bsd/netinet/icmp6.h

   1 /*
   2  * Copyright (c) 2000,2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_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 License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*      $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $  */
  29
  30 /*
  31  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  32  * All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. Neither the name of the project nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  */
  58
  59 /*
  60  * Copyright (c) 1982, 1986, 1993
  61  *      The Regents of the University of California.  All rights reserved.
  62  *
  63  * Redistribution and use in source and binary forms, with or without
  64  * modification, are permitted provided that the following conditions
  65  * are met:
  66  * 1. Redistributions of source code must retain the above copyright
  67  *    notice, this list of conditions and the following disclaimer.
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in the
  70  *    documentation and/or other materials provided with the distribution.
  71  * 3. All advertising materials mentioning features or use of this software
  72  *    must display the following acknowledgement:
  73  *      This product includes software developed by the University of
  74  *      California, Berkeley and its contributors.
  75  * 4. Neither the name of the University nor the names of its contributors
  76  *    may be used to endorse or promote products derived from this software
  77  *    without specific prior written permission.
  78  *
  79  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  80  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  81  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  82  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  83  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  84  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  85  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  86  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  87  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  88  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  89  * SUCH DAMAGE.
  90  *
  91  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  92  */
  93
  94 #ifndef _NETINET_ICMP6_H_
  95 #define _NETINET_ICMP6_H_
  96 #include <sys/appleapiopts.h>
  97
  98 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
  99                                            - sizeof(struct icmp6_hdr) */
 100
 101 struct icmp6_hdr {
 102         u_int8_t        icmp6_type;     /* type field */
 103         u_int8_t        icmp6_code;     /* code field */
 104         u_int16_t       icmp6_cksum;    /* checksum field */
 105         union {
 106                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
 107                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
 108                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
 109         } icmp6_dataun;
 110 };
 111
 112 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
 113 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
 114 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
 115 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
 116 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
 117 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
 118 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
 119 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
 120
 121 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
 122 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 123 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 124 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 125
 126 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 127 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 128 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 129 #define MLD6_LISTENER_QUERY             130     /* multicast listener query */
 130 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 131 #define MLD6_LISTENER_REPORT            131     /* multicast listener report */
 132 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 133 #define MLD6_LISTENER_DONE              132     /* multicast listener done */
 134
 135 #ifndef KERNEL
 136 #define MLD_LISTENER_QUERY              MLD6_LISTENER_QUERY
 137 #define MLD_LISTENER_REPORT             MLD6_LISTENER_REPORT
 138 #define MLD_LISTENER_DONE               MLD6_LISTENER_DONE
 139 #endif /* !KERNEL */
 140
 141 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 142 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 143 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 144 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 145 #define ND_REDIRECT                     137     /* redirect */
 146
 147 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 148
 149 #define ICMP6_WRUREQUEST                139     /* who are you request */
 150 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 151 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 152 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 153 #define ICMP6_NI_QUERY                  139     /* node information request */
 154 #define ICMP6_NI_REPLY                  140     /* node information reply */
 155
 156 /* The definitions below are experimental. TBA */
 157 #define MLD6_MTRACE_RESP                200     /* mtrace response(to sender) */
 158 #define MLD6_MTRACE                     201     /* mtrace messages */
 159
 160 #ifndef KERNEL
 161 #define MLD_MTRACE_RESP                 MLD6_MTRACE_RESP
 162 #define MLD_MTRACE                      MLD6_MTRACE
 163 #endif /* !KERNEL */
 164
 165 #define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */
 166 #define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */
 167
 168 #define ICMP6_MAXTYPE                   203
 169
 170 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 171 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 172 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 173 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 174 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 175 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 176
 177 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 178 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 179
 180 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 181 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 182 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 183
 184 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 185
 186 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 187 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 188 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 189
 190 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 191 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 192 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 193
 194 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 195 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 196 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 197
 198 /* Used in kernel only */
 199 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 200 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 201
 202 /*
 203  * Multicast Listener Discovery
 204  */
 205 struct mld6_hdr {
 206         struct icmp6_hdr        mld6_hdr;
 207         struct in6_addr         mld6_addr; /* multicast address */
 208 };
 209
 210 #define mld6_type       mld6_hdr.icmp6_type
 211 #define mld6_code       mld6_hdr.icmp6_code
 212 #define mld6_cksum      mld6_hdr.icmp6_cksum
 213 #define mld6_maxdelay   mld6_hdr.icmp6_data16[0]
 214 #define mld6_reserved   mld6_hdr.icmp6_data16[1]
 215
 216 /*
 217  * Neighbor Discovery
 218  */
 219
 220 struct nd_router_solicit {      /* router solicitation */
 221         struct icmp6_hdr        nd_rs_hdr;
 222         /* could be followed by options */
 223 };
 224
 225 #define nd_rs_type      nd_rs_hdr.icmp6_type
 226 #define nd_rs_code      nd_rs_hdr.icmp6_code
 227 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 228 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 229
 230 struct nd_router_advert {       /* router advertisement */
 231         struct icmp6_hdr        nd_ra_hdr;
 232         u_int32_t               nd_ra_reachable;        /* reachable time */
 233         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 234         /* could be followed by options */
 235 };
 236
 237 #define nd_ra_type              nd_ra_hdr.icmp6_type
 238 #define nd_ra_code              nd_ra_hdr.icmp6_code
 239 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 240 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 241 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 242 #define ND_RA_FLAG_MANAGED      0x80
 243 #define ND_RA_FLAG_OTHER        0x40
 244 #define ND_RA_FLAG_HA           0x20
 245
 246 /*
 247  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 248  * These are non-standard definitions.
 249  */
 250 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 251
 252 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 253 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 254 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 255 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 256
 257 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 258
 259 struct nd_neighbor_solicit {    /* neighbor solicitation */
 260         struct icmp6_hdr        nd_ns_hdr;
 261         struct in6_addr         nd_ns_target;   /*target address */
 262         /* could be followed by options */
 263 };
 264
 265 #define nd_ns_type              nd_ns_hdr.icmp6_type
 266 #define nd_ns_code              nd_ns_hdr.icmp6_code
 267 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 268 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 269
 270 struct nd_neighbor_advert {     /* neighbor advertisement */
 271         struct icmp6_hdr        nd_na_hdr;
 272         struct in6_addr         nd_na_target;   /* target address */
 273         /* could be followed by options */
 274 };
 275
 276 #define nd_na_type              nd_na_hdr.icmp6_type
 277 #define nd_na_code              nd_na_hdr.icmp6_code
 278 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 279 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 280 #if BYTE_ORDER == BIG_ENDIAN
 281 #define ND_NA_FLAG_ROUTER               0x80000000
 282 #define ND_NA_FLAG_SOLICITED            0x40000000
 283 #define ND_NA_FLAG_OVERRIDE             0x20000000
 284 #else
 285 #if BYTE_ORDER == LITTLE_ENDIAN
 286 #define ND_NA_FLAG_ROUTER               0x80
 287 #define ND_NA_FLAG_SOLICITED            0x40
 288 #define ND_NA_FLAG_OVERRIDE             0x20
 289 #endif
 290 #endif
 291
 292 struct nd_redirect {            /* redirect */
 293         struct icmp6_hdr        nd_rd_hdr;
 294         struct in6_addr         nd_rd_target;   /* target address */
 295         struct in6_addr         nd_rd_dst;      /* destination address */
 296         /* could be followed by options */
 297 };
 298
 299 #define nd_rd_type              nd_rd_hdr.icmp6_type
 300 #define nd_rd_code              nd_rd_hdr.icmp6_code
 301 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 302 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 303
 304 struct nd_opt_hdr {             /* Neighbor discovery option header */
 305         u_int8_t        nd_opt_type;
 306         u_int8_t        nd_opt_len;
 307         /* followed by option specific data*/
 308 };
 309
 310 #define ND_OPT_SOURCE_LINKADDR          1
 311 #define ND_OPT_TARGET_LINKADDR          2
 312 #define ND_OPT_PREFIX_INFORMATION       3
 313 #define ND_OPT_REDIRECTED_HEADER        4
 314 #define ND_OPT_MTU                      5
 315
 316 #define ND_OPT_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 317
 318 struct nd_opt_prefix_info {     /* prefix information */
 319         u_int8_t        nd_opt_pi_type;
 320         u_int8_t        nd_opt_pi_len;
 321         u_int8_t        nd_opt_pi_prefix_len;
 322         u_int8_t        nd_opt_pi_flags_reserved;
 323         u_int32_t       nd_opt_pi_valid_time;
 324         u_int32_t       nd_opt_pi_preferred_time;
 325         u_int32_t       nd_opt_pi_reserved2;
 326         struct in6_addr nd_opt_pi_prefix;
 327 };
 328
 329 #define ND_OPT_PI_FLAG_ONLINK           0x80
 330 #define ND_OPT_PI_FLAG_AUTO             0x40
 331
 332 struct nd_opt_rd_hdr {          /* redirected header */
 333         u_int8_t        nd_opt_rh_type;
 334         u_int8_t        nd_opt_rh_len;
 335         u_int16_t       nd_opt_rh_reserved1;
 336         u_int32_t       nd_opt_rh_reserved2;
 337         /* followed by IP header and data */
 338 };
 339
 340 struct nd_opt_mtu {             /* MTU option */
 341         u_int8_t        nd_opt_mtu_type;
 342         u_int8_t        nd_opt_mtu_len;
 343         u_int16_t       nd_opt_mtu_reserved;
 344         u_int32_t       nd_opt_mtu_mtu;
 345 };
 346
 347 struct nd_opt_route_info {      /* route info */
 348         u_int8_t        nd_opt_rti_type;
 349         u_int8_t        nd_opt_rti_len;
 350         u_int8_t        nd_opt_rti_prefixlen;
 351         u_int8_t        nd_opt_rti_flags;
 352         u_int32_t       nd_opt_rti_lifetime;
 353         /* followed by prefix */
 354 };
 355
 356 /*
 357  * icmp6 namelookup
 358  */
 359
 360 struct icmp6_namelookup {
 361         struct icmp6_hdr        icmp6_nl_hdr;
 362         u_int8_t        icmp6_nl_nonce[8];
 363         int32_t         icmp6_nl_ttl;
 364 #if 0
 365         u_int8_t        icmp6_nl_len;
 366         u_int8_t        icmp6_nl_name[3];
 367 #endif
 368         /* could be followed by options */
 369 };
 370
 371 /*
 372  * icmp6 node information
 373  */
 374 struct icmp6_nodeinfo {
 375         struct icmp6_hdr icmp6_ni_hdr;
 376         u_int8_t icmp6_ni_nonce[8];
 377         /* could be followed by reply data */
 378 };
 379
 380 #define ni_type         icmp6_ni_hdr.icmp6_type
 381 #define ni_code         icmp6_ni_hdr.icmp6_code
 382 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 383 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 384 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 385
 386 #define NI_QTYPE_NOOP           0 /* NOOP  */
 387 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 388 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 389 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 390 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 391 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 392
 393 #if BYTE_ORDER == BIG_ENDIAN
 394 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 395 #define NI_FQDN_FLAG_VALIDTTL           0x1
 396 #elif BYTE_ORDER == LITTLE_ENDIAN
 397 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 398 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 399 #endif
 400
 401 #ifdef NAME_LOOKUPS_04
 402 #if BYTE_ORDER == BIG_ENDIAN
 403 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 404 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 405 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 406 #define NI_NODEADDR_FLAG_ALL            0x8
 407 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 408 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 409 #elif BYTE_ORDER == LITTLE_ENDIAN
 410 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 411 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 412 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 413 #define NI_NODEADDR_FLAG_ALL            0x0800
 414 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 415 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 416 #endif
 417 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 418 #if BYTE_ORDER == BIG_ENDIAN
 419 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 420 #define NI_NODEADDR_FLAG_ALL            0x2
 421 #define NI_NODEADDR_FLAG_COMPAT         0x4
 422 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 423 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 424 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 425 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 426 #elif BYTE_ORDER == LITTLE_ENDIAN
 427 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 428 #define NI_NODEADDR_FLAG_ALL            0x0200
 429 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 430 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 431 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 432 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 433 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 434 #endif
 435 #endif
 436
 437 struct ni_reply_fqdn {
 438         u_int32_t ni_fqdn_ttl;  /* TTL */
 439         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 440         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 441 };
 442
 443 /*
 444  * Router Renumbering. as router-renum-08.txt
 445  */
 446 struct icmp6_router_renum {     /* router renumbering header */
 447         struct icmp6_hdr        rr_hdr;
 448         u_int8_t        rr_segnum;
 449         u_int8_t        rr_flags;
 450         u_int16_t       rr_maxdelay;
 451         u_int32_t       rr_reserved;
 452 };
 453
 454 #define ICMP6_RR_FLAGS_TEST             0x80
 455 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 456 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 457 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 458 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 459
 460 #define rr_type         rr_hdr.icmp6_type
 461 #define rr_code         rr_hdr.icmp6_code
 462 #define rr_cksum        rr_hdr.icmp6_cksum
 463 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 464
 465 struct rr_pco_match {           /* match prefix part */
 466         u_int8_t        rpm_code;
 467         u_int8_t        rpm_len;
 468         u_int8_t        rpm_ordinal;
 469         u_int8_t        rpm_matchlen;
 470         u_int8_t        rpm_minlen;
 471         u_int8_t        rpm_maxlen;
 472         u_int16_t       rpm_reserved;
 473         struct  in6_addr        rpm_prefix;
 474 };
 475
 476 #define RPM_PCO_ADD             1
 477 #define RPM_PCO_CHANGE          2
 478 #define RPM_PCO_SETGLOBAL       3
 479 #define RPM_PCO_MAX             4
 480
 481 struct rr_pco_use {             /* use prefix part */
 482         u_int8_t        rpu_uselen;
 483         u_int8_t        rpu_keeplen;
 484         u_int8_t        rpu_ramask;
 485         u_int8_t        rpu_raflags;
 486         u_int32_t       rpu_vltime;
 487         u_int32_t       rpu_pltime;
 488         u_int32_t       rpu_flags;
 489         struct  in6_addr rpu_prefix;
 490 };
 491 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 492 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 493
 494 #if BYTE_ORDER == BIG_ENDIAN
 495 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
 496 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
 497 #elif BYTE_ORDER == LITTLE_ENDIAN
 498 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
 499 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
 500 #endif
 501
 502 struct rr_result {              /* router renumbering result message */
 503         u_int16_t       rrr_flags;
 504         u_int8_t        rrr_ordinal;
 505         u_int8_t        rrr_matchedlen;
 506         u_int32_t       rrr_ifid;
 507         struct  in6_addr rrr_prefix;
 508 };
 509 #if BYTE_ORDER == BIG_ENDIAN
 510 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
 511 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
 512 #elif BYTE_ORDER == LITTLE_ENDIAN
 513 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
 514 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
 515 #endif
 516
 517 /*
 518  * icmp6 filter structures.
 519  */
 520
 521 struct icmp6_filter {
 522         u_int32_t icmp6_filt[8];
 523 };
 524
 525 #ifdef KERNEL
 526 #define ICMP6_FILTER_SETPASSALL(filterp) \
 527 do {                                                            \
 528         int i; u_char *ptr;                                     \
 529         ptr = (u_char *)filterp;                                        \
 530         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 531                 ptr[i] = 0xff;                                  \
 532 } while (0)
 533 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 534         bzero(filterp, sizeof(struct icmp6_filter))
 535 #else /* KERNEL */
 536 #define ICMP6_FILTER_SETPASSALL(filterp) \
 537         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 538 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 539         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 540 #endif /* KERNEL */
 541
 542 #define ICMP6_FILTER_SETPASS(type, filterp) \
 543         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 544 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 545         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 546 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 547         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 548 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 549         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 550
 551 /*
 552  * Variables related to this implementation
 553  * of the internet control message protocol version 6.
 554  */
 555 struct icmp6errstat {
 556         u_quad_t icp6errs_dst_unreach_noroute;
 557         u_quad_t icp6errs_dst_unreach_admin;
 558         u_quad_t icp6errs_dst_unreach_beyondscope;
 559         u_quad_t icp6errs_dst_unreach_addr;
 560         u_quad_t icp6errs_dst_unreach_noport;
 561         u_quad_t icp6errs_packet_too_big;
 562         u_quad_t icp6errs_time_exceed_transit;
 563         u_quad_t icp6errs_time_exceed_reassembly;
 564         u_quad_t icp6errs_paramprob_header;
 565         u_quad_t icp6errs_paramprob_nextheader;
 566         u_quad_t icp6errs_paramprob_option;
 567         u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
 568         u_quad_t icp6errs_unknown;
 569 };
 570
 571 struct icmp6stat {
 572 /* statistics related to icmp6 packets generated */
 573         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 574         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 575         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 576         u_quad_t icp6s_outhist[256];
 577 /* statistics related to input message processed */
 578         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 579         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 580         u_quad_t icp6s_checksum;        /* bad checksum */
 581         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 582         u_quad_t icp6s_reflect;         /* number of responses */
 583         u_quad_t icp6s_inhist[256];
 584         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 585         struct icmp6errstat icp6s_outerrhist;
 586 #define icp6s_odst_unreach_noroute \
 587         icp6s_outerrhist.icp6errs_dst_unreach_noroute
 588 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
 589 #define icp6s_odst_unreach_beyondscope \
 590         icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
 591 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
 592 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
 593 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
 594 #define icp6s_otime_exceed_transit \
 595         icp6s_outerrhist.icp6errs_time_exceed_transit
 596 #define icp6s_otime_exceed_reassembly \
 597         icp6s_outerrhist.icp6errs_time_exceed_reassembly
 598 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
 599 #define icp6s_oparamprob_nextheader \
 600         icp6s_outerrhist.icp6errs_paramprob_nextheader
 601 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
 602 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
 603 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
 604         u_quad_t icp6s_pmtuchg;         /* path MTU changes */
 605         u_quad_t icp6s_nd_badopt;       /* bad ND options */
 606         u_quad_t icp6s_badns;           /* bad neighbor solicitation */
 607         u_quad_t icp6s_badna;           /* bad neighbor advertisement */
 608         u_quad_t icp6s_badrs;           /* bad router advertisement */
 609         u_quad_t icp6s_badra;           /* bad router advertisement */
 610         u_quad_t icp6s_badredirect;     /* bad redirect message */
 611 };
 612
 613 /*
 614  * Names for ICMP sysctl objects
 615  */
 616 #define ICMPV6CTL_STATS         1
 617 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 618 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 619 #define ICMPV6CTL_ND6_PRUNE     6
 620 #define ICMPV6CTL_ND6_DELAY     8
 621 #define ICMPV6CTL_ND6_UMAXTRIES 9
 622 #define ICMPV6CTL_ND6_MMAXTRIES         10
 623 #define ICMPV6CTL_ND6_USELOOPBACK       11
 624 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 625 #define ICMPV6CTL_NODEINFO      13
 626 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
 627 #define ICMPV6CTL_ND6_MAXNUDHINT        15
 628 #define ICMPV6CTL_MTUDISC_HIWAT 16
 629 #define ICMPV6CTL_MTUDISC_LOWAT 17
 630 #define ICMPV6CTL_ND6_DEBUG     18
 631 #define ICMPV6CTL_ND6_DRLIST    19
 632 #define ICMPV6CTL_ND6_PRLIST    20
 633 #define ICMPV6CTL_MAXID         21
 634
 635 #ifdef KERNEL_PRIVATE
 636 #define ICMPV6CTL_NAMES { \
 637         { 0, 0 }, \
 638         { 0, 0 }, \
 639         { "rediraccept", CTLTYPE_INT }, \
 640         { "redirtimeout", CTLTYPE_INT }, \
 641         { 0, 0 }, \
 642         { 0, 0 }, \
 643         { "nd6_prune", CTLTYPE_INT }, \
 644         { 0, 0 }, \
 645         { "nd6_delay", CTLTYPE_INT }, \
 646         { "nd6_umaxtries", CTLTYPE_INT }, \
 647         { "nd6_mmaxtries", CTLTYPE_INT }, \
 648         { "nd6_useloopback", CTLTYPE_INT }, \
 649         { 0, 0 }, \
 650         { "nodeinfo", CTLTYPE_INT }, \
 651         { "errppslimit", CTLTYPE_INT }, \
 652         { "nd6_maxnudhint", CTLTYPE_INT }, \
 653         { "mtudisc_hiwat", CTLTYPE_INT }, \
 654         { "mtudisc_lowat", CTLTYPE_INT }, \
 655         { "nd6_debug", CTLTYPE_INT }, \
 656         { 0, 0 }, \
 657         { 0, 0 }, \
 658 }
 659
 660 #define RTF_PROBEMTU    RTF_PROTO1
 661
 662 # ifdef __STDC__
 663 struct  rtentry;
 664 struct  rttimer;
 665 struct  in6_multi;
 666 # endif
 667 void    icmp6_init(void);
 668 void    icmp6_paramerror(struct mbuf *, int);
 669 void    icmp6_error(struct mbuf *, int, int, int);
 670 int     icmp6_input(struct mbuf **, int *);
 671 void    icmp6_fasttimo(void);
 672 void    icmp6_reflect(struct mbuf *, size_t);
 673 void    icmp6_prepare(struct mbuf *);
 674 void    icmp6_redirect_input(struct mbuf *, int);
 675 void    icmp6_redirect_output(struct mbuf *, struct rtentry *);
 676
 677 struct  ip6ctlparam;
 678 void    icmp6_mtudisc_update(struct ip6ctlparam *, int);
 679
 680 /* XXX: is this the right place for these macros? */
 681 #define icmp6_ifstat_inc(ifp, tag) \
 682 do {                                                            \
 683         if ((ifp) && (ifp)->if_index <= if_index                        \
 684          && (ifp)->if_index < icmp6_ifstatmax                   \
 685          && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) {    \
 686                 icmp6_ifstat[(ifp)->if_index]->tag++;           \
 687         }                                                       \
 688 } while (0)
 689
 690 #define icmp6_ifoutstat_inc(ifp, type, code) \
 691 do { \
 692                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 693                 if (type < ICMP6_INFOMSG_MASK) \
 694                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 695                 switch(type) { \
 696                  case ICMP6_DST_UNREACH: \
 697                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 698                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 699                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 700                          break; \
 701                  case ICMP6_PACKET_TOO_BIG: \
 702                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 703                          break; \
 704                  case ICMP6_TIME_EXCEEDED: \
 705                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 706                          break; \
 707                  case ICMP6_PARAM_PROB: \
 708                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 709                          break; \
 710                  case ICMP6_ECHO_REQUEST: \
 711                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 712                          break; \
 713                  case ICMP6_ECHO_REPLY: \
 714                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 715                          break; \
 716                  case MLD6_LISTENER_QUERY: \
 717                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 718                          break; \
 719                  case MLD6_LISTENER_REPORT: \
 720                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 721                          break; \
 722                  case MLD6_LISTENER_DONE: \
 723                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 724                          break; \
 725                  case ND_ROUTER_SOLICIT: \
 726                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 727                          break; \
 728                  case ND_ROUTER_ADVERT: \
 729                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 730                          break; \
 731                  case ND_NEIGHBOR_SOLICIT: \
 732                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 733                          break; \
 734                  case ND_NEIGHBOR_ADVERT: \
 735                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 736                          break; \
 737                  case ND_REDIRECT: \
 738                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 739                          break; \
 740                 } \
 741 } while (0)
 742
 743 extern int      icmp6_rediraccept;      /* accept/process redirects */
 744 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 745 #endif /* KERNEL_PRIVATE */
 746
 747 #endif /* !_NETINET_ICMP6_H_ */