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This commit is contained in:
Roland McGrath
198
inet/netinet/in.h
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198
inet/netinet/in.h
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/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU C Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _NETINET_IN_H
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#define _NETINET_IN_H 1
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#include <features.h>
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#include <sys/socket.h>
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/* Standard well-defined IP protocols. */
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enum
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{
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IPPROTO_IP = 0, /* Dummy protocol for TCP. */
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IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
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IPPROTO_GGP = 2, /* Gateway Protocol (deprecated). */
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IPPROTO_TCP = 6, /* Transmission Control Protocol. */
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IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
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IPPROTO_PUP = 12, /* PUP protocol. */
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IPPROTO_UDP = 17, /* User Datagram Protocol. */
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IPPROTO_IDP = 22, /* XNS IDP protocol. */
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IPPROTO_RAW = 255, /* Raw IP packets. */
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IPPROTO_MAX,
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};
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/* Standard well-known ports. */
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enum
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{
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IPPORT_ECHO = 7, /* Echo service. */
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IPPORT_DISCARD = 9, /* Discard transmissions service. */
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IPPORT_SYSTAT = 11, /* System status service. */
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IPPORT_DAYTIME = 13, /* Time of day service. */
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IPPORT_NETSTAT = 15, /* Network status service. */
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IPPORT_FTP = 21, /* File Transfer Protocol. */
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IPPORT_TELNET = 23, /* Telnet protocol. */
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IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
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IPPORT_TIMESERVER = 37, /* Timeserver service. */
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IPPORT_NAMESERVER = 42, /* Domain Name Service. */
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IPPROT_WHOIS = 43, /* Internet Whois service. */
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IPPORT_MTP = 57,
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IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
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IPPORT_RJE = 77,
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IPPORT_FINGER = 79, /* Finger service. */
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IPPORT_TTYLINK = 87,
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IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
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IPPORT_EXECSERVER = 512, /* execd service. */
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IPPORT_LOGINSERVER = 513, /* rlogind service. */
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IPPORT_CMDSERVER = 514,
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IPPORT_EFSSERVER = 520,
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/* UDP ports. */
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IPPORT_BIFFUDP = 512,
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IPPORT_WHOSERVER = 513,
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IPPORT_ROUTESERVER = 520,
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/* Ports less than this value are reserved for privileged processes. */
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IPPORT_RESERVED = 1024,
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/* Ports greater this value are reserved for (non-privileged) servers. */
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IPPORT_USERRESERVED = 5000,
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};
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/* Link numbers. */
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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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/* Internet address. */
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struct in_addr
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{
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unsigned long int s_addr;
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};
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/* Definitions of the bits in an Internet address integer.
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On subnets, host and network parts are found according to
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the subnet mask, not these masks. */
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#define IN_CLASSA(a) ((((long int) (a)) & 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 (0xffffffff & ~IN_CLASSA_NET)
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(a) ((((long int) (a)) & 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 (0xffffffff & ~IN_CLASSB_NET)
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(a) ((((long int) (a)) & 0xc0000000) == 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 (0xffffffff & ~IN_CLASSC_NET)
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#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) = 0xe0000000)
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#define IN_MULTICAST(a) IN_CLASSD(a)
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#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xe0000000) = 0xe0000000)
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#define IN_BADCLASS(a) ((((long int) (a)) & 0xf0000000) = 0xf0000000)
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/* Address to accept any incoming messages. */
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#define INADDR_ANY ((unsigned long int) 0x00000000)
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/* Address to send to all hosts. */
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#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
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/* Address indicating an error return. */
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#define INADDR_NONE 0xffffffff
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/* Network number for local host loopback. */
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#define IN_LOOPBACKNET 127
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/* Address to loopback in software to local host. */
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#ifndef INADDR_LOOPBACK
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#define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */
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#endif
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/* Get the definition of the macro to define the common sockaddr members. */
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#include <sockaddrcom.h>
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/* Structure describing an Internet socket address. */
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struct sockaddr_in
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{
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__SOCKADDR_COMMON (sin_);
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unsigned short int sin_port; /* Port number. */
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struct in_addr sin_addr; /* Internet address. */
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/* Pad to size of `struct sockaddr'. */
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unsigned char sin_zero[sizeof(struct sockaddr) -
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__SOCKADDR_COMMON_SIZE -
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sizeof(unsigned short int) -
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sizeof(struct in_addr)];
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};
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/* Options for use with `getsockopt' and `setsockopt' at the IP level.
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The first word in the comment at the right is the data type used;
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"bool" means a boolean value stored in an `int'. */
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#define IP_OPTIONS 1 /* ip_opts; IP per-packet options. */
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#define IP_HDRINCL 2 /* int; Header is included with data. */
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#define IP_TOS 3 /* int; IP type of service and precedence. */
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#define IP_TTL 4 /* int; IP time to live. */
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#define IP_RECVOPTS 5 /* bool; Receive all IP options w/datagram. */
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#define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */
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#define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */
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#define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */
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/* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
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The `ip_dst' field is used for the first-hop gateway when using a
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source route (this gets put into the header proper). */
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struct ip_opts
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{
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struct in_addr ip_dst; /* First hop; zero without source route. */
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char ip_opts[40]; /* Actually variable in size. */
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};
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/* Functions to convert between host and network byte order. */
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extern unsigned long int ntohl __P ((unsigned long int));
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extern unsigned short int ntohs __P ((unsigned short int));
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extern unsigned long int htonl __P ((unsigned long int));
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extern unsigned short int htons __P ((unsigned short int));
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#include <endian.h>
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#if __BYTE_ORDER == __BIG_ENDIAN
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/* The host byte order is the same as network byte order,
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so these functions are all just identity. */
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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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#endif /* netinet/in.h */
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