in.h revision 13491
11541Srgrimes/* 21541Srgrimes * Copyright (c) 1982, 1986, 1990, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 3. All advertising materials mentioning features or use of this software 141541Srgrimes * must display the following acknowledgement: 151541Srgrimes * This product includes software developed by the University of 161541Srgrimes * California, Berkeley and its contributors. 171541Srgrimes * 4. Neither the name of the University nor the names of its contributors 181541Srgrimes * may be used to endorse or promote products derived from this software 191541Srgrimes * without specific prior written permission. 201541Srgrimes * 211541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311541Srgrimes * SUCH DAMAGE. 321541Srgrimes * 331541Srgrimes * @(#)in.h 8.3 (Berkeley) 1/3/94 3413491Speter * $Id: in.h,v 1.13 1995/11/14 20:33:57 phk Exp $ 351541Srgrimes */ 361541Srgrimes 372169Spaul#ifndef _NETINET_IN_H_ 382169Spaul#define _NETINET_IN_H_ 392169Spaul 401541Srgrimes/* 411541Srgrimes * Constants and structures defined by the internet system, 421541Srgrimes * Per RFC 790, September 1981, and numerous additions. 431541Srgrimes */ 441541Srgrimes 451541Srgrimes/* 461541Srgrimes * Protocols 471541Srgrimes */ 481541Srgrimes#define IPPROTO_IP 0 /* dummy for IP */ 491541Srgrimes#define IPPROTO_ICMP 1 /* control message protocol */ 501541Srgrimes#define IPPROTO_IGMP 2 /* group mgmt protocol */ 511541Srgrimes#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 529209Swollman#define IPPROTO_IPIP 4 /* IP encapsulation in IP */ 531541Srgrimes#define IPPROTO_TCP 6 /* tcp */ 541541Srgrimes#define IPPROTO_EGP 8 /* exterior gateway protocol */ 551541Srgrimes#define IPPROTO_PUP 12 /* pup */ 561541Srgrimes#define IPPROTO_UDP 17 /* user datagram protocol */ 571541Srgrimes#define IPPROTO_IDP 22 /* xns idp */ 581541Srgrimes#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 592531Swollman#define IPPROTO_RSVP 46 /* resource reservation */ 601541Srgrimes#define IPPROTO_EON 80 /* ISO cnlp */ 611541Srgrimes#define IPPROTO_ENCAP 98 /* encapsulation header */ 621541Srgrimes 631541Srgrimes#define IPPROTO_RAW 255 /* raw IP packet */ 641541Srgrimes#define IPPROTO_MAX 256 651541Srgrimes 661541Srgrimes 671541Srgrimes/* 681541Srgrimes * Local port number conventions: 691541Srgrimes * Ports < IPPORT_RESERVED are reserved for 701541Srgrimes * privileged processes (e.g. root). 711541Srgrimes * Ports > IPPORT_USERRESERVED are reserved 721541Srgrimes * for servers, not necessarily privileged. 731541Srgrimes */ 741541Srgrimes#define IPPORT_RESERVED 1024 751541Srgrimes#define IPPORT_USERRESERVED 5000 761541Srgrimes 771541Srgrimes/* 7813491Speter * Range of ports for automatic assignment to local addresses that 7913491Speter * have not explicitly specified an address. 8013491Speter * 8113491Speter * These can be overridden at kernel config time, and are used to init 8213491Speter * sysctl variables. The sysctl variables can be changed at runtime. 8313491Speter */ 8413491Speter#ifndef IPPORT_FIRSTAUTO 8513491Speter#define IPPORT_FIRSTAUTO 20000 8613491Speter#endif 8713491Speter#ifndef IPPORT_LASTAUTO 8813491Speter#define IPPORT_LASTAUTO 30000 8913491Speter#endif 9013491Speter 9113491Speter/* 921541Srgrimes * Internet address (a structure for historical reasons) 931541Srgrimes */ 941541Srgrimesstruct in_addr { 951541Srgrimes u_long s_addr; 961541Srgrimes}; 971541Srgrimes 981541Srgrimes/* 991541Srgrimes * Definitions of bits in internet address integers. 1001541Srgrimes * On subnets, the decomposition of addresses to host and net parts 1011541Srgrimes * is done according to subnet mask, not the masks here. 1021541Srgrimes */ 1031541Srgrimes#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) 1041541Srgrimes#define IN_CLASSA_NET 0xff000000 1051541Srgrimes#define IN_CLASSA_NSHIFT 24 1061541Srgrimes#define IN_CLASSA_HOST 0x00ffffff 1071541Srgrimes#define IN_CLASSA_MAX 128 1081541Srgrimes 1091541Srgrimes#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) 1101541Srgrimes#define IN_CLASSB_NET 0xffff0000 1111541Srgrimes#define IN_CLASSB_NSHIFT 16 1121541Srgrimes#define IN_CLASSB_HOST 0x0000ffff 1131541Srgrimes#define IN_CLASSB_MAX 65536 1141541Srgrimes 1151541Srgrimes#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) 1161541Srgrimes#define IN_CLASSC_NET 0xffffff00 1171541Srgrimes#define IN_CLASSC_NSHIFT 8 1181541Srgrimes#define IN_CLASSC_HOST 0x000000ff 1191541Srgrimes 1201541Srgrimes#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) 1211541Srgrimes#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 1221541Srgrimes#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 1231541Srgrimes#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 1241541Srgrimes#define IN_MULTICAST(i) IN_CLASSD(i) 1251541Srgrimes 1261541Srgrimes#define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000) 1271541Srgrimes#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) 1281541Srgrimes 1291541Srgrimes#define INADDR_ANY (u_long)0x00000000 1301541Srgrimes#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ 1311541Srgrimes#ifndef KERNEL 1321541Srgrimes#define INADDR_NONE 0xffffffff /* -1 return */ 1331541Srgrimes#endif 1341541Srgrimes 1351541Srgrimes#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ 1361541Srgrimes#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ 1371541Srgrimes#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ 1381541Srgrimes 1391541Srgrimes#define IN_LOOPBACKNET 127 /* official! */ 1401541Srgrimes 1411541Srgrimes/* 1421541Srgrimes * Socket address, internet style. 1431541Srgrimes */ 1441541Srgrimesstruct sockaddr_in { 1451541Srgrimes u_char sin_len; 1461541Srgrimes u_char sin_family; 1471541Srgrimes u_short sin_port; 1481541Srgrimes struct in_addr sin_addr; 1491541Srgrimes char sin_zero[8]; 1501541Srgrimes}; 1511541Srgrimes 1521541Srgrimes/* 1531541Srgrimes * Structure used to describe IP options. 1541541Srgrimes * Used to store options internally, to pass them to a process, 1551541Srgrimes * or to restore options retrieved earlier. 1561541Srgrimes * The ip_dst is used for the first-hop gateway when using a source route 1571541Srgrimes * (this gets put into the header proper). 1581541Srgrimes */ 1591541Srgrimesstruct ip_opts { 1601541Srgrimes struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 1611541Srgrimes char ip_opts[40]; /* actually variable in size */ 1621541Srgrimes}; 1631541Srgrimes 1641541Srgrimes/* 1651541Srgrimes * Options for use with [gs]etsockopt at the IP level. 1661541Srgrimes * First word of comment is data type; bool is stored in int. 1671541Srgrimes */ 1681541Srgrimes#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 1691541Srgrimes#define IP_HDRINCL 2 /* int; header is included with data */ 1701541Srgrimes#define IP_TOS 3 /* int; IP type of service and preced. */ 1711541Srgrimes#define IP_TTL 4 /* int; IP time to live */ 1721541Srgrimes#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 1731541Srgrimes#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 1741541Srgrimes#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 1751541Srgrimes#define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 1761541Srgrimes#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ 1771541Srgrimes#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 1781541Srgrimes#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 1791541Srgrimes#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 1801541Srgrimes#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 1812531Swollman#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 1822531Swollman#define IP_RSVP_ON 15 /* enable RSVP in kernel */ 1832531Swollman#define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 1849209Swollman#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 1859209Swollman#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 1861541Srgrimes 1871541Srgrimes/* 1881541Srgrimes * Defaults and limits for options 1891541Srgrimes */ 1901541Srgrimes#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 1911541Srgrimes#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 1929209Swollman#define IP_MAX_MEMBERSHIPS 20 /* per socket */ 1931541Srgrimes 1941541Srgrimes/* 1951541Srgrimes * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 1961541Srgrimes */ 1971541Srgrimesstruct ip_mreq { 1981541Srgrimes struct in_addr imr_multiaddr; /* IP multicast address of group */ 1991541Srgrimes struct in_addr imr_interface; /* local IP address of interface */ 2001541Srgrimes}; 2011541Srgrimes 2021541Srgrimes/* 2031541Srgrimes * Definitions for inet sysctl operations. 2041541Srgrimes * 2051541Srgrimes * Third level is protocol number. 2061541Srgrimes * Fourth level is desired variable within that protocol. 2071541Srgrimes */ 2081541Srgrimes#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */ 2091541Srgrimes 2101541Srgrimes#define CTL_IPPROTO_NAMES { \ 2111541Srgrimes { "ip", CTLTYPE_NODE }, \ 2121541Srgrimes { "icmp", CTLTYPE_NODE }, \ 2131541Srgrimes { "igmp", CTLTYPE_NODE }, \ 2141541Srgrimes { "ggp", CTLTYPE_NODE }, \ 2151541Srgrimes { 0, 0 }, \ 2161541Srgrimes { 0, 0 }, \ 2171541Srgrimes { "tcp", CTLTYPE_NODE }, \ 2181541Srgrimes { 0, 0 }, \ 2191541Srgrimes { "egp", CTLTYPE_NODE }, \ 2201541Srgrimes { 0, 0 }, \ 2211541Srgrimes { 0, 0 }, \ 2221541Srgrimes { 0, 0 }, \ 2231541Srgrimes { "pup", CTLTYPE_NODE }, \ 2241541Srgrimes { 0, 0 }, \ 2251541Srgrimes { 0, 0 }, \ 2261541Srgrimes { 0, 0 }, \ 2271541Srgrimes { 0, 0 }, \ 2281541Srgrimes { "udp", CTLTYPE_NODE }, \ 2291541Srgrimes { 0, 0 }, \ 2301541Srgrimes { 0, 0 }, \ 2311541Srgrimes { 0, 0 }, \ 2321541Srgrimes { 0, 0 }, \ 2331541Srgrimes { "idp", CTLTYPE_NODE }, \ 2341541Srgrimes} 2351541Srgrimes 2361541Srgrimes/* 2371541Srgrimes * Names for IP sysctl objects 2381541Srgrimes */ 2391541Srgrimes#define IPCTL_FORWARDING 1 /* act as router */ 2401541Srgrimes#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 2411541Srgrimes#define IPCTL_DEFTTL 3 /* default TTL */ 2421541Srgrimes#ifdef notyet 2431541Srgrimes#define IPCTL_DEFMTU 4 /* default MTU */ 2441541Srgrimes#endif 2455109Swollman#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 2466399Swollman#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 2476399Swollman#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 2487091Swollman#define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 2499575Speter#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 25012003Swollman#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 25112003Swollman#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 25212003Swollman#define IPCTL_MAXID 12 2531541Srgrimes 2541541Srgrimes#define IPCTL_NAMES { \ 2551541Srgrimes { 0, 0 }, \ 2561541Srgrimes { "forwarding", CTLTYPE_INT }, \ 2571541Srgrimes { "redirect", CTLTYPE_INT }, \ 2581541Srgrimes { "ttl", CTLTYPE_INT }, \ 2591541Srgrimes { "mtu", CTLTYPE_INT }, \ 2605109Swollman { "rtexpire", CTLTYPE_INT }, \ 2616399Swollman { "rtminexpire", CTLTYPE_INT }, \ 2626399Swollman { "rtmaxcache", CTLTYPE_INT }, \ 2637091Swollman { "sourceroute", CTLTYPE_INT }, \ 2649575Speter { "directed-broadcast", CTLTYPE_INT }, \ 26512003Swollman { "intr-queue-maxlen", CTLTYPE_INT }, \ 26612003Swollman { "intr-queue-drops", CTLTYPE_INT }, \ 2671541Srgrimes} 2681541Srgrimes 2691541Srgrimes 2701541Srgrimes#ifdef KERNEL 2717088Swollmanstruct ifnet; struct mbuf; /* forward declarations for Standard C */ 2727088Swollman 2731541Srgrimesint in_broadcast __P((struct in_addr, struct ifnet *)); 2741541Srgrimesint in_canforward __P((struct in_addr)); 2751541Srgrimesint in_cksum __P((struct mbuf *, int)); 2761541Srgrimesint in_localaddr __P((struct in_addr)); 2777088Swollmanchar *inet_ntoa __P((struct in_addr)); /* in libkern */ 2781541Srgrimes#endif 2792169Spaul 2802169Spaul#endif 2815109Swollman 282