1 /* $NetBSD: icmp6.h,v 1.21 2001/12/21 02:52:18 itojun Exp $ */ 2 /* $KAME: icmp6.h,v 1.39 2001/02/06 03:48:06 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. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifndef _NETINET_ICMP6_H_ 69 #define _NETINET_ICMP6_H_ 70 71 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 72 - sizeof(struct icmp6_hdr) */ 73 74 struct icmp6_hdr { 75 u_int8_t icmp6_type; /* type field */ 76 u_int8_t icmp6_code; /* code field */ 77 u_int16_t icmp6_cksum; /* checksum field */ 78 union { 79 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 80 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 81 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 82 } icmp6_dataun; 83 } __attribute__((__packed__)); 84 85 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 86 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 87 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 88 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 89 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 90 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 91 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 92 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 93 94 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 95 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 96 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 97 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 98 99 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 100 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 101 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 102 #define MLD6_LISTENER_QUERY 130 /* multicast listener query */ 103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 104 #define MLD6_LISTENER_REPORT 131 /* multicast listener report */ 105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 106 #define MLD6_LISTENER_DONE 132 /* multicast listener done */ 107 108 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 109 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 110 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 111 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 112 #define ND_REDIRECT 137 /* redirect */ 113 114 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 115 116 #define ICMP6_WRUREQUEST 139 /* who are you request */ 117 #define ICMP6_WRUREPLY 140 /* who are you reply */ 118 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 119 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 120 #define ICMP6_NI_QUERY 139 /* node information request */ 121 #define ICMP6_NI_REPLY 140 /* node information reply */ 122 123 /* The definitions below are experimental. TBA */ 124 #define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */ 125 #define MLD6_MTRACE 201 /* mtrace messages */ 126 127 #define ICMP6_MAXTYPE 201 128 129 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 130 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 131 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 132 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 133 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 134 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 135 136 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 137 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 138 139 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 140 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 141 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 142 143 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 144 145 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 146 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 147 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 148 149 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 150 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 151 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 152 153 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 154 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 155 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 156 157 /* Used in kernel only */ 158 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 159 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 160 161 /* 162 * Multicast Listener Discovery 163 */ 164 struct mld6_hdr { 165 struct icmp6_hdr mld6_hdr; 166 struct in6_addr mld6_addr; /* multicast address */ 167 } __attribute__((__packed__)); 168 169 #define mld6_type mld6_hdr.icmp6_type 170 #define mld6_code mld6_hdr.icmp6_code 171 #define mld6_cksum mld6_hdr.icmp6_cksum 172 #define mld6_maxdelay mld6_hdr.icmp6_data16[0] 173 #define mld6_reserved mld6_hdr.icmp6_data16[1] 174 175 /* 176 * Neighbor Discovery 177 */ 178 179 struct nd_router_solicit { /* router solicitation */ 180 struct icmp6_hdr nd_rs_hdr; 181 /* could be followed by options */ 182 } __attribute__((__packed__)); 183 184 #define nd_rs_type nd_rs_hdr.icmp6_type 185 #define nd_rs_code nd_rs_hdr.icmp6_code 186 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 187 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 188 189 struct nd_router_advert { /* router advertisement */ 190 struct icmp6_hdr nd_ra_hdr; 191 u_int32_t nd_ra_reachable; /* reachable time */ 192 u_int32_t nd_ra_retransmit; /* retransmit timer */ 193 /* could be followed by options */ 194 } __attribute__((__packed__)); 195 196 #define nd_ra_type nd_ra_hdr.icmp6_type 197 #define nd_ra_code nd_ra_hdr.icmp6_code 198 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 199 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 200 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 201 #define ND_RA_FLAG_MANAGED 0x80 202 #define ND_RA_FLAG_OTHER 0x40 203 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 204 205 struct nd_neighbor_solicit { /* neighbor solicitation */ 206 struct icmp6_hdr nd_ns_hdr; 207 struct in6_addr nd_ns_target; /*target address */ 208 /* could be followed by options */ 209 } __attribute__((__packed__)); 210 211 #define nd_ns_type nd_ns_hdr.icmp6_type 212 #define nd_ns_code nd_ns_hdr.icmp6_code 213 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 214 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 215 216 struct nd_neighbor_advert { /* neighbor advertisement */ 217 struct icmp6_hdr nd_na_hdr; 218 struct in6_addr nd_na_target; /* target address */ 219 /* could be followed by options */ 220 } __attribute__((__packed__)); 221 222 #define nd_na_type nd_na_hdr.icmp6_type 223 #define nd_na_code nd_na_hdr.icmp6_code 224 #define nd_na_cksum nd_na_hdr.icmp6_cksum 225 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 226 #if BYTE_ORDER == BIG_ENDIAN 227 #define ND_NA_FLAG_ROUTER 0x80000000 228 #define ND_NA_FLAG_SOLICITED 0x40000000 229 #define ND_NA_FLAG_OVERRIDE 0x20000000 230 #else 231 #if BYTE_ORDER == LITTLE_ENDIAN 232 #define ND_NA_FLAG_ROUTER 0x80 233 #define ND_NA_FLAG_SOLICITED 0x40 234 #define ND_NA_FLAG_OVERRIDE 0x20 235 #endif 236 #endif 237 238 struct nd_redirect { /* redirect */ 239 struct icmp6_hdr nd_rd_hdr; 240 struct in6_addr nd_rd_target; /* target address */ 241 struct in6_addr nd_rd_dst; /* destination address */ 242 /* could be followed by options */ 243 } __attribute__((__packed__)); 244 245 #define nd_rd_type nd_rd_hdr.icmp6_type 246 #define nd_rd_code nd_rd_hdr.icmp6_code 247 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 248 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 249 250 struct nd_opt_hdr { /* Neighbor discovery option header */ 251 u_int8_t nd_opt_type; 252 u_int8_t nd_opt_len; 253 /* followed by option specific data*/ 254 } __attribute__((__packed__)); 255 256 #define ND_OPT_SOURCE_LINKADDR 1 257 #define ND_OPT_TARGET_LINKADDR 2 258 #define ND_OPT_PREFIX_INFORMATION 3 259 #define ND_OPT_REDIRECTED_HEADER 4 260 #define ND_OPT_MTU 5 261 262 struct nd_opt_prefix_info { /* prefix information */ 263 u_int8_t nd_opt_pi_type; 264 u_int8_t nd_opt_pi_len; 265 u_int8_t nd_opt_pi_prefix_len; 266 u_int8_t nd_opt_pi_flags_reserved; 267 u_int32_t nd_opt_pi_valid_time; 268 u_int32_t nd_opt_pi_preferred_time; 269 u_int32_t nd_opt_pi_reserved2; 270 struct in6_addr nd_opt_pi_prefix; 271 } __attribute__((__packed__)); 272 273 #define ND_OPT_PI_FLAG_ONLINK 0x80 274 #define ND_OPT_PI_FLAG_AUTO 0x40 275 276 struct nd_opt_rd_hdr { /* redirected header */ 277 u_int8_t nd_opt_rh_type; 278 u_int8_t nd_opt_rh_len; 279 u_int16_t nd_opt_rh_reserved1; 280 u_int32_t nd_opt_rh_reserved2; 281 /* followed by IP header and data */ 282 } __attribute__((__packed__)); 283 284 struct nd_opt_mtu { /* MTU option */ 285 u_int8_t nd_opt_mtu_type; 286 u_int8_t nd_opt_mtu_len; 287 u_int16_t nd_opt_mtu_reserved; 288 u_int32_t nd_opt_mtu_mtu; 289 } __attribute__((__packed__)); 290 291 /* 292 * icmp6 namelookup 293 */ 294 295 struct icmp6_namelookup { 296 struct icmp6_hdr icmp6_nl_hdr; 297 u_int8_t icmp6_nl_nonce[8]; 298 int32_t icmp6_nl_ttl; 299 #if 0 300 u_int8_t icmp6_nl_len; 301 u_int8_t icmp6_nl_name[3]; 302 #endif 303 /* could be followed by options */ 304 } __attribute__((__packed__)); 305 306 /* 307 * icmp6 node information 308 */ 309 struct icmp6_nodeinfo { 310 struct icmp6_hdr icmp6_ni_hdr; 311 u_int8_t icmp6_ni_nonce[8]; 312 /* could be followed by reply data */ 313 } __attribute__((__packed__)); 314 315 #define ni_type icmp6_ni_hdr.icmp6_type 316 #define ni_code icmp6_ni_hdr.icmp6_code 317 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 318 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 319 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 320 321 #define NI_QTYPE_NOOP 0 /* NOOP */ 322 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 323 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 324 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 325 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 326 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 327 328 #if BYTE_ORDER == BIG_ENDIAN 329 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 330 #define NI_FQDN_FLAG_VALIDTTL 0x1 331 #elif BYTE_ORDER == LITTLE_ENDIAN 332 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 333 #define NI_FQDN_FLAG_VALIDTTL 0x0100 334 #endif 335 336 #ifdef NAME_LOOKUPS_04 337 #if BYTE_ORDER == BIG_ENDIAN 338 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 339 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 340 #define NI_NODEADDR_FLAG_GLOBAL 0x4 341 #define NI_NODEADDR_FLAG_ALL 0x8 342 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 343 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 344 #elif BYTE_ORDER == LITTLE_ENDIAN 345 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 346 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 347 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 348 #define NI_NODEADDR_FLAG_ALL 0x0800 349 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 350 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 351 #endif 352 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 353 #if BYTE_ORDER == BIG_ENDIAN 354 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 355 #define NI_NODEADDR_FLAG_ALL 0x2 356 #define NI_NODEADDR_FLAG_COMPAT 0x4 357 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 358 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 359 #define NI_NODEADDR_FLAG_GLOBAL 0x20 360 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 361 #elif BYTE_ORDER == LITTLE_ENDIAN 362 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 363 #define NI_NODEADDR_FLAG_ALL 0x0200 364 #define NI_NODEADDR_FLAG_COMPAT 0x0400 365 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 366 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 367 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 368 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 369 #endif 370 #endif 371 372 struct ni_reply_fqdn { 373 u_int32_t ni_fqdn_ttl; /* TTL */ 374 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 375 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 376 } __attribute__((__packed__)); 377 378 /* 379 * Router Renumbering. as router-renum-08.txt 380 */ 381 struct icmp6_router_renum { /* router renumbering header */ 382 struct icmp6_hdr rr_hdr; 383 u_int8_t rr_segnum; 384 u_int8_t rr_flags; 385 u_int16_t rr_maxdelay; 386 u_int32_t rr_reserved; 387 } __attribute__((__packed__)); 388 389 #define ICMP6_RR_FLAGS_TEST 0x80 390 #define ICMP6_RR_FLAGS_REQRESULT 0x40 391 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 392 #define ICMP6_RR_FLAGS_SPECSITE 0x10 393 #define ICMP6_RR_FLAGS_PREVDONE 0x08 394 395 #define rr_type rr_hdr.icmp6_type 396 #define rr_code rr_hdr.icmp6_code 397 #define rr_cksum rr_hdr.icmp6_cksum 398 #define rr_seqnum rr_hdr.icmp6_data32[0] 399 400 struct rr_pco_match { /* match prefix part */ 401 u_int8_t rpm_code; 402 u_int8_t rpm_len; 403 u_int8_t rpm_ordinal; 404 u_int8_t rpm_matchlen; 405 u_int8_t rpm_minlen; 406 u_int8_t rpm_maxlen; 407 u_int16_t rpm_reserved; 408 struct in6_addr rpm_prefix; 409 } __attribute__((__packed__)); 410 411 #define RPM_PCO_ADD 1 412 #define RPM_PCO_CHANGE 2 413 #define RPM_PCO_SETGLOBAL 3 414 #define RPM_PCO_MAX 4 415 416 struct rr_pco_use { /* use prefix part */ 417 u_int8_t rpu_uselen; 418 u_int8_t rpu_keeplen; 419 u_int8_t rpu_ramask; 420 u_int8_t rpu_raflags; 421 u_int32_t rpu_vltime; 422 u_int32_t rpu_pltime; 423 u_int32_t rpu_flags; 424 struct in6_addr rpu_prefix; 425 } __attribute__((__packed__)); 426 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 427 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 428 429 #if BYTE_ORDER == BIG_ENDIAN 430 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 431 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 432 #elif BYTE_ORDER == LITTLE_ENDIAN 433 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 434 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 435 #endif 436 437 struct rr_result { /* router renumbering result message */ 438 u_int16_t rrr_flags; 439 u_int8_t rrr_ordinal; 440 u_int8_t rrr_matchedlen; 441 u_int32_t rrr_ifid; 442 struct in6_addr rrr_prefix; 443 } __attribute__((__packed__)); 444 #if BYTE_ORDER == BIG_ENDIAN 445 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 446 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 447 #elif BYTE_ORDER == LITTLE_ENDIAN 448 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 449 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 450 #endif 451 452 /* 453 * icmp6 filter structures. 454 */ 455 456 struct icmp6_filter { 457 u_int32_t icmp6_filt[8]; 458 }; 459 460 #ifdef _KERNEL 461 #define ICMP6_FILTER_SETPASSALL(filterp) \ 462 do { \ 463 int i; u_char *p; \ 464 p = (u_char *)filterp; \ 465 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 466 p[i] = 0xff; \ 467 } while (0) 468 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 469 bzero(filterp, sizeof(struct icmp6_filter)) 470 #else /* _KERNEL */ 471 #define ICMP6_FILTER_SETPASSALL(filterp) \ 472 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 473 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 474 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 475 #endif /* _KERNEL */ 476 477 #define ICMP6_FILTER_SETPASS(type, filterp) \ 478 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 479 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 480 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 481 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 482 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 483 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 484 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 485 486 /* 487 * Variables related to this implementation 488 * of the internet control message protocol version 6. 489 */ 490 struct icmp6errstat { 491 u_quad_t icp6errs_dst_unreach_noroute; 492 u_quad_t icp6errs_dst_unreach_admin; 493 u_quad_t icp6errs_dst_unreach_beyondscope; 494 u_quad_t icp6errs_dst_unreach_addr; 495 u_quad_t icp6errs_dst_unreach_noport; 496 u_quad_t icp6errs_packet_too_big; 497 u_quad_t icp6errs_time_exceed_transit; 498 u_quad_t icp6errs_time_exceed_reassembly; 499 u_quad_t icp6errs_paramprob_header; 500 u_quad_t icp6errs_paramprob_nextheader; 501 u_quad_t icp6errs_paramprob_option; 502 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 503 u_quad_t icp6errs_unknown; 504 }; 505 506 struct icmp6stat { 507 /* statistics related to icmp6 packets generated */ 508 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 509 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 510 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 511 u_quad_t icp6s_outhist[256]; 512 /* statistics related to input message processed */ 513 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 514 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 515 u_quad_t icp6s_checksum; /* bad checksum */ 516 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 517 /* 518 * number of responses: this member is inherited from netinet code, but 519 * for netinet6 code, it is already available in icp6s_outhist[]. 520 */ 521 u_quad_t icp6s_reflect; 522 u_quad_t icp6s_inhist[256]; 523 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 524 struct icmp6errstat icp6s_outerrhist; 525 #define icp6s_odst_unreach_noroute \ 526 icp6s_outerrhist.icp6errs_dst_unreach_noroute 527 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 528 #define icp6s_odst_unreach_beyondscope \ 529 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 530 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 531 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 532 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 533 #define icp6s_otime_exceed_transit \ 534 icp6s_outerrhist.icp6errs_time_exceed_transit 535 #define icp6s_otime_exceed_reassembly \ 536 icp6s_outerrhist.icp6errs_time_exceed_reassembly 537 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 538 #define icp6s_oparamprob_nextheader \ 539 icp6s_outerrhist.icp6errs_paramprob_nextheader 540 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 541 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 542 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 543 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 544 u_quad_t icp6s_nd_badopt; /* bad ND options */ 545 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 546 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 547 u_quad_t icp6s_badrs; /* bad router advertisement */ 548 u_quad_t icp6s_badra; /* bad router advertisement */ 549 u_quad_t icp6s_badredirect; /* bad redirect message */ 550 }; 551 552 /* 553 * Names for ICMP sysctl objects 554 */ 555 #define ICMPV6CTL_STATS 1 556 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 557 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 558 #if 0 /*obsoleted*/ 559 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 560 #endif 561 #define ICMPV6CTL_ND6_PRUNE 6 562 #define ICMPV6CTL_ND6_DELAY 8 563 #define ICMPV6CTL_ND6_UMAXTRIES 9 564 #define ICMPV6CTL_ND6_MMAXTRIES 10 565 #define ICMPV6CTL_ND6_USELOOPBACK 11 566 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 567 #define ICMPV6CTL_NODEINFO 13 568 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 569 #define ICMPV6CTL_ND6_MAXNUDHINT 15 570 #define ICMPV6CTL_MTUDISC_HIWAT 16 571 #define ICMPV6CTL_MTUDISC_LOWAT 17 572 #define ICMPV6CTL_ND6_DEBUG 18 573 #define ICMPV6CTL_MAXID 19 574 575 #define ICMPV6CTL_NAMES { \ 576 { 0, 0 }, \ 577 { 0, 0 }, \ 578 { "rediraccept", CTLTYPE_INT }, \ 579 { "redirtimeout", CTLTYPE_INT }, \ 580 { 0, 0 }, \ 581 { 0, 0 }, \ 582 { "nd6_prune", CTLTYPE_INT }, \ 583 { 0, 0 }, \ 584 { "nd6_delay", CTLTYPE_INT }, \ 585 { "nd6_umaxtries", CTLTYPE_INT }, \ 586 { "nd6_mmaxtries", CTLTYPE_INT }, \ 587 { "nd6_useloopback", CTLTYPE_INT }, \ 588 { 0, 0 }, \ 589 { "nodeinfo", CTLTYPE_INT }, \ 590 { "errppslimit", CTLTYPE_INT }, \ 591 { "nd6_maxnudhint", CTLTYPE_INT }, \ 592 { "mtudisc_hiwat", CTLTYPE_INT }, \ 593 { "mtudisc_lowat", CTLTYPE_INT }, \ 594 { "nd6_debug", CTLTYPE_INT }, \ 595 } 596 597 #define RTF_PROBEMTU RTF_PROTO1 598 599 #ifdef _KERNEL 600 # ifdef __STDC__ 601 struct rtentry; 602 struct rttimer; 603 struct in6_multi; 604 # endif 605 void icmp6_init __P((void)); 606 void icmp6_paramerror __P((struct mbuf *, int)); 607 void icmp6_error __P((struct mbuf *, int, int, int)); 608 int icmp6_input __P((struct mbuf **, int *, int)); 609 void icmp6_fasttimo __P((void)); 610 void icmp6_reflect __P((struct mbuf *, size_t)); 611 void icmp6_prepare __P((struct mbuf *)); 612 void icmp6_redirect_input __P((struct mbuf *, int)); 613 void icmp6_redirect_output __P((struct mbuf *, struct rtentry *)); 614 int icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 615 616 struct ip6ctlparam; 617 void icmp6_mtudisc_update __P((struct ip6ctlparam *, int)); 618 void icmp6_mtudisc_callback_register __P((void (*)(struct in6_addr *))); 619 620 /* XXX: is this the right place for these macros? */ 621 #define icmp6_ifstat_inc(ifp, tag) \ 622 do { \ 623 if ((ifp) && (ifp)->if_index <= if_index \ 624 && (ifp)->if_index < icmp6_ifstatmax \ 625 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) { \ 626 icmp6_ifstat[(ifp)->if_index]->tag++; \ 627 } \ 628 } while (0) 629 630 #define icmp6_ifoutstat_inc(ifp, type, code) \ 631 do { \ 632 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 633 switch(type) { \ 634 case ICMP6_DST_UNREACH: \ 635 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 636 if (code == ICMP6_DST_UNREACH_ADMIN) \ 637 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 638 break; \ 639 case ICMP6_PACKET_TOO_BIG: \ 640 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 641 break; \ 642 case ICMP6_TIME_EXCEEDED: \ 643 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 644 break; \ 645 case ICMP6_PARAM_PROB: \ 646 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 647 break; \ 648 case ICMP6_ECHO_REQUEST: \ 649 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 650 break; \ 651 case ICMP6_ECHO_REPLY: \ 652 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 653 break; \ 654 case MLD6_LISTENER_QUERY: \ 655 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 656 break; \ 657 case MLD6_LISTENER_REPORT: \ 658 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 659 break; \ 660 case MLD6_LISTENER_DONE: \ 661 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 662 break; \ 663 case ND_ROUTER_SOLICIT: \ 664 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 665 break; \ 666 case ND_ROUTER_ADVERT: \ 667 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 668 break; \ 669 case ND_NEIGHBOR_SOLICIT: \ 670 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 671 break; \ 672 case ND_NEIGHBOR_ADVERT: \ 673 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 674 break; \ 675 case ND_REDIRECT: \ 676 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 677 break; \ 678 } \ 679 } while (0) 680 681 extern int icmp6_rediraccept; /* accept/process redirects */ 682 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 683 #endif /* _KERNEL */ 684 685 #endif /* not _NETINET_ICMP6_H_ */ 686