mac.c 116.7 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"

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

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

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

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	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		arg.key_flags = WMI_KEY_PAIRWISE;
	else
		arg.key_flags = WMI_KEY_GROUP;

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
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		if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
		else
			key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
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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;
		/* AP/IBSS mode requires self-key to be groupwise
		 * Otherwise pairwise key must be set */
		if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN))
			arg.key_flags = WMI_KEY_PAIRWISE;
		break;
	default:
		ath10k_warn("cipher %d is not supported\n", key->cipher);
		return -EOPNOTSUPP;
	}

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

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

static int ath10k_install_key(struct ath10k_vif *arvif,
			      struct ieee80211_key_conf *key,
			      enum set_key_cmd cmd,
			      const u8 *macaddr)
{
	struct ath10k *ar = arvif->ar;
	int ret;

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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);
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
					const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

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

	if (!peer)
		return -ENOENT;

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

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

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

	return 0;
}

static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
				  const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int first_errno = 0;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

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

	if (!peer)
		return -ENOENT;

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

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

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

		peer->keys[i] = NULL;
	}

	return first_errno;
}

static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
				 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	u8 addr[ETH_ALEN];
	int first_errno = 0;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

	for (;;) {
		/* since ath10k_install_key we can't hold data_lock all the
		 * time, so we try to remove the keys incrementally */
		spin_lock_bh(&ar->data_lock);
		i = 0;
		list_for_each_entry(peer, &ar->peers, list) {
			for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
				if (peer->keys[i] == key) {
					memcpy(addr, peer->addr, ETH_ALEN);
					peer->keys[i] = NULL;
					break;
				}
			}

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

		if (i == ARRAY_SIZE(peer->keys))
			break;

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

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

	return first_errno;
}


/*********************/
/* General utilities */
/*********************/

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

	switch (chandef->chan->band) {
	case IEEE80211_BAND_2GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
			phymode = MODE_11G;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
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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;
	}
}

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

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_create(ar, vdev_id, addr);
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	if (ret) {
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		ath10k_warn("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("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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	spin_lock_bh(&ar->data_lock);
	ar->num_peers++;
	spin_unlock_bh(&ar->data_lock);
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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("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("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("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("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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	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

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

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

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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;

		ath10k_warn("removing stale peer %pM from vdev_id %d\n",
			    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);
	}
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	ar->num_peers = 0;
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	spin_unlock_bh(&ar->data_lock);
}

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/************************/
/* Interface management */
/************************/

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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	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 bool ath10k_monitor_is_enabled(struct ath10k *ar)
{
	lockdep_assert_held(&ar->conf_mutex);

	ath10k_dbg(ATH10K_DBG_MAC,
		   "mac monitor refs: promisc %d monitor %d cac %d\n",
		   ar->promisc, ar->monitor,
		   test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags));

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

static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
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{
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	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
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	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;
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	arg.channel.band_center_freq1 = chandef->center_freq1;
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	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
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	arg.channel.mode = chan_to_phymode(chandef);
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	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
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	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;
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	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
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		ath10k_warn("failed to request monitor vdev %i start: %d\n",
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			    vdev_id, ret);
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		return ret;
	}

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

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

	ar->monitor_vdev_id = vdev_id;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
		   ar->monitor_vdev_id);
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	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn("failed to stop monitor vdev %i after start failure: %d\n",
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			    ar->monitor_vdev_id, ret);
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	return ret;
}

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static int ath10k_monitor_vdev_stop(struct ath10k *ar)
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{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn("failed to put down monitor vdev %i: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn("failed to to request monitor vdev %i stop: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
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		ath10k_warn("failed to synchronise monitor vdev %i: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
		   ar->monitor_vdev_id);
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	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
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{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
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		ath10k_warn("failed to find free vdev id for monitor vdev\n");
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		return -ENOMEM;
	}

	ar->monitor_vdev_id = bit - 1;
	ar->free_vdev_map &= ~(1 << ar->monitor_vdev_id);

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
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		ath10k_warn("failed to request monitor vdev %i creation: %d\n",
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			    ar->monitor_vdev_id, ret);
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		goto vdev_fail;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
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		   ar->monitor_vdev_id);

	return 0;

vdev_fail:
	/*
	 * Restore the ID to the global map.
	 */
	ar->free_vdev_map |= 1 << (ar->monitor_vdev_id);
	return ret;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
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{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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

	ar->free_vdev_map |= 1 << (ar->monitor_vdev_id);

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

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static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	if (!ath10k_monitor_is_enabled(ar)) {
		ath10k_warn("trying to start monitor with no references\n");
		return 0;
	}

	if (ar->monitor_started) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor already started\n");
		return 0;
	}

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

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

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

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

	if (ath10k_monitor_is_enabled(ar)) {
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac monitor will be stopped later\n");
		return;
	}

	if (!ar->monitor_started) {
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac monitor probably failed to start earlier\n");
		return;
	}

	ret = ath10k_monitor_vdev_stop(ar);
	if (ret)
		ath10k_warn("failed to stop monitor vdev: %d\n", ret);

	ret = ath10k_monitor_vdev_delete(ar);
	if (ret)
		ath10k_warn("failed to delete monitor vdev: %d\n", ret);

	ar->monitor_started = false;
	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor stopped\n");
}

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static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param, rts_cts = 0;

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

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static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

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	ret = ath10k_monitor_start(ar);
745
	if (ret) {
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		ath10k_warn("failed to start monitor (cac): %d\n", ret);
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		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

	ath10k_dbg(ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
		   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);
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	ath10k_dbg(ATH10K_DBG_MAC, "mac cac finished\n");

	return 0;
}

773
static void ath10k_recalc_radar_detection(struct ath10k *ar)
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{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

781
	if (!ar->radar_enabled)
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		return;

784
	if (ar->num_started_vdevs > 0)
785 786 787 788 789 790 791 792 793
		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.
		 */
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		ath10k_warn("failed to start CAC: %d\n", ret);
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		ieee80211_radar_detected(ar->hw);
	}
}

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static int ath10k_vdev_start(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

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

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

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

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

	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
		ath10k_warn("failed to start WMI vdev %i: %d\n",
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn("failed to synchronise setup for vdev %i: %d\n",
			    arg.vdev_id, ret);
		return ret;
	}

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	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

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	return ret;
}

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("failed to stop WMI vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

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

884 885 886 887 888 889 890
	WARN_ON(ar->num_started_vdevs == 0);

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

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	return ret;
}

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static void ath10k_control_beaconing(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info)
{
	int ret = 0;

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

901 902
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
903 904 905 906

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

907 908
		spin_lock_bh(&arvif->ar->data_lock);
		if (arvif->beacon) {
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			dma_unmap_single(arvif->ar->dev,
					 ATH10K_SKB_CB(arvif->beacon)->paddr,
					 arvif->beacon->len, DMA_TO_DEVICE);
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			dev_kfree_skb_any(arvif->beacon);

			arvif->beacon = NULL;
			arvif->beacon_sent = false;
		}
		spin_unlock_bh(&arvif->ar->data_lock);

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		return;
	}

	arvif->tx_seq_no = 0x1000;

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

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	arvif->aid = 0;
	memcpy(arvif->bssid, info->bssid, ETH_ALEN);

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
933
	if (ret) {
934
		ath10k_warn("failed to bring up vdev %d: %i\n",
935
			    arvif->vdev_id, ret);
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		ath10k_vdev_stop(arvif);
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		return;
	}
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	arvif->is_started = true;
	arvif->is_up = true;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
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}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
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	u32 vdev_param;
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	int ret = 0;

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

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	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
958
			ath10k_warn("failed to delete IBSS self peer %pM for vdev %d: %d\n",
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				    self_peer, arvif->vdev_id, ret);

961
		if (is_zero_ether_addr(arvif->bssid))
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			return;

		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id,
965
					 arvif->bssid);
966
		if (ret) {
967
			ath10k_warn("failed to delete IBSS BSSID peer %pM for vdev %d: %d\n",
968
				    arvif->bssid, arvif->vdev_id, ret);
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			return;
		}

972
		memset(arvif->bssid, 0, ETH_ALEN);
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		return;
	}

	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
	if (ret) {
979
		ath10k_warn("failed to create IBSS self peer %pM for vdev %d: %d\n",
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			    self_peer, arvif->vdev_id, ret);
		return;
	}

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	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
986 987
					ATH10K_DEFAULT_ATIM);
	if (ret)
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		ath10k_warn("failed to set IBSS ATIM for vdev %d: %d\n",
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			    arvif->vdev_id, ret);
}

/*
 * Review this when mac80211 gains per-interface powersave support.
 */
995
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
996
{
997 998
	struct ath10k *ar = arvif->ar;
	struct ieee80211_conf *conf = &ar->hw->conf;
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	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;

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

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	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
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	if (conf->flags & IEEE80211_CONF_PS) {
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1012
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1013 1014
						  conf->dynamic_ps_timeout);
		if (ret) {
1015
			ath10k_warn("failed to set inactivity time for vdev %d: %i\n",
1016
				    arvif->vdev_id, ret);
1017
			return ret;
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		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

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

1026 1027
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1028 1029
		ath10k_warn("failed to set PS Mode %d for vdev %d: %d\n",
			    psmode, arvif->vdev_id, ret);
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		return ret;
	}

	return 0;
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}

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

static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
				      struct ath10k_vif *arvif,
				      struct ieee80211_sta *sta,
				      struct ieee80211_bss_conf *bss_conf,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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	lockdep_assert_held(&ar->conf_mutex);

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	memcpy(arg->addr, sta->addr, ETH_ALEN);
	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;

	if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
		/*
		 * Seems FW have problems with Power Save in STA
		 * mode when we setup this parameter to high (eg. 5).
		 * Often we see that FW don't send NULL (with clean P flags)
		 * frame even there is info about buffered frames in beacons.
		 * Sometimes we have to wait more than 10 seconds before FW
		 * will wakeup. Often sending one ping from AP to our device
		 * just fail (more than 50%).
		 *
		 * Seems setting this FW parameter to 1 couse FW
		 * will check every beacon and will wakup immediately
		 * after detection buffered data.
		 */
		arg->peer_listen_intval = 1;
	else
		arg->peer_listen_intval = ar->hw->conf.listen_interval;

	arg->peer_num_spatial_streams = 1;

	/*
	 * The assoc capabilities are available only in managed mode.
	 */
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && bss_conf)
		arg->peer_caps = bss_conf->assoc_capability;
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
				       struct ath10k_vif *arvif,
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_vif *vif = arvif->vif;
	struct ieee80211_bss_conf *info = &vif->bss_conf;
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

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	lockdep_assert_held(&ar->conf_mutex);

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	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
			       info->bssid, NULL, 0, 0, 0);
	if (bss) {
		const struct cfg80211_bss_ies *ies;

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

		ies = rcu_dereference(bss->ies);

		wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
				WLAN_OUI_TYPE_MICROSOFT_WPA,
				ies->data,
				ies->len);
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

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

	if (wpaie) {
		ath10k_dbg(ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
	u32 ratemask;
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

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	sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
	ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band];
	rates = sband->bitrates;

	rateset->num_rates = 0;

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

		rateset->rates[rateset->num_rates] = rates->hw_value;
		rateset->num_rates++;
	}
}

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

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	lockdep_assert_held(&ar->conf_mutex);

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	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) {
		u32 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;

1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224
	/*
	 * 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;
	}
1225

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1226 1227
	ath10k_dbg(ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
		   arg->addr,
1228 1229 1230 1231
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1232 1233 1234
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1235 1236 1237
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1238
	int ret = 0;
1239

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1240 1241
	lockdep_assert_held(&ar->conf_mutex);

1242
	if (sta->wme && sta->uapsd_queues) {
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1243
		ath10k_dbg(ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262
			   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;

1263 1264 1265 1266 1267
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1268 1269
			ath10k_warn("failed to set ap ps peer param uapsd for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1270 1271
			return ret;
		}
1272

1273 1274 1275 1276 1277
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1278 1279
			ath10k_warn("failed to set ap ps peer param max sp for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1280 1281
			return ret;
		}
1282 1283 1284 1285 1286

		/* 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 */
1287 1288 1289
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
					WMI_AP_PS_PEER_PARAM_AGEOUT_TIME, 10);
		if (ret) {
1290 1291
			ath10k_warn("failed to set ap ps peer param ageout time for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1292 1293
			return ret;
		}
1294 1295
	}

1296
	return 0;
1297 1298 1299 1300 1301 1302 1303
}

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;
1304
	u8 ampdu_factor;
1305 1306 1307 1308 1309 1310 1311

	if (!vht_cap->vht_supported)
		return;

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

1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324

	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);

1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336
	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);

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
1339 1340 1341 1342 1343 1344 1345 1346 1347 1348
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta,
				    struct ieee80211_bss_conf *bss_conf,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
1349 1350 1351 1352 1353 1354 1355
		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;
		}
1356 1357
		break;
	case WMI_VDEV_TYPE_STA:
1358 1359
		if (bss_conf->qos)
			arg->peer_flags |= WMI_PEER_QOS;
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
		break;
	default:
		break;
	}
}

static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
					struct ath10k_vif *arvif,
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (ar->hw->conf.chandef.chan->band) {
	case IEEE80211_BAND_2GHZ:
		if (sta->ht_cap.ht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
		} else {
			phymode = MODE_11G;
		}

		break;
	case IEEE80211_BAND_5GHZ:
1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
		/*
		 * 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) {
1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
		   sta->addr, ath10k_wmi_phymode_str(phymode));
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1413 1414 1415 1416
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

1417 1418 1419 1420 1421
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
				     struct ath10k_vif *arvif,
				     struct ieee80211_sta *sta,
				     struct ieee80211_bss_conf *bss_conf,
				     struct wmi_peer_assoc_complete_arg *arg)
1422
{
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	lockdep_assert_held(&ar->conf_mutex);

1425
	memset(arg, 0, sizeof(*arg));
1426

1427 1428 1429 1430 1431 1432 1433
	ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, arg);
	ath10k_peer_assoc_h_crypto(ar, arvif, arg);
	ath10k_peer_assoc_h_rates(ar, sta, arg);
	ath10k_peer_assoc_h_ht(ar, sta, arg);
	ath10k_peer_assoc_h_vht(ar, sta, arg);
	ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, arg);
	ath10k_peer_assoc_h_phymode(ar, arvif, sta, arg);
1434

1435
	return 0;
1436 1437
}

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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]);
}

1465 1466 1467 1468 1469 1470 1471
/* 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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	struct ieee80211_sta_ht_cap ht_cap;
1473
	struct wmi_peer_assoc_complete_arg peer_arg;
1474 1475 1476
	struct ieee80211_sta *ap_sta;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1479 1480 1481 1482
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
1483
		ath10k_warn("failed to find station entry for bss %pM vdev %i\n",
1484
			    bss_conf->bssid, arvif->vdev_id);
1485 1486 1487 1488
		rcu_read_unlock();
		return;
	}

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	/* 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;

1493 1494
	ret = ath10k_peer_assoc_prepare(ar, arvif, ap_sta,
					bss_conf, &peer_arg);
1495
	if (ret) {
1496
		ath10k_warn("failed to prepare peer assoc for %pM vdev %i: %d\n",
1497
			    bss_conf->bssid, arvif->vdev_id, ret);
1498 1499 1500 1501 1502 1503
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

1504 1505
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
1506
		ath10k_warn("failed to run peer assoc for %pM vdev %i: %d\n",
1507
			    bss_conf->bssid, arvif->vdev_id, ret);
1508 1509 1510
		return;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
1513 1514
		ath10k_warn("failed to setup peer SMPS for vdev %i: %d\n",
			    arvif->vdev_id, ret);
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		return;
	}

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

1522 1523 1524 1525 1526
	arvif->aid = bss_conf->aid;
	memcpy(arvif->bssid, bss_conf->bssid, ETH_ALEN);

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
1527
		ath10k_warn("failed to set vdev %d up: %d\n",
1528
			    arvif->vdev_id, ret);
1529 1530 1531 1532
		return;
	}

	arvif->is_up = true;
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
}

/*
 * FIXME: flush TIDs
 */
static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1547 1548 1549 1550 1551 1552
	/*
	 * For some reason, calling VDEV-DOWN before VDEV-STOP
	 * makes the FW to send frames via HTT after disassociation.
	 * No idea why this happens, even though VDEV-DOWN is supposed
	 * to be analogous to link down, so just stop the VDEV.
	 */
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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d stop (disassociated\n",
		   arvif->vdev_id);

	/* FIXME: check return value */
1557 1558 1559 1560 1561 1562 1563 1564 1565
	ret = ath10k_vdev_stop(arvif);

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

	/* FIXME: why don't we print error if wmi call fails? */
1569 1570
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);

1571
	arvif->def_wep_key_idx = 0;
1572 1573 1574

	arvif->is_started = false;
	arvif->is_up = false;
1575 1576 1577
}

static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif,
1578
				struct ieee80211_sta *sta, bool reassoc)
1579
{
1580
	struct wmi_peer_assoc_complete_arg peer_arg;
1581 1582
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

1585 1586
	ret = ath10k_peer_assoc_prepare(ar, arvif, sta, NULL, &peer_arg);
	if (ret) {
1587
		ath10k_warn("failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
1588
			    sta->addr, arvif->vdev_id, ret);
1589 1590 1591
		return ret;
	}

1592
	peer_arg.peer_reassoc = reassoc;
1593
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1594
	if (ret) {
1595
		ath10k_warn("failed to run peer assoc for STA %pM vdev %i: %d\n",
1596
			    sta->addr, arvif->vdev_id, ret);
1597 1598 1599
		return ret;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, sta->addr, &sta->ht_cap);
	if (ret) {
1602 1603
		ath10k_warn("failed to setup peer SMPS for vdev %d: %d\n",
			    arvif->vdev_id, ret);
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		return ret;
	}

1607 1608 1609 1610 1611 1612 1613 1614 1615 1616
	if (!sta->wme) {
		arvif->num_legacy_stations++;
		ret  = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
			ath10k_warn("failed to recalculate rts/cts prot for vdev %d: %d\n",
				    arvif->vdev_id, ret);
			return ret;
		}
	}

1617 1618
	ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
	if (ret) {
1619
		ath10k_warn("failed to install peer wep keys for vdev %i: %d\n",
1620
			    arvif->vdev_id, ret);
1621 1622 1623
		return ret;
	}

1624 1625
	ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
	if (ret) {
1626
		ath10k_warn("failed to set qos params for STA %pM for vdev %i: %d\n",
1627
			    sta->addr, arvif->vdev_id, ret);
1628 1629 1630
		return ret;
	}

1631 1632 1633 1634 1635 1636 1637 1638
	return ret;
}

static int ath10k_station_disassoc(struct ath10k *ar, struct ath10k_vif *arvif,
				   struct ieee80211_sta *sta)
{
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

1641 1642 1643 1644 1645 1646 1647 1648 1649 1650
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
			ath10k_warn("failed to recalculate rts/cts prot for vdev %d: %d\n",
				    arvif->vdev_id, ret);
			return ret;
		}
	}

1651 1652
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
1653
		ath10k_warn("failed to clear all peer wep keys for vdev %i: %d\n",
1654
			    arvif->vdev_id, ret);
1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677
		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;

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	lockdep_assert_held(&ar->conf_mutex);

1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715
	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 =
1716
				!(channel->flags & IEEE80211_CHAN_NO_IR);
1717 1718 1719 1720

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

1721 1722 1723
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

1724
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
1725 1726 1727
			ch->passive = passive;

			ch->freq = channel->center_freq;
1728
			ch->min_power = 0;
M
Michal Kazior 已提交
1729 1730 1731
			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;
1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745
			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;

			ath10k_dbg(ATH10K_DBG_WMI,
K
Kalle Valo 已提交
1746 1747
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760
				   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;
}

1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776
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;
}

1777
static void ath10k_regd_update(struct ath10k *ar)
1778 1779 1780
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
1781 1782
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
1783

1784
	lockdep_assert_held(&ar->conf_mutex);
1785 1786 1787

	ret = ath10k_update_channel_list(ar);
	if (ret)
1788
		ath10k_warn("failed to update channel list: %d\n", ret);
1789 1790

	regpair = ar->ath_common.regulatory.regpair;
1791

1792 1793 1794 1795 1796 1797 1798
	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;
	}

1799 1800 1801
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
1802 1803 1804
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
1805
					    regpair->reg_2ghz_ctl,
1806 1807
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
1808
	if (ret)
1809
		ath10k_warn("failed to set pdev regdomain: %d\n", ret);
1810
}
M
Michal Kazior 已提交
1811

1812 1813 1814 1815 1816
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
1817
	bool result;
1818 1819 1820

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

J
Janusz Dziedzic 已提交
1821 1822 1823 1824 1825 1826
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
		ath10k_dbg(ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
1827
			ath10k_warn("DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
1828 1829 1830
				    request->dfs_region);
	}

1831 1832 1833
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
1834
	mutex_unlock(&ar->conf_mutex);
1835 1836 1837 1838 1839 1840
}

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

1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854
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;
}

1855 1856 1857 1858 1859 1860
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar,
				  struct ieee80211_tx_info *info)
{
	if (info->control.vif)
		return ath10k_vif_to_arvif(info->control.vif)->vdev_id;

M
Michal Kazior 已提交
1861
	if (ar->monitor_started)
1862 1863
		return ar->monitor_vdev_id;

1864
	ath10k_warn("failed to resolve vdev id\n");
1865 1866 1867
	return 0;
}

1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
/*
 * Frames sent to the FW have to be in "Native Wifi" format.
 * Strip the QoS field from the 802.11 header.
 */
static void ath10k_tx_h_qos_workaround(struct ieee80211_hw *hw,
				       struct ieee80211_tx_control *control,
				       struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
1883 1884 1885
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1886 1887
}

1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
static void ath10k_tx_wep_key_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						wep_key_work);
	int ret, keyidx = arvif->def_wep_key_newidx;

	if (arvif->def_wep_key_idx == keyidx)
		return;

	ath10k_dbg(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) {
1905 1906 1907
		ath10k_warn("failed to update wep key index for vdev %d: %d\n",
			    arvif->vdev_id,
			    ret);
1908 1909 1910 1911 1912 1913
		return;
	}

	arvif->def_wep_key_idx = keyidx;
}

1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932
static void ath10k_tx_h_update_wep_key(struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_key_conf *key = info->control.hw_key;

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

	if (!key)
		return;

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

1933
	if (key->keyidx == arvif->def_wep_key_idx)
1934 1935
		return;

1936 1937 1938 1939 1940
	/* FIXME: Most likely a few frames will be TXed with an old key. Simply
	 * queueing frames until key index is updated is not an option because
	 * sk_buff may need more processing to be done, e.g. offchannel */
	arvif->def_wep_key_newidx = key->keyidx;
	ieee80211_queue_work(ar->hw, &arvif->wep_key_work);
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
}

static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1970
	int ret = 0;
1971

M
Michal Kazior 已提交
1972 1973 1974 1975 1976 1977
	if (ar->htt.target_version_major >= 3) {
		/* Since HTT 3.0 there is no separate mgmt tx command */
		ret = ath10k_htt_tx(&ar->htt, skb);
		goto exit;
	}

1978 1979 1980 1981 1982
	if (ieee80211_is_mgmt(hdr->frame_control)) {
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features)) {
			if (skb_queue_len(&ar->wmi_mgmt_tx_queue) >=
			    ATH10K_MAX_NUM_MGMT_PENDING) {
1983
				ath10k_warn("reached WMI management tranmist queue limit\n");
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
				ret = -EBUSY;
				goto exit;
			}

			skb_queue_tail(&ar->wmi_mgmt_tx_queue, skb);
			ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
		} else {
			ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
		}
	} else if (!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features) &&
		   ieee80211_is_nullfunc(hdr->frame_control)) {
1996 1997
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
1998 1999
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
2000
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2001
	} else {
2002
		ret = ath10k_htt_tx(&ar->htt, skb);
2003
	}
2004

M
Michal Kazior 已提交
2005
exit:
2006
	if (ret) {
2007
		ath10k_warn("failed to transmit packet, dropping: %d\n", ret);
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048
		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);

K
Kalle Valo 已提交
2049
		ath10k_dbg(ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2050 2051 2052 2053
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2054
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2055 2056 2057 2058 2059 2060

		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
2061
			/* FIXME: should this use ath10k_warn()? */
2062 2063 2064 2065 2066 2067
			ath10k_dbg(ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
				   peer_addr, vdev_id);

		if (!peer) {
			ret = ath10k_peer_create(ar, vdev_id, peer_addr);
			if (ret)
2068
				ath10k_warn("failed to create peer %pM on vdev %d: %d\n",
2069 2070 2071 2072
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2073
		reinit_completion(&ar->offchan_tx_completed);
2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

		ath10k_tx_htt(ar, skb);

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

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2088
				ath10k_warn("failed to delete peer %pM on vdev %d: %d\n",
2089 2090 2091 2092 2093 2094 2095
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120
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);
2121
		if (ret) {
2122 2123
			ath10k_warn("failed to transmit management frame via WMI: %d\n",
				    ret);
2124 2125
			ieee80211_free_txskb(ar->hw, skb);
		}
2126 2127 2128
	}
}

2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147
/************/
/* Scanning */
/************/

/*
 * This gets called if we dont get a heart-beat during scan.
 * This may indicate the FW has hung and we need to abort the
 * scan manually to prevent cancel_hw_scan() from deadlocking
 */
void ath10k_reset_scan(unsigned long ptr)
{
	struct ath10k *ar = (struct ath10k *)ptr;

	spin_lock_bh(&ar->data_lock);
	if (!ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		return;
	}

2148
	ath10k_warn("scan timed out, firmware problem?\n");
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 2175 2176 2177 2178 2179 2180 2181 2182 2183

	if (ar->scan.is_roc)
		ieee80211_remain_on_channel_expired(ar->hw);
	else
		ieee80211_scan_completed(ar->hw, 1 /* aborted */);

	ar->scan.in_progress = false;
	complete_all(&ar->scan.completed);
	spin_unlock_bh(&ar->data_lock);
}

static int ath10k_abort_scan(struct ath10k *ar)
{
	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);

	del_timer_sync(&ar->scan.timeout);

	spin_lock_bh(&ar->data_lock);
	if (!ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		return 0;
	}

	ar->scan.aborting = true;
	spin_unlock_bh(&ar->data_lock);

	ret = ath10k_wmi_stop_scan(ar, &arg);
	if (ret) {
2184
		ath10k_warn("failed to stop wmi scan: %d\n", ret);
2185 2186 2187 2188
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		spin_unlock_bh(&ar->data_lock);
2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
		return -EIO;
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
	if (ret == 0)
		ath10k_warn("timed out while waiting for scan to stop\n");

	/* scan completion may be done right after we timeout here, so let's
	 * check the in_progress and tell mac80211 scan is completed. if we
	 * don't do that and FW fails to send us scan completion indication
	 * then userspace won't be able to scan anymore */
	ret = 0;

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
2204
		ath10k_warn("failed to stop scan, it's still in progress\n");
2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		ret = -ETIMEDOUT;
	}
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

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) {
		ath10k_abort_scan(ar);
		return ret;
	}

	/* the scan can complete earlier, before we even
	 * start the timer. in that case the timer handler
	 * checks ar->scan.in_progress and bails out if its
	 * false. Add a 200ms margin to account event/command
	 * processing. */
	mod_timer(&ar->scan.timeout, jiffies +
		  msecs_to_jiffies(arg->max_scan_time+200));
	return 0;
}

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

static void ath10k_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k *ar = hw->priv;
2252
	u8 tid, vdev_id;
2253 2254 2255 2256 2257 2258 2259

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

	/* we must calculate tid before we apply qos workaround
	 * as we'd lose the qos control field */
2260
	tid = ath10k_tx_h_get_tid(hdr);
2261
	vdev_id = ath10k_tx_h_get_vdev_id(ar, info);
2262

2263 2264 2265 2266 2267 2268 2269 2270
	/* it makes no sense to process injected frames like that */
	if (info->control.vif &&
	    info->control.vif->type != NL80211_IFTYPE_MONITOR) {
		ath10k_tx_h_qos_workaround(hw, control, skb);
		ath10k_tx_h_update_wep_key(skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, skb);
		ath10k_tx_h_seq_no(skb);
	}
2271

2272
	ATH10K_SKB_CB(skb)->vdev_id = vdev_id;
2273
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
2274 2275 2276 2277 2278
	ATH10K_SKB_CB(skb)->htt.tid = tid;

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
		ATH10K_SKB_CB(skb)->htt.is_offchan = true;
2279
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294
		spin_unlock_bh(&ar->data_lock);

		ath10k_dbg(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;
	}

	ath10k_tx_htt(ar, skb);
}

/*
 * Initialize various parameters with default vaules.
 */
2295
void ath10k_halt(struct ath10k *ar)
2296
{
2297 2298
	struct ath10k_vif *arvif;

2299 2300
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2301 2302 2303 2304 2305 2306 2307
	if (ath10k_monitor_is_enabled(ar)) {
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		ar->promisc = false;
		ar->monitor = false;
		ath10k_monitor_stop(ar);
	}

2308
	del_timer_sync(&ar->scan.timeout);
2309
	ath10k_reset_scan((unsigned long)ar);
2310
	ath10k_offchan_tx_purge(ar);
2311
	ath10k_mgmt_over_wmi_tx_purge(ar);
2312 2313 2314 2315 2316
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
	list_for_each_entry(arvif, &ar->arvifs, list) {
		if (!arvif->beacon)
			continue;

		dma_unmap_single(arvif->ar->dev,
				 ATH10K_SKB_CB(arvif->beacon)->paddr,
				 arvif->beacon->len, DMA_TO_DEVICE);
		dev_kfree_skb_any(arvif->beacon);
		arvif->beacon = NULL;
	}
2327 2328 2329
	spin_unlock_bh(&ar->data_lock);
}

2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391
static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

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

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

	ar->cfg_tx_chainmask = tx_ant;
	ar->cfg_rx_chainmask = rx_ant;

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

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

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
		ath10k_warn("failed to set rx-chainmask: %d, req 0x%x\n",
			    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;
}

2392 2393 2394
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
2395
	int ret = 0;
2396

M
Michal Kazior 已提交
2397 2398
	mutex_lock(&ar->conf_mutex);

2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410
	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);
2411
		ret = -EINVAL;
2412
		goto err;
2413 2414 2415 2416
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
2417
		ath10k_err("Could not init hif: %d\n", ret);
2418
		goto err_off;
2419 2420 2421 2422
	}

	ret = ath10k_core_start(ar);
	if (ret) {
2423
		ath10k_err("Could not init core: %d\n", ret);
2424
		goto err_power_down;
2425 2426
	}

2427
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2428
	if (ret) {
2429
		ath10k_warn("failed to enable PMF QOS: %d\n", ret);
2430 2431
		goto err_core_stop;
	}
2432

2433
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2434
	if (ret) {
2435
		ath10k_warn("failed to enable dynamic BW: %d\n", ret);
2436 2437
		goto err_core_stop;
	}
2438

2439 2440 2441 2442
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454
	/*
	 * 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) {
2455
		ath10k_warn("failed to set arp ac override parameter: %d\n",
2456
			    ret);
2457
		goto err_core_stop;
2458 2459
	}

2460
	ar->num_started_vdevs = 0;
2461 2462
	ath10k_regd_update(ar);

2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475
	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
2476
	mutex_unlock(&ar->conf_mutex);
2477
	return ret;
2478 2479 2480 2481 2482 2483
}

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

M
Michal Kazior 已提交
2484
	mutex_lock(&ar->conf_mutex);
2485
	if (ar->state != ATH10K_STATE_OFF) {
2486
		ath10k_halt(ar);
2487 2488
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
2489 2490
	mutex_unlock(&ar->conf_mutex);

2491 2492
	ath10k_mgmt_over_wmi_tx_purge(ar);

M
Michal Kazior 已提交
2493
	cancel_work_sync(&ar->offchan_tx_work);
2494
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
2495
	cancel_work_sync(&ar->restart_work);
2496 2497
}

2498
static int ath10k_config_ps(struct ath10k *ar)
2499
{
2500 2501
	struct ath10k_vif *arvif;
	int ret = 0;
2502 2503 2504

	lockdep_assert_held(&ar->conf_mutex);

2505 2506 2507
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
2508
			ath10k_warn("failed to setup powersave: %d\n", ret);
2509 2510 2511
			break;
		}
	}
2512

2513
	return ret;
2514 2515
}

2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554
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);

	ath10k_dbg(ATH10K_DBG_MAC,
		   "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
2555 2556
	if (ar->monitor_started)
		ath10k_monitor_vdev_stop(ar);
2557 2558 2559 2560 2561 2562 2563 2564 2565 2566

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

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

		ret = ath10k_vdev_stop(arvif);
		if (ret) {
2567
			ath10k_warn("failed to stop vdev %d: %d\n",
2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583
				    arvif->vdev_id, ret);
			continue;
		}
	}

	/* all vdevs are now stopped - now attempt to restart them */

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

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

		ret = ath10k_vdev_start(arvif);
		if (ret) {
2584
			ath10k_warn("failed to start vdev %d: %d\n",
2585 2586 2587 2588 2589 2590 2591 2592 2593 2594
				    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) {
2595
			ath10k_warn("failed to bring vdev up %d: %d\n",
2596 2597 2598 2599 2600
				    arvif->vdev_id, ret);
			continue;
		}
	}

M
Michal Kazior 已提交
2601 2602
	if (ath10k_monitor_is_enabled(ar))
		ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
2603 2604
}

2605 2606
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
2607 2608 2609
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;
M
Michal Kazior 已提交
2610
	u32 param;
2611 2612 2613 2614

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2615
		ath10k_dbg(ATH10K_DBG_MAC,
2616
			   "mac config channel %dMHz flags 0x%x radar %d\n",
2617
			   conf->chandef.chan->center_freq,
2618 2619
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
2620

2621 2622 2623
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
2624

2625 2626
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
2627 2628 2629 2630 2631

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
2632 2633
	}

M
Michal Kazior 已提交
2634 2635 2636 2637 2638 2639 2640 2641
	if (changed & IEEE80211_CONF_CHANGE_POWER) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac config power %d\n",
			   hw->conf.power_level);

		param = ar->wmi.pdev_param->txpower_limit2g;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						hw->conf.power_level * 2);
		if (ret)
2642
			ath10k_warn("failed to set 2g txpower %d: %d\n",
M
Michal Kazior 已提交
2643 2644 2645 2646 2647 2648
				    hw->conf.power_level, ret);

		param = ar->wmi.pdev_param->txpower_limit5g;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						hw->conf.power_level * 2);
		if (ret)
2649
			ath10k_warn("failed to set 5g txpower %d: %d\n",
M
Michal Kazior 已提交
2650
				    hw->conf.power_level, ret);
2651 2652
	}

2653 2654
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
2655 2656

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
M
Michal Kazior 已提交
2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669
		if (conf->flags & IEEE80211_CONF_MONITOR && !ar->monitor) {
			ar->monitor = true;
			ret = ath10k_monitor_start(ar);
			if (ret) {
				ath10k_warn("failed to start monitor (config): %d\n",
					    ret);
				ar->monitor = false;
			}
		} else if (!(conf->flags & IEEE80211_CONF_MONITOR) &&
			   ar->monitor) {
			ar->monitor = false;
			ath10k_monitor_stop(ar);
		}
2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689
	}

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

/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
2690
	u32 value;
2691
	int bit;
2692
	u32 vdev_param;
2693 2694 2695

	mutex_lock(&ar->conf_mutex);

2696 2697
	memset(arvif, 0, sizeof(*arvif));

2698 2699 2700
	arvif->ar = ar;
	arvif->vif = vif;

2701
	INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);
2702
	INIT_LIST_HEAD(&arvif->list);
2703

2704 2705 2706
	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ret = -EBUSY;
2707
		goto err;
2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739
	}

	arvif->vdev_id = bit - 1;
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

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

	switch (vif->type) {
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

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

K
Kalle Valo 已提交
2740
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d\n",
2741 2742 2743 2744 2745
		   arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype);

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
2746
		ath10k_warn("failed to create WMI vdev %i: %d\n",
2747
			    arvif->vdev_id, ret);
2748
		goto err;
2749 2750
	}

2751
	ar->free_vdev_map &= ~BIT(arvif->vdev_id);
M
Michal Kazior 已提交
2752
	list_add(&arvif->list, &ar->arvifs);
2753

2754 2755
	vdev_param = ar->wmi.vdev_param->def_keyid;
	ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
2756
					arvif->def_wep_key_idx);
2757
	if (ret) {
2758
		ath10k_warn("failed to set vdev %i default key id: %d\n",
2759
			    arvif->vdev_id, ret);
2760 2761
		goto err_vdev_delete;
	}
2762

2763 2764
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2765
					ATH10K_HW_TXRX_NATIVE_WIFI);
2766
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
2767
	if (ret && ret != -EOPNOTSUPP) {
2768
		ath10k_warn("failed to set vdev %i TX encapsulation: %d\n",
2769
			    arvif->vdev_id, ret);
2770 2771
		goto err_vdev_delete;
	}
2772 2773 2774 2775

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
2776
			ath10k_warn("failed to create vdev %i peer for AP: %d\n",
2777
				    arvif->vdev_id, ret);
2778
			goto err_vdev_delete;
2779
		}
2780

2781 2782
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
2783
			ath10k_warn("failed to set vdev %i kickout parameters: %d\n",
2784
				    arvif->vdev_id, ret);
2785 2786
			goto err_peer_delete;
		}
2787 2788 2789 2790 2791 2792 2793
	}

	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);
2794
		if (ret) {
2795
			ath10k_warn("failed to set vdev %i RX wake policy: %d\n",
2796
				    arvif->vdev_id, ret);
2797 2798
			goto err_peer_delete;
		}
2799 2800 2801 2802 2803

		param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
2804
		if (ret) {
2805
			ath10k_warn("failed to set vdev %i TX wake thresh: %d\n",
2806
				    arvif->vdev_id, ret);
2807 2808
			goto err_peer_delete;
		}
2809 2810 2811 2812 2813

		param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
		value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
2814
		if (ret) {
2815
			ath10k_warn("failed to set vdev %i PSPOLL count: %d\n",
2816
				    arvif->vdev_id, ret);
2817 2818
			goto err_peer_delete;
		}
2819 2820
	}

2821
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
2822
	if (ret) {
2823
		ath10k_warn("failed to set rts threshold for vdev %d: %d\n",
2824
			    arvif->vdev_id, ret);
2825 2826
		goto err_peer_delete;
	}
2827

2828
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
2829
	if (ret) {
2830
		ath10k_warn("failed to set frag threshold for vdev %d: %d\n",
2831
			    arvif->vdev_id, ret);
2832 2833
		goto err_peer_delete;
	}
2834

2835
	mutex_unlock(&ar->conf_mutex);
2836 2837 2838 2839 2840 2841 2842 2843 2844
	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);
	ar->free_vdev_map &= ~BIT(arvif->vdev_id);
M
Michal Kazior 已提交
2845
	list_del(&arvif->list);
2846 2847 2848 2849

err:
	mutex_unlock(&ar->conf_mutex);

2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861
	return ret;
}

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

	mutex_lock(&ar->conf_mutex);

2862 2863
	cancel_work_sync(&arvif->wep_key_work);

2864 2865
	spin_lock_bh(&ar->data_lock);
	if (arvif->beacon) {
2866 2867 2868
		dma_unmap_single(arvif->ar->dev,
				 ATH10K_SKB_CB(arvif->beacon)->paddr,
				 arvif->beacon->len, DMA_TO_DEVICE);
2869 2870 2871 2872 2873
		dev_kfree_skb_any(arvif->beacon);
		arvif->beacon = NULL;
	}
	spin_unlock_bh(&ar->data_lock);

2874
	ar->free_vdev_map |= 1 << (arvif->vdev_id);
M
Michal Kazior 已提交
2875
	list_del(&arvif->list);
2876 2877 2878 2879

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
		if (ret)
2880
			ath10k_warn("failed to remove peer for AP vdev %i: %d\n",
2881
				    arvif->vdev_id, ret);
2882 2883 2884 2885

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

2886
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
2887 2888
		   arvif->vdev_id);

2889 2890
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
2891
		ath10k_warn("failed to delete WMI vdev %i: %d\n",
2892
			    arvif->vdev_id, ret);
2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925

	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;

M
Michal Kazior 已提交
2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936
	if (ar->filter_flags & FIF_PROMISC_IN_BSS && !ar->promisc) {
		ar->promisc = true;
		ret = ath10k_monitor_start(ar);
		if (ret) {
			ath10k_warn("failed to start monitor (promisc): %d\n",
				    ret);
			ar->promisc = false;
		}
	} else if (!(ar->filter_flags & FIF_PROMISC_IN_BSS) && ar->promisc) {
		ar->promisc = false;
		ath10k_monitor_stop(ar);
2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949
	}

	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;
2950
	u32 vdev_param, pdev_param;
2951 2952 2953 2954 2955 2956 2957 2958

	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;
2959 2960
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2961
						arvif->beacon_interval);
K
Kalle Valo 已提交
2962 2963 2964 2965
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

2966
		if (ret)
2967
			ath10k_warn("failed to set beacon interval for vdev %d: %i\n",
2968
				    arvif->vdev_id, ret);
2969 2970 2971
	}

	if (changed & BSS_CHANGED_BEACON) {
K
Kalle Valo 已提交
2972 2973 2974 2975
		ath10k_dbg(ATH10K_DBG_MAC,
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

2976 2977
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
2978 2979
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
2980
			ath10k_warn("failed to set beacon mode for vdev %d: %i\n",
2981
				    arvif->vdev_id, ret);
2982 2983
	}

2984
	if (changed & BSS_CHANGED_BEACON_INFO) {
2985 2986
		arvif->dtim_period = info->dtim_period;

K
Kalle Valo 已提交
2987 2988 2989 2990
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

2991 2992
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2993 2994
						arvif->dtim_period);
		if (ret)
2995
			ath10k_warn("failed to set dtim period for vdev %d: %i\n",
2996
				    arvif->vdev_id, ret);
2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008
	}

	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;
	}

	if (changed & BSS_CHANGED_BSSID) {
		if (!is_zero_ether_addr(info->bssid)) {
K
Kalle Valo 已提交
3009 3010 3011 3012
			ath10k_dbg(ATH10K_DBG_MAC,
				   "mac vdev %d create peer %pM\n",
				   arvif->vdev_id, info->bssid);

3013 3014 3015
			ret = ath10k_peer_create(ar, arvif->vdev_id,
						 info->bssid);
			if (ret)
3016
				ath10k_warn("failed to add peer %pM for vdev %d when changing bssid: %i\n",
3017
					    info->bssid, arvif->vdev_id, ret);
3018 3019 3020 3021 3022 3023

			if (vif->type == NL80211_IFTYPE_STATION) {
				/*
				 * this is never erased as we it for crypto key
				 * clearing; this is FW requirement
				 */
3024
				memcpy(arvif->bssid, info->bssid, ETH_ALEN);
3025

K
Kalle Valo 已提交
3026 3027 3028 3029
				ath10k_dbg(ATH10K_DBG_MAC,
					   "mac vdev %d start %pM\n",
					   arvif->vdev_id, info->bssid);

3030
				ret = ath10k_vdev_start(arvif);
3031
				if (ret) {
3032 3033
					ath10k_warn("failed to start vdev %i: %d\n",
						    arvif->vdev_id, ret);
3034
					goto exit;
3035 3036 3037
				}

				arvif->is_started = true;
3038 3039 3040 3041 3042 3043 3044 3045
			}

			/*
			 * Mac80211 does not keep IBSS bssid when leaving IBSS,
			 * so driver need to store it. It is needed when leaving
			 * IBSS in order to remove BSSID peer.
			 */
			if (vif->type == NL80211_IFTYPE_ADHOC)
3046
				memcpy(arvif->bssid, info->bssid,
3047 3048 3049 3050 3051 3052 3053 3054
				       ETH_ALEN);
		}
	}

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3055
		arvif->use_cts_prot = info->use_cts_prot;
K
Kalle Valo 已提交
3056
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
3057
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
3058

3059
		ret = ath10k_recalc_rtscts_prot(arvif);
3060
		if (ret)
3061
			ath10k_warn("failed to recalculate rts/cts prot for vdev %d: %d\n",
3062
				    arvif->vdev_id, ret);
3063 3064 3065 3066 3067 3068 3069 3070 3071 3072
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		u32 slottime;
		if (info->use_short_slot)
			slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */

		else
			slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */

K
Kalle Valo 已提交
3073 3074 3075
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
			   arvif->vdev_id, slottime);

3076 3077
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3078 3079
						slottime);
		if (ret)
3080
			ath10k_warn("failed to set erp slot for vdev %d: %i\n",
3081
				    arvif->vdev_id, ret);
3082 3083 3084 3085 3086 3087 3088 3089 3090
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		u32 preamble;
		if (info->use_short_preamble)
			preamble = WMI_VDEV_PREAMBLE_SHORT;
		else
			preamble = WMI_VDEV_PREAMBLE_LONG;

K
Kalle Valo 已提交
3091 3092 3093 3094
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

3095 3096
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3097 3098
						preamble);
		if (ret)
3099
			ath10k_warn("failed to set preamble for vdev %d: %i\n",
3100
				    arvif->vdev_id, ret);
3101 3102 3103 3104 3105 3106 3107
	}

	if (changed & BSS_CHANGED_ASSOC) {
		if (info->assoc)
			ath10k_bss_assoc(hw, vif, info);
	}

3108
exit:
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
			  struct cfg80211_scan_request *req)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		ret = -EBUSY;
		goto exit;
	}

3131 3132
	reinit_completion(&ar->scan.started);
	reinit_completion(&ar->scan.completed);
3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157
	ar->scan.in_progress = true;
	ar->scan.aborting = false;
	ar->scan.is_roc = false;
	ar->scan.vdev_id = arvif->vdev_id;
	spin_unlock_bh(&ar->data_lock);

	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;
		}
3158 3159
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3160 3161 3162 3163 3164 3165 3166 3167 3168 3169
	}

	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) {
3170
		ath10k_warn("failed to start hw scan: %d\n", ret);
3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		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;
	int ret;

	mutex_lock(&ar->conf_mutex);
	ret = ath10k_abort_scan(ar);
	if (ret) {
3190
		ath10k_warn("failed to abort scan: %d\n", ret);
3191 3192 3193 3194 3195
		ieee80211_scan_completed(hw, 1 /* aborted */);
	}
	mutex_unlock(&ar->conf_mutex);
}

3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229
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)
3230 3231
		ath10k_warn("failed to set vdev %i group key as default key: %d\n",
			    arvif->vdev_id, ret);
3232 3233
}

3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267
static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;

	if (key->keyidx > WMI_MAX_KEY_INDEX)
		return -ENOSPC;

	mutex_lock(&ar->conf_mutex);

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

	key->hw_key_idx = key->keyidx;

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

	if (!peer) {
		if (cmd == SET_KEY) {
3268
			ath10k_warn("failed to install key for non-existent peer %pM\n",
3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;

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

	ret = ath10k_install_key(arvif, key, cmd, peer_addr);
	if (ret) {
3291
		ath10k_warn("failed to install key for vdev %i peer %pM: %d\n",
3292
			    arvif->vdev_id, peer_addr, ret);
3293 3294 3295
		goto exit;
	}

3296 3297
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

3298 3299 3300 3301 3302 3303 3304 3305
	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 */
3306
		ath10k_warn("Peer %pM disappeared!\n", peer_addr);
3307 3308 3309 3310 3311 3312 3313
	spin_unlock_bh(&ar->data_lock);

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

3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373
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) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
			   sta->addr, bw);

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

	if (changed & IEEE80211_RC_NSS_CHANGED) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
			   sta->addr, nss);

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

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
			   sta->addr, smps);

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

3374 3375 3376 3377 3378 3379
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac update sta %pM supp rates\n",
			   sta->addr);

		err = ath10k_station_assoc(ar, arvif, sta, true);
		if (err)
3380
			ath10k_warn("failed to reassociate station: %pM\n",
3381 3382 3383
				    sta->addr);
	}

3384 3385 3386
	mutex_unlock(&ar->conf_mutex);
}

3387 3388 3389 3390 3391 3392 3393 3394
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);
3395
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3396
	int max_num_peers;
3397 3398
	int ret = 0;

3399 3400 3401 3402 3403 3404 3405
	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);
	}

3406 3407 3408 3409 3410
	/* 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);

3411 3412 3413 3414 3415 3416 3417 3418
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE &&
	    vif->type != NL80211_IFTYPE_STATION) {
		/*
		 * New station addition.
		 */
3419 3420 3421 3422 3423 3424
		if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features))
			max_num_peers = TARGET_10X_NUM_PEERS_MAX - 1;
		else
			max_num_peers = TARGET_NUM_PEERS;

		if (ar->num_peers >= max_num_peers) {
3425
			ath10k_warn("number of peers exceeded: peers number %d (max peers %d)\n",
3426 3427 3428 3429 3430
				    ar->num_peers, max_num_peers);
			ret = -ENOBUFS;
			goto exit;
		}

K
Kalle Valo 已提交
3431
		ath10k_dbg(ATH10K_DBG_MAC,
3432 3433
			   "mac vdev %d peer create %pM (new sta) num_peers %d\n",
			   arvif->vdev_id, sta->addr, ar->num_peers);
K
Kalle Valo 已提交
3434

3435 3436
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
		if (ret)
3437
			ath10k_warn("failed to add peer %pM for vdev %d when adding a new sta: %i\n",
3438
				    sta->addr, arvif->vdev_id, ret);
3439 3440 3441 3442 3443
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
K
Kalle Valo 已提交
3444 3445 3446
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
3447 3448
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
3449
			ath10k_warn("failed to delete peer %pM for vdev %d: %i\n",
3450
				    sta->addr, arvif->vdev_id, ret);
3451 3452 3453 3454 3455 3456 3457 3458 3459 3460

		if (vif->type == NL80211_IFTYPE_STATION)
			ath10k_bss_disassoc(hw, vif);
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
K
Kalle Valo 已提交
3461 3462 3463
		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM associated\n",
			   sta->addr);

3464
		ret = ath10k_station_assoc(ar, arvif, sta, false);
3465
		if (ret)
3466
			ath10k_warn("failed to associate station %pM for vdev %i: %i\n",
3467
				    sta->addr, arvif->vdev_id, ret);
3468 3469 3470 3471 3472 3473 3474
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * Disassociation.
		 */
K
Kalle Valo 已提交
3475 3476 3477
		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
			   sta->addr);

3478 3479
		ret = ath10k_station_disassoc(ar, arvif, sta);
		if (ret)
3480
			ath10k_warn("failed to disassociate station: %pM vdev %i: %i\n",
3481
				    sta->addr, arvif->vdev_id, ret);
3482
	}
3483
exit:
3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

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

M
Michal Kazior 已提交
3495 3496
	lockdep_assert_held(&ar->conf_mutex);

3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527
	if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
		return 0;

	switch (ac) {
	case IEEE80211_AC_VO:
		value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
		break;
	}

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

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_UAPSD,
					  arvif->u.sta.uapsd);
	if (ret) {
3528
		ath10k_warn("failed to set uapsd params: %d\n", ret);
3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540
		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)
3541
		ath10k_warn("failed to set rx wake param: %d\n", ret);
3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590

exit:
	return ret;
}

static int ath10k_conf_tx(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif, u16 ac,
			  const struct ieee80211_tx_queue_params *params)
{
	struct ath10k *ar = hw->priv;
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

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

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

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

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

	/* FIXME: FW accepts wmm params per hw, not per vif */
	ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
	if (ret) {
3591
		ath10k_warn("failed to set wmm params: %d\n", ret);
3592 3593 3594 3595 3596
		goto exit;
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
3597
		ath10k_warn("failed to set sta uapsd: %d\n", ret);
3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625

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;
	int ret;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		ret = -EBUSY;
		goto exit;
	}

3626 3627 3628
	reinit_completion(&ar->scan.started);
	reinit_completion(&ar->scan.completed);
	reinit_completion(&ar->scan.on_channel);
3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649
	ar->scan.in_progress = true;
	ar->scan.aborting = false;
	ar->scan.is_roc = true;
	ar->scan.vdev_id = arvif->vdev_id;
	ar->scan.roc_freq = chan->center_freq;
	spin_unlock_bh(&ar->data_lock);

	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) {
3650
		ath10k_warn("failed to start roc scan: %d\n", ret);
3651 3652 3653 3654 3655 3656 3657 3658
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
3659
		ath10k_warn("failed to switch to channel for roc scan\n");
3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686
		ath10k_abort_scan(ar);
		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);
	ath10k_abort_scan(ar);
	mutex_unlock(&ar->conf_mutex);

	return 0;
}

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

3687 3688 3689 3690 3691
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
3692

3693
	mutex_lock(&ar->conf_mutex);
3694 3695 3696 3697 3698 3699
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
3700
			ath10k_warn("failed to set rts threshold for vdev %d: %d\n",
3701 3702 3703 3704
				    arvif->vdev_id, ret);
			break;
		}
	}
3705 3706
	mutex_unlock(&ar->conf_mutex);

3707
	return ret;
3708 3709
}

3710
static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3711
{
3712 3713 3714
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
M
Michal Kazior 已提交
3715

3716
	mutex_lock(&ar->conf_mutex);
3717 3718 3719 3720 3721 3722
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d fragmentation threshold %d\n",
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
3723
			ath10k_warn("failed to set fragmentation threshold for vdev %d: %d\n",
3724 3725 3726 3727
				    arvif->vdev_id, ret);
			break;
		}
	}
3728 3729
	mutex_unlock(&ar->conf_mutex);

3730
	return ret;
3731 3732
}

3733 3734
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
3735 3736
{
	struct ath10k *ar = hw->priv;
3737
	bool skip;
3738 3739 3740 3741 3742 3743 3744
	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
3745 3746
	mutex_lock(&ar->conf_mutex);

3747 3748 3749
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

3750
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
3751
			bool empty;
3752

3753
			spin_lock_bh(&ar->htt.tx_lock);
3754
			empty = (ar->htt.num_pending_tx == 0);
3755
			spin_unlock_bh(&ar->htt.tx_lock);
3756 3757 3758 3759

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

			(empty || skip);
3760
		}), ATH10K_FLUSH_TIMEOUT_HZ);
3761 3762

	if (ret <= 0 || skip)
3763
		ath10k_warn("failed to flush transmit queue (skip %i ar-state %i): %i\n",
3764
			    skip, ar->state, ret);
M
Michal Kazior 已提交
3765

3766
skip:
M
Michal Kazior 已提交
3767
	mutex_unlock(&ar->conf_mutex);
3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778
}

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

M
Michal Kazior 已提交
3779 3780 3781 3782 3783 3784 3785
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

3786 3787
	mutex_lock(&ar->conf_mutex);

3788
	ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
M
Michal Kazior 已提交
3789
	if (ret) {
3790 3791
		if (ret == -ETIMEDOUT)
			goto resume;
3792 3793
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3794 3795 3796 3797
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
3798
		ath10k_warn("failed to suspend hif: %d\n", ret);
M
Michal Kazior 已提交
3799 3800 3801
		goto resume;
	}

3802 3803
	ret = 0;
	goto exit;
M
Michal Kazior 已提交
3804 3805 3806
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
3807
		ath10k_warn("failed to resume target: %d\n", ret);
3808 3809 3810 3811 3812

	ret = 1;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3813 3814 3815 3816 3817 3818 3819
}

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

3820 3821
	mutex_lock(&ar->conf_mutex);

M
Michal Kazior 已提交
3822 3823
	ret = ath10k_hif_resume(ar);
	if (ret) {
3824
		ath10k_warn("failed to resume hif: %d\n", ret);
3825 3826
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3827 3828 3829 3830
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
3831
		ath10k_warn("failed to resume target: %d\n", ret);
3832 3833
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3834 3835
	}

3836 3837 3838 3839
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3840 3841 3842
}
#endif

3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858
static void ath10k_restart_complete(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	/* If device failed to restart it will be in a different state, e.g.
	 * ATH10K_STATE_WEDGED */
	if (ar->state == ATH10K_STATE_RESTARTED) {
		ath10k_info("device successfully recovered\n");
		ar->state = ATH10K_STATE_ON;
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath10k *ar = hw->priv;
	struct ieee80211_supported_band *sband;
	struct survey_info *ar_survey = &ar->survey[idx];
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

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

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

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

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

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

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

3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 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 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129
/* Helper table for legacy fixed_rate/bitrate_mask */
static const u8 cck_ofdm_rate[] = {
	/* CCK */
	3, /* 1Mbps */
	2, /* 2Mbps */
	1, /* 5.5Mbps */
	0, /* 11Mbps */
	/* OFDM */
	3, /* 6Mbps */
	7, /* 9Mbps */
	2, /* 12Mbps */
	6, /* 18Mbps */
	1, /* 24Mbps */
	5, /* 36Mbps */
	0, /* 48Mbps */
	4, /* 54Mbps */
};

/* Check if only one bit set */
static int ath10k_check_single_mask(u32 mask)
{
	int bit;

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

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

	return 1;
}

static bool
ath10k_default_bitrate_mask(struct ath10k *ar,
			    enum ieee80211_band band,
			    const struct cfg80211_bitrate_mask *mask)
{
	u32 legacy = 0x00ff;
	u8 ht = 0xff, i;
	u16 vht = 0x3ff;

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

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

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

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

	return true;
}

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

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

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

	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;
		else
			return false;
	}

	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
ath10k_bitrate_mask_rate(const struct cfg80211_bitrate_mask *mask,
			 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;

	ath10k_dbg(ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

static bool ath10k_get_fixed_rate_nss(const struct cfg80211_bitrate_mask *mask,
				      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 */
	return ath10k_bitrate_mask_rate(mask, band, fixed_rate, fixed_nss);
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
4130 4131
				       u8 fixed_nss,
				       u8 force_sgi)
4132 4133 4134 4135 4136 4137 4138 4139
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
4140 4141
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
4142 4143 4144 4145 4146
		goto exit;

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

4147 4148 4149
	if (force_sgi)
		ath10k_dbg(ATH10K_DBG_MAC, "mac force sgi\n");

4150 4151 4152 4153
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
4154
		ath10k_warn("failed to set fixed rate param 0x%02x: %d\n",
4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166
			    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) {
4167
		ath10k_warn("failed to set fixed nss param %d: %d\n",
4168 4169 4170 4171 4172 4173 4174
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

4175 4176 4177 4178 4179
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
4180
		ath10k_warn("failed to set sgi param %d: %d\n",
4181 4182 4183 4184 4185 4186 4187
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201
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;
4202 4203 4204 4205 4206
	u8 force_sgi;

	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
4207 4208 4209 4210 4211 4212 4213 4214

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
		if (!ath10k_get_fixed_rate_nss(mask, band,
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

4215
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4216
		ath10k_warn("failed to force SGI usage for default rate settings\n");
4217 4218 4219 4220 4221
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
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 4250 4251 4252 4253
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);

	ath10k_dbg(ATH10K_DBG_MAC,
		   "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:
4254 4255
			ath10k_warn("Invalid bandwith %d in rc update for %pM\n",
				    sta->bandwidth, sta->addr);
4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280
			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:
4281 4282
			ath10k_warn("Invalid smps %d in sta rc update for %pM\n",
				    sta->smps_mode, sta->addr);
4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296
			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);
}

4297 4298 4299 4300 4301 4302 4303 4304 4305 4306
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;
}

4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
	.sta_state			= ath10k_sta_state,
	.conf_tx			= ath10k_conf_tx,
	.remain_on_channel		= ath10k_remain_on_channel,
	.cancel_remain_on_channel	= ath10k_cancel_remain_on_channel,
	.set_rts_threshold		= ath10k_set_rts_threshold,
	.set_frag_threshold		= ath10k_set_frag_threshold,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
4327 4328
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
4329
	.restart_complete		= ath10k_restart_complete,
M
Michal Kazior 已提交
4330
	.get_survey			= ath10k_get_survey,
4331
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
4332
	.sta_rc_update			= ath10k_sta_rc_update,
4333
	.get_tsf			= ath10k_get_tsf,
M
Michal Kazior 已提交
4334 4335 4336 4337
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381
};

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

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

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

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

static const struct ieee80211_channel ath10k_5ghz_channels[] = {
4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405
	CHAN5G(36, 5180, 0),
	CHAN5G(40, 5200, 0),
	CHAN5G(44, 5220, 0),
	CHAN5G(48, 5240, 0),
	CHAN5G(52, 5260, 0),
	CHAN5G(56, 5280, 0),
	CHAN5G(60, 5300, 0),
	CHAN5G(64, 5320, 0),
	CHAN5G(100, 5500, 0),
	CHAN5G(104, 5520, 0),
	CHAN5G(108, 5540, 0),
	CHAN5G(112, 5560, 0),
	CHAN5G(116, 5580, 0),
	CHAN5G(120, 5600, 0),
	CHAN5G(124, 5620, 0),
	CHAN5G(128, 5640, 0),
	CHAN5G(132, 5660, 0),
	CHAN5G(136, 5680, 0),
	CHAN5G(140, 5700, 0),
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 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 4448 4449 4450 4451 4452 4453 4454
};

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

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

struct ath10k *ath10k_mac_create(void)
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

	hw = ieee80211_alloc_hw(sizeof(struct ath10k), &ath10k_ops);
	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)
4455 4456 4457 4458 4459 4460 4461 4462 4463
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
4464 4465
};

4466
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480
	{
	.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,
	},
4481 4482 4483
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4484
	{
4485 4486
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4487 4488 4489
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
4490
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
4491 4492 4493 4494 4495
		.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
4496
	},
4497 4498 4499 4500 4501 4502
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
4503
	int i;
4504 4505 4506 4507

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

4508 4509 4510 4511 4512 4513 4514
	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);
	}
4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576

	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;

4577
	for (i = 0; i < ar->num_rf_chains; i++)
4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609
		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) {
4610
		ath10k_warn("No VIF found for vdev %d\n", vdev_id);
4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);

	SET_IEEE80211_DEV(ar->hw, ar->dev);

	ht_cap = ath10k_get_ht_cap(ar);
	vht_cap = ath10k_create_vht_cap(ar);

	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		channels = kmemdup(ath10k_2ghz_channels,
				   sizeof(ath10k_2ghz_channels),
				   GFP_KERNEL);
M
Michal Kazior 已提交
4636 4637 4638 4639
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

		/* vht is not supported in 2.4 GHz */

		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
M
Michal Kazior 已提交
4658 4659
			ret = -ENOMEM;
			goto err_free;
4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674
		}

		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) |
		BIT(NL80211_IFTYPE_ADHOC) |
4675 4676
		BIT(NL80211_IFTYPE_AP);

4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688
	if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
		/* TODO:  Have to deal with 2x2 chips if/when the come out. */
		ar->supp_tx_chainmask = TARGET_10X_TX_CHAIN_MASK;
		ar->supp_rx_chainmask = TARGET_10X_RX_CHAIN_MASK;
	} else {
		ar->supp_tx_chainmask = TARGET_TX_CHAIN_MASK;
		ar->supp_rx_chainmask = TARGET_RX_CHAIN_MASK;
	}

	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

4689 4690 4691 4692
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
4693 4694 4695 4696 4697 4698 4699 4700 4701

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_SUPPORTS_UAPSD |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
			IEEE80211_HW_SUPPORTS_STATIC_SMPS |
4702 4703
			IEEE80211_HW_AP_LINK_PS |
			IEEE80211_HW_SPECTRUM_MGMT;
4704

4705 4706 4707 4708
	/* MSDU can have HTT TX fragment pushed in front. The additional 4
	 * bytes is used for padding/alignment if necessary. */
	ar->hw->extra_tx_headroom += sizeof(struct htt_data_tx_desc_frag)*2 + 4;

4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
		ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
		ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
		ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
	}

	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
	ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;

	ar->hw->vif_data_size = sizeof(struct ath10k_vif);
4721
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
4722 4723 4724 4725

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
4726
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
4727 4728 4729 4730 4731 4732 4733 4734 4735
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
	ar->hw->queues = 4;

4736 4737 4738 4739 4740 4741 4742 4743 4744
	if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
	} else {
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
	}
4745

4746 4747
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
4748 4749 4750 4751 4752 4753 4754
	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)
4755
			ath10k_warn("failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
4756 4757
	}

4758 4759 4760
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
4761
		ath10k_err("failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
4762
		goto err_free;
4763 4764 4765 4766
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
4767
		ath10k_err("failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
4768
		goto err_free;
4769 4770 4771 4772 4773 4774
	}

	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
4775
			goto err_unregister;
4776 4777 4778
	}

	return 0;
M
Michal Kazior 已提交
4779 4780

err_unregister:
4781
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
4782 4783 4784 4785
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

4786 4787 4788 4789 4790 4791 4792
	return ret;
}

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

J
Janusz Dziedzic 已提交
4793 4794 4795
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

4796 4797 4798 4799 4800
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}