1 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /*- 35 * Copyright (c) 1982, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 63 */ 64 65 #ifndef _NETINET_ICMP6_H_ 66 #define _NETINET_ICMP6_H_ 67 68 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 69 - sizeof(struct icmp6_hdr) */ 70 71 struct icmp6_hdr { 72 u_int8_t icmp6_type; /* type field */ 73 u_int8_t icmp6_code; /* code field */ 74 u_int16_t icmp6_cksum; /* checksum field */ 75 union { 76 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 77 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 78 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 79 } icmp6_dataun; 80 } __packed; 81 82 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 83 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 84 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 85 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 86 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 87 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 88 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 89 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 90 91 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 92 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 93 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 94 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 95 96 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 97 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 98 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 99 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 100 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 101 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 102 103 /* RFC2292 decls */ 104 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 105 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 106 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 107 108 #ifndef _KERNEL 109 /* the followings are for backward compatibility to old KAME apps. */ 110 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 111 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 112 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 113 #endif 114 115 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 116 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 117 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 118 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 119 #define ND_REDIRECT 137 /* redirect */ 120 121 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 122 123 #define ICMP6_WRUREQUEST 139 /* who are you request */ 124 #define ICMP6_WRUREPLY 140 /* who are you reply */ 125 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 126 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 127 #define ICMP6_NI_QUERY 139 /* node information request */ 128 #define ICMP6_NI_REPLY 140 /* node information reply */ 129 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 130 131 /* The definitions below are experimental. TBA */ 132 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 133 #define MLD_MTRACE 201 /* mtrace messages */ 134 135 #ifndef _KERNEL 136 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 137 #define MLD6_MTRACE MLD_MTRACE 138 #endif 139 140 #define ICMP6_MAXTYPE 201 141 142 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 143 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 144 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 145 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 146 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 147 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 148 #define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 149 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 150 #define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 151 152 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 153 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 154 155 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 156 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 157 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 158 159 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 160 161 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 162 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 163 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 164 165 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 166 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 167 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 168 169 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 170 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 171 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 172 173 /* Used in kernel only */ 174 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 175 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 176 177 /* 178 * Multicast Listener Discovery 179 */ 180 struct mld_hdr { 181 struct icmp6_hdr mld_icmp6_hdr; 182 struct in6_addr mld_addr; /* multicast address */ 183 } __packed; 184 185 /* definitions to provide backward compatibility to old KAME applications */ 186 #ifndef _KERNEL 187 #define mld6_hdr mld_hdr 188 #define mld6_type mld_type 189 #define mld6_code mld_code 190 #define mld6_cksum mld_cksum 191 #define mld6_maxdelay mld_maxdelay 192 #define mld6_reserved mld_reserved 193 #define mld6_addr mld_addr 194 #endif 195 196 /* shortcut macro definitions */ 197 #define mld_type mld_icmp6_hdr.icmp6_type 198 #define mld_code mld_icmp6_hdr.icmp6_code 199 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 200 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 201 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 202 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 203 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 204 205 /* 206 * Neighbor Discovery 207 */ 208 209 struct nd_router_solicit { /* router solicitation */ 210 struct icmp6_hdr nd_rs_hdr; 211 /* could be followed by options */ 212 } __packed; 213 214 #define nd_rs_type nd_rs_hdr.icmp6_type 215 #define nd_rs_code nd_rs_hdr.icmp6_code 216 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 217 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 218 219 struct nd_router_advert { /* router advertisement */ 220 struct icmp6_hdr nd_ra_hdr; 221 u_int32_t nd_ra_reachable; /* reachable time */ 222 u_int32_t nd_ra_retransmit; /* retransmit timer */ 223 /* could be followed by options */ 224 } __packed; 225 226 #define nd_ra_type nd_ra_hdr.icmp6_type 227 #define nd_ra_code nd_ra_hdr.icmp6_code 228 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 229 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 230 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 231 #define ND_RA_FLAG_MANAGED 0x80 232 #define ND_RA_FLAG_OTHER 0x40 233 #define ND_RA_FLAG_HA 0x20 234 235 /* 236 * Router preference values based on draft-draves-ipngwg-router-selection-01. 237 * These are non-standard definitions. 238 */ 239 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 240 241 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 242 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 243 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 244 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 245 246 #ifdef EXPERIMENTAL 247 #define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */ 248 #endif 249 250 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 251 252 struct nd_neighbor_solicit { /* neighbor solicitation */ 253 struct icmp6_hdr nd_ns_hdr; 254 struct in6_addr nd_ns_target; /*target address */ 255 /* could be followed by options */ 256 } __packed; 257 258 #define nd_ns_type nd_ns_hdr.icmp6_type 259 #define nd_ns_code nd_ns_hdr.icmp6_code 260 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 261 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 262 263 struct nd_neighbor_advert { /* neighbor advertisement */ 264 struct icmp6_hdr nd_na_hdr; 265 struct in6_addr nd_na_target; /* target address */ 266 /* could be followed by options */ 267 } __packed; 268 269 #define nd_na_type nd_na_hdr.icmp6_type 270 #define nd_na_code nd_na_hdr.icmp6_code 271 #define nd_na_cksum nd_na_hdr.icmp6_cksum 272 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 273 #if BYTE_ORDER == BIG_ENDIAN 274 #define ND_NA_FLAG_ROUTER 0x80000000 275 #define ND_NA_FLAG_SOLICITED 0x40000000 276 #define ND_NA_FLAG_OVERRIDE 0x20000000 277 #else 278 #if BYTE_ORDER == LITTLE_ENDIAN 279 #define ND_NA_FLAG_ROUTER 0x80 280 #define ND_NA_FLAG_SOLICITED 0x40 281 #define ND_NA_FLAG_OVERRIDE 0x20 282 #endif 283 #endif 284 285 struct nd_redirect { /* redirect */ 286 struct icmp6_hdr nd_rd_hdr; 287 struct in6_addr nd_rd_target; /* target address */ 288 struct in6_addr nd_rd_dst; /* destination address */ 289 /* could be followed by options */ 290 } __packed; 291 292 #define nd_rd_type nd_rd_hdr.icmp6_type 293 #define nd_rd_code nd_rd_hdr.icmp6_code 294 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 295 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 296 297 struct nd_opt_hdr { /* Neighbor discovery option header */ 298 u_int8_t nd_opt_type; 299 u_int8_t nd_opt_len; 300 /* followed by option specific data*/ 301 } __packed; 302 303 #define ND_OPT_SOURCE_LINKADDR 1 304 #define ND_OPT_TARGET_LINKADDR 2 305 #define ND_OPT_PREFIX_INFORMATION 3 306 #define ND_OPT_REDIRECTED_HEADER 4 307 #define ND_OPT_MTU 5 308 #define ND_OPT_NONCE 14 /* RFC 3971 */ 309 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 310 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 311 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 312 #define ND_OPT_MAX 31 313 314 struct nd_opt_prefix_info { /* prefix information */ 315 u_int8_t nd_opt_pi_type; 316 u_int8_t nd_opt_pi_len; 317 u_int8_t nd_opt_pi_prefix_len; 318 u_int8_t nd_opt_pi_flags_reserved; 319 u_int32_t nd_opt_pi_valid_time; 320 u_int32_t nd_opt_pi_preferred_time; 321 u_int32_t nd_opt_pi_reserved2; 322 struct in6_addr nd_opt_pi_prefix; 323 } __packed; 324 325 #define ND_OPT_PI_FLAG_ONLINK 0x80 326 #define ND_OPT_PI_FLAG_AUTO 0x40 327 328 struct nd_opt_rd_hdr { /* redirected header */ 329 u_int8_t nd_opt_rh_type; 330 u_int8_t nd_opt_rh_len; 331 u_int16_t nd_opt_rh_reserved1; 332 u_int32_t nd_opt_rh_reserved2; 333 /* followed by IP header and data */ 334 } __packed; 335 336 struct nd_opt_mtu { /* MTU option */ 337 u_int8_t nd_opt_mtu_type; 338 u_int8_t nd_opt_mtu_len; 339 u_int16_t nd_opt_mtu_reserved; 340 u_int32_t nd_opt_mtu_mtu; 341 } __packed; 342 343 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 344 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 345 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 346 #endif 347 struct nd_opt_nonce { /* nonce option */ 348 u_int8_t nd_opt_nonce_type; 349 u_int8_t nd_opt_nonce_len; 350 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 351 } __packed; 352 353 struct nd_opt_route_info { /* route info */ 354 u_int8_t nd_opt_rti_type; 355 u_int8_t nd_opt_rti_len; 356 u_int8_t nd_opt_rti_prefixlen; 357 u_int8_t nd_opt_rti_flags; 358 u_int32_t nd_opt_rti_lifetime; 359 /* prefix follows */ 360 } __packed; 361 362 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 363 u_int8_t nd_opt_rdnss_type; 364 u_int8_t nd_opt_rdnss_len; 365 u_int16_t nd_opt_rdnss_reserved; 366 u_int32_t nd_opt_rdnss_lifetime; 367 /* followed by list of recursive DNS servers */ 368 } __packed; 369 370 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 371 u_int8_t nd_opt_dnssl_type; 372 u_int8_t nd_opt_dnssl_len; 373 u_int16_t nd_opt_dnssl_reserved; 374 u_int32_t nd_opt_dnssl_lifetime; 375 /* followed by list of DNS search domains */ 376 } __packed; 377 378 /* 379 * icmp6 namelookup 380 */ 381 382 struct icmp6_namelookup { 383 struct icmp6_hdr icmp6_nl_hdr; 384 u_int8_t icmp6_nl_nonce[8]; 385 int32_t icmp6_nl_ttl; 386 #if 0 387 u_int8_t icmp6_nl_len; 388 u_int8_t icmp6_nl_name[3]; 389 #endif 390 /* could be followed by options */ 391 } __packed; 392 393 /* 394 * icmp6 node information 395 */ 396 struct icmp6_nodeinfo { 397 struct icmp6_hdr icmp6_ni_hdr; 398 u_int8_t icmp6_ni_nonce[8]; 399 /* could be followed by reply data */ 400 } __packed; 401 402 #define ni_type icmp6_ni_hdr.icmp6_type 403 #define ni_code icmp6_ni_hdr.icmp6_code 404 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 405 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 406 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 407 408 #define NI_QTYPE_NOOP 0 /* NOOP */ 409 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 410 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 411 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 412 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 413 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 414 415 #if BYTE_ORDER == BIG_ENDIAN 416 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 417 #define NI_FQDN_FLAG_VALIDTTL 0x1 418 #elif BYTE_ORDER == LITTLE_ENDIAN 419 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 420 #define NI_FQDN_FLAG_VALIDTTL 0x0100 421 #endif 422 423 #ifdef NAME_LOOKUPS_04 424 #if BYTE_ORDER == BIG_ENDIAN 425 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 426 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 427 #define NI_NODEADDR_FLAG_GLOBAL 0x4 428 #define NI_NODEADDR_FLAG_ALL 0x8 429 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 430 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 431 #elif BYTE_ORDER == LITTLE_ENDIAN 432 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 433 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 434 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 435 #define NI_NODEADDR_FLAG_ALL 0x0800 436 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 437 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 438 #endif 439 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 440 #if BYTE_ORDER == BIG_ENDIAN 441 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 442 #define NI_NODEADDR_FLAG_ALL 0x2 443 #define NI_NODEADDR_FLAG_COMPAT 0x4 444 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 445 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 446 #define NI_NODEADDR_FLAG_GLOBAL 0x20 447 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 448 #elif BYTE_ORDER == LITTLE_ENDIAN 449 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 450 #define NI_NODEADDR_FLAG_ALL 0x0200 451 #define NI_NODEADDR_FLAG_COMPAT 0x0400 452 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 453 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 454 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 455 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 456 #endif 457 #endif 458 459 struct ni_reply_fqdn { 460 u_int32_t ni_fqdn_ttl; /* TTL */ 461 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 462 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 463 } __packed; 464 465 /* 466 * Router Renumbering. as router-renum-08.txt 467 */ 468 struct icmp6_router_renum { /* router renumbering header */ 469 struct icmp6_hdr rr_hdr; 470 u_int8_t rr_segnum; 471 u_int8_t rr_flags; 472 u_int16_t rr_maxdelay; 473 u_int32_t rr_reserved; 474 } __packed; 475 476 #define ICMP6_RR_FLAGS_TEST 0x80 477 #define ICMP6_RR_FLAGS_REQRESULT 0x40 478 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 479 #define ICMP6_RR_FLAGS_SPECSITE 0x10 480 #define ICMP6_RR_FLAGS_PREVDONE 0x08 481 482 #define rr_type rr_hdr.icmp6_type 483 #define rr_code rr_hdr.icmp6_code 484 #define rr_cksum rr_hdr.icmp6_cksum 485 #define rr_seqnum rr_hdr.icmp6_data32[0] 486 487 struct rr_pco_match { /* match prefix part */ 488 u_int8_t rpm_code; 489 u_int8_t rpm_len; 490 u_int8_t rpm_ordinal; 491 u_int8_t rpm_matchlen; 492 u_int8_t rpm_minlen; 493 u_int8_t rpm_maxlen; 494 u_int16_t rpm_reserved; 495 struct in6_addr rpm_prefix; 496 } __packed; 497 498 #define RPM_PCO_ADD 1 499 #define RPM_PCO_CHANGE 2 500 #define RPM_PCO_SETGLOBAL 3 501 #define RPM_PCO_MAX 4 502 503 struct rr_pco_use { /* use prefix part */ 504 u_int8_t rpu_uselen; 505 u_int8_t rpu_keeplen; 506 u_int8_t rpu_ramask; 507 u_int8_t rpu_raflags; 508 u_int32_t rpu_vltime; 509 u_int32_t rpu_pltime; 510 u_int32_t rpu_flags; 511 struct in6_addr rpu_prefix; 512 } __packed; 513 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 514 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 515 516 #if BYTE_ORDER == BIG_ENDIAN 517 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 518 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 519 #elif BYTE_ORDER == LITTLE_ENDIAN 520 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 521 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 522 #endif 523 524 struct rr_result { /* router renumbering result message */ 525 u_int16_t rrr_flags; 526 u_int8_t rrr_ordinal; 527 u_int8_t rrr_matchedlen; 528 u_int32_t rrr_ifid; 529 struct in6_addr rrr_prefix; 530 } __packed; 531 #if BYTE_ORDER == BIG_ENDIAN 532 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 533 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 534 #elif BYTE_ORDER == LITTLE_ENDIAN 535 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 536 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 537 #endif 538 539 /* 540 * icmp6 filter structures. 541 */ 542 543 struct icmp6_filter { 544 u_int32_t icmp6_filt[8]; 545 }; 546 547 #ifdef _KERNEL 548 #define ICMP6_FILTER_SETPASSALL(filterp) \ 549 do { \ 550 int i; u_char *p; \ 551 p = (u_char *)filterp; \ 552 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 553 p[i] = 0xff; \ 554 } while (/*CONSTCOND*/ 0) 555 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 556 bzero(filterp, sizeof(struct icmp6_filter)) 557 #else /* _KERNEL */ 558 #define ICMP6_FILTER_SETPASSALL(filterp) \ 559 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 560 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 561 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 562 #endif /* _KERNEL */ 563 564 #define ICMP6_FILTER_SETPASS(type, filterp) \ 565 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 566 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 567 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 568 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 569 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 570 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 571 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 572 573 /* 574 * Variables related to this implementation 575 * of the internet control message protocol version 6. 576 */ 577 struct icmp6errstat { 578 uint64_t icp6errs_dst_unreach_noroute; 579 uint64_t icp6errs_dst_unreach_admin; 580 uint64_t icp6errs_dst_unreach_beyondscope; 581 uint64_t icp6errs_dst_unreach_addr; 582 uint64_t icp6errs_dst_unreach_noport; 583 uint64_t icp6errs_packet_too_big; 584 uint64_t icp6errs_time_exceed_transit; 585 uint64_t icp6errs_time_exceed_reassembly; 586 uint64_t icp6errs_paramprob_header; 587 uint64_t icp6errs_paramprob_nextheader; 588 uint64_t icp6errs_paramprob_option; 589 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 590 uint64_t icp6errs_unknown; 591 }; 592 593 struct icmp6stat { 594 /* statistics related to icmp6 packets generated */ 595 uint64_t icp6s_error; /* # of calls to icmp6_error */ 596 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 597 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 598 uint64_t icp6s_outhist[256]; 599 /* statistics related to input message processed */ 600 uint64_t icp6s_badcode; /* icmp6_code out of range */ 601 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 602 uint64_t icp6s_checksum; /* bad checksum */ 603 uint64_t icp6s_badlen; /* calculated bound mismatch */ 604 uint64_t icp6s_dropped; /* # of packets dropped waiting for a resolution */ 605 /* 606 * number of responses: this member is inherited from netinet code, but 607 * for netinet6 code, it is already available in icp6s_outhist[]. 608 */ 609 uint64_t icp6s_reflect; 610 uint64_t icp6s_inhist[256]; 611 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 612 struct icmp6errstat icp6s_outerrhist; 613 #define icp6s_odst_unreach_noroute \ 614 icp6s_outerrhist.icp6errs_dst_unreach_noroute 615 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 616 #define icp6s_odst_unreach_beyondscope \ 617 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 618 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 619 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 620 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 621 #define icp6s_otime_exceed_transit \ 622 icp6s_outerrhist.icp6errs_time_exceed_transit 623 #define icp6s_otime_exceed_reassembly \ 624 icp6s_outerrhist.icp6errs_time_exceed_reassembly 625 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 626 #define icp6s_oparamprob_nextheader \ 627 icp6s_outerrhist.icp6errs_paramprob_nextheader 628 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 629 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 630 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 631 uint64_t icp6s_pmtuchg; /* path MTU changes */ 632 uint64_t icp6s_nd_badopt; /* bad ND options */ 633 uint64_t icp6s_badns; /* bad neighbor solicitation */ 634 uint64_t icp6s_badna; /* bad neighbor advertisement */ 635 uint64_t icp6s_badrs; /* bad router solicitation */ 636 uint64_t icp6s_badra; /* bad router advertisement */ 637 uint64_t icp6s_badredirect; /* bad redirect message */ 638 uint64_t icp6s_overflowdefrtr; /* Too many default routers. */ 639 uint64_t icp6s_overflowprfx; /* Too many prefixes. */ 640 uint64_t icp6s_overflownndp; /* Too many neighbour entries. */ 641 uint64_t icp6s_overflowredirect;/* Too many redirects. */ 642 uint64_t icp6s_invlhlim; /* Invalid hop limit. */ 643 uint64_t icp6s_spare[32]; 644 }; 645 646 #ifdef _KERNEL 647 #include <sys/counter.h> 648 649 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 650 /* 651 * In-kernel consumers can use these accessor macros directly to update 652 * stats. 653 */ 654 #define ICMP6STAT_ADD(name, val) \ 655 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 656 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 657 658 /* 659 * Kernel module consumers must use this accessor macro. 660 */ 661 void kmod_icmp6stat_inc(int statnum); 662 #define KMOD_ICMP6STAT_INC(name) \ 663 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 664 #endif 665 666 /* 667 * Names for ICMP sysctl objects 668 */ 669 #define ICMPV6CTL_STATS 1 670 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 671 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 672 #if 0 /*obsoleted*/ 673 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 674 #endif 675 #define ICMPV6CTL_ND6_PRUNE 6 676 #define ICMPV6CTL_ND6_DELAY 8 677 #define ICMPV6CTL_ND6_UMAXTRIES 9 678 #define ICMPV6CTL_ND6_MMAXTRIES 10 679 #define ICMPV6CTL_ND6_USELOOPBACK 11 680 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 681 #define ICMPV6CTL_NODEINFO 13 682 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 683 #define ICMPV6CTL_ND6_MAXNUDHINT 15 684 #define ICMPV6CTL_MTUDISC_HIWAT 16 685 #define ICMPV6CTL_MTUDISC_LOWAT 17 686 #define ICMPV6CTL_ND6_DEBUG 18 687 #define ICMPV6CTL_ND6_DRLIST 19 688 #define ICMPV6CTL_ND6_PRLIST 20 689 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 690 #define ICMPV6CTL_MLD_SOMAXSRC 22 691 #define ICMPV6CTL_MLD_VERSION 23 692 #define ICMPV6CTL_ND6_MAXQLEN 24 693 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 694 #define ICMPV6CTL_MAXID 26 695 696 #ifdef _KERNEL 697 # ifdef __STDC__ 698 struct nhop_object; 699 struct rttimer; 700 struct in6_multi; 701 # endif 702 void icmp6_paramerror(struct mbuf *, int); 703 int icmp6_errmap(const struct icmp6_hdr *); 704 void icmp6_error(struct mbuf *, int, int, int); 705 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 706 int icmp6_input(struct mbuf **, int *, int); 707 void icmp6_prepare(struct mbuf *); 708 void icmp6_redirect_input(struct mbuf *, int); 709 void icmp6_redirect_output(struct mbuf *, struct nhop_object *); 710 int icmp6_ratelimit(const struct in6_addr *, const int, const int); 711 712 struct ip6ctlparam; 713 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 714 715 /* XXX: is this the right place for these macros? */ 716 #define icmp6_ifstat_inc(ifp, tag) \ 717 do { \ 718 if (ifp) \ 719 counter_u64_add(((struct in6_ifextra *) \ 720 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 721 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 722 } while (/*CONSTCOND*/ 0) 723 724 #define icmp6_ifoutstat_inc(ifp, type, code) \ 725 do { \ 726 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 727 if (type < ICMP6_INFOMSG_MASK) \ 728 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 729 switch (type) { \ 730 case ICMP6_DST_UNREACH: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 732 if (code == ICMP6_DST_UNREACH_ADMIN) \ 733 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 734 break; \ 735 case ICMP6_PACKET_TOO_BIG: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 737 break; \ 738 case ICMP6_TIME_EXCEEDED: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 740 break; \ 741 case ICMP6_PARAM_PROB: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 743 break; \ 744 case ICMP6_ECHO_REQUEST: \ 745 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 746 break; \ 747 case ICMP6_ECHO_REPLY: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 749 break; \ 750 case MLD_LISTENER_QUERY: \ 751 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 752 break; \ 753 case MLD_LISTENER_REPORT: \ 754 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 755 break; \ 756 case MLD_LISTENER_DONE: \ 757 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 758 break; \ 759 case ND_ROUTER_SOLICIT: \ 760 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 761 break; \ 762 case ND_ROUTER_ADVERT: \ 763 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 764 break; \ 765 case ND_NEIGHBOR_SOLICIT: \ 766 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 767 break; \ 768 case ND_NEIGHBOR_ADVERT: \ 769 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 770 break; \ 771 case ND_REDIRECT: \ 772 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 773 break; \ 774 } \ 775 } while (/*CONSTCOND*/ 0) 776 777 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 778 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 779 780 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 781 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 782 783 #define ICMP6_NODEINFO_FQDNOK 0x1 784 #define ICMP6_NODEINFO_NODEADDROK 0x2 785 #define ICMP6_NODEINFO_TMPADDROK 0x4 786 #define ICMP6_NODEINFO_GLOBALOK 0x8 787 #endif /* _KERNEL */ 788 789 #endif /* not _NETINET_ICMP6_H_ */ 790