1/* 2 * Copyright (c) 2000-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 29 30/* 31 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. Neither the name of the project nor the names of its contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58 59/* 60 * Copyright (c) 1982, 1986, 1993 61 * The Regents of the University of California. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 1. Redistributions of source code must retain the above copyright 67 * notice, this list of conditions and the following disclaimer. 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in the 70 * documentation and/or other materials provided with the distribution. 71 * 3. All advertising materials mentioning features or use of this software 72 * must display the following acknowledgement: 73 * This product includes software developed by the University of 74 * California, Berkeley and its contributors. 75 * 4. Neither the name of the University nor the names of its contributors 76 * may be used to endorse or promote products derived from this software 77 * without specific prior written permission. 78 * 79 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 80 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 81 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 82 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 83 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 84 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 85 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 86 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 87 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 88 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 89 * SUCH DAMAGE. 90 * 91 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 92 */ 93 94#ifndef _NETINET_ICMP6_H_ 95#define _NETINET_ICMP6_H_ 96#include <sys/appleapiopts.h> 97 98#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 99 - sizeof(struct icmp6_hdr) */ 100 101struct icmp6_hdr { 102 u_int8_t icmp6_type; /* type field */ 103 u_int8_t icmp6_code; /* code field */ 104 u_int16_t icmp6_cksum; /* checksum field */ 105 union { 106 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 107 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 108 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 109 } icmp6_dataun; 110} __attribute__((__packed__)); 111 112#define icmp6_data32 icmp6_dataun.icmp6_un_data32 113#define icmp6_data16 icmp6_dataun.icmp6_un_data16 114#define icmp6_data8 icmp6_dataun.icmp6_un_data8 115#define icmp6_pptr icmp6_data32[0] /* parameter prob */ 116#define icmp6_mtu icmp6_data32[0] /* packet too big */ 117#define icmp6_id icmp6_data16[0] /* echo request/reply */ 118#define icmp6_seq icmp6_data16[1] /* echo request/reply */ 119#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 120 121#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 122#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 123#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 124#define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 125 126#define ICMP6_ECHO_REQUEST 128 /* echo service */ 127#define ICMP6_ECHO_REPLY 129 /* echo reply */ 128#define MLD_LISTENER_QUERY 130 /* multicast listener query */ 129#define MLD_LISTENER_REPORT 131 /* multicast listener report */ 130#define MLD_LISTENER_DONE 132 /* multicast listener done */ 131#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 132 133/* RFC2292 decls */ 134#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 135#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 136#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 137 138#ifndef KERNEL 139/* the followings are for backward compatibility to old KAME apps. */ 140#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 141#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 142#define MLD6_LISTENER_DONE MLD_LISTENER_DONE 143#endif 144 145#define ND_ROUTER_SOLICIT 133 /* router solicitation */ 146#define ND_ROUTER_ADVERT 134 /* router advertisement */ 147#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 148#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 149#define ND_REDIRECT 137 /* redirect */ 150 151#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 152 153#define ICMP6_WRUREQUEST 139 /* who are you request */ 154#define ICMP6_WRUREPLY 140 /* who are you reply */ 155#define ICMP6_FQDN_QUERY 139 /* FQDN query */ 156#define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 157#define ICMP6_NI_QUERY 139 /* node information request */ 158#define ICMP6_NI_REPLY 140 /* node information reply */ 159#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 160 161/* The definitions below are experimental. TBA */ 162#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 163#define MLD_MTRACE 201 /* mtrace messages */ 164 165#ifndef KERNEL 166#define MLD6_MTRACE_RESP MLD_MTRACE_RESP 167#define MLD6_MTRACE MLD_MTRACE 168#endif 169 170#define ICMP6_MAXTYPE 201 171 172#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 173#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 174#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 175#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 176#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 177#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 178 179#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 180#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 181 182#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 183#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 184#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 185 186#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 187 188#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 189#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 190#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 191 192#define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 193#define ICMP6_NI_REFUSED 1 /* node information request is refused */ 194#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 195 196#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 197#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 198#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 199 200/* Used in kernel only */ 201#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 202#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 203 204/* 205 * Multicast Listener Discovery 206 */ 207struct mld_hdr { 208 struct icmp6_hdr mld_icmp6_hdr; 209 struct in6_addr mld_addr; /* multicast address */ 210} __attribute__((__packed__)); 211 212/* definitions to provide backward compatibility to old KAME applications */ 213#ifndef KERNEL 214#define mld6_hdr mld_hdr 215#define mld6_type mld_type 216#define mld6_code mld_code 217#define mld6_cksum mld_cksum 218#define mld6_maxdelay mld_maxdelay 219#define mld6_reserved mld_reserved 220#define mld6_addr mld_addr 221#endif 222 223/* shortcut macro definitions */ 224#define mld_type mld_icmp6_hdr.icmp6_type 225#define mld_code mld_icmp6_hdr.icmp6_code 226#define mld_cksum mld_icmp6_hdr.icmp6_cksum 227#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 228#define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 229#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 230#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 231 232/* 233 * Neighbor Discovery 234 */ 235 236struct nd_router_solicit { /* router solicitation */ 237 struct icmp6_hdr nd_rs_hdr; 238 /* could be followed by options */ 239}__attribute__((__packed__)); 240 241#define nd_rs_type nd_rs_hdr.icmp6_type 242#define nd_rs_code nd_rs_hdr.icmp6_code 243#define nd_rs_cksum nd_rs_hdr.icmp6_cksum 244#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 245 246struct nd_router_advert { /* router advertisement */ 247 struct icmp6_hdr nd_ra_hdr; 248 u_int32_t nd_ra_reachable; /* reachable time */ 249 u_int32_t nd_ra_retransmit; /* retransmit timer */ 250 /* could be followed by options */ 251} __attribute__((__packed__)); 252 253#define nd_ra_type nd_ra_hdr.icmp6_type 254#define nd_ra_code nd_ra_hdr.icmp6_code 255#define nd_ra_cksum nd_ra_hdr.icmp6_cksum 256#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 257#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 258#define ND_RA_FLAG_MANAGED 0x80 259#define ND_RA_FLAG_OTHER 0x40 260#define ND_RA_FLAG_HA 0x20 261 262/* 263 * Router preference values based on draft-draves-ipngwg-router-selection-01. 264 * These are non-standard definitions. 265 */ 266#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 267 268#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 269#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 270#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 271#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 272 273#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 274 275struct nd_neighbor_solicit { /* neighbor solicitation */ 276 struct icmp6_hdr nd_ns_hdr; 277 struct in6_addr nd_ns_target; /*target address */ 278 /* could be followed by options */ 279}__attribute__((__packed__)); 280 281#define nd_ns_type nd_ns_hdr.icmp6_type 282#define nd_ns_code nd_ns_hdr.icmp6_code 283#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 284#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 285 286struct nd_neighbor_advert { /* neighbor advertisement */ 287 struct icmp6_hdr nd_na_hdr; 288 struct in6_addr nd_na_target; /* target address */ 289 /* could be followed by options */ 290}__attribute__((__packed__)); 291 292#define nd_na_type nd_na_hdr.icmp6_type 293#define nd_na_code nd_na_hdr.icmp6_code 294#define nd_na_cksum nd_na_hdr.icmp6_cksum 295#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 296#if BYTE_ORDER == BIG_ENDIAN 297#define ND_NA_FLAG_ROUTER 0x80000000 298#define ND_NA_FLAG_SOLICITED 0x40000000 299#define ND_NA_FLAG_OVERRIDE 0x20000000 300#else 301#if BYTE_ORDER == LITTLE_ENDIAN 302#define ND_NA_FLAG_ROUTER 0x80 303#define ND_NA_FLAG_SOLICITED 0x40 304#define ND_NA_FLAG_OVERRIDE 0x20 305#endif 306#endif 307 308struct nd_redirect { /* redirect */ 309 struct icmp6_hdr nd_rd_hdr; 310 struct in6_addr nd_rd_target; /* target address */ 311 struct in6_addr nd_rd_dst; /* destination address */ 312 /* could be followed by options */ 313}__attribute__((__packed__)); 314 315#define nd_rd_type nd_rd_hdr.icmp6_type 316#define nd_rd_code nd_rd_hdr.icmp6_code 317#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 318#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 319 320struct nd_opt_hdr { /* Neighbor discovery option header */ 321 u_int8_t nd_opt_type; 322 u_int8_t nd_opt_len; 323 /* followed by option specific data*/ 324}__attribute__((__packed__)); 325 326#define ND_OPT_SOURCE_LINKADDR 1 327#define ND_OPT_TARGET_LINKADDR 2 328#define ND_OPT_PREFIX_INFORMATION 3 329#define ND_OPT_REDIRECTED_HEADER 4 330#define ND_OPT_MTU 5 331#define ND_OPT_RDNSS 25 /* RFC 5006 */ 332#define ND_OPT_DNSSL 31 /* RFC 6106 */ 333 334#define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 335 336struct nd_opt_prefix_info { /* prefix information */ 337 u_int8_t nd_opt_pi_type; 338 u_int8_t nd_opt_pi_len; 339 u_int8_t nd_opt_pi_prefix_len; 340 u_int8_t nd_opt_pi_flags_reserved; 341 u_int32_t nd_opt_pi_valid_time; 342 u_int32_t nd_opt_pi_preferred_time; 343 u_int32_t nd_opt_pi_reserved2; 344 struct in6_addr nd_opt_pi_prefix; 345}__attribute__((__packed__)); 346 347#define ND_OPT_PI_FLAG_ONLINK 0x80 348#define ND_OPT_PI_FLAG_AUTO 0x40 349 350struct nd_opt_rd_hdr { /* redirected header */ 351 u_int8_t nd_opt_rh_type; 352 u_int8_t nd_opt_rh_len; 353 u_int16_t nd_opt_rh_reserved1; 354 u_int32_t nd_opt_rh_reserved2; 355 /* followed by IP header and data */ 356} __attribute__((__packed__)); 357 358struct nd_opt_mtu { /* MTU option */ 359 u_int8_t nd_opt_mtu_type; 360 u_int8_t nd_opt_mtu_len; 361 u_int16_t nd_opt_mtu_reserved; 362 u_int32_t nd_opt_mtu_mtu; 363}__attribute__((__packed__)); 364 365struct nd_opt_route_info { /* route info */ 366 u_int8_t nd_opt_rti_type; 367 u_int8_t nd_opt_rti_len; 368 u_int8_t nd_opt_rti_prefixlen; 369 u_int8_t nd_opt_rti_flags; 370 u_int32_t nd_opt_rti_lifetime; 371 /* prefix follows */ 372}__attribute__((__packed__)); 373 374struct nd_opt_rdnss { /* recursive domain name system servers */ 375 u_int8_t nd_opt_rdnss_type; 376 u_int8_t nd_opt_rdnss_len; 377 u_int16_t nd_opt_rdnss_reserved; 378 u_int32_t nd_opt_rdnss_lifetime; 379 struct in6_addr nd_opt_rdnss_addr[1]; 380} __attribute__((__packed__)); 381 382struct nd_opt_dnssl { /* domain name search list */ 383 u_int8_t nd_opt_dnssl_type; 384 u_int8_t nd_opt_dnssl_len; 385 u_int16_t nd_opt_dnssl_reserved; 386 u_int32_t nd_opt_dnssl_lifetime; 387 u_int8_t nd_opt_dnssl_domains[8]; 388} __attribute__((__packed__)); 389 390/* 391 * icmp6 namelookup 392 */ 393 394struct icmp6_namelookup { 395 struct icmp6_hdr icmp6_nl_hdr; 396 u_int8_t icmp6_nl_nonce[8]; 397 int32_t icmp6_nl_ttl; 398#if 0 399 u_int8_t icmp6_nl_len; 400 u_int8_t icmp6_nl_name[3]; 401#endif 402 /* could be followed by options */ 403}__attribute__((__packed__)); 404 405/* 406 * icmp6 node information 407 */ 408struct icmp6_nodeinfo { 409 struct icmp6_hdr icmp6_ni_hdr; 410 u_int8_t icmp6_ni_nonce[8]; 411 /* could be followed by reply data */ 412}__attribute__((__packed__)); 413 414#define ni_type icmp6_ni_hdr.icmp6_type 415#define ni_code icmp6_ni_hdr.icmp6_code 416#define ni_cksum icmp6_ni_hdr.icmp6_cksum 417#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 418#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 419 420#define NI_QTYPE_NOOP 0 /* NOOP */ 421#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 422#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 423#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 424#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 425#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 426 427#if BYTE_ORDER == BIG_ENDIAN 428#define NI_SUPTYPE_FLAG_COMPRESS 0x1 429#define NI_FQDN_FLAG_VALIDTTL 0x1 430#elif BYTE_ORDER == LITTLE_ENDIAN 431#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 432#define NI_FQDN_FLAG_VALIDTTL 0x0100 433#endif 434 435#ifdef NAME_LOOKUPS_04 436#if BYTE_ORDER == BIG_ENDIAN 437#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 438#define NI_NODEADDR_FLAG_SITELOCAL 0x2 439#define NI_NODEADDR_FLAG_GLOBAL 0x4 440#define NI_NODEADDR_FLAG_ALL 0x8 441#define NI_NODEADDR_FLAG_TRUNCATE 0x10 442#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 443#elif BYTE_ORDER == LITTLE_ENDIAN 444#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 445#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 446#define NI_NODEADDR_FLAG_GLOBAL 0x0400 447#define NI_NODEADDR_FLAG_ALL 0x0800 448#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 449#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 450#endif 451#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 452#if BYTE_ORDER == BIG_ENDIAN 453#define NI_NODEADDR_FLAG_TRUNCATE 0x1 454#define NI_NODEADDR_FLAG_ALL 0x2 455#define NI_NODEADDR_FLAG_COMPAT 0x4 456#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 457#define NI_NODEADDR_FLAG_SITELOCAL 0x10 458#define NI_NODEADDR_FLAG_GLOBAL 0x20 459#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 460#elif BYTE_ORDER == LITTLE_ENDIAN 461#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 462#define NI_NODEADDR_FLAG_ALL 0x0200 463#define NI_NODEADDR_FLAG_COMPAT 0x0400 464#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 465#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 466#define NI_NODEADDR_FLAG_GLOBAL 0x2000 467#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 468#endif 469#endif 470 471struct ni_reply_fqdn { 472 u_int32_t ni_fqdn_ttl; /* TTL */ 473 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 474 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 475}__attribute__((__packed__)); 476 477/* 478 * Router Renumbering. as router-renum-08.txt 479 */ 480struct icmp6_router_renum { /* router renumbering header */ 481 struct icmp6_hdr rr_hdr; 482 u_int8_t rr_segnum; 483 u_int8_t rr_flags; 484 u_int16_t rr_maxdelay; 485 u_int32_t rr_reserved; 486} __attribute__((__packed__)); 487 488#define ICMP6_RR_FLAGS_TEST 0x80 489#define ICMP6_RR_FLAGS_REQRESULT 0x40 490#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 491#define ICMP6_RR_FLAGS_SPECSITE 0x10 492#define ICMP6_RR_FLAGS_PREVDONE 0x08 493 494#define rr_type rr_hdr.icmp6_type 495#define rr_code rr_hdr.icmp6_code 496#define rr_cksum rr_hdr.icmp6_cksum 497#define rr_seqnum rr_hdr.icmp6_data32[0] 498 499struct rr_pco_match { /* match prefix part */ 500 u_int8_t rpm_code; 501 u_int8_t rpm_len; 502 u_int8_t rpm_ordinal; 503 u_int8_t rpm_matchlen; 504 u_int8_t rpm_minlen; 505 u_int8_t rpm_maxlen; 506 u_int16_t rpm_reserved; 507 struct in6_addr rpm_prefix; 508} __attribute__((__packed__)); 509 510#define RPM_PCO_ADD 1 511#define RPM_PCO_CHANGE 2 512#define RPM_PCO_SETGLOBAL 3 513#define RPM_PCO_MAX 4 514 515struct rr_pco_use { /* use prefix part */ 516 u_int8_t rpu_uselen; 517 u_int8_t rpu_keeplen; 518 u_int8_t rpu_ramask; 519 u_int8_t rpu_raflags; 520 u_int32_t rpu_vltime; 521 u_int32_t rpu_pltime; 522 u_int32_t rpu_flags; 523 struct in6_addr rpu_prefix; 524} __attribute__((__packed__)); 525#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 526#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 527 528#if BYTE_ORDER == BIG_ENDIAN 529#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 530#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 531#elif BYTE_ORDER == LITTLE_ENDIAN 532#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 533#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 534#endif 535 536struct rr_result { /* router renumbering result message */ 537 u_int16_t rrr_flags; 538 u_int8_t rrr_ordinal; 539 u_int8_t rrr_matchedlen; 540 u_int32_t rrr_ifid; 541 struct in6_addr rrr_prefix; 542} __attribute__((__packed__)); 543#if BYTE_ORDER == BIG_ENDIAN 544#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 545#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 546#elif BYTE_ORDER == LITTLE_ENDIAN 547#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 548#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 549#endif 550 551/* 552 * icmp6 filter structures. 553 */ 554 555struct icmp6_filter { 556 u_int32_t icmp6_filt[8]; 557}; 558 559#ifdef KERNEL 560#define ICMP6_FILTER_SETPASSALL(filterp) \ 561do { \ 562 int i; u_char *ptr; \ 563 ptr = (u_char *)filterp; \ 564 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 565 ptr[i] = 0xff; \ 566} while (0) 567#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 568 bzero(filterp, sizeof(struct icmp6_filter)) 569#else /* KERNEL */ 570#define ICMP6_FILTER_SETPASSALL(filterp) \ 571 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 572#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 573 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 574#endif /* KERNEL */ 575 576#define ICMP6_FILTER_SETPASS(type, filterp) \ 577 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 578#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 579 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 580#define ICMP6_FILTER_WILLPASS(type, filterp) \ 581 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 582#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 583 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 584 585/* 586 * Variables related to this implementation 587 * of the internet control message protocol version 6. 588 */ 589struct icmp6errstat { 590 u_quad_t icp6errs_dst_unreach_noroute; 591 u_quad_t icp6errs_dst_unreach_admin; 592 u_quad_t icp6errs_dst_unreach_beyondscope; 593 u_quad_t icp6errs_dst_unreach_addr; 594 u_quad_t icp6errs_dst_unreach_noport; 595 u_quad_t icp6errs_packet_too_big; 596 u_quad_t icp6errs_time_exceed_transit; 597 u_quad_t icp6errs_time_exceed_reassembly; 598 u_quad_t icp6errs_paramprob_header; 599 u_quad_t icp6errs_paramprob_nextheader; 600 u_quad_t icp6errs_paramprob_option; 601 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 602 u_quad_t icp6errs_unknown; 603}; 604 605struct icmp6stat { 606/* statistics related to icmp6 packets generated */ 607 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 608 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 609 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 610 u_quad_t icp6s_outhist[256]; 611/* statistics related to input message processed */ 612 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 613 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 614 u_quad_t icp6s_checksum; /* bad checksum */ 615 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 616 u_quad_t icp6s_reflect; /* number of responses */ 617 u_quad_t icp6s_inhist[256]; 618 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 619 struct icmp6errstat icp6s_outerrhist; 620#define icp6s_odst_unreach_noroute \ 621 icp6s_outerrhist.icp6errs_dst_unreach_noroute 622#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 623#define icp6s_odst_unreach_beyondscope \ 624 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 625#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 626#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 627#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 628#define icp6s_otime_exceed_transit \ 629 icp6s_outerrhist.icp6errs_time_exceed_transit 630#define icp6s_otime_exceed_reassembly \ 631 icp6s_outerrhist.icp6errs_time_exceed_reassembly 632#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 633#define icp6s_oparamprob_nextheader \ 634 icp6s_outerrhist.icp6errs_paramprob_nextheader 635#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 636#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 637#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 638 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 639 u_quad_t icp6s_nd_badopt; /* bad ND options */ 640 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 641 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 642 u_quad_t icp6s_badrs; /* bad router advertisement */ 643 u_quad_t icp6s_badra; /* bad router advertisement */ 644 u_quad_t icp6s_badredirect; /* bad redirect message */ 645}; 646 647/* 648 * Names for ICMP sysctl objects 649 */ 650#define ICMPV6CTL_STATS 1 651#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 652#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 653#if 0 /*obsoleted*/ 654#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 655#endif 656#define ICMPV6CTL_ND6_PRUNE 6 657#define ICMPV6CTL_ND6_DELAY 8 658#define ICMPV6CTL_ND6_UMAXTRIES 9 659#define ICMPV6CTL_ND6_MMAXTRIES 10 660#define ICMPV6CTL_ND6_USELOOPBACK 11 661/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 662#define ICMPV6CTL_NODEINFO 13 663#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 664#define ICMPV6CTL_ND6_MAXNUDHINT 15 665#define ICMPV6CTL_MTUDISC_HIWAT 16 666#define ICMPV6CTL_MTUDISC_LOWAT 17 667#define ICMPV6CTL_ND6_DEBUG 18 668#define ICMPV6CTL_ND6_DRLIST 19 669#define ICMPV6CTL_ND6_PRLIST 20 670#define ICMPV6CTL_MLD_MAXSRCFILTER 21 671#define ICMPV6CTL_MLD_SOMAXSRC 22 672#define ICMPV6CTL_MLD_VERSION 23 673#define ICMPV6CTL_ND6_MAXQLEN 24 674#define ICMPV6CTL_ND6_ACCEPT_6TO4 25 675#define ICMPV6CTL_ND6_OPTIMISTIC_DAD 26 /* RFC 4429 */ 676#define ICMPV6CTL_MAXID 27 677 678#ifdef BSD_KERNEL_PRIVATE 679#define ICMPV6CTL_NAMES { \ 680 { 0, 0 }, \ 681 { 0, 0 }, \ 682 { "rediraccept", CTLTYPE_INT }, \ 683 { "redirtimeout", CTLTYPE_INT }, \ 684 { 0, 0 }, \ 685 { 0, 0 }, \ 686 { "nd6_prune", CTLTYPE_INT }, \ 687 { 0, 0 }, \ 688 { "nd6_delay", CTLTYPE_INT }, \ 689 { "nd6_umaxtries", CTLTYPE_INT }, \ 690 { "nd6_mmaxtries", CTLTYPE_INT }, \ 691 { "nd6_useloopback", CTLTYPE_INT }, \ 692 { 0, 0 }, \ 693 { "nodeinfo", CTLTYPE_INT }, \ 694 { "errppslimit", CTLTYPE_INT }, \ 695 { "nd6_maxnudhint", CTLTYPE_INT }, \ 696 { "mtudisc_hiwat", CTLTYPE_INT }, \ 697 { "mtudisc_lowat", CTLTYPE_INT }, \ 698 { "nd6_debug", CTLTYPE_INT }, \ 699 { 0, 0 }, \ 700 { 0, 0 }, \ 701 { 0, 0 }, \ 702 { 0, 0 }, \ 703 { 0, 0 }, \ 704 { 0, 0 }, \ 705 { "nd6_accept_6to4", CTLTYPE_INT }, \ 706 { "nd6_optimistic_dad", CTLTYPE_INT }, \ 707} 708 709# ifdef __STDC__ 710struct rtentry; 711struct rttimer; 712struct in6_multi; 713# endif 714struct ip6protosw; 715void icmp6_init(struct ip6protosw *, struct domain *); 716void icmp6_paramerror(struct mbuf *, int); 717void icmp6_error(struct mbuf *, int, int, int); 718void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 719int icmp6_input(struct mbuf **, int *, int); 720void icmp6_reflect(struct mbuf *, size_t); 721void icmp6_prepare(struct mbuf *); 722void icmp6_redirect_input(struct mbuf *, int); 723void icmp6_redirect_output(struct mbuf *, struct rtentry *); 724 725struct ip6ctlparam; 726void icmp6_mtudisc_update(struct ip6ctlparam *, int); 727 728extern lck_rw_t icmp6_ifs_rwlock; 729/* XXX: is this the right place for these macros? */ 730/* N.B.: if_inet6data is never freed once set, so we don't need to lock */ 731#define icmp6_ifstat_inc(_ifp, _tag) do { \ 732 if (_ifp != NULL && IN6_IFEXTRA(_ifp) != NULL) { \ 733 IN6_IFEXTRA(_ifp)->icmp6_ifstat._tag++; \ 734 } \ 735} while (0) 736 737#define icmp6_ifoutstat_inc(ifp, type, code) do { \ 738 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 739 if (type < ICMP6_INFOMSG_MASK) \ 740 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 741 switch (type) { \ 742 case ICMP6_DST_UNREACH: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 744 if (code == ICMP6_DST_UNREACH_ADMIN) \ 745 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib);\ 746 break; \ 747 case ICMP6_PACKET_TOO_BIG: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 749 break; \ 750 case ICMP6_TIME_EXCEEDED: \ 751 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 752 break; \ 753 case ICMP6_PARAM_PROB: \ 754 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 755 break; \ 756 case ICMP6_ECHO_REQUEST: \ 757 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 758 break; \ 759 case ICMP6_ECHO_REPLY: \ 760 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 761 break; \ 762 case MLD_LISTENER_QUERY: \ 763 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 764 break; \ 765 case MLD_LISTENER_REPORT: \ 766 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 767 break; \ 768 case MLD_LISTENER_DONE: \ 769 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 770 break; \ 771 case ND_ROUTER_SOLICIT: \ 772 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 773 break; \ 774 case ND_ROUTER_ADVERT: \ 775 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 776 break; \ 777 case ND_NEIGHBOR_SOLICIT: \ 778 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit);\ 779 break; \ 780 case ND_NEIGHBOR_ADVERT: \ 781 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 782 break; \ 783 case ND_REDIRECT: \ 784 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 785 break; \ 786 } \ 787} while (0) 788 789extern int icmp6_rediraccept; /* accept/process redirects */ 790extern int icmp6_redirtimeout; /* cache time for redirect routes */ 791 792#define ICMP6_NODEINFO_FQDNOK 0x1 793#define ICMP6_NODEINFO_NODEADDROK 0x2 794#define ICMP6_NODEINFO_TMPADDROK 0x4 795#define ICMP6_NODEINFO_GLOBALOK 0x8 796 797#endif /* BSD_KERNEL_PRIVATE */ 798 799#endif /* !_NETINET_ICMP6_H_ */ 800