1/* $NetBSD: if_gif.h,v 1.24 2016/06/24 04:38:12 knakahara 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
49struct encaptab;
50
51struct 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};
63#define GIF_ROUTE_TTL 10
64
65#define gif_ro gifsc_gifscr.gifscr_ro
66
67#define GIF_MTU (1280) /* Default MTU */
68#define GIF_MTU_MIN (1280) /* Minimum MTU */
69#define GIF_MTU_MAX (8192) /* Maximum MTU */
70
71/* Prototypes */
72void gif_input(struct mbuf *, int, struct ifnet *);
73
74#ifdef GIF_ENCAPCHECK
75int gif_encapcheck(struct mbuf *, int, int, void *);
76#endif
77
78/*
79 * Locking notes:
80 * - All members of struct si_sync are protected by si_lock (an adaptive mutex)
81 */
82#endif /* !_NET_IF_GIF_H_ */
83