sys/netproto/802_11/wlan_xauth/ieee80211_xauth.c

   1 /*-
   2  * Copyright (c) 2004 Video54 Technologies, Inc.
   3  * Copyright (c) 2004-2008 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  * $FreeBSD: head/sys/net80211/ieee80211_xauth.c 178354 2008-04-20 20:35:46Z sam $
  27  */
  28
  29 /*
  30  * External authenticator placeholder module.
  31  *
  32  * This support is optional; it is only used when the 802.11 layer's
  33  * authentication mode is set to use 802.1x or WPA is enabled separately
  34  * (for WPA-PSK).  If compiled as a module this code does not need
  35  * to be present unless 802.1x/WPA is in use.
  36  *
  37  * The authenticator hooks into the 802.11 layer.  At present we use none
  38  * of the available callbacks--the user mode authenticator process works
  39  * entirely from messages about stations joining and leaving.
  40  */
  41 #include "opt_wlan.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/kernel.h>
  45 #include <sys/systm.h>
  46 #include <sys/mbuf.h>
  47 #include <sys/module.h>
  48
  49 #include <sys/socket.h>
  50
  51 #include <net/if.h>
  52 #include <net/if_media.h>
  53 #include <net/ethernet.h>
  54 #include <net/route.h>
  55
  56 #include <netproto/802_11/ieee80211_var.h>
  57
  58 /* XXX number of references from net80211 layer; needed for module code */
  59 static  int nrefs = 0;
  60
  61 /*
  62  * One module handles everything for now.  May want
  63  * to split things up for embedded applications.
  64  */
  65 static const struct ieee80211_authenticator xauth = {
  66         .ia_name        = "external",
  67         .ia_attach      = NULL,
  68         .ia_detach      = NULL,
  69         .ia_node_join   = NULL,
  70         .ia_node_leave  = NULL,
  71 };
  72
  73 IEEE80211_AUTH_MODULE(xauth, 1);
  74 IEEE80211_AUTH_ALG(x8021x, IEEE80211_AUTH_8021X, xauth);
  75 IEEE80211_AUTH_ALG(wpa, IEEE80211_AUTH_WPA, xauth);