ieee80211_xauth.c revision 170360 
1/*-
2 * Copyright (c) 2004 Video54 Technologies, Inc.
3 * Copyright (c) 2004-2007 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_xauth.c 170360 2007-06-06 04:56:04Z sam $");
29
30/*
31 * External authenticator placeholder module.
32 *
33 * This support is optional; it is only used when the 802.11 layer's
34 * authentication mode is set to use 802.1x or WPA is enabled separately
35 * (for WPA-PSK).  If compiled as a module this code does not need
36 * to be present unless 802.1x/WPA is in use.
37 *
38 * The authenticator hooks into the 802.11 layer.  At present we use none
39 * of the available callbacks--the user mode authenticator process works
40 * entirely from messages about stations joining and leaving.
41 */
42#include <sys/param.h>
43#include <sys/kernel.h>
44#include <sys/systm.h>
45#include <sys/mbuf.h>
46#include <sys/module.h>
47
48#include <sys/socket.h>
49
50#include <net/if.h>
51#include <net/if_media.h>
52#include <net/ethernet.h>
53#include <net/route.h>
54
55#include <net80211/ieee80211_var.h>
56
57/*
58 * One module handles everything for now.  May want
59 * to split things up for embedded applications.
60 */
61static const struct ieee80211_authenticator xauth = {
62	.ia_name	= "external",
63	.ia_attach	= NULL,
64	.ia_detach	= NULL,
65	.ia_node_join	= NULL,
66	.ia_node_leave	= NULL,
67};
68
69/*
70 * Module glue.
71 */
72static int
73wlan_xauth_modevent(module_t mod, int type, void *unused)
74{
75	switch (type) {
76	case MOD_LOAD:
77		ieee80211_authenticator_register(IEEE80211_AUTH_8021X, &xauth);
78		ieee80211_authenticator_register(IEEE80211_AUTH_WPA, &xauth);
79		return 0;
80	case MOD_UNLOAD:
81		ieee80211_authenticator_unregister(IEEE80211_AUTH_8021X);
82		ieee80211_authenticator_unregister(IEEE80211_AUTH_WPA);
83		return 0;
84	}
85	return EINVAL;
86}
87
88static moduledata_t wlan_xauth_mod = {
89	"wlan_xauth",
90	wlan_xauth_modevent,
91	0
92};
93DECLARE_MODULE(wlan_xauth, wlan_xauth_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
94MODULE_VERSION(wlan_xauth, 1);
95MODULE_DEPEND(wlan_xauth, wlan, 1, 1, 1);
96