icmp6.h revision 3a040d8379a3b1f9731ae93e1a7118c589f1936e
1/* $NetBSD: icmp6.h,v 1.47 2013/07/01 12:43:15 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#include <netinet/in.h> /* android-added: glibc source compatibility. */ 69 70#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 71 - sizeof(struct icmp6_hdr) */ 72 73struct icmp6_hdr { 74 u_int8_t icmp6_type; /* type field */ 75 u_int8_t icmp6_code; /* code field */ 76 u_int16_t icmp6_cksum; /* checksum field */ 77 union { 78 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 79 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 80 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 81 } icmp6_dataun; 82} __packed; 83 84#define icmp6_data32 icmp6_dataun.icmp6_un_data32 85#define icmp6_data16 icmp6_dataun.icmp6_un_data16 86#define icmp6_data8 icmp6_dataun.icmp6_un_data8 87#define icmp6_pptr icmp6_data32[0] /* parameter prob */ 88#define icmp6_mtu icmp6_data32[0] /* packet too big */ 89#define icmp6_id icmp6_data16[0] /* echo request/reply */ 90#define icmp6_seq icmp6_data16[1] /* echo request/reply */ 91#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 92 93#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 94#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 95#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 96#define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 97 98#define ICMP6_ECHO_REQUEST 128 /* echo service */ 99#define ICMP6_ECHO_REPLY 129 /* echo reply */ 100#define MLD_LISTENER_QUERY 130 /* multicast listener query */ 101#define MLD_LISTENER_REPORT 131 /* multicast listener report */ 102#define MLD_LISTENER_DONE 132 /* multicast listener done */ 103#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 104 105/* RFC2292 decls */ 106#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 107#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 108#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 109 110#ifndef _KERNEL 111/* the followings are for backward compatibility to old KAME apps. */ 112#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 113#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 114#define MLD6_LISTENER_DONE MLD_LISTENER_DONE 115#endif 116 117#define ND_ROUTER_SOLICIT 133 /* router solicitation */ 118#define ND_ROUTER_ADVERT 134 /* router advertisement */ 119#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 120#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 121#define ND_REDIRECT 137 /* redirect */ 122 123#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 124 125#define ICMP6_WRUREQUEST 139 /* who are you request */ 126#define ICMP6_WRUREPLY 140 /* who are you reply */ 127#define ICMP6_FQDN_QUERY 139 /* FQDN query */ 128#define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 129#define ICMP6_NI_QUERY 139 /* node information request */ 130#define ICMP6_NI_REPLY 140 /* node information reply */ 131#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 132 133/* The definitions below are experimental. TBA */ 134#define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 135#define MLD_MTRACE 201 /* mtrace messages */ 136 137#ifndef _KERNEL 138/* the followings are for backward compatibility to old KAME apps. */ 139#define MLD6_MTRACE_RESP MLD_MTRACE_RESP 140#define MLD6_MTRACE MLD_MTRACE 141#endif 142 143#define ICMP6_MAXTYPE 201 144 145#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 146#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 147#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 148#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 149#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 150#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 151#define ICMP6_DST_UNREACH_POLICY 5 /* source address failed ingress/egress policy */ 152#define ICMP6_DST_UNREACH_REJROUTE 6 /* reject route to destination */ 153#define ICMP6_DST_UNREACH_SOURCERT 7 /* error in source routing header */ 154 155#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 156#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 157 158#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 159#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 160#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 161 162#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 163 164#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 165#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 166#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 167 168#define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 169#define ICMP6_NI_REFUSED 1 /* node information request is refused */ 170#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 171 172#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 173#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 174#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 175 176/* Used in kernel only */ 177#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 178#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 179 180/* 181 * Multicast Listener Discovery 182 */ 183struct mld_hdr { 184 struct icmp6_hdr mld_icmp6_hdr; 185 struct in6_addr mld_addr; /* multicast address */ 186} __packed; 187 188/* definitions to provide backward compatibility to old KAME applications */ 189#ifndef _KERNEL 190#define mld6_hdr mld_hdr 191#define mld6_type mld_type 192#define mld6_code mld_code 193#define mld6_cksum mld_cksum 194#define mld6_maxdelay mld_maxdelay 195#define mld6_reserved mld_reserved 196#define mld6_addr mld_addr 197#endif 198 199/* shortcut macro definitions */ 200#define mld_type mld_icmp6_hdr.icmp6_type 201#define mld_code mld_icmp6_hdr.icmp6_code 202#define mld_cksum mld_icmp6_hdr.icmp6_cksum 203#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 204#define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 205 206#define MLD_MINLEN 24 207 208/* 209 * Neighbor Discovery 210 */ 211 212struct nd_router_solicit { /* router solicitation */ 213 struct icmp6_hdr nd_rs_hdr; 214 /* could be followed by options */ 215} __packed; 216 217#define nd_rs_type nd_rs_hdr.icmp6_type 218#define nd_rs_code nd_rs_hdr.icmp6_code 219#define nd_rs_cksum nd_rs_hdr.icmp6_cksum 220#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 221 222struct nd_router_advert { /* router advertisement */ 223 struct icmp6_hdr nd_ra_hdr; 224 u_int32_t nd_ra_reachable; /* reachable time */ 225 u_int32_t nd_ra_retransmit; /* retransmit timer */ 226 /* could be followed by options */ 227} __packed; 228 229#define nd_ra_type nd_ra_hdr.icmp6_type 230#define nd_ra_code nd_ra_hdr.icmp6_code 231#define nd_ra_cksum nd_ra_hdr.icmp6_cksum 232#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 233#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 234#define ND_RA_FLAG_MANAGED 0x80 235#define ND_RA_FLAG_OTHER 0x40 236#define ND_RA_FLAG_HOME_AGENT 0x20 237 238/* 239 * Router preference values based on RFC4191. 240 */ 241#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 242 243#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 244#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 245#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 246#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 247 248#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 249 250struct nd_neighbor_solicit { /* neighbor solicitation */ 251 struct icmp6_hdr nd_ns_hdr; 252 struct in6_addr nd_ns_target; /*target address */ 253 /* could be followed by options */ 254} __packed; 255 256#define nd_ns_type nd_ns_hdr.icmp6_type 257#define nd_ns_code nd_ns_hdr.icmp6_code 258#define nd_ns_cksum nd_ns_hdr.icmp6_cksum 259#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 260 261struct nd_neighbor_advert { /* neighbor advertisement */ 262 struct icmp6_hdr nd_na_hdr; 263 struct in6_addr nd_na_target; /* target address */ 264 /* could be followed by options */ 265} __packed; 266 267#define nd_na_type nd_na_hdr.icmp6_type 268#define nd_na_code nd_na_hdr.icmp6_code 269#define nd_na_cksum nd_na_hdr.icmp6_cksum 270#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 271#if BYTE_ORDER == BIG_ENDIAN 272#define ND_NA_FLAG_ROUTER 0x80000000 273#define ND_NA_FLAG_SOLICITED 0x40000000 274#define ND_NA_FLAG_OVERRIDE 0x20000000 275#else 276#if BYTE_ORDER == LITTLE_ENDIAN 277#define ND_NA_FLAG_ROUTER 0x80 278#define ND_NA_FLAG_SOLICITED 0x40 279#define ND_NA_FLAG_OVERRIDE 0x20 280#endif 281#endif 282 283struct nd_redirect { /* redirect */ 284 struct icmp6_hdr nd_rd_hdr; 285 struct in6_addr nd_rd_target; /* target address */ 286 struct in6_addr nd_rd_dst; /* destination address */ 287 /* could be followed by options */ 288} __packed; 289 290#define nd_rd_type nd_rd_hdr.icmp6_type 291#define nd_rd_code nd_rd_hdr.icmp6_code 292#define nd_rd_cksum nd_rd_hdr.icmp6_cksum 293#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 294 295struct nd_opt_hdr { /* Neighbor discovery option header */ 296 u_int8_t nd_opt_type; 297 u_int8_t nd_opt_len; 298 /* followed by option specific data*/ 299} __packed; 300 301#define ND_OPT_SOURCE_LINKADDR 1 302#define ND_OPT_TARGET_LINKADDR 2 303#define ND_OPT_PREFIX_INFORMATION 3 304#define ND_OPT_REDIRECTED_HEADER 4 305#define ND_OPT_MTU 5 306#define ND_OPT_ADVINTERVAL 7 307#define ND_OPT_HOMEAGENT_INFO 8 308#define ND_OPT_SOURCE_ADDRLIST 9 309#define ND_OPT_TARGET_ADDRLIST 10 310#define ND_OPT_MAP 23 /* RFC 5380 */ 311#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 312#define ND_OPT_RDNSS 25 /* RFC 6016 */ 313#define ND_OPT_DNSSL 31 /* RFC 6016 */ 314 315struct nd_opt_route_info { /* route info */ 316 u_int8_t nd_opt_rti_type; 317 u_int8_t nd_opt_rti_len; 318 u_int8_t nd_opt_rti_prefixlen; 319 u_int8_t nd_opt_rti_flags; 320 u_int32_t nd_opt_rti_lifetime; 321 /* prefix follows */ 322}; 323 324struct nd_opt_prefix_info { /* prefix information */ 325 u_int8_t nd_opt_pi_type; 326 u_int8_t nd_opt_pi_len; 327 u_int8_t nd_opt_pi_prefix_len; 328 u_int8_t nd_opt_pi_flags_reserved; 329 u_int32_t nd_opt_pi_valid_time; 330 u_int32_t nd_opt_pi_preferred_time; 331 u_int32_t nd_opt_pi_reserved2; 332 struct in6_addr nd_opt_pi_prefix; 333} __packed; 334 335#define ND_OPT_PI_FLAG_ONLINK 0x80 336#define ND_OPT_PI_FLAG_AUTO 0x40 337 338struct nd_opt_rd_hdr { /* redirected header */ 339 u_int8_t nd_opt_rh_type; 340 u_int8_t nd_opt_rh_len; 341 u_int16_t nd_opt_rh_reserved1; 342 u_int32_t nd_opt_rh_reserved2; 343 /* followed by IP header and data */ 344} __packed; 345 346struct nd_opt_mtu { /* MTU option */ 347 u_int8_t nd_opt_mtu_type; 348 u_int8_t nd_opt_mtu_len; 349 u_int16_t nd_opt_mtu_reserved; 350 u_int32_t nd_opt_mtu_mtu; 351} __packed; 352 353struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ 354 u_int8_t nd_opt_rdnss_type; 355 u_int8_t nd_opt_rdnss_len; 356 u_int16_t nd_opt_rdnss_reserved; 357 u_int32_t nd_opt_rdnss_lifetime; 358 /* followed by list of IP prefixes */ 359} __packed; 360 361struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ 362 u_int8_t nd_opt_dnssl_type; 363 u_int8_t nd_opt_dnssl_len; 364 u_int16_t nd_opt_dnssl_reserved; 365 u_int32_t nd_opt_dnssl_lifetime; 366 /* followed by list of IP prefixes */ 367} __packed; 368 369/* 370 * icmp6 namelookup 371 */ 372 373struct icmp6_namelookup { 374 struct icmp6_hdr icmp6_nl_hdr; 375 u_int8_t icmp6_nl_nonce[8]; 376 int32_t icmp6_nl_ttl; 377#if 0 378 u_int8_t icmp6_nl_len; 379 u_int8_t icmp6_nl_name[3]; 380#endif 381 /* could be followed by options */ 382} __packed; 383 384/* 385 * icmp6 node information 386 */ 387struct icmp6_nodeinfo { 388 struct icmp6_hdr icmp6_ni_hdr; 389 u_int8_t icmp6_ni_nonce[8]; 390 /* could be followed by reply data */ 391} __packed; 392 393#define ni_type icmp6_ni_hdr.icmp6_type 394#define ni_code icmp6_ni_hdr.icmp6_code 395#define ni_cksum icmp6_ni_hdr.icmp6_cksum 396#define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 397#define ni_flags icmp6_ni_hdr.icmp6_data16[1] 398 399#define NI_QTYPE_NOOP 0 /* NOOP */ 400#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 401#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 402#define NI_QTYPE_DNSNAME 2 /* DNS Name */ 403#define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 404#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 405 406#if BYTE_ORDER == BIG_ENDIAN 407#define NI_SUPTYPE_FLAG_COMPRESS 0x1 408#define NI_FQDN_FLAG_VALIDTTL 0x1 409#elif BYTE_ORDER == LITTLE_ENDIAN 410#define NI_SUPTYPE_FLAG_COMPRESS 0x0100 411#define NI_FQDN_FLAG_VALIDTTL 0x0100 412#endif 413 414#ifdef NAME_LOOKUPS_04 415#if BYTE_ORDER == BIG_ENDIAN 416#define NI_NODEADDR_FLAG_LINKLOCAL 0x1 417#define NI_NODEADDR_FLAG_SITELOCAL 0x2 418#define NI_NODEADDR_FLAG_GLOBAL 0x4 419#define NI_NODEADDR_FLAG_ALL 0x8 420#define NI_NODEADDR_FLAG_TRUNCATE 0x10 421#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 422#elif BYTE_ORDER == LITTLE_ENDIAN 423#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 424#define NI_NODEADDR_FLAG_SITELOCAL 0x0200 425#define NI_NODEADDR_FLAG_GLOBAL 0x0400 426#define NI_NODEADDR_FLAG_ALL 0x0800 427#define NI_NODEADDR_FLAG_TRUNCATE 0x1000 428#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 429#endif 430#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 431#if BYTE_ORDER == BIG_ENDIAN 432#define NI_NODEADDR_FLAG_TRUNCATE 0x1 433#define NI_NODEADDR_FLAG_ALL 0x2 434#define NI_NODEADDR_FLAG_COMPAT 0x4 435#define NI_NODEADDR_FLAG_LINKLOCAL 0x8 436#define NI_NODEADDR_FLAG_SITELOCAL 0x10 437#define NI_NODEADDR_FLAG_GLOBAL 0x20 438#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 439#elif BYTE_ORDER == LITTLE_ENDIAN 440#define NI_NODEADDR_FLAG_TRUNCATE 0x0100 441#define NI_NODEADDR_FLAG_ALL 0x0200 442#define NI_NODEADDR_FLAG_COMPAT 0x0400 443#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 444#define NI_NODEADDR_FLAG_SITELOCAL 0x1000 445#define NI_NODEADDR_FLAG_GLOBAL 0x2000 446#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 447#endif 448#endif 449 450struct ni_reply_fqdn { 451 u_int32_t ni_fqdn_ttl; /* TTL */ 452 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 453 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 454} __packed; 455 456/* 457 * Router Renumbering. as router-renum-08.txt 458 */ 459struct icmp6_router_renum { /* router renumbering header */ 460 struct icmp6_hdr rr_hdr; 461 u_int8_t rr_segnum; 462 u_int8_t rr_flags; 463 u_int16_t rr_maxdelay; 464 u_int32_t rr_reserved; 465} __packed; 466 467#define ICMP6_RR_FLAGS_TEST 0x80 468#define ICMP6_RR_FLAGS_REQRESULT 0x40 469#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 470#define ICMP6_RR_FLAGS_SPECSITE 0x10 471#define ICMP6_RR_FLAGS_PREVDONE 0x08 472 473#define rr_type rr_hdr.icmp6_type 474#define rr_code rr_hdr.icmp6_code 475#define rr_cksum rr_hdr.icmp6_cksum 476#define rr_seqnum rr_hdr.icmp6_data32[0] 477 478struct rr_pco_match { /* match prefix part */ 479 u_int8_t rpm_code; 480 u_int8_t rpm_len; 481 u_int8_t rpm_ordinal; 482 u_int8_t rpm_matchlen; 483 u_int8_t rpm_minlen; 484 u_int8_t rpm_maxlen; 485 u_int16_t rpm_reserved; 486 struct in6_addr rpm_prefix; 487} __packed; 488 489#define RPM_PCO_ADD 1 490#define RPM_PCO_CHANGE 2 491#define RPM_PCO_SETGLOBAL 3 492#define RPM_PCO_MAX 4 493 494struct rr_pco_use { /* use prefix part */ 495 u_int8_t rpu_uselen; 496 u_int8_t rpu_keeplen; 497 u_int8_t rpu_ramask; 498 u_int8_t rpu_raflags; 499 u_int32_t rpu_vltime; 500 u_int32_t rpu_pltime; 501 u_int32_t rpu_flags; 502 struct in6_addr rpu_prefix; 503} __packed; 504#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 505#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 506 507#if BYTE_ORDER == BIG_ENDIAN 508#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 509#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 510#elif BYTE_ORDER == LITTLE_ENDIAN 511#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 512#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 513#endif 514 515struct rr_result { /* router renumbering result message */ 516 u_int16_t rrr_flags; 517 u_int8_t rrr_ordinal; 518 u_int8_t rrr_matchedlen; 519 u_int32_t rrr_ifid; 520 struct in6_addr rrr_prefix; 521} __packed; 522#if BYTE_ORDER == BIG_ENDIAN 523#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 524#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 525#elif BYTE_ORDER == LITTLE_ENDIAN 526#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 527#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 528#endif 529 530/* 531 * icmp6 filter structures. 532 */ 533 534struct icmp6_filter { 535 u_int32_t icmp6_filt[8]; 536}; 537 538/* 539 * BEGIN android-changed 540 * Linux and *BSD kernels use opposite values to indicate pass/block in ICMPv6 541 * filters, and assign a different value to the ICMP6_FILTER sockopt. 542 */ 543#define ICMP6_FILTER 1 544 545#define ICMP6_FILTER_SETPASSALL(filterp) \ 546 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 547#define ICMP6_FILTER_SETBLOCKALL(filterp) \ 548 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 549#define ICMP6_FILTER_SETPASS(type, filterp) \ 550 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 551#define ICMP6_FILTER_SETBLOCK(type, filterp) \ 552 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 553#define ICMP6_FILTER_WILLPASS(type, filterp) \ 554 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 555#define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 556 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 557/* 558 * END android-changed 559 */ 560 561/* 562 * Variables related to this implementation 563 * of the internet control message protocol version 6. 564 */ 565 566/* 567 * IPv6 ICMP statistics. 568 * Each counter is an unsigned 64-bit value. 569 */ 570#define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 571#define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 572#define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 573#define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 574 /* space for 256 counters */ 575#define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 576#define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 577#define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 578#define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 579 /* 580 * number of responses; this member is inherited from the netinet code, 581 * but for netinet6 code, it is already available in outhist[]. 582 */ 583#define ICMP6_STAT_REFLECT 263 584#define ICMP6_STAT_INHIST 264 /* # of input messages */ 585 /* space for 256 counters */ 586#define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 587#define ICMP6_STAT_OUTERRHIST 521 588 /* space for 13 counters */ 589#define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 590#define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 591#define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 592#define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 593#define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 594#define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 595#define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 596#define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 597 598#define ICMP6_NSTATS 542 599 600#define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 601#define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 602#define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 603#define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 604#define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 605#define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 606#define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 607#define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 608#define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 609#define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 610#define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 611#define ICMP6_ERRSTAT_REDIRECT 11 612#define ICMP6_ERRSTAT_UNKNOWN 12 613 614/* 615 * Names for ICMP sysctl objects 616 */ 617#define ICMPV6CTL_STATS 1 618#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 619#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 620#if 0 /*obsoleted*/ 621#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 622#endif 623#define ICMPV6CTL_ND6_PRUNE 6 624#define ICMPV6CTL_ND6_DELAY 8 625#define ICMPV6CTL_ND6_UMAXTRIES 9 626#define ICMPV6CTL_ND6_MMAXTRIES 10 627#define ICMPV6CTL_ND6_USELOOPBACK 11 628/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 629#define ICMPV6CTL_NODEINFO 13 630#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 631#define ICMPV6CTL_ND6_MAXNUDHINT 15 632#define ICMPV6CTL_MTUDISC_HIWAT 16 633#define ICMPV6CTL_MTUDISC_LOWAT 17 634#define ICMPV6CTL_ND6_DEBUG 18 635#define ICMPV6CTL_ND6_DRLIST 19 636#define ICMPV6CTL_ND6_PRLIST 20 637#define ICMPV6CTL_ND6_MAXQLEN 24 638#define ICMPV6CTL_MAXID 25 639 640#define ICMPV6CTL_NAMES { \ 641 { 0, 0 }, \ 642 { 0, 0 }, \ 643 { "rediraccept", CTLTYPE_INT }, \ 644 { "redirtimeout", CTLTYPE_INT }, \ 645 { 0, 0 }, \ 646 { 0, 0 }, \ 647 { "nd6_prune", CTLTYPE_INT }, \ 648 { 0, 0 }, \ 649 { "nd6_delay", CTLTYPE_INT }, \ 650 { "nd6_umaxtries", CTLTYPE_INT }, \ 651 { "nd6_mmaxtries", CTLTYPE_INT }, \ 652 { "nd6_useloopback", CTLTYPE_INT }, \ 653 { 0, 0 }, \ 654 { "nodeinfo", CTLTYPE_INT }, \ 655 { "errppslimit", CTLTYPE_INT }, \ 656 { "nd6_maxnudhint", CTLTYPE_INT }, \ 657 { "mtudisc_hiwat", CTLTYPE_INT }, \ 658 { "mtudisc_lowat", CTLTYPE_INT }, \ 659 { "nd6_debug", CTLTYPE_INT }, \ 660 { 0, 0 }, \ 661 { 0, 0 }, \ 662 { 0, 0 }, \ 663 { 0, 0 }, \ 664 { 0, 0 }, \ 665 { "nd6_maxqueuelen", CTLTYPE_INT }, \ 666} 667 668#ifdef _KERNEL 669struct rtentry; 670struct rttimer; 671struct in6_multi; 672 673void icmp6_init(void); 674void icmp6_paramerror(struct mbuf *, int); 675void icmp6_error(struct mbuf *, int, int, int); 676void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 677int icmp6_input(struct mbuf **, int *, int); 678void icmp6_fasttimo(void); 679void icmp6_reflect(struct mbuf *, size_t); 680void icmp6_prepare(struct mbuf *); 681void icmp6_redirect_input(struct mbuf *, int); 682void icmp6_redirect_output(struct mbuf *, struct rtentry *); 683int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 684 685void icmp6_statinc(u_int); 686 687struct ip6ctlparam; 688void icmp6_mtudisc_update(struct ip6ctlparam *, int); 689void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 690 691/* XXX: is this the right place for these macros? */ 692#define icmp6_ifstat_inc(ifp, tag) \ 693do { \ 694 if (ifp) \ 695 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 696} while (/*CONSTCOND*/ 0) 697 698#define icmp6_ifoutstat_inc(ifp, type, code) \ 699do { \ 700 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 701 switch(type) { \ 702 case ICMP6_DST_UNREACH: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 704 if (code == ICMP6_DST_UNREACH_ADMIN) \ 705 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 706 break; \ 707 case ICMP6_PACKET_TOO_BIG: \ 708 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 709 break; \ 710 case ICMP6_TIME_EXCEEDED: \ 711 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 712 break; \ 713 case ICMP6_PARAM_PROB: \ 714 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 715 break; \ 716 case ICMP6_ECHO_REQUEST: \ 717 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 718 break; \ 719 case ICMP6_ECHO_REPLY: \ 720 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 721 break; \ 722 case MLD_LISTENER_QUERY: \ 723 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 724 break; \ 725 case MLD_LISTENER_REPORT: \ 726 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 727 break; \ 728 case MLD_LISTENER_DONE: \ 729 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 730 break; \ 731 case ND_ROUTER_SOLICIT: \ 732 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 733 break; \ 734 case ND_ROUTER_ADVERT: \ 735 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 736 break; \ 737 case ND_NEIGHBOR_SOLICIT: \ 738 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 739 break; \ 740 case ND_NEIGHBOR_ADVERT: \ 741 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 742 break; \ 743 case ND_REDIRECT: \ 744 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 745 break; \ 746 } \ 747} while (/*CONSTCOND*/ 0) 748 749extern int icmp6_rediraccept; /* accept/process redirects */ 750extern int icmp6_redirtimeout; /* cache time for redirect routes */ 751#endif /* _KERNEL */ 752 753#ifdef ICMP6_STRINGS 754/* Info: http://www.iana.org/assignments/icmpv6-parameters */ 755 756static const char * const icmp6_type_err[] = { 757 "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob", 758 NULL 759}; 760 761static const char * const icmp6_type_info[] = { 762 "echo", "echoreply", 763 "mcastlistenq", "mcastlistenrep", "mcastlistendone", 764 "rtsol", "rtadv", "neighsol", "neighadv", "redirect", 765 "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep", 766 "mcastlistenrep2", "haad_req", "haad_rep", 767 "mobile_psol", "mobile_padv", "cga_sol", "cga_adv", 768 "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm", 769 "fmipv6_msg", "rpl_control", NULL 770}; 771 772static const char * const icmp6_code_none[] = { "none", NULL }; 773 774static const char * const icmp6_code_unreach[] = { 775 "noroute", "admin", "beyondscope", "addr", "port", 776 "srcaddr_policy", "reject_route", "source_route_err", NULL 777}; 778 779static const char * const icmp6_code_timxceed[] = { 780 "intrans", "reass", NULL 781}; 782 783static const char * const icmp6_code_paramprob[] = { 784 "hdr_field", "nxthdr_type", "option", NULL 785}; 786 787/* not all informational icmps that have codes have a names array */ 788#endif 789 790#endif /* !_NETINET_ICMP6_H_ */ 791