mac.c 121.9 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"
30 31 32 33 34 35 36 37 38 39

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

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
			   const u8 *macaddr)
{
40
	struct ath10k *ar = arvif->ar;
41 42 43 44 45 46 47 48
	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
		.macaddr = macaddr,
	};

M
Michal Kazior 已提交
49 50
	lockdep_assert_held(&arvif->ar->conf_mutex);

51 52 53 54 55 56 57 58
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		arg.key_flags = WMI_KEY_PAIRWISE;
	else
		arg.key_flags = WMI_KEY_GROUP;

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
59 60 61 62
		if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
		else
			key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
		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;
		/* AP/IBSS mode requires self-key to be groupwise
		 * Otherwise pairwise key must be set */
		if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN))
			arg.key_flags = WMI_KEY_PAIRWISE;
		break;
	default:
78
		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
		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,
			      const u8 *macaddr)
{
	struct ath10k *ar = arvif->ar;
	int ret;

M
Michal Kazior 已提交
98 99
	lockdep_assert_held(&ar->conf_mutex);

100
	reinit_completion(&ar->install_key_done);
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172

	ret = ath10k_send_key(arvif, key, cmd, macaddr);
	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;

	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;

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
					 addr);
		if (ret)
			return ret;

		peer->keys[i] = arvif->wep_keys[i];
	}

	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;

	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;

		ret = ath10k_install_key(arvif, peer->keys[i],
					 DISABLE_KEY, addr);
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
173
			ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201
				    i, ret);

		peer->keys[i] = NULL;
	}

	return first_errno;
}

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;

	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
202
					ether_addr_copy(addr, peer->addr);
203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
					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;

		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr);
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
221
			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
222
				    addr, ret);
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
	}

	return first_errno;
}

/*********************/
/* 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:
			phymode = MODE_11G;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
249 250
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271
		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;
272 273
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329
		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;
	}
}

static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_create(ar, vdev_id, addr);
330
	if (ret) {
331
		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
332
			    addr, vdev_id, ret);
333
		return ret;
334
	}
335 336

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
337
	if (ret) {
338
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
339
			    addr, vdev_id, ret);
340
		return ret;
341
	}
342 343 344
	spin_lock_bh(&ar->data_lock);
	ar->num_peers++;
	spin_unlock_bh(&ar->data_lock);
345 346 347 348

	return 0;
}

349 350 351 352 353 354 355 356 357 358
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) {
359
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
360
			    arvif->vdev_id, ret);
361 362 363 364 365 366 367
		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) {
368
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
369
			    arvif->vdev_id, ret);
370 371 372 373 374 375 376
		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) {
377
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
378
			    arvif->vdev_id, ret);
379 380 381 382 383 384 385
		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) {
386
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
387
			    arvif->vdev_id, ret);
388 389 390 391 392 393
		return ret;
	}

	return 0;
}

394 395
static int  ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
{
396 397 398
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

399 400 401 402
	if (value != 0xFFFFFFFF)
		value = min_t(u32, arvif->ar->hw->wiphy->rts_threshold,
			      ATH10K_RTS_MAX);

403 404
	vdev_param = ar->wmi.vdev_param->rts_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
405 406 407 408
}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
409 410 411
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

412 413 414 415 416
	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

417 418
	vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
419 420
}

421 422 423 424 425 426 427 428 429 430 431 432 433 434
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;

435 436 437 438
	spin_lock_bh(&ar->data_lock);
	ar->num_peers--;
	spin_unlock_bh(&ar->data_lock);

439 440 441 442 443 444 445 446 447 448 449 450 451 452
	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;

453
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
454 455 456 457
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
458
		ar->num_peers--;
459 460 461 462
	}
	spin_unlock_bh(&ar->data_lock);
}

463 464 465 466 467 468 469 470 471 472 473
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);
	}
474
	ar->num_peers = 0;
475 476 477
	spin_unlock_bh(&ar->data_lock);
}

478 479 480 481
/************************/
/* Interface management */
/************************/

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
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);

	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
	arvif->beacon_sent = false;
}

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;
	}
}

516 517 518 519
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	int ret;

M
Michal Kazior 已提交
520 521
	lockdep_assert_held(&ar->conf_mutex);

522 523 524 525 526 527 528 529
	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
530
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
531
{
532 533
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
534 535 536 537 538 539 540
	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;
541
	arg.channel.band_center_freq1 = chandef->center_freq1;
542 543 544

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
545
	arg.channel.mode = chan_to_phymode(chandef);
546 547
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
548

549
	arg.channel.min_power = 0;
M
Michal Kazior 已提交
550 551 552
	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;
553 554 555

	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
556
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
557
			    vdev_id, ret);
558 559 560 561 562
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
563
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i: %d\n",
564
			    vdev_id, ret);
565 566 567 568 569
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
570
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
571
			    vdev_id, ret);
572 573 574 575 576
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

577
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
M
Michal Kazior 已提交
578
		   ar->monitor_vdev_id);
579 580 581 582 583
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
584
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
585
			    ar->monitor_vdev_id, ret);
586 587 588 589

	return ret;
}

M
Michal Kazior 已提交
590
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
591 592 593 594 595
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

596 597
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
598
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
599
			    ar->monitor_vdev_id, ret);
600 601 602

	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
603
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
604
			    ar->monitor_vdev_id, ret);
605 606 607

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
608
		ath10k_warn(ar, "failed to synchronise monitor vdev %i: %d\n",
609
			    ar->monitor_vdev_id, ret);
610

611
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
M
Michal Kazior 已提交
612
		   ar->monitor_vdev_id);
613 614 615
	return ret;
}

M
Michal Kazior 已提交
616
static int ath10k_monitor_vdev_create(struct ath10k *ar)
617 618 619 620 621
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

B
Ben Greear 已提交
622
	if (ar->free_vdev_map == 0) {
623
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
624 625 626
		return -ENOMEM;
	}

B
Ben Greear 已提交
627
	bit = __ffs64(ar->free_vdev_map);
B
Ben Greear 已提交
628

B
Ben Greear 已提交
629
	ar->monitor_vdev_id = bit;
630 631 632 633 634

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
635
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
636
			    ar->monitor_vdev_id, ret);
B
Ben Greear 已提交
637
		return ret;
638 639
	}

B
Ben Greear 已提交
640
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
641
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
642 643 644 645 646
		   ar->monitor_vdev_id);

	return 0;
}

M
Michal Kazior 已提交
647
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
648 649 650 651 652 653 654
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
655
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
656
			    ar->monitor_vdev_id, ret);
657 658 659
		return ret;
	}

B
Ben Greear 已提交
660
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
661

662
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
663 664 665 666
		   ar->monitor_vdev_id);
	return ret;
}

M
Michal Kazior 已提交
667 668 669 670 671 672 673 674
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
675
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
676 677 678 679 680
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
681
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
682 683 684 685 686
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
687
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
M
Michal Kazior 已提交
688 689 690 691

	return 0;
}

692
static int ath10k_monitor_stop(struct ath10k *ar)
M
Michal Kazior 已提交
693 694 695 696 697 698
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
699
	if (ret) {
700
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
701 702
		return ret;
	}
M
Michal Kazior 已提交
703 704

	ret = ath10k_monitor_vdev_delete(ar);
705
	if (ret) {
706
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
707 708
		return ret;
	}
M
Michal Kazior 已提交
709 710

	ar->monitor_started = false;
711
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734

	return 0;
}

static int ath10k_monitor_recalc(struct ath10k *ar)
{
	bool should_start;

	lockdep_assert_held(&ar->conf_mutex);

	should_start = ar->monitor ||
		       ar->filter_flags & FIF_PROMISC_IN_BSS ||
		       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);
735 736

	return ath10k_monitor_stop(ar);
M
Michal Kazior 已提交
737 738
}

739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758
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;

	if (arvif->use_cts_prot || arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);

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

759 760 761 762 763 764 765 766
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

767
	ret = ath10k_monitor_recalc(ar);
768
	if (ret) {
769
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
770 771 772 773
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

774
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
775 776 777 778 779 780 781 782 783 784 785 786 787 788
		   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
789
	ath10k_monitor_stop(ar);
790

791
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
792 793 794 795

	return 0;
}

796
static void ath10k_recalc_radar_detection(struct ath10k *ar)
797 798 799 800 801 802 803
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

804
	if (!ar->radar_enabled)
805 806
		return;

807
	if (ar->num_started_vdevs > 0)
808 809 810 811 812 813 814 815 816
		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.
		 */
817
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
818 819 820 821
		ieee80211_radar_detected(ar->hw);
	}
}

822
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
M
Michal Kazior 已提交
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

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

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

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

859
	ath10k_dbg(ar, ATH10K_DBG_MAC,
M
Michal Kazior 已提交
860 861 862 863
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

864 865 866 867 868
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

M
Michal Kazior 已提交
869
	if (ret) {
870
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
M
Michal Kazior 已提交
871 872 873 874 875 876
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
877
		ath10k_warn(ar, "failed to synchronise setup for vdev %i: %d\n",
M
Michal Kazior 已提交
878 879 880 881
			    arg.vdev_id, ret);
		return ret;
	}

882 883 884
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

M
Michal Kazior 已提交
885 886 887
	return ret;
}

888 889 890 891 892 893 894 895 896 897
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);
}

M
Michal Kazior 已提交
898 899 900 901 902 903 904 905 906 907 908
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) {
909
		ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
M
Michal Kazior 已提交
910 911 912 913 914 915
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
916
		ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
M
Michal Kazior 已提交
917 918 919 920
			    arvif->vdev_id, ret);
		return ret;
	}

921 922 923 924 925 926 927
	WARN_ON(ar->num_started_vdevs == 0);

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

M
Michal Kazior 已提交
928 929 930
	return ret;
}

931
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
932
				     struct ieee80211_bss_conf *info)
933
{
934
	struct ath10k *ar = arvif->ar;
935 936
	int ret = 0;

M
Michal Kazior 已提交
937 938
	lockdep_assert_held(&arvif->ar->conf_mutex);

939 940
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
941 942 943 944

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

945
		spin_lock_bh(&arvif->ar->data_lock);
946
		ath10k_mac_vif_beacon_free(arvif);
947 948
		spin_unlock_bh(&arvif->ar->data_lock);

949 950 951 952 953 954 955 956 957
		return;
	}

	arvif->tx_seq_no = 0x1000;

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

958
	arvif->aid = 0;
K
Kalle Valo 已提交
959
	ether_addr_copy(arvif->bssid, info->bssid);
960 961 962

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
963
	if (ret) {
964
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
965
			    arvif->vdev_id, ret);
966
		ath10k_vdev_stop(arvif);
967 968
		return;
	}
969 970 971 972

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

973
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
974 975 976 977 978 979
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
980
	struct ath10k *ar = arvif->ar;
981
	u32 vdev_param;
982 983
	int ret = 0;

M
Michal Kazior 已提交
984 985
	lockdep_assert_held(&arvif->ar->conf_mutex);

986 987 988
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
989
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
990 991
				    self_peer, arvif->vdev_id, ret);

992
		if (is_zero_ether_addr(arvif->bssid))
993 994
			return;

995
		memset(arvif->bssid, 0, ETH_ALEN);
996 997 998 999 1000 1001

		return;
	}

	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
	if (ret) {
1002
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1003 1004 1005 1006
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1007 1008
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1009 1010
					ATH10K_DEFAULT_ATIM);
	if (ret)
1011
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1012 1013 1014 1015 1016 1017
			    arvif->vdev_id, ret);
}

/*
 * Review this when mac80211 gains per-interface powersave support.
 */
1018
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1019
{
1020 1021
	struct ath10k *ar = arvif->ar;
	struct ieee80211_conf *conf = &ar->hw->conf;
1022 1023 1024 1025
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;

M
Michal Kazior 已提交
1026 1027
	lockdep_assert_held(&arvif->ar->conf_mutex);

1028 1029
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1030 1031 1032 1033 1034

	if (conf->flags & IEEE80211_CONF_PS) {
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1035
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1036 1037
						  conf->dynamic_ps_timeout);
		if (ret) {
1038
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1039
				    arvif->vdev_id, ret);
1040
			return ret;
1041 1042 1043 1044 1045
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1046
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
K
Kalle Valo 已提交
1047 1048
		   arvif->vdev_id, psmode ? "enable" : "disable");

1049 1050
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1051
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1052
			    psmode, arvif->vdev_id, ret);
1053 1054 1055 1056
		return ret;
	}

	return 0;
1057 1058 1059 1060 1061 1062
}

/**********************/
/* Station management */
/**********************/

M
Michal Kazior 已提交
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
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;
}

1080
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
1081
				      struct ieee80211_vif *vif,
1082 1083 1084
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1085 1086
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

M
Michal Kazior 已提交
1087 1088
	lockdep_assert_held(&ar->conf_mutex);

K
Kalle Valo 已提交
1089
	ether_addr_copy(arg->addr, sta->addr);
1090 1091 1092
	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;
M
Michal Kazior 已提交
1093
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1094
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
1095
	arg->peer_caps = vif->bss_conf.assoc_capability;
1096 1097 1098
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
1099
				       struct ieee80211_vif *vif,
1100 1101 1102 1103 1104 1105 1106
				       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
1107 1108
	lockdep_assert_held(&ar->conf_mutex);

1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
			       info->bssid, NULL, 0, 0, 0);
	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,
1120 1121 1122
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1123 1124 1125 1126 1127 1128
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1129
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1130 1131 1132 1133
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
1134
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
		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;
	int i;

M
Michal Kazior 已提交
1149 1150
	lockdep_assert_held(&ar->conf_mutex);

1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
	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;

		rateset->rates[rateset->num_rates] = rates->hw_value;
		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;
1172
	u32 stbc;
1173

M
Michal Kazior 已提交
1174 1175
	lockdep_assert_held(&ar->conf_mutex);

1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224
	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;

1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
	/*
	 * 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;
	}
1242

1243
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
K
Kalle Valo 已提交
1244
		   arg->addr,
1245 1246 1247 1248
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1249 1250 1251
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1252 1253 1254
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1255
	int ret = 0;
1256

M
Michal Kazior 已提交
1257 1258
	lockdep_assert_held(&ar->conf_mutex);

1259
	if (sta->wme && sta->uapsd_queues) {
1260
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
			   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;

1279 1280 1281 1282 1283
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1284
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1285
				    arvif->vdev_id, ret);
1286 1287
			return ret;
		}
1288

1289 1290 1291 1292 1293
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1294
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1295
				    arvif->vdev_id, ret);
1296 1297
			return ret;
		}
1298 1299 1300 1301 1302

		/* 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 */
1303
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1304 1305
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1306
		if (ret) {
1307
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1308
				    arvif->vdev_id, ret);
1309 1310
			return ret;
		}
1311 1312
	}

1313
	return 0;
1314 1315 1316 1317 1318 1319 1320
}

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;
1321
	u8 ampdu_factor;
1322 1323 1324 1325 1326 1327 1328

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
	arg->peer_vht_caps = vht_cap->cap;

1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
	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);

1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
	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);

1353
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
K
Kalle Valo 已提交
1354
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
1355 1356 1357
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
M
Michal Kazior 已提交
1358
				    struct ieee80211_vif *vif,
1359 1360 1361
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1362 1363
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

1364 1365
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
1366 1367 1368 1369 1370 1371 1372
		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;
		}
1373 1374
		break;
	case WMI_VDEV_TYPE_STA:
M
Michal Kazior 已提交
1375
		if (vif->bss_conf.qos)
1376
			arg->peer_flags |= WMI_PEER_QOS;
1377 1378 1379 1380 1381 1382 1383
		break;
	default:
		break;
	}
}

static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
1384
					struct ieee80211_vif *vif,
1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402
					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:
		if (sta->ht_cap.ht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
		} else {
			phymode = MODE_11G;
		}

		break;
	case IEEE80211_BAND_5GHZ:
1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413
		/*
		 * 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) {
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

1427
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
1428
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
1429

1430 1431 1432 1433
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

1434
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
1435
				     struct ieee80211_vif *vif,
1436 1437
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
1438
{
M
Michal Kazior 已提交
1439 1440
	lockdep_assert_held(&ar->conf_mutex);

1441
	memset(arg, 0, sizeof(*arg));
1442

M
Michal Kazior 已提交
1443 1444
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
1445 1446 1447
	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
1448 1449
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
1450

1451
	return 0;
1452 1453
}

M
Michal Kazior 已提交
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
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]);
}

1481 1482 1483 1484 1485 1486 1487
/* 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
1488
	struct ieee80211_sta_ht_cap ht_cap;
1489
	struct wmi_peer_assoc_complete_arg peer_arg;
1490 1491 1492
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
1493 1494
	lockdep_assert_held(&ar->conf_mutex);

1495 1496 1497 1498
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
1499
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
1500
			    bss_conf->bssid, arvif->vdev_id);
1501 1502 1503 1504
		rcu_read_unlock();
		return;
	}

M
Michal Kazior 已提交
1505 1506 1507 1508
	/* 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
1509
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
1510
	if (ret) {
1511
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
1512
			    bss_conf->bssid, arvif->vdev_id, ret);
1513 1514 1515 1516 1517 1518
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

1519 1520
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
1521
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
1522
			    bss_conf->bssid, arvif->vdev_id, ret);
1523 1524 1525
		return;
	}

M
Michal Kazior 已提交
1526 1527
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
1528
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
1529
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
1530 1531 1532
		return;
	}

1533
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
1534 1535 1536
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

1537
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
1538
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
1539 1540 1541

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
1542
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
1543
			    arvif->vdev_id, ret);
1544 1545 1546 1547
		return;
	}

	arvif->is_up = true;
1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
}

/*
 * FIXME: flush TIDs
 */
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);
	int ret;

M
Michal Kazior 已提交
1560 1561
	lockdep_assert_held(&ar->conf_mutex);

1562 1563 1564 1565 1566 1567
	/*
	 * For some reason, calling VDEV-DOWN before VDEV-STOP
	 * makes the FW to send frames via HTT after disassociation.
	 * No idea why this happens, even though VDEV-DOWN is supposed
	 * to be analogous to link down, so just stop the VDEV.
	 */
1568
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d stop (disassociated\n",
K
Kalle Valo 已提交
1569 1570 1571
		   arvif->vdev_id);

	/* FIXME: check return value */
1572 1573 1574 1575 1576 1577 1578 1579 1580
	ret = ath10k_vdev_stop(arvif);

	/*
	 * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and
	 * report beacons from previously associated network through HTT.
	 * This in turn would spam mac80211 WARN_ON if we bring down all
	 * interfaces as it expects there is no rx when no interface is
	 * running.
	 */
1581
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d down\n", arvif->vdev_id);
K
Kalle Valo 已提交
1582 1583

	/* FIXME: why don't we print error if wmi call fails? */
1584 1585
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);

1586
	arvif->def_wep_key_idx = 0;
1587 1588 1589

	arvif->is_started = false;
	arvif->is_up = false;
1590 1591
}

M
Michal Kazior 已提交
1592 1593 1594 1595
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
1596
{
M
Michal Kazior 已提交
1597
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1598
	struct wmi_peer_assoc_complete_arg peer_arg;
1599 1600
	int ret = 0;

M
Michal Kazior 已提交
1601 1602
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
1603
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
1604
	if (ret) {
1605
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
1606
			    sta->addr, arvif->vdev_id, ret);
1607 1608 1609
		return ret;
	}

1610
	peer_arg.peer_reassoc = reassoc;
1611
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1612
	if (ret) {
1613
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
1614
			    sta->addr, arvif->vdev_id, ret);
1615 1616 1617
		return ret;
	}

M
Michal Kazior 已提交
1618 1619
	ret = ath10k_setup_peer_smps(ar, arvif, sta->addr, &sta->ht_cap);
	if (ret) {
1620
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
1621
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
1622 1623 1624
		return ret;
	}

1625
	if (!sta->wme && !reassoc) {
1626 1627 1628
		arvif->num_legacy_stations++;
		ret  = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
1629
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
1630 1631 1632 1633 1634
				    arvif->vdev_id, ret);
			return ret;
		}
	}

1635 1636
	ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
	if (ret) {
1637
		ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
1638
			    arvif->vdev_id, ret);
1639 1640 1641
		return ret;
	}

1642 1643
	ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
	if (ret) {
1644
		ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
1645
			    sta->addr, arvif->vdev_id, ret);
1646 1647 1648
		return ret;
	}

1649 1650 1651
	return ret;
}

M
Michal Kazior 已提交
1652 1653
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
1654 1655
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
1656
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1657 1658
	int ret = 0;

M
Michal Kazior 已提交
1659 1660
	lockdep_assert_held(&ar->conf_mutex);

1661 1662 1663 1664
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
1665
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
1666 1667 1668 1669 1670
				    arvif->vdev_id, ret);
			return ret;
		}
	}

1671 1672
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
1673
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
1674
			    arvif->vdev_id, ret);
1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697
		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
1698 1699
	lockdep_assert_held(&ar->conf_mutex);

1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735
	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 =
1736
				!(channel->flags & IEEE80211_CHAN_NO_IR);
1737 1738 1739 1740

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

1741 1742 1743
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

1744
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
1745 1746 1747
			ch->passive = passive;

			ch->freq = channel->center_freq;
1748
			ch->band_center_freq1 = channel->center_freq;
1749
			ch->min_power = 0;
M
Michal Kazior 已提交
1750 1751 1752
			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;
1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765
			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;

1766
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
1767 1768
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781
				   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;
}

1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797
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;
}

1798
static void ath10k_regd_update(struct ath10k *ar)
1799 1800 1801
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
1802 1803
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
1804

1805
	lockdep_assert_held(&ar->conf_mutex);
1806 1807 1808

	ret = ath10k_update_channel_list(ar);
	if (ret)
1809
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
1810 1811

	regpair = ar->ath_common.regulatory.regpair;
1812

1813 1814 1815 1816 1817 1818 1819
	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;
	}

1820 1821 1822
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
1823 1824 1825
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
1826
					    regpair->reg_2ghz_ctl,
1827 1828
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
1829
	if (ret)
1830
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
1831
}
M
Michal Kazior 已提交
1832

1833 1834 1835 1836 1837
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
1838
	bool result;
1839 1840 1841

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

J
Janusz Dziedzic 已提交
1842
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
1843
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
1844 1845 1846 1847
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
1848
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
1849 1850 1851
				    request->dfs_region);
	}

1852 1853 1854
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
1855
	mutex_unlock(&ar->conf_mutex);
1856 1857 1858 1859 1860 1861
}

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

1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875
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;
}

1876
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
1877
{
1878 1879
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
1880

M
Michal Kazior 已提交
1881
	if (ar->monitor_started)
1882 1883
		return ar->monitor_vdev_id;

1884
	ath10k_warn(ar, "failed to resolve vdev id\n");
1885 1886 1887
	return 0;
}

M
Michal Kazior 已提交
1888 1889
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
1890
 */
M
Michal Kazior 已提交
1891
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
1892 1893
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
1894
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
1895 1896 1897 1898 1899 1900
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
1901 1902 1903
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913

	/* Fw/Hw generates a corrupted QoS Control Field for QoS NullFunc
	 * frames. Powersave is handled by the fw/hw so QoS NyllFunc frames are
	 * used only for CQM purposes (e.g. hostapd station keepalive ping) so
	 * it is safe to downgrade to NullFunc.
	 */
	if (ieee80211_is_qos_nullfunc(hdr->frame_control)) {
		hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
	}
1914 1915
}

1916 1917 1918 1919
static void ath10k_tx_wep_key_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						wep_key_work);
1920
	struct ath10k *ar = arvif->ar;
1921 1922
	int ret, keyidx = arvif->def_wep_key_newidx;

M
Michal Kazior 已提交
1923 1924 1925 1926 1927
	mutex_lock(&arvif->ar->conf_mutex);

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

1928
	if (arvif->def_wep_key_idx == keyidx)
M
Michal Kazior 已提交
1929
		goto unlock;
1930

1931
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
1932 1933 1934 1935 1936 1937 1938
		   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) {
1939
		ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
1940 1941
			    arvif->vdev_id,
			    ret);
M
Michal Kazior 已提交
1942
		goto unlock;
1943 1944 1945
	}

	arvif->def_wep_key_idx = keyidx;
M
Michal Kazior 已提交
1946 1947 1948

unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
1949 1950
}

M
Michal Kazior 已提交
1951 1952 1953
static void ath10k_tx_h_update_wep_key(struct ieee80211_vif *vif,
				       struct ieee80211_key_conf *key,
				       struct sk_buff *skb)
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;

	if (!ieee80211_has_protected(hdr->frame_control))
		return;

	if (!key)
		return;

	if (key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
	    key->cipher != WLAN_CIPHER_SUITE_WEP104)
		return;

1969
	if (key->keyidx == arvif->def_wep_key_idx)
1970 1971
		return;

1972 1973 1974 1975 1976
	/* FIXME: Most likely a few frames will be TXed with an old key. Simply
	 * queueing frames until key index is updated is not an option because
	 * sk_buff may need more processing to be done, e.g. offchannel */
	arvif->def_wep_key_newidx = key->keyidx;
	ieee80211_queue_work(ar->hw, &arvif->wep_key_work);
1977 1978
}

M
Michal Kazior 已提交
1979 1980 1981
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
{
	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);
	}
}

static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2006
	int ret = 0;
2007

M
Michal Kazior 已提交
2008 2009 2010 2011 2012 2013
	if (ar->htt.target_version_major >= 3) {
		/* Since HTT 3.0 there is no separate mgmt tx command */
		ret = ath10k_htt_tx(&ar->htt, skb);
		goto exit;
	}

2014 2015 2016 2017 2018
	if (ieee80211_is_mgmt(hdr->frame_control)) {
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features)) {
			if (skb_queue_len(&ar->wmi_mgmt_tx_queue) >=
			    ATH10K_MAX_NUM_MGMT_PENDING) {
2019
				ath10k_warn(ar, "reached WMI management transmit queue limit\n");
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
				ret = -EBUSY;
				goto exit;
			}

			skb_queue_tail(&ar->wmi_mgmt_tx_queue, skb);
			ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
		} else {
			ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
		}
	} else if (!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features) &&
		   ieee80211_is_nullfunc(hdr->frame_control)) {
2032 2033
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
2034 2035
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
2036
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2037
	} else {
2038
		ret = ath10k_htt_tx(&ar->htt, skb);
2039
	}
2040

M
Michal Kazior 已提交
2041
exit:
2042
	if (ret) {
2043 2044
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085
		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);

2086
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2087 2088 2089 2090
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2091
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2092 2093 2094 2095 2096 2097

		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
2098
			/* FIXME: should this use ath10k_warn()? */
2099
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2100 2101 2102 2103 2104
				   peer_addr, vdev_id);

		if (!peer) {
			ret = ath10k_peer_create(ar, vdev_id, peer_addr);
			if (ret)
2105
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2106 2107 2108 2109
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2110
		reinit_completion(&ar->offchan_tx_completed);
2111 2112 2113 2114 2115 2116 2117 2118
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

		ath10k_tx_htt(ar, skb);

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
		if (ret <= 0)
2119
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2120 2121 2122 2123 2124
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2125
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2126 2127 2128 2129 2130 2131 2132
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157
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);
2158
		if (ret) {
2159
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2160
				    ret);
2161 2162
			ieee80211_free_txskb(ar->hw, skb);
		}
2163 2164 2165
	}
}

2166 2167 2168 2169
/************/
/* Scanning */
/************/

2170
void __ath10k_scan_finish(struct ath10k *ar)
2171
{
2172
	lockdep_assert_held(&ar->data_lock);
2173

2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
		if (ar->scan.is_roc)
			ieee80211_remain_on_channel_expired(ar->hw);
		else
			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;
2193
	}
2194
}
2195

2196 2197 2198 2199
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2200 2201 2202
	spin_unlock_bh(&ar->data_lock);
}

2203
static int ath10k_scan_stop(struct ath10k *ar)
2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215
{
	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) {
2216
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2217
		goto out;
2218 2219 2220
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2221
	if (ret == 0) {
2222
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2223 2224 2225 2226
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
2227

2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248
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);
2249 2250

	spin_lock_bh(&ar->data_lock);
2251 2252 2253 2254 2255 2256 2257 2258 2259

	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:
2260
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
2261 2262 2263 2264 2265 2266 2267 2268 2269
			    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)
2270
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
2271 2272 2273

		spin_lock_bh(&ar->data_lock);
		break;
2274
	}
2275

2276
	spin_unlock_bh(&ar->data_lock);
2277
}
2278

2279 2280 2281 2282 2283 2284 2285 2286
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);
2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301
}

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) {
2302 2303
		ret = ath10k_scan_stop(ar);
		if (ret)
2304
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
2305 2306

		return -ETIMEDOUT;
2307 2308
	}

2309 2310 2311
	/* 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));
2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322
	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
2323
	struct ath10k *ar = hw->priv;
2324
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
2325 2326
	struct ieee80211_vif *vif = info->control.vif;
	struct ieee80211_key_conf *key = info->control.hw_key;
2327 2328 2329 2330
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
2331
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
2332

M
Michal Kazior 已提交
2333 2334
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
2335
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
2336

2337
	/* it makes no sense to process injected frames like that */
M
Michal Kazior 已提交
2338 2339 2340 2341 2342
	if (vif && vif->type != NL80211_IFTYPE_MONITOR) {
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_update_wep_key(vif, key, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
2343
	}
2344 2345 2346 2347

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
		ATH10K_SKB_CB(skb)->htt.is_offchan = true;
2348
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2349 2350
		spin_unlock_bh(&ar->data_lock);

2351 2352
		ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
			   skb);
2353 2354 2355 2356 2357 2358 2359 2360 2361

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

	ath10k_tx_htt(ar, skb);
}

2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374
/* Must not be called with conf_mutex held as workers can use that also. */
static void ath10k_drain_tx(struct ath10k *ar)
{
	/* 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);
}

2375
void ath10k_halt(struct ath10k *ar)
2376
{
2377 2378
	struct ath10k_vif *arvif;

2379 2380
	lockdep_assert_held(&ar->conf_mutex);

2381 2382 2383 2384 2385
	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
2386
		ath10k_monitor_stop(ar);
2387 2388

	ar->monitor_started = false;
M
Michal Kazior 已提交
2389

2390
	ath10k_scan_finish(ar);
2391 2392 2393 2394 2395
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
2396 2397
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
2398 2399 2400
	spin_unlock_bh(&ar->data_lock);
}

2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435
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;
}

static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	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) {
2436
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
2437 2438 2439 2440 2441 2442 2443
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
2444
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462
			    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;
}

2463 2464 2465
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
2466
	int ret = 0;
2467

2468 2469 2470 2471 2472 2473 2474
	/*
	 * 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
2475 2476
	mutex_lock(&ar->conf_mutex);

2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488
	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);
2489
		ret = -EINVAL;
2490
		goto err;
K
Kalle Valo 已提交
2491 2492 2493
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
2494 2495 2496 2497
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
2498
		ath10k_err(ar, "Could not init hif: %d\n", ret);
2499
		goto err_off;
2500 2501
	}

K
Kalle Valo 已提交
2502
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
2503
	if (ret) {
2504
		ath10k_err(ar, "Could not init core: %d\n", ret);
2505
		goto err_power_down;
2506 2507
	}

2508
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2509
	if (ret) {
2510
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
2511 2512
		goto err_core_stop;
	}
2513

2514
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2515
	if (ret) {
2516
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
2517 2518
		goto err_core_stop;
	}
2519

2520 2521 2522 2523
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535
	/*
	 * 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) {
2536
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
2537
			    ret);
2538
		goto err_core_stop;
2539 2540
	}

2541
	ar->num_started_vdevs = 0;
2542 2543
	ath10k_regd_update(ar);

2544 2545
	ath10k_spectral_start(ar);

2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558
	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
2559
	mutex_unlock(&ar->conf_mutex);
2560
	return ret;
2561 2562 2563 2564 2565 2566
}

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

2567 2568
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
2569
	mutex_lock(&ar->conf_mutex);
2570
	if (ar->state != ATH10K_STATE_OFF) {
2571
		ath10k_halt(ar);
2572 2573
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
2574 2575
	mutex_unlock(&ar->conf_mutex);

2576
	cancel_delayed_work_sync(&ar->scan.timeout);
2577
	cancel_work_sync(&ar->restart_work);
2578 2579
}

2580
static int ath10k_config_ps(struct ath10k *ar)
2581
{
2582 2583
	struct ath10k_vif *arvif;
	int ret = 0;
2584 2585 2586

	lockdep_assert_held(&ar->conf_mutex);

2587 2588 2589
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
2590
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
2591 2592 2593
			break;
		}
	}
2594

2595
	return ret;
2596 2597
}

2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627
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);

2628
	ath10k_dbg(ar, ATH10K_DBG_MAC,
2629 2630 2631 2632 2633 2634 2635 2636
		   "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
2637
	if (ar->monitor_started)
2638
		ath10k_monitor_stop(ar);
2639 2640 2641 2642 2643

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

2644 2645 2646
		if (!arvif->is_up)
			continue;

2647 2648 2649
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

2650
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2651
		if (ret) {
2652
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
2653 2654 2655 2656 2657
				    arvif->vdev_id, ret);
			continue;
		}
	}

2658
	/* all vdevs are downed now - attempt to restart and re-up them */
2659 2660 2661 2662 2663 2664 2665 2666

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

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

2667
		ret = ath10k_vdev_restart(arvif);
2668
		if (ret) {
2669
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
2670 2671 2672 2673 2674 2675 2676 2677 2678 2679
				    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) {
2680
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
2681 2682 2683 2684 2685
				    arvif->vdev_id, ret);
			continue;
		}
	}

2686
	ath10k_monitor_recalc(ar);
2687 2688
}

2689 2690
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
2691 2692 2693
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;
M
Michal Kazior 已提交
2694
	u32 param;
2695 2696 2697 2698

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2699
		ath10k_dbg(ar, ATH10K_DBG_MAC,
2700
			   "mac config channel %dMHz flags 0x%x radar %d\n",
2701
			   conf->chandef.chan->center_freq,
2702 2703
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
2704

2705 2706 2707
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
2708

2709 2710
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
2711 2712 2713 2714 2715

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
2716 2717
	}

M
Michal Kazior 已提交
2718
	if (changed & IEEE80211_CONF_CHANGE_POWER) {
2719
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac config power %d\n",
M
Michal Kazior 已提交
2720 2721 2722 2723 2724 2725
			   hw->conf.power_level);

		param = ar->wmi.pdev_param->txpower_limit2g;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						hw->conf.power_level * 2);
		if (ret)
2726
			ath10k_warn(ar, "failed to set 2g txpower %d: %d\n",
M
Michal Kazior 已提交
2727 2728 2729 2730 2731 2732
				    hw->conf.power_level, ret);

		param = ar->wmi.pdev_param->txpower_limit5g;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						hw->conf.power_level * 2);
		if (ret)
2733
			ath10k_warn(ar, "failed to set 5g txpower %d: %d\n",
M
Michal Kazior 已提交
2734
				    hw->conf.power_level, ret);
2735 2736
	}

2737 2738
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
2739 2740

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
2741 2742 2743 2744
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764
	}

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

/*
 * 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;
2765
	u32 value;
2766
	int bit;
2767
	u32 vdev_param;
2768 2769 2770

	mutex_lock(&ar->conf_mutex);

2771 2772
	memset(arvif, 0, sizeof(*arvif));

2773 2774 2775
	arvif->ar = ar;
	arvif->vif = vif;

2776
	INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);
2777
	INIT_LIST_HEAD(&arvif->list);
2778

B
Ben Greear 已提交
2779
	if (ar->free_vdev_map == 0) {
2780
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
2781
		ret = -EBUSY;
2782
		goto err;
2783
	}
B
Ben Greear 已提交
2784
	bit = __ffs64(ar->free_vdev_map);
2785

B
Ben Greear 已提交
2786 2787 2788 2789
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);

	arvif->vdev_id = bit;
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	if (ar->p2p)
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;

	switch (vif->type) {
	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;
	}

2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839
	/* 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,
2840
							GFP_ATOMIC);
2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851
		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");
2852 2853 2854 2855

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
2856
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
2857
			    arvif->vdev_id, ret);
2858
		goto err;
2859 2860
	}

B
Ben Greear 已提交
2861
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
2862
	list_add(&arvif->list, &ar->arvifs);
2863

2864 2865
	vdev_param = ar->wmi.vdev_param->def_keyid;
	ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
2866
					arvif->def_wep_key_idx);
2867
	if (ret) {
2868
		ath10k_warn(ar, "failed to set vdev %i default key id: %d\n",
2869
			    arvif->vdev_id, ret);
2870 2871
		goto err_vdev_delete;
	}
2872

2873 2874
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2875
					ATH10K_HW_TXRX_NATIVE_WIFI);
2876
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
2877
	if (ret && ret != -EOPNOTSUPP) {
2878
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
2879
			    arvif->vdev_id, ret);
2880 2881
		goto err_vdev_delete;
	}
2882 2883 2884 2885

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
2886
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
2887
				    arvif->vdev_id, ret);
2888
			goto err_vdev_delete;
2889
		}
2890

2891 2892
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
2893
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
2894
				    arvif->vdev_id, ret);
2895 2896
			goto err_peer_delete;
		}
2897 2898 2899 2900 2901 2902 2903
	}

	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);
2904
		if (ret) {
2905
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
2906
				    arvif->vdev_id, ret);
2907 2908
			goto err_peer_delete;
		}
2909 2910 2911 2912 2913

		param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
2914
		if (ret) {
2915
			ath10k_warn(ar, "failed to set vdev %i TX wake thresh: %d\n",
2916
				    arvif->vdev_id, ret);
2917 2918
			goto err_peer_delete;
		}
2919 2920 2921 2922 2923

		param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
		value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
2924
		if (ret) {
2925
			ath10k_warn(ar, "failed to set vdev %i PSPOLL count: %d\n",
2926
				    arvif->vdev_id, ret);
2927 2928
			goto err_peer_delete;
		}
2929 2930
	}

2931
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
2932
	if (ret) {
2933
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
2934
			    arvif->vdev_id, ret);
2935 2936
		goto err_peer_delete;
	}
2937

2938
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
2939
	if (ret) {
2940
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
2941
			    arvif->vdev_id, ret);
2942 2943
		goto err_peer_delete;
	}
2944

2945
	mutex_unlock(&ar->conf_mutex);
2946 2947 2948 2949 2950 2951 2952 2953
	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
2954
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
2955
	list_del(&arvif->list);
2956 2957

err:
2958 2959 2960 2961 2962 2963
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

2964 2965
	mutex_unlock(&ar->conf_mutex);

2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977
	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;

	mutex_lock(&ar->conf_mutex);

2978 2979
	cancel_work_sync(&arvif->wep_key_work);

2980
	spin_lock_bh(&ar->data_lock);
2981
	ath10k_mac_vif_beacon_cleanup(arvif);
2982 2983
	spin_unlock_bh(&ar->data_lock);

2984 2985
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
2986
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
2987 2988
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
2989
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
2990
	list_del(&arvif->list);
2991 2992 2993 2994

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
		if (ret)
2995
			ath10k_warn(ar, "failed to remove peer for AP vdev %i: %d\n",
2996
				    arvif->vdev_id, ret);
2997 2998 2999 3000

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

3001
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3002 3003
		   arvif->vdev_id);

3004 3005
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3006
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3007
			    arvif->vdev_id, ret);
3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040

	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;

3041 3042 3043
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055

	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;
3056
	u32 vdev_param, pdev_param, slottime, preamble;
3057 3058 3059 3060 3061 3062 3063 3064

	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;
3065 3066
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3067
						arvif->beacon_interval);
3068
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3069 3070 3071
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

3072
		if (ret)
3073
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
3074
				    arvif->vdev_id, ret);
3075 3076 3077
	}

	if (changed & BSS_CHANGED_BEACON) {
3078
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3079 3080 3081
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

3082 3083
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
3084 3085
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
3086
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
3087
				    arvif->vdev_id, ret);
3088 3089
	}

3090
	if (changed & BSS_CHANGED_BEACON_INFO) {
3091 3092
		arvif->dtim_period = info->dtim_period;

3093
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3094 3095 3096
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

3097 3098
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3099 3100
						arvif->dtim_period);
		if (ret)
3101
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
3102
				    arvif->vdev_id, ret);
3103 3104 3105 3106 3107 3108 3109 3110 3111 3112
	}

	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;
	}

3113 3114 3115 3116 3117 3118
	/*
	 * Firmware manages AP self-peer internally so make sure to not create
	 * it in driver. Otherwise AP self-peer deletion may timeout later.
	 */
	if (changed & BSS_CHANGED_BSSID &&
	    vif->type != NL80211_IFTYPE_AP) {
3119 3120
		if (!is_zero_ether_addr(info->bssid)) {
			if (vif->type == NL80211_IFTYPE_STATION) {
3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
				ath10k_dbg(ar, ATH10K_DBG_MAC,
					   "mac vdev %d create peer %pM\n",
					   arvif->vdev_id, info->bssid);

				ret = ath10k_peer_create(ar, arvif->vdev_id,
							 info->bssid);
				if (ret)
					ath10k_warn(ar, "failed to add peer %pM for vdev %d when changing bssid: %i\n",
						    info->bssid, arvif->vdev_id,
						    ret);
3131 3132 3133 3134
				/*
				 * this is never erased as we it for crypto key
				 * clearing; this is FW requirement
				 */
K
Kalle Valo 已提交
3135
				ether_addr_copy(arvif->bssid, info->bssid);
3136

3137
				ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3138 3139 3140
					   "mac vdev %d start %pM\n",
					   arvif->vdev_id, info->bssid);

3141
				ret = ath10k_vdev_start(arvif);
3142
				if (ret) {
3143
					ath10k_warn(ar, "failed to start vdev %i: %d\n",
3144
						    arvif->vdev_id, ret);
3145
					goto exit;
3146 3147 3148
				}

				arvif->is_started = true;
3149 3150 3151 3152 3153 3154 3155 3156
			}

			/*
			 * Mac80211 does not keep IBSS bssid when leaving IBSS,
			 * so driver need to store it. It is needed when leaving
			 * IBSS in order to remove BSSID peer.
			 */
			if (vif->type == NL80211_IFTYPE_ADHOC)
3157
				memcpy(arvif->bssid, info->bssid,
3158 3159 3160 3161 3162 3163 3164 3165
				       ETH_ALEN);
		}
	}

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3166
		arvif->use_cts_prot = info->use_cts_prot;
3167
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
3168
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
3169

3170
		ret = ath10k_recalc_rtscts_prot(arvif);
3171
		if (ret)
3172
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
3173
				    arvif->vdev_id, ret);
3174 3175 3176 3177 3178 3179 3180 3181 3182
	}

	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 */

3183
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
3184 3185
			   arvif->vdev_id, slottime);

3186 3187
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3188 3189
						slottime);
		if (ret)
3190
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
3191
				    arvif->vdev_id, ret);
3192 3193 3194 3195 3196 3197 3198 3199
	}

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

3200
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3201 3202 3203
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

3204 3205
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3206 3207
						preamble);
		if (ret)
3208
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
3209
				    arvif->vdev_id, ret);
3210 3211 3212
	}

	if (changed & BSS_CHANGED_ASSOC) {
3213 3214 3215 3216 3217 3218 3219
		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);
3220
			ath10k_bss_assoc(hw, vif, info);
3221 3222
			ath10k_monitor_recalc(ar);
		}
3223 3224
	}

3225
exit:
3226 3227 3228 3229 3230
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
3231
			  struct ieee80211_scan_request *hw_req)
3232 3233 3234
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3235
	struct cfg80211_scan_request *req = &hw_req->req;
3236 3237 3238 3239 3240 3241 3242
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
	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:
3255
		ret = -EBUSY;
3256
		break;
3257 3258 3259
	}
	spin_unlock_bh(&ar->data_lock);

3260 3261 3262
	if (ret)
		goto exit;

3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281
	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;
		}
3282 3283
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3284 3285 3286 3287 3288 3289 3290 3291 3292 3293
	}

	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) {
3294
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
3295
		spin_lock_bh(&ar->data_lock);
3296
		ar->scan.state = ATH10K_SCAN_IDLE;
3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310
		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);
3311 3312
	cancel_delayed_work_sync(&ar->scan.timeout);
	ath10k_scan_abort(ar);
3313 3314 3315
	mutex_unlock(&ar->conf_mutex);
}

3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349
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)
3350
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
3351
			    arvif->vdev_id, ret);
3352 3353
}

3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387
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;

	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) {
3388
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

	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);
	}

	ret = ath10k_install_key(arvif, key, cmd, peer_addr);
	if (ret) {
3411
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
3412
			    arvif->vdev_id, peer_addr, ret);
3413 3414 3415
		goto exit;
	}

3416 3417
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

3418 3419 3420 3421 3422 3423 3424 3425
	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 */
3426
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
3427 3428 3429 3430 3431 3432 3433
	spin_unlock_bh(&ar->data_lock);

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

3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461
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) {
3462
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
3463 3464 3465 3466 3467
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
3468
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
3469 3470 3471 3472
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
3473
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
3474 3475 3476 3477 3478
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
3479
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
3480 3481 3482 3483
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
3484
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
3485 3486 3487 3488 3489
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
3490
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
3491 3492 3493
				    sta->addr, smps, err);
	}

3494
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
3495
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates\n",
3496 3497
			   sta->addr);

M
Michal Kazior 已提交
3498
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
3499
		if (err)
3500
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
3501 3502 3503
				    sta->addr);
	}

3504 3505 3506
	mutex_unlock(&ar->conf_mutex);
}

3507 3508 3509 3510 3511 3512 3513 3514
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);
3515
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3516
	int max_num_peers;
3517 3518
	int ret = 0;

3519 3520 3521 3522 3523 3524 3525
	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);
	}

3526 3527 3528 3529 3530
	/* 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);

3531 3532 3533 3534 3535 3536 3537 3538
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE &&
	    vif->type != NL80211_IFTYPE_STATION) {
		/*
		 * New station addition.
		 */
3539 3540 3541 3542 3543 3544
		if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features))
			max_num_peers = TARGET_10X_NUM_PEERS_MAX - 1;
		else
			max_num_peers = TARGET_NUM_PEERS;

		if (ar->num_peers >= max_num_peers) {
3545
			ath10k_warn(ar, "number of peers exceeded: peers number %d (max peers %d)\n",
3546 3547 3548 3549 3550
				    ar->num_peers, max_num_peers);
			ret = -ENOBUFS;
			goto exit;
		}

3551
		ath10k_dbg(ar, ATH10K_DBG_MAC,
3552 3553
			   "mac vdev %d peer create %pM (new sta) num_peers %d\n",
			   arvif->vdev_id, sta->addr, ar->num_peers);
K
Kalle Valo 已提交
3554

3555 3556
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
		if (ret)
3557
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
3558
				    sta->addr, arvif->vdev_id, ret);
3559 3560 3561 3562 3563
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
3564
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3565 3566
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
3567 3568
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
3569
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
3570
				    sta->addr, arvif->vdev_id, ret);
3571 3572 3573 3574 3575 3576 3577 3578 3579 3580

		if (vif->type == NL80211_IFTYPE_STATION)
			ath10k_bss_disassoc(hw, vif);
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
3581
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
3582 3583
			   sta->addr);

M
Michal Kazior 已提交
3584
		ret = ath10k_station_assoc(ar, vif, sta, false);
3585
		if (ret)
3586
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
3587
				    sta->addr, arvif->vdev_id, ret);
3588 3589 3590 3591 3592 3593 3594
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * Disassociation.
		 */
3595
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
3596 3597
			   sta->addr);

M
Michal Kazior 已提交
3598
		ret = ath10k_station_disassoc(ar, vif, sta);
3599
		if (ret)
3600
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
3601
				    sta->addr, arvif->vdev_id, ret);
3602
	}
3603
exit:
3604 3605 3606 3607 3608
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
3609
				u16 ac, bool enable)
3610 3611 3612 3613 3614
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
3615 3616
	lockdep_assert_held(&ar->conf_mutex);

3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647
	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;
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
		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) {
3648
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660
		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)
3661
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710

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;
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
		p = &ar->wmm_params.ac_vo;
		break;
	case IEEE80211_AC_VI:
		p = &ar->wmm_params.ac_vi;
		break;
	case IEEE80211_AC_BE:
		p = &ar->wmm_params.ac_be;
		break;
	case IEEE80211_AC_BK:
		p = &ar->wmm_params.ac_bk;
		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;

	/* FIXME: FW accepts wmm params per hw, not per vif */
	ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
	if (ret) {
3711
		ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
3712 3713 3714 3715 3716
		goto exit;
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
3717
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734

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;
3735
	int ret = 0;
3736 3737 3738 3739

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753
	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:
3754
		ret = -EBUSY;
3755
		break;
3756 3757 3758
	}
	spin_unlock_bh(&ar->data_lock);

3759 3760 3761
	if (ret)
		goto exit;

3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775
	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) {
3776
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
3777
		spin_lock_bh(&ar->data_lock);
3778
		ar->scan.state = ATH10K_SCAN_IDLE;
3779 3780 3781 3782 3783 3784
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
3785
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
3786 3787 3788

		ret = ath10k_scan_stop(ar);
		if (ret)
3789
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3790

3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805
		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);
3806 3807
	cancel_delayed_work_sync(&ar->scan.timeout);
	ath10k_scan_abort(ar);
3808 3809 3810 3811 3812 3813 3814 3815 3816 3817
	mutex_unlock(&ar->conf_mutex);

	return 0;
}

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

3818 3819 3820 3821 3822
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
3823

3824
	mutex_lock(&ar->conf_mutex);
3825
	list_for_each_entry(arvif, &ar->arvifs, list) {
3826
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
3827 3828 3829 3830
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
3831
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3832 3833 3834 3835
				    arvif->vdev_id, ret);
			break;
		}
	}
3836 3837
	mutex_unlock(&ar->conf_mutex);

3838
	return ret;
3839 3840
}

3841
static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3842
{
3843 3844 3845
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
M
Michal Kazior 已提交
3846

3847
	mutex_lock(&ar->conf_mutex);
3848
	list_for_each_entry(arvif, &ar->arvifs, list) {
3849
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d fragmentation threshold %d\n",
3850 3851 3852 3853
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
3854
			ath10k_warn(ar, "failed to set fragmentation threshold for vdev %d: %d\n",
3855 3856 3857 3858
				    arvif->vdev_id, ret);
			break;
		}
	}
3859 3860
	mutex_unlock(&ar->conf_mutex);

3861
	return ret;
3862 3863
}

3864 3865
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
3866 3867
{
	struct ath10k *ar = hw->priv;
3868
	bool skip;
3869 3870 3871 3872 3873 3874 3875
	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
3876 3877
	mutex_lock(&ar->conf_mutex);

3878 3879 3880
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

3881
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
3882
			bool empty;
3883

3884
			spin_lock_bh(&ar->htt.tx_lock);
3885
			empty = (ar->htt.num_pending_tx == 0);
3886
			spin_unlock_bh(&ar->htt.tx_lock);
3887 3888 3889 3890

			skip = (ar->state == ATH10K_STATE_WEDGED);

			(empty || skip);
3891
		}), ATH10K_FLUSH_TIMEOUT_HZ);
3892 3893

	if (ret <= 0 || skip)
3894
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
3895
			    skip, ar->state, ret);
M
Michal Kazior 已提交
3896

3897
skip:
M
Michal Kazior 已提交
3898
	mutex_unlock(&ar->conf_mutex);
3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909
}

/* 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;
}

M
Michal Kazior 已提交
3910 3911 3912 3913 3914 3915 3916
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

3917 3918
	mutex_lock(&ar->conf_mutex);

3919
	ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
M
Michal Kazior 已提交
3920
	if (ret) {
3921 3922
		if (ret == -ETIMEDOUT)
			goto resume;
3923 3924
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3925 3926 3927 3928
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
3929
		ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
M
Michal Kazior 已提交
3930 3931 3932
		goto resume;
	}

3933 3934
	ret = 0;
	goto exit;
M
Michal Kazior 已提交
3935 3936 3937
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
3938
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
3939 3940 3941 3942 3943

	ret = 1;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3944 3945 3946 3947 3948 3949 3950
}

static int ath10k_resume(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
	int ret;

3951 3952
	mutex_lock(&ar->conf_mutex);

M
Michal Kazior 已提交
3953 3954
	ret = ath10k_hif_resume(ar);
	if (ret) {
3955
		ath10k_warn(ar, "failed to resume hif: %d\n", ret);
3956 3957
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3958 3959 3960 3961
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
3962
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
3963 3964
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3965 3966
	}

3967 3968 3969 3970
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3971 3972 3973
}
#endif

3974 3975 3976 3977 3978 3979 3980 3981 3982
static void ath10k_restart_complete(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	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) {
3983
		ath10k_info(ar, "device successfully recovered\n");
3984 3985 3986 3987 3988 3989
		ar->state = ATH10K_STATE_ON;
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024
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];

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

4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109
/* Helper table for legacy fixed_rate/bitrate_mask */
static const u8 cck_ofdm_rate[] = {
	/* CCK */
	3, /* 1Mbps */
	2, /* 2Mbps */
	1, /* 5.5Mbps */
	0, /* 11Mbps */
	/* OFDM */
	3, /* 6Mbps */
	7, /* 9Mbps */
	2, /* 12Mbps */
	6, /* 18Mbps */
	1, /* 24Mbps */
	5, /* 36Mbps */
	0, /* 48Mbps */
	4, /* 54Mbps */
};

/* 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;

	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;

	for (i = 0; i < ar->num_rf_chains; i++)
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

	for (i = 0; i < ar->num_rf_chains; i++)
		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;
4110 4111

		return false;
4112 4113 4114 4115 4116 4117 4118 4119 4120 4121
	}

	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;
4122 4123

		return false;
4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179
	}

	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
4180 4181
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238
			 enum ieee80211_band band,
			 u8 *fixed_rate,
			 u8 *fixed_nss)
{
	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;

		if (band == IEEE80211_BAND_2GHZ && i < 4)
			pream = WMI_RATE_PREAMBLE_CCK;

		if (band == IEEE80211_BAND_5GHZ)
			i += 4;

		if (i >= ARRAY_SIZE(cck_ofdm_rate))
			return false;

		rate = cck_ofdm_rate[i];
		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;

4239
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
4240 4241 4242 4243 4244 4245 4246
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

4247 4248
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
4249 4250 4251 4252 4253 4254 4255 4256 4257
				      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 */
4258
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
4259 4260 4261 4262
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
4263 4264
				       u8 fixed_nss,
				       u8 force_sgi)
4265 4266 4267 4268 4269 4270 4271 4272
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
4273 4274
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
4275 4276 4277
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
4278
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
4279

4280
	if (force_sgi)
4281
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
4282

4283 4284 4285 4286
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
4287
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299
			    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) {
4300
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
4301 4302 4303 4304 4305 4306 4307
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

4308 4309 4310 4311 4312
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
4313
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
4314 4315 4316 4317 4318 4319 4320
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334
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;
4335 4336 4337 4338 4339
	u8 force_sgi;

	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
4340 4341

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
4342
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
4343 4344 4345 4346 4347
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

4348
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4349
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
4350 4351 4352 4353 4354
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
4355 4356
}

4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367
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);

4368
	ath10k_dbg(ar, ATH10K_DBG_MAC,
4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386
		   "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:
4387
			ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
4388
				    sta->bandwidth, sta->addr);
4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413
			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:
4414
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
4415
				    sta->smps_mode, sta->addr);
4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429
			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);
}

4430 4431 4432 4433 4434 4435 4436 4437 4438 4439
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;
}

4440 4441 4442 4443 4444 4445
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)
{
4446
	struct ath10k *ar = hw->priv;
4447 4448
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

4449
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472
		   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;
}

4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492
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,
	.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,
	.set_frag_threshold		= ath10k_set_frag_threshold,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
4493 4494
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
4495
	.restart_complete		= ath10k_restart_complete,
M
Michal Kazior 已提交
4496
	.get_survey			= ath10k_get_survey,
4497
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
4498
	.sta_rc_update			= ath10k_sta_rc_update,
4499
	.get_tsf			= ath10k_get_tsf,
4500
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
4501 4502 4503
	.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
4504 4505 4506

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
4507 4508 4509 4510
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554
};

#define RATETAB_ENT(_rate, _rateid, _flags) { \
	.bitrate		= (_rate), \
	.flags			= (_flags), \
	.hw_value		= (_rateid), \
}

#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[] = {
4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578
	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),
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602
};

static struct ieee80211_rate ath10k_rates[] = {
	/* CCK */
	RATETAB_ENT(10,  0x82, 0),
	RATETAB_ENT(20,  0x84, 0),
	RATETAB_ENT(55,  0x8b, 0),
	RATETAB_ENT(110, 0x96, 0),
	/* OFDM */
	RATETAB_ENT(60,  0x0c, 0),
	RATETAB_ENT(90,  0x12, 0),
	RATETAB_ENT(120, 0x18, 0),
	RATETAB_ENT(180, 0x24, 0),
	RATETAB_ENT(240, 0x30, 0),
	RATETAB_ENT(360, 0x48, 0),
	RATETAB_ENT(480, 0x60, 0),
	RATETAB_ENT(540, 0x6c, 0),
};

#define ath10k_a_rates (ath10k_rates + 4)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4)
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

M
Michal Kazior 已提交
4603
struct ath10k *ath10k_mac_create(size_t priv_size)
4604 4605 4606 4607
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
4608
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627
	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)
4628 4629 4630 4631 4632 4633 4634 4635 4636
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
4637 4638
};

4639
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653
	{
	.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,
	},
4654 4655 4656
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4657
	{
4658 4659
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4660 4661 4662
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
4663
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
4664 4665 4666 4667 4668
		.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
4669
	},
4670 4671 4672 4673 4674 4675
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
4676
	int i;
4677 4678 4679 4680

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

4681 4682 4683 4684 4685 4686 4687
	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);
	}
4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 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 4748 4749

	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;

4750
	for (i = 0; i < ar->num_rf_chains; i++)
4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781
		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) {
4782
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
	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
4808 4809 4810 4811
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829

		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;

		/* vht is not supported in 2.4 GHz */

		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
4830 4831
			ret = -ENOMEM;
			goto err_free;
4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845
		}

		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) |
4846 4847
		BIT(NL80211_IFTYPE_AP);

4848 4849 4850
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

4851 4852 4853 4854
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
4855 4856 4857 4858 4859 4860 4861 4862 4863

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_SUPPORTS_UAPSD |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
			IEEE80211_HW_SUPPORTS_STATIC_SMPS |
4864 4865
			IEEE80211_HW_AP_LINK_PS |
			IEEE80211_HW_SPECTRUM_MGMT;
4866

4867 4868 4869 4870
	/* MSDU can have HTT TX fragment pushed in front. The additional 4
	 * bytes is used for padding/alignment if necessary. */
	ar->hw->extra_tx_headroom += sizeof(struct htt_data_tx_desc_frag)*2 + 4;

4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
		ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;

	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);
4883
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
4884 4885 4886 4887

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
4888
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
4889 4890 4891 4892 4893 4894 4895 4896 4897
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
	/*
	 * 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;

4898 4899 4900 4901 4902 4903 4904 4905
	if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
	} else {
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
4906 4907

		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
4908
	}
4909

4910 4911
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
4912 4913 4914 4915 4916 4917 4918
	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)
4919
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
4920 4921
	}

4922 4923 4924
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
4925
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
4926
		goto err_free;
4927 4928 4929 4930
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
4931
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
4932
		goto err_free;
4933 4934 4935 4936 4937 4938
	}

	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
4939
			goto err_unregister;
4940 4941 4942
	}

	return 0;
M
Michal Kazior 已提交
4943 4944

err_unregister:
4945
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
4946 4947 4948 4949
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

4950 4951 4952 4953 4954 4955 4956
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

J
Janusz Dziedzic 已提交
4957 4958 4959
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

4960 4961 4962 4963 4964
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}