FreeBSD/Linux Kernel Cross Reference
sys/net/if_gif.h

     /*      $NetBSD: if_gif.h,v 1.13 2005/12/11 23:05:25 thorpej Exp $      */
     /*      $KAME: if_gif.h,v 1.23 2001/07/27 09:21:42 itojun Exp $ */
     
     /*
      * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      * 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.
     * 3. Neither the name of the project nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
     */
    
    /*
     * if_gif.h
     */
    
    #ifndef _NET_IF_GIF_H_
    #define _NET_IF_GIF_H_
    
    #include <sys/queue.h>
    
    #if defined(_KERNEL) && !defined(_LKM)
    #include "opt_inet.h"
    #endif
    
    #include <netinet/in.h>
    /* xxx sigh, why route have struct route instead of pointer? */
    
    struct encaptab;
    
    struct gif_softc {
            struct ifnet    gif_if;    /* common area - must be at the top */
            struct sockaddr *gif_psrc; /* Physical src addr */
            struct sockaddr *gif_pdst; /* Physical dst addr */
            union {
                    struct route  gifscr_ro;    /* xxx */
    #ifdef INET6
                    struct route_in6 gifscr_ro6; /* xxx */
    #endif
            } gifsc_gifscr;
            int             gif_flags;
            const struct encaptab *encap_cookie4;
            const struct encaptab *encap_cookie6;
            LIST_ENTRY(gif_softc) gif_list; /* list of all gifs */
    #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
            void    *gif_si;                /* softintr handle */
    #endif
            long    gif_route_expire;
    };
    #define GIF_ROUTE_TTL   10
    
    #define gif_ro gifsc_gifscr.gifscr_ro
    #ifdef INET6
    #define gif_ro6 gifsc_gifscr.gifscr_ro6
    #endif
    
    #define GIF_MTU         (1280)  /* Default MTU */
    #define GIF_MTU_MIN     (1280)  /* Minimum MTU */
    #define GIF_MTU_MAX     (8192)  /* Maximum MTU */
    
    /* Prototypes */
    void    gifattach0(struct gif_softc *);
    void    gif_input(struct mbuf *, int, struct ifnet *);
    int     gif_output(struct ifnet *, struct mbuf *,
                       struct sockaddr *, struct rtentry *);
    int     gif_ioctl(struct ifnet *, u_long, caddr_t);
    int     gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
    void    gif_delete_tunnel(struct ifnet *);
    #ifdef GIF_ENCAPCHECK
    int     gif_encapcheck(struct mbuf *, int, int, void *);
    #endif
    
    #endif /* !_NET_IF_GIF_H_ */

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