1 /* $OpenBSD: icmp6.h,v 1.53 2024/05/13 01:15:53 jsg Exp $ */ 2 /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 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. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 62 */ 63 64 #ifndef _NETINET_ICMP6_H_ 65 #define _NETINET_ICMP6_H_ 66 67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 68 - sizeof(struct icmp6_hdr) */ 69 70 struct icmp6_hdr { 71 u_int8_t icmp6_type; /* type field */ 72 u_int8_t icmp6_code; /* code field */ 73 u_int16_t icmp6_cksum; /* checksum field */ 74 union { 75 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 76 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 77 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 78 } icmp6_dataun; 79 } __packed; 80 81 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 82 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 83 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 84 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 85 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 86 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 87 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 88 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 89 90 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 91 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 92 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 93 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 94 95 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 96 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 97 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 98 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 99 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 100 101 /* RFC2292 decls */ 102 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 104 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 105 106 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 107 #define ND_ROUTER_ADVERT 134 /* router advertisement */ 108 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 109 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ 110 #define ND_REDIRECT 137 /* redirect */ 111 112 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 113 114 #define ICMP6_WRUREQUEST 139 /* who are you request */ 115 #define ICMP6_WRUREPLY 140 /* who are you reply */ 116 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 117 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 118 #define ICMP6_NI_QUERY 139 /* node information request */ 119 #define ICMP6_NI_REPLY 140 /* node information reply */ 120 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ 121 122 /* The definitions below are experimental. TBA */ 123 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ 124 #define MLD_MTRACE 201 /* mtrace messages */ 125 126 #define ICMP6_MAXTYPE 201 127 128 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 129 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 130 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 131 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 132 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 133 134 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 135 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 136 137 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 138 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 139 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 140 141 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 142 143 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 144 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 145 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 146 147 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 148 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 149 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 150 151 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 152 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 153 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 154 155 /* Used in kernel only */ 156 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 157 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 158 159 /* 160 * Multicast Listener Discovery 161 */ 162 struct mld_hdr { 163 struct icmp6_hdr mld_icmp6_hdr; 164 struct in6_addr mld_addr; /* multicast address */ 165 } __packed; 166 167 /* shortcut macro definitions */ 168 #define mld_type mld_icmp6_hdr.icmp6_type 169 #define mld_code mld_icmp6_hdr.icmp6_code 170 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 171 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 172 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 173 174 /* 175 * Neighbor Discovery 176 */ 177 178 struct nd_router_solicit { /* router solicitation */ 179 struct icmp6_hdr nd_rs_hdr; 180 /* could be followed by options */ 181 } __packed; 182 183 #define nd_rs_type nd_rs_hdr.icmp6_type 184 #define nd_rs_code nd_rs_hdr.icmp6_code 185 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 186 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 187 188 struct nd_router_advert { /* router advertisement */ 189 struct icmp6_hdr nd_ra_hdr; 190 u_int32_t nd_ra_reachable; /* reachable time */ 191 u_int32_t nd_ra_retransmit; /* retransmit timer */ 192 /* could be followed by options */ 193 } __packed; 194 195 #define nd_ra_type nd_ra_hdr.icmp6_type 196 #define nd_ra_code nd_ra_hdr.icmp6_code 197 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 198 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 199 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 200 #define ND_RA_FLAG_MANAGED 0x80 201 #define ND_RA_FLAG_OTHER 0x40 202 203 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 204 205 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 206 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 207 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 208 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 209 210 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 211 212 struct nd_neighbor_solicit { /* neighbor solicitation */ 213 struct icmp6_hdr nd_ns_hdr; 214 struct in6_addr nd_ns_target; /*target address */ 215 /* could be followed by options */ 216 } __packed; 217 218 #define nd_ns_type nd_ns_hdr.icmp6_type 219 #define nd_ns_code nd_ns_hdr.icmp6_code 220 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 221 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 222 223 struct nd_neighbor_advert { /* neighbor advertisement */ 224 struct icmp6_hdr nd_na_hdr; 225 struct in6_addr nd_na_target; /* target address */ 226 /* could be followed by options */ 227 } __packed; 228 229 #define nd_na_type nd_na_hdr.icmp6_type 230 #define nd_na_code nd_na_hdr.icmp6_code 231 #define nd_na_cksum nd_na_hdr.icmp6_cksum 232 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 233 #define ND_NA_FLAG_ROUTER htonl(0x80000000) 234 #define ND_NA_FLAG_SOLICITED htonl(0x40000000) 235 #define ND_NA_FLAG_OVERRIDE htonl(0x20000000) 236 237 struct nd_redirect { /* redirect */ 238 struct icmp6_hdr nd_rd_hdr; 239 struct in6_addr nd_rd_target; /* target address */ 240 struct in6_addr nd_rd_dst; /* destination address */ 241 /* could be followed by options */ 242 } __packed; 243 244 #define nd_rd_type nd_rd_hdr.icmp6_type 245 #define nd_rd_code nd_rd_hdr.icmp6_code 246 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 247 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 248 249 struct nd_opt_hdr { /* Neighbor discovery option header */ 250 u_int8_t nd_opt_type; 251 u_int8_t nd_opt_len; 252 /* followed by option specific data*/ 253 } __packed; 254 255 #define ND_OPT_SOURCE_LINKADDR 1 256 #define ND_OPT_TARGET_LINKADDR 2 257 #define ND_OPT_PREFIX_INFORMATION 3 258 #define ND_OPT_REDIRECTED_HEADER 4 259 #define ND_OPT_MTU 5 260 #define ND_OPT_ROUTE_INFO 24 261 #define ND_OPT_RDNSS 25 262 #define ND_OPT_DNSSL 31 263 264 struct nd_opt_prefix_info { /* prefix information */ 265 u_int8_t nd_opt_pi_type; 266 u_int8_t nd_opt_pi_len; 267 u_int8_t nd_opt_pi_prefix_len; 268 u_int8_t nd_opt_pi_flags_reserved; 269 u_int32_t nd_opt_pi_valid_time; 270 u_int32_t nd_opt_pi_preferred_time; 271 u_int32_t nd_opt_pi_reserved2; 272 struct in6_addr nd_opt_pi_prefix; 273 } __packed; 274 275 #define ND_OPT_PI_FLAG_ONLINK 0x80 276 #define ND_OPT_PI_FLAG_AUTO 0x40 277 278 struct nd_opt_rd_hdr { /* redirected header */ 279 u_int8_t nd_opt_rh_type; 280 u_int8_t nd_opt_rh_len; 281 u_int16_t nd_opt_rh_reserved1; 282 u_int32_t nd_opt_rh_reserved2; 283 /* followed by IP header and data */ 284 } __packed; 285 286 struct nd_opt_mtu { /* MTU option */ 287 u_int8_t nd_opt_mtu_type; 288 u_int8_t nd_opt_mtu_len; 289 u_int16_t nd_opt_mtu_reserved; 290 u_int32_t nd_opt_mtu_mtu; 291 } __packed; 292 293 struct nd_opt_route_info { /* route info */ 294 u_int8_t nd_opt_rti_type; 295 u_int8_t nd_opt_rti_len; 296 u_int8_t nd_opt_rti_prefixlen; 297 u_int8_t nd_opt_rti_flags; 298 u_int32_t nd_opt_rti_lifetime; 299 } __packed; 300 301 struct nd_opt_rdnss { /* RDNSS option */ 302 u_int8_t nd_opt_rdnss_type; 303 u_int8_t nd_opt_rdnss_len; 304 u_int16_t nd_opt_rdnss_reserved; 305 u_int32_t nd_opt_rdnss_lifetime; 306 /* followed by list of recursive DNS servers */ 307 } __packed; 308 309 struct nd_opt_dnssl { /* DNSSL option */ 310 u_int8_t nd_opt_dnssl_type; 311 u_int8_t nd_opt_dnssl_len; 312 u_int16_t nd_opt_dnssl_reserved; 313 u_int32_t nd_opt_dnssl_lifetime; 314 /* followed by list of DNS search domains */ 315 } __packed; 316 317 /* 318 * icmp6 namelookup 319 */ 320 struct icmp6_namelookup { 321 struct icmp6_hdr icmp6_nl_hdr; 322 u_int8_t icmp6_nl_nonce[8]; 323 int32_t icmp6_nl_ttl; 324 #if 0 325 u_int8_t icmp6_nl_len; 326 u_int8_t icmp6_nl_name[3]; 327 #endif 328 /* could be followed by options */ 329 } __packed; 330 331 /* 332 * icmp6 node information 333 */ 334 struct icmp6_nodeinfo { 335 struct icmp6_hdr icmp6_ni_hdr; 336 u_int8_t icmp6_ni_nonce[8]; 337 /* could be followed by reply data */ 338 } __packed; 339 340 #define ni_type icmp6_ni_hdr.icmp6_type 341 #define ni_code icmp6_ni_hdr.icmp6_code 342 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 343 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 344 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 345 346 #define NI_QTYPE_NOOP 0 /* NOOP */ 347 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 348 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 349 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 350 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 351 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 352 353 #define NI_SUPTYPE_FLAG_COMPRESS htons(0x0001) 354 #define NI_FQDN_FLAG_VALIDTTL htons(0x0001) 355 356 #define NI_NODEADDR_FLAG_TRUNCATE htons(0x0001) 357 #define NI_NODEADDR_FLAG_ALL htons(0x0002) 358 #define NI_NODEADDR_FLAG_COMPAT htons(0x0004) 359 #define NI_NODEADDR_FLAG_LINKLOCAL htons(0x0008) 360 #define NI_NODEADDR_FLAG_SITELOCAL htons(0x0010) 361 #define NI_NODEADDR_FLAG_GLOBAL htons(0x0020) 362 #define NI_NODEADDR_FLAG_ANYCAST htons(0x0040) /* not in spec */ 363 364 struct ni_reply_fqdn { 365 u_int32_t ni_fqdn_ttl; /* TTL */ 366 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 367 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 368 } __packed; 369 370 /* 371 * Router Renumbering. as router-renum-08.txt 372 */ 373 struct icmp6_router_renum { /* router renumbering header */ 374 struct icmp6_hdr rr_hdr; 375 u_int8_t rr_segnum; 376 u_int8_t rr_flags; 377 u_int16_t rr_maxdelay; 378 u_int32_t rr_reserved; 379 } __packed; 380 381 #define ICMP6_RR_FLAGS_TEST 0x80 382 #define ICMP6_RR_FLAGS_REQRESULT 0x40 383 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 384 #define ICMP6_RR_FLAGS_SPECSITE 0x10 385 #define ICMP6_RR_FLAGS_PREVDONE 0x08 386 387 #define rr_type rr_hdr.icmp6_type 388 #define rr_code rr_hdr.icmp6_code 389 #define rr_cksum rr_hdr.icmp6_cksum 390 #define rr_seqnum rr_hdr.icmp6_data32[0] 391 392 struct rr_pco_match { /* match prefix part */ 393 u_int8_t rpm_code; 394 u_int8_t rpm_len; 395 u_int8_t rpm_ordinal; 396 u_int8_t rpm_matchlen; 397 u_int8_t rpm_minlen; 398 u_int8_t rpm_maxlen; 399 u_int16_t rpm_reserved; 400 struct in6_addr rpm_prefix; 401 } __packed; 402 403 #define RPM_PCO_ADD 1 404 #define RPM_PCO_CHANGE 2 405 #define RPM_PCO_SETGLOBAL 3 406 #define RPM_PCO_MAX 4 407 408 struct rr_pco_use { /* use prefix part */ 409 u_int8_t rpu_uselen; 410 u_int8_t rpu_keeplen; 411 u_int8_t rpu_ramask; 412 u_int8_t rpu_raflags; 413 u_int32_t rpu_vltime; 414 u_int32_t rpu_pltime; 415 u_int32_t rpu_flags; 416 struct in6_addr rpu_prefix; 417 } __packed; 418 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 419 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 420 421 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME htonl(0x80000000) 422 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME htonl(0x40000000) 423 424 struct rr_result { /* router renumbering result message */ 425 u_int16_t rrr_flags; 426 u_int8_t rrr_ordinal; 427 u_int8_t rrr_matchedlen; 428 u_int32_t rrr_ifid; 429 struct in6_addr rrr_prefix; 430 } __packed; 431 #define ICMP6_RR_RESULT_FLAGS_OOB htons(0x0002) 432 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN htons(0x0001) 433 434 /* 435 * icmp6 filter structures. 436 */ 437 438 struct icmp6_filter { 439 u_int32_t icmp6_filt[8]; 440 }; 441 442 #define ICMP6_FILTER_SETPASSALL(filterp) \ 443 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 444 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 445 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 446 #define ICMP6_FILTER_SETPASS(type, filterp) \ 447 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 448 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 449 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 450 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 451 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 452 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 453 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 454 455 /* 456 * Variables related to this implementation 457 * of the internet control message protocol version 6. 458 */ 459 struct icmp6stat { 460 /* statistics related to icmp6 packets generated */ 461 u_int64_t icp6s_error; /* # of calls to icmp6_error */ 462 u_int64_t icp6s_canterror; /* no error because old was icmp */ 463 u_int64_t icp6s_toofreq; /* no error because rate limitation */ 464 u_int64_t icp6s_outhist[256]; 465 /* statistics related to input message processed */ 466 u_int64_t icp6s_badcode; /* icmp6_code out of range */ 467 u_int64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 468 u_int64_t icp6s_checksum; /* bad checksum */ 469 u_int64_t icp6s_badlen; /* calculated bound mismatch */ 470 /* 471 * number of responses: this member is inherited from netinet code, but 472 * for netinet6 code, it is already available in icp6s_outhist[]. 473 */ 474 u_int64_t icp6s_reflect; 475 u_int64_t icp6s_inhist[256]; 476 u_int64_t icp6s_nd_toomanyopt; /* too many ND options */ 477 u_int64_t icp6s_odst_unreach_noroute; 478 u_int64_t icp6s_odst_unreach_admin; 479 u_int64_t icp6s_odst_unreach_beyondscope; 480 u_int64_t icp6s_odst_unreach_addr; 481 u_int64_t icp6s_odst_unreach_noport; 482 u_int64_t icp6s_opacket_too_big; 483 u_int64_t icp6s_otime_exceed_transit; 484 u_int64_t icp6s_otime_exceed_reassembly; 485 u_int64_t icp6s_oparamprob_header; 486 u_int64_t icp6s_oparamprob_nextheader; 487 u_int64_t icp6s_oparamprob_option; 488 u_int64_t icp6s_oredirect; /* we regard redirect as an error here */ 489 u_int64_t icp6s_ounknown; 490 u_int64_t icp6s_pmtuchg; /* path MTU changes */ 491 u_int64_t icp6s_nd_badopt; /* bad ND options */ 492 u_int64_t icp6s_badns; /* bad neighbor solicitation */ 493 u_int64_t icp6s_badna; /* bad neighbor advertisement */ 494 u_int64_t icp6s_badrs; /* bad router advertisement */ 495 u_int64_t icp6s_badra; /* bad router advertisement */ 496 u_int64_t icp6s_badredirect; /* bad redirect message */ 497 }; 498 499 /* 500 * Names for ICMP sysctl objects 501 */ 502 #define ICMPV6CTL_STATS 1 503 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 504 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 505 #define ICMPV6CTL_ND6_DELAY 8 506 #define ICMPV6CTL_ND6_UMAXTRIES 9 507 #define ICMPV6CTL_ND6_MMAXTRIES 10 508 #define ICMPV6CTL_ND6_QUEUED 11 509 #define ICMPV6CTL_NODEINFO 13 510 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 511 #define ICMPV6CTL_ND6_MAXNUDHINT 15 512 #define ICMPV6CTL_MTUDISC_HIWAT 16 513 #define ICMPV6CTL_MTUDISC_LOWAT 17 514 #define ICMPV6CTL_ND6_DEBUG 18 515 #define ICMPV6CTL_MAXID 19 516 517 #define ICMPV6CTL_NAMES { \ 518 { 0, 0 }, \ 519 { 0, 0 }, \ 520 { 0, 0 }, \ 521 { "redirtimeout", CTLTYPE_INT }, \ 522 { 0, 0 }, \ 523 { 0, 0 }, \ 524 { 0, 0 }, \ 525 { 0, 0 }, \ 526 { "nd6_delay", CTLTYPE_INT }, \ 527 { "nd6_umaxtries", CTLTYPE_INT }, \ 528 { "nd6_mmaxtries", CTLTYPE_INT }, \ 529 { "nd6_queued", CTLTYPE_INT }, \ 530 { 0, 0 }, \ 531 { 0, 0 }, \ 532 { "errppslimit", CTLTYPE_INT }, \ 533 { "nd6_maxnudhint", CTLTYPE_INT }, \ 534 { "mtudisc_hiwat", CTLTYPE_INT }, \ 535 { "mtudisc_lowat", CTLTYPE_INT }, \ 536 { "nd6_debug", CTLTYPE_INT }, \ 537 } 538 539 #define RTF_PROBEMTU RTF_PROTO1 540 541 #ifdef _KERNEL 542 543 #include <sys/percpu.h> 544 545 enum icmp6stat_counters { 546 icp6s_error, 547 icp6s_canterror, 548 icp6s_toofreq, 549 icp6s_outhist, 550 icp6s_badcode = icp6s_outhist + 256, 551 icp6s_tooshort, 552 icp6s_checksum, 553 icp6s_badlen, 554 icp6s_reflect, 555 icp6s_inhist, 556 icp6s_nd_toomanyopt = icp6s_inhist + 256, 557 icp6s_odst_unreach_noroute, 558 icp6s_odst_unreach_admin, 559 icp6s_odst_unreach_beyondscope, 560 icp6s_odst_unreach_addr, 561 icp6s_odst_unreach_noport, 562 icp6s_opacket_too_big, 563 icp6s_otime_exceed_transit, 564 icp6s_otime_exceed_reassembly, 565 icp6s_oparamprob_header, 566 icp6s_oparamprob_nextheader, 567 icp6s_oparamprob_option, 568 icp6s_oredirect, 569 icp6s_ounknown, 570 icp6s_pmtuchg, 571 icp6s_nd_badopt, 572 icp6s_badns, 573 icp6s_badna, 574 icp6s_badrs, 575 icp6s_badra, 576 icp6s_badredirect, 577 icp6s_ncounters, 578 }; 579 580 extern struct cpumem *icmp6counters; 581 582 static inline void 583 icmp6stat_inc(enum icmp6stat_counters c) 584 { 585 counters_inc(icmp6counters, c); 586 } 587 588 struct rtentry; 589 struct rttimer; 590 struct in6_multi; 591 592 void icmp6_init(void); 593 struct mbuf *icmp6_do_error(struct mbuf *, int, int, int); 594 void icmp6_error(struct mbuf *, int, int, int); 595 int icmp6_input(struct mbuf **, int *, int, int); 596 void icmp6_fasttimo(void); 597 int icmp6_reflect(struct mbuf **, size_t, struct sockaddr *); 598 void icmp6_redirect_input(struct mbuf *, int); 599 void icmp6_redirect_output(struct mbuf *, struct rtentry *); 600 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); 601 struct rtentry *icmp6_mtudisc_clone(struct sockaddr_in6 *, u_int, int); 602 603 struct ip6ctlparam; 604 void icmp6_mtudisc_update(struct ip6ctlparam *, int); 605 void icmp6_mtudisc_callback_register(void (*)(struct sockaddr_in6 *, u_int)); 606 607 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 608 609 #endif /* _KERNEL */ 610 #endif /* _NETINET_ICMP6_H_ */ 611