usr/src/uts/common/inet/ip6.h - illumos-gate - Gitiles

 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License (the "License").
  * You may not use this file except in compliance with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or http://www.opensolaris.org/os/licensing.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */

 #ifndef	_INET_IP6_H
 #define	_INET_IP6_H

 #ifdef	__cplusplus
 extern "C" {
 #endif

 #include <sys/isa_defs.h>

 #ifdef	_KERNEL
 /* icmp6_t is used in the prototype of icmp_inbound_error_fanout_v6() */
 #include <netinet/icmp6.h>
 #endif	/* _KERNEL */

 /* version number for IPv6 - hard to get this one wrong! */
 #define	IPV6_VERSION		6

 #define	IPV6_HDR_LEN		40

 #define	IPV6_ADDR_LEN		16

 /*
  * IPv6 address scopes.  The values of these enums also match the scope
  * field of multicast addresses.
  */
 typedef enum {
 	IP6_SCOPE_INTFLOCAL = 1,	/* Multicast addresses only */
 	IP6_SCOPE_LINKLOCAL,
 	IP6_SCOPE_SUBNETLOCAL,		/* Multicast addresses only */
 	IP6_SCOPE_ADMINLOCAL,		/* Multicast addresses only */
 	IP6_SCOPE_SITELOCAL,
 	IP6_SCOPE_GLOBAL
 } in6addr_scope_t;

 /* From RFC 3542 - setting for IPV6_USE_MIN_MTU socket option */
 #define	IPV6_USE_MIN_MTU_MULTICAST	-1	/* Default */
 #define	IPV6_USE_MIN_MTU_NEVER		0
 #define	IPV6_USE_MIN_MTU_ALWAYS		1

 #ifdef	_KERNEL

 /* Extract the scope from a multicast address */
 #ifdef _BIG_ENDIAN
 #define	IN6_ADDR_MC_SCOPE(addr) \
 	(((addr)->s6_addr32[0] & 0x000f0000) >> 16)
 #else
 #define	IN6_ADDR_MC_SCOPE(addr) \
 	(((addr)->s6_addr32[0] & 0x00000f00) >> 8)
 #endif

 /* Default IPv4 TTL for IPv6-in-IPv4 encapsulated packets */
 #define	IPV6_DEFAULT_HOPS	60	/* XXX What should it be? */

 /* Max IPv6 TTL */
 #define	IPV6_MAX_HOPS	255

 /* Minimum IPv6 MTU from rfc2460 */
 #define	IPV6_MIN_MTU		1280

 /* EUI-64 based token length */
 #define	IPV6_TOKEN_LEN		64

 /* Length of an advertised IPv6 prefix */
 #define	IPV6_PREFIX_LEN		64

 /* Default and maximum tunnel encapsulation limits.  See RFC 2473. */
 #define	IPV6_DEFAULT_ENCAPLIMIT	4
 #define	IPV6_MAX_ENCAPLIMIT	255

 /*
  * Minimum and maximum extension header lengths for IPv6.  The 8-bit
  * length field of each extension header (see rfc2460) specifies the
  * number of 8 octet units of data in the header not including the
  * first 8 octets.  A value of 0 would indicate 8 bytes (0 * 8 + 8),
  * and 255 would indicate 2048 bytes (255 * 8 + 8).
  */
 #define	MIN_EHDR_LEN		8
 #define	MAX_EHDR_LEN		2048

 #ifdef _BIG_ENDIAN
 #define	IPV6_DEFAULT_VERS_AND_FLOW	0x60000000
 #define	IPV6_VERS_AND_FLOW_MASK		0xF0000000
 #define	V6_MCAST			0xFF000000
 #define	V6_LINKLOCAL			0xFE800000

 #define	IPV6_FLOW_TCLASS(x)		(((x) & IPV6_FLOWINFO_TCLASS) >> 20)
 #define	IPV6_TCLASS_FLOW(f, c)		(((f) & ~IPV6_FLOWINFO_TCLASS) |\
 					((c) << 20))
 #else
 #define	IPV6_DEFAULT_VERS_AND_FLOW	0x00000060
 #define	IPV6_VERS_AND_FLOW_MASK		0x000000F0
 #define	V6_MCAST			0x000000FF
 #define	V6_LINKLOCAL			0x000080FE

 #define	IPV6_FLOW_TCLASS(x)		((((x) & 0xf000U) >> 12) |\
 					(((x) & 0xf) << 4))
 #define	IPV6_TCLASS_FLOW(f, c)		(((f) & ~IPV6_FLOWINFO_TCLASS) |\
 					((((c) & 0xf) << 12) |\
 					(((c) & 0xf0) >> 4)))
 #endif

 /*
  * UTILITY MACROS FOR ADDRESSES.
  */

 /*
  * Convert an IPv4 address mask to an IPv6 mask.   Pad with 1-bits.
  */
 #define	V4MASK_TO_V6(v4, v6)	((v6).s6_addr32[0] = 0xffffffffUL,	\
 				(v6).s6_addr32[1] = 0xffffffffUL,	\
 				(v6).s6_addr32[2] = 0xffffffffUL,	\
 				(v6).s6_addr32[3] = (v4))

 /*
  * Convert aligned IPv4-mapped IPv6 address into an IPv4 address.
  * Note: We use "v6" here in definition of macro instead of "(v6)"
  * Not possible to use "(v6)" here since macro is used with struct
  * field names as arguments.
  */
 #define	V4_PART_OF_V6(v6)	v6.s6_addr32[3]

 #ifdef _BIG_ENDIAN
 #define	V6_OR_V4_INADDR_ANY(a)	((a).s6_addr32[3] == 0 &&		\
 				((a).s6_addr32[2] == 0xffffU ||	\
 				(a).s6_addr32[2] == 0) &&		\
 				(a).s6_addr32[1] == 0 &&		\
 				(a).s6_addr32[0] == 0)

 #else
 #define	V6_OR_V4_INADDR_ANY(a)	((a).s6_addr32[3] == 0 && 		\
 				((a).s6_addr32[2] == 0xffff0000U ||	\
 				(a).s6_addr32[2] == 0) &&		\
 				(a).s6_addr32[1] == 0 &&		\
 				(a).s6_addr32[0] == 0)
 #endif /* _BIG_ENDIAN */

 /* IPv4-mapped CLASSD addresses */
 #ifdef _BIG_ENDIAN
 #define	IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
 	(((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \
 	(CLASSD((addr)->_S6_un._S6_u32[3])) && \
 	((addr)->_S6_un._S6_u32[1] == 0) && \
 	((addr)->_S6_un._S6_u32[0] == 0))
 #else  /* _BIG_ENDIAN */
 #define	IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
 	(((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \
 	(CLASSD((addr)->_S6_un._S6_u32[3])) && \
 	((addr)->_S6_un._S6_u32[1] == 0) && \
 	((addr)->_S6_un._S6_u32[0] == 0))
 #endif /* _BIG_ENDIAN */

 /* Clear an IPv6 addr */
 #define	V6_SET_ZERO(a)		((a).s6_addr32[0] = 0,			\
 				(a).s6_addr32[1] = 0,			\
 				(a).s6_addr32[2] = 0,			\
 				(a).s6_addr32[3] = 0)

 /* Mask comparison: is IPv6 addr a, and'ed with mask m, equal to addr b? */
 #define	V6_MASK_EQ(a, m, b)						\
 	((((a).s6_addr32[0] & (m).s6_addr32[0]) == (b).s6_addr32[0]) &&	\
 	(((a).s6_addr32[1] & (m).s6_addr32[1]) == (b).s6_addr32[1]) &&	\
 	(((a).s6_addr32[2] & (m).s6_addr32[2]) == (b).s6_addr32[2]) &&	\
 	(((a).s6_addr32[3] & (m).s6_addr32[3]) == (b).s6_addr32[3]))

 #define	V6_MASK_EQ_2(a, m, b)						\
 	((((a).s6_addr32[0] & (m).s6_addr32[0]) ==			\
 	    ((b).s6_addr32[0]  & (m).s6_addr32[0])) &&			\
 	(((a).s6_addr32[1] & (m).s6_addr32[1]) ==			\
 	    ((b).s6_addr32[1]  & (m).s6_addr32[1])) &&			\
 	(((a).s6_addr32[2] & (m).s6_addr32[2]) ==			\
 	    ((b).s6_addr32[2]  & (m).s6_addr32[2])) &&			\
 	(((a).s6_addr32[3] & (m).s6_addr32[3]) ==			\
 	    ((b).s6_addr32[3]  & (m).s6_addr32[3])))

 /* Copy IPv6 address (s), logically and'ed with mask (m), into (d) */
 #define	V6_MASK_COPY(s, m, d)						\
 	((d).s6_addr32[0] = (s).s6_addr32[0] & (m).s6_addr32[0],	\
 	(d).s6_addr32[1] = (s).s6_addr32[1] & (m).s6_addr32[1],		\
 	(d).s6_addr32[2] = (s).s6_addr32[2] & (m).s6_addr32[2],		\
 	(d).s6_addr32[3] = (s).s6_addr32[3] & (m).s6_addr32[3])

 #define	ILL_FRAG_HASH_V6(v6addr, i)					\
 	((ntohl((v6addr).s6_addr32[3]) ^ (i ^ (i >> 8))) % 		\
 						ILL_FRAG_HASH_TBL_COUNT)


 /*
  * GLOBAL EXTERNALS
  */
 extern const in6_addr_t	ipv6_all_ones;
 extern const in6_addr_t	ipv6_all_zeros;
 extern const in6_addr_t	ipv6_loopback;
 extern const in6_addr_t	ipv6_all_hosts_mcast;
 extern const in6_addr_t	ipv6_all_rtrs_mcast;
 extern const in6_addr_t	ipv6_all_v2rtrs_mcast;
 extern const in6_addr_t	ipv6_solicited_node_mcast;
 extern const in6_addr_t	ipv6_unspecified_group;

 /*
  * FUNCTION PROTOTYPES
  */

 extern void	convert2ascii(char *buf, const in6_addr_t *addr);
 extern char	*inet_ntop(int, const void *, char *, int);
 extern int	inet_pton(int, char *, void *);
 extern void	icmp_param_problem_nexthdr_v6(mblk_t *, boolean_t,
     ip_recv_attr_t *);
 extern void	icmp_pkt2big_v6(mblk_t *, uint32_t, boolean_t,
     ip_recv_attr_t *);
 extern void	icmp_time_exceeded_v6(mblk_t *, uint8_t, boolean_t,
     ip_recv_attr_t *);
 extern void	icmp_unreachable_v6(mblk_t *, uint8_t, boolean_t,
     ip_recv_attr_t *);
 extern mblk_t	*icmp_inbound_v6(mblk_t *, ip_recv_attr_t *);
 extern void	icmp_inbound_error_fanout_v6(mblk_t *, icmp6_t *,
     ip_recv_attr_t *);
 extern void	icmp_update_out_mib_v6(ill_t *, icmp6_t *);

 extern boolean_t conn_wantpacket_v6(conn_t *, ip_recv_attr_t *, ip6_t *);

 extern in6addr_scope_t	ip_addr_scope_v6(const in6_addr_t *);
 extern void	ip_build_hdrs_v6(uchar_t *, uint_t, const ip_pkt_t *, uint8_t,
     uint32_t);
 extern void	ip_fanout_udp_multi_v6(mblk_t *, ip6_t *, uint16_t, uint16_t,
     ip_recv_attr_t *);
 extern void	ip_fanout_send_icmp_v6(mblk_t *, uint_t, uint8_t,
     ip_recv_attr_t *);
 extern void	ip_fanout_proto_v6(mblk_t *, ip6_t *, ip_recv_attr_t *);
 extern int	ip_find_hdr_v6(mblk_t *, ip6_t *, boolean_t, ip_pkt_t *,
     uint8_t *);
 extern in6_addr_t ip_get_dst_v6(ip6_t *, const mblk_t *, boolean_t *);
 extern ip6_rthdr_t	*ip_find_rthdr_v6(ip6_t *, uint8_t *);
 extern boolean_t	ip_hdr_length_nexthdr_v6(mblk_t *, ip6_t *,
     uint16_t *, uint8_t **);
 extern int	ip_hdr_length_v6(mblk_t *, ip6_t *);
 extern uint32_t	ip_massage_options_v6(ip6_t *, ip6_rthdr_t *, netstack_t *);
 extern void	ip_forward_xmit_v6(nce_t *, mblk_t *, ip6_t *, ip_recv_attr_t *,
     uint32_t, uint32_t);
 extern mblk_t	*ip_fraghdr_add_v6(mblk_t *, uint32_t, ip_xmit_attr_t *);
 extern int	ip_fragment_v6(mblk_t *, nce_t *, iaflags_t, uint_t, uint32_t,
     uint32_t, zoneid_t, zoneid_t, pfirepostfrag_t postfragfn,
     uintptr_t *ixa_cookie);
 extern int	ip_process_options_v6(mblk_t *, ip6_t *,
     uint8_t *, uint_t, uint8_t, ip_recv_attr_t *);
 extern void	ip_process_rthdr(mblk_t *, ip6_t *, ip6_rthdr_t *,
     ip_recv_attr_t *);
 extern int	ip_total_hdrs_len_v6(const ip_pkt_t *);
 extern mblk_t	*ipsec_early_ah_v6(mblk_t *, ip_recv_attr_t *);
 extern int	ipsec_ah_get_hdr_size_v6(mblk_t *, boolean_t);
 extern void	ip_send_potential_redirect_v6(mblk_t *, ip6_t *, ire_t *,
     ip_recv_attr_t *);
 extern void	ip_rput_v6(queue_t *, mblk_t *);
 extern mblk_t	*mld_input(mblk_t *, ip_recv_attr_t *);
 extern void	mld_joingroup(ilm_t *);
 extern void	mld_leavegroup(ilm_t *);
 extern void	mld_timeout_handler(void *);

 extern void	pr_addr_dbg(char *, int, const void *);
 extern void	*ip6_kstat_init(netstackid_t, ip6_stat_t *);
 extern void	ip6_kstat_fini(netstackid_t, kstat_t *);
 extern size_t	ip6_get_src_preferences(ip_xmit_attr_t *, uint32_t *);
 extern int	ip6_set_src_preferences(ip_xmit_attr_t *, uint32_t);

 #endif	/* _KERNEL */

 #ifdef	__cplusplus
 }
 #endif

 #endif	/* _INET_IP6_H */
	/*
	* CDDL HEADER START
	*
	* The contents of this file are subject to the terms of the
	* Common Development and Distribution License (the "License").
	* You may not use this file except in compliance with the License.
	*
	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	* or http://www.opensolaris.org/os/licensing.
	* See the License for the specific language governing permissions
	* and limitations under the License.
	*
	* When distributing Covered Code, include this CDDL HEADER in each
	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	* If applicable, add the following below this CDDL HEADER, with the
	* fields enclosed by brackets "[]" replaced with your own identifying
	* information: Portions Copyright [yyyy] [name of copyright owner]
	*
	* CDDL HEADER END
	*/
	/*
	* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
	* Use is subject to license terms.
	*/

	#ifndef _INET_IP6_H
	#define _INET_IP6_H

	#ifdef __cplusplus
	extern "C" {
	#endif

	#include <sys/isa_defs.h>

	#ifdef _KERNEL
	/* icmp6_t is used in the prototype of icmp_inbound_error_fanout_v6() */
	#include <netinet/icmp6.h>
	#endif /* _KERNEL */

	/* version number for IPv6 - hard to get this one wrong! */
	#define IPV6_VERSION 6

	#define IPV6_HDR_LEN 40

	#define IPV6_ADDR_LEN 16

	/*
	* IPv6 address scopes. The values of these enums also match the scope
	* field of multicast addresses.
	*/
	typedef enum {
	IP6_SCOPE_INTFLOCAL = 1, /* Multicast addresses only */
	IP6_SCOPE_LINKLOCAL,
	IP6_SCOPE_SUBNETLOCAL, /* Multicast addresses only */
	IP6_SCOPE_ADMINLOCAL, /* Multicast addresses only */
	IP6_SCOPE_SITELOCAL,
	IP6_SCOPE_GLOBAL
	} in6addr_scope_t;

	/* From RFC 3542 - setting for IPV6_USE_MIN_MTU socket option */
	#define IPV6_USE_MIN_MTU_MULTICAST -1 /* Default */
	#define IPV6_USE_MIN_MTU_NEVER 0
	#define IPV6_USE_MIN_MTU_ALWAYS 1

	#ifdef _KERNEL

	/* Extract the scope from a multicast address */
	#ifdef _BIG_ENDIAN
	#define IN6_ADDR_MC_SCOPE(addr) \
	(((addr)->s6_addr32[0] & 0x000f0000) >> 16)
	#else
	#define IN6_ADDR_MC_SCOPE(addr) \
	(((addr)->s6_addr32[0] & 0x00000f00) >> 8)
	#endif

	/* Default IPv4 TTL for IPv6-in-IPv4 encapsulated packets */
	#define IPV6_DEFAULT_HOPS 60 /* XXX What should it be? */

	/* Max IPv6 TTL */
	#define IPV6_MAX_HOPS 255

	/* Minimum IPv6 MTU from rfc2460 */
	#define IPV6_MIN_MTU 1280

	/* EUI-64 based token length */
	#define IPV6_TOKEN_LEN 64

	/* Length of an advertised IPv6 prefix */
	#define IPV6_PREFIX_LEN 64

	/* Default and maximum tunnel encapsulation limits. See RFC 2473. */
	#define IPV6_DEFAULT_ENCAPLIMIT 4
	#define IPV6_MAX_ENCAPLIMIT 255

	/*
	* Minimum and maximum extension header lengths for IPv6. The 8-bit
	* length field of each extension header (see rfc2460) specifies the
	* number of 8 octet units of data in the header not including the
	* first 8 octets. A value of 0 would indicate 8 bytes (0 * 8 + 8),
	* and 255 would indicate 2048 bytes (255 * 8 + 8).
	*/
	#define MIN_EHDR_LEN 8
	#define MAX_EHDR_LEN 2048

	#ifdef _BIG_ENDIAN
	#define IPV6_DEFAULT_VERS_AND_FLOW 0x60000000
	#define IPV6_VERS_AND_FLOW_MASK 0xF0000000
	#define V6_MCAST 0xFF000000
	#define V6_LINKLOCAL 0xFE800000

	#define IPV6_FLOW_TCLASS(x) (((x) & IPV6_FLOWINFO_TCLASS) >> 20)
	#define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) \|\
	((c) << 20))
	#else
	#define IPV6_DEFAULT_VERS_AND_FLOW 0x00000060
	#define IPV6_VERS_AND_FLOW_MASK 0x000000F0
	#define V6_MCAST 0x000000FF
	#define V6_LINKLOCAL 0x000080FE

	#define IPV6_FLOW_TCLASS(x) ((((x) & 0xf000U) >> 12) \|\
	(((x) & 0xf) << 4))
	#define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) \|\
	((((c) & 0xf) << 12) \|\
	(((c) & 0xf0) >> 4)))
	#endif

	/*
	* UTILITY MACROS FOR ADDRESSES.
	*/

	/*
	* Convert an IPv4 address mask to an IPv6 mask. Pad with 1-bits.
	*/
	#define V4MASK_TO_V6(v4, v6) ((v6).s6_addr32[0] = 0xffffffffUL, \
	(v6).s6_addr32[1] = 0xffffffffUL, \
	(v6).s6_addr32[2] = 0xffffffffUL, \
	(v6).s6_addr32[3] = (v4))

	/*
	* Convert aligned IPv4-mapped IPv6 address into an IPv4 address.
	* Note: We use "v6" here in definition of macro instead of "(v6)"
	* Not possible to use "(v6)" here since macro is used with struct
	* field names as arguments.
	*/
	#define V4_PART_OF_V6(v6) v6.s6_addr32[3]

	#ifdef _BIG_ENDIAN
	#define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \
	((a).s6_addr32[2] == 0xffffU \|\| \
	(a).s6_addr32[2] == 0) && \
	(a).s6_addr32[1] == 0 && \
	(a).s6_addr32[0] == 0)

	#else
	#define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \
	((a).s6_addr32[2] == 0xffff0000U \|\| \
	(a).s6_addr32[2] == 0) && \
	(a).s6_addr32[1] == 0 && \
	(a).s6_addr32[0] == 0)
	#endif /* _BIG_ENDIAN */

	/* IPv4-mapped CLASSD addresses */
	#ifdef _BIG_ENDIAN
	#define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
	(((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \
	(CLASSD((addr)->_S6_un._S6_u32[3])) && \
	((addr)->_S6_un._S6_u32[1] == 0) && \
	((addr)->_S6_un._S6_u32[0] == 0))
	#else /* _BIG_ENDIAN */
	#define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
	(((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \
	(CLASSD((addr)->_S6_un._S6_u32[3])) && \
	((addr)->_S6_un._S6_u32[1] == 0) && \
	((addr)->_S6_un._S6_u32[0] == 0))
	#endif /* _BIG_ENDIAN */

	/* Clear an IPv6 addr */
	#define V6_SET_ZERO(a) ((a).s6_addr32[0] = 0, \
	(a).s6_addr32[1] = 0, \
	(a).s6_addr32[2] = 0, \
	(a).s6_addr32[3] = 0)

	/* Mask comparison: is IPv6 addr a, and'ed with mask m, equal to addr b? */
	#define V6_MASK_EQ(a, m, b) \
	((((a).s6_addr32[0] & (m).s6_addr32[0]) == (b).s6_addr32[0]) && \
	(((a).s6_addr32[1] & (m).s6_addr32[1]) == (b).s6_addr32[1]) && \
	(((a).s6_addr32[2] & (m).s6_addr32[2]) == (b).s6_addr32[2]) && \
	(((a).s6_addr32[3] & (m).s6_addr32[3]) == (b).s6_addr32[3]))

	#define V6_MASK_EQ_2(a, m, b) \
	((((a).s6_addr32[0] & (m).s6_addr32[0]) == \
	((b).s6_addr32[0] & (m).s6_addr32[0])) && \
	(((a).s6_addr32[1] & (m).s6_addr32[1]) == \
	((b).s6_addr32[1] & (m).s6_addr32[1])) && \
	(((a).s6_addr32[2] & (m).s6_addr32[2]) == \
	((b).s6_addr32[2] & (m).s6_addr32[2])) && \
	(((a).s6_addr32[3] & (m).s6_addr32[3]) == \
	((b).s6_addr32[3] & (m).s6_addr32[3])))

	/* Copy IPv6 address (s), logically and'ed with mask (m), into (d) */
	#define V6_MASK_COPY(s, m, d) \
	((d).s6_addr32[0] = (s).s6_addr32[0] & (m).s6_addr32[0], \
	(d).s6_addr32[1] = (s).s6_addr32[1] & (m).s6_addr32[1], \
	(d).s6_addr32[2] = (s).s6_addr32[2] & (m).s6_addr32[2], \
	(d).s6_addr32[3] = (s).s6_addr32[3] & (m).s6_addr32[3])

	#define ILL_FRAG_HASH_V6(v6addr, i) \
	((ntohl((v6addr).s6_addr32[3]) ^ (i ^ (i >> 8))) % \
	ILL_FRAG_HASH_TBL_COUNT)


	/*
	* GLOBAL EXTERNALS
	*/
	extern const in6_addr_t ipv6_all_ones;
	extern const in6_addr_t ipv6_all_zeros;
	extern const in6_addr_t ipv6_loopback;
	extern const in6_addr_t ipv6_all_hosts_mcast;
	extern const in6_addr_t ipv6_all_rtrs_mcast;
	extern const in6_addr_t ipv6_all_v2rtrs_mcast;
	extern const in6_addr_t ipv6_solicited_node_mcast;
	extern const in6_addr_t ipv6_unspecified_group;

	/*
	* FUNCTION PROTOTYPES
	*/

	extern void convert2ascii(char buf, const in6_addr_t addr);
	extern char inet_ntop(int, const void , char *, int);
	extern int inet_pton(int, char , void );
	extern void icmp_param_problem_nexthdr_v6(mblk_t *, boolean_t,
	ip_recv_attr_t *);
	extern void icmp_pkt2big_v6(mblk_t *, uint32_t, boolean_t,
	ip_recv_attr_t *);
	extern void icmp_time_exceeded_v6(mblk_t *, uint8_t, boolean_t,
	ip_recv_attr_t *);
	extern void icmp_unreachable_v6(mblk_t *, uint8_t, boolean_t,
	ip_recv_attr_t *);
	extern mblk_t icmp_inbound_v6(mblk_t , ip_recv_attr_t *);
	extern void icmp_inbound_error_fanout_v6(mblk_t , icmp6_t ,
	ip_recv_attr_t *);
	extern void icmp_update_out_mib_v6(ill_t , icmp6_t );

	extern boolean_t conn_wantpacket_v6(conn_t , ip_recv_attr_t , ip6_t *);

	extern in6addr_scope_t ip_addr_scope_v6(const in6_addr_t *);
	extern void ip_build_hdrs_v6(uchar_t , uint_t, const ip_pkt_t , uint8_t,
	uint32_t);
	extern void ip_fanout_udp_multi_v6(mblk_t , ip6_t , uint16_t, uint16_t,
	ip_recv_attr_t *);
	extern void ip_fanout_send_icmp_v6(mblk_t *, uint_t, uint8_t,
	ip_recv_attr_t *);
	extern void ip_fanout_proto_v6(mblk_t , ip6_t , ip_recv_attr_t *);
	extern int ip_find_hdr_v6(mblk_t , ip6_t , boolean_t, ip_pkt_t *,
	uint8_t *);
	extern in6_addr_t ip_get_dst_v6(ip6_t , const mblk_t , boolean_t *);
	extern ip6_rthdr_t ip_find_rthdr_v6(ip6_t , uint8_t *);
	extern boolean_t ip_hdr_length_nexthdr_v6(mblk_t , ip6_t ,
	uint16_t , uint8_t *);
	extern int ip_hdr_length_v6(mblk_t , ip6_t );
	extern uint32_t ip_massage_options_v6(ip6_t , ip6_rthdr_t , netstack_t *);
	extern void ip_forward_xmit_v6(nce_t , mblk_t , ip6_t , ip_recv_attr_t ,
	uint32_t, uint32_t);
	extern mblk_t ip_fraghdr_add_v6(mblk_t , uint32_t, ip_xmit_attr_t *);
	extern int ip_fragment_v6(mblk_t , nce_t , iaflags_t, uint_t, uint32_t,
	uint32_t, zoneid_t, zoneid_t, pfirepostfrag_t postfragfn,
	uintptr_t *ixa_cookie);
	extern int ip_process_options_v6(mblk_t , ip6_t ,
	uint8_t , uint_t, uint8_t, ip_recv_attr_t );
	extern void ip_process_rthdr(mblk_t , ip6_t , ip6_rthdr_t *,
	ip_recv_attr_t *);
	extern int ip_total_hdrs_len_v6(const ip_pkt_t *);
	extern mblk_t ipsec_early_ah_v6(mblk_t , ip_recv_attr_t *);
	extern int ipsec_ah_get_hdr_size_v6(mblk_t *, boolean_t);
	extern void ip_send_potential_redirect_v6(mblk_t , ip6_t , ire_t *,
	ip_recv_attr_t *);
	extern void ip_rput_v6(queue_t , mblk_t );
	extern mblk_t mld_input(mblk_t , ip_recv_attr_t *);
	extern void mld_joingroup(ilm_t *);
	extern void mld_leavegroup(ilm_t *);
	extern void mld_timeout_handler(void *);

	extern void pr_addr_dbg(char , int, const void );
	extern void ip6_kstat_init(netstackid_t, ip6_stat_t );
	extern void ip6_kstat_fini(netstackid_t, kstat_t *);
	extern size_t ip6_get_src_preferences(ip_xmit_attr_t , uint32_t );
	extern int ip6_set_src_preferences(ip_xmit_attr_t *, uint32_t);

	#endif /* _KERNEL */

	#ifdef __cplusplus
	}
	#endif

	#endif /* _INET_IP6_H */