1 /*- 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 itojun Exp $ 30 */ 31 32 /*- 33 * Copyright (c) 1985, 1986, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)in_var.h 8.1 (Berkeley) 6/10/93 61 * $FreeBSD$ 62 */ 63 64 #ifndef _NETINET6_IN6_VAR_H_ 65 #define _NETINET6_IN6_VAR_H_ 66 67 #include <sys/tree.h> 68 #include <sys/counter.h> 69 70 #ifdef _KERNEL 71 #include <sys/fnv_hash.h> 72 #include <sys/libkern.h> 73 #endif 74 75 /* 76 * Interface address, Internet version. One of these structures 77 * is allocated for each interface with an Internet address. 78 * The ifaddr structure contains the protocol-independent part 79 * of the structure and is assumed to be first. 80 */ 81 82 /* 83 * pltime/vltime are just for future reference (required to implements 2 84 * hour rule for hosts). they should never be modified by nd6_timeout or 85 * anywhere else. 86 * userland -> kernel: accept pltime/vltime 87 * kernel -> userland: throw up everything 88 * in kernel: modify preferred/expire only 89 */ 90 struct in6_addrlifetime { 91 time_t ia6t_expire; /* valid lifetime expiration time */ 92 time_t ia6t_preferred; /* preferred lifetime expiration time */ 93 u_int32_t ia6t_vltime; /* valid lifetime */ 94 u_int32_t ia6t_pltime; /* prefix lifetime */ 95 }; 96 97 struct nd_ifinfo; 98 struct scope6_id; 99 struct lltable; 100 struct mld_ifinfo; 101 102 struct in6_ifextra { 103 counter_u64_t *in6_ifstat; 104 counter_u64_t *icmp6_ifstat; 105 struct nd_ifinfo *nd_ifinfo; 106 struct scope6_id *scope6_id; 107 struct lltable *lltable; 108 struct mld_ifinfo *mld_ifinfo; 109 }; 110 111 #define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 112 113 #if defined(_KERNEL) || defined(_WANT_IFADDR) 114 struct in6_ifaddr { 115 struct ifaddr ia_ifa; /* protocol-independent info */ 116 #define ia_ifp ia_ifa.ifa_ifp 117 #define ia_flags ia_ifa.ifa_flags 118 struct sockaddr_in6 ia_addr; /* interface address */ 119 struct sockaddr_in6 ia_net; /* network number of interface */ 120 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 121 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 122 u_int32_t ia_plen; /* prefix length */ 123 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 124 int ia6_flags; 125 126 struct in6_addrlifetime ia6_lifetime; 127 time_t ia6_createtime; /* the creation time of this address, which is 128 * currently used for temporary addresses only. 129 */ 130 time_t ia6_updatetime; 131 132 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 133 struct nd_prefix *ia6_ndpr; 134 135 /* multicast addresses joined from the kernel */ 136 LIST_HEAD(, in6_multi_mship) ia6_memberships; 137 /* entry in bucket of inet6 addresses */ 138 LIST_ENTRY(in6_ifaddr) ia6_hash; 139 }; 140 141 /* List of in6_ifaddr's. */ 142 TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 143 LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 144 #endif 145 146 /* control structure to manage address selection policy */ 147 struct in6_addrpolicy { 148 struct sockaddr_in6 addr; /* prefix address */ 149 struct sockaddr_in6 addrmask; /* prefix mask */ 150 int preced; /* precedence */ 151 int label; /* matching label */ 152 u_quad_t use; /* statistics */ 153 }; 154 155 /* 156 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 157 */ 158 struct in6_ifstat { 159 uint64_t ifs6_in_receive; /* # of total input datagram */ 160 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 161 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 162 uint64_t ifs6_in_noroute; /* # of datagrams with no route */ 163 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 164 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 165 /* NOTE: increment on final dst if */ 166 uint64_t ifs6_in_truncated; /* # of truncated datagrams */ 167 uint64_t ifs6_in_discard; /* # of discarded datagrams */ 168 /* NOTE: fragment timeout is not here */ 169 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 170 /* NOTE: increment on final dst if */ 171 uint64_t ifs6_out_forward; /* # of datagrams forwarded */ 172 /* NOTE: increment on outgoing if */ 173 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 174 /* NOTE: does not include forwrads */ 175 uint64_t ifs6_out_discard; /* # of discarded datagrams */ 176 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */ 177 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 178 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 179 /* NOTE: this is # after fragment */ 180 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 181 /* NOTE: increment on final dst if */ 182 uint64_t ifs6_reass_ok; /* # of reassembled packets */ 183 /* NOTE: this is # after reass */ 184 /* NOTE: increment on final dst if */ 185 uint64_t ifs6_reass_fail; /* # of reass failures */ 186 /* NOTE: may not be packet count */ 187 /* NOTE: increment on final dst if */ 188 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 189 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 190 }; 191 192 /* 193 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 194 * XXX: I'm not sure if this file is the right place for this structure... 195 */ 196 struct icmp6_ifstat { 197 /* 198 * Input statistics 199 */ 200 /* ipv6IfIcmpInMsgs, total # of input messages */ 201 uint64_t ifs6_in_msg; 202 /* ipv6IfIcmpInErrors, # of input error messages */ 203 uint64_t ifs6_in_error; 204 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 205 uint64_t ifs6_in_dstunreach; 206 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 207 uint64_t ifs6_in_adminprohib; 208 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 209 uint64_t ifs6_in_timeexceed; 210 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 211 uint64_t ifs6_in_paramprob; 212 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 213 uint64_t ifs6_in_pkttoobig; 214 /* ipv6IfIcmpInEchos, # of input echo requests */ 215 uint64_t ifs6_in_echo; 216 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 217 uint64_t ifs6_in_echoreply; 218 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 219 uint64_t ifs6_in_routersolicit; 220 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 221 uint64_t ifs6_in_routeradvert; 222 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 223 uint64_t ifs6_in_neighborsolicit; 224 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 225 uint64_t ifs6_in_neighboradvert; 226 /* ipv6IfIcmpInRedirects, # of input redirects */ 227 uint64_t ifs6_in_redirect; 228 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 229 uint64_t ifs6_in_mldquery; 230 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 231 uint64_t ifs6_in_mldreport; 232 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 233 uint64_t ifs6_in_mlddone; 234 235 /* 236 * Output statistics. We should solve unresolved routing problem... 237 */ 238 /* ipv6IfIcmpOutMsgs, total # of output messages */ 239 uint64_t ifs6_out_msg; 240 /* ipv6IfIcmpOutErrors, # of output error messages */ 241 uint64_t ifs6_out_error; 242 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 243 uint64_t ifs6_out_dstunreach; 244 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 245 uint64_t ifs6_out_adminprohib; 246 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 247 uint64_t ifs6_out_timeexceed; 248 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 249 uint64_t ifs6_out_paramprob; 250 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 251 uint64_t ifs6_out_pkttoobig; 252 /* ipv6IfIcmpOutEchos, # of output echo requests */ 253 uint64_t ifs6_out_echo; 254 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 255 uint64_t ifs6_out_echoreply; 256 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 257 uint64_t ifs6_out_routersolicit; 258 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 259 uint64_t ifs6_out_routeradvert; 260 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 261 uint64_t ifs6_out_neighborsolicit; 262 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 263 uint64_t ifs6_out_neighboradvert; 264 /* ipv6IfIcmpOutRedirects, # of output redirects */ 265 uint64_t ifs6_out_redirect; 266 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 267 uint64_t ifs6_out_mldquery; 268 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 269 uint64_t ifs6_out_mldreport; 270 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 271 uint64_t ifs6_out_mlddone; 272 }; 273 274 struct in6_ifreq { 275 char ifr_name[IFNAMSIZ]; 276 union { 277 struct sockaddr_in6 ifru_addr; 278 struct sockaddr_in6 ifru_dstaddr; 279 int ifru_flags; 280 int ifru_flags6; 281 int ifru_metric; 282 caddr_t ifru_data; 283 struct in6_addrlifetime ifru_lifetime; 284 struct in6_ifstat ifru_stat; 285 struct icmp6_ifstat ifru_icmp6stat; 286 u_int32_t ifru_scope_id[16]; 287 } ifr_ifru; 288 }; 289 290 struct in6_aliasreq { 291 char ifra_name[IFNAMSIZ]; 292 struct sockaddr_in6 ifra_addr; 293 struct sockaddr_in6 ifra_dstaddr; 294 struct sockaddr_in6 ifra_prefixmask; 295 int ifra_flags; 296 struct in6_addrlifetime ifra_lifetime; 297 int ifra_vhid; 298 }; 299 300 /* pre-10.x compat */ 301 struct oin6_aliasreq { 302 char ifra_name[IFNAMSIZ]; 303 struct sockaddr_in6 ifra_addr; 304 struct sockaddr_in6 ifra_dstaddr; 305 struct sockaddr_in6 ifra_prefixmask; 306 int ifra_flags; 307 struct in6_addrlifetime ifra_lifetime; 308 }; 309 310 /* prefix type macro */ 311 #define IN6_PREFIX_ND 1 312 #define IN6_PREFIX_RR 2 313 314 /* 315 * prefix related flags passed between kernel(NDP related part) and 316 * user land command(ifconfig) and daemon(rtadvd). 317 */ 318 struct in6_prflags { 319 struct prf_ra { 320 u_char onlink : 1; 321 u_char autonomous : 1; 322 u_char reserved : 6; 323 } prf_ra; 324 u_char prf_reserved1; 325 u_short prf_reserved2; 326 /* want to put this on 4byte offset */ 327 struct prf_rr { 328 u_char decrvalid : 1; 329 u_char decrprefd : 1; 330 u_char reserved : 6; 331 } prf_rr; 332 u_char prf_reserved3; 333 u_short prf_reserved4; 334 }; 335 336 struct in6_prefixreq { 337 char ipr_name[IFNAMSIZ]; 338 u_char ipr_origin; 339 u_char ipr_plen; 340 u_int32_t ipr_vltime; 341 u_int32_t ipr_pltime; 342 struct in6_prflags ipr_flags; 343 struct sockaddr_in6 ipr_prefix; 344 }; 345 346 #define PR_ORIG_RA 0 347 #define PR_ORIG_RR 1 348 #define PR_ORIG_STATIC 2 349 #define PR_ORIG_KERNEL 3 350 351 #define ipr_raf_onlink ipr_flags.prf_ra.onlink 352 #define ipr_raf_auto ipr_flags.prf_ra.autonomous 353 354 #define ipr_statef_onlink ipr_flags.prf_state.onlink 355 356 #define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 357 #define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 358 359 struct in6_rrenumreq { 360 char irr_name[IFNAMSIZ]; 361 u_char irr_origin; 362 u_char irr_m_len; /* match len for matchprefix */ 363 u_char irr_m_minlen; /* minlen for matching prefix */ 364 u_char irr_m_maxlen; /* maxlen for matching prefix */ 365 u_char irr_u_uselen; /* uselen for adding prefix */ 366 u_char irr_u_keeplen; /* keeplen from matching prefix */ 367 struct irr_raflagmask { 368 u_char onlink : 1; 369 u_char autonomous : 1; 370 u_char reserved : 6; 371 } irr_raflagmask; 372 u_int32_t irr_vltime; 373 u_int32_t irr_pltime; 374 struct in6_prflags irr_flags; 375 struct sockaddr_in6 irr_matchprefix; 376 struct sockaddr_in6 irr_useprefix; 377 }; 378 379 #define irr_raf_mask_onlink irr_raflagmask.onlink 380 #define irr_raf_mask_auto irr_raflagmask.autonomous 381 #define irr_raf_mask_reserved irr_raflagmask.reserved 382 383 #define irr_raf_onlink irr_flags.prf_ra.onlink 384 #define irr_raf_auto irr_flags.prf_ra.autonomous 385 386 #define irr_statef_onlink irr_flags.prf_state.onlink 387 388 #define irr_rrf irr_flags.prf_rr 389 #define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 390 #define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 391 392 /* 393 * Given a pointer to an in6_ifaddr (ifaddr), 394 * return a pointer to the addr as a sockaddr_in6 395 */ 396 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 397 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 398 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 399 #define IA6_SIN6(ia) (&((ia)->ia_addr)) 400 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 401 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 402 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 403 404 #define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 405 406 #ifdef _KERNEL 407 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 408 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 409 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 410 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 411 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 412 #define IN6_MASK_ADDR(a, m) do { \ 413 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \ 414 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \ 415 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \ 416 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \ 417 } while (0) 418 #endif 419 420 #define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 421 #define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 422 423 #ifdef _KERNEL 424 /* 425 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 426 * we do not shift numbers for binary compatibility. 427 */ 428 #define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 429 #define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 430 #endif 431 432 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 433 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 434 435 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 436 #define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 437 #define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 438 439 #define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 440 #define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 441 #define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 442 443 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 444 445 #define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 446 #ifdef _KERNEL 447 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 448 #define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 449 #endif 450 #ifdef _KERNEL 451 #define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 452 #endif 453 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 454 #define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 455 #define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 456 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 457 #define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 458 #define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 459 460 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 461 #define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 462 #define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 463 #define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 464 465 #define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 466 #define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 467 468 #define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 469 470 #define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 471 #define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 472 #define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 473 474 #define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 475 #define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 476 #define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 477 #define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 478 #define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 479 struct in6_rrenumreq) /* change */ 480 #define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 481 struct in6_rrenumreq) /* set global */ 482 483 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 484 struct sioc_sg_req6) /* get s,g pkt cnt */ 485 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 486 struct sioc_mif_req6) /* get pkt cnt per if */ 487 488 #define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 489 #define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 490 491 #define IN6_IFF_ANYCAST 0x01 /* anycast address */ 492 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 493 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 494 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 495 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 496 #define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 497 * (used only at first SIOC* call) 498 */ 499 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 500 #define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 501 #define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */ 502 #define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 503 * XXX: this should be temporary. 504 */ 505 506 /* do not input/output */ 507 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 508 509 #ifdef _KERNEL 510 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 511 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 512 #endif 513 514 #ifdef _KERNEL 515 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 516 VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 517 VNET_DECLARE(u_long, in6_ifaddrhmask); 518 #define V_in6_ifaddrhead VNET(in6_ifaddrhead) 519 #define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 520 #define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 521 522 #define IN6ADDR_NHASH_LOG2 8 523 #define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 524 #define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 525 #define IN6ADDR_HASH(x) \ 526 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 527 528 static __inline uint32_t 529 in6_addrhash(const struct in6_addr *in6) 530 { 531 uint32_t x; 532 533 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 534 in6->s6_addr32[3]; 535 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 536 } 537 538 extern struct rwlock in6_ifaddr_lock; 539 #define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 540 #define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 541 #define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 542 #define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 543 #define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 544 #define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 545 #define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 546 547 #define in6_ifstat_inc(ifp, tag) \ 548 do { \ 549 if (ifp) \ 550 counter_u64_add(((struct in6_ifextra *) \ 551 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \ 552 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\ 553 } while (/*CONSTCOND*/ 0) 554 555 extern u_char inet6ctlerrmap[]; 556 VNET_DECLARE(unsigned long, in6_maxmtu); 557 #define V_in6_maxmtu VNET(in6_maxmtu) 558 #endif /* _KERNEL */ 559 560 /* 561 * IPv6 multicast MLD-layer source entry. 562 */ 563 struct ip6_msource { 564 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 565 struct in6_addr im6s_addr; 566 struct im6s_st { 567 uint16_t ex; /* # of exclusive members */ 568 uint16_t in; /* # of inclusive members */ 569 } im6s_st[2]; /* state at t0, t1 */ 570 uint8_t im6s_stp; /* pending query */ 571 }; 572 RB_HEAD(ip6_msource_tree, ip6_msource); 573 574 /* 575 * IPv6 multicast PCB-layer source entry. 576 * 577 * NOTE: overlapping use of struct ip6_msource fields at start. 578 */ 579 struct in6_msource { 580 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 581 struct in6_addr im6s_addr; /* Common field */ 582 uint8_t im6sl_st[2]; /* state before/at commit */ 583 }; 584 585 #ifdef _KERNEL 586 /* 587 * IPv6 source tree comparison function. 588 * 589 * An ordered predicate is necessary; bcmp() is not documented to return 590 * an indication of order, memcmp() is, and is an ISO C99 requirement. 591 */ 592 static __inline int 593 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 594 { 595 596 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 597 } 598 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 599 #endif /* _KERNEL */ 600 601 /* 602 * IPv6 multicast PCB-layer group filter descriptor. 603 */ 604 struct in6_mfilter { 605 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 606 u_long im6f_nsrc; /* # of source entries */ 607 uint8_t im6f_st[2]; /* state before/at commit */ 608 }; 609 610 /* 611 * Legacy KAME IPv6 multicast membership descriptor. 612 */ 613 struct in6_multi_mship { 614 struct in6_multi *i6mm_maddr; 615 LIST_ENTRY(in6_multi_mship) i6mm_chain; 616 }; 617 618 /* 619 * IPv6 group descriptor. 620 * 621 * For every entry on an ifnet's if_multiaddrs list which represents 622 * an IP multicast group, there is one of these structures. 623 * 624 * If any source filters are present, then a node will exist in the RB-tree 625 * to permit fast lookup by source whenever an operation takes place. 626 * This permits pre-order traversal when we issue reports. 627 * Source filter trees are kept separately from the socket layer to 628 * greatly simplify locking. 629 * 630 * When MLDv2 is active, in6m_timer is the response to group query timer. 631 * The state-change timer in6m_sctimer is separate; whenever state changes 632 * for the group the state change record is generated and transmitted, 633 * and kept if retransmissions are necessary. 634 * 635 * FUTURE: in6m_link is now only used when groups are being purged 636 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 637 * because it is at the very start of the struct, we can't do this 638 * w/o breaking the ABI for ifmcstat. 639 */ 640 struct in6_multi { 641 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 642 struct in6_addr in6m_addr; /* IPv6 multicast address */ 643 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 644 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 645 u_int in6m_refcount; /* reference count */ 646 u_int in6m_state; /* state of the membership */ 647 u_int in6m_timer; /* MLD6 listener report timer */ 648 649 /* New fields for MLDv2 follow. */ 650 struct mld_ifinfo *in6m_mli; /* MLD info */ 651 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 652 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 653 u_long in6m_nsrc; /* # of tree entries */ 654 655 struct ifqueue in6m_scq; /* queue of pending 656 * state-change packets */ 657 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 658 uint16_t in6m_sctimer; /* state-change timer */ 659 uint16_t in6m_scrv; /* state-change rexmit count */ 660 661 /* 662 * SSM state counters which track state at T0 (the time the last 663 * state-change report's RV timer went to zero) and T1 664 * (time of pending report, i.e. now). 665 * Used for computing MLDv2 state-change reports. Several refcounts 666 * are maintained here to optimize for common use-cases. 667 */ 668 struct in6m_st { 669 uint16_t iss_fmode; /* MLD filter mode */ 670 uint16_t iss_asm; /* # of ASM listeners */ 671 uint16_t iss_ex; /* # of exclusive members */ 672 uint16_t iss_in; /* # of inclusive members */ 673 uint16_t iss_rec; /* # of recorded sources */ 674 } in6m_st[2]; /* state at t0, t1 */ 675 }; 676 677 /* 678 * Helper function to derive the filter mode on a source entry 679 * from its internal counters. Predicates are: 680 * A source is only excluded if all listeners exclude it. 681 * A source is only included if no listeners exclude it, 682 * and at least one listener includes it. 683 * May be used by ifmcstat(8). 684 */ 685 static __inline uint8_t 686 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 687 uint8_t t) 688 { 689 690 t = !!t; 691 if (inm->in6m_st[t].iss_ex > 0 && 692 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 693 return (MCAST_EXCLUDE); 694 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 695 return (MCAST_INCLUDE); 696 return (MCAST_UNDEFINED); 697 } 698 699 #ifdef _KERNEL 700 701 /* 702 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 703 * before link layer multicast locks in the lock order. In most cases, 704 * consumers of IN_*_MULTI() macros should acquire the locks before 705 * calling them; users of the in_{add,del}multi() functions should not. 706 */ 707 extern struct mtx in6_multi_mtx; 708 #define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 709 #define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 710 #define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 711 #define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 712 713 /* 714 * Look up an in6_multi record for an IPv6 multicast address 715 * on the interface ifp. 716 * If no record found, return NULL. 717 * 718 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 719 */ 720 static __inline struct in6_multi * 721 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 722 { 723 struct ifmultiaddr *ifma; 724 struct in6_multi *inm; 725 726 IN6_MULTI_LOCK_ASSERT(); 727 IF_ADDR_LOCK_ASSERT(ifp); 728 729 inm = NULL; 730 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 731 if (ifma->ifma_addr->sa_family == AF_INET6) { 732 inm = (struct in6_multi *)ifma->ifma_protospec; 733 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 734 break; 735 inm = NULL; 736 } 737 } 738 return (inm); 739 } 740 741 /* 742 * Wrapper for in6m_lookup_locked(). 743 * 744 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 745 */ 746 static __inline struct in6_multi * 747 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 748 { 749 struct in6_multi *inm; 750 751 IN6_MULTI_LOCK(); 752 IF_ADDR_RLOCK(ifp); 753 inm = in6m_lookup_locked(ifp, mcaddr); 754 IF_ADDR_RUNLOCK(ifp); 755 IN6_MULTI_UNLOCK(); 756 757 return (inm); 758 } 759 760 /* Acquire an in6_multi record. */ 761 static __inline void 762 in6m_acquire_locked(struct in6_multi *inm) 763 { 764 765 IN6_MULTI_LOCK_ASSERT(); 766 ++inm->in6m_refcount; 767 } 768 769 struct ip6_moptions; 770 struct sockopt; 771 772 /* Multicast KPIs. */ 773 int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 774 const struct sockaddr *, const struct sockaddr *); 775 int in6_mc_join(struct ifnet *, const struct in6_addr *, 776 struct in6_mfilter *, struct in6_multi **, int); 777 int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 778 struct in6_mfilter *, struct in6_multi **, int); 779 int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 780 int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 781 void in6m_clear_recorded(struct in6_multi *); 782 void in6m_commit(struct in6_multi *); 783 void in6m_print(const struct in6_multi *); 784 int in6m_record_source(struct in6_multi *, const struct in6_addr *); 785 void in6m_release_locked(struct in6_multi *); 786 void ip6_freemoptions(struct ip6_moptions *); 787 int ip6_getmoptions(struct inpcb *, struct sockopt *); 788 int ip6_setmoptions(struct inpcb *, struct sockopt *); 789 790 /* Legacy KAME multicast KPIs. */ 791 struct in6_multi_mship * 792 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 793 int in6_leavegroup(struct in6_multi_mship *); 794 795 /* flags to in6_update_ifa */ 796 #define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 797 798 int in6_mask2len(struct in6_addr *, u_char *); 799 int in6_control(struct socket *, u_long, caddr_t, struct ifnet *, 800 struct thread *); 801 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 802 struct in6_ifaddr *, int); 803 void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *, 804 const struct in6_addr *); 805 void in6_purgeaddr(struct ifaddr *); 806 int in6if_do_dad(struct ifnet *); 807 void in6_savemkludge(struct in6_ifaddr *); 808 void *in6_domifattach(struct ifnet *); 809 void in6_domifdetach(struct ifnet *, void *); 810 int in6_domifmtu(struct ifnet *); 811 void in6_setmaxmtu(void); 812 int in6_if2idlen(struct ifnet *); 813 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 814 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *); 815 struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t); 816 struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 817 char *ip6_sprintf(char *, const struct in6_addr *); 818 int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 819 int in6_matchlen(struct in6_addr *, struct in6_addr *); 820 int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 821 void in6_prefixlen2mask(struct in6_addr *, int); 822 int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 823 struct ifnet *); 824 int in6_prefix_add_ifid(int, struct in6_ifaddr *); 825 void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 826 void in6_purgeprefix(struct ifnet *); 827 828 int in6_is_addr_deprecated(struct sockaddr_in6 *); 829 int in6_src_ioctl(u_long, caddr_t); 830 831 void in6_newaddrmsg(struct in6_ifaddr *, int); 832 /* 833 * Extended API for IPv6 FIB support. 834 */ 835 void in6_rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 836 int, struct sockaddr *, u_int); 837 int in6_rtrequest(int, struct sockaddr *, struct sockaddr *, 838 struct sockaddr *, int, struct rtentry **, u_int); 839 void in6_rtalloc(struct route_in6 *, u_int); 840 void in6_rtalloc_ign(struct route_in6 *, u_long, u_int); 841 struct rtentry *in6_rtalloc1(struct sockaddr *, int, u_long, u_int); 842 #endif /* _KERNEL */ 843 844 #endif /* _NETINET6_IN6_VAR_H_ */ 845