in.h revision 1.8
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 1.8 1994/01/28 13:46:02 deraadt 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_IGMP 2 /* group mgmt protocol */ 51 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 52 #define IPPROTO_TCP 6 /* tcp */ 53 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 54 #define IPPROTO_PUP 12 /* pup */ 55 #define IPPROTO_UDP 17 /* user datagram protocol */ 56 #define IPPROTO_IDP 22 /* xns idp */ 57 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 58 #define IPPROTO_EON 80 /* ISO cnlp */ 59 60 #define IPPROTO_RAW 255 /* raw IP packet */ 61 #define IPPROTO_MAX 256 62 63 64 /* 65 * Local port number conventions: 66 * Ports < IPPORT_RESERVED are reserved for 67 * privileged processes (e.g. root). 68 * Ports > IPPORT_USERRESERVED are reserved 69 * for servers, not necessarily privileged. 70 */ 71 #define IPPORT_RESERVED 1024 72 #define IPPORT_USERRESERVED 5000 73 74 /* 75 * Internet address (a structure for historical reasons) 76 */ 77 struct in_addr { 78 u_long s_addr; 79 }; 80 81 /* 82 * Definitions of bits in internet address integers. 83 * On subnets, the decomposition of addresses to host and net parts 84 * is done according to subnet mask, not the masks here. 85 */ 86 #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) 87 #define IN_CLASSA_NET 0xff000000 88 #define IN_CLASSA_NSHIFT 24 89 #define IN_CLASSA_HOST 0x00ffffff 90 #define IN_CLASSA_MAX 128 91 92 #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) 93 #define IN_CLASSB_NET 0xffff0000 94 #define IN_CLASSB_NSHIFT 16 95 #define IN_CLASSB_HOST 0x0000ffff 96 #define IN_CLASSB_MAX 65536 97 98 #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) 99 #define IN_CLASSC_NET 0xffffff00 100 #define IN_CLASSC_NSHIFT 8 101 #define IN_CLASSC_HOST 0x000000ff 102 103 #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) 104 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 105 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 106 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 107 #define IN_MULTICAST(i) IN_CLASSD(i) 108 109 #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) 110 #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) 111 112 #define INADDR_ANY (u_long)0x00000000 113 #define INADDR_LOOPBACK (u_long)0x7f000001 114 #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ 115 #ifndef KERNEL 116 #define INADDR_NONE 0xffffffff /* -1 return */ 117 #endif 118 119 #define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ 120 #define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ 121 #define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ 122 123 #define IN_LOOPBACKNET 127 /* official! */ 124 125 /* 126 * Define a macro to stuff the loopback address into an Internet address 127 */ 128 #define IN_SET_LOOPBACK_ADDR(a) { \ 129 (a)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); \ 130 (a)->sin_family = AF_INET; } 131 /* 132 * Socket address, internet style. 133 */ 134 struct sockaddr_in { 135 u_char sin_len; 136 u_char sin_family; 137 u_short sin_port; 138 struct in_addr sin_addr; 139 char sin_zero[8]; 140 }; 141 142 /* 143 * Structure used to describe IP options. 144 * Used to store options internally, to pass them to a process, 145 * or to restore options retrieved earlier. 146 * The ip_dst is used for the first-hop gateway when using a source route 147 * (this gets put into the header proper). 148 */ 149 struct ip_opts { 150 struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 151 char ip_opts[40]; /* actually variable in size */ 152 }; 153 154 /* 155 * Options for use with [gs]etsockopt at the IP level. 156 * First word of comment is data type; bool is stored in int. 157 */ 158 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 159 #define IP_HDRINCL 2 /* int; header is included with data */ 160 #define IP_TOS 3 /* int; IP type of service and preced */ 161 #define IP_TTL 4 /* int; IP time to live */ 162 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 163 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 164 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 165 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 166 #define IP_MULTICAST_IF 9 /* u_char; set/get IP mcast i/f */ 167 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP mcast ttl */ 168 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP mcast loopback */ 169 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add IP group membership */ 170 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop IP group membership */ 171 172 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 173 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 174 #define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */ 175 176 /* 177 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 178 */ 179 struct ip_mreq { 180 struct in_addr imr_multiaddr; /* IP multicast address of group */ 181 struct in_addr imr_interface; /* local IP address of interface */ 182 }; 183 184 #ifdef KERNEL 185 struct in_addr in_makeaddr(); 186 u_long in_netof(), in_lnaof(); 187 188 struct socket; 189 190 int in_broadcast __P((struct in_addr)); 191 int in_canforward __P((struct in_addr)); 192 int in_cksum __P((struct mbuf *, int)); 193 int in_control __P((struct socket *, int, caddr_t, struct ifnet *)); 194 struct in_ifaddr * 195 in_iaonnetof __P((u_long)); 196 u_long in_lnaof __P((struct in_addr)); 197 int in_localaddr __P((struct in_addr)); 198 struct in_addr 199 in_makeaddr __P((u_long, u_long)); 200 u_long in_netof __P((struct in_addr)); 201 void in_sockmaskof __P((struct in_addr, struct sockaddr_in *)); 202 #endif 203 204 #endif /* !_NETINET_IN_H_ */ 205
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