[mirror_ubuntu-bionic-kernel.git] / net / mac80211 / wext.c

/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005-2006, Devicescape Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <asm/uaccess.h>

#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "led.h"
#include "rate.h"
#include "wpa.h"
#include "aes_ccm.h"


static int ieee80211_ioctl_siwfreq(struct net_device *dev,
				   struct iw_request_info *info,
				   struct iw_freq *freq, char *extra)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_channel *chan;

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_siwfreq(dev, info, freq, extra);

	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
	if (freq->e == 0) {
		if (freq->m < 0)
			return -EINVAL;
		else
			chan = ieee80211_get_channel(local->hw.wiphy,
				ieee80211_channel_to_frequency(freq->m));
	} else {
		int i, div = 1000000;
		for (i = 0; i < freq->e; i++)
			div /= 10;
		if (div <= 0)
			return -EINVAL;
		chan = ieee80211_get_channel(local->hw.wiphy, freq->m / div);
	}

	if (!chan)
		return -EINVAL;

	if (chan->flags & IEEE80211_CHAN_DISABLED)
		return -EINVAL;

	/*
	 * no change except maybe auto -> fixed, ignore the HT
	 * setting so you can fix a channel you're on already
	 */
	if (local->oper_channel == chan)
		return 0;

	local->oper_channel = chan;
	local->oper_channel_type = NL80211_CHAN_NO_HT;
	ieee80211_hw_config(local, 0);

	return 0;
}


static int ieee80211_ioctl_giwfreq(struct net_device *dev,
				   struct iw_request_info *info,
				   struct iw_freq *freq, char *extra)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);

	freq->m = local->oper_channel->center_freq;
	freq->e = 6;

	return 0;
}


static int ieee80211_ioctl_siwessid(struct net_device *dev,
				    struct iw_request_info *info,
				    struct iw_point *data, char *ssid)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);

	return -EOPNOTSUPP;
}


static int ieee80211_ioctl_giwessid(struct net_device *dev,
				    struct iw_request_info *info,
				    struct iw_point *data, char *ssid)
{
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);

	return -EOPNOTSUPP;
}


static int ieee80211_ioctl_siwap(struct net_device *dev,
				 struct iw_request_info *info,
				 struct sockaddr *ap_addr, char *extra)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);

	if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);

	if (sdata->vif.type == NL80211_IFTYPE_WDS) {
		/*
		 * If it is necessary to update the WDS peer address
		 * while the interface is running, then we need to do
		 * more work here, namely if it is running we need to
		 * add a new and remove the old STA entry, this is
		 * normally handled by _open() and _stop().
		 */
		if (netif_running(dev))
			return -EBUSY;

		memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
		       ETH_ALEN);

		return 0;
	}

	return -EOPNOTSUPP;
}


static int ieee80211_ioctl_giwap(struct net_device *dev,
				 struct iw_request_info *info,
				 struct sockaddr *ap_addr, char *extra)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);

	if (sdata->vif.type == NL80211_IFTYPE_STATION)
		return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);

	if (sdata->vif.type == NL80211_IFTYPE_WDS) {
		ap_addr->sa_family = ARPHRD_ETHER;
		memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
		return 0;
	}

	return -EOPNOTSUPP;
}


static int ieee80211_ioctl_siwrate(struct net_device *dev,
				  struct iw_request_info *info,
				  struct iw_param *rate, char *extra)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	int i, err = -EINVAL;
	u32 target_rate = rate->value / 100000;
	struct ieee80211_sub_if_data *sdata;
	struct ieee80211_supported_band *sband;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	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 (rate->value < 0)
		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 (rate->fixed)
				sdata->force_unicast_rateidx = i;
			err = 0;
			break;
		}
	}
	return err;
}

static int ieee80211_ioctl_giwrate(struct net_device *dev,
				  struct iw_request_info *info,
				  struct iw_param *rate, char *extra)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
	struct ieee80211_supported_band *sband;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

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

	rcu_read_lock();

	sta = sta_info_get(local, sdata->u.mgd.bssid);

	if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
		rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
	else
		rate->value = 0;

	rcu_read_unlock();

	if (!sta)
		return -ENODEV;

	rate->value *= 100000;

	return 0;
}

/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct iw_statistics *wstats = &local->wstats;
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct sta_info *sta = NULL;

	rcu_read_lock();

	if (sdata->vif.type == NL80211_IFTYPE_STATION)
		sta = sta_info_get(local, sdata->u.mgd.bssid);

	if (!sta) {
		wstats->discard.fragment = 0;
		wstats->discard.misc = 0;
		wstats->qual.qual = 0;
		wstats->qual.level = 0;
		wstats->qual.noise = 0;
		wstats->qual.updated = IW_QUAL_ALL_INVALID;
	} else {
		wstats->qual.updated = 0;
		/*
		 * mirror what cfg80211 does for iwrange/scan results,
		 * otherwise userspace gets confused.
		 */
		if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC |
				       IEEE80211_HW_SIGNAL_DBM)) {
			wstats->qual.updated |= IW_QUAL_LEVEL_UPDATED;
			wstats->qual.updated |= IW_QUAL_QUAL_UPDATED;
		} else {
			wstats->qual.updated |= IW_QUAL_LEVEL_INVALID;
			wstats->qual.updated |= IW_QUAL_QUAL_INVALID;
		}

		if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
			wstats->qual.level = sta->last_signal;
			wstats->qual.qual = sta->last_signal;
		} else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
			int sig = sta->last_signal;

			wstats->qual.updated |= IW_QUAL_DBM;
			wstats->qual.level = sig;
			if (sig < -110)
				sig = -110;
			else if (sig > -40)
				sig = -40;
			wstats->qual.qual = sig + 110;
		}

		if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
			/*
			 * This assumes that if driver reports noise, it also
			 * reports signal in dBm.
			 */
			wstats->qual.noise = sta->last_noise;
			wstats->qual.updated |= IW_QUAL_NOISE_UPDATED;
		} else {
			wstats->qual.updated |= IW_QUAL_NOISE_INVALID;
		}
	}

	rcu_read_unlock();

	return wstats;
}

/* Structures to export the Wireless Handlers */

static const iw_handler ieee80211_handler[] =
{
	(iw_handler) NULL,				/* SIOCSIWCOMMIT */
	(iw_handler) cfg80211_wext_giwname,		/* SIOCGIWNAME */
	(iw_handler) NULL,				/* SIOCSIWNWID */
	(iw_handler) NULL,				/* SIOCGIWNWID */
	(iw_handler) ieee80211_ioctl_siwfreq,		/* SIOCSIWFREQ */
	(iw_handler) ieee80211_ioctl_giwfreq,		/* SIOCGIWFREQ */
	(iw_handler) cfg80211_wext_siwmode,		/* SIOCSIWMODE */
	(iw_handler) cfg80211_wext_giwmode,		/* SIOCGIWMODE */
	(iw_handler) NULL,				/* SIOCSIWSENS */
	(iw_handler) NULL,				/* SIOCGIWSENS */
	(iw_handler) NULL /* not used */,		/* SIOCSIWRANGE */
	(iw_handler) cfg80211_wext_giwrange,		/* SIOCGIWRANGE */
	(iw_handler) NULL /* not used */,		/* SIOCSIWPRIV */
	(iw_handler) NULL /* kernel code */,		/* SIOCGIWPRIV */
	(iw_handler) NULL /* not used */,		/* SIOCSIWSTATS */
	(iw_handler) NULL /* kernel code */,		/* SIOCGIWSTATS */
	(iw_handler) NULL,				/* SIOCSIWSPY */
	(iw_handler) NULL,				/* SIOCGIWSPY */
	(iw_handler) NULL,				/* SIOCSIWTHRSPY */
	(iw_handler) NULL,				/* SIOCGIWTHRSPY */
	(iw_handler) ieee80211_ioctl_siwap,		/* SIOCSIWAP */
	(iw_handler) ieee80211_ioctl_giwap,		/* SIOCGIWAP */
	(iw_handler) cfg80211_wext_siwmlme,		/* SIOCSIWMLME */
	(iw_handler) NULL,				/* SIOCGIWAPLIST */
	(iw_handler) cfg80211_wext_siwscan,		/* SIOCSIWSCAN */
	(iw_handler) cfg80211_wext_giwscan,		/* SIOCGIWSCAN */
	(iw_handler) ieee80211_ioctl_siwessid,		/* SIOCSIWESSID */
	(iw_handler) ieee80211_ioctl_giwessid,		/* SIOCGIWESSID */
	(iw_handler) NULL,				/* SIOCSIWNICKN */
	(iw_handler) NULL,				/* SIOCGIWNICKN */
	(iw_handler) NULL,				/* -- hole -- */
	(iw_handler) NULL,				/* -- hole -- */
	(iw_handler) ieee80211_ioctl_siwrate,		/* SIOCSIWRATE */
	(iw_handler) ieee80211_ioctl_giwrate,		/* SIOCGIWRATE */
	(iw_handler) cfg80211_wext_siwrts,		/* SIOCSIWRTS */
	(iw_handler) cfg80211_wext_giwrts,		/* SIOCGIWRTS */
	(iw_handler) cfg80211_wext_siwfrag,		/* SIOCSIWFRAG */
	(iw_handler) cfg80211_wext_giwfrag,		/* SIOCGIWFRAG */
	(iw_handler) cfg80211_wext_siwtxpower,		/* SIOCSIWTXPOW */
	(iw_handler) cfg80211_wext_giwtxpower,		/* SIOCGIWTXPOW */
	(iw_handler) cfg80211_wext_siwretry,		/* SIOCSIWRETRY */
	(iw_handler) cfg80211_wext_giwretry,		/* SIOCGIWRETRY */
	(iw_handler) cfg80211_wext_siwencode,		/* SIOCSIWENCODE */
	(iw_handler) cfg80211_wext_giwencode,		/* SIOCGIWENCODE */
	(iw_handler) cfg80211_wext_siwpower,		/* SIOCSIWPOWER */
	(iw_handler) cfg80211_wext_giwpower,		/* SIOCGIWPOWER */
	(iw_handler) NULL,				/* -- hole -- */
	(iw_handler) NULL,				/* -- hole -- */
	(iw_handler) cfg80211_wext_siwgenie,		/* SIOCSIWGENIE */
	(iw_handler) NULL,				/* SIOCGIWGENIE */
	(iw_handler) cfg80211_wext_siwauth,		/* SIOCSIWAUTH */
	(iw_handler) cfg80211_wext_giwauth,		/* SIOCGIWAUTH */
	(iw_handler) cfg80211_wext_siwencodeext,	/* SIOCSIWENCODEEXT */
	(iw_handler) NULL,				/* SIOCGIWENCODEEXT */
	(iw_handler) NULL,				/* SIOCSIWPMKSA */
	(iw_handler) NULL,				/* -- hole -- */
};

const struct iw_handler_def ieee80211_iw_handler_def =
{
	.num_standard	= ARRAY_SIZE(ieee80211_handler),
	.standard	= (iw_handler *) ieee80211_handler,
	.get_wireless_stats = ieee80211_get_wireless_stats,
};
Commit	Line	Data
	1	/*
	2	* Copyright 2002-2005, Instant802 Networks, Inc.
	3	* Copyright 2005-2006, Devicescape Software, Inc.
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/init.h>
	12	#include <linux/netdevice.h>
	13	#include <linux/types.h>
	14	#include <linux/slab.h>
	15	#include <linux/skbuff.h>
	16	#include <linux/etherdevice.h>
	17	#include <linux/if_arp.h>
	18	#include <linux/wireless.h>
	19	#include <net/iw_handler.h>
	20	#include <asm/uaccess.h>
	21
	22	#include <net/mac80211.h>
	23	#include "ieee80211_i.h"
	24	#include "led.h"
	25	#include "rate.h"
	26	#include "wpa.h"
	27	#include "aes_ccm.h"
	28
	29
	30	static int ieee80211_ioctl_siwfreq(struct net_device *dev,
	31	struct iw_request_info *info,
	32	struct iw_freq freq, char extra)
	33	{
	34	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	35	struct ieee80211_local *local = sdata->local;
	36	struct ieee80211_channel *chan;
	37
	38	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	39	return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
	40	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
	41	return cfg80211_mgd_wext_siwfreq(dev, info, freq, extra);
	42
	43	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
	44	if (freq->e == 0) {
	45	if (freq->m < 0)
	46	return -EINVAL;
	47	else
	48	chan = ieee80211_get_channel(local->hw.wiphy,
	49	ieee80211_channel_to_frequency(freq->m));
	50	} else {
	51	int i, div = 1000000;
	52	for (i = 0; i < freq->e; i++)
	53	div /= 10;
	54	if (div <= 0)
	55	return -EINVAL;
	56	chan = ieee80211_get_channel(local->hw.wiphy, freq->m / div);
	57	}
	58
	59	if (!chan)
	60	return -EINVAL;
	61
	62	if (chan->flags & IEEE80211_CHAN_DISABLED)
	63	return -EINVAL;
	64
	65	/*
	66	* no change except maybe auto -> fixed, ignore the HT
	67	* setting so you can fix a channel you're on already
	68	*/
	69	if (local->oper_channel == chan)
	70	return 0;
	71
	72	local->oper_channel = chan;
	73	local->oper_channel_type = NL80211_CHAN_NO_HT;
	74	ieee80211_hw_config(local, 0);
	75
	76	return 0;
	77	}
	78
	79
	80	static int ieee80211_ioctl_giwfreq(struct net_device *dev,
	81	struct iw_request_info *info,
	82	struct iw_freq freq, char extra)
	83	{
	84	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	85	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	86
	87	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	88	return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
	89	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
	90	return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
	91
	92	freq->m = local->oper_channel->center_freq;
	93	freq->e = 6;
	94
	95	return 0;
	96	}
	97
	98
	99	static int ieee80211_ioctl_siwessid(struct net_device *dev,
	100	struct iw_request_info *info,
	101	struct iw_point data, char ssid)
	102	{
	103	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	104
	105	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	106	return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
	107	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
	108	return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
	109
	110	return -EOPNOTSUPP;
	111	}
	112
	113
	114	static int ieee80211_ioctl_giwessid(struct net_device *dev,
	115	struct iw_request_info *info,
	116	struct iw_point data, char ssid)
	117	{
	118	struct ieee80211_sub_if_data *sdata;
	119
	120	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	121
	122	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	123	return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
	124	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
	125	return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
	126
	127	return -EOPNOTSUPP;
	128	}
	129
	130
	131	static int ieee80211_ioctl_siwap(struct net_device *dev,
	132	struct iw_request_info *info,
	133	struct sockaddr ap_addr, char extra)
	134	{
	135	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	136
	137	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	138	return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
	139
	140	if (sdata->vif.type == NL80211_IFTYPE_STATION)
	141	return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
	142
	143	if (sdata->vif.type == NL80211_IFTYPE_WDS) {
	144	/*
	145	* If it is necessary to update the WDS peer address
	146	* while the interface is running, then we need to do
	147	* more work here, namely if it is running we need to
	148	* add a new and remove the old STA entry, this is
	149	* normally handled by _open() and _stop().
	150	*/
	151	if (netif_running(dev))
	152	return -EBUSY;
	153
	154	memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
	155	ETH_ALEN);
	156
	157	return 0;
	158	}
	159
	160	return -EOPNOTSUPP;
	161	}
	162
	163
	164	static int ieee80211_ioctl_giwap(struct net_device *dev,
	165	struct iw_request_info *info,
	166	struct sockaddr ap_addr, char extra)
	167	{
	168	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	169
	170	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
	171	return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
	172
	173	if (sdata->vif.type == NL80211_IFTYPE_STATION)
	174	return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
	175
	176	if (sdata->vif.type == NL80211_IFTYPE_WDS) {
	177	ap_addr->sa_family = ARPHRD_ETHER;
	178	memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
	179	return 0;
	180	}
	181
	182	return -EOPNOTSUPP;
	183	}
	184
	185
	186	static int ieee80211_ioctl_siwrate(struct net_device *dev,
	187	struct iw_request_info *info,
	188	struct iw_param rate, char extra)
	189	{
	190	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	191	int i, err = -EINVAL;
	192	u32 target_rate = rate->value / 100000;
	193	struct ieee80211_sub_if_data *sdata;
	194	struct ieee80211_supported_band *sband;
	195
	196	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	197
	198	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
	199
	200	/* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
	201	* target_rate = X, rate->fixed = 1 means only rate X
	202	* target_rate = X, rate->fixed = 0 means all rates <= X */
	203	sdata->max_ratectrl_rateidx = -1;
	204	sdata->force_unicast_rateidx = -1;
	205	if (rate->value < 0)
	206	return 0;
	207
	208	for (i=0; i< sband->n_bitrates; i++) {
	209	struct ieee80211_rate *brate = &sband->bitrates[i];
	210	int this_rate = brate->bitrate;
	211
	212	if (target_rate == this_rate) {
	213	sdata->max_ratectrl_rateidx = i;
	214	if (rate->fixed)
	215	sdata->force_unicast_rateidx = i;
	216	err = 0;
	217	break;
	218	}
	219	}
	220	return err;
	221	}
	222
	223	static int ieee80211_ioctl_giwrate(struct net_device *dev,
	224	struct iw_request_info *info,
	225	struct iw_param rate, char extra)
	226	{
	227	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	228	struct sta_info *sta;
	229	struct ieee80211_sub_if_data *sdata;
	230	struct ieee80211_supported_band *sband;
	231
	232	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	233
	234	if (sdata->vif.type != NL80211_IFTYPE_STATION)
	235	return -EOPNOTSUPP;
	236
	237	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
	238
	239	rcu_read_lock();
	240
	241	sta = sta_info_get(local, sdata->u.mgd.bssid);
	242
	243	if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
	244	rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
	245	else
	246	rate->value = 0;
	247
	248	rcu_read_unlock();
	249
	250	if (!sta)
	251	return -ENODEV;
	252
	253	rate->value *= 100000;
	254
	255	return 0;
	256	}
	257
	258	/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
	259	static struct iw_statistics ieee80211_get_wireless_stats(struct net_device dev)
	260	{
	261	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	262	struct iw_statistics *wstats = &local->wstats;
	263	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	264	struct sta_info *sta = NULL;
	265
	266	rcu_read_lock();
	267
	268	if (sdata->vif.type == NL80211_IFTYPE_STATION)
	269	sta = sta_info_get(local, sdata->u.mgd.bssid);
	270
	271	if (!sta) {
	272	wstats->discard.fragment = 0;
	273	wstats->discard.misc = 0;
	274	wstats->qual.qual = 0;
	275	wstats->qual.level = 0;
	276	wstats->qual.noise = 0;
	277	wstats->qual.updated = IW_QUAL_ALL_INVALID;
	278	} else {
	279	wstats->qual.updated = 0;
	280	/*
	281	* mirror what cfg80211 does for iwrange/scan results,
	282	* otherwise userspace gets confused.
	283	*/
	284	if (local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC \|
	285	IEEE80211_HW_SIGNAL_DBM)) {
	286	wstats->qual.updated \|= IW_QUAL_LEVEL_UPDATED;
	287	wstats->qual.updated \|= IW_QUAL_QUAL_UPDATED;
	288	} else {
	289	wstats->qual.updated \|= IW_QUAL_LEVEL_INVALID;
	290	wstats->qual.updated \|= IW_QUAL_QUAL_INVALID;
	291	}
	292
	293	if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
	294	wstats->qual.level = sta->last_signal;
	295	wstats->qual.qual = sta->last_signal;
	296	} else if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
	297	int sig = sta->last_signal;
	298
	299	wstats->qual.updated \|= IW_QUAL_DBM;
	300	wstats->qual.level = sig;
	301	if (sig < -110)
	302	sig = -110;
	303	else if (sig > -40)
	304	sig = -40;
	305	wstats->qual.qual = sig + 110;
	306	}
	307
	308	if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
	309	/*
	310	* This assumes that if driver reports noise, it also
	311	* reports signal in dBm.
	312	*/
	313	wstats->qual.noise = sta->last_noise;
	314	wstats->qual.updated \|= IW_QUAL_NOISE_UPDATED;
	315	} else {
	316	wstats->qual.updated \|= IW_QUAL_NOISE_INVALID;
	317	}
	318	}
	319
	320	rcu_read_unlock();
	321
	322	return wstats;
	323	}
	324
	325	/* Structures to export the Wireless Handlers */
	326
	327	static const iw_handler ieee80211_handler[] =
	328	{
	329	(iw_handler) NULL, /* SIOCSIWCOMMIT */
	330	(iw_handler) cfg80211_wext_giwname, /* SIOCGIWNAME */
	331	(iw_handler) NULL, /* SIOCSIWNWID */
	332	(iw_handler) NULL, /* SIOCGIWNWID */
	333	(iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
	334	(iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
	335	(iw_handler) cfg80211_wext_siwmode, /* SIOCSIWMODE */
	336	(iw_handler) cfg80211_wext_giwmode, /* SIOCGIWMODE */
	337	(iw_handler) NULL, /* SIOCSIWSENS */
	338	(iw_handler) NULL, /* SIOCGIWSENS */
	339	(iw_handler) NULL /* not used /, / SIOCSIWRANGE */
	340	(iw_handler) cfg80211_wext_giwrange, /* SIOCGIWRANGE */
	341	(iw_handler) NULL /* not used /, / SIOCSIWPRIV */
	342	(iw_handler) NULL /* kernel code /, / SIOCGIWPRIV */
	343	(iw_handler) NULL /* not used /, / SIOCSIWSTATS */
	344	(iw_handler) NULL /* kernel code /, / SIOCGIWSTATS */
	345	(iw_handler) NULL, /* SIOCSIWSPY */
	346	(iw_handler) NULL, /* SIOCGIWSPY */
	347	(iw_handler) NULL, /* SIOCSIWTHRSPY */
	348	(iw_handler) NULL, /* SIOCGIWTHRSPY */
	349	(iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
	350	(iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
	351	(iw_handler) cfg80211_wext_siwmlme, /* SIOCSIWMLME */
	352	(iw_handler) NULL, /* SIOCGIWAPLIST */
	353	(iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
	354	(iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
	355	(iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
	356	(iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
	357	(iw_handler) NULL, /* SIOCSIWNICKN */
	358	(iw_handler) NULL, /* SIOCGIWNICKN */
	359	(iw_handler) NULL, /* -- hole -- */
	360	(iw_handler) NULL, /* -- hole -- */
	361	(iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
	362	(iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
	363	(iw_handler) cfg80211_wext_siwrts, /* SIOCSIWRTS */
	364	(iw_handler) cfg80211_wext_giwrts, /* SIOCGIWRTS */
	365	(iw_handler) cfg80211_wext_siwfrag, /* SIOCSIWFRAG */
	366	(iw_handler) cfg80211_wext_giwfrag, /* SIOCGIWFRAG */
	367	(iw_handler) cfg80211_wext_siwtxpower, /* SIOCSIWTXPOW */
	368	(iw_handler) cfg80211_wext_giwtxpower, /* SIOCGIWTXPOW */
	369	(iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */
	370	(iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */
	371	(iw_handler) cfg80211_wext_siwencode, /* SIOCSIWENCODE */
	372	(iw_handler) cfg80211_wext_giwencode, /* SIOCGIWENCODE */
	373	(iw_handler) cfg80211_wext_siwpower, /* SIOCSIWPOWER */
	374	(iw_handler) cfg80211_wext_giwpower, /* SIOCGIWPOWER */
	375	(iw_handler) NULL, /* -- hole -- */
	376	(iw_handler) NULL, /* -- hole -- */
	377	(iw_handler) cfg80211_wext_siwgenie, /* SIOCSIWGENIE */
	378	(iw_handler) NULL, /* SIOCGIWGENIE */
	379	(iw_handler) cfg80211_wext_siwauth, /* SIOCSIWAUTH */
	380	(iw_handler) cfg80211_wext_giwauth, /* SIOCGIWAUTH */
	381	(iw_handler) cfg80211_wext_siwencodeext, /* SIOCSIWENCODEEXT */
	382	(iw_handler) NULL, /* SIOCGIWENCODEEXT */
	383	(iw_handler) NULL, /* SIOCSIWPMKSA */
	384	(iw_handler) NULL, /* -- hole -- */
	385	};
	386
	387	const struct iw_handler_def ieee80211_iw_handler_def =
	388	{
	389	.num_standard = ARRAY_SIZE(ieee80211_handler),
	390	.standard = (iw_handler *) ieee80211_handler,
	391	.get_wireless_stats = ieee80211_get_wireless_stats,
	392	};