ieee80211_xauth.c revision 139530 
1/*-
2 * Copyright (c) 2004 Video54 Technologies, Inc.
3 * Copyright (c) 2004-2005 Sam Leffler, Errno Consulting
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2 as published by the Free
19 * Software Foundation.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_xauth.c 139530 2004-12-31 22:42:38Z sam $");
35
36/*
37 * External authenticator placeholder module.
38 *
39 * This support is optional; it is only used when the 802.11 layer's
40 * authentication mode is set to use 802.1x or WPA is enabled separately
41 * (for WPA-PSK).  If compiled as a module this code does not need
42 * to be present unless 802.1x/WPA is in use.
43 *
44 * The authenticator hooks into the 802.11 layer.  At present we use none
45 * of the available callbacks--the user mode authenticator process works
46 * entirely from messages about stations joining and leaving.
47 */
48#include <sys/param.h>
49#include <sys/kernel.h>
50#include <sys/systm.h>
51#include <sys/mbuf.h>
52#include <sys/module.h>
53
54#include <sys/socket.h>
55
56#include <net/if.h>
57#include <net/if_media.h>
58#include <net/ethernet.h>
59#include <net/route.h>
60
61#include <net80211/ieee80211_var.h>
62
63/*
64 * One module handles everything for now.  May want
65 * to split things up for embedded applications.
66 */
67static const struct ieee80211_authenticator xauth = {
68	.ia_name	= "external",
69	.ia_attach	= NULL,
70	.ia_detach	= NULL,
71	.ia_node_join	= NULL,
72	.ia_node_leave	= NULL,
73};
74
75/*
76 * Module glue.
77 */
78static int
79wlan_xauth_modevent(module_t mod, int type, void *unused)
80{
81	switch (type) {
82	case MOD_LOAD:
83		ieee80211_authenticator_register(IEEE80211_AUTH_8021X, &xauth);
84		ieee80211_authenticator_register(IEEE80211_AUTH_WPA, &xauth);
85		return 0;
86	case MOD_UNLOAD:
87		ieee80211_authenticator_unregister(IEEE80211_AUTH_8021X);
88		ieee80211_authenticator_unregister(IEEE80211_AUTH_WPA);
89		return 0;
90	}
91	return EINVAL;
92}
93
94static moduledata_t wlan_xauth_mod = {
95	"wlan_xauth",
96	wlan_xauth_modevent,
97	0
98};
99DECLARE_MODULE(wlan_xauth, wlan_xauth_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
100MODULE_VERSION(wlan_xauth, 1);
101MODULE_DEPEND(wlan_xauth, wlan, 1, 1, 1);
102