KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP

for IPv6 yet)

With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project

1 files changed, 602 insertions, 0 deletions

diff --git a/sys/netinet6/icmp6.h b/sys/netinet6/icmp6.h
new file mode 100644
index 0000000..8fd63ff
--- /dev/null
+++ b/sys/netinet6/icmp6.h
@@ -0,0 +1,602 @@
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1993
+ *	The 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.
+ *
+ *	@(#)ip_icmp.h	8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef _NETINET6_ICMPV6_H_
+#define _NETINET6_ICMPV6_H_
+
+#define ICMPV6_PLD_MAXLEN	1232	/* IPV6_MMTU - sizeof(struct ip6_hdr)
+					   - sizeof(struct icmp6_hdr) */
+
+struct icmp6_hdr {
+	u_int8_t	icmp6_type;	/* type field */
+	u_int8_t	icmp6_code;	/* code field */
+	u_int16_t	icmp6_cksum;	/* checksum field */
+	union {
+		u_int32_t	icmp6_un_data32[1]; /* type-specific field */
+		u_int16_t	icmp6_un_data16[2]; /* type-specific field */
+		u_int8_t	icmp6_un_data8[4];  /* type-specific field */
+	} icmp6_dataun;
+};
+
+#define	icmp6_data32	icmp6_dataun.icmp6_un_data32
+#define	icmp6_data16	icmp6_dataun.icmp6_un_data16
+#define	icmp6_data8	icmp6_dataun.icmp6_un_data8
+#define	icmp6_pptr	icmp6_data32[0]		/* parameter prob */
+#define	icmp6_mtu	icmp6_data32[0]		/* packet too big */
+#define	icmp6_id	icmp6_data16[0]		/* echo request/reply */
+#define	icmp6_seq	icmp6_data16[1]		/* echo request/reply */
+#define	icmp6_maxdelay	icmp6_data16[0]		/* mcast group membership */
+
+#define	ICMP6_DST_UNREACH		1	/* dest unreachable, codes: */
+#define	ICMP6_PACKET_TOO_BIG		2	/* packet too big */
+#define	ICMP6_TIME_EXCEEDED		3	/* time exceeded, code: */
+#define	ICMP6_PARAM_PROB		4	/* ip6 header bad */
+
+#define	ICMP6_ECHO_REQUEST		128	/* echo service */
+#define	ICMP6_ECHO_REPLY		129	/* echo reply */
+#define	ICMP6_MEMBERSHIP_QUERY		130	/* group membership query */
+#define	MLD6_LISTENER_QUERY		130 	/* multicast listener query */
+#define	ICMP6_MEMBERSHIP_REPORT		131	/* group membership report */
+#define	MLD6_LISTENER_REPORT		131	/* multicast listener report */
+#define	ICMP6_MEMBERSHIP_REDUCTION	132	/* group membership termination */
+#define	MLD6_LISTENER_DONE		132	/* multicast listener done */
+
+#define	ND_ROUTER_SOLICIT		133	/* router solicitation */
+#define	ND_ROUTER_ADVERT		134	/* router advertisment */
+#define	ND_NEIGHBOR_SOLICIT		135	/* neighbor solicitation */
+#define	ND_NEIGHBOR_ADVERT		136	/* neighbor advertisment */
+#define	ND_REDIRECT			137	/* redirect */
+
+#define	ICMP6_ROUTER_RENUMBERING	138	/* router renumbering */
+
+#define	ICMP6_WRUREQUEST		139	/* who are you request */
+#define	ICMP6_WRUREPLY			140	/* who are you reply */
+#define	ICMP6_FQDN_QUERY		139	/* FQDN query */
+#define	ICMP6_FQDN_REPLY		140	/* FQDN reply */
+#define	ICMP6_NI_QUERY			139	/* node information request */
+#define	ICMP6_NI_REPLY			140	/* node information reply */
+
+/* The definitions below are experimental. TBA */
+#define	MLD6_MTRACE_RESP		141	/* mtrace response(to sender) */
+#define	MLD6_MTRACE			142	/* mtrace messages */
+
+#define	ICMP6_MAXTYPE			142
+
+#define	ICMP6_DST_UNREACH_NOROUTE	0	/* no route to destination */
+#define	ICMP6_DST_UNREACH_ADMIN	 	1	/* administratively prohibited */
+#define	ICMP6_DST_UNREACH_NOTNEIGHBOR	2	/* not a neighbor(obsolete) */
+#define	ICMP6_DST_UNREACH_BEYONDSCOPE	2	/* beyond scope of source address */
+#define	ICMP6_DST_UNREACH_ADDR		3	/* address unreachable */
+#define	ICMP6_DST_UNREACH_NOPORT	4	/* port unreachable */
+
+#define	ICMP6_TIME_EXCEED_TRANSIT 	0	/* ttl==0 in transit */
+#define	ICMP6_TIME_EXCEED_REASSEMBLY	1	/* ttl==0 in reass */
+
+#define	ICMP6_PARAMPROB_HEADER 	 	0	/* erroneous header field */
+#define	ICMP6_PARAMPROB_NEXTHEADER	1	/* unrecognized next header */
+#define	ICMP6_PARAMPROB_OPTION		2	/* unrecognized option */
+
+#define	ICMP6_INFOMSG_MASK		0x80	/* all informational messages */
+
+#define	ICMP6_NI_SUCESS		0	/* node information successful reply */
+#define	ICMP6_NI_REFUSED	1	/* node information request is refused */
+#define	ICMP6_NI_UNKNOWN	2	/* unknown Qtype */
+
+#define	ICMP6_ROUTER_RENUMBERING_COMMAND  0	/* rr command */
+#define	ICMP6_ROUTER_RENUMBERING_RESULT   1	/* rr result */
+#define	ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255	/* rr seq num reset */
+
+/* Used in kernel only */
+#define	ND_REDIRECT_ONLINK	0	/* redirect to an on-link node */
+#define	ND_REDIRECT_ROUTER	1	/* redirect to a better router */
+
+/*
+ * Multicast Listener Discovery
+ */
+struct mld6_hdr {
+	struct	icmp6_hdr	mld6_hdr;
+	struct	in6_addr	mld6_addr; /* multicast address */
+};
+
+#define	mld6_type	mld6_hdr.icmp6_type
+#define	mld6_code	mld6_hdr.icmp6_code
+#define	mld6_cksum	mld6_hdr.icmp6_cksum
+#define	mld6_maxdelay	mld6_hdr.icmp6_data16[0]
+#define	mld6_reserved	mld6_hdr.icmp6_data16[1]
+
+/*
+ * Neighbor Discovery
+ */
+
+struct nd_router_solicit {	/* router solicitation */
+	struct	icmp6_hdr 	nd_rs_hdr;
+	/* could be followed by options */
+};
+
+#define	nd_rs_type	nd_rs_hdr.icmp6_type
+#define	nd_rs_code	nd_rs_hdr.icmp6_code
+#define	nd_rs_cksum	nd_rs_hdr.icmp6_cksum
+#define	nd_rs_reserved	nd_rs_hdr.icmp6_data32[0]
+
+struct nd_router_advert {	/* router advertisement */
+	struct	icmp6_hdr	nd_ra_hdr;
+	u_int32_t	nd_ra_reachable;	/* reachable time */
+	u_int32_t	nd_ra_retransmit;	/* retransmit timer */
+	/* could be followed by options */
+};
+
+#define	nd_ra_type		nd_ra_hdr.icmp6_type
+#define	nd_ra_code		nd_ra_hdr.icmp6_code
+#define	nd_ra_cksum		nd_ra_hdr.icmp6_cksum
+#define	nd_ra_curhoplimit	nd_ra_hdr.icmp6_data8[0]
+#define	nd_ra_flags_reserved	nd_ra_hdr.icmp6_data8[1]
+#define	ND_RA_FLAG_MANAGED	0x80
+#define	ND_RA_FLAG_OTHER	0x40
+#define	nd_ra_router_lifetime	nd_ra_hdr.icmp6_data16[1]
+
+struct nd_neighbor_solicit {	/* neighbor solicitation */
+	struct	icmp6_hdr	nd_ns_hdr;
+	struct	in6_addr	nd_ns_target;	/*target address */
+	/* could be followed by options */
+};
+
+#define	nd_ns_type		nd_ns_hdr.icmp6_type
+#define	nd_ns_code		nd_ns_hdr.icmp6_code
+#define	nd_ns_cksum		nd_ns_hdr.icmp6_cksum
+#define	nd_ns_reserved		nd_ns_hdr.icmp6_data32[0]
+
+struct nd_neighbor_advert {	/* neighbor advertisement */
+	struct	icmp6_hdr	nd_na_hdr;
+	struct	in6_addr	nd_na_target;	/* target address */
+	/* could be followed by options */
+};
+
+#define	nd_na_type		nd_na_hdr.icmp6_type
+#define	nd_na_code		nd_na_hdr.icmp6_code
+#define	nd_na_cksum		nd_na_hdr.icmp6_cksum
+#define	nd_na_flags_reserved	nd_na_hdr.icmp6_data32[0]
+#if BYTE_ORDER == BIG_ENDIAN
+#define	ND_NA_FLAG_ROUTER		0x80000000
+#define	ND_NA_FLAG_SOLICITED		0x40000000
+#define	ND_NA_FLAG_OVERRIDE		0x20000000
+#elif BYTE_ORDER == LITTLE_ENDIAN
+#define	ND_NA_FLAG_ROUTER		0x80
+#define	ND_NA_FLAG_SOLICITED		0x40
+#define	ND_NA_FLAG_OVERRIDE		0x20
+#endif
+
+struct nd_redirect {		/* redirect */
+	struct	icmp6_hdr	nd_rd_hdr;
+	struct	in6_addr	nd_rd_target;	/* target address */
+	struct	in6_addr	nd_rd_dst;	/* destination address */
+	/* could be followed by options */
+};
+
+#define	nd_rd_type		nd_rd_hdr.icmp6_type
+#define	nd_rd_code		nd_rd_hdr.icmp6_code
+#define	nd_rd_cksum		nd_rd_hdr.icmp6_cksum
+#define	nd_rd_reserved		nd_rd_hdr.icmp6_data32[0]
+
+struct nd_opt_hdr {		/* Neighbor discovery option header */
+	u_int8_t	nd_opt_type;
+	u_int8_t	nd_opt_len;
+	/* followed by option specific data*/
+};
+
+#define	ND_OPT_SOURCE_LINKADDR		1
+#define	ND_OPT_TARGET_LINKADDR		2
+#define	ND_OPT_PREFIX_INFORMATION	3
+#define	ND_OPT_REDIRECTED_HEADER	4
+#define	ND_OPT_MTU			5
+
+struct nd_opt_prefix_info {	/* prefix information */
+	u_int8_t	nd_opt_pi_type;
+	u_int8_t	nd_opt_pi_len;
+	u_int8_t	nd_opt_pi_prefix_len;
+	u_int8_t	nd_opt_pi_flags_reserved;
+	u_int32_t	nd_opt_pi_valid_time;
+	u_int32_t	nd_opt_pi_preferred_time;
+	u_int32_t	nd_opt_pi_reserved2;
+	struct	in6_addr	nd_opt_pi_prefix;
+};
+
+#define	ND_OPT_PI_FLAG_ONLINK		0x80
+#define	ND_OPT_PI_FLAG_AUTO		0x40
+
+struct nd_opt_rd_hdr {         /* redirected header */
+	u_int8_t	nd_opt_rh_type;
+	u_int8_t	nd_opt_rh_len;
+	u_int16_t	nd_opt_rh_reserved1;
+	u_int32_t	nd_opt_rh_reserved2;
+	/* followed by IP header and data */
+};
+
+struct nd_opt_mtu {		/* MTU option */
+	u_int8_t	nd_opt_mtu_type;
+	u_int8_t	nd_opt_mtu_len;
+	u_int16_t	nd_opt_mtu_reserved;
+	u_int32_t	nd_opt_mtu_mtu;
+};
+
+/*
+ * icmp6 namelookup
+ */
+
+struct icmp6_namelookup {
+	struct	icmp6_hdr	icmp6_nl_hdr;
+	u_int64_t	icmp6_nl_nonce;
+	u_int32_t	icmp6_nl_ttl;
+	/* could be followed by options */
+};
+
+/*
+ * icmp6 node information
+ */
+struct icmp6_nodeinfo {
+	struct	icmp6_hdr icmp6_ni_hdr;
+	u_int64_t	icmp6_ni_nonce;
+	/* could be followed by reply data */
+};
+
+#define	ni_type		icmp6_ni_hdr.icmp6_type
+#define	ni_code		icmp6_ni_hdr.icmp6_code
+#define	ni_cksum	icmp6_ni_hdr.icmp6_cksum
+#define	ni_qtype	icmp6_ni_hdr.icmp6_data16[0]
+#define	ni_flags	icmp6_ni_hdr.icmp6_data16[1]
+
+
+#define	NI_QTYPE_NOOP		0 /* NOOP  */
+#define	NI_QTYPE_SUPTYPES	1 /* Supported Qtypes */
+#define	NI_QTYPE_FQDN		2 /* FQDN */
+#define	NI_QTYPE_NODEADDR	3 /* Node Addresses. XXX: spec says 2, but it may be a typo... */
+
+#if BYTE_ORDER == BIG_ENDIAN
+#define	NI_SUPTYPE_FLAG_COMPRESS	0x1
+#define	NI_FQDN_FLAG_VALIDTTL		0x1
+#define	NI_NODEADDR_FLAG_LINKLOCAL	0x1
+#define	NI_NODEADDR_FLAG_SITELOCAL	0x2
+#define	NI_NODEADDR_FLAG_GLOBAL		0x4
+#define	NI_NODEADDR_FLAG_ALL		0x8
+#define	NI_NODEADDR_FLAG_TRUNCATE	0x10
+#define	NI_NODEADDR_FLAG_ANYCAST	0x20 /* just experimental. not in spec */
+#elif BYTE_ORDER == LITTLE_ENDIAN
+#define	NI_SUPTYPE_FLAG_COMPRESS	0x0100
+#define	NI_FQDN_FLAG_VALIDTTL		0x0100
+#define	NI_NODEADDR_FLAG_LINKLOCAL	0x0100
+#define	NI_NODEADDR_FLAG_SITELOCAL	0x0200
+#define	NI_NODEADDR_FLAG_GLOBAL		0x0400
+#define	NI_NODEADDR_FLAG_ALL		0x0800
+#define	NI_NODEADDR_FLAG_TRUNCATE	0x1000
+#define	NI_NODEADDR_FLAG_ANYCAST	0x2000 /* just experimental. not in spec */
+#endif
+
+struct ni_reply_fqdn {
+	u_int32_t	ni_fqdn_ttl;	/* TTL */
+	u_int8_t	ni_fqdn_namelen; /* length in octets of the FQDN */
+	u_int8_t	ni_fqdn_name[3]; /* XXX: alignment */
+};
+
+/*
+ * Router Renumbering. as router-renum-08.txt
+ */
+struct icmp6_router_renum {	/* router renumbering header */
+	struct icmp6_hdr	rr_hdr;
+	u_int8_t	rr_segnum;
+	u_int8_t	rr_flags;
+	u_int16_t	rr_maxdelay;
+	u_int32_t	rr_reserved;
+};
+#define	ICMP6_RR_FLAGS_SEGNUM		0x80
+#define	ICMP6_RR_FLAGS_TEST		0x40
+#define	ICMP6_RR_FLAGS_REQRESULT	0x20
+#define	ICMP6_RR_FLAGS_FORCEAPPLY	0x10
+#define	ICMP6_RR_FLAGS_SPECSITE		0x08
+#define	ICMP6_RR_FLAGS_PREVDONE		0x04
+
+#define	rr_type		rr_hdr.icmp6_type
+#define	rr_code		rr_hdr.icmp6_code
+#define	rr_cksum	rr_hdr.icmp6_cksum
+#define	rr_seqnum 	rr_hdr.icmp6_data32[0]
+
+struct rr_pco_match {		/* match prefix part */
+	u_int8_t	rpm_code;
+	u_int8_t	rpm_len;
+	u_int8_t	rpm_ordinal;
+	u_int8_t	rpm_matchlen;
+	u_int8_t	rpm_minlen;
+	u_int8_t	rpm_maxlen;
+	u_int16_t	rpm_reserved;
+	struct	in6_addr	rpm_prefix;
+};
+
+#define	RPM_PCO_ADD		1
+#define	RPM_PCO_CHANGE		2
+#define	RPM_PCO_SETGLOBAL	3
+
+struct rr_pco_use {		/* use prefix part */
+	u_int8_t	rpu_uselen;
+	u_int8_t	rpu_keeplen;
+	u_int8_t	rpu_ramask;
+	u_int8_t	rpu_raflags;
+	u_int32_t	rpu_vltime;
+	u_int32_t	rpu_pltime;
+	u_int32_t	rpu_flags;
+	struct	in6_addr rpu_prefix;
+};
+#define	ICMP6_RR_PCOUSE_RAFLAGS_ONLINK	0x20
+#define	ICMP6_RR_PCOUSE_RAFLAGS_AUTO	0x10
+
+#if BYTE_ORDER == BIG_ENDIAN
+#define	ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
+#define	ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
+#elif BYTE_ORDER == LITTLE_ENDIAN
+#define	ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
+#define	ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
+#endif
+
+struct rr_result {		/* router renumbering result message */
+	u_int16_t	rrr_flags;
+	u_int8_t	rrr_ordinal;
+	u_int8_t	rrr_matchedlen;
+	u_int32_t	rrr_ifid;
+	struct	in6_addr rrr_prefix;
+};
+#if BYTE_ORDER == BIG_ENDIAN
+#define	ICMP6_RR_RESULT_FLAGS_OOB		0x0002
+#define	ICMP6_RR_RESULT_FLAGS_FORBIDDEN		0x0001
+#elif BYTE_ORDER == LITTLE_ENDIAN
+#define	ICMP6_RR_RESULT_FLAGS_OOB		0x02
+#define	ICMP6_RR_RESULT_FLAGS_FORBIDDEN		0x01
+#endif
+
+/*
+ * icmp6 filter structures.
+ */
+
+struct icmp6_filter {
+	u_int32_t	icmp6_filter[8];
+};
+
+#ifdef _KERNEL
+#define	ICMP6_FILTER_SETPASSALL(filterp) \
+    {								\
+	int i; u_char *p;					\
+	p = (u_char *)filterp;					\
+	for (i = 0; i < sizeof(struct icmp6_filter); i++)	\
+		p[i] = 0xff;					\
+    }
+#define	ICMP6_FILTER_SETBLOCKALL(filterp) \
+	bzero(filterp, sizeof(struct icmp6_filter))
+#else /* _KERNEL */
+#define	ICMP6_FILTER_SETPASSALL(filterp) \
+	memset(filterp, 0xff, sizeof(struct icmp6_filter))
+#define	ICMP6_FILTER_SETBLOCKALL(filterp) \
+	memset(filterp, 0x00, sizeof(struct icmp6_filter))
+#endif /* _KERNEL */
+
+#define	ICMP6_FILTER_SETPASS(type, filterp) \
+	(((filterp)->icmp6_filter[(type) >> 5]) |= (1 << ((type) & 31)))
+#define	ICMP6_FILTER_SETBLOCK(type, filterp) \
+	(((filterp)->icmp6_filter[(type) >> 5]) &= ~(1 << ((type) & 31)))
+#define	ICMP6_FILTER_WILLPASS(type, filterp) \
+	((((filterp)->icmp6_filter[(type) >> 5]) & (1 << ((type) & 31))) != 0)
+#define	ICMP6_FILTER_WILLBLOCK(type, filterp) \
+	((((filterp)->icmp6_filter[(type) >> 5]) & (1 << ((type) & 31))) == 0)
+
+/*
+ * Variables related to this implementation
+ * of the internet control message protocol version 6.
+ */
+struct icmp6stat {
+/* statistics related to icmp6 packets generated */
+	u_long	icp6s_error;		/* # of calls to icmp6_error */
+	u_long	icp6s_canterror;	/* no error 'cuz old was icmp */
+	u_long	icp6s_toofreq;		/* no error 'cuz rate limitation */
+	u_long	icp6s_outhist[256];
+/* statistics related to input messages proccesed */
+	u_long	icp6s_badcode;		/* icmp6_code out of range */
+	u_long	icp6s_tooshort;		/* packet < sizeof(struct icmp6_hdr) */
+	u_long	icp6s_checksum;		/* bad checksum */
+	u_long	icp6s_badlen;		/* calculated bound mismatch */
+	u_long	icp6s_reflect;		/* number of responses */
+	u_long	icp6s_inhist[256];	
+};
+
+/*
+ * Names for ICMP sysctl objects
+ */
+#define	ICMPV6CTL_STATS			1
+#define	ICMPV6CTL_REDIRACCEPT		2 /* accept/process redirects */
+#define	ICMPV6CTL_REDIRTIMEOUT		3 /* redirect cache time */
+#define	ICMPV6CTL_ERRRATELIMIT		5 /* ICMPv6 error rate limitation */
+#define	ICMPV6CTL_ND6_PRUNE		6
+#define	ICMPV6CTL_ND6_DELAY		8
+#define	ICMPV6CTL_ND6_UMAXTRIES		9
+#define	ICMPV6CTL_ND6_MMAXTRIES		10
+#define	ICMPV6CTL_ND6_USELOOPBACK	11
+#define	ICMPV6CTL_ND6_PROXYALL		12
+#define	ICMPV6CTL_MAXID			13
+
+#define ICMPV6CTL_NAMES { \
+	{ 0, 0 }, \
+	{ 0, 0 }, \
+	{ "rediraccept", CTLTYPE_INT }, \
+	{ "redirtimeout", CTLTYPE_INT }, \
+	{ 0, 0 }, \
+	{ "errratelimit", CTLTYPE_INT }, \
+	{ "nd6_prune", CTLTYPE_INT }, \
+	{ 0, 0 }, \
+	{ "nd6_delay", CTLTYPE_INT }, \
+	{ "nd6_umaxtries", CTLTYPE_INT }, \
+	{ "nd6_mmaxtries", CTLTYPE_INT }, \
+	{ "nd6_useloopback", CTLTYPE_INT }, \
+	{ "nd6_proxyall", CTLTYPE_INT }, \
+}
+
+#define ICMPV6CTL_VARS { \
+	0, \
+	0, \
+	&icmp6_rediraccept,   \
+	&icmp6_redirtimeout,  \
+	0, \
+	0, \
+	&icmp6errratelim, \
+	&nd6_prune,	\
+	0, \
+	&nd6_delay,	\
+	&nd6_umaxtries, \
+	&nd6_mmaxtries,	\
+	&nd6_useloopback, \
+	&nd6_proxyall, \
+}
+
+#define RTF_PROBEMTU	RTF_PROTO1
+
+#ifdef _KERNEL
+# ifdef __STDC__
+struct	rtentry;
+struct	rttimer;
+struct	in6_multi;
+# endif
+void	icmp6_init __P((void));
+void	icmp6_paramerror __P((struct mbuf *, int));
+void	icmp6_error __P((struct mbuf *, int, int, int));
+int	icmp6_input __P((struct mbuf **, int *, int));
+void	icmp6_fasttimo __P((void));
+void	icmp6_reflect __P((struct mbuf *, size_t));
+void	icmp6_prepare __P((struct mbuf *));
+void	icmp6_redirect_input __P((struct mbuf *, int));
+void	icmp6_redirect_output __P((struct mbuf *, struct rtentry *));
+
+/* XXX: is this the right place for these macros? */
+#define icmp6_ifstat_inc(ifp, tag) \
+do {								\
+	if ((ifp) && (ifp)->if_index <= if_index			\
+	 && (ifp)->if_index < icmp6_ifstatmax			\
+	 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) {	\
+		icmp6_ifstat[(ifp)->if_index]->tag++;		\
+	}							\
+} while (0)
+
+#define icmp6_ifoutstat_inc(ifp, type, code) \
+do { \
+		icmp6_ifstat_inc(ifp, ifs6_out_msg); \
+ 		if (type < ICMP6_INFOMSG_MASK) \
+ 			icmp6_ifstat_inc(ifp, ifs6_out_error); \
+		switch(type) { \
+		 case ICMP6_DST_UNREACH: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
+			 if (code == ICMP6_DST_UNREACH_ADMIN) \
+				 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
+			 break; \
+		 case ICMP6_PACKET_TOO_BIG: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
+			 break; \
+		 case ICMP6_TIME_EXCEEDED: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
+			 break; \
+		 case ICMP6_PARAM_PROB: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
+			 break; \
+		 case ICMP6_ECHO_REQUEST: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
+			 break; \
+		 case ICMP6_ECHO_REPLY: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
+			 break; \
+		 case MLD6_LISTENER_QUERY: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
+			 break; \
+		 case MLD6_LISTENER_REPORT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
+			 break; \
+		 case MLD6_LISTENER_DONE: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
+			 break; \
+		 case ND_ROUTER_SOLICIT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
+			 break; \
+		 case ND_ROUTER_ADVERT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
+			 break; \
+		 case ND_NEIGHBOR_SOLICIT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
+			 break; \
+		 case ND_NEIGHBOR_ADVERT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
+			 break; \
+		 case ND_REDIRECT: \
+			 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
+			 break; \
+		} \
+} while (0)
+
+extern int	icmp6_rediraccept;	/* accept/process redirects */
+extern int	icmp6_redirtimeout;	/* cache time for redirect routes */
+#endif /* _KERNEL */
+
+#endif /* not _NETINET6_ICMPV6_H_ */
+