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. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifndef _NETINET_ICMP6_H_ 69 #define _NETINET_ICMP6_H_ 70 71 #ifndef _SYS_TYPES_H_ 72 #include <sys/types.h> 73 #endif 74 #ifndef _NETINET6_IN6_H_ 75 #include <netinet/in.h> 76 #endif 77 #include <machine/endian.h> 78 79 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 80 - sizeof(struct icmp6_hdr) */ 81 82 struct icmp6_hdr { 83 u_int8_t icmp6_type; /* type field */ 84 u_int8_t icmp6_code; /* code field */ 85 u_int16_t icmp6_cksum; /* checksum field */ 86 union { 87 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 88 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 89 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 90 } icmp6_dataun; 91 } __attribute__((__packed__)); 92 93 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 94 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 95 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 96 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 97 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 98 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 99 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 100 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 101 102 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 103 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 104 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 105 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 106 107 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 108 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 109 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 110 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 111 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 112 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 113 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 114 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 115 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */ 116 117 #ifndef _KERNEL 118 /* the followings are for backward compatibility to old KAME apps. */ 119 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 120 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 121 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 122 #endif 123 124 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 125 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 126 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 127 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 128 #define ND_REDIRECT 137 /* redirect */ 129 130 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 131 132 #define ICMP6_WRUREQUEST 139 /* who are you request */ 133 #define ICMP6_WRUREPLY 140 /* who are you reply */ 134 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 135 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 136 #define ICMP6_NI_QUERY 139 /* node information request */ 137 #define ICMP6_NI_REPLY 140 /* node information reply */ 138 139 /* The definitions below are experimental. TBA */ 140 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 141 #define MLD_MTRACE 201 /* mtrace messages */ 142 143 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 144 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 145 146 #ifndef _KERNEL 147 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 148 #define MLD6_MTRACE MLD_MTRACE 149 #endif 150 151 #define ICMP6_MAXTYPE 203 152 153 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 154 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 155 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 156 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 157 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 158 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 159 160 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 161 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 162 163 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 164 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 165 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 166 167 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 168 169 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 170 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 171 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 172 173 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 174 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 175 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 176 177 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 178 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 179 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 180 181 /* Used in kernel only */ 182 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 183 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 184 185 /* 186 * Multicast Listener Discovery 187 */ 188 struct mld_hdr { 189 struct icmp6_hdr mld_icmp6_hdr; 190 struct in6_addr mld_addr; /* multicast address */ 191 } __attribute__((__packed__)); 192 193 /* definitions to provide backward compatibility to old KAME applications */ 194 #ifndef _KERNEL 195 #define mld6_hdr mld_hdr 196 #define mld6_type mld_type 197 #define mld6_code mld_code 198 #define mld6_cksum mld_cksum 199 #define mld6_maxdelay mld_maxdelay 200 #define mld6_reserved mld_reserved 201 #define mld6_addr mld_addr 202 #endif 203 204 /* shortcut macro definitions */ 205 #define mld_type mld_icmp6_hdr.icmp6_type 206 #define mld_code mld_icmp6_hdr.icmp6_code 207 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 208 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 209 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 210 211 /* 212 * Neighbor Discovery 213 */ 214 215 struct nd_router_solicit { /* router solicitation */ 216 struct icmp6_hdr nd_rs_hdr; 217 /* could be followed by options */ 218 } __attribute__((__packed__)); 219 220 #define nd_rs_type nd_rs_hdr.icmp6_type 221 #define nd_rs_code nd_rs_hdr.icmp6_code 222 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 223 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 224 225 struct nd_router_advert { /* router advertisement */ 226 struct icmp6_hdr nd_ra_hdr; 227 u_int32_t nd_ra_reachable; /* reachable time */ 228 u_int32_t nd_ra_retransmit; /* retransmit timer */ 229 /* could be followed by options */ 230 } __attribute__((__packed__)); 231 232 #define nd_ra_type nd_ra_hdr.icmp6_type 233 #define nd_ra_code nd_ra_hdr.icmp6_code 234 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 235 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 236 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 237 #define ND_RA_FLAG_MANAGED 0x80 238 #define ND_RA_FLAG_OTHER 0x40 239 #define ND_RA_FLAG_HA 0x20 240 241 /* 242 * Router preference values based on draft-draves-ipngwg-router-selection-01. 243 * These are non-standard definitions. 244 */ 245 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 246 247 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 248 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 249 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 250 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 251 252 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 253 254 struct nd_neighbor_solicit { /* neighbor solicitation */ 255 struct icmp6_hdr nd_ns_hdr; 256 struct in6_addr nd_ns_target; /*target address */ 257 /* could be followed by options */ 258 } __attribute__((__packed__)); 259 260 #define nd_ns_type nd_ns_hdr.icmp6_type 261 #define nd_ns_code nd_ns_hdr.icmp6_code 262 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 263 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 264 265 struct nd_neighbor_advert { /* neighbor advertisement */ 266 struct icmp6_hdr nd_na_hdr; 267 struct in6_addr nd_na_target; /* target address */ 268 /* could be followed by options */ 269 } __attribute__((__packed__)); 270 271 #define nd_na_type nd_na_hdr.icmp6_type 272 #define nd_na_code nd_na_hdr.icmp6_code 273 #define nd_na_cksum nd_na_hdr.icmp6_cksum 274 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 275 #if _BYTE_ORDER == _BIG_ENDIAN 276 #define ND_NA_FLAG_ROUTER 0x80000000 277 #define ND_NA_FLAG_SOLICITED 0x40000000 278 #define ND_NA_FLAG_OVERRIDE 0x20000000 279 #elif _BYTE_ORDER == _LITTLE_ENDIAN 280 #define ND_NA_FLAG_ROUTER 0x80 281 #define ND_NA_FLAG_SOLICITED 0x40 282 #define ND_NA_FLAG_OVERRIDE 0x20 283 #else 284 #error "Byte order not implemented" 285 #endif 286 287 struct nd_redirect { /* redirect */ 288 struct icmp6_hdr nd_rd_hdr; 289 struct in6_addr nd_rd_target; /* target address */ 290 struct in6_addr nd_rd_dst; /* destination address */ 291 /* could be followed by options */ 292 } __attribute__((__packed__)); 293 294 #define nd_rd_type nd_rd_hdr.icmp6_type 295 #define nd_rd_code nd_rd_hdr.icmp6_code 296 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 297 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 298 299 struct nd_opt_hdr { /* Neighbor discovery option header */ 300 u_int8_t nd_opt_type; 301 u_int8_t nd_opt_len; 302 /* followed by option specific data*/ 303 } __attribute__((__packed__)); 304 305 #define ND_OPT_SOURCE_LINKADDR 1 306 #define ND_OPT_TARGET_LINKADDR 2 307 #define ND_OPT_PREFIX_INFORMATION 3 308 #define ND_OPT_REDIRECTED_HEADER 4 309 #define ND_OPT_MTU 5 310 311 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 312 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 313 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 314 #define ND_OPT_MAX 31 315 316 317 struct nd_opt_prefix_info { /* prefix information */ 318 u_int8_t nd_opt_pi_type; 319 u_int8_t nd_opt_pi_len; 320 u_int8_t nd_opt_pi_prefix_len; 321 u_int8_t nd_opt_pi_flags_reserved; 322 u_int32_t nd_opt_pi_valid_time; 323 u_int32_t nd_opt_pi_preferred_time; 324 u_int32_t nd_opt_pi_reserved2; 325 struct in6_addr nd_opt_pi_prefix; 326 } __attribute__((__packed__)); 327 328 #define ND_OPT_PI_FLAG_ONLINK 0x80 329 #define ND_OPT_PI_FLAG_AUTO 0x40 330 331 struct nd_opt_rd_hdr { /* redirected header */ 332 u_int8_t nd_opt_rh_type; 333 u_int8_t nd_opt_rh_len; 334 u_int16_t nd_opt_rh_reserved1; 335 u_int32_t nd_opt_rh_reserved2; 336 /* followed by IP header and data */ 337 } __attribute__((__packed__)); 338 339 struct nd_opt_mtu { /* MTU option */ 340 u_int8_t nd_opt_mtu_type; 341 u_int8_t nd_opt_mtu_len; 342 u_int16_t nd_opt_mtu_reserved; 343 u_int32_t nd_opt_mtu_mtu; 344 } __attribute__((__packed__)); 345 346 struct nd_opt_route_info { /* route info */ 347 u_int8_t nd_opt_rti_type; 348 u_int8_t nd_opt_rti_len; 349 u_int8_t nd_opt_rti_prefixlen; 350 u_int8_t nd_opt_rti_flags; 351 u_int32_t nd_opt_rti_lifetime; 352 /* prefix follows */ 353 } __attribute__((__packed__)); 354 355 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 356 u_int8_t nd_opt_rdnss_type; 357 u_int8_t nd_opt_rdnss_len; 358 u_int16_t nd_opt_rdnss_reserved; 359 u_int32_t nd_opt_rdnss_lifetime; 360 /* followed by list of recursive DNS servers */ 361 } __attribute__((__packed__)); 362 363 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 364 u_int8_t nd_opt_dnssl_type; 365 u_int8_t nd_opt_dnssl_len; 366 u_int16_t nd_opt_dnssl_reserved; 367 u_int32_t nd_opt_dnssl_lifetime; 368 /* followed by list of DNS search domains */ 369 } __attribute__((__packed__)); 370 371 /* 372 * icmp6 namelookup 373 */ 374 375 struct icmp6_namelookup { 376 struct icmp6_hdr icmp6_nl_hdr; 377 u_int8_t icmp6_nl_nonce[8]; 378 int32_t icmp6_nl_ttl; 379 #if 0 380 u_int8_t icmp6_nl_len; 381 u_int8_t icmp6_nl_name[3]; 382 #endif 383 /* could be followed by options */ 384 } __attribute__((__packed__)); 385 386 /* 387 * icmp6 node information 388 */ 389 struct icmp6_nodeinfo { 390 struct icmp6_hdr icmp6_ni_hdr; 391 u_int8_t icmp6_ni_nonce[8]; 392 /* could be followed by reply data */ 393 } __attribute__((__packed__)); 394 395 #define ni_type icmp6_ni_hdr.icmp6_type 396 #define ni_code icmp6_ni_hdr.icmp6_code 397 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 398 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 399 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 400 401 #define NI_QTYPE_NOOP 0 /* NOOP */ 402 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 403 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 404 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 405 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 406 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 407 408 #if _BYTE_ORDER == _BIG_ENDIAN 409 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 410 #define NI_FQDN_FLAG_VALIDTTL 0x1 411 #elif _BYTE_ORDER == _LITTLE_ENDIAN 412 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 413 #define NI_FQDN_FLAG_VALIDTTL 0x0100 414 #else 415 #error "Byte order not implemented" 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 #else 434 #error "Byte order not implemented" 435 #endif 436 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 437 #if _BYTE_ORDER == _BIG_ENDIAN 438 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 439 #define NI_NODEADDR_FLAG_ALL 0x2 440 #define NI_NODEADDR_FLAG_COMPAT 0x4 441 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 442 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 443 #define NI_NODEADDR_FLAG_GLOBAL 0x20 444 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 445 #elif _BYTE_ORDER == _LITTLE_ENDIAN 446 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 447 #define NI_NODEADDR_FLAG_ALL 0x0200 448 #define NI_NODEADDR_FLAG_COMPAT 0x0400 449 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 450 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 451 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 452 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 453 #else 454 #error "Byte order not implemented" 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 } __attribute__((__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 } __attribute__((__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 } __attribute__((__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 } __attribute__((__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 #else 522 #error "Byte order not implemented" 523 #endif 524 525 struct rr_result { /* router renumbering result message */ 526 u_int16_t rrr_flags; 527 u_int8_t rrr_ordinal; 528 u_int8_t rrr_matchedlen; 529 u_int32_t rrr_ifid; 530 struct in6_addr rrr_prefix; 531 } __attribute__((__packed__)); 532 #if _BYTE_ORDER == _BIG_ENDIAN 533 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 534 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 535 #elif _BYTE_ORDER == _LITTLE_ENDIAN 536 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 537 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 538 #else 539 #error "Byte order not implemented" 540 #endif 541 542 /* 543 * icmp6 filter structures. 544 */ 545 546 struct icmp6_filter { 547 u_int32_t icmp6_filt[8]; 548 }; 549 550 #ifdef _KERNEL 551 #define ICMP6_FILTER_SETPASSALL(filterp) \ 552 do { \ 553 int i; u_char *p; \ 554 p = (u_char *)filterp; \ 555 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 556 p[i] = 0xff; \ 557 } while (0) 558 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 559 bzero(filterp, sizeof(struct icmp6_filter)) 560 #else /* _KERNEL */ 561 #define ICMP6_FILTER_SETPASSALL(filterp) \ 562 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 563 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 564 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 565 #endif /* _KERNEL */ 566 567 #define ICMP6_FILTER_SETPASS(type, filterp) \ 568 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 569 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 570 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 571 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 572 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 573 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 574 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 575 576 /* 577 * Variables related to this implementation 578 * of the internet control message protocol version 6. 579 */ 580 struct icmp6errstat { 581 u_quad_t icp6errs_dst_unreach_noroute; 582 u_quad_t icp6errs_dst_unreach_admin; 583 u_quad_t icp6errs_dst_unreach_beyondscope; 584 u_quad_t icp6errs_dst_unreach_addr; 585 u_quad_t icp6errs_dst_unreach_noport; 586 u_quad_t icp6errs_packet_too_big; 587 u_quad_t icp6errs_time_exceed_transit; 588 u_quad_t icp6errs_time_exceed_reassembly; 589 u_quad_t icp6errs_paramprob_header; 590 u_quad_t icp6errs_paramprob_nextheader; 591 u_quad_t icp6errs_paramprob_option; 592 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 593 u_quad_t icp6errs_unknown; 594 }; 595 596 struct icmp6stat { 597 /* statistics related to icmp6 packets generated */ 598 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 599 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 600 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 601 u_quad_t icp6s_outhist[256]; 602 /* statistics related to input message processed */ 603 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 604 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 605 u_quad_t icp6s_checksum; /* bad checksum */ 606 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 607 /* 608 * number of responses: this member is inherited from netinet code, but 609 * for netinet6 code, it is already available in icp6s_outhist[]. 610 */ 611 u_quad_t icp6s_reflect; 612 u_quad_t icp6s_inhist[256]; 613 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 614 struct icmp6errstat icp6s_outerrhist; 615 #define icp6s_odst_unreach_noroute \ 616 icp6s_outerrhist.icp6errs_dst_unreach_noroute 617 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 618 #define icp6s_odst_unreach_beyondscope \ 619 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 620 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 621 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 622 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 623 #define icp6s_otime_exceed_transit \ 624 icp6s_outerrhist.icp6errs_time_exceed_transit 625 #define icp6s_otime_exceed_reassembly \ 626 icp6s_outerrhist.icp6errs_time_exceed_reassembly 627 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 628 #define icp6s_oparamprob_nextheader \ 629 icp6s_outerrhist.icp6errs_paramprob_nextheader 630 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 631 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 632 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 633 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 634 u_quad_t icp6s_nd_badopt; /* bad ND options */ 635 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 636 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 637 u_quad_t icp6s_badrs; /* bad router advertisement */ 638 u_quad_t icp6s_badra; /* bad router advertisement */ 639 u_quad_t icp6s_badredirect; /* bad redirect message */ 640 }; 641 642 /* 643 * Names for ICMP sysctl objects 644 */ 645 #define ICMPV6CTL_STATS 1 646 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 647 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 648 #if 0 /*obsoleted*/ 649 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 650 #endif 651 #define ICMPV6CTL_ND6_PRUNE 6 652 #define ICMPV6CTL_ND6_DELAY 8 653 #define ICMPV6CTL_ND6_UMAXTRIES 9 654 #define ICMPV6CTL_ND6_MMAXTRIES 10 655 #define ICMPV6CTL_ND6_USELOOPBACK 11 656 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 657 #define ICMPV6CTL_NODEINFO 13 658 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 659 #define ICMPV6CTL_ND6_MAXNUDHINT 15 660 #define ICMPV6CTL_MTUDISC_HIWAT 16 661 #define ICMPV6CTL_MTUDISC_LOWAT 17 662 #define ICMPV6CTL_ND6_DEBUG 18 663 #define ICMPV6CTL_ND6_DRLIST 19 664 #define ICMPV6CTL_ND6_PRLIST 20 665 #define ICMPV6CTL_MAXID 21 666 667 #define ICMPV6CTL_NAMES { \ 668 { 0, 0 }, \ 669 { 0, 0 }, \ 670 { "rediraccept", CTLTYPE_INT }, \ 671 { "redirtimeout", CTLTYPE_INT }, \ 672 { 0, 0 }, \ 673 { 0, 0 }, \ 674 { "nd6_prune", CTLTYPE_INT }, \ 675 { 0, 0 }, \ 676 { "nd6_delay", CTLTYPE_INT }, \ 677 { "nd6_umaxtries", CTLTYPE_INT }, \ 678 { "nd6_mmaxtries", CTLTYPE_INT }, \ 679 { "nd6_useloopback", CTLTYPE_INT }, \ 680 { 0, 0 }, \ 681 { "nodeinfo", CTLTYPE_INT }, \ 682 { "errppslimit", CTLTYPE_INT }, \ 683 { "nd6_maxnudhint", CTLTYPE_INT }, \ 684 { "mtudisc_hiwat", CTLTYPE_INT }, \ 685 { "mtudisc_lowat", CTLTYPE_INT }, \ 686 { "nd6_debug", CTLTYPE_INT }, \ 687 { 0, 0 }, \ 688 { 0, 0 }, \ 689 } 690 691 #define RTF_PROBEMTU RTF_PROTO1 692 693 #ifdef _KERNEL 694 struct rtentry; 695 struct rttimer; 696 struct in6_multi; 697 698 void icmp6_init (void); 699 void icmp6_paramerror (struct mbuf *, int); 700 void icmp6_error (struct mbuf *, int, int, int); 701 int icmp6_input (struct mbuf **, int *, int); 702 void icmp6_fasttimo (void); 703 void icmp6_reflect (struct mbuf *, size_t); 704 void icmp6_prepare (struct mbuf *); 705 void icmp6_redirect_input (struct mbuf *, int); 706 void icmp6_redirect_output (struct mbuf *, struct rtentry *); 707 708 struct ip6ctlparam; 709 void icmp6_mtudisc_update (struct ip6ctlparam *, int); 710 711 /* XXX: is this the right place for these macros? */ 712 #define icmp6_ifstat_inc(ifp, tag) \ 713 do { \ 714 if (ifp) \ 715 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 716 } while (0) 717 718 #define icmp6_ifoutstat_inc(ifp, type, code) \ 719 do { \ 720 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 721 if (type < ICMP6_INFOMSG_MASK) \ 722 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 723 switch (type) { \ 724 case ICMP6_DST_UNREACH: \ 725 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 726 if (code == ICMP6_DST_UNREACH_ADMIN) \ 727 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 728 break; \ 729 case ICMP6_PACKET_TOO_BIG: \ 730 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 731 break; \ 732 case ICMP6_TIME_EXCEEDED: \ 733 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 734 break; \ 735 case ICMP6_PARAM_PROB: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 737 break; \ 738 case ICMP6_ECHO_REQUEST: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 740 break; \ 741 case ICMP6_ECHO_REPLY: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 743 break; \ 744 case MLD_LISTENER_QUERY: \ 745 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 746 break; \ 747 case MLD_LISTENER_REPORT: \ 748 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 749 break; \ 750 case MLD_LISTENER_DONE: \ 751 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 752 break; \ 753 case ND_ROUTER_SOLICIT: \ 754 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 755 break; \ 756 case ND_ROUTER_ADVERT: \ 757 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 758 break; \ 759 case ND_NEIGHBOR_SOLICIT: \ 760 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 761 break; \ 762 case ND_NEIGHBOR_ADVERT: \ 763 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 764 break; \ 765 case ND_REDIRECT: \ 766 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 767 break; \ 768 } \ 769 } while (0) 770 771 extern int icmp6_rediraccept; /* accept/process redirects */ 772 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 773 #endif /* _KERNEL */ 774 775 #endif /* not _NETINET_ICMP6_H_ */ 776