freebsd-dev/sys/net80211/ieee80211_xauth.c

/*-
 * Copyright (c) 2004 Video54 Technologies, Inc.
 * Copyright (c) 2004-2005 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * External authenticator placeholder module.
 *
 * This support is optional; it is only used when the 802.11 layer's
 * authentication mode is set to use 802.1x or WPA is enabled separately
 * (for WPA-PSK).  If compiled as a module this code does not need
 * to be present unless 802.1x/WPA is in use.
 *
 * The authenticator hooks into the 802.11 layer.  At present we use none
 * of the available callbacks--the user mode authenticator process works
 * entirely from messages about stations joining and leaving.
 */
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h> 
#include <sys/mbuf.h>   
#include <sys/module.h>

#include <sys/socket.h>

#include <net/if.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <net/route.h>

#include <net80211/ieee80211_var.h>

/*
 * One module handles everything for now.  May want
 * to split things up for embedded applications.
 */
static const struct ieee80211_authenticator xauth = {
	.ia_name	= "external",
	.ia_attach	= NULL,
	.ia_detach	= NULL,
	.ia_node_join	= NULL,
	.ia_node_leave	= NULL,
};

/*
 * Module glue.
 */
static int
wlan_xauth_modevent(module_t mod, int type, void *unused)
{
	switch (type) {
	case MOD_LOAD:
		ieee80211_authenticator_register(IEEE80211_AUTH_8021X, &xauth);
		ieee80211_authenticator_register(IEEE80211_AUTH_WPA, &xauth);
		return 0;
	case MOD_UNLOAD:
		ieee80211_authenticator_unregister(IEEE80211_AUTH_8021X);
		ieee80211_authenticator_unregister(IEEE80211_AUTH_WPA);
		return 0;
	}
	return EINVAL;
}

static moduledata_t wlan_xauth_mod = {
	"wlan_xauth",
	wlan_xauth_modevent,
	0
};
DECLARE_MODULE(wlan_xauth, wlan_xauth_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
MODULE_VERSION(wlan_xauth, 1);
MODULE_DEPEND(wlan_xauth, wlan, 1, 1, 1);