in6_var.h revision 228768
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: head/sys/netinet6/in6_var.h 228768 2011-12-21 12:39:08Z glebius $ 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/libkern.h> 71#endif 72 73/* 74 * Interface address, Internet version. One of these structures 75 * is allocated for each interface with an Internet address. 76 * The ifaddr structure contains the protocol-independent part 77 * of the structure and is assumed to be first. 78 */ 79 80/* 81 * pltime/vltime are just for future reference (required to implements 2 82 * hour rule for hosts). they should never be modified by nd6_timeout or 83 * anywhere else. 84 * userland -> kernel: accept pltime/vltime 85 * kernel -> userland: throw up everything 86 * in kernel: modify preferred/expire only 87 */ 88struct in6_addrlifetime { 89 time_t ia6t_expire; /* valid lifetime expiration time */ 90 time_t ia6t_preferred; /* preferred lifetime expiration time */ 91 u_int32_t ia6t_vltime; /* valid lifetime */ 92 u_int32_t ia6t_pltime; /* prefix lifetime */ 93}; 94 95struct nd_ifinfo; 96struct scope6_id; 97struct lltable; 98struct mld_ifinfo; 99 100struct in6_ifextra { 101 struct in6_ifstat *in6_ifstat; 102 struct icmp6_ifstat *icmp6_ifstat; 103 struct nd_ifinfo *nd_ifinfo; 104 struct scope6_id *scope6_id; 105 struct lltable *lltable; 106 struct mld_ifinfo *mld_ifinfo; 107}; 108 109#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 110 111struct in6_ifaddr { 112 struct ifaddr ia_ifa; /* protocol-independent info */ 113#define ia_ifp ia_ifa.ifa_ifp 114#define ia_flags ia_ifa.ifa_flags 115 struct sockaddr_in6 ia_addr; /* interface address */ 116 struct sockaddr_in6 ia_net; /* network number of interface */ 117 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 118 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 119 u_int32_t ia_plen; /* prefix length */ 120 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 121 int ia6_flags; 122 123 struct in6_addrlifetime ia6_lifetime; 124 time_t ia6_createtime; /* the creation time of this address, which is 125 * currently used for temporary addresses only. 126 */ 127 time_t ia6_updatetime; 128 129 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 130 struct nd_prefix *ia6_ndpr; 131 132 /* multicast addresses joined from the kernel */ 133 LIST_HEAD(, in6_multi_mship) ia6_memberships; 134}; 135 136/* List of in6_ifaddr's. */ 137TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 138 139/* control structure to manage address selection policy */ 140struct in6_addrpolicy { 141 struct sockaddr_in6 addr; /* prefix address */ 142 struct sockaddr_in6 addrmask; /* prefix mask */ 143 int preced; /* precedence */ 144 int label; /* matching label */ 145 u_quad_t use; /* statistics */ 146}; 147 148/* 149 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 150 */ 151struct in6_ifstat { 152 u_quad_t ifs6_in_receive; /* # of total input datagram */ 153 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 154 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 155 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */ 156 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 157 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 158 /* NOTE: increment on final dst if */ 159 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */ 160 u_quad_t ifs6_in_discard; /* # of discarded datagrams */ 161 /* NOTE: fragment timeout is not here */ 162 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 163 /* NOTE: increment on final dst if */ 164 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */ 165 /* NOTE: increment on outgoing if */ 166 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 167 /* NOTE: does not include forwrads */ 168 u_quad_t ifs6_out_discard; /* # of discarded datagrams */ 169 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */ 170 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 171 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */ 172 /* NOTE: this is # after fragment */ 173 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 174 /* NOTE: increment on final dst if */ 175 u_quad_t ifs6_reass_ok; /* # of reassembled packets */ 176 /* NOTE: this is # after reass */ 177 /* NOTE: increment on final dst if */ 178 u_quad_t ifs6_reass_fail; /* # of reass failures */ 179 /* NOTE: may not be packet count */ 180 /* NOTE: increment on final dst if */ 181 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 182 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 183}; 184 185/* 186 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 187 * XXX: I'm not sure if this file is the right place for this structure... 188 */ 189struct icmp6_ifstat { 190 /* 191 * Input statistics 192 */ 193 /* ipv6IfIcmpInMsgs, total # of input messages */ 194 u_quad_t ifs6_in_msg; 195 /* ipv6IfIcmpInErrors, # of input error messages */ 196 u_quad_t ifs6_in_error; 197 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 198 u_quad_t ifs6_in_dstunreach; 199 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 200 u_quad_t ifs6_in_adminprohib; 201 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 202 u_quad_t ifs6_in_timeexceed; 203 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 204 u_quad_t ifs6_in_paramprob; 205 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 206 u_quad_t ifs6_in_pkttoobig; 207 /* ipv6IfIcmpInEchos, # of input echo requests */ 208 u_quad_t ifs6_in_echo; 209 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 210 u_quad_t ifs6_in_echoreply; 211 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 212 u_quad_t ifs6_in_routersolicit; 213 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 214 u_quad_t ifs6_in_routeradvert; 215 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 216 u_quad_t ifs6_in_neighborsolicit; 217 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 218 u_quad_t ifs6_in_neighboradvert; 219 /* ipv6IfIcmpInRedirects, # of input redirects */ 220 u_quad_t ifs6_in_redirect; 221 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 222 u_quad_t ifs6_in_mldquery; 223 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 224 u_quad_t ifs6_in_mldreport; 225 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 226 u_quad_t ifs6_in_mlddone; 227 228 /* 229 * Output statistics. We should solve unresolved routing problem... 230 */ 231 /* ipv6IfIcmpOutMsgs, total # of output messages */ 232 u_quad_t ifs6_out_msg; 233 /* ipv6IfIcmpOutErrors, # of output error messages */ 234 u_quad_t ifs6_out_error; 235 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 236 u_quad_t ifs6_out_dstunreach; 237 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 238 u_quad_t ifs6_out_adminprohib; 239 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 240 u_quad_t ifs6_out_timeexceed; 241 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 242 u_quad_t ifs6_out_paramprob; 243 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 244 u_quad_t ifs6_out_pkttoobig; 245 /* ipv6IfIcmpOutEchos, # of output echo requests */ 246 u_quad_t ifs6_out_echo; 247 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 248 u_quad_t ifs6_out_echoreply; 249 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 250 u_quad_t ifs6_out_routersolicit; 251 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 252 u_quad_t ifs6_out_routeradvert; 253 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 254 u_quad_t ifs6_out_neighborsolicit; 255 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 256 u_quad_t ifs6_out_neighboradvert; 257 /* ipv6IfIcmpOutRedirects, # of output redirects */ 258 u_quad_t ifs6_out_redirect; 259 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 260 u_quad_t ifs6_out_mldquery; 261 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 262 u_quad_t ifs6_out_mldreport; 263 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 264 u_quad_t ifs6_out_mlddone; 265}; 266 267struct in6_ifreq { 268 char ifr_name[IFNAMSIZ]; 269 union { 270 struct sockaddr_in6 ifru_addr; 271 struct sockaddr_in6 ifru_dstaddr; 272 int ifru_flags; 273 int ifru_flags6; 274 int ifru_metric; 275 caddr_t ifru_data; 276 struct in6_addrlifetime ifru_lifetime; 277 struct in6_ifstat ifru_stat; 278 struct icmp6_ifstat ifru_icmp6stat; 279 u_int32_t ifru_scope_id[16]; 280 } ifr_ifru; 281}; 282 283struct in6_aliasreq { 284 char ifra_name[IFNAMSIZ]; 285 struct sockaddr_in6 ifra_addr; 286 struct sockaddr_in6 ifra_dstaddr; 287 struct sockaddr_in6 ifra_prefixmask; 288 int ifra_flags; 289 struct in6_addrlifetime ifra_lifetime; 290 int ifra_vhid; 291}; 292 293/* pre-10.x compat */ 294struct oin6_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}; 302 303/* prefix type macro */ 304#define IN6_PREFIX_ND 1 305#define IN6_PREFIX_RR 2 306 307/* 308 * prefix related flags passed between kernel(NDP related part) and 309 * user land command(ifconfig) and daemon(rtadvd). 310 */ 311struct in6_prflags { 312 struct prf_ra { 313 u_char onlink : 1; 314 u_char autonomous : 1; 315 u_char reserved : 6; 316 } prf_ra; 317 u_char prf_reserved1; 318 u_short prf_reserved2; 319 /* want to put this on 4byte offset */ 320 struct prf_rr { 321 u_char decrvalid : 1; 322 u_char decrprefd : 1; 323 u_char reserved : 6; 324 } prf_rr; 325 u_char prf_reserved3; 326 u_short prf_reserved4; 327}; 328 329struct in6_prefixreq { 330 char ipr_name[IFNAMSIZ]; 331 u_char ipr_origin; 332 u_char ipr_plen; 333 u_int32_t ipr_vltime; 334 u_int32_t ipr_pltime; 335 struct in6_prflags ipr_flags; 336 struct sockaddr_in6 ipr_prefix; 337}; 338 339#define PR_ORIG_RA 0 340#define PR_ORIG_RR 1 341#define PR_ORIG_STATIC 2 342#define PR_ORIG_KERNEL 3 343 344#define ipr_raf_onlink ipr_flags.prf_ra.onlink 345#define ipr_raf_auto ipr_flags.prf_ra.autonomous 346 347#define ipr_statef_onlink ipr_flags.prf_state.onlink 348 349#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 350#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 351 352struct in6_rrenumreq { 353 char irr_name[IFNAMSIZ]; 354 u_char irr_origin; 355 u_char irr_m_len; /* match len for matchprefix */ 356 u_char irr_m_minlen; /* minlen for matching prefix */ 357 u_char irr_m_maxlen; /* maxlen for matching prefix */ 358 u_char irr_u_uselen; /* uselen for adding prefix */ 359 u_char irr_u_keeplen; /* keeplen from matching prefix */ 360 struct irr_raflagmask { 361 u_char onlink : 1; 362 u_char autonomous : 1; 363 u_char reserved : 6; 364 } irr_raflagmask; 365 u_int32_t irr_vltime; 366 u_int32_t irr_pltime; 367 struct in6_prflags irr_flags; 368 struct sockaddr_in6 irr_matchprefix; 369 struct sockaddr_in6 irr_useprefix; 370}; 371 372#define irr_raf_mask_onlink irr_raflagmask.onlink 373#define irr_raf_mask_auto irr_raflagmask.autonomous 374#define irr_raf_mask_reserved irr_raflagmask.reserved 375 376#define irr_raf_onlink irr_flags.prf_ra.onlink 377#define irr_raf_auto irr_flags.prf_ra.autonomous 378 379#define irr_statef_onlink irr_flags.prf_state.onlink 380 381#define irr_rrf irr_flags.prf_rr 382#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 383#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 384 385/* 386 * Given a pointer to an in6_ifaddr (ifaddr), 387 * return a pointer to the addr as a sockaddr_in6 388 */ 389#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 390#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 391#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 392#define IA6_SIN6(ia) (&((ia)->ia_addr)) 393#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 394#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 395#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 396 397#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 398 399#ifdef _KERNEL 400#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 401 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 402 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 403 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 404 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 405#endif 406 407#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 408#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 409 410#ifdef _KERNEL 411/* 412 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 413 * we do not shift numbers for binary compatibility. 414 */ 415#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 416#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 417#endif 418 419#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 420#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 421 422#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 423#define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 424#define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 425 426#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 427#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 428#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 429 430#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 431 432#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 433#ifdef _KERNEL 434/* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 435#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 436#endif 437#ifdef _KERNEL 438#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 439#endif 440#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 441#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 442#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 443#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 444#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 445#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 446 447#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 448#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 449#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 450#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 451 452#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 453#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 454 455#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 456 457#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 458#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 459#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 460 461#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 462#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 463#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 464#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 465#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 466 struct in6_rrenumreq) /* change */ 467#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 468 struct in6_rrenumreq) /* set global */ 469 470#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 471 struct sioc_sg_req6) /* get s,g pkt cnt */ 472#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 473 struct sioc_mif_req6) /* get pkt cnt per if */ 474 475#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 476#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 477 478#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 479#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 480#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 481#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 482#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 483#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 484 * (used only at first SIOC* call) 485 */ 486#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 487#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 488#define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 489 * XXX: this should be temporary. 490 */ 491 492/* do not input/output */ 493#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 494 495#ifdef _KERNEL 496#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 497#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 498#endif 499 500#ifdef _KERNEL 501VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 502#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 503 504extern struct rwlock in6_ifaddr_lock; 505#define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 506#define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 507#define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 508#define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 509#define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 510#define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 511#define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 512 513VNET_DECLARE(struct icmp6stat, icmp6stat); 514#define V_icmp6stat VNET(icmp6stat) 515#define in6_ifstat_inc(ifp, tag) \ 516do { \ 517 if (ifp) \ 518 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \ 519} while (/*CONSTCOND*/ 0) 520 521extern struct in6_addr zeroin6_addr; 522extern u_char inet6ctlerrmap[]; 523VNET_DECLARE(unsigned long, in6_maxmtu); 524#define V_in6_maxmtu VNET(in6_maxmtu) 525#endif /* _KERNEL */ 526 527/* 528 * IPv6 multicast MLD-layer source entry. 529 */ 530struct ip6_msource { 531 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 532 struct in6_addr im6s_addr; 533 struct im6s_st { 534 uint16_t ex; /* # of exclusive members */ 535 uint16_t in; /* # of inclusive members */ 536 } im6s_st[2]; /* state at t0, t1 */ 537 uint8_t im6s_stp; /* pending query */ 538}; 539RB_HEAD(ip6_msource_tree, ip6_msource); 540 541/* 542 * IPv6 multicast PCB-layer source entry. 543 * 544 * NOTE: overlapping use of struct ip6_msource fields at start. 545 */ 546struct in6_msource { 547 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 548 struct in6_addr im6s_addr; /* Common field */ 549 uint8_t im6sl_st[2]; /* state before/at commit */ 550}; 551 552#ifdef _KERNEL 553/* 554 * IPv6 source tree comparison function. 555 * 556 * An ordered predicate is necessary; bcmp() is not documented to return 557 * an indication of order, memcmp() is, and is an ISO C99 requirement. 558 */ 559static __inline int 560ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 561{ 562 563 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 564} 565RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 566#endif /* _KERNEL */ 567 568/* 569 * IPv6 multicast PCB-layer group filter descriptor. 570 */ 571struct in6_mfilter { 572 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 573 u_long im6f_nsrc; /* # of source entries */ 574 uint8_t im6f_st[2]; /* state before/at commit */ 575}; 576 577/* 578 * Legacy KAME IPv6 multicast membership descriptor. 579 */ 580struct in6_multi_mship { 581 struct in6_multi *i6mm_maddr; 582 LIST_ENTRY(in6_multi_mship) i6mm_chain; 583}; 584 585/* 586 * IPv6 group descriptor. 587 * 588 * For every entry on an ifnet's if_multiaddrs list which represents 589 * an IP multicast group, there is one of these structures. 590 * 591 * If any source filters are present, then a node will exist in the RB-tree 592 * to permit fast lookup by source whenever an operation takes place. 593 * This permits pre-order traversal when we issue reports. 594 * Source filter trees are kept separately from the socket layer to 595 * greatly simplify locking. 596 * 597 * When MLDv2 is active, in6m_timer is the response to group query timer. 598 * The state-change timer in6m_sctimer is separate; whenever state changes 599 * for the group the state change record is generated and transmitted, 600 * and kept if retransmissions are necessary. 601 * 602 * FUTURE: in6m_link is now only used when groups are being purged 603 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 604 * because it is at the very start of the struct, we can't do this 605 * w/o breaking the ABI for ifmcstat. 606 */ 607struct in6_multi { 608 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 609 struct in6_addr in6m_addr; /* IPv6 multicast address */ 610 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 611 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 612 u_int in6m_refcount; /* reference count */ 613 u_int in6m_state; /* state of the membership */ 614 u_int in6m_timer; /* MLD6 listener report timer */ 615 616 /* New fields for MLDv2 follow. */ 617 struct mld_ifinfo *in6m_mli; /* MLD info */ 618 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 619 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 620 u_long in6m_nsrc; /* # of tree entries */ 621 622 struct ifqueue in6m_scq; /* queue of pending 623 * state-change packets */ 624 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 625 uint16_t in6m_sctimer; /* state-change timer */ 626 uint16_t in6m_scrv; /* state-change rexmit count */ 627 628 /* 629 * SSM state counters which track state at T0 (the time the last 630 * state-change report's RV timer went to zero) and T1 631 * (time of pending report, i.e. now). 632 * Used for computing MLDv2 state-change reports. Several refcounts 633 * are maintained here to optimize for common use-cases. 634 */ 635 struct in6m_st { 636 uint16_t iss_fmode; /* MLD filter mode */ 637 uint16_t iss_asm; /* # of ASM listeners */ 638 uint16_t iss_ex; /* # of exclusive members */ 639 uint16_t iss_in; /* # of inclusive members */ 640 uint16_t iss_rec; /* # of recorded sources */ 641 } in6m_st[2]; /* state at t0, t1 */ 642}; 643 644/* 645 * Helper function to derive the filter mode on a source entry 646 * from its internal counters. Predicates are: 647 * A source is only excluded if all listeners exclude it. 648 * A source is only included if no listeners exclude it, 649 * and at least one listener includes it. 650 * May be used by ifmcstat(8). 651 */ 652static __inline uint8_t 653im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 654 uint8_t t) 655{ 656 657 t = !!t; 658 if (inm->in6m_st[t].iss_ex > 0 && 659 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 660 return (MCAST_EXCLUDE); 661 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 662 return (MCAST_INCLUDE); 663 return (MCAST_UNDEFINED); 664} 665 666#ifdef _KERNEL 667 668/* 669 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 670 * before link layer multicast locks in the lock order. In most cases, 671 * consumers of IN_*_MULTI() macros should acquire the locks before 672 * calling them; users of the in_{add,del}multi() functions should not. 673 */ 674extern struct mtx in6_multi_mtx; 675#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 676#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 677#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 678#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 679 680/* 681 * Look up an in6_multi record for an IPv6 multicast address 682 * on the interface ifp. 683 * If no record found, return NULL. 684 * 685 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 686 */ 687static __inline struct in6_multi * 688in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 689{ 690 struct ifmultiaddr *ifma; 691 struct in6_multi *inm; 692 693 IN6_MULTI_LOCK_ASSERT(); 694 IF_ADDR_LOCK_ASSERT(ifp); 695 696 inm = NULL; 697 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 698 if (ifma->ifma_addr->sa_family == AF_INET6) { 699 inm = (struct in6_multi *)ifma->ifma_protospec; 700 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 701 break; 702 inm = NULL; 703 } 704 } 705 return (inm); 706} 707 708/* 709 * Wrapper for in6m_lookup_locked(). 710 * 711 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 712 */ 713static __inline struct in6_multi * 714in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 715{ 716 struct in6_multi *inm; 717 718 IN6_MULTI_LOCK(); 719 IF_ADDR_LOCK(ifp); 720 inm = in6m_lookup_locked(ifp, mcaddr); 721 IF_ADDR_UNLOCK(ifp); 722 IN6_MULTI_UNLOCK(); 723 724 return (inm); 725} 726 727/* Acquire an in6_multi record. */ 728static __inline void 729in6m_acquire_locked(struct in6_multi *inm) 730{ 731 732 IN6_MULTI_LOCK_ASSERT(); 733 ++inm->in6m_refcount; 734} 735 736struct ip6_moptions; 737struct sockopt; 738 739/* Multicast KPIs. */ 740int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 741 const struct sockaddr *, const struct sockaddr *); 742int in6_mc_join(struct ifnet *, const struct in6_addr *, 743 struct in6_mfilter *, struct in6_multi **, int); 744int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 745 struct in6_mfilter *, struct in6_multi **, int); 746int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 747int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 748void in6m_clear_recorded(struct in6_multi *); 749void in6m_commit(struct in6_multi *); 750void in6m_print(const struct in6_multi *); 751int in6m_record_source(struct in6_multi *, const struct in6_addr *); 752void in6m_release_locked(struct in6_multi *); 753void ip6_freemoptions(struct ip6_moptions *); 754int ip6_getmoptions(struct inpcb *, struct sockopt *); 755int ip6_setmoptions(struct inpcb *, struct sockopt *); 756 757/* Legacy KAME multicast KPIs. */ 758struct in6_multi_mship * 759 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 760int in6_leavegroup(struct in6_multi_mship *); 761 762/* flags to in6_update_ifa */ 763#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 764 765int in6_mask2len __P((struct in6_addr *, u_char *)); 766int in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *, 767 struct thread *)); 768int in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *, 769 struct in6_ifaddr *, int)); 770void in6_purgeaddr __P((struct ifaddr *)); 771int in6if_do_dad __P((struct ifnet *)); 772void in6_purgeif __P((struct ifnet *)); 773void in6_savemkludge __P((struct in6_ifaddr *)); 774void *in6_domifattach __P((struct ifnet *)); 775void in6_domifdetach __P((struct ifnet *, void *)); 776void in6_setmaxmtu __P((void)); 777int in6_if2idlen __P((struct ifnet *)); 778struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int)); 779struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *)); 780char *ip6_sprintf __P((char *, const struct in6_addr *)); 781int in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *)); 782int in6_matchlen __P((struct in6_addr *, struct in6_addr *)); 783int in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int)); 784void in6_prefixlen2mask __P((struct in6_addr *, int)); 785int in6_prefix_ioctl __P((struct socket *, u_long, caddr_t, 786 struct ifnet *)); 787int in6_prefix_add_ifid __P((int, struct in6_ifaddr *)); 788void in6_prefix_remove_ifid __P((int, struct in6_ifaddr *)); 789void in6_purgeprefix __P((struct ifnet *)); 790void in6_ifremloop(struct ifaddr *); 791void in6_ifaddloop(struct ifaddr *); 792 793int in6_is_addr_deprecated __P((struct sockaddr_in6 *)); 794struct inpcb; 795int in6_src_ioctl __P((u_long, caddr_t)); 796#endif /* _KERNEL */ 797 798#endif /* _NETINET6_IN6_VAR_H_ */ 799