if_gif.h revision 83997 
1/*	$FreeBSD: head/sys/net/if_gif.h 83997 2001-09-26 23:37:15Z brooks $	*/
2/*	$KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa 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
41#ifdef _KERNEL
42#include "opt_inet.h"
43#include "opt_inet6.h"
44
45#include <netinet/in.h>
46/* xxx sigh, why route have struct route instead of pointer? */
47
48struct encaptab;
49
50struct gif_softc {
51	struct ifnet	gif_if;	   /* common area - must be at the top */
52	struct sockaddr	*gif_psrc; /* Physical src addr */
53	struct sockaddr	*gif_pdst; /* Physical dst addr */
54	union {
55		struct route  gifscr_ro;    /* xxx */
56#ifdef INET6
57		struct route_in6 gifscr_ro6; /* xxx */
58#endif
59	} gifsc_gifscr;
60	int		gif_flags;
61	const struct encaptab *encap_cookie4;
62	const struct encaptab *encap_cookie6;
63	struct resource *r_unit;	/* resource allocated for this unit */
64	LIST_ENTRY(gif_softc) gif_link; /* all gif's are linked */
65};
66
67#define gif_ro gifsc_gifscr.gifscr_ro
68#ifdef INET6
69#define gif_ro6 gifsc_gifscr.gifscr_ro6
70#endif
71
72#define GIF_MTU		(1280)	/* Default MTU */
73#define	GIF_MTU_MIN	(1280)	/* Minimum MTU */
74#define	GIF_MTU_MAX	(8192)	/* Maximum MTU */
75
76/* Prototypes */
77void gif_input __P((struct mbuf *, int, struct ifnet *));
78int gif_output __P((struct ifnet *, struct mbuf *,
79		    struct sockaddr *, struct rtentry *));
80int gif_ioctl __P((struct ifnet *, u_long, caddr_t));
81
82#endif /* _KERNEL */
83
84#endif /* _NET_IF_GIF_H_ */
85