mac.c 114.2 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;
		key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
		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)
			ath10k_warn("could not remove peer wep key %d (%d)\n",
				    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)
			ath10k_warn("could not remove key for %pM\n", addr);
	}

	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",
			    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",
			    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",
			    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",
			    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",
			    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",
			    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;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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	reinit_completion(&ar->vdev_setup_done);
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	arg.vdev_id = arvif->vdev_id;
	arg.dtim_period = arvif->dtim_period;
	arg.bcn_intval = arvif->beacon_interval;

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	arg.channel.freq = chandef->chan->center_freq;
	arg.channel.band_center_freq1 = chandef->center_freq1;
	arg.channel.mode = chan_to_phymode(chandef);
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	arg.channel.min_power = 0;
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	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;
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	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;
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		/* For now allow DFS for AP mode */
		arg.channel.chan_radar =
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			!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
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	} 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;
	}

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	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));

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

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

	return ret;
}

static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

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

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

	return ret;
}

static int ath10k_monitor_start(struct ath10k *ar, int vdev_id)
{
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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);

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	if (!ar->monitor_present) {
		ath10k_warn("mac montor stop -- monitor is not present\n");
		return -EINVAL;
	}

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	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("Monitor vdev %i start failed: ret %d\n",
			    vdev_id, ret);
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		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
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		ath10k_warn("Monitor vdev %i setup failed %d\n",
			    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("Monitor vdev %i up failed: %d\n",
			    vdev_id, ret);
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		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;
	ar->monitor_enabled = true;

	return 0;

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

static int ath10k_monitor_stop(struct ath10k *ar)
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (!ar->monitor_present) {
		ath10k_warn("mac montor stop -- monitor is not present\n");
		return -EINVAL;
	}

	if (!ar->monitor_enabled) {
		ath10k_warn("mac montor stop -- monitor is not enabled\n");
		return -EINVAL;
	}

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	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn("Monitor vdev %i down failed: %d\n",
			    ar->monitor_vdev_id, ret);
660 661 662

	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
663 664
		ath10k_warn("Monitor vdev %i stop failed: %d\n",
			    ar->monitor_vdev_id, ret);
665 666 667

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
668 669
		ath10k_warn("Monitor_down sync failed, vdev %i: %d\n",
			    ar->monitor_vdev_id, ret);
670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698

	ar->monitor_enabled = false;
	return ret;
}

static int ath10k_monitor_create(struct ath10k *ar)
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	if (ar->monitor_present) {
		ath10k_warn("Monitor mode already enabled\n");
		return 0;
	}

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ath10k_warn("No free VDEV slots\n");
		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) {
699 700
		ath10k_warn("WMI vdev %i monitor create failed: ret %d\n",
			    ar->monitor_vdev_id, ret);
701 702 703
		goto vdev_fail;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728
		   ar->monitor_vdev_id);

	ar->monitor_present = true;
	return 0;

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

static int ath10k_monitor_destroy(struct ath10k *ar)
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	if (!ar->monitor_present)
		return 0;

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
729 730
		ath10k_warn("WMI vdev %i monitor delete failed: %d\n",
			    ar->monitor_vdev_id, ret);
731 732 733 734 735 736
		return ret;
	}

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

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
738 739 740 741
		   ar->monitor_vdev_id);
	return ret;
}

742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
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);
}

762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

	ret = ath10k_monitor_create(ar);
	if (ret) {
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

	ret = ath10k_monitor_start(ar, ar->monitor_vdev_id);
	if (ret) {
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		ath10k_monitor_destroy(ar);
		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;

	ath10k_monitor_stop(ar);
	ath10k_monitor_destroy(ar);
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

	ath10k_dbg(ATH10K_DBG_MAC, "mac cac finished\n");

	return 0;
}

static const char *ath10k_dfs_state(enum nl80211_dfs_state dfs_state)
{
	switch (dfs_state) {
	case NL80211_DFS_USABLE:
		return "USABLE";
	case NL80211_DFS_UNAVAILABLE:
		return "UNAVAILABLE";
	case NL80211_DFS_AVAILABLE:
		return "AVAILABLE";
	default:
		WARN_ON(1);
		return "bug";
	}
}

static void ath10k_config_radar_detection(struct ath10k *ar)
{
	struct ieee80211_channel *chan = ar->hw->conf.chandef.chan;
	bool radar = ar->hw->conf.radar_enabled;
	bool chan_radar = !!(chan->flags & IEEE80211_CHAN_RADAR);
	enum nl80211_dfs_state dfs_state = chan->dfs_state;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_dbg(ATH10K_DBG_MAC,
		   "mac radar config update: chan %dMHz radar %d chan radar %d chan state %s\n",
		   chan->center_freq, radar, chan_radar,
		   ath10k_dfs_state(dfs_state));

	/*
	 * It's safe to call it even if CAC is not started.
	 * This call here guarantees changing channel, etc. will stop CAC.
	 */
	ath10k_stop_cac(ar);

	if (!radar)
		return;

	if (!chan_radar)
		return;

	if (dfs_state != NL80211_DFS_USABLE)
		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.
		 */
		ath10k_warn("failed to start CAC (%d)\n", ret);
		ieee80211_radar_detected(ar->hw);
	}
}

863 864 865 866 867
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);

870 871
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
872 873 874 875

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

876 877
		spin_lock_bh(&arvif->ar->data_lock);
		if (arvif->beacon) {
878 879 880
			dma_unmap_single(arvif->ar->dev,
					 ATH10K_SKB_CB(arvif->beacon)->paddr,
					 arvif->beacon->len, DMA_TO_DEVICE);
881 882 883 884 885 886 887
			dev_kfree_skb_any(arvif->beacon);

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

888 889 890 891 892 893 894 895 896
		return;
	}

	arvif->tx_seq_no = 0x1000;

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

897 898 899 900 901
	arvif->aid = 0;
	memcpy(arvif->bssid, info->bssid, ETH_ALEN);

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
902
	if (ret) {
903 904
		ath10k_warn("Failed to bring up vdev %d: %i\n",
			    arvif->vdev_id, ret);
905
		ath10k_vdev_stop(arvif);
906 907
		return;
	}
908 909 910 911

	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);
913 914 915 916 917 918
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
919
	u32 vdev_param;
920 921
	int ret = 0;

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

924 925 926 927 928 929
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
			ath10k_warn("Failed to delete IBSS self peer:%pM for VDEV:%d ret:%d\n",
				    self_peer, arvif->vdev_id, ret);

930
		if (is_zero_ether_addr(arvif->bssid))
931 932 933
			return;

		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id,
934
					 arvif->bssid);
935 936
		if (ret) {
			ath10k_warn("Failed to delete IBSS BSSID peer:%pM for VDEV:%d ret:%d\n",
937
				    arvif->bssid, arvif->vdev_id, ret);
938 939 940
			return;
		}

941
		memset(arvif->bssid, 0, ETH_ALEN);
942 943 944 945 946 947 948 949 950 951 952

		return;
	}

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

953 954
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
955 956 957 958 959 960 961 962 963
					ATH10K_DEFAULT_ATIM);
	if (ret)
		ath10k_warn("Failed to set IBSS ATIM for VDEV:%d ret:%d\n",
			    arvif->vdev_id, ret);
}

/*
 * Review this when mac80211 gains per-interface powersave support.
 */
964
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
965
{
966 967
	struct ath10k *ar = arvif->ar;
	struct ieee80211_conf *conf = &ar->hw->conf;
968 969 970 971
	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);

974 975
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
976 977 978 979 980

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

981
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
982 983
						  conf->dynamic_ps_timeout);
		if (ret) {
984 985
			ath10k_warn("Failed to set inactivity time for vdev %d: %i\n",
				    arvif->vdev_id, ret);
986
			return ret;
987 988 989 990 991
		}
	} 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");

995 996
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
997 998
		ath10k_warn("Failed to set PS Mode: %d for VDEV: %d\n",
			    psmode, arvif->vdev_id);
999 1000 1001 1002
		return ret;
	}

	return 0;
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
}

/**********************/
/* 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);

1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
	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);

1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
	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);

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176
	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;

1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
	/*
	 * 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;
	}
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	ath10k_dbg(ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
		   arg->addr,
1197 1198 1199 1200
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1201 1202 1203
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1204 1205 1206
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1207
	int ret = 0;
1208

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	lockdep_assert_held(&ar->conf_mutex);

1211
	if (sta->wme && sta->uapsd_queues) {
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		ath10k_dbg(ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
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			   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;

1232 1233 1234 1235 1236
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1237 1238
			ath10k_warn("failed to set ap ps peer param uapsd for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1239 1240
			return ret;
		}
1241

1242 1243 1244 1245 1246
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1247 1248
			ath10k_warn("failed to set ap ps peer param max sp for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1249 1250
			return ret;
		}
1251 1252 1253 1254 1255

		/* 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 */
1256 1257 1258
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
					WMI_AP_PS_PEER_PARAM_AGEOUT_TIME, 10);
		if (ret) {
1259 1260
			ath10k_warn("failed to set ap ps peer param ageout time for vdev %i: %d\n",
				    arvif->vdev_id, ret);
1261 1262
			return ret;
		}
1263 1264
	}

1265
	return 0;
1266 1267 1268 1269 1270 1271 1272
}

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;
1273
	u8 ampdu_factor;
1274 1275 1276 1277 1278 1279 1280

	if (!vht_cap->vht_supported)
		return;

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

1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293

	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);

1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305
	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);
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317
}

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:
1318 1319 1320 1321 1322 1323 1324
		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;
		}
1325 1326
		break;
	case WMI_VDEV_TYPE_STA:
1327 1328
		if (bss_conf->qos)
			arg->peer_flags |= WMI_PEER_QOS;
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
		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:
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
		/*
		 * 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) {
1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
			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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1382 1383 1384 1385
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

1386 1387 1388 1389 1390
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)
1391
{
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	lockdep_assert_held(&ar->conf_mutex);

1394
	memset(arg, 0, sizeof(*arg));
1395

1396 1397 1398 1399 1400 1401 1402
	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);
1403

1404
	return 0;
1405 1406
}

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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]);
}

1434 1435 1436 1437 1438 1439 1440
/* 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;
1442
	struct wmi_peer_assoc_complete_arg peer_arg;
1443 1444 1445
	struct ieee80211_sta *ap_sta;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1448 1449 1450 1451
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
1452 1453
		ath10k_warn("Failed to find station entry for %pM, vdev %i\n",
			    bss_conf->bssid, arvif->vdev_id);
1454 1455 1456 1457
		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;

1462 1463
	ret = ath10k_peer_assoc_prepare(ar, arvif, ap_sta,
					bss_conf, &peer_arg);
1464
	if (ret) {
1465 1466
		ath10k_warn("Peer assoc prepare failed for %pM vdev %i\n: %d",
			    bss_conf->bssid, arvif->vdev_id, ret);
1467 1468 1469 1470 1471 1472
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

1473 1474
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
1475 1476
		ath10k_warn("Peer assoc failed for %pM vdev %i\n: %d",
			    bss_conf->bssid, arvif->vdev_id, ret);
1477 1478 1479
		return;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
1482 1483
		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);

1491 1492 1493 1494 1495
	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) {
1496 1497
		ath10k_warn("VDEV: %d up failed: ret %d\n",
			    arvif->vdev_id, ret);
1498 1499 1500 1501
		return;
	}

	arvif->is_up = true;
1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513
}

/*
 * 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);

1516 1517 1518 1519 1520 1521
	/*
	 * 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 */
1526 1527 1528 1529 1530 1531 1532 1533 1534
	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? */
1538 1539
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);

1540
	arvif->def_wep_key_idx = 0;
1541 1542 1543

	arvif->is_started = false;
	arvif->is_up = false;
1544 1545 1546
}

static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif,
1547
				struct ieee80211_sta *sta, bool reassoc)
1548
{
1549
	struct wmi_peer_assoc_complete_arg peer_arg;
1550 1551
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

1554 1555
	ret = ath10k_peer_assoc_prepare(ar, arvif, sta, NULL, &peer_arg);
	if (ret) {
1556 1557
		ath10k_warn("WMI peer assoc prepare failed for %pM vdev %i: %i\n",
			    sta->addr, arvif->vdev_id, ret);
1558 1559 1560
		return ret;
	}

1561
	peer_arg.peer_reassoc = reassoc;
1562
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1563
	if (ret) {
1564 1565
		ath10k_warn("Peer assoc failed for STA %pM vdev %i: %d\n",
			    sta->addr, arvif->vdev_id, ret);
1566 1567 1568
		return ret;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, sta->addr, &sta->ht_cap);
	if (ret) {
1571
		ath10k_warn("failed to setup peer SMPS for vdev: %d\n", ret);
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		return ret;
	}

1575 1576 1577 1578 1579 1580 1581 1582 1583 1584
	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;
		}
	}

1585 1586
	ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
	if (ret) {
1587 1588
		ath10k_warn("could not install peer wep keys for vdev %i: %d\n",
			    arvif->vdev_id, ret);
1589 1590 1591
		return ret;
	}

1592 1593
	ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
	if (ret) {
1594 1595
		ath10k_warn("could not set qos params for STA %pM for vdev %i: %d\n",
			    sta->addr, arvif->vdev_id, ret);
1596 1597 1598
		return ret;
	}

1599 1600 1601 1602 1603 1604 1605 1606
	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);

1609 1610 1611 1612 1613 1614 1615 1616 1617 1618
	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;
		}
	}

1619 1620
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
1621 1622
		ath10k_warn("could not clear all peer wep keys for vdev %i: %d\n",
			    arvif->vdev_id, ret);
1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645
		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);

1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683
	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 =
1684
				!(channel->flags & IEEE80211_CHAN_NO_IR);
1685 1686 1687 1688

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

1689 1690 1691
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

1692
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
1693 1694 1695
			ch->passive = passive;

			ch->freq = channel->center_freq;
1696
			ch->min_power = 0;
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			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;
1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713
			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,
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				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728
				   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;
}

1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744
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;
}

1745
static void ath10k_regd_update(struct ath10k *ar)
1746 1747 1748
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
1749 1750
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
1751

1752
	lockdep_assert_held(&ar->conf_mutex);
1753 1754 1755 1756 1757 1758

	ret = ath10k_update_channel_list(ar);
	if (ret)
		ath10k_warn("could not update channel list (%d)\n", ret);

	regpair = ar->ath_common.regulatory.regpair;
1759

1760 1761 1762 1763 1764 1765 1766
	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;
	}

1767 1768 1769
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
1770 1771 1772
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
1773
					    regpair->reg_2ghz_ctl,
1774 1775
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
1776 1777
	if (ret)
		ath10k_warn("could not set pdev regdomain (%d)\n", ret);
1778
}
M
Michal Kazior 已提交
1779

1780 1781 1782 1783 1784
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
1785
	bool result;
1786 1787 1788

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

J
Janusz Dziedzic 已提交
1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
	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)
			ath10k_warn("dfs region 0x%X not supported, will trigger radar for every pulse\n",
				    request->dfs_region);
	}

1799 1800 1801
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
1802
	mutex_unlock(&ar->conf_mutex);
1803 1804 1805 1806 1807 1808
}

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

1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822
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;
}

1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835
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;

	if (ar->monitor_enabled)
		return ar->monitor_vdev_id;

	ath10k_warn("could not resolve vdev id\n");
	return 0;
}

1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850
/*
 * 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);
1851 1852 1853
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1854 1855
}

1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879
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) {
		ath10k_warn("could not update wep keyidx (%d)\n", ret);
		return;
	}

	arvif->def_wep_key_idx = keyidx;
}

1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898
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;

1899
	if (key->keyidx == arvif->def_wep_key_idx)
1900 1901
		return;

1902 1903 1904 1905 1906
	/* 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);
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935
}

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;
1936
	int ret = 0;
1937

M
Michal Kazior 已提交
1938 1939 1940 1941 1942 1943
	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;
	}

1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961
	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) {
				ath10k_warn("wmi mgmt_tx queue limit reached\n");
				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)) {
1962 1963
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
1964 1965
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
1966
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
1967
	} else {
1968
		ret = ath10k_htt_tx(&ar->htt, skb);
1969
	}
1970

M
Michal Kazior 已提交
1971
exit:
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
	if (ret) {
		ath10k_warn("tx failed (%d). dropping packet.\n", ret);
		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
2015
		ath10k_dbg(ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2016 2017 2018 2019
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2020
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2021 2022 2023 2024 2025 2026

		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
2027
			/* FIXME: should this use ath10k_warn()? */
2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
			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)
				ath10k_warn("peer %pM on vdev %d not created (%d)\n",
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2039
		reinit_completion(&ar->offchan_tx_completed);
2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061
		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)
				ath10k_warn("peer %pM on vdev %d not deleted (%d)\n",
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
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);
2087
		if (ret) {
2088
			ath10k_warn("wmi mgmt_tx failed (%d)\n", ret);
2089 2090
			ieee80211_free_txskb(ar->hw, skb);
		}
2091 2092 2093
	}
}

2094 2095 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 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149
/************/
/* 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;
	}

	ath10k_warn("scan timeout. resetting. fw issue?\n");

	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) {
		ath10k_warn("could not submit wmi stop scan (%d)\n", ret);
2150 2151 2152 2153
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		spin_unlock_bh(&ar->data_lock);
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 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216
		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) {
		ath10k_warn("could not stop scan. its still in progress\n");
		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;
2217
	u8 tid, vdev_id;
2218 2219 2220 2221 2222 2223 2224

	/* 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 */
2225
	tid = ath10k_tx_h_get_tid(hdr);
2226
	vdev_id = ath10k_tx_h_get_vdev_id(ar, info);
2227

2228 2229 2230 2231 2232 2233 2234 2235
	/* 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);
	}
2236

2237
	ATH10K_SKB_CB(skb)->vdev_id = vdev_id;
2238
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
2239 2240 2241 2242 2243
	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;
2244
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259
		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.
 */
2260
void ath10k_halt(struct ath10k *ar)
2261 2262 2263
{
	lockdep_assert_held(&ar->conf_mutex);

2264
	ath10k_stop_cac(ar);
2265 2266
	del_timer_sync(&ar->scan.timeout);
	ath10k_offchan_tx_purge(ar);
2267
	ath10k_mgmt_over_wmi_tx_purge(ar);
2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		del_timer(&ar->scan.timeout);
		ar->scan.in_progress = false;
		ieee80211_scan_completed(ar->hw, true);
	}
	spin_unlock_bh(&ar->data_lock);
}

2281 2282 2283
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
2284
	int ret = 0;
2285

M
Michal Kazior 已提交
2286 2287
	mutex_lock(&ar->conf_mutex);

2288 2289
	if (ar->state != ATH10K_STATE_OFF &&
	    ar->state != ATH10K_STATE_RESTARTING) {
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308
		ret = -EINVAL;
		goto exit;
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
		ath10k_err("could not init hif (%d)\n", ret);
		ar->state = ATH10K_STATE_OFF;
		goto exit;
	}

	ret = ath10k_core_start(ar);
	if (ret) {
		ath10k_err("could not init core (%d)\n", ret);
		ath10k_hif_power_down(ar);
		ar->state = ATH10K_STATE_OFF;
		goto exit;
	}

2309 2310 2311 2312 2313
	if (ar->state == ATH10K_STATE_OFF)
		ar->state = ATH10K_STATE_ON;
	else if (ar->state == ATH10K_STATE_RESTARTING)
		ar->state = ATH10K_STATE_RESTARTED;

2314
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2315 2316 2317 2318
	if (ret)
		ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n",
			    ret);

2319
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2320 2321 2322 2323
	if (ret)
		ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n",
			    ret);

2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340
	/*
	 * 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) {
		ath10k_warn("could not set arp ac override parameter: %d\n",
			    ret);
		goto exit;
	}

2341
	ath10k_regd_update(ar);
2342
	ret = 0;
2343

2344
exit:
M
Michal Kazior 已提交
2345
	mutex_unlock(&ar->conf_mutex);
2346
	return ret;
2347 2348 2349 2350 2351 2352
}

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

M
Michal Kazior 已提交
2353
	mutex_lock(&ar->conf_mutex);
2354 2355 2356
	if (ar->state == ATH10K_STATE_ON ||
	    ar->state == ATH10K_STATE_RESTARTED ||
	    ar->state == ATH10K_STATE_WEDGED)
2357
		ath10k_halt(ar);
2358

2359
	ar->state = ATH10K_STATE_OFF;
M
Michal Kazior 已提交
2360 2361
	mutex_unlock(&ar->conf_mutex);

2362 2363
	ath10k_mgmt_over_wmi_tx_purge(ar);

M
Michal Kazior 已提交
2364
	cancel_work_sync(&ar->offchan_tx_work);
2365
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
2366
	cancel_work_sync(&ar->restart_work);
2367 2368
}

2369
static int ath10k_config_ps(struct ath10k *ar)
2370
{
2371 2372
	struct ath10k_vif *arvif;
	int ret = 0;
2373 2374 2375

	lockdep_assert_held(&ar->conf_mutex);

2376 2377 2378 2379 2380 2381 2382
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
			ath10k_warn("could not setup powersave (%d)\n", ret);
			break;
		}
	}
2383

2384
	return ret;
2385 2386
}

2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478
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;
	bool monitor_was_enabled;
	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. */
	monitor_was_enabled = ar->monitor_enabled;

	if (ar->monitor_enabled)
		ath10k_monitor_stop(ar);

	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) {
			ath10k_warn("could not stop vdev %d (%d)\n",
				    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) {
			ath10k_warn("could not start vdev %d (%d)\n",
				    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) {
			ath10k_warn("could not bring vdev up %d (%d)\n",
				    arvif->vdev_id, ret);
			continue;
		}
	}

	if (monitor_was_enabled)
		ath10k_monitor_start(ar, ar->monitor_vdev_id);
}

2479 2480
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
2481 2482 2483
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;
M
Michal Kazior 已提交
2484
	u32 param;
2485 2486 2487 2488

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2489 2490 2491 2492 2493
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac config channel %d mhz flags 0x%x\n",
			   conf->chandef.chan->center_freq,
			   conf->chandef.chan->flags);

2494 2495 2496
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
2497 2498

		ath10k_config_radar_detection(ar);
2499 2500 2501 2502 2503

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
2504 2505
	}

M
Michal Kazior 已提交
2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522
	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)
			ath10k_warn("mac failed to set 2g txpower %d (%d)\n",
				    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)
			ath10k_warn("mac failed to set 5g txpower %d (%d)\n",
				    hw->conf.power_level, ret);
2523 2524
	}

2525 2526
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
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

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
		if (conf->flags & IEEE80211_CONF_MONITOR)
			ret = ath10k_monitor_create(ar);
		else
			ret = ath10k_monitor_destroy(ar);
	}

	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;
2553
	u32 value;
2554
	int bit;
2555
	u32 vdev_param;
2556 2557 2558

	mutex_lock(&ar->conf_mutex);

2559 2560
	memset(arvif, 0, sizeof(*arvif));

2561 2562 2563
	arvif->ar = ar;
	arvif->vif = vif;

2564
	INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);
2565
	INIT_LIST_HEAD(&arvif->list);
2566

2567 2568 2569
	if ((vif->type == NL80211_IFTYPE_MONITOR) && ar->monitor_present) {
		ath10k_warn("Only one monitor interface allowed\n");
		ret = -EBUSY;
2570
		goto err;
2571 2572 2573 2574 2575
	}

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ret = -EBUSY;
2576
		goto err;
2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608
	}

	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
2609
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d\n",
2610 2611 2612 2613 2614
		   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) {
2615 2616
		ath10k_warn("WMI vdev %i create failed: ret %d\n",
			    arvif->vdev_id, ret);
2617
		goto err;
2618 2619
	}

2620
	ar->free_vdev_map &= ~BIT(arvif->vdev_id);
M
Michal Kazior 已提交
2621
	list_add(&arvif->list, &ar->arvifs);
2622

2623 2624
	vdev_param = ar->wmi.vdev_param->def_keyid;
	ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
2625
					arvif->def_wep_key_idx);
2626
	if (ret) {
2627 2628
		ath10k_warn("Failed to set vdev %i default keyid: %d\n",
			    arvif->vdev_id, ret);
2629 2630
		goto err_vdev_delete;
	}
2631

2632 2633
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2634
					ATH10K_HW_TXRX_NATIVE_WIFI);
2635
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
2636
	if (ret && ret != -EOPNOTSUPP) {
2637 2638
		ath10k_warn("Failed to set vdev %i TX encap: %d\n",
			    arvif->vdev_id, ret);
2639 2640
		goto err_vdev_delete;
	}
2641 2642 2643 2644

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
2645 2646
			ath10k_warn("Failed to create vdev %i peer for AP: %d\n",
				    arvif->vdev_id, ret);
2647
			goto err_vdev_delete;
2648
		}
2649

2650 2651
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
2652 2653
			ath10k_warn("Failed to set vdev %i kickout parameters: %d\n",
				    arvif->vdev_id, ret);
2654 2655
			goto err_peer_delete;
		}
2656 2657 2658 2659 2660 2661 2662
	}

	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);
2663
		if (ret) {
2664 2665
			ath10k_warn("Failed to set vdev %i RX wake policy: %d\n",
				    arvif->vdev_id, ret);
2666 2667
			goto err_peer_delete;
		}
2668 2669 2670 2671 2672

		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);
2673
		if (ret) {
2674 2675
			ath10k_warn("Failed to set vdev %i TX wake thresh: %d\n",
				    arvif->vdev_id, ret);
2676 2677
			goto err_peer_delete;
		}
2678 2679 2680 2681 2682

		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);
2683
		if (ret) {
2684 2685
			ath10k_warn("Failed to set vdev %i PSPOLL count: %d\n",
				    arvif->vdev_id, ret);
2686 2687
			goto err_peer_delete;
		}
2688 2689
	}

2690
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
2691
	if (ret) {
2692 2693
		ath10k_warn("failed to set rts threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);
2694 2695
		goto err_peer_delete;
	}
2696

2697
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
2698
	if (ret) {
2699 2700
		ath10k_warn("failed to set frag threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);
2701 2702
		goto err_peer_delete;
	}
2703

2704 2705 2706 2707
	if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
		ar->monitor_present = true;

	mutex_unlock(&ar->conf_mutex);
2708 2709 2710 2711 2712 2713 2714 2715 2716
	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
2717
	list_del(&arvif->list);
2718 2719 2720 2721

err:
	mutex_unlock(&ar->conf_mutex);

2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733
	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);

2734 2735
	cancel_work_sync(&arvif->wep_key_work);

2736 2737 2738 2739 2740 2741 2742
	spin_lock_bh(&ar->data_lock);
	if (arvif->beacon) {
		dev_kfree_skb_any(arvif->beacon);
		arvif->beacon = NULL;
	}
	spin_unlock_bh(&ar->data_lock);

2743
	ar->free_vdev_map |= 1 << (arvif->vdev_id);
M
Michal Kazior 已提交
2744
	list_del(&arvif->list);
2745 2746 2747 2748

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
		if (ret)
2749 2750
			ath10k_warn("Failed to remove peer for AP vdev %i: %d\n",
				    arvif->vdev_id, ret);
2751 2752 2753 2754

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

2755
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
2756 2757
		   arvif->vdev_id);

2758 2759
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
2760 2761
		ath10k_warn("WMI vdev %i delete failed: %d\n",
			    arvif->vdev_id, ret);
2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797

	if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
		ar->monitor_present = false;

	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;

2798 2799 2800 2801 2802 2803
	/* Monitor must not be started if it wasn't created first.
	 * Promiscuous mode may be started on a non-monitor interface - in
	 * such case the monitor vdev is not created so starting the
	 * monitor makes no sense. Since ath10k uses no special RX filters
	 * (only BSS filter in STA mode) there's no need for any special
	 * action here. */
2804
	if ((ar->filter_flags & FIF_PROMISC_IN_BSS) &&
2805
	    !ar->monitor_enabled && ar->monitor_present) {
K
Kalle Valo 已提交
2806 2807 2808
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d start\n",
			   ar->monitor_vdev_id);

2809 2810 2811 2812
		ret = ath10k_monitor_start(ar, ar->monitor_vdev_id);
		if (ret)
			ath10k_warn("Unable to start monitor mode\n");
	} else if (!(ar->filter_flags & FIF_PROMISC_IN_BSS) &&
2813
		   ar->monitor_enabled && ar->monitor_present) {
K
Kalle Valo 已提交
2814 2815 2816
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d stop\n",
			   ar->monitor_vdev_id);

2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832
		ret = ath10k_monitor_stop(ar);
		if (ret)
			ath10k_warn("Unable to stop monitor mode\n");
	}

	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;
2833
	u32 vdev_param, pdev_param;
2834 2835 2836 2837 2838 2839 2840 2841

	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;
2842 2843
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2844
						arvif->beacon_interval);
K
Kalle Valo 已提交
2845 2846 2847 2848
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

2849
		if (ret)
2850 2851
			ath10k_warn("Failed to set beacon interval for vdev %d: %i\n",
				    arvif->vdev_id, ret);
2852 2853 2854
	}

	if (changed & BSS_CHANGED_BEACON) {
K
Kalle Valo 已提交
2855 2856 2857 2858
		ath10k_dbg(ATH10K_DBG_MAC,
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

2859 2860
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
2861 2862
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
2863 2864
			ath10k_warn("Failed to set beacon mode for vdev %d: %i\n",
				    arvif->vdev_id, ret);
2865 2866
	}

2867
	if (changed & BSS_CHANGED_BEACON_INFO) {
2868 2869
		arvif->dtim_period = info->dtim_period;

K
Kalle Valo 已提交
2870 2871 2872 2873
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

2874 2875
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2876 2877
						arvif->dtim_period);
		if (ret)
2878 2879
			ath10k_warn("Failed to set dtim period for vdev %d: %i\n",
				    arvif->vdev_id, ret);
2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891
	}

	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
2892 2893 2894 2895
			ath10k_dbg(ATH10K_DBG_MAC,
				   "mac vdev %d create peer %pM\n",
				   arvif->vdev_id, info->bssid);

2896 2897 2898
			ret = ath10k_peer_create(ar, arvif->vdev_id,
						 info->bssid);
			if (ret)
2899
				ath10k_warn("Failed to add peer %pM for vdev %d when changing bssid: %i\n",
2900
					    info->bssid, arvif->vdev_id, ret);
2901 2902 2903 2904 2905 2906

			if (vif->type == NL80211_IFTYPE_STATION) {
				/*
				 * this is never erased as we it for crypto key
				 * clearing; this is FW requirement
				 */
2907
				memcpy(arvif->bssid, info->bssid, ETH_ALEN);
2908

K
Kalle Valo 已提交
2909 2910 2911 2912
				ath10k_dbg(ATH10K_DBG_MAC,
					   "mac vdev %d start %pM\n",
					   arvif->vdev_id, info->bssid);

2913
				ret = ath10k_vdev_start(arvif);
2914
				if (ret) {
2915 2916
					ath10k_warn("failed to start vdev %i: %d\n",
						    arvif->vdev_id, ret);
2917
					goto exit;
2918 2919 2920
				}

				arvif->is_started = true;
2921 2922 2923 2924 2925 2926 2927 2928
			}

			/*
			 * 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)
2929
				memcpy(arvif->bssid, info->bssid,
2930 2931 2932 2933 2934 2935 2936 2937
				       ETH_ALEN);
		}
	}

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2938
		arvif->use_cts_prot = info->use_cts_prot;
K
Kalle Valo 已提交
2939
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
2940
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
2941

2942
		ret = ath10k_recalc_rtscts_prot(arvif);
2943
		if (ret)
2944
			ath10k_warn("Failed to recalculate rts/cts prot for vdev %d: %d\n",
2945
				    arvif->vdev_id, ret);
2946 2947 2948 2949 2950 2951 2952 2953 2954 2955
	}

	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
2956 2957 2958
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
			   arvif->vdev_id, slottime);

2959 2960
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2961 2962
						slottime);
		if (ret)
2963 2964
			ath10k_warn("Failed to set erp slot for vdev %d: %i\n",
				    arvif->vdev_id, ret);
2965 2966 2967 2968 2969 2970 2971 2972 2973
	}

	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
2974 2975 2976 2977
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

2978 2979
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2980 2981
						preamble);
		if (ret)
2982 2983
			ath10k_warn("Failed to set preamble for vdev %d: %i\n",
				    arvif->vdev_id, ret);
2984 2985 2986 2987 2988 2989 2990
	}

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

2991
exit:
2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013
	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;
	}

3014 3015
	reinit_completion(&ar->scan.started);
	reinit_completion(&ar->scan.completed);
3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040
	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;
		}
3041 3042
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079
	}

	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) {
		ath10k_warn("could not start hw scan (%d)\n", ret);
		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) {
		ath10k_warn("couldn't abort scan (%d). forcefully sending scan completion to mac80211\n",
			    ret);
		ieee80211_scan_completed(hw, 1 /* aborted */);
	}
	mutex_unlock(&ar->conf_mutex);
}

3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113
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)
3114 3115
		ath10k_warn("failed to set vdev %i group key as default key: %d\n",
			    arvif->vdev_id, ret);
3116 3117
}

3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 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 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174
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) {
			ath10k_warn("cannot install key for non-existent peer %pM\n",
				    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) {
3175 3176
		ath10k_warn("key installation failed for vdev %i peer %pM: %d\n",
			    arvif->vdev_id, peer_addr, ret);
3177 3178 3179
		goto exit;
	}

3180 3181
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197
	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 */
		ath10k_warn("peer %pM disappeared!\n", peer_addr);
	spin_unlock_bh(&ar->data_lock);

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

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 3230 3231 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
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);
	}

3258 3259 3260 3261 3262 3263 3264 3265 3266 3267
	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)
			ath10k_warn("Failed to reassociate station: %pM\n",
				    sta->addr);
	}

3268 3269 3270
	mutex_unlock(&ar->conf_mutex);
}

3271 3272 3273 3274 3275 3276 3277 3278
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);
3279
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3280
	int max_num_peers;
3281 3282
	int ret = 0;

3283 3284 3285 3286 3287 3288 3289
	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);
	}

3290 3291 3292 3293 3294
	/* 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);

3295 3296 3297 3298 3299 3300 3301 3302
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE &&
	    vif->type != NL80211_IFTYPE_STATION) {
		/*
		 * New station addition.
		 */
3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314
		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) {
			ath10k_warn("Number of peers exceeded: peers number %d (max peers %d)\n",
				    ar->num_peers, max_num_peers);
			ret = -ENOBUFS;
			goto exit;
		}

K
Kalle Valo 已提交
3315
		ath10k_dbg(ATH10K_DBG_MAC,
3316 3317
			   "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
3318

3319 3320
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
		if (ret)
3321 3322
			ath10k_warn("Failed to add peer %pM for vdev %d when adding a new sta: %i\n",
				    sta->addr, arvif->vdev_id, ret);
3323 3324 3325 3326 3327
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
K
Kalle Valo 已提交
3328 3329 3330
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
3331 3332
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
3333 3334
			ath10k_warn("Failed to delete peer %pM for vdev %d: %i\n",
				    sta->addr, arvif->vdev_id, ret);
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344

		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
3345 3346 3347
		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM associated\n",
			   sta->addr);

3348
		ret = ath10k_station_assoc(ar, arvif, sta, false);
3349
		if (ret)
3350 3351
			ath10k_warn("Failed to associate station %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
3352 3353 3354 3355 3356 3357 3358
	} 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
3359 3360 3361
		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
			   sta->addr);

3362 3363
		ret = ath10k_station_disassoc(ar, arvif, sta);
		if (ret)
3364 3365
			ath10k_warn("Failed to disassociate station: %pM vdev %i ret %i\n",
				    sta->addr, arvif->vdev_id, ret);
3366
	}
3367
exit:
3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378
	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
3379 3380
	lockdep_assert_held(&ar->conf_mutex);

3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509
	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) {
		ath10k_warn("could not set uapsd params %d\n", ret);
		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)
		ath10k_warn("could not set rx wake param %d\n", ret);

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) {
		ath10k_warn("could not set wmm params %d\n", ret);
		goto exit;
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
		ath10k_warn("could not set sta uapsd %d\n", ret);

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;
	}

3510 3511 3512
	reinit_completion(&ar->scan.started);
	reinit_completion(&ar->scan.completed);
	reinit_completion(&ar->scan.on_channel);
3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570
	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) {
		ath10k_warn("could not start roc scan (%d)\n", ret);
		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) {
		ath10k_warn("could not switch to channel for roc scan\n");
		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.
 */

3571 3572 3573 3574 3575
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
3576

3577
	mutex_lock(&ar->conf_mutex);
3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588
	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) {
			ath10k_warn("could not set rts threshold for vdev %d (%d)\n",
				    arvif->vdev_id, ret);
			break;
		}
	}
3589 3590
	mutex_unlock(&ar->conf_mutex);

3591
	return ret;
3592 3593
}

3594
static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3595
{
3596 3597 3598
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
M
Michal Kazior 已提交
3599

3600
	mutex_lock(&ar->conf_mutex);
3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611
	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) {
			ath10k_warn("could not set fragmentation threshold for vdev %d (%d)\n",
				    arvif->vdev_id, ret);
			break;
		}
	}
3612 3613
	mutex_unlock(&ar->conf_mutex);

3614
	return ret;
3615 3616 3617 3618 3619
}

static void ath10k_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
{
	struct ath10k *ar = hw->priv;
3620
	bool skip;
3621 3622 3623 3624 3625 3626 3627
	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
3628 3629
	mutex_lock(&ar->conf_mutex);

3630 3631 3632
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

3633
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
3634
			bool empty;
3635

3636
			spin_lock_bh(&ar->htt.tx_lock);
3637
			empty = (ar->htt.num_pending_tx == 0);
3638
			spin_unlock_bh(&ar->htt.tx_lock);
3639 3640 3641 3642

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

			(empty || skip);
3643
		}), ATH10K_FLUSH_TIMEOUT_HZ);
3644 3645

	if (ret <= 0 || skip)
3646 3647
		ath10k_warn("tx not flushed (skip %i ar-state %i): %i\n",
			    skip, ar->state, ret);
M
Michal Kazior 已提交
3648

3649
skip:
M
Michal Kazior 已提交
3650
	mutex_unlock(&ar->conf_mutex);
3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661
}

/* 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
3662 3663 3664 3665 3666 3667 3668
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

3669 3670
	mutex_lock(&ar->conf_mutex);

3671
	ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
M
Michal Kazior 已提交
3672
	if (ret) {
3673 3674
		if (ret == -ETIMEDOUT)
			goto resume;
3675 3676
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3677 3678 3679 3680 3681 3682 3683 3684
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
		ath10k_warn("could not suspend hif (%d)\n", ret);
		goto resume;
	}

3685 3686
	ret = 0;
	goto exit;
M
Michal Kazior 已提交
3687 3688 3689 3690
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
		ath10k_warn("could not resume target (%d)\n", ret);
3691 3692 3693 3694 3695

	ret = 1;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3696 3697 3698 3699 3700 3701 3702
}

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

3703 3704
	mutex_lock(&ar->conf_mutex);

M
Michal Kazior 已提交
3705 3706 3707
	ret = ath10k_hif_resume(ar);
	if (ret) {
		ath10k_warn("could not resume hif (%d)\n", ret);
3708 3709
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3710 3711 3712 3713 3714
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
		ath10k_warn("could not resume target (%d)\n", ret);
3715 3716
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
3717 3718
	}

3719 3720 3721 3722
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
3723 3724 3725
}
#endif

3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741
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
3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776
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;
}

3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 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 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
/* 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,
4013 4014
				       u8 fixed_nss,
				       u8 force_sgi)
4015 4016 4017 4018 4019 4020 4021 4022
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
4023 4024
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
4025 4026 4027 4028 4029
		goto exit;

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

4030 4031 4032
	if (force_sgi)
		ath10k_dbg(ATH10K_DBG_MAC, "mac force sgi\n");

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
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
		ath10k_warn("Could not set fixed_rate param 0x%02x: %d\n",
			    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) {
		ath10k_warn("Could not set fixed_nss param %d: %d\n",
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
		ath10k_warn("Could not set sgi param %d: %d\n",
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084
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;
4085 4086 4087 4088 4089
	u8 force_sgi;

	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
4090 4091 4092 4093 4094 4095 4096 4097

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

4098 4099 4100 4101 4102 4103 4104
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
		ath10k_warn("Could not force SGI usage for default rate settings\n");
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
4105 4106
}

M
Michal Kazior 已提交
4107 4108 4109 4110 4111 4112 4113 4114
static void ath10k_channel_switch_beacon(struct ieee80211_hw *hw,
					 struct ieee80211_vif *vif,
					 struct cfg80211_chan_def *chandef)
{
	/* there's no need to do anything here. vif->csa_active is enough */
	return;
}

4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187
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:
			ath10k_warn("mac sta rc update for %pM: invalid bw %d\n",
				    sta->addr, sta->bandwidth);
			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:
			ath10k_warn("mac sta rc update for %pM: invalid smps: %d\n",
				    sta->addr, sta->smps_mode);
			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);
}

4188 4189 4190 4191 4192 4193 4194 4195 4196 4197
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;
}

4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217
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,
4218
	.restart_complete		= ath10k_restart_complete,
M
Michal Kazior 已提交
4219
	.get_survey			= ath10k_get_survey,
4220
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
M
Michal Kazior 已提交
4221
	.channel_switch_beacon		= ath10k_channel_switch_beacon,
4222
	.sta_rc_update			= ath10k_sta_rc_update,
4223
	.get_tsf			= ath10k_get_tsf,
M
Michal Kazior 已提交
4224 4225 4226 4227
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
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 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271
};

#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[] = {
4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295
	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),
4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344
};

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)
4345 4346 4347 4348 4349 4350 4351 4352 4353
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
4354 4355
};

4356
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370
	{
	.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,
	},
4371 4372 4373
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4374
	{
4375 4376
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4377 4378 4379
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
4380
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
4381 4382 4383 4384 4385
		.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
4386
	},
4387 4388 4389 4390 4391 4392
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
4393
	int i;
4394 4395 4396 4397

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

4398 4399 4400 4401 4402 4403 4404
	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);
	}
4405 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 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466

	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;

4467
	for (i = 0; i < ar->num_rf_chains; i++)
4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499
		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) {
4500
		ath10k_warn("No VIF found for vdev %d\n", vdev_id);
4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525
		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
4526 4527 4528 4529
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547

		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
4548 4549
			ret = -ENOMEM;
			goto err_free;
4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564
		}

		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) |
4565 4566 4567 4568 4569 4570
		BIT(NL80211_IFTYPE_AP);

	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);
4571 4572 4573 4574 4575 4576 4577 4578 4579 4580

	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 |
			IEEE80211_HW_WANT_MONITOR_VIF |
4581 4582
			IEEE80211_HW_AP_LINK_PS |
			IEEE80211_HW_SPECTRUM_MGMT;
4583

4584 4585 4586 4587
	/* 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;

4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599
	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);
4600
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
4601 4602 4603 4604

	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
4605
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
4606 4607 4608 4609 4610 4611 4612 4613 4614
	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;

4615 4616 4617 4618 4619 4620 4621 4622 4623
	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);
	}
4624

4625 4626
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
4627 4628 4629 4630 4631 4632 4633 4634 4635 4636
	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)
			ath10k_warn("dfs pattern detector init failed\n");
	}

4637 4638 4639
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
4640
		ath10k_err("Regulatory initialization failed: %i\n", ret);
M
Michal Kazior 已提交
4641
		goto err_free;
4642 4643 4644 4645 4646
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
		ath10k_err("ieee80211 registration failed: %d\n", ret);
M
Michal Kazior 已提交
4647
		goto err_free;
4648 4649 4650 4651 4652 4653
	}

	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
4654
			goto err_unregister;
4655 4656 4657
	}

	return 0;
M
Michal Kazior 已提交
4658 4659

err_unregister:
4660
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
4661 4662 4663 4664
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

4665 4666 4667 4668 4669 4670 4671
	return ret;
}

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

J
Janusz Dziedzic 已提交
4672 4673 4674
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

4675 4676 4677 4678 4679
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}