LCOM1920-T02G10

/*        $NetBSD: icmp6.h,v 1.47 2013/07/01 12:43:15 christos Exp $        */

/*        $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 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. 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;

} __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 MLD_LISTENER_QUERY                130         /* multicast listener query */

#define MLD_LISTENER_REPORT                131        /* multicast listener report */

#define MLD_LISTENER_DONE                132        /* multicast listener done */

#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */

/* 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 */

#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 advertisement */

#define ND_NEIGHBOR_SOLICIT                135        /* neighbor solicitation */

#define ND_NEIGHBOR_ADVERT                136        /* neighbor advertisement */

#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 */

#define MLDV2_LISTENER_REPORT                143        /* RFC3810 listener report */

/* The definitions below are experimental. TBA */

#define MLD_MTRACE_RESP                        200        /* mtrace response(to sender) */

#define MLD_MTRACE                        201        /* mtrace messages */

#ifndef _KERNEL

/* the followings are for backward compatibility to old KAME apps. */

#define MLD6_MTRACE_RESP        MLD_MTRACE_RESP

#define MLD6_MTRACE                MLD_MTRACE

#endif

#define ICMP6_MAXTYPE                        201

#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_DST_UNREACH_POLICY        5        /* source address failed ingress/egress policy */

#define ICMP6_DST_UNREACH_REJROUTE        6        /* reject route to destination */

#define ICMP6_DST_UNREACH_SOURCERT        7        /* error in source routing header */

#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 */

} __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]

#define MLD_MINLEN                        24

/*

 * Neighbor Discovery

 */

struct nd_router_solicit {        /* router solicitation */

        struct icmp6_hdr         nd_rs_hdr;

        /* could be followed by options */

} __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 */

} __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

/*

 * Router preference values based on RFC4191.

 */

#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 */

} __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 */

} __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 */

} __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*/

} __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_ADVINTERVAL                7

#define ND_OPT_HOMEAGENT_INFO                8

#define ND_OPT_SOURCE_ADDRLIST                9

#define ND_OPT_TARGET_ADDRLIST                10

#define ND_OPT_MAP                        23        /* RFC 5380 */

#define ND_OPT_ROUTE_INFO                24        /* RFC 4191 */

#define ND_OPT_RDNSS                        25        /* RFC 6016 */

#define ND_OPT_DNSSL                        31        /* RFC 6016 */

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 */

};

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;

} __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 */

} __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;

} __packed;

struct nd_opt_rdnss {                /* RDNSS option RFC 6106 */

        u_int8_t        nd_opt_rdnss_type;

        u_int8_t        nd_opt_rdnss_len;

        u_int16_t        nd_opt_rdnss_reserved;

        u_int32_t        nd_opt_rdnss_lifetime;

        /* followed by list of IP prefixes */

} __packed;

struct nd_opt_dnssl {                /* DNSSL option RFC 6106 */

        u_int8_t        nd_opt_dnssl_type;

        u_int8_t        nd_opt_dnssl_len;

        u_int16_t        nd_opt_dnssl_reserved;

        u_int32_t        nd_opt_dnssl_lifetime;

        /* followed by list of IP prefixes */

} __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 */

} __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 */

} __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 */

} __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;

} __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;

} __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;

} __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;

} __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];

};

#define        ICMP6_FILTER_SETPASSALL(filterp) \

        (void)memset(filterp, 0xff, sizeof(struct icmp6_filter))

#define        ICMP6_FILTER_SETBLOCKALL(filterp) \

        (void)memset(filterp, 0x00, sizeof(struct icmp6_filter))

#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.

 */

/*

 * IPv6 ICMP statistics.

 * Each counter is an unsigned 64-bit value.

 */

#define        ICMP6_STAT_ERROR        0        /* # of calls to icmp6_error */

#define        ICMP6_STAT_CANTERROR        1        /* no error (old was icmp) */

#define        ICMP6_STAT_TOOFREQ        2        /* no error (rate limitation) */

#define        ICMP6_STAT_OUTHIST        3        /* # of output messages */

                /* space for 256 counters */

#define        ICMP6_STAT_BADCODE        259        /* icmp6_code out of range */

#define        ICMP6_STAT_TOOSHORT        260        /* packet < sizeof(struct icmp6_hdr) */

#define        ICMP6_STAT_CHECKSUM        261        /* bad checksum */

#define        ICMP6_STAT_BADLEN        262        /* calculated bound mismatch */

        /*

         * number of responses; this member is inherited from the netinet code,

         * but for netinet6 code, it is already available in outhist[].

         */

#define        ICMP6_STAT_REFLECT        263

#define        ICMP6_STAT_INHIST        264        /* # of input messages */

                /* space for 256 counters */

#define        ICMP6_STAT_ND_TOOMANYOPT 520        /* too many ND options */

#define        ICMP6_STAT_OUTERRHIST        521

                /* space for 13 counters */

#define        ICMP6_STAT_PMTUCHG        534        /* path MTU changes */

#define        ICMP6_STAT_ND_BADOPT        535        /* bad ND options */

#define        ICMP6_STAT_BADNS        536        /* bad neighbor solicititation */

#define        ICMP6_STAT_BADNA        537        /* bad neighbor advertisement */

#define        ICMP6_STAT_BADRS        538        /* bad router solicitiation */

#define        ICMP6_STAT_BADRA        539        /* bad router advertisement */

#define        ICMP6_STAT_BADREDIRECT        540        /* bad redirect message */

#define ICMP6_STAT_DROPPED_RAROUTE 541        /* discarded routes from router advertisement */

#define        ICMP6_NSTATS                542

#define        ICMP6_ERRSTAT_DST_UNREACH_NOROUTE        0

#define        ICMP6_ERRSTAT_DST_UNREACH_ADMIN                1

#define        ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE        2

#define        ICMP6_ERRSTAT_DST_UNREACH_ADDR                3

#define        ICMP6_ERRSTAT_DST_UNREACH_NOPORT        4

#define        ICMP6_ERRSTAT_PACKET_TOO_BIG                5

#define        ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT        6

#define        ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY        7

#define        ICMP6_ERRSTAT_PARAMPROB_HEADER                8

#define        ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER        9

#define        ICMP6_ERRSTAT_PARAMPROB_OPTION                10

#define        ICMP6_ERRSTAT_REDIRECT                        11

#define        ICMP6_ERRSTAT_UNKNOWN                        12

/*

 * 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_ND6_MAXQLEN        24

#define ICMPV6CTL_MAXID                25

#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 }, \

        { 0, 0 }, \

        { 0, 0 }, \

        { 0, 0 }, \

        { "nd6_maxqueuelen", CTLTYPE_INT }, \

}

#ifdef _KERNEL

struct        rtentry;

struct        rttimer;

struct        in6_multi;

void        icmp6_init(void);

void        icmp6_paramerror(struct mbuf *, int);

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

void        icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);

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 *);

int        icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);

void        icmp6_statinc(u_int);

struct        ip6ctlparam;

void        icmp6_mtudisc_update(struct ip6ctlparam *, int);

void        icmp6_mtudisc_callback_register(void (*)(struct in6_addr *));

/* XXX: is this the right place for these macros? */

#define icmp6_ifstat_inc(ifp, tag) \

do {                                                                \

        if (ifp)                                                \

                ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \

} while (/*CONSTCOND*/ 0)

#define icmp6_ifoutstat_inc(ifp, type, code) \

do { \

                icmp6_ifstat_inc(ifp, ifs6_out_msg); \

                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 (/*CONSTCOND*/ 0)

extern int        icmp6_rediraccept;        /* accept/process redirects */

extern int        icmp6_redirtimeout;        /* cache time for redirect routes */

#endif /* _KERNEL */

#ifdef ICMP6_STRINGS

/* Info: http://www.iana.org/assignments/icmpv6-parameters */

static const char * const icmp6_type_err[] = {

        "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob",

        NULL

};

static const char * const icmp6_type_info[] = {

        "echo", "echoreply",

        "mcastlistenq", "mcastlistenrep", "mcastlistendone",

        "rtsol", "rtadv", "neighsol", "neighadv", "redirect",

        "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep",

        "mcastlistenrep2", "haad_req", "haad_rep",

        "mobile_psol", "mobile_padv", "cga_sol", "cga_adv",

        "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm",

        "fmipv6_msg", "rpl_control", NULL

};

static const char * const icmp6_code_none[] = { "none", NULL };

static const char * const icmp6_code_unreach[] = {

        "noroute", "admin", "beyondscope", "addr", "port",

        "srcaddr_policy", "reject_route", "source_route_err", NULL

};

static const char * const icmp6_code_timxceed[] = {

        "intrans", "reass", NULL

};

static const char * const icmp6_code_paramprob[] = {

        "hdr_field", "nxthdr_type", "option", NULL

};

/* not all informational icmps that have codes have a names array */

#endif

#endif /* !_NETINET_ICMP6_H_ */