1 /* $FreeBSD: src/sys/netipsec/ipcomp.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $ */
2 /* $DragonFly: src/sys/netproto/ipsec/ipcomp.h,v 1.2 2003/06/17 04:28:53 dillon Exp $ */
3 /* $KAME: ipcomp.h,v 1.8 2000/09/26 07:55:14 itojun Exp $ */
6 * Copyright (C) 1999 WIDE Project.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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13 * notice, this list of conditions and the following disclaimer.
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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.
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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35 * RFC2393 IP payload compression protocol (IPComp).
38 #ifndef _NETIPSEC_IPCOMP_H_
39 #define _NETIPSEC_IPCOMP_H_
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 */
47 #define IPCOMP_HLENGTH 4 /* Length of IPCOMP header */
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 */
55 #define IPCOMP_CPI_NEGOTIATE_MIN 256
56 #endif /*_NETIPSEC_IPCOMP_H_*/