1 /* $FreeBSD$ */ 2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the project nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /*- 36 * Copyright (c) 1982, 1986, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 64 */ 65 66 #ifndef _NETINET_ICMP6_H_ 67 #define _NETINET_ICMP6_H_ 68 69 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 70 - sizeof(struct icmp6_hdr) */ 71 72 struct icmp6_hdr { 73 u_int8_t icmp6_type; /* type field */ 74 u_int8_t icmp6_code; /* code field */ 75 u_int16_t icmp6_cksum; /* checksum field */ 76 union { 77 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 78 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 79 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 80 } icmp6_dataun; 81 } __packed; 82 83 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 84 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 85 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 86 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 87 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 88 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 89 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 90 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 91 92 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 93 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 94 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 95 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 96 97 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 98 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 99 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 100 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 101 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 102 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 103 104 /* RFC2292 decls */ 105 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 106 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 107 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 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 advertisement */ 118 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 119 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 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 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 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 #define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 150 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 151 #define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 152 153 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 154 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 155 156 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 157 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 158 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 159 160 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 161 162 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 163 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 164 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 165 166 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 167 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 168 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 169 170 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 171 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 172 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 173 174 /* Used in kernel only */ 175 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 176 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 177 178 /* 179 * Multicast Listener Discovery 180 */ 181 struct mld_hdr { 182 struct icmp6_hdr mld_icmp6_hdr; 183 struct in6_addr mld_addr; /* multicast address */ 184 } __packed; 185 186 /* definitions to provide backward compatibility to old KAME applications */ 187 #ifndef _KERNEL 188 #define mld6_hdr mld_hdr 189 #define mld6_type mld_type 190 #define mld6_code mld_code 191 #define mld6_cksum mld_cksum 192 #define mld6_maxdelay mld_maxdelay 193 #define mld6_reserved mld_reserved 194 #define mld6_addr mld_addr 195 #endif 196 197 /* shortcut macro definitions */ 198 #define mld_type mld_icmp6_hdr.icmp6_type 199 #define mld_code mld_icmp6_hdr.icmp6_code 200 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 201 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 202 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 203 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 204 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 205 206 /* 207 * Neighbor Discovery 208 */ 209 210 struct nd_router_solicit { /* router solicitation */ 211 struct icmp6_hdr nd_rs_hdr; 212 /* could be followed by options */ 213 } __packed; 214 215 #define nd_rs_type nd_rs_hdr.icmp6_type 216 #define nd_rs_code nd_rs_hdr.icmp6_code 217 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 218 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 219 220 struct nd_router_advert { /* router advertisement */ 221 struct icmp6_hdr nd_ra_hdr; 222 u_int32_t nd_ra_reachable; /* reachable time */ 223 u_int32_t nd_ra_retransmit; /* retransmit timer */ 224 /* could be followed by options */ 225 } __packed; 226 227 #define nd_ra_type nd_ra_hdr.icmp6_type 228 #define nd_ra_code nd_ra_hdr.icmp6_code 229 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 230 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 231 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 232 #define ND_RA_FLAG_MANAGED 0x80 233 #define ND_RA_FLAG_OTHER 0x40 234 #define ND_RA_FLAG_HA 0x20 235 236 /* 237 * Router preference values based on draft-draves-ipngwg-router-selection-01. 238 * These are non-standard definitions. 239 */ 240 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 241 242 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 243 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 244 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 245 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 246 247 #ifdef EXPERIMENTAL 248 #define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */ 249 #endif 250 251 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 252 253 struct nd_neighbor_solicit { /* neighbor solicitation */ 254 struct icmp6_hdr nd_ns_hdr; 255 struct in6_addr nd_ns_target; /*target address */ 256 /* could be followed by options */ 257 } __packed; 258 259 #define nd_ns_type nd_ns_hdr.icmp6_type 260 #define nd_ns_code nd_ns_hdr.icmp6_code 261 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 262 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 263 264 struct nd_neighbor_advert { /* neighbor advertisement */ 265 struct icmp6_hdr nd_na_hdr; 266 struct in6_addr nd_na_target; /* target address */ 267 /* could be followed by options */ 268 } __packed; 269 270 #define nd_na_type nd_na_hdr.icmp6_type 271 #define nd_na_code nd_na_hdr.icmp6_code 272 #define nd_na_cksum nd_na_hdr.icmp6_cksum 273 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 274 #if BYTE_ORDER == BIG_ENDIAN 275 #define ND_NA_FLAG_ROUTER 0x80000000 276 #define ND_NA_FLAG_SOLICITED 0x40000000 277 #define ND_NA_FLAG_OVERRIDE 0x20000000 278 #else 279 #if 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 #endif 284 #endif 285 286 struct nd_redirect { /* redirect */ 287 struct icmp6_hdr nd_rd_hdr; 288 struct in6_addr nd_rd_target; /* target address */ 289 struct in6_addr nd_rd_dst; /* destination address */ 290 /* could be followed by options */ 291 } __packed; 292 293 #define nd_rd_type nd_rd_hdr.icmp6_type 294 #define nd_rd_code nd_rd_hdr.icmp6_code 295 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 296 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 297 298 struct nd_opt_hdr { /* Neighbor discovery option header */ 299 u_int8_t nd_opt_type; 300 u_int8_t nd_opt_len; 301 /* followed by option specific data*/ 302 } __packed; 303 304 #define ND_OPT_SOURCE_LINKADDR 1 305 #define ND_OPT_TARGET_LINKADDR 2 306 #define ND_OPT_PREFIX_INFORMATION 3 307 #define ND_OPT_REDIRECTED_HEADER 4 308 #define ND_OPT_MTU 5 309 #define ND_OPT_NONCE 14 /* RFC 3971 */ 310 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 311 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 312 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 313 #define ND_OPT_MAX 31 314 315 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 } __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 } __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 } __packed; 343 344 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 345 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 346 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 347 #endif 348 struct nd_opt_nonce { /* nonce option */ 349 u_int8_t nd_opt_nonce_type; 350 u_int8_t nd_opt_nonce_len; 351 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 352 } __packed; 353 354 struct nd_opt_route_info { /* route info */ 355 u_int8_t nd_opt_rti_type; 356 u_int8_t nd_opt_rti_len; 357 u_int8_t nd_opt_rti_prefixlen; 358 u_int8_t nd_opt_rti_flags; 359 u_int32_t nd_opt_rti_lifetime; 360 /* prefix follows */ 361 } __packed; 362 363 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 364 u_int8_t nd_opt_rdnss_type; 365 u_int8_t nd_opt_rdnss_len; 366 u_int16_t nd_opt_rdnss_reserved; 367 u_int32_t nd_opt_rdnss_lifetime; 368 /* followed by list of recursive DNS servers */ 369 } __packed; 370 371 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 372 u_int8_t nd_opt_dnssl_type; 373 u_int8_t nd_opt_dnssl_len; 374 u_int16_t nd_opt_dnssl_reserved; 375 u_int32_t nd_opt_dnssl_lifetime; 376 /* followed by list of DNS search domains */ 377 } __packed; 378 379 /* 380 * icmp6 namelookup 381 */ 382 383 struct icmp6_namelookup { 384 struct icmp6_hdr icmp6_nl_hdr; 385 u_int8_t icmp6_nl_nonce[8]; 386 int32_t icmp6_nl_ttl; 387 #if 0 388 u_int8_t icmp6_nl_len; 389 u_int8_t icmp6_nl_name[3]; 390 #endif 391 /* could be followed by options */ 392 } __packed; 393 394 /* 395 * icmp6 node information 396 */ 397 struct icmp6_nodeinfo { 398 struct icmp6_hdr icmp6_ni_hdr; 399 u_int8_t icmp6_ni_nonce[8]; 400 /* could be followed by reply data */ 401 } __packed; 402 403 #define ni_type icmp6_ni_hdr.icmp6_type 404 #define ni_code icmp6_ni_hdr.icmp6_code 405 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 406 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 407 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 408 409 #define NI_QTYPE_NOOP 0 /* NOOP */ 410 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 411 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 412 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 413 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 414 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 415 416 #if BYTE_ORDER == BIG_ENDIAN 417 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 418 #define NI_FQDN_FLAG_VALIDTTL 0x1 419 #elif BYTE_ORDER == LITTLE_ENDIAN 420 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 421 #define NI_FQDN_FLAG_VALIDTTL 0x0100 422 #endif 423 424 #ifdef NAME_LOOKUPS_04 425 #if BYTE_ORDER == BIG_ENDIAN 426 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 427 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 428 #define NI_NODEADDR_FLAG_GLOBAL 0x4 429 #define NI_NODEADDR_FLAG_ALL 0x8 430 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 431 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 432 #elif BYTE_ORDER == LITTLE_ENDIAN 433 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 434 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 435 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 436 #define NI_NODEADDR_FLAG_ALL 0x0800 437 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 438 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 439 #endif 440 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 441 #if BYTE_ORDER == BIG_ENDIAN 442 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 443 #define NI_NODEADDR_FLAG_ALL 0x2 444 #define NI_NODEADDR_FLAG_COMPAT 0x4 445 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 446 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 447 #define NI_NODEADDR_FLAG_GLOBAL 0x20 448 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 449 #elif BYTE_ORDER == LITTLE_ENDIAN 450 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 451 #define NI_NODEADDR_FLAG_ALL 0x0200 452 #define NI_NODEADDR_FLAG_COMPAT 0x0400 453 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 454 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 455 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 456 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 457 #endif 458 #endif 459 460 struct ni_reply_fqdn { 461 u_int32_t ni_fqdn_ttl; /* TTL */ 462 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 463 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 464 } __packed; 465 466 /* 467 * Router Renumbering. as router-renum-08.txt 468 */ 469 struct icmp6_router_renum { /* router renumbering header */ 470 struct icmp6_hdr rr_hdr; 471 u_int8_t rr_segnum; 472 u_int8_t rr_flags; 473 u_int16_t rr_maxdelay; 474 u_int32_t rr_reserved; 475 } __packed; 476 477 #define ICMP6_RR_FLAGS_TEST 0x80 478 #define ICMP6_RR_FLAGS_REQRESULT 0x40 479 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 480 #define ICMP6_RR_FLAGS_SPECSITE 0x10 481 #define ICMP6_RR_FLAGS_PREVDONE 0x08 482 483 #define rr_type rr_hdr.icmp6_type 484 #define rr_code rr_hdr.icmp6_code 485 #define rr_cksum rr_hdr.icmp6_cksum 486 #define rr_seqnum rr_hdr.icmp6_data32[0] 487 488 struct rr_pco_match { /* match prefix part */ 489 u_int8_t rpm_code; 490 u_int8_t rpm_len; 491 u_int8_t rpm_ordinal; 492 u_int8_t rpm_matchlen; 493 u_int8_t rpm_minlen; 494 u_int8_t rpm_maxlen; 495 u_int16_t rpm_reserved; 496 struct in6_addr rpm_prefix; 497 } __packed; 498 499 #define RPM_PCO_ADD 1 500 #define RPM_PCO_CHANGE 2 501 #define RPM_PCO_SETGLOBAL 3 502 #define RPM_PCO_MAX 4 503 504 struct rr_pco_use { /* use prefix part */ 505 u_int8_t rpu_uselen; 506 u_int8_t rpu_keeplen; 507 u_int8_t rpu_ramask; 508 u_int8_t rpu_raflags; 509 u_int32_t rpu_vltime; 510 u_int32_t rpu_pltime; 511 u_int32_t rpu_flags; 512 struct in6_addr rpu_prefix; 513 } __packed; 514 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 515 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 516 517 #if BYTE_ORDER == BIG_ENDIAN 518 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 519 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 520 #elif BYTE_ORDER == LITTLE_ENDIAN 521 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 522 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 523 #endif 524 525 struct rr_result { /* router renumbering result message */ 526 u_int16_t rrr_flags; 527 u_int8_t rrr_ordinal; 528 u_int8_t rrr_matchedlen; 529 u_int32_t rrr_ifid; 530 struct in6_addr rrr_prefix; 531 } __packed; 532 #if BYTE_ORDER == BIG_ENDIAN 533 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 534 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 535 #elif BYTE_ORDER == LITTLE_ENDIAN 536 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 537 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 538 #endif 539 540 /* 541 * icmp6 filter structures. 542 */ 543 544 struct icmp6_filter { 545 u_int32_t icmp6_filt[8]; 546 }; 547 548 #ifdef _KERNEL 549 #define ICMP6_FILTER_SETPASSALL(filterp) \ 550 do { \ 551 int i; u_char *p; \ 552 p = (u_char *)filterp; \ 553 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 554 p[i] = 0xff; \ 555 } while (/*CONSTCOND*/ 0) 556 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 557 bzero(filterp, sizeof(struct icmp6_filter)) 558 #else /* _KERNEL */ 559 #define ICMP6_FILTER_SETPASSALL(filterp) \ 560 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 561 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 562 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 563 #endif /* _KERNEL */ 564 565 #define ICMP6_FILTER_SETPASS(type, filterp) \ 566 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 567 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 568 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 569 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 570 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 571 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 572 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 573 574 /* 575 * Variables related to this implementation 576 * of the internet control message protocol version 6. 577 */ 578 struct icmp6errstat { 579 uint64_t icp6errs_dst_unreach_noroute; 580 uint64_t icp6errs_dst_unreach_admin; 581 uint64_t icp6errs_dst_unreach_beyondscope; 582 uint64_t icp6errs_dst_unreach_addr; 583 uint64_t icp6errs_dst_unreach_noport; 584 uint64_t icp6errs_packet_too_big; 585 uint64_t icp6errs_time_exceed_transit; 586 uint64_t icp6errs_time_exceed_reassembly; 587 uint64_t icp6errs_paramprob_header; 588 uint64_t icp6errs_paramprob_nextheader; 589 uint64_t icp6errs_paramprob_option; 590 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 591 uint64_t icp6errs_unknown; 592 }; 593 594 struct icmp6stat { 595 /* statistics related to icmp6 packets generated */ 596 uint64_t icp6s_error; /* # of calls to icmp6_error */ 597 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 598 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 599 uint64_t icp6s_outhist[256]; 600 /* statistics related to input message processed */ 601 uint64_t icp6s_badcode; /* icmp6_code out of range */ 602 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 603 uint64_t icp6s_checksum; /* bad checksum */ 604 uint64_t icp6s_badlen; /* calculated bound mismatch */ 605 uint64_t icp6s_dropped; /* # of packets dropped waiting for a resolution */ 606 /* 607 * number of responses: this member is inherited from netinet code, but 608 * for netinet6 code, it is already available in icp6s_outhist[]. 609 */ 610 uint64_t icp6s_reflect; 611 uint64_t icp6s_inhist[256]; 612 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 613 struct icmp6errstat icp6s_outerrhist; 614 #define icp6s_odst_unreach_noroute \ 615 icp6s_outerrhist.icp6errs_dst_unreach_noroute 616 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 617 #define icp6s_odst_unreach_beyondscope \ 618 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 619 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 620 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 621 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 622 #define icp6s_otime_exceed_transit \ 623 icp6s_outerrhist.icp6errs_time_exceed_transit 624 #define icp6s_otime_exceed_reassembly \ 625 icp6s_outerrhist.icp6errs_time_exceed_reassembly 626 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 627 #define icp6s_oparamprob_nextheader \ 628 icp6s_outerrhist.icp6errs_paramprob_nextheader 629 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 630 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 631 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 632 uint64_t icp6s_pmtuchg; /* path MTU changes */ 633 uint64_t icp6s_nd_badopt; /* bad ND options */ 634 uint64_t icp6s_badns; /* bad neighbor solicitation */ 635 uint64_t icp6s_badna; /* bad neighbor advertisement */ 636 uint64_t icp6s_badrs; /* bad router solicitation */ 637 uint64_t icp6s_badra; /* bad router advertisement */ 638 uint64_t icp6s_badredirect; /* bad redirect message */ 639 uint64_t icp6s_overflowdefrtr; /* Too many default routers. */ 640 uint64_t icp6s_overflowprfx; /* Too many prefixes. */ 641 uint64_t icp6s_overflownndp; /* Too many neighbour entries. */ 642 uint64_t icp6s_overflowredirect;/* Too many redirects. */ 643 uint64_t icp6s_invlhlim; /* Invalid hop limit. */ 644 uint64_t icp6s_spare[32]; 645 }; 646 647 #ifdef _KERNEL 648 #include <sys/counter.h> 649 650 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 651 /* 652 * In-kernel consumers can use these accessor macros directly to update 653 * stats. 654 */ 655 #define ICMP6STAT_ADD(name, val) \ 656 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 657 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 658 659 /* 660 * Kernel module consumers must use this accessor macro. 661 */ 662 void kmod_icmp6stat_inc(int statnum); 663 #define KMOD_ICMP6STAT_INC(name) \ 664 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 665 #endif 666 667 /* 668 * Names for ICMP sysctl objects 669 */ 670 #define ICMPV6CTL_STATS 1 671 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 672 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 673 #if 0 /*obsoleted*/ 674 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 675 #endif 676 #define ICMPV6CTL_ND6_PRUNE 6 677 #define ICMPV6CTL_ND6_DELAY 8 678 #define ICMPV6CTL_ND6_UMAXTRIES 9 679 #define ICMPV6CTL_ND6_MMAXTRIES 10 680 #define ICMPV6CTL_ND6_USELOOPBACK 11 681 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 682 #define ICMPV6CTL_NODEINFO 13 683 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 684 #define ICMPV6CTL_ND6_MAXNUDHINT 15 685 #define ICMPV6CTL_MTUDISC_HIWAT 16 686 #define ICMPV6CTL_MTUDISC_LOWAT 17 687 #define ICMPV6CTL_ND6_DEBUG 18 688 #define ICMPV6CTL_ND6_DRLIST 19 689 #define ICMPV6CTL_ND6_PRLIST 20 690 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 691 #define ICMPV6CTL_MLD_SOMAXSRC 22 692 #define ICMPV6CTL_MLD_VERSION 23 693 #define ICMPV6CTL_ND6_MAXQLEN 24 694 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 695 #define ICMPV6CTL_MAXID 26 696 697 #ifdef _KERNEL 698 # ifdef __STDC__ 699 struct nhop_object; 700 struct rttimer; 701 struct in6_multi; 702 # endif 703 void icmp6_paramerror(struct mbuf *, int); 704 int icmp6_errmap(const struct icmp6_hdr *); 705 void icmp6_error(struct mbuf *, int, int, int); 706 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 707 int icmp6_input(struct mbuf **, int *, int); 708 void icmp6_prepare(struct mbuf *); 709 void icmp6_redirect_input(struct mbuf *, int); 710 void icmp6_redirect_output(struct mbuf *, struct nhop_object *); 711 int icmp6_ratelimit(const struct in6_addr *, const int, const int); 712 713 struct ip6ctlparam; 714 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 715 716 /* XXX: is this the right place for these macros? */ 717 #define icmp6_ifstat_inc(ifp, tag) \ 718 do { \ 719 if (ifp) \ 720 counter_u64_add(((struct in6_ifextra *) \ 721 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 722 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 723 } while (/*CONSTCOND*/ 0) 724 725 #define icmp6_ifoutstat_inc(ifp, type, code) \ 726 do { \ 727 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 728 if (type < ICMP6_INFOMSG_MASK) \ 729 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 730 switch (type) { \ 731 case ICMP6_DST_UNREACH: \ 732 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 733 if (code == ICMP6_DST_UNREACH_ADMIN) \ 734 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 735 break; \ 736 case ICMP6_PACKET_TOO_BIG: \ 737 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 738 break; \ 739 case ICMP6_TIME_EXCEEDED: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 741 break; \ 742 case ICMP6_PARAM_PROB: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 744 break; \ 745 case ICMP6_ECHO_REQUEST: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 747 break; \ 748 case ICMP6_ECHO_REPLY: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 750 break; \ 751 case MLD_LISTENER_QUERY: \ 752 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 753 break; \ 754 case MLD_LISTENER_REPORT: \ 755 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 756 break; \ 757 case MLD_LISTENER_DONE: \ 758 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 759 break; \ 760 case ND_ROUTER_SOLICIT: \ 761 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 762 break; \ 763 case ND_ROUTER_ADVERT: \ 764 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 765 break; \ 766 case ND_NEIGHBOR_SOLICIT: \ 767 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 768 break; \ 769 case ND_NEIGHBOR_ADVERT: \ 770 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 771 break; \ 772 case ND_REDIRECT: \ 773 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 774 break; \ 775 } \ 776 } while (/*CONSTCOND*/ 0) 777 778 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 779 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 780 781 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 782 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 783 784 #define ICMP6_NODEINFO_FQDNOK 0x1 785 #define ICMP6_NODEINFO_NODEADDROK 0x2 786 #define ICMP6_NODEINFO_TMPADDROK 0x4 787 #define ICMP6_NODEINFO_GLOBALOK 0x8 788 #endif /* _KERNEL */ 789 790 #endif /* not _NETINET_ICMP6_H_ */ 791