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 #ifdef FSTACK 68 #define __packed __attribute__((__packed__)) 69 #endif 70 71 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 72 - sizeof(struct icmp6_hdr) */ 73 74 struct icmp6_hdr { 75 u_int8_t icmp6_type; /* type field */ 76 u_int8_t icmp6_code; /* code field */ 77 u_int16_t icmp6_cksum; /* checksum field */ 78 union { 79 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 80 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 81 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 82 } icmp6_dataun; 83 } __packed; 84 85 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 86 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 87 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 88 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 89 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 90 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 91 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 92 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 93 94 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 95 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 96 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 97 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 98 99 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 100 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 101 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 102 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 103 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 104 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 105 106 /* RFC2292 decls */ 107 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 108 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 109 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 110 111 #ifndef _KERNEL 112 /* the followings are for backward compatibility to old KAME apps. */ 113 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 114 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 115 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 116 #endif 117 118 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 119 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 120 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 121 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 122 #define ND_REDIRECT 137 /* redirect */ 123 124 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 125 126 #define ICMP6_WRUREQUEST 139 /* who are you request */ 127 #define ICMP6_WRUREPLY 140 /* who are you reply */ 128 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 129 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 130 #define ICMP6_NI_QUERY 139 /* node information request */ 131 #define ICMP6_NI_REPLY 140 /* node information reply */ 132 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 133 134 /* The definitions below are experimental. TBA */ 135 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 136 #define MLD_MTRACE 201 /* mtrace messages */ 137 138 #ifndef _KERNEL 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 /* failed ingress/egress policy */ 152 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 153 #define ICMP6_DST_UNREACH_SRCROUTE 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 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 206 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 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_HA 0x20 237 238 /* 239 * Router preference values based on draft-draves-ipngwg-router-selection-01. 240 * These are non-standard definitions. 241 */ 242 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 243 244 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 245 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 246 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 247 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 248 249 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 250 251 struct nd_neighbor_solicit { /* neighbor solicitation */ 252 struct icmp6_hdr nd_ns_hdr; 253 struct in6_addr nd_ns_target; /*target address */ 254 /* could be followed by options */ 255 } __packed; 256 257 #define nd_ns_type nd_ns_hdr.icmp6_type 258 #define nd_ns_code nd_ns_hdr.icmp6_code 259 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 260 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 261 262 struct nd_neighbor_advert { /* neighbor advertisement */ 263 struct icmp6_hdr nd_na_hdr; 264 struct in6_addr nd_na_target; /* target address */ 265 /* could be followed by options */ 266 } __packed; 267 268 #define nd_na_type nd_na_hdr.icmp6_type 269 #define nd_na_code nd_na_hdr.icmp6_code 270 #define nd_na_cksum nd_na_hdr.icmp6_cksum 271 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 272 #if BYTE_ORDER == BIG_ENDIAN 273 #define ND_NA_FLAG_ROUTER 0x80000000 274 #define ND_NA_FLAG_SOLICITED 0x40000000 275 #define ND_NA_FLAG_OVERRIDE 0x20000000 276 #else 277 #if BYTE_ORDER == LITTLE_ENDIAN 278 #define ND_NA_FLAG_ROUTER 0x80 279 #define ND_NA_FLAG_SOLICITED 0x40 280 #define ND_NA_FLAG_OVERRIDE 0x20 281 #endif 282 #endif 283 284 struct nd_redirect { /* redirect */ 285 struct icmp6_hdr nd_rd_hdr; 286 struct in6_addr nd_rd_target; /* target address */ 287 struct in6_addr nd_rd_dst; /* destination address */ 288 /* could be followed by options */ 289 } __packed; 290 291 #define nd_rd_type nd_rd_hdr.icmp6_type 292 #define nd_rd_code nd_rd_hdr.icmp6_code 293 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 294 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 295 296 struct nd_opt_hdr { /* Neighbor discovery option header */ 297 u_int8_t nd_opt_type; 298 u_int8_t nd_opt_len; 299 /* followed by option specific data*/ 300 } __packed; 301 302 #define ND_OPT_SOURCE_LINKADDR 1 303 #define ND_OPT_TARGET_LINKADDR 2 304 #define ND_OPT_PREFIX_INFORMATION 3 305 #define ND_OPT_REDIRECTED_HEADER 4 306 #define ND_OPT_MTU 5 307 #define ND_OPT_NONCE 14 /* RFC 3971 */ 308 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 309 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 310 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 311 #define ND_OPT_MAX 31 312 313 struct nd_opt_prefix_info { /* prefix information */ 314 u_int8_t nd_opt_pi_type; 315 u_int8_t nd_opt_pi_len; 316 u_int8_t nd_opt_pi_prefix_len; 317 u_int8_t nd_opt_pi_flags_reserved; 318 u_int32_t nd_opt_pi_valid_time; 319 u_int32_t nd_opt_pi_preferred_time; 320 u_int32_t nd_opt_pi_reserved2; 321 struct in6_addr nd_opt_pi_prefix; 322 } __packed; 323 324 #define ND_OPT_PI_FLAG_ONLINK 0x80 325 #define ND_OPT_PI_FLAG_AUTO 0x40 326 327 struct nd_opt_rd_hdr { /* redirected header */ 328 u_int8_t nd_opt_rh_type; 329 u_int8_t nd_opt_rh_len; 330 u_int16_t nd_opt_rh_reserved1; 331 u_int32_t nd_opt_rh_reserved2; 332 /* followed by IP header and data */ 333 } __packed; 334 335 struct nd_opt_mtu { /* MTU option */ 336 u_int8_t nd_opt_mtu_type; 337 u_int8_t nd_opt_mtu_len; 338 u_int16_t nd_opt_mtu_reserved; 339 u_int32_t nd_opt_mtu_mtu; 340 } __packed; 341 342 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 343 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 344 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 345 #endif 346 struct nd_opt_nonce { /* nonce option */ 347 u_int8_t nd_opt_nonce_type; 348 u_int8_t nd_opt_nonce_len; 349 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 350 } __packed; 351 352 struct nd_opt_route_info { /* route info */ 353 u_int8_t nd_opt_rti_type; 354 u_int8_t nd_opt_rti_len; 355 u_int8_t nd_opt_rti_prefixlen; 356 u_int8_t nd_opt_rti_flags; 357 u_int32_t nd_opt_rti_lifetime; 358 /* prefix follows */ 359 } __packed; 360 361 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 362 u_int8_t nd_opt_rdnss_type; 363 u_int8_t nd_opt_rdnss_len; 364 u_int16_t nd_opt_rdnss_reserved; 365 u_int32_t nd_opt_rdnss_lifetime; 366 /* followed by list of recursive DNS servers */ 367 } __packed; 368 369 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 370 u_int8_t nd_opt_dnssl_type; 371 u_int8_t nd_opt_dnssl_len; 372 u_int16_t nd_opt_dnssl_reserved; 373 u_int32_t nd_opt_dnssl_lifetime; 374 /* followed by list of DNS search domains */ 375 } __packed; 376 377 /* 378 * icmp6 namelookup 379 */ 380 381 struct icmp6_namelookup { 382 struct icmp6_hdr icmp6_nl_hdr; 383 u_int8_t icmp6_nl_nonce[8]; 384 int32_t icmp6_nl_ttl; 385 #if 0 386 u_int8_t icmp6_nl_len; 387 u_int8_t icmp6_nl_name[3]; 388 #endif 389 /* could be followed by options */ 390 } __packed; 391 392 /* 393 * icmp6 node information 394 */ 395 struct icmp6_nodeinfo { 396 struct icmp6_hdr icmp6_ni_hdr; 397 u_int8_t icmp6_ni_nonce[8]; 398 /* could be followed by reply data */ 399 } __packed; 400 401 #define ni_type icmp6_ni_hdr.icmp6_type 402 #define ni_code icmp6_ni_hdr.icmp6_code 403 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 404 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 405 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 406 407 #define NI_QTYPE_NOOP 0 /* NOOP */ 408 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 409 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 410 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 411 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 412 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 413 414 #if BYTE_ORDER == BIG_ENDIAN 415 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 416 #define NI_FQDN_FLAG_VALIDTTL 0x1 417 #elif BYTE_ORDER == LITTLE_ENDIAN 418 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 419 #define NI_FQDN_FLAG_VALIDTTL 0x0100 420 #endif 421 422 #ifdef NAME_LOOKUPS_04 423 #if BYTE_ORDER == BIG_ENDIAN 424 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 425 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 426 #define NI_NODEADDR_FLAG_GLOBAL 0x4 427 #define NI_NODEADDR_FLAG_ALL 0x8 428 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 429 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 430 #elif BYTE_ORDER == LITTLE_ENDIAN 431 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 432 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 433 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 434 #define NI_NODEADDR_FLAG_ALL 0x0800 435 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 436 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 437 #endif 438 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 439 #if BYTE_ORDER == BIG_ENDIAN 440 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 441 #define NI_NODEADDR_FLAG_ALL 0x2 442 #define NI_NODEADDR_FLAG_COMPAT 0x4 443 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 444 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 445 #define NI_NODEADDR_FLAG_GLOBAL 0x20 446 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 447 #elif BYTE_ORDER == LITTLE_ENDIAN 448 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 449 #define NI_NODEADDR_FLAG_ALL 0x0200 450 #define NI_NODEADDR_FLAG_COMPAT 0x0400 451 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 452 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 453 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 454 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 455 #endif 456 #endif 457 458 struct ni_reply_fqdn { 459 u_int32_t ni_fqdn_ttl; /* TTL */ 460 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 461 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 462 } __packed; 463 464 /* 465 * Router Renumbering. as router-renum-08.txt 466 */ 467 struct icmp6_router_renum { /* router renumbering header */ 468 struct icmp6_hdr rr_hdr; 469 u_int8_t rr_segnum; 470 u_int8_t rr_flags; 471 u_int16_t rr_maxdelay; 472 u_int32_t rr_reserved; 473 } __packed; 474 475 #define ICMP6_RR_FLAGS_TEST 0x80 476 #define ICMP6_RR_FLAGS_REQRESULT 0x40 477 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 478 #define ICMP6_RR_FLAGS_SPECSITE 0x10 479 #define ICMP6_RR_FLAGS_PREVDONE 0x08 480 481 #define rr_type rr_hdr.icmp6_type 482 #define rr_code rr_hdr.icmp6_code 483 #define rr_cksum rr_hdr.icmp6_cksum 484 #define rr_seqnum rr_hdr.icmp6_data32[0] 485 486 struct rr_pco_match { /* match prefix part */ 487 u_int8_t rpm_code; 488 u_int8_t rpm_len; 489 u_int8_t rpm_ordinal; 490 u_int8_t rpm_matchlen; 491 u_int8_t rpm_minlen; 492 u_int8_t rpm_maxlen; 493 u_int16_t rpm_reserved; 494 struct in6_addr rpm_prefix; 495 } __packed; 496 497 #define RPM_PCO_ADD 1 498 #define RPM_PCO_CHANGE 2 499 #define RPM_PCO_SETGLOBAL 3 500 #define RPM_PCO_MAX 4 501 502 struct rr_pco_use { /* use prefix part */ 503 u_int8_t rpu_uselen; 504 u_int8_t rpu_keeplen; 505 u_int8_t rpu_ramask; 506 u_int8_t rpu_raflags; 507 u_int32_t rpu_vltime; 508 u_int32_t rpu_pltime; 509 u_int32_t rpu_flags; 510 struct in6_addr rpu_prefix; 511 } __packed; 512 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 513 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 514 515 #if BYTE_ORDER == BIG_ENDIAN 516 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 517 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 518 #elif BYTE_ORDER == LITTLE_ENDIAN 519 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 520 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 521 #endif 522 523 struct rr_result { /* router renumbering result message */ 524 u_int16_t rrr_flags; 525 u_int8_t rrr_ordinal; 526 u_int8_t rrr_matchedlen; 527 u_int32_t rrr_ifid; 528 struct in6_addr rrr_prefix; 529 } __packed; 530 #if BYTE_ORDER == BIG_ENDIAN 531 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 532 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 533 #elif BYTE_ORDER == LITTLE_ENDIAN 534 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 535 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 536 #endif 537 538 /* 539 * icmp6 filter structures. 540 */ 541 542 struct icmp6_filter { 543 u_int32_t icmp6_filt[8]; 544 }; 545 546 #ifdef _KERNEL 547 #define ICMP6_FILTER_SETPASSALL(filterp) \ 548 do { \ 549 int i; u_char *p; \ 550 p = (u_char *)filterp; \ 551 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 552 p[i] = 0xff; \ 553 } while (/*CONSTCOND*/ 0) 554 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 555 bzero(filterp, sizeof(struct icmp6_filter)) 556 #else /* _KERNEL */ 557 #define ICMP6_FILTER_SETPASSALL(filterp) \ 558 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 559 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 560 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 561 #endif /* _KERNEL */ 562 563 #define ICMP6_FILTER_SETPASS(type, filterp) \ 564 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 565 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 566 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 567 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 568 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 569 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 570 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 571 572 /* 573 * Variables related to this implementation 574 * of the internet control message protocol version 6. 575 */ 576 struct icmp6errstat { 577 uint64_t icp6errs_dst_unreach_noroute; 578 uint64_t icp6errs_dst_unreach_admin; 579 uint64_t icp6errs_dst_unreach_beyondscope; 580 uint64_t icp6errs_dst_unreach_addr; 581 uint64_t icp6errs_dst_unreach_noport; 582 uint64_t icp6errs_packet_too_big; 583 uint64_t icp6errs_time_exceed_transit; 584 uint64_t icp6errs_time_exceed_reassembly; 585 uint64_t icp6errs_paramprob_header; 586 uint64_t icp6errs_paramprob_nextheader; 587 uint64_t icp6errs_paramprob_option; 588 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 589 uint64_t icp6errs_unknown; 590 }; 591 592 struct icmp6stat { 593 /* statistics related to icmp6 packets generated */ 594 uint64_t icp6s_error; /* # of calls to icmp6_error */ 595 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 596 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 597 uint64_t icp6s_outhist[256]; 598 /* statistics related to input message processed */ 599 uint64_t icp6s_badcode; /* icmp6_code out of range */ 600 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 601 uint64_t icp6s_checksum; /* bad checksum */ 602 uint64_t icp6s_badlen; /* calculated bound mismatch */ 603 /* 604 * number of responses: this member is inherited from netinet code, but 605 * for netinet6 code, it is already available in icp6s_outhist[]. 606 */ 607 uint64_t icp6s_reflect; 608 uint64_t icp6s_inhist[256]; 609 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 610 struct icmp6errstat icp6s_outerrhist; 611 #define icp6s_odst_unreach_noroute \ 612 icp6s_outerrhist.icp6errs_dst_unreach_noroute 613 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 614 #define icp6s_odst_unreach_beyondscope \ 615 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 616 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 617 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 618 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 619 #define icp6s_otime_exceed_transit \ 620 icp6s_outerrhist.icp6errs_time_exceed_transit 621 #define icp6s_otime_exceed_reassembly \ 622 icp6s_outerrhist.icp6errs_time_exceed_reassembly 623 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 624 #define icp6s_oparamprob_nextheader \ 625 icp6s_outerrhist.icp6errs_paramprob_nextheader 626 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 627 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 628 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 629 uint64_t icp6s_pmtuchg; /* path MTU changes */ 630 uint64_t icp6s_nd_badopt; /* bad ND options */ 631 uint64_t icp6s_badns; /* bad neighbor solicitation */ 632 uint64_t icp6s_badna; /* bad neighbor advertisement */ 633 uint64_t icp6s_badrs; /* bad router advertisement */ 634 uint64_t icp6s_badra; /* bad router advertisement */ 635 uint64_t icp6s_badredirect; /* bad redirect message */ 636 }; 637 638 #ifdef _KERNEL 639 #include <sys/counter.h> 640 641 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 642 /* 643 * In-kernel consumers can use these accessor macros directly to update 644 * stats. 645 */ 646 #define ICMP6STAT_ADD(name, val) \ 647 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 648 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 649 650 /* 651 * Kernel module consumers must use this accessor macro. 652 */ 653 void kmod_icmp6stat_inc(int statnum); 654 #define KMOD_ICMP6STAT_INC(name) \ 655 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 656 #endif 657 658 /* 659 * Names for ICMP sysctl objects 660 */ 661 #define ICMPV6CTL_STATS 1 662 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 663 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 664 #if 0 /*obsoleted*/ 665 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 666 #endif 667 #define ICMPV6CTL_ND6_PRUNE 6 668 #define ICMPV6CTL_ND6_DELAY 8 669 #define ICMPV6CTL_ND6_UMAXTRIES 9 670 #define ICMPV6CTL_ND6_MMAXTRIES 10 671 #define ICMPV6CTL_ND6_USELOOPBACK 11 672 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 673 #define ICMPV6CTL_NODEINFO 13 674 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 675 #define ICMPV6CTL_ND6_MAXNUDHINT 15 676 #define ICMPV6CTL_MTUDISC_HIWAT 16 677 #define ICMPV6CTL_MTUDISC_LOWAT 17 678 #define ICMPV6CTL_ND6_DEBUG 18 679 #define ICMPV6CTL_ND6_DRLIST 19 680 #define ICMPV6CTL_ND6_PRLIST 20 681 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 682 #define ICMPV6CTL_MLD_SOMAXSRC 22 683 #define ICMPV6CTL_MLD_VERSION 23 684 #define ICMPV6CTL_ND6_MAXQLEN 24 685 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 686 #define ICMPV6CTL_MAXID 26 687 688 #define RTF_PROBEMTU RTF_PROTO1 689 690 #ifdef _KERNEL 691 # ifdef __STDC__ 692 struct rtentry; 693 struct rttimer; 694 struct in6_multi; 695 # endif 696 void icmp6_paramerror(struct mbuf *, int); 697 void icmp6_error(struct mbuf *, int, int, int); 698 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 699 int icmp6_input(struct mbuf **, int *, int); 700 void icmp6_fasttimo(void); 701 void icmp6_slowtimo(void); 702 void icmp6_reflect(struct mbuf *, size_t); 703 void icmp6_prepare(struct mbuf *); 704 void icmp6_redirect_input(struct mbuf *, int); 705 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 706 707 struct ip6ctlparam; 708 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 709 710 /* XXX: is this the right place for these macros? */ 711 #define icmp6_ifstat_inc(ifp, tag) \ 712 do { \ 713 if (ifp) \ 714 counter_u64_add(((struct in6_ifextra *) \ 715 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 716 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 717 } while (/*CONSTCOND*/ 0) 718 719 #define icmp6_ifoutstat_inc(ifp, type, code) \ 720 do { \ 721 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 722 if (type < ICMP6_INFOMSG_MASK) \ 723 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 724 switch (type) { \ 725 case ICMP6_DST_UNREACH: \ 726 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 727 if (code == ICMP6_DST_UNREACH_ADMIN) \ 728 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 729 break; \ 730 case ICMP6_PACKET_TOO_BIG: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 732 break; \ 733 case ICMP6_TIME_EXCEEDED: \ 734 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 735 break; \ 736 case ICMP6_PARAM_PROB: \ 737 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 738 break; \ 739 case ICMP6_ECHO_REQUEST: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 741 break; \ 742 case ICMP6_ECHO_REPLY: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 744 break; \ 745 case MLD_LISTENER_QUERY: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 747 break; \ 748 case MLD_LISTENER_REPORT: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 750 break; \ 751 case MLD_LISTENER_DONE: \ 752 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 753 break; \ 754 case ND_ROUTER_SOLICIT: \ 755 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 756 break; \ 757 case ND_ROUTER_ADVERT: \ 758 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 759 break; \ 760 case ND_NEIGHBOR_SOLICIT: \ 761 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 762 break; \ 763 case ND_NEIGHBOR_ADVERT: \ 764 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 765 break; \ 766 case ND_REDIRECT: \ 767 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 768 break; \ 769 } \ 770 } while (/*CONSTCOND*/ 0) 771 772 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 773 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 774 775 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 776 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 777 778 #define ICMP6_NODEINFO_FQDNOK 0x1 779 #define ICMP6_NODEINFO_NODEADDROK 0x2 780 #define ICMP6_NODEINFO_TMPADDROK 0x4 781 #define ICMP6_NODEINFO_GLOBALOK 0x8 782 #endif /* _KERNEL */ 783 784 #endif /* not _NETINET_ICMP6_H_ */ 785