<commit_before>/*
 * 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_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
				    int idx, int alg, int remove,
				    int set_tx_key, const u8 *_key,
				    size_t key_len)
{
	struct ieee80211_local *local = sdata->local;
	struct sta_info *sta;
	struct ieee80211_key *key;
	int err;

	if (alg == ALG_AES_CMAC) {
		if (idx < NUM_DEFAULT_KEYS ||
		    idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
			printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
			       "(BIP)\n", sdata->dev->name, idx);
			return -EINVAL;
		}
	} else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
		printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
		       sdata->dev->name, idx);
		return -EINVAL;
	}

	if (remove) {
		rcu_read_lock();

		err = 0;

		if (is_broadcast_ether_addr(sta_addr)) {
			key = sdata->keys[idx];
		} else {
			sta = sta_info_get(local, sta_addr);
			if (!sta) {
				err = -ENOENT;
				goto out_unlock;
			}
			key = sta->key;
		}

		ieee80211_key_free(key);
	} else {
		key = ieee80211_key_alloc(alg, idx, key_len, _key);
		if (!key)
			return -ENOMEM;

		sta = NULL;
		err = 0;

		rcu_read_lock();

		if (!is_broadcast_ether_addr(sta_addr)) {
			set_tx_key = 0;
			/*
			 * According to the standard, the key index of a
			 * pairwise key must be zero. However, some AP are
			 * broken when it comes to WEP key indices, so we
			 * work around this.
			 */
			if (idx != 0 && alg != ALG_WEP) {
				ieee80211_key_free(key);
				err = -EINVAL;
				goto out_unlock;
			}

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

		if (alg == ALG_WEP &&
			key_len != LEN_WEP40 && key_len != LEN_WEP104) {
			ieee80211_key_free(key);
			err = -EINVAL;
			goto out_unlock;
		}

		ieee80211_key_link(key, sdata, sta);

		if (set_tx_key || (!sta && !sdata->default_key && key))
			ieee80211_set_default_key(sdata, idx);
		if (alg == ALG_AES_CMAC &&
		    (set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
			ieee80211_set_default_mgmt_key(sdata, idx);
	}

 out_unlock:
	rcu_read_unlock();

	return err;
}

static int ieee80211_ioctl_siwgenie(struct net_device *dev,
				    struct iw_request_info *info,
				    struct iw_point *data, char *extra)
{
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
		int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
		if (ret)
			return ret;
		sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
		sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
		ieee80211_sta_req_auth(sdata);
		return 0;
	}

	return -EOPNOTSUPP;
}

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);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;

	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
	if (freq->e == 0) {
		if (freq->m < 0) {
			if (sdata->vif.type == NL80211_IFTYPE_STATION)
				sdata->u.mgd.flags |=
					IEEE80211_STA_AUTO_CHANNEL_SEL;
			return 0;
		} else
			return ieee80211_set_freq(sdata,
				ieee80211_channel_to_frequency(freq->m));
	} else {
		int i, div = 1000000;
		for (i = 0; i < freq->e; i++)
			div /= 10;
		if (div > 0)
			return ieee80211_set_freq(sdata, freq->m / div);
		else
			return -EINVAL;
	}
}


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);

	freq->m = local->hw.conf.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);
	size_t len = data->length;<commit_msg>mac80211: report operating frequency rather than current<commit_after>/*
 * 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_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr,
				    int idx, int alg, int remove,
				    int set_tx_key, const u8 *_key,
				    size_t key_len)
{
	struct ieee80211_local *local = sdata->local;
	struct sta_info *sta;
	struct ieee80211_key *key;
	int err;

	if (alg == ALG_AES_CMAC) {
		if (idx < NUM_DEFAULT_KEYS ||
		    idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) {
			printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d "
			       "(BIP)\n", sdata->dev->name, idx);
			return -EINVAL;
		}
	} else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
		printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
		       sdata->dev->name, idx);
		return -EINVAL;
	}

	if (remove) {
		rcu_read_lock();

		err = 0;

		if (is_broadcast_ether_addr(sta_addr)) {
			key = sdata->keys[idx];
		} else {
			sta = sta_info_get(local, sta_addr);
			if (!sta) {
				err = -ENOENT;
				goto out_unlock;
			}
			key = sta->key;
		}

		ieee80211_key_free(key);
	} else {
		key = ieee80211_key_alloc(alg, idx, key_len, _key);
		if (!key)
			return -ENOMEM;

		sta = NULL;
		err = 0;

		rcu_read_lock();

		if (!is_broadcast_ether_addr(sta_addr)) {
			set_tx_key = 0;
			/*
			 * According to the standard, the key index of a
			 * pairwise key must be zero. However, some AP are
			 * broken when it comes to WEP key indices, so we
			 * work around this.
			 */
			if (idx != 0 && alg != ALG_WEP) {
				ieee80211_key_free(key);
				err = -EINVAL;
				goto out_unlock;
			}

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

		if (alg == ALG_WEP &&
			key_len != LEN_WEP40 && key_len != LEN_WEP104) {
			ieee80211_key_free(key);
			err = -EINVAL;
			goto out_unlock;
		}

		ieee80211_key_link(key, sdata, sta);

		if (set_tx_key || (!sta && !sdata->default_key && key))
			ieee80211_set_default_key(sdata, idx);
		if (alg == ALG_AES_CMAC &&
		    (set_tx_key || (!sta && !sdata->default_mgmt_key && key)))
			ieee80211_set_default_mgmt_key(sdata, idx);
	}

 out_unlock:
	rcu_read_unlock();

	return err;
}

static int ieee80211_ioctl_siwgenie(struct net_device *dev,
				    struct iw_request_info *info,
				    struct iw_point *data, char *extra)
{
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
		int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length);
		if (ret)
			return ret;
		sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
		sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
		ieee80211_sta_req_auth(sdata);
		return 0;
	}

	return -EOPNOTSUPP;
}

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);

	if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
		return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
	else if (sdata->vif.type == NL80211_IFTYPE_STATION)
		sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;

	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
	if (freq->e == 0) {
		if (freq->m < 0) {
			if (sdata->vif.type == NL80211_IFTYPE_STATION)
				sdata->u.mgd.flags |=
					IEEE80211_STA_AUTO_CHANNEL_SEL;
			return 0;
		} else
			return ieee80211_set_freq(sdata,
				ieee80211_channel_to_frequency(freq->m));
	} else {
		int i, div = 1000000;
		for (i = 0; i < freq->e; i++)
			div /= 10;
		if (div > 0)
			return ieee80211_set_freq(sdata, freq->m / div);
		else
			return -EINVAL;
	}
}


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);

	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);
	size_t len = data->length;
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