask->control[band].vht_mcs[i]);
	if (vht > 1)
		return false;

	/* Currently we support only one fixed_rate */
	if ((legacy + ht + vht) != 1)
		return false;

	if (ht)
		*preamble = WMI_RATE_PREAMBLE_HT;
	else if (vht)
		*preamble = WMI_RATE_PREAMBLE_VHT;

	return true;
}

static bool
5388 5389
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
5390 5391 5392 5393
			 enum ieee80211_band band,
			 u8 *fixed_rate,
			 u8 *fixed_nss)
{
5394
	struct ieee80211_supported_band *sband;
5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407
	u8 rate = 0, pream = 0, nss = 0, i;
	enum wmi_rate_preamble preamble;

	/* Check if single rate correct */
	if (!ath10k_bitrate_mask_correct(mask, band, &preamble))
		return false;

	pream = preamble;

	switch (preamble) {
	case WMI_RATE_PREAMBLE_CCK:
	case WMI_RATE_PREAMBLE_OFDM:
		i = ffs(mask->control[band].legacy) - 1;
5408
		sband = &ar->mac.sbands[band];
5409

5410
		if (WARN_ON(i >= sband->n_bitrates))
5411 5412
			return false;

5413
		rate = sband->bitrates[i].hw_value;
5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442
		break;
	case WMI_RATE_PREAMBLE_HT:
		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
			if (mask->control[band].ht_mcs[i])
				break;

		if (i == IEEE80211_HT_MCS_MASK_LEN)
			return false;

		rate = ffs(mask->control[band].ht_mcs[i]) - 1;
		nss = i;
		break;
	case WMI_RATE_PREAMBLE_VHT:
		for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
			if (mask->control[band].vht_mcs[i])
				break;

		if (i == NL80211_VHT_NSS_MAX)
			return false;

		rate = ffs(mask->control[band].vht_mcs[i]) - 1;
		nss = i;
		break;
	}

	*fixed_nss = nss + 1;
	nss <<= 4;
	pream <<= 6;

5443
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
5444 5445 5446 5447 5448 5449 5450
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

5451 5452
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
5453 5454 5455 5456 5457 5458 5459 5460 5461
				      enum ieee80211_band band,
				      u8 *fixed_rate,
				      u8 *fixed_nss)
{
	/* First check full NSS mask, if we can simply limit NSS */
	if (ath10k_bitrate_mask_nss(mask, band, fixed_nss))
		return true;

	/* Next Check single rate is set */
5462
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
5463 5464 5465 5466
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
5467 5468
				       u8 fixed_nss,
				       u8 force_sgi)
5469 5470 5471 5472 5473 5474 5475 5476
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
5477 5478
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
5479 5480 5481
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
5482
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
5483

5484
	if (force_sgi)
5485
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
5486

5487 5488 5489 5490
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
5491
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503
			    fixed_rate, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_rate = fixed_rate;

	vdev_param = ar->wmi.vdev_param->nss;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_nss);

	if (ret) {
5504
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
5505 5506 5507 5508 5509 5510 5511
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

5512 5513 5514 5515 5516
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
5517
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
5518 5519 5520 5521 5522 5523 5524
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   const struct cfg80211_bitrate_mask *mask)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	enum ieee80211_band band = ar->hw->conf.chandef.chan->band;
	u8 fixed_rate = WMI_FIXED_RATE_NONE;
	u8 fixed_nss = ar->num_rf_chains;
5539 5540
	u8 force_sgi;

5541 5542 5543
	if (ar->cfg_tx_chainmask)
		fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

5544 5545 5546
	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
5547 5548

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
5549
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
5550 5551 5552 5553 5554
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

5555
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
5556
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
5557 5558 5559 5560 5561
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
5562 5563
}

5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574
static void ath10k_sta_rc_update(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 struct ieee80211_sta *sta,
				 u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
	u32 bw, smps;

	spin_lock_bh(&ar->data_lock);

5575
	ath10k_dbg(ar, ATH10K_DBG_MAC,
5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593
		   "mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n",
		   sta->addr, changed, sta->bandwidth, sta->rx_nss,
		   sta->smps_mode);

	if (changed & IEEE80211_RC_BW_CHANGED) {
		bw = WMI_PEER_CHWIDTH_20MHZ;

		switch (sta->bandwidth) {
		case IEEE80211_STA_RX_BW_20:
			bw = WMI_PEER_CHWIDTH_20MHZ;
			break;
		case IEEE80211_STA_RX_BW_40:
			bw = WMI_PEER_CHWIDTH_40MHZ;
			break;
		case IEEE80211_STA_RX_BW_80:
			bw = WMI_PEER_CHWIDTH_80MHZ;
			break;
		case IEEE80211_STA_RX_BW_160:
5594
			ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
5595
				    sta->bandwidth, sta->addr);
5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620
			bw = WMI_PEER_CHWIDTH_20MHZ;
			break;
		}

		arsta->bw = bw;
	}

	if (changed & IEEE80211_RC_NSS_CHANGED)
		arsta->nss = sta->rx_nss;

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
		smps = WMI_PEER_SMPS_PS_NONE;

		switch (sta->smps_mode) {
		case IEEE80211_SMPS_AUTOMATIC:
		case IEEE80211_SMPS_OFF:
			smps = WMI_PEER_SMPS_PS_NONE;
			break;
		case IEEE80211_SMPS_STATIC:
			smps = WMI_PEER_SMPS_STATIC;
			break;
		case IEEE80211_SMPS_DYNAMIC:
			smps = WMI_PEER_SMPS_DYNAMIC;
			break;
		case IEEE80211_SMPS_NUM_MODES:
5621
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
5622
				    sta->smps_mode, sta->addr);
5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636
			smps = WMI_PEER_SMPS_PS_NONE;
			break;
		}

		arsta->smps = smps;
	}

	arsta->changed |= changed;

	spin_unlock_bh(&ar->data_lock);

	ieee80211_queue_work(hw, &arsta->update_wk);
}

5637 5638 5639 5640 5641 5642 5643 5644 5645 5646
static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	/*
	 * FIXME: Return 0 for time being. Need to figure out whether FW
	 * has the API to fetch 64-bit local TSF
	 */

	return 0;
}

5647 5648 5649 5650 5651 5652
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       enum ieee80211_ampdu_mlme_action action,
			       struct ieee80211_sta *sta, u16 tid, u16 *ssn,
			       u8 buf_size)
{
5653
	struct ath10k *ar = hw->priv;
5654 5655
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

5656
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679
		   arvif->vdev_id, sta->addr, tid, action);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
	case IEEE80211_AMPDU_RX_STOP:
		/* HTT AddBa/DelBa events trigger mac80211 Rx BA session
		 * creation/removal. Do we need to verify this?
		 */
		return 0;
	case IEEE80211_AMPDU_TX_START:
	case IEEE80211_AMPDU_TX_STOP_CONT:
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		/* Firmware offloads Tx aggregation entirely so deny mac80211
		 * Tx aggregation requests.
		 */
		return -EOPNOTSUPP;
	}

	return -EINVAL;
}

5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
5692
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
5693 5694 5695 5696 5697 5698 5699
	.sta_state			= ath10k_sta_state,
	.conf_tx			= ath10k_conf_tx,
	.remain_on_channel		= ath10k_remain_on_channel,
	.cancel_remain_on_channel	= ath10k_cancel_remain_on_channel,
	.set_rts_threshold		= ath10k_set_rts_threshold,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
5700 5701
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
5702
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
5703
	.get_survey			= ath10k_get_survey,
5704
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
5705
	.sta_rc_update			= ath10k_sta_rc_update,
5706
	.get_tsf			= ath10k_get_tsf,
5707
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
5708 5709 5710
	.get_et_sset_count		= ath10k_debug_get_et_sset_count,
	.get_et_stats			= ath10k_debug_get_et_stats,
	.get_et_strings			= ath10k_debug_get_et_strings,
K
Kalle Valo 已提交
5711 5712 5713

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
5714
#ifdef CONFIG_PM
5715 5716
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
5717
#endif
5718 5719 5720
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758
};

#define CHAN2G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_2GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

#define CHAN5G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_5GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

static const struct ieee80211_channel ath10k_2ghz_channels[] = {
	CHAN2G(1, 2412, 0),
	CHAN2G(2, 2417, 0),
	CHAN2G(3, 2422, 0),
	CHAN2G(4, 2427, 0),
	CHAN2G(5, 2432, 0),
	CHAN2G(6, 2437, 0),
	CHAN2G(7, 2442, 0),
	CHAN2G(8, 2447, 0),
	CHAN2G(9, 2452, 0),
	CHAN2G(10, 2457, 0),
	CHAN2G(11, 2462, 0),
	CHAN2G(12, 2467, 0),
	CHAN2G(13, 2472, 0),
	CHAN2G(14, 2484, 0),
};

static const struct ieee80211_channel ath10k_5ghz_channels[] = {
5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777
	CHAN5G(36, 5180, 0),
	CHAN5G(40, 5200, 0),
	CHAN5G(44, 5220, 0),
	CHAN5G(48, 5240, 0),
	CHAN5G(52, 5260, 0),
	CHAN5G(56, 5280, 0),
	CHAN5G(60, 5300, 0),
	CHAN5G(64, 5320, 0),
	CHAN5G(100, 5500, 0),
	CHAN5G(104, 5520, 0),
	CHAN5G(108, 5540, 0),
	CHAN5G(112, 5560, 0),
	CHAN5G(116, 5580, 0),
	CHAN5G(120, 5600, 0),
	CHAN5G(124, 5620, 0),
	CHAN5G(128, 5640, 0),
	CHAN5G(132, 5660, 0),
	CHAN5G(136, 5680, 0),
	CHAN5G(140, 5700, 0),
5778
	CHAN5G(144, 5720, 0),
5779 5780 5781 5782 5783
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
5784 5785
};

M
Michal Kazior 已提交
5786
struct ath10k *ath10k_mac_create(size_t priv_size)
5787 5788 5789 5790
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
5791
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810
	if (!hw)
		return NULL;

	ar = hw->priv;
	ar->hw = hw;

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
	ieee80211_free_hw(ar->hw);
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_STATION)
		| BIT(NL80211_IFTYPE_P2P_CLIENT)
5811 5812 5813 5814 5815 5816
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
M
Michal Kazior 已提交
5817 5818 5819 5820
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
5821 5822 5823
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
5824 5825
};

5826
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_if_comb[] = {
	{
		.limits = ath10k_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_if_limits),
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
	},
5841 5842 5843
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
5844
	{
5845 5846
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
5847 5848 5849
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
5850
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
5851 5852 5853 5854 5855
		.radar_detect_widths =	BIT(NL80211_CHAN_WIDTH_20_NOHT) |
					BIT(NL80211_CHAN_WIDTH_20) |
					BIT(NL80211_CHAN_WIDTH_40) |
					BIT(NL80211_CHAN_WIDTH_80),
#endif
5856
	},
5857 5858 5859 5860 5861 5862
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
5863
	u32 val;
5864
	int i;
5865 5866 5867 5868

	vht_cap.vht_supported = 1;
	vht_cap.cap = ar->vht_cap_info;

5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

5887 5888 5889 5890 5891 5892 5893
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if (i < ar->num_rf_chains)
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
	}
5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955

	vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
	vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);

	return vht_cap;
}

static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
	int i;
	struct ieee80211_sta_ht_cap ht_cap = {0};

	if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
		return ht_cap;

	ht_cap.ht_supported = 1;
	ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
	ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;

	if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;

	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
		u32 smps;

		smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
		smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;

		ht_cap.cap |= smps;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
		ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;

	if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
		u32 stbc;

		stbc   = ar->ht_cap_info;
		stbc  &= WMI_HT_CAP_RX_STBC;
		stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
		stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc  &= IEEE80211_HT_CAP_RX_STBC;

		ht_cap.cap |= stbc;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
		ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
		ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;

	/* max AMSDU is implicitly taken from vht_cap_info */
	if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
		ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;

5956
	for (i = 0; i < ar->num_rf_chains; i++)
5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987
		ht_cap.mcs.rx_mask[i] = 0xFF;

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (arvif->vdev_id == arvif_iter->vdev_id)
		arvif_iter->arvif = arvif;
}

struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_vif_iter arvif_iter;
	u32 flags;

	memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
	arvif_iter.vdev_id = vdev_id;

	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   flags,
						   ath10k_get_arvif_iter,
						   &arvif_iter);
	if (!arvif_iter.arvif) {
5988
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
5989 5990 5991 5992 5993 5994 5995 5996
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
5997 5998 5999 6000 6001 6002 6003
	static const u32 cipher_suites[] = {
		WLAN_CIPHER_SUITE_WEP40,
		WLAN_CIPHER_SUITE_WEP104,
		WLAN_CIPHER_SUITE_TKIP,
		WLAN_CIPHER_SUITE_CCMP,
		WLAN_CIPHER_SUITE_AES_CMAC,
	};
6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);

	SET_IEEE80211_DEV(ar->hw, ar->dev);

	ht_cap = ath10k_get_ht_cap(ar);
	vht_cap = ath10k_create_vht_cap(ar);

	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		channels = kmemdup(ath10k_2ghz_channels,
				   sizeof(ath10k_2ghz_channels),
				   GFP_KERNEL);
M
Michal Kazior 已提交
6021 6022 6023 6024
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
6025 6026 6027 6028 6029 6030 6031 6032

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

6033 6034
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
6035 6036 6037 6038 6039 6040 6041 6042 6043

		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
M
Michal Kazior 已提交
6044 6045
			ret = -ENOMEM;
			goto err_free;
6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059
		}

		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
6060 6061
		BIT(NL80211_IFTYPE_AP);

6062 6063 6064
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

6065 6066
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
6067
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
6068 6069
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
6070 6071 6072 6073 6074 6075 6076

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
6077
			IEEE80211_HW_AP_LINK_PS |
6078
			IEEE80211_HW_SPECTRUM_MGMT |
6079 6080
			IEEE80211_HW_SW_CRYPTO_CONTROL |
			IEEE80211_HW_CONNECTION_MONITOR;
6081

6082 6083
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;

6084
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
6085
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
6086 6087 6088 6089 6090 6091 6092 6093 6094 6095

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
		ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
		ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
	}

	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
	ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;

	ar->hw->vif_data_size = sizeof(struct ath10k_vif);
6096
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
6097 6098 6099

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112
	if (test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) {
		ar->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;

		/* Firmware delivers WPS/P2P Probe Requests frames to driver so
		 * that userspace (e.g. wpa_supplicant/hostapd) can generate
		 * correct Probe Responses. This is more of a hack advert..
		 */
		ar->hw->wiphy->probe_resp_offload |=
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
	}

6113 6114 6115
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

6116
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
6117
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
6118 6119 6120
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
6121 6122
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

6123 6124
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

6125 6126 6127 6128 6129 6130
	ret = ath10k_wow_init(ar);
	if (ret) {
		ath10k_warn(ar, "failed to init wow: %d\n", ret);
		goto err_free;
	}

6131 6132 6133 6134 6135 6136
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
	ar->hw->queues = 4;

6137 6138 6139
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
	case ATH10K_FW_WMI_OP_VERSION_TLV:
6140 6141 6142
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
6143
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
6144 6145 6146
		break;
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
6147
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
6148 6149 6150 6151 6152 6153 6154 6155 6156
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
6157
	}
6158

6159 6160
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
6161 6162 6163 6164 6165 6166 6167
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
		/* Init ath dfs pattern detector */
		ar->ath_common.debug_mask = ATH_DBG_DFS;
		ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
							     NL80211_DFS_UNSET);

		if (!ar->dfs_detector)
6168
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
6169 6170
	}

6171 6172 6173
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
6174
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
6175
		goto err_free;
6176 6177
	}

6178 6179 6180
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

6181 6182
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
6183
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
6184
		goto err_free;
6185 6186 6187 6188 6189 6190
	}

	if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
		ret = regulatory_hint(ar->hw->wiphy,
				      ar->ath_common.regulatory.alpha2);
		if (ret)
M
Michal Kazior 已提交
6191
			goto err_unregister;
6192 6193 6194
	}

	return 0;
M
Michal Kazior 已提交
6195 6196

err_unregister:
6197
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
6198 6199 6200 6201
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

6202 6203 6204 6205 6206 6207 6208
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

J
Janusz Dziedzic 已提交
6209 6210 6211
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

6212 6213 6214 6215 6216
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}