| 1 | /* Modified for emx by hv 1994,1996
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| 2 | * Modified for gcc/os2 by bird 2003
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| 3 | *
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| 4 | * Copyright (c) 1982, 1986 Regents of the University of California.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * 3. All advertising materials mentioning features or use of this software
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| 16 | * must display the following acknowledgement:
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| 17 | * This product includes software developed by the University of
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| 18 | * California, Berkeley and its contributors.
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| 19 | * 4. Neither the name of the University nor the names of its contributors
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| 20 | * may be used to endorse or promote products derived from this software
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| 21 | * without specific prior written permission.
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| 22 | *
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| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 33 | * SUCH DAMAGE.
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| 34 | *
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| 35 | * from: @(#)ip.h 7.10 (Berkeley) 6/28/90
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| 36 | * $Id: ip.h,v 1.4 1994/01/08 21:21:44 mycroft Exp $
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| 37 | */
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| 38 |
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| 39 | #ifndef _NETINET_IP_H_
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| 40 | #define _NETINET_IP_H_
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| 41 |
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| 42 | #include <machine/endian.h>
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| 43 |
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| 44 | /*
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| 45 | * Definitions for internet protocol version 4.
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| 46 | * Per RFC 791, September 1981.
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| 47 | */
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| 48 | #define IPVERSION 4
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| 49 |
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| 50 | /*
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| 51 | * Structure of an internet header, naked of options.
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| 52 | *
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| 53 | * We declare ip_len and ip_off to be short, rather than u_short
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| 54 | * pragmatically since otherwise unsigned comparisons can result
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| 55 | * against negative integers quite easily, and fail in subtle ways.
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| 56 | */
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| 57 | #pragma pack(1)
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| 58 | struct ip {
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| 59 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 60 | u_char ip_hl:4, /* header length */
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| 61 | ip_v:4; /* version */
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| 62 | #endif
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| 63 | #if BYTE_ORDER == BIG_ENDIAN
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| 64 | u_char ip_v:4, /* version */
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| 65 | ip_hl:4; /* header length */
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| 66 | #endif
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| 67 | u_char ip_tos; /* type of service */
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| 68 | short ip_len; /* total length */
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| 69 | u_short ip_id; /* identification */
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| 70 | short ip_off; /* fragment offset field */
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| 71 | #define IP_DF 0x4000 /* dont fragment flag */
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| 72 | #define IP_MF 0x2000 /* more fragments flag */
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| 73 | #ifndef TCPV40HDRS
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| 74 | #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
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| 75 | #endif
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| 76 | u_char ip_ttl; /* time to live */
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| 77 | u_char ip_p; /* protocol */
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| 78 | u_short ip_sum; /* checksum */
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| 79 | struct in_addr ip_src,ip_dst; /* source and dest address */
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| 80 | };
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| 81 | #pragma pack()
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| 82 |
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| 83 | #ifdef TCPV40HDRS
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| 84 | #define IP_MAXPACKET 32767 /* OS2 maximum packet size */
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| 85 | #else
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| 86 | #define IP_MAXPACKET 65535 /* maximum packet size */
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| 87 | #endif
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| 88 |
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| 89 | /*
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| 90 | * Definitions for IP type of service (ip_tos)
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| 91 | */
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| 92 | #define IPTOS_LOWDELAY 0x10
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| 93 | #define IPTOS_THROUGHPUT 0x08
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| 94 | #define IPTOS_RELIABILITY 0x04
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| 95 |
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| 96 | /*
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| 97 | * Definitions for IP precedence (also in ip_tos) (hopefully unused)
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| 98 | */
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| 99 | #define IPTOS_PREC_NETCONTROL 0xe0
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| 100 | #define IPTOS_PREC_INTERNETCONTROL 0xc0
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| 101 | #define IPTOS_PREC_CRITIC_ECP 0xa0
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| 102 | #define IPTOS_PREC_FLASHOVERRIDE 0x80
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| 103 | #define IPTOS_PREC_FLASH 0x60
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| 104 | #define IPTOS_PREC_IMMEDIATE 0x40
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| 105 | #define IPTOS_PREC_PRIORITY 0x20
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| 106 | #ifdef TCPV40HDRS
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| 107 | #define IPTOS_PREC_ROUTINE 0x10
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| 108 | #else
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| 109 | #define IPTOS_PREC_ROUTINE 0x00
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| 110 | #endif
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| 111 |
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| 112 | /*
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| 113 | * Definitions for options.
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| 114 | */
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| 115 | #ifndef TCPV40HDRS
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| 116 | #define IPOPT_COPY 0x80
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| 117 | #endif
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| 118 | #define IPOPT_COPIED(o) ((o)&0x80)
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| 119 | #define IPOPT_CLASS(o) ((o)&0x60)
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| 120 | #define IPOPT_NUMBER(o) ((o)&0x1f)
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| 121 |
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| 122 | #define IPOPT_CONTROL 0x00
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| 123 | #define IPOPT_RESERVED1 0x20
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| 124 | #define IPOPT_DEBMEAS 0x40
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| 125 | #define IPOPT_RESERVED2 0x60
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| 126 |
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| 127 | #define IPOPT_EOL 0 /* end of option list */
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| 128 | #define IPOPT_NOP 1 /* no operation */
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| 129 |
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| 130 | #define IPOPT_RR 7 /* record packet route */
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| 131 | #define IPOPT_TS 68 /* timestamp */
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| 132 | #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
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| 133 | #define IPOPT_LSRR 131 /* loose source route */
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| 134 | #define IPOPT_SATID 136 /* satnet id */
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| 135 | #define IPOPT_SSRR 137 /* strict source route */
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| 136 | #ifndef TCPV40HDRS
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| 137 | #define IPOPT_RALERT 148 /* router alert */
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| 138 | #endif
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| 139 |
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| 140 | /*
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| 141 | * Offsets to fields in options other than EOL and NOP.
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| 142 | */
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| 143 | #define IPOPT_OPTVAL 0 /* option ID */
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| 144 | #define IPOPT_OLEN 1 /* option length */
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| 145 | #define IPOPT_OFFSET 2 /* offset within option */
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| 146 | #define IPOPT_MINOFF 4 /* min value of above */
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| 147 |
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| 148 | /*
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| 149 | * Time stamp option structure.
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| 150 | */
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| 151 | #pragma pack(1)
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| 152 | struct ip_timestamp {
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| 153 | u_char ipt_code; /* IPOPT_TS */
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| 154 | u_char ipt_len; /* size of structure (variable) */
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| 155 | u_char ipt_ptr; /* index of current entry */
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| 156 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 157 | u_char ipt_flg:4, /* flags, see below */
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| 158 | ipt_oflw:4; /* overflow counter */
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| 159 | #endif
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| 160 | #if BYTE_ORDER == BIG_ENDIAN
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| 161 | u_char ipt_oflw:4, /* overflow counter */
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| 162 | ipt_flg:4; /* flags, see below */
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| 163 | #endif
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| 164 | union ipt_timestamp {
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| 165 | n_long ipt_time[1];
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| 166 | struct ipt_ta {
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| 167 | struct in_addr ipt_addr;
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| 168 | n_long ipt_time;
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| 169 | } ipt_ta[1];
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| 170 | } ipt_timestamp;
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| 171 | };
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| 172 | #pragma pack()
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| 173 |
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| 174 | /* flag bits for ipt_flg */
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| 175 | #define IPOPT_TS_TSONLY 0 /* timestamps only */
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| 176 | #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
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| 177 | #ifdef TCPV40HDRS
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| 178 | #define IPOPT_TS_PRESPEC 2 /* specified modules only */
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| 179 | #else
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| 180 | #define IPOPT_TS_PRESPEC 3 /* specified modules only */
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| 181 | #endif
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| 182 |
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| 183 |
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| 184 | /* bits for security (not byte swapped) */
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| 185 | #define IPOPT_SECUR_UNCLASS 0x0000
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| 186 | #define IPOPT_SECUR_CONFID 0xf135
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| 187 | #define IPOPT_SECUR_EFTO 0x789a
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| 188 | #define IPOPT_SECUR_MMMM 0xbc4d
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| 189 | #define IPOPT_SECUR_RESTR 0xaf13
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| 190 | #define IPOPT_SECUR_SECRET 0xd788
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| 191 | #define IPOPT_SECUR_TOPSECRET 0x6bc5
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| 192 |
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| 193 | /*
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| 194 | * Internet implementation parameters.
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| 195 | */
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| 196 | #define MAXTTL 255 /* maximum time to live (seconds) */
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| 197 | /* This is being defined as TCP_TTL, UDP_TTL etc in tcp_time.h
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| 198 | #define IPDEFTTL 64
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| 199 | */
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| 200 | #define IPFRAGTTL 60 /* time to live for frags, slowhz */
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| 201 | #define IPTTLDEC 1 /* subtracted when forwarding */
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| 202 |
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| 203 | #define IP_MSS 576 /* default maximum segment size */
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| 204 |
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| 205 | #ifdef TCPV40HDRS
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| 206 | struct ipstat {
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| 207 | long ips_total;
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| 208 | long ips_badsum;
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| 209 | long ips_tooshort;
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| 210 | long ips_toosmall;
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| 211 | long ips_badhlen;
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| 212 | long ips_badlen;
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| 213 | long ips_fragments;
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| 214 | long ips_fragdropped;
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| 215 | long ips_fragtimeout;
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| 216 | long ips_forward;
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| 217 | long ips_cantforward;
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| 218 | long ips_redirectsent;
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| 219 | long ips_ipOutRequests;
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| 220 | long ips_ipOutNoRoutes;
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| 221 | long ips_ipFragFails;
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| 222 | long ips_ipFragOKs;
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| 223 | long ips_ipFragCreates;
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| 224 | long ips_ipReasmOKs;
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| 225 | long ips_ipOutDiscards;
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| 226 | long ips_ipInDiscards;
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| 227 | long ips_ipInAddrErrors;
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| 228 | long ips_ipInDelivers;
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| 229 | long ips_ipInUnknownProtos;
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| 230 | };
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| 231 | #endif /* TCPV40HDRS */
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| 232 |
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| 233 |
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| 234 | #endif /* !_NETINET_IP_H_ */
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