in6_var.h revision 311681
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/11/sys/netinet6/in6_var.h 311681 2017-01-08 13:31:24Z ae $ 62 */ 63 64#ifndef _NETINET6_IN6_VAR_H_ 65#define _NETINET6_IN6_VAR_H_ 66 67#include <sys/tree.h> 68#include <sys/counter.h> 69 70#ifdef _KERNEL 71#include <sys/fnv_hash.h> 72#include <sys/libkern.h> 73#endif 74 75/* 76 * Interface address, Internet version. One of these structures 77 * is allocated for each interface with an Internet address. 78 * The ifaddr structure contains the protocol-independent part 79 * of the structure and is assumed to be first. 80 */ 81 82/* 83 * pltime/vltime are just for future reference (required to implements 2 84 * hour rule for hosts). they should never be modified by nd6_timeout or 85 * anywhere else. 86 * userland -> kernel: accept pltime/vltime 87 * kernel -> userland: throw up everything 88 * in kernel: modify preferred/expire only 89 */ 90struct in6_addrlifetime { 91 time_t ia6t_expire; /* valid lifetime expiration time */ 92 time_t ia6t_preferred; /* preferred lifetime expiration time */ 93 u_int32_t ia6t_vltime; /* valid lifetime */ 94 u_int32_t ia6t_pltime; /* prefix lifetime */ 95}; 96 97struct nd_ifinfo; 98struct scope6_id; 99struct lltable; 100struct mld_ifsoftc; 101 102struct in6_ifextra { 103 counter_u64_t *in6_ifstat; 104 counter_u64_t *icmp6_ifstat; 105 struct nd_ifinfo *nd_ifinfo; 106 struct scope6_id *scope6_id; 107 struct lltable *lltable; 108 struct mld_ifsoftc *mld_ifinfo; 109}; 110 111#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 112 113#ifdef _KERNEL 114struct in6_ifaddr { 115 struct ifaddr ia_ifa; /* protocol-independent info */ 116#define ia_ifp ia_ifa.ifa_ifp 117#define ia_flags ia_ifa.ifa_flags 118 struct sockaddr_in6 ia_addr; /* interface address */ 119 struct sockaddr_in6 ia_net; /* network number of interface */ 120 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 121 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 122 u_int32_t ia_plen; /* prefix length */ 123 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 124 int ia6_flags; 125 126 struct in6_addrlifetime ia6_lifetime; 127 time_t ia6_createtime; /* the creation time of this address, which is 128 * currently used for temporary addresses only. 129 */ 130 time_t ia6_updatetime; 131 132 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 133 struct nd_prefix *ia6_ndpr; 134 135 /* multicast addresses joined from the kernel */ 136 LIST_HEAD(, in6_multi_mship) ia6_memberships; 137 /* entry in bucket of inet6 addresses */ 138 LIST_ENTRY(in6_ifaddr) ia6_hash; 139}; 140 141/* List of in6_ifaddr's. */ 142TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 143LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 144#endif /* _KERNEL */ 145 146/* control structure to manage address selection policy */ 147struct in6_addrpolicy { 148 struct sockaddr_in6 addr; /* prefix address */ 149 struct sockaddr_in6 addrmask; /* prefix mask */ 150 int preced; /* precedence */ 151 int label; /* matching label */ 152 u_quad_t use; /* statistics */ 153}; 154 155/* 156 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 157 */ 158struct in6_ifstat { 159 uint64_t ifs6_in_receive; /* # of total input datagram */ 160 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 161 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 162 uint64_t ifs6_in_noroute; /* # of datagrams with no route */ 163 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 164 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 165 /* NOTE: increment on final dst if */ 166 uint64_t ifs6_in_truncated; /* # of truncated datagrams */ 167 uint64_t ifs6_in_discard; /* # of discarded datagrams */ 168 /* NOTE: fragment timeout is not here */ 169 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 170 /* NOTE: increment on final dst if */ 171 uint64_t ifs6_out_forward; /* # of datagrams forwarded */ 172 /* NOTE: increment on outgoing if */ 173 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 174 /* NOTE: does not include forwrads */ 175 uint64_t ifs6_out_discard; /* # of discarded datagrams */ 176 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */ 177 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 178 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 179 /* NOTE: this is # after fragment */ 180 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 181 /* NOTE: increment on final dst if */ 182 uint64_t ifs6_reass_ok; /* # of reassembled packets */ 183 /* NOTE: this is # after reass */ 184 /* NOTE: increment on final dst if */ 185 uint64_t ifs6_reass_fail; /* # of reass failures */ 186 /* NOTE: may not be packet count */ 187 /* NOTE: increment on final dst if */ 188 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 189 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 190}; 191 192/* 193 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 194 * XXX: I'm not sure if this file is the right place for this structure... 195 */ 196struct icmp6_ifstat { 197 /* 198 * Input statistics 199 */ 200 /* ipv6IfIcmpInMsgs, total # of input messages */ 201 uint64_t ifs6_in_msg; 202 /* ipv6IfIcmpInErrors, # of input error messages */ 203 uint64_t ifs6_in_error; 204 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 205 uint64_t ifs6_in_dstunreach; 206 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 207 uint64_t ifs6_in_adminprohib; 208 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 209 uint64_t ifs6_in_timeexceed; 210 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 211 uint64_t ifs6_in_paramprob; 212 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 213 uint64_t ifs6_in_pkttoobig; 214 /* ipv6IfIcmpInEchos, # of input echo requests */ 215 uint64_t ifs6_in_echo; 216 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 217 uint64_t ifs6_in_echoreply; 218 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 219 uint64_t ifs6_in_routersolicit; 220 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 221 uint64_t ifs6_in_routeradvert; 222 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 223 uint64_t ifs6_in_neighborsolicit; 224 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 225 uint64_t ifs6_in_neighboradvert; 226 /* ipv6IfIcmpInRedirects, # of input redirects */ 227 uint64_t ifs6_in_redirect; 228 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 229 uint64_t ifs6_in_mldquery; 230 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 231 uint64_t ifs6_in_mldreport; 232 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 233 uint64_t ifs6_in_mlddone; 234 235 /* 236 * Output statistics. We should solve unresolved routing problem... 237 */ 238 /* ipv6IfIcmpOutMsgs, total # of output messages */ 239 uint64_t ifs6_out_msg; 240 /* ipv6IfIcmpOutErrors, # of output error messages */ 241 uint64_t ifs6_out_error; 242 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 243 uint64_t ifs6_out_dstunreach; 244 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 245 uint64_t ifs6_out_adminprohib; 246 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 247 uint64_t ifs6_out_timeexceed; 248 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 249 uint64_t ifs6_out_paramprob; 250 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 251 uint64_t ifs6_out_pkttoobig; 252 /* ipv6IfIcmpOutEchos, # of output echo requests */ 253 uint64_t ifs6_out_echo; 254 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 255 uint64_t ifs6_out_echoreply; 256 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 257 uint64_t ifs6_out_routersolicit; 258 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 259 uint64_t ifs6_out_routeradvert; 260 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 261 uint64_t ifs6_out_neighborsolicit; 262 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 263 uint64_t ifs6_out_neighboradvert; 264 /* ipv6IfIcmpOutRedirects, # of output redirects */ 265 uint64_t ifs6_out_redirect; 266 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 267 uint64_t ifs6_out_mldquery; 268 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 269 uint64_t ifs6_out_mldreport; 270 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 271 uint64_t ifs6_out_mlddone; 272}; 273 274struct in6_ifreq { 275 char ifr_name[IFNAMSIZ]; 276 union { 277 struct sockaddr_in6 ifru_addr; 278 struct sockaddr_in6 ifru_dstaddr; 279 int ifru_flags; 280 int ifru_flags6; 281 int ifru_metric; 282 caddr_t ifru_data; 283 struct in6_addrlifetime ifru_lifetime; 284 struct in6_ifstat ifru_stat; 285 struct icmp6_ifstat ifru_icmp6stat; 286 u_int32_t ifru_scope_id[16]; 287 } ifr_ifru; 288}; 289 290struct in6_aliasreq { 291 char ifra_name[IFNAMSIZ]; 292 struct sockaddr_in6 ifra_addr; 293 struct sockaddr_in6 ifra_dstaddr; 294 struct sockaddr_in6 ifra_prefixmask; 295 int ifra_flags; 296 struct in6_addrlifetime ifra_lifetime; 297 int ifra_vhid; 298}; 299 300/* pre-10.x compat */ 301struct oin6_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}; 309 310/* prefix type macro */ 311#define IN6_PREFIX_ND 1 312#define IN6_PREFIX_RR 2 313 314/* 315 * prefix related flags passed between kernel(NDP related part) and 316 * user land command(ifconfig) and daemon(rtadvd). 317 */ 318struct in6_prflags { 319 struct prf_ra { 320 u_char onlink : 1; 321 u_char autonomous : 1; 322 u_char reserved : 6; 323 } prf_ra; 324 u_char prf_reserved1; 325 u_short prf_reserved2; 326 /* want to put this on 4byte offset */ 327 struct prf_rr { 328 u_char decrvalid : 1; 329 u_char decrprefd : 1; 330 u_char reserved : 6; 331 } prf_rr; 332 u_char prf_reserved3; 333 u_short prf_reserved4; 334}; 335 336struct in6_prefixreq { 337 char ipr_name[IFNAMSIZ]; 338 u_char ipr_origin; 339 u_char ipr_plen; 340 u_int32_t ipr_vltime; 341 u_int32_t ipr_pltime; 342 struct in6_prflags ipr_flags; 343 struct sockaddr_in6 ipr_prefix; 344}; 345 346#define PR_ORIG_RA 0 347#define PR_ORIG_RR 1 348#define PR_ORIG_STATIC 2 349#define PR_ORIG_KERNEL 3 350 351#define ipr_raf_onlink ipr_flags.prf_ra.onlink 352#define ipr_raf_auto ipr_flags.prf_ra.autonomous 353 354#define ipr_statef_onlink ipr_flags.prf_state.onlink 355 356#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 357#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 358 359struct in6_rrenumreq { 360 char irr_name[IFNAMSIZ]; 361 u_char irr_origin; 362 u_char irr_m_len; /* match len for matchprefix */ 363 u_char irr_m_minlen; /* minlen for matching prefix */ 364 u_char irr_m_maxlen; /* maxlen for matching prefix */ 365 u_char irr_u_uselen; /* uselen for adding prefix */ 366 u_char irr_u_keeplen; /* keeplen from matching prefix */ 367 struct irr_raflagmask { 368 u_char onlink : 1; 369 u_char autonomous : 1; 370 u_char reserved : 6; 371 } irr_raflagmask; 372 u_int32_t irr_vltime; 373 u_int32_t irr_pltime; 374 struct in6_prflags irr_flags; 375 struct sockaddr_in6 irr_matchprefix; 376 struct sockaddr_in6 irr_useprefix; 377}; 378 379#define irr_raf_mask_onlink irr_raflagmask.onlink 380#define irr_raf_mask_auto irr_raflagmask.autonomous 381#define irr_raf_mask_reserved irr_raflagmask.reserved 382 383#define irr_raf_onlink irr_flags.prf_ra.onlink 384#define irr_raf_auto irr_flags.prf_ra.autonomous 385 386#define irr_statef_onlink irr_flags.prf_state.onlink 387 388#define irr_rrf irr_flags.prf_rr 389#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 390#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 391 392/* 393 * Given a pointer to an in6_ifaddr (ifaddr), 394 * return a pointer to the addr as a sockaddr_in6 395 */ 396#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 397#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 398#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 399#define IA6_SIN6(ia) (&((ia)->ia_addr)) 400#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 401#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 402#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 403 404#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 405 406#ifdef _KERNEL 407#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 408 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 409 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 410 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 411 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 412#define IN6_MASK_ADDR(a, m) do { \ 413 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \ 414 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \ 415 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \ 416 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \ 417} while (0) 418#endif 419 420#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 421#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 422 423#ifdef _KERNEL 424/* 425 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 426 * we do not shift numbers for binary compatibility. 427 */ 428#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 429#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 430#endif 431 432#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 433#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 434 435#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 436#define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 437#define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 438 439#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 440#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 441#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 442 443#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 444 445#ifdef _KERNEL 446#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 447#endif 448#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 449#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 450#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 451#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 452#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 453#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 454 455#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 456#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 457#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 458 459#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 460#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 461 462#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 463 464#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 465#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 466#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 467 468#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 469#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 470#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 471#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 472#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 473 struct in6_rrenumreq) /* change */ 474#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 475 struct in6_rrenumreq) /* set global */ 476 477#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 478 struct sioc_sg_req6) /* get s,g pkt cnt */ 479#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 480 struct sioc_mif_req6) /* get pkt cnt per if */ 481 482#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 483#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 484 485#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 486#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 487#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 488#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 489#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 490#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 491 * (obsolete) 492 */ 493#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 494#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 495#define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */ 496 497/* do not input/output */ 498#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 499 500#ifdef _KERNEL 501#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 502#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 503#endif 504 505#ifdef _KERNEL 506VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 507VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 508VNET_DECLARE(u_long, in6_ifaddrhmask); 509#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 510#define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 511#define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 512 513#define IN6ADDR_NHASH_LOG2 8 514#define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 515#define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 516#define IN6ADDR_HASH(x) \ 517 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 518 519static __inline uint32_t 520in6_addrhash(const struct in6_addr *in6) 521{ 522 uint32_t x; 523 524 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 525 in6->s6_addr32[3]; 526 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 527} 528 529extern struct rmlock in6_ifaddr_lock; 530#define IN6_IFADDR_LOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_LOCKED) 531#define IN6_IFADDR_RLOCK(t) rm_rlock(&in6_ifaddr_lock, (t)) 532#define IN6_IFADDR_RLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_RLOCKED) 533#define IN6_IFADDR_RUNLOCK(t) rm_runlock(&in6_ifaddr_lock, (t)) 534#define IN6_IFADDR_WLOCK() rm_wlock(&in6_ifaddr_lock) 535#define IN6_IFADDR_WLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_WLOCKED) 536#define IN6_IFADDR_WUNLOCK() rm_wunlock(&in6_ifaddr_lock) 537 538#define in6_ifstat_inc(ifp, tag) \ 539do { \ 540 if (ifp) \ 541 counter_u64_add(((struct in6_ifextra *) \ 542 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \ 543 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\ 544} while (/*CONSTCOND*/ 0) 545 546extern u_char inet6ctlerrmap[]; 547VNET_DECLARE(unsigned long, in6_maxmtu); 548#define V_in6_maxmtu VNET(in6_maxmtu) 549#endif /* _KERNEL */ 550 551/* 552 * IPv6 multicast MLD-layer source entry. 553 */ 554struct ip6_msource { 555 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 556 struct in6_addr im6s_addr; 557 struct im6s_st { 558 uint16_t ex; /* # of exclusive members */ 559 uint16_t in; /* # of inclusive members */ 560 } im6s_st[2]; /* state at t0, t1 */ 561 uint8_t im6s_stp; /* pending query */ 562}; 563RB_HEAD(ip6_msource_tree, ip6_msource); 564 565/* 566 * IPv6 multicast PCB-layer source entry. 567 * 568 * NOTE: overlapping use of struct ip6_msource fields at start. 569 */ 570struct in6_msource { 571 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 572 struct in6_addr im6s_addr; /* Common field */ 573 uint8_t im6sl_st[2]; /* state before/at commit */ 574}; 575 576#ifdef _KERNEL 577/* 578 * IPv6 source tree comparison function. 579 * 580 * An ordered predicate is necessary; bcmp() is not documented to return 581 * an indication of order, memcmp() is, and is an ISO C99 requirement. 582 */ 583static __inline int 584ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 585{ 586 587 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 588} 589RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 590 591/* 592 * IPv6 multicast PCB-layer group filter descriptor. 593 */ 594struct in6_mfilter { 595 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 596 u_long im6f_nsrc; /* # of source entries */ 597 uint8_t im6f_st[2]; /* state before/at commit */ 598}; 599 600/* 601 * Legacy KAME IPv6 multicast membership descriptor. 602 */ 603struct in6_multi_mship { 604 struct in6_multi *i6mm_maddr; 605 LIST_ENTRY(in6_multi_mship) i6mm_chain; 606}; 607 608/* 609 * IPv6 group descriptor. 610 * 611 * For every entry on an ifnet's if_multiaddrs list which represents 612 * an IP multicast group, there is one of these structures. 613 * 614 * If any source filters are present, then a node will exist in the RB-tree 615 * to permit fast lookup by source whenever an operation takes place. 616 * This permits pre-order traversal when we issue reports. 617 * Source filter trees are kept separately from the socket layer to 618 * greatly simplify locking. 619 * 620 * When MLDv2 is active, in6m_timer is the response to group query timer. 621 * The state-change timer in6m_sctimer is separate; whenever state changes 622 * for the group the state change record is generated and transmitted, 623 * and kept if retransmissions are necessary. 624 * 625 * FUTURE: in6m_link is now only used when groups are being purged 626 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 627 * because it is at the very start of the struct, we can't do this 628 * w/o breaking the ABI for ifmcstat. 629 */ 630struct in6_multi { 631 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 632 struct in6_addr in6m_addr; /* IPv6 multicast address */ 633 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 634 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 635 u_int in6m_refcount; /* reference count */ 636 u_int in6m_state; /* state of the membership */ 637 u_int in6m_timer; /* MLD6 listener report timer */ 638 639 /* New fields for MLDv2 follow. */ 640 struct mld_ifsoftc *in6m_mli; /* MLD info */ 641 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 642 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 643 u_long in6m_nsrc; /* # of tree entries */ 644 645 struct mbufq in6m_scq; /* queue of pending 646 * state-change packets */ 647 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 648 uint16_t in6m_sctimer; /* state-change timer */ 649 uint16_t in6m_scrv; /* state-change rexmit count */ 650 651 /* 652 * SSM state counters which track state at T0 (the time the last 653 * state-change report's RV timer went to zero) and T1 654 * (time of pending report, i.e. now). 655 * Used for computing MLDv2 state-change reports. Several refcounts 656 * are maintained here to optimize for common use-cases. 657 */ 658 struct in6m_st { 659 uint16_t iss_fmode; /* MLD filter mode */ 660 uint16_t iss_asm; /* # of ASM listeners */ 661 uint16_t iss_ex; /* # of exclusive members */ 662 uint16_t iss_in; /* # of inclusive members */ 663 uint16_t iss_rec; /* # of recorded sources */ 664 } in6m_st[2]; /* state at t0, t1 */ 665}; 666 667/* 668 * Helper function to derive the filter mode on a source entry 669 * from its internal counters. Predicates are: 670 * A source is only excluded if all listeners exclude it. 671 * A source is only included if no listeners exclude it, 672 * and at least one listener includes it. 673 * May be used by ifmcstat(8). 674 */ 675static __inline uint8_t 676im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 677 uint8_t t) 678{ 679 680 t = !!t; 681 if (inm->in6m_st[t].iss_ex > 0 && 682 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 683 return (MCAST_EXCLUDE); 684 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 685 return (MCAST_INCLUDE); 686 return (MCAST_UNDEFINED); 687} 688 689/* 690 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 691 * before link layer multicast locks in the lock order. In most cases, 692 * consumers of IN_*_MULTI() macros should acquire the locks before 693 * calling them; users of the in_{add,del}multi() functions should not. 694 */ 695extern struct mtx in6_multi_mtx; 696#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 697#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 698#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 699#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 700 701/* 702 * Look up an in6_multi record for an IPv6 multicast address 703 * on the interface ifp. 704 * If no record found, return NULL. 705 * 706 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 707 */ 708static __inline struct in6_multi * 709in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 710{ 711 struct ifmultiaddr *ifma; 712 struct in6_multi *inm; 713 714 IN6_MULTI_LOCK_ASSERT(); 715 IF_ADDR_LOCK_ASSERT(ifp); 716 717 inm = NULL; 718 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 719 if (ifma->ifma_addr->sa_family == AF_INET6) { 720 inm = (struct in6_multi *)ifma->ifma_protospec; 721 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 722 break; 723 inm = NULL; 724 } 725 } 726 return (inm); 727} 728 729/* 730 * Wrapper for in6m_lookup_locked(). 731 * 732 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 733 */ 734static __inline struct in6_multi * 735in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 736{ 737 struct in6_multi *inm; 738 739 IN6_MULTI_LOCK(); 740 IF_ADDR_RLOCK(ifp); 741 inm = in6m_lookup_locked(ifp, mcaddr); 742 IF_ADDR_RUNLOCK(ifp); 743 IN6_MULTI_UNLOCK(); 744 745 return (inm); 746} 747 748/* Acquire an in6_multi record. */ 749static __inline void 750in6m_acquire_locked(struct in6_multi *inm) 751{ 752 753 IN6_MULTI_LOCK_ASSERT(); 754 ++inm->in6m_refcount; 755} 756 757struct ip6_moptions; 758struct sockopt; 759 760/* Multicast KPIs. */ 761int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 762 const struct sockaddr *, const struct sockaddr *); 763int in6_mc_join(struct ifnet *, const struct in6_addr *, 764 struct in6_mfilter *, struct in6_multi **, int); 765int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 766 struct in6_mfilter *, struct in6_multi **, int); 767int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 768int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 769void in6m_clear_recorded(struct in6_multi *); 770void in6m_commit(struct in6_multi *); 771void in6m_print(const struct in6_multi *); 772int in6m_record_source(struct in6_multi *, const struct in6_addr *); 773void in6m_release_locked(struct in6_multi *); 774void ip6_freemoptions(struct ip6_moptions *); 775int ip6_getmoptions(struct inpcb *, struct sockopt *); 776int ip6_setmoptions(struct inpcb *, struct sockopt *); 777 778/* Legacy KAME multicast KPIs. */ 779struct in6_multi_mship * 780 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 781int in6_leavegroup(struct in6_multi_mship *); 782 783/* flags to in6_update_ifa */ 784#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 785 786int in6_mask2len(struct in6_addr *, u_char *); 787int in6_control(struct socket *, u_long, caddr_t, struct ifnet *, 788 struct thread *); 789int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 790 struct in6_ifaddr *, int); 791void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *, 792 const struct in6_addr *); 793void in6_purgeaddr(struct ifaddr *); 794int in6if_do_dad(struct ifnet *); 795void in6_savemkludge(struct in6_ifaddr *); 796void *in6_domifattach(struct ifnet *); 797void in6_domifdetach(struct ifnet *, void *); 798int in6_domifmtu(struct ifnet *); 799void in6_setmaxmtu(void); 800int in6_if2idlen(struct ifnet *); 801struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 802struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, const struct in6_addr *); 803struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t); 804struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 805int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 806int in6_matchlen(struct in6_addr *, struct in6_addr *); 807int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 808void in6_prefixlen2mask(struct in6_addr *, int); 809int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 810 struct ifnet *); 811int in6_prefix_add_ifid(int, struct in6_ifaddr *); 812void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 813void in6_purgeprefix(struct ifnet *); 814 815int in6_is_addr_deprecated(struct sockaddr_in6 *); 816int in6_src_ioctl(u_long, caddr_t); 817 818void in6_newaddrmsg(struct in6_ifaddr *, int); 819/* 820 * Extended API for IPv6 FIB support. 821 */ 822struct mbuf *ip6_tryforward(struct mbuf *); 823void in6_rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 824 int, struct sockaddr *, u_int); 825int in6_rtrequest(int, struct sockaddr *, struct sockaddr *, 826 struct sockaddr *, int, struct rtentry **, u_int); 827void in6_rtalloc(struct route_in6 *, u_int); 828void in6_rtalloc_ign(struct route_in6 *, u_long, u_int); 829struct rtentry *in6_rtalloc1(struct sockaddr *, int, u_long, u_int); 830#endif /* _KERNEL */ 831 832#endif /* _NETINET6_IN6_VAR_H_ */ 833