| 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 | /*␊ |
| 29 | * Copyright (c) 1982, 1986, 1993␊ |
| 30 | *␉The Regents of the University of California. All rights reserved.␊ |
| 31 | *␊ |
| 32 | * Redistribution and use in source and binary forms, with or without␊ |
| 33 | * modification, are permitted provided that the following conditions␊ |
| 34 | * are met:␊ |
| 35 | * 1. Redistributions of source code must retain the above copyright␊ |
| 36 | * notice, this list of conditions and the following disclaimer.␊ |
| 37 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 38 | * notice, this list of conditions and the following disclaimer in the␊ |
| 39 | * documentation and/or other materials provided with the distribution.␊ |
| 40 | * 3. All advertising materials mentioning features or use of this software␊ |
| 41 | * must display the following acknowledgement:␊ |
| 42 | *␉This product includes software developed by the University of␊ |
| 43 | *␉California, Berkeley and its contributors.␊ |
| 44 | * 4. Neither the name of the University nor the names of its contributors␊ |
| 45 | * may be used to endorse or promote products derived from this software␊ |
| 46 | * without specific prior written permission.␊ |
| 47 | *␊ |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 58 | * SUCH DAMAGE.␊ |
| 59 | *␊ |
| 60 | *␉@(#)ip.h␉8.2 (Berkeley) 6/1/94␊ |
| 61 | * $FreeBSD: src/sys/netinet/ip.h,v 1.17 1999/12/22 19:13:20 shin Exp $␊ |
| 62 | */␊ |
| 63 | ␊ |
| 64 | #ifndef _NETINET_IP_H_␊ |
| 65 | #define _NETINET_IP_H_␊ |
| 66 | #include <sys/appleapiopts.h>␊ |
| 67 | #include <sys/types.h>␉␉/* XXX temporary hack to get u_ types */␊ |
| 68 | #include <netinet/in.h>␊ |
| 69 | #include <netinet/in_systm.h>␊ |
| 70 | ␊ |
| 71 | ␊ |
| 72 | /*␊ |
| 73 | * Definitions for internet protocol version 4.␊ |
| 74 | * Per RFC 791, September 1981.␊ |
| 75 | */␊ |
| 76 | #define␉IPVERSION␉4␊ |
| 77 | ␊ |
| 78 | /*␊ |
| 79 | * Structure of an internet header, naked of options.␊ |
| 80 | */␊ |
| 81 | struct ip {␊ |
| 82 | #ifdef _IP_VHL␊ |
| 83 | ␉u_char␉ip_vhl;␉␉␉/* version << 4 | header length >> 2 */␊ |
| 84 | #else␊ |
| 85 | #if BYTE_ORDER == LITTLE_ENDIAN␊ |
| 86 | ␉u_int␉ip_hl:4,␉␉/* header length */␊ |
| 87 | ␉␉ip_v:4;␉␉␉/* version */␊ |
| 88 | #endif␊ |
| 89 | #if BYTE_ORDER == BIG_ENDIAN␊ |
| 90 | ␉u_int␉ip_v:4,␉␉␉/* version */␊ |
| 91 | ␉␉ip_hl:4;␉␉/* header length */␊ |
| 92 | #endif␊ |
| 93 | #endif /* not _IP_VHL */␊ |
| 94 | ␉u_char␉ip_tos;␉␉␉/* type of service */␊ |
| 95 | ␉u_short␉ip_len;␉␉␉/* total length */␊ |
| 96 | ␉u_short␉ip_id;␉␉␉/* identification */␊ |
| 97 | ␉u_short␉ip_off;␉␉␉/* fragment offset field */␊ |
| 98 | #define␉IP_RF 0x8000␉␉␉/* reserved fragment flag */␊ |
| 99 | #define␉IP_DF 0x4000␉␉␉/* dont fragment flag */␊ |
| 100 | #define␉IP_MF 0x2000␉␉␉/* more fragments flag */␊ |
| 101 | #define␉IP_OFFMASK 0x1fff␉␉/* mask for fragmenting bits */␊ |
| 102 | ␉u_char␉ip_ttl;␉␉␉/* time to live */␊ |
| 103 | ␉u_char␉ip_p;␉␉␉/* protocol */␊ |
| 104 | ␉u_short␉ip_sum;␉␉␉/* checksum */␊ |
| 105 | ␉struct␉in_addr ip_src,ip_dst;␉/* source and dest address */␊ |
| 106 | };␊ |
| 107 | ␊ |
| 108 | #ifdef _IP_VHL␊ |
| 109 | #define␉IP_MAKE_VHL(v, hl)␉((v) << 4 | (hl))␊ |
| 110 | #define␉IP_VHL_HL(vhl)␉␉((vhl) & 0x0f)␊ |
| 111 | #define␉IP_VHL_V(vhl)␉␉((vhl) >> 4)␊ |
| 112 | #define␉IP_VHL_BORING␉␉0x45␊ |
| 113 | #endif␊ |
| 114 | ␊ |
| 115 | #define␉IP_MAXPACKET␉65535␉␉/* maximum packet size */␊ |
| 116 | ␊ |
| 117 | /*␊ |
| 118 | * Definitions for IP type of service (ip_tos)␊ |
| 119 | */␊ |
| 120 | #define␉IPTOS_LOWDELAY␉␉0x10␊ |
| 121 | #define␉IPTOS_THROUGHPUT␉0x08␊ |
| 122 | #define␉IPTOS_RELIABILITY␉0x04␊ |
| 123 | #define␉IPTOS_MINCOST␉␉0x02␊ |
| 124 | #if 1␊ |
| 125 | /* ECN RFC3168 obsoletes RFC2481, and these will be deprecated soon. */␊ |
| 126 | #define␉IPTOS_CE␉␉0x01␊ |
| 127 | #define␉IPTOS_ECT␉␉0x02␊ |
| 128 | #endif␊ |
| 129 | ␊ |
| 130 | /*␊ |
| 131 | * ECN (Explicit Congestion Notification) codepoints in RFC3168␊ |
| 132 | * mapped to the lower 2 bits of the TOS field.␊ |
| 133 | */␊ |
| 134 | #define␉IPTOS_ECN_NOTECT␉0x00␉/* not-ECT */␊ |
| 135 | #define␉IPTOS_ECN_ECT1␉␉0x01␉/* ECN-capable transport (1) */␊ |
| 136 | #define␉IPTOS_ECN_ECT0␉␉0x02␉/* ECN-capable transport (0) */␊ |
| 137 | #define␉IPTOS_ECN_CE␉␉0x03␉/* congestion experienced */␊ |
| 138 | #define␉IPTOS_ECN_MASK␉␉0x03␉/* ECN field mask */␊ |
| 139 | ␊ |
| 140 | /*␊ |
| 141 | * Definitions for IP precedence (also in ip_tos) (hopefully unused)␊ |
| 142 | */␊ |
| 143 | #define␉IPTOS_PREC_NETCONTROL␉␉0xe0␊ |
| 144 | #define␉IPTOS_PREC_INTERNETCONTROL␉0xc0␊ |
| 145 | #define␉IPTOS_PREC_CRITIC_ECP␉␉0xa0␊ |
| 146 | #define␉IPTOS_PREC_FLASHOVERRIDE␉0x80␊ |
| 147 | #define␉IPTOS_PREC_FLASH␉␉0x60␊ |
| 148 | #define␉IPTOS_PREC_IMMEDIATE␉␉0x40␊ |
| 149 | #define␉IPTOS_PREC_PRIORITY␉␉0x20␊ |
| 150 | #define␉IPTOS_PREC_ROUTINE␉␉0x00␊ |
| 151 | ␊ |
| 152 | /*␊ |
| 153 | * Definitions for options.␊ |
| 154 | */␊ |
| 155 | #define␉IPOPT_COPIED(o)␉␉((o)&0x80)␊ |
| 156 | #define␉IPOPT_CLASS(o)␉␉((o)&0x60)␊ |
| 157 | #define␉IPOPT_NUMBER(o)␉␉((o)&0x1f)␊ |
| 158 | ␊ |
| 159 | #define␉IPOPT_CONTROL␉␉0x00␊ |
| 160 | #define␉IPOPT_RESERVED1␉␉0x20␊ |
| 161 | #define␉IPOPT_DEBMEAS␉␉0x40␊ |
| 162 | #define␉IPOPT_RESERVED2␉␉0x60␊ |
| 163 | ␊ |
| 164 | #define␉IPOPT_EOL␉␉0␉␉/* end of option list */␊ |
| 165 | #define␉IPOPT_NOP␉␉1␉␉/* no operation */␊ |
| 166 | ␊ |
| 167 | #define␉IPOPT_RR␉␉7␉␉/* record packet route */␊ |
| 168 | #define␉IPOPT_TS␉␉68␉␉/* timestamp */␊ |
| 169 | #define␉IPOPT_SECURITY␉␉130␉␉/* provide s,c,h,tcc */␊ |
| 170 | #define␉IPOPT_LSRR␉␉131␉␉/* loose source route */␊ |
| 171 | #define␉IPOPT_SATID␉␉136␉␉/* satnet id */␊ |
| 172 | #define␉IPOPT_SSRR␉␉137␉␉/* strict source route */␊ |
| 173 | #define␉IPOPT_RA␉␉148␉␉/* router alert */␊ |
| 174 | ␊ |
| 175 | /*␊ |
| 176 | * Offsets to fields in options other than EOL and NOP.␊ |
| 177 | */␊ |
| 178 | #define␉IPOPT_OPTVAL␉␉0␉␉/* option ID */␊ |
| 179 | #define␉IPOPT_OLEN␉␉1␉␉/* option length */␊ |
| 180 | #define IPOPT_OFFSET␉␉2␉␉/* offset within option */␊ |
| 181 | #define␉IPOPT_MINOFF␉␉4␉␉/* min value of above */␊ |
| 182 | ␊ |
| 183 | /*␊ |
| 184 | * Time stamp option structure.␊ |
| 185 | */␊ |
| 186 | struct␉ip_timestamp {␊ |
| 187 | ␉u_char␉ipt_code;␉␉/* IPOPT_TS */␊ |
| 188 | ␉u_char␉ipt_len;␉␉/* size of structure (variable) */␊ |
| 189 | ␉u_char␉ipt_ptr;␉␉/* index of current entry */␊ |
| 190 | #if BYTE_ORDER == LITTLE_ENDIAN␊ |
| 191 | ␉u_int␉ipt_flg:4,␉␉/* flags, see below */␊ |
| 192 | ␉␉ipt_oflw:4;␉␉/* overflow counter */␊ |
| 193 | #endif␊ |
| 194 | #if BYTE_ORDER == BIG_ENDIAN␊ |
| 195 | ␉u_int␉ipt_oflw:4,␉␉/* overflow counter */␊ |
| 196 | ␉␉ipt_flg:4;␉␉/* flags, see below */␊ |
| 197 | #endif␊ |
| 198 | ␉union ipt_timestamp {␊ |
| 199 | ␉␉n_long␉ipt_time[1];␊ |
| 200 | ␉␉struct␉ipt_ta {␊ |
| 201 | ␉␉␉struct in_addr ipt_addr;␊ |
| 202 | ␉␉␉n_long ipt_time;␊ |
| 203 | ␉␉} ipt_ta[1];␊ |
| 204 | ␉} ipt_timestamp;␊ |
| 205 | };␊ |
| 206 | ␊ |
| 207 | /* flag bits for ipt_flg */␊ |
| 208 | #define␉IPOPT_TS_TSONLY␉␉0␉␉/* timestamps only */␊ |
| 209 | #define␉IPOPT_TS_TSANDADDR␉1␉␉/* timestamps and addresses */␊ |
| 210 | #define␉IPOPT_TS_PRESPEC␉3␉␉/* specified modules only */␊ |
| 211 | ␊ |
| 212 | /* bits for security (not byte swapped) */␊ |
| 213 | #define␉IPOPT_SECUR_UNCLASS␉0x0000␊ |
| 214 | #define␉IPOPT_SECUR_CONFID␉0xf135␊ |
| 215 | #define␉IPOPT_SECUR_EFTO␉0x789a␊ |
| 216 | #define␉IPOPT_SECUR_MMMM␉0xbc4d␊ |
| 217 | #define␉IPOPT_SECUR_RESTR␉0xaf13␊ |
| 218 | #define␉IPOPT_SECUR_SECRET␉0xd788␊ |
| 219 | #define␉IPOPT_SECUR_TOPSECRET␉0x6bc5␊ |
| 220 | ␊ |
| 221 | /*␊ |
| 222 | * Internet implementation parameters.␊ |
| 223 | */␊ |
| 224 | #define␉MAXTTL␉␉255␉␉/* maximum time to live (seconds) */␊ |
| 225 | #define␉IPDEFTTL␉64␉␉/* default ttl, from RFC 1340 */␊ |
| 226 | #define␉IPFRAGTTL␉60␉␉/* time to live for frags, slowhz */␊ |
| 227 | #define␉IPTTLDEC␉1␉␉/* subtracted when forwarding */␊ |
| 228 | ␊ |
| 229 | #define␉IP_MSS␉␉576␉␉/* default maximum segment size */␊ |
| 230 | ␊ |
| 231 | #endif␊ |
| 232 | |
