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//==========================================================================
//
// include/netinet6/ipcomp.h
//
//==========================================================================
// ####BSDCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
//
// Portions of this software may have been derived from FreeBSD
// or other sources, and if so are covered by the appropriate copyright
// and license included herein.
//
// Portions created by the Free Software Foundation are
// Copyright (C) 2002 Free Software Foundation, Inc.
// -------------------------------------------
// ####BSDCOPYRIGHTEND####
//==========================================================================
/* $KAME: ipcomp.h,v 1.11 2001/09/04 08:43:19 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_
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
#if defined(KERNEL) || defined(_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 const struct ipcomp_algorithm *ipcomp_algorithm_lookup __P((int));
#if (defined(__FreeBSD__) && __FreeBSD__ >= 4)
extern void ipcomp4_input __P((struct mbuf *, int));
#else
extern void ipcomp4_input __P((struct mbuf *, ...));
#endif /* (defined(__FreeBSD__) && __FreeBSD__ >= 4) */
extern int ipcomp4_output __P((struct mbuf *, struct ipsecrequest *));
#ifdef INET6
extern int ipcomp6_input __P((struct mbuf **, int *, int));
extern int ipcomp6_output __P((struct mbuf *, u_char *, struct mbuf *,
struct ipsecrequest *));
#endif
#endif /* KERNEL */
#endif /* _NETINET6_IPCOMP_H_ */
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