in6_var.h revision 287731
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: stable/10/sys/netinet6/in6_var.h 287731 2015-09-13 01:39:37Z hrs $ 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 */ 89struct 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 96struct nd_ifinfo; 97struct scope6_id; 98struct lltable; 99struct mld_ifinfo; 100 101#ifdef _KERNEL 102#include <sys/counter.h> 103 104struct in6_ifextra { 105 counter_u64_t *in6_ifstat; 106 counter_u64_t *icmp6_ifstat; 107 struct nd_ifinfo *nd_ifinfo; 108 struct scope6_id *scope6_id; 109 struct lltable *lltable; 110 struct mld_ifinfo *mld_ifinfo; 111}; 112#else 113 114struct in6_ifextra { 115 void *in6_ifstat; 116 void *icmp6_ifstat; 117 struct nd_ifinfo *nd_ifinfo; 118 struct scope6_id *scope6_id; 119 struct lltable *lltable; 120 struct mld_ifinfo *mld_ifinfo; 121}; 122#endif /* !_KERNEL */ 123 124#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 125 126struct in6_ifaddr { 127 struct ifaddr ia_ifa; /* protocol-independent info */ 128#define ia_ifp ia_ifa.ifa_ifp 129#define ia_flags ia_ifa.ifa_flags 130 struct sockaddr_in6 ia_addr; /* interface address */ 131 struct sockaddr_in6 ia_net; /* network number of interface */ 132 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 133 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 134 u_int32_t ia_plen; /* prefix length */ 135 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 136 int ia6_flags; 137 138 struct in6_addrlifetime ia6_lifetime; 139 time_t ia6_createtime; /* the creation time of this address, which is 140 * currently used for temporary addresses only. 141 */ 142 time_t ia6_updatetime; 143 144 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 145 struct nd_prefix *ia6_ndpr; 146 147 /* multicast addresses joined from the kernel */ 148 LIST_HEAD(, in6_multi_mship) ia6_memberships; 149 /* entry in bucket of inet6 addresses */ 150 LIST_ENTRY(in6_ifaddr) ia6_hash; 151}; 152 153/* List of in6_ifaddr's. */ 154TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 155LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 156 157/* control structure to manage address selection policy */ 158struct in6_addrpolicy { 159 struct sockaddr_in6 addr; /* prefix address */ 160 struct sockaddr_in6 addrmask; /* prefix mask */ 161 int preced; /* precedence */ 162 int label; /* matching label */ 163 u_quad_t use; /* statistics */ 164}; 165 166/* 167 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 168 */ 169struct in6_ifstat { 170 uint64_t ifs6_in_receive; /* # of total input datagram */ 171 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 172 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 173 uint64_t ifs6_in_noroute; /* # of datagrams with no route */ 174 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 175 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 176 /* NOTE: increment on final dst if */ 177 uint64_t ifs6_in_truncated; /* # of truncated datagrams */ 178 uint64_t ifs6_in_discard; /* # of discarded datagrams */ 179 /* NOTE: fragment timeout is not here */ 180 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 181 /* NOTE: increment on final dst if */ 182 uint64_t ifs6_out_forward; /* # of datagrams forwarded */ 183 /* NOTE: increment on outgoing if */ 184 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 185 /* NOTE: does not include forwrads */ 186 uint64_t ifs6_out_discard; /* # of discarded datagrams */ 187 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */ 188 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 189 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 190 /* NOTE: this is # after fragment */ 191 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 192 /* NOTE: increment on final dst if */ 193 uint64_t ifs6_reass_ok; /* # of reassembled packets */ 194 /* NOTE: this is # after reass */ 195 /* NOTE: increment on final dst if */ 196 uint64_t ifs6_reass_fail; /* # of reass failures */ 197 /* NOTE: may not be packet count */ 198 /* NOTE: increment on final dst if */ 199 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 200 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 201}; 202 203/* 204 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 205 * XXX: I'm not sure if this file is the right place for this structure... 206 */ 207struct icmp6_ifstat { 208 /* 209 * Input statistics 210 */ 211 /* ipv6IfIcmpInMsgs, total # of input messages */ 212 uint64_t ifs6_in_msg; 213 /* ipv6IfIcmpInErrors, # of input error messages */ 214 uint64_t ifs6_in_error; 215 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 216 uint64_t ifs6_in_dstunreach; 217 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 218 uint64_t ifs6_in_adminprohib; 219 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 220 uint64_t ifs6_in_timeexceed; 221 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 222 uint64_t ifs6_in_paramprob; 223 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 224 uint64_t ifs6_in_pkttoobig; 225 /* ipv6IfIcmpInEchos, # of input echo requests */ 226 uint64_t ifs6_in_echo; 227 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 228 uint64_t ifs6_in_echoreply; 229 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 230 uint64_t ifs6_in_routersolicit; 231 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 232 uint64_t ifs6_in_routeradvert; 233 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 234 uint64_t ifs6_in_neighborsolicit; 235 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 236 uint64_t ifs6_in_neighboradvert; 237 /* ipv6IfIcmpInRedirects, # of input redirects */ 238 uint64_t ifs6_in_redirect; 239 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 240 uint64_t ifs6_in_mldquery; 241 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 242 uint64_t ifs6_in_mldreport; 243 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 244 uint64_t ifs6_in_mlddone; 245 246 /* 247 * Output statistics. We should solve unresolved routing problem... 248 */ 249 /* ipv6IfIcmpOutMsgs, total # of output messages */ 250 uint64_t ifs6_out_msg; 251 /* ipv6IfIcmpOutErrors, # of output error messages */ 252 uint64_t ifs6_out_error; 253 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 254 uint64_t ifs6_out_dstunreach; 255 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 256 uint64_t ifs6_out_adminprohib; 257 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 258 uint64_t ifs6_out_timeexceed; 259 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 260 uint64_t ifs6_out_paramprob; 261 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 262 uint64_t ifs6_out_pkttoobig; 263 /* ipv6IfIcmpOutEchos, # of output echo requests */ 264 uint64_t ifs6_out_echo; 265 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 266 uint64_t ifs6_out_echoreply; 267 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 268 uint64_t ifs6_out_routersolicit; 269 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 270 uint64_t ifs6_out_routeradvert; 271 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 272 uint64_t ifs6_out_neighborsolicit; 273 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 274 uint64_t ifs6_out_neighboradvert; 275 /* ipv6IfIcmpOutRedirects, # of output redirects */ 276 uint64_t ifs6_out_redirect; 277 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 278 uint64_t ifs6_out_mldquery; 279 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 280 uint64_t ifs6_out_mldreport; 281 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 282 uint64_t ifs6_out_mlddone; 283}; 284 285struct in6_ifreq { 286 char ifr_name[IFNAMSIZ]; 287 union { 288 struct sockaddr_in6 ifru_addr; 289 struct sockaddr_in6 ifru_dstaddr; 290 int ifru_flags; 291 int ifru_flags6; 292 int ifru_metric; 293 caddr_t ifru_data; 294 struct in6_addrlifetime ifru_lifetime; 295 struct in6_ifstat ifru_stat; 296 struct icmp6_ifstat ifru_icmp6stat; 297 u_int32_t ifru_scope_id[16]; 298 } ifr_ifru; 299}; 300 301struct in6_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 int ifra_vhid; 309}; 310 311/* pre-10.x compat */ 312struct oin6_aliasreq { 313 char ifra_name[IFNAMSIZ]; 314 struct sockaddr_in6 ifra_addr; 315 struct sockaddr_in6 ifra_dstaddr; 316 struct sockaddr_in6 ifra_prefixmask; 317 int ifra_flags; 318 struct in6_addrlifetime ifra_lifetime; 319}; 320 321/* prefix type macro */ 322#define IN6_PREFIX_ND 1 323#define IN6_PREFIX_RR 2 324 325/* 326 * prefix related flags passed between kernel(NDP related part) and 327 * user land command(ifconfig) and daemon(rtadvd). 328 */ 329struct in6_prflags { 330 struct prf_ra { 331 u_char onlink : 1; 332 u_char autonomous : 1; 333 u_char reserved : 6; 334 } prf_ra; 335 u_char prf_reserved1; 336 u_short prf_reserved2; 337 /* want to put this on 4byte offset */ 338 struct prf_rr { 339 u_char decrvalid : 1; 340 u_char decrprefd : 1; 341 u_char reserved : 6; 342 } prf_rr; 343 u_char prf_reserved3; 344 u_short prf_reserved4; 345}; 346 347struct in6_prefixreq { 348 char ipr_name[IFNAMSIZ]; 349 u_char ipr_origin; 350 u_char ipr_plen; 351 u_int32_t ipr_vltime; 352 u_int32_t ipr_pltime; 353 struct in6_prflags ipr_flags; 354 struct sockaddr_in6 ipr_prefix; 355}; 356 357#define PR_ORIG_RA 0 358#define PR_ORIG_RR 1 359#define PR_ORIG_STATIC 2 360#define PR_ORIG_KERNEL 3 361 362#define ipr_raf_onlink ipr_flags.prf_ra.onlink 363#define ipr_raf_auto ipr_flags.prf_ra.autonomous 364 365#define ipr_statef_onlink ipr_flags.prf_state.onlink 366 367#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 368#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 369 370struct in6_rrenumreq { 371 char irr_name[IFNAMSIZ]; 372 u_char irr_origin; 373 u_char irr_m_len; /* match len for matchprefix */ 374 u_char irr_m_minlen; /* minlen for matching prefix */ 375 u_char irr_m_maxlen; /* maxlen for matching prefix */ 376 u_char irr_u_uselen; /* uselen for adding prefix */ 377 u_char irr_u_keeplen; /* keeplen from matching prefix */ 378 struct irr_raflagmask { 379 u_char onlink : 1; 380 u_char autonomous : 1; 381 u_char reserved : 6; 382 } irr_raflagmask; 383 u_int32_t irr_vltime; 384 u_int32_t irr_pltime; 385 struct in6_prflags irr_flags; 386 struct sockaddr_in6 irr_matchprefix; 387 struct sockaddr_in6 irr_useprefix; 388}; 389 390#define irr_raf_mask_onlink irr_raflagmask.onlink 391#define irr_raf_mask_auto irr_raflagmask.autonomous 392#define irr_raf_mask_reserved irr_raflagmask.reserved 393 394#define irr_raf_onlink irr_flags.prf_ra.onlink 395#define irr_raf_auto irr_flags.prf_ra.autonomous 396 397#define irr_statef_onlink irr_flags.prf_state.onlink 398 399#define irr_rrf irr_flags.prf_rr 400#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 401#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 402 403/* 404 * Given a pointer to an in6_ifaddr (ifaddr), 405 * return a pointer to the addr as a sockaddr_in6 406 */ 407#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 408#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 409#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 410#define IA6_SIN6(ia) (&((ia)->ia_addr)) 411#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 412#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 413#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 414 415#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 416 417#ifdef _KERNEL 418#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 419 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 420 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 421 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 422 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 423#endif 424 425#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 426#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 427 428#ifdef _KERNEL 429/* 430 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 431 * we do not shift numbers for binary compatibility. 432 */ 433#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 434#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 435#endif 436 437#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 438#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 439 440#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 441#define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 442#define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 443 444#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 445#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 446#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 447 448#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 449 450#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 451#ifdef _KERNEL 452/* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 453#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 454#endif 455#ifdef _KERNEL 456#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 457#endif 458#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 459#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 460#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 461#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 462#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 463#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 464 465#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 466#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 467#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 468#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 469 470#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 471#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 472 473#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 474 475#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 476#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 477#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 478 479#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 480#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 481#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 482#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 483#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 484 struct in6_rrenumreq) /* change */ 485#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 486 struct in6_rrenumreq) /* set global */ 487 488#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 489 struct sioc_sg_req6) /* get s,g pkt cnt */ 490#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 491 struct sioc_mif_req6) /* get pkt cnt per if */ 492 493#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 494#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 495 496#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 497#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 498#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 499#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 500#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 501#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 502 * (used only at first SIOC* call) 503 */ 504#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 505#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 506#define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */ 507 508/* do not input/output */ 509#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 510 511#ifdef _KERNEL 512#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 513#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 514#endif 515 516#ifdef _KERNEL 517VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 518VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 519VNET_DECLARE(u_long, in6_ifaddrhmask); 520#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 521#define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 522#define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 523 524#define IN6ADDR_NHASH_LOG2 8 525#define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 526#define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 527#define IN6ADDR_HASH(x) \ 528 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 529 530static __inline uint32_t 531in6_addrhash(struct in6_addr *in6) 532{ 533 uint32_t x; 534 535 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 536 in6->s6_addr32[3]; 537 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 538} 539 540extern struct rwlock in6_ifaddr_lock; 541#define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 542#define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 543#define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 544#define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 545#define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 546#define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 547#define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 548 549#define in6_ifstat_inc(ifp, tag) \ 550do { \ 551 if (ifp) \ 552 counter_u64_add(((struct in6_ifextra *) \ 553 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \ 554 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\ 555} while (/*CONSTCOND*/ 0) 556 557extern u_char inet6ctlerrmap[]; 558VNET_DECLARE(unsigned long, in6_maxmtu); 559#define V_in6_maxmtu VNET(in6_maxmtu) 560#endif /* _KERNEL */ 561 562/* 563 * IPv6 multicast MLD-layer source entry. 564 */ 565struct ip6_msource { 566 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 567 struct in6_addr im6s_addr; 568 struct im6s_st { 569 uint16_t ex; /* # of exclusive members */ 570 uint16_t in; /* # of inclusive members */ 571 } im6s_st[2]; /* state at t0, t1 */ 572 uint8_t im6s_stp; /* pending query */ 573}; 574RB_HEAD(ip6_msource_tree, ip6_msource); 575 576/* 577 * IPv6 multicast PCB-layer source entry. 578 * 579 * NOTE: overlapping use of struct ip6_msource fields at start. 580 */ 581struct in6_msource { 582 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 583 struct in6_addr im6s_addr; /* Common field */ 584 uint8_t im6sl_st[2]; /* state before/at commit */ 585}; 586 587#ifdef _KERNEL 588/* 589 * IPv6 source tree comparison function. 590 * 591 * An ordered predicate is necessary; bcmp() is not documented to return 592 * an indication of order, memcmp() is, and is an ISO C99 requirement. 593 */ 594static __inline int 595ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 596{ 597 598 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 599} 600RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 601#endif /* _KERNEL */ 602 603/* 604 * IPv6 multicast PCB-layer group filter descriptor. 605 */ 606struct in6_mfilter { 607 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 608 u_long im6f_nsrc; /* # of source entries */ 609 uint8_t im6f_st[2]; /* state before/at commit */ 610}; 611 612/* 613 * Legacy KAME IPv6 multicast membership descriptor. 614 */ 615struct in6_multi_mship { 616 struct in6_multi *i6mm_maddr; 617 LIST_ENTRY(in6_multi_mship) i6mm_chain; 618}; 619 620/* 621 * IPv6 group descriptor. 622 * 623 * For every entry on an ifnet's if_multiaddrs list which represents 624 * an IP multicast group, there is one of these structures. 625 * 626 * If any source filters are present, then a node will exist in the RB-tree 627 * to permit fast lookup by source whenever an operation takes place. 628 * This permits pre-order traversal when we issue reports. 629 * Source filter trees are kept separately from the socket layer to 630 * greatly simplify locking. 631 * 632 * When MLDv2 is active, in6m_timer is the response to group query timer. 633 * The state-change timer in6m_sctimer is separate; whenever state changes 634 * for the group the state change record is generated and transmitted, 635 * and kept if retransmissions are necessary. 636 * 637 * FUTURE: in6m_link is now only used when groups are being purged 638 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 639 * because it is at the very start of the struct, we can't do this 640 * w/o breaking the ABI for ifmcstat. 641 */ 642struct in6_multi { 643 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 644 struct in6_addr in6m_addr; /* IPv6 multicast address */ 645 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 646 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 647 u_int in6m_refcount; /* reference count */ 648 u_int in6m_state; /* state of the membership */ 649 u_int in6m_timer; /* MLD6 listener report timer */ 650 651 /* New fields for MLDv2 follow. */ 652 struct mld_ifinfo *in6m_mli; /* MLD info */ 653 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 654 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 655 u_long in6m_nsrc; /* # of tree entries */ 656 657 struct ifqueue in6m_scq; /* queue of pending 658 * state-change packets */ 659 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 660 uint16_t in6m_sctimer; /* state-change timer */ 661 uint16_t in6m_scrv; /* state-change rexmit count */ 662 663 /* 664 * SSM state counters which track state at T0 (the time the last 665 * state-change report's RV timer went to zero) and T1 666 * (time of pending report, i.e. now). 667 * Used for computing MLDv2 state-change reports. Several refcounts 668 * are maintained here to optimize for common use-cases. 669 */ 670 struct in6m_st { 671 uint16_t iss_fmode; /* MLD filter mode */ 672 uint16_t iss_asm; /* # of ASM listeners */ 673 uint16_t iss_ex; /* # of exclusive members */ 674 uint16_t iss_in; /* # of inclusive members */ 675 uint16_t iss_rec; /* # of recorded sources */ 676 } in6m_st[2]; /* state at t0, t1 */ 677}; 678 679/* 680 * Helper function to derive the filter mode on a source entry 681 * from its internal counters. Predicates are: 682 * A source is only excluded if all listeners exclude it. 683 * A source is only included if no listeners exclude it, 684 * and at least one listener includes it. 685 * May be used by ifmcstat(8). 686 */ 687static __inline uint8_t 688im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 689 uint8_t t) 690{ 691 692 t = !!t; 693 if (inm->in6m_st[t].iss_ex > 0 && 694 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 695 return (MCAST_EXCLUDE); 696 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 697 return (MCAST_INCLUDE); 698 return (MCAST_UNDEFINED); 699} 700 701#ifdef _KERNEL 702 703/* 704 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 705 * before link layer multicast locks in the lock order. In most cases, 706 * consumers of IN_*_MULTI() macros should acquire the locks before 707 * calling them; users of the in_{add,del}multi() functions should not. 708 */ 709extern struct mtx in6_multi_mtx; 710#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 711#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 712#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 713#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 714 715/* 716 * Look up an in6_multi record for an IPv6 multicast address 717 * on the interface ifp. 718 * If no record found, return NULL. 719 * 720 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 721 */ 722static __inline struct in6_multi * 723in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 724{ 725 struct ifmultiaddr *ifma; 726 struct in6_multi *inm; 727 728 IN6_MULTI_LOCK_ASSERT(); 729 IF_ADDR_LOCK_ASSERT(ifp); 730 731 inm = NULL; 732 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 733 if (ifma->ifma_addr->sa_family == AF_INET6) { 734 inm = (struct in6_multi *)ifma->ifma_protospec; 735 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 736 break; 737 inm = NULL; 738 } 739 } 740 return (inm); 741} 742 743/* 744 * Wrapper for in6m_lookup_locked(). 745 * 746 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 747 */ 748static __inline struct in6_multi * 749in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 750{ 751 struct in6_multi *inm; 752 753 IN6_MULTI_LOCK(); 754 IF_ADDR_RLOCK(ifp); 755 inm = in6m_lookup_locked(ifp, mcaddr); 756 IF_ADDR_RUNLOCK(ifp); 757 IN6_MULTI_UNLOCK(); 758 759 return (inm); 760} 761 762/* Acquire an in6_multi record. */ 763static __inline void 764in6m_acquire_locked(struct in6_multi *inm) 765{ 766 767 IN6_MULTI_LOCK_ASSERT(); 768 ++inm->in6m_refcount; 769} 770 771struct ip6_moptions; 772struct sockopt; 773 774/* Multicast KPIs. */ 775int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 776 const struct sockaddr *, const struct sockaddr *); 777int in6_mc_join(struct ifnet *, const struct in6_addr *, 778 struct in6_mfilter *, struct in6_multi **, int); 779int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 780 struct in6_mfilter *, struct in6_multi **, int); 781int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 782int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 783void in6m_clear_recorded(struct in6_multi *); 784void in6m_commit(struct in6_multi *); 785void in6m_print(const struct in6_multi *); 786int in6m_record_source(struct in6_multi *, const struct in6_addr *); 787void in6m_release_locked(struct in6_multi *); 788void ip6_freemoptions(struct ip6_moptions *); 789int ip6_getmoptions(struct inpcb *, struct sockopt *); 790int ip6_setmoptions(struct inpcb *, struct sockopt *); 791 792/* Legacy KAME multicast KPIs. */ 793struct in6_multi_mship * 794 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 795int in6_leavegroup(struct in6_multi_mship *); 796 797/* flags to in6_update_ifa */ 798#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 799 800int in6_mask2len(struct in6_addr *, u_char *); 801int in6_control(struct socket *, u_long, caddr_t, struct ifnet *, 802 struct thread *); 803int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 804 struct in6_ifaddr *, int); 805void in6_purgeaddr(struct ifaddr *); 806int in6if_do_dad(struct ifnet *); 807void in6_purgeif(struct ifnet *); 808void in6_savemkludge(struct in6_ifaddr *); 809void *in6_domifattach(struct ifnet *); 810void in6_domifdetach(struct ifnet *, void *); 811void in6_setmaxmtu(void); 812int in6_if2idlen(struct ifnet *); 813struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 814struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *); 815struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 816char *ip6_sprintf(char *, const struct in6_addr *); 817int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 818int in6_matchlen(struct in6_addr *, struct in6_addr *); 819int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 820void in6_prefixlen2mask(struct in6_addr *, int); 821int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 822 struct ifnet *); 823int in6_prefix_add_ifid(int, struct in6_ifaddr *); 824void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 825void in6_purgeprefix(struct ifnet *); 826void in6_ifremloop(struct ifaddr *); 827void in6_ifaddloop(struct ifaddr *); 828 829int in6_is_addr_deprecated(struct sockaddr_in6 *); 830int in6_src_ioctl(u_long, caddr_t); 831 832/* 833 * Extended API for IPv6 FIB support. 834 */ 835void in6_rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 836 int, struct sockaddr *, u_int); 837int in6_rtrequest(int, struct sockaddr *, struct sockaddr *, 838 struct sockaddr *, int, struct rtentry **, u_int); 839void in6_rtalloc(struct route_in6 *, u_int); 840void in6_rtalloc_ign(struct route_in6 *, u_long, u_int); 841struct rtentry *in6_rtalloc1(struct sockaddr *, int, u_long, u_int); 842#endif /* _KERNEL */ 843 844#endif /* _NETINET6_IN6_VAR_H_ */ 845