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 * @(#)in.h 7.11 (Berkeley) 4/20/91 34 */ 35 36 #ifndef _NETINET_IN_H_ 37 #define _NETINET_IN_H_ 38 39 /* 40 * Constants and structures defined by the internet system, 41 * Per RFC 790, September 1981. 42 */ 43 44 /* 45 * Protocols 46 */ 47 #define IPPROTO_IP 0 /* dummy for IP */ 48 #define IPPROTO_ICMP 1 /* control message protocol */ 49 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 50 #define IPPROTO_TCP 6 /* tcp */ 51 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 52 #define IPPROTO_PUP 12 /* pup */ 53 #define IPPROTO_UDP 17 /* user datagram protocol */ 54 #define IPPROTO_IDP 22 /* xns idp */ 55 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 56 #define IPPROTO_EON 80 /* ISO cnlp */ 57 58 #define IPPROTO_RAW 255 /* raw IP packet */ 59 #define IPPROTO_MAX 256 60 61 62 /* 63 * Local port number conventions: 64 * Ports < IPPORT_RESERVED are reserved for 65 * privileged processes (e.g. root). 66 * Ports > IPPORT_USERRESERVED are reserved 67 * for servers, not necessarily privileged. 68 */ 69 #define IPPORT_RESERVED 1024 70 #define IPPORT_USERRESERVED 5000 71 72 /* 73 * Internet address (a structure for historical reasons) 74 */ 75 struct in_addr { 76 u_long s_addr; 77 }; 78 79 /* 80 * Definitions of bits in internet address integers. 81 * On subnets, the decomposition of addresses to host and net parts 82 * is done according to subnet mask, not the masks here. 83 */ 84 #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) 85 #define IN_CLASSA_NET 0xff000000 86 #define IN_CLASSA_NSHIFT 24 87 #define IN_CLASSA_HOST 0x00ffffff 88 #define IN_CLASSA_MAX 128 89 90 #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) 91 #define IN_CLASSB_NET 0xffff0000 92 #define IN_CLASSB_NSHIFT 16 93 #define IN_CLASSB_HOST 0x0000ffff 94 #define IN_CLASSB_MAX 65536 95 96 #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) 97 #define IN_CLASSC_NET 0xffffff00 98 #define IN_CLASSC_NSHIFT 8 99 #define IN_CLASSC_HOST 0x000000ff 100 101 #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) 102 #define IN_MULTICAST(i) IN_CLASSD(i) 103 104 #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) 105 #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) 106 107 #define INADDR_ANY (u_long)0x00000000 108 #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ 109 #ifndef KERNEL 110 #define INADDR_NONE 0xffffffff /* -1 return */ 111 #endif 112 113 #define IN_LOOPBACKNET 127 /* official! */ 114 115 /* 116 * Socket address, internet style. 117 */ 118 struct sockaddr_in { 119 u_char sin_len; 120 u_char sin_family; 121 u_short sin_port; 122 struct in_addr sin_addr; 123 char sin_zero[8]; 124 }; 125 126 /* 127 * Structure used to describe IP options. 128 * Used to store options internally, to pass them to a process, 129 * or to restore options retrieved earlier. 130 * The ip_dst is used for the first-hop gateway when using a source route 131 * (this gets put into the header proper). 132 */ 133 struct ip_opts { 134 struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 135 char ip_opts[40]; /* actually variable in size */ 136 }; 137 138 /* 139 * Options for use with [gs]etsockopt at the IP level. 140 * First word of comment is data type; bool is stored in int. 141 */ 142 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */ 143 #define IP_HDRINCL 2 /* int; header is included with data (raw) */ 144 #define IP_TOS 3 /* int; IP type of service and precedence */ 145 #define IP_TTL 4 /* int; IP time to live */ 146 #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */ 147 #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */ 148 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */ 149 #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */ 150 151 #ifdef KERNEL 152 struct in_addr in_makeaddr(); 153 u_long in_netof(), in_lnaof(); 154 #endif 155 156 #endif /* !_NETINET_IN_H_ */ 157