/* * Copyright (c) 1982, 1986 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of California at Berkeley. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. */ /* * Constants and structures defined by the internet system, * Per RFC 790, September 1981. */ #ifndef _NETINET_IN_H #define _NETINET_IN_H #pragma ident "@(#)in.h 1.4 93/07/06 SMI" /* in.h 1.19 90/07/27 SMI; from UCB 7.5 2/22/88 */ #ifdef __cplusplus extern "C" { #endif #include #include /* * Protocols */ #define IPPROTO_IP 0 /* dummy for IP */ #define IPPROTO_ICMP 1 /* control message protocol */ #define IPPROTO_IGMP 2 /* group control protocol */ #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ #define IPPROTO_ENCAP 4 /* IP in IP encapsulation */ #define IPPROTO_TCP 6 /* tcp */ #define IPPROTO_EGP 8 /* exterior gateway protocol */ #define IPPROTO_PUP 12 /* pup */ #define IPPROTO_UDP 17 /* user datagram protocol */ #define IPPROTO_IDP 22 /* xns idp */ #define IPPROTO_HELLO 63 /* "hello" routing protocol */ #define IPPROTO_ND 77 /* UNOFFICIAL net disk proto */ #define IPPROTO_EON 80 /* ISO clnp */ #define IPPROTO_RAW 255 /* raw IP packet */ #define IPPROTO_MAX 256 /* * Port/socket numbers: network standard functions */ #define IPPORT_ECHO 7 #define IPPORT_DISCARD 9 #define IPPORT_SYSTAT 11 #define IPPORT_DAYTIME 13 #define IPPORT_NETSTAT 15 #define IPPORT_FTP 21 #define IPPORT_TELNET 23 #define IPPORT_SMTP 25 #define IPPORT_TIMESERVER 37 #define IPPORT_NAMESERVER 42 #define IPPORT_WHOIS 43 #define IPPORT_MTP 57 /* * Port/socket numbers: host specific functions */ #define IPPORT_TFTP 69 #define IPPORT_RJE 77 #define IPPORT_FINGER 79 #define IPPORT_TTYLINK 87 #define IPPORT_SUPDUP 95 /* * UNIX TCP sockets */ #define IPPORT_EXECSERVER 512 #define IPPORT_LOGINSERVER 513 #define IPPORT_CMDSERVER 514 #define IPPORT_EFSSERVER 520 /* * UNIX UDP sockets */ #define IPPORT_BIFFUDP 512 #define IPPORT_WHOSERVER 513 #define IPPORT_ROUTESERVER 520 /* 520+1 also used */ /* * Ports < IPPORT_RESERVED are reserved for * privileged processes (e.g. root). * Ports > IPPORT_USERRESERVED are reserved * for servers, not necessarily privileged. */ #define IPPORT_RESERVED 1024 #define IPPORT_USERRESERVED 5000 /* * Link numbers */ #define IMPLINK_IP 155 #define IMPLINK_LOWEXPER 156 #define IMPLINK_HIGHEXPER 158 /* * Internet address * This definition contains obsolete fields for compatibility * with SunOS 3.x and 4.2bsd. The presence of subnets renders * divisions into fixed fields misleading at best. New code * should use only the s_addr field. */ struct in_addr { union { struct { u_char s_b1, s_b2, s_b3, s_b4; } S_un_b; struct { u_short s_w1, s_w2; } S_un_w; u_long S_addr; } S_un; #define s_addr S_un.S_addr /* should be used for all code */ #define s_host S_un.S_un_b.s_b2 /* OBSOLETE: host on imp */ #define s_net S_un.S_un_b.s_b1 /* OBSOLETE: network */ #define s_imp S_un.S_un_w.s_w2 /* OBSOLETE: imp */ #define s_impno S_un.S_un_b.s_b4 /* OBSOLETE: imp # */ #define s_lh S_un.S_un_b.s_b3 /* OBSOLETE: logical host */ }; /* * Definitions of bits in internet address integers. * On subnets, the decomposition of addresses to host and net parts * is done according to subnet mask, not the masks here. */ #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) #define IN_CLASSA_NET 0xff000000 #define IN_CLASSA_NSHIFT 24 #define IN_CLASSA_HOST 0x00ffffff #define IN_CLASSA_MAX 128 #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) #define IN_CLASSB_NET 0xffff0000 #define IN_CLASSB_NSHIFT 16 #define IN_CLASSB_HOST 0x0000ffff #define IN_CLASSB_MAX 65536 #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) #define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_HOST 0x000000ff #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ #define IN_MULTICAST(i) IN_CLASSD(i) #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) #define INADDR_ANY (u_long)0x00000000 #define INADDR_LOOPBACK (u_long)0x7F000001 #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ #define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ #define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ #define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ #define IN_LOOPBACKNET 127 /* official! */ /* * Define a macro to stuff the loopback address into an Internet address */ #define IN_SET_LOOPBACK_ADDR(a) \ { (a)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); \ (a)->sin_family = AF_INET; } /* * Socket address, internet style. */ struct sockaddr_in { short sin_family; u_short sin_port; struct in_addr sin_addr; char sin_zero[8]; }; /* * Options for use with [gs]etsockopt at the IP level. */ #define IP_OPTIONS 1 /* set/get IP per-packet options */ #define IP_HDRINCL 2 /* int; header is included with data (raw) */ #define IP_TOS 3 /* int; IP type of service and precedence */ #define IP_TTL 4 /* int; IP time to live */ #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */ #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */ #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */ #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */ #define IP_MULTICAST_IF 0x10 /* set/get IP multicast interface */ #define IP_MULTICAST_TTL 0x11 /* set/get IP multicast timetolive */ #define IP_MULTICAST_LOOP 0x12 /* set/get IP multicast loopback */ #define IP_ADD_MEMBERSHIP 0x13 /* add an IP group membership */ #define IP_DROP_MEMBERSHIP 0x14 /* drop an IP group membership */ #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ /* * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */ struct ip_mreq { struct in_addr imr_multiaddr; /* IP multicast address of group */ struct in_addr imr_interface; /* local IP address of interface */ }; /* * Macros for number representation conversion now live in . */ #ifdef _KERNEL struct in_addr in_makeaddr(); u_long in_netof(), in_lnaof(); /* * Useful defines, should be in stream.h */ #define msgbavail(bp) ((bp)->b_datap->db_lim - (bp)->b_wptr) #define msgblen(bp) ((bp)->b_wptr - (bp)->b_rptr) #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _NETINET_IN_H */