1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 itojun Exp $ 32 */ 33 34 /*- 35 * Copyright (c) 1985, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 */ 62 63 #ifndef _NETINET6_IN6_VAR_H_ 64 #define _NETINET6_IN6_VAR_H_ 65 66 #include <sys/tree.h> 67 #include <sys/counter.h> 68 69 #ifdef _KERNEL 70 #include <sys/fnv_hash.h> 71 #include <sys/libkern.h> 72 #endif 73 74 /* 75 * Interface address, Internet version. One of these structures 76 * is allocated for each interface with an Internet address. 77 * The ifaddr structure contains the protocol-independent part 78 * of the structure and is assumed to be first. 79 */ 80 81 /* 82 * pltime/vltime are just for future reference (required to implements 2 83 * hour rule for hosts). they should never be modified by nd6_timeout or 84 * anywhere else. 85 * userland -> kernel: accept pltime/vltime 86 * kernel -> userland: throw up everything 87 * in kernel: modify preferred/expire only 88 */ 89 struct in6_addrlifetime { 90 time_t ia6t_expire; /* valid lifetime expiration time */ 91 time_t ia6t_preferred; /* preferred lifetime expiration time */ 92 u_int32_t ia6t_vltime; /* valid lifetime */ 93 u_int32_t ia6t_pltime; /* prefix lifetime */ 94 }; 95 96 struct nd_ifinfo; 97 struct scope6_id; 98 struct lltable; 99 struct mld_ifsoftc; 100 struct in6_multi; 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_ifsoftc *mld_ifinfo; 109 }; 110 111 #define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 112 113 #ifdef _KERNEL 114 115 SLIST_HEAD(in6_multi_head, in6_multi); 116 MALLOC_DECLARE(M_IP6MADDR); 117 118 struct in6_ifaddr { 119 struct ifaddr ia_ifa; /* protocol-independent info */ 120 #define ia_ifp ia_ifa.ifa_ifp 121 #define ia_flags ia_ifa.ifa_flags 122 struct sockaddr_in6 ia_addr; /* interface address */ 123 struct sockaddr_in6 ia_net; /* network number of interface */ 124 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 125 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 126 u_int32_t ia_plen; /* prefix length */ 127 CK_STAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 128 int ia6_flags; 129 130 struct in6_addrlifetime ia6_lifetime; 131 time_t ia6_createtime; /* the creation time of this address, which is 132 * currently used for temporary addresses only. 133 */ 134 time_t ia6_updatetime; 135 136 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 137 struct nd_prefix *ia6_ndpr; 138 139 /* multicast addresses joined from the kernel */ 140 LIST_HEAD(, in6_multi_mship) ia6_memberships; 141 /* entry in bucket of inet6 addresses */ 142 CK_LIST_ENTRY(in6_ifaddr) ia6_hash; 143 }; 144 145 /* List of in6_ifaddr's. */ 146 CK_STAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 147 CK_LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 148 #endif /* _KERNEL */ 149 150 /* control structure to manage address selection policy */ 151 struct in6_addrpolicy { 152 struct sockaddr_in6 addr; /* prefix address */ 153 struct sockaddr_in6 addrmask; /* prefix mask */ 154 int preced; /* precedence */ 155 int label; /* matching label */ 156 u_quad_t use; /* statistics */ 157 }; 158 159 /* 160 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 161 */ 162 struct in6_ifstat { 163 uint64_t ifs6_in_receive; /* # of total input datagram */ 164 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 165 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 166 uint64_t ifs6_in_noroute; /* # of datagrams with no route */ 167 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 168 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 169 /* NOTE: increment on final dst if */ 170 uint64_t ifs6_in_truncated; /* # of truncated datagrams */ 171 uint64_t ifs6_in_discard; /* # of discarded datagrams */ 172 /* NOTE: fragment timeout is not here */ 173 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 174 /* NOTE: increment on final dst if */ 175 uint64_t ifs6_out_forward; /* # of datagrams forwarded */ 176 /* NOTE: increment on outgoing if */ 177 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 178 /* NOTE: does not include forwrads */ 179 uint64_t ifs6_out_discard; /* # of discarded datagrams */ 180 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */ 181 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 182 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 183 /* NOTE: this is # after fragment */ 184 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 185 /* NOTE: increment on final dst if */ 186 uint64_t ifs6_reass_ok; /* # of reassembled packets */ 187 /* NOTE: this is # after reass */ 188 /* NOTE: increment on final dst if */ 189 uint64_t ifs6_reass_fail; /* # of reass failures */ 190 /* NOTE: may not be packet count */ 191 /* NOTE: increment on final dst if */ 192 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 193 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 194 }; 195 196 /* 197 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 198 * XXX: I'm not sure if this file is the right place for this structure... 199 */ 200 struct icmp6_ifstat { 201 /* 202 * Input statistics 203 */ 204 /* ipv6IfIcmpInMsgs, total # of input messages */ 205 uint64_t ifs6_in_msg; 206 /* ipv6IfIcmpInErrors, # of input error messages */ 207 uint64_t ifs6_in_error; 208 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 209 uint64_t ifs6_in_dstunreach; 210 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 211 uint64_t ifs6_in_adminprohib; 212 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 213 uint64_t ifs6_in_timeexceed; 214 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 215 uint64_t ifs6_in_paramprob; 216 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 217 uint64_t ifs6_in_pkttoobig; 218 /* ipv6IfIcmpInEchos, # of input echo requests */ 219 uint64_t ifs6_in_echo; 220 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 221 uint64_t ifs6_in_echoreply; 222 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 223 uint64_t ifs6_in_routersolicit; 224 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 225 uint64_t ifs6_in_routeradvert; 226 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 227 uint64_t ifs6_in_neighborsolicit; 228 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 229 uint64_t ifs6_in_neighboradvert; 230 /* ipv6IfIcmpInRedirects, # of input redirects */ 231 uint64_t ifs6_in_redirect; 232 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 233 uint64_t ifs6_in_mldquery; 234 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 235 uint64_t ifs6_in_mldreport; 236 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 237 uint64_t ifs6_in_mlddone; 238 239 /* 240 * Output statistics. We should solve unresolved routing problem... 241 */ 242 /* ipv6IfIcmpOutMsgs, total # of output messages */ 243 uint64_t ifs6_out_msg; 244 /* ipv6IfIcmpOutErrors, # of output error messages */ 245 uint64_t ifs6_out_error; 246 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 247 uint64_t ifs6_out_dstunreach; 248 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 249 uint64_t ifs6_out_adminprohib; 250 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 251 uint64_t ifs6_out_timeexceed; 252 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 253 uint64_t ifs6_out_paramprob; 254 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 255 uint64_t ifs6_out_pkttoobig; 256 /* ipv6IfIcmpOutEchos, # of output echo requests */ 257 uint64_t ifs6_out_echo; 258 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 259 uint64_t ifs6_out_echoreply; 260 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 261 uint64_t ifs6_out_routersolicit; 262 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 263 uint64_t ifs6_out_routeradvert; 264 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 265 uint64_t ifs6_out_neighborsolicit; 266 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 267 uint64_t ifs6_out_neighboradvert; 268 /* ipv6IfIcmpOutRedirects, # of output redirects */ 269 uint64_t ifs6_out_redirect; 270 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 271 uint64_t ifs6_out_mldquery; 272 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 273 uint64_t ifs6_out_mldreport; 274 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 275 uint64_t ifs6_out_mlddone; 276 }; 277 278 struct in6_ifreq { 279 char ifr_name[IFNAMSIZ]; 280 union { 281 struct sockaddr_in6 ifru_addr; 282 struct sockaddr_in6 ifru_dstaddr; 283 int ifru_flags; 284 int ifru_flags6; 285 int ifru_metric; 286 caddr_t ifru_data; 287 struct in6_addrlifetime ifru_lifetime; 288 struct in6_ifstat ifru_stat; 289 struct icmp6_ifstat ifru_icmp6stat; 290 u_int32_t ifru_scope_id[16]; 291 } ifr_ifru; 292 }; 293 294 struct in6_aliasreq { 295 char ifra_name[IFNAMSIZ]; 296 struct sockaddr_in6 ifra_addr; 297 struct sockaddr_in6 ifra_dstaddr; 298 struct sockaddr_in6 ifra_prefixmask; 299 int ifra_flags; 300 struct in6_addrlifetime ifra_lifetime; 301 int ifra_vhid; 302 }; 303 304 /* pre-10.x compat */ 305 struct oin6_aliasreq { 306 char ifra_name[IFNAMSIZ]; 307 struct sockaddr_in6 ifra_addr; 308 struct sockaddr_in6 ifra_dstaddr; 309 struct sockaddr_in6 ifra_prefixmask; 310 int ifra_flags; 311 struct in6_addrlifetime ifra_lifetime; 312 }; 313 314 /* prefix type macro */ 315 #define IN6_PREFIX_ND 1 316 #define IN6_PREFIX_RR 2 317 318 /* 319 * prefix related flags passed between kernel(NDP related part) and 320 * user land command(ifconfig) and daemon(rtadvd). 321 */ 322 struct in6_prflags { 323 struct prf_ra { 324 u_char onlink : 1; 325 u_char autonomous : 1; 326 u_char ra_derived: 1; 327 u_char reserved : 5; 328 } prf_ra; 329 u_char prf_reserved1; 330 u_short prf_reserved2; 331 /* want to put this on 4byte offset */ 332 struct prf_rr { 333 u_char decrvalid : 1; 334 u_char decrprefd : 1; 335 u_char reserved : 6; 336 } prf_rr; 337 u_char prf_reserved3; 338 u_short prf_reserved4; 339 }; 340 341 struct in6_prefixreq { 342 char ipr_name[IFNAMSIZ]; 343 u_char ipr_origin; 344 u_char ipr_plen; 345 u_int32_t ipr_vltime; 346 u_int32_t ipr_pltime; 347 struct in6_prflags ipr_flags; 348 struct sockaddr_in6 ipr_prefix; 349 }; 350 351 #define PR_ORIG_RA 0 352 #define PR_ORIG_RR 1 353 #define PR_ORIG_STATIC 2 354 #define PR_ORIG_KERNEL 3 355 356 #define ipr_raf_onlink ipr_flags.prf_ra.onlink 357 #define ipr_raf_auto ipr_flags.prf_ra.autonomous 358 #define ipr_raf_ra_derived ipr_flags.prf_ra.ra_derived 359 360 #define ipr_statef_onlink ipr_flags.prf_state.onlink 361 362 #define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 363 #define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 364 365 struct in6_rrenumreq { 366 char irr_name[IFNAMSIZ]; 367 u_char irr_origin; 368 u_char irr_m_len; /* match len for matchprefix */ 369 u_char irr_m_minlen; /* minlen for matching prefix */ 370 u_char irr_m_maxlen; /* maxlen for matching prefix */ 371 u_char irr_u_uselen; /* uselen for adding prefix */ 372 u_char irr_u_keeplen; /* keeplen from matching prefix */ 373 struct irr_raflagmask { 374 u_char onlink : 1; 375 u_char autonomous : 1; 376 u_char reserved : 6; 377 } irr_raflagmask; 378 u_int32_t irr_vltime; 379 u_int32_t irr_pltime; 380 struct in6_prflags irr_flags; 381 struct sockaddr_in6 irr_matchprefix; 382 struct sockaddr_in6 irr_useprefix; 383 }; 384 385 #define irr_raf_mask_onlink irr_raflagmask.onlink 386 #define irr_raf_mask_auto irr_raflagmask.autonomous 387 #define irr_raf_mask_reserved irr_raflagmask.reserved 388 389 #define irr_raf_onlink irr_flags.prf_ra.onlink 390 #define irr_raf_auto irr_flags.prf_ra.autonomous 391 392 #define irr_statef_onlink irr_flags.prf_state.onlink 393 394 #define irr_rrf irr_flags.prf_rr 395 #define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 396 #define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 397 398 /* 399 * Given a pointer to an in6_ifaddr (ifaddr), 400 * return a pointer to the addr as a sockaddr_in6 401 */ 402 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 403 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 404 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 405 #define IA6_SIN6(ia) (&((ia)->ia_addr)) 406 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 407 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 408 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 409 #define IFA_MASKIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_netmask))->sin6_addr) 410 411 #define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 412 413 #ifdef _KERNEL 414 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 415 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 416 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 417 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 418 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 419 #define IN6_MASK_ADDR(a, m) do { \ 420 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \ 421 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \ 422 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \ 423 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \ 424 } while (0) 425 #endif 426 427 #define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 428 #define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 429 430 #ifdef _KERNEL 431 /* 432 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 433 * we do not shift numbers for binary compatibility. 434 */ 435 #define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 436 #define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 437 #endif 438 439 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 440 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 441 442 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 443 #define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 444 #define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 445 446 #define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 447 #define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 448 #define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 449 450 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 451 452 #ifdef _KERNEL 453 #define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 454 #endif 455 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 456 #define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 457 #define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 458 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 459 #define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 460 #define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 461 462 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 463 #define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 464 #define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 465 466 #define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 467 #define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 468 469 #define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 470 471 #define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 472 #define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 473 #define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 474 475 #define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 476 #define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 477 #define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 478 #define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 479 #define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 480 struct in6_rrenumreq) /* change */ 481 #define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 482 struct in6_rrenumreq) /* set global */ 483 484 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 485 struct sioc_sg_req6) /* get s,g pkt cnt */ 486 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 487 struct sioc_mif_req6) /* get pkt cnt per if */ 488 489 #define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 490 #define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 491 492 #define IN6_IFF_ANYCAST 0x01 /* anycast address */ 493 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 494 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 495 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 496 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 497 #define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 498 * (obsolete) 499 */ 500 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 501 #define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 502 #define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */ 503 504 /* do not input/output */ 505 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 506 507 #ifdef _KERNEL 508 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 509 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 510 #endif 511 512 #ifdef _KERNEL 513 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 514 VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 515 VNET_DECLARE(u_long, in6_ifaddrhmask); 516 #define V_in6_ifaddrhead VNET(in6_ifaddrhead) 517 #define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 518 #define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 519 520 #define IN6ADDR_NHASH_LOG2 8 521 #define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 522 #define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 523 #define IN6ADDR_HASH(x) \ 524 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 525 526 static __inline uint32_t 527 in6_addrhash(const struct in6_addr *in6) 528 { 529 uint32_t x; 530 531 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 532 in6->s6_addr32[3]; 533 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 534 } 535 536 extern struct rmlock in6_ifaddr_lock; 537 #define IN6_IFADDR_LOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_LOCKED) 538 #define IN6_IFADDR_RLOCK(t) rm_rlock(&in6_ifaddr_lock, (t)) 539 #define IN6_IFADDR_RLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_RLOCKED) 540 #define IN6_IFADDR_RUNLOCK(t) rm_runlock(&in6_ifaddr_lock, (t)) 541 #define IN6_IFADDR_WLOCK() rm_wlock(&in6_ifaddr_lock) 542 #define IN6_IFADDR_WLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_WLOCKED) 543 #define IN6_IFADDR_WUNLOCK() rm_wunlock(&in6_ifaddr_lock) 544 545 #define in6_ifstat_inc(ifp, tag) \ 546 do { \ 547 if (ifp) \ 548 counter_u64_add(((struct in6_ifextra *) \ 549 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \ 550 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\ 551 } while (/*CONSTCOND*/ 0) 552 553 VNET_DECLARE(unsigned long, in6_maxmtu); 554 #define V_in6_maxmtu VNET(in6_maxmtu) 555 #endif /* _KERNEL */ 556 557 /* 558 * IPv6 multicast MLD-layer source entry. 559 */ 560 struct ip6_msource { 561 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 562 struct in6_addr im6s_addr; 563 struct im6s_st { 564 uint16_t ex; /* # of exclusive members */ 565 uint16_t in; /* # of inclusive members */ 566 } im6s_st[2]; /* state at t0, t1 */ 567 uint8_t im6s_stp; /* pending query */ 568 }; 569 RB_HEAD(ip6_msource_tree, ip6_msource); 570 571 /* 572 * IPv6 multicast PCB-layer source entry. 573 * 574 * NOTE: overlapping use of struct ip6_msource fields at start. 575 */ 576 struct in6_msource { 577 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 578 struct in6_addr im6s_addr; /* Common field */ 579 uint8_t im6sl_st[2]; /* state before/at commit */ 580 }; 581 582 #ifdef _KERNEL 583 /* 584 * IPv6 source tree comparison function. 585 * 586 * An ordered predicate is necessary; bcmp() is not documented to return 587 * an indication of order, memcmp() is, and is an ISO C99 requirement. 588 */ 589 static __inline int 590 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 591 { 592 593 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 594 } 595 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 596 597 /* 598 * IPv6 multicast PCB-layer group filter descriptor. 599 */ 600 struct in6_mfilter { 601 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 602 u_long im6f_nsrc; /* # of source entries */ 603 uint8_t im6f_st[2]; /* state before/at commit */ 604 struct in6_multi *im6f_in6m; /* associated multicast address */ 605 STAILQ_ENTRY(in6_mfilter) im6f_entry; /* list entry */ 606 }; 607 608 /* 609 * Helper types and functions for IPv4 multicast filters. 610 */ 611 STAILQ_HEAD(ip6_mfilter_head, in6_mfilter); 612 613 struct in6_mfilter *ip6_mfilter_alloc(int mflags, int st0, int st1); 614 void ip6_mfilter_free(struct in6_mfilter *); 615 616 static inline void 617 ip6_mfilter_init(struct ip6_mfilter_head *head) 618 { 619 620 STAILQ_INIT(head); 621 } 622 623 static inline struct in6_mfilter * 624 ip6_mfilter_first(const struct ip6_mfilter_head *head) 625 { 626 627 return (STAILQ_FIRST(head)); 628 } 629 630 static inline void 631 ip6_mfilter_insert(struct ip6_mfilter_head *head, struct in6_mfilter *imf) 632 { 633 634 STAILQ_INSERT_TAIL(head, imf, im6f_entry); 635 } 636 637 static inline void 638 ip6_mfilter_remove(struct ip6_mfilter_head *head, struct in6_mfilter *imf) 639 { 640 641 STAILQ_REMOVE(head, imf, in6_mfilter, im6f_entry); 642 } 643 644 #define IP6_MFILTER_FOREACH(imf, head) \ 645 STAILQ_FOREACH(imf, head, im6f_entry) 646 647 static inline size_t 648 ip6_mfilter_count(struct ip6_mfilter_head *head) 649 { 650 struct in6_mfilter *imf; 651 size_t num = 0; 652 653 STAILQ_FOREACH(imf, head, im6f_entry) 654 num++; 655 return (num); 656 } 657 658 /* 659 * Legacy KAME IPv6 multicast membership descriptor. 660 */ 661 struct in6_multi_mship { 662 struct in6_multi *i6mm_maddr; 663 LIST_ENTRY(in6_multi_mship) i6mm_chain; 664 }; 665 666 /* 667 * IPv6 group descriptor. 668 * 669 * For every entry on an ifnet's if_multiaddrs list which represents 670 * an IP multicast group, there is one of these structures. 671 * 672 * If any source filters are present, then a node will exist in the RB-tree 673 * to permit fast lookup by source whenever an operation takes place. 674 * This permits pre-order traversal when we issue reports. 675 * Source filter trees are kept separately from the socket layer to 676 * greatly simplify locking. 677 * 678 * When MLDv2 is active, in6m_timer is the response to group query timer. 679 * The state-change timer in6m_sctimer is separate; whenever state changes 680 * for the group the state change record is generated and transmitted, 681 * and kept if retransmissions are necessary. 682 * 683 * FUTURE: in6m_link is now only used when groups are being purged 684 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 685 * because it is at the very start of the struct, we can't do this 686 * w/o breaking the ABI for ifmcstat. 687 */ 688 struct in6_multi { 689 struct in6_addr in6m_addr; /* IPv6 multicast address */ 690 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 691 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 692 u_int in6m_refcount; /* reference count */ 693 u_int in6m_state; /* state of the membership */ 694 u_int in6m_timer; /* MLD6 listener report timer */ 695 696 /* New fields for MLDv2 follow. */ 697 struct mld_ifsoftc *in6m_mli; /* MLD info */ 698 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 699 SLIST_ENTRY(in6_multi) in6m_defer; /* deferred MLDv1 */ 700 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 701 u_long in6m_nsrc; /* # of tree entries */ 702 703 struct mbufq in6m_scq; /* queue of pending 704 * state-change packets */ 705 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 706 uint16_t in6m_sctimer; /* state-change timer */ 707 uint16_t in6m_scrv; /* state-change rexmit count */ 708 709 /* 710 * SSM state counters which track state at T0 (the time the last 711 * state-change report's RV timer went to zero) and T1 712 * (time of pending report, i.e. now). 713 * Used for computing MLDv2 state-change reports. Several refcounts 714 * are maintained here to optimize for common use-cases. 715 */ 716 struct in6m_st { 717 uint16_t iss_fmode; /* MLD filter mode */ 718 uint16_t iss_asm; /* # of ASM listeners */ 719 uint16_t iss_ex; /* # of exclusive members */ 720 uint16_t iss_in; /* # of inclusive members */ 721 uint16_t iss_rec; /* # of recorded sources */ 722 } in6m_st[2]; /* state at t0, t1 */ 723 }; 724 725 void in6m_disconnect_locked(struct in6_multi_head *inmh, struct in6_multi *inm); 726 727 /* 728 * Helper function to derive the filter mode on a source entry 729 * from its internal counters. Predicates are: 730 * A source is only excluded if all listeners exclude it. 731 * A source is only included if no listeners exclude it, 732 * and at least one listener includes it. 733 * May be used by ifmcstat(8). 734 */ 735 static __inline uint8_t 736 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 737 uint8_t t) 738 { 739 740 t = !!t; 741 if (inm->in6m_st[t].iss_ex > 0 && 742 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 743 return (MCAST_EXCLUDE); 744 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 745 return (MCAST_INCLUDE); 746 return (MCAST_UNDEFINED); 747 } 748 749 /* 750 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 751 * before link layer multicast locks in the lock order. In most cases, 752 * consumers of IN_*_MULTI() macros should acquire the locks before 753 * calling them; users of the in_{add,del}multi() functions should not. 754 */ 755 extern struct mtx in6_multi_list_mtx; 756 extern struct sx in6_multi_sx; 757 758 #define IN6_MULTI_LIST_LOCK() mtx_lock(&in6_multi_list_mtx) 759 #define IN6_MULTI_LIST_UNLOCK() mtx_unlock(&in6_multi_list_mtx) 760 #define IN6_MULTI_LIST_LOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_OWNED) 761 #define IN6_MULTI_LIST_UNLOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_NOTOWNED) 762 763 #define IN6_MULTI_LOCK() sx_xlock(&in6_multi_sx) 764 #define IN6_MULTI_UNLOCK() sx_xunlock(&in6_multi_sx) 765 #define IN6_MULTI_LOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XLOCKED) 766 #define IN6_MULTI_UNLOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XUNLOCKED) 767 768 /* 769 * Get the in6_multi pointer from a ifmultiaddr. 770 * Returns NULL if ifmultiaddr is no longer valid. 771 */ 772 static __inline struct in6_multi * 773 in6m_ifmultiaddr_get_inm(struct ifmultiaddr *ifma) 774 { 775 776 return ((ifma->ifma_addr->sa_family != AF_INET6 || 777 (ifma->ifma_flags & IFMA_F_ENQUEUED) == 0) ? NULL : 778 ifma->ifma_protospec); 779 } 780 781 struct in6_multi * 782 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr); 783 784 /* 785 * Wrapper for in6m_lookup_locked(). 786 * 787 * SMPng: Assumes network epoch entered and that IN6_MULTI_LOCK() isn't held. 788 */ 789 static __inline struct in6_multi * 790 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 791 { 792 struct in6_multi *inm; 793 794 NET_EPOCH_ASSERT(); 795 796 IN6_MULTI_LIST_LOCK(); 797 inm = in6m_lookup_locked(ifp, mcaddr); 798 IN6_MULTI_LIST_UNLOCK(); 799 800 return (inm); 801 } 802 803 /* Acquire an in6_multi record. */ 804 static __inline void 805 in6m_acquire_locked(struct in6_multi *inm) 806 { 807 808 IN6_MULTI_LIST_LOCK_ASSERT(); 809 ++inm->in6m_refcount; 810 } 811 812 static __inline void 813 in6m_acquire(struct in6_multi *inm) 814 { 815 IN6_MULTI_LIST_LOCK(); 816 in6m_acquire_locked(inm); 817 IN6_MULTI_LIST_UNLOCK(); 818 } 819 820 static __inline void 821 in6m_rele_locked(struct in6_multi_head *inmh, struct in6_multi *inm) 822 { 823 KASSERT(inm->in6m_refcount > 0, ("refcount == %d inm: %p", inm->in6m_refcount, inm)); 824 IN6_MULTI_LIST_LOCK_ASSERT(); 825 826 if (--inm->in6m_refcount == 0) { 827 MPASS(inm->in6m_ifp == NULL); 828 inm->in6m_ifma->ifma_protospec = NULL; 829 MPASS(inm->in6m_ifma->ifma_llifma == NULL); 830 SLIST_INSERT_HEAD(inmh, inm, in6m_nrele); 831 } 832 } 833 834 struct ip6_moptions; 835 struct sockopt; 836 struct inpcbinfo; 837 struct rib_head; 838 struct ucred; 839 840 /* Multicast KPIs. */ 841 int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 842 const struct sockaddr *, const struct sockaddr *); 843 int in6_joingroup(struct ifnet *, const struct in6_addr *, 844 struct in6_mfilter *, struct in6_multi **, int); 845 int in6_leavegroup(struct in6_multi *, struct in6_mfilter *); 846 int in6_leavegroup_locked(struct in6_multi *, struct in6_mfilter *); 847 void in6m_clear_recorded(struct in6_multi *); 848 void in6m_commit(struct in6_multi *); 849 void in6m_print(const struct in6_multi *); 850 int in6m_record_source(struct in6_multi *, const struct in6_addr *); 851 void in6m_release_list_deferred(struct in6_multi_head *); 852 void in6m_release_wait(void *); 853 void ip6_freemoptions(struct ip6_moptions *); 854 int ip6_getmoptions(struct inpcb *, struct sockopt *); 855 int ip6_setmoptions(struct inpcb *, struct sockopt *); 856 857 /* flags to in6_update_ifa */ 858 #define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 859 860 int in6_mask2len(struct in6_addr *, u_char *); 861 int in6_control(struct socket *, u_long, void *, struct ifnet *, 862 struct thread *); 863 int in6_control_ioctl(u_long, void *, struct ifnet *, struct ucred *); 864 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 865 struct in6_ifaddr *, int); 866 void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *, 867 const struct in6_addr *); 868 int in6_addifaddr(struct ifnet *, struct in6_aliasreq *, struct in6_ifaddr *); 869 void in6_purgeaddr(struct ifaddr *); 870 void in6_purgeifaddr(struct in6_ifaddr *); 871 int in6if_do_dad(struct ifnet *); 872 void in6_savemkludge(struct in6_ifaddr *); 873 void *in6_domifattach(struct ifnet *); 874 void in6_domifdetach(struct ifnet *, void *); 875 int in6_domifmtu(struct ifnet *); 876 struct rib_head *in6_inithead(uint32_t fibnum); 877 void in6_detachhead(struct rib_head *rh); 878 void in6_setmaxmtu(void); 879 int in6_if2idlen(struct ifnet *); 880 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 881 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, const struct in6_addr *); 882 struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t, bool); 883 struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 884 int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 885 int in6_matchlen(struct in6_addr *, struct in6_addr *); 886 int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 887 void in6_prefixlen2mask(struct in6_addr *, int); 888 int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 889 struct ifnet *); 890 int in6_prefix_add_ifid(int, struct in6_ifaddr *); 891 void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 892 void in6_purgeprefix(struct ifnet *); 893 894 int in6_is_addr_deprecated(struct sockaddr_in6 *); 895 int in6_src_ioctl(u_long, caddr_t); 896 897 void in6_newaddrmsg(struct in6_ifaddr *, int); 898 899 void in6_purge_proxy_ndp(struct ifnet *); 900 /* 901 * Extended API for IPv6 FIB support. 902 */ 903 struct mbuf *ip6_tryforward(struct mbuf *); 904 #endif /* _KERNEL */ 905 906 #endif /* _NETINET6_IN6_VAR_H_ */ 907