1/* $FreeBSD$ */ 2/* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 3 4/*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the project nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35/*- 36 * Copyright (c) 1982, 1986, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 64 */ 65 66#ifndef _NETINET_ICMP6_H_ 67#define _NETINET_ICMP6_H_ 68 69#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 70 - sizeof(struct icmp6_hdr) */ 71 72struct icmp6_hdr { 73 u_int8_t icmp6_type; /* type field */ 74 u_int8_t icmp6_code; /* code field */ 75 u_int16_t icmp6_cksum; /* checksum field */ 76 union { 77 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 78 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 79 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 80 } icmp6_dataun; 81} __packed; 82 83#define icmp6_data32 icmp6_dataun.icmp6_un_data32 84#define icmp6_data16 icmp6_dataun.icmp6_un_data16 85#define icmp6_data8 icmp6_dataun.icmp6_un_data8 86#define icmp6_pptr icmp6_data32[0] /* parameter prob */ 87#define icmp6_mtu icmp6_data32[0] /* packet too big */ 88#define icmp6_id icmp6_data16[0] /* echo request/reply */ 89#define icmp6_seq icmp6_data16[1] /* echo request/reply */ 90#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 91 92#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 93#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 94#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 95#define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 96 97#define ICMP6_ECHO_REQUEST 128 /* echo service */ 98#define ICMP6_ECHO_REPLY 129 /* echo reply */ 99#define MLD_LISTENER_QUERY 130 /* multicast listener query */ 100#define MLD_LISTENER_REPORT 131 /* multicast listener report */ 101#define MLD_LISTENER_DONE 132 /* multicast listener done */ 102#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 103 104/* RFC2292 decls */ 105#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 106#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 107#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 108 109#ifndef _KERNEL 110/* the followings are for backward compatibility to old KAME apps. */ 111#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 112#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 113#define MLD6_LISTENER_DONE MLD_LISTENER_DONE 114#endif 115 116#define ND_ROUTER_SOLICIT 133 /* router solicitation */ 117#define ND_ROUTER_ADVERT 134 /* router advertisement */ 118#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 119#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 120#define ND_REDIRECT 137 /* redirect */ 121 122#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 123 124#define ICMP6_WRUREQUEST 139 /* who are you request */ 125#define ICMP6_WRUREPLY 140 /* who are you reply */ 126#define ICMP6_FQDN_QUERY 139 /* FQDN query */ 127#define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 128#define ICMP6_NI_QUERY 139 /* node information request */ 129#define ICMP6_NI_REPLY 140 /* node information reply */ 130#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 131 132/* The definitions below are experimental. TBA */ 133#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 134#define MLD_MTRACE 201 /* mtrace messages */ 135 136#ifndef _KERNEL 137#define MLD6_MTRACE_RESP MLD_MTRACE_RESP 138#define MLD6_MTRACE MLD_MTRACE 139#endif 140 141#define ICMP6_MAXTYPE 201 142 143#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 144#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 145#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 146#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 147#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 148#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 149#define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 150#define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 151#define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 152 153#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 154#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 155 156#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 157#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 158#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 159 160#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 161 162#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 163#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 164#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 165 166#define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 167#define ICMP6_NI_REFUSED 1 /* node information request is refused */ 168#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 169 170#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 171#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 172#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 173 174/* Used in kernel only */ 175#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 176#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 177 178/* 179 * Multicast Listener Discovery 180 */ 181struct mld_hdr { 182 struct icmp6_hdr mld_icmp6_hdr; 183 struct in6_addr mld_addr; /* multicast address */ 184} __packed; 185 186/* definitions to provide backward compatibility to old KAME applications */ 187#ifndef _KERNEL 188#define mld6_hdr mld_hdr 189#define mld6_type mld_type 190#define mld6_code mld_code 191#define mld6_cksum mld_cksum 192#define mld6_maxdelay mld_maxdelay 193#define mld6_reserved mld_reserved 194#define mld6_addr mld_addr 195#endif 196 197/* shortcut macro definitions */ 198#define mld_type mld_icmp6_hdr.icmp6_type 199#define mld_code mld_icmp6_hdr.icmp6_code 200#define mld_cksum mld_icmp6_hdr.icmp6_cksum 201#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 202#define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 203#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 204#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 205 206/* 207 * Neighbor Discovery 208 */ 209 210struct nd_router_solicit { /* router solicitation */ 211 struct icmp6_hdr nd_rs_hdr; 212 /* could be followed by options */ 213} __packed; 214 215#define nd_rs_type nd_rs_hdr.icmp6_type 216#define nd_rs_code nd_rs_hdr.icmp6_code 217#define nd_rs_cksum nd_rs_hdr.icmp6_cksum 218#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 219 220struct nd_router_advert { /* router advertisement */ 221 struct icmp6_hdr nd_ra_hdr; 222 u_int32_t nd_ra_reachable; /* reachable time */ 223 u_int32_t nd_ra_retransmit; /* retransmit timer */ 224 /* could be followed by options */ 225} __packed; 226 227#define nd_ra_type nd_ra_hdr.icmp6_type 228#define nd_ra_code nd_ra_hdr.icmp6_code 229#define nd_ra_cksum nd_ra_hdr.icmp6_cksum 230#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 231#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 232#define ND_RA_FLAG_MANAGED 0x80 233#define ND_RA_FLAG_OTHER 0x40 234#define ND_RA_FLAG_HA 0x20 235 236/* 237 * Router preference values based on draft-draves-ipngwg-router-selection-01. 238 * These are non-standard definitions. 239 */ 240#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 241 242#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 243#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 244#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 245#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 246 247#ifdef EXPERIMENTAL 248#define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */ 249#endif 250 251#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 252 253struct nd_neighbor_solicit { /* neighbor solicitation */ 254 struct icmp6_hdr nd_ns_hdr; 255 struct in6_addr nd_ns_target; /*target address */ 256 /* could be followed by options */ 257} __packed; 258 259#define nd_ns_type nd_ns_hdr.icmp6_type 260#define nd_ns_code nd_ns_hdr.icmp6_code 261#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 262#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 263 264struct nd_neighbor_advert { /* neighbor advertisement */ 265 struct icmp6_hdr nd_na_hdr; 266 struct in6_addr nd_na_target; /* target address */ 267 /* could be followed by options */ 268} __packed; 269 270#define nd_na_type nd_na_hdr.icmp6_type 271#define nd_na_code nd_na_hdr.icmp6_code 272#define nd_na_cksum nd_na_hdr.icmp6_cksum 273#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 274#if BYTE_ORDER == BIG_ENDIAN 275#define ND_NA_FLAG_ROUTER 0x80000000 276#define ND_NA_FLAG_SOLICITED 0x40000000 277#define ND_NA_FLAG_OVERRIDE 0x20000000 278#else 279#if BYTE_ORDER == LITTLE_ENDIAN 280#define ND_NA_FLAG_ROUTER 0x80 281#define ND_NA_FLAG_SOLICITED 0x40 282#define ND_NA_FLAG_OVERRIDE 0x20 283#endif 284#endif 285 286struct nd_redirect { /* redirect */ 287 struct icmp6_hdr nd_rd_hdr; 288 struct in6_addr nd_rd_target; /* target address */ 289 struct in6_addr nd_rd_dst; /* destination address */ 290 /* could be followed by options */ 291} __packed; 292 293#define nd_rd_type nd_rd_hdr.icmp6_type 294#define nd_rd_code nd_rd_hdr.icmp6_code 295#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 296#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 297 298struct nd_opt_hdr { /* Neighbor discovery option header */ 299 u_int8_t nd_opt_type; 300 u_int8_t nd_opt_len; 301 /* followed by option specific data*/ 302} __packed; 303 304#define ND_OPT_SOURCE_LINKADDR 1 305#define ND_OPT_TARGET_LINKADDR 2 306#define ND_OPT_PREFIX_INFORMATION 3 307#define ND_OPT_REDIRECTED_HEADER 4 308#define ND_OPT_MTU 5 309#define ND_OPT_NONCE 14 /* RFC 3971 */ 310#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 311#define ND_OPT_RDNSS 25 /* RFC 6106 */ 312#define ND_OPT_DNSSL 31 /* RFC 6106 */ 313#define ND_OPT_MAX 31 314 315struct nd_opt_prefix_info { /* prefix information */ 316 u_int8_t nd_opt_pi_type; 317 u_int8_t nd_opt_pi_len; 318 u_int8_t nd_opt_pi_prefix_len; 319 u_int8_t nd_opt_pi_flags_reserved; 320 u_int32_t nd_opt_pi_valid_time; 321 u_int32_t nd_opt_pi_preferred_time; 322 u_int32_t nd_opt_pi_reserved2; 323 struct in6_addr nd_opt_pi_prefix; 324} __packed; 325 326#define ND_OPT_PI_FLAG_ONLINK 0x80 327#define ND_OPT_PI_FLAG_AUTO 0x40 328 329struct nd_opt_rd_hdr { /* redirected header */ 330 u_int8_t nd_opt_rh_type; 331 u_int8_t nd_opt_rh_len; 332 u_int16_t nd_opt_rh_reserved1; 333 u_int32_t nd_opt_rh_reserved2; 334 /* followed by IP header and data */ 335} __packed; 336 337struct nd_opt_mtu { /* MTU option */ 338 u_int8_t nd_opt_mtu_type; 339 u_int8_t nd_opt_mtu_len; 340 u_int16_t nd_opt_mtu_reserved; 341 u_int32_t nd_opt_mtu_mtu; 342} __packed; 343 344#define ND_OPT_NONCE_LEN ((1 * 8) - 2) 345#if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 346#error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 347#endif 348struct nd_opt_nonce { /* nonce option */ 349 u_int8_t nd_opt_nonce_type; 350 u_int8_t nd_opt_nonce_len; 351 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 352} __packed; 353 354struct nd_opt_route_info { /* route info */ 355 u_int8_t nd_opt_rti_type; 356 u_int8_t nd_opt_rti_len; 357 u_int8_t nd_opt_rti_prefixlen; 358 u_int8_t nd_opt_rti_flags; 359 u_int32_t nd_opt_rti_lifetime; 360 /* prefix follows */ 361} __packed; 362 363struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 364 u_int8_t nd_opt_rdnss_type; 365 u_int8_t nd_opt_rdnss_len; 366 u_int16_t nd_opt_rdnss_reserved; 367 u_int32_t nd_opt_rdnss_lifetime; 368 /* followed by list of recursive DNS servers */ 369} __packed; 370 371struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 372 u_int8_t nd_opt_dnssl_type; 373 u_int8_t nd_opt_dnssl_len; 374 u_int16_t nd_opt_dnssl_reserved; 375 u_int32_t nd_opt_dnssl_lifetime; 376 /* followed by list of DNS search domains */ 377} __packed; 378 379/* 380 * icmp6 namelookup 381 */ 382 383struct icmp6_namelookup { 384 struct icmp6_hdr icmp6_nl_hdr; 385 u_int8_t icmp6_nl_nonce[8]; 386 int32_t icmp6_nl_ttl; 387#if 0 388 u_int8_t icmp6_nl_len; 389 u_int8_t icmp6_nl_name[3]; 390#endif 391 /* could be followed by options */ 392} __packed; 393 394/* 395 * icmp6 node information 396 */ 397struct icmp6_nodeinfo { 398 struct icmp6_hdr icmp6_ni_hdr; 399 u_int8_t icmp6_ni_nonce[8]; 400 /* could be followed by reply data */ 401} __packed; 402 403#define ni_type icmp6_ni_hdr.icmp6_type 404#define ni_code icmp6_ni_hdr.icmp6_code 405#define ni_cksum icmp6_ni_hdr.icmp6_cksum 406#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 407#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 408 409#define NI_QTYPE_NOOP 0 /* NOOP */ 410#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 411#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 412#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 413#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 414#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 415 416#if BYTE_ORDER == BIG_ENDIAN 417#define NI_SUPTYPE_FLAG_COMPRESS 0x1 418#define NI_FQDN_FLAG_VALIDTTL 0x1 419#elif BYTE_ORDER == LITTLE_ENDIAN 420#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 421#define NI_FQDN_FLAG_VALIDTTL 0x0100 422#endif 423 424#ifdef NAME_LOOKUPS_04 425#if BYTE_ORDER == BIG_ENDIAN 426#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 427#define NI_NODEADDR_FLAG_SITELOCAL 0x2 428#define NI_NODEADDR_FLAG_GLOBAL 0x4 429#define NI_NODEADDR_FLAG_ALL 0x8 430#define NI_NODEADDR_FLAG_TRUNCATE 0x10 431#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 432#elif BYTE_ORDER == LITTLE_ENDIAN 433#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 434#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 435#define NI_NODEADDR_FLAG_GLOBAL 0x0400 436#define NI_NODEADDR_FLAG_ALL 0x0800 437#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 438#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 439#endif 440#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 441#if BYTE_ORDER == BIG_ENDIAN 442#define NI_NODEADDR_FLAG_TRUNCATE 0x1 443#define NI_NODEADDR_FLAG_ALL 0x2 444#define NI_NODEADDR_FLAG_COMPAT 0x4 445#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 446#define NI_NODEADDR_FLAG_SITELOCAL 0x10 447#define NI_NODEADDR_FLAG_GLOBAL 0x20 448#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 449#elif BYTE_ORDER == LITTLE_ENDIAN 450#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 451#define NI_NODEADDR_FLAG_ALL 0x0200 452#define NI_NODEADDR_FLAG_COMPAT 0x0400 453#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 454#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 455#define NI_NODEADDR_FLAG_GLOBAL 0x2000 456#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 457#endif 458#endif 459 460struct ni_reply_fqdn { 461 u_int32_t ni_fqdn_ttl; /* TTL */ 462 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 463 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 464} __packed; 465 466/* 467 * Router Renumbering. as router-renum-08.txt 468 */ 469struct icmp6_router_renum { /* router renumbering header */ 470 struct icmp6_hdr rr_hdr; 471 u_int8_t rr_segnum; 472 u_int8_t rr_flags; 473 u_int16_t rr_maxdelay; 474 u_int32_t rr_reserved; 475} __packed; 476 477#define ICMP6_RR_FLAGS_TEST 0x80 478#define ICMP6_RR_FLAGS_REQRESULT 0x40 479#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 480#define ICMP6_RR_FLAGS_SPECSITE 0x10 481#define ICMP6_RR_FLAGS_PREVDONE 0x08 482 483#define rr_type rr_hdr.icmp6_type 484#define rr_code rr_hdr.icmp6_code 485#define rr_cksum rr_hdr.icmp6_cksum 486#define rr_seqnum rr_hdr.icmp6_data32[0] 487 488struct rr_pco_match { /* match prefix part */ 489 u_int8_t rpm_code; 490 u_int8_t rpm_len; 491 u_int8_t rpm_ordinal; 492 u_int8_t rpm_matchlen; 493 u_int8_t rpm_minlen; 494 u_int8_t rpm_maxlen; 495 u_int16_t rpm_reserved; 496 struct in6_addr rpm_prefix; 497} __packed; 498 499#define RPM_PCO_ADD 1 500#define RPM_PCO_CHANGE 2 501#define RPM_PCO_SETGLOBAL 3 502#define RPM_PCO_MAX 4 503 504struct rr_pco_use { /* use prefix part */ 505 u_int8_t rpu_uselen; 506 u_int8_t rpu_keeplen; 507 u_int8_t rpu_ramask; 508 u_int8_t rpu_raflags; 509 u_int32_t rpu_vltime; 510 u_int32_t rpu_pltime; 511 u_int32_t rpu_flags; 512 struct in6_addr rpu_prefix; 513} __packed; 514#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 515#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 516 517#if BYTE_ORDER == BIG_ENDIAN 518#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 519#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 520#elif BYTE_ORDER == LITTLE_ENDIAN 521#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 522#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 523#endif 524 525struct rr_result { /* router renumbering result message */ 526 u_int16_t rrr_flags; 527 u_int8_t rrr_ordinal; 528 u_int8_t rrr_matchedlen; 529 u_int32_t rrr_ifid; 530 struct in6_addr rrr_prefix; 531} __packed; 532#if BYTE_ORDER == BIG_ENDIAN 533#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 534#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 535#elif BYTE_ORDER == LITTLE_ENDIAN 536#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 537#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 538#endif 539 540/* 541 * icmp6 filter structures. 542 */ 543 544struct icmp6_filter { 545 u_int32_t icmp6_filt[8]; 546}; 547 548#ifdef _KERNEL 549#define ICMP6_FILTER_SETPASSALL(filterp) \ 550do { \ 551 int i; u_char *p; \ 552 p = (u_char *)filterp; \ 553 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 554 p[i] = 0xff; \ 555} while (/*CONSTCOND*/ 0) 556#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 557 bzero(filterp, sizeof(struct icmp6_filter)) 558#else /* _KERNEL */ 559#define ICMP6_FILTER_SETPASSALL(filterp) \ 560 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 561#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 562 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 563#endif /* _KERNEL */ 564 565#define ICMP6_FILTER_SETPASS(type, filterp) \ 566 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 567#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 568 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 569#define ICMP6_FILTER_WILLPASS(type, filterp) \ 570 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 571#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 572 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 573 574/* 575 * Variables related to this implementation 576 * of the internet control message protocol version 6. 577 */ 578struct icmp6errstat { 579 uint64_t icp6errs_dst_unreach_noroute; 580 uint64_t icp6errs_dst_unreach_admin; 581 uint64_t icp6errs_dst_unreach_beyondscope; 582 uint64_t icp6errs_dst_unreach_addr; 583 uint64_t icp6errs_dst_unreach_noport; 584 uint64_t icp6errs_packet_too_big; 585 uint64_t icp6errs_time_exceed_transit; 586 uint64_t icp6errs_time_exceed_reassembly; 587 uint64_t icp6errs_paramprob_header; 588 uint64_t icp6errs_paramprob_nextheader; 589 uint64_t icp6errs_paramprob_option; 590 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 591 uint64_t icp6errs_unknown; 592}; 593 594struct icmp6stat { 595/* statistics related to icmp6 packets generated */ 596 uint64_t icp6s_error; /* # of calls to icmp6_error */ 597 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 598 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 599 uint64_t icp6s_outhist[256]; 600/* statistics related to input message processed */ 601 uint64_t icp6s_badcode; /* icmp6_code out of range */ 602 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 603 uint64_t icp6s_checksum; /* bad checksum */ 604 uint64_t icp6s_badlen; /* calculated bound mismatch */ 605 /* 606 * number of responses: this member is inherited from netinet code, but 607 * for netinet6 code, it is already available in icp6s_outhist[]. 608 */ 609 uint64_t icp6s_reflect; 610 uint64_t icp6s_inhist[256]; 611 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 612 struct icmp6errstat icp6s_outerrhist; 613#define icp6s_odst_unreach_noroute \ 614 icp6s_outerrhist.icp6errs_dst_unreach_noroute 615#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 616#define icp6s_odst_unreach_beyondscope \ 617 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 618#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 619#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 620#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 621#define icp6s_otime_exceed_transit \ 622 icp6s_outerrhist.icp6errs_time_exceed_transit 623#define icp6s_otime_exceed_reassembly \ 624 icp6s_outerrhist.icp6errs_time_exceed_reassembly 625#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 626#define icp6s_oparamprob_nextheader \ 627 icp6s_outerrhist.icp6errs_paramprob_nextheader 628#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 629#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 630#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 631 uint64_t icp6s_pmtuchg; /* path MTU changes */ 632 uint64_t icp6s_nd_badopt; /* bad ND options */ 633 uint64_t icp6s_badns; /* bad neighbor solicitation */ 634 uint64_t icp6s_badna; /* bad neighbor advertisement */ 635 uint64_t icp6s_badrs; /* bad router solicitation */ 636 uint64_t icp6s_badra; /* bad router advertisement */ 637 uint64_t icp6s_badredirect; /* bad redirect message */ 638 uint64_t icp6s_overflowdefrtr; /* Too many default routers. */ 639 uint64_t icp6s_overflowprfx; /* Too many prefixes. */ 640 uint64_t icp6s_overflownndp; /* Too many neighbour entries. */ 641 uint64_t icp6s_overflowredirect;/* Too many redirects. */ 642 uint64_t icp6s_invlhlim; /* Invalid hop limit. */ 643 uint64_t icp6s_spare[32]; 644}; 645 646#ifdef _KERNEL 647#include <sys/counter.h> 648 649VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 650/* 651 * In-kernel consumers can use these accessor macros directly to update 652 * stats. 653 */ 654#define ICMP6STAT_ADD(name, val) \ 655 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 656#define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 657 658/* 659 * Kernel module consumers must use this accessor macro. 660 */ 661void kmod_icmp6stat_inc(int statnum); 662#define KMOD_ICMP6STAT_INC(name) \ 663 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 664#endif 665 666/* 667 * Names for ICMP sysctl objects 668 */ 669#define ICMPV6CTL_STATS 1 670#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 671#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 672#if 0 /*obsoleted*/ 673#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 674#endif 675#define ICMPV6CTL_ND6_PRUNE 6 676#define ICMPV6CTL_ND6_DELAY 8 677#define ICMPV6CTL_ND6_UMAXTRIES 9 678#define ICMPV6CTL_ND6_MMAXTRIES 10 679#define ICMPV6CTL_ND6_USELOOPBACK 11 680/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 681#define ICMPV6CTL_NODEINFO 13 682#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 683#define ICMPV6CTL_ND6_MAXNUDHINT 15 684#define ICMPV6CTL_MTUDISC_HIWAT 16 685#define ICMPV6CTL_MTUDISC_LOWAT 17 686#define ICMPV6CTL_ND6_DEBUG 18 687#define ICMPV6CTL_ND6_DRLIST 19 688#define ICMPV6CTL_ND6_PRLIST 20 689#define ICMPV6CTL_MLD_MAXSRCFILTER 21 690#define ICMPV6CTL_MLD_SOMAXSRC 22 691#define ICMPV6CTL_MLD_VERSION 23 692#define ICMPV6CTL_ND6_MAXQLEN 24 693#define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 694#define ICMPV6CTL_MAXID 26 695 696#ifdef _KERNEL 697# ifdef __STDC__ 698struct nhop_object; 699struct rttimer; 700struct in6_multi; 701# endif 702void icmp6_paramerror(struct mbuf *, int); 703void icmp6_error(struct mbuf *, int, int, int); 704void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 705int icmp6_input(struct mbuf **, int *, int); 706void icmp6_fasttimo(void); 707void icmp6_slowtimo(void); 708void icmp6_prepare(struct mbuf *); 709void icmp6_redirect_input(struct mbuf *, int); 710void icmp6_redirect_output(struct mbuf *, struct nhop_object *); 711 712struct ip6ctlparam; 713void icmp6_mtudisc_update(struct ip6ctlparam *, int); 714 715/* XXX: is this the right place for these macros? */ 716#define icmp6_ifstat_inc(ifp, tag) \ 717do { \ 718 if (ifp) \ 719 counter_u64_add(((struct in6_ifextra *) \ 720 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 721 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 722} while (/*CONSTCOND*/ 0) 723 724#define icmp6_ifoutstat_inc(ifp, type, code) \ 725do { \ 726 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 727 if (type < ICMP6_INFOMSG_MASK) \ 728 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 729 switch (type) { \ 730 case ICMP6_DST_UNREACH: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 732 if (code == ICMP6_DST_UNREACH_ADMIN) \ 733 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 734 break; \ 735 case ICMP6_PACKET_TOO_BIG: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 737 break; \ 738 case ICMP6_TIME_EXCEEDED: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 740 break; \ 741 case ICMP6_PARAM_PROB: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 743 break; \ 744 case ICMP6_ECHO_REQUEST: \ 745 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 746 break; \ 747 case ICMP6_ECHO_REPLY: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 749 break; \ 750 case MLD_LISTENER_QUERY: \ 751 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 752 break; \ 753 case MLD_LISTENER_REPORT: \ 754 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 755 break; \ 756 case MLD_LISTENER_DONE: \ 757 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 758 break; \ 759 case ND_ROUTER_SOLICIT: \ 760 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 761 break; \ 762 case ND_ROUTER_ADVERT: \ 763 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 764 break; \ 765 case ND_NEIGHBOR_SOLICIT: \ 766 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 767 break; \ 768 case ND_NEIGHBOR_ADVERT: \ 769 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 770 break; \ 771 case ND_REDIRECT: \ 772 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 773 break; \ 774 } \ 775} while (/*CONSTCOND*/ 0) 776 777VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 778VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 779 780#define V_icmp6_rediraccept VNET(icmp6_rediraccept) 781#define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 782 783#define ICMP6_NODEINFO_FQDNOK 0x1 784#define ICMP6_NODEINFO_NODEADDROK 0x2 785#define ICMP6_NODEINFO_TMPADDROK 0x4 786#define ICMP6_NODEINFO_GLOBALOK 0x8 787#endif /* _KERNEL */ 788 789#endif /* not _NETINET_ICMP6_H_ */ 790