path: root/net/mac80211/ieee80211_ioctl.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 "ieee80211_rate.h"
#include "wpa.h"
#include "aes_ccm.h"


static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
				    int idx, int alg, int remove,
				    int set_tx_key, const u8 *_key,
				    size_t key_len)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	int ret = 0;
	struct sta_info *sta;
	struct ieee80211_key *key;
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

	if (is_broadcast_ether_addr(sta_addr)) {
		sta = NULL;
		key = sdata->keys[idx];
	} else {
		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) {
			printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
			       "individual key\n", dev->name);
			return -EINVAL;
		}

		sta = sta_info_get(local, sta_addr);
		if (!sta) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
			DECLARE_MAC_BUF(mac);
			printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
			       "%s\n",
			       dev->name, print_mac(mac, sta_addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */

			return -ENOENT;
		}

		key = sta->key;
	}

	if (remove) {
		ieee80211_key_free(key);
		key = NULL;
	} else {
		/*
		 * Automatically frees any old key if present.
		 */
		key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
		if (!key) {
			ret = -ENOMEM;
			goto err_out;
		}
	}

	if (set_tx_key || (!sta && !sdata->default_key && key))
		ieee80211_set_default_key(sdata, idx);

	ret = 0;
 err_out:
	if (sta)
		sta_info_put(sta);
	return ret;
}

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->flags & IEEE80211_SDATA_USERSPACE_MLME)
		return -EOPNOTSUPP;

	if (sdata->type == IEEE80211_IF_TYPE_STA ||
	    sdata->type == IEEE80211_IF_TYPE_IBSS) {
		int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
		if (ret)
			return ret;
		sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
		ieee80211_sta_req_auth(