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/* $FreeBSD$ */
/* $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $ */
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _NETINET_IP_ENCAP_H_
#define _NETINET_IP_ENCAP_H_
#ifdef _KERNEL
int encap4_input(struct mbuf **, int *, int);
int encap6_input(struct mbuf **, int *, int);
typedef int (*encap_lookup_t)(const struct mbuf *, int, int, void **);
typedef int (*encap_check_t)(const struct mbuf *, int, int, void *);
typedef int (*encap_input_t)(struct mbuf *, int, int, void *);
typedef void (*encap_srcaddr_t)(void *, const struct sockaddr *, int);
struct encap_config {
int proto; /* protocol */
int min_length; /* minimum packet length */
int max_hdrsize; /* maximum header size */
int exact_match; /* a packet is exactly matched */
#define ENCAP_DRV_LOOKUP 0x7fffffff
encap_lookup_t lookup;
encap_check_t check;
encap_input_t input;
void *pad[3];
};
struct encaptab;
struct srcaddrtab;
const struct encaptab *ip_encap_attach(const struct encap_config *,
void *arg, int mflags);
const struct encaptab *ip6_encap_attach(const struct encap_config *,
void *arg, int mflags);
const struct srcaddrtab *ip_encap_register_srcaddr(encap_srcaddr_t,
void *arg, int mflags);
const struct srcaddrtab *ip6_encap_register_srcaddr(encap_srcaddr_t,
void *arg, int mflags);
int ip_encap_unregister_srcaddr(const struct srcaddrtab *);
int ip6_encap_unregister_srcaddr(const struct srcaddrtab *);
int ip_encap_detach(const struct encaptab *);
int ip6_encap_detach(const struct encaptab *);
#endif
#endif /*_NETINET_IP_ENCAP_H_*/
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