in6_var.h revision 191672
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 191672 2009-04-29 19:19:13Z bms $ 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 struct in6_ifaddr *ia_next; /* next in6 list of IP6 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/* control structure to manage address selection policy */ 137struct in6_addrpolicy { 138 struct sockaddr_in6 addr; /* prefix address */ 139 struct sockaddr_in6 addrmask; /* prefix mask */ 140 int preced; /* precedence */ 141 int label; /* matching label */ 142 u_quad_t use; /* statistics */ 143}; 144 145/* 146 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 147 */ 148struct in6_ifstat { 149 u_quad_t ifs6_in_receive; /* # of total input datagram */ 150 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 151 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 152 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */ 153 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 154 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 155 /* NOTE: increment on final dst if */ 156 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */ 157 u_quad_t ifs6_in_discard; /* # of discarded datagrams */ 158 /* NOTE: fragment timeout is not here */ 159 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 160 /* NOTE: increment on final dst if */ 161 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */ 162 /* NOTE: increment on outgoing if */ 163 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 164 /* NOTE: does not include forwrads */ 165 u_quad_t ifs6_out_discard; /* # of discarded datagrams */ 166 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */ 167 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 168 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */ 169 /* NOTE: this is # after fragment */ 170 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 171 /* NOTE: increment on final dst if */ 172 u_quad_t ifs6_reass_ok; /* # of reassembled packets */ 173 /* NOTE: this is # after reass */ 174 /* NOTE: increment on final dst if */ 175 u_quad_t ifs6_reass_fail; /* # of reass failures */ 176 /* NOTE: may not be packet count */ 177 /* NOTE: increment on final dst if */ 178 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 179 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 180}; 181 182/* 183 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 184 * XXX: I'm not sure if this file is the right place for this structure... 185 */ 186struct icmp6_ifstat { 187 /* 188 * Input statistics 189 */ 190 /* ipv6IfIcmpInMsgs, total # of input messages */ 191 u_quad_t ifs6_in_msg; 192 /* ipv6IfIcmpInErrors, # of input error messages */ 193 u_quad_t ifs6_in_error; 194 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 195 u_quad_t ifs6_in_dstunreach; 196 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 197 u_quad_t ifs6_in_adminprohib; 198 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 199 u_quad_t ifs6_in_timeexceed; 200 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 201 u_quad_t ifs6_in_paramprob; 202 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 203 u_quad_t ifs6_in_pkttoobig; 204 /* ipv6IfIcmpInEchos, # of input echo requests */ 205 u_quad_t ifs6_in_echo; 206 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 207 u_quad_t ifs6_in_echoreply; 208 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 209 u_quad_t ifs6_in_routersolicit; 210 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 211 u_quad_t ifs6_in_routeradvert; 212 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 213 u_quad_t ifs6_in_neighborsolicit; 214 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 215 u_quad_t ifs6_in_neighboradvert; 216 /* ipv6IfIcmpInRedirects, # of input redirects */ 217 u_quad_t ifs6_in_redirect; 218 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 219 u_quad_t ifs6_in_mldquery; 220 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 221 u_quad_t ifs6_in_mldreport; 222 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 223 u_quad_t ifs6_in_mlddone; 224 225 /* 226 * Output statistics. We should solve unresolved routing problem... 227 */ 228 /* ipv6IfIcmpOutMsgs, total # of output messages */ 229 u_quad_t ifs6_out_msg; 230 /* ipv6IfIcmpOutErrors, # of output error messages */ 231 u_quad_t ifs6_out_error; 232 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 233 u_quad_t ifs6_out_dstunreach; 234 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 235 u_quad_t ifs6_out_adminprohib; 236 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 237 u_quad_t ifs6_out_timeexceed; 238 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 239 u_quad_t ifs6_out_paramprob; 240 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 241 u_quad_t ifs6_out_pkttoobig; 242 /* ipv6IfIcmpOutEchos, # of output echo requests */ 243 u_quad_t ifs6_out_echo; 244 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 245 u_quad_t ifs6_out_echoreply; 246 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 247 u_quad_t ifs6_out_routersolicit; 248 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 249 u_quad_t ifs6_out_routeradvert; 250 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 251 u_quad_t ifs6_out_neighborsolicit; 252 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 253 u_quad_t ifs6_out_neighboradvert; 254 /* ipv6IfIcmpOutRedirects, # of output redirects */ 255 u_quad_t ifs6_out_redirect; 256 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 257 u_quad_t ifs6_out_mldquery; 258 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 259 u_quad_t ifs6_out_mldreport; 260 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 261 u_quad_t ifs6_out_mlddone; 262}; 263 264struct in6_ifreq { 265 char ifr_name[IFNAMSIZ]; 266 union { 267 struct sockaddr_in6 ifru_addr; 268 struct sockaddr_in6 ifru_dstaddr; 269 int ifru_flags; 270 int ifru_flags6; 271 int ifru_metric; 272 caddr_t ifru_data; 273 struct in6_addrlifetime ifru_lifetime; 274 struct in6_ifstat ifru_stat; 275 struct icmp6_ifstat ifru_icmp6stat; 276 u_int32_t ifru_scope_id[16]; 277 } ifr_ifru; 278}; 279 280struct in6_aliasreq { 281 char ifra_name[IFNAMSIZ]; 282 struct sockaddr_in6 ifra_addr; 283 struct sockaddr_in6 ifra_dstaddr; 284 struct sockaddr_in6 ifra_prefixmask; 285 int ifra_flags; 286 struct in6_addrlifetime ifra_lifetime; 287}; 288 289/* prefix type macro */ 290#define IN6_PREFIX_ND 1 291#define IN6_PREFIX_RR 2 292 293/* 294 * prefix related flags passed between kernel(NDP related part) and 295 * user land command(ifconfig) and daemon(rtadvd). 296 */ 297struct in6_prflags { 298 struct prf_ra { 299 u_char onlink : 1; 300 u_char autonomous : 1; 301 u_char reserved : 6; 302 } prf_ra; 303 u_char prf_reserved1; 304 u_short prf_reserved2; 305 /* want to put this on 4byte offset */ 306 struct prf_rr { 307 u_char decrvalid : 1; 308 u_char decrprefd : 1; 309 u_char reserved : 6; 310 } prf_rr; 311 u_char prf_reserved3; 312 u_short prf_reserved4; 313}; 314 315struct in6_prefixreq { 316 char ipr_name[IFNAMSIZ]; 317 u_char ipr_origin; 318 u_char ipr_plen; 319 u_int32_t ipr_vltime; 320 u_int32_t ipr_pltime; 321 struct in6_prflags ipr_flags; 322 struct sockaddr_in6 ipr_prefix; 323}; 324 325#define PR_ORIG_RA 0 326#define PR_ORIG_RR 1 327#define PR_ORIG_STATIC 2 328#define PR_ORIG_KERNEL 3 329 330#define ipr_raf_onlink ipr_flags.prf_ra.onlink 331#define ipr_raf_auto ipr_flags.prf_ra.autonomous 332 333#define ipr_statef_onlink ipr_flags.prf_state.onlink 334 335#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 336#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 337 338struct in6_rrenumreq { 339 char irr_name[IFNAMSIZ]; 340 u_char irr_origin; 341 u_char irr_m_len; /* match len for matchprefix */ 342 u_char irr_m_minlen; /* minlen for matching prefix */ 343 u_char irr_m_maxlen; /* maxlen for matching prefix */ 344 u_char irr_u_uselen; /* uselen for adding prefix */ 345 u_char irr_u_keeplen; /* keeplen from matching prefix */ 346 struct irr_raflagmask { 347 u_char onlink : 1; 348 u_char autonomous : 1; 349 u_char reserved : 6; 350 } irr_raflagmask; 351 u_int32_t irr_vltime; 352 u_int32_t irr_pltime; 353 struct in6_prflags irr_flags; 354 struct sockaddr_in6 irr_matchprefix; 355 struct sockaddr_in6 irr_useprefix; 356}; 357 358#define irr_raf_mask_onlink irr_raflagmask.onlink 359#define irr_raf_mask_auto irr_raflagmask.autonomous 360#define irr_raf_mask_reserved irr_raflagmask.reserved 361 362#define irr_raf_onlink irr_flags.prf_ra.onlink 363#define irr_raf_auto irr_flags.prf_ra.autonomous 364 365#define irr_statef_onlink irr_flags.prf_state.onlink 366 367#define irr_rrf irr_flags.prf_rr 368#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 369#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 370 371/* 372 * Given a pointer to an in6_ifaddr (ifaddr), 373 * return a pointer to the addr as a sockaddr_in6 374 */ 375#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 376#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 377#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 378#define IA6_SIN6(ia) (&((ia)->ia_addr)) 379#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 380#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 381#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 382 383#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 384 385#ifdef _KERNEL 386#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 387 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 388 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 389 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 390 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 391#endif 392 393#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 394#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 395 396#ifdef _KERNEL 397/* 398 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 399 * we do not shift numbers for binary compatibility. 400 */ 401#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 402#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 403#endif 404 405#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 406#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 407 408#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 409#define SIOCAIFADDR_IN6 _IOW('i', 26, struct in6_aliasreq) 410 411#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 412#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 413#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 414 415#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 416 417#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 418#ifdef _KERNEL 419/* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 420#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 421#endif 422#ifdef _KERNEL 423#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 424#endif 425#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 426#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 427#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 428#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 429#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 430#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 431 432#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 433#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 434#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 435#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 436 437#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 438#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 439 440#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 441 442#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 443#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 444#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 445 446#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 447#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 448#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 449#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 450#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 451 struct in6_rrenumreq) /* change */ 452#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 453 struct in6_rrenumreq) /* set global */ 454 455#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 456 struct sioc_sg_req6) /* get s,g pkt cnt */ 457#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 458 struct sioc_mif_req6) /* get pkt cnt per if */ 459 460#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 461#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 462 463#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 464#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 465#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 466#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 467#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 468#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 469 * (used only at first SIOC* call) 470 */ 471#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 472#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 473#define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 474 * XXX: this should be temporary. 475 */ 476 477/* do not input/output */ 478#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 479 480#ifdef _KERNEL 481#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 482#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 483#endif 484 485#ifdef _KERNEL 486#ifdef VIMAGE_GLOBALS 487extern struct in6_ifaddr *in6_ifaddr; 488 489extern struct icmp6stat icmp6stat; 490 491extern unsigned long in6_maxmtu; 492#endif /* VIMAGE_GLOBALS */ 493#define in6_ifstat_inc(ifp, tag) \ 494do { \ 495 if (ifp) \ 496 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \ 497} while (/*CONSTCOND*/ 0) 498 499extern struct in6_addr zeroin6_addr; 500extern u_char inet6ctlerrmap[]; 501 502/* 503 * Macro for finding the internet address structure (in6_ifaddr) corresponding 504 * to a given interface (ifnet structure). 505 */ 506 507#define IFP_TO_IA6(ifp, ia) \ 508/* struct ifnet *ifp; */ \ 509/* struct in6_ifaddr *ia; */ \ 510do { \ 511 struct ifaddr *ifa; \ 512 IF_ADDR_LOCK_ASSERT(ifp); \ 513 TAILQ_FOREACH(ifa, &(ifp)->if_addrhead, ifa_link) { \ 514 if (ifa->ifa_addr->sa_family == AF_INET6) \ 515 break; \ 516 } \ 517 (ia) = (struct in6_ifaddr *)ifa; \ 518} while (/*CONSTCOND*/ 0) 519 520#endif /* _KERNEL */ 521 522/* 523 * IPv6 multicast MLD-layer source entry. 524 */ 525struct ip6_msource { 526 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 527 struct in6_addr im6s_addr; 528 struct im6s_st { 529 uint16_t ex; /* # of exclusive members */ 530 uint16_t in; /* # of inclusive members */ 531 } im6s_st[2]; /* state at t0, t1 */ 532 uint8_t im6s_stp; /* pending query */ 533}; 534RB_HEAD(ip6_msource_tree, ip6_msource); 535 536/* 537 * IPv6 multicast PCB-layer source entry. 538 * 539 * NOTE: overlapping use of struct ip6_msource fields at start. 540 */ 541struct in6_msource { 542 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 543 struct in6_addr im6s_addr; /* Common field */ 544 uint8_t im6sl_st[2]; /* state before/at commit */ 545}; 546 547#ifdef _KERNEL 548/* 549 * IPv6 source tree comparison function. 550 * 551 * An ordered predicate is necessary; bcmp() is not documented to return 552 * an indication of order, memcmp() is, and is an ISO C99 requirement. 553 */ 554static __inline int 555ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 556{ 557 558 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 559} 560RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 561#endif /* _KERNEL */ 562 563/* 564 * IPv6 multicast PCB-layer group filter descriptor. 565 */ 566struct in6_mfilter { 567 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 568 u_long im6f_nsrc; /* # of source entries */ 569 uint8_t im6f_st[2]; /* state before/at commit */ 570}; 571 572/* 573 * Legacy KAME IPv6 multicast membership descriptor. 574 */ 575struct in6_multi_mship { 576 struct in6_multi *i6mm_maddr; 577 LIST_ENTRY(in6_multi_mship) i6mm_chain; 578}; 579 580/* 581 * IPv6 group descriptor. 582 * 583 * For every entry on an ifnet's if_multiaddrs list which represents 584 * an IP multicast group, there is one of these structures. 585 * 586 * If any source filters are present, then a node will exist in the RB-tree 587 * to permit fast lookup by source whenever an operation takes place. 588 * This permits pre-order traversal when we issue reports. 589 * Source filter trees are kept separately from the socket layer to 590 * greatly simplify locking. 591 * 592 * When MLDv2 is active, in6m_timer is the response to group query timer. 593 * The state-change timer in6m_sctimer is separate; whenever state changes 594 * for the group the state change record is generated and transmitted, 595 * and kept if retransmissions are necessary. 596 * 597 * FUTURE: in6m_link is now only used when groups are being purged 598 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 599 * because it is at the very start of the struct, we can't do this 600 * w/o breaking the ABI for ifmcstat. 601 */ 602struct in6_multi { 603 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 604 struct in6_addr in6m_addr; /* IPv6 multicast address */ 605 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 606 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 607 u_int in6m_refcount; /* reference count */ 608 u_int in6m_state; /* state of the membership */ 609 u_int in6m_timer; /* MLD6 listener report timer */ 610 611 /* New fields for MLDv2 follow. */ 612 struct mld_ifinfo *in6m_mli; /* MLD info */ 613 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 614 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 615 u_long in6m_nsrc; /* # of tree entries */ 616 617 struct ifqueue in6m_scq; /* queue of pending 618 * state-change packets */ 619 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 620 uint16_t in6m_sctimer; /* state-change timer */ 621 uint16_t in6m_scrv; /* state-change rexmit count */ 622 623 /* 624 * SSM state counters which track state at T0 (the time the last 625 * state-change report's RV timer went to zero) and T1 626 * (time of pending report, i.e. now). 627 * Used for computing MLDv2 state-change reports. Several refcounts 628 * are maintained here to optimize for common use-cases. 629 */ 630 struct in6m_st { 631 uint16_t iss_fmode; /* MLD filter mode */ 632 uint16_t iss_asm; /* # of ASM listeners */ 633 uint16_t iss_ex; /* # of exclusive members */ 634 uint16_t iss_in; /* # of inclusive members */ 635 uint16_t iss_rec; /* # of recorded sources */ 636 } in6m_st[2]; /* state at t0, t1 */ 637}; 638 639/* 640 * Helper function to derive the filter mode on a source entry 641 * from its internal counters. Predicates are: 642 * A source is only excluded if all listeners exclude it. 643 * A source is only included if no listeners exclude it, 644 * and at least one listener includes it. 645 * May be used by ifmcstat(8). 646 */ 647static __inline uint8_t 648im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 649 uint8_t t) 650{ 651 652 t = !!t; 653 if (inm->in6m_st[t].iss_ex > 0 && 654 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 655 return (MCAST_EXCLUDE); 656 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 657 return (MCAST_INCLUDE); 658 return (MCAST_UNDEFINED); 659} 660 661#ifdef _KERNEL 662 663/* 664 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 665 * before link layer multicast locks in the lock order. In most cases, 666 * consumers of IN_*_MULTI() macros should acquire the locks before 667 * calling them; users of the in_{add,del}multi() functions should not. 668 */ 669extern struct mtx in6_multi_mtx; 670#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 671#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 672#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 673#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 674 675/* 676 * Look up an in6_multi record for an IPv6 multicast address 677 * on the interface ifp. 678 * If no record found, return NULL. 679 * 680 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 681 */ 682static __inline struct in6_multi * 683in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 684{ 685 struct ifmultiaddr *ifma; 686 struct in6_multi *inm; 687 688 IN6_MULTI_LOCK_ASSERT(); 689 IF_ADDR_LOCK_ASSERT(ifp); 690 691 inm = NULL; 692 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 693 if (ifma->ifma_addr->sa_family == AF_INET6) { 694 inm = (struct in6_multi *)ifma->ifma_protospec; 695 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 696 break; 697 inm = NULL; 698 } 699 } 700 return (inm); 701} 702 703/* 704 * Wrapper for in6m_lookup_locked(). 705 * 706 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 707 */ 708static __inline struct in6_multi * 709in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 710{ 711 struct in6_multi *inm; 712 713 IN6_MULTI_LOCK(); 714 IF_ADDR_LOCK(ifp); 715 inm = in6m_lookup_locked(ifp, mcaddr); 716 IF_ADDR_UNLOCK(ifp); 717 IN6_MULTI_UNLOCK(); 718 719 return (inm); 720} 721 722/* Acquire an in6_multi record. */ 723static __inline void 724in6m_acquire_locked(struct in6_multi *inm) 725{ 726 727 IN6_MULTI_LOCK_ASSERT(); 728 ++inm->in6m_refcount; 729} 730 731struct ip6_moptions; 732struct sockopt; 733 734/* Multicast KPIs. */ 735int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 736 const struct sockaddr *, const struct sockaddr *); 737int in6_mc_join(struct ifnet *, const struct in6_addr *, 738 struct in6_mfilter *, struct in6_multi **, int); 739int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 740 struct in6_mfilter *, struct in6_multi **, int); 741int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 742int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 743void in6m_clear_recorded(struct in6_multi *); 744void in6m_commit(struct in6_multi *); 745void in6m_print(const struct in6_multi *); 746int in6m_record_source(struct in6_multi *, const struct in6_addr *); 747void in6m_release_locked(struct in6_multi *); 748void ip6_freemoptions(struct ip6_moptions *); 749int ip6_getmoptions(struct inpcb *, struct sockopt *); 750int ip6_setmoptions(struct inpcb *, struct sockopt *); 751 752/* Legacy KAME multicast KPIs. */ 753struct in6_multi_mship * 754 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 755int in6_leavegroup(struct in6_multi_mship *); 756 757/* flags to in6_update_ifa */ 758#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 759 760int in6_mask2len __P((struct in6_addr *, u_char *)); 761int in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *, 762 struct thread *)); 763int in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *, 764 struct in6_ifaddr *, int)); 765void in6_purgeaddr __P((struct ifaddr *)); 766int in6if_do_dad __P((struct ifnet *)); 767void in6_purgeif __P((struct ifnet *)); 768void in6_savemkludge __P((struct in6_ifaddr *)); 769void *in6_domifattach __P((struct ifnet *)); 770void in6_domifdetach __P((struct ifnet *, void *)); 771void in6_setmaxmtu __P((void)); 772int in6_if2idlen __P((struct ifnet *)); 773struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int)); 774struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *)); 775char *ip6_sprintf __P((char *, const struct in6_addr *)); 776int in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *)); 777int in6_matchlen __P((struct in6_addr *, struct in6_addr *)); 778int in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int)); 779void in6_prefixlen2mask __P((struct in6_addr *, int)); 780int in6_prefix_ioctl __P((struct socket *, u_long, caddr_t, 781 struct ifnet *)); 782int in6_prefix_add_ifid __P((int, struct in6_ifaddr *)); 783void in6_prefix_remove_ifid __P((int, struct in6_ifaddr *)); 784void in6_purgeprefix __P((struct ifnet *)); 785void in6_ifremloop(struct ifaddr *); 786void in6_ifaddloop(struct ifaddr *); 787 788int in6_is_addr_deprecated __P((struct sockaddr_in6 *)); 789struct inpcb; 790int in6_src_ioctl __P((u_long, caddr_t)); 791#endif /* _KERNEL */ 792 793#endif /* _NETINET6_IN6_VAR_H_ */ 794