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 */ 312 313 struct nd_opt_prefix_info { /* prefix information */ 314 u_int8_t nd_opt_pi_type; 315 u_int8_t nd_opt_pi_len; 316 u_int8_t nd_opt_pi_prefix_len; 317 u_int8_t nd_opt_pi_flags_reserved; 318 u_int32_t nd_opt_pi_valid_time; 319 u_int32_t nd_opt_pi_preferred_time; 320 u_int32_t nd_opt_pi_reserved2; 321 struct in6_addr nd_opt_pi_prefix; 322 } __attribute__((__packed__)); 323 324 #define ND_OPT_PI_FLAG_ONLINK 0x80 325 #define ND_OPT_PI_FLAG_AUTO 0x40 326 327 struct nd_opt_rd_hdr { /* redirected header */ 328 u_int8_t nd_opt_rh_type; 329 u_int8_t nd_opt_rh_len; 330 u_int16_t nd_opt_rh_reserved1; 331 u_int32_t nd_opt_rh_reserved2; 332 /* followed by IP header and data */ 333 } __attribute__((__packed__)); 334 335 struct nd_opt_mtu { /* MTU option */ 336 u_int8_t nd_opt_mtu_type; 337 u_int8_t nd_opt_mtu_len; 338 u_int16_t nd_opt_mtu_reserved; 339 u_int32_t nd_opt_mtu_mtu; 340 } __attribute__((__packed__)); 341 342 struct nd_opt_route_info { /* route info */ 343 u_int8_t nd_opt_rti_type; 344 u_int8_t nd_opt_rti_len; 345 u_int8_t nd_opt_rti_prefixlen; 346 u_int8_t nd_opt_rti_flags; 347 u_int32_t nd_opt_rti_lifetime; 348 /* prefix follows */ 349 } __attribute__((__packed__)); 350 351 /* 352 * icmp6 namelookup 353 */ 354 355 struct icmp6_namelookup { 356 struct icmp6_hdr icmp6_nl_hdr; 357 u_int8_t icmp6_nl_nonce[8]; 358 int32_t icmp6_nl_ttl; 359 #if 0 360 u_int8_t icmp6_nl_len; 361 u_int8_t icmp6_nl_name[3]; 362 #endif 363 /* could be followed by options */ 364 } __attribute__((__packed__)); 365 366 /* 367 * icmp6 node information 368 */ 369 struct icmp6_nodeinfo { 370 struct icmp6_hdr icmp6_ni_hdr; 371 u_int8_t icmp6_ni_nonce[8]; 372 /* could be followed by reply data */ 373 } __attribute__((__packed__)); 374 375 #define ni_type icmp6_ni_hdr.icmp6_type 376 #define ni_code icmp6_ni_hdr.icmp6_code 377 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 378 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 379 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 380 381 #define NI_QTYPE_NOOP 0 /* NOOP */ 382 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 383 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 384 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 385 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 386 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 387 388 #if _BYTE_ORDER == _BIG_ENDIAN 389 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 390 #define NI_FQDN_FLAG_VALIDTTL 0x1 391 #elif _BYTE_ORDER == _LITTLE_ENDIAN 392 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 393 #define NI_FQDN_FLAG_VALIDTTL 0x0100 394 #else 395 #error "Byte order not implemented" 396 #endif 397 398 #ifdef NAME_LOOKUPS_04 399 #if _BYTE_ORDER == _BIG_ENDIAN 400 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 401 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 402 #define NI_NODEADDR_FLAG_GLOBAL 0x4 403 #define NI_NODEADDR_FLAG_ALL 0x8 404 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 405 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 406 #elif _BYTE_ORDER == _LITTLE_ENDIAN 407 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 408 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 409 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 410 #define NI_NODEADDR_FLAG_ALL 0x0800 411 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 412 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 413 #else 414 #error "Byte order not implemented" 415 #endif 416 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 417 #if _BYTE_ORDER == _BIG_ENDIAN 418 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 419 #define NI_NODEADDR_FLAG_ALL 0x2 420 #define NI_NODEADDR_FLAG_COMPAT 0x4 421 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 422 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 423 #define NI_NODEADDR_FLAG_GLOBAL 0x20 424 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 425 #elif _BYTE_ORDER == _LITTLE_ENDIAN 426 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 427 #define NI_NODEADDR_FLAG_ALL 0x0200 428 #define NI_NODEADDR_FLAG_COMPAT 0x0400 429 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 430 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 431 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 432 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 433 #else 434 #error "Byte order not implemented" 435 #endif 436 #endif 437 438 struct ni_reply_fqdn { 439 u_int32_t ni_fqdn_ttl; /* TTL */ 440 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 441 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 442 } __attribute__((__packed__)); 443 444 /* 445 * Router Renumbering. as router-renum-08.txt 446 */ 447 struct icmp6_router_renum { /* router renumbering header */ 448 struct icmp6_hdr rr_hdr; 449 u_int8_t rr_segnum; 450 u_int8_t rr_flags; 451 u_int16_t rr_maxdelay; 452 u_int32_t rr_reserved; 453 } __attribute__((__packed__)); 454 455 #define ICMP6_RR_FLAGS_TEST 0x80 456 #define ICMP6_RR_FLAGS_REQRESULT 0x40 457 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 458 #define ICMP6_RR_FLAGS_SPECSITE 0x10 459 #define ICMP6_RR_FLAGS_PREVDONE 0x08 460 461 #define rr_type rr_hdr.icmp6_type 462 #define rr_code rr_hdr.icmp6_code 463 #define rr_cksum rr_hdr.icmp6_cksum 464 #define rr_seqnum rr_hdr.icmp6_data32[0] 465 466 struct rr_pco_match { /* match prefix part */ 467 u_int8_t rpm_code; 468 u_int8_t rpm_len; 469 u_int8_t rpm_ordinal; 470 u_int8_t rpm_matchlen; 471 u_int8_t rpm_minlen; 472 u_int8_t rpm_maxlen; 473 u_int16_t rpm_reserved; 474 struct in6_addr rpm_prefix; 475 } __attribute__((__packed__)); 476 477 #define RPM_PCO_ADD 1 478 #define RPM_PCO_CHANGE 2 479 #define RPM_PCO_SETGLOBAL 3 480 #define RPM_PCO_MAX 4 481 482 struct rr_pco_use { /* use prefix part */ 483 u_int8_t rpu_uselen; 484 u_int8_t rpu_keeplen; 485 u_int8_t rpu_ramask; 486 u_int8_t rpu_raflags; 487 u_int32_t rpu_vltime; 488 u_int32_t rpu_pltime; 489 u_int32_t rpu_flags; 490 struct in6_addr rpu_prefix; 491 } __attribute__((__packed__)); 492 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 493 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 494 495 #if _BYTE_ORDER == _BIG_ENDIAN 496 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 497 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 498 #elif _BYTE_ORDER == _LITTLE_ENDIAN 499 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 500 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 501 #else 502 #error "Byte order not implemented" 503 #endif 504 505 struct rr_result { /* router renumbering result message */ 506 u_int16_t rrr_flags; 507 u_int8_t rrr_ordinal; 508 u_int8_t rrr_matchedlen; 509 u_int32_t rrr_ifid; 510 struct in6_addr rrr_prefix; 511 } __attribute__((__packed__)); 512 #if _BYTE_ORDER == _BIG_ENDIAN 513 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 514 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 515 #elif _BYTE_ORDER == _LITTLE_ENDIAN 516 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 517 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 518 #else 519 #error "Byte order not implemented" 520 #endif 521 522 /* 523 * icmp6 filter structures. 524 */ 525 526 struct icmp6_filter { 527 u_int32_t icmp6_filt[8]; 528 }; 529 530 #ifdef _KERNEL 531 #define ICMP6_FILTER_SETPASSALL(filterp) \ 532 do { \ 533 int i; u_char *p; \ 534 p = (u_char *)filterp; \ 535 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 536 p[i] = 0xff; \ 537 } while (0) 538 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 539 bzero(filterp, sizeof(struct icmp6_filter)) 540 #else /* _KERNEL */ 541 #define ICMP6_FILTER_SETPASSALL(filterp) \ 542 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 543 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 544 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 545 #endif /* _KERNEL */ 546 547 #define ICMP6_FILTER_SETPASS(type, filterp) \ 548 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 549 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 550 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 551 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 552 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 553 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 554 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 555 556 /* 557 * Variables related to this implementation 558 * of the internet control message protocol version 6. 559 */ 560 struct icmp6errstat { 561 u_quad_t icp6errs_dst_unreach_noroute; 562 u_quad_t icp6errs_dst_unreach_admin; 563 u_quad_t icp6errs_dst_unreach_beyondscope; 564 u_quad_t icp6errs_dst_unreach_addr; 565 u_quad_t icp6errs_dst_unreach_noport; 566 u_quad_t icp6errs_packet_too_big; 567 u_quad_t icp6errs_time_exceed_transit; 568 u_quad_t icp6errs_time_exceed_reassembly; 569 u_quad_t icp6errs_paramprob_header; 570 u_quad_t icp6errs_paramprob_nextheader; 571 u_quad_t icp6errs_paramprob_option; 572 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 573 u_quad_t icp6errs_unknown; 574 }; 575 576 struct icmp6stat { 577 /* statistics related to icmp6 packets generated */ 578 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 579 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 580 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 581 u_quad_t icp6s_outhist[256]; 582 /* statistics related to input message processed */ 583 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 584 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 585 u_quad_t icp6s_checksum; /* bad checksum */ 586 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 587 /* 588 * number of responses: this member is inherited from netinet code, but 589 * for netinet6 code, it is already available in icp6s_outhist[]. 590 */ 591 u_quad_t icp6s_reflect; 592 u_quad_t icp6s_inhist[256]; 593 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 594 struct icmp6errstat icp6s_outerrhist; 595 #define icp6s_odst_unreach_noroute \ 596 icp6s_outerrhist.icp6errs_dst_unreach_noroute 597 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 598 #define icp6s_odst_unreach_beyondscope \ 599 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 600 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 601 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 602 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 603 #define icp6s_otime_exceed_transit \ 604 icp6s_outerrhist.icp6errs_time_exceed_transit 605 #define icp6s_otime_exceed_reassembly \ 606 icp6s_outerrhist.icp6errs_time_exceed_reassembly 607 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 608 #define icp6s_oparamprob_nextheader \ 609 icp6s_outerrhist.icp6errs_paramprob_nextheader 610 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 611 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 612 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 613 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 614 u_quad_t icp6s_nd_badopt; /* bad ND options */ 615 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 616 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 617 u_quad_t icp6s_badrs; /* bad router advertisement */ 618 u_quad_t icp6s_badra; /* bad router advertisement */ 619 u_quad_t icp6s_badredirect; /* bad redirect message */ 620 }; 621 622 /* 623 * Names for ICMP sysctl objects 624 */ 625 #define ICMPV6CTL_STATS 1 626 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 627 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 628 #if 0 /*obsoleted*/ 629 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 630 #endif 631 #define ICMPV6CTL_ND6_PRUNE 6 632 #define ICMPV6CTL_ND6_DELAY 8 633 #define ICMPV6CTL_ND6_UMAXTRIES 9 634 #define ICMPV6CTL_ND6_MMAXTRIES 10 635 #define ICMPV6CTL_ND6_USELOOPBACK 11 636 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 637 #define ICMPV6CTL_NODEINFO 13 638 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 639 #define ICMPV6CTL_ND6_MAXNUDHINT 15 640 #define ICMPV6CTL_MTUDISC_HIWAT 16 641 #define ICMPV6CTL_MTUDISC_LOWAT 17 642 #define ICMPV6CTL_ND6_DEBUG 18 643 #define ICMPV6CTL_ND6_DRLIST 19 644 #define ICMPV6CTL_ND6_PRLIST 20 645 #define ICMPV6CTL_MAXID 21 646 647 #define ICMPV6CTL_NAMES { \ 648 { 0, 0 }, \ 649 { 0, 0 }, \ 650 { "rediraccept", CTLTYPE_INT }, \ 651 { "redirtimeout", CTLTYPE_INT }, \ 652 { 0, 0 }, \ 653 { 0, 0 }, \ 654 { "nd6_prune", CTLTYPE_INT }, \ 655 { 0, 0 }, \ 656 { "nd6_delay", CTLTYPE_INT }, \ 657 { "nd6_umaxtries", CTLTYPE_INT }, \ 658 { "nd6_mmaxtries", CTLTYPE_INT }, \ 659 { "nd6_useloopback", CTLTYPE_INT }, \ 660 { 0, 0 }, \ 661 { "nodeinfo", CTLTYPE_INT }, \ 662 { "errppslimit", CTLTYPE_INT }, \ 663 { "nd6_maxnudhint", CTLTYPE_INT }, \ 664 { "mtudisc_hiwat", CTLTYPE_INT }, \ 665 { "mtudisc_lowat", CTLTYPE_INT }, \ 666 { "nd6_debug", CTLTYPE_INT }, \ 667 { 0, 0 }, \ 668 { 0, 0 }, \ 669 } 670 671 #define RTF_PROBEMTU RTF_PROTO1 672 673 #ifdef _KERNEL 674 struct rtentry; 675 struct rttimer; 676 struct in6_multi; 677 678 void icmp6_init (void); 679 void icmp6_paramerror (struct mbuf *, int); 680 void icmp6_error (struct mbuf *, int, int, int); 681 int icmp6_input (struct mbuf **, int *, int); 682 void icmp6_fasttimo (void); 683 void icmp6_reflect (struct mbuf *, size_t); 684 void icmp6_prepare (struct mbuf *); 685 void icmp6_redirect_input (struct mbuf *, int); 686 void icmp6_redirect_output (struct mbuf *, struct rtentry *); 687 688 struct ip6ctlparam; 689 void icmp6_mtudisc_update (struct ip6ctlparam *, int); 690 691 /* XXX: is this the right place for these macros? */ 692 #define icmp6_ifstat_inc(ifp, tag) \ 693 do { \ 694 if (ifp) \ 695 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 696 } while (0) 697 698 #define icmp6_ifoutstat_inc(ifp, type, code) \ 699 do { \ 700 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 701 if (type < ICMP6_INFOMSG_MASK) \ 702 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 703 switch (type) { \ 704 case ICMP6_DST_UNREACH: \ 705 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 706 if (code == ICMP6_DST_UNREACH_ADMIN) \ 707 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 708 break; \ 709 case ICMP6_PACKET_TOO_BIG: \ 710 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 711 break; \ 712 case ICMP6_TIME_EXCEEDED: \ 713 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 714 break; \ 715 case ICMP6_PARAM_PROB: \ 716 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 717 break; \ 718 case ICMP6_ECHO_REQUEST: \ 719 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 720 break; \ 721 case ICMP6_ECHO_REPLY: \ 722 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 723 break; \ 724 case MLD_LISTENER_QUERY: \ 725 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 726 break; \ 727 case MLD_LISTENER_REPORT: \ 728 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 729 break; \ 730 case MLD_LISTENER_DONE: \ 731 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 732 break; \ 733 case ND_ROUTER_SOLICIT: \ 734 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 735 break; \ 736 case ND_ROUTER_ADVERT: \ 737 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 738 break; \ 739 case ND_NEIGHBOR_SOLICIT: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 741 break; \ 742 case ND_NEIGHBOR_ADVERT: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 744 break; \ 745 case ND_REDIRECT: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 747 break; \ 748 } \ 749 } while (0) 750 751 extern int icmp6_rediraccept; /* accept/process redirects */ 752 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 753 #endif /* _KERNEL */ 754 755 #endif /* not _NETINET_ICMP6_H_ */ 756