/* $FreeBSD: src/sys/netinet6/ipcomp.h,v 1.1.2.2 2001/07/03 11:01:54 ume Exp $ */ /* $KAME: ipcomp.h,v 1.8 2000/09/26 07:55:14 itojun 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_ #include <sys/appleapiopts.h> #include <netinet6/ipsec.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 #ifdef KERNEL_PRIVATE struct ipcomp_algorithm { int (*compress)(struct mbuf *, struct mbuf *, size_t *); int (*decompress)(struct mbuf *, struct mbuf *, size_t *); size_t minplen; /* minimum required length for compression */ }; struct ipsecrequest; extern const struct ipcomp_algorithm *ipcomp_algorithm_lookup(int); extern void ipcomp4_input(struct mbuf *, int); extern int ipcomp4_output(struct mbuf *, struct secasvar *); #endif /* KERNEL_PRIVATE */ #endif /* KERNEL */ #endif /* _NETINET6_IPCOMP_H_ */