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FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp6.h
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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 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 248 249 struct nd_neighbor_solicit { /* neighbor solicitation */ 250 struct icmp6_hdr nd_ns_hdr; 251 struct in6_addr nd_ns_target; /*target address */ 252 /* could be followed by options */ 253 } __packed; 254 255 #define nd_ns_type nd_ns_hdr.icmp6_type 256 #define nd_ns_code nd_ns_hdr.icmp6_code 257 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 258 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 259 260 struct nd_neighbor_advert { /* neighbor advertisement */ 261 struct icmp6_hdr nd_na_hdr; 262 struct in6_addr nd_na_target; /* target address */ 263 /* could be followed by options */ 264 } __packed; 265 266 #define nd_na_type nd_na_hdr.icmp6_type 267 #define nd_na_code nd_na_hdr.icmp6_code 268 #define nd_na_cksum nd_na_hdr.icmp6_cksum 269 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 270 #if BYTE_ORDER == BIG_ENDIAN 271 #define ND_NA_FLAG_ROUTER 0x80000000 272 #define ND_NA_FLAG_SOLICITED 0x40000000 273 #define ND_NA_FLAG_OVERRIDE 0x20000000 274 #else 275 #if BYTE_ORDER == LITTLE_ENDIAN 276 #define ND_NA_FLAG_ROUTER 0x80 277 #define ND_NA_FLAG_SOLICITED 0x40 278 #define ND_NA_FLAG_OVERRIDE 0x20 279 #endif 280 #endif 281 282 struct nd_redirect { /* redirect */ 283 struct icmp6_hdr nd_rd_hdr; 284 struct in6_addr nd_rd_target; /* target address */ 285 struct in6_addr nd_rd_dst; /* destination address */ 286 /* could be followed by options */ 287 } __packed; 288 289 #define nd_rd_type nd_rd_hdr.icmp6_type 290 #define nd_rd_code nd_rd_hdr.icmp6_code 291 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 292 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 293 294 struct nd_opt_hdr { /* Neighbor discovery option header */ 295 u_int8_t nd_opt_type; 296 u_int8_t nd_opt_len; 297 /* followed by option specific data*/ 298 } __packed; 299 300 #define ND_OPT_SOURCE_LINKADDR 1 301 #define ND_OPT_TARGET_LINKADDR 2 302 #define ND_OPT_PREFIX_INFORMATION 3 303 #define ND_OPT_REDIRECTED_HEADER 4 304 #define ND_OPT_MTU 5 305 #define ND_OPT_NONCE 14 /* RFC 3971 */ 306 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ 307 #define ND_OPT_RDNSS 25 /* RFC 6106 */ 308 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 309 #define ND_OPT_MAX 31 310 311 struct nd_opt_prefix_info { /* prefix information */ 312 u_int8_t nd_opt_pi_type; 313 u_int8_t nd_opt_pi_len; 314 u_int8_t nd_opt_pi_prefix_len; 315 u_int8_t nd_opt_pi_flags_reserved; 316 u_int32_t nd_opt_pi_valid_time; 317 u_int32_t nd_opt_pi_preferred_time; 318 u_int32_t nd_opt_pi_reserved2; 319 struct in6_addr nd_opt_pi_prefix; 320 } __packed; 321 322 #define ND_OPT_PI_FLAG_ONLINK 0x80 323 #define ND_OPT_PI_FLAG_AUTO 0x40 324 325 struct nd_opt_rd_hdr { /* redirected header */ 326 u_int8_t nd_opt_rh_type; 327 u_int8_t nd_opt_rh_len; 328 u_int16_t nd_opt_rh_reserved1; 329 u_int32_t nd_opt_rh_reserved2; 330 /* followed by IP header and data */ 331 } __packed; 332 333 struct nd_opt_mtu { /* MTU option */ 334 u_int8_t nd_opt_mtu_type; 335 u_int8_t nd_opt_mtu_len; 336 u_int16_t nd_opt_mtu_reserved; 337 u_int32_t nd_opt_mtu_mtu; 338 } __packed; 339 340 #define ND_OPT_NONCE_LEN ((1 * 8) - 2) 341 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 342 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." 343 #endif 344 struct nd_opt_nonce { /* nonce option */ 345 u_int8_t nd_opt_nonce_type; 346 u_int8_t nd_opt_nonce_len; 347 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; 348 } __packed; 349 350 struct nd_opt_route_info { /* route info */ 351 u_int8_t nd_opt_rti_type; 352 u_int8_t nd_opt_rti_len; 353 u_int8_t nd_opt_rti_prefixlen; 354 u_int8_t nd_opt_rti_flags; 355 u_int32_t nd_opt_rti_lifetime; 356 /* prefix follows */ 357 } __packed; 358 359 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */ 360 u_int8_t nd_opt_rdnss_type; 361 u_int8_t nd_opt_rdnss_len; 362 u_int16_t nd_opt_rdnss_reserved; 363 u_int32_t nd_opt_rdnss_lifetime; 364 /* followed by list of recursive DNS servers */ 365 } __packed; 366 367 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */ 368 u_int8_t nd_opt_dnssl_type; 369 u_int8_t nd_opt_dnssl_len; 370 u_int16_t nd_opt_dnssl_reserved; 371 u_int32_t nd_opt_dnssl_lifetime; 372 /* followed by list of DNS search domains */ 373 } __packed; 374 375 /* 376 * icmp6 namelookup 377 */ 378 379 struct icmp6_namelookup { 380 struct icmp6_hdr icmp6_nl_hdr; 381 u_int8_t icmp6_nl_nonce[8]; 382 int32_t icmp6_nl_ttl; 383 #if 0 384 u_int8_t icmp6_nl_len; 385 u_int8_t icmp6_nl_name[3]; 386 #endif 387 /* could be followed by options */ 388 } __packed; 389 390 /* 391 * icmp6 node information 392 */ 393 struct icmp6_nodeinfo { 394 struct icmp6_hdr icmp6_ni_hdr; 395 u_int8_t icmp6_ni_nonce[8]; 396 /* could be followed by reply data */ 397 } __packed; 398 399 #define ni_type icmp6_ni_hdr.icmp6_type 400 #define ni_code icmp6_ni_hdr.icmp6_code 401 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 402 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 403 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 404 405 #define NI_QTYPE_NOOP 0 /* NOOP */ 406 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 407 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 408 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 409 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 410 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 411 412 #if BYTE_ORDER == BIG_ENDIAN 413 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 414 #define NI_FQDN_FLAG_VALIDTTL 0x1 415 #elif BYTE_ORDER == LITTLE_ENDIAN 416 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 417 #define NI_FQDN_FLAG_VALIDTTL 0x0100 418 #endif 419 420 #ifdef NAME_LOOKUPS_04 421 #if BYTE_ORDER == BIG_ENDIAN 422 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 423 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 424 #define NI_NODEADDR_FLAG_GLOBAL 0x4 425 #define NI_NODEADDR_FLAG_ALL 0x8 426 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 427 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 428 #elif BYTE_ORDER == LITTLE_ENDIAN 429 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 430 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 431 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 432 #define NI_NODEADDR_FLAG_ALL 0x0800 433 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 434 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 435 #endif 436 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 437 #if BYTE_ORDER == BIG_ENDIAN 438 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 439 #define NI_NODEADDR_FLAG_ALL 0x2 440 #define NI_NODEADDR_FLAG_COMPAT 0x4 441 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 442 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 443 #define NI_NODEADDR_FLAG_GLOBAL 0x20 444 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 445 #elif BYTE_ORDER == LITTLE_ENDIAN 446 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 447 #define NI_NODEADDR_FLAG_ALL 0x0200 448 #define NI_NODEADDR_FLAG_COMPAT 0x0400 449 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 450 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 451 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 452 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 453 #endif 454 #endif 455 456 struct ni_reply_fqdn { 457 u_int32_t ni_fqdn_ttl; /* TTL */ 458 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 459 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 460 } __packed; 461 462 /* 463 * Router Renumbering. as router-renum-08.txt 464 */ 465 struct icmp6_router_renum { /* router renumbering header */ 466 struct icmp6_hdr rr_hdr; 467 u_int8_t rr_segnum; 468 u_int8_t rr_flags; 469 u_int16_t rr_maxdelay; 470 u_int32_t rr_reserved; 471 } __packed; 472 473 #define ICMP6_RR_FLAGS_TEST 0x80 474 #define ICMP6_RR_FLAGS_REQRESULT 0x40 475 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 476 #define ICMP6_RR_FLAGS_SPECSITE 0x10 477 #define ICMP6_RR_FLAGS_PREVDONE 0x08 478 479 #define rr_type rr_hdr.icmp6_type 480 #define rr_code rr_hdr.icmp6_code 481 #define rr_cksum rr_hdr.icmp6_cksum 482 #define rr_seqnum rr_hdr.icmp6_data32[0] 483 484 struct rr_pco_match { /* match prefix part */ 485 u_int8_t rpm_code; 486 u_int8_t rpm_len; 487 u_int8_t rpm_ordinal; 488 u_int8_t rpm_matchlen; 489 u_int8_t rpm_minlen; 490 u_int8_t rpm_maxlen; 491 u_int16_t rpm_reserved; 492 struct in6_addr rpm_prefix; 493 } __packed; 494 495 #define RPM_PCO_ADD 1 496 #define RPM_PCO_CHANGE 2 497 #define RPM_PCO_SETGLOBAL 3 498 #define RPM_PCO_MAX 4 499 500 struct rr_pco_use { /* use prefix part */ 501 u_int8_t rpu_uselen; 502 u_int8_t rpu_keeplen; 503 u_int8_t rpu_ramask; 504 u_int8_t rpu_raflags; 505 u_int32_t rpu_vltime; 506 u_int32_t rpu_pltime; 507 u_int32_t rpu_flags; 508 struct in6_addr rpu_prefix; 509 } __packed; 510 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 511 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 512 513 #if BYTE_ORDER == BIG_ENDIAN 514 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 515 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 516 #elif BYTE_ORDER == LITTLE_ENDIAN 517 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 518 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 519 #endif 520 521 struct rr_result { /* router renumbering result message */ 522 u_int16_t rrr_flags; 523 u_int8_t rrr_ordinal; 524 u_int8_t rrr_matchedlen; 525 u_int32_t rrr_ifid; 526 struct in6_addr rrr_prefix; 527 } __packed; 528 #if BYTE_ORDER == BIG_ENDIAN 529 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 530 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 531 #elif BYTE_ORDER == LITTLE_ENDIAN 532 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 533 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 534 #endif 535 536 /* 537 * icmp6 filter structures. 538 */ 539 540 struct icmp6_filter { 541 u_int32_t icmp6_filt[8]; 542 }; 543 544 #ifdef _KERNEL 545 #define ICMP6_FILTER_SETPASSALL(filterp) \ 546 do { \ 547 int i; u_char *p; \ 548 p = (u_char *)filterp; \ 549 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 550 p[i] = 0xff; \ 551 } while (/*CONSTCOND*/ 0) 552 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 553 bzero(filterp, sizeof(struct icmp6_filter)) 554 #else /* _KERNEL */ 555 #define ICMP6_FILTER_SETPASSALL(filterp) \ 556 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 557 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 558 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 559 #endif /* _KERNEL */ 560 561 #define ICMP6_FILTER_SETPASS(type, filterp) \ 562 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 563 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 564 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 565 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 566 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 567 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 568 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 569 570 /* 571 * Variables related to this implementation 572 * of the internet control message protocol version 6. 573 */ 574 struct icmp6errstat { 575 uint64_t icp6errs_dst_unreach_noroute; 576 uint64_t icp6errs_dst_unreach_admin; 577 uint64_t icp6errs_dst_unreach_beyondscope; 578 uint64_t icp6errs_dst_unreach_addr; 579 uint64_t icp6errs_dst_unreach_noport; 580 uint64_t icp6errs_packet_too_big; 581 uint64_t icp6errs_time_exceed_transit; 582 uint64_t icp6errs_time_exceed_reassembly; 583 uint64_t icp6errs_paramprob_header; 584 uint64_t icp6errs_paramprob_nextheader; 585 uint64_t icp6errs_paramprob_option; 586 uint64_t icp6errs_redirect; /* we regard redirect as an error here */ 587 uint64_t icp6errs_unknown; 588 }; 589 590 struct icmp6stat { 591 /* statistics related to icmp6 packets generated */ 592 uint64_t icp6s_error; /* # of calls to icmp6_error */ 593 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */ 594 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */ 595 uint64_t icp6s_outhist[256]; 596 /* statistics related to input message processed */ 597 uint64_t icp6s_badcode; /* icmp6_code out of range */ 598 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 599 uint64_t icp6s_checksum; /* bad checksum */ 600 uint64_t icp6s_badlen; /* calculated bound mismatch */ 601 /* 602 * number of responses: this member is inherited from netinet code, but 603 * for netinet6 code, it is already available in icp6s_outhist[]. 604 */ 605 uint64_t icp6s_reflect; 606 uint64_t icp6s_inhist[256]; 607 uint64_t icp6s_nd_toomanyopt; /* too many ND options */ 608 struct icmp6errstat icp6s_outerrhist; 609 #define icp6s_odst_unreach_noroute \ 610 icp6s_outerrhist.icp6errs_dst_unreach_noroute 611 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 612 #define icp6s_odst_unreach_beyondscope \ 613 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 614 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 615 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 616 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 617 #define icp6s_otime_exceed_transit \ 618 icp6s_outerrhist.icp6errs_time_exceed_transit 619 #define icp6s_otime_exceed_reassembly \ 620 icp6s_outerrhist.icp6errs_time_exceed_reassembly 621 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 622 #define icp6s_oparamprob_nextheader \ 623 icp6s_outerrhist.icp6errs_paramprob_nextheader 624 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 625 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 626 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 627 uint64_t icp6s_pmtuchg; /* path MTU changes */ 628 uint64_t icp6s_nd_badopt; /* bad ND options */ 629 uint64_t icp6s_badns; /* bad neighbor solicitation */ 630 uint64_t icp6s_badna; /* bad neighbor advertisement */ 631 uint64_t icp6s_badrs; /* bad router solicitation */ 632 uint64_t icp6s_badra; /* bad router advertisement */ 633 uint64_t icp6s_badredirect; /* bad redirect message */ 634 }; 635 636 #ifdef _KERNEL 637 #include <sys/counter.h> 638 639 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat); 640 /* 641 * In-kernel consumers can use these accessor macros directly to update 642 * stats. 643 */ 644 #define ICMP6STAT_ADD(name, val) \ 645 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val)) 646 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1) 647 648 /* 649 * Kernel module consumers must use this accessor macro. 650 */ 651 void kmod_icmp6stat_inc(int statnum); 652 #define KMOD_ICMP6STAT_INC(name) \ 653 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t)) 654 #endif 655 656 /* 657 * Names for ICMP sysctl objects 658 */ 659 #define ICMPV6CTL_STATS 1 660 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 661 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 662 #if 0 /*obsoleted*/ 663 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 664 #endif 665 #define ICMPV6CTL_ND6_PRUNE 6 666 #define ICMPV6CTL_ND6_DELAY 8 667 #define ICMPV6CTL_ND6_UMAXTRIES 9 668 #define ICMPV6CTL_ND6_MMAXTRIES 10 669 #define ICMPV6CTL_ND6_USELOOPBACK 11 670 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 671 #define ICMPV6CTL_NODEINFO 13 672 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 673 #define ICMPV6CTL_ND6_MAXNUDHINT 15 674 #define ICMPV6CTL_MTUDISC_HIWAT 16 675 #define ICMPV6CTL_MTUDISC_LOWAT 17 676 #define ICMPV6CTL_ND6_DEBUG 18 677 #define ICMPV6CTL_ND6_DRLIST 19 678 #define ICMPV6CTL_ND6_PRLIST 20 679 #define ICMPV6CTL_MLD_MAXSRCFILTER 21 680 #define ICMPV6CTL_MLD_SOMAXSRC 22 681 #define ICMPV6CTL_MLD_VERSION 23 682 #define ICMPV6CTL_ND6_MAXQLEN 24 683 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25 684 #define ICMPV6CTL_MAXID 26 685 686 #define RTF_PROBEMTU RTF_PROTO1 687 688 #ifdef _KERNEL 689 # ifdef __STDC__ 690 struct rtentry; 691 struct rttimer; 692 struct in6_multi; 693 # endif 694 void icmp6_paramerror(struct mbuf *, int); 695 void icmp6_error(struct mbuf *, int, int, int); 696 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); 697 int icmp6_input(struct mbuf **, int *, int); 698 void icmp6_fasttimo(void); 699 void icmp6_slowtimo(void); 700 void icmp6_reflect(struct mbuf *, size_t); 701 void icmp6_prepare(struct mbuf *); 702 void icmp6_redirect_input(struct mbuf *, int); 703 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 704 705 struct ip6ctlparam; 706 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 707 708 /* XXX: is this the right place for these macros? */ 709 #define icmp6_ifstat_inc(ifp, tag) \ 710 do { \ 711 if (ifp) \ 712 counter_u64_add(((struct in6_ifextra *) \ 713 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\ 714 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\ 715 } while (/*CONSTCOND*/ 0) 716 717 #define icmp6_ifoutstat_inc(ifp, type, code) \ 718 do { \ 719 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 720 if (type < ICMP6_INFOMSG_MASK) \ 721 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 722 switch (type) { \ 723 case ICMP6_DST_UNREACH: \ 724 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 725 if (code == ICMP6_DST_UNREACH_ADMIN) \ 726 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 727 break; \ 728 case ICMP6_PACKET_TOO_BIG: \ 729 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 730 break; \ 731 case ICMP6_TIME_EXCEEDED: \ 732 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 733 break; \ 734 case ICMP6_PARAM_PROB: \ 735 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 736 break; \ 737 case ICMP6_ECHO_REQUEST: \ 738 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 739 break; \ 740 case ICMP6_ECHO_REPLY: \ 741 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 742 break; \ 743 case MLD_LISTENER_QUERY: \ 744 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 745 break; \ 746 case MLD_LISTENER_REPORT: \ 747 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 748 break; \ 749 case MLD_LISTENER_DONE: \ 750 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 751 break; \ 752 case ND_ROUTER_SOLICIT: \ 753 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 754 break; \ 755 case ND_ROUTER_ADVERT: \ 756 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 757 break; \ 758 case ND_NEIGHBOR_SOLICIT: \ 759 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 760 break; \ 761 case ND_NEIGHBOR_ADVERT: \ 762 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 763 break; \ 764 case ND_REDIRECT: \ 765 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 766 break; \ 767 } \ 768 } while (/*CONSTCOND*/ 0) 769 770 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */ 771 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */ 772 773 #define V_icmp6_rediraccept VNET(icmp6_rediraccept) 774 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout) 775 776 #define ICMP6_NODEINFO_FQDNOK 0x1 777 #define ICMP6_NODEINFO_NODEADDROK 0x2 778 #define ICMP6_NODEINFO_TMPADDROK 0x4 779 #define ICMP6_NODEINFO_GLOBALOK 0x8 780 #endif /* _KERNEL */ 781 782 #endif /* not _NETINET_ICMP6_H_ */
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