bsd/netinet/icmp6.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*      $KAME: icmp6.h,v 1.9 2000/03/09 21:09:16 itojun Exp $   */
  23
  24 /*
  25  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  26  * All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. Neither the name of the project nor the names of its contributors
  37  *    may be used to endorse or promote products derived from this software
  38  *    without specific prior written permission.
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  */
  52
  53 /*
  54  * Copyright (c) 1982, 1986, 1993
  55  *      The Regents of the University of California.  All rights reserved.
  56  *
  57  * Redistribution and use in source and binary forms, with or without
  58  * modification, are permitted provided that the following conditions
  59  * are met:
  60  * 1. Redistributions of source code must retain the above copyright
  61  *    notice, this list of conditions and the following disclaimer.
  62  * 2. Redistributions in binary form must reproduce the above copyright
  63  *    notice, this list of conditions and the following disclaimer in the
  64  *    documentation and/or other materials provided with the distribution.
  65  * 3. All advertising materials mentioning features or use of this software
  66  *    must display the following acknowledgement:
  67  *      This product includes software developed by the University of
  68  *      California, Berkeley and its contributors.
  69  * 4. Neither the name of the University nor the names of its contributors
  70  *    may be used to endorse or promote products derived from this software
  71  *    without specific prior written permission.
  72  *
  73  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  74  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  75  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  76  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  77  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  78  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  79  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  80  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  81  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  82  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  83  * SUCH DAMAGE.
  84  *
  85  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  86  */
  87
  88 #ifndef _NETINET_ICMP6_H_
  89 #define _NETINET_ICMP6_H_
  90
  91 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
  92                                            - sizeof(struct icmp6_hdr) */
  93
  94 struct icmp6_hdr {
  95         u_int8_t        icmp6_type;     /* type field */
  96         u_int8_t        icmp6_code;     /* code field */
  97         u_int16_t       icmp6_cksum;    /* checksum field */
  98         union {
  99                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
 100                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
 101                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
 102         } icmp6_dataun;
 103 };
 104
 105 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
 106 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
 107 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
 108 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
 109 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
 110 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
 111 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
 112 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
 113
 114 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
 115 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 116 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 117 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 118
 119 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 120 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 121 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 122 #define MLD6_LISTENER_QUERY             130     /* multicast listener query */
 123 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 124 #define MLD6_LISTENER_REPORT            131     /* multicast listener report */
 125 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 126 #define MLD6_LISTENER_DONE              132     /* multicast listener done */
 127
 128 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 129 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 130 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 131 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 132 #define ND_REDIRECT                     137     /* redirect */
 133
 134 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 135
 136 #define ICMP6_WRUREQUEST                139     /* who are you request */
 137 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 138 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 139 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 140 #define ICMP6_NI_QUERY                  139     /* node information request */
 141 #define ICMP6_NI_REPLY                  140     /* node information reply */
 142
 143 /* The definitions below are experimental. TBA */
 144 #define MLD6_MTRACE_RESP                141     /* mtrace response(to sender) */
 145 #define MLD6_MTRACE                     142     /* mtrace messages */
 146
 147 #define ICMP6_MAXTYPE                   142
 148
 149 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 150 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 151 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 152 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 153 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 154 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 155
 156 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 157 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 158
 159 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 160 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 161 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 162
 163 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 164
 165 #define ICMP6_NI_SUCESS         0       /* node information successful reply */
 166 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 167 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 168
 169 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 170 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 171 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 172
 173 /* Used in kernel only */
 174 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 175 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 176
 177 /*
 178  * Multicast Listener Discovery
 179  */
 180 struct mld6_hdr {
 181         struct icmp6_hdr        mld6_hdr;
 182         struct in6_addr         mld6_addr; /* multicast address */
 183 };
 184
 185 #define mld6_type       mld6_hdr.icmp6_type
 186 #define mld6_code       mld6_hdr.icmp6_code
 187 #define mld6_cksum      mld6_hdr.icmp6_cksum
 188 #define mld6_maxdelay   mld6_hdr.icmp6_data16[0]
 189 #define mld6_reserved   mld6_hdr.icmp6_data16[1]
 190
 191 /*
 192  * Neighbor Discovery
 193  */
 194
 195 struct nd_router_solicit {      /* router solicitation */
 196         struct icmp6_hdr        nd_rs_hdr;
 197         /* could be followed by options */
 198 };
 199
 200 #define nd_rs_type      nd_rs_hdr.icmp6_type
 201 #define nd_rs_code      nd_rs_hdr.icmp6_code
 202 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 203 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 204
 205 struct nd_router_advert {       /* router advertisement */
 206         struct icmp6_hdr        nd_ra_hdr;
 207         u_int32_t               nd_ra_reachable;        /* reachable time */
 208         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 209         /* could be followed by options */
 210 };
 211
 212 #define nd_ra_type              nd_ra_hdr.icmp6_type
 213 #define nd_ra_code              nd_ra_hdr.icmp6_code
 214 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 215 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 216 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 217 #define ND_RA_FLAG_MANAGED      0x80
 218 #define ND_RA_FLAG_OTHER        0x40
 219 #define ND_RA_FLAG_HA           0x20
 220 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 221
 222 struct nd_neighbor_solicit {    /* neighbor solicitation */
 223         struct icmp6_hdr        nd_ns_hdr;
 224         struct in6_addr         nd_ns_target;   /*target address */
 225         /* could be followed by options */
 226 };
 227
 228 #define nd_ns_type              nd_ns_hdr.icmp6_type
 229 #define nd_ns_code              nd_ns_hdr.icmp6_code
 230 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 231 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 232
 233 struct nd_neighbor_advert {     /* neighbor advertisement */
 234         struct icmp6_hdr        nd_na_hdr;
 235         struct in6_addr         nd_na_target;   /* target address */
 236         /* could be followed by options */
 237 };
 238
 239 #define nd_na_type              nd_na_hdr.icmp6_type
 240 #define nd_na_code              nd_na_hdr.icmp6_code
 241 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 242 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 243 #if BYTE_ORDER == BIG_ENDIAN
 244 #define ND_NA_FLAG_ROUTER               0x80000000
 245 #define ND_NA_FLAG_SOLICITED            0x40000000
 246 #define ND_NA_FLAG_OVERRIDE             0x20000000
 247 #else
 248 #if BYTE_ORDER == LITTLE_ENDIAN
 249 #define ND_NA_FLAG_ROUTER               0x80
 250 #define ND_NA_FLAG_SOLICITED            0x40
 251 #define ND_NA_FLAG_OVERRIDE             0x20
 252 #endif
 253 #endif
 254
 255 struct nd_redirect {            /* redirect */
 256         struct icmp6_hdr        nd_rd_hdr;
 257         struct in6_addr         nd_rd_target;   /* target address */
 258         struct in6_addr         nd_rd_dst;      /* destination address */
 259         /* could be followed by options */
 260 };
 261
 262 #define nd_rd_type              nd_rd_hdr.icmp6_type
 263 #define nd_rd_code              nd_rd_hdr.icmp6_code
 264 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 265 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 266
 267 struct nd_opt_hdr {             /* Neighbor discovery option header */
 268         u_int8_t        nd_opt_type;
 269         u_int8_t        nd_opt_len;
 270         /* followed by option specific data*/
 271 };
 272
 273 #define ND_OPT_SOURCE_LINKADDR          1
 274 #define ND_OPT_TARGET_LINKADDR          2
 275 #define ND_OPT_PREFIX_INFORMATION       3
 276 #define ND_OPT_REDIRECTED_HEADER        4
 277 #define ND_OPT_MTU                      5
 278 #define ND_OPT_ADV_INTERVAL     7       /* MIPv6 */
 279 #define ND_OPT_HA_INFORMATION   8       /* MIPv6 */
 280
 281 struct nd_opt_prefix_info {     /* prefix information */
 282         u_int8_t        nd_opt_pi_type;
 283         u_int8_t        nd_opt_pi_len;
 284         u_int8_t        nd_opt_pi_prefix_len;
 285         u_int8_t        nd_opt_pi_flags_reserved;
 286         u_int32_t       nd_opt_pi_valid_time;
 287         u_int32_t       nd_opt_pi_preferred_time;
 288         u_int32_t       nd_opt_pi_reserved2;
 289         struct in6_addr nd_opt_pi_prefix;
 290 };
 291
 292 #define ND_OPT_PI_FLAG_ONLINK           0x80
 293 #define ND_OPT_PI_FLAG_AUTO             0x40
 294 #define ND_OPT_PI_FLAG_RTADDR           0x20
 295
 296 struct nd_opt_rd_hdr {          /* redirected header */
 297         u_int8_t        nd_opt_rh_type;
 298         u_int8_t        nd_opt_rh_len;
 299         u_int16_t       nd_opt_rh_reserved1;
 300         u_int32_t       nd_opt_rh_reserved2;
 301         /* followed by IP header and data */
 302 };
 303
 304 struct nd_opt_mtu {             /* MTU option */
 305         u_int8_t        nd_opt_mtu_type;
 306         u_int8_t        nd_opt_mtu_len;
 307         u_int16_t       nd_opt_mtu_reserved;
 308         u_int32_t       nd_opt_mtu_mtu;
 309 };
 310
 311 struct nd_opt_advint {          /* Advertisement Interval option (MIPv6) */
 312         u_int8_t        nd_opt_int_type;
 313         u_int8_t        nd_opt_int_len;
 314         u_int16_t       nd_opt_int_reserved;
 315         u_int32_t       nd_opt_int_interval;
 316 };
 317
 318 struct nd_opt_hai {             /* Home Agent Information option (MIPv6) */
 319         u_int8_t        nd_opt_hai_type;
 320         u_int8_t        nd_opt_hai_len;
 321         u_int16_t       nd_opt_hai_reserved;
 322         u_int16_t       nd_opt_hai_pref;
 323         u_int16_t       nd_opt_hai_lifetime;
 324 };
 325
 326 /*
 327  * icmp6 namelookup
 328  */
 329
 330 struct icmp6_namelookup {
 331         struct icmp6_hdr        icmp6_nl_hdr;
 332         u_int8_t        icmp6_nl_nonce[8];
 333         u_int32_t       icmp6_nl_ttl;
 334 #if 0
 335         u_int8_t        icmp6_nl_len;
 336         u_int8_t        icmp6_nl_name[3];
 337 #endif
 338         /* could be followed by options */
 339 };
 340
 341 /*
 342  * icmp6 node information
 343  */
 344 struct icmp6_nodeinfo {
 345         struct icmp6_hdr icmp6_ni_hdr;
 346         u_int8_t icmp6_ni_nonce[8];
 347         /* could be followed by reply data */
 348 };
 349
 350 #define ni_type         icmp6_ni_hdr.icmp6_type
 351 #define ni_code         icmp6_ni_hdr.icmp6_code
 352 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 353 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 354 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 355
 356
 357 #define NI_QTYPE_NOOP           0 /* NOOP  */
 358 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 359 #define NI_QTYPE_FQDN           2 /* FQDN */
 360 #define NI_QTYPE_NODEADDR       3 /* Node Addresses. XXX: spec says 2, but it may be a typo... */
 361
 362 #if BYTE_ORDER == BIG_ENDIAN
 363 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 364 #define NI_FQDN_FLAG_VALIDTTL           0x1
 365 #elif BYTE_ORDER == LITTLE_ENDIAN
 366 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 367 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 368 #endif
 369
 370 #ifdef NAME_LOOKUPS_04
 371 #if BYTE_ORDER == BIG_ENDIAN
 372 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 373 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 374 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 375 #define NI_NODEADDR_FLAG_ALL            0x8
 376 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 377 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 378 #elif BYTE_ORDER == LITTLE_ENDIAN
 379 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 380 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 381 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 382 #define NI_NODEADDR_FLAG_ALL            0x0800
 383 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 384 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 385 #endif
 386 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 387 #if BYTE_ORDER == BIG_ENDIAN
 388 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 389 #define NI_NODEADDR_FLAG_ALL            0x2
 390 #define NI_NODEADDR_FLAG_COMPAT         0x4
 391 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 392 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 393 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 394 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 395 #elif BYTE_ORDER == LITTLE_ENDIAN
 396 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 397 #define NI_NODEADDR_FLAG_ALL            0x0200
 398 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 399 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 400 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 401 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 402 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 403 #endif
 404 #endif
 405
 406 struct ni_reply_fqdn {
 407         u_int32_t ni_fqdn_ttl;  /* TTL */
 408         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 409         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 410 };
 411
 412 /*
 413  * Router Renumbering. as router-renum-08.txt
 414  */
 415 #if BYTE_ORDER == BIG_ENDIAN /* net byte order */
 416 struct icmp6_router_renum {     /* router renumbering header */
 417         struct icmp6_hdr        rr_hdr;
 418         u_int8_t                rr_segnum;
 419         u_int8_t                rr_test : 1;
 420         u_int8_t                rr_reqresult : 1;
 421         u_int8_t                rr_forceapply : 1;
 422         u_int8_t                rr_specsite : 1;
 423         u_int8_t                rr_prevdone : 1;
 424         u_int8_t                rr_flags_reserved : 3;
 425         u_int16_t               rr_maxdelay;
 426         u_int32_t               rr_reserved;
 427 };
 428 #elif BYTE_ORDER == LITTLE_ENDIAN
 429 struct icmp6_router_renum {     /* router renumbering header */
 430         struct icmp6_hdr        rr_hdr;
 431         u_int8_t                rr_segnum;
 432         u_int8_t                rr_flags_reserved : 3;
 433         u_int8_t                rr_prevdone : 1;
 434         u_int8_t                rr_specsite : 1;
 435         u_int8_t                rr_forceapply : 1;
 436         u_int8_t                rr_reqresult : 1;
 437         u_int8_t                rr_test : 1;
 438         u_int16_t               rr_maxdelay;
 439         u_int32_t               rr_reserved;
 440 };
 441 #endif /* BYTE_ORDER */
 442
 443 #define rr_type                 rr_hdr.icmp6_type
 444 #define rr_code                 rr_hdr.icmp6_code
 445 #define rr_cksum                rr_hdr.icmp6_cksum
 446 #define rr_seqnum               rr_hdr.icmp6_data32[0]
 447
 448 struct rr_pco_match {           /* match prefix part */
 449         u_int8_t        rpm_code;
 450         u_int8_t        rpm_len;
 451         u_int8_t        rpm_ordinal;
 452         u_int8_t        rpm_matchlen;
 453         u_int8_t        rpm_minlen;
 454         u_int8_t        rpm_maxlen;
 455         u_int16_t       rpm_reserved;
 456         struct in6_addr rpm_prefix;
 457 };
 458
 459 #define RPM_PCO_ADD             1
 460 #define RPM_PCO_CHANGE          2
 461 #define RPM_PCO_SETGLOBAL       3
 462 #define RPM_PCO_MAX             4
 463
 464 #if BYTE_ORDER == BIG_ENDIAN /* net byte order */
 465 struct rr_pco_use {             /* use prefix part */
 466         u_int8_t        rpu_uselen;
 467         u_int8_t        rpu_keeplen;
 468         u_int8_t        rpu_mask_onlink : 1;
 469         u_int8_t        rpu_mask_autonomous : 1;
 470         u_int8_t        rpu_mask_reserved : 6;
 471         u_int8_t        rpu_onlink : 1;
 472         u_int8_t        rpu_autonomous : 1;
 473         u_int8_t        rpu_raflags_reserved : 6;
 474         u_int32_t       rpu_vltime;
 475         u_int32_t       rpu_pltime;
 476         u_int32_t       rpu_decr_vltime : 1;
 477         u_int32_t       rpu_decr_pltime : 1;
 478         u_int32_t       rpu_flags_reserved : 6;
 479         u_int32_t       rpu_reserved : 24;
 480         struct in6_addr rpu_prefix;
 481 };
 482 #elif BYTE_ORDER == LITTLE_ENDIAN
 483 struct rr_pco_use {             /* use prefix part */
 484         u_int8_t        rpu_uselen;
 485         u_int8_t        rpu_keeplen;
 486         u_int8_t        rpu_mask_reserved : 6;
 487         u_int8_t        rpu_mask_autonomous : 1;
 488         u_int8_t        rpu_mask_onlink : 1;
 489         u_int8_t        rpu_raflags_reserved : 6;
 490         u_int8_t        rpu_autonomous : 1;
 491         u_int8_t        rpu_onlink : 1;
 492         u_int32_t       rpu_vltime;
 493         u_int32_t       rpu_pltime;
 494         u_int32_t       rpu_flags_reserved : 6;
 495         u_int32_t       rpu_decr_pltime : 1;
 496         u_int32_t       rpu_decr_vltime : 1;
 497         u_int32_t       rpu_reserved : 24;
 498         struct in6_addr rpu_prefix;
 499 };
 500 #endif /* BYTE_ORDER */
 501
 502 #if BYTE_ORDER == BIG_ENDIAN /* net byte order */
 503 struct rr_result {              /* router renumbering result message */
 504         u_int8_t        rrr_reserved;
 505         u_int8_t        rrr_flags_reserved : 6;
 506         u_int8_t        rrr_outofbound : 1;
 507         u_int8_t        rrr_forbidden : 1;
 508         u_int8_t        rrr_ordinal;
 509         u_int8_t        rrr_matchedlen;
 510         u_int32_t       rrr_ifid;
 511         struct in6_addr rrr_prefix;
 512 };
 513 #elif BYTE_ORDER == LITTLE_ENDIAN
 514 struct rr_result {              /* router renumbering result message */
 515         u_int8_t        rrr_reserved;
 516         u_int8_t        rrr_forbidden : 1;
 517         u_int8_t        rrr_outofbound : 1;
 518         u_int8_t        rrr_flags_reserved : 6;
 519         u_int8_t        rrr_ordinal;
 520         u_int8_t        rrr_matchedlen;
 521         u_int32_t       rrr_ifid;
 522         struct in6_addr rrr_prefix;
 523 };
 524 #endif /* BYTE_ORDER */
 525
 526 /*
 527  * icmp6 filter structures.
 528  */
 529
 530 struct icmp6_filter {
 531         u_int32_t icmp6_filt[8];
 532 };
 533
 534 #ifdef KERNEL
 535 #define ICMP6_FILTER_SETPASSALL(filterp) \
 536 do {                                                            \
 537         int i; u_char *p;                                       \
 538         p = (u_char *)filterp;                                  \
 539         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 540                 p[i] = 0xff;                                    \
 541 } while (0)
 542 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 543         bzero(filterp, sizeof(struct icmp6_filter))
 544 #else /* KERNEL */
 545 #define ICMP6_FILTER_SETPASSALL(filterp) \
 546         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 547 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 548         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 549 #endif /* KERNEL */
 550
 551 #define ICMP6_FILTER_SETPASS(type, filterp) \
 552         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 553 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 554         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 555 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 556         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 557 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 558         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 559
 560 /*
 561  * Variables related to this implementation
 562  * of the internet control message protocol version 6.
 563  */
 564 struct icmp6stat {
 565 /* statistics related to icmp6 packets generated */
 566         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 567         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 568         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 569         u_quad_t icp6s_outhist[256];
 570 /* statistics related to input message processed */
 571         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 572         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 573         u_quad_t icp6s_checksum;        /* bad checksum */
 574         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 575         u_quad_t icp6s_reflect;         /* number of responses */
 576         u_quad_t icp6s_inhist[256];
 577         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 578 };
 579
 580 /*
 581  * Names for ICMP sysctl objects
 582  */
 583 #define ICMPV6CTL_STATS         1
 584 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 585 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 586 #define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */
 587 #define ICMPV6CTL_ND6_PRUNE     6
 588 #define ICMPV6CTL_ND6_DELAY     8
 589 #define ICMPV6CTL_ND6_UMAXTRIES 9
 590 #define ICMPV6CTL_ND6_MMAXTRIES         10
 591 #define ICMPV6CTL_ND6_USELOOPBACK       11
 592 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 593 #define ICMPV6CTL_NODEINFO      13
 594 #define ICMPV6CTL_MAXID         14
 595
 596 #define ICMPV6CTL_NAMES { \
 597         { 0, 0 }, \
 598         { 0, 0 }, \
 599         { "rediraccept", CTLTYPE_INT }, \
 600         { "redirtimeout", CTLTYPE_INT }, \
 601         { 0, 0 }, \
 602         { "errratelimit", CTLTYPE_INT }, \
 603         { "nd6_prune", CTLTYPE_INT }, \
 604         { 0, 0 }, \
 605         { "nd6_delay", CTLTYPE_INT }, \
 606         { "nd6_umaxtries", CTLTYPE_INT }, \
 607         { "nd6_mmaxtries", CTLTYPE_INT }, \
 608         { "nd6_useloopback", CTLTYPE_INT }, \
 609         { 0, 0 }, \
 610         { "nodeinfo", CTLTYPE_INT }, \
 611 }
 612
 613 #ifdef __bsdi__
 614 #define ICMPV6CTL_VARS { \
 615         0, \
 616         0, \
 617         &icmp6_rediraccept,   \
 618         &icmp6_redirtimeout,  \
 619         0, \
 620         0, \
 621         &icmp6errratelim, \
 622         &nd6_prune,     \
 623         0, \
 624         &nd6_delay,     \
 625         &nd6_umaxtries, \
 626         &nd6_mmaxtries, \
 627         &nd6_useloopback, \
 628         0, \
 629         &icmp6_nodeinfo, \
 630 }
 631 #endif
 632
 633 #define RTF_PROBEMTU    RTF_PROTO1
 634
 635 #ifdef KERNEL
 636 # ifdef __STDC__
 637 struct  rtentry;
 638 struct  rttimer;
 639 struct  in6_multi;
 640 # endif
 641 void    icmp6_init __P((void));
 642 void    icmp6_paramerror __P((struct mbuf *, int));
 643 void    icmp6_error __P((struct mbuf *, int, int, int));
 644 int     icmp6_input __P((struct mbuf **, int *, int));
 645 void    icmp6_fasttimo __P((void));
 646 void    icmp6_reflect __P((struct mbuf *, size_t));
 647 void    icmp6_prepare __P((struct mbuf *));
 648 void    icmp6_redirect_input __P((struct mbuf *, int));
 649 void    icmp6_redirect_output __P((struct mbuf *, struct rtentry *));
 650 #ifdef __bsdi__
 651 int     icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
 652 void    icmp6_mtuexpire __P((struct rtentry *, struct rttimer *));
 653 #endif /*__bsdi__*/
 654 #if defined(__NetBSD__) || defined(__OpenBSD__)
 655 int     icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
 656 #endif
 657
 658 /* XXX: is this the right place for these macros? */
 659 #define icmp6_ifstat_inc(ifp, tag) \
 660 do {                                                            \
 661         if ((ifp) && (ifp)->if_index <= if_index                        \
 662          && (ifp)->if_index < icmp6_ifstatmax                   \
 663          && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) {    \
 664                 icmp6_ifstat[(ifp)->if_index]->tag++;           \
 665         }                                                       \
 666 } while (0)
 667
 668 #define icmp6_ifoutstat_inc(ifp, type, code) \
 669 do { \
 670                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 671                 if (type < ICMP6_INFOMSG_MASK) \
 672                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 673                 switch(type) { \
 674                  case ICMP6_DST_UNREACH: \
 675                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 676                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 677                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 678                          break; \
 679                  case ICMP6_PACKET_TOO_BIG: \
 680                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 681                          break; \
 682                  case ICMP6_TIME_EXCEEDED: \
 683                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 684                          break; \
 685                  case ICMP6_PARAM_PROB: \
 686                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 687                          break; \
 688                  case ICMP6_ECHO_REQUEST: \
 689                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 690                          break; \
 691                  case ICMP6_ECHO_REPLY: \
 692                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 693                          break; \
 694                  case MLD6_LISTENER_QUERY: \
 695                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 696                          break; \
 697                  case MLD6_LISTENER_REPORT: \
 698                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 699                          break; \
 700                  case MLD6_LISTENER_DONE: \
 701                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 702                          break; \
 703                  case ND_ROUTER_SOLICIT: \
 704                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 705                          break; \
 706                  case ND_ROUTER_ADVERT: \
 707                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 708                          break; \
 709                  case ND_NEIGHBOR_SOLICIT: \
 710                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 711                          break; \
 712                  case ND_NEIGHBOR_ADVERT: \
 713                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 714                          break; \
 715                  case ND_REDIRECT: \
 716                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 717                          break; \
 718                 } \
 719 } while (0)
 720
 721 extern int      icmp6_rediraccept;      /* accept/process redirects */
 722 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 723 #endif /* KERNEL */
 724
 725 #endif /* !_NETINET_ICMP6_H_ */