1 /* 2 * Copyright (c) 1982, 1986, 1990 Regents of the University of California. 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)in.h 7.11 (Berkeley) 4/20/91 34 * $Id: in.h,v 1.3 1993/05/20 03:50:02 cgd Exp $ 35 */ 36 37 #ifndef _NETINET_IN_H_ 38 #define _NETINET_IN_H_ 39 40 /* 41 * Constants and structures defined by the internet system, 42 * Per RFC 790, September 1981. 43 */ 44 45 /* 46 * Protocols 47 */ 48 #define IPPROTO_IP 0 /* dummy for IP */ 49 #define IPPROTO_ICMP 1 /* control message protocol */ 50 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 51 #define IPPROTO_TCP 6 /* tcp */ 52 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 53 #define IPPROTO_PUP 12 /* pup */ 54 #define IPPROTO_UDP 17 /* user datagram protocol */ 55 #define IPPROTO_IDP 22 /* xns idp */ 56 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 57 #define IPPROTO_EON 80 /* ISO cnlp */ 58 59 #define IPPROTO_RAW 255 /* raw IP packet */ 60 #define IPPROTO_MAX 256 61 62 63 /* 64 * Local port number conventions: 65 * Ports < IPPORT_RESERVED are reserved for 66 * privileged processes (e.g. root). 67 * Ports > IPPORT_USERRESERVED are reserved 68 * for servers, not necessarily privileged. 69 */ 70 #define IPPORT_RESERVED 1024 71 #define IPPORT_USERRESERVED 5000 72 73 /* 74 * Internet address (a structure for historical reasons) 75 */ 76 struct in_addr { 77 u_long s_addr; 78 }; 79 80 /* 81 * Definitions of bits in internet address integers. 82 * On subnets, the decomposition of addresses to host and net parts 83 * is done according to subnet mask, not the masks here. 84 */ 85 #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) 86 #define IN_CLASSA_NET 0xff000000 87 #define IN_CLASSA_NSHIFT 24 88 #define IN_CLASSA_HOST 0x00ffffff 89 #define IN_CLASSA_MAX 128 90 91 #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) 92 #define IN_CLASSB_NET 0xffff0000 93 #define IN_CLASSB_NSHIFT 16 94 #define IN_CLASSB_HOST 0x0000ffff 95 #define IN_CLASSB_MAX 65536 96 97 #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) 98 #define IN_CLASSC_NET 0xffffff00 99 #define IN_CLASSC_NSHIFT 8 100 #define IN_CLASSC_HOST 0x000000ff 101 102 #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) 103 #define IN_MULTICAST(i) IN_CLASSD(i) 104 105 #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) 106 #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) 107 108 #define INADDR_ANY (u_long)0x00000000 109 #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ 110 #ifndef KERNEL 111 #define INADDR_NONE 0xffffffff /* -1 return */ 112 #endif 113 114 #define IN_LOOPBACKNET 127 /* official! */ 115 116 /* 117 * Socket address, internet style. 118 */ 119 struct sockaddr_in { 120 u_char sin_len; 121 u_char sin_family; 122 u_short sin_port; 123 struct in_addr sin_addr; 124 char sin_zero[8]; 125 }; 126 127 /* 128 * Structure used to describe IP options. 129 * Used to store options internally, to pass them to a process, 130 * or to restore options retrieved earlier. 131 * The ip_dst is used for the first-hop gateway when using a source route 132 * (this gets put into the header proper). 133 */ 134 struct ip_opts { 135 struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 136 char ip_opts[40]; /* actually variable in size */ 137 }; 138 139 /* 140 * Options for use with [gs]etsockopt at the IP level. 141 * First word of comment is data type; bool is stored in int. 142 */ 143 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */ 144 #define IP_HDRINCL 2 /* int; header is included with data (raw) */ 145 #define IP_TOS 3 /* int; IP type of service and precedence */ 146 #define IP_TTL 4 /* int; IP time to live */ 147 #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */ 148 #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */ 149 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */ 150 #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */ 151 152 #ifdef KERNEL 153 struct in_addr in_makeaddr(); 154 u_long in_netof(), in_lnaof(); 155 #endif 156 157 #endif /* !_NETINET_IN_H_ */ 158