icmp6.h revision 1.27
1 /* $NetBSD: icmp6.h,v 1.27 2003/06/06 09:37:29 itojun 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. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 67 */ 68 69 #ifndef _NETINET_ICMP6_H_ 70 #define _NETINET_ICMP6_H_ 71 72 #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 } __attribute__((__packed__)); 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 */ 105 106 /* RFC2292 decls */ 107 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 108 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 109 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 110 111 #ifndef _KERNEL 112 /* the followings are for backward compatibility to old KAME apps. */ 113 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 114 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 115 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 116 #endif 117 118 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 119 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 120 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 121 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 122 #define ND_REDIRECT 137 /* redirect */ 123 124 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 125 126 #define ICMP6_WRUREQUEST 139 /* who are you request */ 127 #define ICMP6_WRUREPLY 140 /* who are you reply */ 128 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 129 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 130 #define ICMP6_NI_QUERY 139 /* node information request */ 131 #define ICMP6_NI_REPLY 140 /* node information reply */ 132 133 /* The definitions below are experimental. TBA */ 134 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 135 #define MLD_MTRACE 201 /* mtrace messages */ 136 137 #ifndef _KERNEL 138 /* the followings are for backward compatibility to old KAME apps. */ 139 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 140 #define MLD6_MTRACE MLD_MTRACE 141 #endif 142 143 #define ICMP6_MAXTYPE 201 144 145 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 146 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 147 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 148 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 149 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 150 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 151 152 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 153 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 154 155 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 156 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 157 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 158 159 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 160 161 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 162 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 163 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 164 165 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 166 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 167 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 168 169 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 170 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 171 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 172 173 /* Used in kernel only */ 174 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 175 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 176 177 /* 178 * Multicast Listener Discovery 179 */ 180 struct mld_hdr { 181 struct icmp6_hdr mld_icmp6_hdr; 182 struct in6_addr mld_addr; /* multicast address */ 183 } __attribute__((__packed__)); 184 185 /* definitions to provide backward compatibility to old KAME applications */ 186 #ifndef _KERNEL 187 #define mld6_hdr mld_hdr 188 #define mld6_type mld_type 189 #define mld6_code mld_code 190 #define mld6_cksum mld_cksum 191 #define mld6_maxdelay mld_maxdelay 192 #define mld6_reserved mld_reserved 193 #define mld6_addr mld_addr 194 #endif 195 196 /* shortcut macro definitions */ 197 #define mld_type mld_icmp6_hdr.icmp6_type 198 #define mld_code mld_icmp6_hdr.icmp6_code 199 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 200 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 201 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 202 203 /* 204 * Neighbor Discovery 205 */ 206 207 struct nd_router_solicit { /* router solicitation */ 208 struct icmp6_hdr nd_rs_hdr; 209 /* could be followed by options */ 210 } __attribute__((__packed__)); 211 212 #define nd_rs_type nd_rs_hdr.icmp6_type 213 #define nd_rs_code nd_rs_hdr.icmp6_code 214 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 215 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 216 217 struct nd_router_advert { /* router advertisement */ 218 struct icmp6_hdr nd_ra_hdr; 219 u_int32_t nd_ra_reachable; /* reachable time */ 220 u_int32_t nd_ra_retransmit; /* retransmit timer */ 221 /* could be followed by options */ 222 } __attribute__((__packed__)); 223 224 #define nd_ra_type nd_ra_hdr.icmp6_type 225 #define nd_ra_code nd_ra_hdr.icmp6_code 226 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 227 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 228 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 229 #define ND_RA_FLAG_MANAGED 0x80 230 #define ND_RA_FLAG_OTHER 0x40 231 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 232 233 struct nd_neighbor_solicit { /* neighbor solicitation */ 234 struct icmp6_hdr nd_ns_hdr; 235 struct in6_addr nd_ns_target; /*target address */ 236 /* could be followed by options */ 237 } __attribute__((__packed__)); 238 239 #define nd_ns_type nd_ns_hdr.icmp6_type 240 #define nd_ns_code nd_ns_hdr.icmp6_code 241 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 242 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 243 244 struct nd_neighbor_advert { /* neighbor advertisement */ 245 struct icmp6_hdr nd_na_hdr; 246 struct in6_addr nd_na_target; /* target address */ 247 /* could be followed by options */ 248 } __attribute__((__packed__)); 249 250 #define nd_na_type nd_na_hdr.icmp6_type 251 #define nd_na_code nd_na_hdr.icmp6_code 252 #define nd_na_cksum nd_na_hdr.icmp6_cksum 253 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 254 #if BYTE_ORDER == BIG_ENDIAN 255 #define ND_NA_FLAG_ROUTER 0x80000000 256 #define ND_NA_FLAG_SOLICITED 0x40000000 257 #define ND_NA_FLAG_OVERRIDE 0x20000000 258 #else 259 #if BYTE_ORDER == LITTLE_ENDIAN 260 #define ND_NA_FLAG_ROUTER 0x80 261 #define ND_NA_FLAG_SOLICITED 0x40 262 #define ND_NA_FLAG_OVERRIDE 0x20 263 #endif 264 #endif 265 266 struct nd_redirect { /* redirect */ 267 struct icmp6_hdr nd_rd_hdr; 268 struct in6_addr nd_rd_target; /* target address */ 269 struct in6_addr nd_rd_dst; /* destination address */ 270 /* could be followed by options */ 271 } __attribute__((__packed__)); 272 273 #define nd_rd_type nd_rd_hdr.icmp6_type 274 #define nd_rd_code nd_rd_hdr.icmp6_code 275 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 276 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 277 278 struct nd_opt_hdr { /* Neighbor discovery option header */ 279 u_int8_t nd_opt_type; 280 u_int8_t nd_opt_len; 281 /* followed by option specific data*/ 282 } __attribute__((__packed__)); 283 284 #define ND_OPT_SOURCE_LINKADDR 1 285 #define ND_OPT_TARGET_LINKADDR 2 286 #define ND_OPT_PREFIX_INFORMATION 3 287 #define ND_OPT_REDIRECTED_HEADER 4 288 #define ND_OPT_MTU 5 289 290 struct nd_opt_prefix_info { /* prefix information */ 291 u_int8_t nd_opt_pi_type; 292 u_int8_t nd_opt_pi_len; 293 u_int8_t nd_opt_pi_prefix_len; 294 u_int8_t nd_opt_pi_flags_reserved; 295 u_int32_t nd_opt_pi_valid_time; 296 u_int32_t nd_opt_pi_preferred_time; 297 u_int32_t nd_opt_pi_reserved2; 298 struct in6_addr nd_opt_pi_prefix; 299 } __attribute__((__packed__)); 300 301 #define ND_OPT_PI_FLAG_ONLINK 0x80 302 #define ND_OPT_PI_FLAG_AUTO 0x40 303 304 struct nd_opt_rd_hdr { /* redirected header */ 305 u_int8_t nd_opt_rh_type; 306 u_int8_t nd_opt_rh_len; 307 u_int16_t nd_opt_rh_reserved1; 308 u_int32_t nd_opt_rh_reserved2; 309 /* followed by IP header and data */ 310 } __attribute__((__packed__)); 311 312 struct nd_opt_mtu { /* MTU option */ 313 u_int8_t nd_opt_mtu_type; 314 u_int8_t nd_opt_mtu_len; 315 u_int16_t nd_opt_mtu_reserved; 316 u_int32_t nd_opt_mtu_mtu; 317 } __attribute__((__packed__)); 318 319 /* 320 * icmp6 namelookup 321 */ 322 323 struct icmp6_namelookup { 324 struct icmp6_hdr icmp6_nl_hdr; 325 u_int8_t icmp6_nl_nonce[8]; 326 int32_t icmp6_nl_ttl; 327 #if 0 328 u_int8_t icmp6_nl_len; 329 u_int8_t icmp6_nl_name[3]; 330 #endif 331 /* could be followed by options */ 332 } __attribute__((__packed__)); 333 334 /* 335 * icmp6 node information 336 */ 337 struct icmp6_nodeinfo { 338 struct icmp6_hdr icmp6_ni_hdr; 339 u_int8_t icmp6_ni_nonce[8]; 340 /* could be followed by reply data */ 341 } __attribute__((__packed__)); 342 343 #define ni_type icmp6_ni_hdr.icmp6_type 344 #define ni_code icmp6_ni_hdr.icmp6_code 345 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 346 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 347 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 348 349 #define NI_QTYPE_NOOP 0 /* NOOP */ 350 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 351 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 352 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 353 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 354 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 355 356 #if BYTE_ORDER == BIG_ENDIAN 357 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 358 #define NI_FQDN_FLAG_VALIDTTL 0x1 359 #elif BYTE_ORDER == LITTLE_ENDIAN 360 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 361 #define NI_FQDN_FLAG_VALIDTTL 0x0100 362 #endif 363 364 #ifdef NAME_LOOKUPS_04 365 #if BYTE_ORDER == BIG_ENDIAN 366 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 367 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 368 #define NI_NODEADDR_FLAG_GLOBAL 0x4 369 #define NI_NODEADDR_FLAG_ALL 0x8 370 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 371 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 372 #elif BYTE_ORDER == LITTLE_ENDIAN 373 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 374 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 375 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 376 #define NI_NODEADDR_FLAG_ALL 0x0800 377 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 378 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 379 #endif 380 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 381 #if BYTE_ORDER == BIG_ENDIAN 382 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 383 #define NI_NODEADDR_FLAG_ALL 0x2 384 #define NI_NODEADDR_FLAG_COMPAT 0x4 385 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 386 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 387 #define NI_NODEADDR_FLAG_GLOBAL 0x20 388 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 389 #elif BYTE_ORDER == LITTLE_ENDIAN 390 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 391 #define NI_NODEADDR_FLAG_ALL 0x0200 392 #define NI_NODEADDR_FLAG_COMPAT 0x0400 393 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 394 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 395 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 396 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 397 #endif 398 #endif 399 400 struct ni_reply_fqdn { 401 u_int32_t ni_fqdn_ttl; /* TTL */ 402 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 403 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 404 } __attribute__((__packed__)); 405 406 /* 407 * Router Renumbering. as router-renum-08.txt 408 */ 409 struct icmp6_router_renum { /* router renumbering header */ 410 struct icmp6_hdr rr_hdr; 411 u_int8_t rr_segnum; 412 u_int8_t rr_flags; 413 u_int16_t rr_maxdelay; 414 u_int32_t rr_reserved; 415 } __attribute__((__packed__)); 416 417 #define ICMP6_RR_FLAGS_TEST 0x80 418 #define ICMP6_RR_FLAGS_REQRESULT 0x40 419 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 420 #define ICMP6_RR_FLAGS_SPECSITE 0x10 421 #define ICMP6_RR_FLAGS_PREVDONE 0x08 422 423 #define rr_type rr_hdr.icmp6_type 424 #define rr_code rr_hdr.icmp6_code 425 #define rr_cksum rr_hdr.icmp6_cksum 426 #define rr_seqnum rr_hdr.icmp6_data32[0] 427 428 struct rr_pco_match { /* match prefix part */ 429 u_int8_t rpm_code; 430 u_int8_t rpm_len; 431 u_int8_t rpm_ordinal; 432 u_int8_t rpm_matchlen; 433 u_int8_t rpm_minlen; 434 u_int8_t rpm_maxlen; 435 u_int16_t rpm_reserved; 436 struct in6_addr rpm_prefix; 437 } __attribute__((__packed__)); 438 439 #define RPM_PCO_ADD 1 440 #define RPM_PCO_CHANGE 2 441 #define RPM_PCO_SETGLOBAL 3 442 #define RPM_PCO_MAX 4 443 444 struct rr_pco_use { /* use prefix part */ 445 u_int8_t rpu_uselen; 446 u_int8_t rpu_keeplen; 447 u_int8_t rpu_ramask; 448 u_int8_t rpu_raflags; 449 u_int32_t rpu_vltime; 450 u_int32_t rpu_pltime; 451 u_int32_t rpu_flags; 452 struct in6_addr rpu_prefix; 453 } __attribute__((__packed__)); 454 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 455 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 456 457 #if BYTE_ORDER == BIG_ENDIAN 458 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 459 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 460 #elif BYTE_ORDER == LITTLE_ENDIAN 461 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 462 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 463 #endif 464 465 struct rr_result { /* router renumbering result message */ 466 u_int16_t rrr_flags; 467 u_int8_t rrr_ordinal; 468 u_int8_t rrr_matchedlen; 469 u_int32_t rrr_ifid; 470 struct in6_addr rrr_prefix; 471 } __attribute__((__packed__)); 472 #if BYTE_ORDER == BIG_ENDIAN 473 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 474 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 475 #elif BYTE_ORDER == LITTLE_ENDIAN 476 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 477 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 478 #endif 479 480 /* 481 * icmp6 filter structures. 482 */ 483 484 struct icmp6_filter { 485 u_int32_t icmp6_filt[8]; 486 }; 487 488 #ifdef _KERNEL 489 #define ICMP6_FILTER_SETPASSALL(filterp) \ 490 do { \ 491 int i; u_char *p; \ 492 p = (u_char *)filterp; \ 493 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 494 p[i] = 0xff; \ 495 } while (/*CONSTCOND*/ 0) 496 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 497 bzero(filterp, sizeof(struct icmp6_filter)) 498 #else /* _KERNEL */ 499 #define ICMP6_FILTER_SETPASSALL(filterp) \ 500 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 501 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 502 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 503 #endif /* _KERNEL */ 504 505 #define ICMP6_FILTER_SETPASS(type, filterp) \ 506 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 507 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 508 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 509 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 510 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 511 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 512 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 513 514 /* 515 * Variables related to this implementation 516 * of the internet control message protocol version 6. 517 */ 518 struct icmp6errstat { 519 u_quad_t icp6errs_dst_unreach_noroute; 520 u_quad_t icp6errs_dst_unreach_admin; 521 u_quad_t icp6errs_dst_unreach_beyondscope; 522 u_quad_t icp6errs_dst_unreach_addr; 523 u_quad_t icp6errs_dst_unreach_noport; 524 u_quad_t icp6errs_packet_too_big; 525 u_quad_t icp6errs_time_exceed_transit; 526 u_quad_t icp6errs_time_exceed_reassembly; 527 u_quad_t icp6errs_paramprob_header; 528 u_quad_t icp6errs_paramprob_nextheader; 529 u_quad_t icp6errs_paramprob_option; 530 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 531 u_quad_t icp6errs_unknown; 532 }; 533 534 struct icmp6stat { 535 /* statistics related to icmp6 packets generated */ 536 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 537 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 538 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 539 u_quad_t icp6s_outhist[256]; 540 /* statistics related to input message processed */ 541 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 542 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 543 u_quad_t icp6s_checksum; /* bad checksum */ 544 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 545 /* 546 * number of responses: this member is inherited from netinet code, but 547 * for netinet6 code, it is already available in icp6s_outhist[]. 548 */ 549 u_quad_t icp6s_reflect; 550 u_quad_t icp6s_inhist[256]; 551 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 552 struct icmp6errstat icp6s_outerrhist; 553 #define icp6s_odst_unreach_noroute \ 554 icp6s_outerrhist.icp6errs_dst_unreach_noroute 555 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 556 #define icp6s_odst_unreach_beyondscope \ 557 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 558 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 559 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 560 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 561 #define icp6s_otime_exceed_transit \ 562 icp6s_outerrhist.icp6errs_time_exceed_transit 563 #define icp6s_otime_exceed_reassembly \ 564 icp6s_outerrhist.icp6errs_time_exceed_reassembly 565 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 566 #define icp6s_oparamprob_nextheader \ 567 icp6s_outerrhist.icp6errs_paramprob_nextheader 568 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 569 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 570 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 571 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 572 u_quad_t icp6s_nd_badopt; /* bad ND options */ 573 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 574 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 575 u_quad_t icp6s_badrs; /* bad router advertisement */ 576 u_quad_t icp6s_badra; /* bad router advertisement */ 577 u_quad_t icp6s_badredirect; /* bad redirect message */ 578 }; 579 580 /* 581 * Names for ICMP sysctl objects 582 */ 583 #define ICMPV6CTL_STATS 1 584 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 585 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 586 #if 0 /*obsoleted*/ 587 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 588 #endif 589 #define ICMPV6CTL_ND6_PRUNE 6 590 #define ICMPV6CTL_ND6_DELAY 8 591 #define ICMPV6CTL_ND6_UMAXTRIES 9 592 #define ICMPV6CTL_ND6_MMAXTRIES 10 593 #define ICMPV6CTL_ND6_USELOOPBACK 11 594 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 595 #define ICMPV6CTL_NODEINFO 13 596 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 597 #define ICMPV6CTL_ND6_MAXNUDHINT 15 598 #define ICMPV6CTL_MTUDISC_HIWAT 16 599 #define ICMPV6CTL_MTUDISC_LOWAT 17 600 #define ICMPV6CTL_ND6_DEBUG 18 601 #define ICMPV6CTL_ND6_DRLIST 19 602 #define ICMPV6CTL_ND6_PRLIST 20 603 #define ICMPV6CTL_MAXID 21 604 605 #define ICMPV6CTL_NAMES { \ 606 { 0, 0 }, \ 607 { 0, 0 }, \ 608 { "rediraccept", CTLTYPE_INT }, \ 609 { "redirtimeout", CTLTYPE_INT }, \ 610 { 0, 0 }, \ 611 { 0, 0 }, \ 612 { "nd6_prune", CTLTYPE_INT }, \ 613 { 0, 0 }, \ 614 { "nd6_delay", CTLTYPE_INT }, \ 615 { "nd6_umaxtries", CTLTYPE_INT }, \ 616 { "nd6_mmaxtries", CTLTYPE_INT }, \ 617 { "nd6_useloopback", CTLTYPE_INT }, \ 618 { 0, 0 }, \ 619 { "nodeinfo", CTLTYPE_INT }, \ 620 { "errppslimit", CTLTYPE_INT }, \ 621 { "nd6_maxnudhint", CTLTYPE_INT }, \ 622 { "mtudisc_hiwat", CTLTYPE_INT }, \ 623 { "mtudisc_lowat", CTLTYPE_INT }, \ 624 { "nd6_debug", CTLTYPE_INT }, \ 625 { 0, 0 }, \ 626 { 0, 0 }, \ 627 } 628 629 #define RTF_PROBEMTU RTF_PROTO1 630 631 #ifdef _KERNEL 632 # ifdef __STDC__ 633 struct rtentry; 634 struct rttimer; 635 struct in6_multi; 636 # endif 637 void icmp6_init __P((void)); 638 void icmp6_paramerror __P((struct mbuf *, int)); 639 void icmp6_error __P((struct mbuf *, int, int, int)); 640 int icmp6_input __P((struct mbuf **, int *, int)); 641 void icmp6_fasttimo __P((void)); 642 void icmp6_reflect __P((struct mbuf *, size_t)); 643 void icmp6_prepare __P((struct mbuf *)); 644 void icmp6_redirect_input __P((struct mbuf *, int)); 645 void icmp6_redirect_output __P((struct mbuf *, struct rtentry *)); 646 int icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 647 648 struct ip6ctlparam; 649 void icmp6_mtudisc_update __P((struct ip6ctlparam *, int)); 650 void icmp6_mtudisc_callback_register __P((void (*)(struct in6_addr *))); 651 652 /* XXX: is this the right place for these macros? */ 653 #define icmp6_ifstat_inc(ifp, tag) \ 654 do { \ 655 if (ifp) \ 656 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 657 } while (/*CONSTCOND*/ 0) 658 659 #define icmp6_ifoutstat_inc(ifp, type, code) \ 660 do { \ 661 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 662 switch(type) { \ 663 case ICMP6_DST_UNREACH: \ 664 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 665 if (code == ICMP6_DST_UNREACH_ADMIN) \ 666 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 667 break; \ 668 case ICMP6_PACKET_TOO_BIG: \ 669 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 670 break; \ 671 case ICMP6_TIME_EXCEEDED: \ 672 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 673 break; \ 674 case ICMP6_PARAM_PROB: \ 675 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 676 break; \ 677 case ICMP6_ECHO_REQUEST: \ 678 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 679 break; \ 680 case ICMP6_ECHO_REPLY: \ 681 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 682 break; \ 683 case MLD_LISTENER_QUERY: \ 684 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 685 break; \ 686 case MLD_LISTENER_REPORT: \ 687 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 688 break; \ 689 case MLD_LISTENER_DONE: \ 690 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 691 break; \ 692 case ND_ROUTER_SOLICIT: \ 693 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 694 break; \ 695 case ND_ROUTER_ADVERT: \ 696 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 697 break; \ 698 case ND_NEIGHBOR_SOLICIT: \ 699 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 700 break; \ 701 case ND_NEIGHBOR_ADVERT: \ 702 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 703 break; \ 704 case ND_REDIRECT: \ 705 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 706 break; \ 707 } \ 708 } while (/*CONSTCOND*/ 0) 709 710 extern int icmp6_rediraccept; /* accept/process redirects */ 711 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 712 #endif /* _KERNEL */ 713 714 #endif /* not _NETINET_ICMP6_H_ */ 715
Indexes created Wed Oct 15 16:09:53 GMT 2025