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+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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_ICMPV6 = 58, /* ICMPv6. */
+
+ 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 ((unsigned) 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 ((unsigned) 0x7f000001) /* Inet address 127.0.0.1. */
+#endif
+
+
+/* IPv6 address */
+struct in6_addr
+ {
+ union
+ {
+ u_int8_t u6_addr8[16];
+ u_int16_t u6_addr16[8];
+ u_int32_t u6_addr32[4];
+#if (~0UL) > 0xffffffff
+ u_int64_t u6_addr64[2];
+#endif
+ } in6_u;
+#define s6_addr in6_u.u6_addr8
+#define s6_addr16 in6_u.u6_addr16
+#define s6_addr32 in6_u.u6_addr32
+#define s6_addr64 in6_u.u6_addr64
+ };
+
+extern const struct in6_addr in6addr_any; /* :: */
+extern const struct in6_addr in6addr_loopback; /* ::1 */
+#define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+#define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
+
+#define INET_ADDRSTRLEN 16
+#define INET6_ADDRSTRLEN 46
+
+/* 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)];
+ };
+
+/* Ditto, for IPv6. */
+struct sockaddr_in6
+ {
+ __SOCKADDR_COMMON (sin6_);
+ u_int16_t sin6_port; /* Transport layer port # */
+ u_int32_t sin6_flowinfo; /* IPv6 flow information */
+ struct in6_addr sin6_addr; /* IPv6 address */
+ };
+
+/* IPv6 multicast request. */
+struct ipv6_mreq
+ {
+ /* IPv6 multicast address of group */
+ struct in6_addr ipv6mr_multiaddr;
+
+ /* local IPv6 address of interface */
+ int ipv6mr_ifindex;
+ };
+
+/* Get system-specific definitions. */
+#include <netinet/inbits.h>
+
+/* 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
+
+#define IN6_IS_ADDR_UNSPECIFIED(a) \
+ ((((u_int32_t *) (a))[0] == 0) && ((u_int32_t *) (a))[1] == 0) && \
+ (((u_int32_t *) (a))[2] == 0) && ((u_int32_t *) (a))[3] == 0))
+
+#define IN6_IS_ADDR_LOOPBACK(a) \
+ ((((u_int32_t *) (a))[0] == 0) && ((u_int32_t *) (a))[1] == 0) && \
+ (((u_int32_t *) (a))[2] == 0) && ((u_int32_t *) (a))[3] == htonl (1)))
+
+#define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)
+
+#define IN6_IS_ADDR_LINKLOCAL(a) \
+ ((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
+
+#define IN6_IS_ADDR_SITELOCAL(a) \
+ ((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000))
+
+#define IN6_IS_ADDR_V4MAPPED(a) \
+ ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
+ (((u_int32_t *) (a))[2] == htonl (0xffff)))
+
+#define IN6_IS_ADDR_V4COMPAT(a) \
+ ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
+ (((u_int32_t *) (a))[2] == 0) && (ntohl (((u_int32_t *) (a))[3]) > 1))
+
+
+/* Bind socket to a privileged IP port. */
+extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sin));
+
+
+/* IPv6 packet information. */
+struct in6_pktinfo
+ {
+ struct in6_addr ipi6_addr; /* src/dst IPv6 address */
+ int ipi6_ifindex; /* send/recv interface index */
+ };
+
+__END_DECLS
+
+#endif /* netinet/in.h */