mac.c 153.0 KB
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/*
 * 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>

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#include "hif.h"
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#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
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#include "testmode.h"
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#include "wmi.h"
#include "wmi-ops.h"
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#include "wow.h"
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/*********/
/* Rates */
/*********/

static struct ieee80211_rate ath10k_rates[] = {
	/* CCK */
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	{ .bitrate = 10 },
	{ .bitrate = 20 },
	{ .bitrate = 55 },
	{ .bitrate = 110 },

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	/* OFDM */
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	{ .bitrate = 60 },
	{ .bitrate = 90 },
	{ .bitrate = 120 },
	{ .bitrate = 180 },
	{ .bitrate = 240 },
	{ .bitrate = 360 },
	{ .bitrate = 480 },
	{ .bitrate = 540 },
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};

#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))

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static bool ath10k_mac_bitrate_is_cck(int bitrate)
{
	switch (bitrate) {
	case 10:
	case 20:
	case 55:
	case 110:
		return true;
	}

	return false;
}

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

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

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
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			   const u8 *macaddr, u32 flags)
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{
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	struct ath10k *ar = arvif->ar;
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	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
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		.key_flags = flags,
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		.macaddr = macaddr,
	};

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

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	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
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		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
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		break;
	case WLAN_CIPHER_SUITE_TKIP:
		arg.key_cipher = WMI_CIPHER_TKIP;
		arg.key_txmic_len = 8;
		arg.key_rxmic_len = 8;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		arg.key_cipher = WMI_CIPHER_WEP;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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		WARN_ON(1);
		return -EINVAL;
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	default:
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		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
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		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,
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			      const u8 *macaddr, u32 flags)
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{
	struct ath10k *ar = arvif->ar;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	reinit_completion(&ar->install_key_done);
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	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
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	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;
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	u32 flags;
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	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;
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		flags = 0;
		flags |= WMI_KEY_PAIRWISE;

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		/* set TX_USAGE flag for default key id */
		if (arvif->def_wep_key_idx == i)
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			flags |= WMI_KEY_TX_USAGE;
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		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
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					 addr, flags);
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		if (ret)
			return ret;

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		spin_lock_bh(&ar->data_lock);
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		peer->keys[i] = arvif->wep_keys[i];
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		spin_unlock_bh(&ar->data_lock);
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	}

	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;
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	u32 flags = 0;
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	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;

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

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

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		spin_lock_bh(&ar->data_lock);
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		peer->keys[i] = NULL;
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		spin_unlock_bh(&ar->data_lock);
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	}

	return first_errno;
}

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bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
				    u8 keyidx)
{
	struct ath10k_peer *peer;
	int i;

	lockdep_assert_held(&ar->data_lock);

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

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

	return false;
}

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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;
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	u32 flags = 0;
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	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) {
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					ether_addr_copy(addr, peer->addr);
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					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;
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		/* key flags are not required to delete the key */
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		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
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		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
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			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
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				    addr, ret);
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	}

	return first_errno;
}

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static int ath10k_mac_vif_sta_fix_wep_key(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	enum nl80211_iftype iftype = arvif->vif->type;
	struct ieee80211_key_conf *key;
	u32 flags = 0;
	int num = 0;
	int i;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	if (iftype != NL80211_IFTYPE_STATION)
		return 0;

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

	if (num != 1)
		return 0;

	flags |= WMI_KEY_PAIRWISE;
	flags |= WMI_KEY_TX_USAGE;

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

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

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

	return 0;
}

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/*********************/
/* 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:
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			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
				phymode = MODE_11B;
			else
				phymode = MODE_11G;
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			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		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;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		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;
	}
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
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	if (ret) {
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		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
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			    addr, vdev_id, ret);
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		return ret;
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	}
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	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
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	if (ret) {
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		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
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			    addr, vdev_id, ret);
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		return ret;
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	}
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	ar->num_peers++;
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	return 0;
}

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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) {
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		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		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) {
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		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		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) {
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		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		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) {
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		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return ret;
	}

	return 0;
}

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

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

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

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

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

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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;

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	ar->num_peers--;

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	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;

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

		list_del(&peer->list);
		kfree(peer);
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		ar->num_peers--;
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	}
	spin_unlock_bh(&ar->data_lock);
}

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static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
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	ar->num_peers = 0;
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	ar->num_stations = 0;
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}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

	return 0;
}

664 665 666 667
/************************/
/* Interface management */
/************************/

668 669 670 671 672 673 674 675 676 677 678 679 680
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);

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681 682 683 684
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

685 686 687
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
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688
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
}

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;
	}
}

706 707 708 709
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

715 716 717 718 719 720 721 722
	ret = wait_for_completion_timeout(&ar->vdev_setup_done,
					  ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

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static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
724
{
725 726
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
727 728 729 730 731 732 733
	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;
734
	arg.channel.band_center_freq1 = chandef->center_freq1;
735 736 737

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
738
	arg.channel.mode = chan_to_phymode(chandef);
739 740
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
741

742
	arg.channel.min_power = 0;
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	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;
746

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	reinit_completion(&ar->vdev_setup_done);

749 750
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
751
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
752
			    vdev_id, ret);
753 754 755 756 757
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
758
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
759
			    vdev_id, ret);
760 761 762 763 764
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
765
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
766
			    vdev_id, ret);
767 768 769 770 771
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

772
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
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		   ar->monitor_vdev_id);
774 775 776 777 778
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
779
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
780
			    ar->monitor_vdev_id, ret);
781 782 783 784

	return ret;
}

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static int ath10k_monitor_vdev_stop(struct ath10k *ar)
786 787 788 789 790
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

791 792
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
793
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
794
			    ar->monitor_vdev_id, ret);
795

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	reinit_completion(&ar->vdev_setup_done);

798 799
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
800
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
801
			    ar->monitor_vdev_id, ret);
802 803 804

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
805
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
806
			    ar->monitor_vdev_id, ret);
807

808
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
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		   ar->monitor_vdev_id);
810 811 812
	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
814 815 816 817 818
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (ar->free_vdev_map == 0) {
820
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
821 822 823
		return -ENOMEM;
	}

B
Ben Greear 已提交
824
	bit = __ffs64(ar->free_vdev_map);
B
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825

B
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826
	ar->monitor_vdev_id = bit;
827 828 829 830 831

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
832
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
833
			    ar->monitor_vdev_id, ret);
B
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834
		return ret;
835 836
	}

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837
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
838
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
839 840 841 842 843
		   ar->monitor_vdev_id);

	return 0;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
845 846 847 848 849 850 851
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
852
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
853
			    ar->monitor_vdev_id, ret);
854 855 856
		return ret;
	}

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857
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
858

859
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
860 861 862 863
		   ar->monitor_vdev_id);
	return ret;
}

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864 865 866 867 868 869 870 871
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
872
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
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		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
878
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
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		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
884
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
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	return 0;
}

889
static int ath10k_monitor_stop(struct ath10k *ar)
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{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
896
	if (ret) {
897
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
898 899
		return ret;
	}
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	ret = ath10k_monitor_vdev_delete(ar);
902
	if (ret) {
903
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
904 905
		return ret;
	}
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Michal Kazior 已提交
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	ar->monitor_started = false;
908
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
909 910 911 912

	return 0;
}

913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931
static bool ath10k_mac_should_disable_promisc(struct ath10k *ar)
{
	struct ath10k_vif *arvif;

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

	if (!ar->num_started_vdevs)
		return false;

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

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

932 933 934 935 936 937 938
static int ath10k_monitor_recalc(struct ath10k *ar)
{
	bool should_start;

	lockdep_assert_held(&ar->conf_mutex);

	should_start = ar->monitor ||
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		       !ath10k_mac_should_disable_promisc(ar) ||
940 941 942 943 944 945 946 947 948 949 950
		       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);
951 952

	return ath10k_monitor_stop(ar);
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}

955 956 957 958 959 960 961 962 963
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;

964
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
965 966 967 968

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
969 970 971
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
972 973 974 975 976

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

977 978 979 980 981 982 983 984
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

985
	ret = ath10k_monitor_recalc(ar);
986
	if (ret) {
987
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
988 989 990 991
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

992
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
		   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);
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	ath10k_monitor_stop(ar);
1008

1009
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1010 1011 1012 1013

	return 0;
}

1014
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1015 1016 1017 1018 1019 1020 1021
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

1022
	if (!ar->radar_enabled)
1023 1024
		return;

1025
	if (ar->num_started_vdevs > 0)
1026 1027 1028 1029 1030 1031 1032 1033 1034
		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.
		 */
1035
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1036 1037 1038 1039
		ieee80211_radar_detected(ar->hw);
	}
}

1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

	WARN_ON(ar->num_started_vdevs == 0);

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

	return ret;
}

1073
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
M
Michal Kazior 已提交
1074 1075 1076 1077
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
1078
	int ret = 0, ret2;
M
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1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109

	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;
	}

1110
	ath10k_dbg(ar, ATH10K_DBG_MAC,
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1111 1112 1113 1114
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

1115 1116 1117 1118 1119
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

M
Michal Kazior 已提交
1120
	if (ret) {
1121
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
M
Michal Kazior 已提交
1122 1123 1124 1125 1126 1127
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1128 1129 1130
		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
M
Michal Kazior 已提交
1131 1132 1133
		return ret;
	}

1134 1135 1136
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

1137 1138 1139 1140 1141 1142 1143 1144 1145 1146
	ret = ath10k_monitor_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "mac failed to recalc monitor for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
		ret2 = ath10k_vdev_stop(arvif);
		if (ret2)
			ath10k_warn(ar, "mac failed to stop vdev %i restart %d: %d\n",
				    arg.vdev_id, restart, ret2);
	}

M
Michal Kazior 已提交
1147 1148 1149
	return ret;
}

1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
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);
}

1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 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 1225 1226 1227 1228 1229 1230 1231 1232 1233
static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif,
				       struct sk_buff *bcn)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_mgmt *mgmt;
	const u8 *p2p_ie;
	int ret;

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

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

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

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

	return 0;
}

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

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

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

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

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

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

	return 0;
}

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

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

1234 1235 1236 1237
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
	bcn = ieee80211_beacon_get_template(hw, vif, &offs);
	if (!bcn) {
		ath10k_warn(ar, "failed to get beacon template from mac80211\n");
		return -EPERM;
	}

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

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

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

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

	return 0;
}

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

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

1283 1284 1285
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303
	prb = ieee80211_proberesp_get(hw, vif);
	if (!prb) {
		ath10k_warn(ar, "failed to get probe resp template from mac80211\n");
		return -EPERM;
	}

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

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

	return 0;
}

1304
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1305
				     struct ieee80211_bss_conf *info)
1306
{
1307
	struct ath10k *ar = arvif->ar;
1308 1309
	int ret = 0;

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1310 1311
	lockdep_assert_held(&arvif->ar->conf_mutex);

1312 1313
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
1314 1315 1316

		arvif->is_started = false;
		arvif->is_up = false;
1317 1318

		spin_lock_bh(&arvif->ar->data_lock);
1319
		ath10k_mac_vif_beacon_free(arvif);
1320 1321
		spin_unlock_bh(&arvif->ar->data_lock);

1322 1323 1324 1325 1326 1327 1328 1329 1330
		return;
	}

	arvif->tx_seq_no = 0x1000;

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

1331
	arvif->aid = 0;
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	ether_addr_copy(arvif->bssid, info->bssid);
1333 1334 1335

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1336
	if (ret) {
1337
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1338
			    arvif->vdev_id, ret);
1339
		ath10k_vdev_stop(arvif);
1340 1341
		return;
	}
1342 1343 1344 1345

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

1346
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1347 1348 1349 1350 1351 1352
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1353
	struct ath10k *ar = arvif->ar;
1354
	u32 vdev_param;
1355 1356
	int ret = 0;

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

1359 1360 1361
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
1362
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1363 1364
				    self_peer, arvif->vdev_id, ret);

1365
		if (is_zero_ether_addr(arvif->bssid))
1366 1367
			return;

1368
		memset(arvif->bssid, 0, ETH_ALEN);
1369 1370 1371 1372

		return;
	}

1373 1374
	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer,
				 WMI_PEER_TYPE_DEFAULT);
1375
	if (ret) {
1376
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1377 1378 1379 1380
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1381 1382
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1383 1384
					ATH10K_DEFAULT_ATIM);
	if (ret)
1385
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1386 1387 1388
			    arvif->vdev_id, ret);
}

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static int ath10k_mac_vif_recalc_ps_wake_threshold(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	u32 value;
	int ret;

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

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

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

	return 0;
}

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

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

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

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

	return 0;
}

1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
static int ath10k_mac_ps_vif_count(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

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

	return num;
}

1454
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1455
{
1456
	struct ath10k *ar = arvif->ar;
1457
	struct ieee80211_vif *vif = arvif->vif;
1458
	struct ieee80211_conf *conf = &ar->hw->conf;
1459 1460 1461
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1462
	int ps_timeout;
1463
	bool enable_ps;
1464

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

1467 1468
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1469

1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
	enable_ps = arvif->ps;

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

	if (enable_ps) {
1481 1482 1483
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1484 1485 1486 1487 1488 1489 1490
		ps_timeout = conf->dynamic_ps_timeout;
		if (ps_timeout == 0) {
			/* Firmware doesn't like 0 */
			ps_timeout = ieee80211_tu_to_usec(
				vif->bss_conf.beacon_int) / 1000;
		}

1491
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1492
						  ps_timeout);
1493
		if (ret) {
1494
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1495
				    arvif->vdev_id, ret);
1496
			return ret;
1497 1498 1499 1500 1501
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1502
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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		   arvif->vdev_id, psmode ? "enable" : "disable");

1505 1506
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1507
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1508
			    psmode, arvif->vdev_id, ret);
1509 1510 1511 1512
		return ret;
	}

	return 0;
1513 1514
}

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static int ath10k_mac_vif_disable_keepalive(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct wmi_sta_keepalive_arg arg = {};
	int ret;

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

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

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

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

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

	return 0;
}

1547 1548 1549 1550 1551 1552
static void ath10k_mac_vif_ap_csa_count_down(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_vif *vif = arvif->vif;
	int ret;

1553 1554 1555 1556 1557
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return;

	if (!vif->csa_active)
		return;

	if (!arvif->is_up)
		return;

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

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

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

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

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

1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
static void ath10k_mac_handle_beacon_iter(void *data, u8 *mac,
					  struct ieee80211_vif *vif)
{
	struct sk_buff *skb = data;
	struct ieee80211_mgmt *mgmt = (void *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

	cancel_delayed_work(&arvif->connection_loss_work);
}

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

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

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

	if (!arvif->is_up)
		return;

	ieee80211_beacon_loss(vif);

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

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

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

	if (!arvif->is_up)
		return;

	ieee80211_connection_loss(vif);
}

1664 1665 1666 1667
/**********************/
/* Station management */
/**********************/

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1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684
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;
}

1685
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
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Michal Kazior 已提交
1686
				      struct ieee80211_vif *vif,
1687 1688 1689
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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Michal Kazior 已提交
1690 1691
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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1692 1693
	lockdep_assert_held(&ar->conf_mutex);

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1694
	ether_addr_copy(arg->addr, sta->addr);
1695 1696 1697
	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;
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	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1699
	arg->peer_num_spatial_streams = 1;
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Michal Kazior 已提交
1700
	arg->peer_caps = vif->bss_conf.assoc_capability;
1701 1702 1703
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
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Michal Kazior 已提交
1704
				       struct ieee80211_vif *vif,
1705 1706 1707 1708 1709 1710 1711
				       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;

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Michal Kazior 已提交
1712 1713
	lockdep_assert_held(&ar->conf_mutex);

1714
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
1715 1716
			       info->bssid, NULL, 0, IEEE80211_BSS_TYPE_ANY,
			       IEEE80211_PRIVACY_ANY);
1717 1718 1719 1720 1721 1722 1723 1724 1725
	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,
1726 1727 1728
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1729 1730 1731 1732 1733 1734
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1735
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1736 1737 1738 1739
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
1740
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752
		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;
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Michal Kazior 已提交
1753
	u8 rate;
1754 1755
	int i;

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

1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
	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;

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		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
1770 1771 1772 1773 1774 1775 1776 1777 1778 1779
		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;
1780
	u32 stbc;
1781

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1782 1783
	lockdep_assert_held(&ar->conf_mutex);

1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832
	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;

1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849
	/*
	 * 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;
	}
1850

1851
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
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1852
		   arg->addr,
1853 1854 1855 1856
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1857 1858 1859
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1860 1861 1862
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1863
	int ret = 0;
1864

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Michal Kazior 已提交
1865 1866
	lockdep_assert_held(&ar->conf_mutex);

1867
	if (sta->wme && sta->uapsd_queues) {
1868
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886
			   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;

1887 1888 1889 1890 1891
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1892
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1893
				    arvif->vdev_id, ret);
1894 1895
			return ret;
		}
1896

1897 1898 1899 1900 1901
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1902
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1903
				    arvif->vdev_id, ret);
1904 1905
			return ret;
		}
1906 1907 1908 1909 1910

		/* 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 */
1911
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1912 1913
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1914
		if (ret) {
1915
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1916
				    arvif->vdev_id, ret);
1917 1918
			return ret;
		}
1919 1920
	}

1921
	return 0;
1922 1923 1924 1925 1926 1927 1928
}

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;
1929
	u8 ampdu_factor;
1930 1931 1932 1933 1934

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
1935 1936 1937 1938

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

1939 1940
	arg->peer_vht_caps = vht_cap->cap;

1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952
	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);

1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
	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);

1965
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
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1966
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
1967 1968 1969
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
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				    struct ieee80211_vif *vif,
1971 1972 1973
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
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Michal Kazior 已提交
1974 1975
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

1976 1977
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
1978 1979 1980 1981 1982 1983 1984
		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;
		}
1985 1986
		break;
	case WMI_VDEV_TYPE_STA:
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		if (vif->bss_conf.qos)
1988
			arg->peer_flags |= WMI_PEER_QOS;
1989
		break;
1990 1991 1992 1993
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
1994 1995 1996
	default:
		break;
	}
1997 1998 1999

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
2000 2001
}

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static bool ath10k_mac_sta_has_11g_rates(struct ieee80211_sta *sta)
{
	/* First 4 rates in ath10k_rates are CCK (11b) rates. */
	return sta->supp_rates[IEEE80211_BAND_2GHZ] >> 4;
}

2008
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
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2009
					struct ieee80211_vif *vif,
2010 2011 2012 2013 2014 2015 2016
					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:
2017 2018 2019 2020 2021 2022
		if (sta->vht_cap.vht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
		} else if (sta->ht_cap.ht_supported) {
2023 2024 2025 2026
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
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		} else if (ath10k_mac_sta_has_11g_rates(sta)) {
2028
			phymode = MODE_11G;
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2029 2030
		} else {
			phymode = MODE_11B;
2031 2032 2033 2034
		}

		break;
	case IEEE80211_BAND_5GHZ:
2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045
		/*
		 * 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) {
2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2059
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
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		   sta->addr, ath10k_wmi_phymode_str(phymode));
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2062 2063 2064 2065
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2066
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
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2067
				     struct ieee80211_vif *vif,
2068 2069
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2070
{
M
Michal Kazior 已提交
2071 2072
	lockdep_assert_held(&ar->conf_mutex);

2073
	memset(arg, 0, sizeof(*arg));
2074

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2075 2076
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
2077 2078 2079
	ath10k_peer_assoc_h_rates(ar, sta, arg);
	ath10k_peer_assoc_h_ht(ar, sta, arg);
	ath10k_peer_assoc_h_vht(ar, sta, arg);
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Michal Kazior 已提交
2080 2081
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2082

2083
	return 0;
2084 2085
}

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2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112
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]);
}

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2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 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 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174
static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
				      struct ieee80211_vif *vif,
				      struct ieee80211_sta_vht_cap vht_cap)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;
	u32 param;
	u32 value;

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

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

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

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

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

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

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

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

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFEE)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFER)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

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

	return 0;
}

2175 2176 2177 2178 2179 2180 2181
/* 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);
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2182
	struct ieee80211_sta_ht_cap ht_cap;
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2183
	struct ieee80211_sta_vht_cap vht_cap;
2184
	struct wmi_peer_assoc_complete_arg peer_arg;
2185 2186 2187
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
2188 2189
	lockdep_assert_held(&ar->conf_mutex);

2190 2191 2192
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2193 2194 2195 2196
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2197
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2198
			    bss_conf->bssid, arvif->vdev_id);
2199 2200 2201 2202
		rcu_read_unlock();
		return;
	}

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2203 2204 2205
	/* 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;
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	vht_cap = ap_sta->vht_cap;
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2207

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2208
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2209
	if (ret) {
2210
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2211
			    bss_conf->bssid, arvif->vdev_id, ret);
2212 2213 2214 2215 2216 2217
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2218 2219
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2220
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2221
			    bss_conf->bssid, arvif->vdev_id, ret);
2222 2223 2224
		return;
	}

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Michal Kazior 已提交
2225 2226
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2227
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2228
			    arvif->vdev_id, ret);
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		return;
	}

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2232 2233 2234 2235 2236 2237 2238
	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i on bss %pM: %d\n",
			    arvif->vdev_id, bss_conf->bssid, ret);
		return;
	}

2239
	ath10k_dbg(ar, ATH10K_DBG_MAC,
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2240 2241 2242
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2243 2244
	WARN_ON(arvif->is_up);

2245
	arvif->aid = bss_conf->aid;
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2246
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2247 2248 2249

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2250
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2251
			    arvif->vdev_id, ret);
2252 2253 2254 2255
		return;
	}

	arvif->is_up = true;
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267

	/* Workaround: Some firmware revisions (tested with qca6174
	 * WLAN.RM.2.0-00073) have buggy powersave state machine and must be
	 * poked with peer param command.
	 */
	ret = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, arvif->bssid,
					WMI_PEER_DUMMY_VAR, 1);
	if (ret) {
		ath10k_warn(ar, "failed to poke peer %pM param for ps workaround on vdev %i: %d\n",
			    arvif->bssid, arvif->vdev_id, ret);
		return;
	}
2268 2269 2270 2271 2272 2273 2274
}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2275
	struct ieee80211_sta_vht_cap vht_cap = {};
2276 2277
	int ret;

M
Michal Kazior 已提交
2278 2279
	lockdep_assert_held(&ar->conf_mutex);

2280 2281
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2282

2283
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2284 2285 2286
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
2287

2288 2289
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2290 2291 2292 2293 2294 2295 2296
	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return;
	}

2297
	arvif->is_up = false;
2298 2299

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2300 2301
}

M
Michal Kazior 已提交
2302 2303 2304 2305
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2306
{
M
Michal Kazior 已提交
2307
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2308
	struct wmi_peer_assoc_complete_arg peer_arg;
2309 2310
	int ret = 0;

M
Michal Kazior 已提交
2311 2312
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2313
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2314
	if (ret) {
2315
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2316
			    sta->addr, arvif->vdev_id, ret);
2317 2318 2319
		return ret;
	}

2320
	peer_arg.peer_reassoc = reassoc;
2321
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2322
	if (ret) {
2323
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2324
			    sta->addr, arvif->vdev_id, ret);
2325 2326 2327
		return ret;
	}

2328 2329 2330 2331 2332 2333
	/* Re-assoc is run only to update supported rates for given station. It
	 * doesn't make much sense to reconfigure the peer completely.
	 */
	if (!reassoc) {
		ret = ath10k_setup_peer_smps(ar, arvif, sta->addr,
					     &sta->ht_cap);
2334
		if (ret) {
2335
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2336 2337 2338 2339
				    arvif->vdev_id, ret);
			return ret;
		}

2340 2341 2342 2343 2344 2345
		ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
		if (ret) {
			ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
				    sta->addr, arvif->vdev_id, ret);
			return ret;
		}
2346

2347 2348 2349 2350 2351 2352 2353 2354 2355 2356
		if (!sta->wme) {
			arvif->num_legacy_stations++;
			ret  = ath10k_recalc_rtscts_prot(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
		}

2357 2358 2359 2360 2361 2362 2363 2364
		/* Plumb cached keys only for static WEP */
		if (arvif->def_wep_key_idx != -1) {
			ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
			if (ret) {
				ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
2365
		}
2366 2367
	}

2368 2369 2370
	return ret;
}

M
Michal Kazior 已提交
2371 2372
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2373 2374
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2375
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2376 2377
	int ret = 0;

M
Michal Kazior 已提交
2378 2379
	lockdep_assert_held(&ar->conf_mutex);

2380 2381 2382 2383
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2384
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2385 2386 2387 2388 2389
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2390 2391
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2392
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2393
			    arvif->vdev_id, ret);
2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416
		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
2417 2418
	lockdep_assert_held(&ar->conf_mutex);

2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454
	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 =
2455
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2456 2457 2458 2459

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

2460 2461 2462
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2463
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2464 2465 2466
			ch->passive = passive;

			ch->freq = channel->center_freq;
2467
			ch->band_center_freq1 = channel->center_freq;
2468
			ch->min_power = 0;
M
Michal Kazior 已提交
2469 2470 2471
			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;
2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484
			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;

2485
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2486 2487
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500
				   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;
}

2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516
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;
}

2517
static void ath10k_regd_update(struct ath10k *ar)
2518 2519 2520
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2521 2522
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2523

2524
	lockdep_assert_held(&ar->conf_mutex);
2525 2526 2527

	ret = ath10k_update_channel_list(ar);
	if (ret)
2528
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2529 2530

	regpair = ar->ath_common.regulatory.regpair;
2531

2532 2533 2534 2535 2536 2537 2538
	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;
	}

2539 2540 2541
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2542 2543 2544
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2545
					    regpair->reg_2ghz_ctl,
2546 2547
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2548
	if (ret)
2549
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2550
}
M
Michal Kazior 已提交
2551

2552 2553 2554 2555 2556
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
2557
	bool result;
2558 2559 2560

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

J
Janusz Dziedzic 已提交
2561
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2562
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
2563 2564 2565 2566
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
2567
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
2568 2569 2570
				    request->dfs_region);
	}

2571 2572 2573
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
2574
	mutex_unlock(&ar->conf_mutex);
2575 2576 2577 2578 2579 2580
}

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

2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594
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;
}

2595
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
2596
{
2597 2598
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
2599

M
Michal Kazior 已提交
2600
	if (ar->monitor_started)
2601 2602
		return ar->monitor_vdev_id;

2603
	ath10k_warn(ar, "failed to resolve vdev id\n");
2604 2605 2606
	return 0;
}

2607 2608
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
2609
		       struct ieee80211_sta *sta, struct sk_buff *skb)
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640
{
	const struct ieee80211_hdr *hdr = (void *)skb->data;
	__le16 fc = hdr->frame_control;

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

	if (ieee80211_is_mgmt(fc))
		return ATH10K_HW_TXRX_MGMT;

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

2641 2642 2643 2644 2645 2646 2647 2648 2649
	/* Workaround:
	 *
	 * Some wmi-tlv firmwares for qca6174 have broken Tx key selection for
	 * NativeWifi txmode - it selects AP key instead of peer key. It seems
	 * to work with Ethernet txmode so use it.
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

2650 2651 2652
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

M
Michal Kazior 已提交
2653 2654
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
2655
 */
M
Michal Kazior 已提交
2656
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
2657 2658
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
2659
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
2660 2661 2662 2663 2664 2665
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
2666 2667 2668
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
2669

2670 2671 2672
	/* Some firmware revisions don't handle sending QoS NullFunc well.
	 * These frames are mainly used for CQM purposes so it doesn't really
	 * matter whether QoS NullFunc or NullFunc are sent.
2673
	 */
M
Michal Kazior 已提交
2674
	hdr = (void *)skb->data;
2675
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
2676
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
2677 2678

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2679 2680
}

2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707
static void ath10k_tx_h_8023(struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct rfc1042_hdr *rfc1042;
	struct ethhdr *eth;
	size_t hdrlen;
	u8 da[ETH_ALEN];
	u8 sa[ETH_ALEN];
	__be16 type;

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

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

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

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

M
Michal Kazior 已提交
2708 2709 2710
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

M
Michal Kazior 已提交
2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743
static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
{
	/* FIXME: Not really sure since when the behaviour changed. At some
	 * point new firmware stopped requiring creation of peer entries for
	 * offchannel tx (and actually creating them causes issues with wmi-htc
	 * tx credit replenishment and reliability). Assuming it's at least 3.4
	 * because that's when the `freq` was introduced to TX_FRM HTT command.
	 */
	return !(ar->htt.target_version_major >= 3 &&
		 ar->htt.target_version_minor >= 4);
}

2744
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
2745
{
2746
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
2747
	int ret = 0;
2748

2749 2750 2751 2752 2753 2754
	spin_lock_bh(&ar->data_lock);

	if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
		ath10k_warn(ar, "wmi mgmt tx queue is full\n");
		ret = -ENOSPC;
		goto unlock;
M
Michal Kazior 已提交
2755 2756
	}

2757 2758
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
2759

2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

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

	switch (cb->txmode) {
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
		ret = ath10k_htt_tx(htt, skb);
		break;
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features))
			ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		else if (ar->htt.target_version_major >= 3)
			ret = ath10k_htt_tx(htt, skb);
		else
			ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
2787
	}
2788 2789

	if (ret) {
2790 2791
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
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 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832
		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);

2833
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2834 2835 2836 2837
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2838
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2839 2840 2841 2842 2843 2844

		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
2845
			/* FIXME: should this use ath10k_warn()? */
2846
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2847 2848 2849
				   peer_addr, vdev_id);

		if (!peer) {
2850 2851
			ret = ath10k_peer_create(ar, vdev_id, peer_addr,
						 WMI_PEER_TYPE_DEFAULT);
2852
			if (ret)
2853
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2854 2855 2856 2857
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2858
		reinit_completion(&ar->offchan_tx_completed);
2859 2860 2861
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

2862
		ath10k_mac_tx(ar, skb);
2863 2864 2865

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
2866
		if (ret == 0)
2867
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2868 2869 2870 2871 2872
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2873
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2874 2875 2876 2877 2878 2879 2880
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905
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);
2906
		if (ret) {
2907
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2908
				    ret);
2909 2910
			ieee80211_free_txskb(ar->hw, skb);
		}
2911 2912 2913
	}
}

2914 2915 2916 2917
/************/
/* Scanning */
/************/

2918
void __ath10k_scan_finish(struct ath10k *ar)
2919
{
2920
	lockdep_assert_held(&ar->data_lock);
2921

2922 2923 2924 2925 2926 2927
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
		if (ar->scan.is_roc)
			ieee80211_remain_on_channel_expired(ar->hw);
2928
		/* fall through */
2929 2930
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941
			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;
2942
	}
2943
}
2944

2945 2946 2947 2948
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2949 2950 2951
	spin_unlock_bh(&ar->data_lock);
}

2952
static int ath10k_scan_stop(struct ath10k *ar)
2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964
{
	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) {
2965
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2966
		goto out;
2967 2968 2969
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2970
	if (ret == 0) {
2971
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2972 2973 2974 2975
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
2976

2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997
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);
2998 2999

	spin_lock_bh(&ar->data_lock);
3000 3001 3002 3003 3004 3005 3006 3007 3008

	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:
3009
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
3010 3011 3012 3013 3014 3015 3016 3017 3018
			    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)
3019
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
3020 3021 3022

		spin_lock_bh(&ar->data_lock);
		break;
3023
	}
3024

3025
	spin_unlock_bh(&ar->data_lock);
3026
}
3027

3028 3029 3030 3031 3032 3033 3034 3035
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);
3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050
}

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) {
3051 3052
		ret = ath10k_scan_stop(ar);
		if (ret)
3053
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3054 3055

		return -ETIMEDOUT;
3056 3057
	}

3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068
	/* If we failed to start the scan, return error code at
	 * this point.  This is probably due to some issue in the
	 * firmware, but no need to wedge the driver due to that...
	 */
	spin_lock_bh(&ar->data_lock);
	if (ar->scan.state == ATH10K_SCAN_IDLE) {
		spin_unlock_bh(&ar->data_lock);
		return -EINVAL;
	}
	spin_unlock_bh(&ar->data_lock);

3069 3070 3071
	/* 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));
3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082
	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
3083
	struct ath10k *ar = hw->priv;
3084
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
3085
	struct ieee80211_vif *vif = info->control.vif;
3086
	struct ieee80211_sta *sta = control->sta;
3087
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3088
	__le16 fc = hdr->frame_control;
3089 3090 3091

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
3092
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
3093

M
Michal Kazior 已提交
3094
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
M
Michal Kazior 已提交
3095
	ATH10K_SKB_CB(skb)->htt.freq = 0;
M
Michal Kazior 已提交
3096
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
3097
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
3098
	ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb);
3099
	ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc);
3100

3101 3102 3103
	switch (ATH10K_SKB_CB(skb)->txmode) {
	case ATH10K_HW_TXRX_MGMT:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
M
Michal Kazior 已提交
3104 3105 3106
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117
		break;
	case ATH10K_HW_TXRX_ETHERNET:
		ath10k_tx_h_8023(skb);
		break;
	case ATH10K_HW_TXRX_RAW:
		/* FIXME: Packet injection isn't implemented. It should be
		 * doable with firmware 10.2 on qca988x.
		 */
		WARN_ON_ONCE(1);
		ieee80211_free_txskb(hw, skb);
		return;
3118
	}
3119 3120 3121

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
3122
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
3123
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
3124 3125
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
3126 3127 3128
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
3129

M
Michal Kazior 已提交
3130 3131 3132 3133 3134 3135 3136
			ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
				   skb);

			skb_queue_tail(&ar->offchan_tx_queue, skb);
			ieee80211_queue_work(hw, &ar->offchan_tx_work);
			return;
		}
3137 3138
	}

3139
	ath10k_mac_tx(ar, skb);
3140 3141
}

3142
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
3143
void ath10k_drain_tx(struct ath10k *ar)
3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154
{
	/* 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);
}

3155
void ath10k_halt(struct ath10k *ar)
3156
{
3157 3158
	struct ath10k_vif *arvif;

3159 3160
	lockdep_assert_held(&ar->conf_mutex);

3161 3162 3163 3164 3165
	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
3166
		ath10k_monitor_stop(ar);
3167 3168

	ar->monitor_started = false;
M
Michal Kazior 已提交
3169

3170
	ath10k_scan_finish(ar);
3171 3172 3173 3174 3175
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
3176 3177
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
3178 3179 3180
	spin_unlock_bh(&ar->data_lock);
}

3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199
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;
}

3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212
static void ath10k_check_chain_mask(struct ath10k *ar, u32 cm, const char *dbg)
{
	/* It is not clear that allowing gaps in chainmask
	 * is helpful.  Probably it will not do what user
	 * is hoping for, so warn in that case.
	 */
	if (cm == 15 || cm == 7 || cm == 3 || cm == 1 || cm == 0)
		return;

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

3213 3214 3215 3216 3217 3218
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3219 3220 3221
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

3222 3223 3224 3225 3226 3227 3228 3229 3230 3231
	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) {
3232
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
3233 3234 3235 3236 3237 3238 3239
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
3240
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258
			    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;
}

3259 3260 3261
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
3262
	int ret = 0;
3263

3264 3265 3266 3267 3268 3269 3270
	/*
	 * 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
3271 3272
	mutex_lock(&ar->conf_mutex);

3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284
	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);
3285
		ret = -EINVAL;
3286
		goto err;
K
Kalle Valo 已提交
3287 3288 3289
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
3290 3291 3292 3293
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
3294
		ath10k_err(ar, "Could not init hif: %d\n", ret);
3295
		goto err_off;
3296 3297
	}

K
Kalle Valo 已提交
3298
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
3299
	if (ret) {
3300
		ath10k_err(ar, "Could not init core: %d\n", ret);
3301
		goto err_power_down;
3302 3303
	}

3304
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
3305
	if (ret) {
3306
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
3307 3308
		goto err_core_stop;
	}
3309

3310
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
3311
	if (ret) {
3312
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
3313 3314
		goto err_core_stop;
	}
3315

3316 3317 3318 3319
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331
	/*
	 * 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) {
3332
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
3333
			    ret);
3334
		goto err_core_stop;
3335 3336
	}

3337 3338 3339 3340 3341 3342 3343 3344
	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->ani_enable, 1);
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

3345 3346
	ar->ani_enabled = true;

3347
	ar->num_started_vdevs = 0;
3348 3349
	ath10k_regd_update(ar);

3350
	ath10k_spectral_start(ar);
3351
	ath10k_thermal_set_throttling(ar);
3352

3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365
	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
3366
	mutex_unlock(&ar->conf_mutex);
3367
	return ret;
3368 3369 3370 3371 3372 3373
}

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

3374 3375
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
3376
	mutex_lock(&ar->conf_mutex);
3377
	if (ar->state != ATH10K_STATE_OFF) {
3378
		ath10k_halt(ar);
3379 3380
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
3381 3382
	mutex_unlock(&ar->conf_mutex);

3383
	cancel_delayed_work_sync(&ar->scan.timeout);
3384
	cancel_work_sync(&ar->restart_work);
3385 3386
}

3387
static int ath10k_config_ps(struct ath10k *ar)
3388
{
3389 3390
	struct ath10k_vif *arvif;
	int ret = 0;
3391 3392 3393

	lockdep_assert_held(&ar->conf_mutex);

3394 3395 3396
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
3397
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
3398 3399 3400
			break;
		}
	}
3401

3402
	return ret;
3403 3404
}

3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434
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);

3435
	ath10k_dbg(ar, ATH10K_DBG_MAC,
3436 3437 3438 3439 3440 3441 3442 3443
		   "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
3444
	if (ar->monitor_started)
3445
		ath10k_monitor_stop(ar);
3446 3447 3448 3449 3450

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

3451 3452 3453
		if (!arvif->is_up)
			continue;

3454 3455 3456
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3457
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
3458
		if (ret) {
3459
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
3460 3461 3462 3463 3464
				    arvif->vdev_id, ret);
			continue;
		}
	}

3465
	/* all vdevs are downed now - attempt to restart and re-up them */
3466 3467 3468 3469 3470 3471 3472 3473

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

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

3474 3475 3476 3477 3478 3479 3480 3481 3482 3483
		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
				    ret);

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

3484
		ret = ath10k_vdev_restart(arvif);
3485
		if (ret) {
3486
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
3487 3488 3489 3490 3491 3492 3493 3494 3495 3496
				    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) {
3497
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
3498 3499 3500 3501 3502
				    arvif->vdev_id, ret);
			continue;
		}
	}

3503
	ath10k_monitor_recalc(ar);
3504 3505
}

3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562
static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower)
{
	int ret;
	u32 param;

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

	return 0;
}

3563 3564
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
3565 3566 3567 3568 3569 3570 3571
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
3572
		ath10k_dbg(ar, ATH10K_DBG_MAC,
3573
			   "mac config channel %dMHz flags 0x%x radar %d\n",
3574
			   conf->chandef.chan->center_freq,
3575 3576
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
3577

3578 3579 3580
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
3581

3582 3583
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
3584 3585 3586 3587 3588

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
3589 3590
	}

3591 3592
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
3593 3594

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
3595 3596 3597 3598
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
3599 3600 3601 3602 3603 3604
	}

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

3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615
static u32 get_nss_from_chainmask(u16 chain_mask)
{
	if ((chain_mask & 0x15) == 0x15)
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629
/*
 * 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;
3630
	u32 value;
3631
	int bit;
3632
	u32 vdev_param;
3633

3634 3635
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

3636 3637
	mutex_lock(&ar->conf_mutex);

3638 3639
	memset(arvif, 0, sizeof(*arvif));

3640 3641 3642
	arvif->ar = ar;
	arvif->vif = vif;

3643
	INIT_LIST_HEAD(&arvif->list);
3644
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
3645 3646
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
3647

B
Ben Greear 已提交
3648
	if (ar->free_vdev_map == 0) {
3649
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
3650
		ret = -EBUSY;
3651
		goto err;
3652
	}
B
Ben Greear 已提交
3653
	bit = __ffs64(ar->free_vdev_map);
3654

B
Ben Greear 已提交
3655 3656
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
3657

B
Ben Greear 已提交
3658
	arvif->vdev_id = bit;
3659 3660 3661
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
M
Michal Kazior 已提交
3662 3663 3664 3665
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688
	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;
	}

3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709
	/* 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,
3710
							GFP_ATOMIC);
3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721
		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");
3722 3723 3724 3725

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
3726
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
3727
			    arvif->vdev_id, ret);
3728
		goto err;
3729 3730
	}

B
Ben Greear 已提交
3731
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
3732
	list_add(&arvif->list, &ar->arvifs);
3733

M
Michal Kazior 已提交
3734 3735 3736 3737
	/* It makes no sense to have firmware do keepalives. mac80211 already
	 * takes care of this with idle connection polling.
	 */
	ret = ath10k_mac_vif_disable_keepalive(arvif);
3738
	if (ret) {
M
Michal Kazior 已提交
3739
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
3740
			    arvif->vdev_id, ret);
3741 3742
		goto err_vdev_delete;
	}
3743

3744
	arvif->def_wep_key_idx = -1;
3745

3746 3747
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3748
					ATH10K_HW_TXRX_NATIVE_WIFI);
3749
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
3750
	if (ret && ret != -EOPNOTSUPP) {
3751
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
3752
			    arvif->vdev_id, ret);
3753 3754
		goto err_vdev_delete;
	}
3755

3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769
	if (ar->cfg_tx_chainmask) {
		u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

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

3770
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3771 3772
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
					 WMI_PEER_TYPE_DEFAULT);
3773
		if (ret) {
3774
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3775
				    arvif->vdev_id, ret);
3776
			goto err_vdev_delete;
3777
		}
3778

3779 3780
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
3781
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3782
				    arvif->vdev_id, ret);
3783 3784
			goto err_peer_delete;
		}
3785 3786 3787 3788 3789 3790 3791
	}

	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);
3792
		if (ret) {
3793
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3794
				    arvif->vdev_id, ret);
3795 3796
			goto err_peer_delete;
		}
3797

M
Michal Kazior 已提交
3798
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
3799
		if (ret) {
M
Michal Kazior 已提交
3800
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
3801
				    arvif->vdev_id, ret);
3802 3803
			goto err_peer_delete;
		}
3804

M
Michal Kazior 已提交
3805
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
3806
		if (ret) {
M
Michal Kazior 已提交
3807
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
3808
				    arvif->vdev_id, ret);
3809 3810
			goto err_peer_delete;
		}
3811 3812
	}

3813
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3814
	if (ret) {
3815
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3816
			    arvif->vdev_id, ret);
3817 3818
		goto err_peer_delete;
	}
3819

3820
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3821
	if (ret) {
3822
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3823
			    arvif->vdev_id, ret);
3824 3825
		goto err_peer_delete;
	}
3826

3827 3828 3829 3830 3831 3832 3833
	arvif->txpower = vif->bss_conf.txpower;
	ret = ath10k_mac_txpower_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
		goto err_peer_delete;
	}

3834
	mutex_unlock(&ar->conf_mutex);
3835 3836 3837 3838 3839 3840 3841 3842
	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
3843
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3844
	list_del(&arvif->list);
3845 3846

err:
3847 3848 3849 3850 3851 3852
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

3853 3854
	mutex_unlock(&ar->conf_mutex);

3855 3856 3857 3858 3859 3860 3861 3862 3863 3864
	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;

3865
	cancel_work_sync(&arvif->ap_csa_work);
3866
	cancel_delayed_work_sync(&arvif->connection_loss_work);
3867

3868 3869
	mutex_lock(&ar->conf_mutex);

3870
	spin_lock_bh(&ar->data_lock);
3871
	ath10k_mac_vif_beacon_cleanup(arvif);
3872 3873
	spin_unlock_bh(&ar->data_lock);

3874 3875
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
3876
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3877 3878
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
3879
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3880
	list_del(&arvif->list);
3881 3882

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3883 3884
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
3885
		if (ret)
3886
			ath10k_warn(ar, "failed to submit AP self-peer removal on vdev %i: %d\n",
3887
				    arvif->vdev_id, ret);
3888 3889 3890 3891

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

3892
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3893 3894
		   arvif->vdev_id);

3895 3896
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3897
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3898
			    arvif->vdev_id, ret);
3899

3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_wait_for_peer_deleted(ar, arvif->vdev_id,
						   vif->addr);
		if (ret)
			ath10k_warn(ar, "failed to remove AP self-peer on vdev %i: %d\n",
				    arvif->vdev_id, ret);

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

3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946
	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;

3947 3948 3949
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961

	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;
3962
	u32 vdev_param, pdev_param, slottime, preamble;
3963 3964 3965 3966 3967 3968 3969 3970

	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;
3971 3972
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3973
						arvif->beacon_interval);
3974
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3975 3976 3977
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

3978
		if (ret)
3979
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
3980
				    arvif->vdev_id, ret);
3981 3982 3983
	}

	if (changed & BSS_CHANGED_BEACON) {
3984
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3985 3986 3987
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

3988 3989
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
3990 3991
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
3992
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
3993
				    arvif->vdev_id, ret);
3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005

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

	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
				    arvif->vdev_id, ret);
4006 4007
	}

4008
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
4009 4010
		arvif->dtim_period = info->dtim_period;

4011
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4012 4013 4014
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

4015 4016
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4017 4018
						arvif->dtim_period);
		if (ret)
4019
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
4020
				    arvif->vdev_id, ret);
4021 4022 4023 4024 4025 4026 4027 4028 4029 4030
	}

	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;
	}

4031 4032
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
4033 4034 4035 4036 4037

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
4038
		arvif->use_cts_prot = info->use_cts_prot;
4039
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
4040
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
4041

4042
		ret = ath10k_recalc_rtscts_prot(arvif);
4043
		if (ret)
4044
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
4045
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
4046 4047 4048 4049 4050 4051 4052

		vdev_param = ar->wmi.vdev_param->protection_mode;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						info->use_cts_prot ? 1 : 0);
		if (ret)
			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
					info->use_cts_prot, arvif->vdev_id, ret);
4053 4054 4055 4056 4057 4058 4059 4060 4061
	}

	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 */

4062
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
4063 4064
			   arvif->vdev_id, slottime);

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

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

4079
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4080 4081 4082
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

4083 4084
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4085 4086
						preamble);
		if (ret)
4087
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
4088
				    arvif->vdev_id, ret);
4089 4090 4091
	}

	if (changed & BSS_CHANGED_ASSOC) {
4092 4093 4094 4095 4096 4097 4098
		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);
4099
			ath10k_bss_assoc(hw, vif, info);
4100
			ath10k_monitor_recalc(ar);
4101 4102
		} else {
			ath10k_bss_disassoc(hw, vif);
4103
		}
4104 4105
	}

4106 4107 4108 4109 4110 4111 4112 4113 4114 4115
	if (changed & BSS_CHANGED_TXPOWER) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n",
			   arvif->vdev_id, info->txpower);

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

4116
	if (changed & BSS_CHANGED_PS) {
4117 4118 4119
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
4120 4121 4122 4123 4124
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

4125 4126 4127 4128 4129
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
4130
			  struct ieee80211_scan_request *hw_req)
4131 4132 4133
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4134
	struct cfg80211_scan_request *req = &hw_req->req;
4135 4136 4137 4138 4139 4140 4141
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153
	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:
4154
		ret = -EBUSY;
4155
		break;
4156 4157 4158
	}
	spin_unlock_bh(&ar->data_lock);

4159 4160 4161
	if (ret)
		goto exit;

4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180
	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;
		}
4181 4182
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
4183 4184 4185 4186 4187 4188 4189 4190 4191 4192
	}

	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) {
4193
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
4194
		spin_lock_bh(&ar->data_lock);
4195
		ar->scan.state = ATH10K_SCAN_IDLE;
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209
		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);
4210
	ath10k_scan_abort(ar);
4211
	mutex_unlock(&ar->conf_mutex);
4212 4213

	cancel_delayed_work_sync(&ar->scan.timeout);
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 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249
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)
4250
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
4251
			    arvif->vdev_id, ret);
4252 4253
}

4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264
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;
4265
	u32 flags = 0;
4266

4267 4268 4269 4270
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;

4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292
	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) {
4293
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
4294 4295 4296 4297 4298 4299 4300 4301 4302 4303
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

M
Michal Kazior 已提交
4304 4305 4306 4307 4308
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;

4309 4310 4311 4312 4313 4314 4315 4316
	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);
4317

4318 4319 4320 4321 4322 4323 4324 4325
		/* When WEP keys are uploaded it's possible that there are
		 * stations associated already (e.g. when merging) without any
		 * keys. Static WEP needs an explicit per-peer key upload.
		 */
		if (vif->type == NL80211_IFTYPE_ADHOC &&
		    cmd == SET_KEY)
			ath10k_mac_vif_update_wep_key(arvif, key);

4326 4327 4328 4329 4330 4331 4332 4333
		/* 802.1x never sets the def_wep_key_idx so each set_key()
		 * call changes default tx key.
		 *
		 * Static WEP sets def_wep_key_idx via .set_default_unicast_key
		 * after first set_key().
		 */
		if (cmd == SET_KEY && arvif->def_wep_key_idx == -1)
			flags |= WMI_KEY_TX_USAGE;
4334

M
Michal Kazior 已提交
4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351
		/* mac80211 uploads static WEP keys as groupwise while fw/hw
		 * requires pairwise keys for non-self peers, i.e. BSSID in STA
		 * mode and associated stations in AP/IBSS.
		 *
		 * Static WEP keys for peer_addr=vif->addr and 802.1X WEP keys
		 * work fine when mapped directly from mac80211.
		 *
		 * Note: When installing first static WEP groupwise key (which
		 * should be pairwise) def_wep_key_idx isn't known yet (it's
		 * equal to -1).  Since .set_default_unicast_key is called only
		 * for static WEP it's used to re-upload the key as pairwise.
		 */
		if (arvif->def_wep_key_idx >= 0 &&
		    memcmp(peer_addr, arvif->vif->addr, ETH_ALEN)) {
			flags &= ~WMI_KEY_GROUP;
			flags |= WMI_KEY_PAIRWISE;
		}
4352
	}
4353

4354
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
4355
	if (ret) {
4356
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
4357
			    arvif->vdev_id, peer_addr, ret);
4358 4359 4360
		goto exit;
	}

4361 4362
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

4363 4364 4365 4366 4367 4368 4369 4370
	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 */
4371
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
4372 4373 4374 4375 4376 4377 4378
	spin_unlock_bh(&ar->data_lock);

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

4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
					   int keyidx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

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

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

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

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

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

	arvif->def_wep_key_idx = keyidx;
4408 4409 4410 4411 4412 4413 4414 4415

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

4416 4417 4418 4419
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447
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) {
4448
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
4449 4450 4451 4452 4453
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
4454
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
4455 4456 4457 4458
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
4459
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
4460 4461 4462 4463 4464
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
4465
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
4466 4467 4468 4469
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
4470
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
4471 4472 4473 4474 4475
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
4476
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
4477 4478 4479
				    sta->addr, smps, err);
	}

4480 4481 4482
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
	    changed & IEEE80211_RC_NSS_CHANGED) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
4483 4484
			   sta->addr);

M
Michal Kazior 已提交
4485
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
4486
		if (err)
4487
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
4488 4489 4490
				    sta->addr);
	}

4491 4492 4493
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
4494 4495
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
4496 4497 4498 4499 4500
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4501
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4502 4503 4504 4505 4506 4507 4508 4509 4510 4511
		return 0;

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

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
4512 4513
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
4514 4515 4516 4517 4518
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4519
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4520 4521 4522 4523 4524
		return;

	ar->num_stations--;
}

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 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577
struct ath10k_mac_tdls_iter_data {
	u32 num_tdls_stations;
	struct ieee80211_vif *curr_vif;
};

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

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

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

	data.curr_vif = vif;

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

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

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

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

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

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

4578 4579 4580 4581 4582 4583 4584 4585
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);
4586
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4587 4588
	int ret = 0;

4589 4590 4591 4592 4593 4594 4595
	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);
	}

4596 4597 4598 4599 4600
	/* 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);

4601 4602 4603
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
4604
	    new_state == IEEE80211_STA_NONE) {
4605 4606 4607
		/*
		 * New station addition.
		 */
4608 4609 4610 4611
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

4612 4613 4614 4615 4616
		ath10k_dbg(ar, ATH10K_DBG_MAC,
			   "mac vdev %d peer create %pM (new sta) sta %d / %d peer %d / %d\n",
			   arvif->vdev_id, sta->addr,
			   ar->num_stations + 1, ar->max_num_stations,
			   ar->num_peers + 1, ar->max_num_peers);
4617

M
Marek Puzyniak 已提交
4618
		ret = ath10k_mac_inc_num_stations(arvif, sta);
4619 4620 4621
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
4622 4623 4624
			goto exit;
		}

4625 4626 4627
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

4628
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
4629
					 peer_type);
M
Michal Kazior 已提交
4630
		if (ret) {
4631
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
4632
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
4633
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
4634 4635
			goto exit;
		}
4636

4637 4638
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4639 4640 4641 4642 4643 4644 4645 4646
			WARN_ON(arvif->is_started);

			ret = ath10k_vdev_start(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to start vdev %i: %d\n",
					    arvif->vdev_id, ret);
				WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
							   sta->addr));
M
Marek Puzyniak 已提交
4647
				ath10k_mac_dec_num_stations(arvif, sta);
4648 4649 4650 4651 4652
				goto exit;
			}

			arvif->is_started = true;
		}
4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699

		if (!sta->tdls)
			goto exit;

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

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

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

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

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

			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
		}
4700 4701 4702 4703 4704
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
4705
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4706 4707
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
4708

4709 4710
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4711 4712 4713 4714 4715 4716 4717 4718 4719 4720
			WARN_ON(!arvif->is_started);

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

			arvif->is_started = false;
		}

4721 4722
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
4723
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
4724
				    sta->addr, arvif->vdev_id, ret);
4725

M
Marek Puzyniak 已提交
4726
		ath10k_mac_dec_num_stations(arvif, sta);
4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740

		if (!sta->tdls)
			goto exit;

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

		/* This was the last tdls peer in current vif */
		ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
						      WMI_TDLS_DISABLE);
		if (ret) {
			ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
				    arvif->vdev_id, ret);
		}
4741 4742 4743 4744 4745 4746 4747
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
4748
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
4749 4750
			   sta->addr);

M
Michal Kazior 已提交
4751
		ret = ath10k_station_assoc(ar, vif, sta, false);
4752
		if (ret)
4753
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
4754
				    sta->addr, arvif->vdev_id, ret);
4755
	} else if (old_state == IEEE80211_STA_ASSOC &&
4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

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

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
		     vif->type == NL80211_IFTYPE_ADHOC)) {
4780 4781 4782
		/*
		 * Disassociation.
		 */
4783
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
4784 4785
			   sta->addr);

M
Michal Kazior 已提交
4786
		ret = ath10k_station_disassoc(ar, vif, sta);
4787
		if (ret)
4788
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
4789
				    sta->addr, arvif->vdev_id, ret);
4790
	}
4791
exit:
4792 4793 4794 4795 4796
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
4797
				u16 ac, bool enable)
4798 4799
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4800 4801
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
4802 4803 4804
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
4805 4806
	lockdep_assert_held(&ar->conf_mutex);

4807 4808 4809 4810 4811 4812 4813
	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;
4814 4815
		prio = 7;
		acc = 3;
4816 4817 4818 4819
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
4820 4821
		prio = 5;
		acc = 2;
4822 4823 4824 4825
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
4826 4827
		prio = 2;
		acc = 1;
4828 4829 4830 4831
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
4832 4833
		prio = 0;
		acc = 0;
4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845
		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) {
4846
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858
		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)
4859
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
4860

M
Michal Kazior 已提交
4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874
	ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

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

4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897
	if (test_bit(WMI_SERVICE_STA_UAPSD_BASIC_AUTO_TRIG, ar->wmi.svc_map) ||
	    test_bit(WMI_SERVICE_STA_UAPSD_VAR_AUTO_TRIG, ar->wmi.svc_map)) {
		/* Only userspace can make an educated decision when to send
		 * trigger frame. The following effectively disables u-UAPSD
		 * autotrigger in firmware (which is enabled by default
		 * provided the autotrigger service is available).
		 */

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

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

4898 4899 4900 4901 4902 4903 4904 4905 4906
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;
4907
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4908 4909 4910 4911 4912 4913 4914
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
4915
		p = &arvif->wmm_params.ac_vo;
4916 4917
		break;
	case IEEE80211_AC_VI:
4918
		p = &arvif->wmm_params.ac_vi;
4919 4920
		break;
	case IEEE80211_AC_BE:
4921
		p = &arvif->wmm_params.ac_be;
4922 4923
		break;
	case IEEE80211_AC_BK:
4924
		p = &arvif->wmm_params.ac_bk;
4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943
		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;

4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960
	if (ar->wmi.ops->gen_vdev_wmm_conf) {
		ret = ath10k_wmi_vdev_wmm_conf(ar, arvif->vdev_id,
					       &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set vdev wmm params on vdev %i: %d\n",
				    arvif->vdev_id, ret);
			goto exit;
		}
	} else {
		/* This won't work well with multi-interface cases but it's
		 * better than nothing.
		 */
		ret = ath10k_wmi_pdev_set_wmm_params(ar, &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
			goto exit;
		}
4961 4962 4963 4964
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
4965
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982

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;
4983
	int ret = 0;
4984 4985 4986 4987

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001
	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:
5002
		ret = -EBUSY;
5003
		break;
5004 5005 5006
	}
	spin_unlock_bh(&ar->data_lock);

5007 5008 5009
	if (ret)
		goto exit;

M
Michal Kazior 已提交
5010 5011
	duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);

5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025
	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) {
5026
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
5027
		spin_lock_bh(&ar->data_lock);
5028
		ar->scan.state = ATH10K_SCAN_IDLE;
5029 5030 5031 5032 5033 5034
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
5035
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
5036 5037 5038

		ret = ath10k_scan_stop(ar);
		if (ret)
5039
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
5040

5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055
		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);
5056
	ath10k_scan_abort(ar);
5057 5058
	mutex_unlock(&ar->conf_mutex);

5059 5060
	cancel_delayed_work_sync(&ar->scan.timeout);

5061 5062 5063 5064 5065 5066 5067 5068
	return 0;
}

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

5069 5070 5071 5072 5073
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
5074

5075
	mutex_lock(&ar->conf_mutex);
5076
	list_for_each_entry(arvif, &ar->arvifs, list) {
5077
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
5078 5079 5080 5081
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
5082
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5083 5084 5085 5086
				    arvif->vdev_id, ret);
			break;
		}
	}
5087 5088
	mutex_unlock(&ar->conf_mutex);

5089
	return ret;
5090 5091
}

5092 5093
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
5094 5095
{
	struct ath10k *ar = hw->priv;
5096
	bool skip;
5097 5098 5099 5100 5101 5102 5103
	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
5104 5105
	mutex_lock(&ar->conf_mutex);

5106 5107 5108
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

5109
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
5110
			bool empty;
5111

5112
			spin_lock_bh(&ar->htt.tx_lock);
5113
			empty = (ar->htt.num_pending_tx == 0);
5114
			spin_unlock_bh(&ar->htt.tx_lock);
5115

M
Michal Kazior 已提交
5116 5117 5118
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
5119 5120

			(empty || skip);
5121
		}), ATH10K_FLUSH_TIMEOUT_HZ);
5122 5123

	if (ret <= 0 || skip)
5124
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
5125
			    skip, ar->state, ret);
M
Michal Kazior 已提交
5126

5127
skip:
M
Michal Kazior 已提交
5128
	mutex_unlock(&ar->conf_mutex);
5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139
}

/* 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;
}

5140 5141
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
5142 5143 5144
{
	struct ath10k *ar = hw->priv;

5145 5146 5147
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

5148 5149 5150 5151 5152
	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) {
5153
		ath10k_info(ar, "device successfully recovered\n");
5154
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
5155
		ieee80211_wake_queues(ar->hw);
5156 5157 5158 5159 5160
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190
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];

5191 5192 5193
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
5194 5195 5196 5197 5198
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

5199 5200
/* Helper table for legacy fixed_rate/bitrate_mask */
static const u8 cck_ofdm_rate[] = {
5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212
	ATH10K_HW_RATE_CCK_LP_1M,
	ATH10K_HW_RATE_CCK_LP_2M,
	ATH10K_HW_RATE_CCK_LP_5_5M,
	ATH10K_HW_RATE_CCK_LP_11M,
	ATH10K_HW_RATE_OFDM_6M,
	ATH10K_HW_RATE_OFDM_9M,
	ATH10K_HW_RATE_OFDM_12M,
	ATH10K_HW_RATE_OFDM_18M,
	ATH10K_HW_RATE_OFDM_24M,
	ATH10K_HW_RATE_OFDM_36M,
	ATH10K_HW_RATE_OFDM_48M,
	ATH10K_HW_RATE_OFDM_54M,
5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238
};

/* 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;
5239 5240 5241 5242
	u16 nrf = ar->num_rf_chains;

	if (ar->cfg_tx_chainmask)
		nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257

	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;

5258
	for (i = 0; i < nrf; i++)
5259 5260 5261
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

5262
	for (i = 0; i < nrf; i++)
5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285
		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;
5286 5287

		return false;
5288 5289 5290 5291 5292 5293 5294 5295 5296 5297
	}

	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;
5298 5299

		return false;
5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355
	}

	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
5356 5357
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414
			 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;

5415
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
5416 5417 5418 5419 5420 5421 5422
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

5423 5424
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
5425 5426 5427 5428 5429 5430 5431 5432 5433
				      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 */
5434
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
5435 5436 5437 5438
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
5439 5440
				       u8 fixed_nss,
				       u8 force_sgi)
5441 5442 5443 5444 5445 5446 5447 5448
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
5449 5450
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
5451 5452 5453
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
5454
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
5455

5456
	if (force_sgi)
5457
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
5458

5459 5460 5461 5462
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
5463
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475
			    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) {
5476
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
5477 5478 5479 5480 5481 5482 5483
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

5484 5485 5486 5487 5488
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
5489
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
5490 5491 5492 5493 5494 5495 5496
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510
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;
5511 5512
	u8 force_sgi;

5513 5514 5515
	if (ar->cfg_tx_chainmask)
		fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

5516 5517 5518
	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
5519 5520

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
5521
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
5522 5523 5524 5525 5526
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

5527
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
5528
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
5529 5530 5531 5532 5533
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
5534 5535
}

5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546
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);

5547
	ath10k_dbg(ar, ATH10K_DBG_MAC,
5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565
		   "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:
5566
			ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
5567
				    sta->bandwidth, sta->addr);
5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592
			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:
5593
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
5594
				    sta->smps_mode, sta->addr);
5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608
			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);
}

5609 5610 5611 5612 5613 5614 5615 5616 5617 5618
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;
}

5619 5620 5621 5622 5623 5624
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)
{
5625
	struct ath10k *ar = hw->priv;
5626 5627
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

5628
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651
		   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;
}

5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663
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,
5664
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
5665 5666 5667 5668 5669 5670 5671
	.sta_state			= ath10k_sta_state,
	.conf_tx			= ath10k_conf_tx,
	.remain_on_channel		= ath10k_remain_on_channel,
	.cancel_remain_on_channel	= ath10k_cancel_remain_on_channel,
	.set_rts_threshold		= ath10k_set_rts_threshold,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
5672 5673
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
5674
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
5675
	.get_survey			= ath10k_get_survey,
5676
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
5677
	.sta_rc_update			= ath10k_sta_rc_update,
5678
	.get_tsf			= ath10k_get_tsf,
5679
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
5680 5681 5682
	.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
5683 5684 5685

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
5686
#ifdef CONFIG_PM
5687 5688
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
5689
#endif
5690 5691 5692
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730
};

#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[] = {
5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749
	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),
5750
	CHAN5G(144, 5720, 0),
5751 5752 5753 5754 5755
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
5756 5757
};

M
Michal Kazior 已提交
5758
struct ath10k *ath10k_mac_create(size_t priv_size)
5759 5760 5761 5762
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
5763
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782
	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)
5783 5784 5785 5786 5787 5788
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
M
Michal Kazior 已提交
5789 5790 5791 5792
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
5793 5794 5795
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
5796 5797
};

5798
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812
	{
	.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,
	},
5813 5814 5815
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
5816
	{
5817 5818
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
5819 5820 5821
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
5822
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
5823 5824 5825 5826 5827
		.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
5828
	},
5829 5830 5831 5832 5833 5834
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
5835
	u32 val;
5836
	int i;
5837 5838 5839 5840

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

5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

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

		vht_cap.cap |= val;
	}

5859 5860 5861 5862 5863 5864 5865
	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);
	}
5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927

	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;

5928
	for (i = 0; i < ar->num_rf_chains; i++)
5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959
		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) {
5960
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
5961 5962 5963 5964 5965 5966 5967 5968
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
5969 5970 5971 5972 5973 5974 5975
	static const u32 cipher_suites[] = {
		WLAN_CIPHER_SUITE_WEP40,
		WLAN_CIPHER_SUITE_WEP104,
		WLAN_CIPHER_SUITE_TKIP,
		WLAN_CIPHER_SUITE_CCMP,
		WLAN_CIPHER_SUITE_AES_CMAC,
	};
5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992
	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
5993 5994 5995 5996
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
5997 5998 5999 6000 6001 6002 6003 6004

		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;

6005 6006
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
6007 6008 6009 6010 6011 6012 6013 6014 6015

		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
6016 6017
			ret = -ENOMEM;
			goto err_free;
6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031
		}

		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) |
6032 6033
		BIT(NL80211_IFTYPE_AP);

6034 6035 6036
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

6037 6038
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
6039
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
6040 6041
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
6042 6043 6044 6045 6046 6047 6048

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
6049
			IEEE80211_HW_AP_LINK_PS |
6050
			IEEE80211_HW_SPECTRUM_MGMT |
6051 6052
			IEEE80211_HW_SW_CRYPTO_CONTROL |
			IEEE80211_HW_CONNECTION_MONITOR;
6053

6054 6055
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;

6056
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
6057
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
6058 6059 6060 6061 6062 6063 6064 6065 6066 6067

	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);
6068
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
6069 6070 6071

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084
	if (test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) {
		ar->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;

		/* Firmware delivers WPS/P2P Probe Requests frames to driver so
		 * that userspace (e.g. wpa_supplicant/hostapd) can generate
		 * correct Probe Responses. This is more of a hack advert..
		 */
		ar->hw->wiphy->probe_resp_offload |=
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
	}

6085 6086 6087
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

6088
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
6089
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
6090 6091 6092
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
6093 6094
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

6095 6096
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

6097 6098 6099 6100 6101 6102
	ret = ath10k_wow_init(ar);
	if (ret) {
		ath10k_warn(ar, "failed to init wow: %d\n", ret);
		goto err_free;
	}

6103 6104 6105 6106 6107 6108
	/*
	 * 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;

6109 6110 6111
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
	case ATH10K_FW_WMI_OP_VERSION_TLV:
6112 6113 6114
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
6115
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
6116 6117 6118
		break;
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
6119
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
6120 6121 6122 6123 6124 6125 6126 6127 6128
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
6129
	}
6130

6131 6132
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
6133 6134 6135 6136 6137 6138 6139
	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)
6140
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
6141 6142
	}

6143 6144 6145
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
6146
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
6147
		goto err_free;
6148 6149
	}

6150 6151 6152
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

6153 6154
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
6155
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
6156
		goto err_free;
6157 6158 6159 6160 6161 6162
	}

	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
6163
			goto err_unregister;
6164 6165 6166
	}

	return 0;
M
Michal Kazior 已提交
6167 6168

err_unregister:
6169
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
6170 6171 6172 6173
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

6174 6175 6176 6177 6178 6179 6180
	return ret;
}

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

J
Janusz Dziedzic 已提交
6181 6182 6183
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

6184 6185 6186 6187 6188
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}