cfg.c 36.0 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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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	int ret;
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	if (ieee80211_sdata_running(sdata))
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		return -EBUSY;

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

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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) ||
	    (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
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		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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408
	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)
415
{
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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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420
	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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641
	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
642
		sta->flags &= ~WLAN_STA_AUTHORIZED;
643
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
644
			sta->flags |= WLAN_STA_AUTHORIZED;
645
	}
646

647
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
648
		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
649
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
650
			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
651
	}
652

653
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
654
		sta->flags &= ~WLAN_STA_WME;
655
		if (set & BIT(NL80211_STA_FLAG_WME))
656
			sta->flags |= WLAN_STA_WME;
657
	}
658

659
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
660
		sta->flags &= ~WLAN_STA_MFP;
661
		if (set & BIT(NL80211_STA_FLAG_MFP))
662
			sta->flags |= WLAN_STA_MFP;
663
	}
664
	spin_unlock_bh(&sta->lock);
665

666 667 668 669 670 671 672
	/*
	 * 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.
	 */

680 681 682 683 684
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
685

686 687
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
688 689
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
690 691 692
					rates |= BIT(j);
			}
		}
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		sta->sta.supp_rates[local->oper_channel->band] = rates;
694
	}
695

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	if (params->ht_capa)
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697 698
		ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
						  params->ht_capa,
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						  &sta->sta.ht_cap);
700

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	if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
702 703 704 705 706 707 708 709
		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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	}
711 712 713 714 715
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
716
	struct ieee80211_local *local = wiphy_priv(wiphy);
717 718
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
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	int err;
720
	int layer2_update;
721 722 723 724

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

725 726
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
727 728 729 730
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

731
	if (compare_ether_addr(mac, sdata->vif.addr) == 0)
732 733 734 735 736 737
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
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738 739
	if (!sta)
		return -ENOMEM;
740 741 742 743 744

	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;

	sta_apply_parameters(local, sta, params);

745
	rate_control_rate_init(sta);
746

747 748 749
	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;
	}

758
	if (layer2_update)
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		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

763 764 765 766 767 768
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
769 770
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
771 772
	struct sta_info *sta;

773 774
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

775
	if (mac) {
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		rcu_read_lock();

778
		sta = sta_info_get(sdata, mac);
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779 780
		if (!sta) {
			rcu_read_unlock();
781
			return -ENOENT;
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782
		}
783

784
		sta_info_unlink(&sta);
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785 786
		rcu_read_unlock();

787
		sta_info_destroy(sta);
788
	} else
789
		sta_info_flush(local, sdata);
790 791 792 793 794 795 796 797 798

	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
799
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
800
	struct ieee80211_local *local = wiphy_priv(wiphy);
801 802 803
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;

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804 805
	rcu_read_lock();

806
	sta = sta_info_get(sdata, mac);
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807 808
	if (!sta) {
		rcu_read_unlock();
809
		return -ENOENT;
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	}
811

812
	if (params->vlan && params->vlan != sta->sdata->dev) {
813 814
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

815 816
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
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			rcu_read_unlock();
818
			return -EINVAL;
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819
		}
820

821
		if (params->vlan->ieee80211_ptr->use_4addr) {
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			if (vlansdata->u.vlan.sta) {
				rcu_read_unlock();
824
				return -EBUSY;
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825
			}
826 827 828 829

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

830
		sta->sdata = vlansdata;
831 832 833 834 835
		ieee80211_send_layer2_update(sta);
	}

	sta_apply_parameters(local, sta, params);

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	rcu_read_unlock();

838 839 840
	return 0;
}

841 842 843 844
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
845
	struct ieee80211_sub_if_data *sdata;
846 847 848 849
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

850 851
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

852
	rcu_read_lock();
853
	sta = sta_info_get(sdata, next_hop);
854 855
	if (!sta) {
		rcu_read_unlock();
856
		return -ENOENT;
857
	}
858

859
	err = mesh_path_add(dst, sdata);
860 861
	if (err) {
		rcu_read_unlock();
862
		return err;
863
	}
864

865
	mpath = mesh_path_lookup(dst, sdata);
866 867 868 869 870
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
871

872 873 874 875 876 877 878
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
879 880
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

881
	if (dst)
882
		return mesh_path_del(dst, sdata);
883

884
	mesh_path_flush(sdata);
885 886 887 888 889 890 891
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
892
	struct ieee80211_sub_if_data *sdata;
893 894 895
	struct mesh_path *mpath;
	struct sta_info *sta;

896 897
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

898 899
	rcu_read_lock();

900
	sta = sta_info_get(sdata, next_hop);
901 902
	if (!sta) {
		rcu_read_unlock();
903
		return -ENOENT;
904
	}
905

906
	mpath = mesh_path_lookup(dst, sdata);
907 908 909 910 911 912
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
913

914 915 916 917 918 919 920 921
	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)
922
		memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
923 924 925
	else
		memset(next_hop, 0, ETH_ALEN);

926 927
	pinfo->generation = mesh_paths_generation;

928
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
929
			MPATH_INFO_SN |
930 931 932 933 934 935 936
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
937
	pinfo->sn = mpath->sn;
938 939 940 941 942 943 944 945 946 947 948
	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;
949 950
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
951 952 953 954 955 956 957 958 959 960 961 962
	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)

{
963
	struct ieee80211_sub_if_data *sdata;
964 965
	struct mesh_path *mpath;

966 967
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

968
	rcu_read_lock();
969
	mpath = mesh_path_lookup(dst, sdata);
970 971 972 973 974 975 976 977 978 979 980 981 982 983
	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)
{
984
	struct ieee80211_sub_if_data *sdata;
985 986
	struct mesh_path *mpath;

987 988
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

989
	rcu_read_lock();
990
	mpath = mesh_path_lookup_by_idx(idx, sdata);
991 992 993 994 995 996 997 998 999
	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;
}
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022

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;
1023 1024
	struct ieee80211_if_mesh *ifmsh;

1025
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026
	ifmsh = &sdata->u.mesh;
1027 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

	/* 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;
1061 1062 1063 1064
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1065 1066 1067
	return 0;
}

1068 1069
#endif

1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
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;
1081 1082 1083
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
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		sdata->vif.bss_conf.use_short_preamble =
1085 1086 1087 1088
			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 =
1090 1091 1092 1093
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
	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;
	}

1112 1113 1114 1115 1116
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
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;
1131
	if (drv_conf_tx(local, params->queue, &p)) {
1132
		printk(KERN_DEBUG "%s: failed to set TX queue "
1133 1134
		       "parameters for queue %d\n",
		       wiphy_name(local->hw.wiphy), params->queue);
1135 1136 1137 1138 1139 1140
		return -EINVAL;
	}

	return 0;
}

1141 1142
static int ieee80211_set_channel(struct wiphy *wiphy,
				 struct ieee80211_channel *chan,
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				 enum nl80211_channel_type channel_type)
1144 1145 1146 1147
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	local->oper_channel = chan;
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	local->oper_channel_type = channel_type;
1149 1150 1151 1152

	return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
}

1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
#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

1168 1169 1170 1171 1172 1173 1174 1175 1176 1177
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 &&
1178 1179
	    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
	    (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
1180 1181 1182 1183 1184
		return -EOPNOTSUPP;

	return ieee80211_request_scan(sdata, req);
}

1185 1186 1187
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
1188
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1189 1190 1191 1192 1193
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
1194
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1195 1196 1197
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
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1198 1199
			    struct cfg80211_deauth_request *req,
			    void *cookie)
1200
{
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	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
				    req, cookie);
1203 1204 1205
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
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1206 1207
			      struct cfg80211_disassoc_request *req,
			      void *cookie)
1208
{
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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;
	}

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	ap = sdata->u.mgd.associated->bssid;
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	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);
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	int i;
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	u32 target_rate;
	struct ieee80211_supported_band *sband;

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	/*
	 * This _could_ be supported by providing a hook for
	 * drivers for this function, but at this point it
	 * doesn't seem worth bothering.
	 */
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
		return -EOPNOTSUPP;

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

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

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	for (i = 0; i< sband->n_bitrates; i++) {
		if (target_rate != sband->bitrates[i].bitrate)
			continue;
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		/* requested bitrate found */
		sdata->max_ratectrl_rateidx = i;
		if (mask->fixed)
			sdata->force_unicast_rateidx = i;
		return 0;
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	}

1441
	return -EINVAL;
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}

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struct cfg80211_ops mac80211_config_ops = {
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
1447
	.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,
1452
	.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,
1459
	.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
1470
	.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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};