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freebsd/sys/netinet6/ipcomp.h
Jun-ichiro itojun Hagino 686cdd19b1 sync with kame tree as of july00. tons of bug fixes/improvements.
API changes:
- additional IPv6 ioctls
- IPsec PF_KEY API was changed, it is mandatory to upgrade setkey(8).
  (also syntax change)
2000-07-04 16:35:15 +00:00

68 lines
2.6 KiB
C

/* $FreeBSD$ */
/* $KAME: ipcomp.h,v 1.7 2000/05/18 12:45:13 sumikawa Exp $ */
/*
* Copyright (C) 1999 WIDE Project.
* 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.
*/
/*
* RFC2393 IP payload compression protocol (IPComp).
*/
#ifndef _NETINET6_IPCOMP_H_
#define _NETINET6_IPCOMP_H_
struct ipcomp {
u_int8_t comp_nxt; /* Next Header */
u_int8_t comp_flags; /* reserved, must be zero */
u_int16_t comp_cpi; /* Compression parameter index */
};
/* well-known algorithm number (in CPI), from RFC2409 */
#define IPCOMP_OUI 1 /* vendor specific */
#define IPCOMP_DEFLATE 2 /* RFC2394 */
#define IPCOMP_LZS 3 /* RFC2395 */
#define IPCOMP_MAX 4
#define IPCOMP_CPI_NEGOTIATE_MIN 256
#ifdef _KERNEL
struct ipcomp_algorithm {
int (*compress) __P((struct mbuf *, struct mbuf *, size_t *));
int (*decompress) __P((struct mbuf *, struct mbuf *, size_t *));
size_t minplen; /* minimum required length for compression */
};
struct ipsecrequest;
extern struct ipcomp_algorithm ipcomp_algorithms[];
extern void ipcomp4_input __P((struct mbuf *, ...));
extern int ipcomp4_output __P((struct mbuf *, struct ipsecrequest *));
#endif /*KERNEL*/
#endif /*_NETINET6_IPCOMP_H_*/