/* Copyright (C) 1991, 92, 93, 94, 95, 96 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 General Public License along with the GNU C Library; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _NETINET_IN_H #define _NETINET_IN_H 1 #include #include /* 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_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_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 }; /* Link numbers. */ #define IMPLINK_IP 155 #define IMPLINK_LOWEXPER 156 #define IMPLINK_HIGHEXPER 158 /* 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 /* Get the definition of the macro to define the common sockaddr members. */ #include /* 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_OPTIONS 1 /* ip_opts; IP per-packet options. */ #define IP_HDRINCL 2 /* int; Header is included with data. */ #define IP_TOS 3 /* int; IP type of service and precedence. */ #define IP_TTL 4 /* int; IP time to live. */ #define IP_RECVOPTS 5 /* bool; Receive all IP options w/datagram. */ #define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */ #define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */ #define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */ #define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */ #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ #define IP_MULTICAST_LOOP 11 /* i_char; set/get IP multicast loopback */ #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS. 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. */ extern unsigned long int ntohl __P ((unsigned long int)); extern unsigned short int ntohs __P ((unsigned short int)); extern unsigned long int htonl __P ((unsigned long int)); extern unsigned short int htons __P ((unsigned short int)); #include #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 #endif /* netinet/in.h */