icmp6.h revision 1.52
1 /* $NetBSD: icmp6.h,v 1.52 2018/08/22 01:05:24 msaitoh 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 } __packed; 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 } __packed; 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 } __packed; 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 } __packed; 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 236 237 /* 238 * Router preference values based on RFC4191. 239 */ 240 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 241 242 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 243 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 244 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 245 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 246 247 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 248 249 struct nd_neighbor_solicit { /* neighbor solicitation */ 250 struct icmp6_hdr nd_ns_hdr; 251 struct in6_addr nd_ns_target; /*target address */ 252 /* could be followed by options */ 253 } __packed; 254 255 #define nd_ns_type nd_ns_hdr.icmp6_type 256 #define nd_ns_code nd_ns_hdr.icmp6_code 257 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 258 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 259 260 struct nd_neighbor_advert { /* neighbor advertisement */ 261 struct icmp6_hdr nd_na_hdr; 262 struct in6_addr nd_na_target; /* target address */ 263 /* could be followed by options */ 264 } __packed; 265 266 #define nd_na_type nd_na_hdr.icmp6_type 267 #define nd_na_code nd_na_hdr.icmp6_code 268 #define nd_na_cksum nd_na_hdr.icmp6_cksum 269 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 270 #if BYTE_ORDER == BIG_ENDIAN 271 #define ND_NA_FLAG_ROUTER 0x80000000 272 #define ND_NA_FLAG_SOLICITED 0x40000000 273 #define ND_NA_FLAG_OVERRIDE 0x20000000 274 #else 275 #if BYTE_ORDER == LITTLE_ENDIAN 276 #define ND_NA_FLAG_ROUTER 0x80 277 #define ND_NA_FLAG_SOLICITED 0x40 278 #define ND_NA_FLAG_OVERRIDE 0x20 279 #endif 280 #endif 281 282 struct nd_redirect { /* redirect */ 283 struct icmp6_hdr nd_rd_hdr; 284 struct in6_addr nd_rd_target; /* target address */ 285 struct in6_addr nd_rd_dst; /* destination address */ 286 /* could be followed by options */ 287 } __packed; 288 289 #define nd_rd_type nd_rd_hdr.icmp6_type 290 #define nd_rd_code nd_rd_hdr.icmp6_code 291 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 292 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 293 294 struct nd_opt_hdr { /* Neighbor discovery option header */ 295 u_int8_t nd_opt_type; 296 u_int8_t nd_opt_len; 297 /* followed by option specific data*/ 298 } __packed; 299 300 #define ND_OPT_SOURCE_LINKADDR 1 301 #define ND_OPT_TARGET_LINKADDR 2 302 #define ND_OPT_PREFIX_INFORMATION 3 303 #define ND_OPT_REDIRECTED_HEADER 4 304 #define ND_OPT_MTU 5 305 #define ND_OPT_ADVINTERVAL 7 306 #define ND_OPT_HOMEAGENT_INFO 8 307 #define ND_OPT_SOURCE_ADDRLIST 9 308 #define ND_OPT_TARGET_ADDRLIST 10 309 #define ND_OPT_NONCE 14 /* RFC 3971 */ 310 #define ND_OPT_MAP 23 /* RFC 5380 */ 311 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 312 #define ND_OPT_RDNSS 25 /* RFC 6016 */ 313 #define ND_OPT_DNSSL 31 /* RFC 6016 */ 314 #define ND_OPT_MAX 31 315 316 struct nd_opt_route_info { /* route info */ 317 u_int8_t nd_opt_rti_type; 318 u_int8_t nd_opt_rti_len; 319 u_int8_t nd_opt_rti_prefixlen; 320 u_int8_t nd_opt_rti_flags; 321 u_int32_t nd_opt_rti_lifetime; 322 /* prefix follows */ 323 }; 324 325 struct nd_opt_prefix_info { /* prefix information */ 326 u_int8_t nd_opt_pi_type; 327 u_int8_t nd_opt_pi_len; 328 u_int8_t nd_opt_pi_prefix_len; 329 u_int8_t nd_opt_pi_flags_reserved; 330 u_int32_t nd_opt_pi_valid_time; 331 u_int32_t nd_opt_pi_preferred_time; 332 u_int32_t nd_opt_pi_reserved2; 333 struct in6_addr nd_opt_pi_prefix; 334 } __packed; 335 336 #define ND_OPT_PI_FLAG_ONLINK 0x80 337 #define ND_OPT_PI_FLAG_AUTO 0x40 338 339 struct nd_opt_rd_hdr { /* redirected header */ 340 u_int8_t nd_opt_rh_type; 341 u_int8_t nd_opt_rh_len; 342 u_int16_t nd_opt_rh_reserved1; 343 u_int32_t nd_opt_rh_reserved2; 344 /* followed by IP header and data */ 345 } __packed; 346 347 struct nd_opt_mtu { /* MTU option */ 348 u_int8_t nd_opt_mtu_type; 349 u_int8_t nd_opt_mtu_len; 350 u_int16_t nd_opt_mtu_reserved; 351 u_int32_t nd_opt_mtu_mtu; 352 } __packed; 353 354 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 355 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 356 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 357 #endif 358 struct nd_opt_nonce { 359 u_int8_t nd_opt_nonce_type; 360 u_int8_t nd_opt_nonce_len; 361 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 362 } __packed; 363 364 struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ 365 u_int8_t nd_opt_rdnss_type; 366 u_int8_t nd_opt_rdnss_len; 367 u_int16_t nd_opt_rdnss_reserved; 368 u_int32_t nd_opt_rdnss_lifetime; 369 /* followed by list of IP prefixes */ 370 } __packed; 371 372 struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ 373 u_int8_t nd_opt_dnssl_type; 374 u_int8_t nd_opt_dnssl_len; 375 u_int16_t nd_opt_dnssl_reserved; 376 u_int32_t nd_opt_dnssl_lifetime; 377 /* followed by list of IP prefixes */ 378 } __packed; 379 380 /* 381 * icmp6 namelookup 382 */ 383 384 struct icmp6_namelookup { 385 struct icmp6_hdr icmp6_nl_hdr; 386 u_int8_t icmp6_nl_nonce[8]; 387 int32_t icmp6_nl_ttl; 388 #if 0 389 u_int8_t icmp6_nl_len; 390 u_int8_t icmp6_nl_name[3]; 391 #endif 392 /* could be followed by options */ 393 } __packed; 394 395 /* 396 * icmp6 node information 397 */ 398 struct icmp6_nodeinfo { 399 struct icmp6_hdr icmp6_ni_hdr; 400 u_int8_t icmp6_ni_nonce[8]; 401 /* could be followed by reply data */ 402 } __packed; 403 404 #define ni_type icmp6_ni_hdr.icmp6_type 405 #define ni_code icmp6_ni_hdr.icmp6_code 406 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 407 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 408 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 409 410 #define NI_QTYPE_NOOP 0 /* NOOP */ 411 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 412 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 413 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 414 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 415 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 416 417 #if BYTE_ORDER == BIG_ENDIAN 418 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 419 #define NI_FQDN_FLAG_VALIDTTL 0x1 420 #elif BYTE_ORDER == LITTLE_ENDIAN 421 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 422 #define NI_FQDN_FLAG_VALIDTTL 0x0100 423 #endif 424 425 #ifdef NAME_LOOKUPS_04 426 #if BYTE_ORDER == BIG_ENDIAN 427 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 428 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 429 #define NI_NODEADDR_FLAG_GLOBAL 0x4 430 #define NI_NODEADDR_FLAG_ALL 0x8 431 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 432 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 433 #elif BYTE_ORDER == LITTLE_ENDIAN 434 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 435 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 436 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 437 #define NI_NODEADDR_FLAG_ALL 0x0800 438 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 439 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 440 #endif 441 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 442 #if BYTE_ORDER == BIG_ENDIAN 443 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 444 #define NI_NODEADDR_FLAG_ALL 0x2 445 #define NI_NODEADDR_FLAG_COMPAT 0x4 446 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 447 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 448 #define NI_NODEADDR_FLAG_GLOBAL 0x20 449 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 450 #elif BYTE_ORDER == LITTLE_ENDIAN 451 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 452 #define NI_NODEADDR_FLAG_ALL 0x0200 453 #define NI_NODEADDR_FLAG_COMPAT 0x0400 454 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 455 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 456 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 457 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 458 #endif 459 #endif 460 461 struct ni_reply_fqdn { 462 u_int32_t ni_fqdn_ttl; /* TTL */ 463 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 464 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 465 } __packed; 466 467 /* 468 * Router Renumbering. as router-renum-08.txt 469 */ 470 struct icmp6_router_renum { /* router renumbering header */ 471 struct icmp6_hdr rr_hdr; 472 u_int8_t rr_segnum; 473 u_int8_t rr_flags; 474 u_int16_t rr_maxdelay; 475 u_int32_t rr_reserved; 476 } __packed; 477 478 #define ICMP6_RR_FLAGS_TEST 0x80 479 #define ICMP6_RR_FLAGS_REQRESULT 0x40 480 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 481 #define ICMP6_RR_FLAGS_SPECSITE 0x10 482 #define ICMP6_RR_FLAGS_PREVDONE 0x08 483 484 #define rr_type rr_hdr.icmp6_type 485 #define rr_code rr_hdr.icmp6_code 486 #define rr_cksum rr_hdr.icmp6_cksum 487 #define rr_seqnum rr_hdr.icmp6_data32[0] 488 489 struct rr_pco_match { /* match prefix part */ 490 u_int8_t rpm_code; 491 u_int8_t rpm_len; 492 u_int8_t rpm_ordinal; 493 u_int8_t rpm_matchlen; 494 u_int8_t rpm_minlen; 495 u_int8_t rpm_maxlen; 496 u_int16_t rpm_reserved; 497 struct in6_addr rpm_prefix; 498 } __packed; 499 500 #define RPM_PCO_ADD 1 501 #define RPM_PCO_CHANGE 2 502 #define RPM_PCO_SETGLOBAL 3 503 #define RPM_PCO_MAX 4 504 505 struct rr_pco_use { /* use prefix part */ 506 u_int8_t rpu_uselen; 507 u_int8_t rpu_keeplen; 508 u_int8_t rpu_ramask; 509 u_int8_t rpu_raflags; 510 u_int32_t rpu_vltime; 511 u_int32_t rpu_pltime; 512 u_int32_t rpu_flags; 513 struct in6_addr rpu_prefix; 514 } __packed; 515 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 516 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 517 518 #if BYTE_ORDER == BIG_ENDIAN 519 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 520 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 521 #elif BYTE_ORDER == LITTLE_ENDIAN 522 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 523 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 524 #endif 525 526 struct rr_result { /* router renumbering result message */ 527 u_int16_t rrr_flags; 528 u_int8_t rrr_ordinal; 529 u_int8_t rrr_matchedlen; 530 u_int32_t rrr_ifid; 531 struct in6_addr rrr_prefix; 532 } __packed; 533 #if BYTE_ORDER == BIG_ENDIAN 534 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 535 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 536 #elif BYTE_ORDER == LITTLE_ENDIAN 537 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 538 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 539 #endif 540 541 /* 542 * icmp6 filter structures. 543 */ 544 545 struct icmp6_filter { 546 u_int32_t icmp6_filt[8]; 547 }; 548 549 #define ICMP6_FILTER_SETPASSALL(filterp) \ 550 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 551 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 552 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 553 #define ICMP6_FILTER_SETPASS(type, filterp) \ 554 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 555 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 556 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 557 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 558 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 559 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 560 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 561 562 /* 563 * Variables related to this implementation 564 * of the internet control message protocol version 6. 565 */ 566 567 /* 568 * IPv6 ICMP statistics. 569 * Each counter is an unsigned 64-bit value. 570 */ 571 #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 572 #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 573 #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 574 #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 575 /* space for 256 counters */ 576 #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 577 #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 578 #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 579 #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 580 /* 581 * number of responses; this member is inherited from the netinet code, 582 * but for netinet6 code, it is already available in outhist[]. 583 */ 584 #define ICMP6_STAT_REFLECT 263 585 #define ICMP6_STAT_INHIST 264 /* # of input messages */ 586 /* space for 256 counters */ 587 #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 588 #define ICMP6_STAT_OUTERRHIST 521 589 /* space for 13 counters */ 590 #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 591 #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 592 #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 593 #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 594 #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 595 #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 596 #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 597 #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 598 599 #define ICMP6_NSTATS 542 600 601 #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 602 #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 603 #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 604 #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 605 #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 606 #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 607 #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 608 #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 609 #define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 610 #define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 611 #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 612 #define ICMP6_ERRSTAT_REDIRECT 11 613 #define ICMP6_ERRSTAT_UNKNOWN 12 614 615 /* 616 * Names for ICMP sysctl objects 617 */ 618 #define ICMPV6CTL_STATS 1 619 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 620 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 621 #if 0 /*obsoleted*/ 622 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 623 #endif 624 #define ICMPV6CTL_ND6_PRUNE 6 625 #define ICMPV6CTL_ND6_DELAY 8 626 #define ICMPV6CTL_ND6_UMAXTRIES 9 627 #define ICMPV6CTL_ND6_MMAXTRIES 10 628 #define ICMPV6CTL_ND6_USELOOPBACK 11 629 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 630 #define ICMPV6CTL_NODEINFO 13 631 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 632 #define ICMPV6CTL_ND6_MAXNUDHINT 15 633 #define ICMPV6CTL_MTUDISC_HIWAT 16 634 #define ICMPV6CTL_MTUDISC_LOWAT 17 635 #define ICMPV6CTL_ND6_DEBUG 18 636 #define ICMPV6CTL_ND6_DRLIST 19 637 #define ICMPV6CTL_ND6_PRLIST 20 638 #define ICMPV6CTL_ND6_MAXQLEN 24 639 640 #ifdef _KERNEL 641 struct rtentry; 642 643 void icmp6_init(void); 644 void icmp6_paramerror(struct mbuf *, int); 645 void icmp6_error(struct mbuf *, int, int, int); 646 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 647 int icmp6_input(struct mbuf **, int *, int); 648 void icmp6_fasttimo(void); 649 void icmp6_prepare(struct mbuf *); 650 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 651 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 652 653 void icmp6_statinc(u_int); 654 655 struct ip6ctlparam; 656 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 657 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 658 659 /* XXX: is this the right place for these macros? */ 660 #define icmp6_ifstat_inc(ifp, tag) \ 661 do { \ 662 if (ifp) \ 663 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 664 } while (/*CONSTCOND*/ 0) 665 666 #define icmp6_ifoutstat_inc(ifp, type, code) \ 667 do { \ 668 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 669 switch(type) { \ 670 case ICMP6_DST_UNREACH: \ 671 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 672 if (code == ICMP6_DST_UNREACH_ADMIN) \ 673 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 674 break; \ 675 case ICMP6_PACKET_TOO_BIG: \ 676 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 677 break; \ 678 case ICMP6_TIME_EXCEEDED: \ 679 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 680 break; \ 681 case ICMP6_PARAM_PROB: \ 682 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 683 break; \ 684 case ICMP6_ECHO_REQUEST: \ 685 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 686 break; \ 687 case ICMP6_ECHO_REPLY: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 689 break; \ 690 case MLD_LISTENER_QUERY: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 692 break; \ 693 case MLD_LISTENER_REPORT: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 695 break; \ 696 case MLD_LISTENER_DONE: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 698 break; \ 699 case ND_ROUTER_SOLICIT: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 701 break; \ 702 case ND_ROUTER_ADVERT: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 704 break; \ 705 case ND_NEIGHBOR_SOLICIT: \ 706 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 707 break; \ 708 case ND_NEIGHBOR_ADVERT: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 710 break; \ 711 case ND_REDIRECT: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 713 break; \ 714 } \ 715 } while (/*CONSTCOND*/ 0) 716 717 extern int icmp6_rediraccept; /* accept/process redirects */ 718 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 719 #endif /* _KERNEL */ 720 721 #ifdef ICMP6_STRINGS 722 /* Info: http://www.iana.org/assignments/icmpv6-parameters */ 723 724 static const char * const icmp6_type_err[] = { 725 "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob", 726 NULL 727 }; 728 729 static const char * const icmp6_type_info[] = { 730 "echo", "echoreply", 731 "mcastlistenq", "mcastlistenrep", "mcastlistendone", 732 "rtsol", "rtadv", "neighsol", "neighadv", "redirect", 733 "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep", 734 "mcastlistenrep2", "haad_req", "haad_rep", 735 "mobile_psol", "mobile_padv", "cga_sol", "cga_adv", 736 "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm", 737 "fmipv6_msg", "rpl_control", NULL 738 }; 739 740 static const char * const icmp6_code_none[] = { "none", NULL }; 741 742 static const char * const icmp6_code_unreach[] = { 743 "noroute", "admin", "beyondscope", "addr", "port", 744 "srcaddr_policy", "reject_route", "source_route_err", NULL 745 }; 746 747 static const char * const icmp6_code_timxceed[] = { 748 "intrans", "reass", NULL 749 }; 750 751 static const char * const icmp6_code_paramprob[] = { 752 "hdr_field", "nxthdr_type", "option", NULL 753 }; 754 755 /* not all informational icmps that have codes have a names array */ 756 #endif 757 758 #endif /* !_NETINET_ICMP6_H_ */ 759
Indexes created Thu Oct 16 14:10:15 GMT 2025