/* Copyright (C) 1991,92,93,94,95,96,97,98,99 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 Library General Public License as published by the Free Software Foundation; either version 2 of the License, 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 Library 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 <limits.h> #include <stdint.h> #include <sys/types.h> #include <bits/socket.h> __BEGIN_DECLS /* Standard well-defined IP protocols. */ enum { IPPROTO_IP = 0, /* Dummy protocol for TCP. */ IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */ 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_TP = 29, /* SO Transport Protocol Class 4. */ IPPROTO_IPV6 = 41, /* IPv6 header. */ IPPROTO_ROUTING = 43, /* IPv6 routing header. */ IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */ IPPROTO_RSVP = 46, /* Reservation Protocol. */ IPPROTO_GRE = 47, /* General Routing Encapsulation. */ IPPROTO_ESP = 50, /* encapsulating security payload. */ IPPROTO_AH = 51, /* authentication header. */ IPPROTO_ICMPV6 = 58, /* ICMPv6. */ IPPROTO_NONE = 59, /* IPv6 no next header. */ IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */ IPPROTO_MTP = 92, /* Multicast Transport Protocol. */ IPPROTO_ENCAP = 98, /* Encapsulation Header. */ IPPROTO_PIM = 103, /* Protocol Independent Multicast. */ IPPROTO_COMP = 108, /* Compression Header Protocol. */ 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 { uint32_t 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) ((((uint32_t) (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) ((((uint32_t) (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) ((((uint32_t) (a)) & 0xe0000000) == 0xc0000000) #define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) #define IN_CLASSD(a) ((((uint32_t) (a)) & 0xf0000000) == 0xe0000000) #define IN_MULTICAST(a) IN_CLASSD(a) #define IN_EXPERIMENTAL(a) ((((uint32_t) (a)) & 0xe0000000) == 0xe0000000) #define IN_BADCLASS(a) ((((uint32_t) (a)) & 0xf0000000) == 0xf0000000) /* Address to accept any incoming messages. */ #define INADDR_ANY ((uint32_t) 0x00000000) /* Address to send to all hosts. */ #define INADDR_BROADCAST ((uint32_t) 0xffffffff) /* Address indicating an error return. */ #define INADDR_NONE ((uint32_t) 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 ((uint32_t) 0x7f000001) /* Inet 127.0.0.1. */ #endif /* Defines for Multicast INADDR. */ #define INADDR_UNSPEC_GROUP ((uint32_t) 0xe0000000) /* 224.0.0.0 */ #define INADDR_ALLHOSTS_GROUP ((uint32_t) 0xe0000001) /* 224.0.0.1 */ #define INADDR_ALLRTRS_GROUP ((uint32_t) 0xe0000002) /* 224.0.0.2 */ #define INADDR_MAX_LOCAL_GROUP ((uint32_t) 0xe00000ff) /* 224.0.0.255 */ /* IPv6 address */ struct in6_addr { union { uint8_t u6_addr8[16]; uint16_t u6_addr16[8]; uint32_t u6_addr32[4]; #if ULONG_MAX > 0xffffffff uint64_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 <bits/sockaddr.h> /* Structure describing an Internet socket address. */ struct sockaddr_in { __SOCKADDR_COMMON (sin_); uint16_t 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 (uint16_t) - sizeof (struct in_addr)]; }; /* Ditto, for IPv6. */ struct sockaddr_in6 { __SOCKADDR_COMMON (sin6_); uint16_t sin6_port; /* Transport layer port # */ uint32_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 interface */ unsigned int ipv6mr_interface; }; /* Get system-specific definitions. */ #include <bits/in.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 uint32_t ntohl __P ((uint32_t __netlong)); extern uint16_t ntohs __P ((uint16_t __netshort)); extern uint32_t htonl __P ((uint32_t __hostlong)); extern uint16_t htons __P ((uint16_t __hostshort)); #include <endian.h> /* Get machine dependent optimized versions of byte swapping functions. */ #include <bits/byteswap.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) #else # if __BYTE_ORDER == __LITTLE_ENDIAN # define ntohl(x) __bswap_32 (x) # define ntohs(x) __bswap_16 (x) # define htonl(x) __bswap_32 (x) # define htons(x) __bswap_16 (x) # endif #endif #define IN6_IS_ADDR_UNSPECIFIED(a) \ (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \ ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0) #define IN6_IS_ADDR_LOOPBACK(a) \ (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \ ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == htonl (1)) #define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff) #define IN6_IS_ADDR_LINKLOCAL(a) \ ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000)) #define IN6_IS_ADDR_SITELOCAL(a) \ ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000)) #define IN6_IS_ADDR_V4MAPPED(a) \ ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \ (((uint32_t *) (a))[2] == htonl (0xffff))) #define IN6_IS_ADDR_V4COMPAT(a) \ ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \ (((uint32_t *) (a))[2] == 0) && (ntohl (((uint32_t *) (a))[3]) > 1)) #define IN6_ARE_ADDR_EQUAL(a,b) \ ((((uint32_t *) (a))[0] == ((uint32_t *) (b))[0]) && \ (((uint32_t *) (a))[1] == ((uint32_t *) (b))[2]) && \ (((uint32_t *) (a))[2] == ((uint32_t *) (b))[1]) && \ (((uint32_t *) (a))[3] == ((uint32_t *) (b))[3])) /* Bind socket to a privileged IP port. */ extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sock_in)); #define IN6_IS_ADDR_MC_NODELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x1)) #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x2)) #define IN6_IS_ADDR_MC_SITELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x5)) #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x8)) #define IN6_IS_ADDR_MC_GLOBAL(a) \ (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0xe)) /* IPv6 packet information. */ struct in6_pktinfo { struct in6_addr ipi6_addr; /* src/dst IPv6 address */ unsigned int ipi6_ifindex; /* send/recv interface index */ }; __END_DECLS #endif /* netinet/in.h */