1/* $NetBSD: in6_var.h,v 1.108 2025/06/27 21:36:23 andvar Exp $ */
2/* $KAME: in6_var.h,v 1.81 2002/06/08 11:16:51 itojun Exp $ */
3
4/*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1985, 1986, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)in_var.h 8.1 (Berkeley) 6/10/93
62 */
63
64#ifndef _NETINET6_IN6_VAR_H_
65#define _NETINET6_IN6_VAR_H_
66
67#include <sys/callout.h>
68#include <sys/ioccom.h>
69
70/*
71 * Interface address, Internet version. One of these structures
72 * is allocated for each interface with an Internet address.
73 * The ifaddr structure contains the protocol-independent part
74 * of the structure and is assumed to be first.
75 */
76
77/*
78 * pltime/vltime are just for future reference (required to implements 2
79 * hour rule for hosts). they should never be modified by nd6_timeout or
80 * anywhere else.
81 * userland -> kernel: accept pltime/vltime
82 * kernel -> userland: throw up everything
83 * in kernel: modify preferred/expire only
84 */
85struct in6_addrlifetime {
86 time_t ia6t_expire; /* valid lifetime expiration time */
87 time_t ia6t_preferred; /* preferred lifetime expiration time */
88 u_int32_t ia6t_vltime; /* valid lifetime */
89 u_int32_t ia6t_pltime; /* prefix lifetime */
90};
91
92struct lltable;
93struct nd_kifinfo;
94struct in6_ifextra {
95 struct in6_ifstat *in6_ifstat;
96 struct icmp6_ifstat *icmp6_ifstat;
97 struct nd_kifinfo *nd_ifinfo;
98 struct scope6_id *scope6_id;
99 struct lltable *lltable;
100};
101
102LIST_HEAD(in6_multihead, in6_multi);
103struct in6_ifaddr {
104 struct ifaddr ia_ifa; /* protocol-independent info */
105#define ia_ifp ia_ifa.ifa_ifp
106#define ia_flags ia_ifa.ifa_flags
107 struct sockaddr_in6 ia_addr; /* interface address */
108 struct sockaddr_in6 ia_net; /* network number of interface */
109 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
110 struct sockaddr_in6 ia_prefixmask; /* prefix mask */
111 u_int32_t ia_plen; /* prefix length */
112 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */
113 struct in6_ifaddr *ia_next; /* next in6 list of IP6 addresses */
114 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */
115 struct in6_multihead _ia6_multiaddrs;
116 /* list of multicast addresses */
117 int ia6_flags;
118
119 struct in6_addrlifetime ia6_lifetime;
120 time_t ia6_createtime; /* the creation time of this address, which is
121 * currently used for temporary addresses only.
122 */
123 time_t ia6_updatetime;
124
125 /* multicast addresses joined from the kernel */
126 LIST_HEAD(, in6_multi_mship) ia6_memberships;
127
128#ifdef _KERNEL
129 struct pslist_entry ia6_pslist_entry;
130#endif
131};
132
133#ifdef _KERNEL
134static __inline void
135ia6_acquire(struct in6_ifaddr *ia, struct psref *psref)
136{
137
138 KASSERT(ia != NULL);
139 ifa_acquire(&ia->ia_ifa, psref);
140}
141
142static __inline void
143ia6_release(struct in6_ifaddr *ia, struct psref *psref)
144{
145
146 if (ia == NULL)
147 return;
148 ifa_release(&ia->ia_ifa, psref);
149}
150#endif
151
152/* control structure to manage address selection policy */
153struct in6_addrpolicy {
154 struct sockaddr_in6 addr; /* prefix address */
155 struct sockaddr_in6 addrmask; /* prefix mask */
156 int preced; /* precedence */
157 int label; /* matching label */
158 u_quad_t use; /* statistics */
159};
160
161/*
162 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
163 */
164struct in6_ifstat {
165 u_quad_t ifs6_in_receive; /* # of total input datagram */
166 u_quad_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */
167 u_quad_t ifs6_in_toobig; /* # of datagrams exceeded MTU */
168 u_quad_t ifs6_in_noroute; /* # of datagrams with no route */
169 u_quad_t ifs6_in_addrerr; /* # of datagrams with invalid dst */
170 u_quad_t ifs6_in_protounknown; /* # of datagrams with unknown proto */
171 /* NOTE: increment on final dst if */
172 u_quad_t ifs6_in_truncated; /* # of truncated datagrams */
173 u_quad_t ifs6_in_discard; /* # of discarded datagrams */
174 /* NOTE: fragment timeout is not here */
175 u_quad_t ifs6_in_deliver; /* # of datagrams delivered to ULP */
176 /* NOTE: increment on final dst if */
177 u_quad_t ifs6_out_forward; /* # of datagrams forwarded */
178 /* NOTE: increment on outgoing if */
179 u_quad_t ifs6_out_request; /* # of outgoing datagrams from ULP */
180 /* NOTE: does not include forwards */
181 u_quad_t ifs6_out_discard; /* # of discarded datagrams */
182 u_quad_t ifs6_out_fragok; /* # of datagrams fragmented */
183 u_quad_t ifs6_out_fragfail; /* # of datagrams failed on fragment */
184 u_quad_t ifs6_out_fragcreat; /* # of fragment datagrams */
185 /* NOTE: this is # after fragment */
186 u_quad_t ifs6_reass_reqd; /* # of incoming fragmented packets */
187 /* NOTE: increment on final dst if */
188 u_quad_t ifs6_reass_ok; /* # of reassembled packets */
189 /* NOTE: this is # after reass */
190 /* NOTE: increment on final dst if */
191 u_quad_t ifs6_reass_fail; /* # of reass failures */
192 /* NOTE: may not be packet count */
193 /* NOTE: increment on final dst if */
194 u_quad_t ifs6_in_mcast; /* # of inbound multicast datagrams */
195 u_quad_t ifs6_out_mcast; /* # of outbound multicast datagrams */
196};
197
198/*
199 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
200 * XXX: I'm not sure if this file is the right place for this structure...
201 */
202struct icmp6_ifstat {
203 /*
204 * Input statistics
205 */
206 /* ipv6IfIcmpInMsgs, total # of input messages */
207 u_quad_t ifs6_in_msg;
208 /* ipv6IfIcmpInErrors, # of input error messages */
209 u_quad_t ifs6_in_error;
210 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
211 u_quad_t ifs6_in_dstunreach;
212 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
213 u_quad_t ifs6_in_adminprohib;
214 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
215 u_quad_t ifs6_in_timeexceed;
216 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
217 u_quad_t ifs6_in_paramprob;
218 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
219 u_quad_t ifs6_in_pkttoobig;
220 /* ipv6IfIcmpInEchos, # of input echo requests */
221 u_quad_t ifs6_in_echo;
222 /* ipv6IfIcmpInEchoReplies, # of input echo replies */
223 u_quad_t ifs6_in_echoreply;
224 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
225 u_quad_t ifs6_in_routersolicit;
226 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
227 u_quad_t ifs6_in_routeradvert;
228 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
229 u_quad_t ifs6_in_neighborsolicit;
230 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
231 u_quad_t ifs6_in_neighboradvert;
232 /* ipv6IfIcmpInRedirects, # of input redirects */
233 u_quad_t ifs6_in_redirect;
234 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
235 u_quad_t ifs6_in_mldquery;
236 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
237 u_quad_t ifs6_in_mldreport;
238 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
239 u_quad_t ifs6_in_mlddone;
240
241 /*
242 * Output statistics. We should solve unresolved routing problem...
243 */
244 /* ipv6IfIcmpOutMsgs, total # of output messages */
245 u_quad_t ifs6_out_msg;
246 /* ipv6IfIcmpOutErrors, # of output error messages */
247 u_quad_t ifs6_out_error;
248 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
249 u_quad_t ifs6_out_dstunreach;
250 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
251 u_quad_t ifs6_out_adminprohib;
252 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
253 u_quad_t ifs6_out_timeexceed;
254 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
255 u_quad_t ifs6_out_paramprob;
256 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
257 u_quad_t ifs6_out_pkttoobig;
258 /* ipv6IfIcmpOutEchos, # of output echo requests */
259 u_quad_t ifs6_out_echo;
260 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
261 u_quad_t ifs6_out_echoreply;
262 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
263 u_quad_t ifs6_out_routersolicit;
264 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
265 u_quad_t ifs6_out_routeradvert;
266 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
267 u_quad_t ifs6_out_neighborsolicit;
268 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
269 u_quad_t ifs6_out_neighboradvert;
270 /* ipv6IfIcmpOutRedirects, # of output redirects */
271 u_quad_t ifs6_out_redirect;
272 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
273 u_quad_t ifs6_out_mldquery;
274 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
275 u_quad_t ifs6_out_mldreport;
276 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
277 u_quad_t ifs6_out_mlddone;
278};
279
280/*
281 * If you make changes that change the size of in6_ifreq,
282 * make sure you fix compat/netinet6/in6_var.h
283 */
284struct in6_ifreq {
285 char ifr_name[IFNAMSIZ];
286 union {
287 struct sockaddr_in6 ifru_addr;
288 struct sockaddr_in6 ifru_dstaddr;
289 short ifru_flags;
290 int ifru_flags6;
291 int ifru_metric;
292 void * ifru_data;
293 struct in6_addrlifetime ifru_lifetime;
294 struct in6_ifstat ifru_stat;
295 struct icmp6_ifstat ifru_icmp6stat;
296 } ifr_ifru;
297};
298
299struct in6_aliasreq {
300 char ifra_name[IFNAMSIZ];
301 struct sockaddr_in6 ifra_addr;
302 struct sockaddr_in6 ifra_dstaddr;
303 struct sockaddr_in6 ifra_prefixmask;
304 int ifra_flags;
305 struct in6_addrlifetime ifra_lifetime;
306};
307
308/*
309 * Given a pointer to an in6_ifaddr (ifaddr),
310 * return a pointer to the addr as a sockaddr_in6
311 */
312#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr))
313#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr))
314#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
315#define IA6_SIN6(ia) (&((ia)->ia_addr))
316#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
317#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
318#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
319
320#ifdef _KERNEL
321#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
322 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
323 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
324 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
325 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
326#endif
327
328#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq)
329#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq)
330
331#ifdef _KERNEL
332/*
333 * SIOCSxxx ioctls should be unused (see comments in in6.c), but
334 * we do not shift numbers for binary compatibility.
335 */
336#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq)
337#define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq)
338#endif
339
340#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq)
341#define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq)
342
343#define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq)
344/* 26 was OSIOCAIFADDR_IN6 */
345
346/* 70 was OSIOCSIFPHYADDR_IN6 */
347#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq)
348#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq)
349
350#define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq)
351
352/*
353 * 74 was SIOCGDRLST_IN6
354 * 75 was SIOCGPRLST_IN6
355 * 76 was OSIOCGIFINFO_IN6
356 * 77 was SIOCSNDFLUSH_IN6
357 */
358#define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo)
359/*
360 * 79 was SIOCSPFXFLUSH_IN6
361 * 80 was SIOCSRTRFLUSH_IN6
362 * 81 was SIOCGIFALIFETIME_IN6
363 */
364#if 0
365/* withdrawn - do not reuse number 82 */
366#define SIOCSIFALIFETIME_IN6 _IOWR('i', 82, struct in6_ifreq)
367#endif
368#define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq)
369#define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq)
370
371/*
372 * 85 was SIOCSDEFIFACE_IN6
373 * 86 was SIOCGDEFIFACE_IN6
374 * 87 was OSIOCSIFINFO_FLAGS
375 * 100 was SIOCSIFPREFIX_IN6
376 * 101 was SIOCGIFPREFIX_IN6
377 * 102 was SIOCDIFPREFIX_IN6
378 * 103 was SIOCAIFPREFIX_IN6
379 * 104 was SIOCCIFPREFIX_IN6
380 * 105 was SIOCSGIFPREFIX_IN6
381 */
382#define SIOCGIFALIFETIME_IN6 _IOWR('i', 106, struct in6_ifreq)
383#define SIOCAIFADDR_IN6 _IOW('i', 107, struct in6_aliasreq)
384/* 108 was OSIOCGIFINFO_IN6_90
385 * 109 was OSIOCSIFINFO_IN6_90 */
386#define SIOCSIFPHYADDR_IN6 _IOW('i', 110, struct in6_aliasreq)
387/* 110 - 112 are defined in net/if_pppoe.h */
388#define SIOCGIFINFO_IN6 _IOWR('i', 113, struct in6_ndireq)
389#define SIOCSIFINFO_IN6 _IOWR('i', 114, struct in6_ndireq)
390#define SIOCSIFINFO_FLAGS _IOWR('i', 115, struct in6_ndireq)
391
392/* XXX: Someone decided to switch to 'u' here for unknown reasons! */
393#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \
394 struct sioc_sg_req6) /* get s,g pkt cnt */
395#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \
396 struct sioc_mif_req6) /* get pkt cnt per if */
397#define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy)
398#define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy)
399
400#define IN6_IFF_ANYCAST 0x01 /* anycast address */
401#define IN6_IFF_TENTATIVE 0x02 /* tentative address */
402#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */
403#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */
404#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */
405#define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address
406 * (used only at first SIOC* call)
407 */
408#define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */
409#define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */
410
411#define IN6_IFFBITS \
412 "\020\1ANYCAST\2TENTATIVE\3DUPLICATED\4DETACHED\5DEPRECATED\6NODAD" \
413 "\7AUTOCONF\10TEMPORARY"
414
415
416/* do not input/output */
417#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
418
419#ifdef _KERNEL
420#define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
421#define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
422#endif
423
424#ifdef _KERNEL
425
426#include <sys/mutex.h>
427#include <sys/pserialize.h>
428
429#include <net/pktqueue.h>
430
431extern pktqueue_t *ip6_pktq;
432
433MALLOC_DECLARE(M_IP6OPT);
434
435extern struct pslist_head in6_ifaddr_list;
436extern kmutex_t in6_ifaddr_lock;
437
438#define IN6_ADDRLIST_ENTRY_INIT(__ia) \
439 PSLIST_ENTRY_INIT((__ia), ia6_pslist_entry)
440#define IN6_ADDRLIST_ENTRY_DESTROY(__ia) \
441 PSLIST_ENTRY_DESTROY((__ia), ia6_pslist_entry)
442#define IN6_ADDRLIST_READER_EMPTY() \
443 (PSLIST_READER_FIRST(&in6_ifaddr_list, struct in6_ifaddr, \
444 ia6_pslist_entry) == NULL)
445#define IN6_ADDRLIST_READER_FIRST() \
446 PSLIST_READER_FIRST(&in6_ifaddr_list, struct in6_ifaddr, \
447 ia6_pslist_entry)
448#define IN6_ADDRLIST_READER_NEXT(__ia) \
449 PSLIST_READER_NEXT((__ia), struct in6_ifaddr, ia6_pslist_entry)
450#define IN6_ADDRLIST_READER_FOREACH(__ia) \
451 PSLIST_READER_FOREACH((__ia), &in6_ifaddr_list, \
452 struct in6_ifaddr, ia6_pslist_entry)
453#define IN6_ADDRLIST_WRITER_INSERT_HEAD(__ia) \
454 PSLIST_WRITER_INSERT_HEAD(&in6_ifaddr_list, (__ia), ia6_pslist_entry)
455#define IN6_ADDRLIST_WRITER_REMOVE(__ia) \
456 PSLIST_WRITER_REMOVE((__ia), ia6_pslist_entry)
457#define IN6_ADDRLIST_WRITER_FOREACH(__ia) \
458 PSLIST_WRITER_FOREACH((__ia), &in6_ifaddr_list, struct in6_ifaddr, \
459 ia6_pslist_entry)
460#define IN6_ADDRLIST_WRITER_FIRST() \
461 PSLIST_WRITER_FIRST(&in6_ifaddr_list, struct in6_ifaddr, \
462 ia6_pslist_entry)
463#define IN6_ADDRLIST_WRITER_NEXT(__ia) \
464 PSLIST_WRITER_NEXT((__ia), struct in6_ifaddr, ia6_pslist_entry)
465#define IN6_ADDRLIST_WRITER_INSERT_AFTER(__ia, __new) \
466 PSLIST_WRITER_INSERT_AFTER((__ia), (__new), ia6_pslist_entry)
467#define IN6_ADDRLIST_WRITER_EMPTY() \
468 (PSLIST_WRITER_FIRST(&in6_ifaddr_list, struct in6_ifaddr, \
469 ia6_pslist_entry) == NULL)
470#define IN6_ADDRLIST_WRITER_INSERT_TAIL(__new) \
471 do { \
472 if (IN6_ADDRLIST_WRITER_EMPTY()) { \
473 IN6_ADDRLIST_WRITER_INSERT_HEAD((__new)); \
474 } else { \
475 struct in6_ifaddr *__ia; \
476 IN6_ADDRLIST_WRITER_FOREACH(__ia) { \
477 if (IN6_ADDRLIST_WRITER_NEXT(__ia) == NULL) { \
478 IN6_ADDRLIST_WRITER_INSERT_AFTER(__ia,\
479 (__new)); \
480 break; \
481 } \
482 } \
483 } \
484 } while (0)
485
486#define in6_ifstat_inc(ifp, tag) \
487do { \
488 if (ifp) \
489 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->in6_ifstat->tag++; \
490} while (/*CONSTCOND*/ 0)
491
492extern const struct in6_addr zeroin6_addr;
493extern const u_char inet6ctlerrmap[];
494extern bool in6_present;
495#endif /* _KERNEL */
496
497/*
498 * Multi-cast membership entry. One for each group/ifp that a PCB
499 * belongs to.
500 */
501struct in6_multi_mship {
502 struct in6_multi *i6mm_maddr; /* Multicast address pointer */
503 LIST_ENTRY(in6_multi_mship) i6mm_chain; /* multicast options chain */
504};
505
506struct in6_multi {
507 LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
508 struct in6_addr in6m_addr; /* IP6 multicast address */
509 struct ifnet *in6m_ifp; /* back pointer to ifnet */
510 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */
511 struct in6_ifaddr *_in6m_ia; /* back pointer to in6_ifaddr */
512 u_int in6m_refcount; /* # membership claims by sockets */
513 u_int in6m_state; /* state of the membership */
514 int in6m_timer; /* delay to send the 1st report */
515 struct timeval in6m_timer_expire; /* when the timer expires */
516 callout_t in6m_timer_ch;
517};
518
519#define IN6M_TIMER_UNDEF -1
520
521
522#ifdef _KERNEL
523/* flags to in6_update_ifa */
524#define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */
525
526#if 0
527/*
528 * Macros for looking up the in6_multi_mship record for a given IP6 multicast
529 * address on a given interface. If no matching record is found, "imm"
530 * returns NULL.
531 */
532static __inline struct in6_multi_mship *
533in6_lookup_mship(struct in6_addr *addr, struct ifnet *ifp,
534 struct ip6_moptions *imop)
535{
536 struct in6_multi_mship *imm;
537
538 LIST_FOREACH(imm, &imop->im6o_memberships, i6mm_chain) {
539 if (imm->i6mm_maddr->in6m_ifp != ifp)
540 continue;
541 if (IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
542 addr))
543 break;
544 }
545 return imm;
546}
547
548#define IN6_LOOKUP_MSHIP(__addr, __ifp, __imop, __imm) \
549/* struct in6_addr __addr; */ \
550/* struct ifnet *__ifp; */ \
551/* struct ip6_moptions *__imop */ \
552/* struct in6_multi_mship *__imm; */ \
553do { \
554 (__imm) = in6_lookup_mship(&(__addr), (__ifp), (__imop)); \
555} while (/*CONSTCOND*/ 0)
556#endif
557
558void in6_init(void);
559
560void in6_multi_lock(int);
561void in6_multi_unlock(void);
562bool in6_multi_locked(int);
563struct in6_multi *
564 in6_lookup_multi(const struct in6_addr *, const struct ifnet *);
565bool in6_multi_group(const struct in6_addr *, const struct ifnet *);
566void in6_purge_multi(struct ifnet *);
567struct in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *,
568 int *, int);
569void in6_delmulti(struct in6_multi *);
570void in6_delmulti_locked(struct in6_multi *);
571void in6_lookup_and_delete_multi(const struct in6_addr *,
572 const struct ifnet *);
573struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *,
574 int *, int);
575int in6_leavegroup(struct in6_multi_mship *);
576int in6_mask2len(struct in6_addr *, u_char *);
577int in6_control(struct socket *, u_long, void *, struct ifnet *);
578int in6_update_ifa(struct ifnet *, struct in6_aliasreq *, int);
579void in6_purgeaddr(struct ifaddr *);
580void in6_purgeif(struct ifnet *);
581void *in6_domifattach(struct ifnet *);
582void in6_domifdetach(struct ifnet *, void *);
583void in6_ifremlocal(struct ifaddr *);
584void in6_ifaddlocal(struct ifaddr *);
585struct in6_ifaddr *
586 in6ifa_ifpforlinklocal(const struct ifnet *, int);
587struct in6_ifaddr *
588 in6ifa_ifpforlinklocal_psref(const struct ifnet *, int, struct psref *);
589struct in6_ifaddr *
590 in6ifa_ifpwithaddr(const struct ifnet *, const struct in6_addr *);
591struct in6_ifaddr *
592 in6ifa_ifpwithaddr_psref(const struct ifnet *, const struct in6_addr *,
593 struct psref *);
594struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t);
595struct ifaddr *
596 in6ifa_first_lladdr(const struct ifnet *);
597struct ifaddr *
598 in6ifa_first_lladdr_psref(const struct ifnet *, struct psref *);
599
600int in6_matchlen(struct in6_addr *, struct in6_addr *);
601void in6_prefixlen2mask(struct in6_addr *, int);
602void in6_purge_mcast_references(struct in6_multi *);
603
604int ip6flow_fastforward(struct mbuf **); /* IPv6 fast forward routine */
605
606int in6_src_ioctl(u_long, void *);
607int in6_is_addr_deprecated(struct sockaddr_in6 *);
608struct in6pcb;
609
610#define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable)
611
612void in6_sysctl_multicast_setup(struct sysctllog **);
613
614#endif /* _KERNEL */
615
616#endif /* !_NETINET6_IN6_VAR_H_ */