root/netinet/icmp6.h

INCLUDED FROM

    1 /*      $OpenBSD: icmp6.h,v 1.32 2006/07/06 02:56:58 brad Exp $ */
    2 /*      $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $  */
    4 /*
    5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. Neither the name of the project nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   33 /*
   34  * Copyright (c) 1982, 1986, 1993
   35  *      The Regents of the University of California.  All rights reserved.
   36  *
   37  * Redistribution and use in source and binary forms, with or without
   38  * modification, are permitted provided that the following conditions
   39  * are met:
   40  * 1. Redistributions of source code must retain the above copyright
   41  *    notice, this list of conditions and the following disclaimer.
   42  * 2. Redistributions in binary form must reproduce the above copyright
   43  *    notice, this list of conditions and the following disclaimer in the
   44  *    documentation and/or other materials provided with the distribution.
   45  * 3. Neither the name of the University nor the names of its contributors
   46  *    may be used to endorse or promote products derived from this software
   47  *    without specific prior written permission.
   48  *
   49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   59  * SUCH DAMAGE.
   60  *
   61  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
   62  */
   64 #ifndef _NETINET_ICMP6_H_
   65 #define _NETINET_ICMP6_H_
   67 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
   68                                            - sizeof(struct icmp6_hdr) */
   70 struct icmp6_hdr {
u_int8_t        icmp6_type;     /* type field */
u_int8_t        icmp6_code;     /* code field */
u_int16_t       icmp6_cksum;    /* checksum field */
   74         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 */
   78         } icmp6_dataun;
   79 } __packed;
   81 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
   82 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
   83 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
   84 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
   85 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
   86 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
   87 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
   88 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
   90 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
   91 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
   92 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
   93 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
   95 #define ICMP6_ECHO_REQUEST              128     /* echo service */
   96 #define ICMP6_ECHO_REPLY                129     /* echo reply */
   97 #define MLD_LISTENER_QUERY              130     /* multicast listener query */
   98 #define MLD_LISTENER_REPORT             131     /* multicast listener report */
   99 #define MLD_LISTENER_DONE               132     /* multicast listener done */
  101 /* RFC2292 decls */
  102 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
  103 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
  104 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
  106 #ifndef _KERNEL
  107 /* the followings are for backward compatibility to old KAME apps. */
  108 #define MLD6_LISTENER_QUERY     MLD_LISTENER_QUERY
  109 #define MLD6_LISTENER_REPORT    MLD_LISTENER_REPORT
  110 #define MLD6_LISTENER_DONE      MLD_LISTENER_DONE
  111 #endif
  113 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
  114 #define ND_ROUTER_ADVERT                134     /* router advertisement */
  115 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
  116 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisement */
  117 #define ND_REDIRECT                     137     /* redirect */
  119 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
  121 #define ICMP6_WRUREQUEST                139     /* who are you request */
  122 #define ICMP6_WRUREPLY                  140     /* who are you reply */
  123 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
  124 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
  125 #define ICMP6_NI_QUERY                  139     /* node information request */
  126 #define ICMP6_NI_REPLY                  140     /* node information reply */
  128 /* The definitions below are experimental. TBA */
  129 #define MLD_MTRACE_RESP                 200     /* mtrace response(to sender) */
  130 #define MLD_MTRACE                      201     /* mtrace messages */
  132 #ifndef _KERNEL
  133 /* the followings are for backward compatibility to old KAME apps. */
  134 #define MLD6_MTRACE_RESP        MLD_MTRACE_RESP
  135 #define MLD6_MTRACE             MLD_MTRACE
  136 #endif
  138 #define ICMP6_MAXTYPE                   201
  140 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
  141 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
  142 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
  143 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
  144 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
  145 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
  147 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
  148 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
  150 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
  151 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
  152 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
  154 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
  156 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
  157 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
  158 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
  160 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
  161 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
  162 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
  164 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
  165 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
  166 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
  168 /* Used in kernel only */
  169 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
  170 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
  172 /*
  173  * Multicast Listener Discovery
  174  */
  175 struct mld_hdr {
  176         struct icmp6_hdr        mld_icmp6_hdr;
  177         struct in6_addr         mld_addr; /* multicast address */
  178 } __packed;
  180 /* definitions to provide backward compatibility to old KAME applications */
  181 #ifndef _KERNEL
  182 #define mld6_hdr        mld_hdr
  183 #define mld6_type       mld_type
  184 #define mld6_code       mld_code
  185 #define mld6_cksum      mld_cksum
  186 #define mld6_maxdelay   mld_maxdelay
  187 #define mld6_reserved   mld_reserved
  188 #define mld6_addr       mld_addr
  189 #endif
  191 /* shortcut macro definitions */
  192 #define mld_type        mld_icmp6_hdr.icmp6_type
  193 #define mld_code        mld_icmp6_hdr.icmp6_code
  194 #define mld_cksum       mld_icmp6_hdr.icmp6_cksum
  195 #define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
  196 #define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
  198 /*
  199  * Neighbor Discovery
  200  */
  202 struct nd_router_solicit {      /* router solicitation */
  203         struct icmp6_hdr        nd_rs_hdr;
  204         /* could be followed by options */
  205 } __packed;
  207 #define nd_rs_type      nd_rs_hdr.icmp6_type
  208 #define nd_rs_code      nd_rs_hdr.icmp6_code
  209 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
  210 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
  212 struct nd_router_advert {       /* router advertisement */
  213         struct icmp6_hdr        nd_ra_hdr;
u_int32_t               nd_ra_reachable;        /* reachable time */
u_int32_t               nd_ra_retransmit;       /* retransmit timer */
  216         /* could be followed by options */
  217 } __packed;
  219 #define nd_ra_type              nd_ra_hdr.icmp6_type
  220 #define nd_ra_code              nd_ra_hdr.icmp6_code
  221 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
  222 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
  223 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
  224 #define ND_RA_FLAG_MANAGED      0x80
  225 #define ND_RA_FLAG_OTHER        0x40
  226 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
  228 struct nd_neighbor_solicit {    /* neighbor solicitation */
  229         struct icmp6_hdr        nd_ns_hdr;
  230         struct in6_addr         nd_ns_target;   /*target address */
  231         /* could be followed by options */
  232 } __packed;
  234 #define nd_ns_type              nd_ns_hdr.icmp6_type
  235 #define nd_ns_code              nd_ns_hdr.icmp6_code
  236 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
  237 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
  239 struct nd_neighbor_advert {     /* neighbor advertisement */
  240         struct icmp6_hdr        nd_na_hdr;
  241         struct in6_addr         nd_na_target;   /* target address */
  242         /* could be followed by options */
  243 } __packed;
  245 #define nd_na_type              nd_na_hdr.icmp6_type
  246 #define nd_na_code              nd_na_hdr.icmp6_code
  247 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
  248 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
  249 #if _BYTE_ORDER == _BIG_ENDIAN
  250 #define ND_NA_FLAG_ROUTER               0x80000000
  251 #define ND_NA_FLAG_SOLICITED            0x40000000
  252 #define ND_NA_FLAG_OVERRIDE             0x20000000
  253 #else
  254 #if _BYTE_ORDER == _LITTLE_ENDIAN
  255 #define ND_NA_FLAG_ROUTER               0x80
  256 #define ND_NA_FLAG_SOLICITED            0x40
  257 #define ND_NA_FLAG_OVERRIDE             0x20
  258 #endif
  259 #endif
  261 struct nd_redirect {            /* redirect */
  262         struct icmp6_hdr        nd_rd_hdr;
  263         struct in6_addr         nd_rd_target;   /* target address */
  264         struct in6_addr         nd_rd_dst;      /* destination address */
  265         /* could be followed by options */
  266 } __packed;
  268 #define nd_rd_type              nd_rd_hdr.icmp6_type
  269 #define nd_rd_code              nd_rd_hdr.icmp6_code
  270 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
  271 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
  273 struct nd_opt_hdr {             /* Neighbor discovery option header */
u_int8_t        nd_opt_type;
u_int8_t        nd_opt_len;
  276         /* followed by option specific data*/
  277 } __packed;
  279 #define ND_OPT_SOURCE_LINKADDR          1
  280 #define ND_OPT_TARGET_LINKADDR          2
  281 #define ND_OPT_PREFIX_INFORMATION       3
  282 #define ND_OPT_REDIRECTED_HEADER        4
  283 #define ND_OPT_MTU                      5
  285 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;
  293         struct in6_addr nd_opt_pi_prefix;
  294 } __packed;
  296 #define ND_OPT_PI_FLAG_ONLINK           0x80
  297 #define ND_OPT_PI_FLAG_AUTO             0x40
  299 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;
  304         /* followed by IP header and data */
  305 } __packed;
  307 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;
  312 } __packed;
  314 /*
  315  * icmp6 namelookup
  316  */
  318 struct icmp6_namelookup {
  319         struct icmp6_hdr        icmp6_nl_hdr;
u_int8_t        icmp6_nl_nonce[8];
int32_t         icmp6_nl_ttl;
  322 #if 0
u_int8_t        icmp6_nl_len;
u_int8_t        icmp6_nl_name[3];
  325 #endif
  326         /* could be followed by options */
  327 } __packed;
  329 /*
  330  * icmp6 node information
  331  */
  332 struct icmp6_nodeinfo {
  333         struct icmp6_hdr icmp6_ni_hdr;
u_int8_t icmp6_ni_nonce[8];
  335         /* could be followed by reply data */
  336 } __packed;
  338 #define ni_type         icmp6_ni_hdr.icmp6_type
  339 #define ni_code         icmp6_ni_hdr.icmp6_code
  340 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
  341 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
  342 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
  344 #define NI_QTYPE_NOOP           0 /* NOOP  */
  345 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
  346 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
  347 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
  348 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
  349 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
  351 #if _BYTE_ORDER == _BIG_ENDIAN
  352 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
  353 #define NI_FQDN_FLAG_VALIDTTL           0x1
  354 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  355 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
  356 #define NI_FQDN_FLAG_VALIDTTL           0x0100
  357 #endif
  359 #ifdef NAME_LOOKUPS_04
  360 #if _BYTE_ORDER == _BIG_ENDIAN
  361 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
  362 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
  363 #define NI_NODEADDR_FLAG_GLOBAL         0x4
  364 #define NI_NODEADDR_FLAG_ALL            0x8
  365 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
  366 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
  367 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  368 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
  369 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
  370 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
  371 #define NI_NODEADDR_FLAG_ALL            0x0800
  372 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
  373 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
  374 #endif
  375 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
  376 #if _BYTE_ORDER == _BIG_ENDIAN
  377 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
  378 #define NI_NODEADDR_FLAG_ALL            0x2
  379 #define NI_NODEADDR_FLAG_COMPAT         0x4
  380 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
  381 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
  382 #define NI_NODEADDR_FLAG_GLOBAL         0x20
  383 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
  384 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  385 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
  386 #define NI_NODEADDR_FLAG_ALL            0x0200
  387 #define NI_NODEADDR_FLAG_COMPAT         0x0400
  388 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
  389 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
  390 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
  391 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
  392 #endif
  393 #endif
  395 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 */
  399 } __packed;
  401 /*
  402  * Router Renumbering. as router-renum-08.txt
  403  */
  404 struct icmp6_router_renum {     /* router renumbering header */
  405         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;
  410 } __packed;
  412 #define ICMP6_RR_FLAGS_TEST             0x80
  413 #define ICMP6_RR_FLAGS_REQRESULT        0x40
  414 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
  415 #define ICMP6_RR_FLAGS_SPECSITE         0x10
  416 #define ICMP6_RR_FLAGS_PREVDONE         0x08
  418 #define rr_type         rr_hdr.icmp6_type
  419 #define rr_code         rr_hdr.icmp6_code
  420 #define rr_cksum        rr_hdr.icmp6_cksum
  421 #define rr_seqnum       rr_hdr.icmp6_data32[0]
  423 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;
  431         struct  in6_addr        rpm_prefix;
  432 } __packed;
  434 #define RPM_PCO_ADD             1
  435 #define RPM_PCO_CHANGE          2
  436 #define RPM_PCO_SETGLOBAL       3
  437 #define RPM_PCO_MAX             4
  439 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;
  447         struct  in6_addr rpu_prefix;
  448 } __packed;
  449 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
  450 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
  452 #if _BYTE_ORDER == _BIG_ENDIAN
  453 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
  454 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
  455 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  456 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
  457 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
  458 #endif
  460 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;
  465         struct  in6_addr rrr_prefix;
  466 } __packed;
  467 #if _BYTE_ORDER == _BIG_ENDIAN
  468 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
  469 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
  470 #elif _BYTE_ORDER == _LITTLE_ENDIAN
  471 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
  472 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
  473 #endif
  475 /*
  476  * icmp6 filter structures.
  477  */
  479 struct icmp6_filter {
u_int32_t icmp6_filt[8];
  481 };
  483 #ifdef _KERNEL
  484 #define ICMP6_FILTER_SETPASSALL(filterp) \
  485 do {                                                            \
  486         int i; u_char *p;                                       \
p = (u_char *)filterp;                                  \
  488         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
p[i] = 0xff;                                    \
  490 } while (0)
  491 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
bzero(filterp, sizeof(struct icmp6_filter))
  493 #else /* _KERNEL */
  494 #define ICMP6_FILTER_SETPASSALL(filterp) \
memset(filterp, 0xff, sizeof(struct icmp6_filter))
  496 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
memset(filterp, 0x00, sizeof(struct icmp6_filter))
  498 #endif /* _KERNEL */
  500 #define ICMP6_FILTER_SETPASS(type, filterp) \
  501         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
  502 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
  503         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
  504 #define ICMP6_FILTER_WILLPASS(type, filterp) \
  505         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
  506 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
  507         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
  509 /*
  510  * Variables related to this implementation
  511  * of the internet control message protocol version 6.
  512  */
  513 struct icmp6errstat {
u_int64_t icp6errs_dst_unreach_noroute;
u_int64_t icp6errs_dst_unreach_admin;
u_int64_t icp6errs_dst_unreach_beyondscope;
u_int64_t icp6errs_dst_unreach_addr;
u_int64_t icp6errs_dst_unreach_noport;
u_int64_t icp6errs_packet_too_big;
u_int64_t icp6errs_time_exceed_transit;
u_int64_t icp6errs_time_exceed_reassembly;
u_int64_t icp6errs_paramprob_header;
u_int64_t icp6errs_paramprob_nextheader;
u_int64_t icp6errs_paramprob_option;
u_int64_t icp6errs_redirect; /* we regard redirect as an error here */
u_int64_t icp6errs_unknown;
  527 };
  529 struct icmp6stat {
  530 /* statistics related to icmp6 packets generated */
u_int64_t icp6s_error;          /* # of calls to icmp6_error */
u_int64_t icp6s_canterror;      /* no error because old was icmp */
u_int64_t icp6s_toofreq;        /* no error because rate limitation */
u_int64_t icp6s_outhist[256];
  535 /* statistics related to input message processed */
u_int64_t icp6s_badcode;        /* icmp6_code out of range */
u_int64_t icp6s_tooshort;       /* packet < sizeof(struct icmp6_hdr) */
u_int64_t icp6s_checksum;       /* bad checksum */
u_int64_t icp6s_badlen;         /* calculated bound mismatch */
  540         /*
  541          * number of responses: this member is inherited from netinet code, but
  542          * for netinet6 code, it is already available in icp6s_outhist[].
  543          */
u_int64_t icp6s_reflect;
u_int64_t icp6s_inhist[256];
u_int64_t icp6s_nd_toomanyopt;  /* too many ND options */
  547         struct icmp6errstat icp6s_outerrhist;
  548 #define icp6s_odst_unreach_noroute \
icp6s_outerrhist.icp6errs_dst_unreach_noroute
  550 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
  551 #define icp6s_odst_unreach_beyondscope \
icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
  553 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
  554 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
  555 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
  556 #define icp6s_otime_exceed_transit \
icp6s_outerrhist.icp6errs_time_exceed_transit
  558 #define icp6s_otime_exceed_reassembly \
icp6s_outerrhist.icp6errs_time_exceed_reassembly
  560 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
  561 #define icp6s_oparamprob_nextheader \
icp6s_outerrhist.icp6errs_paramprob_nextheader
  563 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
  564 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
  565 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
u_int64_t icp6s_pmtuchg;        /* path MTU changes */
u_int64_t icp6s_nd_badopt;      /* bad ND options */
u_int64_t icp6s_badns;          /* bad neighbor solicitation */
u_int64_t icp6s_badna;          /* bad neighbor advertisement */
u_int64_t icp6s_badrs;          /* bad router advertisement */
u_int64_t icp6s_badra;          /* bad router advertisement */
u_int64_t icp6s_badredirect;    /* bad redirect message */
  573 };
  575 /*
  576  * Names for ICMP sysctl objects
  577  */
  578 #define ICMPV6CTL_STATS         1
  579 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
  580 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
  581 #if 0   /*obsoleted*/
  582 #define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */
  583 #endif
  584 #define ICMPV6CTL_ND6_PRUNE     6
  585 #define ICMPV6CTL_ND6_DELAY     8
  586 #define ICMPV6CTL_ND6_UMAXTRIES 9
  587 #define ICMPV6CTL_ND6_MMAXTRIES         10
  588 #define ICMPV6CTL_ND6_USELOOPBACK       11
  589 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
  590 #define ICMPV6CTL_NODEINFO      13
  591 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
  592 #define ICMPV6CTL_ND6_MAXNUDHINT        15
  593 #define ICMPV6CTL_MTUDISC_HIWAT 16
  594 #define ICMPV6CTL_MTUDISC_LOWAT 17
  595 #define ICMPV6CTL_ND6_DEBUG     18
  596 #define ICMPV6CTL_ND6_DRLIST    19
  597 #define ICMPV6CTL_ND6_PRLIST    20
  598 #define ICMPV6CTL_MAXID         21
  600 #define ICMPV6CTL_NAMES { \
  601         { 0, 0 }, \
  602         { 0, 0 }, \
  603         { "rediraccept", CTLTYPE_INT }, \
  604         { "redirtimeout", CTLTYPE_INT }, \
  605         { 0, 0 }, \
  606         { 0, 0 }, \
  607         { "nd6_prune", CTLTYPE_INT }, \
  608         { 0, 0 }, \
  609         { "nd6_delay", CTLTYPE_INT }, \
  610         { "nd6_umaxtries", CTLTYPE_INT }, \
  611         { "nd6_mmaxtries", CTLTYPE_INT }, \
  612         { "nd6_useloopback", CTLTYPE_INT }, \
  613         { 0, 0 }, \
  614         { "nodeinfo", CTLTYPE_INT }, \
  615         { "errppslimit", CTLTYPE_INT }, \
  616         { "nd6_maxnudhint", CTLTYPE_INT }, \
  617         { "mtudisc_hiwat", CTLTYPE_INT }, \
  618         { "mtudisc_lowat", CTLTYPE_INT }, \
  619         { "nd6_debug", CTLTYPE_INT }, \
  620         { 0, 0 }, \
  621         { 0, 0 }, \
  622 }
  624 #define ICMPV6CTL_VARS { \
NULL, \
NULL, \
  627         &icmp6_rediraccept, \
  628         &icmp6_redirtimeout, \
NULL, \
NULL, \
  631         &nd6_prune, \
NULL, \
  633         &nd6_delay, \
  634         &nd6_umaxtries, \
  635         &nd6_mmaxtries, \
  636         &nd6_useloopback, \
NULL, \
  638         &icmp6_nodeinfo, \
  639         &icmp6errppslim, \
  640         &nd6_maxnudhint, \
  641         &icmp6_mtudisc_hiwat, \
  642         &icmp6_mtudisc_lowat, \
  643         &nd6_debug, \
NULL, \
NULL, \
  646 }
  648 #define RTF_PROBEMTU    RTF_PROTO1
  650 #ifdef _KERNEL
  651 # ifdef __STDC__
  652 struct  rtentry;
  653 struct  rttimer;
  654 struct  in6_multi;
  655 # endif
  656 void    icmp6_init(void);
  657 void    icmp6_paramerror(struct mbuf *, int);
  658 void    icmp6_error(struct mbuf *, int, int, int);
  659 int     icmp6_input(struct mbuf **, int *, int);
  660 void    icmp6_fasttimo(void);
  661 void    icmp6_reflect(struct mbuf *, size_t);
  662 void    icmp6_prepare(struct mbuf *);
  663 void    icmp6_redirect_input(struct mbuf *, int);
  664 void    icmp6_redirect_output(struct mbuf *, struct rtentry *);
  665 int     icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
  667 struct  ip6ctlparam;
  668 void    icmp6_mtudisc_update(struct ip6ctlparam *, int);
  669 void    icmp6_mtudisc_callback_register(void (*)(struct in6_addr *));
  671 /* XXX: is this the right place for these macros? */
  672 #define icmp6_ifstat_inc(ifp, tag) \
  673 do {                                                            \
  674         if (ifp)                                                \
  675                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
  676 } while (0)
  678 #define icmp6_ifoutstat_inc(ifp, type, code) \
  679 do { \
icmp6_ifstat_inc(ifp, ifs6_out_msg); \
  681                 switch(type) { \
  682                  case ICMP6_DST_UNREACH: \
icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
  684                          if (code == ICMP6_DST_UNREACH_ADMIN) \
icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
  686                          break; \
  687                  case ICMP6_PACKET_TOO_BIG: \
icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
  689                          break; \
  690                  case ICMP6_TIME_EXCEEDED: \
icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
  692                          break; \
  693                  case ICMP6_PARAM_PROB: \
icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
  695                          break; \
  696                  case ICMP6_ECHO_REQUEST: \
icmp6_ifstat_inc(ifp, ifs6_out_echo); \
  698                          break; \
  699                  case ICMP6_ECHO_REPLY: \
icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
  701                          break; \
  702                  case MLD_LISTENER_QUERY: \
icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
  704                          break; \
  705                  case MLD_LISTENER_REPORT: \
icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
  707                          break; \
  708                  case MLD_LISTENER_DONE: \
icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
  710                          break; \
  711                  case ND_ROUTER_SOLICIT: \
icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
  713                          break; \
  714                  case ND_ROUTER_ADVERT: \
icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
  716                          break; \
  717                  case ND_NEIGHBOR_SOLICIT: \
icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
  719                          break; \
  720                  case ND_NEIGHBOR_ADVERT: \
icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
  722                          break; \
  723                  case ND_REDIRECT: \
icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
  725                          break; \
  726                 } \
  727 } while (0)
  729 extern int      icmp6_rediraccept;      /* accept/process redirects */
  730 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
  731 #endif /* _KERNEL */
  732 #endif /* _NETINET_ICMP6_H_ */