xref: /freebsd/sys/net80211/ieee80211_xauth.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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("$FreeBSD$");
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  */
61 static 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  */
72 static int
73 wlan_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 
88 static moduledata_t wlan_xauth_mod = {
89 	"wlan_xauth",
90 	wlan_xauth_modevent,
91 	0
92 };
93 DECLARE_MODULE(wlan_xauth, wlan_xauth_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
94 MODULE_VERSION(wlan_xauth, 1);
95 MODULE_DEPEND(wlan_xauth, wlan, 1, 1, 1);
96