cfg.c 35.8 KB
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/*
 * mac80211 configuration hooks for cfg80211
 *
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 * Copyright 2006, 2007	Johannes Berg <johannes@sipsolutions.net>
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 *
 * This file is GPLv2 as found in COPYING.
 */

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#include <linux/ieee80211.h>
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#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <linux/rcupdate.h>
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#include <net/cfg80211.h>
#include "ieee80211_i.h"
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#include "driver-ops.h"
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#include "cfg.h"
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#include "rate.h"
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#include "mesh.h"

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static bool nl80211_type_check(enum nl80211_iftype type)
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{
	switch (type) {
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_MONITOR:
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#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
#endif
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	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
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	case NL80211_IFTYPE_WDS:
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		return true;
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	default:
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		return false;
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	}
}

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static bool nl80211_params_check(enum nl80211_iftype type,
				 struct vif_params *params)
{
	if (!nl80211_type_check(type))
		return false;

	return true;
}

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static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
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			       enum nl80211_iftype type, u32 *flags,
			       struct vif_params *params)
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{
	struct ieee80211_local *local = wiphy_priv(wiphy);
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	struct net_device *dev;
	struct ieee80211_sub_if_data *sdata;
	int err;
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	if (!nl80211_params_check(type, params))
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		return -EINVAL;

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	err = ieee80211_if_add(local, name, &dev, type, params);
	if (err || type != NL80211_IFTYPE_MONITOR || !flags)
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		return err;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	sdata->u.mntr_flags = *flags;
	return 0;
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}

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static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
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{
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	ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
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	return 0;
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}

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static int ieee80211_change_iface(struct wiphy *wiphy,
				  struct net_device *dev,
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				  enum nl80211_iftype type, u32 *flags,
				  struct vif_params *params)
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{
	struct ieee80211_sub_if_data *sdata;
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	int ret;
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	if (netif_running(dev))
		return -EBUSY;

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	if (!nl80211_params_check(type, params))
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		return -EINVAL;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	ret = ieee80211_if_change_type(sdata, type);
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	if (ret)
		return ret;
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	if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
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		ieee80211_sdata_set_mesh_id(sdata,
					    params->mesh_id_len,
					    params->mesh_id);
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	if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
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		return 0;

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	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
		rcu_assign_pointer(sdata->u.vlan.sta, NULL);
	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

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	sdata->u.mntr_flags = *flags;
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	return 0;
}

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static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, const u8 *mac_addr,
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			     struct key_params *params)
{
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta = NULL;
	enum ieee80211_key_alg alg;
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	struct ieee80211_key *key;
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	int err;
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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		alg = ALG_WEP;
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		alg = ALG_TKIP;
		break;
	case WLAN_CIPHER_SUITE_CCMP:
		alg = ALG_CCMP;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
		alg = ALG_AES_CMAC;
		break;
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	default:
		return -EINVAL;
	}

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	key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key,
				  params->seq_len, params->seq);
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	if (!key)
		return -ENOMEM;

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	rcu_read_lock();

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	if (mac_addr) {
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		sta = sta_info_get(sdata, mac_addr);
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		if (!sta) {
			ieee80211_key_free(key);
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			err = -ENOENT;
			goto out_unlock;
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		}
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	}

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	ieee80211_key_link(key, sdata, sta);

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	err = 0;
 out_unlock:
	rcu_read_unlock();

	return err;
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}

static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, const u8 *mac_addr)
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{
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	int ret;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	rcu_read_lock();

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	if (mac_addr) {
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		ret = -ENOENT;

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		sta = sta_info_get(sdata, mac_addr);
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		if (!sta)
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			goto out_unlock;
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		if (sta->key) {
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			ieee80211_key_free(sta->key);
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			WARN_ON(sta->key);
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			ret = 0;
		}
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		goto out_unlock;
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	}

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	if (!sdata->keys[key_idx]) {
		ret = -ENOENT;
		goto out_unlock;
	}
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	ieee80211_key_free(sdata->keys[key_idx]);
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	WARN_ON(sdata->keys[key_idx]);
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	ret = 0;
 out_unlock:
	rcu_read_unlock();

	return ret;
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}

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static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, const u8 *mac_addr, void *cookie,
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			     void (*callback)(void *cookie,
					      struct key_params *params))
{
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	struct ieee80211_sub_if_data *sdata;
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	struct sta_info *sta = NULL;
	u8 seq[6] = {0};
	struct key_params params;
	struct ieee80211_key *key;
	u32 iv32;
	u16 iv16;
	int err = -ENOENT;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	rcu_read_lock();

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	if (mac_addr) {
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		sta = sta_info_get(sdata, mac_addr);
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		if (!sta)
			goto out;

		key = sta->key;
	} else
		key = sdata->keys[key_idx];

	if (!key)
		goto out;

	memset(&params, 0, sizeof(params));

	switch (key->conf.alg) {
	case ALG_TKIP:
		params.cipher = WLAN_CIPHER_SUITE_TKIP;

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		iv32 = key->u.tkip.tx.iv32;
		iv16 = key->u.tkip.tx.iv16;
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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
			drv_get_tkip_seq(sdata->local,
					 key->conf.hw_key_idx,
					 &iv32, &iv16);
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		seq[0] = iv16 & 0xff;
		seq[1] = (iv16 >> 8) & 0xff;
		seq[2] = iv32 & 0xff;
		seq[3] = (iv32 >> 8) & 0xff;
		seq[4] = (iv32 >> 16) & 0xff;
		seq[5] = (iv32 >> 24) & 0xff;
		params.seq = seq;
		params.seq_len = 6;
		break;
	case ALG_CCMP:
		params.cipher = WLAN_CIPHER_SUITE_CCMP;
		seq[0] = key->u.ccmp.tx_pn[5];
		seq[1] = key->u.ccmp.tx_pn[4];
		seq[2] = key->u.ccmp.tx_pn[3];
		seq[3] = key->u.ccmp.tx_pn[2];
		seq[4] = key->u.ccmp.tx_pn[1];
		seq[5] = key->u.ccmp.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
	case ALG_WEP:
		if (key->conf.keylen == 5)
			params.cipher = WLAN_CIPHER_SUITE_WEP40;
		else
			params.cipher = WLAN_CIPHER_SUITE_WEP104;
		break;
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	case ALG_AES_CMAC:
		params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
		seq[0] = key->u.aes_cmac.tx_pn[5];
		seq[1] = key->u.aes_cmac.tx_pn[4];
		seq[2] = key->u.aes_cmac.tx_pn[3];
		seq[3] = key->u.aes_cmac.tx_pn[2];
		seq[4] = key->u.aes_cmac.tx_pn[1];
		seq[5] = key->u.aes_cmac.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
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	}

	params.key = key->conf.key;
	params.key_len = key->conf.keylen;

	callback(cookie, &params);
	err = 0;

 out:
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	rcu_read_unlock();
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	return err;
}

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static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
					u8 key_idx)
{
	struct ieee80211_sub_if_data *sdata;

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	rcu_read_lock();

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	ieee80211_set_default_key(sdata, key_idx);

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	rcu_read_unlock();

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	return 0;
}

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static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
					     struct net_device *dev,
					     u8 key_idx)
{
	struct ieee80211_sub_if_data *sdata;

	rcu_read_lock();

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	ieee80211_set_default_mgmt_key(sdata, key_idx);

	rcu_read_unlock();

	return 0;
}

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static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
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	struct ieee80211_sub_if_data *sdata = sta->sdata;
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	sinfo->generation = sdata->local->sta_generation;

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	sinfo->filled = STATION_INFO_INACTIVE_TIME |
			STATION_INFO_RX_BYTES |
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			STATION_INFO_TX_BYTES |
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			STATION_INFO_RX_PACKETS |
			STATION_INFO_TX_PACKETS |
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			STATION_INFO_TX_BITRATE;
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	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
	sinfo->rx_bytes = sta->rx_bytes;
	sinfo->tx_bytes = sta->tx_bytes;
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	sinfo->rx_packets = sta->rx_packets;
	sinfo->tx_packets = sta->tx_packets;
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	if (sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
		sinfo->filled |= STATION_INFO_SIGNAL;
		sinfo->signal = (s8)sta->last_signal;
	}

	sinfo->txrate.flags = 0;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;

	if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
		struct ieee80211_supported_band *sband;
		sband = sta->local->hw.wiphy->bands[
				sta->local->hw.conf.channel->band];
		sinfo->txrate.legacy =
			sband->bitrates[sta->last_tx_rate.idx].bitrate;
	} else
		sinfo->txrate.mcs = sta->last_tx_rate.idx;

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	if (ieee80211_vif_is_mesh(&sdata->vif)) {
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#ifdef CONFIG_MAC80211_MESH
		sinfo->filled |= STATION_INFO_LLID |
				 STATION_INFO_PLID |
				 STATION_INFO_PLINK_STATE;

		sinfo->llid = le16_to_cpu(sta->llid);
		sinfo->plid = le16_to_cpu(sta->plid);
		sinfo->plink_state = sta->plink_state;
#endif
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	}
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}


static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *mac, struct station_info *sinfo)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct sta_info *sta;
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	int ret = -ENOENT;

	rcu_read_lock();
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	sta = sta_info_get_by_idx(sdata, idx);
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	if (sta) {
		ret = 0;
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		memcpy(mac, sta->sta.addr, ETH_ALEN);
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		sta_set_sinfo(sta, sinfo);
	}
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	rcu_read_unlock();
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	return ret;
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}

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static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
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				 u8 *mac, struct station_info *sinfo)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct sta_info *sta;
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	int ret = -ENOENT;
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	rcu_read_lock();
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	sta = sta_info_get(sdata, mac);
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	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

	rcu_read_unlock();

	return ret;
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}

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/*
 * This handles both adding a beacon and setting new beacon info
 */
static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
				   struct beacon_parameters *params)
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
	int size;
	int err = -EINVAL;

	old = sdata->u.ap.beacon;

	/* head must not be zero-length */
	if (params->head && !params->head_len)
		return -EINVAL;

	/*
	 * This is a kludge. beacon interval should really be part
	 * of the beacon information.
	 */
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	if (params->interval &&
	    (sdata->vif.bss_conf.beacon_int != params->interval)) {
		sdata->vif.bss_conf.beacon_int = params->interval;
		ieee80211_bss_info_change_notify(sdata,
						 BSS_CHANGED_BEACON_INT);
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	}

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
		return err;

	/* sorry, no way to start beaconing without dtim period */
	if (!params->dtim_period && !old)
		return err;

	/* new or old head? */
	if (params->head)
		new_head_len = params->head_len;
	else
		new_head_len = old->head_len;

	/* new or old tail? */
	if (params->tail || !old)
		/* params->tail_len will be zero for !params->tail */
		new_tail_len = params->tail_len;
	else
		new_tail_len = old->tail_len;

	size = sizeof(*new) + new_head_len + new_tail_len;

	new = kzalloc(size, GFP_KERNEL);
	if (!new)
		return -ENOMEM;

	/* start filling the new info now */

	/* new or old dtim period? */
	if (params->dtim_period)
		new->dtim_period = params->dtim_period;
	else
		new->dtim_period = old->dtim_period;

	/*
	 * pointers go into the block we allocated,
	 * memory is | beacon_data | head | tail |
	 */
	new->head = ((u8 *) new) + sizeof(*new);
	new->tail = new->head + new_head_len;
	new->head_len = new_head_len;
	new->tail_len = new_tail_len;

	/* copy in head */
	if (params->head)
		memcpy(new->head, params->head, new_head_len);
	else
		memcpy(new->head, old->head, new_head_len);

	/* copy in optional tail */
	if (params->tail)
		memcpy(new->tail, params->tail, new_tail_len);
	else
		if (old)
			memcpy(new->tail, old->tail, new_tail_len);

	rcu_assign_pointer(sdata->u.ap.beacon, new);

	synchronize_rcu();

	kfree(old);

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	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
						BSS_CHANGED_BEACON);
	return 0;
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}

static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = sdata->u.ap.beacon;

	if (old)
		return -EALREADY;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = sdata->u.ap.beacon;

	if (!old)
		return -ENOENT;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = sdata->u.ap.beacon;

	if (!old)
		return -ENOENT;

	rcu_assign_pointer(sdata->u.ap.beacon, NULL);
	synchronize_rcu();
	kfree(old);

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	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
	return 0;
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}

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/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
	u8 da[ETH_ALEN];	/* broadcast */
	u8 sa[ETH_ALEN];	/* STA addr */
	__be16 len;		/* 6 */
	u8 dsap;		/* 0 */
	u8 ssap;		/* 0 */
	u8 control;
	u8 xid_info[3];
} __attribute__ ((packed));

static void ieee80211_send_layer2_update(struct sta_info *sta)
{
	struct iapp_layer2_update *msg;
	struct sk_buff *skb;

	/* Send Level 2 Update Frame to update forwarding tables in layer 2
	 * bridge devices */

	skb = dev_alloc_skb(sizeof(*msg));
	if (!skb)
		return;
	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));

	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */

	memset(msg->da, 0xff, ETH_ALEN);
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	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
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	msg->len = htons(6);
	msg->dsap = 0;
	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
	msg->control = 0xaf;	/* XID response lsb.1111F101.
				 * F=0 (no poll command; unsolicited frame) */
	msg->xid_info[0] = 0x81;	/* XID format identifier */
	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */

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	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
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	memset(skb->cb, 0, sizeof(skb->cb));
	netif_rx(skb);
}

static void sta_apply_parameters(struct ieee80211_local *local,
				 struct sta_info *sta,
				 struct station_parameters *params)
{
	u32 rates;
	int i, j;
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	struct ieee80211_supported_band *sband;
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	struct ieee80211_sub_if_data *sdata = sta->sdata;
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	u32 mask, set;
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	sband = local->hw.wiphy->bands[local->oper_channel->band];

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	spin_lock_bh(&sta->lock);
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
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	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
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		sta->flags &= ~WLAN_STA_AUTHORIZED;
644
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
645
			sta->flags |= WLAN_STA_AUTHORIZED;
646
	}
647

648
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
649
		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
650
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
651
			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
652
	}
653

654
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
655
		sta->flags &= ~WLAN_STA_WME;
656
		if (set & BIT(NL80211_STA_FLAG_WME))
657
			sta->flags |= WLAN_STA_WME;
658
	}
659

660
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
661
		sta->flags &= ~WLAN_STA_MFP;
662
		if (set & BIT(NL80211_STA_FLAG_MFP))
663
			sta->flags |= WLAN_STA_MFP;
664
	}
665
	spin_unlock_bh(&sta->lock);
666

667 668 669 670 671 672 673
	/*
	 * cfg80211 validates this (1-2007) and allows setting the AID
	 * only when creating a new station entry
	 */
	if (params->aid)
		sta->sta.aid = params->aid;

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	/*
	 * FIXME: updating the following information is racy when this
	 *	  function is called from ieee80211_change_station().
	 *	  However, all this information should be static so
	 *	  maybe we should just reject attemps to change it.
	 */

681 682 683 684 685
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
686

687 688
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
689 690
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
691 692 693
					rates |= BIT(j);
			}
		}
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		sta->sta.supp_rates[local->oper_channel->band] = rates;
695
	}
696

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	if (params->ht_capa)
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		ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
						  params->ht_capa,
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						  &sta->sta.ht_cap);
701

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	if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
703 704 705 706 707 708 709 710
		switch (params->plink_action) {
		case PLINK_ACTION_OPEN:
			mesh_plink_open(sta);
			break;
		case PLINK_ACTION_BLOCK:
			mesh_plink_block(sta);
			break;
		}
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	}
712 713 714 715 716
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
717
	struct ieee80211_local *local = wiphy_priv(wiphy);
718 719
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
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	int err;
721
	int layer2_update;
722 723 724 725

	if (params->vlan) {
		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

726 727
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
728 729 730 731
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

732
	if (compare_ether_addr(mac, sdata->vif.addr) == 0)
733 734 735 736 737 738
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
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739 740
	if (!sta)
		return -ENOMEM;
741 742 743 744 745

	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;

	sta_apply_parameters(local, sta, params);

746
	rate_control_rate_init(sta);
747

748 749 750
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

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	rcu_read_lock();

	err = sta_info_insert(sta);
	if (err) {
		rcu_read_unlock();
		return err;
	}

759
	if (layer2_update)
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		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

764 765 766 767 768 769
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
770 771
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
772 773
	struct sta_info *sta;

774 775
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

776
	if (mac) {
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		rcu_read_lock();

779
		sta = sta_info_get(sdata, mac);
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780 781
		if (!sta) {
			rcu_read_unlock();
782
			return -ENOENT;
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783
		}
784

785
		sta_info_unlink(&sta);
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		rcu_read_unlock();

788
		sta_info_destroy(sta);
789
	} else
790
		sta_info_flush(local, sdata);
791 792 793 794 795 796 797 798 799

	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
800
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
801
	struct ieee80211_local *local = wiphy_priv(wiphy);
802 803 804
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;

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	rcu_read_lock();

807
	sta = sta_info_get(sdata, mac);
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808 809
	if (!sta) {
		rcu_read_unlock();
810
		return -ENOENT;
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	}
812

813
	if (params->vlan && params->vlan != sta->sdata->dev) {
814 815
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

816 817
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
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			rcu_read_unlock();
819
			return -EINVAL;
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		}
821

822
		if (params->vlan->ieee80211_ptr->use_4addr) {
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			if (vlansdata->u.vlan.sta) {
				rcu_read_unlock();
825
				return -EBUSY;
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			}
827 828 829 830

			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
		}

831
		sta->sdata = vlansdata;
832 833 834 835 836
		ieee80211_send_layer2_update(sta);
	}

	sta_apply_parameters(local, sta, params);

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	rcu_read_unlock();

839 840 841
	return 0;
}

842 843 844 845
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
846
	struct ieee80211_sub_if_data *sdata;
847 848 849 850
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

851 852
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

853
	rcu_read_lock();
854
	sta = sta_info_get(sdata, next_hop);
855 856
	if (!sta) {
		rcu_read_unlock();
857
		return -ENOENT;
858
	}
859

860
	err = mesh_path_add(dst, sdata);
861 862
	if (err) {
		rcu_read_unlock();
863
		return err;
864
	}
865

866
	mpath = mesh_path_lookup(dst, sdata);
867 868 869 870 871
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
872

873 874 875 876 877 878 879
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
880 881
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

882
	if (dst)
883
		return mesh_path_del(dst, sdata);
884

885
	mesh_path_flush(sdata);
886 887 888 889 890 891 892
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
893
	struct ieee80211_sub_if_data *sdata;
894 895 896
	struct mesh_path *mpath;
	struct sta_info *sta;

897 898
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

899 900
	rcu_read_lock();

901
	sta = sta_info_get(sdata, next_hop);
902 903
	if (!sta) {
		rcu_read_unlock();
904
		return -ENOENT;
905
	}
906

907
	mpath = mesh_path_lookup(dst, sdata);
908 909 910 911 912 913
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
914

915 916 917 918 919 920 921 922
	rcu_read_unlock();
	return 0;
}

static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
			    struct mpath_info *pinfo)
{
	if (mpath->next_hop)
923
		memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
924 925 926
	else
		memset(next_hop, 0, ETH_ALEN);

927 928
	pinfo->generation = mesh_paths_generation;

929
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
930
			MPATH_INFO_SN |
931 932 933 934 935 936 937
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
938
	pinfo->sn = mpath->sn;
939 940 941 942 943 944 945 946 947 948 949
	pinfo->metric = mpath->metric;
	if (time_before(jiffies, mpath->exp_time))
		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
	pinfo->discovery_timeout =
			jiffies_to_msecs(mpath->discovery_timeout);
	pinfo->discovery_retries = mpath->discovery_retries;
	pinfo->flags = 0;
	if (mpath->flags & MESH_PATH_ACTIVE)
		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
950 951
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
952 953 954 955 956 957 958 959 960 961 962 963
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;

	pinfo->flags = mpath->flags;
}

static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)

{
964
	struct ieee80211_sub_if_data *sdata;
965 966
	struct mesh_path *mpath;

967 968
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

969
	rcu_read_lock();
970
	mpath = mesh_path_lookup(dst, sdata);
971 972 973 974 975 976 977 978 979 980 981 982 983 984
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *dst, u8 *next_hop,
				 struct mpath_info *pinfo)
{
985
	struct ieee80211_sub_if_data *sdata;
986 987
	struct mesh_path *mpath;

988 989
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

990
	rcu_read_lock();
991
	mpath = mesh_path_lookup_by_idx(idx, sdata);
992 993 994 995 996 997 998 999 1000
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}
1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023

static int ieee80211_get_mesh_params(struct wiphy *wiphy,
				struct net_device *dev,
				struct mesh_config *conf)
{
	struct ieee80211_sub_if_data *sdata;
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
	return 0;
}

static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
{
	return (mask >> (parm-1)) & 0x1;
}

static int ieee80211_set_mesh_params(struct wiphy *wiphy,
				struct net_device *dev,
				const struct mesh_config *nconf, u32 mask)
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1024 1025
	struct ieee80211_if_mesh *ifmsh;

1026
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1027
	ifmsh = &sdata->u.mesh;
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061

	/* Set the config options which we are interested in setting */
	conf = &(sdata->u.mesh.mshcfg);
	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
		conf->dot11MeshTTL = nconf->dot11MeshTTL;
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
		conf->auto_open_plinks = nconf->auto_open_plinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
		conf->dot11MeshHWMPmaxPREQretries =
			nconf->dot11MeshHWMPmaxPREQretries;
	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
		conf->path_refresh_time = nconf->path_refresh_time;
	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
		conf->min_discovery_timeout = nconf->min_discovery_timeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathTimeout =
			nconf->dot11MeshHWMPactivePathTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPpreqMinInterval =
			nconf->dot11MeshHWMPpreqMinInterval;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1062 1063 1064 1065
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1066 1067 1068
	return 0;
}

1069 1070
#endif

1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
	struct ieee80211_sub_if_data *sdata;
	u32 changed = 0;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (params->use_cts_prot >= 0) {
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		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1082 1083 1084
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
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		sdata->vif.bss_conf.use_short_preamble =
1086 1087 1088 1089
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
	if (params->use_short_slot_time >= 0) {
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		sdata->vif.bss_conf.use_short_slot =
1091 1092 1093 1094
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
	if (params->basic_rates) {
		int i, j;
		u32 rates = 0;
		struct ieee80211_local *local = wiphy_priv(wiphy);
		struct ieee80211_supported_band *sband =
			wiphy->bands[local->oper_channel->band];

		for (i = 0; i < params->basic_rates_len; i++) {
			int rate = (params->basic_rates[i] & 0x7f) * 5;
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
					rates |= BIT(j);
			}
		}
		sdata->vif.bss_conf.basic_rates = rates;
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1113 1114 1115 1116 1117
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
static int ieee80211_set_txq_params(struct wiphy *wiphy,
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_tx_queue_params p;

	if (!local->ops->conf_tx)
		return -EOPNOTSUPP;

	memset(&p, 0, sizeof(p));
	p.aifs = params->aifs;
	p.cw_max = params->cwmax;
	p.cw_min = params->cwmin;
	p.txop = params->txop;
1132
	if (drv_conf_tx(local, params->queue, &p)) {
1133
		printk(KERN_DEBUG "%s: failed to set TX queue "
1134 1135
		       "parameters for queue %d\n",
		       wiphy_name(local->hw.wiphy), params->queue);
1136 1137 1138 1139 1140 1141
		return -EINVAL;
	}

	return 0;
}

1142 1143
static int ieee80211_set_channel(struct wiphy *wiphy,
				 struct ieee80211_channel *chan,
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				 enum nl80211_channel_type channel_type)
1145 1146 1147 1148
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	local->oper_channel = chan;
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	local->oper_channel_type = channel_type;
1150 1151 1152 1153

	return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
}

1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
#ifdef CONFIG_PM
static int ieee80211_suspend(struct wiphy *wiphy)
{
	return __ieee80211_suspend(wiphy_priv(wiphy));
}

static int ieee80211_resume(struct wiphy *wiphy)
{
	return __ieee80211_resume(wiphy_priv(wiphy));
}
#else
#define ieee80211_suspend NULL
#define ieee80211_resume NULL
#endif

1169 1170 1171 1172 1173 1174 1175 1176 1177 1178
static int ieee80211_scan(struct wiphy *wiphy,
			  struct net_device *dev,
			  struct cfg80211_scan_request *req)
{
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type != NL80211_IFTYPE_STATION &&
	    sdata->vif.type != NL80211_IFTYPE_ADHOC &&
1179 1180
	    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
	    (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
1181 1182 1183 1184 1185
		return -EOPNOTSUPP;

	return ieee80211_request_scan(sdata, req);
}

1186 1187 1188
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
1189
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1190 1191 1192 1193 1194
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
1195
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1196 1197 1198
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
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			    struct cfg80211_deauth_request *req,
			    void *cookie)
1201
{
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	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
				    req, cookie);
1204 1205 1206
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
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			      struct cfg80211_disassoc_request *req,
			      void *cookie)
1209
{
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	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
				      req, cookie);
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}

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static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	return ieee80211_ibss_join(sdata, params);
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	return ieee80211_ibss_leave(sdata);
}

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static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
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	int err;
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	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
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		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
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		if (err)
			return err;
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	}

	if (changed & WIPHY_PARAM_RETRY_SHORT)
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
	if (changed & WIPHY_PARAM_RETRY_LONG)
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

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static int ieee80211_set_tx_power(struct wiphy *wiphy,
				  enum tx_power_setting type, int dbm)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_channel *chan = local->hw.conf.channel;
	u32 changes = 0;

	switch (type) {
	case TX_POWER_AUTOMATIC:
		local->user_power_level = -1;
		break;
	case TX_POWER_LIMITED:
		if (dbm < 0)
			return -EINVAL;
		local->user_power_level = dbm;
		break;
	case TX_POWER_FIXED:
		if (dbm < 0)
			return -EINVAL;
		/* TODO: move to cfg80211 when it knows the channel */
		if (dbm > chan->max_power)
			return -EINVAL;
		local->user_power_level = dbm;
		break;
	}

	ieee80211_hw_config(local, changes);

	return 0;
}

static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	*dbm = local->hw.conf.power_level;

	return 0;
}

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static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
				  u8 *addr)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);

	return 0;
}

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static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

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#ifdef CONFIG_NL80211_TESTMODE
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static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
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{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (!local->ops->testmode_cmd)
		return -EOPNOTSUPP;

	return local->ops->testmode_cmd(&local->hw, data, len);
}
#endif

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int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
			     enum ieee80211_smps_mode smps_mode)
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

	old_req = sdata->u.mgd.req_smps;
	sdata->u.mgd.req_smps = smps_mode;

	if (old_req == smps_mode &&
	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
		return 0;

	/*
	 * If not associated, or current association is not an HT
	 * association, there's no need to send an action frame.
	 */
	if (!sdata->u.mgd.associated ||
	    sdata->local->oper_channel_type == NL80211_CHAN_NO_HT) {
		mutex_lock(&sdata->local->iflist_mtx);
		ieee80211_recalc_smps(sdata->local, sdata);
		mutex_unlock(&sdata->local->iflist_mtx);
		return 0;
	}

	ap = sdata->u.mgd.associated->cbss.bssid;

	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
		if (sdata->u.mgd.powersave)
			smps_mode = IEEE80211_SMPS_DYNAMIC;
		else
			smps_mode = IEEE80211_SMPS_OFF;
	}

	/* send SM PS frame to AP */
	err = ieee80211_send_smps_action(sdata, smps_mode,
					 ap, ap);
	if (err)
		sdata->u.mgd.req_smps = old_req;

	return err;
}

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static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
				    bool enabled, int timeout)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_conf *conf = &local->hw.conf;

	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
	    timeout == conf->dynamic_ps_timeout)
		return 0;

	sdata->u.mgd.powersave = enabled;
	conf->dynamic_ps_timeout = timeout;

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	/* no change, but if automatic follow powersave */
	mutex_lock(&sdata->u.mgd.mtx);
	__ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
	mutex_unlock(&sdata->u.mgd.mtx);

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	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);

	return 0;
}

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static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
				      struct net_device *dev,
				      const u8 *addr,
				      const struct cfg80211_bitrate_mask *mask)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	int i, err = -EINVAL;
	u32 target_rate;
	struct ieee80211_supported_band *sband;

	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];

	/* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
	 * target_rate = X, rate->fixed = 1 means only rate X
	 * target_rate = X, rate->fixed = 0 means all rates <= X */
	sdata->max_ratectrl_rateidx = -1;
	sdata->force_unicast_rateidx = -1;

	if (mask->fixed)
		target_rate = mask->fixed / 100;
	else if (mask->maxrate)
		target_rate = mask->maxrate / 100;
	else
		return 0;

	for (i=0; i< sband->n_bitrates; i++) {
		struct ieee80211_rate *brate = &sband->bitrates[i];
		int this_rate = brate->bitrate;

		if (target_rate == this_rate) {
			sdata->max_ratectrl_rateidx = i;
			if (mask->fixed)
				sdata->force_unicast_rateidx = i;
			err = 0;
			break;
		}
	}

	return err;
}

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struct cfg80211_ops mac80211_config_ops = {
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
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	.change_virtual_intf = ieee80211_change_iface,
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	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
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	.get_key = ieee80211_get_key,
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	.set_default_key = ieee80211_config_default_key,
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	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
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	.add_beacon = ieee80211_add_beacon,
	.set_beacon = ieee80211_set_beacon,
	.del_beacon = ieee80211_del_beacon,
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	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
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	.get_station = ieee80211_get_station,
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	.dump_station = ieee80211_dump_station,
#ifdef CONFIG_MAC80211_MESH
	.add_mpath = ieee80211_add_mpath,
	.del_mpath = ieee80211_del_mpath,
	.change_mpath = ieee80211_change_mpath,
	.get_mpath = ieee80211_get_mpath,
	.dump_mpath = ieee80211_dump_mpath,
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	.set_mesh_params = ieee80211_set_mesh_params,
	.get_mesh_params = ieee80211_get_mesh_params,
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#endif
1463
	.change_bss = ieee80211_change_bss,
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	.set_txq_params = ieee80211_set_txq_params,
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	.set_channel = ieee80211_set_channel,
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	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
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	.scan = ieee80211_scan,
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	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
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	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
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	.set_wiphy_params = ieee80211_set_wiphy_params,
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	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
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	.set_wds_peer = ieee80211_set_wds_peer,
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	.rfkill_poll = ieee80211_rfkill_poll,
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	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
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	.set_power_mgmt = ieee80211_set_power_mgmt,
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	.set_bitrate_mask = ieee80211_set_bitrate_mask,
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};