| 1 | /* $NetBSD: ipcomp.h,v 1.2 2005/12/10 23:44:08 elad Exp $ */ |
| 2 | /* $FreeBSD: src/sys/netipsec/ipcomp.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $ */ |
| 3 | /* $KAME: ipcomp.h,v 1.8 2000/09/26 07:55:14 itojun Exp $ */ |
| 4 | |
| 5 | /* |
| 6 | * Copyright (C) 1999 WIDE Project. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the project nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | /* |
| 35 | * RFC2393 IP payload compression protocol (IPComp). |
| 36 | */ |
| 37 | |
| 38 | #ifndef _NETIPSEC_IPCOMP_H_ |
| 39 | #define _NETIPSEC_IPCOMP_H_ |
| 40 | |
| 41 | struct ipcomp { |
| 42 | u_int8_t comp_nxt; /* Next Header */ |
| 43 | u_int8_t comp_flags; /* reserved, must be zero */ |
| 44 | u_int16_t comp_cpi; /* Compression parameter index */ |
| 45 | }; |
| 46 | |
| 47 | #define IPCOMP_HLENGTH 4 /* Length of IPCOMP header */ |
| 48 | |
| 49 | /* well-known algorithm number (in CPI), from RFC2409 */ |
| 50 | #define IPCOMP_OUI 1 /* vendor specific */ |
| 51 | #define IPCOMP_DEFLATE 2 /* RFC2394 */ |
| 52 | #define IPCOMP_LZS 3 /* RFC2395 */ |
| 53 | #define IPCOMP_MAX 4 |
| 54 | |
| 55 | #define IPCOMP_CPI_NEGOTIATE_MIN 256 |
| 56 | #endif /* !_NETIPSEC_IPCOMP_H_ */ |
| 57 | |