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 * 4. 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 70struct 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#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 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 advertisement */ 116#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 117#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 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#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 129 130/* The definitions below are experimental. TBA */ 131#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 132#define MLD_MTRACE 201 /* mtrace messages */ 133 134#ifndef _KERNEL 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 */ 176struct mld_hdr { 177 struct icmp6_hdr mld_icmp6_hdr; 178 struct in6_addr mld_addr; /* multicast address */ 179} __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#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 199#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 200 201/* 202 * Neighbor Discovery 203 */ 204 205struct nd_router_solicit { /* router solicitation */ 206 struct icmp6_hdr nd_rs_hdr; 207 /* could be followed by options */ 208} __packed; 209 210#define nd_rs_type nd_rs_hdr.icmp6_type 211#define nd_rs_code nd_rs_hdr.icmp6_code 212#define nd_rs_cksum nd_rs_hdr.icmp6_cksum 213#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 214 215struct nd_router_advert { /* router advertisement */ 216 struct icmp6_hdr nd_ra_hdr; 217 u_int32_t nd_ra_reachable; /* reachable time */ 218 u_int32_t nd_ra_retransmit; /* retransmit timer */ 219 /* could be followed by options */ 220} __packed; 221 222#define nd_ra_type nd_ra_hdr.icmp6_type 223#define nd_ra_code nd_ra_hdr.icmp6_code 224#define nd_ra_cksum nd_ra_hdr.icmp6_cksum 225#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 226#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 227#define ND_RA_FLAG_MANAGED 0x80 228#define ND_RA_FLAG_OTHER 0x40 229#define ND_RA_FLAG_HA 0x20 230 231/* 232 * Router preference values based on draft-draves-ipngwg-router-selection-01. 233 * These are non-standard definitions. 234 */ 235#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 236 237#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 238#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 239#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 240#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 241 242#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 243 244struct nd_neighbor_solicit { /* neighbor solicitation */ 245 struct icmp6_hdr nd_ns_hdr; 246 struct in6_addr nd_ns_target; /*target address */ 247 /* could be followed by options */ 248} __packed; 249 250#define nd_ns_type nd_ns_hdr.icmp6_type 251#define nd_ns_code nd_ns_hdr.icmp6_code 252#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 253#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 254 255struct nd_neighbor_advert { /* neighbor advertisement */ 256 struct icmp6_hdr nd_na_hdr; 257 struct in6_addr nd_na_target; /* target address */ 258 /* could be followed by options */ 259} __packed; 260 261#define nd_na_type nd_na_hdr.icmp6_type 262#define nd_na_code nd_na_hdr.icmp6_code 263#define nd_na_cksum nd_na_hdr.icmp6_cksum 264#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 265#if BYTE_ORDER == BIG_ENDIAN 266#define ND_NA_FLAG_ROUTER 0x80000000 267#define ND_NA_FLAG_SOLICITED 0x40000000 268#define ND_NA_FLAG_OVERRIDE 0x20000000 269#else 270#if BYTE_ORDER == LITTLE_ENDIAN 271#define ND_NA_FLAG_ROUTER 0x80 272#define ND_NA_FLAG_SOLICITED 0x40 273#define ND_NA_FLAG_OVERRIDE 0x20 274#endif 275#endif 276 277struct nd_redirect { /* redirect */ 278 struct icmp6_hdr nd_rd_hdr; 279 struct in6_addr nd_rd_target; /* target address */ 280 struct in6_addr nd_rd_dst; /* destination address */ 281 /* could be followed by options */ 282} __packed; 283 284#define nd_rd_type nd_rd_hdr.icmp6_type 285#define nd_rd_code nd_rd_hdr.icmp6_code 286#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 287#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 288 289struct nd_opt_hdr { /* Neighbor discovery option header */ 290 u_int8_t nd_opt_type; 291 u_int8_t nd_opt_len; 292 /* followed by option specific data*/ 293} __packed; 294 295#define ND_OPT_SOURCE_LINKADDR 1 296#define ND_OPT_TARGET_LINKADDR 2 297#define ND_OPT_PREFIX_INFORMATION 3 298#define ND_OPT_REDIRECTED_HEADER 4 299#define ND_OPT_MTU 5 300 301#define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 302 303struct nd_opt_prefix_info { /* prefix information */ 304 u_int8_t nd_opt_pi_type; 305 u_int8_t nd_opt_pi_len; 306 u_int8_t nd_opt_pi_prefix_len; 307 u_int8_t nd_opt_pi_flags_reserved; 308 u_int32_t nd_opt_pi_valid_time; 309 u_int32_t nd_opt_pi_preferred_time; 310 u_int32_t nd_opt_pi_reserved2; 311 struct in6_addr nd_opt_pi_prefix; 312} __packed; 313 314#define ND_OPT_PI_FLAG_ONLINK 0x80 315#define ND_OPT_PI_FLAG_AUTO 0x40 316 317struct nd_opt_rd_hdr { /* redirected header */ 318 u_int8_t nd_opt_rh_type; 319 u_int8_t nd_opt_rh_len; 320 u_int16_t nd_opt_rh_reserved1; 321 u_int32_t nd_opt_rh_reserved2; 322 /* followed by IP header and data */ 323} __packed; 324 325struct nd_opt_mtu { /* MTU option */ 326 u_int8_t nd_opt_mtu_type; 327 u_int8_t nd_opt_mtu_len; 328 u_int16_t nd_opt_mtu_reserved; 329 u_int32_t nd_opt_mtu_mtu; 330} __packed; 331 332struct nd_opt_route_info { /* route info */ 333 u_int8_t nd_opt_rti_type; 334 u_int8_t nd_opt_rti_len; 335 u_int8_t nd_opt_rti_prefixlen; 336 u_int8_t nd_opt_rti_flags; 337 u_int32_t nd_opt_rti_lifetime; 338 /* prefix follows */ 339} __packed; 340 341/* 342 * icmp6 namelookup 343 */ 344 345struct icmp6_namelookup { 346 struct icmp6_hdr icmp6_nl_hdr; 347 u_int8_t icmp6_nl_nonce[8]; 348 int32_t icmp6_nl_ttl; 349#if 0 350 u_int8_t icmp6_nl_len; 351 u_int8_t icmp6_nl_name[3]; 352#endif 353 /* could be followed by options */ 354} __packed; 355 356/* 357 * icmp6 node information 358 */ 359struct icmp6_nodeinfo { 360 struct icmp6_hdr icmp6_ni_hdr; 361 u_int8_t icmp6_ni_nonce[8]; 362 /* could be followed by reply data */ 363} __packed; 364 365#define ni_type icmp6_ni_hdr.icmp6_type 366#define ni_code icmp6_ni_hdr.icmp6_code 367#define ni_cksum icmp6_ni_hdr.icmp6_cksum 368#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 369#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 370 371#define NI_QTYPE_NOOP 0 /* NOOP */ 372#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 373#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 374#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 375#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 376#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 377 378#if BYTE_ORDER == BIG_ENDIAN 379#define NI_SUPTYPE_FLAG_COMPRESS 0x1 380#define NI_FQDN_FLAG_VALIDTTL 0x1 381#elif BYTE_ORDER == LITTLE_ENDIAN 382#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 383#define NI_FQDN_FLAG_VALIDTTL 0x0100 384#endif 385 386#ifdef NAME_LOOKUPS_04 387#if BYTE_ORDER == BIG_ENDIAN 388#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 389#define NI_NODEADDR_FLAG_SITELOCAL 0x2 390#define NI_NODEADDR_FLAG_GLOBAL 0x4 391#define NI_NODEADDR_FLAG_ALL 0x8 392#define NI_NODEADDR_FLAG_TRUNCATE 0x10 393#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 394#elif BYTE_ORDER == LITTLE_ENDIAN 395#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 396#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 397#define NI_NODEADDR_FLAG_GLOBAL 0x0400 398#define NI_NODEADDR_FLAG_ALL 0x0800 399#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 400#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 401#endif 402#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 403#if BYTE_ORDER == BIG_ENDIAN 404#define NI_NODEADDR_FLAG_TRUNCATE 0x1 405#define NI_NODEADDR_FLAG_ALL 0x2 406#define NI_NODEADDR_FLAG_COMPAT 0x4 407#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 408#define NI_NODEADDR_FLAG_SITELOCAL 0x10 409#define NI_NODEADDR_FLAG_GLOBAL 0x20 410#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 411#elif BYTE_ORDER == LITTLE_ENDIAN 412#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 413#define NI_NODEADDR_FLAG_ALL 0x0200 414#define NI_NODEADDR_FLAG_COMPAT 0x0400 415#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 416#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 417#define NI_NODEADDR_FLAG_GLOBAL 0x2000 418#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 419#endif 420#endif 421 422struct ni_reply_fqdn { 423 u_int32_t ni_fqdn_ttl; /* TTL */ 424 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 425 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 426} __packed; 427 428/* 429 * Router Renumbering. as router-renum-08.txt 430 */ 431struct icmp6_router_renum { /* router renumbering header */ 432 struct icmp6_hdr rr_hdr; 433 u_int8_t rr_segnum; 434 u_int8_t rr_flags; 435 u_int16_t rr_maxdelay; 436 u_int32_t rr_reserved; 437} __packed; 438 439#define ICMP6_RR_FLAGS_TEST 0x80 440#define ICMP6_RR_FLAGS_REQRESULT 0x40 441#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 442#define ICMP6_RR_FLAGS_SPECSITE 0x10 443#define ICMP6_RR_FLAGS_PREVDONE 0x08 444 445#define rr_type rr_hdr.icmp6_type 446#define rr_code rr_hdr.icmp6_code 447#define rr_cksum rr_hdr.icmp6_cksum 448#define rr_seqnum rr_hdr.icmp6_data32[0] 449 450struct rr_pco_match { /* match prefix part */ 451 u_int8_t rpm_code; 452 u_int8_t rpm_len; 453 u_int8_t rpm_ordinal; 454 u_int8_t rpm_matchlen; 455 u_int8_t rpm_minlen; 456 u_int8_t rpm_maxlen; 457 u_int16_t rpm_reserved; 458 struct in6_addr rpm_prefix; 459} __packed; 460 461#define RPM_PCO_ADD 1 462#define RPM_PCO_CHANGE 2 463#define RPM_PCO_SETGLOBAL 3 464#define RPM_PCO_MAX 4 465 466struct rr_pco_use { /* use prefix part */ 467 u_int8_t rpu_uselen; 468 u_int8_t rpu_keeplen; 469 u_int8_t rpu_ramask; 470 u_int8_t rpu_raflags; 471 u_int32_t rpu_vltime; 472 u_int32_t rpu_pltime; 473 u_int32_t rpu_flags; 474 struct in6_addr rpu_prefix; 475} __packed; 476#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 477#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 478 479#if BYTE_ORDER == BIG_ENDIAN 480#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 481#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 482#elif BYTE_ORDER == LITTLE_ENDIAN 483#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 484#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 485#endif 486 487struct rr_result { /* router renumbering result message */ 488 u_int16_t rrr_flags; 489 u_int8_t rrr_ordinal; 490 u_int8_t rrr_matchedlen; 491 u_int32_t rrr_ifid; 492 struct in6_addr rrr_prefix; 493} __packed; 494#if BYTE_ORDER == BIG_ENDIAN 495#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 496#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 497#elif BYTE_ORDER == LITTLE_ENDIAN 498#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 499#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 500#endif 501 502/* 503 * icmp6 filter structures. 504 */ 505 506struct icmp6_filter { 507 u_int32_t icmp6_filt[8]; 508}; 509 510#ifdef _KERNEL 511#define ICMP6_FILTER_SETPASSALL(filterp) \ 512do { \ 513 int i; u_char *p; \ 514 p = (u_char *)filterp; \ 515 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 516 p[i] = 0xff; \ 517} while (/*CONSTCOND*/ 0) 518#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 519 bzero(filterp, sizeof(struct icmp6_filter)) 520#else /* _KERNEL */ 521#define ICMP6_FILTER_SETPASSALL(filterp) \ 522 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 523#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 524 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 525#endif /* _KERNEL */ 526 527#define ICMP6_FILTER_SETPASS(type, filterp) \ 528 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 529#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 530 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 531#define ICMP6_FILTER_WILLPASS(type, filterp) \ 532 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 533#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 534 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 535 536/* 537 * Variables related to this implementation 538 * of the internet control message protocol version 6. 539 */ 540struct icmp6errstat { 541 u_quad_t icp6errs_dst_unreach_noroute; 542 u_quad_t icp6errs_dst_unreach_admin; 543 u_quad_t icp6errs_dst_unreach_beyondscope; 544 u_quad_t icp6errs_dst_unreach_addr; 545 u_quad_t icp6errs_dst_unreach_noport; 546 u_quad_t icp6errs_packet_too_big; 547 u_quad_t icp6errs_time_exceed_transit; 548 u_quad_t icp6errs_time_exceed_reassembly; 549 u_quad_t icp6errs_paramprob_header; 550 u_quad_t icp6errs_paramprob_nextheader; 551 u_quad_t icp6errs_paramprob_option; 552 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 553 u_quad_t icp6errs_unknown; 554}; 555 556struct icmp6stat { 557/* statistics related to icmp6 packets generated */ 558 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 559 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 560 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 561 u_quad_t icp6s_outhist[256]; 562/* statistics related to input message processed */ 563 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 564 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 565 u_quad_t icp6s_checksum; /* bad checksum */ 566 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 567 /* 568 * number of responses: this member is inherited from netinet code, but 569 * for netinet6 code, it is already available in icp6s_outhist[]. 570 */ 571 u_quad_t icp6s_reflect; 572 u_quad_t icp6s_inhist[256]; 573 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 574 struct icmp6errstat icp6s_outerrhist; 575#define icp6s_odst_unreach_noroute \ 576 icp6s_outerrhist.icp6errs_dst_unreach_noroute 577#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 578#define icp6s_odst_unreach_beyondscope \ 579 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 580#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 581#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 582#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 583#define icp6s_otime_exceed_transit \ 584 icp6s_outerrhist.icp6errs_time_exceed_transit 585#define icp6s_otime_exceed_reassembly \ 586 icp6s_outerrhist.icp6errs_time_exceed_reassembly 587#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 588#define icp6s_oparamprob_nextheader \ 589 icp6s_outerrhist.icp6errs_paramprob_nextheader 590#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 591#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 592#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 593 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 594 u_quad_t icp6s_nd_badopt; /* bad ND options */ 595 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 596 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 597 u_quad_t icp6s_badrs; /* bad router advertisement */ 598 u_quad_t icp6s_badra; /* bad router advertisement */ 599 u_quad_t icp6s_badredirect; /* bad redirect message */ 600}; 601 602#ifdef _KERNEL 603/* 604 * In-kernel consumers can use these accessor macros directly to update 605 * stats. 606 */ 607#define ICMP6STAT_ADD(name, val) V_icmp6stat.name += (val) 608#define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 609 610/* 611 * Kernel module consumers must use this accessor macro. 612 */ 613void kmod_icmp6stat_inc(int statnum); 614#define KMOD_ICMP6STAT_INC(name) \ 615 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(u_quad_t)) 616#endif 617 618/* 619 * Names for ICMP sysctl objects 620 */ 621#define ICMPV6CTL_STATS 1 622#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 623#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 624#if 0 /*obsoleted*/ 625#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 626#endif 627#define ICMPV6CTL_ND6_PRUNE 6 628#define ICMPV6CTL_ND6_DELAY 8 629#define ICMPV6CTL_ND6_UMAXTRIES 9 630#define ICMPV6CTL_ND6_MMAXTRIES 10 631#define ICMPV6CTL_ND6_USELOOPBACK 11 632/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 633#define ICMPV6CTL_NODEINFO 13 634#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 635#define ICMPV6CTL_ND6_MAXNUDHINT 15 636#define ICMPV6CTL_MTUDISC_HIWAT 16 637#define ICMPV6CTL_MTUDISC_LOWAT 17 638#define ICMPV6CTL_ND6_DEBUG 18 639#define ICMPV6CTL_ND6_DRLIST 19 640#define ICMPV6CTL_ND6_PRLIST 20 641#define ICMPV6CTL_MLD_MAXSRCFILTER 21 642#define ICMPV6CTL_MLD_SOMAXSRC 22 643#define ICMPV6CTL_MLD_VERSION 23 644#define ICMPV6CTL_ND6_MAXQLEN 24 645#define ICMPV6CTL_MAXID 25 646 647#define RTF_PROBEMTU RTF_PROTO1 648 649#ifdef _KERNEL 650# ifdef __STDC__ 651struct rtentry; 652struct rttimer; 653struct in6_multi; 654# endif
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655void icmp6_paramerror(struct mbuf *, int); 656void icmp6_error(struct mbuf *, int, int, int); 657void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 658int icmp6_input(struct mbuf **, int *, int); 659void icmp6_fasttimo(void); 660void icmp6_slowtimo(void); 661void icmp6_reflect(struct mbuf *, size_t); 662void icmp6_prepare(struct mbuf *); 663void icmp6_redirect_input(struct mbuf *, int); 664void icmp6_redirect_output(struct mbuf *, struct rtentry *); 665 666struct ip6ctlparam; 667void icmp6_mtudisc_update(struct ip6ctlparam *, int); 668 669/* XXX: is this the right place for these macros? */ 670#define icmp6_ifstat_inc(ifp, tag) \ 671do { \ 672 if (ifp) \ 673 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 674} while (/*CONSTCOND*/ 0) 675 676#define icmp6_ifoutstat_inc(ifp, type, code) \ 677do { \ 678 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 679 if (type < ICMP6_INFOMSG_MASK) \ 680 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 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 (/*CONSTCOND*/ 0) 728 729VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 730VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 731 732#define V_icmp6_rediraccept VNET(icmp6_rediraccept) 733#define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 734 735#define ICMP6_NODEINFO_FQDNOK 0x1 736#define ICMP6_NODEINFO_NODEADDROK 0x2 737#define ICMP6_NODEINFO_TMPADDROK 0x4 738#define ICMP6_NODEINFO_GLOBALOK 0x8 739#endif /* _KERNEL */ 740 741#endif /* not _NETINET_ICMP6_H_ */
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