1/* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-3-Clause 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 63#ifndef _NETINET_ICMP6_H_ 64#define _NETINET_ICMP6_H_ 65 66#include <sys/stdint.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#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 102 103/* RFC2292 decls */ 104#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 105#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 106#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 107 108#ifndef _KERNEL 109/* the followings are for backward compatibility to old KAME apps. */ 110#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 111#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 112#define MLD6_LISTENER_DONE MLD_LISTENER_DONE 113#endif 114 115#define ND_ROUTER_SOLICIT 133 /* router solicitation */ 116#define ND_ROUTER_ADVERT 134 /* router advertisement */ 117#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 118#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 119#define ND_REDIRECT 137 /* redirect */ 120 121#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 122 123#define ICMP6_WRUREQUEST 139 /* who are you request */ 124#define ICMP6_WRUREPLY 140 /* who are you reply */ 125#define ICMP6_FQDN_QUERY 139 /* FQDN query */ 126#define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 127#define ICMP6_NI_QUERY 139 /* node information request */ 128#define ICMP6_NI_REPLY 140 /* node information reply */ 129#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 130 131/* The definitions below are experimental. TBA */ 132#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 133#define MLD_MTRACE 201 /* mtrace messages */ 134 135#ifndef _KERNEL 136#define MLD6_MTRACE_RESP MLD_MTRACE_RESP 137#define MLD6_MTRACE MLD_MTRACE 138#endif 139 140#define ICMP6_MAXTYPE 201 141 142#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 143#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 144#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 145#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 146#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 147#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 148#define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 149#define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 150#define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 151 152#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 153#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 154 155#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 156#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 157#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 158 159#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 160 161#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 162#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 163#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 164 165#define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 166#define ICMP6_NI_REFUSED 1 /* node information request is refused */ 167#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 168 169#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 170#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 171#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 172 173/* Used in kernel only */ 174#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 175#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 176 177/* 178 * Multicast Listener Discovery 179 */ 180struct mld_hdr { 181 struct icmp6_hdr mld_icmp6_hdr; 182 struct in6_addr mld_addr; /* multicast address */ 183} __packed; 184 185/* definitions to provide backward compatibility to old KAME applications */ 186#ifndef _KERNEL 187#define mld6_hdr mld_hdr 188#define mld6_type mld_type 189#define mld6_code mld_code 190#define mld6_cksum mld_cksum 191#define mld6_maxdelay mld_maxdelay 192#define mld6_reserved mld_reserved 193#define mld6_addr mld_addr 194#endif 195 196/* shortcut macro definitions */ 197#define mld_type mld_icmp6_hdr.icmp6_type 198#define mld_code mld_icmp6_hdr.icmp6_code 199#define mld_cksum mld_icmp6_hdr.icmp6_cksum 200#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 201#define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 202#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 203#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 204 205/* 206 * Neighbor Discovery 207 */ 208 209struct nd_router_solicit { /* router solicitation */ 210 struct icmp6_hdr nd_rs_hdr; 211 /* could be followed by options */ 212} __packed; 213 214#define nd_rs_type nd_rs_hdr.icmp6_type 215#define nd_rs_code nd_rs_hdr.icmp6_code 216#define nd_rs_cksum nd_rs_hdr.icmp6_cksum 217#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 218 219struct nd_router_advert { /* router advertisement */ 220 struct icmp6_hdr nd_ra_hdr; 221 u_int32_t nd_ra_reachable; /* reachable time */ 222 u_int32_t nd_ra_retransmit; /* retransmit timer */ 223 /* could be followed by options */ 224} __packed; 225 226#define nd_ra_type nd_ra_hdr.icmp6_type 227#define nd_ra_code nd_ra_hdr.icmp6_code 228#define nd_ra_cksum nd_ra_hdr.icmp6_cksum 229#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 230#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 231#define ND_RA_FLAG_MANAGED 0x80 232#define ND_RA_FLAG_OTHER 0x40 233#define ND_RA_FLAG_HA 0x20 234 235/* 236 * Router preference values based on draft-draves-ipngwg-router-selection-01. 237 * These are non-standard definitions. 238 */ 239#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 240 241#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 242#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 243#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 244#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 245 246#ifdef EXPERIMENTAL 247#define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */ 248#endif 249 250#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 251 252struct nd_neighbor_solicit { /* neighbor solicitation */ 253 struct icmp6_hdr nd_ns_hdr; 254 struct in6_addr nd_ns_target; /*target address */ 255 /* could be followed by options */ 256} __packed; 257 258#define nd_ns_type nd_ns_hdr.icmp6_type 259#define nd_ns_code nd_ns_hdr.icmp6_code 260#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 261#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 262 263struct nd_neighbor_advert { /* neighbor advertisement */ 264 struct icmp6_hdr nd_na_hdr; 265 struct in6_addr nd_na_target; /* target address */ 266 /* could be followed by options */ 267} __packed; 268 269#define nd_na_type nd_na_hdr.icmp6_type 270#define nd_na_code nd_na_hdr.icmp6_code 271#define nd_na_cksum nd_na_hdr.icmp6_cksum 272#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 273#if BYTE_ORDER == BIG_ENDIAN 274#define ND_NA_FLAG_ROUTER 0x80000000 275#define ND_NA_FLAG_SOLICITED 0x40000000 276#define ND_NA_FLAG_OVERRIDE 0x20000000 277#else 278#if BYTE_ORDER == LITTLE_ENDIAN 279#define ND_NA_FLAG_ROUTER 0x80 280#define ND_NA_FLAG_SOLICITED 0x40 281#define ND_NA_FLAG_OVERRIDE 0x20 282#endif 283#endif 284 285struct nd_redirect { /* redirect */ 286 struct icmp6_hdr nd_rd_hdr; 287 struct in6_addr nd_rd_target; /* target address */ 288 struct in6_addr nd_rd_dst; /* destination address */ 289 /* could be followed by options */ 290} __packed; 291 292#define nd_rd_type nd_rd_hdr.icmp6_type 293#define nd_rd_code nd_rd_hdr.icmp6_code 294#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 295#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 296 297struct nd_opt_hdr { /* Neighbor discovery option header */ 298 u_int8_t nd_opt_type; 299 u_int8_t nd_opt_len; 300 /* followed by option specific data*/ 301} __packed; 302 303#define ND_OPT_SOURCE_LINKADDR 1 304#define ND_OPT_TARGET_LINKADDR 2 305#define ND_OPT_PREFIX_INFORMATION 3 306#define ND_OPT_REDIRECTED_HEADER 4 307#define ND_OPT_MTU 5 308#define ND_OPT_NONCE 14 /* RFC 3971 */ 309#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 310#define ND_OPT_RDNSS 25 /* RFC 6106 */ 311#define ND_OPT_DNSSL 31 /* RFC 6106 */ 312#define ND_OPT_PREF64 38 /* RFC 8781 */ 313#define ND_OPT_MAX 38 314 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 379struct nd_opt_pref64 { /* PREF64 option (RFC 8781) */ 380 uint8_t nd_opt_pref64_type; 381 uint8_t nd_opt_pref64_len; 382 /* bits 0-12 are the SL, bits 13-15 are the PLC */ 383 uint16_t nd_opt_pref64_sl_plc; 384 char nd_opt_prefix[12]; 385} __packed; 386 387/* 388 * icmp6 namelookup 389 */ 390 391struct icmp6_namelookup { 392 struct icmp6_hdr icmp6_nl_hdr; 393 u_int8_t icmp6_nl_nonce[8]; 394 int32_t icmp6_nl_ttl; 395#if 0 396 u_int8_t icmp6_nl_len; 397 u_int8_t icmp6_nl_name[3]; 398#endif 399 /* could be followed by options */ 400} __packed; 401 402/* 403 * icmp6 node information 404 */ 405struct icmp6_nodeinfo { 406 struct icmp6_hdr icmp6_ni_hdr; 407 u_int8_t icmp6_ni_nonce[8]; 408 /* could be followed by reply data */ 409} __packed; 410 411#define ni_type icmp6_ni_hdr.icmp6_type 412#define ni_code icmp6_ni_hdr.icmp6_code 413#define ni_cksum icmp6_ni_hdr.icmp6_cksum 414#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 415#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 416 417#define NI_QTYPE_NOOP 0 /* NOOP */ 418#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 419#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 420#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 421#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 422#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 423 424#if BYTE_ORDER == BIG_ENDIAN 425#define NI_SUPTYPE_FLAG_COMPRESS 0x1 426#define NI_FQDN_FLAG_VALIDTTL 0x1 427#elif BYTE_ORDER == LITTLE_ENDIAN 428#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 429#define NI_FQDN_FLAG_VALIDTTL 0x0100 430#endif 431 432#ifdef NAME_LOOKUPS_04 433#if BYTE_ORDER == BIG_ENDIAN 434#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 435#define NI_NODEADDR_FLAG_SITELOCAL 0x2 436#define NI_NODEADDR_FLAG_GLOBAL 0x4 437#define NI_NODEADDR_FLAG_ALL 0x8 438#define NI_NODEADDR_FLAG_TRUNCATE 0x10 439#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 440#elif BYTE_ORDER == LITTLE_ENDIAN 441#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 442#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 443#define NI_NODEADDR_FLAG_GLOBAL 0x0400 444#define NI_NODEADDR_FLAG_ALL 0x0800 445#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 446#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 447#endif 448#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 449#if BYTE_ORDER == BIG_ENDIAN 450#define NI_NODEADDR_FLAG_TRUNCATE 0x1 451#define NI_NODEADDR_FLAG_ALL 0x2 452#define NI_NODEADDR_FLAG_COMPAT 0x4 453#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 454#define NI_NODEADDR_FLAG_SITELOCAL 0x10 455#define NI_NODEADDR_FLAG_GLOBAL 0x20 456#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 457#elif BYTE_ORDER == LITTLE_ENDIAN 458#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 459#define NI_NODEADDR_FLAG_ALL 0x0200 460#define NI_NODEADDR_FLAG_COMPAT 0x0400 461#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 462#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 463#define NI_NODEADDR_FLAG_GLOBAL 0x2000 464#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 465#endif 466#endif 467 468struct ni_reply_fqdn { 469 u_int32_t ni_fqdn_ttl; /* TTL */ 470 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 471 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 472} __packed; 473 474/* 475 * Router Renumbering. as router-renum-08.txt 476 */ 477struct icmp6_router_renum { /* router renumbering header */ 478 struct icmp6_hdr rr_hdr; 479 u_int8_t rr_segnum; 480 u_int8_t rr_flags; 481 u_int16_t rr_maxdelay; 482 u_int32_t rr_reserved; 483} __packed; 484 485#define ICMP6_RR_FLAGS_TEST 0x80 486#define ICMP6_RR_FLAGS_REQRESULT 0x40 487#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 488#define ICMP6_RR_FLAGS_SPECSITE 0x10 489#define ICMP6_RR_FLAGS_PREVDONE 0x08 490 491#define rr_type rr_hdr.icmp6_type 492#define rr_code rr_hdr.icmp6_code 493#define rr_cksum rr_hdr.icmp6_cksum 494#define rr_seqnum rr_hdr.icmp6_data32[0] 495 496struct rr_pco_match { /* match prefix part */ 497 u_int8_t rpm_code; 498 u_int8_t rpm_len; 499 u_int8_t rpm_ordinal; 500 u_int8_t rpm_matchlen; 501 u_int8_t rpm_minlen; 502 u_int8_t rpm_maxlen; 503 u_int16_t rpm_reserved; 504 struct in6_addr rpm_prefix; 505} __packed; 506 507#define RPM_PCO_ADD 1 508#define RPM_PCO_CHANGE 2 509#define RPM_PCO_SETGLOBAL 3 510#define RPM_PCO_MAX 4 511 512struct rr_pco_use { /* use prefix part */ 513 u_int8_t rpu_uselen; 514 u_int8_t rpu_keeplen; 515 u_int8_t rpu_ramask; 516 u_int8_t rpu_raflags; 517 u_int32_t rpu_vltime; 518 u_int32_t rpu_pltime; 519 u_int32_t rpu_flags; 520 struct in6_addr rpu_prefix; 521} __packed; 522#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 523#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 524 525#if BYTE_ORDER == BIG_ENDIAN 526#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 527#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 528#elif BYTE_ORDER == LITTLE_ENDIAN 529#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 530#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 531#endif 532 533struct rr_result { /* router renumbering result message */ 534 u_int16_t rrr_flags; 535 u_int8_t rrr_ordinal; 536 u_int8_t rrr_matchedlen; 537 u_int32_t rrr_ifid; 538 struct in6_addr rrr_prefix; 539} __packed; 540#if BYTE_ORDER == BIG_ENDIAN 541#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 542#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 543#elif BYTE_ORDER == LITTLE_ENDIAN 544#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 545#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 546#endif 547 548/* 549 * icmp6 filter structures. 550 */ 551 552struct icmp6_filter { 553 u_int32_t icmp6_filt[8]; 554}; 555 556#ifdef _KERNEL 557#define ICMP6_FILTER_SETPASSALL(filterp) \ 558do { \ 559 int i; u_char *p; \ 560 p = (u_char *)filterp; \ 561 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 562 p[i] = 0xff; \ 563} while (/*CONSTCOND*/ 0) 564#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 565 bzero(filterp, sizeof(struct icmp6_filter)) 566#else /* _KERNEL */ 567#define ICMP6_FILTER_SETPASSALL(filterp) \ 568 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 569#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 570 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 571#endif /* _KERNEL */ 572 573#define ICMP6_FILTER_SETPASS(type, filterp) \ 574 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 575#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 576 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 577#define ICMP6_FILTER_WILLPASS(type, filterp) \ 578 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 579#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 580 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 581 582/* 583 * Variables related to this implementation 584 * of the internet control message protocol version 6. 585 */ 586struct icmp6stat { 587/* statistics related to icmp6 packets generated */ 588 uint64_t icp6s_error; /* # of calls to icmp6_error */ 589 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 590 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 591 uint64_t icp6s_outhist[256]; 592/* statistics related to input message processed */ 593 uint64_t icp6s_badcode; /* icmp6_code out of range */ 594 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 595 uint64_t icp6s_checksum; /* bad checksum */ 596 uint64_t icp6s_badlen; /* calculated bound mismatch */ 597 uint64_t icp6s_dropped; /* # of packets dropped waiting for a resolution */ 598 /* 599 * number of responses: this member is inherited from netinet code, but 600 * for netinet6 code, it is already available in icp6s_outhist[]. 601 */ 602 uint64_t icp6s_reflect; 603 uint64_t icp6s_inhist[256]; 604 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 605 uint64_t icp6s_odst_unreach_noroute; 606 uint64_t icp6s_odst_unreach_admin; 607 uint64_t icp6s_odst_unreach_beyondscope; 608 uint64_t icp6s_odst_unreach_addr; 609 uint64_t icp6s_odst_unreach_noport; 610 uint64_t icp6s_opacket_too_big; 611 uint64_t icp6s_otime_exceed_transit; 612 uint64_t icp6s_otime_exceed_reassembly; 613 uint64_t icp6s_oparamprob_header; 614 uint64_t icp6s_oparamprob_nextheader; 615 uint64_t icp6s_oparamprob_option; 616 uint64_t icp6s_oredirect; 617 uint64_t icp6s_ounknown; 618 uint64_t icp6s_pmtuchg; /* path MTU changes */ 619 uint64_t icp6s_nd_badopt; /* bad ND options */ 620 uint64_t icp6s_badns; /* bad neighbor solicitation */ 621 uint64_t icp6s_badna; /* bad neighbor advertisement */ 622 uint64_t icp6s_badrs; /* bad router solicitation */ 623 uint64_t icp6s_badra; /* bad router advertisement */ 624 uint64_t icp6s_badredirect; /* bad redirect message */ 625 uint64_t icp6s_overflowdefrtr; /* Too many default routers. */ 626 uint64_t icp6s_overflowprfx; /* Too many prefixes. */ 627 uint64_t icp6s_overflownndp; /* Too many neighbour entries. */ 628 uint64_t icp6s_overflowredirect;/* Too many redirects. */ 629 uint64_t icp6s_invlhlim; /* Invalid hop limit. */ 630 uint64_t icp6s_spare[32]; 631}; 632 633#ifdef _KERNEL 634#include <sys/counter.h> 635#include <netinet/in_kdtrace.h> 636 637#ifdef SYSCTL_DECL 638SYSCTL_DECL(_net_inet6_icmp6); 639#endif 640 641VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 642/* 643 * In-kernel consumers can use these accessor macros directly to update 644 * stats. 645 */ 646#define ICMP6STAT_ADD(name, val) \ 647 do { \ 648 MIB_SDT_PROBE1(icmp6, count, name, (val)); \ 649 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)); \ 650 } while (0) 651#define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 652#define ICMP6STAT_INC2(name, type) \ 653 do { \ 654 MIB_SDT_PROBE2(icmp6, count, name, 1, type); \ 655 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, 1); \ 656 } while (0) 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 do { \ 664 MIB_SDT_PROBE1(icmp6, count, name, 1); \ 665 kmod_icmp6stat_inc( \ 666 offsetof(struct icmp6stat, name) / sizeof(uint64_t)); \ 667 } while (0) 668#endif 669 670/* 671 * Names for ICMP sysctl objects 672 */ 673#define ICMPV6CTL_STATS 1 674#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 675#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 676#if 0 /*obsoleted*/ 677#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 678#endif 679#define ICMPV6CTL_ND6_PRUNE 6 680#define ICMPV6CTL_ND6_DELAY 8 681#define ICMPV6CTL_ND6_UMAXTRIES 9 682#define ICMPV6CTL_ND6_MMAXTRIES 10 683#define ICMPV6CTL_ND6_USELOOPBACK 11 684/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 685#define ICMPV6CTL_NODEINFO 13 686#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 687#define ICMPV6CTL_ND6_MAXNUDHINT 15 688#define ICMPV6CTL_MTUDISC_HIWAT 16 689#define ICMPV6CTL_MTUDISC_LOWAT 17 690#define ICMPV6CTL_ND6_DEBUG 18 691#define ICMPV6CTL_ND6_DRLIST 19 692#define ICMPV6CTL_ND6_PRLIST 20 693#define ICMPV6CTL_MLD_MAXSRCFILTER 21 694#define ICMPV6CTL_MLD_SOMAXSRC 22 695#define ICMPV6CTL_MLD_VERSION 23 696#define ICMPV6CTL_ND6_MAXQLEN 24 697#define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 698#define ICMPV6CTL_MAXID 26 699 700#ifdef _KERNEL 701# ifdef __STDC__ 702struct nhop_object; 703struct rttimer; 704struct in6_multi; 705# endif 706void icmp6_paramerror(struct mbuf *, int); 707int icmp6_errmap(const struct icmp6_hdr *); 708void icmp6_error(struct mbuf *, int, int, int); 709void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 710int icmp6_input(struct mbuf **, int *, int); 711void icmp6_prepare(struct mbuf *); 712void icmp6_redirect_input(struct mbuf *, int); 713void icmp6_redirect_output(struct mbuf *, struct nhop_object *); 714int icmp6_ratelimit(const struct in6_addr *, const int, const int); 715 716struct ip6ctlparam; 717void icmp6_mtudisc_update(struct ip6ctlparam *, int); 718 719/* XXX: is this the right place for these macros? */ 720#define icmp6_ifstat_inc(ifp, tag) \ 721do { \ 722 if (ifp) \ 723 counter_u64_add(((struct in6_ifextra *) \ 724 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 725 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 726} while (/*CONSTCOND*/ 0) 727 728#define icmp6_ifoutstat_inc(ifp, type, code) \ 729do { \ 730 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 731 if (type < ICMP6_INFOMSG_MASK) \ 732 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 733 switch (type) { \ 734 case ICMP6_DST_UNREACH: \ 735 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 736 if (code == ICMP6_DST_UNREACH_ADMIN) \ 737 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 738 break; \ 739 case ICMP6_PACKET_TOO_BIG: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 741 break; \ 742 case ICMP6_TIME_EXCEEDED: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 744 break; \ 745 case ICMP6_PARAM_PROB: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 747 break; \ 748 case ICMP6_ECHO_REQUEST: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 750 break; \ 751 case ICMP6_ECHO_REPLY: \ 752 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 753 break; \ 754 case MLD_LISTENER_QUERY: \ 755 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 756 break; \ 757 case MLD_LISTENER_REPORT: \ 758 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 759 break; \ 760 case MLD_LISTENER_DONE: \ 761 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 762 break; \ 763 case ND_ROUTER_SOLICIT: \ 764 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 765 break; \ 766 case ND_ROUTER_ADVERT: \ 767 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 768 break; \ 769 case ND_NEIGHBOR_SOLICIT: \ 770 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 771 break; \ 772 case ND_NEIGHBOR_ADVERT: \ 773 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 774 break; \ 775 case ND_REDIRECT: \ 776 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 777 break; \ 778 } \ 779} while (/*CONSTCOND*/ 0) 780 781#define ICMP6_NODEINFO_FQDNOK 0x1 782#define ICMP6_NODEINFO_NODEADDROK 0x2 783#define ICMP6_NODEINFO_TMPADDROK 0x4 784#define ICMP6_NODEINFO_GLOBALOK 0x8 785#endif /* _KERNEL */ 786 787#endif /* not _NETINET_ICMP6_H_ */ 788