in6_var.h revision 195727
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 195727 2009-07-16 21:13:04Z rwatson $ 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}; 291 292/* prefix type macro */ 293#define IN6_PREFIX_ND 1 294#define IN6_PREFIX_RR 2 295 296/* 297 * prefix related flags passed between kernel(NDP related part) and 298 * user land command(ifconfig) and daemon(rtadvd). 299 */ 300struct in6_prflags { 301 struct prf_ra { 302 u_char onlink : 1; 303 u_char autonomous : 1; 304 u_char reserved : 6; 305 } prf_ra; 306 u_char prf_reserved1; 307 u_short prf_reserved2; 308 /* want to put this on 4byte offset */ 309 struct prf_rr { 310 u_char decrvalid : 1; 311 u_char decrprefd : 1; 312 u_char reserved : 6; 313 } prf_rr; 314 u_char prf_reserved3; 315 u_short prf_reserved4; 316}; 317 318struct in6_prefixreq { 319 char ipr_name[IFNAMSIZ]; 320 u_char ipr_origin; 321 u_char ipr_plen; 322 u_int32_t ipr_vltime; 323 u_int32_t ipr_pltime; 324 struct in6_prflags ipr_flags; 325 struct sockaddr_in6 ipr_prefix; 326}; 327 328#define PR_ORIG_RA 0 329#define PR_ORIG_RR 1 330#define PR_ORIG_STATIC 2 331#define PR_ORIG_KERNEL 3 332 333#define ipr_raf_onlink ipr_flags.prf_ra.onlink 334#define ipr_raf_auto ipr_flags.prf_ra.autonomous 335 336#define ipr_statef_onlink ipr_flags.prf_state.onlink 337 338#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 339#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 340 341struct in6_rrenumreq { 342 char irr_name[IFNAMSIZ]; 343 u_char irr_origin; 344 u_char irr_m_len; /* match len for matchprefix */ 345 u_char irr_m_minlen; /* minlen for matching prefix */ 346 u_char irr_m_maxlen; /* maxlen for matching prefix */ 347 u_char irr_u_uselen; /* uselen for adding prefix */ 348 u_char irr_u_keeplen; /* keeplen from matching prefix */ 349 struct irr_raflagmask { 350 u_char onlink : 1; 351 u_char autonomous : 1; 352 u_char reserved : 6; 353 } irr_raflagmask; 354 u_int32_t irr_vltime; 355 u_int32_t irr_pltime; 356 struct in6_prflags irr_flags; 357 struct sockaddr_in6 irr_matchprefix; 358 struct sockaddr_in6 irr_useprefix; 359}; 360 361#define irr_raf_mask_onlink irr_raflagmask.onlink 362#define irr_raf_mask_auto irr_raflagmask.autonomous 363#define irr_raf_mask_reserved irr_raflagmask.reserved 364 365#define irr_raf_onlink irr_flags.prf_ra.onlink 366#define irr_raf_auto irr_flags.prf_ra.autonomous 367 368#define irr_statef_onlink irr_flags.prf_state.onlink 369 370#define irr_rrf irr_flags.prf_rr 371#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 372#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 373 374/* 375 * Given a pointer to an in6_ifaddr (ifaddr), 376 * return a pointer to the addr as a sockaddr_in6 377 */ 378#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 379#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 380#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 381#define IA6_SIN6(ia) (&((ia)->ia_addr)) 382#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 383#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 384#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 385 386#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 387 388#ifdef _KERNEL 389#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 390 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 391 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 392 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 393 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 394#endif 395 396#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 397#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 398 399#ifdef _KERNEL 400/* 401 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 402 * we do not shift numbers for binary compatibility. 403 */ 404#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 405#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 406#endif 407 408#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 409#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 410 411#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 412#define SIOCAIFADDR_IN6 _IOW('i', 26, struct in6_aliasreq) 413 414#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 415#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 416#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 417 418#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 419 420#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 421#ifdef _KERNEL 422/* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 423#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 424#endif 425#ifdef _KERNEL 426#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 427#endif 428#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 429#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 430#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 431#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 432#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 433#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 434 435#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 436#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 437#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 438#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 439 440#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 441#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 442 443#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 444 445#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 446#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 447#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 448 449#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 450#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 451#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 452#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 453#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 454 struct in6_rrenumreq) /* change */ 455#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 456 struct in6_rrenumreq) /* set global */ 457 458#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 459 struct sioc_sg_req6) /* get s,g pkt cnt */ 460#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 461 struct sioc_mif_req6) /* get pkt cnt per if */ 462 463#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 464#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 465 466#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 467#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 468#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 469#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 470#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 471#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 472 * (used only at first SIOC* call) 473 */ 474#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 475#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 476#define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 477 * XXX: this should be temporary. 478 */ 479 480/* do not input/output */ 481#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 482 483#ifdef _KERNEL 484#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 485#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 486#endif 487 488#ifdef _KERNEL 489VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 490VNET_DECLARE(struct icmp6stat, icmp6stat); 491VNET_DECLARE(unsigned long, in6_maxmtu); 492 493#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 494#define V_icmp6stat VNET(icmp6stat) 495#define V_in6_maxmtu VNET(in6_maxmtu) 496 497extern struct rwlock in6_ifaddr_lock; 498#define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 499#define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 500#define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 501#define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 502#define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 503#define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 504#define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 505 506#define in6_ifstat_inc(ifp, tag) \ 507do { \ 508 if (ifp) \ 509 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \ 510} while (/*CONSTCOND*/ 0) 511 512extern struct in6_addr zeroin6_addr; 513extern u_char inet6ctlerrmap[]; 514#endif /* _KERNEL */ 515 516/* 517 * IPv6 multicast MLD-layer source entry. 518 */ 519struct ip6_msource { 520 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 521 struct in6_addr im6s_addr; 522 struct im6s_st { 523 uint16_t ex; /* # of exclusive members */ 524 uint16_t in; /* # of inclusive members */ 525 } im6s_st[2]; /* state at t0, t1 */ 526 uint8_t im6s_stp; /* pending query */ 527}; 528RB_HEAD(ip6_msource_tree, ip6_msource); 529 530/* 531 * IPv6 multicast PCB-layer source entry. 532 * 533 * NOTE: overlapping use of struct ip6_msource fields at start. 534 */ 535struct in6_msource { 536 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 537 struct in6_addr im6s_addr; /* Common field */ 538 uint8_t im6sl_st[2]; /* state before/at commit */ 539}; 540 541#ifdef _KERNEL 542/* 543 * IPv6 source tree comparison function. 544 * 545 * An ordered predicate is necessary; bcmp() is not documented to return 546 * an indication of order, memcmp() is, and is an ISO C99 requirement. 547 */ 548static __inline int 549ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 550{ 551 552 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 553} 554RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 555#endif /* _KERNEL */ 556 557/* 558 * IPv6 multicast PCB-layer group filter descriptor. 559 */ 560struct in6_mfilter { 561 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 562 u_long im6f_nsrc; /* # of source entries */ 563 uint8_t im6f_st[2]; /* state before/at commit */ 564}; 565 566/* 567 * Legacy KAME IPv6 multicast membership descriptor. 568 */ 569struct in6_multi_mship { 570 struct in6_multi *i6mm_maddr; 571 LIST_ENTRY(in6_multi_mship) i6mm_chain; 572}; 573 574/* 575 * IPv6 group descriptor. 576 * 577 * For every entry on an ifnet's if_multiaddrs list which represents 578 * an IP multicast group, there is one of these structures. 579 * 580 * If any source filters are present, then a node will exist in the RB-tree 581 * to permit fast lookup by source whenever an operation takes place. 582 * This permits pre-order traversal when we issue reports. 583 * Source filter trees are kept separately from the socket layer to 584 * greatly simplify locking. 585 * 586 * When MLDv2 is active, in6m_timer is the response to group query timer. 587 * The state-change timer in6m_sctimer is separate; whenever state changes 588 * for the group the state change record is generated and transmitted, 589 * and kept if retransmissions are necessary. 590 * 591 * FUTURE: in6m_link is now only used when groups are being purged 592 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 593 * because it is at the very start of the struct, we can't do this 594 * w/o breaking the ABI for ifmcstat. 595 */ 596struct in6_multi { 597 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 598 struct in6_addr in6m_addr; /* IPv6 multicast address */ 599 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 600 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 601 u_int in6m_refcount; /* reference count */ 602 u_int in6m_state; /* state of the membership */ 603 u_int in6m_timer; /* MLD6 listener report timer */ 604 605 /* New fields for MLDv2 follow. */ 606 struct mld_ifinfo *in6m_mli; /* MLD info */ 607 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 608 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 609 u_long in6m_nsrc; /* # of tree entries */ 610 611 struct ifqueue in6m_scq; /* queue of pending 612 * state-change packets */ 613 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 614 uint16_t in6m_sctimer; /* state-change timer */ 615 uint16_t in6m_scrv; /* state-change rexmit count */ 616 617 /* 618 * SSM state counters which track state at T0 (the time the last 619 * state-change report's RV timer went to zero) and T1 620 * (time of pending report, i.e. now). 621 * Used for computing MLDv2 state-change reports. Several refcounts 622 * are maintained here to optimize for common use-cases. 623 */ 624 struct in6m_st { 625 uint16_t iss_fmode; /* MLD filter mode */ 626 uint16_t iss_asm; /* # of ASM listeners */ 627 uint16_t iss_ex; /* # of exclusive members */ 628 uint16_t iss_in; /* # of inclusive members */ 629 uint16_t iss_rec; /* # of recorded sources */ 630 } in6m_st[2]; /* state at t0, t1 */ 631}; 632 633/* 634 * Helper function to derive the filter mode on a source entry 635 * from its internal counters. Predicates are: 636 * A source is only excluded if all listeners exclude it. 637 * A source is only included if no listeners exclude it, 638 * and at least one listener includes it. 639 * May be used by ifmcstat(8). 640 */ 641static __inline uint8_t 642im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 643 uint8_t t) 644{ 645 646 t = !!t; 647 if (inm->in6m_st[t].iss_ex > 0 && 648 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 649 return (MCAST_EXCLUDE); 650 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 651 return (MCAST_INCLUDE); 652 return (MCAST_UNDEFINED); 653} 654 655#ifdef _KERNEL 656 657/* 658 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 659 * before link layer multicast locks in the lock order. In most cases, 660 * consumers of IN_*_MULTI() macros should acquire the locks before 661 * calling them; users of the in_{add,del}multi() functions should not. 662 */ 663extern struct mtx in6_multi_mtx; 664#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 665#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 666#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 667#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 668 669/* 670 * Look up an in6_multi record for an IPv6 multicast address 671 * on the interface ifp. 672 * If no record found, return NULL. 673 * 674 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 675 */ 676static __inline struct in6_multi * 677in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 678{ 679 struct ifmultiaddr *ifma; 680 struct in6_multi *inm; 681 682 IN6_MULTI_LOCK_ASSERT(); 683 IF_ADDR_LOCK_ASSERT(ifp); 684 685 inm = NULL; 686 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 687 if (ifma->ifma_addr->sa_family == AF_INET6) { 688 inm = (struct in6_multi *)ifma->ifma_protospec; 689 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 690 break; 691 inm = NULL; 692 } 693 } 694 return (inm); 695} 696 697/* 698 * Wrapper for in6m_lookup_locked(). 699 * 700 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 701 */ 702static __inline struct in6_multi * 703in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 704{ 705 struct in6_multi *inm; 706 707 IN6_MULTI_LOCK(); 708 IF_ADDR_LOCK(ifp); 709 inm = in6m_lookup_locked(ifp, mcaddr); 710 IF_ADDR_UNLOCK(ifp); 711 IN6_MULTI_UNLOCK(); 712 713 return (inm); 714} 715 716/* Acquire an in6_multi record. */ 717static __inline void 718in6m_acquire_locked(struct in6_multi *inm) 719{ 720 721 IN6_MULTI_LOCK_ASSERT(); 722 ++inm->in6m_refcount; 723} 724 725struct ip6_moptions; 726struct sockopt; 727 728/* Multicast KPIs. */ 729int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 730 const struct sockaddr *, const struct sockaddr *); 731int in6_mc_join(struct ifnet *, const struct in6_addr *, 732 struct in6_mfilter *, struct in6_multi **, int); 733int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 734 struct in6_mfilter *, struct in6_multi **, int); 735int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 736int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 737void in6m_clear_recorded(struct in6_multi *); 738void in6m_commit(struct in6_multi *); 739void in6m_print(const struct in6_multi *); 740int in6m_record_source(struct in6_multi *, const struct in6_addr *); 741void in6m_release_locked(struct in6_multi *); 742void ip6_freemoptions(struct ip6_moptions *); 743int ip6_getmoptions(struct inpcb *, struct sockopt *); 744int ip6_setmoptions(struct inpcb *, struct sockopt *); 745 746/* Legacy KAME multicast KPIs. */ 747struct in6_multi_mship * 748 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 749int in6_leavegroup(struct in6_multi_mship *); 750 751/* flags to in6_update_ifa */ 752#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 753 754int in6_mask2len __P((struct in6_addr *, u_char *)); 755int in6_control __P((struct socket *, u_long, caddr_t, struct ifnet *, 756 struct thread *)); 757int in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *, 758 struct in6_ifaddr *, int)); 759void in6_purgeaddr __P((struct ifaddr *)); 760int in6if_do_dad __P((struct ifnet *)); 761void in6_purgeif __P((struct ifnet *)); 762void in6_savemkludge __P((struct in6_ifaddr *)); 763void *in6_domifattach __P((struct ifnet *)); 764void in6_domifdetach __P((struct ifnet *, void *)); 765void in6_setmaxmtu __P((void)); 766int in6_if2idlen __P((struct ifnet *)); 767struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int)); 768struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *, struct in6_addr *)); 769char *ip6_sprintf __P((char *, const struct in6_addr *)); 770int in6_addr2zoneid __P((struct ifnet *, struct in6_addr *, u_int32_t *)); 771int in6_matchlen __P((struct in6_addr *, struct in6_addr *)); 772int in6_are_prefix_equal __P((struct in6_addr *, struct in6_addr *, int)); 773void in6_prefixlen2mask __P((struct in6_addr *, int)); 774int in6_prefix_ioctl __P((struct socket *, u_long, caddr_t, 775 struct ifnet *)); 776int in6_prefix_add_ifid __P((int, struct in6_ifaddr *)); 777void in6_prefix_remove_ifid __P((int, struct in6_ifaddr *)); 778void in6_purgeprefix __P((struct ifnet *)); 779void in6_ifremloop(struct ifaddr *); 780void in6_ifaddloop(struct ifaddr *); 781 782int in6_is_addr_deprecated __P((struct sockaddr_in6 *)); 783struct inpcb; 784int in6_src_ioctl __P((u_long, caddr_t)); 785#endif /* _KERNEL */ 786 787#endif /* _NETINET6_IN6_VAR_H_ */ 788