2 /* $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $ */
5 * SPDX-License-Identifier: BSD-3-Clause
7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the project nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #ifndef _NETINET_IP_ENCAP_H_
37 #define _NETINET_IP_ENCAP_H_
41 int encap4_input(struct mbuf **, int *, int);
42 int encap6_input(struct mbuf **, int *, int);
44 typedef int (*encap_lookup_t)(const struct mbuf *, int, int, void **);
45 typedef int (*encap_check_t)(const struct mbuf *, int, int, void *);
46 typedef int (*encap_input_t)(struct mbuf *, int, int, void *);
47 typedef void (*encap_srcaddr_t)(void *, const struct sockaddr *, int);
50 int proto; /* protocol */
51 int min_length; /* minimum packet length */
52 int max_hdrsize; /* maximum header size */
53 int exact_match; /* a packet is exactly matched */
54 #define ENCAP_DRV_LOOKUP 0x7fffffff
56 encap_lookup_t lookup;
66 const struct encaptab *ip_encap_attach(const struct encap_config *,
67 void *arg, int mflags);
68 const struct encaptab *ip6_encap_attach(const struct encap_config *,
69 void *arg, int mflags);
71 const struct srcaddrtab *ip_encap_register_srcaddr(encap_srcaddr_t,
72 void *arg, int mflags);
73 const struct srcaddrtab *ip6_encap_register_srcaddr(encap_srcaddr_t,
74 void *arg, int mflags);
76 int ip_encap_unregister_srcaddr(const struct srcaddrtab *);
77 int ip6_encap_unregister_srcaddr(const struct srcaddrtab *);
78 int ip_encap_detach(const struct encaptab *);
79 int ip6_encap_detach(const struct encaptab *);
82 #endif /*_NETINET_IP_ENCAP_H_*/