sys/net/gif/if_gif.h

   1 /*      $FreeBSD: src/sys/net/if_gif.h,v 1.2.2.5 2002/11/08 16:23:08 ume Exp $  */
   2 /*      $DragonFly: src/sys/net/gif/if_gif.h,v 1.4 2004/03/23 22:19:06 hsu Exp $        */
   3 /*      $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $       */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * if_gif.h
  36  */
  37
  38 #ifndef _NET_IF_GIF_H_
  39 #define _NET_IF_GIF_H_
  40
  41
  42 #if defined(_KERNEL) && !defined(_LKM)
  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 #ifdef INET6
  58                 struct route_in6 gifscr_ro6; /* xxx */
  59 #endif
  60         } gifsc_gifscr;
  61         int             gif_flags;
  62         const struct encaptab *encap_cookie4;
  63         const struct encaptab *encap_cookie6;
  64         struct resource *r_unit;        /* resource allocated for this unit */
  65         LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */
  66 };
  67
  68 #define gif_ro gifsc_gifscr.gifscr_ro
  69 #ifdef INET6
  70 #define gif_ro6 gifsc_gifscr.gifscr_ro6
  71 #endif
  72
  73 #define GIF_MTU         (1280)  /* Default MTU */
  74 #define GIF_MTU_MIN     (1280)  /* Minimum MTU */
  75 #define GIF_MTU_MAX     (8192)  /* Maximum MTU */
  76
  77 /* Prototypes */
  78 void gifattach0 (struct gif_softc *);
  79 void gif_input (struct mbuf *, int, struct ifnet *);
  80 int gif_output (struct ifnet *, struct mbuf *,
  81                     struct sockaddr *, struct rtentry *);
  82 int gif_ioctl (struct ifnet *, u_long, caddr_t, struct ucred *);
  83 int gif_set_tunnel (struct ifnet *, struct sockaddr *, struct sockaddr *);
  84 void gif_delete_tunnel (struct ifnet *);
  85 int gif_encapcheck (const struct mbuf *, int, int, void *);
  86
  87 #endif /* _NET_IF_GIF_H_ */