icmp6.h revision 1.42.4.1
1 /* $NetBSD: icmp6.h,v 1.42.4.1 2012/04/17 00:08:40 yamt 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 */ 101 102 /* RFC2292 decls */ 103 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 104 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 106 107 #ifndef _KERNEL 108 /* the followings are for backward compatibility to old KAME apps. */ 109 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 110 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 111 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 112 #endif 113 114 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 115 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 116 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 117 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 118 #define ND_REDIRECT 137 /* redirect */ 119 120 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 121 122 #define ICMP6_WRUREQUEST 139 /* who are you request */ 123 #define ICMP6_WRUREPLY 140 /* who are you reply */ 124 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 125 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 126 #define ICMP6_NI_QUERY 139 /* node information request */ 127 #define ICMP6_NI_REPLY 140 /* node information reply */ 128 129 /* The definitions below are experimental. TBA */ 130 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 131 #define MLD_MTRACE 201 /* mtrace messages */ 132 133 #ifndef _KERNEL 134 /* the followings are for backward compatibility to old KAME apps. */ 135 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 136 #define MLD6_MTRACE MLD_MTRACE 137 #endif 138 139 #define ICMP6_MAXTYPE 201 140 141 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 142 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 143 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 144 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 145 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 146 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 147 148 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 149 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 150 151 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 152 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 153 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 154 155 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 156 157 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 158 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 159 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 160 161 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 162 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 163 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 164 165 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 166 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 167 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 168 169 /* Used in kernel only */ 170 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 171 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 172 173 /* 174 * Multicast Listener Discovery 175 */ 176 struct mld_hdr { 177 struct icmp6_hdr mld_icmp6_hdr; 178 struct in6_addr mld_addr; /* multicast address */ 179 } __packed; 180 181 /* definitions to provide backward compatibility to old KAME applications */ 182 #ifndef _KERNEL 183 #define mld6_hdr mld_hdr 184 #define mld6_type mld_type 185 #define mld6_code mld_code 186 #define mld6_cksum mld_cksum 187 #define mld6_maxdelay mld_maxdelay 188 #define mld6_reserved mld_reserved 189 #define mld6_addr mld_addr 190 #endif 191 192 /* shortcut macro definitions */ 193 #define mld_type mld_icmp6_hdr.icmp6_type 194 #define mld_code mld_icmp6_hdr.icmp6_code 195 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 196 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 197 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 198 199 #define MLD_MINLEN 24 200 201 /* 202 * Neighbor Discovery 203 */ 204 205 struct nd_router_solicit { /* router solicitation */ 206 struct icmp6_hdr nd_rs_hdr; 207 /* could be followed by options */ 208 } __packed; 209 210 #define nd_rs_type nd_rs_hdr.icmp6_type 211 #define nd_rs_code nd_rs_hdr.icmp6_code 212 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 213 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 214 215 struct nd_router_advert { /* router advertisement */ 216 struct icmp6_hdr nd_ra_hdr; 217 u_int32_t nd_ra_reachable; /* reachable time */ 218 u_int32_t nd_ra_retransmit; /* retransmit timer */ 219 /* could be followed by options */ 220 } __packed; 221 222 #define nd_ra_type nd_ra_hdr.icmp6_type 223 #define nd_ra_code nd_ra_hdr.icmp6_code 224 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 225 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 226 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 227 #define ND_RA_FLAG_MANAGED 0x80 228 #define ND_RA_FLAG_OTHER 0x40 229 #define ND_RA_FLAG_HOME_AGENT 0x20 230 231 /* 232 * Router preference values based on RFC4191. 233 */ 234 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 235 236 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 237 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 238 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 239 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 240 241 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 242 243 struct nd_neighbor_solicit { /* neighbor solicitation */ 244 struct icmp6_hdr nd_ns_hdr; 245 struct in6_addr nd_ns_target; /*target address */ 246 /* could be followed by options */ 247 } __packed; 248 249 #define nd_ns_type nd_ns_hdr.icmp6_type 250 #define nd_ns_code nd_ns_hdr.icmp6_code 251 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 252 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 253 254 struct nd_neighbor_advert { /* neighbor advertisement */ 255 struct icmp6_hdr nd_na_hdr; 256 struct in6_addr nd_na_target; /* target address */ 257 /* could be followed by options */ 258 } __packed; 259 260 #define nd_na_type nd_na_hdr.icmp6_type 261 #define nd_na_code nd_na_hdr.icmp6_code 262 #define nd_na_cksum nd_na_hdr.icmp6_cksum 263 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 264 #if BYTE_ORDER == BIG_ENDIAN 265 #define ND_NA_FLAG_ROUTER 0x80000000 266 #define ND_NA_FLAG_SOLICITED 0x40000000 267 #define ND_NA_FLAG_OVERRIDE 0x20000000 268 #else 269 #if BYTE_ORDER == LITTLE_ENDIAN 270 #define ND_NA_FLAG_ROUTER 0x80 271 #define ND_NA_FLAG_SOLICITED 0x40 272 #define ND_NA_FLAG_OVERRIDE 0x20 273 #endif 274 #endif 275 276 struct nd_redirect { /* redirect */ 277 struct icmp6_hdr nd_rd_hdr; 278 struct in6_addr nd_rd_target; /* target address */ 279 struct in6_addr nd_rd_dst; /* destination address */ 280 /* could be followed by options */ 281 } __packed; 282 283 #define nd_rd_type nd_rd_hdr.icmp6_type 284 #define nd_rd_code nd_rd_hdr.icmp6_code 285 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 286 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 287 288 struct nd_opt_hdr { /* Neighbor discovery option header */ 289 u_int8_t nd_opt_type; 290 u_int8_t nd_opt_len; 291 /* followed by option specific data*/ 292 } __packed; 293 294 #define ND_OPT_SOURCE_LINKADDR 1 295 #define ND_OPT_TARGET_LINKADDR 2 296 #define ND_OPT_PREFIX_INFORMATION 3 297 #define ND_OPT_REDIRECTED_HEADER 4 298 #define ND_OPT_MTU 5 299 #define ND_OPT_ADVINTERVAL 7 300 #define ND_OPT_HOMEAGENT_INFO 8 301 #define ND_OPT_SOURCE_ADDRLIST 9 302 #define ND_OPT_TARGET_ADDRLIST 10 303 #define ND_OPT_MAP 23 /* RFC 5380 */ 304 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 305 #define ND_OPT_RDNSS 25 /* RFC 6016 */ 306 #define ND_OPT_DNSSL 31 /* RFC 6016 */ 307 308 struct nd_opt_route_info { /* route info */ 309 u_int8_t nd_opt_rti_type; 310 u_int8_t nd_opt_rti_len; 311 u_int8_t nd_opt_rti_prefixlen; 312 u_int8_t nd_opt_rti_flags; 313 u_int32_t nd_opt_rti_lifetime; 314 /* prefix follows */ 315 }; 316 317 struct nd_opt_prefix_info { /* prefix information */ 318 u_int8_t nd_opt_pi_type; 319 u_int8_t nd_opt_pi_len; 320 u_int8_t nd_opt_pi_prefix_len; 321 u_int8_t nd_opt_pi_flags_reserved; 322 u_int32_t nd_opt_pi_valid_time; 323 u_int32_t nd_opt_pi_preferred_time; 324 u_int32_t nd_opt_pi_reserved2; 325 struct in6_addr nd_opt_pi_prefix; 326 } __packed; 327 328 #define ND_OPT_PI_FLAG_ONLINK 0x80 329 #define ND_OPT_PI_FLAG_AUTO 0x40 330 331 struct nd_opt_rd_hdr { /* redirected header */ 332 u_int8_t nd_opt_rh_type; 333 u_int8_t nd_opt_rh_len; 334 u_int16_t nd_opt_rh_reserved1; 335 u_int32_t nd_opt_rh_reserved2; 336 /* followed by IP header and data */ 337 } __packed; 338 339 struct nd_opt_mtu { /* MTU option */ 340 u_int8_t nd_opt_mtu_type; 341 u_int8_t nd_opt_mtu_len; 342 u_int16_t nd_opt_mtu_reserved; 343 u_int32_t nd_opt_mtu_mtu; 344 } __packed; 345 346 struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ 347 u_int8_t nd_opt_rdnss_type; 348 u_int8_t nd_opt_rdnss_len; 349 u_int16_t nd_opt_rdnss_reserved; 350 u_int32_t nd_opt_rdnss_lifetime; 351 /* followed by list of IP prefixes */ 352 } __packed; 353 354 struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ 355 u_int8_t nd_opt_dnssl_type; 356 u_int8_t nd_opt_dnssl_len; 357 u_int16_t nd_opt_dnssl_reserved; 358 u_int32_t nd_opt_dnssl_lifetime; 359 /* followed by list of IP prefixes */ 360 } __packed; 361 362 /* 363 * icmp6 namelookup 364 */ 365 366 struct icmp6_namelookup { 367 struct icmp6_hdr icmp6_nl_hdr; 368 u_int8_t icmp6_nl_nonce[8]; 369 int32_t icmp6_nl_ttl; 370 #if 0 371 u_int8_t icmp6_nl_len; 372 u_int8_t icmp6_nl_name[3]; 373 #endif 374 /* could be followed by options */ 375 } __packed; 376 377 /* 378 * icmp6 node information 379 */ 380 struct icmp6_nodeinfo { 381 struct icmp6_hdr icmp6_ni_hdr; 382 u_int8_t icmp6_ni_nonce[8]; 383 /* could be followed by reply data */ 384 } __packed; 385 386 #define ni_type icmp6_ni_hdr.icmp6_type 387 #define ni_code icmp6_ni_hdr.icmp6_code 388 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 389 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 390 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 391 392 #define NI_QTYPE_NOOP 0 /* NOOP */ 393 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 394 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 395 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 396 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 397 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 398 399 #if BYTE_ORDER == BIG_ENDIAN 400 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 401 #define NI_FQDN_FLAG_VALIDTTL 0x1 402 #elif BYTE_ORDER == LITTLE_ENDIAN 403 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 404 #define NI_FQDN_FLAG_VALIDTTL 0x0100 405 #endif 406 407 #ifdef NAME_LOOKUPS_04 408 #if BYTE_ORDER == BIG_ENDIAN 409 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 410 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 411 #define NI_NODEADDR_FLAG_GLOBAL 0x4 412 #define NI_NODEADDR_FLAG_ALL 0x8 413 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 414 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 415 #elif BYTE_ORDER == LITTLE_ENDIAN 416 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 417 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 418 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 419 #define NI_NODEADDR_FLAG_ALL 0x0800 420 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 421 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 422 #endif 423 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 424 #if BYTE_ORDER == BIG_ENDIAN 425 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 426 #define NI_NODEADDR_FLAG_ALL 0x2 427 #define NI_NODEADDR_FLAG_COMPAT 0x4 428 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 429 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 430 #define NI_NODEADDR_FLAG_GLOBAL 0x20 431 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 432 #elif BYTE_ORDER == LITTLE_ENDIAN 433 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 434 #define NI_NODEADDR_FLAG_ALL 0x0200 435 #define NI_NODEADDR_FLAG_COMPAT 0x0400 436 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 437 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 438 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 439 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 440 #endif 441 #endif 442 443 struct ni_reply_fqdn { 444 u_int32_t ni_fqdn_ttl; /* TTL */ 445 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 446 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 447 } __packed; 448 449 /* 450 * Router Renumbering. as router-renum-08.txt 451 */ 452 struct icmp6_router_renum { /* router renumbering header */ 453 struct icmp6_hdr rr_hdr; 454 u_int8_t rr_segnum; 455 u_int8_t rr_flags; 456 u_int16_t rr_maxdelay; 457 u_int32_t rr_reserved; 458 } __packed; 459 460 #define ICMP6_RR_FLAGS_TEST 0x80 461 #define ICMP6_RR_FLAGS_REQRESULT 0x40 462 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 463 #define ICMP6_RR_FLAGS_SPECSITE 0x10 464 #define ICMP6_RR_FLAGS_PREVDONE 0x08 465 466 #define rr_type rr_hdr.icmp6_type 467 #define rr_code rr_hdr.icmp6_code 468 #define rr_cksum rr_hdr.icmp6_cksum 469 #define rr_seqnum rr_hdr.icmp6_data32[0] 470 471 struct rr_pco_match { /* match prefix part */ 472 u_int8_t rpm_code; 473 u_int8_t rpm_len; 474 u_int8_t rpm_ordinal; 475 u_int8_t rpm_matchlen; 476 u_int8_t rpm_minlen; 477 u_int8_t rpm_maxlen; 478 u_int16_t rpm_reserved; 479 struct in6_addr rpm_prefix; 480 } __packed; 481 482 #define RPM_PCO_ADD 1 483 #define RPM_PCO_CHANGE 2 484 #define RPM_PCO_SETGLOBAL 3 485 #define RPM_PCO_MAX 4 486 487 struct rr_pco_use { /* use prefix part */ 488 u_int8_t rpu_uselen; 489 u_int8_t rpu_keeplen; 490 u_int8_t rpu_ramask; 491 u_int8_t rpu_raflags; 492 u_int32_t rpu_vltime; 493 u_int32_t rpu_pltime; 494 u_int32_t rpu_flags; 495 struct in6_addr rpu_prefix; 496 } __packed; 497 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 498 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 499 500 #if BYTE_ORDER == BIG_ENDIAN 501 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 502 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 503 #elif BYTE_ORDER == LITTLE_ENDIAN 504 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 505 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 506 #endif 507 508 struct rr_result { /* router renumbering result message */ 509 u_int16_t rrr_flags; 510 u_int8_t rrr_ordinal; 511 u_int8_t rrr_matchedlen; 512 u_int32_t rrr_ifid; 513 struct in6_addr rrr_prefix; 514 } __packed; 515 #if BYTE_ORDER == BIG_ENDIAN 516 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 517 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 518 #elif BYTE_ORDER == LITTLE_ENDIAN 519 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 520 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 521 #endif 522 523 /* 524 * icmp6 filter structures. 525 */ 526 527 struct icmp6_filter { 528 u_int32_t icmp6_filt[8]; 529 }; 530 531 #define ICMP6_FILTER_SETPASSALL(filterp) \ 532 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 533 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 534 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 535 #define ICMP6_FILTER_SETPASS(type, filterp) \ 536 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 537 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 538 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 539 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 540 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 541 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 542 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 543 544 /* 545 * Variables related to this implementation 546 * of the internet control message protocol version 6. 547 */ 548 549 /* 550 * IPv6 ICMP statistics. 551 * Each counter is an unsigned 64-bit value. 552 */ 553 #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 554 #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 555 #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 556 #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 557 /* space for 256 counters */ 558 #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 559 #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 560 #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 561 #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 562 /* 563 * number of responses; this member is inherited from the netinet code, 564 * but for netinet6 code, it is already available in outhist[]. 565 */ 566 #define ICMP6_STAT_REFLECT 263 567 #define ICMP6_STAT_INHIST 264 /* # of input messages */ 568 /* space for 256 counters */ 569 #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 570 #define ICMP6_STAT_OUTERRHIST 521 571 /* space for 13 counters */ 572 #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 573 #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 574 #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 575 #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 576 #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 577 #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 578 #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 579 #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 580 581 #define ICMP6_NSTATS 542 582 583 #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 584 #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 585 #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 586 #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 587 #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 588 #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 589 #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 590 #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 591 #define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 592 #define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 593 #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 594 #define ICMP6_ERRSTAT_REDIRECT 11 595 #define ICMP6_ERRSTAT_UNKNOWN 12 596 597 /* 598 * Names for ICMP sysctl objects 599 */ 600 #define ICMPV6CTL_STATS 1 601 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 602 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 603 #if 0 /*obsoleted*/ 604 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 605 #endif 606 #define ICMPV6CTL_ND6_PRUNE 6 607 #define ICMPV6CTL_ND6_DELAY 8 608 #define ICMPV6CTL_ND6_UMAXTRIES 9 609 #define ICMPV6CTL_ND6_MMAXTRIES 10 610 #define ICMPV6CTL_ND6_USELOOPBACK 11 611 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 612 #define ICMPV6CTL_NODEINFO 13 613 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 614 #define ICMPV6CTL_ND6_MAXNUDHINT 15 615 #define ICMPV6CTL_MTUDISC_HIWAT 16 616 #define ICMPV6CTL_MTUDISC_LOWAT 17 617 #define ICMPV6CTL_ND6_DEBUG 18 618 #define ICMPV6CTL_ND6_DRLIST 19 619 #define ICMPV6CTL_ND6_PRLIST 20 620 #define ICMPV6CTL_ND6_MAXQLEN 24 621 #define ICMPV6CTL_MAXID 25 622 623 #define ICMPV6CTL_NAMES { \ 624 { 0, 0 }, \ 625 { 0, 0 }, \ 626 { "rediraccept", CTLTYPE_INT }, \ 627 { "redirtimeout", CTLTYPE_INT }, \ 628 { 0, 0 }, \ 629 { 0, 0 }, \ 630 { "nd6_prune", CTLTYPE_INT }, \ 631 { 0, 0 }, \ 632 { "nd6_delay", CTLTYPE_INT }, \ 633 { "nd6_umaxtries", CTLTYPE_INT }, \ 634 { "nd6_mmaxtries", CTLTYPE_INT }, \ 635 { "nd6_useloopback", CTLTYPE_INT }, \ 636 { 0, 0 }, \ 637 { "nodeinfo", CTLTYPE_INT }, \ 638 { "errppslimit", CTLTYPE_INT }, \ 639 { "nd6_maxnudhint", CTLTYPE_INT }, \ 640 { "mtudisc_hiwat", CTLTYPE_INT }, \ 641 { "mtudisc_lowat", CTLTYPE_INT }, \ 642 { "nd6_debug", CTLTYPE_INT }, \ 643 { 0, 0 }, \ 644 { 0, 0 }, \ 645 { 0, 0 }, \ 646 { 0, 0 }, \ 647 { 0, 0 }, \ 648 { "nd6_maxqueuelen", CTLTYPE_INT }, \ 649 } 650 651 #ifdef _KERNEL 652 struct rtentry; 653 struct rttimer; 654 struct in6_multi; 655 656 void icmp6_init(void); 657 void icmp6_paramerror(struct mbuf *, int); 658 void icmp6_error(struct mbuf *, int, int, int); 659 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 660 int icmp6_input(struct mbuf **, int *, int); 661 void icmp6_fasttimo(void); 662 void icmp6_reflect(struct mbuf *, size_t); 663 void icmp6_prepare(struct mbuf *); 664 void icmp6_redirect_input(struct mbuf *, int); 665 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 666 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 667 668 void icmp6_statinc(u_int); 669 670 struct ip6ctlparam; 671 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 672 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 673 674 /* XXX: is this the right place for these macros? */ 675 #define icmp6_ifstat_inc(ifp, tag) \ 676 do { \ 677 if (ifp) \ 678 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 679 } while (/*CONSTCOND*/ 0) 680 681 #define icmp6_ifoutstat_inc(ifp, type, code) \ 682 do { \ 683 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 684 switch(type) { \ 685 case ICMP6_DST_UNREACH: \ 686 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 687 if (code == ICMP6_DST_UNREACH_ADMIN) \ 688 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 689 break; \ 690 case ICMP6_PACKET_TOO_BIG: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 692 break; \ 693 case ICMP6_TIME_EXCEEDED: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 695 break; \ 696 case ICMP6_PARAM_PROB: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 698 break; \ 699 case ICMP6_ECHO_REQUEST: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 701 break; \ 702 case ICMP6_ECHO_REPLY: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 704 break; \ 705 case MLD_LISTENER_QUERY: \ 706 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 707 break; \ 708 case MLD_LISTENER_REPORT: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 710 break; \ 711 case MLD_LISTENER_DONE: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 713 break; \ 714 case ND_ROUTER_SOLICIT: \ 715 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 716 break; \ 717 case ND_ROUTER_ADVERT: \ 718 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 719 break; \ 720 case ND_NEIGHBOR_SOLICIT: \ 721 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 722 break; \ 723 case ND_NEIGHBOR_ADVERT: \ 724 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 725 break; \ 726 case ND_REDIRECT: \ 727 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 728 break; \ 729 } \ 730 } while (/*CONSTCOND*/ 0) 731 732 extern int icmp6_rediraccept; /* accept/process redirects */ 733 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 734 #endif /* _KERNEL */ 735 736 #endif /* !_NETINET_ICMP6_H_ */ 737
Indexes created Wed Oct 15 16:09:53 GMT 2025