in6_var.h revision 60833
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 30/* 31 * Copyright (c) 1985, 1986, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. 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 * @(#)in_var.h 8.1 (Berkeley) 6/10/93 63 * $FreeBSD: head/sys/netinet6/in6_var.h 60833 2000-05-23 20:41:01Z jake $ 64 */ 65 66#ifndef _NETINET6_IN6_VAR_H_ 67#define _NETINET6_IN6_VAR_H_ 68 69/* 70 * Interface address, Internet version. One of these structures 71 * is allocated for each interface with an Internet address. 72 * The ifaddr structure contains the protocol-independent part 73 * of the structure and is assumed to be first. 74 */ 75 76/* 77 * pltime/vltime are just for future reference (required to implements 2 78 * hour rule for hosts). they should never be modified by nd6_timeout or 79 * anywhere else. 80 * userland -> kernel: accept pltime/vltime 81 * kernel -> userland: throuw up everything 82 * in kernel: modify preferred/expire only 83 */ 84struct in6_addrlifetime { 85 time_t ia6t_expire; /* valid lifetime expiration time */ 86 time_t ia6t_preferred; /* preferred lifetime expiration time */ 87 u_int32_t ia6t_vltime; /* valid lifetime */ 88 u_int32_t ia6t_pltime; /* prefix lifetime */ 89}; 90 91struct in6_ifaddr { 92 struct ifaddr ia_ifa; /* protocol-independent info */ 93#define ia_ifp ia_ifa.ifa_ifp 94#define ia_flags ia_ifa.ifa_flags 95 struct sockaddr_in6 ia_addr; /* interface address */ 96 struct sockaddr_in6 ia_net; /* network number of interface */ 97 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 98 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 99 u_int32_t ia_plen; /* prefix length */ 100 struct in6_ifaddr *ia_next; /* next in6 list of IP6 addresses */ 101 int ia6_flags; 102 103 struct in6_addrlifetime ia6_lifetime; /* NULL = infty */ 104 struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */ 105}; 106 107/* 108 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 109 */ 110struct in6_ifstat { 111 u_int64_t ifs6_in_receive; /* # of total input datagram */ 112 u_int64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 113 u_int64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 114 u_int64_t ifs6_in_noroute; /* # of datagrams with no route */ 115 u_int64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 116 u_int64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 117 /* NOTE: increment on final dst if */ 118 u_int64_t ifs6_in_truncated; /* # of truncated datagrams */ 119 u_int64_t ifs6_in_discard; /* # of discarded datagrams */ 120 /* NOTE: fragment timeout is not here */ 121 u_int64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 122 /* NOTE: increment on final dst if */ 123 u_int64_t ifs6_out_forward; /* # of datagrams forwarded */ 124 /* NOTE: increment on outgoing if */ 125 u_int64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 126 /* NOTE: does not include forwrads */ 127 u_int64_t ifs6_out_discard; /* # of discarded datagrams */ 128 u_int64_t ifs6_out_fragok; /* # of datagrams fragmented */ 129 u_int64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 130 u_int64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 131 /* NOTE: this is # after fragment */ 132 u_int64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 133 /* NOTE: increment on final dst if */ 134 u_int64_t ifs6_reass_ok; /* # of reassembled packets */ 135 /* NOTE: this is # after reass */ 136 /* NOTE: increment on final dst if */ 137 u_int64_t ifs6_reass_fail; /* # of reass failures */ 138 /* NOTE: may not be packet count */ 139 /* NOTE: increment on final dst if */ 140 u_int64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 141 u_int64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 142}; 143 144/* 145 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 146 * XXX: I'm not sure if this file is the right place for this structure... 147 */ 148struct icmp6_ifstat { 149 /* 150 * Input statistics 151 */ 152 /* ipv6IfIcmpInMsgs, total # of input messages */ 153 u_int64_t ifs6_in_msg; 154 /* ipv6IfIcmpInErrors, # of input error messages */ 155 u_int64_t ifs6_in_error; 156 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 157 u_int64_t ifs6_in_dstunreach; 158 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 159 u_int64_t ifs6_in_adminprohib; 160 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 161 u_int64_t ifs6_in_timeexceed; 162 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 163 u_int64_t ifs6_in_paramprob; 164 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 165 u_int64_t ifs6_in_pkttoobig; 166 /* ipv6IfIcmpInEchos, # of input echo requests */ 167 u_int64_t ifs6_in_echo; 168 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 169 u_int64_t ifs6_in_echoreply; 170 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 171 u_int64_t ifs6_in_routersolicit; 172 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 173 u_int64_t ifs6_in_routeradvert; 174 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 175 u_int64_t ifs6_in_neighborsolicit; 176 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 177 u_int64_t ifs6_in_neighboradvert; 178 /* ipv6IfIcmpInRedirects, # of input redirects */ 179 u_int64_t ifs6_in_redirect; 180 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 181 u_int64_t ifs6_in_mldquery; 182 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 183 u_int64_t ifs6_in_mldreport; 184 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 185 u_int64_t ifs6_in_mlddone; 186 187 /* 188 * Output statistics. We should solve unresolved routing problem... 189 */ 190 /* ipv6IfIcmpOutMsgs, total # of output messages */ 191 u_int64_t ifs6_out_msg; 192 /* ipv6IfIcmpOutErrors, # of output error messages */ 193 u_int64_t ifs6_out_error; 194 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 195 u_int64_t ifs6_out_dstunreach; 196 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 197 u_int64_t ifs6_out_adminprohib; 198 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 199 u_int64_t ifs6_out_timeexceed; 200 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 201 u_int64_t ifs6_out_paramprob; 202 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 203 u_int64_t ifs6_out_pkttoobig; 204 /* ipv6IfIcmpOutEchos, # of output echo requests */ 205 u_int64_t ifs6_out_echo; 206 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 207 u_int64_t ifs6_out_echoreply; 208 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 209 u_int64_t ifs6_out_routersolicit; 210 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 211 u_int64_t ifs6_out_routeradvert; 212 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 213 u_int64_t ifs6_out_neighborsolicit; 214 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 215 u_int64_t ifs6_out_neighboradvert; 216 /* ipv6IfIcmpOutRedirects, # of output redirects */ 217 u_int64_t ifs6_out_redirect; 218 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 219 u_int64_t ifs6_out_mldquery; 220 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 221 u_int64_t ifs6_out_mldreport; 222 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 223 u_int64_t ifs6_out_mlddone; 224}; 225 226struct in6_ifreq { 227 char ifr_name[IFNAMSIZ]; 228 union { 229 struct sockaddr_in6 ifru_addr; 230 struct sockaddr_in6 ifru_dstaddr; 231 short ifru_flags; 232 int ifru_flags6; 233 int ifru_metric; 234 caddr_t ifru_data; 235 struct in6_addrlifetime ifru_lifetime; 236 struct in6_ifstat ifru_stat; 237 struct icmp6_ifstat ifru_icmp6stat; 238 } ifr_ifru; 239}; 240 241struct in6_aliasreq { 242 char ifra_name[IFNAMSIZ]; 243 struct sockaddr_in6 ifra_addr; 244 struct sockaddr_in6 ifra_dstaddr; 245 struct sockaddr_in6 ifra_prefixmask; 246 int ifra_flags; 247 struct in6_addrlifetime ifra_lifetime; 248}; 249 250/* prefix type macro */ 251#define IN6_PREFIX_ND 1 252#define IN6_PREFIX_RR 2 253 254/* 255 * prefix related flags passed between kernel(NDP related part) and 256 * user land command(ifconfig) and daemon(rtadvd). 257 */ 258struct in6_prflags { 259 struct prf_ra { 260 u_char onlink : 1; 261 u_char autonomous : 1; 262 u_char reserved : 6; 263 } prf_ra; 264 u_char prf_reserved1; 265 u_short prf_reserved2; 266 /* want to put this on 4byte offset */ 267 struct prf_rr { 268 u_char decrvalid : 1; 269 u_char decrprefd : 1; 270 u_char reserved : 6; 271 } prf_rr; 272 u_char prf_reserved3; 273 u_short prf_reserved4; 274}; 275 276struct in6_prefixreq { 277 char ipr_name[IFNAMSIZ]; 278 u_char ipr_origin; 279 u_char ipr_plen; 280 u_int32_t ipr_vltime; 281 u_int32_t ipr_pltime; 282 struct in6_prflags ipr_flags; 283 struct sockaddr_in6 ipr_prefix; 284}; 285 286#define PR_ORIG_RA 0 287#define PR_ORIG_RR 1 288#define PR_ORIG_STATIC 2 289#define PR_ORIG_KERNEL 3 290 291#define ipr_raf_onlink ipr_flags.prf_ra.onlink 292#define ipr_raf_auto ipr_flags.prf_ra.autonomous 293 294#define ipr_statef_onlink ipr_flags.prf_state.onlink 295 296#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 297#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 298 299struct in6_rrenumreq { 300 char irr_name[IFNAMSIZ]; 301 u_char irr_origin; 302 u_char irr_m_len; /* match len for matchprefix */ 303 u_char irr_m_minlen; /* minlen for matching prefix */ 304 u_char irr_m_maxlen; /* maxlen for matching prefix */ 305 u_char irr_u_uselen; /* uselen for adding prefix */ 306 u_char irr_u_keeplen; /* keeplen from matching prefix */ 307 struct irr_raflagmask { 308 u_char onlink : 1; 309 u_char autonomous : 1; 310 u_char reserved : 6; 311 } irr_raflagmask; 312 u_int32_t irr_vltime; 313 u_int32_t irr_pltime; 314 struct in6_prflags irr_flags; 315 struct sockaddr_in6 irr_matchprefix; 316 struct sockaddr_in6 irr_useprefix; 317}; 318 319#define irr_raf_mask_onlink irr_raflagmask.onlink 320#define irr_raf_mask_auto irr_raflagmask.autonomous 321#define irr_raf_mask_reserved irr_raflagmask.reserved 322 323#define irr_raf_onlink irr_flags.prf_ra.onlink 324#define irr_raf_auto irr_flags.prf_ra.autonomous 325 326#define irr_statef_onlink irr_flags.prf_state.onlink 327 328#define irr_rrf irr_flags.prf_rr 329#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 330#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 331 332/* 333 * Given a pointer to an in6_ifaddr (ifaddr), 334 * return a pointer to the addr as a sockaddr_in6 335 */ 336#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 337#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 338#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 339#define IA6_SIN6(ia) (&((ia)->ia_addr)) 340#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 341#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 342#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 343 344#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 345 346#ifdef _KERNEL 347#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 348 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 349 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 350 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 351 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 352#endif 353 354#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 355#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 356#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 357#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 358#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 359#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 360 361#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 362#define SIOCAIFADDR_IN6 _IOW('i', 26, struct in6_aliasreq) 363 364#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 365#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 366#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 367 368#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 369 370#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 371#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_prlist) 372#define SIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ndireq) 373#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 374#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 375#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 376#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 377 378#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 379#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 380#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 381#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 382 383#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 384#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 385#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 386#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 387#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 388 struct in6_rrenumreq) /* change */ 389#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 390 struct in6_rrenumreq) /* set global */ 391 392#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 393 struct sioc_sg_req6) /* get s,g pkt cnt */ 394#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 395 struct sioc_mif_req6) /* get pkt cnt per if */ 396 397#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 398#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 399#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 400#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 401#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 402 403/* do not input/output */ 404#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 405 406#ifdef _KERNEL 407extern struct in6_ifaddr *in6_ifaddr; 408 409extern struct in6_ifstat **in6_ifstat; 410extern size_t in6_ifstatmax; 411extern struct icmp6stat icmp6stat; 412extern struct icmp6_ifstat **icmp6_ifstat; 413extern size_t icmp6_ifstatmax; 414#define in6_ifstat_inc(ifp, tag) \ 415do { \ 416 if ((ifp) && (ifp)->if_index <= if_index \ 417 && (ifp)->if_index < in6_ifstatmax \ 418 && in6_ifstat && in6_ifstat[(ifp)->if_index]) { \ 419 in6_ifstat[(ifp)->if_index]->tag++; \ 420 } \ 421} while (0) 422 423extern struct ifqueue ip6intrq; /* IP6 packet input queue */ 424extern struct in6_addr zeroin6_addr; 425extern u_char inet6ctlerrmap[]; 426extern u_long in6_maxmtu; 427#ifdef MALLOC_DECLARE 428MALLOC_DECLARE(M_IPMADDR); 429#endif /* MALLOC_DECLARE */ 430 431/* 432 * Macro for finding the internet address structure (in6_ifaddr) corresponding 433 * to a given interface (ifnet structure). 434 */ 435#define IFP_TO_IA6(ifp, ia) \ 436/* struct ifnet *ifp; */ \ 437/* struct in6_ifaddr *ia; */ \ 438do { \ 439 struct ifaddr *ifa; \ 440 TAILQ_FOREACH(ifa, &(ifp)->if_addrlist, ifa_list) { \ 441 if (!ifa->ifa_addr) \ 442 continue; \ 443 if (ifa->ifa_addr->sa_family == AF_INET6) \ 444 break; \ 445 } \ 446 (ia) = (struct in6_ifaddr *)ifa; \ 447} while (0) 448#endif /* _KERNEL */ 449 450/* 451 * Multi-cast membership entry. One for each group/ifp that a PCB 452 * belongs to. 453 */ 454struct in6_multi_mship { 455 struct in6_multi *i6mm_maddr; /* Multicast address pointer */ 456 LIST_ENTRY(struct in6_multi_mship) i6mm_chain; /* multicast options chain */ 457}; 458 459struct in6_multi { 460 LIST_ENTRY(struct in6_multi) in6m_entry; /* list glue */ 461 struct in6_addr in6m_addr; /* IP6 multicast address */ 462 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 463 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 464 u_int in6m_refcount; /* # membership claims by sockets */ 465 u_int in6m_state; /* state of the membership */ 466 u_int in6m_timer; /* MLD6 listener report timer */ 467}; 468 469#ifdef _KERNEL 470 471#ifdef SYSCTL_DECL 472SYSCTL_DECL(_net_inet6_ip6); 473#endif 474 475extern LIST_HEAD(in6_multihead, struct in6_multi) in6_multihead; 476 477/* 478 * Structure used by macros below to remember position when stepping through 479 * all of eht in6_multi records. 480 */ 481struct in6_multistep { 482 struct in6_ifaddr *i_ia; 483 struct in6_multi *i_in6m; 484}; 485 486/* 487 * Macros for looking up the in6_multi record for a given IP6 multicast 488 * address on a given interface. If no matching record is found, "in6m" 489 * returns NLL. 490 */ 491 492#define IN6_LOOKUP_MULTI(addr, ifp, in6m) \ 493/* struct in6_addr addr; */ \ 494/* struct ifnet *ifp; */ \ 495/* struct in6_multi *in6m; */ \ 496do { \ 497 register struct ifmultiaddr *ifma; \ 498 for (ifma = (ifp)->if_multiaddrs.lh_first; ifma; \ 499 ifma = ifma->ifma_link.le_next) { \ 500 if (ifma->ifma_addr->sa_family == AF_INET6 \ 501 && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \ 502 &(addr))) \ 503 break; \ 504 } \ 505 (in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \ 506} while(0) 507 508/* 509 * Macro to step through all of the in6_multi records, one at a time. 510 * The current position is remembered in "step", which the caller must 511 * provide. IN6_FIRST_MULTI(), below, must be called to initialize "step" 512 * and get the first record. Both macros return a NULL "in6m" when there 513 * are no remaining records. 514 */ 515#define IN6_NEXT_MULTI(step, in6m) \ 516/* struct in6_multistep step; */ \ 517/* struct in6_multi *in6m; */ \ 518do { \ 519 if (((in6m) = (step).i_in6m) != NULL) \ 520 (step).i_in6m = LIST_NEXT((step).i_in6m, in6m_entry); \ 521} while(0) 522 523#define IN6_FIRST_MULTI(step, in6m) \ 524/* struct in6_multistep step; */ \ 525/* struct in6_multi *in6m */ \ 526do { \ 527 (step).i_in6m = LIST_FIRST(&in6_multihead); \ 528 IN6_NEXT_MULTI((step), (in6m)); \ 529} while(0) 530 531int in6_ifinit __P((struct ifnet *, 532 struct in6_ifaddr *, struct sockaddr_in6 *, int)); 533struct in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *, 534 int *)); 535void in6_delmulti __P((struct in6_multi *)); 536void in6_ifscrub __P((struct ifnet *, struct in6_ifaddr *)); 537extern int in6_ifindex2scopeid __P((int)); 538extern int in6_mask2len __P((struct in6_addr *)); 539extern void in6_len2mask __P((struct in6_addr *, int)); 540int in6_control __P((struct socket *, 541 u_long, caddr_t, struct ifnet *, struct proc *)); 542void in6_savemkludge __P((struct in6_ifaddr *)); 543void in6_setmaxmtu __P((void)); 544void in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *)); 545struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *)); 546struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, 547 struct in6_addr *)); 548char *ip6_sprintf __P((struct in6_addr *)); 549int in6_matchlen __P((struct in6_addr *, struct in6_addr *)); 550int in6_are_prefix_equal __P((struct in6_addr *p1, struct in6_addr *p2, 551 int len)); 552void in6_prefixlen2mask __P((struct in6_addr *maskp, int len)); 553int in6_prefix_ioctl __P((struct socket *so, u_long cmd, caddr_t data, 554 struct ifnet *ifp)); 555int in6_prefix_add_ifid __P((int iilen, struct in6_ifaddr *ia)); 556void in6_prefix_remove_ifid __P((int iilen, struct in6_ifaddr *ia)); 557#endif /* _KERNEL */ 558 559#endif /* _NETINET6_IN6_VAR_H_ */ 560