1 /* @(#) $Header: /tcpdump/master/tcpdump/icmp6.h,v 1.16.2.1 2005/09/05 09:29:28 guy Exp $ (LBL) */ 2 /* $NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp $ */ 3 /* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 67 */ 68 69 #ifndef _NETINET_ICMP6_H_ 70 #define _NETINET_ICMP6_H_ 71 72 struct icmp6_hdr { 73 u_int8_t icmp6_type; /* type field */ 74 u_int8_t icmp6_code; /* code field */ 75 u_int16_t icmp6_cksum; /* checksum field */ 76 union { 77 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 78 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 79 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 80 } icmp6_dataun; 81 }; 82 83 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 84 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 85 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 86 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 87 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 88 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 89 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 90 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 91 92 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 93 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 94 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 95 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 96 97 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 98 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 99 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 100 #define MLD6_LISTENER_QUERY 130 /* multicast listener query */ 101 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 102 #define MLD6_LISTENER_REPORT 131 /* multicast listener report */ 103 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 104 #define MLD6_LISTENER_DONE 132 /* multicast listener done */ 105 106 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 107 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 108 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 109 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 110 #define ND_REDIRECT 137 /* redirect */ 111 112 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 113 114 #define ICMP6_WRUREQUEST 139 /* who are you request */ 115 #define ICMP6_WRUREPLY 140 /* who are you reply */ 116 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 117 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 118 #define ICMP6_NI_QUERY 139 /* node information request */ 119 #define ICMP6_NI_REPLY 140 /* node information reply */ 120 #define IND_SOLICIT 141 /* inverse neighbor solicitation */ 121 #define IND_ADVERT 142 /* inverse neighbor advertisement */ 122 123 #define ICMP6_V2_MEMBERSHIP_REPORT 143 /* v2 membership report */ 124 #define MLDV2_LISTENER_REPORT 143 /* v2 multicast listener report */ 125 #define ICMP6_HADISCOV_REQUEST 144 126 #define ICMP6_HADISCOV_REPLY 145 127 #define ICMP6_MOBILEPREFIX_SOLICIT 146 128 #define ICMP6_MOBILEPREFIX_ADVERT 147 129 130 #define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */ 131 #define MLD6_MTRACE 201 /* mtrace messages */ 132 133 #define ICMP6_MAXTYPE 201 134 135 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 136 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 137 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 138 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 139 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 140 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 141 142 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 143 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 144 145 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 146 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 147 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 148 149 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 150 151 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 152 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 153 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 154 155 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 156 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 157 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 158 159 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 160 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 161 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 162 163 /* Used in kernel only */ 164 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 165 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 166 167 /* 168 * Multicast Listener Discovery 169 */ 170 struct mld6_hdr { 171 struct icmp6_hdr mld6_hdr; 172 struct in6_addr mld6_addr; /* multicast address */ 173 }; 174 175 #define mld6_type mld6_hdr.icmp6_type 176 #define mld6_code mld6_hdr.icmp6_code 177 #define mld6_cksum mld6_hdr.icmp6_cksum 178 #define mld6_maxdelay mld6_hdr.icmp6_data16[0] 179 #define mld6_reserved mld6_hdr.icmp6_data16[1] 180 181 #define MLD_MINLEN 24 182 #define MLDV2_MINLEN 28 183 184 /* 185 * Neighbor Discovery 186 */ 187 188 struct nd_router_solicit { /* router solicitation */ 189 struct icmp6_hdr nd_rs_hdr; 190 /* could be followed by options */ 191 }; 192 193 #define nd_rs_type nd_rs_hdr.icmp6_type 194 #define nd_rs_code nd_rs_hdr.icmp6_code 195 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 196 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 197 198 struct nd_router_advert { /* router advertisement */ 199 struct icmp6_hdr nd_ra_hdr; 200 u_int32_t nd_ra_reachable; /* reachable time */ 201 u_int32_t nd_ra_retransmit; /* retransmit timer */ 202 /* could be followed by options */ 203 }; 204 205 #define nd_ra_type nd_ra_hdr.icmp6_type 206 #define nd_ra_code nd_ra_hdr.icmp6_code 207 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 208 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 209 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 210 #define ND_RA_FLAG_MANAGED 0x80 211 #define ND_RA_FLAG_OTHER 0x40 212 #define ND_RA_FLAG_HOME_AGENT 0x20 213 214 /* 215 * Router preference values based on draft-draves-ipngwg-router-selection-01. 216 * These are non-standard definitions. 217 */ 218 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 219 220 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 221 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 222 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 223 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 224 225 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 226 227 struct nd_neighbor_solicit { /* neighbor solicitation */ 228 struct icmp6_hdr nd_ns_hdr; 229 struct in6_addr nd_ns_target; /*target address */ 230 /* could be followed by options */ 231 }; 232 233 #define nd_ns_type nd_ns_hdr.icmp6_type 234 #define nd_ns_code nd_ns_hdr.icmp6_code 235 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 236 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 237 238 struct nd_neighbor_advert { /* neighbor advertisement */ 239 struct icmp6_hdr nd_na_hdr; 240 struct in6_addr nd_na_target; /* target address */ 241 /* could be followed by options */ 242 }; 243 244 #define nd_na_type nd_na_hdr.icmp6_type 245 #define nd_na_code nd_na_hdr.icmp6_code 246 #define nd_na_cksum nd_na_hdr.icmp6_cksum 247 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 248 249 #define ND_NA_FLAG_ROUTER 0x80000000 250 #define ND_NA_FLAG_SOLICITED 0x40000000 251 #define ND_NA_FLAG_OVERRIDE 0x20000000 252 253 struct nd_redirect { /* redirect */ 254 struct icmp6_hdr nd_rd_hdr; 255 struct in6_addr nd_rd_target; /* target address */ 256 struct in6_addr nd_rd_dst; /* destination address */ 257 /* could be followed by options */ 258 }; 259 260 #define nd_rd_type nd_rd_hdr.icmp6_type 261 #define nd_rd_code nd_rd_hdr.icmp6_code 262 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 263 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 264 265 struct nd_opt_hdr { /* Neighbor discovery option header */ 266 u_int8_t nd_opt_type; 267 u_int8_t nd_opt_len; 268 /* followed by option specific data*/ 269 }; 270 271 #define ND_OPT_SOURCE_LINKADDR 1 272 #define ND_OPT_TARGET_LINKADDR 2 273 #define ND_OPT_PREFIX_INFORMATION 3 274 #define ND_OPT_REDIRECTED_HEADER 4 275 #define ND_OPT_MTU 5 276 #define ND_OPT_ADVINTERVAL 7 277 #define ND_OPT_HOMEAGENT_INFO 8 278 #define ND_OPT_ROUTE_INFO 9 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 279 280 281 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_int8_t nd_opt_pi_valid_time[4]; 287 u_int8_t nd_opt_pi_preferred_time[4]; 288 u_int8_t nd_opt_pi_reserved2[4]; 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_ROUTER 0x20 /*2292bis*/ 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_advinterval { /* Advertisement interval option */ 312 u_int8_t nd_opt_adv_type; 313 u_int8_t nd_opt_adv_len; 314 u_int16_t nd_opt_adv_reserved; 315 u_int32_t nd_opt_adv_interval; 316 }; 317 318 struct nd_opt_homeagent_info { /* Home Agent info */ 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 int16_t nd_opt_hai_preference; 323 u_int16_t nd_opt_hai_lifetime; 324 }; 325 326 struct nd_opt_route_info { /* route info */ 327 u_int8_t nd_opt_rti_type; 328 u_int8_t nd_opt_rti_len; 329 u_int8_t nd_opt_rti_prefixlen; 330 u_int8_t nd_opt_rti_flags; 331 u_int32_t nd_opt_rti_lifetime; 332 /* prefix follows */ 333 }; 334 335 /* 336 * icmp6 namelookup 337 */ 338 339 struct icmp6_namelookup { 340 struct icmp6_hdr icmp6_nl_hdr; 341 u_int8_t icmp6_nl_nonce[8]; 342 int32_t icmp6_nl_ttl; 343 #if 0 344 u_int8_t icmp6_nl_len; 345 u_int8_t icmp6_nl_name[3]; 346 #endif 347 /* could be followed by options */ 348 }; 349 350 /* 351 * icmp6 node information 352 */ 353 struct icmp6_nodeinfo { 354 struct icmp6_hdr icmp6_ni_hdr; 355 u_int8_t icmp6_ni_nonce[8]; 356 /* could be followed by reply data */ 357 }; 358 359 #define ni_type icmp6_ni_hdr.icmp6_type 360 #define ni_code icmp6_ni_hdr.icmp6_code 361 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 362 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 363 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 364 365 #define NI_QTYPE_NOOP 0 /* NOOP */ 366 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 367 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 368 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 369 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 370 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 371 372 /* network endian */ 373 #define NI_SUPTYPE_FLAG_COMPRESS ((u_int16_t)htons(0x1)) 374 #define NI_FQDN_FLAG_VALIDTTL ((u_int16_t)htons(0x1)) 375 376 /* network endian */ 377 #define NI_NODEADDR_FLAG_TRUNCATE ((u_int16_t)htons(0x1)) 378 #define NI_NODEADDR_FLAG_ALL ((u_int16_t)htons(0x2)) 379 #define NI_NODEADDR_FLAG_COMPAT ((u_int16_t)htons(0x4)) 380 #define NI_NODEADDR_FLAG_LINKLOCAL ((u_int16_t)htons(0x8)) 381 #define NI_NODEADDR_FLAG_SITELOCAL ((u_int16_t)htons(0x10)) 382 #define NI_NODEADDR_FLAG_GLOBAL ((u_int16_t)htons(0x20)) 383 #define NI_NODEADDR_FLAG_ANYCAST ((u_int16_t)htons(0x40)) /* just experimental. not in spec */ 384 385 struct ni_reply_fqdn { 386 u_int32_t ni_fqdn_ttl; /* TTL */ 387 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 388 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 389 }; 390 391 /* 392 * Router Renumbering. as router-renum-08.txt 393 */ 394 struct icmp6_router_renum { /* router renumbering header */ 395 struct icmp6_hdr rr_hdr; 396 u_int8_t rr_segnum; 397 u_int8_t rr_flags; 398 u_int16_t rr_maxdelay; 399 u_int32_t rr_reserved; 400 }; 401 #define ICMP6_RR_FLAGS_TEST 0x80 402 #define ICMP6_RR_FLAGS_REQRESULT 0x40 403 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 404 #define ICMP6_RR_FLAGS_SPECSITE 0x10 405 #define ICMP6_RR_FLAGS_PREVDONE 0x08 406 407 #define rr_type rr_hdr.icmp6_type 408 #define rr_code rr_hdr.icmp6_code 409 #define rr_cksum rr_hdr.icmp6_cksum 410 #define rr_seqnum rr_hdr.icmp6_data32[0] 411 412 struct rr_pco_match { /* match prefix part */ 413 u_int8_t rpm_code; 414 u_int8_t rpm_len; 415 u_int8_t rpm_ordinal; 416 u_int8_t rpm_matchlen; 417 u_int8_t rpm_minlen; 418 u_int8_t rpm_maxlen; 419 u_int16_t rpm_reserved; 420 struct in6_addr rpm_prefix; 421 }; 422 423 #define RPM_PCO_ADD 1 424 #define RPM_PCO_CHANGE 2 425 #define RPM_PCO_SETGLOBAL 3 426 #define RPM_PCO_MAX 4 427 428 struct rr_pco_use { /* use prefix part */ 429 u_int8_t rpu_uselen; 430 u_int8_t rpu_keeplen; 431 u_int8_t rpu_ramask; 432 u_int8_t rpu_raflags; 433 u_int32_t rpu_vltime; 434 u_int32_t rpu_pltime; 435 u_int32_t rpu_flags; 436 struct in6_addr rpu_prefix; 437 }; 438 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 439 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 440 441 /* network endian */ 442 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((u_int32_t)htonl(0x80000000)) 443 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((u_int32_t)htonl(0x40000000)) 444 445 struct rr_result { /* router renumbering result message */ 446 u_int16_t rrr_flags; 447 u_int8_t rrr_ordinal; 448 u_int8_t rrr_matchedlen; 449 u_int32_t rrr_ifid; 450 struct in6_addr rrr_prefix; 451 }; 452 /* network endian */ 453 #define ICMP6_RR_RESULT_FLAGS_OOB ((u_int16_t)htons(0x0002)) 454 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((u_int16_t)htons(0x0001)) 455 456 #endif /* not _NETINET_ICMP6_H_ */ 457