1105197Ssam/* $FreeBSD$ */ 2105197Ssam/* $KAME: ipcomp.h,v 1.8 2000/09/26 07:55:14 itojun Exp $ */ 3105197Ssam 4139823Simp/*- 5105197Ssam * Copyright (C) 1999 WIDE Project. 6105197Ssam * All rights reserved. 7105197Ssam * 8105197Ssam * Redistribution and use in source and binary forms, with or without 9105197Ssam * modification, are permitted provided that the following conditions 10105197Ssam * are met: 11105197Ssam * 1. Redistributions of source code must retain the above copyright 12105197Ssam * notice, this list of conditions and the following disclaimer. 13105197Ssam * 2. Redistributions in binary form must reproduce the above copyright 14105197Ssam * notice, this list of conditions and the following disclaimer in the 15105197Ssam * documentation and/or other materials provided with the distribution. 16105197Ssam * 3. Neither the name of the project nor the names of its contributors 17105197Ssam * may be used to endorse or promote products derived from this software 18105197Ssam * without specific prior written permission. 19105197Ssam * 20105197Ssam * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21105197Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22105197Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23105197Ssam * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24105197Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25105197Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26105197Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27105197Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28105197Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29105197Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30105197Ssam * SUCH DAMAGE. 31105197Ssam */ 32105197Ssam 33105197Ssam/* 34105197Ssam * RFC2393 IP payload compression protocol (IPComp). 35105197Ssam */ 36105197Ssam 37105197Ssam#ifndef _NETIPSEC_IPCOMP_H_ 38105197Ssam#define _NETIPSEC_IPCOMP_H_ 39105197Ssam 40105197Ssamstruct ipcomp { 41105197Ssam u_int8_t comp_nxt; /* Next Header */ 42105197Ssam u_int8_t comp_flags; /* reserved, must be zero */ 43105197Ssam u_int16_t comp_cpi; /* Compression parameter index */ 44105197Ssam}; 45105197Ssam 46105197Ssam#define IPCOMP_HLENGTH 4 /* Length of IPCOMP header */ 47105197Ssam 48105197Ssam/* well-known algorithm number (in CPI), from RFC2409 */ 49105197Ssam#define IPCOMP_OUI 1 /* vendor specific */ 50105197Ssam#define IPCOMP_DEFLATE 2 /* RFC2394 */ 51105197Ssam#define IPCOMP_LZS 3 /* RFC2395 */ 52105197Ssam#define IPCOMP_MAX 4 53105197Ssam 54105197Ssam#define IPCOMP_CPI_NEGOTIATE_MIN 256 55105197Ssam#endif /*_NETIPSEC_IPCOMP_H_*/ 56