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

     /*-
      * Copyright (c) 2004 Video54 Technologies, Inc.
      * Copyright (c) 2004-2007 Sam Leffler, Errno Consulting
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * External authenticator placeholder module.
     *
     * This support is optional; it is only used when the 802.11 layer's
     * authentication mode is set to use 802.1x or WPA is enabled separately
     * (for WPA-PSK).  If compiled as a module this code does not need
     * to be present unless 802.1x/WPA is in use.
     *
     * The authenticator hooks into the 802.11 layer.  At present we use none
     * of the available callbacks--the user mode authenticator process works
     * entirely from messages about stations joining and leaving.
     */
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/systm.h> 
    #include <sys/mbuf.h>   
    #include <sys/module.h>
    
    #include <sys/socket.h>
    
    #include <net/if.h>
    #include <net/if_media.h>
    #include <net/ethernet.h>
    #include <net/route.h>
    
    #include <net80211/ieee80211_var.h>
    
    /*
     * One module handles everything for now.  May want
     * to split things up for embedded applications.
     */
    static const struct ieee80211_authenticator xauth = {
            .ia_name        = "external",
            .ia_attach      = NULL,
            .ia_detach      = NULL,
            .ia_node_join   = NULL,
            .ia_node_leave  = NULL,
    };
    
    /*
     * Module glue.
     */
    static int
    wlan_xauth_modevent(module_t mod, int type, void *unused)
    {
            switch (type) {
            case MOD_LOAD:
                    ieee80211_authenticator_register(IEEE80211_AUTH_8021X, &xauth);
                    ieee80211_authenticator_register(IEEE80211_AUTH_WPA, &xauth);
                    return 0;
            case MOD_UNLOAD:
                    ieee80211_authenticator_unregister(IEEE80211_AUTH_8021X);
                    ieee80211_authenticator_unregister(IEEE80211_AUTH_WPA);
                    return 0;
            }
            return EINVAL;
    }
    
    static moduledata_t wlan_xauth_mod = {
            "wlan_xauth",
            wlan_xauth_modevent,
            0
    };
    DECLARE_MODULE(wlan_xauth, wlan_xauth_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
    MODULE_VERSION(wlan_xauth, 1);
    MODULE_DEPEND(wlan_xauth, wlan, 1, 1, 1);

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