[unix-history] / sys / netinet / in.h

/*
 * Copyright (c) 1982, 1986, 1990 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)in.h	7.11 (Berkeley) 4/20/91
 */

#ifndef _NETINET_IN_H_
#define _NETINET_IN_H_

/*
 * 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
struct	in_addr in_makeaddr();
u_long	in_netof(), in_lnaof();
#endif

#endif	/* _NETINET_IN_H_ */
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
	33	* @(#)in.h 7.11 (Berkeley) 4/20/91
	34	*/
	35
eede8c2a JH	36	#ifndef _NETINET_IN_H_
	37	#define _NETINET_IN_H_
	38
15637ed4 RG	39	/*
	40	* Constants and structures defined by the internet system,
	41	* Per RFC 790, September 1981.
	42	*/
	43
	44	/*
	45	* Protocols
	46	*/
	47	#define IPPROTO_IP 0 /* dummy for IP */
	48	#define IPPROTO_ICMP 1 /* control message protocol */
	49	#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
	50	#define IPPROTO_TCP 6 /* tcp */
	51	#define IPPROTO_EGP 8 /* exterior gateway protocol */
	52	#define IPPROTO_PUP 12 /* pup */
	53	#define IPPROTO_UDP 17 /* user datagram protocol */
	54	#define IPPROTO_IDP 22 /* xns idp */
	55	#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
	56	#define IPPROTO_EON 80 /* ISO cnlp */
	57
	58	#define IPPROTO_RAW 255 /* raw IP packet */
	59	#define IPPROTO_MAX 256
	60
	61
	62	/*
	63	* Local port number conventions:
	64	* Ports < IPPORT_RESERVED are reserved for
	65	* privileged processes (e.g. root).
	66	* Ports > IPPORT_USERRESERVED are reserved
	67	* for servers, not necessarily privileged.
	68	*/
	69	#define IPPORT_RESERVED 1024
	70	#define IPPORT_USERRESERVED 5000
	71
	72	/*
	73	* Internet address (a structure for historical reasons)
	74	*/
	75	struct in_addr {
	76	u_long s_addr;
	77	};
	78
	79	/*
	80	* Definitions of bits in internet address integers.
	81	* On subnets, the decomposition of addresses to host and net parts
	82	* is done according to subnet mask, not the masks here.
	83	*/
	84	#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
	85	#define IN_CLASSA_NET 0xff000000
	86	#define IN_CLASSA_NSHIFT 24
	87	#define IN_CLASSA_HOST 0x00ffffff
	88	#define IN_CLASSA_MAX 128
	89
	90	#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
	91	#define IN_CLASSB_NET 0xffff0000
	92	#define IN_CLASSB_NSHIFT 16
	93	#define IN_CLASSB_HOST 0x0000ffff
	94	#define IN_CLASSB_MAX 65536
	95
	96	#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
	97	#define IN_CLASSC_NET 0xffffff00
	98	#define IN_CLASSC_NSHIFT 8
	99	#define IN_CLASSC_HOST 0x000000ff
	100
	101	#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
	102	#define IN_MULTICAST(i) IN_CLASSD(i)
103
104	#define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000)
105	#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
106
107	#define INADDR_ANY (u_long)0x00000000
108	#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
109	#ifndef KERNEL
110	#define INADDR_NONE 0xffffffff /* -1 return */
111	#endif
112
113	#define IN_LOOPBACKNET 127 /* official! */
114
115	/*
116	* Socket address, internet style.
117	*/
118	struct sockaddr_in {
119	u_char sin_len;
120	u_char sin_family;
121	u_short sin_port;
122	struct in_addr sin_addr;
123	char sin_zero[8];
124	};
125
126	/*
127	* Structure used to describe IP options.
128	* Used to store options internally, to pass them to a process,
129	* or to restore options retrieved earlier.
130	* The ip_dst is used for the first-hop gateway when using a source route
131	* (this gets put into the header proper).
132	*/
133	struct ip_opts {
134	struct in_addr ip_dst; /* first hop, 0 w/o src rt */
135	char ip_opts[40]; /* actually variable in size */
136	};
137
138	/*
139	* Options for use with [gs]etsockopt at the IP level.
140	* First word of comment is data type; bool is stored in int.
141	*/
142	#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */
143	#define IP_HDRINCL 2 /* int; header is included with data (raw) */
144	#define IP_TOS 3 /* int; IP type of service and precedence */
145	#define IP_TTL 4 /* int; IP time to live */
146	#define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */
147	#define IP_RECVRETOPTS 6 /* bool; receive IP options for response */
148	#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */
149	#define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */
150
151	#ifdef KERNEL
152	struct in_addr in_makeaddr();
153	u_long in_netof(), in_lnaof();
154	#endif
eede8c2a JH	155
eede8c2a JH	156	#endif /* _NETINET_IN_H_ */