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 73 struct 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 */ 183 struct 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 */ 211 212 struct 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] 221 222 struct 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] 249 250 struct 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] 260 261 struct 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 282 283 struct 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] 294 295 struct 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 */ 314 315 struct 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 }; 323 324 struct 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 337 338 struct 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; 345 346 struct 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; 352 353 struct 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; 360 361 struct 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 */ 372 373 struct 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 */ 387 struct 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 /* 394 * BEGIN android-removed: glibc doesn't have these, and external/ping declares them itself. 395 #define ni_type icmp6_ni_hdr.icmp6_type 396 #define ni_code icmp6_ni_hdr.icmp6_code 397 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 398 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 399 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 400 * END android-removed 401 */ 402 403 #define NI_QTYPE_NOOP 0 /* NOOP */ 404 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 405 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 406 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 407 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 408 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 409 410 #if BYTE_ORDER == BIG_ENDIAN 411 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 412 #define NI_FQDN_FLAG_VALIDTTL 0x1 413 #elif BYTE_ORDER == LITTLE_ENDIAN 414 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 415 #define NI_FQDN_FLAG_VALIDTTL 0x0100 416 #endif 417 418 #ifdef NAME_LOOKUPS_04 419 #if BYTE_ORDER == BIG_ENDIAN 420 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 421 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 422 #define NI_NODEADDR_FLAG_GLOBAL 0x4 423 #define NI_NODEADDR_FLAG_ALL 0x8 424 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 425 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 426 #elif BYTE_ORDER == LITTLE_ENDIAN 427 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 428 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 429 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 430 #define NI_NODEADDR_FLAG_ALL 0x0800 431 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 432 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 433 #endif 434 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 435 #if BYTE_ORDER == BIG_ENDIAN 436 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 437 #define NI_NODEADDR_FLAG_ALL 0x2 438 #define NI_NODEADDR_FLAG_COMPAT 0x4 439 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 440 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 441 #define NI_NODEADDR_FLAG_GLOBAL 0x20 442 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 443 #elif BYTE_ORDER == LITTLE_ENDIAN 444 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 445 #define NI_NODEADDR_FLAG_ALL 0x0200 446 #define NI_NODEADDR_FLAG_COMPAT 0x0400 447 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 448 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 449 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 450 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 451 #endif 452 #endif 453 454 struct ni_reply_fqdn { 455 u_int32_t ni_fqdn_ttl; /* TTL */ 456 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 457 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 458 } __packed; 459 460 /* 461 * Router Renumbering. as router-renum-08.txt 462 */ 463 struct icmp6_router_renum { /* router renumbering header */ 464 struct icmp6_hdr rr_hdr; 465 u_int8_t rr_segnum; 466 u_int8_t rr_flags; 467 u_int16_t rr_maxdelay; 468 u_int32_t rr_reserved; 469 } __packed; 470 471 #define ICMP6_RR_FLAGS_TEST 0x80 472 #define ICMP6_RR_FLAGS_REQRESULT 0x40 473 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 474 #define ICMP6_RR_FLAGS_SPECSITE 0x10 475 #define ICMP6_RR_FLAGS_PREVDONE 0x08 476 477 #define rr_type rr_hdr.icmp6_type 478 #define rr_code rr_hdr.icmp6_code 479 #define rr_cksum rr_hdr.icmp6_cksum 480 #define rr_seqnum rr_hdr.icmp6_data32[0] 481 482 struct rr_pco_match { /* match prefix part */ 483 u_int8_t rpm_code; 484 u_int8_t rpm_len; 485 u_int8_t rpm_ordinal; 486 u_int8_t rpm_matchlen; 487 u_int8_t rpm_minlen; 488 u_int8_t rpm_maxlen; 489 u_int16_t rpm_reserved; 490 struct in6_addr rpm_prefix; 491 } __packed; 492 493 #define RPM_PCO_ADD 1 494 #define RPM_PCO_CHANGE 2 495 #define RPM_PCO_SETGLOBAL 3 496 #define RPM_PCO_MAX 4 497 498 struct rr_pco_use { /* use prefix part */ 499 u_int8_t rpu_uselen; 500 u_int8_t rpu_keeplen; 501 u_int8_t rpu_ramask; 502 u_int8_t rpu_raflags; 503 u_int32_t rpu_vltime; 504 u_int32_t rpu_pltime; 505 u_int32_t rpu_flags; 506 struct in6_addr rpu_prefix; 507 } __packed; 508 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 509 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 510 511 #if BYTE_ORDER == BIG_ENDIAN 512 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 513 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 514 #elif BYTE_ORDER == LITTLE_ENDIAN 515 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 516 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 517 #endif 518 519 struct rr_result { /* router renumbering result message */ 520 u_int16_t rrr_flags; 521 u_int8_t rrr_ordinal; 522 u_int8_t rrr_matchedlen; 523 u_int32_t rrr_ifid; 524 struct in6_addr rrr_prefix; 525 } __packed; 526 #if BYTE_ORDER == BIG_ENDIAN 527 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 528 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 529 #elif BYTE_ORDER == LITTLE_ENDIAN 530 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 531 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 532 #endif 533 534 /* 535 * icmp6 filter structures. 536 */ 537 538 struct icmp6_filter { 539 u_int32_t icmp6_filt[8]; 540 }; 541 542 /* 543 * BEGIN android-changed 544 * Linux and *BSD kernels use opposite values to indicate pass/block in ICMPv6 545 * filters, and assign a different value to the ICMP6_FILTER sockopt. 546 */ 547 #define ICMP6_FILTER 1 548 549 #define ICMP6_FILTER_SETPASSALL(filterp) \ 550 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) 551 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 552 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) 553 #define ICMP6_FILTER_SETPASS(type, filterp) \ 554 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 555 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 556 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 557 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 558 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 559 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 560 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 561 /* 562 * END android-changed 563 */ 564 565 /* 566 * Variables related to this implementation 567 * of the internet control message protocol version 6. 568 */ 569 570 /* 571 * IPv6 ICMP statistics. 572 * Each counter is an unsigned 64-bit value. 573 */ 574 #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ 575 #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ 576 #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ 577 #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ 578 /* space for 256 counters */ 579 #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ 580 #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ 581 #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ 582 #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ 583 /* 584 * number of responses; this member is inherited from the netinet code, 585 * but for netinet6 code, it is already available in outhist[]. 586 */ 587 #define ICMP6_STAT_REFLECT 263 588 #define ICMP6_STAT_INHIST 264 /* # of input messages */ 589 /* space for 256 counters */ 590 #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ 591 #define ICMP6_STAT_OUTERRHIST 521 592 /* space for 13 counters */ 593 #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ 594 #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ 595 #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ 596 #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ 597 #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ 598 #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ 599 #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ 600 #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ 601 602 #define ICMP6_NSTATS 542 603 604 #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 605 #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 606 #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 607 #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 608 #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 609 #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 610 #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 611 #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 612 #define ICMP6_ERRSTAT_PARAMPROB_HEADER 8 613 #define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9 614 #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 615 #define ICMP6_ERRSTAT_REDIRECT 11 616 #define ICMP6_ERRSTAT_UNKNOWN 12 617 618 /* 619 * Names for ICMP sysctl objects 620 */ 621 #define ICMPV6CTL_STATS 1 622 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 623 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 624 #if 0 /*obsoleted*/ 625 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 626 #endif 627 #define ICMPV6CTL_ND6_PRUNE 6 628 #define ICMPV6CTL_ND6_DELAY 8 629 #define ICMPV6CTL_ND6_UMAXTRIES 9 630 #define ICMPV6CTL_ND6_MMAXTRIES 10 631 #define ICMPV6CTL_ND6_USELOOPBACK 11 632 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 633 #define ICMPV6CTL_NODEINFO 13 634 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 635 #define ICMPV6CTL_ND6_MAXNUDHINT 15 636 #define ICMPV6CTL_MTUDISC_HIWAT 16 637 #define ICMPV6CTL_MTUDISC_LOWAT 17 638 #define ICMPV6CTL_ND6_DEBUG 18 639 #define ICMPV6CTL_ND6_DRLIST 19 640 #define ICMPV6CTL_ND6_PRLIST 20 641 #define ICMPV6CTL_ND6_MAXQLEN 24 642 #define ICMPV6CTL_MAXID 25 643 644 #define ICMPV6CTL_NAMES { \ 645 { 0, 0 }, \ 646 { 0, 0 }, \ 647 { "rediraccept", CTLTYPE_INT }, \ 648 { "redirtimeout", CTLTYPE_INT }, \ 649 { 0, 0 }, \ 650 { 0, 0 }, \ 651 { "nd6_prune", CTLTYPE_INT }, \ 652 { 0, 0 }, \ 653 { "nd6_delay", CTLTYPE_INT }, \ 654 { "nd6_umaxtries", CTLTYPE_INT }, \ 655 { "nd6_mmaxtries", CTLTYPE_INT }, \ 656 { "nd6_useloopback", CTLTYPE_INT }, \ 657 { 0, 0 }, \ 658 { "nodeinfo", CTLTYPE_INT }, \ 659 { "errppslimit", CTLTYPE_INT }, \ 660 { "nd6_maxnudhint", CTLTYPE_INT }, \ 661 { "mtudisc_hiwat", CTLTYPE_INT }, \ 662 { "mtudisc_lowat", CTLTYPE_INT }, \ 663 { "nd6_debug", CTLTYPE_INT }, \ 664 { 0, 0 }, \ 665 { 0, 0 }, \ 666 { 0, 0 }, \ 667 { 0, 0 }, \ 668 { 0, 0 }, \ 669 { "nd6_maxqueuelen", CTLTYPE_INT }, \ 670 } 671 672 #ifdef _KERNEL 673 struct rtentry; 674 struct rttimer; 675 struct in6_multi; 676 677 void icmp6_init(void); 678 void icmp6_paramerror(struct mbuf *, int); 679 void icmp6_error(struct mbuf *, int, int, int); 680 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 681 int icmp6_input(struct mbuf **, int *, int); 682 void icmp6_fasttimo(void); 683 void icmp6_reflect(struct mbuf *, size_t); 684 void icmp6_prepare(struct mbuf *); 685 void icmp6_redirect_input(struct mbuf *, int); 686 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 687 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 688 689 void icmp6_statinc(u_int); 690 691 struct ip6ctlparam; 692 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 693 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); 694 695 /* XXX: is this the right place for these macros? */ 696 #define icmp6_ifstat_inc(ifp, tag) \ 697 do { \ 698 if (ifp) \ 699 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 700 } while (/*CONSTCOND*/ 0) 701 702 #define icmp6_ifoutstat_inc(ifp, type, code) \ 703 do { \ 704 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 705 switch(type) { \ 706 case ICMP6_DST_UNREACH: \ 707 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 708 if (code == ICMP6_DST_UNREACH_ADMIN) \ 709 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 710 break; \ 711 case ICMP6_PACKET_TOO_BIG: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 713 break; \ 714 case ICMP6_TIME_EXCEEDED: \ 715 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 716 break; \ 717 case ICMP6_PARAM_PROB: \ 718 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 719 break; \ 720 case ICMP6_ECHO_REQUEST: \ 721 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 722 break; \ 723 case ICMP6_ECHO_REPLY: \ 724 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 725 break; \ 726 case MLD_LISTENER_QUERY: \ 727 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 728 break; \ 729 case MLD_LISTENER_REPORT: \ 730 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 731 break; \ 732 case MLD_LISTENER_DONE: \ 733 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 734 break; \ 735 case ND_ROUTER_SOLICIT: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 737 break; \ 738 case ND_ROUTER_ADVERT: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 740 break; \ 741 case ND_NEIGHBOR_SOLICIT: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 743 break; \ 744 case ND_NEIGHBOR_ADVERT: \ 745 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 746 break; \ 747 case ND_REDIRECT: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 749 break; \ 750 } \ 751 } while (/*CONSTCOND*/ 0) 752 753 extern int icmp6_rediraccept; /* accept/process redirects */ 754 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 755 #endif /* _KERNEL */ 756 757 #ifdef ICMP6_STRINGS 758 /* Info: http://www.iana.org/assignments/icmpv6-parameters */ 759 760 static const char * const icmp6_type_err[] = { 761 "reserved0", "unreach", "packet_too_big", "timxceed", "paramprob", 762 NULL 763 }; 764 765 static const char * const icmp6_type_info[] = { 766 "echo", "echoreply", 767 "mcastlistenq", "mcastlistenrep", "mcastlistendone", 768 "rtsol", "rtadv", "neighsol", "neighadv", "redirect", 769 "routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep", 770 "mcastlistenrep2", "haad_req", "haad_rep", 771 "mobile_psol", "mobile_padv", "cga_sol", "cga_adv", 772 "experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm", 773 "fmipv6_msg", "rpl_control", NULL 774 }; 775 776 static const char * const icmp6_code_none[] = { "none", NULL }; 777 778 static const char * const icmp6_code_unreach[] = { 779 "noroute", "admin", "beyondscope", "addr", "port", 780 "srcaddr_policy", "reject_route", "source_route_err", NULL 781 }; 782 783 static const char * const icmp6_code_timxceed[] = { 784 "intrans", "reass", NULL 785 }; 786 787 static const char * const icmp6_code_paramprob[] = { 788 "hdr_field", "nxthdr_type", "option", NULL 789 }; 790 791 /* not all informational icmps that have codes have a names array */ 792 #endif 793 794 #endif /* !_NETINET_ICMP6_H_ */ 795
