in6_var.h revision 252511
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 252511 2013-07-02 16:58:15Z hrs $ 62 */ 63 64#ifndef _NETINET6_IN6_VAR_H_ 65#define _NETINET6_IN6_VAR_H_ 66 67#include <sys/tree.h> 68 69#ifdef _KERNEL 70#include <sys/fnv_hash.h> 71#include <sys/libkern.h> 72#endif 73 74/* 75 * Interface address, Internet version. One of these structures 76 * is allocated for each interface with an Internet address. 77 * The ifaddr structure contains the protocol-independent part 78 * of the structure and is assumed to be first. 79 */ 80 81/* 82 * pltime/vltime are just for future reference (required to implements 2 83 * hour rule for hosts). they should never be modified by nd6_timeout or 84 * anywhere else. 85 * userland -> kernel: accept pltime/vltime 86 * kernel -> userland: throw up everything 87 * in kernel: modify preferred/expire only 88 */ 89struct in6_addrlifetime { 90 time_t ia6t_expire; /* valid lifetime expiration time */ 91 time_t ia6t_preferred; /* preferred lifetime expiration time */ 92 u_int32_t ia6t_vltime; /* valid lifetime */ 93 u_int32_t ia6t_pltime; /* prefix lifetime */ 94}; 95 96struct nd_ifinfo; 97struct scope6_id; 98struct lltable; 99struct mld_ifinfo; 100 101struct in6_ifextra { 102 struct in6_ifstat *in6_ifstat; 103 struct icmp6_ifstat *icmp6_ifstat; 104 struct nd_ifinfo *nd_ifinfo; 105 struct scope6_id *scope6_id; 106 struct lltable *lltable; 107 struct mld_ifinfo *mld_ifinfo; 108}; 109 110#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 111 112struct in6_ifaddr { 113 struct ifaddr ia_ifa; /* protocol-independent info */ 114#define ia_ifp ia_ifa.ifa_ifp 115#define ia_flags ia_ifa.ifa_flags 116 struct sockaddr_in6 ia_addr; /* interface address */ 117 struct sockaddr_in6 ia_net; /* network number of interface */ 118 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 119 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 120 u_int32_t ia_plen; /* prefix length */ 121 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 122 int ia6_flags; 123 124 struct in6_addrlifetime ia6_lifetime; 125 time_t ia6_createtime; /* the creation time of this address, which is 126 * currently used for temporary addresses only. 127 */ 128 time_t ia6_updatetime; 129 130 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 131 struct nd_prefix *ia6_ndpr; 132 133 /* multicast addresses joined from the kernel */ 134 LIST_HEAD(, in6_multi_mship) ia6_memberships; 135 /* entry in bucket of inet6 addresses */ 136 LIST_ENTRY(in6_ifaddr) ia6_hash; 137}; 138 139/* List of in6_ifaddr's. */ 140TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 141LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 142 143/* control structure to manage address selection policy */ 144struct in6_addrpolicy { 145 struct sockaddr_in6 addr; /* prefix address */ 146 struct sockaddr_in6 addrmask; /* prefix mask */ 147 int preced; /* precedence */ 148 int label; /* matching label */ 149 u_quad_t use; /* statistics */ 150}; 151 152/* 153 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 154 */ 155struct in6_ifstat { 156 u_quad_t ifs6_in_receive; /* # of total input datagram */ 157 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 158 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 159 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */ 160 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 161 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 162 /* NOTE: increment on final dst if */ 163 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */ 164 u_quad_t ifs6_in_discard; /* # of discarded datagrams */ 165 /* NOTE: fragment timeout is not here */ 166 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 167 /* NOTE: increment on final dst if */ 168 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */ 169 /* NOTE: increment on outgoing if */ 170 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 171 /* NOTE: does not include forwrads */ 172 u_quad_t ifs6_out_discard; /* # of discarded datagrams */ 173 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */ 174 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 175 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */ 176 /* NOTE: this is # after fragment */ 177 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 178 /* NOTE: increment on final dst if */ 179 u_quad_t ifs6_reass_ok; /* # of reassembled packets */ 180 /* NOTE: this is # after reass */ 181 /* NOTE: increment on final dst if */ 182 u_quad_t ifs6_reass_fail; /* # of reass failures */ 183 /* NOTE: may not be packet count */ 184 /* NOTE: increment on final dst if */ 185 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 186 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 187}; 188 189/* 190 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 191 * XXX: I'm not sure if this file is the right place for this structure... 192 */ 193struct icmp6_ifstat { 194 /* 195 * Input statistics 196 */ 197 /* ipv6IfIcmpInMsgs, total # of input messages */ 198 u_quad_t ifs6_in_msg; 199 /* ipv6IfIcmpInErrors, # of input error messages */ 200 u_quad_t ifs6_in_error; 201 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 202 u_quad_t ifs6_in_dstunreach; 203 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 204 u_quad_t ifs6_in_adminprohib; 205 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 206 u_quad_t ifs6_in_timeexceed; 207 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 208 u_quad_t ifs6_in_paramprob; 209 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 210 u_quad_t ifs6_in_pkttoobig; 211 /* ipv6IfIcmpInEchos, # of input echo requests */ 212 u_quad_t ifs6_in_echo; 213 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 214 u_quad_t ifs6_in_echoreply; 215 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 216 u_quad_t ifs6_in_routersolicit; 217 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 218 u_quad_t ifs6_in_routeradvert; 219 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 220 u_quad_t ifs6_in_neighborsolicit; 221 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 222 u_quad_t ifs6_in_neighboradvert; 223 /* ipv6IfIcmpInRedirects, # of input redirects */ 224 u_quad_t ifs6_in_redirect; 225 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 226 u_quad_t ifs6_in_mldquery; 227 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 228 u_quad_t ifs6_in_mldreport; 229 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 230 u_quad_t ifs6_in_mlddone; 231 232 /* 233 * Output statistics. We should solve unresolved routing problem... 234 */ 235 /* ipv6IfIcmpOutMsgs, total # of output messages */ 236 u_quad_t ifs6_out_msg; 237 /* ipv6IfIcmpOutErrors, # of output error messages */ 238 u_quad_t ifs6_out_error; 239 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 240 u_quad_t ifs6_out_dstunreach; 241 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 242 u_quad_t ifs6_out_adminprohib; 243 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 244 u_quad_t ifs6_out_timeexceed; 245 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 246 u_quad_t ifs6_out_paramprob; 247 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 248 u_quad_t ifs6_out_pkttoobig; 249 /* ipv6IfIcmpOutEchos, # of output echo requests */ 250 u_quad_t ifs6_out_echo; 251 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 252 u_quad_t ifs6_out_echoreply; 253 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 254 u_quad_t ifs6_out_routersolicit; 255 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 256 u_quad_t ifs6_out_routeradvert; 257 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 258 u_quad_t ifs6_out_neighborsolicit; 259 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 260 u_quad_t ifs6_out_neighboradvert; 261 /* ipv6IfIcmpOutRedirects, # of output redirects */ 262 u_quad_t ifs6_out_redirect; 263 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 264 u_quad_t ifs6_out_mldquery; 265 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 266 u_quad_t ifs6_out_mldreport; 267 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 268 u_quad_t ifs6_out_mlddone; 269}; 270 271struct in6_ifreq { 272 char ifr_name[IFNAMSIZ]; 273 union { 274 struct sockaddr_in6 ifru_addr; 275 struct sockaddr_in6 ifru_dstaddr; 276 int ifru_flags; 277 int ifru_flags6; 278 int ifru_metric; 279 caddr_t ifru_data; 280 struct in6_addrlifetime ifru_lifetime; 281 struct in6_ifstat ifru_stat; 282 struct icmp6_ifstat ifru_icmp6stat; 283 u_int32_t ifru_scope_id[16]; 284 } ifr_ifru; 285}; 286 287struct in6_aliasreq { 288 char ifra_name[IFNAMSIZ]; 289 struct sockaddr_in6 ifra_addr; 290 struct sockaddr_in6 ifra_dstaddr; 291 struct sockaddr_in6 ifra_prefixmask; 292 int ifra_flags; 293 struct in6_addrlifetime ifra_lifetime; 294 int ifra_vhid; 295}; 296 297/* pre-10.x compat */ 298struct oin6_aliasreq { 299 char ifra_name[IFNAMSIZ]; 300 struct sockaddr_in6 ifra_addr; 301 struct sockaddr_in6 ifra_dstaddr; 302 struct sockaddr_in6 ifra_prefixmask; 303 int ifra_flags; 304 struct in6_addrlifetime ifra_lifetime; 305}; 306 307/* prefix type macro */ 308#define IN6_PREFIX_ND 1 309#define IN6_PREFIX_RR 2 310 311/* 312 * prefix related flags passed between kernel(NDP related part) and 313 * user land command(ifconfig) and daemon(rtadvd). 314 */ 315struct in6_prflags { 316 struct prf_ra { 317 u_char onlink : 1; 318 u_char autonomous : 1; 319 u_char reserved : 6; 320 } prf_ra; 321 u_char prf_reserved1; 322 u_short prf_reserved2; 323 /* want to put this on 4byte offset */ 324 struct prf_rr { 325 u_char decrvalid : 1; 326 u_char decrprefd : 1; 327 u_char reserved : 6; 328 } prf_rr; 329 u_char prf_reserved3; 330 u_short prf_reserved4; 331}; 332 333struct in6_prefixreq { 334 char ipr_name[IFNAMSIZ]; 335 u_char ipr_origin; 336 u_char ipr_plen; 337 u_int32_t ipr_vltime; 338 u_int32_t ipr_pltime; 339 struct in6_prflags ipr_flags; 340 struct sockaddr_in6 ipr_prefix; 341}; 342 343#define PR_ORIG_RA 0 344#define PR_ORIG_RR 1 345#define PR_ORIG_STATIC 2 346#define PR_ORIG_KERNEL 3 347 348#define ipr_raf_onlink ipr_flags.prf_ra.onlink 349#define ipr_raf_auto ipr_flags.prf_ra.autonomous 350 351#define ipr_statef_onlink ipr_flags.prf_state.onlink 352 353#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 354#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 355 356struct in6_rrenumreq { 357 char irr_name[IFNAMSIZ]; 358 u_char irr_origin; 359 u_char irr_m_len; /* match len for matchprefix */ 360 u_char irr_m_minlen; /* minlen for matching prefix */ 361 u_char irr_m_maxlen; /* maxlen for matching prefix */ 362 u_char irr_u_uselen; /* uselen for adding prefix */ 363 u_char irr_u_keeplen; /* keeplen from matching prefix */ 364 struct irr_raflagmask { 365 u_char onlink : 1; 366 u_char autonomous : 1; 367 u_char reserved : 6; 368 } irr_raflagmask; 369 u_int32_t irr_vltime; 370 u_int32_t irr_pltime; 371 struct in6_prflags irr_flags; 372 struct sockaddr_in6 irr_matchprefix; 373 struct sockaddr_in6 irr_useprefix; 374}; 375 376#define irr_raf_mask_onlink irr_raflagmask.onlink 377#define irr_raf_mask_auto irr_raflagmask.autonomous 378#define irr_raf_mask_reserved irr_raflagmask.reserved 379 380#define irr_raf_onlink irr_flags.prf_ra.onlink 381#define irr_raf_auto irr_flags.prf_ra.autonomous 382 383#define irr_statef_onlink irr_flags.prf_state.onlink 384 385#define irr_rrf irr_flags.prf_rr 386#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 387#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 388 389/* 390 * Given a pointer to an in6_ifaddr (ifaddr), 391 * return a pointer to the addr as a sockaddr_in6 392 */ 393#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 394#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 395#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 396#define IA6_SIN6(ia) (&((ia)->ia_addr)) 397#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 398#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 399#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 400 401#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 402 403#ifdef _KERNEL 404#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 405 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 406 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 407 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 408 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 409#endif 410 411#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 412#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 413 414#ifdef _KERNEL 415/* 416 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 417 * we do not shift numbers for binary compatibility. 418 */ 419#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 420#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 421#endif 422 423#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 424#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 425 426#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 427#define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 428#define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 429 430#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 431#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 432#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 433 434#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 435 436#define SIOCGDRLST_IN6 _IOWR('i', 74, struct in6_drlist) 437#ifdef _KERNEL 438/* XXX: SIOCGPRLST_IN6 is exposed in KAME but in6_oprlist is not. */ 439#define SIOCGPRLST_IN6 _IOWR('i', 75, struct in6_oprlist) 440#endif 441#ifdef _KERNEL 442#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 443#endif 444#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 445#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 446#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 447#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 448#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 449#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 450 451#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 452#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq) 453#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 454#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 455 456#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 457#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 458 459#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 460 461#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 462#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 463#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 464 465#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 466#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 467#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 468#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 469#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 470 struct in6_rrenumreq) /* change */ 471#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 472 struct in6_rrenumreq) /* set global */ 473 474#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 475 struct sioc_sg_req6) /* get s,g pkt cnt */ 476#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 477 struct sioc_mif_req6) /* get pkt cnt per if */ 478 479#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 480#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 481 482#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 483#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 484#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 485#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 486#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 487#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 488 * (used only at first SIOC* call) 489 */ 490#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 491#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 492#define IN6_IFF_NOPFX 0x8000 /* skip kernel prefix management. 493 * XXX: this should be temporary. 494 */ 495 496/* do not input/output */ 497#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 498 499#ifdef _KERNEL 500#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 501#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 502#endif 503 504#ifdef _KERNEL 505VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 506VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 507VNET_DECLARE(u_long, in6_ifaddrhmask); 508#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 509#define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 510#define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 511 512#define IN6ADDR_NHASH_LOG2 8 513#define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 514#define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 515#define IN6ADDR_HASH(x) \ 516 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 517 518static __inline uint32_t 519in6_addrhash(struct in6_addr *in6) 520{ 521 uint32_t x; 522 523 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 524 in6->s6_addr32[3]; 525 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 526} 527 528extern struct rwlock in6_ifaddr_lock; 529#define IN6_IFADDR_LOCK_ASSERT( ) rw_assert(&in6_ifaddr_lock, RA_LOCKED) 530#define IN6_IFADDR_RLOCK() rw_rlock(&in6_ifaddr_lock) 531#define IN6_IFADDR_RLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_RLOCKED) 532#define IN6_IFADDR_RUNLOCK() rw_runlock(&in6_ifaddr_lock) 533#define IN6_IFADDR_WLOCK() rw_wlock(&in6_ifaddr_lock) 534#define IN6_IFADDR_WLOCK_ASSERT() rw_assert(&in6_ifaddr_lock, RA_WLOCKED) 535#define IN6_IFADDR_WUNLOCK() rw_wunlock(&in6_ifaddr_lock) 536 537VNET_DECLARE(struct icmp6stat, icmp6stat); 538#define V_icmp6stat VNET(icmp6stat) 539#define in6_ifstat_inc(ifp, tag) \ 540do { \ 541 if (ifp) \ 542 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \ 543} while (/*CONSTCOND*/ 0) 544 545extern u_char inet6ctlerrmap[]; 546VNET_DECLARE(unsigned long, in6_maxmtu); 547#define V_in6_maxmtu VNET(in6_maxmtu) 548#endif /* _KERNEL */ 549 550/* 551 * IPv6 multicast MLD-layer source entry. 552 */ 553struct ip6_msource { 554 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 555 struct in6_addr im6s_addr; 556 struct im6s_st { 557 uint16_t ex; /* # of exclusive members */ 558 uint16_t in; /* # of inclusive members */ 559 } im6s_st[2]; /* state at t0, t1 */ 560 uint8_t im6s_stp; /* pending query */ 561}; 562RB_HEAD(ip6_msource_tree, ip6_msource); 563 564/* 565 * IPv6 multicast PCB-layer source entry. 566 * 567 * NOTE: overlapping use of struct ip6_msource fields at start. 568 */ 569struct in6_msource { 570 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 571 struct in6_addr im6s_addr; /* Common field */ 572 uint8_t im6sl_st[2]; /* state before/at commit */ 573}; 574 575#ifdef _KERNEL 576/* 577 * IPv6 source tree comparison function. 578 * 579 * An ordered predicate is necessary; bcmp() is not documented to return 580 * an indication of order, memcmp() is, and is an ISO C99 requirement. 581 */ 582static __inline int 583ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 584{ 585 586 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 587} 588RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 589#endif /* _KERNEL */ 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_ifinfo *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 ifqueue 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#ifdef _KERNEL 690 691/* 692 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes 693 * before link layer multicast locks in the lock order. In most cases, 694 * consumers of IN_*_MULTI() macros should acquire the locks before 695 * calling them; users of the in_{add,del}multi() functions should not. 696 */ 697extern struct mtx in6_multi_mtx; 698#define IN6_MULTI_LOCK() mtx_lock(&in6_multi_mtx) 699#define IN6_MULTI_UNLOCK() mtx_unlock(&in6_multi_mtx) 700#define IN6_MULTI_LOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_OWNED) 701#define IN6_MULTI_UNLOCK_ASSERT() mtx_assert(&in6_multi_mtx, MA_NOTOWNED) 702 703/* 704 * Look up an in6_multi record for an IPv6 multicast address 705 * on the interface ifp. 706 * If no record found, return NULL. 707 * 708 * SMPng: The IN6_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 709 */ 710static __inline struct in6_multi * 711in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr) 712{ 713 struct ifmultiaddr *ifma; 714 struct in6_multi *inm; 715 716 IN6_MULTI_LOCK_ASSERT(); 717 IF_ADDR_LOCK_ASSERT(ifp); 718 719 inm = NULL; 720 TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 721 if (ifma->ifma_addr->sa_family == AF_INET6) { 722 inm = (struct in6_multi *)ifma->ifma_protospec; 723 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr)) 724 break; 725 inm = NULL; 726 } 727 } 728 return (inm); 729} 730 731/* 732 * Wrapper for in6m_lookup_locked(). 733 * 734 * SMPng: Assumes that neithr the IN6_MULTI_LOCK() or IF_ADDR_LOCK() are held. 735 */ 736static __inline struct in6_multi * 737in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr) 738{ 739 struct in6_multi *inm; 740 741 IN6_MULTI_LOCK(); 742 IF_ADDR_RLOCK(ifp); 743 inm = in6m_lookup_locked(ifp, mcaddr); 744 IF_ADDR_RUNLOCK(ifp); 745 IN6_MULTI_UNLOCK(); 746 747 return (inm); 748} 749 750/* Acquire an in6_multi record. */ 751static __inline void 752in6m_acquire_locked(struct in6_multi *inm) 753{ 754 755 IN6_MULTI_LOCK_ASSERT(); 756 ++inm->in6m_refcount; 757} 758 759struct ip6_moptions; 760struct sockopt; 761 762/* Multicast KPIs. */ 763int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *, 764 const struct sockaddr *, const struct sockaddr *); 765int in6_mc_join(struct ifnet *, const struct in6_addr *, 766 struct in6_mfilter *, struct in6_multi **, int); 767int in6_mc_join_locked(struct ifnet *, const struct in6_addr *, 768 struct in6_mfilter *, struct in6_multi **, int); 769int in6_mc_leave(struct in6_multi *, struct in6_mfilter *); 770int in6_mc_leave_locked(struct in6_multi *, struct in6_mfilter *); 771void in6m_clear_recorded(struct in6_multi *); 772void in6m_commit(struct in6_multi *); 773void in6m_print(const struct in6_multi *); 774int in6m_record_source(struct in6_multi *, const struct in6_addr *); 775void in6m_release_locked(struct in6_multi *); 776void ip6_freemoptions(struct ip6_moptions *); 777int ip6_getmoptions(struct inpcb *, struct sockopt *); 778int ip6_setmoptions(struct inpcb *, struct sockopt *); 779 780/* Legacy KAME multicast KPIs. */ 781struct in6_multi_mship * 782 in6_joingroup(struct ifnet *, struct in6_addr *, int *, int); 783int in6_leavegroup(struct in6_multi_mship *); 784 785/* flags to in6_update_ifa */ 786#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */ 787 788int in6_mask2len(struct in6_addr *, u_char *); 789int in6_control(struct socket *, u_long, caddr_t, struct ifnet *, 790 struct thread *); 791int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, 792 struct in6_ifaddr *, int); 793void in6_purgeaddr(struct ifaddr *); 794int in6if_do_dad(struct ifnet *); 795void in6_purgeif(struct ifnet *); 796void in6_savemkludge(struct in6_ifaddr *); 797void *in6_domifattach(struct ifnet *); 798void in6_domifdetach(struct ifnet *, void *); 799void in6_setmaxmtu(void); 800int in6_if2idlen(struct ifnet *); 801struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 802struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *); 803struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 804char *ip6_sprintf(char *, const struct in6_addr *); 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 *); 814void in6_ifremloop(struct ifaddr *); 815void in6_ifaddloop(struct ifaddr *); 816 817int in6_is_addr_deprecated(struct sockaddr_in6 *); 818int in6_src_ioctl(u_long, caddr_t); 819 820/* 821 * Extended API for IPv6 FIB support. 822 */ 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