| | 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_*/ |
projects / apple / xnu.git / blame_incremental