| 1 | /*␊ |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␉$KAME: ip6.h,v 1.18 2001/03/29 05:34:30 itojun Exp $*/␊ |
| 29 | ␊ |
| 30 | /*␊ |
| 31 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.␊ |
| 32 | * All rights reserved.␊ |
| 33 | *␊ |
| 34 | * Redistribution and use in source and binary forms, with or without␊ |
| 35 | * modification, are permitted provided that the following conditions␊ |
| 36 | * are met:␊ |
| 37 | * 1. Redistributions of source code must retain the above copyright␊ |
| 38 | * notice, this list of conditions and the following disclaimer.␊ |
| 39 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 40 | * notice, this list of conditions and the following disclaimer in the␊ |
| 41 | * documentation and/or other materials provided with the distribution.␊ |
| 42 | * 3. Neither the name of the project nor the names of its contributors␊ |
| 43 | * may be used to endorse or promote products derived from this software␊ |
| 44 | * without specific prior written permission.␊ |
| 45 | *␊ |
| 46 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND␊ |
| 47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE␊ |
| 50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 56 | * SUCH DAMAGE.␊ |
| 57 | */␊ |
| 58 | ␊ |
| 59 | /*␊ |
| 60 | * Copyright (c) 1982, 1986, 1993␊ |
| 61 | *␉The Regents of the University of California. All rights reserved.␊ |
| 62 | *␊ |
| 63 | * Redistribution and use in source and binary forms, with or without␊ |
| 64 | * modification, are permitted provided that the following conditions␊ |
| 65 | * are met:␊ |
| 66 | * 1. Redistributions of source code must retain the above copyright␊ |
| 67 | * notice, this list of conditions and the following disclaimer.␊ |
| 68 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 69 | * notice, this list of conditions and the following disclaimer in the␊ |
| 70 | * documentation and/or other materials provided with the distribution.␊ |
| 71 | * 3. All advertising materials mentioning features or use of this software␊ |
| 72 | * must display the following acknowledgement:␊ |
| 73 | *␉This product includes software developed by the University of␊ |
| 74 | *␉California, Berkeley and its contributors.␊ |
| 75 | * 4. Neither the name of the University nor the names of its contributors␊ |
| 76 | * may be used to endorse or promote products derived from this software␊ |
| 77 | * without specific prior written permission.␊ |
| 78 | *␊ |
| 79 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
| 80 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 81 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 82 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
| 83 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 84 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 85 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 86 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 87 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 88 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 89 | * SUCH DAMAGE.␊ |
| 90 | *␊ |
| 91 | *␉@(#)ip.h␉8.1 (Berkeley) 6/10/93␊ |
| 92 | */␊ |
| 93 | ␊ |
| 94 | #ifndef _NETINET_IP6_H_␊ |
| 95 | #define _NETINET_IP6_H_␊ |
| 96 | #include <sys/appleapiopts.h>␊ |
| 97 | ␊ |
| 98 | /*␊ |
| 99 | * Definition for internet protocol version 6.␊ |
| 100 | * RFC 2460␊ |
| 101 | */␊ |
| 102 | ␊ |
| 103 | struct ip6_hdr {␊ |
| 104 | ␉union {␊ |
| 105 | ␉␉struct ip6_hdrctl {␊ |
| 106 | ␉␉␉u_int32_t ip6_un1_flow;␉/* 20 bits of flow-ID */␊ |
| 107 | ␉␉␉u_int16_t ip6_un1_plen;␉/* payload length */␊ |
| 108 | ␉␉␉u_int8_t ip6_un1_nxt;␉/* next header */␊ |
| 109 | ␉␉␉u_int8_t ip6_un1_hlim;␉/* hop limit */␊ |
| 110 | ␉␉} ip6_un1;␊ |
| 111 | ␉␉u_int8_t ip6_un2_vfc;␉/* 4 bits version, top 4 bits class */␊ |
| 112 | ␉} ip6_ctlun;␊ |
| 113 | ␉struct in6_addr ip6_src;␉/* source address */␊ |
| 114 | ␉struct in6_addr ip6_dst;␉/* destination address */␊ |
| 115 | } __attribute__((__packed__));␊ |
| 116 | ␊ |
| 117 | #define ip6_vfc␉␉ip6_ctlun.ip6_un2_vfc␊ |
| 118 | #define ip6_flow␉ip6_ctlun.ip6_un1.ip6_un1_flow␊ |
| 119 | #define ip6_plen␉ip6_ctlun.ip6_un1.ip6_un1_plen␊ |
| 120 | #define ip6_nxt␉␉ip6_ctlun.ip6_un1.ip6_un1_nxt␊ |
| 121 | #define ip6_hlim␉ip6_ctlun.ip6_un1.ip6_un1_hlim␊ |
| 122 | #define ip6_hops␉ip6_ctlun.ip6_un1.ip6_un1_hlim␊ |
| 123 | ␊ |
| 124 | #define IPV6_VERSION␉␉0x60␊ |
| 125 | #define IPV6_VERSION_MASK␉0xf0␊ |
| 126 | ␊ |
| 127 | #if BYTE_ORDER == BIG_ENDIAN␊ |
| 128 | #define IPV6_FLOWINFO_MASK␉0x0fffffff␉/* flow info (28 bits) */␊ |
| 129 | #define IPV6_FLOWLABEL_MASK␉0x000fffff␉/* flow label (20 bits) */␊ |
| 130 | #else␊ |
| 131 | #if BYTE_ORDER == LITTLE_ENDIAN␊ |
| 132 | #define IPV6_FLOWINFO_MASK␉0xffffff0f␉/* flow info (28 bits) */␊ |
| 133 | #define IPV6_FLOWLABEL_MASK␉0xffff0f00␉/* flow label (20 bits) */␊ |
| 134 | #endif /* LITTLE_ENDIAN */␊ |
| 135 | #endif␊ |
| 136 | #if 1␊ |
| 137 | /* ECN bits proposed by Sally Floyd */␊ |
| 138 | #define IP6TOS_CE␉␉0x01␉/* congestion experienced */␊ |
| 139 | #define IP6TOS_ECT␉␉0x02␉/* ECN-capable transport */␊ |
| 140 | #endif␊ |
| 141 | ␊ |
| 142 | /*␊ |
| 143 | * Extension Headers␊ |
| 144 | */␊ |
| 145 | ␊ |
| 146 | struct␉ip6_ext {␊ |
| 147 | ␉u_int8_t ip6e_nxt;␊ |
| 148 | ␉u_int8_t ip6e_len;␊ |
| 149 | } __attribute__((__packed__));␊ |
| 150 | ␊ |
| 151 | /* Hop-by-Hop options header */␊ |
| 152 | /* XXX should we pad it to force alignment on an 8-byte boundary? */␊ |
| 153 | struct ip6_hbh {␊ |
| 154 | ␉u_int8_t ip6h_nxt;␉/* next header */␊ |
| 155 | ␉u_int8_t ip6h_len;␉/* length in units of 8 octets */␊ |
| 156 | ␉/* followed by options */␊ |
| 157 | } __attribute__((__packed__));␊ |
| 158 | ␊ |
| 159 | /* Destination options header */␊ |
| 160 | /* XXX should we pad it to force alignment on an 8-byte boundary? */␊ |
| 161 | struct ip6_dest {␊ |
| 162 | ␉u_int8_t ip6d_nxt;␉/* next header */␊ |
| 163 | ␉u_int8_t ip6d_len;␉/* length in units of 8 octets */␊ |
| 164 | ␉/* followed by options */␊ |
| 165 | } __attribute__((__packed__));␊ |
| 166 | ␊ |
| 167 | /* Option types and related macros */␊ |
| 168 | #define IP6OPT_PAD1␉␉0x00␉/* 00 0 00000 */␊ |
| 169 | #define IP6OPT_PADN␉␉0x01␉/* 00 0 00001 */␊ |
| 170 | #define IP6OPT_JUMBO␉␉0xC2␉/* 11 0 00010 = 194 */␊ |
| 171 | #define IP6OPT_NSAP_ADDR␉0xC3␉/* 11 0 00011 */␊ |
| 172 | #define IP6OPT_TUNNEL_LIMIT␉0x04␉/* 00 0 00100 */␊ |
| 173 | #define IP6OPT_RTALERT␉␉0x05␉/* 00 0 00101 (KAME definition) */␊ |
| 174 | ␊ |
| 175 | #define IP6OPT_RTALERT_LEN␉4␊ |
| 176 | #define IP6OPT_RTALERT_MLD␉0␉/* Datagram contains an MLD message */␊ |
| 177 | #define IP6OPT_RTALERT_RSVP␉1␉/* Datagram contains an RSVP message */␊ |
| 178 | #define IP6OPT_RTALERT_ACTNET␉2 ␉/* contains an Active Networks msg */␊ |
| 179 | #define IP6OPT_MINLEN␉␉2␊ |
| 180 | ␊ |
| 181 | #define IP6OPT_BINDING_UPDATE␉0xc6␉/* 11 0 00110 */␊ |
| 182 | #define IP6OPT_BINDING_ACK␉0x07␉/* 00 0 00111 */␊ |
| 183 | #define IP6OPT_BINDING_REQ␉0x08␉/* 00 0 01000 */␊ |
| 184 | #define IP6OPT_HOME_ADDRESS␉0xc9␉/* 11 0 01001 */␊ |
| 185 | #define IP6OPT_EID␉␉0x8a␉/* 10 0 01010 */␊ |
| 186 | ␊ |
| 187 | #define IP6OPT_TYPE(o)␉␉((o) & 0xC0)␊ |
| 188 | #define IP6OPT_TYPE_SKIP␉0x00␊ |
| 189 | #define IP6OPT_TYPE_DISCARD␉0x40␊ |
| 190 | #define IP6OPT_TYPE_FORCEICMP␉0x80␊ |
| 191 | #define IP6OPT_TYPE_ICMP␉0xC0␊ |
| 192 | ␊ |
| 193 | #define IP6OPT_MUTABLE␉␉0x20␊ |
| 194 | ␊ |
| 195 | #define IP6OPT_JUMBO_LEN␉6␊ |
| 196 | ␊ |
| 197 | /* Routing header */␊ |
| 198 | struct ip6_rthdr {␊ |
| 199 | ␉u_int8_t ip6r_nxt;␉/* next header */␊ |
| 200 | ␉u_int8_t ip6r_len;␉/* length in units of 8 octets */␊ |
| 201 | ␉u_int8_t ip6r_type;␉/* routing type */␊ |
| 202 | ␉u_int8_t ip6r_segleft;␉/* segments left */␊ |
| 203 | ␉/* followed by routing type specific data */␊ |
| 204 | } __attribute__((__packed__));␊ |
| 205 | ␊ |
| 206 | /* Type 0 Routing header */␊ |
| 207 | struct ip6_rthdr0 {␊ |
| 208 | ␉u_int8_t ip6r0_nxt;␉␉/* next header */␊ |
| 209 | ␉u_int8_t ip6r0_len;␉␉/* length in units of 8 octets */␊ |
| 210 | ␉u_int8_t ip6r0_type;␉␉/* always zero */␊ |
| 211 | ␉u_int8_t ip6r0_segleft;␉/* segments left */␊ |
| 212 | ␉u_int8_t ip6r0_reserved;␉/* reserved field */␊ |
| 213 | ␉u_int8_t ip6r0_slmap[3];␉/* strict/loose bit map */␊ |
| 214 | ␉struct in6_addr ip6r0_addr[1];␉/* up to 23 addresses */␊ |
| 215 | } __attribute__((__packed__));␊ |
| 216 | ␊ |
| 217 | /* Fragment header */␊ |
| 218 | struct ip6_frag {␊ |
| 219 | ␉u_int8_t ip6f_nxt;␉␉/* next header */␊ |
| 220 | ␉u_int8_t ip6f_reserved;␉/* reserved field */␊ |
| 221 | ␉u_int16_t ip6f_offlg;␉␉/* offset, reserved, and flag */␊ |
| 222 | ␉u_int32_t ip6f_ident;␉␉/* identification */␊ |
| 223 | } __attribute__((__packed__));␊ |
| 224 | ␊ |
| 225 | #if BYTE_ORDER == BIG_ENDIAN␊ |
| 226 | #define IP6F_OFF_MASK␉␉0xfff8␉/* mask out offset from _offlg */␊ |
| 227 | #define IP6F_RESERVED_MASK␉0x0006␉/* reserved bits in ip6f_offlg */␊ |
| 228 | #define IP6F_MORE_FRAG␉␉0x0001␉/* more-fragments flag */␊ |
| 229 | #else /* BYTE_ORDER == LITTLE_ENDIAN */␊ |
| 230 | #define IP6F_OFF_MASK␉␉0xf8ff␉/* mask out offset from _offlg */␊ |
| 231 | #define IP6F_RESERVED_MASK␉0x0600␉/* reserved bits in ip6f_offlg */␊ |
| 232 | #define IP6F_MORE_FRAG␉␉0x0100␉/* more-fragments flag */␊ |
| 233 | #endif /* BYTE_ORDER == LITTLE_ENDIAN */␊ |
| 234 | ␊ |
| 235 | /*␊ |
| 236 | * Internet implementation parameters.␊ |
| 237 | */␊ |
| 238 | #define IPV6_MAXHLIM␉255␉/* maximun hoplimit */␊ |
| 239 | #define IPV6_DEFHLIM␉64␉/* default hlim */␊ |
| 240 | #define IPV6_FRAGTTL␉120␉/* ttl for fragment packets, in slowtimo tick */␊ |
| 241 | #define IPV6_HLIMDEC␉1␉/* subtracted when forwaeding */␊ |
| 242 | ␊ |
| 243 | #define IPV6_MMTU␉1280␉/* minimal MTU and reassembly. 1024 + 256 */␊ |
| 244 | #define IPV6_MAXPACKET␉65535␉/* ip6 max packet size without Jumbo payload*/␊ |
| 245 | ␊ |
| 246 | #endif /* !_NETINET_IP6_H_ */␊ |
| 247 | |
