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- /*
- * 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 struct ipcomp_algorithm ipcomp_algorithms[];
- extern void ipcomp4_input __P((struct mbuf *, int));
- extern int ipcomp4_output __P((struct mbuf *, struct ipsecrequest *));
- #if INET6
- extern int ipcomp6_input __P((struct mbuf **, int *));
- extern int ipcomp6_output __P((struct mbuf *, u_char *, struct mbuf *,
- struct ipsecrequest *));
- #endif
- #endif /*KERNEL*/
-
- #endif /*_NETINET6_IPCOMP_H_*/
-