70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
|
/*
|
||
|
|
* 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; /* Length of data, in 32bit */
|
||
|
|
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 struct ipcomp_algorithm ipcomp_algorithms[];
|
||
|
|
extern void ipcomp4_input __P((struct mbuf *, ...));
|
||
|
|
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_*/
|