1 /* $OpenBSD: icmp6.h,v 1.32 2006/07/06 02:56:58 brad Exp $ */ 2 /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 62 */ 63 64 #ifndef _NETINET_ICMP6_H_ 65 #define _NETINET_ICMP6_H_ 66 67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 68 - sizeof(struct icmp6_hdr) */ 69 70 struct icmp6_hdr { 71 u_int8_t icmp6_type; /* type field */ 72 u_int8_t icmp6_code; /* code field */ 73 u_int16_t icmp6_cksum; /* checksum field */ 74 union { 75 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 76 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 77 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 78 } icmp6_dataun; 79 } __packed; 80 81 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 82 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 83 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 84 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 85 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 86 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 87 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 88 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 89 90 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 91 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 92 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 93 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 94 95 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 96 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 97 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 98 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 99 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 100 101 /* RFC2292 decls */ 102 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 104 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 105 106 #ifndef _KERNEL 107 /* the followings are for backward compatibility to old KAME apps. */ 108 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 109 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 110 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 111 #endif 112 113 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 114 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 115 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 116 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 117 #define ND_REDIRECT 137 /* redirect */ 118 119 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 120 121 #define ICMP6_WRUREQUEST 139 /* who are you request */ 122 #define ICMP6_WRUREPLY 140 /* who are you reply */ 123 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 124 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 125 #define ICMP6_NI_QUERY 139 /* node information request */ 126 #define ICMP6_NI_REPLY 140 /* node information reply */ 127 128 /* The definitions below are experimental. TBA */ 129 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 130 #define MLD_MTRACE 201 /* mtrace messages */ 131 132 #ifndef _KERNEL 133 /* the followings are for backward compatibility to old KAME apps. */ 134 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 135 #define MLD6_MTRACE MLD_MTRACE 136 #endif 137 138 #define ICMP6_MAXTYPE 201 139 140 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 141 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 142 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 143 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 144 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 145 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 146 147 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 148 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 149 150 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 151 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 152 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 153 154 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 155 156 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 157 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 158 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 159 160 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 161 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 162 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 163 164 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 165 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 166 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 167 168 /* Used in kernel only */ 169 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 170 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 171 172 /* 173 * Multicast Listener Discovery 174 */ 175 struct mld_hdr { 176 struct icmp6_hdr mld_icmp6_hdr; 177 struct in6_addr mld_addr; /* multicast address */ 178 } __packed; 179 180 /* definitions to provide backward compatibility to old KAME applications */ 181 #ifndef _KERNEL 182 #define mld6_hdr mld_hdr 183 #define mld6_type mld_type 184 #define mld6_code mld_code 185 #define mld6_cksum mld_cksum 186 #define mld6_maxdelay mld_maxdelay 187 #define mld6_reserved mld_reserved 188 #define mld6_addr mld_addr 189 #endif 190 191 /* shortcut macro definitions */ 192 #define mld_type mld_icmp6_hdr.icmp6_type 193 #define mld_code mld_icmp6_hdr.icmp6_code 194 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 195 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 196 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 197 198 /* 199 * Neighbor Discovery 200 */ 201 202 struct nd_router_solicit { /* router solicitation */ 203 struct icmp6_hdr nd_rs_hdr; 204 /* could be followed by options */ 205 } __packed; 206 207 #define nd_rs_type nd_rs_hdr.icmp6_type 208 #define nd_rs_code nd_rs_hdr.icmp6_code 209 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 210 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 211 212 struct nd_router_advert { /* router advertisement */ 213 struct icmp6_hdr nd_ra_hdr; 214 u_int32_t nd_ra_reachable; /* reachable time */ 215 u_int32_t nd_ra_retransmit; /* retransmit timer */ 216 /* could be followed by options */ 217 } __packed; 218 219 #define nd_ra_type nd_ra_hdr.icmp6_type 220 #define nd_ra_code nd_ra_hdr.icmp6_code 221 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 222 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 223 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 224 #define ND_RA_FLAG_MANAGED 0x80 225 #define ND_RA_FLAG_OTHER 0x40 226 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 227 228 struct nd_neighbor_solicit { /* neighbor solicitation */ 229 struct icmp6_hdr nd_ns_hdr; 230 struct in6_addr nd_ns_target; /*target address */ 231 /* could be followed by options */ 232 } __packed; 233 234 #define nd_ns_type nd_ns_hdr.icmp6_type 235 #define nd_ns_code nd_ns_hdr.icmp6_code 236 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 237 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 238 239 struct nd_neighbor_advert { /* neighbor advertisement */ 240 struct icmp6_hdr nd_na_hdr; 241 struct in6_addr nd_na_target; /* target address */ 242 /* could be followed by options */ 243 } __packed; 244 245 #define nd_na_type nd_na_hdr.icmp6_type 246 #define nd_na_code nd_na_hdr.icmp6_code 247 #define nd_na_cksum nd_na_hdr.icmp6_cksum 248 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 249 #if _BYTE_ORDER == _BIG_ENDIAN 250 #define ND_NA_FLAG_ROUTER 0x80000000 251 #define ND_NA_FLAG_SOLICITED 0x40000000 252 #define ND_NA_FLAG_OVERRIDE 0x20000000 253 #else 254 #if _BYTE_ORDER == _LITTLE_ENDIAN 255 #define ND_NA_FLAG_ROUTER 0x80 256 #define ND_NA_FLAG_SOLICITED 0x40 257 #define ND_NA_FLAG_OVERRIDE 0x20 258 #endif 259 #endif 260 261 struct nd_redirect { /* redirect */ 262 struct icmp6_hdr nd_rd_hdr; 263 struct in6_addr nd_rd_target; /* target address */ 264 struct in6_addr nd_rd_dst; /* destination address */ 265 /* could be followed by options */ 266 } __packed; 267 268 #define nd_rd_type nd_rd_hdr.icmp6_type 269 #define nd_rd_code nd_rd_hdr.icmp6_code 270 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 271 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 272 273 struct nd_opt_hdr { /* Neighbor discovery option header */ 274 u_int8_t nd_opt_type; 275 u_int8_t nd_opt_len; 276 /* followed by option specific data*/ 277 } __packed; 278 279 #define ND_OPT_SOURCE_LINKADDR 1 280 #define ND_OPT_TARGET_LINKADDR 2 281 #define ND_OPT_PREFIX_INFORMATION 3 282 #define ND_OPT_REDIRECTED_HEADER 4 283 #define ND_OPT_MTU 5 284 285 struct nd_opt_prefix_info { /* prefix information */ 286 u_int8_t nd_opt_pi_type; 287 u_int8_t nd_opt_pi_len; 288 u_int8_t nd_opt_pi_prefix_len; 289 u_int8_t nd_opt_pi_flags_reserved; 290 u_int32_t nd_opt_pi_valid_time; 291 u_int32_t nd_opt_pi_preferred_time; 292 u_int32_t nd_opt_pi_reserved2; 293 struct in6_addr nd_opt_pi_prefix; 294 } __packed; 295 296 #define ND_OPT_PI_FLAG_ONLINK 0x80 297 #define ND_OPT_PI_FLAG_AUTO 0x40 298 299 struct nd_opt_rd_hdr { /* redirected header */ 300 u_int8_t nd_opt_rh_type; 301 u_int8_t nd_opt_rh_len; 302 u_int16_t nd_opt_rh_reserved1; 303 u_int32_t nd_opt_rh_reserved2; 304 /* followed by IP header and data */ 305 } __packed; 306 307 struct nd_opt_mtu { /* MTU option */ 308 u_int8_t nd_opt_mtu_type; 309 u_int8_t nd_opt_mtu_len; 310 u_int16_t nd_opt_mtu_reserved; 311 u_int32_t nd_opt_mtu_mtu; 312 } __packed; 313 314 /* 315 * icmp6 namelookup 316 */ 317 318 struct icmp6_namelookup { 319 struct icmp6_hdr icmp6_nl_hdr; 320 u_int8_t icmp6_nl_nonce[8]; 321 int32_t icmp6_nl_ttl; 322 #if 0 323 u_int8_t icmp6_nl_len; 324 u_int8_t icmp6_nl_name[3]; 325 #endif 326 /* could be followed by options */ 327 } __packed; 328 329 /* 330 * icmp6 node information 331 */ 332 struct icmp6_nodeinfo { 333 struct icmp6_hdr icmp6_ni_hdr; 334 u_int8_t icmp6_ni_nonce[8]; 335 /* could be followed by reply data */ 336 } __packed; 337 338 #define ni_type icmp6_ni_hdr.icmp6_type 339 #define ni_code icmp6_ni_hdr.icmp6_code 340 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 341 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 342 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 343 344 #define NI_QTYPE_NOOP 0 /* NOOP */ 345 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 346 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 347 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 348 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 349 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 350 351 #if _BYTE_ORDER == _BIG_ENDIAN 352 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 353 #define NI_FQDN_FLAG_VALIDTTL 0x1 354 #elif _BYTE_ORDER == _LITTLE_ENDIAN 355 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 356 #define NI_FQDN_FLAG_VALIDTTL 0x0100 357 #endif 358 359 #ifdef NAME_LOOKUPS_04 360 #if _BYTE_ORDER == _BIG_ENDIAN 361 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 362 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 363 #define NI_NODEADDR_FLAG_GLOBAL 0x4 364 #define NI_NODEADDR_FLAG_ALL 0x8 365 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 366 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 367 #elif _BYTE_ORDER == _LITTLE_ENDIAN 368 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 369 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 370 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 371 #define NI_NODEADDR_FLAG_ALL 0x0800 372 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 373 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 374 #endif 375 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 376 #if _BYTE_ORDER == _BIG_ENDIAN 377 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 378 #define NI_NODEADDR_FLAG_ALL 0x2 379 #define NI_NODEADDR_FLAG_COMPAT 0x4 380 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 381 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 382 #define NI_NODEADDR_FLAG_GLOBAL 0x20 383 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 384 #elif _BYTE_ORDER == _LITTLE_ENDIAN 385 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 386 #define NI_NODEADDR_FLAG_ALL 0x0200 387 #define NI_NODEADDR_FLAG_COMPAT 0x0400 388 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 389 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 390 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 391 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 392 #endif 393 #endif 394 395 struct ni_reply_fqdn { 396 u_int32_t ni_fqdn_ttl; /* TTL */ 397 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 398 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 399 } __packed; 400 401 /* 402 * Router Renumbering. as router-renum-08.txt 403 */ 404 struct icmp6_router_renum { /* router renumbering header */ 405 struct icmp6_hdr rr_hdr; 406 u_int8_t rr_segnum; 407 u_int8_t rr_flags; 408 u_int16_t rr_maxdelay; 409 u_int32_t rr_reserved; 410 } __packed; 411 412 #define ICMP6_RR_FLAGS_TEST 0x80 413 #define ICMP6_RR_FLAGS_REQRESULT 0x40 414 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 415 #define ICMP6_RR_FLAGS_SPECSITE 0x10 416 #define ICMP6_RR_FLAGS_PREVDONE 0x08 417 418 #define rr_type rr_hdr.icmp6_type 419 #define rr_code rr_hdr.icmp6_code 420 #define rr_cksum rr_hdr.icmp6_cksum 421 #define rr_seqnum rr_hdr.icmp6_data32[0] 422 423 struct rr_pco_match { /* match prefix part */ 424 u_int8_t rpm_code; 425 u_int8_t rpm_len; 426 u_int8_t rpm_ordinal; 427 u_int8_t rpm_matchlen; 428 u_int8_t rpm_minlen; 429 u_int8_t rpm_maxlen; 430 u_int16_t rpm_reserved; 431 struct in6_addr rpm_prefix; 432 } __packed; 433 434 #define RPM_PCO_ADD 1 435 #define RPM_PCO_CHANGE 2 436 #define RPM_PCO_SETGLOBAL 3 437 #define RPM_PCO_MAX 4 438 439 struct rr_pco_use { /* use prefix part */ 440 u_int8_t rpu_uselen; 441 u_int8_t rpu_keeplen; 442 u_int8_t rpu_ramask; 443 u_int8_t rpu_raflags; 444 u_int32_t rpu_vltime; 445 u_int32_t rpu_pltime; 446 u_int32_t rpu_flags; 447 struct in6_addr rpu_prefix; 448 } __packed; 449 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 450 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 451 452 #if _BYTE_ORDER == _BIG_ENDIAN 453 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 454 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 455 #elif _BYTE_ORDER == _LITTLE_ENDIAN 456 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 457 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 458 #endif 459 460 struct rr_result { /* router renumbering result message */ 461 u_int16_t rrr_flags; 462 u_int8_t rrr_ordinal; 463 u_int8_t rrr_matchedlen; 464 u_int32_t rrr_ifid; 465 struct in6_addr rrr_prefix; 466 } __packed; 467 #if _BYTE_ORDER == _BIG_ENDIAN 468 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 469 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 470 #elif _BYTE_ORDER == _LITTLE_ENDIAN 471 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 472 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 473 #endif 474 475 /* 476 * icmp6 filter structures. 477 */ 478 479 struct icmp6_filter { 480 u_int32_t icmp6_filt[8]; 481 }; 482 483 #ifdef _KERNEL 484 #define ICMP6_FILTER_SETPASSALL(filterp) \ 485 do { \ 486 int i; u_char *p; \ 487 p = (u_char *)filterp; \ 488 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 489 p[i] = 0xff; \ 490 } while (0) 491 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 492 bzero(filterp, sizeof(struct icmp6_filter)) 493 #else /* _KERNEL */ 494 #define ICMP6_FILTER_SETPASSALL(filterp) \ 495 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 496 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 497 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 498 #endif /* _KERNEL */ 499 500 #define ICMP6_FILTER_SETPASS(type, filterp) \ 501 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 502 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 503 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 504 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 505 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 506 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 507 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 508 509 /* 510 * Variables related to this implementation 511 * of the internet control message protocol version 6. 512 */ 513 struct icmp6errstat { 514 u_int64_t icp6errs_dst_unreach_noroute; 515 u_int64_t icp6errs_dst_unreach_admin; 516 u_int64_t icp6errs_dst_unreach_beyondscope; 517 u_int64_t icp6errs_dst_unreach_addr; 518 u_int64_t icp6errs_dst_unreach_noport; 519 u_int64_t icp6errs_packet_too_big; 520 u_int64_t icp6errs_time_exceed_transit; 521 u_int64_t icp6errs_time_exceed_reassembly; 522 u_int64_t icp6errs_paramprob_header; 523 u_int64_t icp6errs_paramprob_nextheader; 524 u_int64_t icp6errs_paramprob_option; 525 u_int64_t icp6errs_redirect; /* we regard redirect as an error here */ 526 u_int64_t icp6errs_unknown; 527 }; 528 529 struct icmp6stat { 530 /* statistics related to icmp6 packets generated */ 531 u_int64_t icp6s_error; /* # of calls to icmp6_error */ 532 u_int64_t icp6s_canterror; /* no error because old was icmp */ 533 u_int64_t icp6s_toofreq; /* no error because rate limitation */ 534 u_int64_t icp6s_outhist[256]; 535 /* statistics related to input message processed */ 536 u_int64_t icp6s_badcode; /* icmp6_code out of range */ 537 u_int64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 538 u_int64_t icp6s_checksum; /* bad checksum */ 539 u_int64_t icp6s_badlen; /* calculated bound mismatch */ 540 /* 541 * number of responses: this member is inherited from netinet code, but 542 * for netinet6 code, it is already available in icp6s_outhist[]. 543 */ 544 u_int64_t icp6s_reflect; 545 u_int64_t icp6s_inhist[256]; 546 u_int64_t icp6s_nd_toomanyopt; /* too many ND options */ 547 struct icmp6errstat icp6s_outerrhist; 548 #define icp6s_odst_unreach_noroute \ 549 icp6s_outerrhist.icp6errs_dst_unreach_noroute 550 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 551 #define icp6s_odst_unreach_beyondscope \ 552 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 553 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 554 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 555 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 556 #define icp6s_otime_exceed_transit \ 557 icp6s_outerrhist.icp6errs_time_exceed_transit 558 #define icp6s_otime_exceed_reassembly \ 559 icp6s_outerrhist.icp6errs_time_exceed_reassembly 560 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 561 #define icp6s_oparamprob_nextheader \ 562 icp6s_outerrhist.icp6errs_paramprob_nextheader 563 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 564 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 565 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 566 u_int64_t icp6s_pmtuchg; /* path MTU changes */ 567 u_int64_t icp6s_nd_badopt; /* bad ND options */ 568 u_int64_t icp6s_badns; /* bad neighbor solicitation */ 569 u_int64_t icp6s_badna; /* bad neighbor advertisement */ 570 u_int64_t icp6s_badrs; /* bad router advertisement */ 571 u_int64_t icp6s_badra; /* bad router advertisement */ 572 u_int64_t icp6s_badredirect; /* bad redirect message */ 573 }; 574 575 /* 576 * Names for ICMP sysctl objects 577 */ 578 #define ICMPV6CTL_STATS 1 579 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 580 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 581 #if 0 /*obsoleted*/ 582 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 583 #endif 584 #define ICMPV6CTL_ND6_PRUNE 6 585 #define ICMPV6CTL_ND6_DELAY 8 586 #define ICMPV6CTL_ND6_UMAXTRIES 9 587 #define ICMPV6CTL_ND6_MMAXTRIES 10 588 #define ICMPV6CTL_ND6_USELOOPBACK 11 589 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 590 #define ICMPV6CTL_NODEINFO 13 591 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 592 #define ICMPV6CTL_ND6_MAXNUDHINT 15 593 #define ICMPV6CTL_MTUDISC_HIWAT 16 594 #define ICMPV6CTL_MTUDISC_LOWAT 17 595 #define ICMPV6CTL_ND6_DEBUG 18 596 #define ICMPV6CTL_ND6_DRLIST 19 597 #define ICMPV6CTL_ND6_PRLIST 20 598 #define ICMPV6CTL_MAXID 21 599 600 #define ICMPV6CTL_NAMES { \ 601 { 0, 0 }, \ 602 { 0, 0 }, \ 603 { "rediraccept", CTLTYPE_INT }, \ 604 { "redirtimeout", CTLTYPE_INT }, \ 605 { 0, 0 }, \ 606 { 0, 0 }, \ 607 { "nd6_prune", CTLTYPE_INT }, \ 608 { 0, 0 }, \ 609 { "nd6_delay", CTLTYPE_INT }, \ 610 { "nd6_umaxtries", CTLTYPE_INT }, \ 611 { "nd6_mmaxtries", CTLTYPE_INT }, \ 612 { "nd6_useloopback", CTLTYPE_INT }, \ 613 { 0, 0 }, \ 614 { "nodeinfo", CTLTYPE_INT }, \ 615 { "errppslimit", CTLTYPE_INT }, \ 616 { "nd6_maxnudhint", CTLTYPE_INT }, \ 617 { "mtudisc_hiwat", CTLTYPE_INT }, \ 618 { "mtudisc_lowat", CTLTYPE_INT }, \ 619 { "nd6_debug", CTLTYPE_INT }, \ 620 { 0, 0 }, \ 621 { 0, 0 }, \ 622 } 623 624 #define ICMPV6CTL_VARS { \ 625 NULL, \ 626 NULL, \ 627 &icmp6_rediraccept, \ 628 &icmp6_redirtimeout, \ 629 NULL, \ 630 NULL, \ 631 &nd6_prune, \ 632 NULL, \ 633 &nd6_delay, \ 634 &nd6_umaxtries, \ 635 &nd6_mmaxtries, \ 636 &nd6_useloopback, \ 637 NULL, \ 638 &icmp6_nodeinfo, \ 639 &icmp6errppslim, \ 640 &nd6_maxnudhint, \ 641 &icmp6_mtudisc_hiwat, \ 642 &icmp6_mtudisc_lowat, \ 643 &nd6_debug, \ 644 NULL, \ 645 NULL, \ 646 } 647 648 #define RTF_PROBEMTU RTF_PROTO1 649 650 #ifdef _KERNEL 651 # ifdef __STDC__ 652 struct rtentry; 653 struct rttimer; 654 struct in6_multi; 655 # endif 656 void icmp6_init(void); 657 void icmp6_paramerror(struct mbuf *, int); 658 void icmp6_error(struct mbuf *, int, int, int); 659 int icmp6_input(struct mbuf **, int *, int); 660 void icmp6_fasttimo(void); 661 void icmp6_reflect(struct mbuf *, size_t); 662 void icmp6_prepare(struct mbuf *); 663 void icmp6_redirect_input(struct mbuf *, int); 664 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 665 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 666 667 struct ip6ctlparam; 668 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 669 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 670 671 /* XXX: is this the right place for these macros? */ 672 #define icmp6_ifstat_inc(ifp, tag) \ 673 do { \ 674 if (ifp) \ 675 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 676 } while (0) 677 678 #define icmp6_ifoutstat_inc(ifp, type, code) \ 679 do { \ 680 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 681 switch(type) { \ 682 case ICMP6_DST_UNREACH: \ 683 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 684 if (code == ICMP6_DST_UNREACH_ADMIN) \ 685 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 686 break; \ 687 case ICMP6_PACKET_TOO_BIG: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 689 break; \ 690 case ICMP6_TIME_EXCEEDED: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 692 break; \ 693 case ICMP6_PARAM_PROB: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 695 break; \ 696 case ICMP6_ECHO_REQUEST: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 698 break; \ 699 case ICMP6_ECHO_REPLY: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 701 break; \ 702 case MLD_LISTENER_QUERY: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 704 break; \ 705 case MLD_LISTENER_REPORT: \ 706 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 707 break; \ 708 case MLD_LISTENER_DONE: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 710 break; \ 711 case ND_ROUTER_SOLICIT: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 713 break; \ 714 case ND_ROUTER_ADVERT: \ 715 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 716 break; \ 717 case ND_NEIGHBOR_SOLICIT: \ 718 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 719 break; \ 720 case ND_NEIGHBOR_ADVERT: \ 721 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 722 break; \ 723 case ND_REDIRECT: \ 724 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 725 break; \ 726 } \ 727 } while (0) 728 729 extern int icmp6_rediraccept; /* accept/process redirects */ 730 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 731 #endif /* _KERNEL */ 732 #endif /* _NETINET_ICMP6_H_ */ 733