1 /* $NetBSD: icmp6.h,v 1.61 2024/12/06 18:36:09 riastradh 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 #include <sys/types.h> 69 70 #include <netinet/in.h> 71 72 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 73 - sizeof(struct icmp6_hdr) */ 74 75 struct icmp6_hdr { 76 u_int8_t icmp6_type; /* type field */ 77 u_int8_t icmp6_code; /* code field */ 78 u_int16_t icmp6_cksum; /* checksum field */ 79 union { 80 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 81 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 82 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 83 } icmp6_dataun; 84 }; 85 86 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 87 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 88 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 89 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 90 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 91 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 92 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 93 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 94 95 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 96 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 97 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 98 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 99 100 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 101 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 102 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 103 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 104 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 105 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 106 107 /* RFC2292 decls */ 108 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 109 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 110 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 111 112 #ifndef _KERNEL 113 /* the followings are for backward compatibility to old KAME apps. */ 114 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 115 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 116 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 117 #endif 118 119 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 120 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 121 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 122 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 123 #define ND_REDIRECT 137 /* redirect */ 124 125 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 126 127 #define ICMP6_WRUREQUEST 139 /* who are you request */ 128 #define ICMP6_WRUREPLY 140 /* who are you reply */ 129 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 130 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 131 #define ICMP6_NI_QUERY 139 /* node information request */ 132 #define ICMP6_NI_REPLY 140 /* node information reply */ 133 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 134 135 /* The definitions below are experimental. TBA */ 136 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 137 #define MLD_MTRACE 201 /* mtrace messages */ 138 139 #ifndef _KERNEL 140 /* the followings are for backward compatibility to old KAME apps. */ 141 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 142 #define MLD6_MTRACE MLD_MTRACE 143 #endif 144 145 #define ICMP6_MAXTYPE 201 146 147 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 148 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 149 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 150 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 151 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 152 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 153 #define ICMP6_DST_UNREACH_POLICY 5 /* source address failed ingress/egress policy */ 154 #define ICMP6_DST_UNREACH_REJROUTE 6 /* reject route to destination */ 155 #define ICMP6_DST_UNREACH_SOURCERT 7 /* error in source routing header */ 156 157 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 158 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 159 160 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 161 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 162 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 163 #define ICMP6_PARAMPROB_FRAGMENT 3 /* incomplete chain in frag */ 164 165 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 166 167 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 168 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 169 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 170 171 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 172 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 173 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 174 175 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 176 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 177 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 178 179 /* Used in kernel only */ 180 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 181 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 182 183 /* 184 * Multicast Listener Discovery 185 */ 186 struct mld_hdr { 187 struct icmp6_hdr mld_icmp6_hdr; 188 struct in6_addr mld_addr; /* multicast address */ 189 }; 190 191 /* definitions to provide backward compatibility to old KAME applications */ 192 #ifndef _KERNEL 193 #define mld6_hdr mld_hdr 194 #define mld6_type mld_type 195 #define mld6_code mld_code 196 #define mld6_cksum mld_cksum 197 #define mld6_maxdelay mld_maxdelay 198 #define mld6_reserved mld_reserved 199 #define mld6_addr mld_addr 200 #endif 201 202 /* shortcut macro definitions */ 203 #define mld_type mld_icmp6_hdr.icmp6_type 204 #define mld_code mld_icmp6_hdr.icmp6_code 205 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 206 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 207 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 208 209 #define MLD_MINLEN 24 210 211 /* 212 * Neighbor Discovery 213 */ 214 215 struct nd_router_solicit { /* router solicitation */ 216 struct icmp6_hdr nd_rs_hdr; 217 /* could be followed by options */ 218 }; 219 220 #define nd_rs_type nd_rs_hdr.icmp6_type 221 #define nd_rs_code nd_rs_hdr.icmp6_code 222 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 223 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 224 225 struct nd_router_advert { /* router advertisement */ 226 struct icmp6_hdr nd_ra_hdr; 227 u_int32_t nd_ra_reachable; /* reachable time */ 228 u_int32_t nd_ra_retransmit; /* retransmit timer */ 229 /* could be followed by options */ 230 }; 231 232 #define nd_ra_type nd_ra_hdr.icmp6_type 233 #define nd_ra_code nd_ra_hdr.icmp6_code 234 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 235 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 236 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 237 #define ND_RA_FLAG_MANAGED 0x80 238 #define ND_RA_FLAG_OTHER 0x40 239 #define ND_RA_FLAG_HOME_AGENT 0x20 240 #define ND_RA_FLAG_PROXY 0x04 241 242 /* 243 * Router preference values based on RFC4191. 244 */ 245 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 246 247 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 248 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 249 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 250 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 251 252 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 253 254 struct nd_neighbor_solicit { /* neighbor solicitation */ 255 struct icmp6_hdr nd_ns_hdr; 256 struct in6_addr nd_ns_target; /*target address */ 257 /* could be followed by options */ 258 }; 259 260 #define nd_ns_type nd_ns_hdr.icmp6_type 261 #define nd_ns_code nd_ns_hdr.icmp6_code 262 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 263 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 264 265 struct nd_neighbor_advert { /* neighbor advertisement */ 266 struct icmp6_hdr nd_na_hdr; 267 struct in6_addr nd_na_target; /* target address */ 268 /* could be followed by options */ 269 }; 270 271 #define nd_na_type nd_na_hdr.icmp6_type 272 #define nd_na_code nd_na_hdr.icmp6_code 273 #define nd_na_cksum nd_na_hdr.icmp6_cksum 274 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 275 #if BYTE_ORDER == BIG_ENDIAN 276 #define ND_NA_FLAG_ROUTER 0x80000000 277 #define ND_NA_FLAG_SOLICITED 0x40000000 278 #define ND_NA_FLAG_OVERRIDE 0x20000000 279 #else 280 #if BYTE_ORDER == LITTLE_ENDIAN 281 #define ND_NA_FLAG_ROUTER 0x80 282 #define ND_NA_FLAG_SOLICITED 0x40 283 #define ND_NA_FLAG_OVERRIDE 0x20 284 #endif 285 #endif 286 287 struct nd_redirect { /* redirect */ 288 struct icmp6_hdr nd_rd_hdr; 289 struct in6_addr nd_rd_target; /* target address */ 290 struct in6_addr nd_rd_dst; /* destination address */ 291 /* could be followed by options */ 292 }; 293 294 #define nd_rd_type nd_rd_hdr.icmp6_type 295 #define nd_rd_code nd_rd_hdr.icmp6_code 296 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 297 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 298 299 struct nd_opt_hdr { /* Neighbor discovery option header */ 300 u_int8_t nd_opt_type; 301 u_int8_t nd_opt_len; 302 /* followed by option specific data*/ 303 }; 304 305 #define ND_OPT_SOURCE_LINKADDR 1 306 #define ND_OPT_TARGET_LINKADDR 2 307 #define ND_OPT_PREFIX_INFORMATION 3 308 #define ND_OPT_REDIRECTED_HEADER 4 309 #define ND_OPT_MTU 5 310 #define ND_OPT_ADVINTERVAL 7 311 #define ND_OPT_HOMEAGENT_INFO 8 312 #define ND_OPT_SOURCE_ADDRLIST 9 313 #define ND_OPT_TARGET_ADDRLIST 10 314 #define ND_OPT_NONCE 14 /* RFC 3971 */ 315 #define ND_OPT_MAP 23 /* RFC 5380 */ 316 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 317 #define ND_OPT_RDNSS 25 /* RFC 6016 */ 318 #define ND_OPT_DNSSL 31 /* RFC 6016 */ 319 #define ND_OPT_MAX 31 320 321 struct nd_opt_route_info { /* route info */ 322 u_int8_t nd_opt_rti_type; 323 u_int8_t nd_opt_rti_len; 324 u_int8_t nd_opt_rti_prefixlen; 325 u_int8_t nd_opt_rti_flags; 326 u_int32_t nd_opt_rti_lifetime; 327 /* prefix follows */ 328 }; 329 330 struct nd_opt_prefix_info { /* prefix information */ 331 u_int8_t nd_opt_pi_type; 332 u_int8_t nd_opt_pi_len; 333 u_int8_t nd_opt_pi_prefix_len; 334 u_int8_t nd_opt_pi_flags_reserved; 335 u_int32_t nd_opt_pi_valid_time; 336 u_int32_t nd_opt_pi_preferred_time; 337 u_int32_t nd_opt_pi_reserved2; 338 struct in6_addr nd_opt_pi_prefix; 339 }; 340 341 #define ND_OPT_PI_FLAG_ONLINK 0x80 342 #define ND_OPT_PI_FLAG_AUTO 0x40 343 #define ND_OPT_PI_FLAG_ROUTER 0x20 344 345 struct nd_opt_rd_hdr { /* redirected header */ 346 u_int8_t nd_opt_rh_type; 347 u_int8_t nd_opt_rh_len; 348 u_int16_t nd_opt_rh_reserved1; 349 u_int32_t nd_opt_rh_reserved2; 350 /* followed by IP header and data */ 351 }; 352 353 struct nd_opt_mtu { /* MTU option */ 354 u_int8_t nd_opt_mtu_type; 355 u_int8_t nd_opt_mtu_len; 356 u_int16_t nd_opt_mtu_reserved; 357 u_int32_t nd_opt_mtu_mtu; 358 }; 359 360 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 361 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 362 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 363 #endif 364 struct nd_opt_nonce { 365 u_int8_t nd_opt_nonce_type; 366 u_int8_t nd_opt_nonce_len; 367 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 368 }; 369 370 struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ 371 u_int8_t nd_opt_rdnss_type; 372 u_int8_t nd_opt_rdnss_len; 373 u_int16_t nd_opt_rdnss_reserved; 374 u_int32_t nd_opt_rdnss_lifetime; 375 /* followed by list of IP prefixes */ 376 }; 377 378 struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ 379 u_int8_t nd_opt_dnssl_type; 380 u_int8_t nd_opt_dnssl_len; 381 u_int16_t nd_opt_dnssl_reserved; 382 u_int32_t nd_opt_dnssl_lifetime; 383 /* followed by list of IP prefixes */ 384 }; 385 386 /* 387 * icmp6 namelookup 388 */ 389 390 struct icmp6_namelookup { 391 struct icmp6_hdr icmp6_nl_hdr; 392 u_int8_t icmp6_nl_nonce[8]; 393 int32_t icmp6_nl_ttl; 394 #if 0 395 u_int8_t icmp6_nl_len; 396 u_int8_t icmp6_nl_name[3]; 397 #endif 398 /* could be followed by options */ 399 }; 400 401 /* 402 * icmp6 node information 403 */ 404 struct icmp6_nodeinfo { 405 struct icmp6_hdr icmp6_ni_hdr; 406 u_int8_t icmp6_ni_nonce[8]; 407 /* could be followed by reply data */ 408 }; 409 410 #define ni_type icmp6_ni_hdr.icmp6_type 411 #define ni_code icmp6_ni_hdr.icmp6_code 412 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 413 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 414 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 415 416 #define NI_QTYPE_NOOP 0 /* NOOP */ 417 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 418 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 419 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 420 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 421 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 422 423 #if BYTE_ORDER == BIG_ENDIAN 424 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 425 #define NI_FQDN_FLAG_VALIDTTL 0x1 426 #elif BYTE_ORDER == LITTLE_ENDIAN 427 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 428 #define NI_FQDN_FLAG_VALIDTTL 0x0100 429 #endif 430 431 #ifdef NAME_LOOKUPS_04 432 #if BYTE_ORDER == BIG_ENDIAN 433 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 434 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 435 #define NI_NODEADDR_FLAG_GLOBAL 0x4 436 #define NI_NODEADDR_FLAG_ALL 0x8 437 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 438 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 439 #elif BYTE_ORDER == LITTLE_ENDIAN 440 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 441 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 442 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 443 #define NI_NODEADDR_FLAG_ALL 0x0800 444 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 445 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 446 #endif 447 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 448 #if BYTE_ORDER == BIG_ENDIAN 449 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 450 #define NI_NODEADDR_FLAG_ALL 0x2 451 #define NI_NODEADDR_FLAG_COMPAT 0x4 452 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 453 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 454 #define NI_NODEADDR_FLAG_GLOBAL 0x20 455 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 456 #elif BYTE_ORDER == LITTLE_ENDIAN 457 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 458 #define NI_NODEADDR_FLAG_ALL 0x0200 459 #define NI_NODEADDR_FLAG_COMPAT 0x0400 460 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 461 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 462 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 463 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 464 #endif 465 #endif 466 467 struct ni_reply_fqdn { 468 u_int32_t ni_fqdn_ttl; /* TTL */ 469 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 470 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 471 }; 472 473 /* 474 * Router Renumbering. as router-renum-08.txt 475 */ 476 struct icmp6_router_renum { /* router renumbering header */ 477 struct icmp6_hdr rr_hdr; 478 u_int8_t rr_segnum; 479 u_int8_t rr_flags; 480 u_int16_t rr_maxdelay; 481 u_int32_t rr_reserved; 482 }; 483 484 #define ICMP6_RR_FLAGS_TEST 0x80 485 #define ICMP6_RR_FLAGS_REQRESULT 0x40 486 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 487 #define ICMP6_RR_FLAGS_SPECSITE 0x10 488 #define ICMP6_RR_FLAGS_PREVDONE 0x08 489 490 #define rr_type rr_hdr.icmp6_type 491 #define rr_code rr_hdr.icmp6_code 492 #define rr_cksum rr_hdr.icmp6_cksum 493 #define rr_seqnum rr_hdr.icmp6_data32[0] 494 495 struct rr_pco_match { /* match prefix part */ 496 u_int8_t rpm_code; 497 u_int8_t rpm_len; 498 u_int8_t rpm_ordinal; 499 u_int8_t rpm_matchlen; 500 u_int8_t rpm_minlen; 501 u_int8_t rpm_maxlen; 502 u_int16_t rpm_reserved; 503 struct in6_addr rpm_prefix; 504 }; 505 506 #define RPM_PCO_ADD 1 507 #define RPM_PCO_CHANGE 2 508 #define RPM_PCO_SETGLOBAL 3 509 #define RPM_PCO_MAX 4 510 511 struct rr_pco_use { /* use prefix part */ 512 u_int8_t rpu_uselen; 513 u_int8_t rpu_keeplen; 514 u_int8_t rpu_ramask; 515 u_int8_t rpu_raflags; 516 u_int32_t rpu_vltime; 517 u_int32_t rpu_pltime; 518 u_int32_t rpu_flags; 519 struct in6_addr rpu_prefix; 520 }; 521 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 522 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 523 524 #if BYTE_ORDER == BIG_ENDIAN 525 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 526 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 527 #elif BYTE_ORDER == LITTLE_ENDIAN 528 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 529 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 530 #endif 531 532 struct rr_result { /* router renumbering result message */ 533 u_int16_t rrr_flags; 534 u_int8_t rrr_ordinal; 535 u_int8_t rrr_matchedlen; 536 u_int32_t rrr_ifid; 537 struct in6_addr rrr_prefix; 538 }; 539 #if BYTE_ORDER == BIG_ENDIAN 540 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 541 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 542 #elif BYTE_ORDER == LITTLE_ENDIAN 543 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 544 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 545 #endif 546 547 /* 548 * icmp6 filter structures. 549 */ 550 551 struct icmp6_filter { 552 u_int32_t icmp6_filt[8]; 553 }; 554 555 #define ICMP6_FILTER_SETPASSALL(filterp) \ 556 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 557 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 558 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 559 #define ICMP6_FILTER_SETPASS(type, filterp) \ 560 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 561 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 562 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 563 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 564 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 565 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 566 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 567 568 /* 569 * Variables related to this implementation 570 * of the internet control message protocol version 6. 571 */ 572 573 /* 574 * IPv6 ICMP statistics. 575 * Each counter is an unsigned 64-bit value. 576 */ 577 #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 578 #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 579 #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 580 #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 581 /* space for 256 counters */ 582 #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 583 #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 584 #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 585 #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 586 /* 587 * number of responses; this member is inherited from the netinet code, 588 * but for netinet6 code, it is already available in outhist[]. 589 */ 590 #define ICMP6_STAT_REFLECT 263 591 #define ICMP6_STAT_INHIST 264 /* # of input messages */ 592 /* space for 256 counters */ 593 #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 594 #define ICMP6_STAT_OUTERRHIST 521 595 /* space for 13 counters */ 596 #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 597 #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 598 #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 599 #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 600 #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 601 #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 602 #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 603 #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 604 605 #define ICMP6_NSTATS 542 606 607 #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 608 #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 609 #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 610 #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 611 #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 612 #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 613 #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 614 #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 615 #define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 616 #define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 617 #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 618 #define ICMP6_ERRSTAT_REDIRECT 11 619 #define ICMP6_ERRSTAT_UNKNOWN 12 620 621 /* 622 * Names for ICMP sysctl objects 623 */ 624 #define ICMPV6CTL_STATS 1 625 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 626 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 627 #if 0 /*obsoleted*/ 628 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 629 #endif 630 #define ICMPV6CTL_ND6_PRUNE 6 631 #define ICMPV6CTL_ND6_DELAY 8 632 #define ICMPV6CTL_ND6_UMAXTRIES 9 633 #define ICMPV6CTL_ND6_MMAXTRIES 10 634 #define ICMPV6CTL_ND6_USELOOPBACK 11 635 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 636 #define ICMPV6CTL_NODEINFO 13 637 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 638 #define ICMPV6CTL_ND6_MAXNUDHINT 15 639 #define ICMPV6CTL_MTUDISC_HIWAT 16 640 #define ICMPV6CTL_MTUDISC_LOWAT 17 641 #define ICMPV6CTL_ND6_DEBUG 18 642 #ifdef _KERNEL 643 #define OICMPV6CTL_ND6_DRLIST 19 644 #define OICMPV6CTL_ND6_PRLIST 20 645 #endif 646 #define ICMPV6CTL_ND6_MAXQLEN 24 647 #define ICMPV6CTL_REFLECT_PMTU 25 648 #define ICMPV6CTL_DYNAMIC_RT_MSG 26 649 650 #ifdef _KERNEL 651 struct rtentry; 652 653 void icmp6_init(void); 654 void icmp6_paramerror(struct mbuf *, int); 655 void icmp6_error(struct mbuf *, int, int, int); 656 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *, 657 struct in6_addr *); 658 int icmp6_input(struct mbuf **, int *, int); 659 void icmp6_fasttimo(void); 660 void icmp6_prepare(struct mbuf *); 661 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 662 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 663 664 void icmp6_statinc(u_int); 665 666 struct ip6ctlparam; 667 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 668 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 669 670 /* XXX: is this the right place for these macros? */ 671 #define icmp6_ifstat_inc(ifp, tag) \ 672 do { \ 673 if (ifp) \ 674 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 675 } while (/*CONSTCOND*/ 0) 676 677 #define icmp6_ifoutstat_inc(ifp, type, code) \ 678 do { \ 679 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 680 switch(type) { \ 681 case ICMP6_DST_UNREACH: \ 682 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 683 if (code == ICMP6_DST_UNREACH_ADMIN) \ 684 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 685 break; \ 686 case ICMP6_PACKET_TOO_BIG: \ 687 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 688 break; \ 689 case ICMP6_TIME_EXCEEDED: \ 690 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 691 break; \ 692 case ICMP6_PARAM_PROB: \ 693 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 694 break; \ 695 case ICMP6_ECHO_REQUEST: \ 696 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 697 break; \ 698 case ICMP6_ECHO_REPLY: \ 699 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 700 break; \ 701 case MLD_LISTENER_QUERY: \ 702 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 703 break; \ 704 case MLD_LISTENER_REPORT: \ 705 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 706 break; \ 707 case MLD_LISTENER_DONE: \ 708 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 709 break; \ 710 case ND_ROUTER_SOLICIT: \ 711 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 712 break; \ 713 case ND_ROUTER_ADVERT: \ 714 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 715 break; \ 716 case ND_NEIGHBOR_SOLICIT: \ 717 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 718 break; \ 719 case ND_NEIGHBOR_ADVERT: \ 720 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 721 break; \ 722 case ND_REDIRECT: \ 723 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 724 break; \ 725 } \ 726 } while (/*CONSTCOND*/ 0) 727 728 extern int icmp6_rediraccept; /* accept/process redirects */ 729 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 730 #endif /* _KERNEL */ 731 732 #ifdef ICMP6_STRINGS 733 /* Info: http://www.iana.org/assignments/icmpv6-parameters */ 734 735 static const char * const icmp6_type_err[] = { 736 "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob", 737 NULL 738 }; 739 740 static const char * const icmp6_type_info[] = { 741 "echo", "echoreply", 742 "mcastlistenq", "mcastlistenrep", "mcastlistendone", 743 "rtsol", "rtadv", "neighsol", "neighadv", "redirect", 744 "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep", 745 "mcastlistenrep2", "haad_req", "haad_rep", 746 "mobile_psol", "mobile_padv", "cga_sol", "cga_adv", 747 "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm", 748 "fmipv6_msg", "rpl_control", NULL 749 }; 750 751 static const char * const icmp6_code_none[] = { "none", NULL }; 752 753 static const char * const icmp6_code_unreach[] = { 754 "noroute", "admin", "beyondscope", "addr", "port", 755 "srcaddr_policy", "reject_route", "source_route_err", NULL 756 }; 757 758 static const char * const icmp6_code_timxceed[] = { 759 "intrans", "reass", NULL 760 }; 761 762 static const char * const icmp6_code_paramprob[] = { 763 "hdr_field", "nxthdr_type", "option", NULL 764 }; 765 766 /* not all informational icmps that have codes have a names array */ 767 #endif 768 769 #endif /* !_NETINET_ICMP6_H_ */ 770