1 /* $NetBSD: icmp6.h,v 1.59 2022/08/29 09:14:02 knakahara Exp $ */ 2 /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */ 3 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. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 63 */ 64 65 #ifndef _NETINET_ICMP6_H_ 66 #define _NETINET_ICMP6_H_ 67 68 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 69 - sizeof(struct icmp6_hdr) */ 70 71 struct icmp6_hdr { 72 u_int8_t icmp6_type; /* type field */ 73 u_int8_t icmp6_code; /* code field */ 74 u_int16_t icmp6_cksum; /* checksum field */ 75 union { 76 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 77 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 78 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 79 } icmp6_dataun; 80 }; 81 82 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 83 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 84 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 85 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 86 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 87 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 88 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 89 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 90 91 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 92 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 93 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 94 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 95 96 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 97 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 98 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 99 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 100 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 101 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 102 103 /* RFC2292 decls */ 104 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 105 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 106 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 107 108 #ifndef _KERNEL 109 /* the followings are for backward compatibility to old KAME apps. */ 110 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 111 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 112 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 113 #endif 114 115 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 116 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 117 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 118 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 119 #define ND_REDIRECT 137 /* redirect */ 120 121 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 122 123 #define ICMP6_WRUREQUEST 139 /* who are you request */ 124 #define ICMP6_WRUREPLY 140 /* who are you reply */ 125 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 126 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 127 #define ICMP6_NI_QUERY 139 /* node information request */ 128 #define ICMP6_NI_REPLY 140 /* node information reply */ 129 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 130 131 /* The definitions below are experimental. TBA */ 132 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 133 #define MLD_MTRACE 201 /* mtrace messages */ 134 135 #ifndef _KERNEL 136 /* the followings are for backward compatibility to old KAME apps. */ 137 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 138 #define MLD6_MTRACE MLD_MTRACE 139 #endif 140 141 #define ICMP6_MAXTYPE 201 142 143 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 144 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 145 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 146 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 147 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 148 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 149 #define ICMP6_DST_UNREACH_POLICY 5 /* source address failed ingress/egress policy */ 150 #define ICMP6_DST_UNREACH_REJROUTE 6 /* reject route to destination */ 151 #define ICMP6_DST_UNREACH_SOURCERT 7 /* error in source routing header */ 152 153 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 154 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 155 156 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 157 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 158 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 159 #define ICMP6_PARAMPROB_FRAGMENT 3 /* incomplete chain in frag */ 160 161 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 162 163 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 164 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 165 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 166 167 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 168 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 169 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 170 171 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 172 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 173 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 174 175 /* Used in kernel only */ 176 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 177 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 178 179 /* 180 * Multicast Listener Discovery 181 */ 182 struct mld_hdr { 183 struct icmp6_hdr mld_icmp6_hdr; 184 struct in6_addr mld_addr; /* multicast address */ 185 }; 186 187 /* definitions to provide backward compatibility to old KAME applications */ 188 #ifndef _KERNEL 189 #define mld6_hdr mld_hdr 190 #define mld6_type mld_type 191 #define mld6_code mld_code 192 #define mld6_cksum mld_cksum 193 #define mld6_maxdelay mld_maxdelay 194 #define mld6_reserved mld_reserved 195 #define mld6_addr mld_addr 196 #endif 197 198 /* shortcut macro definitions */ 199 #define mld_type mld_icmp6_hdr.icmp6_type 200 #define mld_code mld_icmp6_hdr.icmp6_code 201 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 202 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 203 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 204 205 #define MLD_MINLEN 24 206 207 /* 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_HOME_AGENT 0x20 236 #define ND_RA_FLAG_PROXY 0x04 237 238 /* 239 * Router preference values based on RFC4191. 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 #define ND_OPT_ADVINTERVAL 7 307 #define ND_OPT_HOMEAGENT_INFO 8 308 #define ND_OPT_SOURCE_ADDRLIST 9 309 #define ND_OPT_TARGET_ADDRLIST 10 310 #define ND_OPT_NONCE 14 /* RFC 3971 */ 311 #define ND_OPT_MAP 23 /* RFC 5380 */ 312 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 313 #define ND_OPT_RDNSS 25 /* RFC 6016 */ 314 #define ND_OPT_DNSSL 31 /* RFC 6016 */ 315 #define ND_OPT_MAX 31 316 317 struct nd_opt_route_info { /* route info */ 318 u_int8_t nd_opt_rti_type; 319 u_int8_t nd_opt_rti_len; 320 u_int8_t nd_opt_rti_prefixlen; 321 u_int8_t nd_opt_rti_flags; 322 u_int32_t nd_opt_rti_lifetime; 323 /* prefix follows */ 324 }; 325 326 struct nd_opt_prefix_info { /* prefix information */ 327 u_int8_t nd_opt_pi_type; 328 u_int8_t nd_opt_pi_len; 329 u_int8_t nd_opt_pi_prefix_len; 330 u_int8_t nd_opt_pi_flags_reserved; 331 u_int32_t nd_opt_pi_valid_time; 332 u_int32_t nd_opt_pi_preferred_time; 333 u_int32_t nd_opt_pi_reserved2; 334 struct in6_addr nd_opt_pi_prefix; 335 }; 336 337 #define ND_OPT_PI_FLAG_ONLINK 0x80 338 #define ND_OPT_PI_FLAG_AUTO 0x40 339 #define ND_OPT_PI_FLAG_ROUTER 0x20 340 341 struct nd_opt_rd_hdr { /* redirected header */ 342 u_int8_t nd_opt_rh_type; 343 u_int8_t nd_opt_rh_len; 344 u_int16_t nd_opt_rh_reserved1; 345 u_int32_t nd_opt_rh_reserved2; 346 /* followed by IP header and data */ 347 }; 348 349 struct nd_opt_mtu { /* MTU option */ 350 u_int8_t nd_opt_mtu_type; 351 u_int8_t nd_opt_mtu_len; 352 u_int16_t nd_opt_mtu_reserved; 353 u_int32_t nd_opt_mtu_mtu; 354 }; 355 356 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 357 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 358 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 359 #endif 360 struct nd_opt_nonce { 361 u_int8_t nd_opt_nonce_type; 362 u_int8_t nd_opt_nonce_len; 363 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 364 }; 365 366 struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ 367 u_int8_t nd_opt_rdnss_type; 368 u_int8_t nd_opt_rdnss_len; 369 u_int16_t nd_opt_rdnss_reserved; 370 u_int32_t nd_opt_rdnss_lifetime; 371 /* followed by list of IP prefixes */ 372 }; 373 374 struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ 375 u_int8_t nd_opt_dnssl_type; 376 u_int8_t nd_opt_dnssl_len; 377 u_int16_t nd_opt_dnssl_reserved; 378 u_int32_t nd_opt_dnssl_lifetime; 379 /* followed by list of IP prefixes */ 380 }; 381 382 /* 383 * icmp6 namelookup 384 */ 385 386 struct icmp6_namelookup { 387 struct icmp6_hdr icmp6_nl_hdr; 388 u_int8_t icmp6_nl_nonce[8]; 389 int32_t icmp6_nl_ttl; 390 #if 0 391 u_int8_t icmp6_nl_len; 392 u_int8_t icmp6_nl_name[3]; 393 #endif 394 /* could be followed by options */ 395 }; 396 397 /* 398 * icmp6 node information 399 */ 400 struct icmp6_nodeinfo { 401 struct icmp6_hdr icmp6_ni_hdr; 402 u_int8_t icmp6_ni_nonce[8]; 403 /* could be followed by reply data */ 404 }; 405 406 #define ni_type icmp6_ni_hdr.icmp6_type 407 #define ni_code icmp6_ni_hdr.icmp6_code 408 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 409 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 410 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 411 412 #define NI_QTYPE_NOOP 0 /* NOOP */ 413 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 414 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 415 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 416 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 417 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 418 419 #if BYTE_ORDER == BIG_ENDIAN 420 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 421 #define NI_FQDN_FLAG_VALIDTTL 0x1 422 #elif BYTE_ORDER == LITTLE_ENDIAN 423 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 424 #define NI_FQDN_FLAG_VALIDTTL 0x0100 425 #endif 426 427 #ifdef NAME_LOOKUPS_04 428 #if BYTE_ORDER == BIG_ENDIAN 429 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 430 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 431 #define NI_NODEADDR_FLAG_GLOBAL 0x4 432 #define NI_NODEADDR_FLAG_ALL 0x8 433 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 434 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 435 #elif BYTE_ORDER == LITTLE_ENDIAN 436 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 437 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 438 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 439 #define NI_NODEADDR_FLAG_ALL 0x0800 440 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 441 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 442 #endif 443 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 444 #if BYTE_ORDER == BIG_ENDIAN 445 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 446 #define NI_NODEADDR_FLAG_ALL 0x2 447 #define NI_NODEADDR_FLAG_COMPAT 0x4 448 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 449 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 450 #define NI_NODEADDR_FLAG_GLOBAL 0x20 451 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 452 #elif BYTE_ORDER == LITTLE_ENDIAN 453 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 454 #define NI_NODEADDR_FLAG_ALL 0x0200 455 #define NI_NODEADDR_FLAG_COMPAT 0x0400 456 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 457 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 458 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 459 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 460 #endif 461 #endif 462 463 struct ni_reply_fqdn { 464 u_int32_t ni_fqdn_ttl; /* TTL */ 465 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 466 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 467 }; 468 469 /* 470 * Router Renumbering. as router-renum-08.txt 471 */ 472 struct icmp6_router_renum { /* router renumbering header */ 473 struct icmp6_hdr rr_hdr; 474 u_int8_t rr_segnum; 475 u_int8_t rr_flags; 476 u_int16_t rr_maxdelay; 477 u_int32_t rr_reserved; 478 }; 479 480 #define ICMP6_RR_FLAGS_TEST 0x80 481 #define ICMP6_RR_FLAGS_REQRESULT 0x40 482 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 483 #define ICMP6_RR_FLAGS_SPECSITE 0x10 484 #define ICMP6_RR_FLAGS_PREVDONE 0x08 485 486 #define rr_type rr_hdr.icmp6_type 487 #define rr_code rr_hdr.icmp6_code 488 #define rr_cksum rr_hdr.icmp6_cksum 489 #define rr_seqnum rr_hdr.icmp6_data32[0] 490 491 struct rr_pco_match { /* match prefix part */ 492 u_int8_t rpm_code; 493 u_int8_t rpm_len; 494 u_int8_t rpm_ordinal; 495 u_int8_t rpm_matchlen; 496 u_int8_t rpm_minlen; 497 u_int8_t rpm_maxlen; 498 u_int16_t rpm_reserved; 499 struct in6_addr rpm_prefix; 500 }; 501 502 #define RPM_PCO_ADD 1 503 #define RPM_PCO_CHANGE 2 504 #define RPM_PCO_SETGLOBAL 3 505 #define RPM_PCO_MAX 4 506 507 struct rr_pco_use { /* use prefix part */ 508 u_int8_t rpu_uselen; 509 u_int8_t rpu_keeplen; 510 u_int8_t rpu_ramask; 511 u_int8_t rpu_raflags; 512 u_int32_t rpu_vltime; 513 u_int32_t rpu_pltime; 514 u_int32_t rpu_flags; 515 struct in6_addr rpu_prefix; 516 }; 517 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 518 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 519 520 #if BYTE_ORDER == BIG_ENDIAN 521 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 522 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 523 #elif BYTE_ORDER == LITTLE_ENDIAN 524 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 525 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 526 #endif 527 528 struct rr_result { /* router renumbering result message */ 529 u_int16_t rrr_flags; 530 u_int8_t rrr_ordinal; 531 u_int8_t rrr_matchedlen; 532 u_int32_t rrr_ifid; 533 struct in6_addr rrr_prefix; 534 }; 535 #if BYTE_ORDER == BIG_ENDIAN 536 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 537 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 538 #elif BYTE_ORDER == LITTLE_ENDIAN 539 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 540 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 541 #endif 542 543 /* 544 * icmp6 filter structures. 545 */ 546 547 struct icmp6_filter { 548 u_int32_t icmp6_filt[8]; 549 }; 550 551 #define ICMP6_FILTER_SETPASSALL(filterp) \ 552 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 553 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 554 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 555 #define ICMP6_FILTER_SETPASS(type, filterp) \ 556 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 557 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 558 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 559 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 560 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 561 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 562 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 563 564 /* 565 * Variables related to this implementation 566 * of the internet control message protocol version 6. 567 */ 568 569 /* 570 * IPv6 ICMP statistics. 571 * Each counter is an unsigned 64-bit value. 572 */ 573 #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 574 #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 575 #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 576 #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 577 /* space for 256 counters */ 578 #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 579 #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 580 #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 581 #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 582 /* 583 * number of responses; this member is inherited from the netinet code, 584 * but for netinet6 code, it is already available in outhist[]. 585 */ 586 #define ICMP6_STAT_REFLECT 263 587 #define ICMP6_STAT_INHIST 264 /* # of input messages */ 588 /* space for 256 counters */ 589 #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 590 #define ICMP6_STAT_OUTERRHIST 521 591 /* space for 13 counters */ 592 #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 593 #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 594 #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 595 #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 596 #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 597 #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 598 #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 599 #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 600 601 #define ICMP6_NSTATS 542 602 603 #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 604 #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 605 #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 606 #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 607 #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 608 #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 609 #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 610 #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 611 #define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 612 #define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 613 #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 614 #define ICMP6_ERRSTAT_REDIRECT 11 615 #define ICMP6_ERRSTAT_UNKNOWN 12 616 617 /* 618 * Names for ICMP sysctl objects 619 */ 620 #define ICMPV6CTL_STATS 1 621 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 622 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 623 #if 0 /*obsoleted*/ 624 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 625 #endif 626 #define ICMPV6CTL_ND6_PRUNE 6 627 #define ICMPV6CTL_ND6_DELAY 8 628 #define ICMPV6CTL_ND6_UMAXTRIES 9 629 #define ICMPV6CTL_ND6_MMAXTRIES 10 630 #define ICMPV6CTL_ND6_USELOOPBACK 11 631 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 632 #define ICMPV6CTL_NODEINFO 13 633 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 634 #define ICMPV6CTL_ND6_MAXNUDHINT 15 635 #define ICMPV6CTL_MTUDISC_HIWAT 16 636 #define ICMPV6CTL_MTUDISC_LOWAT 17 637 #define ICMPV6CTL_ND6_DEBUG 18 638 #ifdef _KERNEL 639 #define OICMPV6CTL_ND6_DRLIST 19 640 #define OICMPV6CTL_ND6_PRLIST 20 641 #endif 642 #define ICMPV6CTL_ND6_MAXQLEN 24 643 #define ICMPV6CTL_REFLECT_PMTU 25 644 #define ICMPV6CTL_DYNAMIC_RT_MSG 26 645 646 #ifdef _KERNEL 647 struct rtentry; 648 649 void icmp6_init(void); 650 void icmp6_paramerror(struct mbuf *, int); 651 void icmp6_error(struct mbuf *, int, int, int); 652 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *, 653 struct in6_addr *); 654 int icmp6_input(struct mbuf **, int *, int); 655 void icmp6_fasttimo(void); 656 void icmp6_prepare(struct mbuf *); 657 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 658 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 659 660 void icmp6_statinc(u_int); 661 662 struct ip6ctlparam; 663 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 664 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 665 666 /* XXX: is this the right place for these macros? */ 667 #define icmp6_ifstat_inc(ifp, tag) \ 668 do { \ 669 if (ifp) \ 670 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 671 } while (/*CONSTCOND*/ 0) 672 673 #define icmp6_ifoutstat_inc(ifp, type, code) \ 674 do { \ 675 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 676 switch(type) { \ 677 case ICMP6_DST_UNREACH: \ 678 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 679 if (code == ICMP6_DST_UNREACH_ADMIN) \ 680 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 681 break; \ 682 case ICMP6_PACKET_TOO_BIG: \ 683 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 684 break; \ 685 case ICMP6_TIME_EXCEEDED: \ 686 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 687 break; \ 688 case ICMP6_PARAM_PROB: \ 689 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 690 break; \ 691 case ICMP6_ECHO_REQUEST: \ 692 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 693 break; \ 694 case ICMP6_ECHO_REPLY: \ 695 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 696 break; \ 697 case MLD_LISTENER_QUERY: \ 698 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 699 break; \ 700 case MLD_LISTENER_REPORT: \ 701 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 702 break; \ 703 case MLD_LISTENER_DONE: \ 704 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 705 break; \ 706 case ND_ROUTER_SOLICIT: \ 707 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 708 break; \ 709 case ND_ROUTER_ADVERT: \ 710 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 711 break; \ 712 case ND_NEIGHBOR_SOLICIT: \ 713 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 714 break; \ 715 case ND_NEIGHBOR_ADVERT: \ 716 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 717 break; \ 718 case ND_REDIRECT: \ 719 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 720 break; \ 721 } \ 722 } while (/*CONSTCOND*/ 0) 723 724 extern int icmp6_rediraccept; /* accept/process redirects */ 725 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 726 #endif /* _KERNEL */ 727 728 #ifdef ICMP6_STRINGS 729 /* Info: http://www.iana.org/assignments/icmpv6-parameters */ 730 731 static const char * const icmp6_type_err[] = { 732 "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob", 733 NULL 734 }; 735 736 static const char * const icmp6_type_info[] = { 737 "echo", "echoreply", 738 "mcastlistenq", "mcastlistenrep", "mcastlistendone", 739 "rtsol", "rtadv", "neighsol", "neighadv", "redirect", 740 "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep", 741 "mcastlistenrep2", "haad_req", "haad_rep", 742 "mobile_psol", "mobile_padv", "cga_sol", "cga_adv", 743 "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm", 744 "fmipv6_msg", "rpl_control", NULL 745 }; 746 747 static const char * const icmp6_code_none[] = { "none", NULL }; 748 749 static const char * const icmp6_code_unreach[] = { 750 "noroute", "admin", "beyondscope", "addr", "port", 751 "srcaddr_policy", "reject_route", "source_route_err", NULL 752 }; 753 754 static const char * const icmp6_code_timxceed[] = { 755 "intrans", "reass", NULL 756 }; 757 758 static const char * const icmp6_code_paramprob[] = { 759 "hdr_field", "nxthdr_type", "option", NULL 760 }; 761 762 /* not all informational icmps that have codes have a names array */ 763 #endif 764 765 #endif /* !_NETINET_ICMP6_H_ */ 766