1 /* $FreeBSD: src/sys/netinet/icmp6.h,v 1.2.2.5 2002/06/29 18:31:11 ume Exp $ */ 2 /* $DragonFly: src/sys/netinet/icmp6.h,v 1.5 2004/12/21 02:54:15 hsu Exp $ */ 3 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 67 */ 68 69 #ifndef _NETINET_ICMP6_H_ 70 #define _NETINET_ICMP6_H_ 71 72 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 73 - sizeof(struct icmp6_hdr) */ 74 75 struct icmp6_hdr { 76 u_int8_t icmp6_type; /* type field */ 77 u_int8_t icmp6_code; /* code field */ 78 u_int16_t icmp6_cksum; /* checksum field */ 79 union { 80 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 81 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 82 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 83 } icmp6_dataun; 84 } __attribute__((__packed__)); 85 86 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 87 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 88 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 89 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 90 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 91 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 92 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 93 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 94 95 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 96 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 97 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 98 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 99 100 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 101 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 102 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 103 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 104 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 105 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 106 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 107 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 108 109 #ifndef _KERNEL 110 /* the followings are for backward compatibility to old KAME apps. */ 111 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 112 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 113 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 114 #endif 115 116 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 117 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 118 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 119 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 120 #define ND_REDIRECT 137 /* redirect */ 121 122 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 123 124 #define ICMP6_WRUREQUEST 139 /* who are you request */ 125 #define ICMP6_WRUREPLY 140 /* who are you reply */ 126 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 127 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 128 #define ICMP6_NI_QUERY 139 /* node information request */ 129 #define ICMP6_NI_REPLY 140 /* node information reply */ 130 131 /* The definitions below are experimental. TBA */ 132 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 133 #define MLD_MTRACE 201 /* mtrace messages */ 134 135 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 136 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 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 203 144 145 #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 */ 151 152 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 153 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 154 155 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 156 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 157 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 158 159 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 160 161 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 162 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 163 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 164 165 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 166 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 167 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 168 169 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 170 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 171 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 172 173 /* Used in kernel only */ 174 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 175 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 176 177 /* 178 * Multicast Listener Discovery 179 */ 180 struct mld_hdr { 181 struct icmp6_hdr mld_icmp6_hdr; 182 struct in6_addr mld_addr; /* multicast address */ 183 } __attribute__((__packed__)); 184 185 /* definitions to provide backward compatibility to old KAME applications */ 186 #ifndef _KERNEL 187 #define mld6_hdr mld_hdr 188 #define mld6_type mld_type 189 #define mld6_code mld_code 190 #define mld6_cksum mld_cksum 191 #define mld6_maxdelay mld_maxdelay 192 #define mld6_reserved mld_reserved 193 #define mld6_addr mld_addr 194 #endif 195 196 /* shortcut macro definitions */ 197 #define mld_type mld_icmp6_hdr.icmp6_type 198 #define mld_code mld_icmp6_hdr.icmp6_code 199 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 200 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 201 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 202 203 /* 204 * Neighbor Discovery 205 */ 206 207 struct nd_router_solicit { /* router solicitation */ 208 struct icmp6_hdr nd_rs_hdr; 209 /* could be followed by options */ 210 } __attribute__((__packed__)); 211 212 #define nd_rs_type nd_rs_hdr.icmp6_type 213 #define nd_rs_code nd_rs_hdr.icmp6_code 214 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 215 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 216 217 struct nd_router_advert { /* router advertisement */ 218 struct icmp6_hdr nd_ra_hdr; 219 u_int32_t nd_ra_reachable; /* reachable time */ 220 u_int32_t nd_ra_retransmit; /* retransmit timer */ 221 /* could be followed by options */ 222 } __attribute__((__packed__)); 223 224 #define nd_ra_type nd_ra_hdr.icmp6_type 225 #define nd_ra_code nd_ra_hdr.icmp6_code 226 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 227 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 228 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 229 #define ND_RA_FLAG_MANAGED 0x80 230 #define ND_RA_FLAG_OTHER 0x40 231 #define ND_RA_FLAG_HA 0x20 232 233 /* 234 * Router preference values based on draft-draves-ipngwg-router-selection-01. 235 * These are non-standard definitions. 236 */ 237 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 238 239 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 240 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 241 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 242 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 243 244 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 245 246 struct nd_neighbor_solicit { /* neighbor solicitation */ 247 struct icmp6_hdr nd_ns_hdr; 248 struct in6_addr nd_ns_target; /*target address */ 249 /* could be followed by options */ 250 } __attribute__((__packed__)); 251 252 #define nd_ns_type nd_ns_hdr.icmp6_type 253 #define nd_ns_code nd_ns_hdr.icmp6_code 254 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 255 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 256 257 struct nd_neighbor_advert { /* neighbor advertisement */ 258 struct icmp6_hdr nd_na_hdr; 259 struct in6_addr nd_na_target; /* target address */ 260 /* could be followed by options */ 261 } __attribute__((__packed__)); 262 263 #define nd_na_type nd_na_hdr.icmp6_type 264 #define nd_na_code nd_na_hdr.icmp6_code 265 #define nd_na_cksum nd_na_hdr.icmp6_cksum 266 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 267 #if _BYTE_ORDER == _BIG_ENDIAN 268 #define ND_NA_FLAG_ROUTER 0x80000000 269 #define ND_NA_FLAG_SOLICITED 0x40000000 270 #define ND_NA_FLAG_OVERRIDE 0x20000000 271 #elif _BYTE_ORDER == _LITTLE_ENDIAN 272 #define ND_NA_FLAG_ROUTER 0x80 273 #define ND_NA_FLAG_SOLICITED 0x40 274 #define ND_NA_FLAG_OVERRIDE 0x20 275 #else 276 #error "Byte order not implemented" 277 #endif 278 279 struct nd_redirect { /* redirect */ 280 struct icmp6_hdr nd_rd_hdr; 281 struct in6_addr nd_rd_target; /* target address */ 282 struct in6_addr nd_rd_dst; /* destination address */ 283 /* could be followed by options */ 284 } __attribute__((__packed__)); 285 286 #define nd_rd_type nd_rd_hdr.icmp6_type 287 #define nd_rd_code nd_rd_hdr.icmp6_code 288 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 289 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 290 291 struct nd_opt_hdr { /* Neighbor discovery option header */ 292 u_int8_t nd_opt_type; 293 u_int8_t nd_opt_len; 294 /* followed by option specific data*/ 295 } __attribute__((__packed__)); 296 297 #define ND_OPT_SOURCE_LINKADDR 1 298 #define ND_OPT_TARGET_LINKADDR 2 299 #define ND_OPT_PREFIX_INFORMATION 3 300 #define ND_OPT_REDIRECTED_HEADER 4 301 #define ND_OPT_MTU 5 302 303 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 304 305 struct nd_opt_prefix_info { /* prefix information */ 306 u_int8_t nd_opt_pi_type; 307 u_int8_t nd_opt_pi_len; 308 u_int8_t nd_opt_pi_prefix_len; 309 u_int8_t nd_opt_pi_flags_reserved; 310 u_int32_t nd_opt_pi_valid_time; 311 u_int32_t nd_opt_pi_preferred_time; 312 u_int32_t nd_opt_pi_reserved2; 313 struct in6_addr nd_opt_pi_prefix; 314 } __attribute__((__packed__)); 315 316 #define ND_OPT_PI_FLAG_ONLINK 0x80 317 #define ND_OPT_PI_FLAG_AUTO 0x40 318 319 struct nd_opt_rd_hdr { /* redirected header */ 320 u_int8_t nd_opt_rh_type; 321 u_int8_t nd_opt_rh_len; 322 u_int16_t nd_opt_rh_reserved1; 323 u_int32_t nd_opt_rh_reserved2; 324 /* followed by IP header and data */ 325 } __attribute__((__packed__)); 326 327 struct nd_opt_mtu { /* MTU option */ 328 u_int8_t nd_opt_mtu_type; 329 u_int8_t nd_opt_mtu_len; 330 u_int16_t nd_opt_mtu_reserved; 331 u_int32_t nd_opt_mtu_mtu; 332 } __attribute__((__packed__)); 333 334 struct nd_opt_route_info { /* route info */ 335 u_int8_t nd_opt_rti_type; 336 u_int8_t nd_opt_rti_len; 337 u_int8_t nd_opt_rti_prefixlen; 338 u_int8_t nd_opt_rti_flags; 339 u_int32_t nd_opt_rti_lifetime; 340 /* prefix follows */ 341 } __attribute__((__packed__)); 342 343 /* 344 * icmp6 namelookup 345 */ 346 347 struct icmp6_namelookup { 348 struct icmp6_hdr icmp6_nl_hdr; 349 u_int8_t icmp6_nl_nonce[8]; 350 int32_t icmp6_nl_ttl; 351 #if 0 352 u_int8_t icmp6_nl_len; 353 u_int8_t icmp6_nl_name[3]; 354 #endif 355 /* could be followed by options */ 356 } __attribute__((__packed__)); 357 358 /* 359 * icmp6 node information 360 */ 361 struct icmp6_nodeinfo { 362 struct icmp6_hdr icmp6_ni_hdr; 363 u_int8_t icmp6_ni_nonce[8]; 364 /* could be followed by reply data */ 365 } __attribute__((__packed__)); 366 367 #define ni_type icmp6_ni_hdr.icmp6_type 368 #define ni_code icmp6_ni_hdr.icmp6_code 369 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 370 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 371 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 372 373 #define NI_QTYPE_NOOP 0 /* NOOP */ 374 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 375 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 376 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 377 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 378 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 379 380 #if _BYTE_ORDER == _BIG_ENDIAN 381 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 382 #define NI_FQDN_FLAG_VALIDTTL 0x1 383 #elif _BYTE_ORDER == _LITTLE_ENDIAN 384 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 385 #define NI_FQDN_FLAG_VALIDTTL 0x0100 386 #else 387 #error "Byte order not implemented" 388 #endif 389 390 #ifdef NAME_LOOKUPS_04 391 #if _BYTE_ORDER == _BIG_ENDIAN 392 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 393 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 394 #define NI_NODEADDR_FLAG_GLOBAL 0x4 395 #define NI_NODEADDR_FLAG_ALL 0x8 396 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 397 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 398 #elif _BYTE_ORDER == _LITTLE_ENDIAN 399 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 400 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 401 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 402 #define NI_NODEADDR_FLAG_ALL 0x0800 403 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 404 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 405 #else 406 #error "Byte order not implemented" 407 #endif 408 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 409 #if _BYTE_ORDER == _BIG_ENDIAN 410 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 411 #define NI_NODEADDR_FLAG_ALL 0x2 412 #define NI_NODEADDR_FLAG_COMPAT 0x4 413 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 414 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 415 #define NI_NODEADDR_FLAG_GLOBAL 0x20 416 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 417 #elif _BYTE_ORDER == _LITTLE_ENDIAN 418 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 419 #define NI_NODEADDR_FLAG_ALL 0x0200 420 #define NI_NODEADDR_FLAG_COMPAT 0x0400 421 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 422 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 423 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 424 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 425 #else 426 #error "Byte order not implemented" 427 #endif 428 #endif 429 430 struct ni_reply_fqdn { 431 u_int32_t ni_fqdn_ttl; /* TTL */ 432 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 433 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 434 } __attribute__((__packed__)); 435 436 /* 437 * Router Renumbering. as router-renum-08.txt 438 */ 439 struct icmp6_router_renum { /* router renumbering header */ 440 struct icmp6_hdr rr_hdr; 441 u_int8_t rr_segnum; 442 u_int8_t rr_flags; 443 u_int16_t rr_maxdelay; 444 u_int32_t rr_reserved; 445 } __attribute__((__packed__)); 446 447 #define ICMP6_RR_FLAGS_TEST 0x80 448 #define ICMP6_RR_FLAGS_REQRESULT 0x40 449 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 450 #define ICMP6_RR_FLAGS_SPECSITE 0x10 451 #define ICMP6_RR_FLAGS_PREVDONE 0x08 452 453 #define rr_type rr_hdr.icmp6_type 454 #define rr_code rr_hdr.icmp6_code 455 #define rr_cksum rr_hdr.icmp6_cksum 456 #define rr_seqnum rr_hdr.icmp6_data32[0] 457 458 struct rr_pco_match { /* match prefix part */ 459 u_int8_t rpm_code; 460 u_int8_t rpm_len; 461 u_int8_t rpm_ordinal; 462 u_int8_t rpm_matchlen; 463 u_int8_t rpm_minlen; 464 u_int8_t rpm_maxlen; 465 u_int16_t rpm_reserved; 466 struct in6_addr rpm_prefix; 467 } __attribute__((__packed__)); 468 469 #define RPM_PCO_ADD 1 470 #define RPM_PCO_CHANGE 2 471 #define RPM_PCO_SETGLOBAL 3 472 #define RPM_PCO_MAX 4 473 474 struct rr_pco_use { /* use prefix part */ 475 u_int8_t rpu_uselen; 476 u_int8_t rpu_keeplen; 477 u_int8_t rpu_ramask; 478 u_int8_t rpu_raflags; 479 u_int32_t rpu_vltime; 480 u_int32_t rpu_pltime; 481 u_int32_t rpu_flags; 482 struct in6_addr rpu_prefix; 483 } __attribute__((__packed__)); 484 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 485 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 486 487 #if _BYTE_ORDER == _BIG_ENDIAN 488 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 489 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 490 #elif _BYTE_ORDER == _LITTLE_ENDIAN 491 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 492 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 493 #else 494 #error "Byte order not implemented" 495 #endif 496 497 struct rr_result { /* router renumbering result message */ 498 u_int16_t rrr_flags; 499 u_int8_t rrr_ordinal; 500 u_int8_t rrr_matchedlen; 501 u_int32_t rrr_ifid; 502 struct in6_addr rrr_prefix; 503 } __attribute__((__packed__)); 504 #if _BYTE_ORDER == _BIG_ENDIAN 505 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 506 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 507 #elif _BYTE_ORDER == _LITTLE_ENDIAN 508 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 509 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 510 #else 511 #error "Byte order not implemented" 512 #endif 513 514 /* 515 * icmp6 filter structures. 516 */ 517 518 struct icmp6_filter { 519 u_int32_t icmp6_filt[8]; 520 }; 521 522 #ifdef _KERNEL 523 #define ICMP6_FILTER_SETPASSALL(filterp) \ 524 do { \ 525 int i; u_char *p; \ 526 p = (u_char *)filterp; \ 527 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 528 p[i] = 0xff; \ 529 } while (0) 530 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 531 bzero(filterp, sizeof(struct icmp6_filter)) 532 #else /* _KERNEL */ 533 #define ICMP6_FILTER_SETPASSALL(filterp) \ 534 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 535 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 536 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 537 #endif /* _KERNEL */ 538 539 #define ICMP6_FILTER_SETPASS(type, filterp) \ 540 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 541 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 542 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 543 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 544 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 545 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 546 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 547 548 /* 549 * Variables related to this implementation 550 * of the internet control message protocol version 6. 551 */ 552 struct icmp6errstat { 553 u_quad_t icp6errs_dst_unreach_noroute; 554 u_quad_t icp6errs_dst_unreach_admin; 555 u_quad_t icp6errs_dst_unreach_beyondscope; 556 u_quad_t icp6errs_dst_unreach_addr; 557 u_quad_t icp6errs_dst_unreach_noport; 558 u_quad_t icp6errs_packet_too_big; 559 u_quad_t icp6errs_time_exceed_transit; 560 u_quad_t icp6errs_time_exceed_reassembly; 561 u_quad_t icp6errs_paramprob_header; 562 u_quad_t icp6errs_paramprob_nextheader; 563 u_quad_t icp6errs_paramprob_option; 564 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 565 u_quad_t icp6errs_unknown; 566 }; 567 568 struct icmp6stat { 569 /* statistics related to icmp6 packets generated */ 570 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 571 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 572 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 573 u_quad_t icp6s_outhist[256]; 574 /* statistics related to input message processed */ 575 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 576 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 577 u_quad_t icp6s_checksum; /* bad checksum */ 578 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 579 /* 580 * number of responses: this member is inherited from netinet code, but 581 * for netinet6 code, it is already available in icp6s_outhist[]. 582 */ 583 u_quad_t icp6s_reflect; 584 u_quad_t icp6s_inhist[256]; 585 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 586 struct icmp6errstat icp6s_outerrhist; 587 #define icp6s_odst_unreach_noroute \ 588 icp6s_outerrhist.icp6errs_dst_unreach_noroute 589 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 590 #define icp6s_odst_unreach_beyondscope \ 591 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 592 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 593 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 594 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 595 #define icp6s_otime_exceed_transit \ 596 icp6s_outerrhist.icp6errs_time_exceed_transit 597 #define icp6s_otime_exceed_reassembly \ 598 icp6s_outerrhist.icp6errs_time_exceed_reassembly 599 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 600 #define icp6s_oparamprob_nextheader \ 601 icp6s_outerrhist.icp6errs_paramprob_nextheader 602 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 603 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 604 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 605 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 606 u_quad_t icp6s_nd_badopt; /* bad ND options */ 607 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 608 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 609 u_quad_t icp6s_badrs; /* bad router advertisement */ 610 u_quad_t icp6s_badra; /* bad router advertisement */ 611 u_quad_t icp6s_badredirect; /* bad redirect message */ 612 }; 613 614 /* 615 * Names for ICMP sysctl objects 616 */ 617 #define ICMPV6CTL_STATS 1 618 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 619 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 620 #if 0 /*obsoleted*/ 621 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 622 #endif 623 #define ICMPV6CTL_ND6_PRUNE 6 624 #define ICMPV6CTL_ND6_DELAY 8 625 #define ICMPV6CTL_ND6_UMAXTRIES 9 626 #define ICMPV6CTL_ND6_MMAXTRIES 10 627 #define ICMPV6CTL_ND6_USELOOPBACK 11 628 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 629 #define ICMPV6CTL_NODEINFO 13 630 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 631 #define ICMPV6CTL_ND6_MAXNUDHINT 15 632 #define ICMPV6CTL_MTUDISC_HIWAT 16 633 #define ICMPV6CTL_MTUDISC_LOWAT 17 634 #define ICMPV6CTL_ND6_DEBUG 18 635 #define ICMPV6CTL_ND6_DRLIST 19 636 #define ICMPV6CTL_ND6_PRLIST 20 637 #define ICMPV6CTL_MAXID 21 638 639 #define ICMPV6CTL_NAMES { \ 640 { 0, 0 }, \ 641 { 0, 0 }, \ 642 { "rediraccept", CTLTYPE_INT }, \ 643 { "redirtimeout", CTLTYPE_INT }, \ 644 { 0, 0 }, \ 645 { 0, 0 }, \ 646 { "nd6_prune", CTLTYPE_INT }, \ 647 { 0, 0 }, \ 648 { "nd6_delay", CTLTYPE_INT }, \ 649 { "nd6_umaxtries", CTLTYPE_INT }, \ 650 { "nd6_mmaxtries", CTLTYPE_INT }, \ 651 { "nd6_useloopback", CTLTYPE_INT }, \ 652 { 0, 0 }, \ 653 { "nodeinfo", CTLTYPE_INT }, \ 654 { "errppslimit", CTLTYPE_INT }, \ 655 { "nd6_maxnudhint", CTLTYPE_INT }, \ 656 { "mtudisc_hiwat", CTLTYPE_INT }, \ 657 { "mtudisc_lowat", CTLTYPE_INT }, \ 658 { "nd6_debug", CTLTYPE_INT }, \ 659 { 0, 0 }, \ 660 { 0, 0 }, \ 661 } 662 663 #define RTF_PROBEMTU RTF_PROTO1 664 665 #ifdef _KERNEL 666 # ifdef __STDC__ 667 struct rtentry; 668 struct rttimer; 669 struct in6_multi; 670 # endif 671 void icmp6_init (void); 672 void icmp6_paramerror (struct mbuf *, int); 673 void icmp6_error (struct mbuf *, int, int, int); 674 int icmp6_input (struct mbuf **, int *, int); 675 void icmp6_fasttimo (void); 676 void icmp6_reflect (struct mbuf *, size_t); 677 void icmp6_prepare (struct mbuf *); 678 void icmp6_redirect_input (struct mbuf *, int); 679 void icmp6_redirect_output (struct mbuf *, struct rtentry *); 680 681 struct ip6ctlparam; 682 void icmp6_mtudisc_update (struct ip6ctlparam *, int); 683 684 /* XXX: is this the right place for these macros? */ 685 #define icmp6_ifstat_inc(ifp, tag) \ 686 do { \ 687 if ((ifp) && (ifp)->if_index <= if_index \ 688 && (ifp)->if_index < icmp6_ifstatmax \ 689 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) { \ 690 icmp6_ifstat[(ifp)->if_index]->tag++; \ 691 } \ 692 } while (0) 693 694 #define icmp6_ifoutstat_inc(ifp, type, code) \ 695 do { \ 696 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 697 if (type < ICMP6_INFOMSG_MASK) \ 698 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 699 switch(type) { \ 700 case ICMP6_DST_UNREACH: \ 701 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 702 if (code == ICMP6_DST_UNREACH_ADMIN) \ 703 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 704 break; \ 705 case ICMP6_PACKET_TOO_BIG: \ 706 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 707 break; \ 708 case ICMP6_TIME_EXCEEDED: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 710 break; \ 711 case ICMP6_PARAM_PROB: \ 712 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 713 break; \ 714 case ICMP6_ECHO_REQUEST: \ 715 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 716 break; \ 717 case ICMP6_ECHO_REPLY: \ 718 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 719 break; \ 720 case MLD_LISTENER_QUERY: \ 721 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 722 break; \ 723 case MLD_LISTENER_REPORT: \ 724 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 725 break; \ 726 case MLD_LISTENER_DONE: \ 727 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 728 break; \ 729 case ND_ROUTER_SOLICIT: \ 730 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 731 break; \ 732 case ND_ROUTER_ADVERT: \ 733 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 734 break; \ 735 case ND_NEIGHBOR_SOLICIT: \ 736 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 737 break; \ 738 case ND_NEIGHBOR_ADVERT: \ 739 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 740 break; \ 741 case ND_REDIRECT: \ 742 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 743 break; \ 744 } \ 745 } while (0) 746 747 extern int icmp6_rediraccept; /* accept/process redirects */ 748 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 749 #endif /* _KERNEL */ 750 751 #endif /* not _NETINET_ICMP6_H_ */ 752