257 lines
7.3 KiB
C
257 lines
7.3 KiB
C
/* @(#)in.h 1.19 90/07/27 SMI; from UCB 7.5 2/22/88 */
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/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of California at Berkeley. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*/
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/*
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* Constants and structures defined by the internet system,
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* Per RFC 790, September 1981.
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*/
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#ifndef _netinet_in_h
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#define _netinet_in_h
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/*
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* Protocols
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*/
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#define IPPROTO_IP 0 /* dummy for IP */
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#define IPPROTO_ICMP 1 /* control message protocol */
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#define IPPROTO_IGMP 2 /* group control protocol */
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#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
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#define IPPROTO_ST 5 /* st */
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#define IPPROTO_TCP 6 /* tcp */
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#define IPPROTO_EGP 8 /* exterior gateway protocol */
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#define IPPROTO_PUP 12 /* pup */
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#define IPPROTO_UDP 17 /* user datagram protocol */
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#define IPPROTO_IDP 22 /* xns idp */
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#define IPPROTO_HELLO 63 /* "hello" routing protocol */
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#define IPPROTO_ND 77 /* UNOFFICIAL net disk proto */
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#define IPPROTO_OSPF 89 /* Open SPF IGP */
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#define IPPROTO_RAW 255 /* raw IP packet */
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#define IPPROTO_MAX 256
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/*
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* Port/socket numbers: network standard functions
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*/
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#define IPPORT_ECHO 7
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#define IPPORT_DISCARD 9
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#define IPPORT_SYSTAT 11
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#define IPPORT_DAYTIME 13
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#define IPPORT_NETSTAT 15
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#define IPPORT_FTP 21
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#define IPPORT_TELNET 23
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#define IPPORT_SMTP 25
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#define IPPORT_TIMESERVER 37
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#define IPPORT_NAMESERVER 42
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#define IPPORT_WHOIS 43
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#define IPPORT_MTP 57
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/*
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* Port/socket numbers: host specific functions
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*/
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#define IPPORT_TFTP 69
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#define IPPORT_RJE 77
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#define IPPORT_FINGER 79
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#define IPPORT_TTYLINK 87
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#define IPPORT_SUPDUP 95
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/*
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* UNIX TCP sockets
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*/
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#define IPPORT_EXECSERVER 512
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#define IPPORT_LOGINSERVER 513
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#define IPPORT_CMDSERVER 514
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#define IPPORT_EFSSERVER 520
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/*
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* UNIX UDP sockets
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*/
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#define IPPORT_BIFFUDP 512
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#define IPPORT_WHOSERVER 513
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#define IPPORT_ROUTESERVER 520 /* 520+1 also used */
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/*
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* Ports < IPPORT_RESERVED are reserved for
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* privileged processes (e.g. root).
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* Ports > IPPORT_USERRESERVED are reserved
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* for servers, not necessarily privileged.
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*/
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#define IPPORT_RESERVED 1024
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#define IPPORT_USERRESERVED 5000
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/*
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* Link numbers
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*/
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#define IMPLINK_IP 155
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#define IMPLINK_LOWEXPER 156
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#define IMPLINK_HIGHEXPER 158
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/*
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* Internet address
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* This definition contains obsolete fields for compatibility
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* with SunOS 3.x and 4.2bsd. The presence of subnets renders
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* divisions into fixed fields misleading at best. New code
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* should use only the s_addr field.
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*/
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struct in_addr {
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union {
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struct { u_char s_b1,s_b2,s_b3,s_b4; } S_un_b;
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struct { u_short s_w1,s_w2; } S_un_w;
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u_long S_addr;
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} S_un;
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#define s_addr S_un.S_addr /* should be used for all code */
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#define s_host S_un.S_un_b.s_b2 /* OBSOLETE: host on imp */
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#define s_net S_un.S_un_b.s_b1 /* OBSOLETE: network */
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#define s_imp S_un.S_un_w.s_w2 /* OBSOLETE: imp */
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#define s_impno S_un.S_un_b.s_b4 /* OBSOLETE: imp # */
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#define s_lh S_un.S_un_b.s_b3 /* OBSOLETE: logical host */
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};
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/*
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* Definitions of bits in internet address integers.
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* On subnets, the decomposition of addresses to host and net parts
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* is done according to subnet mask, not the masks here.
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*/
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#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
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#define IN_CLASSA_NET 0xff000000
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST 0x00ffffff
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
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#define IN_CLASSB_NET 0xffff0000
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST 0x0000ffff
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
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#define IN_CLASSC_NET 0xffffff00
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST 0x000000ff
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#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
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#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
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#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
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#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
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#define IN_MULTICAST(i) IN_CLASSD(i)
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#define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000)
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#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
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#define INADDR_ANY (u_long)0x00000000
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#define INADDR_LOOPBACK (u_long)0x7F000001
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#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
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#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
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#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */
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#define IN_LOOPBACKNET 127 /* official! */
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/*
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* Define a macro to stuff the loopback address into an Internet address
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*/
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#define IN_SET_LOOPBACK_ADDR(a) {(a)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); \
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(a)->sin_family = AF_INET;}
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/*
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* Socket address, internet style.
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*/
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struct sockaddr_in {
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short sin_family;
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u_short sin_port;
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struct in_addr sin_addr;
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char sin_zero[8];
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};
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/*
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* Options for use with [gs]etsockopt at the IP level.
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*/
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#define IP_OPTIONS 1 /* set/get IP per-packet options */
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#define IP_MULTICAST_IF 2 /* set/get IP multicast interface */
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#define IP_MULTICAST_TTL 3 /* set/get IP multicast timetolive */
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#define IP_MULTICAST_LOOP 4 /* set/get IP multicast loopback */
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#define IP_ADD_MEMBERSHIP 5 /* add an IP group membership */
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#define IP_DROP_MEMBERSHIP 6 /* drop an IP group membership */
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#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
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#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
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#define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */
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/*
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* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
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*/
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struct ip_mreq {
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struct in_addr imr_multiaddr; /* IP multicast address of group */
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struct in_addr imr_interface; /* local IP address of interface */
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};
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#if !defined(vax) && !defined(ntohl) && !defined(i386)
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/*
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* Macros for number representation conversion.
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*/
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#define ntohl(x) (x)
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#define ntohs(x) (x)
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#define htonl(x) (x)
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#define htons(x) (x)
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#endif
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#if !defined(ntohl) && (defined(vax) || defined(i386))
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u_short ntohs(), htons();
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u_long ntohl(), htonl();
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#endif
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#ifdef KERNEL
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extern struct domain inetdomain;
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extern struct protosw inetsw[];
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struct in_addr in_makeaddr();
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u_long in_netof(), in_lnaof();
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#endif
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#ifndef BYTE_ORDER
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/*
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* Definitions for byte order,
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* according to byte significance from low address to high.
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*/
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#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
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#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
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#if defined(vax) || defined(i386)
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#define BYTE_ORDER LITTLE_ENDIAN
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#else
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#define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
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#endif
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#endif BYTE_ORDER
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/*
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* Macros for number representation conversion.
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*/
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#if BYTE_ORDER==LITTLE_ENDIAN
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#define NTOHL(d) ((d) = ntohl((d)))
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#define NTOHS(d) ((d) = ntohs((d)))
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#define HTONL(d) ((d) = htonl((d)))
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#define HTONS(d) ((d) = htons((d)))
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#else
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#define ntohl(x) (x)
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#define ntohs(x) (x)
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#define htonl(x) (x)
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#define htons(x) (x)
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#define NTOHL(d)
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#define NTOHS(d)
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#define HTONL(d)
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#define HTONS(d)
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#endif
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#endif /*!_netinet_in_h*/
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