/* * Copyright (c) 1982, 1986 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. * * @(#)in.h 7.1 (Berkeley) 6/5/86 */ /* * Constants and structures defined by the internet system, * Per RFC 790, September 1981. */ /* * Protocols */ #define IPPROTO_IP 0 /* dummy for IP */ #define IPPROTO_ICMP 1 /* control message protocol */ #define IPPROTO_GGP 2 /* gateway^2 (deprecated) */ #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_RAW 255 /* raw IP packet */ #define IPPROTO_MAX 256 /* * 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 (a structure for historical reasons) */ struct in_addr { u_long s_addr; }; /* * 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) & 0xc0000000) == 0xc0000000) #define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_HOST 0x000000ff #define INADDR_ANY (u_long)0x00000000 #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ /* * 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 */ #if !defined(vax) && !defined(ntohl) && !defined(lint) /* * Macros for number representation conversion. */ #define ntohl(x) (x) #define ntohs(x) (x) #define htonl(x) (x) #define htons(x) (x) #endif #if !defined(ntohl) && (defined(vax) || defined(lint)) u_short ntohs(), htons(); u_long ntohl(), htonl(); #endif #ifdef KERNEL extern struct domain inetdomain; extern struct protosw inetsw[]; struct in_addr in_makeaddr(); u_long in_netof(), in_lnaof(); #endif