1 /* $FreeBSD$ */ 2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 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_HADISCOV_REQUEST 202 /* XXX To be defined */ 128 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 129 130 #define ICMP6_MAXTYPE 203 131 132 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 133 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 134 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 135 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 136 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 137 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 138 139 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 140 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 141 142 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 143 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 144 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 145 146 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 147 148 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 149 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 150 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 151 152 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 153 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 154 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 155 156 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 157 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 158 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 159 160 /* Used in kernel only */ 161 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 162 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 163 164 /* 165 * Multicast Listener Discovery 166 */ 167 struct mld6_hdr { 168 struct icmp6_hdr mld6_hdr; 169 struct in6_addr mld6_addr; /* multicast address */ 170 } __attribute__((__packed__)); 171 172 #define mld6_type mld6_hdr.icmp6_type 173 #define mld6_code mld6_hdr.icmp6_code 174 #define mld6_cksum mld6_hdr.icmp6_cksum 175 #define mld6_maxdelay mld6_hdr.icmp6_data16[0] 176 #define mld6_reserved mld6_hdr.icmp6_data16[1] 177 178 /* 179 * Neighbor Discovery 180 */ 181 182 struct nd_router_solicit { /* router solicitation */ 183 struct icmp6_hdr nd_rs_hdr; 184 /* could be followed by options */ 185 } __attribute__((__packed__)); 186 187 #define nd_rs_type nd_rs_hdr.icmp6_type 188 #define nd_rs_code nd_rs_hdr.icmp6_code 189 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 190 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 191 192 struct nd_router_advert { /* router advertisement */ 193 struct icmp6_hdr nd_ra_hdr; 194 u_int32_t nd_ra_reachable; /* reachable time */ 195 u_int32_t nd_ra_retransmit; /* retransmit timer */ 196 /* could be followed by options */ 197 } __attribute__((__packed__)); 198 199 #define nd_ra_type nd_ra_hdr.icmp6_type 200 #define nd_ra_code nd_ra_hdr.icmp6_code 201 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 202 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 203 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 204 #define ND_RA_FLAG_MANAGED 0x80 205 #define ND_RA_FLAG_OTHER 0x40 206 #define ND_RA_FLAG_HA 0x20 207 208 /* 209 * Router preference values based on draft-draves-ipngwg-router-selection-01. 210 * These are non-standard definitions. 211 */ 212 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 213 214 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 215 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 216 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 217 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 218 219 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 220 221 struct nd_neighbor_solicit { /* neighbor solicitation */ 222 struct icmp6_hdr nd_ns_hdr; 223 struct in6_addr nd_ns_target; /*target address */ 224 /* could be followed by options */ 225 } __attribute__((__packed__)); 226 227 #define nd_ns_type nd_ns_hdr.icmp6_type 228 #define nd_ns_code nd_ns_hdr.icmp6_code 229 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 230 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 231 232 struct nd_neighbor_advert { /* neighbor advertisement */ 233 struct icmp6_hdr nd_na_hdr; 234 struct in6_addr nd_na_target; /* target address */ 235 /* could be followed by options */ 236 } __attribute__((__packed__)); 237 238 #define nd_na_type nd_na_hdr.icmp6_type 239 #define nd_na_code nd_na_hdr.icmp6_code 240 #define nd_na_cksum nd_na_hdr.icmp6_cksum 241 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 242 #if BYTE_ORDER == BIG_ENDIAN 243 #define ND_NA_FLAG_ROUTER 0x80000000 244 #define ND_NA_FLAG_SOLICITED 0x40000000 245 #define ND_NA_FLAG_OVERRIDE 0x20000000 246 #else 247 #if BYTE_ORDER == LITTLE_ENDIAN 248 #define ND_NA_FLAG_ROUTER 0x80 249 #define ND_NA_FLAG_SOLICITED 0x40 250 #define ND_NA_FLAG_OVERRIDE 0x20 251 #endif 252 #endif 253 254 struct nd_redirect { /* redirect */ 255 struct icmp6_hdr nd_rd_hdr; 256 struct in6_addr nd_rd_target; /* target address */ 257 struct in6_addr nd_rd_dst; /* destination address */ 258 /* could be followed by options */ 259 } __attribute__((__packed__)); 260 261 #define nd_rd_type nd_rd_hdr.icmp6_type 262 #define nd_rd_code nd_rd_hdr.icmp6_code 263 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 264 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 265 266 struct nd_opt_hdr { /* Neighbor discovery option header */ 267 u_int8_t nd_opt_type; 268 u_int8_t nd_opt_len; 269 /* followed by option specific data*/ 270 } __attribute__((__packed__)); 271 272 #define ND_OPT_SOURCE_LINKADDR 1 273 #define ND_OPT_TARGET_LINKADDR 2 274 #define ND_OPT_PREFIX_INFORMATION 3 275 #define ND_OPT_REDIRECTED_HEADER 4 276 #define ND_OPT_MTU 5 277 278 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 279 280 struct nd_opt_prefix_info { /* prefix information */ 281 u_int8_t nd_opt_pi_type; 282 u_int8_t nd_opt_pi_len; 283 u_int8_t nd_opt_pi_prefix_len; 284 u_int8_t nd_opt_pi_flags_reserved; 285 u_int32_t nd_opt_pi_valid_time; 286 u_int32_t nd_opt_pi_preferred_time; 287 u_int32_t nd_opt_pi_reserved2; 288 struct in6_addr nd_opt_pi_prefix; 289 } __attribute__((__packed__)); 290 291 #define ND_OPT_PI_FLAG_ONLINK 0x80 292 #define ND_OPT_PI_FLAG_AUTO 0x40 293 294 struct nd_opt_rd_hdr { /* redirected header */ 295 u_int8_t nd_opt_rh_type; 296 u_int8_t nd_opt_rh_len; 297 u_int16_t nd_opt_rh_reserved1; 298 u_int32_t nd_opt_rh_reserved2; 299 /* followed by IP header and data */ 300 } __attribute__((__packed__)); 301 302 struct nd_opt_mtu { /* MTU option */ 303 u_int8_t nd_opt_mtu_type; 304 u_int8_t nd_opt_mtu_len; 305 u_int16_t nd_opt_mtu_reserved; 306 u_int32_t nd_opt_mtu_mtu; 307 } __attribute__((__packed__)); 308 309 struct nd_opt_route_info { /* route info */ 310 u_int8_t nd_opt_rti_type; 311 u_int8_t nd_opt_rti_len; 312 u_int8_t nd_opt_rti_prefixlen; 313 u_int8_t nd_opt_rti_flags; 314 u_int32_t nd_opt_rti_lifetime; 315 /* followed by prefix */ 316 } __attribute__((__packed__)); 317 318 /* 319 * icmp6 namelookup 320 */ 321 322 struct icmp6_namelookup { 323 struct icmp6_hdr icmp6_nl_hdr; 324 u_int8_t icmp6_nl_nonce[8]; 325 int32_t icmp6_nl_ttl; 326 #if 0 327 u_int8_t icmp6_nl_len; 328 u_int8_t icmp6_nl_name[3]; 329 #endif 330 /* could be followed by options */ 331 } __attribute__((__packed__)); 332 333 /* 334 * icmp6 node information 335 */ 336 struct icmp6_nodeinfo { 337 struct icmp6_hdr icmp6_ni_hdr; 338 u_int8_t icmp6_ni_nonce[8]; 339 /* could be followed by reply data */ 340 } __attribute__((__packed__)); 341 342 #define ni_type icmp6_ni_hdr.icmp6_type 343 #define ni_code icmp6_ni_hdr.icmp6_code 344 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 345 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 346 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 347 348 #define NI_QTYPE_NOOP 0 /* NOOP */ 349 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 350 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 351 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 352 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 353 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 354 355 #if BYTE_ORDER == BIG_ENDIAN 356 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 357 #define NI_FQDN_FLAG_VALIDTTL 0x1 358 #elif BYTE_ORDER == LITTLE_ENDIAN 359 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 360 #define NI_FQDN_FLAG_VALIDTTL 0x0100 361 #endif 362 363 #ifdef NAME_LOOKUPS_04 364 #if BYTE_ORDER == BIG_ENDIAN 365 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 366 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 367 #define NI_NODEADDR_FLAG_GLOBAL 0x4 368 #define NI_NODEADDR_FLAG_ALL 0x8 369 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 370 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 371 #elif BYTE_ORDER == LITTLE_ENDIAN 372 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 373 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 374 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 375 #define NI_NODEADDR_FLAG_ALL 0x0800 376 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 377 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 378 #endif 379 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 380 #if BYTE_ORDER == BIG_ENDIAN 381 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 382 #define NI_NODEADDR_FLAG_ALL 0x2 383 #define NI_NODEADDR_FLAG_COMPAT 0x4 384 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 385 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 386 #define NI_NODEADDR_FLAG_GLOBAL 0x20 387 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 388 #elif BYTE_ORDER == LITTLE_ENDIAN 389 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 390 #define NI_NODEADDR_FLAG_ALL 0x0200 391 #define NI_NODEADDR_FLAG_COMPAT 0x0400 392 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 393 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 394 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 395 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 396 #endif 397 #endif 398 399 struct ni_reply_fqdn { 400 u_int32_t ni_fqdn_ttl; /* TTL */ 401 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 402 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 403 } __attribute__((__packed__)); 404 405 /* 406 * Router Renumbering. as router-renum-08.txt 407 */ 408 struct icmp6_router_renum { /* router renumbering header */ 409 struct icmp6_hdr rr_hdr; 410 u_int8_t rr_segnum; 411 u_int8_t rr_flags; 412 u_int16_t rr_maxdelay; 413 u_int32_t rr_reserved; 414 } __attribute__((__packed__)); 415 416 #define ICMP6_RR_FLAGS_TEST 0x80 417 #define ICMP6_RR_FLAGS_REQRESULT 0x40 418 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 419 #define ICMP6_RR_FLAGS_SPECSITE 0x10 420 #define ICMP6_RR_FLAGS_PREVDONE 0x08 421 422 #define rr_type rr_hdr.icmp6_type 423 #define rr_code rr_hdr.icmp6_code 424 #define rr_cksum rr_hdr.icmp6_cksum 425 #define rr_seqnum rr_hdr.icmp6_data32[0] 426 427 struct rr_pco_match { /* match prefix part */ 428 u_int8_t rpm_code; 429 u_int8_t rpm_len; 430 u_int8_t rpm_ordinal; 431 u_int8_t rpm_matchlen; 432 u_int8_t rpm_minlen; 433 u_int8_t rpm_maxlen; 434 u_int16_t rpm_reserved; 435 struct in6_addr rpm_prefix; 436 } __attribute__((__packed__)); 437 438 #define RPM_PCO_ADD 1 439 #define RPM_PCO_CHANGE 2 440 #define RPM_PCO_SETGLOBAL 3 441 #define RPM_PCO_MAX 4 442 443 struct rr_pco_use { /* use prefix part */ 444 u_int8_t rpu_uselen; 445 u_int8_t rpu_keeplen; 446 u_int8_t rpu_ramask; 447 u_int8_t rpu_raflags; 448 u_int32_t rpu_vltime; 449 u_int32_t rpu_pltime; 450 u_int32_t rpu_flags; 451 struct in6_addr rpu_prefix; 452 } __attribute__((__packed__)); 453 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 454 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 455 456 #if BYTE_ORDER == BIG_ENDIAN 457 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 458 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 459 #elif BYTE_ORDER == LITTLE_ENDIAN 460 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 461 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 462 #endif 463 464 struct rr_result { /* router renumbering result message */ 465 u_int16_t rrr_flags; 466 u_int8_t rrr_ordinal; 467 u_int8_t rrr_matchedlen; 468 u_int32_t rrr_ifid; 469 struct in6_addr rrr_prefix; 470 } __attribute__((__packed__)); 471 #if BYTE_ORDER == BIG_ENDIAN 472 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 473 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 474 #elif BYTE_ORDER == LITTLE_ENDIAN 475 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 476 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 477 #endif 478 479 /* 480 * icmp6 filter structures. 481 */ 482 483 struct icmp6_filter { 484 u_int32_t icmp6_filt[8]; 485 }; 486 487 #ifdef _KERNEL 488 #define ICMP6_FILTER_SETPASSALL(filterp) \ 489 do { \ 490 int i; u_char *p; \ 491 p = (u_char *)filterp; \ 492 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 493 p[i] = 0xff; \ 494 } while (0) 495 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 496 bzero(filterp, sizeof(struct icmp6_filter)) 497 #else /* _KERNEL */ 498 #define ICMP6_FILTER_SETPASSALL(filterp) \ 499 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 500 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 501 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 502 #endif /* _KERNEL */ 503 504 #define ICMP6_FILTER_SETPASS(type, filterp) \ 505 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 506 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 507 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 508 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 509 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 510 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 511 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 512 513 /* 514 * Variables related to this implementation 515 * of the internet control message protocol version 6. 516 */ 517 struct icmp6errstat { 518 u_quad_t icp6errs_dst_unreach_noroute; 519 u_quad_t icp6errs_dst_unreach_admin; 520 u_quad_t icp6errs_dst_unreach_beyondscope; 521 u_quad_t icp6errs_dst_unreach_addr; 522 u_quad_t icp6errs_dst_unreach_noport; 523 u_quad_t icp6errs_packet_too_big; 524 u_quad_t icp6errs_time_exceed_transit; 525 u_quad_t icp6errs_time_exceed_reassembly; 526 u_quad_t icp6errs_paramprob_header; 527 u_quad_t icp6errs_paramprob_nextheader; 528 u_quad_t icp6errs_paramprob_option; 529 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 530 u_quad_t icp6errs_unknown; 531 }; 532 533 struct icmp6stat { 534 /* statistics related to icmp6 packets generated */ 535 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 536 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 537 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 538 u_quad_t icp6s_outhist[256]; 539 /* statistics related to input message processed */ 540 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 541 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 542 u_quad_t icp6s_checksum; /* bad checksum */ 543 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 544 u_quad_t icp6s_reflect; /* number of responses */ 545 u_quad_t icp6s_inhist[256]; 546 u_quad_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_quad_t icp6s_pmtuchg; /* path MTU changes */ 567 u_quad_t icp6s_nd_badopt; /* bad ND options */ 568 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 569 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 570 u_quad_t icp6s_badrs; /* bad router advertisement */ 571 u_quad_t icp6s_badra; /* bad router advertisement */ 572 u_quad_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 RTF_PROBEMTU RTF_PROTO1 625 626 #ifdef _KERNEL 627 # ifdef __STDC__ 628 struct rtentry; 629 struct rttimer; 630 struct in6_multi; 631 # endif 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 *); 641 642 struct ip6ctlparam; 643 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 644 645 /* XXX: is this the right place for these macros? */ 646 #define icmp6_ifstat_inc(ifp, tag) \ 647 do { \ 648 if ((ifp) && (ifp)->if_index <= if_index \ 649 && (ifp)->if_index < icmp6_ifstatmax \ 650 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) { \ 651 icmp6_ifstat[(ifp)->if_index]->tag++; \ 652 } \ 653 } while (0) 654 655 #define icmp6_ifoutstat_inc(ifp, type, code) \ 656 do { \ 657 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 658 if (type < ICMP6_INFOMSG_MASK) \ 659 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 660 switch(type) { \ 661 case ICMP6_DST_UNREACH: \ 662 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 663 if (code == ICMP6_DST_UNREACH_ADMIN) \ 664 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 665 break; \ 666 case ICMP6_PACKET_TOO_BIG: \ 667 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 668 break; \ 669 case ICMP6_TIME_EXCEEDED: \ 670 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 671 break; \ 672 case ICMP6_PARAM_PROB: \ 673 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 674 break; \ 675 case ICMP6_ECHO_REQUEST: \ 676 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 677 break; \ 678 case ICMP6_ECHO_REPLY: \ 679 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 680 break; \ 681 case MLD6_LISTENER_QUERY: \ 682 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 683 break; \ 684 case MLD6_LISTENER_REPORT: \ 685 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 686 break; \ 687 case MLD6_LISTENER_DONE: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 689 break; \ 690 case ND_ROUTER_SOLICIT: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 692 break; \ 693 case ND_ROUTER_ADVERT: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 695 break; \ 696 case ND_NEIGHBOR_SOLICIT: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 698 break; \ 699 case ND_NEIGHBOR_ADVERT: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 701 break; \ 702 case ND_REDIRECT: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 704 break; \ 705 } \ 706 } while (0) 707 708 extern int icmp6_rediraccept; /* accept/process redirects */ 709 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 710 #endif /* _KERNEL */ 711 712 #endif /* not _NETINET_ICMP6_H_ */ 713