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/*      $FreeBSD: src/sys/netinet/icmp6.h,v 1.8 2002/05/06 16:28:25 ume Exp $   */

/*      $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $  */

/*

 * 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.

 * 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 _NETINET_ICMP6_H_

#define _NETINET_ICMP6_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;

} __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       /* 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 MLD_LISTENER_QUERY              130     /* multicast listener query */

#define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */

#define MLD_LISTENER_REPORT             131     /* multicast listener report */

#define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */

#define MLD_LISTENER_DONE               132     /* multicast listener done */

#ifndef _KERNEL

/* 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

#endif

#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 MLD_MTRACE_RESP                 200     /* mtrace resp (to sender) */

#define MLD_MTRACE                      201     /* mtrace messages */

#define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */

#define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */

#ifndef _KERNEL

#define MLD6_MTRACE_RESP        MLD_MTRACE_RESP

#define MLD6_MTRACE             MLD_MTRACE

#endif

#define ICMP6_MAXTYPE                   203

#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 */

/* 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 mld_hdr {

        struct icmp6_hdr        mld_icmp6_hdr;

        struct in6_addr         mld_addr; /* multicast address */

} __attribute__((__packed__));

/* definitions to provide backward compatibility to old KAME applications */

#ifndef _KERNEL

#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

#endif

/* shortcut macro definitions */

#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]

/*

 * Neighbor Discovery

 */

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;

        u_int32_t               nd_ra_reachable;        /* reachable time */

        u_int32_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_HA           0x20

/*

 * Router preference values based on draft-draves-ipngwg-router-selection-01.

 * These are non-standard definitions.

 */

#define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */

#define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */

#define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */

#define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */

#define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */

#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

#if BYTE_ORDER == LITTLE_ENDIAN

#define ND_NA_FLAG_ROUTER               0x80

#define ND_NA_FLAG_SOLICITED            0x40

#define ND_NA_FLAG_OVERRIDE             0x20

#endif

#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 */

        u_int8_t        nd_opt_type;

        u_int8_t        nd_opt_len;

        /* 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_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */

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;

} __attribute__((__packed__));

#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 */

} __attribute__((__packed__));

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;

} __attribute__((__packed__));

struct nd_opt_route_info {      /* route info */

        u_int8_t        nd_opt_rti_type;

        u_int8_t        nd_opt_rti_len;

        u_int8_t        nd_opt_rti_prefixlen;

        u_int8_t        nd_opt_rti_flags;

        u_int32_t       nd_opt_rti_lifetime;

        /* prefix follows */

} __attribute__((__packed__));

/*

 * icmp6 namelookup

 */

struct icmp6_namelookup {

        struct icmp6_hdr        icmp6_nl_hdr;

        u_int8_t        icmp6_nl_nonce[8];

        int32_t         icmp6_nl_ttl;

#if 0

        u_int8_t        icmp6_nl_len;

        u_int8_t        icmp6_nl_name[3];

#endif

        /* could be followed by options */

} __attribute__((__packed__));

/*

 * icmp6 node information

 */

struct icmp6_nodeinfo {

        struct icmp6_hdr icmp6_ni_hdr;

        u_int8_t icmp6_ni_nonce[8];

        /* could be followed by reply data */

} __attribute__((__packed__));

#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 (draft 04) */

#define NI_QTYPE_DNSNAME        2 /* DNS Name */

#define NI_QTYPE_NODEADDR       3 /* Node Addresses */

#define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */

#if BYTE_ORDER == BIG_ENDIAN

#define NI_SUPTYPE_FLAG_COMPRESS        0x1

#define NI_FQDN_FLAG_VALIDTTL           0x1

#elif BYTE_ORDER == LITTLE_ENDIAN

#define NI_SUPTYPE_FLAG_COMPRESS        0x0100

#define NI_FQDN_FLAG_VALIDTTL           0x0100

#endif

#ifdef NAME_LOOKUPS_04

#if BYTE_ORDER == BIG_ENDIAN

#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_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

#else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */

#if BYTE_ORDER == BIG_ENDIAN

#define NI_NODEADDR_FLAG_TRUNCATE       0x1

#define NI_NODEADDR_FLAG_ALL            0x2

#define NI_NODEADDR_FLAG_COMPAT         0x4

#define NI_NODEADDR_FLAG_LINKLOCAL      0x8

#define NI_NODEADDR_FLAG_SITELOCAL      0x10

#define NI_NODEADDR_FLAG_GLOBAL         0x20

#define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */

#elif BYTE_ORDER == LITTLE_ENDIAN

#define NI_NODEADDR_FLAG_TRUNCATE       0x0100

#define NI_NODEADDR_FLAG_ALL            0x0200

#define NI_NODEADDR_FLAG_COMPAT         0x0400

#define NI_NODEADDR_FLAG_LINKLOCAL      0x0800

#define NI_NODEADDR_FLAG_SITELOCAL      0x1000

#define NI_NODEADDR_FLAG_GLOBAL         0x2000

#define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */

#endif

#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 */

} __attribute__((__packed__));

/*

 * 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;

} __attribute__((__packed__));

#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 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;

} __attribute__((__packed__));

#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 */

        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;

} __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 */

        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;

} __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

/*

 * icmp6 filter structures.

 */

struct icmp6_filter {

        u_int32_t icmp6_filt[8];

};

#ifdef _KERNEL

#define ICMP6_FILTER_SETPASSALL(filterp) \

do {                                                            \

        int i; u_char *p;                                       \

        p = (u_char *)filterp;                                  \

        for (i = 0; i < sizeof(struct icmp6_filter); i++)        \

                p[i] = 0xff;                                    \

} while (0)

#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_filt[(type) >> 5]) |= (1 << ((type) & 31)))

#define ICMP6_FILTER_SETBLOCK(type, filterp) \

        (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))

#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)

/*

 * 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 */

};

/*

 * Names for ICMP sysctl objects

 */

#define ICMPV6CTL_STATS         1

#define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */

#define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */

#if 0   /*obsoleted*/

#define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */

#endif

#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      obsoleted, do not reuse here */

#define ICMPV6CTL_NODEINFO      13

#define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */

#define ICMPV6CTL_ND6_MAXNUDHINT        15

#define ICMPV6CTL_MTUDISC_HIWAT 16

#define ICMPV6CTL_MTUDISC_LOWAT 17

#define ICMPV6CTL_ND6_DEBUG     18

#define ICMPV6CTL_ND6_DRLIST    19

#define ICMPV6CTL_ND6_PRLIST    20

#define ICMPV6CTL_MAXID         21

#define ICMPV6CTL_NAMES { \

        { 0, 0 }, \

        { 0, 0 }, \

        { "rediraccept", CTLTYPE_INT }, \

        { "redirtimeout", CTLTYPE_INT }, \

        { 0, 0 }, \

        { 0, 0 }, \

        { "nd6_prune", CTLTYPE_INT }, \

        { 0, 0 }, \

        { "nd6_delay", CTLTYPE_INT }, \

        { "nd6_umaxtries", CTLTYPE_INT }, \

        { "nd6_mmaxtries", CTLTYPE_INT }, \

        { "nd6_useloopback", CTLTYPE_INT }, \

        { 0, 0 }, \

        { "nodeinfo", CTLTYPE_INT }, \

        { "errppslimit", CTLTYPE_INT }, \

        { "nd6_maxnudhint", CTLTYPE_INT }, \

        { "mtudisc_hiwat", CTLTYPE_INT }, \

        { "mtudisc_lowat", CTLTYPE_INT }, \

        { "nd6_debug", CTLTYPE_INT }, \

        { 0, 0 }, \

        { 0, 0 }, \

}

#define RTF_PROBEMTU    RTF_PROTO1

#ifdef _KERNEL

# ifdef __STDC__

struct  rtentry;

struct  rttimer;

struct  in6_multi;

# endif

void    icmp6_init(void);

void    icmp6_paramerror(struct mbuf *, int);

void    icmp6_error(struct mbuf *, int, int, int);

int     icmp6_input(struct mbuf **, int *, int);

void    icmp6_fasttimo(void);

void    icmp6_reflect(struct mbuf *, size_t);

void    icmp6_prepare(struct mbuf *);

void    icmp6_redirect_input(struct mbuf *, int);

void    icmp6_redirect_output(struct mbuf *, struct rtentry *);

struct  ip6ctlparam;

void    icmp6_mtudisc_update(struct ip6ctlparam *, int);

/* 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 MLD_LISTENER_QUERY: \

                         icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \

                         break; \

                 case MLD_LISTENER_REPORT: \

                         icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \

                         break; \

                 case MLD_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 _NETINET_ICMP6_H_ */