1 /* $NetBSD: in6_gif.h,v 1.18 2019/10/30 03:45:59 knakahara Exp $ */
2 /* $KAME: in6_gif.h,v 1.7 2001/07/26 06:53:16 jinmei 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 #ifndef _NETINET6_IN6_GIF_H_
34 #define _NETINET6_IN6_GIF_H_
35
36 #define GIF_HLIM 30
37 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
38 extern int ip6_gif_pmtu; /* Default Path MTU setting for gif tunnels */
39
40 #define GIF_PMTU_SYSDEFAULT -1 /* Use system default value (ip6_gif_pmtu) */
41 #define GIF_PMTU_MINMTU 0 /* Fragmented by IPV6_MINMTU */
42 #define GIF_PMTU_OUTERMTU 1 /* Fragmented by Path MTU of outer path */
43
44 struct gif_variant;
45 struct sockaddr;
46 int in6_gif_input(struct mbuf **, int *, int, void *);
47 #ifdef GIF_ENCAPCHECK
48 int gif_encapcheck6(struct mbuf *, int, int, struct gif_variant *);
49 #endif
50 int in6_gif_attach(struct gif_variant *);
51 int in6_gif_detach(struct gif_variant *);
52 void *in6_gif_ctlinput(int, const struct sockaddr *, void *, void *);
53
54 #endif /* !_NETINET6_IN6_GIF_H_ */
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