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 1.7 2006/05/20 02:42:12 dillon 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 #ifndef _SYS_TYPES_H_ 73 #include <sys/types.h> 74 #endif 75 #ifndef _NETINET6_IN6_H_ 76 #include <netinet/in.h> 77 #endif 78 #ifndef _MACHINE_ENDIAN_H_ 79 #include <machine/endian.h> 80 #endif 81 82 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 83 - sizeof(struct icmp6_hdr) */ 84 85 struct icmp6_hdr { 86 u_int8_t icmp6_type; /* type field */ 87 u_int8_t icmp6_code; /* code field */ 88 u_int16_t icmp6_cksum; /* checksum field */ 89 union { 90 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 91 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 92 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 93 } icmp6_dataun; 94 } __attribute__((__packed__)); 95 96 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 97 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 98 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 99 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 100 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 101 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 102 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 103 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 104 105 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 106 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 107 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 108 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 109 110 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 111 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 112 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 113 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 114 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 115 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 116 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 117 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 118 119 #ifndef _KERNEL 120 /* the followings are for backward compatibility to old KAME apps. */ 121 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 122 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 123 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 124 #endif 125 126 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 127 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 128 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 129 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 130 #define ND_REDIRECT 137 /* redirect */ 131 132 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 133 134 #define ICMP6_WRUREQUEST 139 /* who are you request */ 135 #define ICMP6_WRUREPLY 140 /* who are you reply */ 136 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 137 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 138 #define ICMP6_NI_QUERY 139 /* node information request */ 139 #define ICMP6_NI_REPLY 140 /* node information reply */ 140 141 /* The definitions below are experimental. TBA */ 142 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 143 #define MLD_MTRACE 201 /* mtrace messages */ 144 145 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 146 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 147 148 #ifndef _KERNEL 149 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 150 #define MLD6_MTRACE MLD_MTRACE 151 #endif 152 153 #define ICMP6_MAXTYPE 203 154 155 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 156 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 157 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 158 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 159 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 160 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 161 162 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 163 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 164 165 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 166 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 167 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 168 169 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 170 171 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 172 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 173 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 174 175 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 176 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 177 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 178 179 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 180 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 181 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 182 183 /* Used in kernel only */ 184 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 185 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 186 187 /* 188 * Multicast Listener Discovery 189 */ 190 struct mld_hdr { 191 struct icmp6_hdr mld_icmp6_hdr; 192 struct in6_addr mld_addr; /* multicast address */ 193 } __attribute__((__packed__)); 194 195 /* definitions to provide backward compatibility to old KAME applications */ 196 #ifndef _KERNEL 197 #define mld6_hdr mld_hdr 198 #define mld6_type mld_type 199 #define mld6_code mld_code 200 #define mld6_cksum mld_cksum 201 #define mld6_maxdelay mld_maxdelay 202 #define mld6_reserved mld_reserved 203 #define mld6_addr mld_addr 204 #endif 205 206 /* shortcut macro definitions */ 207 #define mld_type mld_icmp6_hdr.icmp6_type 208 #define mld_code mld_icmp6_hdr.icmp6_code 209 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 210 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 211 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 212 213 /* 214 * Neighbor Discovery 215 */ 216 217 struct nd_router_solicit { /* router solicitation */ 218 struct icmp6_hdr nd_rs_hdr; 219 /* could be followed by options */ 220 } __attribute__((__packed__)); 221 222 #define nd_rs_type nd_rs_hdr.icmp6_type 223 #define nd_rs_code nd_rs_hdr.icmp6_code 224 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 225 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 226 227 struct nd_router_advert { /* router advertisement */ 228 struct icmp6_hdr nd_ra_hdr; 229 u_int32_t nd_ra_reachable; /* reachable time */ 230 u_int32_t nd_ra_retransmit; /* retransmit timer */ 231 /* could be followed by options */ 232 } __attribute__((__packed__)); 233 234 #define nd_ra_type nd_ra_hdr.icmp6_type 235 #define nd_ra_code nd_ra_hdr.icmp6_code 236 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 237 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 238 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 239 #define ND_RA_FLAG_MANAGED 0x80 240 #define ND_RA_FLAG_OTHER 0x40 241 #define ND_RA_FLAG_HA 0x20 242 243 /* 244 * Router preference values based on draft-draves-ipngwg-router-selection-01. 245 * These are non-standard definitions. 246 */ 247 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 248 249 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 250 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 251 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 252 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 253 254 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 255 256 struct nd_neighbor_solicit { /* neighbor solicitation */ 257 struct icmp6_hdr nd_ns_hdr; 258 struct in6_addr nd_ns_target; /*target address */ 259 /* could be followed by options */ 260 } __attribute__((__packed__)); 261 262 #define nd_ns_type nd_ns_hdr.icmp6_type 263 #define nd_ns_code nd_ns_hdr.icmp6_code 264 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 265 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 266 267 struct nd_neighbor_advert { /* neighbor advertisement */ 268 struct icmp6_hdr nd_na_hdr; 269 struct in6_addr nd_na_target; /* target address */ 270 /* could be followed by options */ 271 } __attribute__((__packed__)); 272 273 #define nd_na_type nd_na_hdr.icmp6_type 274 #define nd_na_code nd_na_hdr.icmp6_code 275 #define nd_na_cksum nd_na_hdr.icmp6_cksum 276 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 277 #if _BYTE_ORDER == _BIG_ENDIAN 278 #define ND_NA_FLAG_ROUTER 0x80000000 279 #define ND_NA_FLAG_SOLICITED 0x40000000 280 #define ND_NA_FLAG_OVERRIDE 0x20000000 281 #elif _BYTE_ORDER == _LITTLE_ENDIAN 282 #define ND_NA_FLAG_ROUTER 0x80 283 #define ND_NA_FLAG_SOLICITED 0x40 284 #define ND_NA_FLAG_OVERRIDE 0x20 285 #else 286 #error "Byte order not implemented" 287 #endif 288 289 struct nd_redirect { /* redirect */ 290 struct icmp6_hdr nd_rd_hdr; 291 struct in6_addr nd_rd_target; /* target address */ 292 struct in6_addr nd_rd_dst; /* destination address */ 293 /* could be followed by options */ 294 } __attribute__((__packed__)); 295 296 #define nd_rd_type nd_rd_hdr.icmp6_type 297 #define nd_rd_code nd_rd_hdr.icmp6_code 298 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 299 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 300 301 struct nd_opt_hdr { /* Neighbor discovery option header */ 302 u_int8_t nd_opt_type; 303 u_int8_t nd_opt_len; 304 /* followed by option specific data*/ 305 } __attribute__((__packed__)); 306 307 #define ND_OPT_SOURCE_LINKADDR 1 308 #define ND_OPT_TARGET_LINKADDR 2 309 #define ND_OPT_PREFIX_INFORMATION 3 310 #define ND_OPT_REDIRECTED_HEADER 4 311 #define ND_OPT_MTU 5 312 313 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 314 315 struct nd_opt_prefix_info { /* prefix information */ 316 u_int8_t nd_opt_pi_type; 317 u_int8_t nd_opt_pi_len; 318 u_int8_t nd_opt_pi_prefix_len; 319 u_int8_t nd_opt_pi_flags_reserved; 320 u_int32_t nd_opt_pi_valid_time; 321 u_int32_t nd_opt_pi_preferred_time; 322 u_int32_t nd_opt_pi_reserved2; 323 struct in6_addr nd_opt_pi_prefix; 324 } __attribute__((__packed__)); 325 326 #define ND_OPT_PI_FLAG_ONLINK 0x80 327 #define ND_OPT_PI_FLAG_AUTO 0x40 328 329 struct nd_opt_rd_hdr { /* redirected header */ 330 u_int8_t nd_opt_rh_type; 331 u_int8_t nd_opt_rh_len; 332 u_int16_t nd_opt_rh_reserved1; 333 u_int32_t nd_opt_rh_reserved2; 334 /* followed by IP header and data */ 335 } __attribute__((__packed__)); 336 337 struct nd_opt_mtu { /* MTU option */ 338 u_int8_t nd_opt_mtu_type; 339 u_int8_t nd_opt_mtu_len; 340 u_int16_t nd_opt_mtu_reserved; 341 u_int32_t nd_opt_mtu_mtu; 342 } __attribute__((__packed__)); 343 344 struct nd_opt_route_info { /* route info */ 345 u_int8_t nd_opt_rti_type; 346 u_int8_t nd_opt_rti_len; 347 u_int8_t nd_opt_rti_prefixlen; 348 u_int8_t nd_opt_rti_flags; 349 u_int32_t nd_opt_rti_lifetime; 350 /* prefix follows */ 351 } __attribute__((__packed__)); 352 353 /* 354 * icmp6 namelookup 355 */ 356 357 struct icmp6_namelookup { 358 struct icmp6_hdr icmp6_nl_hdr; 359 u_int8_t icmp6_nl_nonce[8]; 360 int32_t icmp6_nl_ttl; 361 #if 0 362 u_int8_t icmp6_nl_len; 363 u_int8_t icmp6_nl_name[3]; 364 #endif 365 /* could be followed by options */ 366 } __attribute__((__packed__)); 367 368 /* 369 * icmp6 node information 370 */ 371 struct icmp6_nodeinfo { 372 struct icmp6_hdr icmp6_ni_hdr; 373 u_int8_t icmp6_ni_nonce[8]; 374 /* could be followed by reply data */ 375 } __attribute__((__packed__)); 376 377 #define ni_type icmp6_ni_hdr.icmp6_type 378 #define ni_code icmp6_ni_hdr.icmp6_code 379 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 380 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 381 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 382 383 #define NI_QTYPE_NOOP 0 /* NOOP */ 384 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 385 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 386 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 387 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 388 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 389 390 #if _BYTE_ORDER == _BIG_ENDIAN 391 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 392 #define NI_FQDN_FLAG_VALIDTTL 0x1 393 #elif _BYTE_ORDER == _LITTLE_ENDIAN 394 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 395 #define NI_FQDN_FLAG_VALIDTTL 0x0100 396 #else 397 #error "Byte order not implemented" 398 #endif 399 400 #ifdef NAME_LOOKUPS_04 401 #if _BYTE_ORDER == _BIG_ENDIAN 402 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 403 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 404 #define NI_NODEADDR_FLAG_GLOBAL 0x4 405 #define NI_NODEADDR_FLAG_ALL 0x8 406 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 407 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 408 #elif _BYTE_ORDER == _LITTLE_ENDIAN 409 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 410 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 411 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 412 #define NI_NODEADDR_FLAG_ALL 0x0800 413 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 414 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 415 #else 416 #error "Byte order not implemented" 417 #endif 418 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 419 #if _BYTE_ORDER == _BIG_ENDIAN 420 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 421 #define NI_NODEADDR_FLAG_ALL 0x2 422 #define NI_NODEADDR_FLAG_COMPAT 0x4 423 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 424 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 425 #define NI_NODEADDR_FLAG_GLOBAL 0x20 426 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 427 #elif _BYTE_ORDER == _LITTLE_ENDIAN 428 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 429 #define NI_NODEADDR_FLAG_ALL 0x0200 430 #define NI_NODEADDR_FLAG_COMPAT 0x0400 431 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 432 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 433 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 434 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 435 #else 436 #error "Byte order not implemented" 437 #endif 438 #endif 439 440 struct ni_reply_fqdn { 441 u_int32_t ni_fqdn_ttl; /* TTL */ 442 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 443 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 444 } __attribute__((__packed__)); 445 446 /* 447 * Router Renumbering. as router-renum-08.txt 448 */ 449 struct icmp6_router_renum { /* router renumbering header */ 450 struct icmp6_hdr rr_hdr; 451 u_int8_t rr_segnum; 452 u_int8_t rr_flags; 453 u_int16_t rr_maxdelay; 454 u_int32_t rr_reserved; 455 } __attribute__((__packed__)); 456 457 #define ICMP6_RR_FLAGS_TEST 0x80 458 #define ICMP6_RR_FLAGS_REQRESULT 0x40 459 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 460 #define ICMP6_RR_FLAGS_SPECSITE 0x10 461 #define ICMP6_RR_FLAGS_PREVDONE 0x08 462 463 #define rr_type rr_hdr.icmp6_type 464 #define rr_code rr_hdr.icmp6_code 465 #define rr_cksum rr_hdr.icmp6_cksum 466 #define rr_seqnum rr_hdr.icmp6_data32[0] 467 468 struct rr_pco_match { /* match prefix part */ 469 u_int8_t rpm_code; 470 u_int8_t rpm_len; 471 u_int8_t rpm_ordinal; 472 u_int8_t rpm_matchlen; 473 u_int8_t rpm_minlen; 474 u_int8_t rpm_maxlen; 475 u_int16_t rpm_reserved; 476 struct in6_addr rpm_prefix; 477 } __attribute__((__packed__)); 478 479 #define RPM_PCO_ADD 1 480 #define RPM_PCO_CHANGE 2 481 #define RPM_PCO_SETGLOBAL 3 482 #define RPM_PCO_MAX 4 483 484 struct rr_pco_use { /* use prefix part */ 485 u_int8_t rpu_uselen; 486 u_int8_t rpu_keeplen; 487 u_int8_t rpu_ramask; 488 u_int8_t rpu_raflags; 489 u_int32_t rpu_vltime; 490 u_int32_t rpu_pltime; 491 u_int32_t rpu_flags; 492 struct in6_addr rpu_prefix; 493 } __attribute__((__packed__)); 494 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 495 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 496 497 #if _BYTE_ORDER == _BIG_ENDIAN 498 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 499 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 500 #elif _BYTE_ORDER == _LITTLE_ENDIAN 501 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 502 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 503 #else 504 #error "Byte order not implemented" 505 #endif 506 507 struct rr_result { /* router renumbering result message */ 508 u_int16_t rrr_flags; 509 u_int8_t rrr_ordinal; 510 u_int8_t rrr_matchedlen; 511 u_int32_t rrr_ifid; 512 struct in6_addr rrr_prefix; 513 } __attribute__((__packed__)); 514 #if _BYTE_ORDER == _BIG_ENDIAN 515 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 516 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 517 #elif _BYTE_ORDER == _LITTLE_ENDIAN 518 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 519 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 520 #else 521 #error "Byte order not implemented" 522 #endif 523 524 /* 525 * icmp6 filter structures. 526 */ 527 528 struct icmp6_filter { 529 u_int32_t icmp6_filt[8]; 530 }; 531 532 #ifdef _KERNEL 533 #define ICMP6_FILTER_SETPASSALL(filterp) \ 534 do { \ 535 int i; u_char *p; \ 536 p = (u_char *)filterp; \ 537 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 538 p[i] = 0xff; \ 539 } while (0) 540 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 541 bzero(filterp, sizeof(struct icmp6_filter)) 542 #else /* _KERNEL */ 543 #define ICMP6_FILTER_SETPASSALL(filterp) \ 544 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 545 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 546 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 547 #endif /* _KERNEL */ 548 549 #define ICMP6_FILTER_SETPASS(type, filterp) \ 550 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 551 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 552 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 553 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 554 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 555 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 556 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 557 558 /* 559 * Variables related to this implementation 560 * of the internet control message protocol version 6. 561 */ 562 struct icmp6errstat { 563 u_quad_t icp6errs_dst_unreach_noroute; 564 u_quad_t icp6errs_dst_unreach_admin; 565 u_quad_t icp6errs_dst_unreach_beyondscope; 566 u_quad_t icp6errs_dst_unreach_addr; 567 u_quad_t icp6errs_dst_unreach_noport; 568 u_quad_t icp6errs_packet_too_big; 569 u_quad_t icp6errs_time_exceed_transit; 570 u_quad_t icp6errs_time_exceed_reassembly; 571 u_quad_t icp6errs_paramprob_header; 572 u_quad_t icp6errs_paramprob_nextheader; 573 u_quad_t icp6errs_paramprob_option; 574 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 575 u_quad_t icp6errs_unknown; 576 }; 577 578 struct icmp6stat { 579 /* statistics related to icmp6 packets generated */ 580 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 581 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 582 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 583 u_quad_t icp6s_outhist[256]; 584 /* statistics related to input message processed */ 585 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 586 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 587 u_quad_t icp6s_checksum; /* bad checksum */ 588 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 589 /* 590 * number of responses: this member is inherited from netinet code, but 591 * for netinet6 code, it is already available in icp6s_outhist[]. 592 */ 593 u_quad_t icp6s_reflect; 594 u_quad_t icp6s_inhist[256]; 595 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 596 struct icmp6errstat icp6s_outerrhist; 597 #define icp6s_odst_unreach_noroute \ 598 icp6s_outerrhist.icp6errs_dst_unreach_noroute 599 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 600 #define icp6s_odst_unreach_beyondscope \ 601 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 602 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 603 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 604 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 605 #define icp6s_otime_exceed_transit \ 606 icp6s_outerrhist.icp6errs_time_exceed_transit 607 #define icp6s_otime_exceed_reassembly \ 608 icp6s_outerrhist.icp6errs_time_exceed_reassembly 609 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 610 #define icp6s_oparamprob_nextheader \ 611 icp6s_outerrhist.icp6errs_paramprob_nextheader 612 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 613 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 614 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 615 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 616 u_quad_t icp6s_nd_badopt; /* bad ND options */ 617 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 618 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 619 u_quad_t icp6s_badrs; /* bad router advertisement */ 620 u_quad_t icp6s_badra; /* bad router advertisement */ 621 u_quad_t icp6s_badredirect; /* bad redirect message */ 622 }; 623 624 /* 625 * Names for ICMP sysctl objects 626 */ 627 #define ICMPV6CTL_STATS 1 628 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 629 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 630 #if 0 /*obsoleted*/ 631 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 632 #endif 633 #define ICMPV6CTL_ND6_PRUNE 6 634 #define ICMPV6CTL_ND6_DELAY 8 635 #define ICMPV6CTL_ND6_UMAXTRIES 9 636 #define ICMPV6CTL_ND6_MMAXTRIES 10 637 #define ICMPV6CTL_ND6_USELOOPBACK 11 638 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 639 #define ICMPV6CTL_NODEINFO 13 640 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 641 #define ICMPV6CTL_ND6_MAXNUDHINT 15 642 #define ICMPV6CTL_MTUDISC_HIWAT 16 643 #define ICMPV6CTL_MTUDISC_LOWAT 17 644 #define ICMPV6CTL_ND6_DEBUG 18 645 #define ICMPV6CTL_ND6_DRLIST 19 646 #define ICMPV6CTL_ND6_PRLIST 20 647 #define ICMPV6CTL_MAXID 21 648 649 #define ICMPV6CTL_NAMES { \ 650 { 0, 0 }, \ 651 { 0, 0 }, \ 652 { "rediraccept", CTLTYPE_INT }, \ 653 { "redirtimeout", CTLTYPE_INT }, \ 654 { 0, 0 }, \ 655 { 0, 0 }, \ 656 { "nd6_prune", CTLTYPE_INT }, \ 657 { 0, 0 }, \ 658 { "nd6_delay", CTLTYPE_INT }, \ 659 { "nd6_umaxtries", CTLTYPE_INT }, \ 660 { "nd6_mmaxtries", CTLTYPE_INT }, \ 661 { "nd6_useloopback", CTLTYPE_INT }, \ 662 { 0, 0 }, \ 663 { "nodeinfo", CTLTYPE_INT }, \ 664 { "errppslimit", CTLTYPE_INT }, \ 665 { "nd6_maxnudhint", CTLTYPE_INT }, \ 666 { "mtudisc_hiwat", CTLTYPE_INT }, \ 667 { "mtudisc_lowat", CTLTYPE_INT }, \ 668 { "nd6_debug", CTLTYPE_INT }, \ 669 { 0, 0 }, \ 670 { 0, 0 }, \ 671 } 672 673 #define RTF_PROBEMTU RTF_PROTO1 674 675 #ifdef _KERNEL 676 # ifdef __STDC__ 677 struct rtentry; 678 struct rttimer; 679 struct in6_multi; 680 # endif 681 void icmp6_init (void); 682 void icmp6_paramerror (struct mbuf *, int); 683 void icmp6_error (struct mbuf *, int, int, int); 684 int icmp6_input (struct mbuf **, int *, int); 685 void icmp6_fasttimo (void); 686 void icmp6_reflect (struct mbuf *, size_t); 687 void icmp6_prepare (struct mbuf *); 688 void icmp6_redirect_input (struct mbuf *, int); 689 void icmp6_redirect_output (struct mbuf *, struct rtentry *); 690 691 struct ip6ctlparam; 692 void icmp6_mtudisc_update (struct ip6ctlparam *, int); 693 694 /* XXX: is this the right place for these macros? */ 695 #define icmp6_ifstat_inc(ifp, tag) \ 696 do { \ 697 if (ifp) \ 698 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 699 } while (0) 700 701 #define icmp6_ifoutstat_inc(ifp, type, code) \ 702 do { \ 703 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 704 if (type < ICMP6_INFOMSG_MASK) \ 705 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 706 switch (type) { \ 707 case ICMP6_DST_UNREACH: \ 708 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 709 if (code == ICMP6_DST_UNREACH_ADMIN) \ 710 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 711 break; \ 712 case ICMP6_PACKET_TOO_BIG: \ 713 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 714 break; \ 715 case ICMP6_TIME_EXCEEDED: \ 716 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 717 break; \ 718 case ICMP6_PARAM_PROB: \ 719 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 720 break; \ 721 case ICMP6_ECHO_REQUEST: \ 722 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 723 break; \ 724 case ICMP6_ECHO_REPLY: \ 725 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 726 break; \ 727 case MLD_LISTENER_QUERY: \ 728 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 729 break; \ 730 case MLD_LISTENER_REPORT: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 732 break; \ 733 case MLD_LISTENER_DONE: \ 734 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 735 break; \ 736 case ND_ROUTER_SOLICIT: \ 737 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 738 break; \ 739 case ND_ROUTER_ADVERT: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 741 break; \ 742 case ND_NEIGHBOR_SOLICIT: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 744 break; \ 745 case ND_NEIGHBOR_ADVERT: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 747 break; \ 748 case ND_REDIRECT: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 750 break; \ 751 } \ 752 } while (0) 753 754 extern int icmp6_rediraccept; /* accept/process redirects */ 755 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 756 #endif /* _KERNEL */ 757 758 #endif /* not _NETINET_ICMP6_H_ */ 759