[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / netinet / in.h

/* 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>


/* 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_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


/* 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_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 */

/* 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.  */

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 <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

#endif	/* netinet/in.h */
Commit	Line	Data
df4ef2ab	1	/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
54d79e99 UD	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU General Public License as published by
	6	the Free Software Foundation; either version 2, or (at your option)
	7	any later version.
	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU General Public License for more details.
	13
	14	You should have received a copy of the GNU Library General Public
	15	License along with the GNU C Library; see the file COPYING.LIB. If not,
	16	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	17	Boston, MA 02111-1307, USA. */
28f540f4 RM	18
	19	#ifndef _NETINET_IN_H
	20
	21	#define _NETINET_IN_H 1
	22	#include <features.h>
	23
	24	#include <sys/socket.h>
f8b87ef0	25
28f540f4	26
df4ef2ab UD	27	/* Standard well-defined IP protocols. */
	28	enum
	29	{
	30	IPPROTO_IP = 0, /* Dummy protocol for TCP. */
	31	IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
	32	IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
	33	IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
	34	IPPROTO_TCP = 6, /* Transmission Control Protocol. */
	35	IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
	36	IPPROTO_PUP = 12, /* PUP protocol. */
	37	IPPROTO_UDP = 17, /* User Datagram Protocol. */
	38	IPPROTO_IDP = 22, /* XNS IDP protocol. */
	39
	40	IPPROTO_RAW = 255, /* Raw IP packets. */
	41	IPPROTO_MAX
	42	};
	43
	44	/* Standard well-known ports. */
28f540f4 RM	45	enum
	46	{
	47	IPPORT_ECHO = 7, /* Echo service. */
	48	IPPORT_DISCARD = 9, /* Discard transmissions service. */
	49	IPPORT_SYSTAT = 11, /* System status service. */
	50	IPPORT_DAYTIME = 13, /* Time of day service. */
	51	IPPORT_NETSTAT = 15, /* Network status service. */
	52	IPPORT_FTP = 21, /* File Transfer Protocol. */
	53	IPPORT_TELNET = 23, /* Telnet protocol. */
	54	IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
	55	IPPORT_TIMESERVER = 37, /* Timeserver service. */
	56	IPPORT_NAMESERVER = 42, /* Domain Name Service. */
293e360a	57	IPPORT_WHOIS = 43, /* Internet Whois service. */
28f540f4 RM	58	IPPORT_MTP = 57,
	59
	60	IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
	61	IPPORT_RJE = 77,
	62	IPPORT_FINGER = 79, /* Finger service. */
	63	IPPORT_TTYLINK = 87,
	64	IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
	65
	66
	67	IPPORT_EXECSERVER = 512, /* execd service. */
	68	IPPORT_LOGINSERVER = 513, /* rlogind service. */
	69	IPPORT_CMDSERVER = 514,
	70	IPPORT_EFSSERVER = 520,
	71
	72	/* UDP ports. */
	73	IPPORT_BIFFUDP = 512,
	74	IPPORT_WHOSERVER = 513,
	75	IPPORT_ROUTESERVER = 520,
	76
	77	/* Ports less than this value are reserved for privileged processes. */
	78	IPPORT_RESERVED = 1024,
	79
	80	/* Ports greater this value are reserved for (non-privileged) servers. */
59dd8641	81	IPPORT_USERRESERVED = 5000
28f540f4 RM	82	};
	83
	84
df4ef2ab UD	85	/* Internet address. */
	86	struct in_addr
	87	{
	88	unsigned int s_addr;
	89	};
	90
	91
	92	/* Definitions of the bits in an Internet address integer.
	93
	94	On subnets, host and network parts are found according to
	95	the subnet mask, not these masks. */
	96
	97	#define IN_CLASSA(a) ((((unsigned) (a)) & 0x80000000) == 0)
	98	#define IN_CLASSA_NET 0xff000000
	99	#define IN_CLASSA_NSHIFT 24
	100	#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
	101	#define IN_CLASSA_MAX 128
	102
	103	#define IN_CLASSB(a) ((((unsigned) (a)) & 0xc0000000) == 0x80000000)
	104	#define IN_CLASSB_NET 0xffff0000
	105	#define IN_CLASSB_NSHIFT 16
	106	#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
	107	#define IN_CLASSB_MAX 65536
	108
	109	#define IN_CLASSC(a) ((((unsigned) (a)) & 0xc0000000) == 0xc0000000)
	110	#define IN_CLASSC_NET 0xffffff00
	111	#define IN_CLASSC_NSHIFT 8
	112	#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
	113
	114	#define IN_CLASSD(a) ((((unsigned) (a)) & 0xf0000000) == 0xe0000000)
	115	#define IN_MULTICAST(a) IN_CLASSD(a)
	116
	117	#define IN_EXPERIMENTAL(a) ((((unsigned) (a)) & 0xe0000000) == 0xe0000000)
	118	#define IN_BADCLASS(a) ((((unsigned) (a)) & 0xf0000000) == 0xf0000000)
	119
	120	/* Address to accept any incoming messages. */
	121	#define INADDR_ANY ((unsigned) 0x00000000)
	122	/* Address to send to all hosts. */
	123	#define INADDR_BROADCAST ((unsigned) 0xffffffff)
	124	/* Address indicating an error return. */
	125	#define INADDR_NONE 0xffffffff
	126
	127	/* Network number for local host loopback. */
	128	#define IN_LOOPBACKNET 127
	129	/* Address to loopback in software to local host. */
	130	#ifndef INADDR_LOOPBACK
	131	#define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */
	132	#endif
	133
28f540f4	134
28f540f4 RM	135	/* Get the definition of the macro to define the common sockaddr members. */
	136	#include <sockaddrcom.h>
	137
df4ef2ab UD	138
	139	/* Structure describing an Internet socket address. */
	140	struct sockaddr_in
	141	{
	142	__SOCKADDR_COMMON (sin_);
	143	unsigned short int sin_port; /* Port number. */
	144	struct in_addr sin_addr; /* Internet address. */
	145
	146	/* Pad to size of `struct sockaddr'. */
	147	unsigned char sin_zero[sizeof(struct sockaddr) -
	148	__SOCKADDR_COMMON_SIZE -
	149	sizeof(unsigned short int) -
	150	sizeof(struct in_addr)];
	151	};
	152
	153
	154	/* Options for use with `getsockopt' and `setsockopt' at the IP level.
	155	The first word in the comment at the right is the data type used;
	156	"bool" means a boolean value stored in an `int'. */
	157	#define IP_TOS 1 /* int; IP type of service and precedence. */
	158	#define IP_TTL 2 /* int; IP time to live. */
	159	#define IP_HDRINCL 3 /* int; Header is included with data. */
	160	#define IP_OPTIONS 4 /* ip_opts; IP per-packet options. */
	161	#define IP_MULTICAST_IF 32 /* in_addr; set/get IP multicast i/f */
	162	#define IP_MULTICAST_TTL 33 /* u_char; set/get IP multicast ttl */
	163	#define IP_MULTICAST_LOOP 34 /* i_char; set/get IP multicast loopback */
	164	#define IP_ADD_MEMBERSHIP 35 /* ip_mreq; add an IP group membership */
	165	#define IP_DROP_MEMBERSHIP 36 /* ip_mreq; drop an IP group membership */
	166
	167	/* Structure used to describe IP options for IP_OPTIONS. The `ip_dst'
	168	field is used for the first-hop gateway when using a source route
	169	(this gets put into the header proper). */
293e360a	170	struct ip_opts
28f540f4 RM	171	{
	172	struct in_addr ip_dst; /* First hop; zero without source route. */
	173	char ip_opts[40]; /* Actually variable in size. */
	174	};
	175
df4ef2ab UD	176	/* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
	177	struct ip_mreq
	178	{
	179	struct in_addr imr_multiaddr; /* IP multicast address of group */
	180	struct in_addr imr_interface; /* local IP address of interface */
	181	};
a3e59be8	182
28f540f4 RM	183	/* Functions to convert between host and network byte order. */
28f540f4 RM	184
df4ef2ab UD	185	extern unsigned long int ntohl __P ((unsigned long int));
	186	extern unsigned short int ntohs __P ((unsigned short int));
	187	extern unsigned long int htonl __P ((unsigned long int));
	188	extern unsigned short int htons __P ((unsigned short int));
a3e59be8	189
28f540f4 RM	190	#include <endian.h>
	191
	192	#if __BYTE_ORDER == __BIG_ENDIAN
	193	/* The host byte order is the same as network byte order,
	194	so these functions are all just identity. */
df4ef2ab UD	195	#define ntohl(x) (x)
	196	#define ntohs(x) (x)
	197	#define htonl(x) (x)
	198	#define htons(x) (x)
28f540f4 RM	199	#endif
	200
	201	#endif /* netinet/in.h */