* 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 7.2 (Berkeley) %G%
* Constants and structures defined by the internet system,
* Per RFC 790, September 1981.
#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 */
* 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
#define IMPLINK_LOWEXPER 156
#define IMPLINK_HIGHEXPER 158
* Internet address (a structure for historical reasons)
* 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 */
#define INADDR_NONE 0xffffffff /* -1 return */
* Socket address, internet style.
* Options for use with [gs]etsockopt at the IP level.
#define IP_OPTIONS 1 /* set/get IP per-packet options */
extern struct domain inetdomain
;
extern struct protosw inetsw
[];
struct in_addr
in_makeaddr();
u_long
in_netof(), in_lnaof();