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_ */ 55