mirror of https://github.com/proski/madwifi
147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
/*-
|
|
* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* IEEE 802.11 NULL crypto support.
|
|
*/
|
|
#if !defined(AUTOCONF_INCLUDED) && !defined(CONFIG_LOCALVERSION)
|
|
#include <linux/config.h>
|
|
#endif
|
|
#include <linux/version.h>
|
|
#include <linux/module.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
|
|
#include "if_media.h"
|
|
|
|
#include <net80211/ieee80211_var.h>
|
|
|
|
static void *none_attach(struct ieee80211vap *, struct ieee80211_key *);
|
|
static void none_detach(struct ieee80211_key *);
|
|
static int none_setkey(struct ieee80211_key *);
|
|
static int none_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t);
|
|
static int none_decap(struct ieee80211_key *, struct sk_buff *, int);
|
|
static int none_enmic(struct ieee80211_key *, struct sk_buff *, int);
|
|
static int none_demic(struct ieee80211_key *, struct sk_buff *, int, int);
|
|
|
|
const struct ieee80211_cipher ieee80211_cipher_none = {
|
|
.ic_name = "NONE",
|
|
.ic_cipher = IEEE80211_CIPHER_NONE,
|
|
.ic_header = 0,
|
|
.ic_trailer = 0,
|
|
.ic_miclen = 0,
|
|
.ic_attach = none_attach,
|
|
.ic_detach = none_detach,
|
|
.ic_setkey = none_setkey,
|
|
.ic_encap = none_encap,
|
|
.ic_decap = none_decap,
|
|
.ic_enmic = none_enmic,
|
|
.ic_demic = none_demic,
|
|
};
|
|
EXPORT_SYMBOL(ieee80211_cipher_none);
|
|
|
|
static void *
|
|
none_attach(struct ieee80211vap *vap, struct ieee80211_key *k)
|
|
{
|
|
return vap; /* for diagnostics+stats */
|
|
}
|
|
|
|
static void
|
|
none_detach(struct ieee80211_key *k)
|
|
{
|
|
(void) k;
|
|
}
|
|
|
|
static int
|
|
none_setkey(struct ieee80211_key *k)
|
|
{
|
|
(void) k;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
none_encap(struct ieee80211_key *k, struct sk_buff *skb, u_int8_t keyid)
|
|
{
|
|
struct ieee80211vap *vap = k->wk_private;
|
|
#ifdef IEEE80211_DEBUG
|
|
struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
|
|
#endif
|
|
|
|
/*
|
|
* The specified key is not setup; this can
|
|
* happen, at least, when changing keys.
|
|
*/
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr1,
|
|
"key id %u is not set (encap)", keyid>>6);
|
|
vap->iv_stats.is_tx_badcipher++;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
none_decap(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen)
|
|
{
|
|
struct ieee80211vap *vap = k->wk_private;
|
|
#ifdef IEEE80211_DEBUG
|
|
struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
|
|
const u_int8_t *ivp = (const u_int8_t *)&wh[1];
|
|
#endif
|
|
|
|
/*
|
|
* The specified key is not setup; this can
|
|
* happen, at least, when changing keys.
|
|
*/
|
|
/* XXX useful to know dst too */
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2,
|
|
"key id %u is not set (decap)", ivp[IEEE80211_WEP_IVLEN] >> 6);
|
|
vap->iv_stats.is_rx_badkeyid++;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
none_enmic(struct ieee80211_key *k, struct sk_buff *skb, int force_sw)
|
|
{
|
|
struct ieee80211vap *vap = k->wk_private;
|
|
|
|
vap->iv_stats.is_tx_badcipher++;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
none_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force_sw)
|
|
{
|
|
struct ieee80211vap *vap = k->wk_private;
|
|
|
|
vap->iv_stats.is_rx_badkeyid++;
|
|
return 0;
|
|
}
|