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. 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 #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 */ 104 105 /* RFC2292 decls */ 106 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 107 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 108 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 109 110 #ifndef _KERNEL 111 /* the followings are for backward compatibility to old KAME apps. */ 112 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 113 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 114 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 115 #endif 116 117 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 118 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 119 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 120 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 121 #define ND_REDIRECT 137 /* redirect */ 122 123 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 124 125 #define ICMP6_WRUREQUEST 139 /* who are you request */ 126 #define ICMP6_WRUREPLY 140 /* who are you reply */ 127 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 128 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 129 #define ICMP6_NI_QUERY 139 /* node information request */ 130 #define ICMP6_NI_REPLY 140 /* node information reply */ 131 132 /* The definitions below are experimental. TBA */ 133 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 134 #define MLD_MTRACE 201 /* mtrace messages */ 135 136 #ifndef _KERNEL 137 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 138 #define MLD6_MTRACE MLD_MTRACE 139 #endif 140 141 #define ICMP6_MAXTYPE 201 142 143 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 144 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 145 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 146 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 147 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 148 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 149 150 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 151 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 152 153 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 154 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 155 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 156 157 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 158 159 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 160 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 161 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 162 163 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 164 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 165 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 166 167 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 168 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 169 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 170 171 /* Used in kernel only */ 172 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 173 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 174 175 /* 176 * Multicast Listener Discovery 177 */ 178 struct mld_hdr { 179 struct icmp6_hdr mld_icmp6_hdr; 180 struct in6_addr mld_addr; /* multicast address */ 181 } __packed; 182 183 /* definitions to provide backward compatibility to old KAME applications */ 184 #ifndef _KERNEL 185 #define mld6_hdr mld_hdr 186 #define mld6_type mld_type 187 #define mld6_code mld_code 188 #define mld6_cksum mld_cksum 189 #define mld6_maxdelay mld_maxdelay 190 #define mld6_reserved mld_reserved 191 #define mld6_addr mld_addr 192 #endif 193 194 /* shortcut macro definitions */ 195 #define mld_type mld_icmp6_hdr.icmp6_type 196 #define mld_code mld_icmp6_hdr.icmp6_code 197 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 198 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 199 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 200 201 /* 202 * Neighbor Discovery 203 */ 204 205 struct nd_router_solicit { /* router solicitation */ 206 struct icmp6_hdr nd_rs_hdr; 207 /* could be followed by options */ 208 } __packed; 209 210 #define nd_rs_type nd_rs_hdr.icmp6_type 211 #define nd_rs_code nd_rs_hdr.icmp6_code 212 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 213 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 214 215 struct nd_router_advert { /* router advertisement */ 216 struct icmp6_hdr nd_ra_hdr; 217 u_int32_t nd_ra_reachable; /* reachable time */ 218 u_int32_t nd_ra_retransmit; /* retransmit timer */ 219 /* could be followed by options */ 220 } __packed; 221 222 #define nd_ra_type nd_ra_hdr.icmp6_type 223 #define nd_ra_code nd_ra_hdr.icmp6_code 224 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 225 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 226 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 227 #define ND_RA_FLAG_MANAGED 0x80 228 #define ND_RA_FLAG_OTHER 0x40 229 #define ND_RA_FLAG_HA 0x20 230 231 /* 232 * Router preference values based on draft-draves-ipngwg-router-selection-01. 233 * These are non-standard definitions. 234 */ 235 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 236 237 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 238 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 239 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 240 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 241 242 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 243 244 struct nd_neighbor_solicit { /* neighbor solicitation */ 245 struct icmp6_hdr nd_ns_hdr; 246 struct in6_addr nd_ns_target; /*target address */ 247 /* could be followed by options */ 248 } __packed; 249 250 #define nd_ns_type nd_ns_hdr.icmp6_type 251 #define nd_ns_code nd_ns_hdr.icmp6_code 252 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 253 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 254 255 struct nd_neighbor_advert { /* neighbor advertisement */ 256 struct icmp6_hdr nd_na_hdr; 257 struct in6_addr nd_na_target; /* target address */ 258 /* could be followed by options */ 259 } __packed; 260 261 #define nd_na_type nd_na_hdr.icmp6_type 262 #define nd_na_code nd_na_hdr.icmp6_code 263 #define nd_na_cksum nd_na_hdr.icmp6_cksum 264 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 265 #if BYTE_ORDER == BIG_ENDIAN 266 #define ND_NA_FLAG_ROUTER 0x80000000 267 #define ND_NA_FLAG_SOLICITED 0x40000000 268 #define ND_NA_FLAG_OVERRIDE 0x20000000 269 #else 270 #if BYTE_ORDER == LITTLE_ENDIAN 271 #define ND_NA_FLAG_ROUTER 0x80 272 #define ND_NA_FLAG_SOLICITED 0x40 273 #define ND_NA_FLAG_OVERRIDE 0x20 274 #endif 275 #endif 276 277 struct nd_redirect { /* redirect */ 278 struct icmp6_hdr nd_rd_hdr; 279 struct in6_addr nd_rd_target; /* target address */ 280 struct in6_addr nd_rd_dst; /* destination address */ 281 /* could be followed by options */ 282 } __packed; 283 284 #define nd_rd_type nd_rd_hdr.icmp6_type 285 #define nd_rd_code nd_rd_hdr.icmp6_code 286 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 287 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 288 289 struct nd_opt_hdr { /* Neighbor discovery option header */ 290 u_int8_t nd_opt_type; 291 u_int8_t nd_opt_len; 292 /* followed by option specific data*/ 293 } __packed; 294 295 #define ND_OPT_SOURCE_LINKADDR 1 296 #define ND_OPT_TARGET_LINKADDR 2 297 #define ND_OPT_PREFIX_INFORMATION 3 298 #define ND_OPT_REDIRECTED_HEADER 4 299 #define ND_OPT_MTU 5 300 301 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 302 303 struct nd_opt_prefix_info { /* prefix information */ 304 u_int8_t nd_opt_pi_type; 305 u_int8_t nd_opt_pi_len; 306 u_int8_t nd_opt_pi_prefix_len; 307 u_int8_t nd_opt_pi_flags_reserved; 308 u_int32_t nd_opt_pi_valid_time; 309 u_int32_t nd_opt_pi_preferred_time; 310 u_int32_t nd_opt_pi_reserved2; 311 struct in6_addr nd_opt_pi_prefix; 312 } __packed; 313 314 #define ND_OPT_PI_FLAG_ONLINK 0x80 315 #define ND_OPT_PI_FLAG_AUTO 0x40 316 317 struct nd_opt_rd_hdr { /* redirected header */ 318 u_int8_t nd_opt_rh_type; 319 u_int8_t nd_opt_rh_len; 320 u_int16_t nd_opt_rh_reserved1; 321 u_int32_t nd_opt_rh_reserved2; 322 /* followed by IP header and data */ 323 } __packed; 324 325 struct nd_opt_mtu { /* MTU option */ 326 u_int8_t nd_opt_mtu_type; 327 u_int8_t nd_opt_mtu_len; 328 u_int16_t nd_opt_mtu_reserved; 329 u_int32_t nd_opt_mtu_mtu; 330 } __packed; 331 332 struct nd_opt_route_info { /* route info */ 333 u_int8_t nd_opt_rti_type; 334 u_int8_t nd_opt_rti_len; 335 u_int8_t nd_opt_rti_prefixlen; 336 u_int8_t nd_opt_rti_flags; 337 u_int32_t nd_opt_rti_lifetime; 338 /* prefix follows */ 339 } __packed; 340 341 /* 342 * icmp6 namelookup 343 */ 344 345 struct icmp6_namelookup { 346 struct icmp6_hdr icmp6_nl_hdr; 347 u_int8_t icmp6_nl_nonce[8]; 348 int32_t icmp6_nl_ttl; 349 #if 0 350 u_int8_t icmp6_nl_len; 351 u_int8_t icmp6_nl_name[3]; 352 #endif 353 /* could be followed by options */ 354 } __packed; 355 356 /* 357 * icmp6 node information 358 */ 359 struct icmp6_nodeinfo { 360 struct icmp6_hdr icmp6_ni_hdr; 361 u_int8_t icmp6_ni_nonce[8]; 362 /* could be followed by reply data */ 363 } __packed; 364 365 #define ni_type icmp6_ni_hdr.icmp6_type 366 #define ni_code icmp6_ni_hdr.icmp6_code 367 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 368 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 369 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 370 371 #define NI_QTYPE_NOOP 0 /* NOOP */ 372 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 373 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 374 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 375 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 376 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 377 378 #if BYTE_ORDER == BIG_ENDIAN 379 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 380 #define NI_FQDN_FLAG_VALIDTTL 0x1 381 #elif BYTE_ORDER == LITTLE_ENDIAN 382 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 383 #define NI_FQDN_FLAG_VALIDTTL 0x0100 384 #endif 385 386 #ifdef NAME_LOOKUPS_04 387 #if BYTE_ORDER == BIG_ENDIAN 388 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 389 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 390 #define NI_NODEADDR_FLAG_GLOBAL 0x4 391 #define NI_NODEADDR_FLAG_ALL 0x8 392 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 393 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 394 #elif BYTE_ORDER == LITTLE_ENDIAN 395 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 396 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 397 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 398 #define NI_NODEADDR_FLAG_ALL 0x0800 399 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 400 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 401 #endif 402 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 403 #if BYTE_ORDER == BIG_ENDIAN 404 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 405 #define NI_NODEADDR_FLAG_ALL 0x2 406 #define NI_NODEADDR_FLAG_COMPAT 0x4 407 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 408 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 409 #define NI_NODEADDR_FLAG_GLOBAL 0x20 410 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 411 #elif BYTE_ORDER == LITTLE_ENDIAN 412 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 413 #define NI_NODEADDR_FLAG_ALL 0x0200 414 #define NI_NODEADDR_FLAG_COMPAT 0x0400 415 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 416 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 417 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 418 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 419 #endif 420 #endif 421 422 struct ni_reply_fqdn { 423 u_int32_t ni_fqdn_ttl; /* TTL */ 424 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 425 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 426 } __packed; 427 428 /* 429 * Router Renumbering. as router-renum-08.txt 430 */ 431 struct icmp6_router_renum { /* router renumbering header */ 432 struct icmp6_hdr rr_hdr; 433 u_int8_t rr_segnum; 434 u_int8_t rr_flags; 435 u_int16_t rr_maxdelay; 436 u_int32_t rr_reserved; 437 } __packed; 438 439 #define ICMP6_RR_FLAGS_TEST 0x80 440 #define ICMP6_RR_FLAGS_REQRESULT 0x40 441 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 442 #define ICMP6_RR_FLAGS_SPECSITE 0x10 443 #define ICMP6_RR_FLAGS_PREVDONE 0x08 444 445 #define rr_type rr_hdr.icmp6_type 446 #define rr_code rr_hdr.icmp6_code 447 #define rr_cksum rr_hdr.icmp6_cksum 448 #define rr_seqnum rr_hdr.icmp6_data32[0] 449 450 struct rr_pco_match { /* match prefix part */ 451 u_int8_t rpm_code; 452 u_int8_t rpm_len; 453 u_int8_t rpm_ordinal; 454 u_int8_t rpm_matchlen; 455 u_int8_t rpm_minlen; 456 u_int8_t rpm_maxlen; 457 u_int16_t rpm_reserved; 458 struct in6_addr rpm_prefix; 459 } __packed; 460 461 #define RPM_PCO_ADD 1 462 #define RPM_PCO_CHANGE 2 463 #define RPM_PCO_SETGLOBAL 3 464 #define RPM_PCO_MAX 4 465 466 struct rr_pco_use { /* use prefix part */ 467 u_int8_t rpu_uselen; 468 u_int8_t rpu_keeplen; 469 u_int8_t rpu_ramask; 470 u_int8_t rpu_raflags; 471 u_int32_t rpu_vltime; 472 u_int32_t rpu_pltime; 473 u_int32_t rpu_flags; 474 struct in6_addr rpu_prefix; 475 } __packed; 476 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 477 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 478 479 #if BYTE_ORDER == BIG_ENDIAN 480 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 481 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 482 #elif BYTE_ORDER == LITTLE_ENDIAN 483 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 484 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 485 #endif 486 487 struct rr_result { /* router renumbering result message */ 488 u_int16_t rrr_flags; 489 u_int8_t rrr_ordinal; 490 u_int8_t rrr_matchedlen; 491 u_int32_t rrr_ifid; 492 struct in6_addr rrr_prefix; 493 } __packed; 494 #if BYTE_ORDER == BIG_ENDIAN 495 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 496 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 497 #elif BYTE_ORDER == LITTLE_ENDIAN 498 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 499 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 500 #endif 501 502 /* 503 * icmp6 filter structures. 504 */ 505 506 struct icmp6_filter { 507 u_int32_t icmp6_filt[8]; 508 }; 509 510 #ifdef _KERNEL 511 #define ICMP6_FILTER_SETPASSALL(filterp) \ 512 do { \ 513 int i; u_char *p; \ 514 p = (u_char *)filterp; \ 515 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 516 p[i] = 0xff; \ 517 } while (/*CONSTCOND*/ 0) 518 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 519 bzero(filterp, sizeof(struct icmp6_filter)) 520 #else /* _KERNEL */ 521 #define ICMP6_FILTER_SETPASSALL(filterp) \ 522 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 523 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 524 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 525 #endif /* _KERNEL */ 526 527 #define ICMP6_FILTER_SETPASS(type, filterp) \ 528 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 529 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 530 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 531 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 532 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 533 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 534 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 535 536 /* 537 * Variables related to this implementation 538 * of the internet control message protocol version 6. 539 */ 540 struct icmp6errstat { 541 u_quad_t icp6errs_dst_unreach_noroute; 542 u_quad_t icp6errs_dst_unreach_admin; 543 u_quad_t icp6errs_dst_unreach_beyondscope; 544 u_quad_t icp6errs_dst_unreach_addr; 545 u_quad_t icp6errs_dst_unreach_noport; 546 u_quad_t icp6errs_packet_too_big; 547 u_quad_t icp6errs_time_exceed_transit; 548 u_quad_t icp6errs_time_exceed_reassembly; 549 u_quad_t icp6errs_paramprob_header; 550 u_quad_t icp6errs_paramprob_nextheader; 551 u_quad_t icp6errs_paramprob_option; 552 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 553 u_quad_t icp6errs_unknown; 554 }; 555 556 struct icmp6stat { 557 /* statistics related to icmp6 packets generated */ 558 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 559 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 560 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 561 u_quad_t icp6s_outhist[256]; 562 /* statistics related to input message processed */ 563 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 564 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 565 u_quad_t icp6s_checksum; /* bad checksum */ 566 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 567 /* 568 * number of responses: this member is inherited from netinet code, but 569 * for netinet6 code, it is already available in icp6s_outhist[]. 570 */ 571 u_quad_t icp6s_reflect; 572 u_quad_t icp6s_inhist[256]; 573 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 574 struct icmp6errstat icp6s_outerrhist; 575 #define icp6s_odst_unreach_noroute \ 576 icp6s_outerrhist.icp6errs_dst_unreach_noroute 577 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 578 #define icp6s_odst_unreach_beyondscope \ 579 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 580 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 581 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 582 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 583 #define icp6s_otime_exceed_transit \ 584 icp6s_outerrhist.icp6errs_time_exceed_transit 585 #define icp6s_otime_exceed_reassembly \ 586 icp6s_outerrhist.icp6errs_time_exceed_reassembly 587 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 588 #define icp6s_oparamprob_nextheader \ 589 icp6s_outerrhist.icp6errs_paramprob_nextheader 590 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 591 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 592 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 593 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 594 u_quad_t icp6s_nd_badopt; /* bad ND options */ 595 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 596 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 597 u_quad_t icp6s_badrs; /* bad router advertisement */ 598 u_quad_t icp6s_badra; /* bad router advertisement */ 599 u_quad_t icp6s_badredirect; /* bad redirect message */ 600 }; 601 602 /* 603 * Names for ICMP sysctl objects 604 */ 605 #define ICMPV6CTL_STATS 1 606 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 607 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 608 #if 0 /*obsoleted*/ 609 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 610 #endif 611 #define ICMPV6CTL_ND6_PRUNE 6 612 #define ICMPV6CTL_ND6_DELAY 8 613 #define ICMPV6CTL_ND6_UMAXTRIES 9 614 #define ICMPV6CTL_ND6_MMAXTRIES 10 615 #define ICMPV6CTL_ND6_USELOOPBACK 11 616 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 617 #define ICMPV6CTL_NODEINFO 13 618 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 619 #define ICMPV6CTL_ND6_MAXNUDHINT 15 620 #define ICMPV6CTL_MTUDISC_HIWAT 16 621 #define ICMPV6CTL_MTUDISC_LOWAT 17 622 #define ICMPV6CTL_ND6_DEBUG 18 623 #define ICMPV6CTL_ND6_DRLIST 19 624 #define ICMPV6CTL_ND6_PRLIST 20 625 #define ICMPV6CTL_MAXID 21 626 627 #define RTF_PROBEMTU RTF_PROTO1 628 629 #ifdef _KERNEL 630 # ifdef __STDC__ 631 struct rtentry; 632 struct rttimer; 633 struct in6_multi; 634 # endif 635 void icmp6_init(void); 636 void icmp6_paramerror(struct mbuf *, int); 637 void icmp6_error(struct mbuf *, int, int, int); 638 int icmp6_input(struct mbuf **, int *, int); 639 void icmp6_fasttimo(void); 640 void icmp6_reflect(struct mbuf *, size_t); 641 void icmp6_prepare(struct mbuf *); 642 void icmp6_redirect_input(struct mbuf *, int); 643 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 644 645 struct ip6ctlparam; 646 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 647 648 /* XXX: is this the right place for these macros? */ 649 #define icmp6_ifstat_inc(ifp, tag) \ 650 do { \ 651 if (ifp) \ 652 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 653 } while (/*CONSTCOND*/ 0) 654 655 #define icmp6_ifoutstat_inc(ifp, type, code) \ 656 do { \ 657 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 658 if (type < ICMP6_INFOMSG_MASK) \ 659 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 660 switch (type) { \ 661 case ICMP6_DST_UNREACH: \ 662 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 663 if (code == ICMP6_DST_UNREACH_ADMIN) \ 664 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 665 break; \ 666 case ICMP6_PACKET_TOO_BIG: \ 667 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 668 break; \ 669 case ICMP6_TIME_EXCEEDED: \ 670 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 671 break; \ 672 case ICMP6_PARAM_PROB: \ 673 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 674 break; \ 675 case ICMP6_ECHO_REQUEST: \ 676 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 677 break; \ 678 case ICMP6_ECHO_REPLY: \ 679 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 680 break; \ 681 case MLD_LISTENER_QUERY: \ 682 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 683 break; \ 684 case MLD_LISTENER_REPORT: \ 685 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 686 break; \ 687 case MLD_LISTENER_DONE: \ 688 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 689 break; \ 690 case ND_ROUTER_SOLICIT: \ 691 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 692 break; \ 693 case ND_ROUTER_ADVERT: \ 694 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 695 break; \ 696 case ND_NEIGHBOR_SOLICIT: \ 697 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 698 break; \ 699 case ND_NEIGHBOR_ADVERT: \ 700 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 701 break; \ 702 case ND_REDIRECT: \ 703 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 704 break; \ 705 } \ 706 } while (/*CONSTCOND*/ 0) 707 708 extern int icmp6_rediraccept; /* accept/process redirects */ 709 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 710 #endif /* _KERNEL */ 711 712 #endif /* not _NETINET_ICMP6_H_ */ 713