sys/net/if_gif.h

   1 /*      $NetBSD: if_gif.h,v 1.18 2007/07/14 21:02:40 ad Exp $   */
   2 /*      $KAME: if_gif.h,v 1.23 2001/07/27 09:21:42 itojun Exp $ */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * if_gif.h
  35  */
  36
  37 #ifndef _NET_IF_GIF_H_
  38 #define _NET_IF_GIF_H_
  39
  40 #include <sys/queue.h>
  41
  42 #ifdef _KERNEL_OPT
  43 #include "opt_inet.h"
  44 #endif
  45
  46 #include <netinet/in.h>
  47 /* xxx sigh, why route have struct route instead of pointer? */
  48
  49 struct encaptab;
  50
  51 struct gif_softc {
  52         struct ifnet    gif_if;    /* common area - must be at the top */
  53         struct sockaddr *gif_psrc; /* Physical src addr */
  54         struct sockaddr *gif_pdst; /* Physical dst addr */
  55         union {
  56                 struct route  gifscr_ro;    /* xxx */
  57         } gifsc_gifscr;
  58         int             gif_flags;
  59         const struct encaptab *encap_cookie4;
  60         const struct encaptab *encap_cookie6;
  61         LIST_ENTRY(gif_softc) gif_list; /* list of all gifs */
  62         void    *gif_si;                /* softintr handle */
  63 };
  64 #define GIF_ROUTE_TTL   10
  65
  66 #define gif_ro gifsc_gifscr.gifscr_ro
  67
  68 #define GIF_MTU         (1280)  /* Default MTU */
  69 #define GIF_MTU_MIN     (1280)  /* Minimum MTU */
  70 #define GIF_MTU_MAX     (8192)  /* Maximum MTU */
  71
  72 /* Prototypes */
  73 void    gifattach0(struct gif_softc *);
  74 void    gif_input(struct mbuf *, int, struct ifnet *);
  75 int     gif_output(struct ifnet *, struct mbuf *,
  76                    const struct sockaddr *, struct rtentry *);
  77 int     gif_ioctl(struct ifnet *, u_long, void *);
  78 int     gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
  79 void    gif_delete_tunnel(struct ifnet *);
  80 #ifdef GIF_ENCAPCHECK
  81 int     gif_encapcheck(struct mbuf *, int, int, void *);
  82 #endif
  83
  84 #endif /* !_NET_IF_GIF_H_ */