/* Copyright (C) 1991-1997,2000,2006,2009 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _NETINET_ICMP6_H
#define _NETINET_ICMP6_H 1

#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>

#define ICMP6_FILTER 18

#define ICMP6_FILTER_BLOCK		1
#define ICMP6_FILTER_PASS		2
#define ICMP6_FILTER_BLOCKOTHERS	3
#define ICMP6_FILTER_PASSONLY		4

#define ICMPV6_PLD_MAXLEN	1232	/* IPV6_MMTU - sizeof(struct ip6_hdr)
					   - sizeof(struct icmp6_hdr) */

struct icmp6_filter
  {
    uint32_t icmp6_filt[8];
  } __attribute__ ((__packed__));

struct icmp6_hdr
  {
    uint8_t     icmp6_type;   /* type field */
    uint8_t     icmp6_code;   /* code field */
    uint16_t    icmp6_cksum;  /* checksum field */
    union
      {
	uint32_t  icmp6_un_data32[1]; /* type-specific field */
	uint16_t  icmp6_un_data16[2]; /* type-specific field */
	uint8_t   icmp6_un_data8[4];  /* type-specific field */
      } icmp6_dataun;
  } __attribute__ ((__packed__));

#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
#define ICMP6_PACKET_TOO_BIG          2
#define ICMP6_TIME_EXCEEDED           3
#define ICMP6_PARAM_PROB              4

#define ICMP6_INFOMSG_MASK  0x80    /* all informational messages */

#define ICMP6_NI_SUBJ_IPV6            0 /* Query Subject is an IPv6 address */
#define ICMP6_NI_SUBJ_FQDN            1 /* Query Subject is a Domain name */
#define ICMP6_NI_SUBJ_IPV4            2 /* Query Subject is an IPv4 address */

#define ICMP6_NI_SUCCESS              0 /* node information successful reply */
#define ICMP6_NI_REFUSED              1 /* node information request is refused */
#define ICMP6_NI_UNKNOWN              2 /* unknown Qtype */

#define ICMP6_ECHO_REQUEST          128
#define ICMP6_ECHO_REPLY            129
#define MLD_LISTENER_QUERY          130
#define MLD_LISTENER_REPORT         131
#define MLD_LISTENER_DONE           132
#define MLD_LISTENER_REDUCTION      MLD_LISTENER_DONE

/* RFC2292 decls */
#define ICMP6_MEMBERSHIP_QUERY      130 /* group membership query */
#define ICMP6_MEMBERSHIP_REPORT     131 /* group membership report */
#define ICMP6_MEMBERSHIP_REDUCTION  132 /* group membership termination */
/* the followings are for backward compatibility to old KAME apps. */
#define MLD6_LISTENER_QUERY         MLD_LISTENER_QUERY
#define MLD6_LISTENER_REPORT        MLD_LISTENER_REPORT
#define MLD6_LISTENER_DONE          MLD_LISTENER_DONE


#define ICMP6_DST_UNREACH_NOROUTE     0 /* no route to destination */
#define ICMP6_DST_UNREACH_ADMIN       1 /* communication with destination */
                                        /* administratively prohibited */
#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 /* bad port */

#define ICMP6_TIME_EXCEED_TRANSIT     0 /* Hop Limit == 0 in transit */
#define ICMP6_TIME_EXCEED_REASSEMBLY  1 /* Reassembly time out */

#define ICMP6_PARAMPROB_HEADER        0 /* erroneous header field */
#define ICMP6_PARAMPROB_NEXTHEADER    1 /* unrecognized Next Header */
#define ICMP6_PARAMPROB_OPTION        2 /* unrecognized IPv6 option */

#define ICMP6_FILTER_WILLPASS(type, filterp) \
	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)

#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)

#define ICMP6_FILTER_SETPASS(type, filterp) \
	((((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))))

#define ICMP6_FILTER_SETBLOCK(type, filterp) \
	((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))))

#define ICMP6_FILTER_SETPASSALL(filterp) \
	memset (filterp, 0xFF, sizeof (struct icmp6_filter));

#define ICMP6_FILTER_SETBLOCKALL(filterp) \
	memset (filterp, 0, sizeof (struct icmp6_filter));

#define ND_ROUTER_SOLICIT           133
#define ND_ROUTER_ADVERT            134
#define ND_NEIGHBOR_SOLICIT         135
#define ND_NEIGHBOR_ADVERT          136
#define ND_REDIRECT                 137

struct nd_router_solicit      /* router solicitation */
  {
    struct icmp6_hdr  nd_rs_hdr;
    /* could be followed by options */
  } __attribute__ ((__packed__));

#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;
    uint32_t   nd_ra_reachable;   /* reachable time */
    uint32_t   nd_ra_retransmit;  /* retransmit timer */
    /* could be followed by options */
  } __attribute__ ((__packed__));

#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_FLAG_HOME_AGENT    0x20
#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 */
  } __attribute__ ((__packed__));

#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 */
  } __attribute__ ((__packed__));

#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
#else   /* BYTE_ORDER == LITTLE_ENDIAN */
#define ND_NA_FLAG_ROUTER        0x00000080
#define ND_NA_FLAG_SOLICITED     0x00000040
#define ND_NA_FLAG_OVERRIDE      0x00000020
#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 */
  } __attribute__ ((__packed__));;

#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 */
  {
    uint8_t  nd_opt_type;
    uint8_t  nd_opt_len;        /* in units of 8 octets */
    /* followed by option specific data */
  } __attribute__ ((__packed__));

#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
#define ND_OPT_RTR_ADV_INTERVAL		7
#define ND_OPT_HOME_AGENT_INFO		8

struct nd_opt_prefix_info     /* prefix information */
  {
    uint8_t   nd_opt_pi_type;
    uint8_t   nd_opt_pi_len;
    uint8_t   nd_opt_pi_prefix_len;
    uint8_t   nd_opt_pi_flags_reserved;
    uint32_t  nd_opt_pi_valid_time;
    uint32_t  nd_opt_pi_preferred_time;
    uint32_t  nd_opt_pi_reserved2;
    struct in6_addr  nd_opt_pi_prefix;
  } __attribute__ ((__packed__));

#define ND_OPT_PI_FLAG_ONLINK	0x80
#define ND_OPT_PI_FLAG_AUTO	0x40
#define ND_OPT_PI_FLAG_RADDR	0x20

struct nd_opt_rd_hdr          /* redirected header */
  {
    uint8_t   nd_opt_rh_type;
    uint8_t   nd_opt_rh_len;
    uint16_t  nd_opt_rh_reserved1;
    uint32_t  nd_opt_rh_reserved2;
    /* followed by IP header and data */
  } __attribute__ ((__packed__));

struct nd_opt_mtu             /* MTU option */
  {
    uint8_t   nd_opt_mtu_type;
    uint8_t   nd_opt_mtu_len;
    uint16_t  nd_opt_mtu_reserved;
    uint32_t  nd_opt_mtu_mtu;
  } __attribute__ ((__packed__));

struct mld_hdr
  {
    struct icmp6_hdr    mld_icmp6_hdr;
    struct in6_addr     mld_addr; /* multicast address */
  } __attribute__ ((__packed__));

#define mld_type        mld_icmp6_hdr.icmp6_type
#define mld_code        mld_icmp6_hdr.icmp6_code
#define mld_cksum       mld_icmp6_hdr.icmp6_cksum
#define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
#define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]

/* definitions to provide backward compatibility to old KAME applications */
#define mld6_hdr        mld_hdr
#define mld6_type       mld_type
#define mld6_code       mld_code
#define mld6_cksum      mld_cksum
#define mld6_maxdelay   mld_maxdelay
#define mld6_reserved   mld_reserved
#define mld6_addr       mld_addr

#define ICMP6_ROUTER_RENUMBERING    138

#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 */

struct icmp6_router_renum    /* router renumbering header */
  {
    struct icmp6_hdr    rr_hdr;
    uint8_t             rr_segnum;
    uint8_t             rr_flags;
    uint16_t            rr_maxdelay;
    uint32_t            rr_reserved;
  } __attribute__ ((__packed__));

#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]

/* Router renumbering flags */
#define ICMP6_RR_FLAGS_TEST             0x80
#define ICMP6_RR_FLAGS_REQRESULT        0x40
#define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
#define ICMP6_RR_FLAGS_SPECSITE         0x10
#define ICMP6_RR_FLAGS_PREVDONE         0x08

#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 */
#define MLDV2_LISTENER_REPORT		143	/* RFC3810 listener report */

/* The definitions below are experimental. TBA */
#define MLD_MTRACE_RESP			200	/* mtrace resp (to sender) */
#define MLD_MTRACE			201	/* mtrace messages */

#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_SUBJ_IPV6	0	/* Query Subject is an IPv6 address */
#define ICMP6_NI_SUBJ_FQDN	1	/* Query Subject is a Domain name */
#define ICMP6_NI_SUBJ_IPV4	2	/* Query Subject is an IPv4 address */

#define ICMP6_NI_SUCCESS	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 */

#define ND_REDIRECT_ONLINK	0	/* redirect to an on-link node */
#define ND_REDIRECT_ROUTER	1	/* redirect to a better router */

struct rr_pco_match    /* match prefix part */
  {
    uint8_t             rpm_code;
    uint8_t             rpm_len;
    uint8_t             rpm_ordinal;
    uint8_t             rpm_matchlen;
    uint8_t             rpm_minlen;
    uint8_t             rpm_maxlen;
    uint16_t            rpm_reserved;
    struct in6_addr     rpm_prefix;
  } __attribute__ ((__packed__));

/* PCO code values */
#define RPM_PCO_ADD             1
#define RPM_PCO_CHANGE          2
#define RPM_PCO_SETGLOBAL       3
#define RPM_PCO_MAX             4

struct rr_pco_use      /* use prefix part */
  {
    uint8_t             rpu_uselen;
    uint8_t             rpu_keeplen;
    uint8_t             rpu_ramask;
    uint8_t             rpu_raflags;
    uint32_t            rpu_vltime;
    uint32_t            rpu_pltime;
    uint32_t            rpu_flags;
    struct in6_addr     rpu_prefix;
  } __attribute__ ((__packed__));

#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40

#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 */
  {
    uint16_t            rrr_flags;
    uint8_t             rrr_ordinal;
    uint8_t             rrr_matchedlen;
    uint32_t            rrr_ifid;
    struct in6_addr     rrr_prefix;
  } __attribute__ ((__packed__));

#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       0x0200
# define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
#endif

/* Mobile IPv6 extension: Advertisement Interval.  */
struct nd_opt_adv_interval
  {
    uint8_t   nd_opt_adv_interval_type;
    uint8_t   nd_opt_adv_interval_len;
    uint16_t  nd_opt_adv_interval_reserved;
    uint32_t  nd_opt_adv_interval_ival;
  };

/* Mobile IPv6 extension: Home Agent Info.  */
struct nd_opt_home_agent_info
  {
    uint8_t   nd_opt_home_agent_info_type;
    uint8_t   nd_opt_home_agent_info_len;
    uint16_t  nd_opt_home_agent_info_reserved;
    uint16_t  nd_opt_home_agent_info_preference;
    uint16_t  nd_opt_home_agent_info_lifetime;
  };

/*-
 * 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.
 */

/*-
 * 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.
 * 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
 */

/*
 * IP6 route structure
 */

struct route_in6 {
        struct  rtentry *ro_rt;
        struct  llentry *ro_lle;
        struct  sockaddr_in6 ro_dst;
};

/*
 * Variables related to this implementation
 * of the internet control message protocol version 6.
 */
struct icmp6errstat {
	u_quad_t icp6errs_dst_unreach_noroute;
	u_quad_t icp6errs_dst_unreach_admin;
	u_quad_t icp6errs_dst_unreach_beyondscope;
	u_quad_t icp6errs_dst_unreach_addr;
	u_quad_t icp6errs_dst_unreach_noport;
	u_quad_t icp6errs_packet_too_big;
	u_quad_t icp6errs_time_exceed_transit;
	u_quad_t icp6errs_time_exceed_reassembly;
	u_quad_t icp6errs_paramprob_header;
	u_quad_t icp6errs_paramprob_nextheader;
	u_quad_t icp6errs_paramprob_option;
	u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
	u_quad_t icp6errs_unknown;
};

struct icmp6stat {
/* statistics related to icmp6 packets generated */
	u_quad_t icp6s_error;		/* # of calls to icmp6_error */
	u_quad_t icp6s_canterror;	/* no error 'cuz old was icmp */
	u_quad_t icp6s_toofreq;		/* no error 'cuz rate limitation */
	u_quad_t icp6s_outhist[256];
/* statistics related to input message processed */
	u_quad_t icp6s_badcode;		/* icmp6_code out of range */
	u_quad_t icp6s_tooshort;	/* packet < sizeof(struct icmp6_hdr) */
	u_quad_t icp6s_checksum;	/* bad checksum */
	u_quad_t icp6s_badlen;		/* calculated bound mismatch */
	/*
	 * number of responses: this member is inherited from netinet code, but
	 * for netinet6 code, it is already available in icp6s_outhist[].
	 */
	u_quad_t icp6s_reflect;
	u_quad_t icp6s_inhist[256];	
	u_quad_t icp6s_nd_toomanyopt;	/* too many ND options */
	struct icmp6errstat icp6s_outerrhist;
#define icp6s_odst_unreach_noroute \
	icp6s_outerrhist.icp6errs_dst_unreach_noroute
#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
#define icp6s_odst_unreach_beyondscope \
	icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
#define icp6s_otime_exceed_transit \
	icp6s_outerrhist.icp6errs_time_exceed_transit
#define icp6s_otime_exceed_reassembly \
	icp6s_outerrhist.icp6errs_time_exceed_reassembly
#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
#define icp6s_oparamprob_nextheader \
	icp6s_outerrhist.icp6errs_paramprob_nextheader
#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
	u_quad_t icp6s_pmtuchg;		/* path MTU changes */
	u_quad_t icp6s_nd_badopt;	/* bad ND options */
	u_quad_t icp6s_badns;		/* bad neighbor solicitation */
	u_quad_t icp6s_badna;		/* bad neighbor advertisement */
	u_quad_t icp6s_badrs;		/* bad router advertisement */
	u_quad_t icp6s_badra;		/* bad router advertisement */
	u_quad_t icp6s_badredirect;	/* bad redirect message */
};

#endif /* netinet/icmpv6.h */
