in6_var.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 itojun Exp $ 32 */ 33 34/*- 35 * Copyright (c) 1985, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)in_var.h 8.1 (Berkeley) 6/10/93 63 * $FreeBSD: stable/11/sys/netinet6/in6_var.h 330897 2018-03-14 03:19:51Z eadler $ 64 */ 65 66#ifndef _NETINET6_IN6_VAR_H_ 67#define _NETINET6_IN6_VAR_H_ 68 69#include <sys/tree.h> 70#include <sys/counter.h> 71 72#ifdef _KERNEL 73#include <sys/fnv_hash.h> 74#include <sys/libkern.h> 75#endif 76 77/* 78 * Interface address, Internet version. One of these structures 79 * is allocated for each interface with an Internet address. 80 * The ifaddr structure contains the protocol-independent part 81 * of the structure and is assumed to be first. 82 */ 83 84/* 85 * pltime/vltime are just for future reference (required to implements 2 86 * hour rule for hosts). they should never be modified by nd6_timeout or 87 * anywhere else. 88 * userland -> kernel: accept pltime/vltime 89 * kernel -> userland: throw up everything 90 * in kernel: modify preferred/expire only 91 */ 92struct in6_addrlifetime { 93 time_t ia6t_expire; /* valid lifetime expiration time */ 94 time_t ia6t_preferred; /* preferred lifetime expiration time */ 95 u_int32_t ia6t_vltime; /* valid lifetime */ 96 u_int32_t ia6t_pltime; /* prefix lifetime */ 97}; 98 99struct nd_ifinfo; 100struct scope6_id; 101struct lltable; 102struct mld_ifsoftc; 103 104struct in6_ifextra { 105 counter_u64_t *in6_ifstat; 106 counter_u64_t *icmp6_ifstat; 107 struct nd_ifinfo *nd_ifinfo; 108 struct scope6_id *scope6_id; 109 struct lltable *lltable; 110 struct mld_ifsoftc *mld_ifinfo; 111}; 112 113#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable) 114 115#ifdef _KERNEL 116struct in6_ifaddr { 117 struct ifaddr ia_ifa; /* protocol-independent info */ 118#define ia_ifp ia_ifa.ifa_ifp 119#define ia_flags ia_ifa.ifa_flags 120 struct sockaddr_in6 ia_addr; /* interface address */ 121 struct sockaddr_in6 ia_net; /* network number of interface */ 122 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */ 123 struct sockaddr_in6 ia_prefixmask; /* prefix mask */ 124 u_int32_t ia_plen; /* prefix length */ 125 TAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */ 126 int ia6_flags; 127 128 struct in6_addrlifetime ia6_lifetime; 129 time_t ia6_createtime; /* the creation time of this address, which is 130 * currently used for temporary addresses only. 131 */ 132 time_t ia6_updatetime; 133 134 /* back pointer to the ND prefix (for autoconfigured addresses only) */ 135 struct nd_prefix *ia6_ndpr; 136 137 /* multicast addresses joined from the kernel */ 138 LIST_HEAD(, in6_multi_mship) ia6_memberships; 139 /* entry in bucket of inet6 addresses */ 140 LIST_ENTRY(in6_ifaddr) ia6_hash; 141}; 142 143/* List of in6_ifaddr's. */ 144TAILQ_HEAD(in6_ifaddrhead, in6_ifaddr); 145LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr); 146#endif /* _KERNEL */ 147 148/* control structure to manage address selection policy */ 149struct in6_addrpolicy { 150 struct sockaddr_in6 addr; /* prefix address */ 151 struct sockaddr_in6 addrmask; /* prefix mask */ 152 int preced; /* precedence */ 153 int label; /* matching label */ 154 u_quad_t use; /* statistics */ 155}; 156 157/* 158 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12). 159 */ 160struct in6_ifstat { 161 uint64_t ifs6_in_receive; /* # of total input datagram */ 162 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */ 163 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */ 164 uint64_t ifs6_in_noroute; /* # of datagrams with no route */ 165 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */ 166 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */ 167 /* NOTE: increment on final dst if */ 168 uint64_t ifs6_in_truncated; /* # of truncated datagrams */ 169 uint64_t ifs6_in_discard; /* # of discarded datagrams */ 170 /* NOTE: fragment timeout is not here */ 171 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */ 172 /* NOTE: increment on final dst if */ 173 uint64_t ifs6_out_forward; /* # of datagrams forwarded */ 174 /* NOTE: increment on outgoing if */ 175 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */ 176 /* NOTE: does not include forwrads */ 177 uint64_t ifs6_out_discard; /* # of discarded datagrams */ 178 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */ 179 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */ 180 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */ 181 /* NOTE: this is # after fragment */ 182 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */ 183 /* NOTE: increment on final dst if */ 184 uint64_t ifs6_reass_ok; /* # of reassembled packets */ 185 /* NOTE: this is # after reass */ 186 /* NOTE: increment on final dst if */ 187 uint64_t ifs6_reass_fail; /* # of reass failures */ 188 /* NOTE: may not be packet count */ 189 /* NOTE: increment on final dst if */ 190 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */ 191 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */ 192}; 193 194/* 195 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry. 196 * XXX: I'm not sure if this file is the right place for this structure... 197 */ 198struct icmp6_ifstat { 199 /* 200 * Input statistics 201 */ 202 /* ipv6IfIcmpInMsgs, total # of input messages */ 203 uint64_t ifs6_in_msg; 204 /* ipv6IfIcmpInErrors, # of input error messages */ 205 uint64_t ifs6_in_error; 206 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */ 207 uint64_t ifs6_in_dstunreach; 208 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */ 209 uint64_t ifs6_in_adminprohib; 210 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */ 211 uint64_t ifs6_in_timeexceed; 212 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */ 213 uint64_t ifs6_in_paramprob; 214 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */ 215 uint64_t ifs6_in_pkttoobig; 216 /* ipv6IfIcmpInEchos, # of input echo requests */ 217 uint64_t ifs6_in_echo; 218 /* ipv6IfIcmpInEchoReplies, # of input echo replies */ 219 uint64_t ifs6_in_echoreply; 220 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */ 221 uint64_t ifs6_in_routersolicit; 222 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */ 223 uint64_t ifs6_in_routeradvert; 224 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */ 225 uint64_t ifs6_in_neighborsolicit; 226 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */ 227 uint64_t ifs6_in_neighboradvert; 228 /* ipv6IfIcmpInRedirects, # of input redirects */ 229 uint64_t ifs6_in_redirect; 230 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */ 231 uint64_t ifs6_in_mldquery; 232 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */ 233 uint64_t ifs6_in_mldreport; 234 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */ 235 uint64_t ifs6_in_mlddone; 236 237 /* 238 * Output statistics. We should solve unresolved routing problem... 239 */ 240 /* ipv6IfIcmpOutMsgs, total # of output messages */ 241 uint64_t ifs6_out_msg; 242 /* ipv6IfIcmpOutErrors, # of output error messages */ 243 uint64_t ifs6_out_error; 244 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */ 245 uint64_t ifs6_out_dstunreach; 246 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */ 247 uint64_t ifs6_out_adminprohib; 248 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */ 249 uint64_t ifs6_out_timeexceed; 250 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */ 251 uint64_t ifs6_out_paramprob; 252 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */ 253 uint64_t ifs6_out_pkttoobig; 254 /* ipv6IfIcmpOutEchos, # of output echo requests */ 255 uint64_t ifs6_out_echo; 256 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */ 257 uint64_t ifs6_out_echoreply; 258 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */ 259 uint64_t ifs6_out_routersolicit; 260 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */ 261 uint64_t ifs6_out_routeradvert; 262 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */ 263 uint64_t ifs6_out_neighborsolicit; 264 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */ 265 uint64_t ifs6_out_neighboradvert; 266 /* ipv6IfIcmpOutRedirects, # of output redirects */ 267 uint64_t ifs6_out_redirect; 268 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */ 269 uint64_t ifs6_out_mldquery; 270 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */ 271 uint64_t ifs6_out_mldreport; 272 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */ 273 uint64_t ifs6_out_mlddone; 274}; 275 276struct in6_ifreq { 277 char ifr_name[IFNAMSIZ]; 278 union { 279 struct sockaddr_in6 ifru_addr; 280 struct sockaddr_in6 ifru_dstaddr; 281 int ifru_flags; 282 int ifru_flags6; 283 int ifru_metric; 284 caddr_t ifru_data; 285 struct in6_addrlifetime ifru_lifetime; 286 struct in6_ifstat ifru_stat; 287 struct icmp6_ifstat ifru_icmp6stat; 288 u_int32_t ifru_scope_id[16]; 289 } ifr_ifru; 290}; 291 292struct in6_aliasreq { 293 char ifra_name[IFNAMSIZ]; 294 struct sockaddr_in6 ifra_addr; 295 struct sockaddr_in6 ifra_dstaddr; 296 struct sockaddr_in6 ifra_prefixmask; 297 int ifra_flags; 298 struct in6_addrlifetime ifra_lifetime; 299 int ifra_vhid; 300}; 301 302/* pre-10.x compat */ 303struct oin6_aliasreq { 304 char ifra_name[IFNAMSIZ]; 305 struct sockaddr_in6 ifra_addr; 306 struct sockaddr_in6 ifra_dstaddr; 307 struct sockaddr_in6 ifra_prefixmask; 308 int ifra_flags; 309 struct in6_addrlifetime ifra_lifetime; 310}; 311 312/* prefix type macro */ 313#define IN6_PREFIX_ND 1 314#define IN6_PREFIX_RR 2 315 316/* 317 * prefix related flags passed between kernel(NDP related part) and 318 * user land command(ifconfig) and daemon(rtadvd). 319 */ 320struct in6_prflags { 321 struct prf_ra { 322 u_char onlink : 1; 323 u_char autonomous : 1; 324 u_char reserved : 6; 325 } prf_ra; 326 u_char prf_reserved1; 327 u_short prf_reserved2; 328 /* want to put this on 4byte offset */ 329 struct prf_rr { 330 u_char decrvalid : 1; 331 u_char decrprefd : 1; 332 u_char reserved : 6; 333 } prf_rr; 334 u_char prf_reserved3; 335 u_short prf_reserved4; 336}; 337 338struct in6_prefixreq { 339 char ipr_name[IFNAMSIZ]; 340 u_char ipr_origin; 341 u_char ipr_plen; 342 u_int32_t ipr_vltime; 343 u_int32_t ipr_pltime; 344 struct in6_prflags ipr_flags; 345 struct sockaddr_in6 ipr_prefix; 346}; 347 348#define PR_ORIG_RA 0 349#define PR_ORIG_RR 1 350#define PR_ORIG_STATIC 2 351#define PR_ORIG_KERNEL 3 352 353#define ipr_raf_onlink ipr_flags.prf_ra.onlink 354#define ipr_raf_auto ipr_flags.prf_ra.autonomous 355 356#define ipr_statef_onlink ipr_flags.prf_state.onlink 357 358#define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid 359#define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd 360 361struct in6_rrenumreq { 362 char irr_name[IFNAMSIZ]; 363 u_char irr_origin; 364 u_char irr_m_len; /* match len for matchprefix */ 365 u_char irr_m_minlen; /* minlen for matching prefix */ 366 u_char irr_m_maxlen; /* maxlen for matching prefix */ 367 u_char irr_u_uselen; /* uselen for adding prefix */ 368 u_char irr_u_keeplen; /* keeplen from matching prefix */ 369 struct irr_raflagmask { 370 u_char onlink : 1; 371 u_char autonomous : 1; 372 u_char reserved : 6; 373 } irr_raflagmask; 374 u_int32_t irr_vltime; 375 u_int32_t irr_pltime; 376 struct in6_prflags irr_flags; 377 struct sockaddr_in6 irr_matchprefix; 378 struct sockaddr_in6 irr_useprefix; 379}; 380 381#define irr_raf_mask_onlink irr_raflagmask.onlink 382#define irr_raf_mask_auto irr_raflagmask.autonomous 383#define irr_raf_mask_reserved irr_raflagmask.reserved 384 385#define irr_raf_onlink irr_flags.prf_ra.onlink 386#define irr_raf_auto irr_flags.prf_ra.autonomous 387 388#define irr_statef_onlink irr_flags.prf_state.onlink 389 390#define irr_rrf irr_flags.prf_rr 391#define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid 392#define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd 393 394/* 395 * Given a pointer to an in6_ifaddr (ifaddr), 396 * return a pointer to the addr as a sockaddr_in6 397 */ 398#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr)) 399#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr)) 400#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr)) 401#define IA6_SIN6(ia) (&((ia)->ia_addr)) 402#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr)) 403#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr) 404#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr) 405 406#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr) 407 408#ifdef _KERNEL 409#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \ 410 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \ 411 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \ 412 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \ 413 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 ) 414#define IN6_MASK_ADDR(a, m) do { \ 415 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \ 416 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \ 417 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \ 418 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \ 419} while (0) 420#endif 421 422#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq) 423#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq) 424 425#ifdef _KERNEL 426/* 427 * SIOCSxxx ioctls should be unused (see comments in in6.c), but 428 * we do not shift numbers for binary compatibility. 429 */ 430#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq) 431#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq) 432#endif 433 434#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq) 435#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq) 436 437#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq) 438#define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq) 439#define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq) 440 441#define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq) 442#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq) 443#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq) 444 445#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq) 446 447#ifdef _KERNEL 448#define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq) 449#endif 450#define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq) 451#define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq) 452#define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq) 453#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo) 454#define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq) 455#define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq) 456 457#define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq) 458#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq) 459#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq) 460 461#define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq) 462#define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq) 463 464#define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */ 465 466#define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq) 467#define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq) 468#define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq) 469 470#define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */ 471#define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */ 472#define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */ 473#define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */ 474#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \ 475 struct in6_rrenumreq) /* change */ 476#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \ 477 struct in6_rrenumreq) /* set global */ 478 479#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \ 480 struct sioc_sg_req6) /* get s,g pkt cnt */ 481#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \ 482 struct sioc_mif_req6) /* get pkt cnt per if */ 483 484#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy) 485#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy) 486 487#define IN6_IFF_ANYCAST 0x01 /* anycast address */ 488#define IN6_IFF_TENTATIVE 0x02 /* tentative address */ 489#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */ 490#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */ 491#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */ 492#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address 493 * (obsolete) 494 */ 495#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */ 496#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */ 497#define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */ 498 499/* do not input/output */ 500#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED) 501 502#ifdef _KERNEL 503#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b)) 504#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b)) 505#endif 506 507#ifdef _KERNEL 508VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead); 509VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); 510VNET_DECLARE(u_long, in6_ifaddrhmask); 511#define V_in6_ifaddrhead VNET(in6_ifaddrhead) 512#define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl) 513#define V_in6_ifaddrhmask VNET(in6_ifaddrhmask) 514 515#define IN6ADDR_NHASH_LOG2 8 516#define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2) 517#define IN6ADDR_HASHVAL(x) (in6_addrhash(x)) 518#define IN6ADDR_HASH(x) \ 519 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask]) 520 521static __inline uint32_t 522in6_addrhash(const struct in6_addr *in6) 523{ 524 uint32_t x; 525 526 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^ 527 in6->s6_addr32[3]; 528 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT)); 529} 530 531extern struct rmlock in6_ifaddr_lock; 532#define IN6_IFADDR_LOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_LOCKED) 533#define IN6_IFADDR_RLOCK(t) rm_rlock(&in6_ifaddr_lock, (t)) 534#define IN6_IFADDR_RLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_RLOCKED) 535#define IN6_IFADDR_RUNLOCK(t) rm_runlock(&in6_ifaddr_lock, (t)) 536#define IN6_IFADDR_WLOCK() rm_wlock(&in6_ifaddr_lock) 537#define IN6_IFADDR_WLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_WLOCKED) 538#define IN6_IFADDR_WUNLOCK() rm_wunlock(&in6_ifaddr_lock) 539 540#define in6_ifstat_inc(ifp, tag) \ 541do { \ 542 if (ifp) \ 543 counter_u64_add(((struct in6_ifextra *) \ 544 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \ 545 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\ 546} while (/*CONSTCOND*/ 0) 547 548extern u_char inet6ctlerrmap[]; 549VNET_DECLARE(unsigned long, in6_maxmtu); 550#define V_in6_maxmtu VNET(in6_maxmtu) 551#endif /* _KERNEL */ 552 553/* 554 * IPv6 multicast MLD-layer source entry. 555 */ 556struct ip6_msource { 557 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */ 558 struct in6_addr im6s_addr; 559 struct im6s_st { 560 uint16_t ex; /* # of exclusive members */ 561 uint16_t in; /* # of inclusive members */ 562 } im6s_st[2]; /* state at t0, t1 */ 563 uint8_t im6s_stp; /* pending query */ 564}; 565RB_HEAD(ip6_msource_tree, ip6_msource); 566 567/* 568 * IPv6 multicast PCB-layer source entry. 569 * 570 * NOTE: overlapping use of struct ip6_msource fields at start. 571 */ 572struct in6_msource { 573 RB_ENTRY(ip6_msource) im6s_link; /* Common field */ 574 struct in6_addr im6s_addr; /* Common field */ 575 uint8_t im6sl_st[2]; /* state before/at commit */ 576}; 577 578#ifdef _KERNEL 579/* 580 * IPv6 source tree comparison function. 581 * 582 * An ordered predicate is necessary; bcmp() is not documented to return 583 * an indication of order, memcmp() is, and is an ISO C99 requirement. 584 */ 585static __inline int 586ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b) 587{ 588 589 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr))); 590} 591RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp); 592 593/* 594 * IPv6 multicast PCB-layer group filter descriptor. 595 */ 596struct in6_mfilter { 597 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */ 598 u_long im6f_nsrc; /* # of source entries */ 599 uint8_t im6f_st[2]; /* state before/at commit */ 600}; 601 602/* 603 * Legacy KAME IPv6 multicast membership descriptor. 604 */ 605struct in6_multi_mship { 606 struct in6_multi *i6mm_maddr; 607 LIST_ENTRY(in6_multi_mship) i6mm_chain; 608}; 609 610/* 611 * IPv6 group descriptor. 612 * 613 * For every entry on an ifnet's if_multiaddrs list which represents 614 * an IP multicast group, there is one of these structures. 615 * 616 * If any source filters are present, then a node will exist in the RB-tree 617 * to permit fast lookup by source whenever an operation takes place. 618 * This permits pre-order traversal when we issue reports. 619 * Source filter trees are kept separately from the socket layer to 620 * greatly simplify locking. 621 * 622 * When MLDv2 is active, in6m_timer is the response to group query timer. 623 * The state-change timer in6m_sctimer is separate; whenever state changes 624 * for the group the state change record is generated and transmitted, 625 * and kept if retransmissions are necessary. 626 * 627 * FUTURE: in6m_link is now only used when groups are being purged 628 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 629 * because it is at the very start of the struct, we can't do this 630 * w/o breaking the ABI for ifmcstat. 631 */ 632struct in6_multi { 633 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */ 634 struct in6_addr in6m_addr; /* IPv6 multicast address */ 635 struct ifnet *in6m_ifp; /* back pointer to ifnet */ 636 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */ 637 u_int in6m_refcount; /* reference count */ 638 u_int in6m_state; /* state of the membership */ 639 u_int in6m_timer; /* MLD6 listener report timer */ 640 641 /* New fields for MLDv2 follow. */ 642 struct mld_ifsoftc *in6m_mli; /* MLD info */ 643 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */ 644 struct ip6_msource_tree in6m_srcs; /* tree of sources */ 645 u_long in6m_nsrc; /* # of tree entries */ 646 647 struct mbufq in6m_scq; /* queue of pending 648 * state-change packets */ 649 struct timeval in6m_lastgsrtv; /* last G-S-R query */ 650 uint16_t in6m_sctimer; /* state-change timer */ 651 uint16_t in6m_scrv; /* state-change rexmit count */ 652 653 /* 654 * SSM state counters which track state at T0 (the time the last 655 * state-change report's RV timer went to zero) and T1 656 * (time of pending report, i.e. now). 657 * Used for computing MLDv2 state-change reports. Several refcounts 658 * are maintained here to optimize for common use-cases. 659 */ 660 struct in6m_st { 661 uint16_t iss_fmode; /* MLD filter mode */ 662 uint16_t iss_asm; /* # of ASM listeners */ 663 uint16_t iss_ex; /* # of exclusive members */ 664 uint16_t iss_in; /* # of inclusive members */ 665 uint16_t iss_rec; /* # of recorded sources */ 666 } in6m_st[2]; /* state at t0, t1 */ 667}; 668 669/* 670 * Helper function to derive the filter mode on a source entry 671 * from its internal counters. Predicates are: 672 * A source is only excluded if all listeners exclude it. 673 * A source is only included if no listeners exclude it, 674 * and at least one listener includes it. 675 * May be used by ifmcstat(8). 676 */ 677static __inline uint8_t 678im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims, 679 uint8_t t) 680{ 681 682 t = !!t; 683 if (inm->in6m_st[t].iss_ex > 0 && 684 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex) 685 return (MCAST_EXCLUDE); 686 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0) 687 return (MCAST_INCLUDE); 688 return (MCAST_UNDEFINED); 689} 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_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *, 794 const struct in6_addr *); 795void in6_purgeaddr(struct ifaddr *); 796int in6if_do_dad(struct ifnet *); 797void in6_savemkludge(struct in6_ifaddr *); 798void *in6_domifattach(struct ifnet *); 799void in6_domifdetach(struct ifnet *, void *); 800int in6_domifmtu(struct ifnet *); 801void in6_setmaxmtu(void); 802int in6_if2idlen(struct ifnet *); 803struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int); 804struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, const struct in6_addr *); 805struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t); 806struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *); 807int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *); 808int in6_matchlen(struct in6_addr *, struct in6_addr *); 809int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int); 810void in6_prefixlen2mask(struct in6_addr *, int); 811int in6_prefix_ioctl(struct socket *, u_long, caddr_t, 812 struct ifnet *); 813int in6_prefix_add_ifid(int, struct in6_ifaddr *); 814void in6_prefix_remove_ifid(int, struct in6_ifaddr *); 815void in6_purgeprefix(struct ifnet *); 816 817int in6_is_addr_deprecated(struct sockaddr_in6 *); 818int in6_src_ioctl(u_long, caddr_t); 819 820void in6_newaddrmsg(struct in6_ifaddr *, int); 821/* 822 * Extended API for IPv6 FIB support. 823 */ 824struct mbuf *ip6_tryforward(struct mbuf *); 825void in6_rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 826 int, struct sockaddr *, u_int); 827int in6_rtrequest(int, struct sockaddr *, struct sockaddr *, 828 struct sockaddr *, int, struct rtentry **, u_int); 829void in6_rtalloc(struct route_in6 *, u_int); 830void in6_rtalloc_ign(struct route_in6 *, u_long, u_int); 831struct rtentry *in6_rtalloc1(struct sockaddr *, int, u_long, u_int); 832#endif /* _KERNEL */ 833 834#endif /* _NETINET6_IN6_VAR_H_ */ 835