projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (C) 1999 WIDE Project. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. Neither the name of the project nor the names of its contributors | |
| 14 | * may be used to endorse or promote products derived from this software | |
| 15 | * without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 | * SUCH DAMAGE. | |
| 28 | */ | |
| 29 | ||
| 30 | /* | |
| 31 | * RFC2393 IP payload compression protocol (IPComp). | |
| 32 | */ | |
| 33 | ||
| 34 | #ifndef _NETINET6_IPCOMP_H_ | |
| 35 | #define _NETINET6_IPCOMP_H_ | |
| 36 | ||
| 37 | struct ipcomp { | |
| 38 | u_int8_t comp_nxt; /* Next Header */ | |
| 39 | u_int8_t comp_flags; /* reserved, must be zero */ | |
| 40 | u_int16_t comp_cpi; /* Compression parameter index */ | |
| 41 | }; | |
| 42 | ||
| 43 | /* well-known algorithm number (in CPI), from RFC2409 */ | |
| 44 | #define IPCOMP_OUI 1 /* vendor specific */ | |
| 45 | #define IPCOMP_DEFLATE 2 /* RFC2394 */ | |
| 46 | #define IPCOMP_LZS 3 /* RFC2395 */ | |
| 47 | #define IPCOMP_MAX 4 | |
| 48 | ||
| 49 | #define IPCOMP_CPI_NEGOTIATE_MIN 256 | |
| 50 | ||
| 51 | #if defined(KERNEL) || defined(_KERNEL) | |
| 52 | struct ipcomp_algorithm { | |
| 53 | int (*compress) __P((struct mbuf *, struct mbuf *, size_t *)); | |
| 54 | int (*decompress) __P((struct mbuf *, struct mbuf *, size_t *)); | |
| 55 | size_t minplen; /* minimum required length for compression */ | |
| 56 | }; | |
| 57 | ||
| 58 | struct ipsecrequest; | |
| 59 | extern struct ipcomp_algorithm ipcomp_algorithms[]; | |
| 60 | extern void ipcomp4_input __P((struct mbuf *, int)); | |
| 61 | extern int ipcomp4_output __P((struct mbuf *, struct ipsecrequest *)); | |
| 62 | #if INET6 | |
| 63 | extern int ipcomp6_input __P((struct mbuf **, int *)); | |
| 64 | extern int ipcomp6_output __P((struct mbuf *, u_char *, struct mbuf *, | |
| 65 | struct ipsecrequest *)); | |
| 66 | #endif | |
| 67 | #endif /*KERNEL*/ | |
| 68 | ||
| 69 | #endif /*_NETINET6_IPCOMP_H_*/ |