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 * 3. 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 #define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 148 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 149 #define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 150 151 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 152 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 153 154 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 155 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 156 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 157 158 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 159 160 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 161 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 162 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 163 164 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 165 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 166 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 167 168 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 169 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 170 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 171 172 /* Used in kernel only */ 173 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 174 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 175 176 /* 177 * Multicast Listener Discovery 178 */ 179 struct mld_hdr { 180 struct icmp6_hdr mld_icmp6_hdr; 181 struct in6_addr mld_addr; /* multicast address */ 182 } __packed; 183 184 /* definitions to provide backward compatibility to old KAME applications */ 185 #ifndef _KERNEL 186 #define mld6_hdr mld_hdr 187 #define mld6_type mld_type 188 #define mld6_code mld_code 189 #define mld6_cksum mld_cksum 190 #define mld6_maxdelay mld_maxdelay 191 #define mld6_reserved mld_reserved 192 #define mld6_addr mld_addr 193 #endif 194 195 /* shortcut macro definitions */ 196 #define mld_type mld_icmp6_hdr.icmp6_type 197 #define mld_code mld_icmp6_hdr.icmp6_code 198 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 199 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 200 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 201 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 202 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 203 204 /* 205 * Neighbor Discovery 206 */ 207 208 struct nd_router_solicit { /* router solicitation */ 209 struct icmp6_hdr nd_rs_hdr; 210 /* could be followed by options */ 211 } __packed; 212 213 #define nd_rs_type nd_rs_hdr.icmp6_type 214 #define nd_rs_code nd_rs_hdr.icmp6_code 215 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 216 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 217 218 struct nd_router_advert { /* router advertisement */ 219 struct icmp6_hdr nd_ra_hdr; 220 u_int32_t nd_ra_reachable; /* reachable time */ 221 u_int32_t nd_ra_retransmit; /* retransmit timer */ 222 /* could be followed by options */ 223 } __packed; 224 225 #define nd_ra_type nd_ra_hdr.icmp6_type 226 #define nd_ra_code nd_ra_hdr.icmp6_code 227 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 228 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 229 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 230 #define ND_RA_FLAG_MANAGED 0x80 231 #define ND_RA_FLAG_OTHER 0x40 232 #define ND_RA_FLAG_HA 0x20 233 234 /* 235 * Router preference values based on draft-draves-ipngwg-router-selection-01. 236 * These are non-standard definitions. 237 */ 238 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 239 240 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 241 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 242 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 243 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 244 245 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 246 247 struct nd_neighbor_solicit { /* neighbor solicitation */ 248 struct icmp6_hdr nd_ns_hdr; 249 struct in6_addr nd_ns_target; /*target address */ 250 /* could be followed by options */ 251 } __packed; 252 253 #define nd_ns_type nd_ns_hdr.icmp6_type 254 #define nd_ns_code nd_ns_hdr.icmp6_code 255 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 256 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 257 258 struct nd_neighbor_advert { /* neighbor advertisement */ 259 struct icmp6_hdr nd_na_hdr; 260 struct in6_addr nd_na_target; /* target address */ 261 /* could be followed by options */ 262 } __packed; 263 264 #define nd_na_type nd_na_hdr.icmp6_type 265 #define nd_na_code nd_na_hdr.icmp6_code 266 #define nd_na_cksum nd_na_hdr.icmp6_cksum 267 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 268 #if BYTE_ORDER == BIG_ENDIAN 269 #define ND_NA_FLAG_ROUTER 0x80000000 270 #define ND_NA_FLAG_SOLICITED 0x40000000 271 #define ND_NA_FLAG_OVERRIDE 0x20000000 272 #else 273 #if BYTE_ORDER == LITTLE_ENDIAN 274 #define ND_NA_FLAG_ROUTER 0x80 275 #define ND_NA_FLAG_SOLICITED 0x40 276 #define ND_NA_FLAG_OVERRIDE 0x20 277 #endif 278 #endif 279 280 struct nd_redirect { /* redirect */ 281 struct icmp6_hdr nd_rd_hdr; 282 struct in6_addr nd_rd_target; /* target address */ 283 struct in6_addr nd_rd_dst; /* destination address */ 284 /* could be followed by options */ 285 } __packed; 286 287 #define nd_rd_type nd_rd_hdr.icmp6_type 288 #define nd_rd_code nd_rd_hdr.icmp6_code 289 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 290 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 291 292 struct nd_opt_hdr { /* Neighbor discovery option header */ 293 u_int8_t nd_opt_type; 294 u_int8_t nd_opt_len; 295 /* followed by option specific data*/ 296 } __packed; 297 298 #define ND_OPT_SOURCE_LINKADDR 1 299 #define ND_OPT_TARGET_LINKADDR 2 300 #define ND_OPT_PREFIX_INFORMATION 3 301 #define ND_OPT_REDIRECTED_HEADER 4 302 #define ND_OPT_MTU 5 303 #define ND_OPT_NONCE 14 /* RFC 3971 */ 304 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 305 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 306 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 307 #define ND_OPT_MAX 31 308 309 struct nd_opt_prefix_info { /* prefix information */ 310 u_int8_t nd_opt_pi_type; 311 u_int8_t nd_opt_pi_len; 312 u_int8_t nd_opt_pi_prefix_len; 313 u_int8_t nd_opt_pi_flags_reserved; 314 u_int32_t nd_opt_pi_valid_time; 315 u_int32_t nd_opt_pi_preferred_time; 316 u_int32_t nd_opt_pi_reserved2; 317 struct in6_addr nd_opt_pi_prefix; 318 } __packed; 319 320 #define ND_OPT_PI_FLAG_ONLINK 0x80 321 #define ND_OPT_PI_FLAG_AUTO 0x40 322 323 struct nd_opt_rd_hdr { /* redirected header */ 324 u_int8_t nd_opt_rh_type; 325 u_int8_t nd_opt_rh_len; 326 u_int16_t nd_opt_rh_reserved1; 327 u_int32_t nd_opt_rh_reserved2; 328 /* followed by IP header and data */ 329 } __packed; 330 331 struct nd_opt_mtu { /* MTU option */ 332 u_int8_t nd_opt_mtu_type; 333 u_int8_t nd_opt_mtu_len; 334 u_int16_t nd_opt_mtu_reserved; 335 u_int32_t nd_opt_mtu_mtu; 336 } __packed; 337 338 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 339 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 340 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 341 #endif 342 struct nd_opt_nonce { /* nonce option */ 343 u_int8_t nd_opt_nonce_type; 344 u_int8_t nd_opt_nonce_len; 345 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 346 } __packed; 347 348 struct nd_opt_route_info { /* route info */ 349 u_int8_t nd_opt_rti_type; 350 u_int8_t nd_opt_rti_len; 351 u_int8_t nd_opt_rti_prefixlen; 352 u_int8_t nd_opt_rti_flags; 353 u_int32_t nd_opt_rti_lifetime; 354 /* prefix follows */ 355 } __packed; 356 357 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 358 u_int8_t nd_opt_rdnss_type; 359 u_int8_t nd_opt_rdnss_len; 360 u_int16_t nd_opt_rdnss_reserved; 361 u_int32_t nd_opt_rdnss_lifetime; 362 /* followed by list of recursive DNS servers */ 363 } __packed; 364 365 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 366 u_int8_t nd_opt_dnssl_type; 367 u_int8_t nd_opt_dnssl_len; 368 u_int16_t nd_opt_dnssl_reserved; 369 u_int32_t nd_opt_dnssl_lifetime; 370 /* followed by list of DNS search domains */ 371 } __packed; 372 373 /* 374 * icmp6 namelookup 375 */ 376 377 struct icmp6_namelookup { 378 struct icmp6_hdr icmp6_nl_hdr; 379 u_int8_t icmp6_nl_nonce[8]; 380 int32_t icmp6_nl_ttl; 381 #if 0 382 u_int8_t icmp6_nl_len; 383 u_int8_t icmp6_nl_name[3]; 384 #endif 385 /* could be followed by options */ 386 } __packed; 387 388 /* 389 * icmp6 node information 390 */ 391 struct icmp6_nodeinfo { 392 struct icmp6_hdr icmp6_ni_hdr; 393 u_int8_t icmp6_ni_nonce[8]; 394 /* could be followed by reply data */ 395 } __packed; 396 397 #define ni_type icmp6_ni_hdr.icmp6_type 398 #define ni_code icmp6_ni_hdr.icmp6_code 399 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 400 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 401 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 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 #ifdef _KERNEL 543 #define ICMP6_FILTER_SETPASSALL(filterp) \ 544 do { \ 545 int i; u_char *p; \ 546 p = (u_char *)filterp; \ 547 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 548 p[i] = 0xff; \ 549 } while (/*CONSTCOND*/ 0) 550 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 551 bzero(filterp, sizeof(struct icmp6_filter)) 552 #else /* _KERNEL */ 553 #define ICMP6_FILTER_SETPASSALL(filterp) \ 554 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 555 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 556 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 557 #endif /* _KERNEL */ 558 559 #define ICMP6_FILTER_SETPASS(type, filterp) \ 560 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 561 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 562 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 563 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 564 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 565 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 566 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 567 568 /* 569 * Variables related to this implementation 570 * of the internet control message protocol version 6. 571 */ 572 struct icmp6errstat { 573 uint64_t icp6errs_dst_unreach_noroute; 574 uint64_t icp6errs_dst_unreach_admin; 575 uint64_t icp6errs_dst_unreach_beyondscope; 576 uint64_t icp6errs_dst_unreach_addr; 577 uint64_t icp6errs_dst_unreach_noport; 578 uint64_t icp6errs_packet_too_big; 579 uint64_t icp6errs_time_exceed_transit; 580 uint64_t icp6errs_time_exceed_reassembly; 581 uint64_t icp6errs_paramprob_header; 582 uint64_t icp6errs_paramprob_nextheader; 583 uint64_t icp6errs_paramprob_option; 584 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 585 uint64_t icp6errs_unknown; 586 }; 587 588 struct icmp6stat { 589 /* statistics related to icmp6 packets generated */ 590 uint64_t icp6s_error; /* # of calls to icmp6_error */ 591 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 592 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 593 uint64_t icp6s_outhist[256]; 594 /* statistics related to input message processed */ 595 uint64_t icp6s_badcode; /* icmp6_code out of range */ 596 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 597 uint64_t icp6s_checksum; /* bad checksum */ 598 uint64_t icp6s_badlen; /* calculated bound mismatch */ 599 /* 600 * number of responses: this member is inherited from netinet code, but 601 * for netinet6 code, it is already available in icp6s_outhist[]. 602 */ 603 uint64_t icp6s_reflect; 604 uint64_t icp6s_inhist[256]; 605 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 606 struct icmp6errstat icp6s_outerrhist; 607 #define icp6s_odst_unreach_noroute \ 608 icp6s_outerrhist.icp6errs_dst_unreach_noroute 609 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 610 #define icp6s_odst_unreach_beyondscope \ 611 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 612 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 613 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 614 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 615 #define icp6s_otime_exceed_transit \ 616 icp6s_outerrhist.icp6errs_time_exceed_transit 617 #define icp6s_otime_exceed_reassembly \ 618 icp6s_outerrhist.icp6errs_time_exceed_reassembly 619 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 620 #define icp6s_oparamprob_nextheader \ 621 icp6s_outerrhist.icp6errs_paramprob_nextheader 622 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 623 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 624 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 625 uint64_t icp6s_pmtuchg; /* path MTU changes */ 626 uint64_t icp6s_nd_badopt; /* bad ND options */ 627 uint64_t icp6s_badns; /* bad neighbor solicitation */ 628 uint64_t icp6s_badna; /* bad neighbor advertisement */ 629 uint64_t icp6s_badrs; /* bad router advertisement */ 630 uint64_t icp6s_badra; /* bad router advertisement */ 631 uint64_t icp6s_badredirect; /* bad redirect message */ 632 }; 633 634 #ifdef _KERNEL 635 #include <sys/counter.h> 636 637 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 638 /* 639 * In-kernel consumers can use these accessor macros directly to update 640 * stats. 641 */ 642 #define ICMP6STAT_ADD(name, val) \ 643 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 644 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 645 646 /* 647 * Kernel module consumers must use this accessor macro. 648 */ 649 void kmod_icmp6stat_inc(int statnum); 650 #define KMOD_ICMP6STAT_INC(name) \ 651 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 652 #endif 653 654 /* 655 * Names for ICMP sysctl objects 656 */ 657 #define ICMPV6CTL_STATS 1 658 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 659 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 660 #if 0 /*obsoleted*/ 661 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 662 #endif 663 #define ICMPV6CTL_ND6_PRUNE 6 664 #define ICMPV6CTL_ND6_DELAY 8 665 #define ICMPV6CTL_ND6_UMAXTRIES 9 666 #define ICMPV6CTL_ND6_MMAXTRIES 10 667 #define ICMPV6CTL_ND6_USELOOPBACK 11 668 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 669 #define ICMPV6CTL_NODEINFO 13 670 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 671 #define ICMPV6CTL_ND6_MAXNUDHINT 15 672 #define ICMPV6CTL_MTUDISC_HIWAT 16 673 #define ICMPV6CTL_MTUDISC_LOWAT 17 674 #define ICMPV6CTL_ND6_DEBUG 18 675 #define ICMPV6CTL_ND6_DRLIST 19 676 #define ICMPV6CTL_ND6_PRLIST 20 677 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 678 #define ICMPV6CTL_MLD_SOMAXSRC 22 679 #define ICMPV6CTL_MLD_VERSION 23 680 #define ICMPV6CTL_ND6_MAXQLEN 24 681 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 682 #define ICMPV6CTL_MAXID 26 683 684 #define RTF_PROBEMTU RTF_PROTO1 685 686 #ifdef _KERNEL 687 # ifdef __STDC__ 688 struct rtentry; 689 struct rttimer; 690 struct in6_multi; 691 # endif 692 void icmp6_paramerror(struct mbuf *, int); 693 void icmp6_error(struct mbuf *, int, int, int); 694 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 695 int icmp6_input(struct mbuf **, int *, int); 696 void icmp6_fasttimo(void); 697 void icmp6_slowtimo(void); 698 void icmp6_reflect(struct mbuf *, size_t); 699 void icmp6_prepare(struct mbuf *); 700 void icmp6_redirect_input(struct mbuf *, int); 701 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 702 703 struct ip6ctlparam; 704 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 705 706 /* XXX: is this the right place for these macros? */ 707 #define icmp6_ifstat_inc(ifp, tag) \ 708 do { \ 709 if (ifp) \ 710 counter_u64_add(((struct in6_ifextra *) \ 711 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 712 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 713 } while (/*CONSTCOND*/ 0) 714 715 #define icmp6_ifoutstat_inc(ifp, type, code) \ 716 do { \ 717 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 718 if (type < ICMP6_INFOMSG_MASK) \ 719 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 720 switch (type) { \ 721 case ICMP6_DST_UNREACH: \ 722 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 723 if (code == ICMP6_DST_UNREACH_ADMIN) \ 724 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 725 break; \ 726 case ICMP6_PACKET_TOO_BIG: \ 727 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 728 break; \ 729 case ICMP6_TIME_EXCEEDED: \ 730 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 731 break; \ 732 case ICMP6_PARAM_PROB: \ 733 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 734 break; \ 735 case ICMP6_ECHO_REQUEST: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 737 break; \ 738 case ICMP6_ECHO_REPLY: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 740 break; \ 741 case MLD_LISTENER_QUERY: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 743 break; \ 744 case MLD_LISTENER_REPORT: \ 745 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 746 break; \ 747 case MLD_LISTENER_DONE: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 749 break; \ 750 case ND_ROUTER_SOLICIT: \ 751 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 752 break; \ 753 case ND_ROUTER_ADVERT: \ 754 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 755 break; \ 756 case ND_NEIGHBOR_SOLICIT: \ 757 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 758 break; \ 759 case ND_NEIGHBOR_ADVERT: \ 760 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 761 break; \ 762 case ND_REDIRECT: \ 763 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 764 break; \ 765 } \ 766 } while (/*CONSTCOND*/ 0) 767 768 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 769 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 770 771 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 772 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 773 774 #define ICMP6_NODEINFO_FQDNOK 0x1 775 #define ICMP6_NODEINFO_NODEADDROK 0x2 776 #define ICMP6_NODEINFO_TMPADDROK 0x4 777 #define ICMP6_NODEINFO_GLOBALOK 0x8 778 #endif /* _KERNEL */ 779 780 #endif /* not _NETINET_ICMP6_H_ */ 781