333 lines
11 KiB
C
333 lines
11 KiB
C
/* Copyright (C) 1991-1999, 2000 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
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, 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 <limits.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <bits/socket.h>
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__BEGIN_DECLS
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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_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
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IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
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IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
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IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
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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_TP = 29, /* SO Transport Protocol Class 4. */
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IPPROTO_IPV6 = 41, /* IPv6 header. */
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IPPROTO_ROUTING = 43, /* IPv6 routing header. */
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IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
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IPPROTO_RSVP = 46, /* Reservation Protocol. */
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IPPROTO_GRE = 47, /* General Routing Encapsulation. */
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IPPROTO_ESP = 50, /* encapsulating security payload. */
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IPPROTO_AH = 51, /* authentication header. */
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IPPROTO_ICMPV6 = 58, /* ICMPv6. */
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IPPROTO_NONE = 59, /* IPv6 no next header. */
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IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
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IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
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IPPROTO_ENCAP = 98, /* Encapsulation Header. */
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IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
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IPPROTO_COMP = 108, /* Compression Header 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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/* Type to represent a port. */
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typedef uint16_t in_port_t;
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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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IPPORT_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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/* Internet address. */
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typedef uint32_t in_addr_t;
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struct in_addr
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{
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in_addr_t 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) ((((in_addr_t)(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) ((((in_addr_t)(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) ((((in_addr_t)(a)) & 0xe0000000) == 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) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
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#define IN_MULTICAST(a) IN_CLASSD(a)
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#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
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#define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
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/* Address to accept any incoming messages. */
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#define INADDR_ANY ((in_addr_t) 0x00000000)
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/* Address to send to all hosts. */
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#define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
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/* Address indicating an error return. */
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#define INADDR_NONE ((in_addr_t) 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 ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
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#endif
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/* Defines for Multicast INADDR. */
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#define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
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#define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
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#define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
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/* IPv6 address */
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struct in6_addr
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{
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union
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{
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uint8_t u6_addr8[16];
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uint16_t u6_addr16[8];
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uint32_t u6_addr32[4];
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} in6_u;
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#define s6_addr in6_u.u6_addr8
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#define s6_addr16 in6_u.u6_addr16
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#define s6_addr32 in6_u.u6_addr32
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};
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extern const struct in6_addr in6addr_any; /* :: */
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extern const struct in6_addr in6addr_loopback; /* ::1 */
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#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
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#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
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#define INET_ADDRSTRLEN 16
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#define INET6_ADDRSTRLEN 46
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/* Get the definition of the macro to define the common sockaddr members. */
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#include <bits/sockaddr.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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in_port_t 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 (in_port_t) -
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sizeof (struct in_addr)];
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};
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/* Ditto, for IPv6. */
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struct sockaddr_in6
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{
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__SOCKADDR_COMMON (sin6_);
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in_port_t sin6_port; /* Transport layer port # */
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uint32_t sin6_flowinfo; /* IPv6 flow information */
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struct in6_addr sin6_addr; /* IPv6 address */
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uint32_t sin6_scope_id; /* IPv6 scope-id */
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};
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/* IPv6 multicast request. */
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struct ipv6_mreq
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{
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/* IPv6 multicast address of group */
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struct in6_addr ipv6mr_multiaddr;
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/* local interface */
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unsigned int ipv6mr_interface;
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};
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/* Get system-specific definitions. */
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#include <bits/in.h>
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/* Functions to convert between host and network byte order.
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Please note that these functions normally take `unsigned long int' or
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`unsigned short int' values as arguments and also return them. But
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this was a short-sighted decision since on different systems the types
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may have different representations but the values are always the same. */
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extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
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extern uint16_t ntohs (uint16_t __netshort)
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__THROW __attribute__ ((__const__));
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extern uint32_t htonl (uint32_t __hostlong)
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__THROW __attribute__ ((__const__));
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extern uint16_t htons (uint16_t __hostshort)
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__THROW __attribute__ ((__const__));
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#include <endian.h>
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/* Get machine dependent optimized versions of byte swapping functions. */
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#include <bits/byteswap.h>
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#ifdef __OPTIMIZE__
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/* We can optimize calls to the conversion functions. Either nothing has
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to be done or we are using directly the byte-swapping functions which
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often can be inlined. */
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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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# else
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define ntohl(x) __bswap_32 (x)
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# define ntohs(x) __bswap_16 (x)
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# define htonl(x) __bswap_32 (x)
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# define htons(x) __bswap_16 (x)
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# endif
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# endif
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#endif
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#define IN6_IS_ADDR_UNSPECIFIED(a) \
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(((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
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((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
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#define IN6_IS_ADDR_LOOPBACK(a) \
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(((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
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((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == htonl (1))
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#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
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#define IN6_IS_ADDR_LINKLOCAL(a) \
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((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
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#define IN6_IS_ADDR_SITELOCAL(a) \
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((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000))
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#define IN6_IS_ADDR_V4MAPPED(a) \
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((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
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(((uint32_t *) (a))[2] == htonl (0xffff)))
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#define IN6_IS_ADDR_V4COMPAT(a) \
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((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
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(((uint32_t *) (a))[2] == 0) && (ntohl (((uint32_t *) (a))[3]) > 1))
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#define IN6_ARE_ADDR_EQUAL(a,b) \
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((((uint32_t *) (a))[0] == ((uint32_t *) (b))[0]) && \
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(((uint32_t *) (a))[1] == ((uint32_t *) (b))[1]) && \
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(((uint32_t *) (a))[2] == ((uint32_t *) (b))[2]) && \
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(((uint32_t *) (a))[3] == ((uint32_t *) (b))[3]))
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/* Bind socket to a privileged IP port. */
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extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
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/* The IPv6 version of this function. */
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extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
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__THROW;
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#define IN6_IS_ADDR_MC_NODELOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x1))
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#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x2))
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#define IN6_IS_ADDR_MC_SITELOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x5))
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#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x8))
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#define IN6_IS_ADDR_MC_GLOBAL(a) \
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(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))
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/* IPv6 packet information. */
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struct in6_pktinfo
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{
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struct in6_addr ipi6_addr; /* src/dst IPv6 address */
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unsigned int ipi6_ifindex; /* send/recv interface index */
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};
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__END_DECLS
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#endif /* netinet/in.h */
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