bsd/netinet/icmp6.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*      $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $  */
  31
  32 /*
  33  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the project nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 /*
  62  * Copyright (c) 1982, 1986, 1993
  63  *      The Regents of the University of California.  All rights reserved.
  64  *
  65  * Redistribution and use in source and binary forms, with or without
  66  * modification, are permitted provided that the following conditions
  67  * are met:
  68  * 1. Redistributions of source code must retain the above copyright
  69  *    notice, this list of conditions and the following disclaimer.
  70  * 2. Redistributions in binary form must reproduce the above copyright
  71  *    notice, this list of conditions and the following disclaimer in the
  72  *    documentation and/or other materials provided with the distribution.
  73  * 3. All advertising materials mentioning features or use of this software
  74  *    must display the following acknowledgement:
  75  *      This product includes software developed by the University of
  76  *      California, Berkeley and its contributors.
  77  * 4. Neither the name of the University nor the names of its contributors
  78  *    may be used to endorse or promote products derived from this software
  79  *    without specific prior written permission.
  80  *
  81  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  82  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  83  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  84  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  85  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  86  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  87  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  88  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  89  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  90  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  91  * SUCH DAMAGE.
  92  *
  93  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  94  */
  95
  96 #ifndef _NETINET_ICMP6_H_
  97 #define _NETINET_ICMP6_H_
  98 #include <sys/appleapiopts.h>
  99
 100 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
 101                                            - sizeof(struct icmp6_hdr) */
 102
 103 struct icmp6_hdr {
 104         u_int8_t        icmp6_type;     /* type field */
 105         u_int8_t        icmp6_code;     /* code field */
 106         u_int16_t       icmp6_cksum;    /* checksum field */
 107         union {
 108                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
 109                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
 110                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
 111         } icmp6_dataun;
 112 };
 113
 114 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
 115 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
 116 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
 117 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
 118 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
 119 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
 120 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
 121 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
 122
 123 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
 124 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 125 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 126 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 127
 128 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 129 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 130 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 131 #define MLD6_LISTENER_QUERY             130     /* multicast listener query */
 132 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 133 #define MLD6_LISTENER_REPORT            131     /* multicast listener report */
 134 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 135 #define MLD6_LISTENER_DONE              132     /* multicast listener done */
 136
 137 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 138 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 139 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 140 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 141 #define ND_REDIRECT                     137     /* redirect */
 142
 143 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 144
 145 #define ICMP6_WRUREQUEST                139     /* who are you request */
 146 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 147 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 148 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 149 #define ICMP6_NI_QUERY                  139     /* node information request */
 150 #define ICMP6_NI_REPLY                  140     /* node information reply */
 151
 152 /* The definitions below are experimental. TBA */
 153 #define MLD6_MTRACE_RESP                200     /* mtrace response(to sender) */
 154 #define MLD6_MTRACE                     201     /* mtrace messages */
 155
 156 #define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */
 157 #define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */
 158
 159 #define ICMP6_MAXTYPE                   203
 160
 161 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 162 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 163 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 164 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 165 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 166 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 167
 168 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 169 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 170
 171 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 172 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 173 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 174
 175 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 176
 177 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 178 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 179 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 180
 181 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 182 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 183 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 184
 185 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 186 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 187 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 188
 189 /* Used in kernel only */
 190 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 191 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 192
 193 /*
 194  * Multicast Listener Discovery
 195  */
 196 struct mld6_hdr {
 197         struct icmp6_hdr        mld6_hdr;
 198         struct in6_addr         mld6_addr; /* multicast address */
 199 };
 200
 201 #define mld6_type       mld6_hdr.icmp6_type
 202 #define mld6_code       mld6_hdr.icmp6_code
 203 #define mld6_cksum      mld6_hdr.icmp6_cksum
 204 #define mld6_maxdelay   mld6_hdr.icmp6_data16[0]
 205 #define mld6_reserved   mld6_hdr.icmp6_data16[1]
 206
 207 /*
 208  * Neighbor Discovery
 209  */
 210
 211 struct nd_router_solicit {      /* router solicitation */
 212         struct icmp6_hdr        nd_rs_hdr;
 213         /* could be followed by options */
 214 };
 215
 216 #define nd_rs_type      nd_rs_hdr.icmp6_type
 217 #define nd_rs_code      nd_rs_hdr.icmp6_code
 218 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 219 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 220
 221 struct nd_router_advert {       /* router advertisement */
 222         struct icmp6_hdr        nd_ra_hdr;
 223         u_int32_t               nd_ra_reachable;        /* reachable time */
 224         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 225         /* could be followed by options */
 226 };
 227
 228 #define nd_ra_type              nd_ra_hdr.icmp6_type
 229 #define nd_ra_code              nd_ra_hdr.icmp6_code
 230 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 231 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 232 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 233 #define ND_RA_FLAG_MANAGED      0x80
 234 #define ND_RA_FLAG_OTHER        0x40
 235 #define ND_RA_FLAG_HA           0x20
 236
 237 /*
 238  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 239  * These are non-standard definitions.
 240  */
 241 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 242
 243 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 244 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 245 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 246 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 247
 248 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 249
 250 struct nd_neighbor_solicit {    /* neighbor solicitation */
 251         struct icmp6_hdr        nd_ns_hdr;
 252         struct in6_addr         nd_ns_target;   /*target address */
 253         /* could be followed by options */
 254 };
 255
 256 #define nd_ns_type              nd_ns_hdr.icmp6_type
 257 #define nd_ns_code              nd_ns_hdr.icmp6_code
 258 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 259 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 260
 261 struct nd_neighbor_advert {     /* neighbor advertisement */
 262         struct icmp6_hdr        nd_na_hdr;
 263         struct in6_addr         nd_na_target;   /* target address */
 264         /* could be followed by options */
 265 };
 266
 267 #define nd_na_type              nd_na_hdr.icmp6_type
 268 #define nd_na_code              nd_na_hdr.icmp6_code
 269 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 270 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 271 #if BYTE_ORDER == BIG_ENDIAN
 272 #define ND_NA_FLAG_ROUTER               0x80000000
 273 #define ND_NA_FLAG_SOLICITED            0x40000000
 274 #define ND_NA_FLAG_OVERRIDE             0x20000000
 275 #else
 276 #if BYTE_ORDER == LITTLE_ENDIAN
 277 #define ND_NA_FLAG_ROUTER               0x80
 278 #define ND_NA_FLAG_SOLICITED            0x40
 279 #define ND_NA_FLAG_OVERRIDE             0x20
 280 #endif
 281 #endif
 282
 283 struct nd_redirect {            /* redirect */
 284         struct icmp6_hdr        nd_rd_hdr;
 285         struct in6_addr         nd_rd_target;   /* target address */
 286         struct in6_addr         nd_rd_dst;      /* destination address */
 287         /* could be followed by options */
 288 };
 289
 290 #define nd_rd_type              nd_rd_hdr.icmp6_type
 291 #define nd_rd_code              nd_rd_hdr.icmp6_code
 292 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 293 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 294
 295 struct nd_opt_hdr {             /* Neighbor discovery option header */
 296         u_int8_t        nd_opt_type;
 297         u_int8_t        nd_opt_len;
 298         /* followed by option specific data*/
 299 };
 300
 301 #define ND_OPT_SOURCE_LINKADDR          1
 302 #define ND_OPT_TARGET_LINKADDR          2
 303 #define ND_OPT_PREFIX_INFORMATION       3
 304 #define ND_OPT_REDIRECTED_HEADER        4
 305 #define ND_OPT_MTU                      5
 306
 307 #define ND_OPT_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 308
 309 struct nd_opt_prefix_info {     /* prefix information */
 310         u_int8_t        nd_opt_pi_type;
 311         u_int8_t        nd_opt_pi_len;
 312         u_int8_t        nd_opt_pi_prefix_len;
 313         u_int8_t        nd_opt_pi_flags_reserved;
 314         u_int32_t       nd_opt_pi_valid_time;
 315         u_int32_t       nd_opt_pi_preferred_time;
 316         u_int32_t       nd_opt_pi_reserved2;
 317         struct in6_addr nd_opt_pi_prefix;
 318 };
 319
 320 #define ND_OPT_PI_FLAG_ONLINK           0x80
 321 #define ND_OPT_PI_FLAG_AUTO             0x40
 322
 323 struct nd_opt_rd_hdr {          /* redirected header */
 324         u_int8_t        nd_opt_rh_type;
 325         u_int8_t        nd_opt_rh_len;
 326         u_int16_t       nd_opt_rh_reserved1;
 327         u_int32_t       nd_opt_rh_reserved2;
 328         /* followed by IP header and data */
 329 };
 330
 331 struct nd_opt_mtu {             /* MTU option */
 332         u_int8_t        nd_opt_mtu_type;
 333         u_int8_t        nd_opt_mtu_len;
 334         u_int16_t       nd_opt_mtu_reserved;
 335         u_int32_t       nd_opt_mtu_mtu;
 336 };
 337
 338 struct nd_opt_route_info {      /* route info */
 339         u_int8_t        nd_opt_rti_type;
 340         u_int8_t        nd_opt_rti_len;
 341         u_int8_t        nd_opt_rti_prefixlen;
 342         u_int8_t        nd_opt_rti_flags;
 343         u_int32_t       nd_opt_rti_lifetime;
 344         /* followed by prefix */
 345 };
 346
 347 /*
 348  * icmp6 namelookup
 349  */
 350
 351 struct icmp6_namelookup {
 352         struct icmp6_hdr        icmp6_nl_hdr;
 353         u_int8_t        icmp6_nl_nonce[8];
 354         int32_t         icmp6_nl_ttl;
 355 #if 0
 356         u_int8_t        icmp6_nl_len;
 357         u_int8_t        icmp6_nl_name[3];
 358 #endif
 359         /* could be followed by options */
 360 };
 361
 362 /*
 363  * icmp6 node information
 364  */
 365 struct icmp6_nodeinfo {
 366         struct icmp6_hdr icmp6_ni_hdr;
 367         u_int8_t icmp6_ni_nonce[8];
 368         /* could be followed by reply data */
 369 };
 370
 371 #define ni_type         icmp6_ni_hdr.icmp6_type
 372 #define ni_code         icmp6_ni_hdr.icmp6_code
 373 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 374 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 375 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 376
 377 #define NI_QTYPE_NOOP           0 /* NOOP  */
 378 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 379 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 380 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 381 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 382 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 383
 384 #if BYTE_ORDER == BIG_ENDIAN
 385 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 386 #define NI_FQDN_FLAG_VALIDTTL           0x1
 387 #elif BYTE_ORDER == LITTLE_ENDIAN
 388 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 389 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 390 #endif
 391
 392 #ifdef NAME_LOOKUPS_04
 393 #if BYTE_ORDER == BIG_ENDIAN
 394 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 395 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 396 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 397 #define NI_NODEADDR_FLAG_ALL            0x8
 398 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 399 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 400 #elif BYTE_ORDER == LITTLE_ENDIAN
 401 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 402 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 403 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 404 #define NI_NODEADDR_FLAG_ALL            0x0800
 405 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 406 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 407 #endif
 408 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 409 #if BYTE_ORDER == BIG_ENDIAN
 410 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 411 #define NI_NODEADDR_FLAG_ALL            0x2
 412 #define NI_NODEADDR_FLAG_COMPAT         0x4
 413 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 414 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 415 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 416 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 417 #elif BYTE_ORDER == LITTLE_ENDIAN
 418 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 419 #define NI_NODEADDR_FLAG_ALL            0x0200
 420 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 421 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 422 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 423 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 424 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 425 #endif
 426 #endif
 427
 428 struct ni_reply_fqdn {
 429         u_int32_t ni_fqdn_ttl;  /* TTL */
 430         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 431         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 432 };
 433
 434 /*
 435  * Router Renumbering. as router-renum-08.txt
 436  */
 437 struct icmp6_router_renum {     /* router renumbering header */
 438         struct icmp6_hdr        rr_hdr;
 439         u_int8_t        rr_segnum;
 440         u_int8_t        rr_flags;
 441         u_int16_t       rr_maxdelay;
 442         u_int32_t       rr_reserved;
 443 };
 444
 445 #define ICMP6_RR_FLAGS_TEST             0x80
 446 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 447 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 448 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 449 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 450
 451 #define rr_type         rr_hdr.icmp6_type
 452 #define rr_code         rr_hdr.icmp6_code
 453 #define rr_cksum        rr_hdr.icmp6_cksum
 454 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 455
 456 struct rr_pco_match {           /* match prefix part */
 457         u_int8_t        rpm_code;
 458         u_int8_t        rpm_len;
 459         u_int8_t        rpm_ordinal;
 460         u_int8_t        rpm_matchlen;
 461         u_int8_t        rpm_minlen;
 462         u_int8_t        rpm_maxlen;
 463         u_int16_t       rpm_reserved;
 464         struct  in6_addr        rpm_prefix;
 465 };
 466
 467 #define RPM_PCO_ADD             1
 468 #define RPM_PCO_CHANGE          2
 469 #define RPM_PCO_SETGLOBAL       3
 470 #define RPM_PCO_MAX             4
 471
 472 struct rr_pco_use {             /* use prefix part */
 473         u_int8_t        rpu_uselen;
 474         u_int8_t        rpu_keeplen;
 475         u_int8_t        rpu_ramask;
 476         u_int8_t        rpu_raflags;
 477         u_int32_t       rpu_vltime;
 478         u_int32_t       rpu_pltime;
 479         u_int32_t       rpu_flags;
 480         struct  in6_addr rpu_prefix;
 481 };
 482 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 483 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 484
 485 #if BYTE_ORDER == BIG_ENDIAN
 486 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
 487 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
 488 #elif BYTE_ORDER == LITTLE_ENDIAN
 489 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
 490 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
 491 #endif
 492
 493 struct rr_result {              /* router renumbering result message */
 494         u_int16_t       rrr_flags;
 495         u_int8_t        rrr_ordinal;
 496         u_int8_t        rrr_matchedlen;
 497         u_int32_t       rrr_ifid;
 498         struct  in6_addr rrr_prefix;
 499 };
 500 #if BYTE_ORDER == BIG_ENDIAN
 501 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
 502 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
 503 #elif BYTE_ORDER == LITTLE_ENDIAN
 504 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
 505 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
 506 #endif
 507
 508 /*
 509  * icmp6 filter structures.
 510  */
 511
 512 struct icmp6_filter {
 513         u_int32_t icmp6_filt[8];
 514 };
 515
 516 #ifdef KERNEL
 517 #define ICMP6_FILTER_SETPASSALL(filterp) \
 518 do {                                                            \
 519         int i; u_char *p;                                       \
 520         p = (u_char *)filterp;                                  \
 521         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 522                 p[i] = 0xff;                                    \
 523 } while (0)
 524 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 525         bzero(filterp, sizeof(struct icmp6_filter))
 526 #else /* KERNEL */
 527 #define ICMP6_FILTER_SETPASSALL(filterp) \
 528         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 529 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 530         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 531 #endif /* KERNEL */
 532
 533 #define ICMP6_FILTER_SETPASS(type, filterp) \
 534         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 535 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 536         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 537 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 538         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 539 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 540         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 541
 542 /*
 543  * Variables related to this implementation
 544  * of the internet control message protocol version 6.
 545  */
 546 struct icmp6errstat {
 547         u_quad_t icp6errs_dst_unreach_noroute;
 548         u_quad_t icp6errs_dst_unreach_admin;
 549         u_quad_t icp6errs_dst_unreach_beyondscope;
 550         u_quad_t icp6errs_dst_unreach_addr;
 551         u_quad_t icp6errs_dst_unreach_noport;
 552         u_quad_t icp6errs_packet_too_big;
 553         u_quad_t icp6errs_time_exceed_transit;
 554         u_quad_t icp6errs_time_exceed_reassembly;
 555         u_quad_t icp6errs_paramprob_header;
 556         u_quad_t icp6errs_paramprob_nextheader;
 557         u_quad_t icp6errs_paramprob_option;
 558         u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
 559         u_quad_t icp6errs_unknown;
 560 };
 561
 562 struct icmp6stat {
 563 /* statistics related to icmp6 packets generated */
 564         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 565         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 566         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 567         u_quad_t icp6s_outhist[256];
 568 /* statistics related to input message processed */
 569         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 570         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 571         u_quad_t icp6s_checksum;        /* bad checksum */
 572         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 573         u_quad_t icp6s_reflect;         /* number of responses */
 574         u_quad_t icp6s_inhist[256];
 575         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 576         struct icmp6errstat icp6s_outerrhist;
 577 #define icp6s_odst_unreach_noroute \
 578         icp6s_outerrhist.icp6errs_dst_unreach_noroute
 579 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
 580 #define icp6s_odst_unreach_beyondscope \
 581         icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
 582 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
 583 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
 584 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
 585 #define icp6s_otime_exceed_transit \
 586         icp6s_outerrhist.icp6errs_time_exceed_transit
 587 #define icp6s_otime_exceed_reassembly \
 588         icp6s_outerrhist.icp6errs_time_exceed_reassembly
 589 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
 590 #define icp6s_oparamprob_nextheader \
 591         icp6s_outerrhist.icp6errs_paramprob_nextheader
 592 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
 593 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
 594 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
 595         u_quad_t icp6s_pmtuchg;         /* path MTU changes */
 596         u_quad_t icp6s_nd_badopt;       /* bad ND options */
 597         u_quad_t icp6s_badns;           /* bad neighbor solicitation */
 598         u_quad_t icp6s_badna;           /* bad neighbor advertisement */
 599         u_quad_t icp6s_badrs;           /* bad router advertisement */
 600         u_quad_t icp6s_badra;           /* bad router advertisement */
 601         u_quad_t icp6s_badredirect;     /* bad redirect message */
 602 };
 603
 604 /*
 605  * Names for ICMP sysctl objects
 606  */
 607 #define ICMPV6CTL_STATS         1
 608 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 609 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 610 #define ICMPV6CTL_ND6_PRUNE     6
 611 #define ICMPV6CTL_ND6_DELAY     8
 612 #define ICMPV6CTL_ND6_UMAXTRIES 9
 613 #define ICMPV6CTL_ND6_MMAXTRIES         10
 614 #define ICMPV6CTL_ND6_USELOOPBACK       11
 615 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 616 #define ICMPV6CTL_NODEINFO      13
 617 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
 618 #define ICMPV6CTL_ND6_MAXNUDHINT        15
 619 #define ICMPV6CTL_MTUDISC_HIWAT 16
 620 #define ICMPV6CTL_MTUDISC_LOWAT 17
 621 #define ICMPV6CTL_ND6_DEBUG     18
 622 #define ICMPV6CTL_ND6_DRLIST    19
 623 #define ICMPV6CTL_ND6_PRLIST    20
 624 #define ICMPV6CTL_MAXID         21
 625
 626 #ifdef KERNEL_PRIVATE
 627 #define ICMPV6CTL_NAMES { \
 628         { 0, 0 }, \
 629         { 0, 0 }, \
 630         { "rediraccept", CTLTYPE_INT }, \
 631         { "redirtimeout", CTLTYPE_INT }, \
 632         { 0, 0 }, \
 633         { 0, 0 }, \
 634         { "nd6_prune", CTLTYPE_INT }, \
 635         { 0, 0 }, \
 636         { "nd6_delay", CTLTYPE_INT }, \
 637         { "nd6_umaxtries", CTLTYPE_INT }, \
 638         { "nd6_mmaxtries", CTLTYPE_INT }, \
 639         { "nd6_useloopback", CTLTYPE_INT }, \
 640         { 0, 0 }, \
 641         { "nodeinfo", CTLTYPE_INT }, \
 642         { "errppslimit", CTLTYPE_INT }, \
 643         { "nd6_maxnudhint", CTLTYPE_INT }, \
 644         { "mtudisc_hiwat", CTLTYPE_INT }, \
 645         { "mtudisc_lowat", CTLTYPE_INT }, \
 646         { "nd6_debug", CTLTYPE_INT }, \
 647         { 0, 0 }, \
 648         { 0, 0 }, \
 649 }
 650
 651 #define RTF_PROBEMTU    RTF_PROTO1
 652
 653 # ifdef __STDC__
 654 struct  rtentry;
 655 struct  rttimer;
 656 struct  in6_multi;
 657 # endif
 658 void    icmp6_init(void);
 659 void    icmp6_paramerror(struct mbuf *, int);
 660 void    icmp6_error(struct mbuf *, int, int, int);
 661 int     icmp6_input(struct mbuf **, int *);
 662 void    icmp6_fasttimo(void);
 663 void    icmp6_reflect(struct mbuf *, size_t);
 664 void    icmp6_prepare(struct mbuf *);
 665 void    icmp6_redirect_input(struct mbuf *, int);
 666 void    icmp6_redirect_output(struct mbuf *, struct rtentry *);
 667
 668 struct  ip6ctlparam;
 669 void    icmp6_mtudisc_update(struct ip6ctlparam *, int);
 670
 671 /* XXX: is this the right place for these macros? */
 672 #define icmp6_ifstat_inc(ifp, tag) \
 673 do {                                                            \
 674         if ((ifp) && (ifp)->if_index <= if_index                        \
 675          && (ifp)->if_index < icmp6_ifstatmax                   \
 676          && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) {    \
 677                 icmp6_ifstat[(ifp)->if_index]->tag++;           \
 678         }                                                       \
 679 } while (0)
 680
 681 #define icmp6_ifoutstat_inc(ifp, type, code) \
 682 do { \
 683                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 684                 if (type < ICMP6_INFOMSG_MASK) \
 685                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 686                 switch(type) { \
 687                  case ICMP6_DST_UNREACH: \
 688                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 689                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 690                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 691                          break; \
 692                  case ICMP6_PACKET_TOO_BIG: \
 693                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 694                          break; \
 695                  case ICMP6_TIME_EXCEEDED: \
 696                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 697                          break; \
 698                  case ICMP6_PARAM_PROB: \
 699                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 700                          break; \
 701                  case ICMP6_ECHO_REQUEST: \
 702                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 703                          break; \
 704                  case ICMP6_ECHO_REPLY: \
 705                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 706                          break; \
 707                  case MLD6_LISTENER_QUERY: \
 708                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 709                          break; \
 710                  case MLD6_LISTENER_REPORT: \
 711                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 712                          break; \
 713                  case MLD6_LISTENER_DONE: \
 714                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 715                          break; \
 716                  case ND_ROUTER_SOLICIT: \
 717                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 718                          break; \
 719                  case ND_ROUTER_ADVERT: \
 720                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 721                          break; \
 722                  case ND_NEIGHBOR_SOLICIT: \
 723                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 724                          break; \
 725                  case ND_NEIGHBOR_ADVERT: \
 726                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 727                          break; \
 728                  case ND_REDIRECT: \
 729                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 730                          break; \
 731                 } \
 732 } while (0)
 733
 734 extern int      icmp6_rediraccept;      /* accept/process redirects */
 735 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 736 #endif KERNEL_PRIVATE
 737
 738 #endif /* !_NETINET_ICMP6_H_ */