/* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _NETINET_IN_H
#define _NETINET_IN_H 1
#include <features.h>
#include <sys/socket.h>
#include <sys/types.h>
__BEGIN_DECLS
/* Standard well-defined IP protocols. */
enum
{
IPPROTO_IP = 0, /* Dummy protocol for TCP. */
IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
IPPROTO_TCP = 6, /* Transmission Control Protocol. */
IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
IPPROTO_PUP = 12, /* PUP protocol. */
IPPROTO_UDP = 17, /* User Datagram Protocol. */
IPPROTO_IDP = 22, /* XNS IDP protocol. */
IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling. */
IPPROTO_RSVP = 46, /* RSVP Protocol. */
IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702). */
IPPROTO_ICMPV6 = 58, /* ICMPv6. */
IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
IPPROTO_RAW = 255, /* Raw IP packets. */
IPPROTO_MAX
};
/* Standard well-known ports. */
enum
{
IPPORT_ECHO = 7, /* Echo service. */
IPPORT_DISCARD = 9, /* Discard transmissions service. */
IPPORT_SYSTAT = 11, /* System status service. */
IPPORT_DAYTIME = 13, /* Time of day service. */
IPPORT_NETSTAT = 15, /* Network status service. */
IPPORT_FTP = 21, /* File Transfer Protocol. */
IPPORT_TELNET = 23, /* Telnet protocol. */
IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
IPPORT_TIMESERVER = 37, /* Timeserver service. */
IPPORT_NAMESERVER = 42, /* Domain Name Service. */
IPPORT_WHOIS = 43, /* Internet Whois service. */
IPPORT_MTP = 57,
IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
IPPORT_RJE = 77,
IPPORT_FINGER = 79, /* Finger service. */
IPPORT_TTYLINK = 87,
IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
IPPORT_EXECSERVER = 512, /* execd service. */
IPPORT_LOGINSERVER = 513, /* rlogind service. */
IPPORT_CMDSERVER = 514,
IPPORT_EFSSERVER = 520,
/* UDP ports. */
IPPORT_BIFFUDP = 512,
IPPORT_WHOSERVER = 513,
IPPORT_ROUTESERVER = 520,
/* Ports less than this value are reserved for privileged processes. */
IPPORT_RESERVED = 1024,
/* Ports greater this value are reserved for (non-privileged) servers. */
IPPORT_USERRESERVED = 5000
};
/* Internet address. */
struct in_addr
{
unsigned int s_addr;
};
/* Definitions of the bits in an Internet address integer.
On subnets, host and network parts are found according to
the subnet mask, not these masks. */
#define IN_CLASSA(a) ((((unsigned) (a)) & 0x80000000) == 0)
#define IN_CLASSA_NET 0xff000000
#define IN_CLASSA_NSHIFT 24
#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
#define IN_CLASSA_MAX 128
#define IN_CLASSB(a) ((((unsigned) (a)) & 0xc0000000) == 0x80000000)
#define IN_CLASSB_NET 0xffff0000
#define IN_CLASSB_NSHIFT 16
#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
#define IN_CLASSB_MAX 65536
#define IN_CLASSC(a) ((((unsigned) (a)) & 0xc0000000) == 0xc0000000)
#define IN_CLASSC_NET 0xffffff00
#define IN_CLASSC_NSHIFT 8
#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
#define IN_CLASSD(a) ((((unsigned) (a)) & 0xf0000000) == 0xe0000000)
#define IN_MULTICAST(a) IN_CLASSD(a)
#define IN_EXPERIMENTAL(a) ((((unsigned) (a)) & 0xe0000000) == 0xe0000000)
#define IN_BADCLASS(a) ((((unsigned) (a)) & 0xf0000000) == 0xf0000000)
/* Address to accept any incoming messages. */
#define INADDR_ANY ((unsigned) 0x00000000)
/* Address to send to all hosts. */
#define INADDR_BROADCAST ((unsigned) 0xffffffff)
/* Address indicating an error return. */
#define INADDR_NONE 0xffffffff
/* Network number for local host loopback. */
#define IN_LOOPBACKNET 127
/* Address to loopback in software to local host. */
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */
#endif
/* Defines for Multicast INADDR. */
#define INADDR_UNSPEC_GROUP ((u_int32_t) 0xe0000000U) /* 224.0.0.0 */
#define INADDR_ALLHOSTS_GROUP ((u_int32_t) 0xe0000001U) /* 224.0.0.1 */
#define INADDR_ALLRTRS_GROUP ((u_int32_t) 0xe0000002U) /* 224.0.0.2 */
#define INADDR_MAX_LOCAL_GROUP ((u_int32_t) 0xe00000ffU) /* 224.0.0.255 */
/* Get the definition of the macro to define the common sockaddr members. */
#include <sockaddrcom.h>
/* Structure describing an Internet socket address. */
struct sockaddr_in
{
__SOCKADDR_COMMON (sin_);
unsigned short int sin_port; /* Port number. */
struct in_addr sin_addr; /* Internet address. */
/* Pad to size of `struct sockaddr'. */
unsigned char sin_zero[sizeof(struct sockaddr) -
__SOCKADDR_COMMON_SIZE -
sizeof(unsigned short int) -
sizeof(struct in_addr)];
};
/* Options for use with `getsockopt' and `setsockopt' at the IP level.
The first word in the comment at the right is the data type used;
"bool" means a boolean value stored in an `int'. */
#define IP_TOS 1 /* int; IP type of service and precedence. */
#define IP_TTL 2 /* int; IP time to live. */
#define IP_HDRINCL 3 /* int; Header is included with data. */
#define IP_OPTIONS 4 /* ip_opts; IP per-packet options. */
#define IP_ROUTER_ALERT 5 /* not sure. defined in linux kernel. */
#define IP_RECVOPTS 6 /* not sure. defined in linux kernel. */
#define IP_RETOPTS 7 /* not sure. defined in linux kernel. */
#define IP_PKTINFO 8 /* not sure. defined in linux kernel. */
#define IP_PKTOPTIONS 9 /* not sure. defined in linux kernel. */
#define IP_MTU_DISCOVER 10 /* not sure. defined in linux kernel. */
#define IP_RECVERR 11 /* not sure. defined in linux kernel. */
#define IP_RECVTTL 12 /* not sure. defined in linux kernel. */
#define IP_RECVTOS 13 /* not sure. defined in linux kernel. */
#define IP_MTU 14 /* not sure. defined in linux kernel. */
#define IP_MULTICAST_IF 32 /* in_addr; set/get IP multicast i/f */
#define IP_MULTICAST_TTL 33 /* u_char; set/get IP multicast ttl */
#define IP_MULTICAST_LOOP 34 /* i_char; set/get IP multicast loopback */
#define IP_ADD_MEMBERSHIP 35 /* ip_mreq; add an IP group membership */
#define IP_DROP_MEMBERSHIP 36 /* ip_mreq; drop an IP group membership */
/* BSD compatibility */
#define IP_RECVRETOPTS IP_RETOPTS
/* IP_MTU_DISCOVER values */
#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
#define IP_PMTUDISC_WANT 1 /* Use per route hints */
#define IP_PMTUDISC_DO 2 /* Always DF */
/* To select the IP level. */
#define SOL_IP 0
/* Structure used to describe IP options for IP_OPTIONS. The `ip_dst'
field is used for the first-hop gateway when using a source route
(this gets put into the header proper). */
struct ip_opts
{
struct in_addr ip_dst; /* First hop; zero without source route. */
char ip_opts[40]; /* Actually variable in size. */
};
/* Structure used 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 */
};
/* Functions to convert between host and network byte order.
Please note that these functions normally take `unsigned long int' or
`unsigned short int' values as arguments and also return them. But
this was a short-sighted decision since on different systems the types
may have different representations but the values are always the same. */
extern u_int32_t ntohl __P ((u_int32_t __netlong));
extern u_int16_t ntohs __P ((u_int16_t __netshort));
extern u_int32_t htonl __P ((u_int32_t __hostlong));
extern u_int16_t htons __P ((u_int16_t __hostshort));
#include <endian.h>
#if __BYTE_ORDER == __BIG_ENDIAN
/* The host byte order is the same as network byte order,
so these functions are all just identity. */
#define ntohl(x) (x)
#define ntohs(x) (x)
#define htonl(x) (x)
#define htons(x) (x)
#endif
/* Bind socket to a priviledged IP port. */
extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sock_in));
__END_DECLS
#endif /* netinet/in.h */
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