The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_xauth.c

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    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: releng/7.4/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  */
   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);

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