1 /* $FreeBSD: src/sys/netinet/icmp6.h,v 1.2.2.5 2002/06/29 18:31:11 ume Exp $ */ 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 #ifndef _SYS_TYPES_H_ 68 #include <sys/types.h> 69 #endif 70 #ifndef _NETINET6_IN6_H_ 71 #include <netinet/in.h> 72 #endif 73 #include <machine/endian.h> 74 75 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 76 - sizeof(struct icmp6_hdr) */ 77 78 struct icmp6_hdr { 79 u_int8_t icmp6_type; /* type field */ 80 u_int8_t icmp6_code; /* code field */ 81 u_int16_t icmp6_cksum; /* checksum field */ 82 union { 83 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 84 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 85 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 86 } icmp6_dataun; 87 } __attribute__((__packed__)); 88 89 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 90 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 91 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 92 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 93 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 94 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 95 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 96 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 97 98 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 99 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 100 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 101 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 102 103 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 104 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 105 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 106 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 107 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 108 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 109 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 110 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 111 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */ 112 113 #ifndef _KERNEL 114 /* the followings are for backward compatibility to old KAME apps. */ 115 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 116 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 117 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 118 #endif 119 120 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 121 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 122 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 123 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 124 #define ND_REDIRECT 137 /* redirect */ 125 126 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 127 128 #define ICMP6_WRUREQUEST 139 /* who are you request */ 129 #define ICMP6_WRUREPLY 140 /* who are you reply */ 130 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 131 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 132 #define ICMP6_NI_QUERY 139 /* node information request */ 133 #define ICMP6_NI_REPLY 140 /* node information reply */ 134 135 /* The definitions below are experimental. TBA */ 136 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 137 #define MLD_MTRACE 201 /* mtrace messages */ 138 139 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 140 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 141 142 #ifndef _KERNEL 143 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 144 #define MLD6_MTRACE MLD_MTRACE 145 #endif 146 147 #define ICMP6_MAXTYPE 203 148 149 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 150 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 151 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 152 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 153 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 154 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 155 156 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 157 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 158 159 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 160 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 161 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 162 163 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 164 165 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 166 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 167 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 168 169 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 170 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 171 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 172 173 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 174 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 175 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 176 177 /* Used in kernel only */ 178 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 179 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 180 181 /* 182 * Multicast Listener Discovery 183 */ 184 struct mld_hdr { 185 struct icmp6_hdr mld_icmp6_hdr; 186 struct in6_addr mld_addr; /* multicast address */ 187 } __attribute__((__packed__)); 188 189 /* definitions to provide backward compatibility to old KAME applications */ 190 #ifndef _KERNEL 191 #define mld6_hdr mld_hdr 192 #define mld6_type mld_type 193 #define mld6_code mld_code 194 #define mld6_cksum mld_cksum 195 #define mld6_maxdelay mld_maxdelay 196 #define mld6_reserved mld_reserved 197 #define mld6_addr mld_addr 198 #endif 199 200 /* shortcut macro definitions */ 201 #define mld_type mld_icmp6_hdr.icmp6_type 202 #define mld_code mld_icmp6_hdr.icmp6_code 203 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 204 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 205 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 206 207 /* 208 * Neighbor Discovery 209 */ 210 211 struct nd_router_solicit { /* router solicitation */ 212 struct icmp6_hdr nd_rs_hdr; 213 /* could be followed by options */ 214 } __attribute__((__packed__)); 215 216 #define nd_rs_type nd_rs_hdr.icmp6_type 217 #define nd_rs_code nd_rs_hdr.icmp6_code 218 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 219 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 220 221 struct nd_router_advert { /* router advertisement */ 222 struct icmp6_hdr nd_ra_hdr; 223 u_int32_t nd_ra_reachable; /* reachable time */ 224 u_int32_t nd_ra_retransmit; /* retransmit timer */ 225 /* could be followed by options */ 226 } __attribute__((__packed__)); 227 228 #define nd_ra_type nd_ra_hdr.icmp6_type 229 #define nd_ra_code nd_ra_hdr.icmp6_code 230 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 231 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 232 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 233 #define ND_RA_FLAG_MANAGED 0x80 234 #define ND_RA_FLAG_OTHER 0x40 235 #define ND_RA_FLAG_HA 0x20 236 237 /* 238 * Router preference values based on draft-draves-ipngwg-router-selection-01. 239 * These are non-standard definitions. 240 */ 241 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 242 243 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 244 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 245 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 246 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 247 248 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 249 250 struct nd_neighbor_solicit { /* neighbor solicitation */ 251 struct icmp6_hdr nd_ns_hdr; 252 struct in6_addr nd_ns_target; /*target address */ 253 /* could be followed by options */ 254 } __attribute__((__packed__)); 255 256 #define nd_ns_type nd_ns_hdr.icmp6_type 257 #define nd_ns_code nd_ns_hdr.icmp6_code 258 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 259 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 260 261 struct nd_neighbor_advert { /* neighbor advertisement */ 262 struct icmp6_hdr nd_na_hdr; 263 struct in6_addr nd_na_target; /* target address */ 264 /* could be followed by options */ 265 } __attribute__((__packed__)); 266 267 #define nd_na_type nd_na_hdr.icmp6_type 268 #define nd_na_code nd_na_hdr.icmp6_code 269 #define nd_na_cksum nd_na_hdr.icmp6_cksum 270 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 271 #if _BYTE_ORDER == _BIG_ENDIAN 272 #define ND_NA_FLAG_ROUTER 0x80000000 273 #define ND_NA_FLAG_SOLICITED 0x40000000 274 #define ND_NA_FLAG_OVERRIDE 0x20000000 275 #elif _BYTE_ORDER == _LITTLE_ENDIAN 276 #define ND_NA_FLAG_ROUTER 0x80 277 #define ND_NA_FLAG_SOLICITED 0x40 278 #define ND_NA_FLAG_OVERRIDE 0x20 279 #else 280 #error "Byte order not implemented" 281 #endif 282 283 struct nd_redirect { /* redirect */ 284 struct icmp6_hdr nd_rd_hdr; 285 struct in6_addr nd_rd_target; /* target address */ 286 struct in6_addr nd_rd_dst; /* destination address */ 287 /* could be followed by options */ 288 } __attribute__((__packed__)); 289 290 #define nd_rd_type nd_rd_hdr.icmp6_type 291 #define nd_rd_code nd_rd_hdr.icmp6_code 292 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 293 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 294 295 struct nd_opt_hdr { /* Neighbor discovery option header */ 296 u_int8_t nd_opt_type; 297 u_int8_t nd_opt_len; 298 /* followed by option specific data*/ 299 } __attribute__((__packed__)); 300 301 #define ND_OPT_SOURCE_LINKADDR 1 302 #define ND_OPT_TARGET_LINKADDR 2 303 #define ND_OPT_PREFIX_INFORMATION 3 304 #define ND_OPT_REDIRECTED_HEADER 4 305 #define ND_OPT_MTU 5 306 307 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 308 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 309 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 310 #define ND_OPT_MAX 31 311 312 313 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 } __attribute__((__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 } __attribute__((__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 } __attribute__((__packed__)); 341 342 struct nd_opt_route_info { /* route info */ 343 u_int8_t nd_opt_rti_type; 344 u_int8_t nd_opt_rti_len; 345 u_int8_t nd_opt_rti_prefixlen; 346 u_int8_t nd_opt_rti_flags; 347 u_int32_t nd_opt_rti_lifetime; 348 /* prefix follows */ 349 } __attribute__((__packed__)); 350 351 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 352 u_int8_t nd_opt_rdnss_type; 353 u_int8_t nd_opt_rdnss_len; 354 u_int16_t nd_opt_rdnss_reserved; 355 u_int32_t nd_opt_rdnss_lifetime; 356 /* followed by list of recursive DNS servers */ 357 } __attribute__((__packed__)); 358 359 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 360 u_int8_t nd_opt_dnssl_type; 361 u_int8_t nd_opt_dnssl_len; 362 u_int16_t nd_opt_dnssl_reserved; 363 u_int32_t nd_opt_dnssl_lifetime; 364 /* followed by list of DNS search domains */ 365 } __attribute__((__packed__)); 366 367 /* 368 * icmp6 namelookup 369 */ 370 371 struct icmp6_namelookup { 372 struct icmp6_hdr icmp6_nl_hdr; 373 u_int8_t icmp6_nl_nonce[8]; 374 int32_t icmp6_nl_ttl; 375 #if 0 376 u_int8_t icmp6_nl_len; 377 u_int8_t icmp6_nl_name[3]; 378 #endif 379 /* could be followed by options */ 380 } __attribute__((__packed__)); 381 382 /* 383 * icmp6 node information 384 */ 385 struct icmp6_nodeinfo { 386 struct icmp6_hdr icmp6_ni_hdr; 387 u_int8_t icmp6_ni_nonce[8]; 388 /* could be followed by reply data */ 389 } __attribute__((__packed__)); 390 391 #define ni_type icmp6_ni_hdr.icmp6_type 392 #define ni_code icmp6_ni_hdr.icmp6_code 393 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 394 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 395 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 396 397 #define NI_QTYPE_NOOP 0 /* NOOP */ 398 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 399 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 400 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 401 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 402 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 403 404 #if _BYTE_ORDER == _BIG_ENDIAN 405 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 406 #define NI_FQDN_FLAG_VALIDTTL 0x1 407 #elif _BYTE_ORDER == _LITTLE_ENDIAN 408 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 409 #define NI_FQDN_FLAG_VALIDTTL 0x0100 410 #else 411 #error "Byte order not implemented" 412 #endif 413 414 #ifdef NAME_LOOKUPS_04 415 #if _BYTE_ORDER == _BIG_ENDIAN 416 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 417 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 418 #define NI_NODEADDR_FLAG_GLOBAL 0x4 419 #define NI_NODEADDR_FLAG_ALL 0x8 420 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 421 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 422 #elif _BYTE_ORDER == _LITTLE_ENDIAN 423 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 424 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 425 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 426 #define NI_NODEADDR_FLAG_ALL 0x0800 427 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 428 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 429 #else 430 #error "Byte order not implemented" 431 #endif 432 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 433 #if _BYTE_ORDER == _BIG_ENDIAN 434 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 435 #define NI_NODEADDR_FLAG_ALL 0x2 436 #define NI_NODEADDR_FLAG_COMPAT 0x4 437 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 438 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 439 #define NI_NODEADDR_FLAG_GLOBAL 0x20 440 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 441 #elif _BYTE_ORDER == _LITTLE_ENDIAN 442 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 443 #define NI_NODEADDR_FLAG_ALL 0x0200 444 #define NI_NODEADDR_FLAG_COMPAT 0x0400 445 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 446 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 447 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 448 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 449 #else 450 #error "Byte order not implemented" 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 } __attribute__((__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 } __attribute__((__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 } __attribute__((__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 } __attribute__((__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 #else 518 #error "Byte order not implemented" 519 #endif 520 521 struct rr_result { /* router renumbering result message */ 522 u_int16_t rrr_flags; 523 u_int8_t rrr_ordinal; 524 u_int8_t rrr_matchedlen; 525 u_int32_t rrr_ifid; 526 struct in6_addr rrr_prefix; 527 } __attribute__((__packed__)); 528 #if _BYTE_ORDER == _BIG_ENDIAN 529 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 530 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 531 #elif _BYTE_ORDER == _LITTLE_ENDIAN 532 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 533 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 534 #else 535 #error "Byte order not implemented" 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 (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 u_quad_t icp6errs_dst_unreach_noroute; 578 u_quad_t icp6errs_dst_unreach_admin; 579 u_quad_t icp6errs_dst_unreach_beyondscope; 580 u_quad_t icp6errs_dst_unreach_addr; 581 u_quad_t icp6errs_dst_unreach_noport; 582 u_quad_t icp6errs_packet_too_big; 583 u_quad_t icp6errs_time_exceed_transit; 584 u_quad_t icp6errs_time_exceed_reassembly; 585 u_quad_t icp6errs_paramprob_header; 586 u_quad_t icp6errs_paramprob_nextheader; 587 u_quad_t icp6errs_paramprob_option; 588 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 589 u_quad_t icp6errs_unknown; 590 }; 591 592 struct icmp6stat { 593 /* statistics related to icmp6 packets generated */ 594 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 595 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 596 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 597 u_quad_t icp6s_outhist[256]; 598 /* statistics related to input message processed */ 599 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 600 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 601 u_quad_t icp6s_checksum; /* bad checksum */ 602 u_quad_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 u_quad_t icp6s_reflect; 608 u_quad_t icp6s_inhist[256]; 609 u_quad_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 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 630 u_quad_t icp6s_nd_badopt; /* bad ND options */ 631 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 632 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 633 u_quad_t icp6s_badrs; /* bad router advertisement */ 634 u_quad_t icp6s_badra; /* bad router advertisement */ 635 u_quad_t icp6s_badredirect; /* bad redirect message */ 636 }; 637 638 /* 639 * Names for ICMP sysctl objects 640 */ 641 #define ICMPV6CTL_STATS 1 642 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 643 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 644 #if 0 /*obsoleted*/ 645 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 646 #endif 647 #define ICMPV6CTL_ND6_PRUNE 6 648 #define ICMPV6CTL_ND6_DELAY 8 649 #define ICMPV6CTL_ND6_UMAXTRIES 9 650 #define ICMPV6CTL_ND6_MMAXTRIES 10 651 #define ICMPV6CTL_ND6_USELOOPBACK 11 652 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 653 #define ICMPV6CTL_NODEINFO 13 654 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 655 #define ICMPV6CTL_ND6_MAXNUDHINT 15 656 #define ICMPV6CTL_MTUDISC_HIWAT 16 657 #define ICMPV6CTL_MTUDISC_LOWAT 17 658 #define ICMPV6CTL_ND6_DEBUG 18 659 #define ICMPV6CTL_ND6_DRLIST 19 660 #define ICMPV6CTL_ND6_PRLIST 20 661 #define ICMPV6CTL_MAXID 21 662 663 #define ICMPV6CTL_NAMES { \ 664 { 0, 0 }, \ 665 { 0, 0 }, \ 666 { "rediraccept", CTLTYPE_INT }, \ 667 { "redirtimeout", CTLTYPE_INT }, \ 668 { 0, 0 }, \ 669 { 0, 0 }, \ 670 { "nd6_prune", CTLTYPE_INT }, \ 671 { 0, 0 }, \ 672 { "nd6_delay", CTLTYPE_INT }, \ 673 { "nd6_umaxtries", CTLTYPE_INT }, \ 674 { "nd6_mmaxtries", CTLTYPE_INT }, \ 675 { "nd6_useloopback", CTLTYPE_INT }, \ 676 { 0, 0 }, \ 677 { "nodeinfo", CTLTYPE_INT }, \ 678 { "errppslimit", CTLTYPE_INT }, \ 679 { "nd6_maxnudhint", CTLTYPE_INT }, \ 680 { "mtudisc_hiwat", CTLTYPE_INT }, \ 681 { "mtudisc_lowat", CTLTYPE_INT }, \ 682 { "nd6_debug", CTLTYPE_INT }, \ 683 { 0, 0 }, \ 684 { 0, 0 }, \ 685 } 686 687 #define RTF_PROBEMTU RTF_PROTO1 688 689 #ifdef _KERNEL 690 struct rtentry; 691 struct rttimer; 692 struct in6_multi; 693 694 void icmp6_init (void); 695 void icmp6_paramerror (struct mbuf *, int); 696 void icmp6_error (struct mbuf *, int, int, int); 697 int icmp6_input (struct mbuf **, int *, int); 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 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 711 } while (0) 712 713 #define icmp6_ifoutstat_inc(ifp, type, code) \ 714 do { \ 715 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 716 if (type < ICMP6_INFOMSG_MASK) \ 717 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 718 switch (type) { \ 719 case ICMP6_DST_UNREACH: \ 720 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 721 if (code == ICMP6_DST_UNREACH_ADMIN) \ 722 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 723 break; \ 724 case ICMP6_PACKET_TOO_BIG: \ 725 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 726 break; \ 727 case ICMP6_TIME_EXCEEDED: \ 728 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 729 break; \ 730 case ICMP6_PARAM_PROB: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 732 break; \ 733 case ICMP6_ECHO_REQUEST: \ 734 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 735 break; \ 736 case ICMP6_ECHO_REPLY: \ 737 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 738 break; \ 739 case MLD_LISTENER_QUERY: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 741 break; \ 742 case MLD_LISTENER_REPORT: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 744 break; \ 745 case MLD_LISTENER_DONE: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 747 break; \ 748 case ND_ROUTER_SOLICIT: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 750 break; \ 751 case ND_ROUTER_ADVERT: \ 752 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 753 break; \ 754 case ND_NEIGHBOR_SOLICIT: \ 755 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 756 break; \ 757 case ND_NEIGHBOR_ADVERT: \ 758 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 759 break; \ 760 case ND_REDIRECT: \ 761 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 762 break; \ 763 } \ 764 } while (0) 765 766 extern int icmp6_rediraccept; /* accept/process redirects */ 767 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 768 #endif /* _KERNEL */ 769 770 #endif /* not _NETINET_ICMP6_H_ */ 771