xref: /illumos-gate/usr/src/uts/common/netinet/in.h (revision 221e47fb)
17c478bd9Sstevel@tonic-gate /*
2e11c3f44Smeem  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
37c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
49b241b4eSYuri Pankov  *
59b241b4eSYuri Pankov  * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
6*221e47fbSAndy Fiddaman  * Copyright 2020 OmniOS Community Edition (OmniOSce) Association.
77c478bd9Sstevel@tonic-gate  */
87c478bd9Sstevel@tonic-gate /*
97c478bd9Sstevel@tonic-gate  * Copyright (c) 1982, 1986 Regents of the University of California.
107c478bd9Sstevel@tonic-gate  * All rights reserved.
117c478bd9Sstevel@tonic-gate  *
127c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms are permitted
137c478bd9Sstevel@tonic-gate  * provided that this notice is preserved and that due credit is given
147c478bd9Sstevel@tonic-gate  * to the University of California at Berkeley. The name of the University
157c478bd9Sstevel@tonic-gate  * may not be used to endorse or promote products derived from this
167c478bd9Sstevel@tonic-gate  * software without specific prior written permission. This software
177c478bd9Sstevel@tonic-gate  * is provided ``as is'' without express or implied warranty.
187c478bd9Sstevel@tonic-gate  */
197c478bd9Sstevel@tonic-gate 
207c478bd9Sstevel@tonic-gate /*
217c478bd9Sstevel@tonic-gate  * Constants and structures defined by the internet system,
227c478bd9Sstevel@tonic-gate  * according to following documents
237c478bd9Sstevel@tonic-gate  *
247962806fSGordon Ross  * Internet ASSIGNED NUMBERS (RFC1700) and its successors:
257962806fSGordon Ross  *	http://www.iana.org/assignments/protocol-numbers
267962806fSGordon Ross  *	http://www.iana.org/assignments/port-numbers
277c478bd9Sstevel@tonic-gate  * Basic Socket Interface Extensions for IPv6 (RFC2133 and its successors)
287c478bd9Sstevel@tonic-gate  *
297c478bd9Sstevel@tonic-gate  */
307c478bd9Sstevel@tonic-gate 
317c478bd9Sstevel@tonic-gate #ifndef _NETINET_IN_H
327c478bd9Sstevel@tonic-gate #define	_NETINET_IN_H
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate #include <sys/feature_tests.h>
357c478bd9Sstevel@tonic-gate 
367c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
377c478bd9Sstevel@tonic-gate extern "C" {
387c478bd9Sstevel@tonic-gate #endif
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate #include <sys/types.h>
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
437c478bd9Sstevel@tonic-gate #include <sys/socket_impl.h>
447c478bd9Sstevel@tonic-gate #endif	/* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
457c478bd9Sstevel@tonic-gate 
467c478bd9Sstevel@tonic-gate #ifndef _SOCKLEN_T
477c478bd9Sstevel@tonic-gate #define	_SOCKLEN_T
487c478bd9Sstevel@tonic-gate 
497c478bd9Sstevel@tonic-gate /*
507c478bd9Sstevel@tonic-gate  * The socklen definitions are reproduced here from sys/socket.h so as to
517c478bd9Sstevel@tonic-gate  * not introduce that namespace into existing users of netinet/in.h.
527c478bd9Sstevel@tonic-gate  */
537c478bd9Sstevel@tonic-gate #if defined(_XPG4_2) && !defined(_XPG5) && !defined(_LP64)
547c478bd9Sstevel@tonic-gate typedef	size_t		socklen_t;
557c478bd9Sstevel@tonic-gate #else
567c478bd9Sstevel@tonic-gate typedef	uint32_t	socklen_t;
577c478bd9Sstevel@tonic-gate #endif	/* defined(_XPG4_2) && !defined(_XPG5) && !defined(_LP64) */
587c478bd9Sstevel@tonic-gate 
597c478bd9Sstevel@tonic-gate #if defined(_XPG4_2) || defined(_BOOT)
607c478bd9Sstevel@tonic-gate typedef	socklen_t	*Psocklen_t;
617c478bd9Sstevel@tonic-gate #else
627c478bd9Sstevel@tonic-gate typedef	void		*Psocklen_t;
637c478bd9Sstevel@tonic-gate #endif	/* defined(_XPG4_2) || defined(_BOOT) */
647c478bd9Sstevel@tonic-gate 
657c478bd9Sstevel@tonic-gate #endif /* _SOCKLEN_T */
667c478bd9Sstevel@tonic-gate 
677c478bd9Sstevel@tonic-gate /*
687c478bd9Sstevel@tonic-gate  * Symbols such as htonl() are required to be exposed through this file,
697c478bd9Sstevel@tonic-gate  * per XNS Issue 5. This is achieved by inclusion of <sys/byteorder.h>
707c478bd9Sstevel@tonic-gate  */
717c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5)
727c478bd9Sstevel@tonic-gate #include <sys/byteorder.h>
737c478bd9Sstevel@tonic-gate #endif
747c478bd9Sstevel@tonic-gate 
757c478bd9Sstevel@tonic-gate #ifndef _IN_PORT_T
767c478bd9Sstevel@tonic-gate #define	_IN_PORT_T
777c478bd9Sstevel@tonic-gate typedef	uint16_t	in_port_t;
787c478bd9Sstevel@tonic-gate #endif
797c478bd9Sstevel@tonic-gate 
807c478bd9Sstevel@tonic-gate /*
817c478bd9Sstevel@tonic-gate  * Note: IPv4 address data structures usage conventions.
827c478bd9Sstevel@tonic-gate  * The "in_addr_t" type below (required by Unix standards)
837c478bd9Sstevel@tonic-gate  * is NOT a typedef of "struct in_addr" and violates the usual
847c478bd9Sstevel@tonic-gate  * conventions where "struct <name>" and <name>_t are corresponding
857c478bd9Sstevel@tonic-gate  * typedefs.
867c478bd9Sstevel@tonic-gate  * To minimize confusion, kernel data structures/usage prefers use
877c478bd9Sstevel@tonic-gate  * of "ipaddr_t" as atomic uint32_t type and avoid using "in_addr_t"
887c478bd9Sstevel@tonic-gate  * The user level APIs continue to follow the historic popular
897c478bd9Sstevel@tonic-gate  * practice of using "struct in_addr".
907c478bd9Sstevel@tonic-gate  */
917c478bd9Sstevel@tonic-gate #ifndef _IN_ADDR_T
927c478bd9Sstevel@tonic-gate #define	_IN_ADDR_T
937c478bd9Sstevel@tonic-gate typedef	uint32_t	in_addr_t;
947c478bd9Sstevel@tonic-gate #endif
957c478bd9Sstevel@tonic-gate 
967c478bd9Sstevel@tonic-gate #ifndef _IPADDR_T
977c478bd9Sstevel@tonic-gate #define	_IPADDR_T
987c478bd9Sstevel@tonic-gate typedef uint32_t ipaddr_t;
997c478bd9Sstevel@tonic-gate #endif
1007c478bd9Sstevel@tonic-gate 
1017c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
1027c478bd9Sstevel@tonic-gate 
1037c478bd9Sstevel@tonic-gate struct in6_addr {
1047c478bd9Sstevel@tonic-gate 	union {
1057c478bd9Sstevel@tonic-gate 		/*
1067c478bd9Sstevel@tonic-gate 		 * Note: Static initalizers of "union" type assume
1077c478bd9Sstevel@tonic-gate 		 * the constant on the RHS is the type of the first member
1087c478bd9Sstevel@tonic-gate 		 * of union.
1097c478bd9Sstevel@tonic-gate 		 * To make static initializers (and efficient usage) work,
1107c478bd9Sstevel@tonic-gate 		 * the order of members exposed to user and kernel view of
1117c478bd9Sstevel@tonic-gate 		 * this data structure is different.
1127c478bd9Sstevel@tonic-gate 		 * User environment sees specified uint8_t type as first
1137c478bd9Sstevel@tonic-gate 		 * member whereas kernel sees most efficient type as
1147c478bd9Sstevel@tonic-gate 		 * first member.
1157c478bd9Sstevel@tonic-gate 		 */
1167c478bd9Sstevel@tonic-gate #ifdef _KERNEL
1177c478bd9Sstevel@tonic-gate 		uint32_t	_S6_u32[4];	/* IPv6 address */
11839b16bd3SAlexander Pyhalov 		uint16_t	_S6_u16[8];	/* IPv6 address */
1197c478bd9Sstevel@tonic-gate 		uint8_t		_S6_u8[16];	/* IPv6 address */
1207c478bd9Sstevel@tonic-gate #else
1217c478bd9Sstevel@tonic-gate 		uint8_t		_S6_u8[16];	/* IPv6 address */
12239b16bd3SAlexander Pyhalov 		uint16_t	_S6_u16[8];	/* IPv6 address */
1237c478bd9Sstevel@tonic-gate 		uint32_t	_S6_u32[4];	/* IPv6 address */
1247c478bd9Sstevel@tonic-gate #endif
1257c478bd9Sstevel@tonic-gate 		uint32_t	__S6_align;	/* Align on 32 bit boundary */
1267c478bd9Sstevel@tonic-gate 	} _S6_un;
1277c478bd9Sstevel@tonic-gate };
1287c478bd9Sstevel@tonic-gate #define	s6_addr		_S6_un._S6_u8
1297c478bd9Sstevel@tonic-gate 
1307c478bd9Sstevel@tonic-gate #ifdef _KERNEL
1317c478bd9Sstevel@tonic-gate #define	s6_addr8	_S6_un._S6_u8
13239b16bd3SAlexander Pyhalov #define	s6_addr16	_S6_un._S6_u16
1337c478bd9Sstevel@tonic-gate #define	s6_addr32	_S6_un._S6_u32
1347c478bd9Sstevel@tonic-gate #endif
1357c478bd9Sstevel@tonic-gate 
1367c478bd9Sstevel@tonic-gate typedef struct in6_addr in6_addr_t;
1377c478bd9Sstevel@tonic-gate 
1387c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
1397c478bd9Sstevel@tonic-gate 
1407c478bd9Sstevel@tonic-gate #ifndef _SA_FAMILY_T
1417c478bd9Sstevel@tonic-gate #define	_SA_FAMILY_T
1427c478bd9Sstevel@tonic-gate typedef	uint16_t	sa_family_t;
1437c478bd9Sstevel@tonic-gate #endif
1447c478bd9Sstevel@tonic-gate 
1457c478bd9Sstevel@tonic-gate /*
1467c478bd9Sstevel@tonic-gate  * Protocols
14710e6dadfSbrendan  *
14810e6dadfSbrendan  * Some of these constant names are copied for the DTrace IP provider in
14910e6dadfSbrendan  * usr/src/lib/libdtrace/common/{ip.d.in, ip.sed.in}, which should be kept
15010e6dadfSbrendan  * in sync.
1517c478bd9Sstevel@tonic-gate  */
1527c478bd9Sstevel@tonic-gate #define	IPPROTO_IP		0		/* dummy for IP */
1537c478bd9Sstevel@tonic-gate #define	IPPROTO_HOPOPTS		0		/* Hop by hop header for IPv6 */
1547c478bd9Sstevel@tonic-gate #define	IPPROTO_ICMP		1		/* control message protocol */
1557c478bd9Sstevel@tonic-gate #define	IPPROTO_IGMP		2		/* group control protocol */
1567c478bd9Sstevel@tonic-gate #define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
1577c478bd9Sstevel@tonic-gate #define	IPPROTO_ENCAP		4		/* IP in IP encapsulation */
1587c478bd9Sstevel@tonic-gate #define	IPPROTO_TCP		6		/* tcp */
1597c478bd9Sstevel@tonic-gate #define	IPPROTO_EGP		8		/* exterior gateway protocol */
1607c478bd9Sstevel@tonic-gate #define	IPPROTO_PUP		12		/* pup */
1617c478bd9Sstevel@tonic-gate #define	IPPROTO_UDP		17		/* user datagram protocol */
1627c478bd9Sstevel@tonic-gate #define	IPPROTO_IDP		22		/* xns idp */
1637c478bd9Sstevel@tonic-gate #define	IPPROTO_IPV6		41		/* IPv6 encapsulated in IP */
1647c478bd9Sstevel@tonic-gate #define	IPPROTO_ROUTING		43		/* Routing header for IPv6 */
1657c478bd9Sstevel@tonic-gate #define	IPPROTO_FRAGMENT	44		/* Fragment header for IPv6 */
1667c478bd9Sstevel@tonic-gate #define	IPPROTO_RSVP		46		/* rsvp */
1677c478bd9Sstevel@tonic-gate #define	IPPROTO_ESP		50		/* IPsec Encap. Sec. Payload */
1687c478bd9Sstevel@tonic-gate #define	IPPROTO_AH		51		/* IPsec Authentication Hdr. */
1697c478bd9Sstevel@tonic-gate #define	IPPROTO_ICMPV6		58		/* ICMP for IPv6 */
1707c478bd9Sstevel@tonic-gate #define	IPPROTO_NONE		59		/* No next header for IPv6 */
1717c478bd9Sstevel@tonic-gate #define	IPPROTO_DSTOPTS		60		/* Destination options */
1727c478bd9Sstevel@tonic-gate #define	IPPROTO_HELLO		63		/* "hello" routing protocol */
1737c478bd9Sstevel@tonic-gate #define	IPPROTO_ND		77		/* UNOFFICIAL net disk proto */
1747c478bd9Sstevel@tonic-gate #define	IPPROTO_EON		80		/* ISO clnp */
1757c478bd9Sstevel@tonic-gate #define	IPPROTO_OSPF		89		/* OSPF */
1767c478bd9Sstevel@tonic-gate #define	IPPROTO_PIM		103		/* PIM routing protocol */
1777c478bd9Sstevel@tonic-gate #define	IPPROTO_SCTP		132		/* Stream Control */
1787c478bd9Sstevel@tonic-gate 						/* Transmission Protocol */
1797c478bd9Sstevel@tonic-gate 
1807c478bd9Sstevel@tonic-gate #define	IPPROTO_RAW		255		/* raw IP packet */
1817c478bd9Sstevel@tonic-gate #define	IPPROTO_MAX		256
1827c478bd9Sstevel@tonic-gate 
183a8d26fb6Snh #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
18474e20cfeSnh #define	PROTO_SDP		257		/* Sockets Direct Protocol */
185a8d26fb6Snh #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
18674e20cfeSnh 
1877c478bd9Sstevel@tonic-gate /*
1887c478bd9Sstevel@tonic-gate  * Port/socket numbers: network standard functions
189d04ccbb3Scarlsonj  *
190d04ccbb3Scarlsonj  * Entries should exist here for each port number compiled into an ON
191d04ccbb3Scarlsonj  * component, such as snoop.
1927c478bd9Sstevel@tonic-gate  */
1937c478bd9Sstevel@tonic-gate #define	IPPORT_ECHO		7
1947c478bd9Sstevel@tonic-gate #define	IPPORT_DISCARD		9
1957c478bd9Sstevel@tonic-gate #define	IPPORT_SYSTAT		11
1967c478bd9Sstevel@tonic-gate #define	IPPORT_DAYTIME		13
1977c478bd9Sstevel@tonic-gate #define	IPPORT_NETSTAT		15
1987c478bd9Sstevel@tonic-gate #define	IPPORT_CHARGEN		19
1997c478bd9Sstevel@tonic-gate #define	IPPORT_FTP		21
2007c478bd9Sstevel@tonic-gate #define	IPPORT_TELNET		23
2017c478bd9Sstevel@tonic-gate #define	IPPORT_SMTP		25
2027c478bd9Sstevel@tonic-gate #define	IPPORT_TIMESERVER	37
2037c478bd9Sstevel@tonic-gate #define	IPPORT_NAMESERVER	42
2047c478bd9Sstevel@tonic-gate #define	IPPORT_WHOIS		43
205d04ccbb3Scarlsonj #define	IPPORT_DOMAIN		53
2064b22b933Srs #define	IPPORT_MDNS		5353
2077c478bd9Sstevel@tonic-gate #define	IPPORT_MTP		57
2087c478bd9Sstevel@tonic-gate 
2097c478bd9Sstevel@tonic-gate /*
2107c478bd9Sstevel@tonic-gate  * Port/socket numbers: host specific functions
2117c478bd9Sstevel@tonic-gate  */
2127c478bd9Sstevel@tonic-gate #define	IPPORT_BOOTPS		67
2137c478bd9Sstevel@tonic-gate #define	IPPORT_BOOTPC		68
2147c478bd9Sstevel@tonic-gate #define	IPPORT_TFTP		69
2157c478bd9Sstevel@tonic-gate #define	IPPORT_RJE		77
2167c478bd9Sstevel@tonic-gate #define	IPPORT_FINGER		79
217d04ccbb3Scarlsonj #define	IPPORT_HTTP		80
218d04ccbb3Scarlsonj #define	IPPORT_HTTP_ALT		8080
2197c478bd9Sstevel@tonic-gate #define	IPPORT_TTYLINK		87
2207c478bd9Sstevel@tonic-gate #define	IPPORT_SUPDUP		95
221d04ccbb3Scarlsonj #define	IPPORT_NTP		123
222d04ccbb3Scarlsonj #define	IPPORT_NETBIOS_NS	137
223d04ccbb3Scarlsonj #define	IPPORT_NETBIOS_DGM	138
224d04ccbb3Scarlsonj #define	IPPORT_NETBIOS_SSN	139
225d04ccbb3Scarlsonj #define	IPPORT_LDAP		389
226d04ccbb3Scarlsonj #define	IPPORT_SLP		427
227d04ccbb3Scarlsonj #define	IPPORT_MIP		434
2287962806fSGordon Ross #define	IPPORT_SMB		445		/* a.k.a. microsoft-ds */
2297c478bd9Sstevel@tonic-gate 
2307c478bd9Sstevel@tonic-gate /*
2317c478bd9Sstevel@tonic-gate  * Internet Key Exchange (IKE) ports
2327c478bd9Sstevel@tonic-gate  */
2337c478bd9Sstevel@tonic-gate #define	IPPORT_IKE		500
2347c478bd9Sstevel@tonic-gate #define	IPPORT_IKE_NATT		4500
2357c478bd9Sstevel@tonic-gate 
2367c478bd9Sstevel@tonic-gate /*
2377c478bd9Sstevel@tonic-gate  * UNIX TCP sockets
2387c478bd9Sstevel@tonic-gate  */
2397c478bd9Sstevel@tonic-gate #define	IPPORT_EXECSERVER	512
2407c478bd9Sstevel@tonic-gate #define	IPPORT_LOGINSERVER	513
2417c478bd9Sstevel@tonic-gate #define	IPPORT_CMDSERVER	514
242d04ccbb3Scarlsonj #define	IPPORT_PRINTER		515
2437c478bd9Sstevel@tonic-gate #define	IPPORT_EFSSERVER	520
2447c478bd9Sstevel@tonic-gate 
2457c478bd9Sstevel@tonic-gate /*
2467c478bd9Sstevel@tonic-gate  * UNIX UDP sockets
2477c478bd9Sstevel@tonic-gate  */
2487c478bd9Sstevel@tonic-gate #define	IPPORT_BIFFUDP		512
2497c478bd9Sstevel@tonic-gate #define	IPPORT_WHOSERVER	513
250d04ccbb3Scarlsonj #define	IPPORT_SYSLOG		514
251d04ccbb3Scarlsonj #define	IPPORT_TALK		517
252d04ccbb3Scarlsonj #define	IPPORT_ROUTESERVER	520
253d04ccbb3Scarlsonj #define	IPPORT_RIPNG		521
254d04ccbb3Scarlsonj 
255d04ccbb3Scarlsonj /*
256d04ccbb3Scarlsonj  * DHCPv6 UDP ports
257d04ccbb3Scarlsonj  */
258d04ccbb3Scarlsonj #define	IPPORT_DHCPV6C		546
259d04ccbb3Scarlsonj #define	IPPORT_DHCPV6S		547
260d04ccbb3Scarlsonj 
261d04ccbb3Scarlsonj #define	IPPORT_SOCKS		1080
2627c478bd9Sstevel@tonic-gate 
2637c478bd9Sstevel@tonic-gate /*
2647c478bd9Sstevel@tonic-gate  * Ports < IPPORT_RESERVED are reserved for
2657c478bd9Sstevel@tonic-gate  * privileged processes (e.g. root).
2667c478bd9Sstevel@tonic-gate  * Ports > IPPORT_USERRESERVED are reserved
2677c478bd9Sstevel@tonic-gate  * for servers, not necessarily privileged.
2687c478bd9Sstevel@tonic-gate  */
2697c478bd9Sstevel@tonic-gate #define	IPPORT_RESERVED		1024
2707c478bd9Sstevel@tonic-gate #define	IPPORT_USERRESERVED	5000
2717c478bd9Sstevel@tonic-gate 
2727c478bd9Sstevel@tonic-gate /*
2737c478bd9Sstevel@tonic-gate  * Link numbers
2747c478bd9Sstevel@tonic-gate  */
2757c478bd9Sstevel@tonic-gate #define	IMPLINK_IP		155
2767c478bd9Sstevel@tonic-gate #define	IMPLINK_LOWEXPER	156
2777c478bd9Sstevel@tonic-gate #define	IMPLINK_HIGHEXPER	158
2787c478bd9Sstevel@tonic-gate 
2797c478bd9Sstevel@tonic-gate /*
2807c478bd9Sstevel@tonic-gate  * IPv4 Internet address
2817c478bd9Sstevel@tonic-gate  *	This definition contains obsolete fields for compatibility
2827c478bd9Sstevel@tonic-gate  *	with SunOS 3.x and 4.2bsd.  The presence of subnets renders
2837c478bd9Sstevel@tonic-gate  *	divisions into fixed fields misleading at best.  New code
2847c478bd9Sstevel@tonic-gate  *	should use only the s_addr field.
2857c478bd9Sstevel@tonic-gate  */
2867c478bd9Sstevel@tonic-gate 
2877c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
2887c478bd9Sstevel@tonic-gate #define	_S_un_b	S_un_b
2897c478bd9Sstevel@tonic-gate #define	_S_un_w	S_un_w
2907c478bd9Sstevel@tonic-gate #define	_S_addr	S_addr
2917c478bd9Sstevel@tonic-gate #define	_S_un	S_un
2927c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
2937c478bd9Sstevel@tonic-gate 
2947c478bd9Sstevel@tonic-gate struct in_addr {
2957c478bd9Sstevel@tonic-gate 	union {
2967c478bd9Sstevel@tonic-gate 		struct { uint8_t s_b1, s_b2, s_b3, s_b4; } _S_un_b;
2977c478bd9Sstevel@tonic-gate 		struct { uint16_t s_w1, s_w2; } _S_un_w;
2987c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
2997c478bd9Sstevel@tonic-gate 		uint32_t _S_addr;
3007c478bd9Sstevel@tonic-gate #else
3017c478bd9Sstevel@tonic-gate 		in_addr_t _S_addr;
3027c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
3037c478bd9Sstevel@tonic-gate 	} _S_un;
3047c478bd9Sstevel@tonic-gate #define	s_addr	_S_un._S_addr		/* should be used for all code */
3057c478bd9Sstevel@tonic-gate #define	s_host	_S_un._S_un_b.s_b2	/* OBSOLETE: host on imp */
3067c478bd9Sstevel@tonic-gate #define	s_net	_S_un._S_un_b.s_b1	/* OBSOLETE: network */
3077c478bd9Sstevel@tonic-gate #define	s_imp	_S_un._S_un_w.s_w2	/* OBSOLETE: imp */
3087c478bd9Sstevel@tonic-gate #define	s_impno	_S_un._S_un_b.s_b4	/* OBSOLETE: imp # */
3097c478bd9Sstevel@tonic-gate #define	s_lh	_S_un._S_un_b.s_b3	/* OBSOLETE: logical host */
3107c478bd9Sstevel@tonic-gate };
3117c478bd9Sstevel@tonic-gate 
3127c478bd9Sstevel@tonic-gate /*
3137c478bd9Sstevel@tonic-gate  * Definitions of bits in internet address integers.
3147c478bd9Sstevel@tonic-gate  * On subnets, the decomposition of addresses to host and net parts
3157c478bd9Sstevel@tonic-gate  * is done according to subnet mask, not the masks here.
3162a9459bdSsangeeta  *
3172a9459bdSsangeeta  * Note that with the introduction of CIDR, IN_CLASSA, IN_CLASSB,
3182a9459bdSsangeeta  * IN_CLASSC, IN_CLASSD and IN_CLASSE macros have become "de-facto
3192a9459bdSsangeeta  * obsolete". IN_MULTICAST macro should be used to test if a address
3202a9459bdSsangeeta  * is a multicast address.
3217c478bd9Sstevel@tonic-gate  */
3227c478bd9Sstevel@tonic-gate #define	IN_CLASSA(i)		(((i) & 0x80000000U) == 0)
3237c478bd9Sstevel@tonic-gate #define	IN_CLASSA_NET		0xff000000U
3247c478bd9Sstevel@tonic-gate #define	IN_CLASSA_NSHIFT	24
3257c478bd9Sstevel@tonic-gate #define	IN_CLASSA_HOST		0x00ffffffU
3267c478bd9Sstevel@tonic-gate #define	IN_CLASSA_MAX		128
3277c478bd9Sstevel@tonic-gate 
3287c478bd9Sstevel@tonic-gate #define	IN_CLASSB(i)		(((i) & 0xc0000000U) == 0x80000000U)
3297c478bd9Sstevel@tonic-gate #define	IN_CLASSB_NET		0xffff0000U
3307c478bd9Sstevel@tonic-gate #define	IN_CLASSB_NSHIFT	16
3317c478bd9Sstevel@tonic-gate #define	IN_CLASSB_HOST		0x0000ffffU
3327c478bd9Sstevel@tonic-gate #define	IN_CLASSB_MAX		65536
3337c478bd9Sstevel@tonic-gate 
3347c478bd9Sstevel@tonic-gate #define	IN_CLASSC(i)		(((i) & 0xe0000000U) == 0xc0000000U)
3357c478bd9Sstevel@tonic-gate #define	IN_CLASSC_NET		0xffffff00U
3367c478bd9Sstevel@tonic-gate #define	IN_CLASSC_NSHIFT	8
3377c478bd9Sstevel@tonic-gate #define	IN_CLASSC_HOST		0x000000ffU
3387c478bd9Sstevel@tonic-gate 
3397c478bd9Sstevel@tonic-gate #define	IN_CLASSD(i)		(((i) & 0xf0000000U) == 0xe0000000U)
3407c478bd9Sstevel@tonic-gate #define	IN_CLASSD_NET		0xf0000000U	/* These aren't really  */
3417c478bd9Sstevel@tonic-gate #define	IN_CLASSD_NSHIFT	28		/* net and host fields, but */
3427c478bd9Sstevel@tonic-gate #define	IN_CLASSD_HOST		0x0fffffffU	/* routing needn't know */
3432a9459bdSsangeeta 
3442a9459bdSsangeeta #define	IN_CLASSE(i)		(((i) & 0xf0000000U) == 0xf0000000U)
3452a9459bdSsangeeta #define	IN_CLASSE_NET		0xffffffffU
3462a9459bdSsangeeta 
3477c478bd9Sstevel@tonic-gate #define	IN_MULTICAST(i)		IN_CLASSD(i)
3487c478bd9Sstevel@tonic-gate 
3492a9459bdSsangeeta /*
3502a9459bdSsangeeta  * We have removed CLASS E checks from the kernel
3512a9459bdSsangeeta  * But we preserve these defines for userland in order
3522a9459bdSsangeeta  * to avoid compile  breakage of some 3rd party piece of software
3532a9459bdSsangeeta  */
3542a9459bdSsangeeta #ifndef _KERNEL
3557c478bd9Sstevel@tonic-gate #define	IN_EXPERIMENTAL(i)	(((i) & 0xe0000000U) == 0xe0000000U)
3567c478bd9Sstevel@tonic-gate #define	IN_BADCLASS(i)		(((i) & 0xf0000000U) == 0xf0000000U)
3572a9459bdSsangeeta #endif
3587c478bd9Sstevel@tonic-gate 
3597c478bd9Sstevel@tonic-gate #define	INADDR_ANY		0x00000000U
3607c478bd9Sstevel@tonic-gate #define	INADDR_LOOPBACK		0x7F000001U
3617c478bd9Sstevel@tonic-gate #define	INADDR_BROADCAST	0xffffffffU	/* must be masked */
3627c478bd9Sstevel@tonic-gate #define	INADDR_NONE		0xffffffffU
3637c478bd9Sstevel@tonic-gate 
3647c478bd9Sstevel@tonic-gate #define	INADDR_UNSPEC_GROUP	0xe0000000U	/* 224.0.0.0   */
3657c478bd9Sstevel@tonic-gate #define	INADDR_ALLHOSTS_GROUP	0xe0000001U	/* 224.0.0.1   */
3667c478bd9Sstevel@tonic-gate #define	INADDR_ALLRTRS_GROUP	0xe0000002U	/* 224.0.0.2   */
3677c478bd9Sstevel@tonic-gate #define	INADDR_ALLRPTS_GROUP	0xe0000016U	/* 224.0.0.22, IGMPv3 */
3687c478bd9Sstevel@tonic-gate #define	INADDR_MAX_LOCAL_GROUP	0xe00000ffU	/* 224.0.0.255 */
3697c478bd9Sstevel@tonic-gate 
3707c478bd9Sstevel@tonic-gate /* Scoped IPv4 prefixes (in host byte-order) */
3717c478bd9Sstevel@tonic-gate #define	IN_AUTOCONF_NET		0xa9fe0000U	/* 169.254/16 */
3727c478bd9Sstevel@tonic-gate #define	IN_AUTOCONF_MASK	0xffff0000U
3737c478bd9Sstevel@tonic-gate #define	IN_PRIVATE8_NET		0x0a000000U	/* 10/8 */
3747c478bd9Sstevel@tonic-gate #define	IN_PRIVATE8_MASK	0xff000000U
3757c478bd9Sstevel@tonic-gate #define	IN_PRIVATE12_NET	0xac100000U	/* 172.16/12 */
3767c478bd9Sstevel@tonic-gate #define	IN_PRIVATE12_MASK	0xfff00000U
3777c478bd9Sstevel@tonic-gate #define	IN_PRIVATE16_NET	0xc0a80000U	/* 192.168/16 */
3787c478bd9Sstevel@tonic-gate #define	IN_PRIVATE16_MASK	0xffff0000U
3797c478bd9Sstevel@tonic-gate 
380f9aa3e1eSkcpoon /* RFC 3927 IPv4 link local address (i in host byte-order) */
381f9aa3e1eSkcpoon #define	IN_LINKLOCAL(i)		(((i) & IN_AUTOCONF_MASK) == IN_AUTOCONF_NET)
382f9aa3e1eSkcpoon 
3837c478bd9Sstevel@tonic-gate /* Well known 6to4 Relay Router Anycast address defined in RFC 3068 */
3847c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || !defined(__EXTENSIONS__)
385*221e47fbSAndy Fiddaman #define	INADDR_6TO4RRANYCAST	0xc0586301U	/* 192.88.99.1 */
3867c478bd9Sstevel@tonic-gate #endif	/* !defined(_XPG4_2) || !defined(__EXTENSIONS__) */
3877c478bd9Sstevel@tonic-gate 
3887c478bd9Sstevel@tonic-gate #define	IN_LOOPBACKNET		127			/* official! */
3897c478bd9Sstevel@tonic-gate 
3907c478bd9Sstevel@tonic-gate /*
3917c478bd9Sstevel@tonic-gate  * Define a macro to stuff the loopback address into an Internet address
3927c478bd9Sstevel@tonic-gate  */
3937c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || !defined(__EXTENSIONS__)
3947c478bd9Sstevel@tonic-gate #define	IN_SET_LOOPBACK_ADDR(a) \
3957c478bd9Sstevel@tonic-gate 	{ (a)->sin_addr.s_addr  = htonl(INADDR_LOOPBACK); \
3967c478bd9Sstevel@tonic-gate 	(a)->sin_family = AF_INET; }
3977c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || !defined(__EXTENSIONS__) */
3987c478bd9Sstevel@tonic-gate 
3997c478bd9Sstevel@tonic-gate /*
4007c478bd9Sstevel@tonic-gate  * IPv4 Socket address.
4017c478bd9Sstevel@tonic-gate  */
4027c478bd9Sstevel@tonic-gate struct sockaddr_in {
4037c478bd9Sstevel@tonic-gate 	sa_family_t	sin_family;
4047c478bd9Sstevel@tonic-gate 	in_port_t	sin_port;
4057c478bd9Sstevel@tonic-gate 	struct	in_addr sin_addr;
4067c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
4077c478bd9Sstevel@tonic-gate 	char		sin_zero[8];
4087c478bd9Sstevel@tonic-gate #else
4097c478bd9Sstevel@tonic-gate 	unsigned char	sin_zero[8];
4107c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
4117c478bd9Sstevel@tonic-gate };
4127c478bd9Sstevel@tonic-gate 
4137c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
4147c478bd9Sstevel@tonic-gate /*
4157c478bd9Sstevel@tonic-gate  * IPv6 socket address.
4167c478bd9Sstevel@tonic-gate  */
4177c478bd9Sstevel@tonic-gate struct sockaddr_in6 {
4187c478bd9Sstevel@tonic-gate 	sa_family_t	sin6_family;
4197c478bd9Sstevel@tonic-gate 	in_port_t	sin6_port;
4207c478bd9Sstevel@tonic-gate 	uint32_t	sin6_flowinfo;
4217c478bd9Sstevel@tonic-gate 	struct in6_addr	sin6_addr;
4227c478bd9Sstevel@tonic-gate 	uint32_t	sin6_scope_id;  /* Depends on scope of sin6_addr */
4237c478bd9Sstevel@tonic-gate 	uint32_t	__sin6_src_id;	/* Impl. specific - UDP replies */
4247c478bd9Sstevel@tonic-gate };
4257c478bd9Sstevel@tonic-gate 
4267c478bd9Sstevel@tonic-gate /*
4277c478bd9Sstevel@tonic-gate  * Macros for accessing the traffic class and flow label fields from
4287c478bd9Sstevel@tonic-gate  * sin6_flowinfo.
4297c478bd9Sstevel@tonic-gate  * These are designed to be applied to a 32-bit value.
4307c478bd9Sstevel@tonic-gate  */
4317c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
4327c478bd9Sstevel@tonic-gate 
4337c478bd9Sstevel@tonic-gate /* masks */
4347c478bd9Sstevel@tonic-gate #define	IPV6_FLOWINFO_FLOWLABEL			0x000fffffU
4357c478bd9Sstevel@tonic-gate #define	IPV6_FLOWINFO_TCLASS			0x0ff00000U
4367c478bd9Sstevel@tonic-gate 
4377c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
4387c478bd9Sstevel@tonic-gate 
4397c478bd9Sstevel@tonic-gate /* masks */
4407c478bd9Sstevel@tonic-gate #define	IPV6_FLOWINFO_FLOWLABEL			0xffff0f00U
4417c478bd9Sstevel@tonic-gate #define	IPV6_FLOWINFO_TCLASS			0x0000f00fU
4427c478bd9Sstevel@tonic-gate 
4437c478bd9Sstevel@tonic-gate #endif	/* _BIG_ENDIAN */
4447c478bd9Sstevel@tonic-gate 
4457c478bd9Sstevel@tonic-gate /*
4467c478bd9Sstevel@tonic-gate  * Note: Macros IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT are for
4477c478bd9Sstevel@tonic-gate  * use as RHS of Static initializers of "struct in6_addr" (or in6_addr_t)
4487c478bd9Sstevel@tonic-gate  * only. They need to be different for User/Kernel versions because union
4497c478bd9Sstevel@tonic-gate  * component data structure is defined differently (it is identical at
4507c478bd9Sstevel@tonic-gate  * binary representation level).
4517c478bd9Sstevel@tonic-gate  *
4527c478bd9Sstevel@tonic-gate  * const struct in6_addr IN6ADDR_ANY_INIT;
4537c478bd9Sstevel@tonic-gate  * const struct in6_addr IN6ADDR_LOOPBACK_INIT;
4547c478bd9Sstevel@tonic-gate  */
4557c478bd9Sstevel@tonic-gate 
4567c478bd9Sstevel@tonic-gate 
4577c478bd9Sstevel@tonic-gate #ifdef _KERNEL
4587c478bd9Sstevel@tonic-gate #define	IN6ADDR_ANY_INIT		{ 0, 0, 0, 0 }
4597c478bd9Sstevel@tonic-gate 
4607c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
4617c478bd9Sstevel@tonic-gate #define	IN6ADDR_LOOPBACK_INIT		{ 0, 0, 0, 0x00000001U }
4627c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
4637c478bd9Sstevel@tonic-gate #define	IN6ADDR_LOOPBACK_INIT		{ 0, 0, 0, 0x01000000U }
4647c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
4657c478bd9Sstevel@tonic-gate 
4667c478bd9Sstevel@tonic-gate #else
4677c478bd9Sstevel@tonic-gate 
4687c478bd9Sstevel@tonic-gate #define	IN6ADDR_ANY_INIT	    {	0, 0, 0, 0,	\
4697c478bd9Sstevel@tonic-gate 					0, 0, 0, 0,	\
470*221e47fbSAndy Fiddaman 					0, 0, 0, 0,	\
4717c478bd9Sstevel@tonic-gate 					0, 0, 0, 0 }
4727c478bd9Sstevel@tonic-gate 
4737c478bd9Sstevel@tonic-gate #define	IN6ADDR_LOOPBACK_INIT	    {	0, 0, 0, 0,	\
4747c478bd9Sstevel@tonic-gate 					0, 0, 0, 0,	\
4757c478bd9Sstevel@tonic-gate 					0, 0, 0, 0,	\
4767c478bd9Sstevel@tonic-gate 					0, 0, 0, 0x1U }
4777c478bd9Sstevel@tonic-gate #endif /* _KERNEL */
4787c478bd9Sstevel@tonic-gate 
4797c478bd9Sstevel@tonic-gate /*
4807c478bd9Sstevel@tonic-gate  * RFC 2553 specifies the following macros. Their type is defined
4817c478bd9Sstevel@tonic-gate  * as "int" in the RFC but they only have boolean significance
4827c478bd9Sstevel@tonic-gate  * (zero or non-zero). For the purposes of our comment notation,
4837c478bd9Sstevel@tonic-gate  * we assume a hypothetical type "bool" defined as follows to
4847c478bd9Sstevel@tonic-gate  * write the prototypes assumed for macros in our comments better.
4857c478bd9Sstevel@tonic-gate  *
4867c478bd9Sstevel@tonic-gate  * typedef int bool;
4877c478bd9Sstevel@tonic-gate  */
4887c478bd9Sstevel@tonic-gate 
4897c478bd9Sstevel@tonic-gate /*
4907c478bd9Sstevel@tonic-gate  * IN6 macros used to test for special IPv6 addresses
4917c478bd9Sstevel@tonic-gate  * (Mostly from spec)
4927c478bd9Sstevel@tonic-gate  *
4937c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_UNSPECIFIED (const struct in6_addr *);
4947c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_LOOPBACK    (const struct in6_addr *);
4957c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MULTICAST   (const struct in6_addr *);
4967c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_LINKLOCAL   (const struct in6_addr *);
4977c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_SITELOCAL   (const struct in6_addr *);
4987c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_V4MAPPED    (const struct in6_addr *);
4997c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_V4MAPPED_ANY(const struct in6_addr *); -- Not from RFC2553
5007c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_V4COMPAT    (const struct in6_addr *);
5017c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_RESERVED (const struct in6_addr *); -- Not from RFC2553
5027c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_NODELOCAL(const struct in6_addr *);
5037c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_LINKLOCAL(const struct in6_addr *);
5047c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_SITELOCAL(const struct in6_addr *);
5057c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_ORGLOCAL (const struct in6_addr *);
5067c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_MC_GLOBAL   (const struct in6_addr *);
5077c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_6TO4	 (const struct in6_addr *); -- Not from RFC2553
5087c478bd9Sstevel@tonic-gate  * bool  IN6_ARE_6TO4_PREFIX_EQUAL(const struct in6_addr *,
5097c478bd9Sstevel@tonic-gate  *	     const struct in6_addr *);			    -- Not from RFC2553
5107c478bd9Sstevel@tonic-gate  * bool  IN6_IS_ADDR_LINKSCOPE	 (const struct in6addr  *); -- Not from RFC2553
5117c478bd9Sstevel@tonic-gate  */
5127c478bd9Sstevel@tonic-gate 
5137c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_UNSPECIFIED(addr) \
5147c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[3] == 0) && \
5157c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[2] == 0) && \
5167c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5177c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5187c478bd9Sstevel@tonic-gate 
5197c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5207c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_LOOPBACK(addr) \
5217c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[3] == 0x00000001) && \
5227c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[2] == 0) && \
5237c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5247c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5257c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
5267c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_LOOPBACK(addr) \
5277c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[3] == 0x01000000) && \
5287c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[2] == 0) && \
5297c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5307c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5317c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5327c478bd9Sstevel@tonic-gate 
5337c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5347c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MULTICAST(addr) \
5357c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff000000) == 0xff000000)
5367c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
5377c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MULTICAST(addr) \
5387c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x000000ff) == 0x000000ff)
5397c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5407c478bd9Sstevel@tonic-gate 
5417c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5427c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_LINKLOCAL(addr) \
5437c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xffc00000) == 0xfe800000)
5447c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
5457c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_LINKLOCAL(addr) \
5467c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x0000c0ff) == 0x000080fe)
5477c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5487c478bd9Sstevel@tonic-gate 
5497c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5507c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_SITELOCAL(addr) \
5517c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xffc00000) == 0xfec00000)
5527c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
5537c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_SITELOCAL(addr) \
5547c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x0000c0ff) == 0x0000c0fe)
5557c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5567c478bd9Sstevel@tonic-gate 
5577c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5587c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4MAPPED(addr) \
5597c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \
5607c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5617c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5627c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
5637c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4MAPPED(addr) \
5647c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \
5657c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5667c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5677c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5687c478bd9Sstevel@tonic-gate 
5697c478bd9Sstevel@tonic-gate /*
5707c478bd9Sstevel@tonic-gate  * IN6_IS_ADDR_V4MAPPED - A IPv4 mapped INADDR_ANY
5717c478bd9Sstevel@tonic-gate  * Note: This macro is currently NOT defined in RFC2553 specification
5727c478bd9Sstevel@tonic-gate  * and not a standard macro that portable applications should use.
5737c478bd9Sstevel@tonic-gate  */
5747c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5757c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4MAPPED_ANY(addr) \
5767c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[3] == 0) && \
5777c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \
5787c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5797c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5807c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
5817c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4MAPPED_ANY(addr) \
5827c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[3] == 0) && \
5837c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \
5847c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5857c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0))
5867c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
5877c478bd9Sstevel@tonic-gate 
5887c478bd9Sstevel@tonic-gate /* Exclude loopback and unspecified address */
5897c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
5907c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4COMPAT(addr) \
5917c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[2] == 0) && \
5927c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
5937c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0) && \
5947c478bd9Sstevel@tonic-gate 	!((addr)->_S6_un._S6_u32[3] == 0) && \
5957c478bd9Sstevel@tonic-gate 	!((addr)->_S6_un._S6_u32[3] == 0x00000001))
5967c478bd9Sstevel@tonic-gate 
5977c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
5987c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_V4COMPAT(addr) \
5997c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[2] == 0) && \
6007c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[1] == 0) && \
6017c478bd9Sstevel@tonic-gate 	((addr)->_S6_un._S6_u32[0] == 0) && \
6027c478bd9Sstevel@tonic-gate 	!((addr)->_S6_un._S6_u32[3] == 0) && \
6037c478bd9Sstevel@tonic-gate 	!((addr)->_S6_un._S6_u32[3] == 0x01000000))
6047c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6057c478bd9Sstevel@tonic-gate 
6067c478bd9Sstevel@tonic-gate /*
6077c478bd9Sstevel@tonic-gate  * Note:
6087c478bd9Sstevel@tonic-gate  * IN6_IS_ADDR_MC_RESERVED macro is currently NOT defined in RFC2553
6097c478bd9Sstevel@tonic-gate  * specification and not a standard macro that portable applications
6107c478bd9Sstevel@tonic-gate  * should use.
6117c478bd9Sstevel@tonic-gate  */
6127c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6137c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_RESERVED(addr) \
6147c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff000000)
6157c478bd9Sstevel@tonic-gate 
6167c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
6177c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_RESERVED(addr) \
6187c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x000000ff)
6197c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6207c478bd9Sstevel@tonic-gate 
6217c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6227c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_NODELOCAL(addr) \
6237c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff010000)
6247c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
6257c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_NODELOCAL(addr) \
6267c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x000001ff)
6277c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6287c478bd9Sstevel@tonic-gate 
6297c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6307c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_LINKLOCAL(addr) \
6317c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff020000)
6327c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
6337c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_LINKLOCAL(addr) \
6347c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x000002ff)
6357c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6367c478bd9Sstevel@tonic-gate 
6377c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6387c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_SITELOCAL(addr) \
6397c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff050000)
6407c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
6417c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_SITELOCAL(addr) \
6427c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x000005ff)
6437c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6447c478bd9Sstevel@tonic-gate 
6457c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6467c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_ORGLOCAL(addr) \
6477c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff080000)
6487c478bd9Sstevel@tonic-gate #else  /* _BIG_ENDIAN */
6497c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_ORGLOCAL(addr) \
6507c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x000008ff)
6517c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6527c478bd9Sstevel@tonic-gate 
6537c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6547c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_GLOBAL(addr) \
6557c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xff0f0000) == 0xff0e0000)
6567c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
6577c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_MC_GLOBAL(addr) \
6587c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x00000fff) == 0x00000eff)
6597c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6607c478bd9Sstevel@tonic-gate 
661b94bb0f0Sdd /*
662b94bb0f0Sdd  * The IN6_IS_ADDR_MC_SOLICITEDNODE macro is not defined in any standard or
663b94bb0f0Sdd  * RFC, and shouldn't be used by portable applications.  It is used to see
664b94bb0f0Sdd  * if an address is a solicited-node multicast address, which is prefixed
665b94bb0f0Sdd  * with ff02:0:0:0:0:1:ff00::/104.
666b94bb0f0Sdd  */
667b94bb0f0Sdd #ifdef _BIG_ENDIAN
668b94bb0f0Sdd #define	IN6_IS_ADDR_MC_SOLICITEDNODE(addr)			\
669b94bb0f0Sdd 	(((addr)->_S6_un._S6_u32[0] == 0xff020000) &&		\
670b94bb0f0Sdd 	((addr)->_S6_un._S6_u32[1] == 0x00000000) &&		\
671b94bb0f0Sdd 	((addr)->_S6_un._S6_u32[2] == 0x00000001) &&		\
672b94bb0f0Sdd 	(((addr)->_S6_un._S6_u32[3] & 0xff000000) == 0xff000000))
673b94bb0f0Sdd #else
674b94bb0f0Sdd #define	IN6_IS_ADDR_MC_SOLICITEDNODE(addr)			\
675b94bb0f0Sdd 	(((addr)->_S6_un._S6_u32[0] == 0x000002ff) &&		\
676b94bb0f0Sdd 	((addr)->_S6_un._S6_u32[1] == 0x00000000) &&		\
677b94bb0f0Sdd 	((addr)->_S6_un._S6_u32[2] == 0x01000000) &&		\
678b94bb0f0Sdd 	(((addr)->_S6_un._S6_u32[3] & 0x000000ff) == 0x000000ff))
679b94bb0f0Sdd #endif
680b94bb0f0Sdd 
6817c478bd9Sstevel@tonic-gate /*
6827c478bd9Sstevel@tonic-gate  * Macros to a) test for 6to4 IPv6 address, and b) to test if two
6837c478bd9Sstevel@tonic-gate  * 6to4 addresses have the same /48 prefix, and, hence, are from the
6847c478bd9Sstevel@tonic-gate  * same 6to4 site.
6857c478bd9Sstevel@tonic-gate  */
6867c478bd9Sstevel@tonic-gate 
6877c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
6887c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_6TO4(addr) \
6897c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0xffff0000) == 0x20020000)
6907c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
6917c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_6TO4(addr) \
6927c478bd9Sstevel@tonic-gate 	(((addr)->_S6_un._S6_u32[0] & 0x0000ffff) == 0x00000220)
6937c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
6947c478bd9Sstevel@tonic-gate 
6957c478bd9Sstevel@tonic-gate #define	IN6_ARE_6TO4_PREFIX_EQUAL(addr1, addr2) \
6967c478bd9Sstevel@tonic-gate 	(((addr1)->_S6_un._S6_u32[0] == (addr2)->_S6_un._S6_u32[0]) && \
6977c478bd9Sstevel@tonic-gate 	((addr1)->_S6_un._S6_u8[4] == (addr2)->_S6_un._S6_u8[4]) && \
6987c478bd9Sstevel@tonic-gate 	((addr1)->_S6_un._S6_u8[5] == (addr2)->_S6_un._S6_u8[5]))
6997c478bd9Sstevel@tonic-gate 
7007c478bd9Sstevel@tonic-gate /*
7017c478bd9Sstevel@tonic-gate  * IN6_IS_ADDR_LINKSCOPE
7027c478bd9Sstevel@tonic-gate  * Identifies an address as being either link-local, link-local multicast or
7037c478bd9Sstevel@tonic-gate  * node-local multicast.  All types of addresses are considered to be unique
7047c478bd9Sstevel@tonic-gate  * within the scope of a given link.
7057c478bd9Sstevel@tonic-gate  */
7067c478bd9Sstevel@tonic-gate #define	IN6_IS_ADDR_LINKSCOPE(addr) \
7077c478bd9Sstevel@tonic-gate 	(IN6_IS_ADDR_LINKLOCAL(addr) || IN6_IS_ADDR_MC_LINKLOCAL(addr) || \
7087c478bd9Sstevel@tonic-gate 	IN6_IS_ADDR_MC_NODELOCAL(addr))
7097c478bd9Sstevel@tonic-gate 
7107c478bd9Sstevel@tonic-gate /*
7117c478bd9Sstevel@tonic-gate  * Useful utility macros for operations with IPv6 addresses
7127c478bd9Sstevel@tonic-gate  * Note: These macros are NOT defined in the RFC2553 or any other
7137c478bd9Sstevel@tonic-gate  * standard specification and are not standard macros that portable
7147c478bd9Sstevel@tonic-gate  * applications should use.
7157c478bd9Sstevel@tonic-gate  */
7167c478bd9Sstevel@tonic-gate 
7177c478bd9Sstevel@tonic-gate /*
7187c478bd9Sstevel@tonic-gate  * IN6_V4MAPPED_TO_INADDR
7197c478bd9Sstevel@tonic-gate  * IN6_V4MAPPED_TO_IPADDR
7207c478bd9Sstevel@tonic-gate  *	Assign a IPv4-Mapped IPv6 address to an IPv4 address.
7217c478bd9Sstevel@tonic-gate  *	Note: These macros are NOT defined in RFC2553 or any other standard
7227c478bd9Sstevel@tonic-gate  *	specification and are not macros that portable applications should
7237c478bd9Sstevel@tonic-gate  *	use.
7247c478bd9Sstevel@tonic-gate  *
7257c478bd9Sstevel@tonic-gate  * void IN6_V4MAPPED_TO_INADDR(const in6_addr_t *v6, struct in_addr *v4);
7267c478bd9Sstevel@tonic-gate  * void IN6_V4MAPPED_TO_IPADDR(const in6_addr_t *v6, ipaddr_t v4);
7277c478bd9Sstevel@tonic-gate  *
7287c478bd9Sstevel@tonic-gate  */
7297c478bd9Sstevel@tonic-gate #define	IN6_V4MAPPED_TO_INADDR(v6, v4) \
7307c478bd9Sstevel@tonic-gate 	((v4)->s_addr = (v6)->_S6_un._S6_u32[3])
7317c478bd9Sstevel@tonic-gate #define	IN6_V4MAPPED_TO_IPADDR(v6, v4) \
7327c478bd9Sstevel@tonic-gate 	((v4) = (v6)->_S6_un._S6_u32[3])
7337c478bd9Sstevel@tonic-gate 
7347c478bd9Sstevel@tonic-gate /*
7357c478bd9Sstevel@tonic-gate  * IN6_INADDR_TO_V4MAPPED
7367c478bd9Sstevel@tonic-gate  * IN6_IPADDR_TO_V4MAPPED
7377c478bd9Sstevel@tonic-gate  *	Assign a IPv4 address address to an IPv6 address as a IPv4-mapped
7387c478bd9Sstevel@tonic-gate  *	address.
7397c478bd9Sstevel@tonic-gate  *	Note: These macros are NOT defined in RFC2553 or any other standard
7407c478bd9Sstevel@tonic-gate  *	specification and are not macros that portable applications should
7417c478bd9Sstevel@tonic-gate  *	use.
7427c478bd9Sstevel@tonic-gate  *
7437c478bd9Sstevel@tonic-gate  * void IN6_INADDR_TO_V4MAPPED(const struct in_addr *v4, in6_addr_t *v6);
7447c478bd9Sstevel@tonic-gate  * void IN6_IPADDR_TO_V4MAPPED(const ipaddr_t v4, in6_addr_t *v6);
7457c478bd9Sstevel@tonic-gate  *
7467c478bd9Sstevel@tonic-gate  */
7477c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
7487c478bd9Sstevel@tonic-gate #define	IN6_INADDR_TO_V4MAPPED(v4, v6) \
7497c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u32[3] = (v4)->s_addr, \
7507c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0x0000ffff, \
7517c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[1] = 0, \
7527c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[0] = 0)
7537c478bd9Sstevel@tonic-gate #define	IN6_IPADDR_TO_V4MAPPED(v4, v6) \
7547c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u32[3] = (v4), \
7557c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0x0000ffff, \
7567c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[1] = 0, \
7577c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[0] = 0)
7587c478bd9Sstevel@tonic-gate #else /* _BIG_ENDIAN */
7597c478bd9Sstevel@tonic-gate #define	IN6_INADDR_TO_V4MAPPED(v4, v6) \
7607c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u32[3] = (v4)->s_addr, \
7617c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0xffff0000U, \
7627c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[1] = 0, \
7637c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[0] = 0)
7647c478bd9Sstevel@tonic-gate #define	IN6_IPADDR_TO_V4MAPPED(v4, v6) \
7657c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u32[3] = (v4), \
7667c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0xffff0000U, \
7677c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[1] = 0, \
7687c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[0] = 0)
7697c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
7707c478bd9Sstevel@tonic-gate 
7717c478bd9Sstevel@tonic-gate /*
7727c478bd9Sstevel@tonic-gate  * IN6_6TO4_TO_V4ADDR
7737c478bd9Sstevel@tonic-gate  *	Extract the embedded IPv4 address from the prefix to a 6to4 IPv6
7747c478bd9Sstevel@tonic-gate  *      address.
7757c478bd9Sstevel@tonic-gate  *	Note: This macro is NOT defined in RFC2553 or any other standard
7767c478bd9Sstevel@tonic-gate  *	specification and is not a macro that portable applications should
7777c478bd9Sstevel@tonic-gate  *	use.
7787c478bd9Sstevel@tonic-gate  *	Note: we don't use the IPADDR form of the macro because we need
7797c478bd9Sstevel@tonic-gate  *	to do a bytewise copy; the V4ADDR in the 6to4 address is not
7807c478bd9Sstevel@tonic-gate  *	32-bit aligned.
7817c478bd9Sstevel@tonic-gate  *
7827c478bd9Sstevel@tonic-gate  * void IN6_6TO4_TO_V4ADDR(const in6_addr_t *v6, struct in_addr *v4);
7837c478bd9Sstevel@tonic-gate  *
7847c478bd9Sstevel@tonic-gate  */
7857c478bd9Sstevel@tonic-gate #define	IN6_6TO4_TO_V4ADDR(v6, v4) \
7867c478bd9Sstevel@tonic-gate 	((v4)->_S_un._S_un_b.s_b1 = (v6)->_S6_un._S6_u8[2], \
7877c478bd9Sstevel@tonic-gate 	(v4)->_S_un._S_un_b.s_b2 = (v6)->_S6_un._S6_u8[3],  \
7887c478bd9Sstevel@tonic-gate 	(v4)->_S_un._S_un_b.s_b3 = (v6)->_S6_un._S6_u8[4],  \
7897c478bd9Sstevel@tonic-gate 	(v4)->_S_un._S_un_b.s_b4 = (v6)->_S6_un._S6_u8[5])
7907c478bd9Sstevel@tonic-gate 
7917c478bd9Sstevel@tonic-gate /*
7927c478bd9Sstevel@tonic-gate  * IN6_V4ADDR_TO_6TO4
7937c478bd9Sstevel@tonic-gate  *	Given an IPv4 address and an IPv6 address for output, a 6to4 address
7947c478bd9Sstevel@tonic-gate  *	will be created from the IPv4 Address.
7957c478bd9Sstevel@tonic-gate  *	Note:  This method for creating 6to4 addresses is not standardized
7967c478bd9Sstevel@tonic-gate  *	outside of Solaris.  The newly created 6to4 address will be of the form
7977c478bd9Sstevel@tonic-gate  *	2002:<V4ADDR>:<SUBNETID>::<HOSTID>, where SUBNETID will equal 0 and
7987c478bd9Sstevel@tonic-gate  *	HOSTID will equal 1.
7997c478bd9Sstevel@tonic-gate  *
8007c478bd9Sstevel@tonic-gate  * void IN6_V4ADDR_TO_6TO4(const struct in_addr *v4, in6_addr_t *v6)
8017c478bd9Sstevel@tonic-gate  *
8027c478bd9Sstevel@tonic-gate  */
8037c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
8047c478bd9Sstevel@tonic-gate #define	IN6_V4ADDR_TO_6TO4(v4, v6) \
8057c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u8[0] = 0x20, \
8067c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[1] = 0x02, \
8077c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[2] = (v4)->_S_un._S_un_b.s_b1, \
8087c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[3] = (v4)->_S_un._S_un_b.s_b2, \
8097c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[4] = (v4)->_S_un._S_un_b.s_b3, \
8107c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[5] = (v4)->_S_un._S_un_b.s_b4, \
8117c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[6] = 0, \
8127c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[7] = 0, \
8137c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0, \
8147c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[3] = 0x00000001U)
8157c478bd9Sstevel@tonic-gate #else
8167c478bd9Sstevel@tonic-gate #define	IN6_V4ADDR_TO_6TO4(v4, v6) \
8177c478bd9Sstevel@tonic-gate 	((v6)->_S6_un._S6_u8[0] = 0x20, \
8187c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[1] = 0x02, \
8197c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[2] = (v4)->_S_un._S_un_b.s_b1, \
8207c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[3] = (v4)->_S_un._S_un_b.s_b2, \
8217c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[4] = (v4)->_S_un._S_un_b.s_b3, \
8227c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[5] = (v4)->_S_un._S_un_b.s_b4, \
8237c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[6] = 0, \
8247c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u8[7] = 0, \
8257c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[2] = 0, \
8267c478bd9Sstevel@tonic-gate 	(v6)->_S6_un._S6_u32[3] = 0x01000000U)
8277c478bd9Sstevel@tonic-gate #endif /* _BIG_ENDIAN */
8287c478bd9Sstevel@tonic-gate 
8297c478bd9Sstevel@tonic-gate /*
8307c478bd9Sstevel@tonic-gate  * IN6_ARE_ADDR_EQUAL (defined in RFC2292)
8317c478bd9Sstevel@tonic-gate  *	 Compares if IPv6 addresses are equal.
8327c478bd9Sstevel@tonic-gate  * Note: Compares in order of high likelyhood of a miss so we minimize
8337c478bd9Sstevel@tonic-gate  * compares. (Current heuristic order, compare in reverse order of
8347c478bd9Sstevel@tonic-gate  * uint32_t units)
8357c478bd9Sstevel@tonic-gate  *
8367c478bd9Sstevel@tonic-gate  * bool  IN6_ARE_ADDR_EQUAL(const struct in6_addr *,
8377c478bd9Sstevel@tonic-gate  *			    const struct in6_addr *);
8387c478bd9Sstevel@tonic-gate  */
8397c478bd9Sstevel@tonic-gate #define	IN6_ARE_ADDR_EQUAL(addr1, addr2) \
8407c478bd9Sstevel@tonic-gate 	(((addr1)->_S6_un._S6_u32[3] == (addr2)->_S6_un._S6_u32[3]) && \
8417c478bd9Sstevel@tonic-gate 	((addr1)->_S6_un._S6_u32[2] == (addr2)->_S6_un._S6_u32[2]) && \
8427c478bd9Sstevel@tonic-gate 	((addr1)->_S6_un._S6_u32[1] == (addr2)->_S6_un._S6_u32[1]) && \
8437c478bd9Sstevel@tonic-gate 	((addr1)->_S6_un._S6_u32[0] == (addr2)->_S6_un._S6_u32[0]))
8447c478bd9Sstevel@tonic-gate 
8459b241b4eSYuri Pankov /*
8469b241b4eSYuri Pankov  * IN6_ARE_PREFIXEDADDR_EQUAL (not defined in RFCs)
8479b241b4eSYuri Pankov  *	Compares if prefixed parts of IPv6 addresses are equal.
8489b241b4eSYuri Pankov  *
8499b241b4eSYuri Pankov  * uint32_t IN6_MASK_FROM_PREFIX(int, int);
8509b241b4eSYuri Pankov  * bool     IN6_ARE_PREFIXEDADDR_EQUAL(const struct in6_addr *,
8519b241b4eSYuri Pankov  *				       const struct in6_addr *,
8529b241b4eSYuri Pankov  *				       int);
8539b241b4eSYuri Pankov  */
8549b241b4eSYuri Pankov #define	IN6_MASK_FROM_PREFIX(qoctet, prefix) \
8559b241b4eSYuri Pankov 	((((qoctet) + 1) * 32 < (prefix)) ? 0xFFFFFFFFu : \
8569b241b4eSYuri Pankov 	((((qoctet) * 32) >= (prefix)) ? 0x00000000u : \
8579b241b4eSYuri Pankov 	0xFFFFFFFFu << (((qoctet) + 1) * 32 - (prefix))))
8589b241b4eSYuri Pankov 
8599b241b4eSYuri Pankov #define	IN6_ARE_PREFIXEDADDR_EQUAL(addr1, addr2, prefix) \
8609b241b4eSYuri Pankov 	(((ntohl((addr1)->_S6_un._S6_u32[0]) & \
8619b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(0, prefix)) == \
8629b241b4eSYuri Pankov 	(ntohl((addr2)->_S6_un._S6_u32[0]) & \
8639b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(0, prefix))) && \
8649b241b4eSYuri Pankov 	((ntohl((addr1)->_S6_un._S6_u32[1]) & \
8659b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(1, prefix)) == \
8669b241b4eSYuri Pankov 	(ntohl((addr2)->_S6_un._S6_u32[1]) & \
8679b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(1, prefix))) && \
8689b241b4eSYuri Pankov 	((ntohl((addr1)->_S6_un._S6_u32[2]) & \
8699b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(2, prefix)) == \
8709b241b4eSYuri Pankov 	(ntohl((addr2)->_S6_un._S6_u32[2]) & \
8719b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(2, prefix))) && \
8729b241b4eSYuri Pankov 	((ntohl((addr1)->_S6_un._S6_u32[3]) & \
8739b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(3, prefix)) == \
8749b241b4eSYuri Pankov 	(ntohl((addr2)->_S6_un._S6_u32[3]) & \
8759b241b4eSYuri Pankov 	IN6_MASK_FROM_PREFIX(3, prefix))))
8769b241b4eSYuri Pankov 
8777c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
8787c478bd9Sstevel@tonic-gate 
8797c478bd9Sstevel@tonic-gate 
8807c478bd9Sstevel@tonic-gate /*
8817c478bd9Sstevel@tonic-gate  * Options for use with [gs]etsockopt at the IP level.
8827c478bd9Sstevel@tonic-gate  *
8837c478bd9Sstevel@tonic-gate  * Note: Some of the IP_ namespace has conflict with and
8847c478bd9Sstevel@tonic-gate  * and is exposed through <xti.h>. (It also requires exposing
8857c478bd9Sstevel@tonic-gate  * options not implemented). The options with potential
8867c478bd9Sstevel@tonic-gate  * for conflicts use #ifndef guards.
8877c478bd9Sstevel@tonic-gate  */
8887c478bd9Sstevel@tonic-gate #ifndef IP_OPTIONS
8897c478bd9Sstevel@tonic-gate #define	IP_OPTIONS	1	/* set/get IP per-packet options   */
8907c478bd9Sstevel@tonic-gate #endif
8917c478bd9Sstevel@tonic-gate 
8927c478bd9Sstevel@tonic-gate #define	IP_HDRINCL	2	/* int; header is included with data (raw) */
8937c478bd9Sstevel@tonic-gate 
8947c478bd9Sstevel@tonic-gate #ifndef IP_TOS
8957c478bd9Sstevel@tonic-gate #define	IP_TOS		3	/* int; IP type of service and precedence */
8967c478bd9Sstevel@tonic-gate #endif
8977c478bd9Sstevel@tonic-gate 
8987c478bd9Sstevel@tonic-gate #ifndef IP_TTL
8997c478bd9Sstevel@tonic-gate #define	IP_TTL		4	/* int; IP time to live */
9007c478bd9Sstevel@tonic-gate #endif
9017c478bd9Sstevel@tonic-gate 
9027c478bd9Sstevel@tonic-gate #define	IP_RECVOPTS	0x5	/* int; receive all IP options w/datagram */
9037c478bd9Sstevel@tonic-gate #define	IP_RECVRETOPTS	0x6	/* int; receive IP options for response */
9047c478bd9Sstevel@tonic-gate #define	IP_RECVDSTADDR	0x7	/* int; receive IP dst addr w/datagram */
9057c478bd9Sstevel@tonic-gate #define	IP_RETOPTS	0x8	/* ip_opts; set/get IP per-packet options */
9067c478bd9Sstevel@tonic-gate #define	IP_RECVIF	0x9	/* int; receive the inbound interface index */
9077c478bd9Sstevel@tonic-gate #define	IP_RECVSLLA	0xa	/* sockaddr_dl; get source link layer address */
9087c478bd9Sstevel@tonic-gate #define	IP_RECVTTL	0xb	/* uint8_t; get TTL for inbound packet */
909*221e47fbSAndy Fiddaman #define	IP_RECVTOS	0xc	/* uint8_t; get TOS for inbound packet */
9107c478bd9Sstevel@tonic-gate 
9117c478bd9Sstevel@tonic-gate #define	IP_MULTICAST_IF		0x10	/* set/get IP multicast interface  */
9127c478bd9Sstevel@tonic-gate #define	IP_MULTICAST_TTL	0x11	/* set/get IP multicast timetolive */
9137c478bd9Sstevel@tonic-gate #define	IP_MULTICAST_LOOP	0x12	/* set/get IP multicast loopback   */
9147c478bd9Sstevel@tonic-gate #define	IP_ADD_MEMBERSHIP	0x13	/* add	an IP group membership	   */
9157c478bd9Sstevel@tonic-gate #define	IP_DROP_MEMBERSHIP	0x14	/* drop an IP group membership	   */
9167c478bd9Sstevel@tonic-gate #define	IP_BLOCK_SOURCE		0x15	/* block   mcast pkts from source  */
9177c478bd9Sstevel@tonic-gate #define	IP_UNBLOCK_SOURCE	0x16	/* unblock mcast pkts from source  */
9187c478bd9Sstevel@tonic-gate #define	IP_ADD_SOURCE_MEMBERSHIP  0x17	/* add  mcast group/source pair	   */
91943d18f1cSpriyanka #define	IP_DROP_SOURCE_MEMBERSHIP 0x18	/* drop mcast group/source pair	   */
92043d18f1cSpriyanka #define	IP_NEXTHOP		0x19	/* send directly to next hop	   */
92119a30e1aSrshoaib /*
92219a30e1aSrshoaib  * IP_PKTINFO and IP_RECVPKTINFO have same value. Size of argument passed in
92319a30e1aSrshoaib  * is used to differentiate b/w the two.
92419a30e1aSrshoaib  */
92519a30e1aSrshoaib #define	IP_PKTINFO		0x1a	/* specify src address and/or index */
92619a30e1aSrshoaib #define	IP_RECVPKTINFO		0x1a	/* recv dest/matched addr and index */
927bd670b35SErik Nordmark #define	IP_DONTFRAG		0x1b	/* don't fragment packets */
9287c478bd9Sstevel@tonic-gate 
9297c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
9307c478bd9Sstevel@tonic-gate /*
9317c478bd9Sstevel@tonic-gate  * Different preferences that can be requested from IPSEC protocols.
9327c478bd9Sstevel@tonic-gate  */
9337c478bd9Sstevel@tonic-gate #define	IP_SEC_OPT		0x22	/* Used to set IPSEC options */
9347c478bd9Sstevel@tonic-gate #define	IPSEC_PREF_NEVER	0x01
9357c478bd9Sstevel@tonic-gate #define	IPSEC_PREF_REQUIRED	0x02
9367c478bd9Sstevel@tonic-gate #define	IPSEC_PREF_UNIQUE	0x04
9377c478bd9Sstevel@tonic-gate /*
9387c478bd9Sstevel@tonic-gate  * This can be used with the setsockopt() call to set per socket security
9397c478bd9Sstevel@tonic-gate  * options. When the application uses per-socket API, we will reflect
9407c478bd9Sstevel@tonic-gate  * the request on both outbound and inbound packets.
9417c478bd9Sstevel@tonic-gate  */
9427c478bd9Sstevel@tonic-gate 
9437c478bd9Sstevel@tonic-gate typedef struct ipsec_req {
944*221e47fbSAndy Fiddaman 	uint_t		ipsr_ah_req;		/* AH request */
945*221e47fbSAndy Fiddaman 	uint_t		ipsr_esp_req;		/* ESP request */
9467c478bd9Sstevel@tonic-gate 	uint_t		ipsr_self_encap_req;	/* Self-Encap request */
9477c478bd9Sstevel@tonic-gate 	uint8_t		ipsr_auth_alg;		/* Auth algs for AH */
9487c478bd9Sstevel@tonic-gate 	uint8_t		ipsr_esp_alg;		/* Encr algs for ESP */
9497c478bd9Sstevel@tonic-gate 	uint8_t		ipsr_esp_auth_alg;	/* Auth algs for ESP */
9507c478bd9Sstevel@tonic-gate } ipsec_req_t;
9517c478bd9Sstevel@tonic-gate 
9527c478bd9Sstevel@tonic-gate /*
9537c478bd9Sstevel@tonic-gate  * MCAST_* options are protocol-independent.  The actual definitions
9547c478bd9Sstevel@tonic-gate  * are with the v6 options below; this comment is here to note the
9557c478bd9Sstevel@tonic-gate  * namespace usage.
9567c478bd9Sstevel@tonic-gate  *
9577c478bd9Sstevel@tonic-gate  * #define	MCAST_JOIN_GROUP	0x29
9587c478bd9Sstevel@tonic-gate  * #define	MCAST_LEAVE_GROUP	0x2a
9597c478bd9Sstevel@tonic-gate  * #define	MCAST_BLOCK_SOURCE	0x2b
9607c478bd9Sstevel@tonic-gate  * #define	MCAST_UNBLOCK_SOURCE	0x2c
9617c478bd9Sstevel@tonic-gate  * #define	MCAST_JOIN_SOURCE_GROUP	0x2d
9627c478bd9Sstevel@tonic-gate  * #define	MCAST_LEAVE_SOURCE_GROUP 0x2e
9637c478bd9Sstevel@tonic-gate  */
9647c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
9657c478bd9Sstevel@tonic-gate 
9667c478bd9Sstevel@tonic-gate /*
9677c478bd9Sstevel@tonic-gate  * SunOS private (potentially not portable) IP_ option names
9687c478bd9Sstevel@tonic-gate  */
9697c478bd9Sstevel@tonic-gate #define	IP_BOUND_IF		0x41	/* bind socket to an ifindex	   */
970e704a8f2Smeem #define	IP_UNSPEC_SRC		0x42	/* use unspecified source address  */
971a7107231Smeem #define	IP_BROADCAST_TTL	0x43	/* use specific TTL for broadcast  */
972e11c3f44Smeem /* can be reused		0x44 */
973e704a8f2Smeem #define	IP_DHCPINIT_IF		0x45	/* accept all unicast DHCP traffic */
974e704a8f2Smeem 
9757c478bd9Sstevel@tonic-gate /*
9767c478bd9Sstevel@tonic-gate  * Option values and names (when !_XPG5) shared with <xti_inet.h>
9777c478bd9Sstevel@tonic-gate  */
9787c478bd9Sstevel@tonic-gate #ifndef IP_REUSEADDR
9797c478bd9Sstevel@tonic-gate #define	IP_REUSEADDR		0x104
9807c478bd9Sstevel@tonic-gate #endif
9817c478bd9Sstevel@tonic-gate 
9827c478bd9Sstevel@tonic-gate #ifndef IP_DONTROUTE
9837c478bd9Sstevel@tonic-gate #define	IP_DONTROUTE		0x105
9847c478bd9Sstevel@tonic-gate #endif
9857c478bd9Sstevel@tonic-gate 
9867c478bd9Sstevel@tonic-gate #ifndef IP_BROADCAST
9877c478bd9Sstevel@tonic-gate #define	IP_BROADCAST		0x106
9887c478bd9Sstevel@tonic-gate #endif
9897c478bd9Sstevel@tonic-gate 
9907c478bd9Sstevel@tonic-gate /*
9917c478bd9Sstevel@tonic-gate  * The following option values are reserved by <xti_inet.h>
9927c478bd9Sstevel@tonic-gate  *
9937c478bd9Sstevel@tonic-gate  * T_IP_OPTIONS	0x107	 -  IP per-packet options
9947c478bd9Sstevel@tonic-gate  * T_IP_TOS	0x108	 -  IP per packet type of service
9957c478bd9Sstevel@tonic-gate  */
9967c478bd9Sstevel@tonic-gate 
9977c478bd9Sstevel@tonic-gate /*
9987c478bd9Sstevel@tonic-gate  * Default value constants for multicast attributes controlled by
9997c478bd9Sstevel@tonic-gate  * IP*_MULTICAST_LOOP and IP*_MULTICAST_{TTL,HOPS} options.
10007c478bd9Sstevel@tonic-gate  */
10017c478bd9Sstevel@tonic-gate #define	IP_DEFAULT_MULTICAST_TTL  1	/* normally limit m'casts to 1 hop */
10027c478bd9Sstevel@tonic-gate #define	IP_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member */
10037c478bd9Sstevel@tonic-gate 
10047c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
10057c478bd9Sstevel@tonic-gate /*
10067c478bd9Sstevel@tonic-gate  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
10077c478bd9Sstevel@tonic-gate  */
10087c478bd9Sstevel@tonic-gate struct ip_mreq {
10097c478bd9Sstevel@tonic-gate 	struct in_addr	imr_multiaddr;	/* IP multicast address of group */
10107c478bd9Sstevel@tonic-gate 	struct in_addr	imr_interface;	/* local IP address of interface */
10117c478bd9Sstevel@tonic-gate };
10127c478bd9Sstevel@tonic-gate 
10137c478bd9Sstevel@tonic-gate /*
10147c478bd9Sstevel@tonic-gate  * Argument structure for IP_BLOCK_SOURCE, IP_UNBLOCK_SOURCE,
10157c478bd9Sstevel@tonic-gate  * IP_ADD_SOURCE_MEMBERSHIP, and IP_DROP_SOURCE_MEMBERSHIP.
10167c478bd9Sstevel@tonic-gate  */
10177c478bd9Sstevel@tonic-gate struct ip_mreq_source {
10187c478bd9Sstevel@tonic-gate 	struct in_addr	imr_multiaddr;	/* IP address of group */
10197c478bd9Sstevel@tonic-gate 	struct in_addr	imr_sourceaddr;	/* IP address of source */
10207c478bd9Sstevel@tonic-gate 	struct in_addr	imr_interface;	/* IP address of interface */
10217c478bd9Sstevel@tonic-gate };
10227c478bd9Sstevel@tonic-gate 
10237c478bd9Sstevel@tonic-gate /*
10247c478bd9Sstevel@tonic-gate  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP on
10257c478bd9Sstevel@tonic-gate  * IPv6 addresses.
10267c478bd9Sstevel@tonic-gate  */
10277c478bd9Sstevel@tonic-gate struct ipv6_mreq {
10287c478bd9Sstevel@tonic-gate 	struct in6_addr	ipv6mr_multiaddr;	/* IPv6 multicast addr */
10297c478bd9Sstevel@tonic-gate 	unsigned int	ipv6mr_interface;	/* interface index */
10307c478bd9Sstevel@tonic-gate };
10317c478bd9Sstevel@tonic-gate 
10327c478bd9Sstevel@tonic-gate /*
10337c478bd9Sstevel@tonic-gate  * Use #pragma pack() construct to force 32-bit alignment on amd64.
10347c478bd9Sstevel@tonic-gate  * This is needed to keep the structure size and offsets consistent
10357c478bd9Sstevel@tonic-gate  * between a 32-bit app and the 64-bit amd64 kernel in structures
10367c478bd9Sstevel@tonic-gate  * where 64-bit alignment would create gaps (in this case, structures
10377c478bd9Sstevel@tonic-gate  * which have a uint32_t followed by a struct sockaddr_storage).
10387c478bd9Sstevel@tonic-gate  */
10397c478bd9Sstevel@tonic-gate #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
10407c478bd9Sstevel@tonic-gate #pragma pack(4)
10417c478bd9Sstevel@tonic-gate #endif
10427c478bd9Sstevel@tonic-gate 
10437c478bd9Sstevel@tonic-gate /*
10447c478bd9Sstevel@tonic-gate  * Argument structure for MCAST_JOIN_GROUP and MCAST_LEAVE_GROUP.
10457c478bd9Sstevel@tonic-gate  */
10467c478bd9Sstevel@tonic-gate struct group_req {
10477c478bd9Sstevel@tonic-gate 	uint32_t		gr_interface;	/* interface index */
10487c478bd9Sstevel@tonic-gate 	struct sockaddr_storage	gr_group;	/* group address */
10497c478bd9Sstevel@tonic-gate };
10507c478bd9Sstevel@tonic-gate 
10517c478bd9Sstevel@tonic-gate /*
10527c478bd9Sstevel@tonic-gate  * Argument structure for MCAST_BLOCK_SOURCE, MCAST_UNBLOCK_SOURCE,
10537c478bd9Sstevel@tonic-gate  * MCAST_JOIN_SOURCE_GROUP, MCAST_LEAVE_SOURCE_GROUP.
10547c478bd9Sstevel@tonic-gate  */
10557c478bd9Sstevel@tonic-gate struct group_source_req {
10567c478bd9Sstevel@tonic-gate 	uint32_t		gsr_interface;	/* interface index */
10577c478bd9Sstevel@tonic-gate 	struct sockaddr_storage	gsr_group;	/* group address */
10587c478bd9Sstevel@tonic-gate 	struct sockaddr_storage	gsr_source;	/* source address */
10597c478bd9Sstevel@tonic-gate };
10607c478bd9Sstevel@tonic-gate 
10617c478bd9Sstevel@tonic-gate /*
10627c478bd9Sstevel@tonic-gate  * Argument for SIOC[GS]MSFILTER ioctls
10637c478bd9Sstevel@tonic-gate  */
10647c478bd9Sstevel@tonic-gate struct group_filter {
10657c478bd9Sstevel@tonic-gate 	uint32_t		gf_interface;	/* interface index */
10667c478bd9Sstevel@tonic-gate 	struct sockaddr_storage	gf_group;	/* multicast address */
10677c478bd9Sstevel@tonic-gate 	uint32_t		gf_fmode;	/* filter mode */
10687c478bd9Sstevel@tonic-gate 	uint32_t		gf_numsrc;	/* number of sources */
10697c478bd9Sstevel@tonic-gate 	struct sockaddr_storage	gf_slist[1];	/* source address */
10707c478bd9Sstevel@tonic-gate };
10717c478bd9Sstevel@tonic-gate 
10727c478bd9Sstevel@tonic-gate #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
10737c478bd9Sstevel@tonic-gate #pragma pack()
10747c478bd9Sstevel@tonic-gate #endif
10757c478bd9Sstevel@tonic-gate 
10767c478bd9Sstevel@tonic-gate #define	GROUP_FILTER_SIZE(numsrc) \
10777c478bd9Sstevel@tonic-gate 	(sizeof (struct group_filter) - sizeof (struct sockaddr_storage) \
10787c478bd9Sstevel@tonic-gate 	+ (numsrc) * sizeof (struct sockaddr_storage))
10797c478bd9Sstevel@tonic-gate 
10807c478bd9Sstevel@tonic-gate /*
10817c478bd9Sstevel@tonic-gate  * Argument for SIOC[GS]IPMSFILTER ioctls (IPv4-specific)
10827c478bd9Sstevel@tonic-gate  */
10837c478bd9Sstevel@tonic-gate struct ip_msfilter {
10847c478bd9Sstevel@tonic-gate 	struct in_addr	imsf_multiaddr;	/* IP multicast address of group */
10857c478bd9