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 * 3. 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 * $FreeBSD$
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 */
92 struct 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
99 struct nd_ifinfo;
100 struct scope6_id;
101 struct lltable;
102 struct mld_ifsoftc;
103 struct in6_multi;
104
105 struct in6_ifextra {
106 counter_u64_t *in6_ifstat;
107 counter_u64_t *icmp6_ifstat;
108 struct nd_ifinfo *nd_ifinfo;
109 struct scope6_id *scope6_id;
110 struct lltable *lltable;
111 struct mld_ifsoftc *mld_ifinfo;
112 };
113
114 #define LLTABLE6(ifp) (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->lltable)
115
116 #ifdef _KERNEL
117
118 SLIST_HEAD(in6_multi_head, in6_multi);
119 MALLOC_DECLARE(M_IP6MADDR);
120
121 struct in6_ifaddr {
122 struct ifaddr ia_ifa; /* protocol-independent info */
123 #define ia_ifp ia_ifa.ifa_ifp
124 #define ia_flags ia_ifa.ifa_flags
125 struct sockaddr_in6 ia_addr; /* interface address */
126 struct sockaddr_in6 ia_net; /* network number of interface */
127 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
128 struct sockaddr_in6 ia_prefixmask; /* prefix mask */
129 u_int32_t ia_plen; /* prefix length */
130 CK_STAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */
131 int ia6_flags;
132
133 struct in6_addrlifetime ia6_lifetime;
134 time_t ia6_createtime; /* the creation time of this address, which is
135 * currently used for temporary addresses only.
136 */
137 time_t ia6_updatetime;
138
139 /* back pointer to the ND prefix (for autoconfigured addresses only) */
140 struct nd_prefix *ia6_ndpr;
141
142 /* multicast addresses joined from the kernel */
143 LIST_HEAD(, in6_multi_mship) ia6_memberships;
144 /* entry in bucket of inet6 addresses */
145 CK_LIST_ENTRY(in6_ifaddr) ia6_hash;
146 };
147
148 /* List of in6_ifaddr's. */
149 CK_STAILQ_HEAD(in6_ifaddrhead, in6_ifaddr);
150 CK_LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr);
151 #endif /* _KERNEL */
152
153 /* control structure to manage address selection policy */
154 struct in6_addrpolicy {
155 struct sockaddr_in6 addr; /* prefix address */
156 struct sockaddr_in6 addrmask; /* prefix mask */
157 int preced; /* precedence */
158 int label; /* matching label */
159 u_quad_t use; /* statistics */
160 };
161
162 /*
163 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
164 */
165 struct in6_ifstat {
166 uint64_t ifs6_in_receive; /* # of total input datagram */
167 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */
168 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */
169 uint64_t ifs6_in_noroute; /* # of datagrams with no route */
170 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */
171 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */
172 /* NOTE: increment on final dst if */
173 uint64_t ifs6_in_truncated; /* # of truncated datagrams */
174 uint64_t ifs6_in_discard; /* # of discarded datagrams */
175 /* NOTE: fragment timeout is not here */
176 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */
177 /* NOTE: increment on final dst if */
178 uint64_t ifs6_out_forward; /* # of datagrams forwarded */
179 /* NOTE: increment on outgoing if */
180 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */
181 /* NOTE: does not include forwrads */
182 uint64_t ifs6_out_discard; /* # of discarded datagrams */
183 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */
184 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */
185 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */
186 /* NOTE: this is # after fragment */
187 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */
188 /* NOTE: increment on final dst if */
189 uint64_t ifs6_reass_ok; /* # of reassembled packets */
190 /* NOTE: this is # after reass */
191 /* NOTE: increment on final dst if */
192 uint64_t ifs6_reass_fail; /* # of reass failures */
193 /* NOTE: may not be packet count */
194 /* NOTE: increment on final dst if */
195 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */
196 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */
197 };
198
199 /*
200 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
201 * XXX: I'm not sure if this file is the right place for this structure...
202 */
203 struct icmp6_ifstat {
204 /*
205 * Input statistics
206 */
207 /* ipv6IfIcmpInMsgs, total # of input messages */
208 uint64_t ifs6_in_msg;
209 /* ipv6IfIcmpInErrors, # of input error messages */
210 uint64_t ifs6_in_error;
211 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
212 uint64_t ifs6_in_dstunreach;
213 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
214 uint64_t ifs6_in_adminprohib;
215 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
216 uint64_t ifs6_in_timeexceed;
217 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
218 uint64_t ifs6_in_paramprob;
219 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
220 uint64_t ifs6_in_pkttoobig;
221 /* ipv6IfIcmpInEchos, # of input echo requests */
222 uint64_t ifs6_in_echo;
223 /* ipv6IfIcmpInEchoReplies, # of input echo replies */
224 uint64_t ifs6_in_echoreply;
225 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
226 uint64_t ifs6_in_routersolicit;
227 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
228 uint64_t ifs6_in_routeradvert;
229 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
230 uint64_t ifs6_in_neighborsolicit;
231 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
232 uint64_t ifs6_in_neighboradvert;
233 /* ipv6IfIcmpInRedirects, # of input redirects */
234 uint64_t ifs6_in_redirect;
235 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
236 uint64_t ifs6_in_mldquery;
237 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
238 uint64_t ifs6_in_mldreport;
239 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
240 uint64_t ifs6_in_mlddone;
241
242 /*
243 * Output statistics. We should solve unresolved routing problem...
244 */
245 /* ipv6IfIcmpOutMsgs, total # of output messages */
246 uint64_t ifs6_out_msg;
247 /* ipv6IfIcmpOutErrors, # of output error messages */
248 uint64_t ifs6_out_error;
249 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
250 uint64_t ifs6_out_dstunreach;
251 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
252 uint64_t ifs6_out_adminprohib;
253 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
254 uint64_t ifs6_out_timeexceed;
255 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
256 uint64_t ifs6_out_paramprob;
257 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
258 uint64_t ifs6_out_pkttoobig;
259 /* ipv6IfIcmpOutEchos, # of output echo requests */
260 uint64_t ifs6_out_echo;
261 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
262 uint64_t ifs6_out_echoreply;
263 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
264 uint64_t ifs6_out_routersolicit;
265 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
266 uint64_t ifs6_out_routeradvert;
267 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
268 uint64_t ifs6_out_neighborsolicit;
269 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
270 uint64_t ifs6_out_neighboradvert;
271 /* ipv6IfIcmpOutRedirects, # of output redirects */
272 uint64_t ifs6_out_redirect;
273 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
274 uint64_t ifs6_out_mldquery;
275 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
276 uint64_t ifs6_out_mldreport;
277 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
278 uint64_t ifs6_out_mlddone;
279 };
280
281 struct in6_ifreq {
282 char ifr_name[IFNAMSIZ];
283 union {
284 struct sockaddr_in6 ifru_addr;
285 struct sockaddr_in6 ifru_dstaddr;
286 int ifru_flags;
287 int ifru_flags6;
288 int ifru_metric;
289 caddr_t ifru_data;
290 struct in6_addrlifetime ifru_lifetime;
291 struct in6_ifstat ifru_stat;
292 struct icmp6_ifstat ifru_icmp6stat;
293 u_int32_t ifru_scope_id[16];
294 } ifr_ifru;
295 };
296
297 struct in6_aliasreq {
298 char ifra_name[IFNAMSIZ];
299 struct sockaddr_in6 ifra_addr;
300 struct sockaddr_in6 ifra_dstaddr;
301 struct sockaddr_in6 ifra_prefixmask;
302 int ifra_flags;
303 struct in6_addrlifetime ifra_lifetime;
304 int ifra_vhid;
305 };
306
307 /* pre-10.x compat */
308 struct oin6_aliasreq {
309 char ifra_name[IFNAMSIZ];
310 struct sockaddr_in6 ifra_addr;
311 struct sockaddr_in6 ifra_dstaddr;
312 struct sockaddr_in6 ifra_prefixmask;
313 int ifra_flags;
314 struct in6_addrlifetime ifra_lifetime;
315 };
316
317 /* prefix type macro */
318 #define IN6_PREFIX_ND 1
319 #define IN6_PREFIX_RR 2
320
321 /*
322 * prefix related flags passed between kernel(NDP related part) and
323 * user land command(ifconfig) and daemon(rtadvd).
324 */
325 struct in6_prflags {
326 struct prf_ra {
327 u_char onlink : 1;
328 u_char autonomous : 1;
329 u_char ra_derived: 1;
330 u_char reserved : 5;
331 } prf_ra;
332 u_char prf_reserved1;
333 u_short prf_reserved2;
334 /* want to put this on 4byte offset */
335 struct prf_rr {
336 u_char decrvalid : 1;
337 u_char decrprefd : 1;
338 u_char reserved : 6;
339 } prf_rr;
340 u_char prf_reserved3;
341 u_short prf_reserved4;
342 };
343
344 struct in6_prefixreq {
345 char ipr_name[IFNAMSIZ];
346 u_char ipr_origin;
347 u_char ipr_plen;
348 u_int32_t ipr_vltime;
349 u_int32_t ipr_pltime;
350 struct in6_prflags ipr_flags;
351 struct sockaddr_in6 ipr_prefix;
352 };
353
354 #define PR_ORIG_RA 0
355 #define PR_ORIG_RR 1
356 #define PR_ORIG_STATIC 2
357 #define PR_ORIG_KERNEL 3
358
359 #define ipr_raf_onlink ipr_flags.prf_ra.onlink
360 #define ipr_raf_auto ipr_flags.prf_ra.autonomous
361 #define ipr_raf_ra_derived ipr_flags.prf_ra.ra_derived
362
363 #define ipr_statef_onlink ipr_flags.prf_state.onlink
364
365 #define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid
366 #define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd
367
368 struct in6_rrenumreq {
369 char irr_name[IFNAMSIZ];
370 u_char irr_origin;
371 u_char irr_m_len; /* match len for matchprefix */
372 u_char irr_m_minlen; /* minlen for matching prefix */
373 u_char irr_m_maxlen; /* maxlen for matching prefix */
374 u_char irr_u_uselen; /* uselen for adding prefix */
375 u_char irr_u_keeplen; /* keeplen from matching prefix */
376 struct irr_raflagmask {
377 u_char onlink : 1;
378 u_char autonomous : 1;
379 u_char reserved : 6;
380 } irr_raflagmask;
381 u_int32_t irr_vltime;
382 u_int32_t irr_pltime;
383 struct in6_prflags irr_flags;
384 struct sockaddr_in6 irr_matchprefix;
385 struct sockaddr_in6 irr_useprefix;
386 };
387
388 #define irr_raf_mask_onlink irr_raflagmask.onlink
389 #define irr_raf_mask_auto irr_raflagmask.autonomous
390 #define irr_raf_mask_reserved irr_raflagmask.reserved
391
392 #define irr_raf_onlink irr_flags.prf_ra.onlink
393 #define irr_raf_auto irr_flags.prf_ra.autonomous
394
395 #define irr_statef_onlink irr_flags.prf_state.onlink
396
397 #define irr_rrf irr_flags.prf_rr
398 #define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid
399 #define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd
400
401 /*
402 * Given a pointer to an in6_ifaddr (ifaddr),
403 * return a pointer to the addr as a sockaddr_in6
404 */
405 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr))
406 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr))
407 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
408 #define IA6_SIN6(ia) (&((ia)->ia_addr))
409 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
410 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
411 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
412 #define IFA_MASKIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_netmask))->sin6_addr)
413
414 #define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
415
416 #ifdef _KERNEL
417 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
418 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
419 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
420 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
421 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
422 #define IN6_MASK_ADDR(a, m) do { \
423 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \
424 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \
425 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \
426 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \
427 } while (0)
428 #endif
429
430 #define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq)
431 #define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq)
432
433 #ifdef _KERNEL
434 /*
435 * SIOCSxxx ioctls should be unused (see comments in in6.c), but
436 * we do not shift numbers for binary compatibility.
437 */
438 #define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq)
439 #define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq)
440 #endif
441
442 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq)
443 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq)
444
445 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq)
446 #define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq)
447 #define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq)
448
449 #define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq)
450 #define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq)
451 #define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq)
452
453 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq)
454
455 #ifdef _KERNEL
456 #define OSIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ondireq)
457 #endif
458 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq)
459 #define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq)
460 #define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq)
461 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo)
462 #define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq)
463 #define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq)
464
465 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq)
466 #define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq)
467 #define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq)
468
469 #define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq)
470 #define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq)
471
472 #define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */
473
474 #define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq)
475 #define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq)
476 #define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq)
477
478 #define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */
479 #define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */
480 #define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */
481 #define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */
482 #define SIOCCIFPREFIX_IN6 _IOW('i', 104, \
483 struct in6_rrenumreq) /* change */
484 #define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \
485 struct in6_rrenumreq) /* set global */
486
487 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, \
488 struct sioc_sg_req6) /* get s,g pkt cnt */
489 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \
490 struct sioc_mif_req6) /* get pkt cnt per if */
491
492 #define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy)
493 #define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy)
494
495 #define IN6_IFF_ANYCAST 0x01 /* anycast address */
496 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */
497 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */
498 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */
499 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */
500 #define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address
501 * (obsolete)
502 */
503 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */
504 #define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */
505 #define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */
506
507 /* do not input/output */
508 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
509
510 #ifdef _KERNEL
511 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
512 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
513 #endif
514
515 #ifdef _KERNEL
516 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead);
517 VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl);
518 VNET_DECLARE(u_long, in6_ifaddrhmask);
519 #define V_in6_ifaddrhead VNET(in6_ifaddrhead)
520 #define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl)
521 #define V_in6_ifaddrhmask VNET(in6_ifaddrhmask)
522
523 #define IN6ADDR_NHASH_LOG2 8
524 #define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2)
525 #define IN6ADDR_HASHVAL(x) (in6_addrhash(x))
526 #define IN6ADDR_HASH(x) \
527 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask])
528
529 static __inline uint32_t
530 in6_addrhash(const struct in6_addr *in6)
531 {
532 uint32_t x;
533
534 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^
535 in6->s6_addr32[3];
536 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT));
537 }
538
539 extern struct rmlock in6_ifaddr_lock;
540 #define IN6_IFADDR_LOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_LOCKED)
541 #define IN6_IFADDR_RLOCK(t) rm_rlock(&in6_ifaddr_lock, (t))
542 #define IN6_IFADDR_RLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_RLOCKED)
543 #define IN6_IFADDR_RUNLOCK(t) rm_runlock(&in6_ifaddr_lock, (t))
544 #define IN6_IFADDR_WLOCK() rm_wlock(&in6_ifaddr_lock)
545 #define IN6_IFADDR_WLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_WLOCKED)
546 #define IN6_IFADDR_WUNLOCK() rm_wunlock(&in6_ifaddr_lock)
547
548 #define in6_ifstat_inc(ifp, tag) \
549 do { \
550 if (ifp) \
551 counter_u64_add(((struct in6_ifextra *) \
552 ((ifp)->if_afdata[AF_INET6]))->in6_ifstat[ \
553 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\
554 } while (/*CONSTCOND*/ 0)
555
556 VNET_DECLARE(unsigned long, in6_maxmtu);
557 #define V_in6_maxmtu VNET(in6_maxmtu)
558 #endif /* _KERNEL */
559
560 /*
561 * IPv6 multicast MLD-layer source entry.
562 */
563 struct ip6_msource {
564 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */
565 struct in6_addr im6s_addr;
566 struct im6s_st {
567 uint16_t ex; /* # of exclusive members */
568 uint16_t in; /* # of inclusive members */
569 } im6s_st[2]; /* state at t0, t1 */
570 uint8_t im6s_stp; /* pending query */
571 };
572 RB_HEAD(ip6_msource_tree, ip6_msource);
573
574 /*
575 * IPv6 multicast PCB-layer source entry.
576 *
577 * NOTE: overlapping use of struct ip6_msource fields at start.
578 */
579 struct in6_msource {
580 RB_ENTRY(ip6_msource) im6s_link; /* Common field */
581 struct in6_addr im6s_addr; /* Common field */
582 uint8_t im6sl_st[2]; /* state before/at commit */
583 };
584
585 #ifdef _KERNEL
586 /*
587 * IPv6 source tree comparison function.
588 *
589 * An ordered predicate is necessary; bcmp() is not documented to return
590 * an indication of order, memcmp() is, and is an ISO C99 requirement.
591 */
592 static __inline int
593 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b)
594 {
595
596 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr)));
597 }
598 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp);
599
600 /*
601 * IPv6 multicast PCB-layer group filter descriptor.
602 */
603 struct in6_mfilter {
604 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */
605 u_long im6f_nsrc; /* # of source entries */
606 uint8_t im6f_st[2]; /* state before/at commit */
607 struct in6_multi *im6f_in6m; /* associated multicast address */
608 STAILQ_ENTRY(in6_mfilter) im6f_entry; /* list entry */
609 };
610
611 /*
612 * Helper types and functions for IPv4 multicast filters.
613 */
614 STAILQ_HEAD(ip6_mfilter_head, in6_mfilter);
615
616 struct in6_mfilter *ip6_mfilter_alloc(int mflags, int st0, int st1);
617 void ip6_mfilter_free(struct in6_mfilter *);
618
619 static inline void
620 ip6_mfilter_init(struct ip6_mfilter_head *head)
621 {
622
623 STAILQ_INIT(head);
624 }
625
626 static inline struct in6_mfilter *
627 ip6_mfilter_first(const struct ip6_mfilter_head *head)
628 {
629
630 return (STAILQ_FIRST(head));
631 }
632
633 static inline void
634 ip6_mfilter_insert(struct ip6_mfilter_head *head, struct in6_mfilter *imf)
635 {
636
637 STAILQ_INSERT_TAIL(head, imf, im6f_entry);
638 }
639
640 static inline void
641 ip6_mfilter_remove(struct ip6_mfilter_head *head, struct in6_mfilter *imf)
642 {
643
644 STAILQ_REMOVE(head, imf, in6_mfilter, im6f_entry);
645 }
646
647 #define IP6_MFILTER_FOREACH(imf, head) \
648 STAILQ_FOREACH(imf, head, im6f_entry)
649
650 static inline size_t
651 ip6_mfilter_count(struct ip6_mfilter_head *head)
652 {
653 struct in6_mfilter *imf;
654 size_t num = 0;
655
656 STAILQ_FOREACH(imf, head, im6f_entry)
657 num++;
658 return (num);
659 }
660
661 /*
662 * Legacy KAME IPv6 multicast membership descriptor.
663 */
664 struct in6_multi_mship {
665 struct in6_multi *i6mm_maddr;
666 LIST_ENTRY(in6_multi_mship) i6mm_chain;
667 };
668
669 /*
670 * IPv6 group descriptor.
671 *
672 * For every entry on an ifnet's if_multiaddrs list which represents
673 * an IP multicast group, there is one of these structures.
674 *
675 * If any source filters are present, then a node will exist in the RB-tree
676 * to permit fast lookup by source whenever an operation takes place.
677 * This permits pre-order traversal when we issue reports.
678 * Source filter trees are kept separately from the socket layer to
679 * greatly simplify locking.
680 *
681 * When MLDv2 is active, in6m_timer is the response to group query timer.
682 * The state-change timer in6m_sctimer is separate; whenever state changes
683 * for the group the state change record is generated and transmitted,
684 * and kept if retransmissions are necessary.
685 *
686 * FUTURE: in6m_link is now only used when groups are being purged
687 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but
688 * because it is at the very start of the struct, we can't do this
689 * w/o breaking the ABI for ifmcstat.
690 */
691 struct in6_multi {
692 struct in6_addr in6m_addr; /* IPv6 multicast address */
693 struct ifnet *in6m_ifp; /* back pointer to ifnet */
694 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
695 u_int in6m_refcount; /* reference count */
696 u_int in6m_state; /* state of the membership */
697 u_int in6m_timer; /* MLD6 listener report timer */
698
699 /* New fields for MLDv2 follow. */
700 struct mld_ifsoftc *in6m_mli; /* MLD info */
701 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */
702 SLIST_ENTRY(in6_multi) in6m_defer; /* deferred MLDv1 */
703 struct ip6_msource_tree in6m_srcs; /* tree of sources */
704 u_long in6m_nsrc; /* # of tree entries */
705
706 struct mbufq in6m_scq; /* queue of pending
707 * state-change packets */
708 struct timeval in6m_lastgsrtv; /* last G-S-R query */
709 uint16_t in6m_sctimer; /* state-change timer */
710 uint16_t in6m_scrv; /* state-change rexmit count */
711
712 /*
713 * SSM state counters which track state at T0 (the time the last
714 * state-change report's RV timer went to zero) and T1
715 * (time of pending report, i.e. now).
716 * Used for computing MLDv2 state-change reports. Several refcounts
717 * are maintained here to optimize for common use-cases.
718 */
719 struct in6m_st {
720 uint16_t iss_fmode; /* MLD filter mode */
721 uint16_t iss_asm; /* # of ASM listeners */
722 uint16_t iss_ex; /* # of exclusive members */
723 uint16_t iss_in; /* # of inclusive members */
724 uint16_t iss_rec; /* # of recorded sources */
725 } in6m_st[2]; /* state at t0, t1 */
726 };
727
728 void in6m_disconnect_locked(struct in6_multi_head *inmh, struct in6_multi *inm);
729
730 /*
731 * Helper function to derive the filter mode on a source entry
732 * from its internal counters. Predicates are:
733 * A source is only excluded if all listeners exclude it.
734 * A source is only included if no listeners exclude it,
735 * and at least one listener includes it.
736 * May be used by ifmcstat(8).
737 */
738 static __inline uint8_t
739 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims,
740 uint8_t t)
741 {
742
743 t = !!t;
744 if (inm->in6m_st[t].iss_ex > 0 &&
745 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex)
746 return (MCAST_EXCLUDE);
747 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0)
748 return (MCAST_INCLUDE);
749 return (MCAST_UNDEFINED);
750 }
751
752 /*
753 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes
754 * before link layer multicast locks in the lock order. In most cases,
755 * consumers of IN_*_MULTI() macros should acquire the locks before
756 * calling them; users of the in_{add,del}multi() functions should not.
757 */
758 extern struct mtx in6_multi_list_mtx;
759 extern struct sx in6_multi_sx;
760
761 #define IN6_MULTI_LIST_LOCK() mtx_lock(&in6_multi_list_mtx)
762 #define IN6_MULTI_LIST_UNLOCK() mtx_unlock(&in6_multi_list_mtx)
763 #define IN6_MULTI_LIST_LOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_OWNED)
764 #define IN6_MULTI_LIST_UNLOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_NOTOWNED)
765
766 #define IN6_MULTI_LOCK() sx_xlock(&in6_multi_sx)
767 #define IN6_MULTI_UNLOCK() sx_xunlock(&in6_multi_sx)
768 #define IN6_MULTI_LOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XLOCKED)
769 #define IN6_MULTI_UNLOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XUNLOCKED)
770
771 /*
772 * Get the in6_multi pointer from a ifmultiaddr.
773 * Returns NULL if ifmultiaddr is no longer valid.
774 */
775 static __inline struct in6_multi *
776 in6m_ifmultiaddr_get_inm(struct ifmultiaddr *ifma)
777 {
778
779 NET_EPOCH_ASSERT();
780
781 return ((ifma->ifma_addr->sa_family != AF_INET6 ||
782 (ifma->ifma_flags & IFMA_F_ENQUEUED) == 0) ? NULL :
783 ifma->ifma_protospec);
784 }
785
786 /*
787 * Look up an in6_multi record for an IPv6 multicast address
788 * on the interface ifp.
789 * If no record found, return NULL.
790 *
791 * SMPng: The IN6_MULTI_LOCK and must be held and must be in network epoch.
792 */
793 static __inline struct in6_multi *
794 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr)
795 {
796 struct ifmultiaddr *ifma;
797 struct in6_multi *inm;
798
799 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
800 inm = in6m_ifmultiaddr_get_inm(ifma);
801 if (inm == NULL)
802 continue;
803 if (IN6_ARE_ADDR_EQUAL(&inm->in6m_addr, mcaddr))
804 return (inm);
805 }
806 return (NULL);
807 }
808
809 /*
810 * Wrapper for in6m_lookup_locked().
811 *
812 * SMPng: Assumes network epoch entered and that IN6_MULTI_LOCK() isn't held.
813 */
814 static __inline struct in6_multi *
815 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr)
816 {
817 struct in6_multi *inm;
818
819 NET_EPOCH_ASSERT();
820
821 IN6_MULTI_LIST_LOCK();
822 inm = in6m_lookup_locked(ifp, mcaddr);
823 IN6_MULTI_LIST_UNLOCK();
824
825 return (inm);
826 }
827
828 /* Acquire an in6_multi record. */
829 static __inline void
830 in6m_acquire_locked(struct in6_multi *inm)
831 {
832
833 IN6_MULTI_LIST_LOCK_ASSERT();
834 ++inm->in6m_refcount;
835 }
836
837 static __inline void
838 in6m_acquire(struct in6_multi *inm)
839 {
840 IN6_MULTI_LIST_LOCK();
841 in6m_acquire_locked(inm);
842 IN6_MULTI_LIST_UNLOCK();
843 }
844
845 static __inline void
846 in6m_rele_locked(struct in6_multi_head *inmh, struct in6_multi *inm)
847 {
848 KASSERT(inm->in6m_refcount > 0, ("refcount == %d inm: %p", inm->in6m_refcount, inm));
849 IN6_MULTI_LIST_LOCK_ASSERT();
850
851 if (--inm->in6m_refcount == 0) {
852 MPASS(inm->in6m_ifp == NULL);
853 inm->in6m_ifma->ifma_protospec = NULL;
854 MPASS(inm->in6m_ifma->ifma_llifma == NULL);
855 SLIST_INSERT_HEAD(inmh, inm, in6m_nrele);
856 }
857 }
858
859 struct ip6_moptions;
860 struct sockopt;
861 struct inpcbinfo;
862 struct rib_head;
863
864 /* Multicast KPIs. */
865 int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *,
866 const struct sockaddr *, const struct sockaddr *);
867 int in6_joingroup(struct ifnet *, const struct in6_addr *,
868 struct in6_mfilter *, struct in6_multi **, int);
869 int in6_leavegroup(struct in6_multi *, struct in6_mfilter *);
870 int in6_leavegroup_locked(struct in6_multi *, struct in6_mfilter *);
871 void in6m_clear_recorded(struct in6_multi *);
872 void in6m_commit(struct in6_multi *);
873 void in6m_print(const struct in6_multi *);
874 int in6m_record_source(struct in6_multi *, const struct in6_addr *);
875 void in6m_release_list_deferred(struct in6_multi_head *);
876 void in6m_release_wait(void *);
877 void ip6_freemoptions(struct ip6_moptions *);
878 int ip6_getmoptions(struct inpcb *, struct sockopt *);
879 int ip6_setmoptions(struct inpcb *, struct sockopt *);
880
881 /* flags to in6_update_ifa */
882 #define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */
883
884 int in6_mask2len(struct in6_addr *, u_char *);
885 int in6_control(struct socket *, u_long, void *, struct ifnet *,
886 struct thread *);
887 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
888 struct in6_ifaddr *, int);
889 void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *,
890 const struct in6_addr *);
891 int in6_addifaddr(struct ifnet *, struct in6_aliasreq *, struct in6_ifaddr *);
892 void in6_purgeaddr(struct ifaddr *);
893 void in6_purgeifaddr(struct in6_ifaddr *);
894 int in6if_do_dad(struct ifnet *);
895 void in6_savemkludge(struct in6_ifaddr *);
896 void *in6_domifattach(struct ifnet *);
897 void in6_domifdetach(struct ifnet *, void *);
898 int in6_domifmtu(struct ifnet *);
899 struct rib_head *in6_inithead(uint32_t fibnum);
900 void in6_detachhead(struct rib_head *rh);
901 void in6_setmaxmtu(void);
902 int in6_if2idlen(struct ifnet *);
903 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int);
904 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, const struct in6_addr *);
905 struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t, bool);
906 struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *);
907 int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *);
908 int in6_matchlen(struct in6_addr *, struct in6_addr *);
909 int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int);
910 void in6_prefixlen2mask(struct in6_addr *, int);
911 int in6_prefix_ioctl(struct socket *, u_long, caddr_t,
912 struct ifnet *);
913 int in6_prefix_add_ifid(int, struct in6_ifaddr *);
914 void in6_prefix_remove_ifid(int, struct in6_ifaddr *);
915 void in6_purgeprefix(struct ifnet *);
916
917 int in6_is_addr_deprecated(struct sockaddr_in6 *);
918 int in6_src_ioctl(u_long, caddr_t);
919
920 void in6_newaddrmsg(struct in6_ifaddr *, int);
921
922 void in6_purge_proxy_ndp(struct ifnet *);
923 /*
924 * Extended API for IPv6 FIB support.
925 */
926 struct mbuf *ip6_tryforward(struct mbuf *);
927 #endif /* _KERNEL */
928
929 #endif /* _NETINET6_IN6_VAR_H_ */
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