1 /* $NetBSD: icmp6.h,v 1.30 2004/04/21 17:49:46 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. 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 } __attribute__((__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 advertisment */ 116 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 117 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 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 } __attribute__((__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 /* 200 * Neighbor Discovery 201 */ 202 203 struct nd_router_solicit { /* router solicitation */ 204 struct icmp6_hdr nd_rs_hdr; 205 /* could be followed by options */ 206 } __attribute__((__packed__)); 207 208 #define nd_rs_type nd_rs_hdr.icmp6_type 209 #define nd_rs_code nd_rs_hdr.icmp6_code 210 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 211 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 212 213 struct nd_router_advert { /* router advertisement */ 214 struct icmp6_hdr nd_ra_hdr; 215 u_int32_t nd_ra_reachable; /* reachable time */ 216 u_int32_t nd_ra_retransmit; /* retransmit timer */ 217 /* could be followed by options */ 218 } __attribute__((__packed__)); 219 220 #define nd_ra_type nd_ra_hdr.icmp6_type 221 #define nd_ra_code nd_ra_hdr.icmp6_code 222 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 223 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 224 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 225 #define ND_RA_FLAG_MANAGED 0x80 226 #define ND_RA_FLAG_OTHER 0x40 227 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 228 229 struct nd_neighbor_solicit { /* neighbor solicitation */ 230 struct icmp6_hdr nd_ns_hdr; 231 struct in6_addr nd_ns_target; /*target address */ 232 /* could be followed by options */ 233 } __attribute__((__packed__)); 234 235 #define nd_ns_type nd_ns_hdr.icmp6_type 236 #define nd_ns_code nd_ns_hdr.icmp6_code 237 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 238 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 239 240 struct nd_neighbor_advert { /* neighbor advertisement */ 241 struct icmp6_hdr nd_na_hdr; 242 struct in6_addr nd_na_target; /* target address */ 243 /* could be followed by options */ 244 } __attribute__((__packed__)); 245 246 #define nd_na_type nd_na_hdr.icmp6_type 247 #define nd_na_code nd_na_hdr.icmp6_code 248 #define nd_na_cksum nd_na_hdr.icmp6_cksum 249 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 250 #if BYTE_ORDER == BIG_ENDIAN 251 #define ND_NA_FLAG_ROUTER 0x80000000 252 #define ND_NA_FLAG_SOLICITED 0x40000000 253 #define ND_NA_FLAG_OVERRIDE 0x20000000 254 #else 255 #if BYTE_ORDER == LITTLE_ENDIAN 256 #define ND_NA_FLAG_ROUTER 0x80 257 #define ND_NA_FLAG_SOLICITED 0x40 258 #define ND_NA_FLAG_OVERRIDE 0x20 259 #endif 260 #endif 261 262 struct nd_redirect { /* redirect */ 263 struct icmp6_hdr nd_rd_hdr; 264 struct in6_addr nd_rd_target; /* target address */ 265 struct in6_addr nd_rd_dst; /* destination address */ 266 /* could be followed by options */ 267 } __attribute__((__packed__)); 268 269 #define nd_rd_type nd_rd_hdr.icmp6_type 270 #define nd_rd_code nd_rd_hdr.icmp6_code 271 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 272 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 273 274 struct nd_opt_hdr { /* Neighbor discovery option header */ 275 u_int8_t nd_opt_type; 276 u_int8_t nd_opt_len; 277 /* followed by option specific data*/ 278 } __attribute__((__packed__)); 279 280 #define ND_OPT_SOURCE_LINKADDR 1 281 #define ND_OPT_TARGET_LINKADDR 2 282 #define ND_OPT_PREFIX_INFORMATION 3 283 #define ND_OPT_REDIRECTED_HEADER 4 284 #define ND_OPT_MTU 5 285 286 struct nd_opt_prefix_info { /* prefix information */ 287 u_int8_t nd_opt_pi_type; 288 u_int8_t nd_opt_pi_len; 289 u_int8_t nd_opt_pi_prefix_len; 290 u_int8_t nd_opt_pi_flags_reserved; 291 u_int32_t nd_opt_pi_valid_time; 292 u_int32_t nd_opt_pi_preferred_time; 293 u_int32_t nd_opt_pi_reserved2; 294 struct in6_addr nd_opt_pi_prefix; 295 } __attribute__((__packed__)); 296 297 #define ND_OPT_PI_FLAG_ONLINK 0x80 298 #define ND_OPT_PI_FLAG_AUTO 0x40 299 300 struct nd_opt_rd_hdr { /* redirected header */ 301 u_int8_t nd_opt_rh_type; 302 u_int8_t nd_opt_rh_len; 303 u_int16_t nd_opt_rh_reserved1; 304 u_int32_t nd_opt_rh_reserved2; 305 /* followed by IP header and data */ 306 } __attribute__((__packed__)); 307 308 struct nd_opt_mtu { /* MTU option */ 309 u_int8_t nd_opt_mtu_type; 310 u_int8_t nd_opt_mtu_len; 311 u_int16_t nd_opt_mtu_reserved; 312 u_int32_t nd_opt_mtu_mtu; 313 } __attribute__((__packed__)); 314 315 /* 316 * icmp6 namelookup 317 */ 318 319 struct icmp6_namelookup { 320 struct icmp6_hdr icmp6_nl_hdr; 321 u_int8_t icmp6_nl_nonce[8]; 322 int32_t icmp6_nl_ttl; 323 #if 0 324 u_int8_t icmp6_nl_len; 325 u_int8_t icmp6_nl_name[3]; 326 #endif 327 /* could be followed by options */ 328 } __attribute__((__packed__)); 329 330 /* 331 * icmp6 node information 332 */ 333 struct icmp6_nodeinfo { 334 struct icmp6_hdr icmp6_ni_hdr; 335 u_int8_t icmp6_ni_nonce[8]; 336 /* could be followed by reply data */ 337 } __attribute__((__packed__)); 338 339 #define ni_type icmp6_ni_hdr.icmp6_type 340 #define ni_code icmp6_ni_hdr.icmp6_code 341 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 342 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 343 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 344 345 #define NI_QTYPE_NOOP 0 /* NOOP */ 346 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 347 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 348 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 349 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 350 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 351 352 #if BYTE_ORDER == BIG_ENDIAN 353 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 354 #define NI_FQDN_FLAG_VALIDTTL 0x1 355 #elif BYTE_ORDER == LITTLE_ENDIAN 356 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 357 #define NI_FQDN_FLAG_VALIDTTL 0x0100 358 #endif 359 360 #ifdef NAME_LOOKUPS_04 361 #if BYTE_ORDER == BIG_ENDIAN 362 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 363 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 364 #define NI_NODEADDR_FLAG_GLOBAL 0x4 365 #define NI_NODEADDR_FLAG_ALL 0x8 366 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 367 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 368 #elif BYTE_ORDER == LITTLE_ENDIAN 369 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 370 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 371 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 372 #define NI_NODEADDR_FLAG_ALL 0x0800 373 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 374 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 375 #endif 376 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 377 #if BYTE_ORDER == BIG_ENDIAN 378 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 379 #define NI_NODEADDR_FLAG_ALL 0x2 380 #define NI_NODEADDR_FLAG_COMPAT 0x4 381 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 382 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 383 #define NI_NODEADDR_FLAG_GLOBAL 0x20 384 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 385 #elif BYTE_ORDER == LITTLE_ENDIAN 386 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 387 #define NI_NODEADDR_FLAG_ALL 0x0200 388 #define NI_NODEADDR_FLAG_COMPAT 0x0400 389 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 390 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 391 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 392 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 393 #endif 394 #endif 395 396 struct ni_reply_fqdn { 397 u_int32_t ni_fqdn_ttl; /* TTL */ 398 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 399 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 400 } __attribute__((__packed__)); 401 402 /* 403 * Router Renumbering. as router-renum-08.txt 404 */ 405 struct icmp6_router_renum { /* router renumbering header */ 406 struct icmp6_hdr rr_hdr; 407 u_int8_t rr_segnum; 408 u_int8_t rr_flags; 409 u_int16_t rr_maxdelay; 410 u_int32_t rr_reserved; 411 } __attribute__((__packed__)); 412 413 #define ICMP6_RR_FLAGS_TEST 0x80 414 #define ICMP6_RR_FLAGS_REQRESULT 0x40 415 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 416 #define ICMP6_RR_FLAGS_SPECSITE 0x10 417 #define ICMP6_RR_FLAGS_PREVDONE 0x08 418 419 #define rr_type rr_hdr.icmp6_type 420 #define rr_code rr_hdr.icmp6_code 421 #define rr_cksum rr_hdr.icmp6_cksum 422 #define rr_seqnum rr_hdr.icmp6_data32[0] 423 424 struct rr_pco_match { /* match prefix part */ 425 u_int8_t rpm_code; 426 u_int8_t rpm_len; 427 u_int8_t rpm_ordinal; 428 u_int8_t rpm_matchlen; 429 u_int8_t rpm_minlen; 430 u_int8_t rpm_maxlen; 431 u_int16_t rpm_reserved; 432 struct in6_addr rpm_prefix; 433 } __attribute__((__packed__)); 434 435 #define RPM_PCO_ADD 1 436 #define RPM_PCO_CHANGE 2 437 #define RPM_PCO_SETGLOBAL 3 438 #define RPM_PCO_MAX 4 439 440 struct rr_pco_use { /* use prefix part */ 441 u_int8_t rpu_uselen; 442 u_int8_t rpu_keeplen; 443 u_int8_t rpu_ramask; 444 u_int8_t rpu_raflags; 445 u_int32_t rpu_vltime; 446 u_int32_t rpu_pltime; 447 u_int32_t rpu_flags; 448 struct in6_addr rpu_prefix; 449 } __attribute__((__packed__)); 450 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 451 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 452 453 #if BYTE_ORDER == BIG_ENDIAN 454 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 455 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 456 #elif BYTE_ORDER == LITTLE_ENDIAN 457 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 458 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 459 #endif 460 461 struct rr_result { /* router renumbering result message */ 462 u_int16_t rrr_flags; 463 u_int8_t rrr_ordinal; 464 u_int8_t rrr_matchedlen; 465 u_int32_t rrr_ifid; 466 struct in6_addr rrr_prefix; 467 } __attribute__((__packed__)); 468 #if BYTE_ORDER == BIG_ENDIAN 469 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 470 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 471 #elif BYTE_ORDER == LITTLE_ENDIAN 472 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 473 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 474 #endif 475 476 /* 477 * icmp6 filter structures. 478 */ 479 480 struct icmp6_filter { 481 u_int32_t icmp6_filt[8]; 482 }; 483 484 #ifdef _KERNEL 485 #define ICMP6_FILTER_SETPASSALL(filterp) \ 486 do { \ 487 int i; u_char *p; \ 488 p = (u_char *)filterp; \ 489 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 490 p[i] = 0xff; \ 491 } while (/*CONSTCOND*/ 0) 492 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 493 bzero(filterp, sizeof(struct icmp6_filter)) 494 #else /* _KERNEL */ 495 #define ICMP6_FILTER_SETPASSALL(filterp) \ 496 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 497 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 498 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 499 #endif /* _KERNEL */ 500 501 #define ICMP6_FILTER_SETPASS(type, filterp) \ 502 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 503 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 504 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 505 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 506 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 507 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 508 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 509 510 /* 511 * Variables related to this implementation 512 * of the internet control message protocol version 6. 513 */ 514 struct icmp6errstat { 515 u_quad_t icp6errs_dst_unreach_noroute; 516 u_quad_t icp6errs_dst_unreach_admin; 517 u_quad_t icp6errs_dst_unreach_beyondscope; 518 u_quad_t icp6errs_dst_unreach_addr; 519 u_quad_t icp6errs_dst_unreach_noport; 520 u_quad_t icp6errs_packet_too_big; 521 u_quad_t icp6errs_time_exceed_transit; 522 u_quad_t icp6errs_time_exceed_reassembly; 523 u_quad_t icp6errs_paramprob_header; 524 u_quad_t icp6errs_paramprob_nextheader; 525 u_quad_t icp6errs_paramprob_option; 526 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 527 u_quad_t icp6errs_unknown; 528 }; 529 530 struct icmp6stat { 531 /* statistics related to icmp6 packets generated */ 532 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 533 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 534 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 535 u_quad_t icp6s_outhist[256]; 536 /* statistics related to input message processed */ 537 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 538 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 539 u_quad_t icp6s_checksum; /* bad checksum */ 540 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 541 /* 542 * number of responses: this member is inherited from netinet code, but 543 * for netinet6 code, it is already available in icp6s_outhist[]. 544 */ 545 u_quad_t icp6s_reflect; 546 u_quad_t icp6s_inhist[256]; 547 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 548 struct icmp6errstat icp6s_outerrhist; 549 #define icp6s_odst_unreach_noroute \ 550 icp6s_outerrhist.icp6errs_dst_unreach_noroute 551 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 552 #define icp6s_odst_unreach_beyondscope \ 553 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 554 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 555 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 556 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 557 #define icp6s_otime_exceed_transit \ 558 icp6s_outerrhist.icp6errs_time_exceed_transit 559 #define icp6s_otime_exceed_reassembly \ 560 icp6s_outerrhist.icp6errs_time_exceed_reassembly 561 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 562 #define icp6s_oparamprob_nextheader \ 563 icp6s_outerrhist.icp6errs_paramprob_nextheader 564 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 565 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 566 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 567 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 568 u_quad_t icp6s_nd_badopt; /* bad ND options */ 569 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 570 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 571 u_quad_t icp6s_badrs; /* bad router advertisement */ 572 u_quad_t icp6s_badra; /* bad router advertisement */ 573 u_quad_t icp6s_badredirect; /* bad redirect message */ 574 }; 575 576 /* 577 * Names for ICMP sysctl objects 578 */ 579 #define ICMPV6CTL_STATS 1 580 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 581 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 582 #if 0 /*obsoleted*/ 583 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 584 #endif 585 #define ICMPV6CTL_ND6_PRUNE 6 586 #define ICMPV6CTL_ND6_DELAY 8 587 #define ICMPV6CTL_ND6_UMAXTRIES 9 588 #define ICMPV6CTL_ND6_MMAXTRIES 10 589 #define ICMPV6CTL_ND6_USELOOPBACK 11 590 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 591 #define ICMPV6CTL_NODEINFO 13 592 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 593 #define ICMPV6CTL_ND6_MAXNUDHINT 15 594 #define ICMPV6CTL_MTUDISC_HIWAT 16 595 #define ICMPV6CTL_MTUDISC_LOWAT 17 596 #define ICMPV6CTL_ND6_DEBUG 18 597 #define ICMPV6CTL_ND6_DRLIST 19 598 #define ICMPV6CTL_ND6_PRLIST 20 599 #define ICMPV6CTL_MAXID 21 600 601 #define ICMPV6CTL_NAMES { \ 602 { 0, 0 }, \ 603 { 0, 0 }, \ 604 { "rediraccept", CTLTYPE_INT }, \ 605 { "redirtimeout", CTLTYPE_INT }, \ 606 { 0, 0 }, \ 607 { 0, 0 }, \ 608 { "nd6_prune", CTLTYPE_INT }, \ 609 { 0, 0 }, \ 610 { "nd6_delay", CTLTYPE_INT }, \ 611 { "nd6_umaxtries", CTLTYPE_INT }, \ 612 { "nd6_mmaxtries", CTLTYPE_INT }, \ 613 { "nd6_useloopback", CTLTYPE_INT }, \ 614 { 0, 0 }, \ 615 { "nodeinfo", CTLTYPE_INT }, \ 616 { "errppslimit", CTLTYPE_INT }, \ 617 { "nd6_maxnudhint", CTLTYPE_INT }, \ 618 { "mtudisc_hiwat", CTLTYPE_INT }, \ 619 { "mtudisc_lowat", CTLTYPE_INT }, \ 620 { "nd6_debug", CTLTYPE_INT }, \ 621 { 0, 0 }, \ 622 { 0, 0 }, \ 623 } 624 625 #define RTF_PROBEMTU RTF_PROTO1 626 627 #ifdef _KERNEL 628 struct rtentry; 629 struct rttimer; 630 struct in6_multi; 631 632 void icmp6_init(void); 633 void icmp6_paramerror(struct mbuf *, int); 634 void icmp6_error(struct mbuf *, int, int, int); 635 int icmp6_input(struct mbuf **, int *, int); 636 void icmp6_fasttimo(void); 637 void icmp6_reflect(struct mbuf *, size_t); 638 void icmp6_prepare(struct mbuf *); 639 void icmp6_redirect_input(struct mbuf *, int); 640 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 641 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 642 643 struct ip6ctlparam; 644 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 645 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 646 647 /* XXX: is this the right place for these macros? */ 648 #define icmp6_ifstat_inc(ifp, tag) \ 649 do { \ 650 if (ifp) \ 651 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 652 } while (/*CONSTCOND*/ 0) 653 654 #define icmp6_ifoutstat_inc(ifp, type, code) \ 655 do { \ 656 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 657 switch(type) { \ 658 case ICMP6_DST_UNREACH: \ 659 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 660 if (code == ICMP6_DST_UNREACH_ADMIN) \ 661 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 662 break; \ 663 case ICMP6_PACKET_TOO_BIG: \ 664 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 665 break; \ 666 case ICMP6_TIME_EXCEEDED: \ 667 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 668 break; \ 669 case ICMP6_PARAM_PROB: \ 670 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 671 break; \ 672 case ICMP6_ECHO_REQUEST: \ 673 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 674 break; \ 675 case ICMP6_ECHO_REPLY: \ 676 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 677 break; \ 678 case MLD_LISTENER_QUERY: \ 679 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 680 break; \ 681 case MLD_LISTENER_REPORT: \ 682 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 683 break; \ 684 case MLD_LISTENER_DONE: \ 685 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 686 break; \ 687 case ND_ROUTER_SOLICIT: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 689 break; \ 690 case ND_ROUTER_ADVERT: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 692 break; \ 693 case ND_NEIGHBOR_SOLICIT: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 695 break; \ 696 case ND_NEIGHBOR_ADVERT: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 698 break; \ 699 case ND_REDIRECT: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 701 break; \ 702 } \ 703 } while (/*CONSTCOND*/ 0) 704 705 extern int icmp6_rediraccept; /* accept/process redirects */ 706 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 707 #endif /* _KERNEL */ 708 709 #endif /* not _NETINET_ICMP6_H_ */ 710