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 #ifdef FSTACK 70 #define __packed __attribute__((__packed__)) 71 #endif 72 73 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 74 - sizeof(struct icmp6_hdr) */ 75 76 struct icmp6_hdr { 77 u_int8_t icmp6_type; /* type field */ 78 u_int8_t icmp6_code; /* code field */ 79 u_int16_t icmp6_cksum; /* checksum field */ 80 union { 81 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 82 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 83 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 84 } icmp6_dataun; 85 } __packed; 86 87 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 88 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 89 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 90 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 91 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 92 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 93 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 94 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 95 96 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 97 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 98 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 99 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 100 101 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 102 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 103 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 104 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 105 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 106 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ 107 108 /* RFC2292 decls */ 109 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 110 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 111 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 112 113 #ifndef _KERNEL 114 /* the followings are for backward compatibility to old KAME apps. */ 115 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 116 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 117 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 118 #endif 119 120 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 121 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 122 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 123 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 124 #define ND_REDIRECT 137 /* redirect */ 125 126 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 127 128 #define ICMP6_WRUREQUEST 139 /* who are you request */ 129 #define ICMP6_WRUREPLY 140 /* who are you reply */ 130 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 131 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 132 #define ICMP6_NI_QUERY 139 /* node information request */ 133 #define ICMP6_NI_REPLY 140 /* node information reply */ 134 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 135 136 /* The definitions below are experimental. TBA */ 137 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 138 #define MLD_MTRACE 201 /* mtrace messages */ 139 140 #ifndef _KERNEL 141 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 142 #define MLD6_MTRACE MLD_MTRACE 143 #endif 144 145 #define ICMP6_MAXTYPE 201 146 147 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 148 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 149 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 150 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 151 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 152 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 153 #define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */ 154 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */ 155 #define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */ 156 157 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 158 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 159 160 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 161 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 162 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 163 164 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 165 166 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 167 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 168 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 169 170 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 171 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 172 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 173 174 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 175 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 176 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 177 178 /* Used in kernel only */ 179 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 180 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 181 182 /* 183 * Multicast Listener Discovery 184 */ 185 struct mld_hdr { 186 struct icmp6_hdr mld_icmp6_hdr; 187 struct in6_addr mld_addr; /* multicast address */ 188 } __packed; 189 190 /* definitions to provide backward compatibility to old KAME applications */ 191 #ifndef _KERNEL 192 #define mld6_hdr mld_hdr 193 #define mld6_type mld_type 194 #define mld6_code mld_code 195 #define mld6_cksum mld_cksum 196 #define mld6_maxdelay mld_maxdelay 197 #define mld6_reserved mld_reserved 198 #define mld6_addr mld_addr 199 #endif 200 201 /* shortcut macro definitions */ 202 #define mld_type mld_icmp6_hdr.icmp6_type 203 #define mld_code mld_icmp6_hdr.icmp6_code 204 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 205 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 206 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 207 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] 208 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] 209 210 /* 211 * Neighbor Discovery 212 */ 213 214 struct nd_router_solicit { /* router solicitation */ 215 struct icmp6_hdr nd_rs_hdr; 216 /* could be followed by options */ 217 } __packed; 218 219 #define nd_rs_type nd_rs_hdr.icmp6_type 220 #define nd_rs_code nd_rs_hdr.icmp6_code 221 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 222 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 223 224 struct nd_router_advert { /* router advertisement */ 225 struct icmp6_hdr nd_ra_hdr; 226 u_int32_t nd_ra_reachable; /* reachable time */ 227 u_int32_t nd_ra_retransmit; /* retransmit timer */ 228 /* could be followed by options */ 229 } __packed; 230 231 #define nd_ra_type nd_ra_hdr.icmp6_type 232 #define nd_ra_code nd_ra_hdr.icmp6_code 233 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 234 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 235 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 236 #define ND_RA_FLAG_MANAGED 0x80 237 #define ND_RA_FLAG_OTHER 0x40 238 #define ND_RA_FLAG_HA 0x20 239 240 /* 241 * Router preference values based on draft-draves-ipngwg-router-selection-01. 242 * These are non-standard definitions. 243 */ 244 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 245 246 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 247 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 248 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 249 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 250 251 #ifdef EXPERIMENTAL 252 #define ND_RA_FLAG_IPV6_ONLY 0x02 /* draft-ietf-6man-ipv6only-flag */ 253 #endif 254 255 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 256 257 struct nd_neighbor_solicit { /* neighbor solicitation */ 258 struct icmp6_hdr nd_ns_hdr; 259 struct in6_addr nd_ns_target; /*target address */ 260 /* could be followed by options */ 261 } __packed; 262 263 #define nd_ns_type nd_ns_hdr.icmp6_type 264 #define nd_ns_code nd_ns_hdr.icmp6_code 265 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 266 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 267 268 struct nd_neighbor_advert { /* neighbor advertisement */ 269 struct icmp6_hdr nd_na_hdr; 270 struct in6_addr nd_na_target; /* target address */ 271 /* could be followed by options */ 272 } __packed; 273 274 #define nd_na_type nd_na_hdr.icmp6_type 275 #define nd_na_code nd_na_hdr.icmp6_code 276 #define nd_na_cksum nd_na_hdr.icmp6_cksum 277 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 278 #if BYTE_ORDER == BIG_ENDIAN 279 #define ND_NA_FLAG_ROUTER 0x80000000 280 #define ND_NA_FLAG_SOLICITED 0x40000000 281 #define ND_NA_FLAG_OVERRIDE 0x20000000 282 #else 283 #if BYTE_ORDER == LITTLE_ENDIAN 284 #define ND_NA_FLAG_ROUTER 0x80 285 #define ND_NA_FLAG_SOLICITED 0x40 286 #define ND_NA_FLAG_OVERRIDE 0x20 287 #endif 288 #endif 289 290 struct nd_redirect { /* redirect */ 291 struct icmp6_hdr nd_rd_hdr; 292 struct in6_addr nd_rd_target; /* target address */ 293 struct in6_addr nd_rd_dst; /* destination address */ 294 /* could be followed by options */ 295 } __packed; 296 297 #define nd_rd_type nd_rd_hdr.icmp6_type 298 #define nd_rd_code nd_rd_hdr.icmp6_code 299 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 300 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 301 302 struct nd_opt_hdr { /* Neighbor discovery option header */ 303 u_int8_t nd_opt_type; 304 u_int8_t nd_opt_len; 305 /* followed by option specific data*/ 306 } __packed; 307 308 #define ND_OPT_SOURCE_LINKADDR 1 309 #define ND_OPT_TARGET_LINKADDR 2 310 #define ND_OPT_PREFIX_INFORMATION 3 311 #define ND_OPT_REDIRECTED_HEADER 4 312 #define ND_OPT_MTU 5 313 #define ND_OPT_NONCE 14 /* RFC 3971 */ 314 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 315 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 316 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 317 #define ND_OPT_MAX 31 318 319 struct nd_opt_prefix_info { /* prefix information */ 320 u_int8_t nd_opt_pi_type; 321 u_int8_t nd_opt_pi_len; 322 u_int8_t nd_opt_pi_prefix_len; 323 u_int8_t nd_opt_pi_flags_reserved; 324 u_int32_t nd_opt_pi_valid_time; 325 u_int32_t nd_opt_pi_preferred_time; 326 u_int32_t nd_opt_pi_reserved2; 327 struct in6_addr nd_opt_pi_prefix; 328 } __packed; 329 330 #define ND_OPT_PI_FLAG_ONLINK 0x80 331 #define ND_OPT_PI_FLAG_AUTO 0x40 332 333 struct nd_opt_rd_hdr { /* redirected header */ 334 u_int8_t nd_opt_rh_type; 335 u_int8_t nd_opt_rh_len; 336 u_int16_t nd_opt_rh_reserved1; 337 u_int32_t nd_opt_rh_reserved2; 338 /* followed by IP header and data */ 339 } __packed; 340 341 struct nd_opt_mtu { /* MTU option */ 342 u_int8_t nd_opt_mtu_type; 343 u_int8_t nd_opt_mtu_len; 344 u_int16_t nd_opt_mtu_reserved; 345 u_int32_t nd_opt_mtu_mtu; 346 } __packed; 347 348 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 349 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 350 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 351 #endif 352 struct nd_opt_nonce { /* nonce option */ 353 u_int8_t nd_opt_nonce_type; 354 u_int8_t nd_opt_nonce_len; 355 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 356 } __packed; 357 358 struct nd_opt_route_info { /* route info */ 359 u_int8_t nd_opt_rti_type; 360 u_int8_t nd_opt_rti_len; 361 u_int8_t nd_opt_rti_prefixlen; 362 u_int8_t nd_opt_rti_flags; 363 u_int32_t nd_opt_rti_lifetime; 364 /* prefix follows */ 365 } __packed; 366 367 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 368 u_int8_t nd_opt_rdnss_type; 369 u_int8_t nd_opt_rdnss_len; 370 u_int16_t nd_opt_rdnss_reserved; 371 u_int32_t nd_opt_rdnss_lifetime; 372 /* followed by list of recursive DNS servers */ 373 } __packed; 374 375 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 376 u_int8_t nd_opt_dnssl_type; 377 u_int8_t nd_opt_dnssl_len; 378 u_int16_t nd_opt_dnssl_reserved; 379 u_int32_t nd_opt_dnssl_lifetime; 380 /* followed by list of DNS search domains */ 381 } __packed; 382 383 /* 384 * icmp6 namelookup 385 */ 386 387 struct icmp6_namelookup { 388 struct icmp6_hdr icmp6_nl_hdr; 389 u_int8_t icmp6_nl_nonce[8]; 390 int32_t icmp6_nl_ttl; 391 #if 0 392 u_int8_t icmp6_nl_len; 393 u_int8_t icmp6_nl_name[3]; 394 #endif 395 /* could be followed by options */ 396 } __packed; 397 398 /* 399 * icmp6 node information 400 */ 401 struct icmp6_nodeinfo { 402 struct icmp6_hdr icmp6_ni_hdr; 403 u_int8_t icmp6_ni_nonce[8]; 404 /* could be followed by reply data */ 405 } __packed; 406 407 #define ni_type icmp6_ni_hdr.icmp6_type 408 #define ni_code icmp6_ni_hdr.icmp6_code 409 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 410 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 411 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 412 413 #define NI_QTYPE_NOOP 0 /* NOOP */ 414 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 415 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 416 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 417 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 418 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 419 420 #if BYTE_ORDER == BIG_ENDIAN 421 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 422 #define NI_FQDN_FLAG_VALIDTTL 0x1 423 #elif BYTE_ORDER == LITTLE_ENDIAN 424 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 425 #define NI_FQDN_FLAG_VALIDTTL 0x0100 426 #endif 427 428 #ifdef NAME_LOOKUPS_04 429 #if BYTE_ORDER == BIG_ENDIAN 430 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 431 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 432 #define NI_NODEADDR_FLAG_GLOBAL 0x4 433 #define NI_NODEADDR_FLAG_ALL 0x8 434 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 435 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 436 #elif BYTE_ORDER == LITTLE_ENDIAN 437 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 438 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 439 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 440 #define NI_NODEADDR_FLAG_ALL 0x0800 441 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 442 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 443 #endif 444 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 445 #if BYTE_ORDER == BIG_ENDIAN 446 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 447 #define NI_NODEADDR_FLAG_ALL 0x2 448 #define NI_NODEADDR_FLAG_COMPAT 0x4 449 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 450 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 451 #define NI_NODEADDR_FLAG_GLOBAL 0x20 452 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 453 #elif BYTE_ORDER == LITTLE_ENDIAN 454 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 455 #define NI_NODEADDR_FLAG_ALL 0x0200 456 #define NI_NODEADDR_FLAG_COMPAT 0x0400 457 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 458 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 459 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 460 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 461 #endif 462 #endif 463 464 struct ni_reply_fqdn { 465 u_int32_t ni_fqdn_ttl; /* TTL */ 466 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 467 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 468 } __packed; 469 470 /* 471 * Router Renumbering. as router-renum-08.txt 472 */ 473 struct icmp6_router_renum { /* router renumbering header */ 474 struct icmp6_hdr rr_hdr; 475 u_int8_t rr_segnum; 476 u_int8_t rr_flags; 477 u_int16_t rr_maxdelay; 478 u_int32_t rr_reserved; 479 } __packed; 480 481 #define ICMP6_RR_FLAGS_TEST 0x80 482 #define ICMP6_RR_FLAGS_REQRESULT 0x40 483 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 484 #define ICMP6_RR_FLAGS_SPECSITE 0x10 485 #define ICMP6_RR_FLAGS_PREVDONE 0x08 486 487 #define rr_type rr_hdr.icmp6_type 488 #define rr_code rr_hdr.icmp6_code 489 #define rr_cksum rr_hdr.icmp6_cksum 490 #define rr_seqnum rr_hdr.icmp6_data32[0] 491 492 struct rr_pco_match { /* match prefix part */ 493 u_int8_t rpm_code; 494 u_int8_t rpm_len; 495 u_int8_t rpm_ordinal; 496 u_int8_t rpm_matchlen; 497 u_int8_t rpm_minlen; 498 u_int8_t rpm_maxlen; 499 u_int16_t rpm_reserved; 500 struct in6_addr rpm_prefix; 501 } __packed; 502 503 #define RPM_PCO_ADD 1 504 #define RPM_PCO_CHANGE 2 505 #define RPM_PCO_SETGLOBAL 3 506 #define RPM_PCO_MAX 4 507 508 struct rr_pco_use { /* use prefix part */ 509 u_int8_t rpu_uselen; 510 u_int8_t rpu_keeplen; 511 u_int8_t rpu_ramask; 512 u_int8_t rpu_raflags; 513 u_int32_t rpu_vltime; 514 u_int32_t rpu_pltime; 515 u_int32_t rpu_flags; 516 struct in6_addr rpu_prefix; 517 } __packed; 518 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 519 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 520 521 #if BYTE_ORDER == BIG_ENDIAN 522 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 523 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 524 #elif BYTE_ORDER == LITTLE_ENDIAN 525 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 526 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 527 #endif 528 529 struct rr_result { /* router renumbering result message */ 530 u_int16_t rrr_flags; 531 u_int8_t rrr_ordinal; 532 u_int8_t rrr_matchedlen; 533 u_int32_t rrr_ifid; 534 struct in6_addr rrr_prefix; 535 } __packed; 536 #if BYTE_ORDER == BIG_ENDIAN 537 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 538 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 539 #elif BYTE_ORDER == LITTLE_ENDIAN 540 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 541 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 542 #endif 543 544 /* 545 * icmp6 filter structures. 546 */ 547 548 struct icmp6_filter { 549 u_int32_t icmp6_filt[8]; 550 }; 551 552 #ifdef _KERNEL 553 #define ICMP6_FILTER_SETPASSALL(filterp) \ 554 do { \ 555 int i; u_char *p; \ 556 p = (u_char *)filterp; \ 557 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 558 p[i] = 0xff; \ 559 } while (/*CONSTCOND*/ 0) 560 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 561 bzero(filterp, sizeof(struct icmp6_filter)) 562 #else /* _KERNEL */ 563 #define ICMP6_FILTER_SETPASSALL(filterp) \ 564 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 565 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 566 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 567 #endif /* _KERNEL */ 568 569 #define ICMP6_FILTER_SETPASS(type, filterp) \ 570 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 571 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 572 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 573 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 574 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 575 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 576 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 577 578 /* 579 * Variables related to this implementation 580 * of the internet control message protocol version 6. 581 */ 582 struct icmp6errstat { 583 uint64_t icp6errs_dst_unreach_noroute; 584 uint64_t icp6errs_dst_unreach_admin; 585 uint64_t icp6errs_dst_unreach_beyondscope; 586 uint64_t icp6errs_dst_unreach_addr; 587 uint64_t icp6errs_dst_unreach_noport; 588 uint64_t icp6errs_packet_too_big; 589 uint64_t icp6errs_time_exceed_transit; 590 uint64_t icp6errs_time_exceed_reassembly; 591 uint64_t icp6errs_paramprob_header; 592 uint64_t icp6errs_paramprob_nextheader; 593 uint64_t icp6errs_paramprob_option; 594 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 595 uint64_t icp6errs_unknown; 596 }; 597 598 struct icmp6stat { 599 /* statistics related to icmp6 packets generated */ 600 uint64_t icp6s_error; /* # of calls to icmp6_error */ 601 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 602 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 603 uint64_t icp6s_outhist[256]; 604 /* statistics related to input message processed */ 605 uint64_t icp6s_badcode; /* icmp6_code out of range */ 606 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 607 uint64_t icp6s_checksum; /* bad checksum */ 608 uint64_t icp6s_badlen; /* calculated bound mismatch */ 609 /* 610 * number of responses: this member is inherited from netinet code, but 611 * for netinet6 code, it is already available in icp6s_outhist[]. 612 */ 613 uint64_t icp6s_reflect; 614 uint64_t icp6s_inhist[256]; 615 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 616 struct icmp6errstat icp6s_outerrhist; 617 #define icp6s_odst_unreach_noroute \ 618 icp6s_outerrhist.icp6errs_dst_unreach_noroute 619 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 620 #define icp6s_odst_unreach_beyondscope \ 621 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 622 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 623 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 624 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 625 #define icp6s_otime_exceed_transit \ 626 icp6s_outerrhist.icp6errs_time_exceed_transit 627 #define icp6s_otime_exceed_reassembly \ 628 icp6s_outerrhist.icp6errs_time_exceed_reassembly 629 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 630 #define icp6s_oparamprob_nextheader \ 631 icp6s_outerrhist.icp6errs_paramprob_nextheader 632 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 633 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 634 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 635 uint64_t icp6s_pmtuchg; /* path MTU changes */ 636 uint64_t icp6s_nd_badopt; /* bad ND options */ 637 uint64_t icp6s_badns; /* bad neighbor solicitation */ 638 uint64_t icp6s_badna; /* bad neighbor advertisement */ 639 uint64_t icp6s_badrs; /* bad router solicitation */ 640 uint64_t icp6s_badra; /* bad router advertisement */ 641 uint64_t icp6s_badredirect; /* bad redirect message */ 642 uint64_t icp6s_overflowdefrtr; /* Too many default routers. */ 643 uint64_t icp6s_overflowprfx; /* Too many prefixes. */ 644 uint64_t icp6s_overflownndp; /* Too many neighbour entries. */ 645 uint64_t icp6s_overflowredirect;/* Too many redirects. */ 646 uint64_t icp6s_invlhlim; /* Invalid hop limit. */ 647 uint64_t icp6s_spare[32]; 648 }; 649 650 #ifdef _KERNEL 651 #include <sys/counter.h> 652 653 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 654 /* 655 * In-kernel consumers can use these accessor macros directly to update 656 * stats. 657 */ 658 #define ICMP6STAT_ADD(name, val) \ 659 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 660 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 661 662 /* 663 * Kernel module consumers must use this accessor macro. 664 */ 665 void kmod_icmp6stat_inc(int statnum); 666 #define KMOD_ICMP6STAT_INC(name) \ 667 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 668 #endif 669 670 /* 671 * Names for ICMP sysctl objects 672 */ 673 #define ICMPV6CTL_STATS 1 674 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 675 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 676 #if 0 /*obsoleted*/ 677 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 678 #endif 679 #define ICMPV6CTL_ND6_PRUNE 6 680 #define ICMPV6CTL_ND6_DELAY 8 681 #define ICMPV6CTL_ND6_UMAXTRIES 9 682 #define ICMPV6CTL_ND6_MMAXTRIES 10 683 #define ICMPV6CTL_ND6_USELOOPBACK 11 684 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 685 #define ICMPV6CTL_NODEINFO 13 686 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 687 #define ICMPV6CTL_ND6_MAXNUDHINT 15 688 #define ICMPV6CTL_MTUDISC_HIWAT 16 689 #define ICMPV6CTL_MTUDISC_LOWAT 17 690 #define ICMPV6CTL_ND6_DEBUG 18 691 #define ICMPV6CTL_ND6_DRLIST 19 692 #define ICMPV6CTL_ND6_PRLIST 20 693 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 694 #define ICMPV6CTL_MLD_SOMAXSRC 22 695 #define ICMPV6CTL_MLD_VERSION 23 696 #define ICMPV6CTL_ND6_MAXQLEN 24 697 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 698 #define ICMPV6CTL_MAXID 26 699 700 #ifdef _KERNEL 701 # ifdef __STDC__ 702 struct nhop_object; 703 struct rttimer; 704 struct in6_multi; 705 # endif 706 void icmp6_paramerror(struct mbuf *, int); 707 void icmp6_error(struct mbuf *, int, int, int); 708 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 709 int icmp6_input(struct mbuf **, int *, int); 710 void icmp6_fasttimo(void); 711 void icmp6_slowtimo(void); 712 void icmp6_prepare(struct mbuf *); 713 void icmp6_redirect_input(struct mbuf *, int); 714 void icmp6_redirect_output(struct mbuf *, struct nhop_object *); 715 716 struct ip6ctlparam; 717 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 718 719 /* XXX: is this the right place for these macros? */ 720 #define icmp6_ifstat_inc(ifp, tag) \ 721 do { \ 722 if (ifp) \ 723 counter_u64_add(((struct in6_ifextra *) \ 724 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 725 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 726 } while (/*CONSTCOND*/ 0) 727 728 #define icmp6_ifoutstat_inc(ifp, type, code) \ 729 do { \ 730 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 731 if (type < ICMP6_INFOMSG_MASK) \ 732 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 733 switch (type) { \ 734 case ICMP6_DST_UNREACH: \ 735 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 736 if (code == ICMP6_DST_UNREACH_ADMIN) \ 737 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 738 break; \ 739 case ICMP6_PACKET_TOO_BIG: \ 740 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 741 break; \ 742 case ICMP6_TIME_EXCEEDED: \ 743 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 744 break; \ 745 case ICMP6_PARAM_PROB: \ 746 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 747 break; \ 748 case ICMP6_ECHO_REQUEST: \ 749 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 750 break; \ 751 case ICMP6_ECHO_REPLY: \ 752 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 753 break; \ 754 case MLD_LISTENER_QUERY: \ 755 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 756 break; \ 757 case MLD_LISTENER_REPORT: \ 758 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 759 break; \ 760 case MLD_LISTENER_DONE: \ 761 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 762 break; \ 763 case ND_ROUTER_SOLICIT: \ 764 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 765 break; \ 766 case ND_ROUTER_ADVERT: \ 767 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 768 break; \ 769 case ND_NEIGHBOR_SOLICIT: \ 770 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 771 break; \ 772 case ND_NEIGHBOR_ADVERT: \ 773 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 774 break; \ 775 case ND_REDIRECT: \ 776 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 777 break; \ 778 } \ 779 } while (/*CONSTCOND*/ 0) 780 781 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 782 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 783 784 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 785 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 786 787 #define ICMP6_NODEINFO_FQDNOK 0x1 788 #define ICMP6_NODEINFO_NODEADDROK 0x2 789 #define ICMP6_NODEINFO_TMPADDROK 0x4 790 #define ICMP6_NODEINFO_GLOBALOK 0x8 791 #endif /* _KERNEL */ 792 793 #endif /* not _NETINET_ICMP6_H_ */ 794