1/* $NetBSD: icmp6.h,v 1.40 2009/10/31 22:32:17 christos 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 71struct 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} __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 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 */ 128 129/* 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 */ 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] 198 199#define MLD_MINLEN 24 200 201/* 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_HOME_AGENT 0x20 230 231/* 232 * Router preference values based on RFC4199. 233 */ 234#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 235 236#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 237#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 238#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 239#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 240 241#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 242 243struct nd_neighbor_solicit { /* neighbor solicitation */ 244 struct icmp6_hdr nd_ns_hdr; 245 struct in6_addr nd_ns_target; /*target address */ 246 /* could be followed by options */ 247} __packed; 248 249#define nd_ns_type nd_ns_hdr.icmp6_type 250#define nd_ns_code nd_ns_hdr.icmp6_code 251#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 252#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 253 254struct nd_neighbor_advert { /* neighbor advertisement */ 255 struct icmp6_hdr nd_na_hdr; 256 struct in6_addr nd_na_target; /* target address */ 257 /* could be followed by options */ 258} __packed; 259 260#define nd_na_type nd_na_hdr.icmp6_type 261#define nd_na_code nd_na_hdr.icmp6_code 262#define nd_na_cksum nd_na_hdr.icmp6_cksum 263#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 264#if BYTE_ORDER == BIG_ENDIAN 265#define ND_NA_FLAG_ROUTER 0x80000000 266#define ND_NA_FLAG_SOLICITED 0x40000000 267#define ND_NA_FLAG_OVERRIDE 0x20000000 268#else 269#if BYTE_ORDER == LITTLE_ENDIAN 270#define ND_NA_FLAG_ROUTER 0x80 271#define ND_NA_FLAG_SOLICITED 0x40 272#define ND_NA_FLAG_OVERRIDE 0x20 273#endif 274#endif 275 276struct nd_redirect { /* redirect */ 277 struct icmp6_hdr nd_rd_hdr; 278 struct in6_addr nd_rd_target; /* target address */ 279 struct in6_addr nd_rd_dst; /* destination address */ 280 /* could be followed by options */ 281} __packed; 282 283#define nd_rd_type nd_rd_hdr.icmp6_type 284#define nd_rd_code nd_rd_hdr.icmp6_code 285#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 286#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 287 288struct nd_opt_hdr { /* Neighbor discovery option header */ 289 u_int8_t nd_opt_type; 290 u_int8_t nd_opt_len; 291 /* followed by option specific data*/ 292} __packed; 293 294#define ND_OPT_SOURCE_LINKADDR 1 295#define ND_OPT_TARGET_LINKADDR 2 296#define ND_OPT_PREFIX_INFORMATION 3 297#define ND_OPT_REDIRECTED_HEADER 4 298#define ND_OPT_MTU 5 299#define ND_OPT_ADVINTERVAL 7 300#define ND_OPT_HOMEAGENT_INFO 8 301#define ND_OPT_SOURCE_ADDRLIST 9 302#define ND_OPT_TARGET_ADDRLIST 10 303#define ND_OPT_RDNSS 25 304/* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 305#define ND_OPT_ROUTE_INFO 200 306/* draft-ietf-mobileip-hmipv6, not officially assigned yet */ 307#define ND_OPT_MAP 201 308 309struct 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 /* prefix follows */ 316}; 317 318struct nd_opt_prefix_info { /* prefix information */ 319 u_int8_t nd_opt_pi_type; 320 u_int8_t nd_opt_pi_len; 321 u_int8_t nd_opt_pi_prefix_len; 322 u_int8_t nd_opt_pi_flags_reserved; 323 u_int32_t nd_opt_pi_valid_time; 324 u_int32_t nd_opt_pi_preferred_time; 325 u_int32_t nd_opt_pi_reserved2; 326 struct in6_addr nd_opt_pi_prefix; 327} __packed; 328 329#define ND_OPT_PI_FLAG_ONLINK 0x80 330#define ND_OPT_PI_FLAG_AUTO 0x40 331 332struct nd_opt_rd_hdr { /* redirected header */ 333 u_int8_t nd_opt_rh_type; 334 u_int8_t nd_opt_rh_len; 335 u_int16_t nd_opt_rh_reserved1; 336 u_int32_t nd_opt_rh_reserved2; 337 /* followed by IP header and data */ 338} __packed; 339 340struct nd_opt_mtu { /* MTU option */ 341 u_int8_t nd_opt_mtu_type; 342 u_int8_t nd_opt_mtu_len; 343 u_int16_t nd_opt_mtu_reserved; 344 u_int32_t nd_opt_mtu_mtu; 345} __packed; 346 347struct nd_opt_rdnss { /* RDNSS option RFC 5006 */ 348 u_int8_t nd_opt_rdnss_type; 349 u_int8_t nd_opt_rdnss_len; 350 u_int16_t nd_opt_rdnss_reserved; 351 u_int32_t nd_opt_rdnss_lifetime; 352 /* followed by list of IP prefixes */ 353} __packed; 354 355/* 356 * icmp6 namelookup 357 */ 358 359struct icmp6_namelookup { 360 struct icmp6_hdr icmp6_nl_hdr; 361 u_int8_t icmp6_nl_nonce[8]; 362 int32_t icmp6_nl_ttl; 363#if 0 364 u_int8_t icmp6_nl_len; 365 u_int8_t icmp6_nl_name[3]; 366#endif 367 /* could be followed by options */ 368} __packed; 369 370/* 371 * icmp6 node information 372 */ 373struct icmp6_nodeinfo { 374 struct icmp6_hdr icmp6_ni_hdr; 375 u_int8_t icmp6_ni_nonce[8]; 376 /* could be followed by reply data */ 377} __packed; 378 379#define ni_type icmp6_ni_hdr.icmp6_type 380#define ni_code icmp6_ni_hdr.icmp6_code 381#define ni_cksum icmp6_ni_hdr.icmp6_cksum 382#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 383#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 384 385#define NI_QTYPE_NOOP 0 /* NOOP */ 386#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 387#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 388#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 389#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 390#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 391 392#if BYTE_ORDER == BIG_ENDIAN 393#define NI_SUPTYPE_FLAG_COMPRESS 0x1 394#define NI_FQDN_FLAG_VALIDTTL 0x1 395#elif BYTE_ORDER == LITTLE_ENDIAN 396#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 397#define NI_FQDN_FLAG_VALIDTTL 0x0100 398#endif 399 400#ifdef NAME_LOOKUPS_04 401#if BYTE_ORDER == BIG_ENDIAN 402#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 403#define NI_NODEADDR_FLAG_SITELOCAL 0x2 404#define NI_NODEADDR_FLAG_GLOBAL 0x4 405#define NI_NODEADDR_FLAG_ALL 0x8 406#define NI_NODEADDR_FLAG_TRUNCATE 0x10 407#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 408#elif BYTE_ORDER == LITTLE_ENDIAN 409#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 410#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 411#define NI_NODEADDR_FLAG_GLOBAL 0x0400 412#define NI_NODEADDR_FLAG_ALL 0x0800 413#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 414#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 415#endif 416#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 417#if BYTE_ORDER == BIG_ENDIAN 418#define NI_NODEADDR_FLAG_TRUNCATE 0x1 419#define NI_NODEADDR_FLAG_ALL 0x2 420#define NI_NODEADDR_FLAG_COMPAT 0x4 421#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 422#define NI_NODEADDR_FLAG_SITELOCAL 0x10 423#define NI_NODEADDR_FLAG_GLOBAL 0x20 424#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 425#elif BYTE_ORDER == LITTLE_ENDIAN 426#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 427#define NI_NODEADDR_FLAG_ALL 0x0200 428#define NI_NODEADDR_FLAG_COMPAT 0x0400 429#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 430#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 431#define NI_NODEADDR_FLAG_GLOBAL 0x2000 432#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 433#endif 434#endif 435 436struct ni_reply_fqdn { 437 u_int32_t ni_fqdn_ttl; /* TTL */ 438 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 439 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 440} __packed; 441 442/* 443 * Router Renumbering. as router-renum-08.txt 444 */ 445struct icmp6_router_renum { /* router renumbering header */ 446 struct icmp6_hdr rr_hdr; 447 u_int8_t rr_segnum; 448 u_int8_t rr_flags; 449 u_int16_t rr_maxdelay; 450 u_int32_t rr_reserved; 451} __packed; 452 453#define ICMP6_RR_FLAGS_TEST 0x80 454#define ICMP6_RR_FLAGS_REQRESULT 0x40 455#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 456#define ICMP6_RR_FLAGS_SPECSITE 0x10 457#define ICMP6_RR_FLAGS_PREVDONE 0x08 458 459#define rr_type rr_hdr.icmp6_type 460#define rr_code rr_hdr.icmp6_code 461#define rr_cksum rr_hdr.icmp6_cksum 462#define rr_seqnum rr_hdr.icmp6_data32[0] 463 464struct rr_pco_match { /* match prefix part */ 465 u_int8_t rpm_code; 466 u_int8_t rpm_len; 467 u_int8_t rpm_ordinal; 468 u_int8_t rpm_matchlen; 469 u_int8_t rpm_minlen; 470 u_int8_t rpm_maxlen; 471 u_int16_t rpm_reserved; 472 struct in6_addr rpm_prefix; 473} __packed; 474 475#define RPM_PCO_ADD 1 476#define RPM_PCO_CHANGE 2 477#define RPM_PCO_SETGLOBAL 3 478#define RPM_PCO_MAX 4 479 480struct rr_pco_use { /* use prefix part */ 481 u_int8_t rpu_uselen; 482 u_int8_t rpu_keeplen; 483 u_int8_t rpu_ramask; 484 u_int8_t rpu_raflags; 485 u_int32_t rpu_vltime; 486 u_int32_t rpu_pltime; 487 u_int32_t rpu_flags; 488 struct in6_addr rpu_prefix; 489} __packed; 490#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 491#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 492 493#if BYTE_ORDER == BIG_ENDIAN 494#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 495#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 496#elif BYTE_ORDER == LITTLE_ENDIAN 497#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 498#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 499#endif 500 501struct rr_result { /* router renumbering result message */ 502 u_int16_t rrr_flags; 503 u_int8_t rrr_ordinal; 504 u_int8_t rrr_matchedlen; 505 u_int32_t rrr_ifid; 506 struct in6_addr rrr_prefix; 507} __packed; 508#if BYTE_ORDER == BIG_ENDIAN 509#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 510#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 511#elif BYTE_ORDER == LITTLE_ENDIAN 512#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 513#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 514#endif 515 516/* 517 * icmp6 filter structures. 518 */ 519 520struct icmp6_filter { 521 u_int32_t icmp6_filt[8]; 522}; 523 524#define ICMP6_FILTER_SETPASSALL(filterp) \ 525 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 526#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 527 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 528#define ICMP6_FILTER_SETPASS(type, filterp) \ 529 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 530#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 531 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 532#define ICMP6_FILTER_WILLPASS(type, filterp) \ 533 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 534#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 535 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 536 537/* 538 * Variables related to this implementation 539 * of the internet control message protocol version 6. 540 */ 541 542/* 543 * IPv6 ICMP statistics. 544 * Each counter is an unsigned 64-bit value. 545 */ 546#define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 547#define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 548#define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 549#define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 550 /* space for 256 counters */ 551#define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 552#define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 553#define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 554#define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 555 /* 556 * number of responses; this member is inherited from the netinet code, 557 * but for netinet6 code, it is already available in outhist[]. 558 */ 559#define ICMP6_STAT_REFLECT 263 560#define ICMP6_STAT_INHIST 264 /* # of input messages */ 561 /* space for 256 counters */ 562#define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 563#define ICMP6_STAT_OUTERRHIST 521 564 /* space for 13 counters */ 565#define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 566#define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 567#define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 568#define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 569#define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 570#define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 571#define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 572 573#define ICMP6_NSTATS 541 574 575#define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 576#define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 577#define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 578#define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 579#define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 580#define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 581#define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 582#define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 583#define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 584#define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 585#define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 586#define ICMP6_ERRSTAT_REDIRECT 11 587#define ICMP6_ERRSTAT_UNKNOWN 12 588 589/* 590 * Names for ICMP sysctl objects 591 */ 592#define ICMPV6CTL_STATS 1 593#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 594#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 595#if 0 /*obsoleted*/ 596#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 597#endif 598#define ICMPV6CTL_ND6_PRUNE 6 599#define ICMPV6CTL_ND6_DELAY 8 600#define ICMPV6CTL_ND6_UMAXTRIES 9 601#define ICMPV6CTL_ND6_MMAXTRIES 10 602#define ICMPV6CTL_ND6_USELOOPBACK 11 603/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 604#define ICMPV6CTL_NODEINFO 13 605#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 606#define ICMPV6CTL_ND6_MAXNUDHINT 15 607#define ICMPV6CTL_MTUDISC_HIWAT 16 608#define ICMPV6CTL_MTUDISC_LOWAT 17 609#define ICMPV6CTL_ND6_DEBUG 18 610#define ICMPV6CTL_ND6_DRLIST 19 611#define ICMPV6CTL_ND6_PRLIST 20 612#define ICMPV6CTL_ND6_MAXQLEN 24 613#define ICMPV6CTL_MAXID 25 614 615#define ICMPV6CTL_NAMES { \ 616 { 0, 0 }, \ 617 { 0, 0 }, \ 618 { "rediraccept", CTLTYPE_INT }, \ 619 { "redirtimeout", CTLTYPE_INT }, \ 620 { 0, 0 }, \ 621 { 0, 0 }, \ 622 { "nd6_prune", CTLTYPE_INT }, \ 623 { 0, 0 }, \ 624 { "nd6_delay", CTLTYPE_INT }, \ 625 { "nd6_umaxtries", CTLTYPE_INT }, \ 626 { "nd6_mmaxtries", CTLTYPE_INT }, \ 627 { "nd6_useloopback", CTLTYPE_INT }, \ 628 { 0, 0 }, \ 629 { "nodeinfo", CTLTYPE_INT }, \ 630 { "errppslimit", CTLTYPE_INT }, \ 631 { "nd6_maxnudhint", CTLTYPE_INT }, \ 632 { "mtudisc_hiwat", CTLTYPE_INT }, \ 633 { "mtudisc_lowat", CTLTYPE_INT }, \ 634 { "nd6_debug", CTLTYPE_INT }, \ 635 { 0, 0 }, \ 636 { 0, 0 }, \ 637 { 0, 0 }, \ 638 { 0, 0 }, \ 639 { 0, 0 }, \ 640 { "nd6_maxqueuelen", CTLTYPE_INT }, \ 641} 642 643#define RTF_PROBEMTU RTF_PROTO1 644 645#ifdef _KERNEL 646struct rtentry; 647struct rttimer; 648struct in6_multi; 649 650void icmp6_init(void); 651void icmp6_paramerror(struct mbuf *, int); 652void icmp6_error(struct mbuf *, int, int, int); 653void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 654int icmp6_input(struct mbuf **, int *, int); 655void icmp6_fasttimo(void); 656void icmp6_reflect(struct mbuf *, size_t); 657void icmp6_prepare(struct mbuf *); 658void icmp6_redirect_input(struct mbuf *, int); 659void icmp6_redirect_output(struct mbuf *, struct rtentry *); 660int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 661 662void icmp6_statinc(u_int); 663 664struct ip6ctlparam; 665void icmp6_mtudisc_update(struct ip6ctlparam *, int); 666void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 667 668/* XXX: is this the right place for these macros? */ 669#define icmp6_ifstat_inc(ifp, tag) \ 670do { \ 671 if (ifp) \ 672 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 673} while (/*CONSTCOND*/ 0) 674 675#define icmp6_ifoutstat_inc(ifp, type, code) \ 676do { \ 677 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 678 switch(type) { \ 679 case ICMP6_DST_UNREACH: \ 680 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 681 if (code == ICMP6_DST_UNREACH_ADMIN) \ 682 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 683 break; \ 684 case ICMP6_PACKET_TOO_BIG: \ 685 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 686 break; \ 687 case ICMP6_TIME_EXCEEDED: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 689 break; \ 690 case ICMP6_PARAM_PROB: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 692 break; \ 693 case ICMP6_ECHO_REQUEST: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 695 break; \ 696 case ICMP6_ECHO_REPLY: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 698 break; \ 699 case MLD_LISTENER_QUERY: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 701 break; \ 702 case MLD_LISTENER_REPORT: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 704 break; \ 705 case MLD_LISTENER_DONE: \ 706 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 707 break; \ 708 case ND_ROUTER_SOLICIT: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 710 break; \ 711 case ND_ROUTER_ADVERT: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 713 break; \ 714 case ND_NEIGHBOR_SOLICIT: \ 715 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 716 break; \ 717 case ND_NEIGHBOR_ADVERT: \ 718 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 719 break; \ 720 case ND_REDIRECT: \ 721 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 722 break; \ 723 } \ 724} while (/*CONSTCOND*/ 0) 725 726extern int icmp6_rediraccept; /* accept/process redirects */ 727extern int icmp6_redirtimeout; /* cache time for redirect routes */ 728#endif /* _KERNEL */ 729 730#endif /* !_NETINET_ICMP6_H_ */ 731