1 /* $FreeBSD$ */ 2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 3 4 /*- 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /*- 34 * Copyright (c) 1982, 1986, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 62 */ 63 64 #ifndef _NETINET_ICMP6_H_ 65 #define _NETINET_ICMP6_H_ 66 67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 68 - sizeof(struct icmp6_hdr) */ 69 70 struct icmp6_hdr { 71 u_int8_t icmp6_type; /* type field */ 72 u_int8_t icmp6_code; /* code field */ 73 u_int16_t icmp6_cksum; /* checksum field */ 74 union { 75 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 76 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 77 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 78 } icmp6_dataun; 79 } __packed; 80 81 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 82 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 83 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 84 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 85 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 86 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 87 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 88 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 89 90 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 91 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 92 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 93 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 94 95 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 96 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 97 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 98 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 99 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 100 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 101 102 /* RFC2292 decls */ 103 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 104 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 106 107 #ifndef _KERNEL 108 /* the followings are for backward compatibility to old KAME apps. */ 109 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 110 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 111 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 112 #endif 113 114 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 115 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 116 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 117 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 118 #define ND_REDIRECT 137 /* redirect */ 119 120 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 121 122 #define ICMP6_WRUREQUEST 139 /* who are you request */ 123 #define ICMP6_WRUREPLY 140 /* who are you reply */ 124 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 125 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 126 #define ICMP6_NI_QUERY 139 /* node information request */ 127 #define ICMP6_NI_REPLY 140 /* node information reply */ 128 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 129 130 /* The definitions below are experimental. TBA */ 131 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 132 #define MLD_MTRACE 201 /* mtrace messages */ 133 134 #ifndef _KERNEL 135 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 136 #define MLD6_MTRACE MLD_MTRACE 137 #endif 138 139 #define ICMP6_MAXTYPE 201 140 141 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 142 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 143 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 144 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 145 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 146 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 147 148 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 149 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 150 151 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 152 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 153 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 154 155 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 156 157 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 158 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 159 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 160 161 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 162 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 163 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 164 165 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 166 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 167 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 168 169 /* Used in kernel only */ 170 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 171 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 172 173 /* 174 * Multicast Listener Discovery 175 */ 176 struct mld_hdr { 177 struct icmp6_hdr mld_icmp6_hdr; 178 struct in6_addr mld_addr; /* multicast address */ 179 } __packed; 180 181 /* definitions to provide backward compatibility to old KAME applications */ 182 #ifndef _KERNEL 183 #define mld6_hdr mld_hdr 184 #define mld6_type mld_type 185 #define mld6_code mld_code 186 #define mld6_cksum mld_cksum 187 #define mld6_maxdelay mld_maxdelay 188 #define mld6_reserved mld_reserved 189 #define mld6_addr mld_addr 190 #endif 191 192 /* shortcut macro definitions */ 193 #define mld_type mld_icmp6_hdr.icmp6_type 194 #define mld_code mld_icmp6_hdr.icmp6_code 195 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 196 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 197 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 198 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 199 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 200 201 /* 202 * Neighbor Discovery 203 */ 204 205 struct nd_router_solicit { /* router solicitation */ 206 struct icmp6_hdr nd_rs_hdr; 207 /* could be followed by options */ 208 } __packed; 209 210 #define nd_rs_type nd_rs_hdr.icmp6_type 211 #define nd_rs_code nd_rs_hdr.icmp6_code 212 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 213 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 214 215 struct nd_router_advert { /* router advertisement */ 216 struct icmp6_hdr nd_ra_hdr; 217 u_int32_t nd_ra_reachable; /* reachable time */ 218 u_int32_t nd_ra_retransmit; /* retransmit timer */ 219 /* could be followed by options */ 220 } __packed; 221 222 #define nd_ra_type nd_ra_hdr.icmp6_type 223 #define nd_ra_code nd_ra_hdr.icmp6_code 224 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 225 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 226 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 227 #define ND_RA_FLAG_MANAGED 0x80 228 #define ND_RA_FLAG_OTHER 0x40 229 #define ND_RA_FLAG_HA 0x20 230 231 /* 232 * Router preference values based on draft-draves-ipngwg-router-selection-01. 233 * These are non-standard definitions. 234 */ 235 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 236 237 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 238 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 239 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 240 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 241 242 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 243 244 struct nd_neighbor_solicit { /* neighbor solicitation */ 245 struct icmp6_hdr nd_ns_hdr; 246 struct in6_addr nd_ns_target; /*target address */ 247 /* could be followed by options */ 248 } __packed; 249 250 #define nd_ns_type nd_ns_hdr.icmp6_type 251 #define nd_ns_code nd_ns_hdr.icmp6_code 252 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 253 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 254 255 struct nd_neighbor_advert { /* neighbor advertisement */ 256 struct icmp6_hdr nd_na_hdr; 257 struct in6_addr nd_na_target; /* target address */ 258 /* could be followed by options */ 259 } __packed; 260 261 #define nd_na_type nd_na_hdr.icmp6_type 262 #define nd_na_code nd_na_hdr.icmp6_code 263 #define nd_na_cksum nd_na_hdr.icmp6_cksum 264 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 265 #if BYTE_ORDER == BIG_ENDIAN 266 #define ND_NA_FLAG_ROUTER 0x80000000 267 #define ND_NA_FLAG_SOLICITED 0x40000000 268 #define ND_NA_FLAG_OVERRIDE 0x20000000 269 #else 270 #if BYTE_ORDER == LITTLE_ENDIAN 271 #define ND_NA_FLAG_ROUTER 0x80 272 #define ND_NA_FLAG_SOLICITED 0x40 273 #define ND_NA_FLAG_OVERRIDE 0x20 274 #endif 275 #endif 276 277 struct nd_redirect { /* redirect */ 278 struct icmp6_hdr nd_rd_hdr; 279 struct in6_addr nd_rd_target; /* target address */ 280 struct in6_addr nd_rd_dst; /* destination address */ 281 /* could be followed by options */ 282 } __packed; 283 284 #define nd_rd_type nd_rd_hdr.icmp6_type 285 #define nd_rd_code nd_rd_hdr.icmp6_code 286 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 287 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 288 289 struct nd_opt_hdr { /* Neighbor discovery option header */ 290 u_int8_t nd_opt_type; 291 u_int8_t nd_opt_len; 292 /* followed by option specific data*/ 293 } __packed; 294 295 #define ND_OPT_SOURCE_LINKADDR 1 296 #define ND_OPT_TARGET_LINKADDR 2 297 #define ND_OPT_PREFIX_INFORMATION 3 298 #define ND_OPT_REDIRECTED_HEADER 4 299 #define ND_OPT_MTU 5 300 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 301 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 302 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 303 304 struct nd_opt_prefix_info { /* prefix information */ 305 u_int8_t nd_opt_pi_type; 306 u_int8_t nd_opt_pi_len; 307 u_int8_t nd_opt_pi_prefix_len; 308 u_int8_t nd_opt_pi_flags_reserved; 309 u_int32_t nd_opt_pi_valid_time; 310 u_int32_t nd_opt_pi_preferred_time; 311 u_int32_t nd_opt_pi_reserved2; 312 struct in6_addr nd_opt_pi_prefix; 313 } __packed; 314 315 #define ND_OPT_PI_FLAG_ONLINK 0x80 316 #define ND_OPT_PI_FLAG_AUTO 0x40 317 318 struct nd_opt_rd_hdr { /* redirected header */ 319 u_int8_t nd_opt_rh_type; 320 u_int8_t nd_opt_rh_len; 321 u_int16_t nd_opt_rh_reserved1; 322 u_int32_t nd_opt_rh_reserved2; 323 /* followed by IP header and data */ 324 } __packed; 325 326 struct nd_opt_mtu { /* MTU option */ 327 u_int8_t nd_opt_mtu_type; 328 u_int8_t nd_opt_mtu_len; 329 u_int16_t nd_opt_mtu_reserved; 330 u_int32_t nd_opt_mtu_mtu; 331 } __packed; 332 333 struct nd_opt_route_info { /* route info */ 334 u_int8_t nd_opt_rti_type; 335 u_int8_t nd_opt_rti_len; 336 u_int8_t nd_opt_rti_prefixlen; 337 u_int8_t nd_opt_rti_flags; 338 u_int32_t nd_opt_rti_lifetime; 339 /* prefix follows */ 340 } __packed; 341 342 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 343 u_int8_t nd_opt_rdnss_type; 344 u_int8_t nd_opt_rdnss_len; 345 u_int16_t nd_opt_rdnss_reserved; 346 u_int32_t nd_opt_rdnss_lifetime; 347 /* followed by list of recursive DNS servers */ 348 } __packed; 349 350 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 351 u_int8_t nd_opt_dnssl_type; 352 u_int8_t nd_opt_dnssl_len; 353 u_int16_t nd_opt_dnssl_reserved; 354 u_int32_t nd_opt_dnssl_lifetime; 355 /* followed by list of DNS search domains */ 356 } __packed; 357 358 /* 359 * icmp6 namelookup 360 */ 361 362 struct icmp6_namelookup { 363 struct icmp6_hdr icmp6_nl_hdr; 364 u_int8_t icmp6_nl_nonce[8]; 365 int32_t icmp6_nl_ttl; 366 #if 0 367 u_int8_t icmp6_nl_len; 368 u_int8_t icmp6_nl_name[3]; 369 #endif 370 /* could be followed by options */ 371 } __packed; 372 373 /* 374 * icmp6 node information 375 */ 376 struct icmp6_nodeinfo { 377 struct icmp6_hdr icmp6_ni_hdr; 378 u_int8_t icmp6_ni_nonce[8]; 379 /* could be followed by reply data */ 380 } __packed; 381 382 #define ni_type icmp6_ni_hdr.icmp6_type 383 #define ni_code icmp6_ni_hdr.icmp6_code 384 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 385 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 386 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 387 388 #define NI_QTYPE_NOOP 0 /* NOOP */ 389 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 390 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 391 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 392 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 393 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 394 395 #if BYTE_ORDER == BIG_ENDIAN 396 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 397 #define NI_FQDN_FLAG_VALIDTTL 0x1 398 #elif BYTE_ORDER == LITTLE_ENDIAN 399 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 400 #define NI_FQDN_FLAG_VALIDTTL 0x0100 401 #endif 402 403 #ifdef NAME_LOOKUPS_04 404 #if BYTE_ORDER == BIG_ENDIAN 405 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 406 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 407 #define NI_NODEADDR_FLAG_GLOBAL 0x4 408 #define NI_NODEADDR_FLAG_ALL 0x8 409 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 410 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 411 #elif BYTE_ORDER == LITTLE_ENDIAN 412 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 413 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 414 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 415 #define NI_NODEADDR_FLAG_ALL 0x0800 416 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 417 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 418 #endif 419 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 420 #if BYTE_ORDER == BIG_ENDIAN 421 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 422 #define NI_NODEADDR_FLAG_ALL 0x2 423 #define NI_NODEADDR_FLAG_COMPAT 0x4 424 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 425 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 426 #define NI_NODEADDR_FLAG_GLOBAL 0x20 427 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 428 #elif BYTE_ORDER == LITTLE_ENDIAN 429 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 430 #define NI_NODEADDR_FLAG_ALL 0x0200 431 #define NI_NODEADDR_FLAG_COMPAT 0x0400 432 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 433 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 434 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 435 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 436 #endif 437 #endif 438 439 struct ni_reply_fqdn { 440 u_int32_t ni_fqdn_ttl; /* TTL */ 441 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 442 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 443 } __packed; 444 445 /* 446 * Router Renumbering. as router-renum-08.txt 447 */ 448 struct icmp6_router_renum { /* router renumbering header */ 449 struct icmp6_hdr rr_hdr; 450 u_int8_t rr_segnum; 451 u_int8_t rr_flags; 452 u_int16_t rr_maxdelay; 453 u_int32_t rr_reserved; 454 } __packed; 455 456 #define ICMP6_RR_FLAGS_TEST 0x80 457 #define ICMP6_RR_FLAGS_REQRESULT 0x40 458 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 459 #define ICMP6_RR_FLAGS_SPECSITE 0x10 460 #define ICMP6_RR_FLAGS_PREVDONE 0x08 461 462 #define rr_type rr_hdr.icmp6_type 463 #define rr_code rr_hdr.icmp6_code 464 #define rr_cksum rr_hdr.icmp6_cksum 465 #define rr_seqnum rr_hdr.icmp6_data32[0] 466 467 struct rr_pco_match { /* match prefix part */ 468 u_int8_t rpm_code; 469 u_int8_t rpm_len; 470 u_int8_t rpm_ordinal; 471 u_int8_t rpm_matchlen; 472 u_int8_t rpm_minlen; 473 u_int8_t rpm_maxlen; 474 u_int16_t rpm_reserved; 475 struct in6_addr rpm_prefix; 476 } __packed; 477 478 #define RPM_PCO_ADD 1 479 #define RPM_PCO_CHANGE 2 480 #define RPM_PCO_SETGLOBAL 3 481 #define RPM_PCO_MAX 4 482 483 struct rr_pco_use { /* use prefix part */ 484 u_int8_t rpu_uselen; 485 u_int8_t rpu_keeplen; 486 u_int8_t rpu_ramask; 487 u_int8_t rpu_raflags; 488 u_int32_t rpu_vltime; 489 u_int32_t rpu_pltime; 490 u_int32_t rpu_flags; 491 struct in6_addr rpu_prefix; 492 } __packed; 493 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 494 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 495 496 #if BYTE_ORDER == BIG_ENDIAN 497 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 498 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 499 #elif BYTE_ORDER == LITTLE_ENDIAN 500 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 501 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 502 #endif 503 504 struct rr_result { /* router renumbering result message */ 505 u_int16_t rrr_flags; 506 u_int8_t rrr_ordinal; 507 u_int8_t rrr_matchedlen; 508 u_int32_t rrr_ifid; 509 struct in6_addr rrr_prefix; 510 } __packed; 511 #if BYTE_ORDER == BIG_ENDIAN 512 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 513 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 514 #elif BYTE_ORDER == LITTLE_ENDIAN 515 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 516 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 517 #endif 518 519 /* 520 * icmp6 filter structures. 521 */ 522 523 struct icmp6_filter { 524 u_int32_t icmp6_filt[8]; 525 }; 526 527 #ifdef _KERNEL 528 #define ICMP6_FILTER_SETPASSALL(filterp) \ 529 do { \ 530 int i; u_char *p; \ 531 p = (u_char *)filterp; \ 532 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 533 p[i] = 0xff; \ 534 } while (/*CONSTCOND*/ 0) 535 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 536 bzero(filterp, sizeof(struct icmp6_filter)) 537 #else /* _KERNEL */ 538 #define ICMP6_FILTER_SETPASSALL(filterp) \ 539 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 540 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 541 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 542 #endif /* _KERNEL */ 543 544 #define ICMP6_FILTER_SETPASS(type, filterp) \ 545 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 546 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 547 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 548 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 549 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 550 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 551 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 552 553 /* 554 * Variables related to this implementation 555 * of the internet control message protocol version 6. 556 */ 557 struct icmp6errstat { 558 uint64_t icp6errs_dst_unreach_noroute; 559 uint64_t icp6errs_dst_unreach_admin; 560 uint64_t icp6errs_dst_unreach_beyondscope; 561 uint64_t icp6errs_dst_unreach_addr; 562 uint64_t icp6errs_dst_unreach_noport; 563 uint64_t icp6errs_packet_too_big; 564 uint64_t icp6errs_time_exceed_transit; 565 uint64_t icp6errs_time_exceed_reassembly; 566 uint64_t icp6errs_paramprob_header; 567 uint64_t icp6errs_paramprob_nextheader; 568 uint64_t icp6errs_paramprob_option; 569 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 570 uint64_t icp6errs_unknown; 571 }; 572 573 struct icmp6stat { 574 /* statistics related to icmp6 packets generated */ 575 uint64_t icp6s_error; /* # of calls to icmp6_error */ 576 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 577 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 578 uint64_t icp6s_outhist[256]; 579 /* statistics related to input message processed */ 580 uint64_t icp6s_badcode; /* icmp6_code out of range */ 581 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 582 uint64_t icp6s_checksum; /* bad checksum */ 583 uint64_t icp6s_badlen; /* calculated bound mismatch */ 584 /* 585 * number of responses: this member is inherited from netinet code, but 586 * for netinet6 code, it is already available in icp6s_outhist[]. 587 */ 588 uint64_t icp6s_reflect; 589 uint64_t icp6s_inhist[256]; 590 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 591 struct icmp6errstat icp6s_outerrhist; 592 #define icp6s_odst_unreach_noroute \ 593 icp6s_outerrhist.icp6errs_dst_unreach_noroute 594 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 595 #define icp6s_odst_unreach_beyondscope \ 596 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 597 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 598 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 599 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 600 #define icp6s_otime_exceed_transit \ 601 icp6s_outerrhist.icp6errs_time_exceed_transit 602 #define icp6s_otime_exceed_reassembly \ 603 icp6s_outerrhist.icp6errs_time_exceed_reassembly 604 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 605 #define icp6s_oparamprob_nextheader \ 606 icp6s_outerrhist.icp6errs_paramprob_nextheader 607 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 608 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 609 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 610 uint64_t icp6s_pmtuchg; /* path MTU changes */ 611 uint64_t icp6s_nd_badopt; /* bad ND options */ 612 uint64_t icp6s_badns; /* bad neighbor solicitation */ 613 uint64_t icp6s_badna; /* bad neighbor advertisement */ 614 uint64_t icp6s_badrs; /* bad router advertisement */ 615 uint64_t icp6s_badra; /* bad router advertisement */ 616 uint64_t icp6s_badredirect; /* bad redirect message */ 617 }; 618 619 #ifdef _KERNEL 620 #include <sys/counter.h> 621 622 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 623 /* 624 * In-kernel consumers can use these accessor macros directly to update 625 * stats. 626 */ 627 #define ICMP6STAT_ADD(name, val) \ 628 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 629 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 630 631 /* 632 * Kernel module consumers must use this accessor macro. 633 */ 634 void kmod_icmp6stat_inc(int statnum); 635 #define KMOD_ICMP6STAT_INC(name) \ 636 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 637 #endif 638 639 /* 640 * Names for ICMP sysctl objects 641 */ 642 #define ICMPV6CTL_STATS 1 643 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 644 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 645 #if 0 /*obsoleted*/ 646 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 647 #endif 648 #define ICMPV6CTL_ND6_PRUNE 6 649 #define ICMPV6CTL_ND6_DELAY 8 650 #define ICMPV6CTL_ND6_UMAXTRIES 9 651 #define ICMPV6CTL_ND6_MMAXTRIES 10 652 #define ICMPV6CTL_ND6_USELOOPBACK 11 653 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 654 #define ICMPV6CTL_NODEINFO 13 655 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 656 #define ICMPV6CTL_ND6_MAXNUDHINT 15 657 #define ICMPV6CTL_MTUDISC_HIWAT 16 658 #define ICMPV6CTL_MTUDISC_LOWAT 17 659 #define ICMPV6CTL_ND6_DEBUG 18 660 #define ICMPV6CTL_ND6_DRLIST 19 661 #define ICMPV6CTL_ND6_PRLIST 20 662 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 663 #define ICMPV6CTL_MLD_SOMAXSRC 22 664 #define ICMPV6CTL_MLD_VERSION 23 665 #define ICMPV6CTL_ND6_MAXQLEN 24 666 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 667 #define ICMPV6CTL_MAXID 26 668 669 #define RTF_PROBEMTU RTF_PROTO1 670 671 #ifdef _KERNEL 672 # ifdef __STDC__ 673 struct rtentry; 674 struct rttimer; 675 struct in6_multi; 676 # endif 677 void icmp6_paramerror(struct mbuf *, int); 678 void icmp6_error(struct mbuf *, int, int, int); 679 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 680 int icmp6_input(struct mbuf **, int *, int); 681 void icmp6_fasttimo(void); 682 void icmp6_slowtimo(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 *); 687 688 struct ip6ctlparam; 689 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 690 691 /* XXX: is this the right place for these macros? */ 692 #define icmp6_ifstat_inc(ifp, tag) \ 693 do { \ 694 if (ifp) \ 695 counter_u64_add(((struct in6_ifextra *) \ 696 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 697 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 698 } while (/*CONSTCOND*/ 0) 699 700 #define icmp6_ifoutstat_inc(ifp, type, code) \ 701 do { \ 702 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 703 if (type < ICMP6_INFOMSG_MASK) \ 704 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 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 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 754 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 755 756 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 757 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 758 759 #define ICMP6_NODEINFO_FQDNOK 0x1 760 #define ICMP6_NODEINFO_NODEADDROK 0x2 761 #define ICMP6_NODEINFO_TMPADDROK 0x4 762 #define ICMP6_NODEINFO_GLOBALOK 0x8 763 #endif /* _KERNEL */ 764 765 #endif /* not _NETINET_ICMP6_H_ */ 766