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 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_ifinfo; 100 101 struct in6_ifextra { 102 struct in6_ifstat *in6_ifstat; 103 struct icmp6_ifstat *icmp6_ifstat; 104 struct nd_ifinfo *nd_ifinfo; 105 struct scope6_id *scope6_id; 106 struct lltable *lltable; 107 struct mld_ifinfo *mld_ifinfo; 108 }; 109 110 #define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 111 112 struct in6_ifaddr { 113 struct ifaddr ia_ifa; /* protocol-independent info */ 114 #define ia_ifp ia_ifa.ifa_ifp 115 #define ia_flags ia_ifa.ifa_flags 116 struct sockaddr_in6 ia_addr; /* interface address */ 117 struct sockaddr_in6 ia_net; /* network number of interface */ 118 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 119 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 120 u_int32_t ia_plen; /* prefix length */ 121 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 122 int ia6_flags; 123 124 struct in6_addrlifetime ia6_lifetime; 125 time_t ia6_createtime; /* the creation time of this address, which is 126 * currently used for temporary addresses only. 127 */ 128 time_t ia6_updatetime; 129 130 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 131 struct nd_prefix *ia6_ndpr; 132 133 /* multicast addresses joined from the kernel */ 134 LIST_HEAD(, in6_multi_mship) ia6_memberships; 135 /* entry in bucket of inet6 addresses */ 136 LIST_ENTRY(in6_ifaddr) ia6_hash; 137 }; 138 139 /* List of in6_ifaddr's. */ 140 TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 141 LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 142 143 /* control structure to manage address selection policy */ 144 struct in6_addrpolicy { 145 struct sockaddr_in6 addr; /* prefix address */ 146 struct sockaddr_in6 addrmask; /* prefix mask */ 147 int preced; /* precedence */ 148 int label; /* matching label */ 149 u_quad_t use; /* statistics */ 150 }; 151 152 /* 153 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 154 */ 155 struct in6_ifstat { 156 u_quad_t ifs6_in_receive; /* # of total input datagram */ 157 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 158 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 159 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */ 160 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 161 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 162 /* NOTE: increment on final dst if */ 163 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */ 164 u_quad_t ifs6_in_discard; /* # of discarded datagrams */ 165 /* NOTE: fragment timeout is not here */ 166 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 167 /* NOTE: increment on final dst if */ 168 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */ 169 /* NOTE: increment on outgoing if */ 170 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 171 /* NOTE: does not include forwrads */ 172 u_quad_t ifs6_out_discard; /* # of discarded datagrams */ 173 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */ 174 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 175 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */ 176 /* NOTE: this is # after fragment */ 177 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 178 /* NOTE: increment on final dst if */ 179 u_quad_t ifs6_reass_ok; /* # of reassembled packets */ 180 /* NOTE: this is # after reass */ 181 /* NOTE: increment on final dst if */ 182 u_quad_t ifs6_reass_fail; /* # of reass failures */ 183 /* NOTE: may not be packet count */ 184 /* NOTE: increment on final dst if */ 185 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 186 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 187 }; 188 189 /* 190 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 191 * XXX: I'm not sure if this file is the right place for this structure... 192 */ 193 struct icmp6_ifstat { 194 /* 195 * Input statistics 196 */ 197 /* ipv6IfIcmpInMsgs, total # of input messages */ 198 u_quad_t ifs6_in_msg; 199 /* ipv6IfIcmpInErrors, # of input error messages */ 200 u_quad_t ifs6_in_error; 201 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 202 u_quad_t ifs6_in_dstunreach; 203 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 204 u_quad_t ifs6_in_adminprohib; 205 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 206 u_quad_t ifs6_in_timeexceed; 207 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 208 u_quad_t ifs6_in_paramprob; 209 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 210 u_quad_t ifs6_in_pkttoobig; 211 /* ipv6IfIcmpInEchos, # of input echo requests */ 212 u_quad_t ifs6_in_echo; 213 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 214 u_quad_t ifs6_in_echoreply; 215 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 216 u_quad_t ifs6_in_routersolicit; 217 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 218 u_quad_t ifs6_in_routeradvert; 219 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 220 u_quad_t ifs6_in_neighborsolicit; 221 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 222 u_quad_t ifs6_in_neighboradvert; 223 /* ipv6IfIcmpInRedirects, # of input redirects */ 224 u_quad_t ifs6_in_redirect; 225 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 226 u_quad_t ifs6_in_mldquery; 227 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 228 u_quad_t ifs6_in_mldreport; 229 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 230 u_quad_t ifs6_in_mlddone; 231 232 /* 233 * Output statistics. We should solve unresolved routing problem... 234 */ 235 /* ipv6IfIcmpOutMsgs, total # of output messages */ 236 u_quad_t ifs6_out_msg; 237 /* ipv6IfIcmpOutErrors, # of output error messages */ 238 u_quad_t ifs6_out_error; 239 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 240 u_quad_t ifs6_out_dstunreach; 241 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 242 u_quad_t ifs6_out_adminprohib; 243 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 244 u_quad_t ifs6_out_timeexceed; 245 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 246 u_quad_t ifs6_out_paramprob; 247 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 248 u_quad_t ifs6_out_pkttoobig; 249 /* ipv6IfIcmpOutEchos, # of output echo requests */ 250 u_quad_t ifs6_out_echo; 251 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 252 u_quad_t ifs6_out_echoreply; 253 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 254 u_quad_t ifs6_out_routersolicit; 255 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 256 u_quad_t ifs6_out_routeradvert; 257 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 258 u_quad_t ifs6_out_neighborsolicit; 259 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 260 u_quad_t ifs6_out_neighboradvert; 261 /* ipv6IfIcmpOutRedirects, # of output redirects */ 262 u_quad_t ifs6_out_redirect; 263 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 264 u_quad_t ifs6_out_mldquery; 265 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 266 u_quad_t ifs6_out_mldreport; 267 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 268 u_quad_t ifs6_out_mlddone; 269 }; 270 271 struct in6_ifreq { 272 char ifr_name[IFNAMSIZ]; 273 union { 274 struct sockaddr_in6 ifru_addr; 275 struct sockaddr_in6 ifru_dstaddr; 276 int ifru_flags; 277 int ifru_flags6; 278 int ifru_metric; 279 caddr_t ifru_data; 280 struct in6_addrlifetime ifru_lifetime; 281 struct in6_ifstat ifru_stat; 282 struct icmp6_ifstat ifru_icmp6stat; 283 u_int32_t ifru_scope_id[16]; 284 } ifr_ifru; 285 }; 286 287 struct in6_aliasreq { 288 char ifra_name[IFNAMSIZ]; 289 struct sockaddr_in6 ifra_addr; 290 struct sockaddr_in6 ifra_dstaddr; 291 struct sockaddr_in6 ifra_prefixmask; 292 int ifra_flags; 293 struct in6_addrlifetime ifra_lifetime; 294 int ifra_vhid; 295 }; 296 297 /* pre-10.x compat */ 298 struct oin6_aliasreq { 299 char ifra_name[IFNAMSIZ]; 300 struct sockaddr_in6 ifra_addr; 301 struct sockaddr_in6 ifra_dstaddr; 302 struct sockaddr_in6 ifra_prefixmask; 303 int ifra_flags; 304 struct in6_addrlifetime ifra_lifetime; 305 }; 306 307 /* prefix type macro */ 308 #define IN6_PREFIX_ND 1 309 #define IN6_PREFIX_RR 2 310 311 /* 312 * prefix related flags passed between kernel(NDP related part) and 313 * user land command(ifconfig) and daemon(rtadvd). 314 */ 315 struct in6_prflags { 316 struct prf_ra { 317 u_char onlink : 1; 318 u_char autonomous : 1; 319 u_char reserved : 6; 320 } prf_ra; 321 u_char prf_reserved1; 322 u_short prf_reserved2; 323 /* want to put this on 4byte offset */ 324 struct prf_rr { 325 u_char decrvalid : 1; 326 u_char decrprefd : 1; 327 u_char reserved : 6; 328 } prf_rr; 329 u_char prf_reserved3; 330 u_short prf_reserved4; 331 }; 332 333 struct in6_prefixreq { 334 char ipr_name[IFNAMSIZ]; 335 u_char ipr_origin; 336 u_char ipr_plen; 337 u_int32_t ipr_vltime; 338 u_int32_t ipr_pltime; 339 struct in6_prflags ipr_flags; 340 struct sockaddr_in6 ipr_prefix; 341 }; 342 343 #define PR_ORIG_RA 0 344 #define PR_ORIG_RR 1 345 #define PR_ORIG_STATIC 2 346 #define PR_ORIG_KERNEL 3 347 348 #define ipr_raf_onlink ipr_flags.prf_ra.onlink 349 #define ipr_raf_auto ipr_flags.prf_ra.autonomous 350 351 #define ipr_statef_onlink ipr_flags.prf_state.onlink 352 353 #define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 354 #define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 355 356 struct in6_rrenumreq { 357 char irr_name[IFNAMSIZ]; 358 u_char irr_origin; 359 u_char irr_m_len; /* match len for matchprefix */ 360 u_char irr_m_minlen; /* minlen for matching prefix */ 361 u_char irr_m_maxlen; /* maxlen for matching prefix */ 362 u_char irr_u_uselen; /* uselen for adding prefix */ 363 u_char irr_u_keeplen; /* keeplen from matching prefix */ 364 struct irr_raflagmask { 365 u_char onlink : 1; 366 u_char autonomous : 1; 367 u_char reserved : 6; 368 } irr_raflagmask; 369 u_int32_t irr_vltime; 370 u_int32_t irr_pltime; 371 struct in6_prflags irr_flags; 372 struct sockaddr_in6 irr_matchprefix; 373 struct sockaddr_in6 irr_useprefix; 374 }; 375 376 #define irr_raf_mask_onlink irr_raflagmask.onlink 377 #define irr_raf_mask_auto irr_raflagmask.autonomous 378 #define irr_raf_mask_reserved irr_raflagmask.reserved 379 380 #define irr_raf_onlink irr_flags.prf_ra.onlink 381 #define irr_raf_auto irr_flags.prf_ra.autonomous 382 383 #define irr_statef_onlink irr_flags.prf_state.onlink 384 385 #define irr_rrf irr_flags.prf_rr 386 #define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 387 #define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 388 389 /* 390 * Given a pointer to an in6_ifaddr (ifaddr), 391 * return a pointer to the addr as a sockaddr_in6 392 */ 393 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 394 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 395 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 396 #define IA6_SIN6(ia) (&((ia)->ia_addr)) 397 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 398 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 399 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 400 401 #define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 402 403 #ifdef _KERNEL 404 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 405 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 406 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 407 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 408 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 409 #endif 410 411 #define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 412 #define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 413 414 #ifdef _KERNEL 415 /* 416 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 417 * we do not shift numbers for binary compatibility. 418 */ 419 #define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 420 #define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 421 #endif 422 423 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 424 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 425 426 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 427 #define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 428 #define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 429 430 #define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 431 #define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 432 #define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 433 434 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 435 436 #define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 437 #ifdef _KERNEL 438 /* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 439 #define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 440 #endif 441 #ifdef _KERNEL 442 #define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 443 #endif 444 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 445 #define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 446 #define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 447 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 448 #define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 449 #define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 450 451 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 452 #define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 453 #define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 454 #define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 455 456 #define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 457 #define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 458 459 #define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 460 461 #define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 462 #define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 463 #define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 464 465 #define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 466 #define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 467 #define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 468 #define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 469 #define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 470 struct in6_rrenumreq) /* change */ 471 #define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 472 struct in6_rrenumreq) /* set global */ 473 474 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 475 struct sioc_sg_req6) /* get s,g pkt cnt */ 476 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 477 struct sioc_mif_req6) /* get pkt cnt per if */ 478 479 #define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 480 #define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 481 482 #define IN6_IFF_ANYCAST 0x01 /* anycast address */ 483 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 484 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 485 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 486 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 487 #define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 488 * (used only at first SIOC* call) 489 */ 490 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 491 #define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 492 #define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 493 * XXX: this should be temporary. 494 */ 495 496 /* do not input/output */ 497 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 498 499 #ifdef _KERNEL 500 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 501 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 502 #endif 503 504 #ifdef _KERNEL 505 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 506 VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 507 VNET_DECLARE(u_long, in6_ifaddrhmask); 508 #define V_in6_ifaddrhead VNET(in6_ifaddrhead) 509 #define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 510 #define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 511 512 #define IN6ADDR_NHASH_LOG2 8 513 #define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 514 #define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 515 #define IN6ADDR_HASH(x) \ 516 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 517 518 static __inline uint32_t 519 in6_addrhash(struct in6_addr *in6) 520 { 521 uint32_t x; 522 523 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 524 in6->s6_addr32[3]; 525 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 526 } 527 528 extern struct rwlock in6_ifaddr_lock; 529 #define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 530 #define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 531 #define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 532 #define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 533 #define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 534 #define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 535 #define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 536 537 VNET_DECLARE(struct icmp6stat, icmp6stat); 538 #define V_icmp6stat VNET(icmp6stat) 539 #define in6_ifstat_inc(ifp, tag) \ 540 do { \ 541 if (ifp) \ 542 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \ 543 } while (/*CONSTCOND*/ 0) 544 545 extern struct in6_addr zeroin6_addr; 546 extern u_char inet6ctlerrmap[]; 547 VNET_DECLARE(unsigned long, in6_maxmtu); 548 #define V_in6_maxmtu VNET(in6_maxmtu) 549 #endif /* _KERNEL */ 550 551 /* 552 * IPv6 multicast MLD-layer source entry. 553 */ 554 struct ip6_msource { 555 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 556 struct in6_addr im6s_addr; 557 struct im6s_st { 558 uint16_t ex; /* # of exclusive members */ 559 uint16_t in; /* # of inclusive members */ 560 } im6s_st[2]; /* state at t0, t1 */ 561 uint8_t im6s_stp; /* pending query */ 562 }; 563 RB_HEAD(ip6_msource_tree, ip6_msource); 564 565 /* 566 * IPv6 multicast PCB-layer source entry. 567 * 568 * NOTE: overlapping use of struct ip6_msource fields at start. 569 */ 570 struct in6_msource { 571 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 572 struct in6_addr im6s_addr; /* Common field */ 573 uint8_t im6sl_st[2]; /* state before/at commit */ 574 }; 575 576 #ifdef _KERNEL 577 /* 578 * IPv6 source tree comparison function. 579 * 580 * An ordered predicate is necessary; bcmp() is not documented to return 581 * an indication of order, memcmp() is, and is an ISO C99 requirement. 582 */ 583 static __inline int 584 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 585 { 586 587 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 588 } 589 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 590 #endif /* _KERNEL */ 591 592 /* 593 * IPv6 multicast PCB-layer group filter descriptor. 594 */ 595 struct in6_mfilter { 596 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 597 u_long im6f_nsrc; /* # of source entries */ 598 uint8_t im6f_st[2]; /* state before/at commit */ 599 }; 600 601 /* 602 * Legacy KAME IPv6 multicast membership descriptor. 603 */ 604 struct in6_multi_mship { 605 struct in6_multi *i6mm_maddr; 606 LIST_ENTRY(in6_multi_mship) i6mm_chain; 607 }; 608 609 /* 610 * IPv6 group descriptor. 611 * 612 * For every entry on an ifnet's if_multiaddrs list which represents 613 * an IP multicast group, there is one of these structures. 614 * 615 * If any source filters are present, then a node will exist in the RB-tree 616 * to permit fast lookup by source whenever an operation takes place. 617 * This permits pre-order traversal when we issue reports. 618 * Source filter trees are kept separately from the socket layer to 619 * greatly simplify locking. 620 * 621 * When MLDv2 is active, in6m_timer is the response to group query timer. 622 * The state-change timer in6m_sctimer is separate; whenever state changes 623 * for the group the state change record is generated and transmitted, 624 * and kept if retransmissions are necessary. 625 * 626 * FUTURE: in6m_link is now only used when groups are being purged 627 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 628 * because it is at the very start of the struct, we can't do this 629 * w/o breaking the ABI for ifmcstat. 630 */ 631 struct in6_multi { 632 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 633 struct in6_addr in6m_addr; /* IPv6 multicast address */ 634 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 635 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 636 u_int in6m_refcount; /* reference count */ 637 u_int in6m_state; /* state of the membership */ 638 u_int in6m_timer; /* MLD6 listener report timer */ 639 640 /* New fields for MLDv2 follow. */ 641 struct mld_ifinfo *in6m_mli; /* MLD info */ 642 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 643 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 644 u_long in6m_nsrc; /* # of tree entries */ 645 646 struct ifqueue in6m_scq; /* queue of pending 647 * state-change packets */ 648 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 649 uint16_t in6m_sctimer; /* state-change timer */ 650 uint16_t in6m_scrv; /* state-change rexmit count */ 651 652 /* 653 * SSM state counters which track state at T0 (the time the last 654 * state-change report's RV timer went to zero) and T1 655 * (time of pending report, i.e. now). 656 * Used for computing MLDv2 state-change reports. Several refcounts 657 * are maintained here to optimize for common use-cases. 658 */ 659 struct in6m_st { 660 uint16_t iss_fmode; /* MLD filter mode */ 661 uint16_t iss_asm; /* # of ASM listeners */ 662 uint16_t iss_ex; /* # of exclusive members */ 663 uint16_t iss_in; /* # of inclusive members */ 664 uint16_t iss_rec; /* # of recorded sources */ 665 } in6m_st[2]; /* state at t0, t1 */ 666 }; 667 668 /* 669 * Helper function to derive the filter mode on a source entry 670 * from its internal counters. Predicates are: 671 * A source is only excluded if all listeners exclude it. 672 * A source is only included if no listeners exclude it, 673 * and at least one listener includes it. 674 * May be used by ifmcstat(8). 675 */ 676 static __inline uint8_t 677 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 678 uint8_t t) 679 { 680 681 t = !!t; 682 if (inm->in6m_st[t].iss_ex > 0 && 683 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 684 return (MCAST_EXCLUDE); 685 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 686 return (MCAST_INCLUDE); 687 return (MCAST_UNDEFINED); 688 } 689 690 #ifdef _KERNEL 691 692 /* 693 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 694 * before link layer multicast locks in the lock order. In most cases, 695 * consumers of IN_*_MULTI() macros should acquire the locks before 696 * calling them; users of the in_{add,del}multi() functions should not. 697 */ 698 extern struct mtx in6_multi_mtx; 699 #define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 700 #define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 701 #define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 702 #define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 703 704 /* 705 * Look up an in6_multi record for an IPv6 multicast address 706 * on the interface ifp. 707 * If no record found, return NULL. 708 * 709 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 710 */ 711 static __inline struct in6_multi * 712 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 713 { 714 struct ifmultiaddr *ifma; 715 struct in6_multi *inm; 716 717 IN6_MULTI_LOCK_ASSERT(); 718 IF_ADDR_LOCK_ASSERT(ifp); 719 720 inm = NULL; 721 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 722 if (ifma->ifma_addr->sa_family == AF_INET6) { 723 inm = (struct in6_multi *)ifma->ifma_protospec; 724 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 725 break; 726 inm = NULL; 727 } 728 } 729 return (inm); 730 } 731 732 /* 733 * Wrapper for in6m_lookup_locked(). 734 * 735 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 736 */ 737 static __inline struct in6_multi * 738 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 739 { 740 struct in6_multi *inm; 741 742 IN6_MULTI_LOCK(); 743 IF_ADDR_RLOCK(ifp); 744 inm = in6m_lookup_locked(ifp, mcaddr); 745 IF_ADDR_RUNLOCK(ifp); 746 IN6_MULTI_UNLOCK(); 747 748 return (inm); 749 } 750 751 /* Acquire an in6_multi record. */ 752 static __inline void 753 in6m_acquire_locked(struct in6_multi *inm) 754 { 755 756 IN6_MULTI_LOCK_ASSERT(); 757 ++inm->in6m_refcount; 758 } 759 760 struct ip6_moptions; 761 struct sockopt; 762 763 /* Multicast KPIs. */ 764 int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 765 const struct sockaddr *, const struct sockaddr *); 766 int in6_mc_join(struct ifnet *, const struct in6_addr *, 767 struct in6_mfilter *, struct in6_multi **, int); 768 int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 769 struct in6_mfilter *, struct in6_multi **, int); 770 int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 771 int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 772 void in6m_clear_recorded(struct in6_multi *); 773 void in6m_commit(struct in6_multi *); 774 void in6m_print(const struct in6_multi *); 775 int in6m_record_source(struct in6_multi *, const struct in6_addr *); 776 void in6m_release_locked(struct in6_multi *); 777 void ip6_freemoptions(struct ip6_moptions *); 778 int ip6_getmoptions(struct inpcb *, struct sockopt *); 779 int ip6_setmoptions(struct inpcb *, struct sockopt *); 780 781 /* Legacy KAME multicast KPIs. */ 782 struct in6_multi_mship * 783 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 784 int in6_leavegroup(struct in6_multi_mship *); 785 786 /* flags to in6_update_ifa */ 787 #define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 788 789 int in6_mask2len(struct in6_addr *, u_char *); 790 int in6_control(struct socket *, u_long, caddr_t, struct ifnet *, 791 struct thread *); 792 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 793 struct in6_ifaddr *, int); 794 void in6_purgeaddr(struct ifaddr *); 795 int in6if_do_dad(struct ifnet *); 796 void in6_purgeif(struct ifnet *); 797 void in6_savemkludge(struct in6_ifaddr *); 798 void *in6_domifattach(struct ifnet *); 799 void in6_domifdetach(struct ifnet *, void *); 800 void in6_setmaxmtu(void); 801 int in6_if2idlen(struct ifnet *); 802 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 803 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *); 804 char *ip6_sprintf(char *, const struct in6_addr *); 805 int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 806 int in6_matchlen(struct in6_addr *, struct in6_addr *); 807 int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 808 void in6_prefixlen2mask(struct in6_addr *, int); 809 int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 810 struct ifnet *); 811 int in6_prefix_add_ifid(int, struct in6_ifaddr *); 812 void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 813 void in6_purgeprefix(struct ifnet *); 814 void in6_ifremloop(struct ifaddr *); 815 void in6_ifaddloop(struct ifaddr *); 816 817 int in6_is_addr_deprecated(struct sockaddr_in6 *); 818 int in6_src_ioctl(u_long, caddr_t); 819 820 /* 821 * Extended API for IPv6 FIB support. 822 */ 823 void in6_rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 824 int, struct sockaddr *, u_int); 825 int in6_rtrequest(int, struct sockaddr *, struct sockaddr *, 826 struct sockaddr *, int, struct rtentry **, u_int); 827 void in6_rtalloc(struct route_in6 *, u_int); 828 void in6_rtalloc_ign(struct route_in6 *, u_long, u_int); 829 struct rtentry *in6_rtalloc1(struct sockaddr *, int, u_long, u_int); 830 #endif /* _KERNEL */ 831 832 #endif /* _NETINET6_IN6_VAR_H_ */ 833