net/mac80211/wext.c - LeafOS-Devices/android_kernel_realme_mt6785 - Gitiles

 /*
  * 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)
 		return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
 	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)
 		return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);

 	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,
 };
	/*
	* 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)
	return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
	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)
	return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);

	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,
	};