usr/src/sys/netinet/in.h

/*
 * Copyright (c) 1982, 1986, 1990 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)in.h	7.11 (Berkeley) %G%
 */

/*
 * Constants and structures defined by the internet system,
 * Per RFC 790, September 1981.
 */

/*
 * Protocols
 */
#define	IPPROTO_IP		0		/* dummy for IP */
#define	IPPROTO_ICMP		1		/* control message protocol */
#define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
#define	IPPROTO_TCP		6		/* tcp */
#define	IPPROTO_EGP		8		/* exterior gateway protocol */
#define	IPPROTO_PUP		12		/* pup */
#define	IPPROTO_UDP		17		/* user datagram protocol */
#define	IPPROTO_IDP		22		/* xns idp */
#define	IPPROTO_TP		29 		/* tp-4 w/ class negotiation */
#define	IPPROTO_EON		80		/* ISO cnlp */

#define	IPPROTO_RAW		255		/* raw IP packet */
#define	IPPROTO_MAX		256


/*
 * Local port number conventions:
 * Ports < IPPORT_RESERVED are reserved for
 * privileged processes (e.g. root).
 * Ports > IPPORT_USERRESERVED are reserved
 * for servers, not necessarily privileged.
 */
#define	IPPORT_RESERVED		1024
#define	IPPORT_USERRESERVED	5000

/*
 * Internet address (a structure for historical reasons)
 */
struct in_addr {
	u_long s_addr;
};

/*
 * Definitions of bits in internet address integers.
 * On subnets, the decomposition of addresses to host and net parts
 * is done according to subnet mask, not the masks here.
 */
#define	IN_CLASSA(i)		(((long)(i) & 0x80000000) == 0)
#define	IN_CLASSA_NET		0xff000000
#define	IN_CLASSA_NSHIFT	24
#define	IN_CLASSA_HOST		0x00ffffff
#define	IN_CLASSA_MAX		128

#define	IN_CLASSB(i)		(((long)(i) & 0xc0000000) == 0x80000000)
#define	IN_CLASSB_NET		0xffff0000
#define	IN_CLASSB_NSHIFT	16
#define	IN_CLASSB_HOST		0x0000ffff
#define	IN_CLASSB_MAX		65536

#define	IN_CLASSC(i)		(((long)(i) & 0xe0000000) == 0xc0000000)
#define	IN_CLASSC_NET		0xffffff00
#define	IN_CLASSC_NSHIFT	8
#define	IN_CLASSC_HOST		0x000000ff

#define	IN_CLASSD(i)		(((long)(i) & 0xf0000000) == 0xe0000000)
#define	IN_MULTICAST(i)		IN_CLASSD(i)

#define	IN_EXPERIMENTAL(i)	(((long)(i) & 0xe0000000) == 0xe0000000)
#define	IN_BADCLASS(i)		(((long)(i) & 0xf0000000) == 0xf0000000)

#define	INADDR_ANY		(u_long)0x00000000
#define	INADDR_BROADCAST	(u_long)0xffffffff	/* must be masked */
#ifndef KERNEL
#define	INADDR_NONE		0xffffffff		/* -1 return */
#endif

#define	IN_LOOPBACKNET		127			/* official! */

/*
 * Socket address, internet style.
 */
struct sockaddr_in {
	u_char	sin_len;
	u_char	sin_family;
	u_short	sin_port;
	struct	in_addr sin_addr;
	char	sin_zero[8];
};

/*
 * Structure used to describe IP options.
 * Used to store options internally, to pass them to a process,
 * or to restore options retrieved earlier.
 * The ip_dst 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, 0 w/o src rt */
	char	ip_opts[40];		/* actually variable in size */
};

/*
 * Options for use with [gs]etsockopt at the IP level.
 * First word of comment is data type; bool is stored in int.
 */
#define	IP_OPTIONS	1	/* buf/ip_opts; set/get IP per-packet options */
#define	IP_HDRINCL	2	/* int; header is included with data (raw) */
#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 */

#ifdef KERNEL
extern	struct domain inetdomain;
extern	struct protosw inetsw[];
struct	in_addr in_makeaddr();
u_long	in_netof(), in_lnaof();
#endif
Commit	Line	Data
	1	/*
	2	* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*
	7	* @(#)in.h 7.11 (Berkeley) %G%
	8	*/
	9
	10	/*
	11	* Constants and structures defined by the internet system,
	12	* Per RFC 790, September 1981.
	13	*/
	14
	15	/*
	16	* Protocols
	17	*/
	18	#define IPPROTO_IP 0 /* dummy for IP */
	19	#define IPPROTO_ICMP 1 /* control message protocol */
	20	#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
	21	#define IPPROTO_TCP 6 /* tcp */
	22	#define IPPROTO_EGP 8 /* exterior gateway protocol */
	23	#define IPPROTO_PUP 12 /* pup */
	24	#define IPPROTO_UDP 17 /* user datagram protocol */
	25	#define IPPROTO_IDP 22 /* xns idp */
	26	#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
	27	#define IPPROTO_EON 80 /* ISO cnlp */
	28
	29	#define IPPROTO_RAW 255 /* raw IP packet */
	30	#define IPPROTO_MAX 256
	31
	32
	33	/*
	34	* Local port number conventions:
	35	* Ports < IPPORT_RESERVED are reserved for
	36	* privileged processes (e.g. root).
	37	* Ports > IPPORT_USERRESERVED are reserved
	38	* for servers, not necessarily privileged.
	39	*/
	40	#define IPPORT_RESERVED 1024
	41	#define IPPORT_USERRESERVED 5000
	42
	43	/*
	44	* Internet address (a structure for historical reasons)
	45	*/
	46	struct in_addr {
	47	u_long s_addr;
	48	};
	49
	50	/*
	51	* Definitions of bits in internet address integers.
	52	* On subnets, the decomposition of addresses to host and net parts
	53	* is done according to subnet mask, not the masks here.
	54	*/
	55	#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
	56	#define IN_CLASSA_NET 0xff000000
	57	#define IN_CLASSA_NSHIFT 24
	58	#define IN_CLASSA_HOST 0x00ffffff
	59	#define IN_CLASSA_MAX 128
	60
	61	#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
	62	#define IN_CLASSB_NET 0xffff0000
	63	#define IN_CLASSB_NSHIFT 16
	64	#define IN_CLASSB_HOST 0x0000ffff
	65	#define IN_CLASSB_MAX 65536
	66
	67	#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
	68	#define IN_CLASSC_NET 0xffffff00
	69	#define IN_CLASSC_NSHIFT 8
	70	#define IN_CLASSC_HOST 0x000000ff
	71
	72	#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
	73	#define IN_MULTICAST(i) IN_CLASSD(i)
	74
	75	#define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000)
	76	#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
	77
	78	#define INADDR_ANY (u_long)0x00000000
	79	#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
	80	#ifndef KERNEL
	81	#define INADDR_NONE 0xffffffff /* -1 return */
	82	#endif
	83
	84	#define IN_LOOPBACKNET 127 /* official! */
	85
	86	/*
	87	* Socket address, internet style.
	88	*/
	89	struct sockaddr_in {
	90	u_char sin_len;
	91	u_char sin_family;
	92	u_short sin_port;
	93	struct in_addr sin_addr;
	94	char sin_zero[8];
	95	};
	96
	97	/*
	98	* Structure used to describe IP options.
	99	* Used to store options internally, to pass them to a process,
	100	* or to restore options retrieved earlier.
	101	* The ip_dst is used for the first-hop gateway when using a source route
	102	* (this gets put into the header proper).
	103	*/
	104	struct ip_opts {
	105	struct in_addr ip_dst; /* first hop, 0 w/o src rt */
	106	char ip_opts[40]; /* actually variable in size */
	107	};
	108
	109	/*
	110	* Options for use with [gs]etsockopt at the IP level.
	111	* First word of comment is data type; bool is stored in int.
	112	*/
	113	#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */
	114	#define IP_HDRINCL 2 /* int; header is included with data (raw) */
	115	#define IP_TOS 3 /* int; IP type of service and precedence */
	116	#define IP_TTL 4 /* int; IP time to live */
	117	#define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */
	118	#define IP_RECVRETOPTS 6 /* bool; receive IP options for response */
	119	#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */
	120	#define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */
	121
	122	#ifdef KERNEL
	123	extern struct domain inetdomain;
	124	extern struct protosw inetsw[];
	125	struct in_addr in_makeaddr();
	126	u_long in_netof(), in_lnaof();
	127	#endif